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src.rivoreo.one / grub4dos-solaris / 9230b22902509e596bab39733cd1882d0a6a2d6b / . / stage2 / builtins.c
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/* builtins.c - the GRUB builtin commands */
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 1999,2000,2001,2002,2003,2004 Free Software Foundation, Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/* Include stdio.h before shared.h, because we can't define
WITHOUT_LIBC_STUBS here. */
#ifdef GRUB_UTIL
# include <stdio.h>
#endif
#include <shared.h>
#include <filesys.h>
#include <term.h>
#ifdef SUPPORT_NETBOOT
# define GRUB 1
# include <etherboot.h>
#endif
#ifdef SUPPORT_SERIAL
# include <serial.h>
# include <terminfo.h>
#endif
#ifdef GRUB_UTIL
# include <device.h>
#else /* ! GRUB_UTIL */
# include <apic.h>
# include <smp-imps.h>
#endif /* ! GRUB_UTIL */
#ifdef USE_MD5_PASSWORDS
# include <md5.h>
#endif
#include "freebsd.h"
/* The type of kernel loaded. */
kernel_t kernel_type;
/* The boot device. */
static int bootdev;
/* True when the debug mode is turned on, and false
when it is turned off. */
int debug = 0;
/* The default entry. */
int default_entry = 0;
/* The fallback entry. */
int fallback_entryno;
int fallback_entries[MAX_FALLBACK_ENTRIES];
/* The number of current entry. */
int current_entryno;
/* The address for Multiboot command-line buffer. */
static char *mb_cmdline;
static char kernel_option_video[64];
/* The password. */
char *password;
/* The password type. */
password_t password_type;
/* The flag for indicating that the user is authoritative. */
int auth = 0;
/* The timeout. */
int grub_timeout = -1;
/* Whether to show the menu or not. */
int show_menu = 1;
int use_config_file = 1;
extern unsigned long i;
extern char *mbr;
#ifndef GRUB_UTIL
/* Whether the drive map hook is on. */
//static int int13_on_hook = 0;
//static int floppy_not_inserted[4] = {0, 0, 0, 0};
/* The BIOS drive map. */
struct drive_map_slot bios_drive_map[DRIVE_MAP_SIZE + 1];
extern struct drive_map_slot hooked_drive_map[DRIVE_MAP_SIZE + 1];
/* backup of original BIOS floppy-count byte in 0x410 */
extern char floppies_orig;
/* backup of original BIOS harddrive-count byte in 0x475 */
extern char harddrives_orig;
extern unsigned short chain_load_segment;//0x0000;
extern unsigned short chain_load_offset;//0x7c00;
extern unsigned int chain_load_length;//0x200;
extern unsigned short chain_boot_CS;//0x0000;
extern unsigned short chain_boot_IP;//0x7c00;
extern unsigned long chain_ebx;
extern unsigned long chain_ebx_set;
extern unsigned long chain_edx;
extern unsigned long chain_edx_set;
extern unsigned long chain_enable_gateA20;
extern char HMA_start[];
#endif /* ! GRUB_UTIL */
static int chainloader_load_segment = 0;
static int chainloader_load_offset = 0;
static int chainloader_load_length = 0;
static int chainloader_skip_length = 0;
static int chainloader_boot_CS = 0;
static int chainloader_boot_IP = 0;
static long chainloader_ebx = 0;
static int chainloader_ebx_set = 0;
static long chainloader_edx = 0;
static int chainloader_edx_set = 0;
static int is_sdi = 0;
static int chainloader_disable_A20 = 0;
static char chainloader_file[256];
static const char *warning_defaultfile = "# WARNING: If you want to edit this file directly, do not remove any line";
#ifndef GRUB_UTIL
static int
drive_map_slot_empty (struct drive_map_slot item)
{
unsigned long *array = (unsigned long *)&item;
unsigned long n = sizeof (struct drive_map_slot) / sizeof (unsigned long);
while (n)
{
if (*array)
return 0;
array++;
n--;
}
return 1;
//if (*(unsigned long *)(&(item.from_drive))) return 0;
//if (item.start_sector) return 0;
//if (item.sector_count) return 0;
//return 1;
}
static int
drive_map_slot_equal (struct drive_map_slot a, struct drive_map_slot b)
{
//return ! grub_memcmp ((void *)&(a.from_drive), (void *)&(b.from_drive), sizeof(struct drive_map_slot));
return ! grub_memcmp ((void *)&a, (void *)&b, sizeof(struct drive_map_slot));
//if (*(unsigned long *)(&(a.from_drive)) != *(unsigned long *)(&(b.from_drive))) return 0;
//if (a.start_sector != b.start_sector) return 0;
//if (a.sector_count != b.sector_count) return 0;
//return 1;
}
#endif /* ! GRUB_UTIL */
/* Prototypes for allowing straightfoward calling of builtins functions
inside other functions. */
static int configfile_func (char *arg, int flags);
//static char *set_device (char *device);
//static int real_open_partition (int flags);
//static int open_partition (void);
int commandline_func (char *arg, int flags);
/* Initialize the data for builtins. */
void
init_builtins (void)
{
kernel_type = KERNEL_TYPE_NONE;
/* BSD and chainloading evil hacks! */
bootdev = set_bootdev (0);
mb_cmdline = (char *) MB_CMDLINE_BUF;
*kernel_option_video = 0; /* initialize the string to be empty. */
}
/* Initialize the data for the configuration file. */
void
init_config (void)
{
default_entry = 0;
password = 0;
fallback_entryno = -1;
fallback_entries[0] = -1;
grub_timeout = -1;
}
/* Check a password for correctness. Returns 0 if password was
correct, and a value != 0 for error, similarly to strcmp. */
int
check_password (char *entered, char* expected, password_t type)
{
switch (type)
{
case PASSWORD_PLAIN:
return strcmp (entered, expected);
#ifdef USE_MD5_PASSWORDS
case PASSWORD_MD5:
return check_md5_password (entered, expected);
#endif
default:
/* unsupported password type: be secure */
return 1;
}
}
/* Print which sector is read when loading a file. */
static void
disk_read_print_func (unsigned long sector, unsigned long offset, unsigned long length)
{
grub_printf ("[%d,%d,%d]", sector, offset, length);
}
extern int rawread_ignore_memmove_overflow; /* defined in disk_io.c */
static long query_block_entries = 0;
static unsigned long map_start_sector = 0;
static unsigned long map_num_sectors = 0;
static unsigned long blklst_start_sector;
static unsigned long blklst_num_sectors;
static unsigned long blklst_num_entries;
static unsigned long blklst_last_length;
static void disk_read_blocklist_func (unsigned long sector, unsigned long offset, unsigned long length);
/* Collect contiguous blocks into one entry as many as possible,
and print the blocklist notation on the screen. */
static void
disk_read_blocklist_func (unsigned long sector, unsigned long offset, unsigned long length)
{
if (blklst_num_sectors > 0)
{
if (blklst_start_sector + blklst_num_sectors == sector
&& offset == 0 && blklst_last_length == buf_geom.sector_size/*SECTOR_SIZE*/)
{
blklst_num_sectors++;
blklst_last_length = length;
return;
}
else
{
if (query_block_entries >= 0)
{
if (blklst_last_length == buf_geom.sector_size/*SECTOR_SIZE*/)
grub_printf ("%s%d+%d", blklst_num_entries ? "," : "",
blklst_start_sector - part_start, blklst_num_sectors);
else if (blklst_num_sectors > 1)
grub_printf ("%s%d+%d,%d[0-%d]", blklst_num_entries ? "," : "",
blklst_start_sector - part_start, blklst_num_sectors-1,
blklst_start_sector + blklst_num_sectors-1 - part_start,
blklst_last_length);
else
grub_printf ("%s%d[0-%d]", blklst_num_entries ? "," : "",
blklst_start_sector - part_start, blklst_last_length);
}
blklst_num_entries++;
blklst_num_sectors = 0;
}
}
if (offset > 0)
{
if (query_block_entries >= 0)
grub_printf("%s%d[%d-%d]", blklst_num_entries ? "," : "",
sector - part_start, offset, offset + length);
blklst_num_entries++;
}
else
{
blklst_start_sector = sector;
blklst_num_sectors = 1;
blklst_last_length = length;
}
}
/* blocklist */
static int
blocklist_func (char *arg, int flags)
{
char *dummy = (char *) RAW_ADDR (0x300000);
int err;
blklst_start_sector = 0;
blklst_num_sectors = 0;
blklst_num_entries = 0;
blklst_last_length = 0;
map_start_sector = 0;
map_num_sectors = 0;
//grub_printf ("before open()\n");
/* Open the file. */
if (! grub_open (arg))
goto fail_open;
//grub_printf ("after open()\n");
//grub_printf ("geometry->sector_size=%d\n", buf_geom.sector_size);
/* Print the device name. */
if (query_block_entries >= 0)
grub_printf ("(%cd%d",
(current_drive & 0x80) ? 'h' : 'f',
current_drive & ~0x80);
if ((current_partition & 0xFF0000) != 0xFF0000)
if (query_block_entries >= 0)
grub_printf (",%d", (current_partition >> 16) & 0xFF);
if ((current_partition & 0x00FF00) != 0x00FF00)
if (query_block_entries >= 0)
grub_printf (",%c", 'a' + ((current_partition >> 8) & 0xFF));
if (query_block_entries >= 0)
grub_printf (")");
//grub_printf ("before read()\n");
rawread_ignore_memmove_overflow = 1;
/* Read in the whole file to DUMMY. */
disk_read_hook = disk_read_blocklist_func;
err = grub_read (dummy, query_block_entries < 0 ? buf_geom.sector_size/*SECTOR_SIZE*/ : -1);
disk_read_hook = 0;
rawread_ignore_memmove_overflow = 0;
if (! err)
goto fail_read;
//grub_printf ("after read()\n");
/* The last entry may not be printed yet. Don't check if it is a
* full sector, since it doesn't matter if we read too much. */
if (blklst_num_sectors > 0)
{
if (query_block_entries >= 0)
grub_printf ("%s%d+%d", blklst_num_entries ? "," : "",
blklst_start_sector - part_start, blklst_num_sectors);
blklst_num_entries++;
}
if (query_block_entries >= 0)
grub_putchar ('\n');
#if 0
if (num_entries > 1)
query_block_entries = num_entries;
else
{
query_block_entries = 1;
map_start_sector = start_sector;
map_num_sectors = num_sectors;
}
#endif
if (query_block_entries < 0)
{
//grub_printf ("blklist1: start_sector=%d, num_sectors=%d, num_entries=%d, last_length=%d, filepos=%d, filemax=%d\n",start_sector, num_sectors, num_entries, last_length, filepos, filemax);
map_start_sector = blklst_start_sector;
blklst_start_sector = 0;
blklst_num_sectors = 0;
blklst_num_entries = 0;
blklst_last_length = 0;
rawread_ignore_memmove_overflow = 1;
/* read in the last sector to DUMMY */
filepos = filemax ? (filemax - 1) & (-buf_geom.sector_size/*SECTOR_SIZE*/) : filemax;
disk_read_hook = disk_read_blocklist_func;
err = grub_read (dummy, -1);
disk_read_hook = 0;
rawread_ignore_memmove_overflow = 0;
//grub_printf ("blklist2: start_sector=%d, num_sectors=%d, num_entries=%d, last_length=%d, filepos=%d, filemax=%d, map_num_sectors=%d, query_block_entries=%d\n",start_sector, num_sectors, num_entries, last_length, filepos, filemax, map_num_sectors, query_block_entries);
if (! err)
goto fail_read;
map_num_sectors = blklst_start_sector - map_start_sector + 1;
query_block_entries = filemax ?
map_num_sectors - ((filemax - 1) / buf_geom.sector_size/*>> SECTOR_BITS*/) : 2;
}
fail_read:
grub_close ();
fail_open:
if (query_block_entries < 0)
query_block_entries = 0;
return errnum;
}
static struct builtin builtin_blocklist =
{
"blocklist",
blocklist_func,
BUILTIN_MENU | BUILTIN_CMDLINE | BUILTIN_HELP_LIST,
"blocklist FILE",
"Print the blocklist notation of the file FILE."
};
#if ! defined(GRUB_UTIL) && ! defined (STAGE1_5)
/* WinME support by bean. Thanks! */
// The following routines are used to decompress IO.SYS from WinME
static int ibuf_pos;
static char *ibuf_ptr,*obuf_ptr;
static unsigned short ibuf_tab[16];
static void ibuf_init(char* buf);
static unsigned short ibuf_read(int nbits);
static int expand_block(int nsec);
static long expand_file(char* src,char* dst);
static void ibuf_init(char* buf)
{
//int i;
ibuf_ptr=buf;
ibuf_pos=0;
// ibuf_tab[i]=(1<<(i+1))-1
ibuf_tab[0]=1;
for (i=1;i<16;i++)
ibuf_tab[i]=ibuf_tab[i-1]*2+1;
}
static unsigned short ibuf_read(int nbits)
{
unsigned short res;
res=(unsigned short)((*((unsigned long*)ibuf_ptr)>>ibuf_pos) & ibuf_tab[nbits-1]);
ibuf_pos+=nbits;
if (ibuf_pos>=8)
{
ibuf_ptr+=(ibuf_pos>>3);
ibuf_pos&=7;
}
return res;
}
#define obuf_init(buf) obuf_ptr=buf
#define obuf_putc(ch) *(obuf_ptr++)=ch
#define obuf_copy(ofs,len) do { for (;len>0;obuf_ptr++,len--) *(obuf_ptr)=*(obuf_ptr-ofs); } while (0)
// Don't use memcpy, otherwise we could be screwed !
static int expand_block(int nsec)
{
while (nsec>0)
{
int cnt;
cnt=0x200;
while (1)
{
int flg,ofs,bts,bse,del,len;
flg=ibuf_read(2);
if (flg==0) ofs=ibuf_read(6); else
if (flg==3)
{
if (ibuf_read(1))
{
ofs=ibuf_read(12)+0x140;
if (ofs==0x113F)
break;
}
else
ofs=ibuf_read(8)+0x40;
} else
{
char ch;
cnt--;
if (cnt<0)
{
grub_putstr("Data corrupted");
return 1;
}
ch=ibuf_read(7);
if (flg & 1)
ch|=0x80;
obuf_putc(ch);
continue;
}
if (ofs==0)
{
grub_putstr("Data corrupted");
return 1;
}
bse=2;
del=0;
for (bts=0;bts<9;bts++)
{
if (ibuf_read(1))
break;
bse+=del+1;
del=del*2+1;
}
if (bts==9)
{
grub_putstr("Data corrupted");
return 1;
}
len=(bts)?bse+ibuf_read(bts):bse;
if ((cnt=cnt-len)<0)
{
grub_putstr("Data corrupted");
return 1;
}
obuf_copy(ofs,len);
}
nsec--;
if ((cnt) && (nsec))
{
grub_putstr("Data corrupted");
return 1;
}
}
return 0;
}
static long expand_file(char* src,char* dst)
{
ibuf_init(src);
obuf_init(dst);
if (ibuf_read(16)!=0x4D43)
{
grub_putstr("First CM signature not found");
return -1;
}
while (1)
{
unsigned short flg,len;
flg=ibuf_read(8);
len=ibuf_read(16);
if (len==0)
{
int n;
n=(ibuf_ptr-src) & 0xF;
if ((n) || (ibuf_pos))
{
ibuf_ptr+=16-n;
ibuf_pos=0;
}
if (ibuf_read(16)!=0x4D43)
{
grub_putstr("Second CM signature not found");
return -1;
}
return obuf_ptr-dst;
}
if (flg==0)
{
memcpy(obuf_ptr,ibuf_ptr,len);
ibuf_ptr+=len;
obuf_ptr+=len;
}
else
{
char* save_ptr;
unsigned short sec;
sec=(ibuf_read(16)+511)>>9;
save_ptr=ibuf_ptr;
if (ibuf_read(16)!=0x5344)
{
grub_putstr("0x5344 signature not found");
return -1;
}
ibuf_read(16);
if (expand_block(sec))
return -1;
ibuf_ptr=save_ptr+len;
ibuf_pos=0;
}
}
}
#endif /* ! defined(GRUB_UTIL) && ! defined (STAGE1_5) */
#ifndef GRUB_UTIL
/* boot */
static int
boot_func (char *arg, int flags)
{
int old_cursor;
struct term_entry *prev_term = current_term;
pxe_unload();
/* Clear the int15 handler if we can boot the kernel successfully.
This assumes that the boot code never fails only if KERNEL_TYPE is
not KERNEL_TYPE_NONE. Is this assumption is bad? */
if (kernel_type != KERNEL_TYPE_NONE)
unset_int15_handler ();
/* if our terminal needed initialization, we should shut it down
* before booting the kernel, but we want to save what it was so
* we can come back if needed */
if (current_term->shutdown)
{
(*current_term->shutdown)();
current_term = term_table; /* assumption: console is first */
}
#ifdef SUPPORT_NETBOOT
/* Shut down the networking. */
cleanup_net ();
#endif
old_cursor = setcursor (1);
errnum = 0;
errorcheck = 1;
/* clear keyboard buffer before boot */
while (console_checkkey () != -1) console_getkey ();
switch (kernel_type)
{
case KERNEL_TYPE_FREEBSD:
case KERNEL_TYPE_NETBSD:
/* *BSD */
bsd_boot (kernel_type, bootdev, (char *) mbi.cmdline);
break;
case KERNEL_TYPE_LINUX:
/* Linux */
linux_boot ();
break;
case KERNEL_TYPE_BIG_LINUX:
/* Big Linux */
big_linux_boot ();
break;
case KERNEL_TYPE_CDROM:
/* Bootable CD-ROM */
/* Initiate Disk Emulation and Boot */
/* int 13h / AX=4C00h
*
* input: DS:SI -> specification packet
*
* output: AX = return codes
* CF = 1 if system failed to boot
* CF = 0 will not ocurr because when this function succeeds no return is generated.
*/
/* specification packet is in chainloader_file[] */
if (chainloader_file[0] == 0x13)
biosdisk_int13_extensions (0x4C00, current_drive, chainloader_file);
else
printf ("\nUnknown Error booting CD.\n");
errnum = ERR_BOOT_FAILURE;
break;
case KERNEL_TYPE_CHAINLOADER:
/* Chainloader */
#if 0
/* Check if we should set the int13 handler. */
if (! int13_on_hook && ! drive_map_slot_empty (bios_drive_map[0]))
{
int i;
/* Search for SAVED_DRIVE. */
for (i = 0; i < DRIVE_MAP_SIZE; i++)
{
if (drive_map_slot_empty (bios_drive_map[i]))
break;
/* it is wrong seting DL by examination of the drive map */
/* should use rootnoverify just before the boot to set DL */
if ((bios_drive_map[i].from_drive) == saved_drive)
{
/* Exchage SAVED_DRIVE with the mapped drive, only if the whole drive is mapped. */
if (! bios_drive_map[i].start_sector && ! (bios_drive_map[i].sector_count >> 1))
saved_drive = bios_drive_map[i].to_drive;
break;
}
}
/* Set the handler. This is somewhat dangerous. */
set_int13_handler (bios_drive_map);
int13_on_hook = 1;
buf_drive = -1;
buf_track = -1;
}
#endif
/* set boot drive to the root device.
* the boot drive should be either (fd0) or (hd0) for normal
* MS-style boot sectors. the BIOS only passes (fd0) or (hd0)
* to DL, because these two are the only devices that can be
* boot by BIOS
*
* should set boot drive using the rootnoverify command just
* before the boot command
*/
boot_drive = saved_drive;
#ifndef GRUB_UTIL
/* extended chainloader */
if (chainloader_load_length > 512 || chainloader_boot_CS > 0 ||
chainloader_skip_length ||
chainloader_ebx_set ||
chainloader_edx_set ||
is_sdi || //chainloader_disable_A20 ||
(chainloader_boot_IP >= 0 && chainloader_boot_IP != 0x7c00) ||
(((chainloader_load_segment >= 0)? chainloader_load_segment : 0) << 4) +
((chainloader_load_offset >= 0)? chainloader_load_offset : 0x7c00) != 0x7c00
)
{
unsigned long read_length;
/* load high */
if (chainloader_load_segment == -1)
chainloader_load_segment = 0;
if (chainloader_load_offset == -1)
{
if (chainloader_load_segment)
chainloader_load_offset = 0;
else
chainloader_load_offset = 0x7c00;
}
if (chainloader_boot_CS == -1)
chainloader_boot_CS = chainloader_load_segment;
if (chainloader_boot_IP == -1)
chainloader_boot_IP = chainloader_load_offset;
/* Open the file. */
if (! grub_open (chainloader_file))
{
kernel_type = KERNEL_TYPE_NONE;
return 1;
}
if (is_sdi)
{
unsigned long long bytes_needed;
unsigned long long base;
bytes_needed = filemax;
base = 0;
if (mbi.flags & MB_INFO_MEM_MAP)
{
struct AddrRangeDesc *map = (struct AddrRangeDesc *) mbi.mmap_addr;
unsigned long end_addr = mbi.mmap_addr + mbi.mmap_length;
for (; end_addr > (unsigned long) map; map = (struct AddrRangeDesc *) (((int) map) + 4 + map->size))
{
unsigned long long top_end;
if (map->Type != MB_ARD_MEMORY)
continue;
top_end = map->BaseAddr + map->Length;
if (top_end > 0x100000000ULL)
top_end = 0x100000000ULL;
/* 0x4000000ULL is 64 MB , 0x200000ULL is 2 MB */
#define MIN_EMU_BASE 0x200000ULL
if (map->Length >= bytes_needed
&& (base = (top_end - bytes_needed) & 0xfffff000) >= MIN_EMU_BASE /* page align */
&& map->Length >= top_end - base)
break; /* success */
base = 0;
}
}
else
grub_printf ("Address Map BIOS Interface is not activated.\n");
if (base < MIN_EMU_BASE)
{
grub_close ();
return errnum = ERR_WONT_FIT;
}
#undef MIN_EMU_BASE
//filepos = 0;
if (grub_read ((char *)((int)base), -1) != filemax)
{
grub_close ();
if (errnum == ERR_NONE)
errnum = ERR_READ;
return 1;
}
grub_close ();
// if (int13_on_hook)
// {
unset_int13_handler (0);
// int13_on_hook = 0;
// }
#define BootCodeOffsetLow (*(unsigned long *)((int)base + 0x10))
#define BootCodeSizeLow (*(unsigned long *)((int)base + 0x18))
read_length = BootCodeSizeLow;
if (read_length > 0x90000)
read_length = 0x90000;
grub_memmove((char *)0x110000, (char *)((unsigned int)base + BootCodeOffsetLow), read_length);
#undef BootCodeOffsetLow
#undef BootCodeSizeLow
if (! chainloader_edx_set)
{
chainloader_edx = (unsigned int)base | 0x41;
chainloader_edx_set = 1;
}
}else{
/* Read the first 640K */
read_length = filemax - chainloader_skip_length;
filepos = ((*(unsigned short *)0x413)<<10) - (chainloader_load_segment<<4) - chainloader_load_offset;
if (read_length > filepos)
read_length = filepos;
filepos = chainloader_skip_length;
if (grub_read ((char *) 0x110000, read_length) != read_length)
{
grub_close ();
kernel_type = KERNEL_TYPE_NONE;
if (errnum == ERR_NONE)
errnum = ERR_EXEC_FORMAT;
break;
}
grub_close ();
/* WinMe support by bean. Thanks! */
// Not a very neat way to test WinME, works anyway
if ((*(unsigned short*)0x110000==0x4D43) &&
// ((*(char*)0x110002==0) || (*(unsigned short*)0x110000==0x4D43)) &&
(chainloader_skip_length==0x800))
{
unsigned long len;
len=(unsigned long)expand_file((char*)0x110000,(char*)0x1B0000);
if (len==0xffffffff || len==0)
{
kernel_type = KERNEL_TYPE_NONE;
//if (errnum ==ERR_NONE)
errnum = ERR_EXEC_FORMAT;
break;
}
grub_memmove((char*)0x110000,(char*)0x1B0000,len);
chainloader_load_length=read_length=len;
}
}
if (chainloader_load_length == -1 || chainloader_load_length > read_length)
chainloader_load_length = read_length;
chain_load_segment = (unsigned short)chainloader_load_segment;
chain_load_offset = (unsigned short)chainloader_load_offset;
chain_boot_CS = (unsigned short)chainloader_boot_CS;
chain_boot_IP = (unsigned short)chainloader_boot_IP;
chain_load_length = chainloader_load_length;
if (! chainloader_ebx_set)
{
chainloader_ebx_set = 1;
chainloader_ebx = boot_drive;
}
chain_ebx = chainloader_ebx;
chain_ebx_set = chainloader_ebx_set;
if (! chainloader_edx_set)
{
chainloader_edx_set = 1;
chainloader_edx = boot_drive;
}
chain_edx = chainloader_edx;
chain_edx_set = chainloader_edx_set;
chain_enable_gateA20 = ! chainloader_disable_A20;
if ((chain_edx & 0x80) == 0)
{
/* clear number of hidden sectors for floppy */
if (! probe_bpb((struct master_and_dos_boot_sector *)0x110000))
if (*((unsigned long *) (0x11001C)))
*((unsigned long *) (0x11001C)) = 0;
} else {
if (! probe_bpb((struct master_and_dos_boot_sector *)0x110000))
if (*((unsigned long *) (0x11001C)) == 0)
{
errnum = ERR_HD_VOL_START_0;
break;
}
}
/* move the new loader to physical address 2MB, overwriting
* the backup area of DOS memory.
*/
/* temp backup the DOS image at 2M to 3M */
if (!chain_enable_gateA20)
grub_memmove((char*)0x300000,(char*)0x200000,chainloader_load_length);
grub_memmove((char*)0x200000,(char*)0x110000,chainloader_load_length);
/* move the code to a safe place at 0x2B0000 */
grub_memmove((char *)HMA_ADDR, HMA_start, 0xfff0);
/* Turn off A20 here if --disable-a20 was specified.
* Note: we won't have access to the odd megas of the memory
* when A20 is off.
*/
if (!chain_enable_gateA20)
{
if (gateA20 (0))
grub_printf("\nGate A20 is turned off successfully.\n");
else {
/* to asure A20 is on when we return to grub. */
gateA20 (1); /* turn on A20 in case it is off */
/* restore the DOS image from physical 3M to 2M */
grub_memmove((char*)0x200000,(char*)0x300000,chainloader_load_length);
errnum = ERR_DISABLE_A20;
break;
}
}
/* Check if we should set the int13 handler. */
if (unset_int13_handler (1) && ! drive_map_slot_empty (bios_drive_map[0]))
{
/* Set the handler. This is somewhat dangerous. */
set_int13_handler (bios_drive_map);
buf_drive = -1;
buf_track = -1;
}
//typedef void (*HMA_FUNC)(void);
//((HMA_FUNC)0x100000)(); /* no return */
/* Jump to high memory area. This will move boot code at
* 0x110000 to the destination load-segment:load-offset;
* setup edx and ebx registers; switch to real mode;
* and jump to boot-cs:boot-ip.
*/
((void (*)(void))HMA_ADDR)(); /* no return */
break;
}
#endif
if (chainloader_disable_A20)
{
if (gateA20 (0))
grub_printf("\nGate A20 is turned off successfully.\n");
else {
/* to asure A20 is on when we return to grub. */
gateA20 (1); /* turn on A20 in case it is off */
errnum = ERR_DISABLE_A20;
break;
}
}
/* Check if we should set the int13 handler. */
if (unset_int13_handler (1) && ! drive_map_slot_empty (bios_drive_map[0]))
{
/* Set the handler. This is somewhat dangerous. */
set_int13_handler (bios_drive_map);
buf_drive = -1;
buf_track = -1;
}
if ((boot_drive & 0x80) == 0)
{
/* clear number of hidden sectors for floppy */
if (! probe_bpb((struct master_and_dos_boot_sector *)BOOTSEC_LOCATION))
if (*((unsigned long *) (BOOTSEC_LOCATION + 0x1C)))
*((unsigned long *) (BOOTSEC_LOCATION + 0x1C)) = 0;
} else {
if (! probe_bpb((struct master_and_dos_boot_sector *)BOOTSEC_LOCATION))
if (*((unsigned long *) (BOOTSEC_LOCATION + 0x1C)) == 0)
{
errnum = ERR_HD_VOL_START_0;
break;
}
}
chain_stage1 (0, BOOTSEC_LOCATION, boot_part_addr); /* no return */
break;
case KERNEL_TYPE_MULTIBOOT:
/* Multiboot */
/* Get the ROM configuration table by INT 15, AH=C0h. */
mbi.config_table = get_rom_config_table ();
/* Get the APM BIOS table. */
get_apm_info ();
if (apm_bios_info.version)
{
mbi.apm_table = (unsigned long) &apm_bios_info;
mbi.flags |= MB_INFO_APM_TABLE;
}
multi_boot ((int) entry_addr, (int) &mbi);
break;
default:
errnum = ERR_BOOT_COMMAND;
//return 1;
}
/* if we get back here, we should go back to what our term was before */
setcursor (old_cursor);
current_term = prev_term;
if (current_term->startup)
/* if our terminal fails to initialize, fall back to console since
* it should always work */
if ((*current_term->startup)() == 0)
current_term = term_table; /* we know that console is first */
return errnum;
}
static struct builtin builtin_boot =
{
"boot",
boot_func,
BUILTIN_MENU | BUILTIN_CMDLINE | BUILTIN_HELP_LIST,
"boot",
"Boot the OS/chain-loader which has been loaded."
};
#endif /* ! GRUB_UTIL */
#ifdef SUPPORT_NETBOOT
#ifndef GRUB_UTIL
/* bootp */
static int
bootp_func (char *arg, int flags)
{
int with_configfile = 0;
if (grub_memcmp (arg, "--with-configfile", sizeof ("--with-configfile") - 1)
== 0)
{
with_configfile = 1;
arg = skip_to (0, arg);
}
if (! bootp ())
{
if (errnum == ERR_NONE)
errnum = ERR_DEV_VALUES;
return 1;
}
/* Notify the configuration. */
print_network_configuration ();
/* XXX: this can cause an endless loop, but there is no easy way to
detect such a loop unfortunately. */
if (with_configfile)
configfile_func (config_file, flags);
return 0;
}
static struct builtin builtin_bootp =
{
"bootp",
bootp_func,
BUILTIN_CMDLINE | BUILTIN_MENU | BUILTIN_HELP_LIST,
"bootp [--with-configfile]",
"Initialize a network device via BOOTP. If the option `--with-configfile'"
" is given, try to load a configuration file specified by the 150 vendor"
" tag."
};
#endif /* ! GRUB_UTIL */
#endif /* SUPPORT_NETBOOT */
/* cat */
static int
cat_func (char *arg, int flags)
{
unsigned char c;
unsigned char s[] = "0123456789abcdef";
int Hex = 0;
unsigned long len, j;
char *p;
unsigned long skip = 0;
unsigned long length = 0xffffffff;
char *locate = 0;
unsigned long len1;
quit_print = 0;
for (;;)
{
if (grub_memcmp (arg, "--hex", 5) == 0)
{
Hex = 1;
}
else if (grub_memcmp (arg, "--skip=", 7) == 0)
{
p = arg + 7;
if (! safe_parse_maxint (&p, (int *)(void *)&skip))
return 1;
}
else if (grub_memcmp (arg, "--length=", 9) == 0)
{
p = arg + 9;
if (! safe_parse_maxint (&p, (int *)(void *)(&length)))
return 1;
}
else if (grub_memcmp (arg, "--locate=", 9) == 0)
{
p = locate = arg + 9;
if (*p == '\"')
{
while (*(++p) != '\"');
arg = ++p; // or: arg = p;
}
}
else
break;
arg = skip_to (0, arg);
}
if (! grub_open (arg))
return 1;
filepos = skip;
if (locate)
{
if (*locate == '\"')
{
for (i = 0; i < 16 && (s[i] = *(++locate)) != '\"'; i++);
len1 = i;
s[i] = 0;
}else{
for (i = 0; i < 16 && (s[i] = *(locate++)) != ' ' && s[i] != '\t'; i++);
len1 = i;
s[i] = 0;
}
//j = skip;
for (j = skip; j - skip < length && (len = grub_read ((char *)(SCRATCHADDR + 16), 16)); j += 16)
{
//if (j == skip)
//{
//grub_memmove ((char *)SCRATCHADDR, (char *)(SCRATCHADDR + 16), 16);
//continue;
//}
if (j != skip)
for (i = 0; i < 16; i++)
if (! grub_memcmp ((char *)&s, (char *)(SCRATCHADDR + i), len1))
{
/* print the address */
grub_printf ("%X ", j - 16 + i);
//break;
}
grub_memmove ((char *)SCRATCHADDR, (char *)(SCRATCHADDR + 16), 16);
//i = len;
}
for (i = 0; i < 16; i++)
if (! grub_memcmp ((char *)&s, (char *)(SCRATCHADDR + i), len1))
{
/* print the address */
grub_printf ("%X ", j - 16 + i);
//break;
}
}else if (Hex == 1)
{
for (j = skip; j - skip < length && (len = grub_read ((char *)&s, 16)); j += 16)
{
/* print line number */
if (j < 0x00000010)
grub_printf ("0000000%X ", j);
else if (j < 0x00000100)
grub_printf ("000000%X ", j);
else if (j < 0x00001000)
grub_printf ("00000%X ", j);
else if (j < 0x00010000)
grub_printf ("0000%X ", j);
else if (j < 0x00100000)
grub_printf ("000%X ", j);
else if (j < 0x01000000)
grub_printf ("00%X ", j);
else if (j < 0x10000000)
grub_printf ("0%X ", j);
else
grub_printf ("%X ", j);
/* print the hex values */
for (i = 0; i < 16; i++)
{
if (i < len && j + i - skip < length)
grub_printf ("%X%X ", (s[i] >> 4), (s[i] & 0x0f));
else
grub_printf (" ");
}
grub_putchar (' ');
/* print the ascii values */
for (i = 0; i < 16; i++)
{
if (i >= len || j + i - skip >= length)
s[i] = ' ';
if (s[i] < ' ' || s[i] >= 127)
s[i] = '.';
grub_putchar (s[i]);
}
grub_putchar ('\n');
if (quit_print)
break;
//grub_printf ("%s\n", s);
}
}else
for (j = 0; j < length && grub_read ((char *)&c, 1); j++)
{
/* Because running "cat" with a binary file can confuse the terminal,
print only some characters as they are. */
if (grub_isspace (c) || (c >= ' ' && c <= '~'))
grub_putchar (c);
else
grub_putchar ('?');
if (quit_print)
break;
}
grub_close ();
return 0;
}
static struct builtin builtin_cat =
{
"cat",
cat_func,
BUILTIN_MENU | BUILTIN_CMDLINE | BUILTIN_HELP_LIST,
"cat [--hex] [--skip=S] [--length=L] [--locate=STRING] FILE",
"Print the contents of the file FILE, or print the locations "
"of the string STRING in FILE."
};
#if ! defined(GRUB_UTIL) && ! defined (STAGE1_5)
/* cdrom */
static int
cdrom_func (char *arg, int flags)
{
char *p;
unsigned long tmp;
for (;;)
{
if (grub_memcmp (arg, "--add-io-ports=", 15) == 0)
{
p = arg + 15;
if (! safe_parse_maxint (&p, (int *)(void *)&tmp))
return 1;
*reg_base_addr_append = tmp;
return 0;
}
else if (grub_memcmp (arg, "--init", 6) == 0)
{
init_atapi();
if (atapi_dev_count)
printf("\nFound %d CD-ROM%s. (Note: Further read could fail if the hardware does not\nfully support ATAPI).\n", atapi_dev_count, atapi_dev_count > 1 ? "s" : "");
else
printf("\nNo CD-ROMs found. Perhaps the hardware does not fully support ATAPI. If your\nCD-ROM uses unusual I/O ports, please specify them with \"--add-io-ports=P\".\n");
return 0;
}
else if (grub_memcmp (arg, "--stop", 6) == 0)
{
atapi_dev_count = 0;
return 0;
}
else
return errnum = ERR_BAD_ARGUMENT;
arg = skip_to (0, arg);
}
return 0;
}
static struct builtin builtin_cdrom =
{
"cdrom",
cdrom_func,
BUILTIN_MENU | BUILTIN_CMDLINE | BUILTIN_HELP_LIST,
"cdrom --add-io-ports=P | --init | --stop",
"Initialise/stop atapi cdroms or set additional I/O ports for a possible atapi cdrom device."
" The high word of P specifies the base register of the control block registers, and"
" the low word of P specifies the base register of the command block registers."
};
#endif
/* chainloader */
static int
chainloader_func (char *arg, int flags)
{
char *p;
int force = 0;
char *filename;
// unsigned long hidden_sectors;
chainloader_load_segment = -1;//0x0000;
chainloader_load_offset = -1;//0x7c00;
chainloader_load_length = -1;//0x200;
chainloader_skip_length = 0;
chainloader_boot_CS = -1;//0x0000;
chainloader_boot_IP = -1;//0x7c00;
chainloader_ebx = 0;
chainloader_ebx_set = 0;
chainloader_edx = 0;
chainloader_edx_set = 0;
chainloader_disable_A20 = 0;
is_sdi = 0;
for (;;)
{
if (grub_memcmp (arg, "--force", 7) == 0)
{
force = 1;
}
else if (grub_memcmp (arg, "--load-segment=", 15) == 0)
{
p = arg + 15;
if (! safe_parse_maxint (&p, &chainloader_load_segment))
return 1;
if (chainloader_load_segment < 0 || chainloader_load_segment >= 0xa000)
return errnum = ERR_INVALID_LOAD_SEGMENT;
}
else if (grub_memcmp (arg, "--load-offset=", 14) == 0)
{
p = arg + 14;
if (! safe_parse_maxint (&p, &chainloader_load_offset))
return 1;
if (chainloader_load_offset < 0 || chainloader_load_offset > 0xffff)
return errnum = ERR_INVALID_LOAD_OFFSET;
}
else if (grub_memcmp (arg, "--load-length=", 14) == 0)
{
p = arg + 14;
if (! safe_parse_maxint (&p, &chainloader_load_length))
return 1;
if (chainloader_load_length < 512 || chainloader_load_length > 0xa0000)
return errnum = ERR_INVALID_LOAD_LENGTH;
}
else if (grub_memcmp (arg, "--skip-length=", 14) == 0)
{
p = arg + 14;
if (! safe_parse_maxint (&p, &chainloader_skip_length))
return 1;
if (chainloader_skip_length < 0)
return errnum = ERR_INVALID_SKIP_LENGTH;
}
else if (grub_memcmp (arg, "--boot-cs=", 10) == 0)
{
p = arg + 10;
if (! safe_parse_maxint (&p, &chainloader_boot_CS))
return 1;
if (chainloader_boot_CS < 0 || chainloader_boot_CS > 0xffff)
return errnum = ERR_INVALID_BOOT_CS;
}
else if (grub_memcmp (arg, "--boot-ip=", 10) == 0)
{
p = arg + 10;
if (! safe_parse_maxint (&p, &chainloader_boot_IP))
return 1;
if (chainloader_boot_IP < 0 || chainloader_boot_IP > 0xffff)
return errnum = ERR_INVALID_BOOT_IP;
}
else if (grub_memcmp (arg, "--ebx=", 6) == 0)
{
p = arg + 6;
if (! safe_parse_maxint (&p, (int *)(void *)&chainloader_ebx))
return 1;
chainloader_ebx_set = 1;
}
else if (grub_memcmp (arg, "--edx=", 6) == 0)
{
p = arg + 6;
if (! safe_parse_maxint (&p, (int *)(void *)&chainloader_edx))
return 1;
chainloader_edx_set = 1;
}
else if (grub_memcmp (arg, "--sdi", 5) == 0)
{
is_sdi = 1;
}
else if (grub_memcmp (arg, "--disable-a20", 13) == 0)
{
chainloader_disable_A20 = 1;
}
else
break;
arg = skip_to (0, arg);
}
//file = arg;
grub_memmove (chainloader_file, arg, 255);
chainloader_file[255]=0;
kernel_type = KERNEL_TYPE_CHAINLOADER;
errnum = ERR_NONE;
if (is_sdi)
return 0;
/* Get the drive number. */
filename = set_device (arg);
if (errnum) {
/* No device specified. Default to the root device. */
current_drive = saved_drive;
//current_partition = saved_partition;
filename = arg;
errnum = 0;
}
if (filename == 0)
filename = arg;
/* check bootable cdrom */
if (*filename == 0 || *filename == ' ' || *filename == '\t')
{
//check_bootable_cdrom (current_drive);
//unsigned long i;
unsigned long tmp;
unsigned short tmp1;
unsigned short tmp2;
// struct geometry tmp_geom;
tmp = current_drive;
/* check bootable type of drive (tmp) */
//grub_printf ("get_diskinfo(0x%X)\n", tmp);
/* Get the geometry. This ensures that the drive is present. */
if (get_diskinfo (tmp, &tmp_geom))
{
kernel_type = KERNEL_TYPE_NONE;
return errnum = ERR_NO_DISK;
}
//grub_printf ("get_diskinfo ok.\n");
/* open the drive */
grub_sprintf ((char *)SCRATCHADDR, "(0x%X)+0x%X", tmp, tmp_geom.total_sectors);
//grub_printf ("grub_open(%s)\n", SCRATCHADDR);
if (! grub_open ((char *)SCRATCHADDR))
{
kernel_type = KERNEL_TYPE_NONE;
return 1;
}
//grub_printf ("filemax=%X\n", filemax);
/* read the EL Torito Volume Descriptor */
//filemax = 0x12 * 0x800;
filepos = 0x11 * 0x800;
if (grub_read ((char *)SCRATCHADDR, 512) != 512)
{
grub_close ();
if (errnum == 0)
errnum = ERR_EXEC_FORMAT;
kernel_type = KERNEL_TYPE_NONE;
return errnum;
}
//grub_printf ("grub_read ok.\n");
/* check the EL Torito Volume Descriptor */
if (memcmp ((char *)SCRATCHADDR, "\0CD001\1EL TORITO SPECIFICATION\0", 31))
{
kernel_type = KERNEL_TYPE_NONE;
return errnum = ERR_EXEC_FORMAT;
}
/* get absolut start sector number for boot catalog */
tmp = *(unsigned long *)((char *)SCRATCHADDR + 0x47);
/* read the Validation Entry and Initial/Default Entry */
//filemax = (tmp + 1) * 0x800;
filepos = tmp * 0x800;
if (grub_read ((char *)SCRATCHADDR, 512) != 512)
{
grub_close ();
if (errnum == 0)
errnum = ERR_EXEC_FORMAT;
kernel_type = KERNEL_TYPE_NONE;
return errnum;
}
tmp1 = 0;
for (i = 0; i < 16; i++)
{
tmp = *(((unsigned short *)(char *)SCRATCHADDR) + i);
tmp1 += tmp;
if ((i == 0 && tmp != 1) || (i == 15 && tmp != 0xAA55))
break;
}
if (tmp1 || i < 16)
{
kernel_type = KERNEL_TYPE_NONE;
return errnum = ERR_EXEC_FORMAT;
}
/* Initial/Default Entry format
*
* Offset Type Description
* ------ ---- ----------------------------------------------
* 0 Byte Boot Indicator. 88=Bootable, 00=Not Bootable
*
* 1 Byte Boot media type.
* 0 = No Emulation
* 1 = 1.2 meg diskette
* 2 = 1.44 meg diskette
* 3 = 2.88 meg diskette
* 4 = Hard Disk(drive 80)
*
* 2 Word Load Segment. 0 for 7C0
*
* 4 Byte System Type.
*
* 5 Byte Unused, must be 0.
*
* 6 Word Sector Count. This is the number of virtual/
* emulated sectors the system will store at Load
* Segment during the initial boot procedure.
*
* 8 DWord Load RBA. This is the start address of the
* virtual disk. CD's use Relative/Logical block
* addressing.
*
* C Bytes Unused, must be 0's.
*
*/
tmp = *(unsigned char *)(SCRATCHADDR + 0x20);
if (tmp != 0x88)
{
kernel_type = KERNEL_TYPE_NONE;
return errnum = ERR_EXEC_FORMAT;
}
tmp = *((unsigned char *)SCRATCHADDR + 0x25);
if (tmp)
{
kernel_type = KERNEL_TYPE_NONE;
return errnum = ERR_EXEC_FORMAT;
}
tmp2 = *((unsigned short *)((unsigned char *)SCRATCHADDR + 0x22));
printf ("\nLoad segment: 0x%X\t", tmp2);
if (tmp2 == 0)
tmp2 = 0x7C0;
*(unsigned short *)&(chainloader_file[0x0C]) = tmp2; /* load segment */
tmp = *((unsigned char *)SCRATCHADDR + 0x24);
printf ("System Type: 0x%X\t", tmp);
i = *((unsigned short *)((unsigned char *)SCRATCHADDR + 0x26));
printf ("Sector Count: 0x%X\n", i);
*(unsigned short *)&(chainloader_file[0x0E]) = i; /* sector count */
tmp = *((unsigned long *)((unsigned char *)SCRATCHADDR + 0x28));
printf ("Load RBA: 0x%X\t", tmp);
*(unsigned long *)&(chainloader_file[4]) = tmp; /* LBA */
tmp1 = *((unsigned char *)SCRATCHADDR + 0x21);
if (tmp1 > 4)
{
kernel_type = KERNEL_TYPE_NONE;
return errnum = ERR_EXEC_FORMAT;
}
printf ("Boot Type: %s\n",
tmp1 == 0 ? "0 = No Emulation" :
tmp1 == 1 ? "1 = 1.2M floppy" :
tmp1 == 2 ? "2 = 1.44M floppy" :
tmp1 == 3 ? "3 = 2.88M floppy" : "Hard Disk");
/* No emulation mode uses 2048-byte sector size. */
if (tmp1 == 0 && buf_geom.sector_size != 2048)
{
kernel_type = KERNEL_TYPE_NONE;
return errnum = ERR_EXEC_FORMAT;
}
chainloader_file[1] = tmp1;
chainloader_file[2] = tmp1 == 0 ? current_drive : tmp1 == 4 ? 0x80 : 0x00;
if (tmp1 == 0)
{
#if 1
/* this is no-emulation mode. we can directly boot it without using BIOS int13/4C00 */
//kernel_type = KERNEL_TYPE_CHAINLOADER;
sprintf (chainloader_file, "(%d)%d+%d", current_drive, tmp, (i + 3) / 4);
chainloader_load_segment = tmp2;//0x0000;
chainloader_load_offset = 0;//0x7c00;
chainloader_load_length = i * 512;//0x200;
chainloader_skip_length = 0;
chainloader_boot_CS = tmp2;//0x0000;
chainloader_boot_IP = 0;//0x7c00;
//chainloader_ebx = 0;
//chainloader_ebx_set = 0;
chainloader_edx = current_drive;
chainloader_edx_set = 1;
//chainloader_disable_A20 = 0;
return errnum = 0;
#else
chainloader_file[0x10] = (buf_geom.cylinders - 1) && 0xFF; /* CH (low 8 bits of max cylinder) */
chainloader_file[0x11] = buf_geom.sectors | (((buf_geom.cylinders - 1) >> 8) << 6); /* CL (max sector and high 2 bits of max cylinder) */
chainloader_file[0x12] = buf_geom.heads - 1; /* DH (max head)*/
#endif
}else if (tmp1 == 4){
/* hard drive emulation mode */
/* read the hard drive partition table */
//filemax = (tmp + 1) * 0x800; /* tmp = LBA */
filepos = tmp * 0x800;
if (grub_read ((char *)SCRATCHADDR, 512) != 512)
{
grub_close ();
if (errnum == 0)
errnum = ERR_EXEC_FORMAT;
kernel_type = KERNEL_TYPE_NONE;
return errnum;
}
/* use the first entry to determin the geometry */
chainloader_file[0x12] = *(((char *)SCRATCHADDR) + 0x1C3); /* Max head */
chainloader_file[0x11] = *(((char *)SCRATCHADDR) + 0x1C4); /* Max Sector */
chainloader_file[0x10] = *(((char *)SCRATCHADDR) + 0x1C5); /* Max Cylinder */
tmp1 = chainloader_file[0x11] & 63;
if (tmp1 == 0)
{
kernel_type = KERNEL_TYPE_NONE;
return errnum;
}
tmp = *(((char *)SCRATCHADDR) + 0x1C0) & 63;
if (tmp1 < tmp)
tmp1 = tmp;
tmp = *(unsigned long *)(((char *)SCRATCHADDR) + 0x1C6);
if (tmp <= 63)
{
if (tmp1 < tmp)
tmp1 = tmp;
}
/* Now tmp1 is sectors per track */
tmp = chainloader_file[0x10] | ((chainloader_file[0x11] & 0xC0) << 2); /* Max Cylinder */
i = *(unsigned long *)(((char *)SCRATCHADDR) + 0x1CA); /* total sectors in partition */
i /= tmp1;
/* if i > 255, this indicates that the cylinders exceeds 1024. */
while (i / (tmp + 1) > 255)
tmp += 1024;
if (i / (tmp + 1) > 255)
{
tmp = 1023;
}
i /= (tmp + 1);
if (i > 255)
i = 255;
/* Now i is number of heads */
chainloader_file[0x12] = i - 1; /* Max head */
chainloader_file[0x11] = tmp1 | ((tmp >> 8) << 6); /* Max Sector */
chainloader_file[0x10] = tmp; /* Max Cylinder */
}else{
/* floppy emulation mode */
chainloader_file[0x10] = 0x4F; /* CH (low 8 bits of max cylinder) */
chainloader_file[0x11] = (tmp1 == 1)? 0x0F : (tmp1 == 2)? 0x12 : 0x24; /* CL (max sector and high 2 bits of max cylinder) */
chainloader_file[0x12] = 1; /* DH (max head)*/
}
/* Construct the specification packet */
chainloader_file[0] = 0x13;
chainloader_file[3] = 0;
*(unsigned long *)&(chainloader_file[8]) = 0;
kernel_type = KERNEL_TYPE_CDROM;
return errnum = 0;
}
/* Open the file. */
if (! grub_open (arg))
{
kernel_type = KERNEL_TYPE_NONE;
return 1;
}
/* Read the first block. */
if (grub_read ((char *) BOOTSEC_LOCATION, SECTOR_SIZE) != SECTOR_SIZE)
{
grub_close ();
kernel_type = KERNEL_TYPE_NONE;
/* This below happens, if a file whose size is less than 512 bytes
is loaded. */
if (errnum == ERR_NONE)
errnum = ERR_EXEC_FORMAT;
return 1;
}
if (chainloader_skip_length > filemax)
{
kernel_type = KERNEL_TYPE_NONE;
return errnum = ERR_INVALID_SKIP_LENGTH;
}
// hidden_sectors = part_start;
if (*((long *)BOOTSEC_LOCATION) == 0x49445324 /* $SDI */)
{
is_sdi = 1;
grub_printf("SDI signature: %s\n", (char *)(BOOTSEC_LOCATION));
}
else
if ((*(long long *)BOOTSEC_LOCATION | 0xFF00LL) == 0x4749464E4F43FFEBLL && filemax > 0x4000)
{
if (chainloader_load_segment == -1)
chainloader_load_segment = 0x0060;
if (chainloader_load_offset == -1)
chainloader_load_offset = 0;
if (chainloader_load_length == -1)
chainloader_load_length = filemax;
if (! chainloader_ebx_set)
{
chainloader_ebx = current_drive | ((current_partition >> 8) & 0xFF00);
chainloader_ebx_set = 1;
}
grub_close ();
/* FIXME: Where should the BPB be placed for FreeDOS's KERNEL.SYS?
* In the current implementation it is placed at 0000:7C00
* but has no effect, since the KERNEL.SYS body will later
* overwrite 0000:7C00 on issuing the `boot' command.
*/
if ((chainloader_ebx & 0xFF00) == 0xFF00) /* check if partition number == 0xFF */
grub_sprintf ((char *)SCRATCHADDR, "(%d)+1", (chainloader_ebx & 0xff));
else
grub_sprintf ((char *)SCRATCHADDR, "(%d,%d)+1", (chainloader_ebx & 0xff), ((chainloader_ebx >> 8) & 0xff));
if (! grub_open ((char *)SCRATCHADDR))
{
kernel_type = KERNEL_TYPE_NONE;
return 1;
}
/* Read the boot sector of the partition onto 0000:7C00 */
if (grub_read ((char *) BOOTSEC_LOCATION, SECTOR_SIZE) != SECTOR_SIZE)
{
grub_close ();
kernel_type = KERNEL_TYPE_NONE;
/* This below happens, if a file whose size is less than 512 bytes
is loaded. */
if (errnum == ERR_NONE)
errnum = ERR_EXEC_FORMAT;
return 1;
}
/* modify the hidden sectors */
/* FIXME: Does the boot drive number also need modifying? */
if (*((unsigned long *) (BOOTSEC_LOCATION + BOOTSEC_BPB_HIDDEN_SECTORS)))
*((unsigned long *) (BOOTSEC_LOCATION + BOOTSEC_BPB_HIDDEN_SECTORS)) = part_start;
grub_printf("Will boot FreeDOS from drive=0x%x, partition=0x%x(hidden sectors=0x%x)\n",
current_drive/*(chainloader_ebx & 0x80)*/, ((current_partition >> 16) & 0xff), part_start);
}
else
if (*(short *)BOOTSEC_LOCATION == 0x5A4D && filemax > 0x10000 &&
*((unsigned short *) (BOOTSEC_LOCATION + BOOTSEC_SIG_OFFSET)) == 0
/* && (*(long *)(BOOTSEC_LOCATION + 0xA2)) == 0 */ )
{
int err;
/* Read the second sector. */
if (grub_read ((char *) BOOTSEC_LOCATION, SECTOR_SIZE) != SECTOR_SIZE)
{
grub_close ();
kernel_type = KERNEL_TYPE_NONE;
return 1;
}
err = (*(short *)BOOTSEC_LOCATION != 0x4A42);
filepos += 0x200; /* skip the third sector */
/* Read the fourth sector. */
if (grub_read ((char *) BOOTSEC_LOCATION, SECTOR_SIZE) != SECTOR_SIZE)
{
grub_close ();
kernel_type = KERNEL_TYPE_NONE;
return 1;
}
err |= (*((unsigned short *) (BOOTSEC_LOCATION + BOOTSEC_SIG_OFFSET)) != 0x534D);
/* Read the fifth sector.
* check the compress signature "CM" of IO.SYS of WinME */
if (grub_read ((char *) BOOTSEC_LOCATION, SECTOR_SIZE) != SECTOR_SIZE)
{
grub_close ();
kernel_type = KERNEL_TYPE_NONE;
return 1;
}
if (! err)
{
if (chainloader_load_segment == -1)
chainloader_load_segment = 0x0070;
if (chainloader_load_offset == -1)
chainloader_load_offset = 0;
if (chainloader_load_length == -1)
chainloader_load_length = filemax;
if (chainloader_skip_length == 0)
chainloader_skip_length = 0x0800;
/* WinME support by bean. Thanks! */
// Input parameter for SYSINIT
// BX,AX: Start sector for the data area of FAT. It doesn't needs to
// be set. However, we should at least clear BX, otherwise,
// it would have some minor problem when booting WinME.
// DI: Length of the boot code, don't need to be set.
// BP: 0x7C00, boot sector pointer, don't need to be set.
// DH: Media ID (BS[0x15]) , 0xF0 for floppy, 0xF8 for harddisk
// DL: Drive number (BS[0x40] for FAT32)
if (! chainloader_edx_set)
{
chainloader_edx = current_drive | ((current_partition >> 8) & 0xFF00);
chainloader_edx_set = 1;
}
if (! chainloader_ebx_set)
{
chainloader_ebx = 0; // clear BX for WinME
chainloader_ebx_set = 1;
}
/* save partition number to the high word */
chainloader_edx = (chainloader_edx & 0xFF00FFFF) | ((chainloader_edx & 0xFF00) << 8);
// set media descriptor in DH for WinME
chainloader_edx = (chainloader_edx & 0xFFFF00FF) | 0xF000 | ((chainloader_edx & 0x80) << 4);
grub_close ();
/* FIXME: Where should the BPB be placed for MS-DOS's IO.SYS?
* In the current implementation it is placed at 0000:7C00
* but has no effect, since the IO.SYS body will later
* overwrite 0000:7C00 on issuing the `boot' command.
*/
if ((chainloader_edx & 0xFF0000) == 0xFF0000) /* check if partition number == 0xFF */
grub_sprintf ((char *)SCRATCHADDR, "(%d)+1", (chainloader_edx & 0xff));
else
grub_sprintf ((char *)SCRATCHADDR, "(%d,%d)+1", (chainloader_edx & 0xff), ((chainloader_edx >> 16) & 0xff));
if (! grub_open ((char *)SCRATCHADDR))
{
kernel_type = KERNEL_TYPE_NONE;
return 1;
}
/* Read the boot sector of the partition onto 0000:7C00 */
if (grub_read ((char *) BOOTSEC_LOCATION, SECTOR_SIZE) != SECTOR_SIZE)
{
grub_close ();
kernel_type = KERNEL_TYPE_NONE;
/* This below happens, if a file whose size is less than 512 bytes
is loaded. */
if (errnum == ERR_NONE)
errnum = ERR_EXEC_FORMAT;
return 1;
}
/* modify the hidden sectors */
/* FIXME: Does the boot drive number also need modifying? */
if (*((unsigned long *) (BOOTSEC_LOCATION + BOOTSEC_BPB_HIDDEN_SECTORS)))
*((unsigned long *) (BOOTSEC_LOCATION + BOOTSEC_BPB_HIDDEN_SECTORS)) = part_start;
grub_printf("Will boot MS-DOS %c.x from drive=0x%x, partition=0x%x(hidden sectors=0x%x)\n",
((*(unsigned short *) BOOTSEC_LOCATION) == 0x4D43)? '8' : '7',
current_drive/*(chainloader_edx & 0x80)*/, ((current_partition >> 16) & 0xff), part_start);
}
}
else
if (((*(long *)BOOTSEC_LOCATION) & 0x00FF00FF) == 0x000100E9 && filemax > 0x30000 &&
(*((unsigned short *) (BOOTSEC_LOCATION + BOOTSEC_SIG_OFFSET)) != BOOTSEC_SIGNATURE))
{
//grub_printf("current_drive=0x%x, current_partition=0x%x(part_start=0x%x)\n", current_drive, current_partition, part_start);
if (chainloader_load_segment == -1)
chainloader_load_segment = 0x2000;
if (chainloader_load_offset == -1)
chainloader_load_offset = 0;
if (chainloader_load_length == -1)
chainloader_load_length = filemax;
if (! chainloader_edx_set)
{
chainloader_edx = current_drive | ((current_partition >> 8) & 0xFF00);
chainloader_edx_set = 1;
}
grub_close ();
if ((chainloader_edx & 0xFF00) == 0xFF00)
grub_sprintf ((char *)SCRATCHADDR, "(%d)+1", (chainloader_edx & 0xff));
else
grub_sprintf ((char *)SCRATCHADDR, "(%d,%d)+1", (chainloader_edx & 0xff), ((chainloader_edx >> 8) & 0xff));
if (! grub_open ((char *)SCRATCHADDR))
{
kernel_type = KERNEL_TYPE_NONE;
return 1;
}
/* Read the boot sector of the partition onto 0000:7C00 */
if (grub_read ((char *) BOOTSEC_LOCATION, SECTOR_SIZE) != SECTOR_SIZE)
{
grub_close ();
kernel_type = KERNEL_TYPE_NONE;
/* This below happens, if a file whose size is less than 512 bytes
is loaded. */
if (errnum == ERR_NONE)
errnum = ERR_EXEC_FORMAT;
return 1;
}
//grub_printf("current_drive=0x%x, current_partition=0x%x(part_start=0x%x)\n", current_drive, current_partition, part_start);
/* modify the hidden sectors */
/* FIXME: Does the boot drive number also need modifying? */
if (*((unsigned long *) (BOOTSEC_LOCATION + BOOTSEC_BPB_HIDDEN_SECTORS)))
*((unsigned long *) (BOOTSEC_LOCATION + BOOTSEC_BPB_HIDDEN_SECTORS)) = part_start;
grub_printf("Will boot NTLDR from drive=0x%x, partition=0x%x(hidden sectors=0x%x)\n", current_drive, ((current_partition >> 16) & 0xff), part_start);
}
else
/* If not loading it forcibly, check for the signature. */
if (! force
&& (*((unsigned short *) (BOOTSEC_LOCATION + BOOTSEC_SIG_OFFSET))
!= BOOTSEC_SIGNATURE))
{
grub_close ();
errnum = ERR_EXEC_FORMAT;
kernel_type = KERNEL_TYPE_NONE;
return 1;
}
grub_close ();
// /* XXX: Windows evil hack. For now, only the first five letters are
// checked. */
// if (IS_PC_SLICE_TYPE_FAT (current_slice)
// && ! grub_memcmp ((char *) BOOTSEC_LOCATION + BOOTSEC_BPB_SYSTEM_ID,
// "MSWIN", 5))
/* if BPB exists, we can reliablly modify the hidden sectors. */
if (! probe_bpb((struct master_and_dos_boot_sector *)BOOTSEC_LOCATION))
if (*((unsigned long *) (BOOTSEC_LOCATION + BOOTSEC_BPB_HIDDEN_SECTORS)))
*((unsigned long *) (BOOTSEC_LOCATION + BOOTSEC_BPB_HIDDEN_SECTORS))
= part_start;
if (chainloader_load_length == -1)
chainloader_load_length = filemax;
if (chainloader_load_length > 0xA0000)
chainloader_load_length = 0xA0000;
errnum = ERR_NONE;
return 0;
}
static struct builtin builtin_chainloader =
{
"chainloader",
chainloader_func,
BUILTIN_MENU | BUILTIN_CMDLINE | BUILTIN_HELP_LIST,
"chainloader [--force] [--load-segment=LS] [--load-offset=LO]"
"\n[--load-length=LL] [--skip-length=SL] [--boot-cs=CS] [--boot-ip=IP]"
"\n[--ebx=EBX] [--edx=EDX] [--sdi] [--disable-a20] FILE",
"Load the chain-loader FILE. If --force is specified, then load it"
" forcibly, whether the boot loader signature is present or not."
" LS:LO specifies the load address other than 0000:7C00. LL specifies"
" the length of the boot image(between 512 and 640K). CS:IP specifies"
" the address where the boot image will gain control. EBX/EDX specifies"
" the EBX/EDX register value when the boot image gets control. Use --sdi"
" if FILE is a System Deployment Image, which is of the Windows XP"
" RAM boot file format. Use --disable-a20 if you wish to turn off"
" A20 when transferring control to the boot image."
" SL specifies length in bytes at the beginning of the image to be"
" skipped when loading."
};
/* This function could be used to debug new filesystem code. Put a file
in the new filesystem and the same file in a well-tested filesystem.
Then, run "cmp" with the files. If no output is obtained, probably
the code is good, otherwise investigate what's wrong... */
/* cmp FILE1 FILE2 */
static int
cmp_func (char *arg, int flags)
{
/* The filenames. */
char *file1, *file2;
/* The addresses. */
char *addr1, *addr2;
//int i;
/* The size of the file. */
int size;
/* Get the filenames from ARG. */
file1 = arg;
file2 = skip_to (0, arg);
if (! *file1 || ! *file2)
{
errnum = ERR_BAD_ARGUMENT;
return 1;
}
/* Terminate the filenames for convenience. */
nul_terminate (file1);
nul_terminate (file2);
/* Read the whole data from FILE1. */
addr1 = (char *) RAW_ADDR (0x400000);
if (! grub_open (file1))
return 1;
/* Get the size. */
size = filemax;
if (grub_read (addr1, -1) != size)
{
grub_close ();
return 1;
}
grub_close ();
/* Read the whole data from FILE2. */
addr2 = addr1 + size;
if (! grub_open (file2))
return 1;
/* Check if the size of FILE2 is equal to the one of FILE2. */
if (size != filemax)
{
grub_printf ("Differ in size: 0x%x [%s], 0x%x [%s]\n",
size, file1, filemax, file2);
grub_close ();
return 0;
}
if (! grub_read (addr2, -1))
{
grub_close ();
return 1;
}
grub_close ();
/* Now compare ADDR1 with ADDR2. */
for (i = 0; i < size; i++)
{
if (addr1[i] != addr2[i])
grub_printf ("Differ at the offset %d: 0x%x [%s], 0x%x [%s]\n",
i, (unsigned) addr1[i], file1,
(unsigned) addr2[i], file2);
}
return 0;
}
static struct builtin builtin_cmp =
{
"cmp",
cmp_func,
BUILTIN_MENU | BUILTIN_CMDLINE,
"cmp FILE1 FILE2",
"Compare the file FILE1 with the FILE2 and inform the different values"
" if any."
};
static char *color_list[16] =
{
"black",
"blue",
"green",
"cyan",
"red",
"magenta",
"brown",
"light-gray",
"dark-gray",
"light-blue",
"light-green",
"light-cyan",
"light-red",
"light-magenta",
"yellow",
"white"
};
static int color_number (char *str);
/* Convert the color name STR into the magical number. */
static int
color_number (char *str)
{
char *ptr;
//int i;
int color = 0;
/* Find the separator. */
for (ptr = str; *ptr && *ptr != '/'; ptr++)
;
/* If not found, return -1. */
if (! *ptr)
return -1;
/* Terminate the string STR. */
*ptr++ = 0;
/* If STR contains the prefix "blink-", then set the `blink' bit
in COLOR. */
if (substring ("blink-", str, 0) <= 0)
{
color = 0x80;
str += 6;
}
/* Search for the color name. */
for (i = 0; i < 16; i++)
if (grub_strcmp (color_list[i], str) == 0)
{
color |= i;
break;
}
if (i == 16)
return -1;
str = ptr;
nul_terminate (str);
/* Search for the color name. */
for (i = 0; i < 8; i++)
if (grub_strcmp (color_list[i], str) == 0)
{
color |= i << 4;
break;
}
if (i == 8)
return -1;
return color;
}
/* color */
/* Set new colors used for the menu interface. Support two methods to
specify a color name: a direct integer representation and a symbolic
color name. An example of the latter is "blink-light-gray/blue". */
static int
color_func (char *arg, int flags)
{
char *normal;
char *highlight;
int new_normal_color;
int new_highlight_color;
normal = arg;
highlight = skip_to (0, arg);
new_normal_color = color_number (normal);
if (new_normal_color < 0 && ! safe_parse_maxint (&normal, &new_normal_color))
return 1;
/* The second argument is optional, so set highlight_color
to inverted NORMAL_COLOR. */
if (! *highlight)
new_highlight_color = ((new_normal_color >> 4)
| ((new_normal_color & 0xf) << 4));
else
{
new_highlight_color = color_number (highlight);
if (new_highlight_color < 0
&& ! safe_parse_maxint (&highlight, &new_highlight_color))
return 1;
}
if (current_term->setcolor)
current_term->setcolor (new_normal_color, new_highlight_color);
return 0;
}
static struct builtin builtin_color =
{
"color",
color_func,
BUILTIN_CMDLINE | BUILTIN_MENU | BUILTIN_HELP_LIST,
"color NORMAL [HIGHLIGHT]",
"Change the menu colors. The color NORMAL is used for most"
" lines in the menu, and the color HIGHLIGHT is used to highlight the"
" line where the cursor points. If you omit HIGHLIGHT, then the"
" inverted color of NORMAL is used for the highlighted line."
" The format of a color is \"FG/BG\". FG and BG are symbolic color names."
" A symbolic color name must be one of these: black, blue, green,"
" cyan, red, magenta, brown, light-gray, dark-gray, light-blue,"
" light-green, light-cyan, light-red, light-magenta, yellow and white."
" But only the first eight names can be used for BG. You can prefix"
" \"blink-\" to FG if you want a blinking foreground color."
};
/* configfile */
static int
configfile_func (char *arg, int flags)
{
char *new_config = config_file;
/* check possible filename overflow */
if (grub_strlen (arg) >= ((char *)0x8270 - new_config))
return errnum = ERR_WONT_FIT;
/* Check if the file ARG is present. */
if (! grub_open (arg))
return 1;
grub_close ();
/* Copy ARG to CONFIG_FILE. */
while ((*new_config++ = *arg++) != 0)
;
//#ifdef GRUB_UTIL
/* Force to load the configuration file. */
use_config_file = 1;
//#endif
/* Make sure that the user will not be authoritative. */
auth = 0;
buf_drive = -1; /* invalidate disk cache. */
buf_track = -1; /* invalidate disk cache. */
saved_entryno = 0;
force_cdrom_as_boot_device = 0;
boot_drive = current_drive;
install_partition = current_partition;
current_drive = GRUB_INVALID_DRIVE;
current_partition = 0xFFFFFF;
fsys_type = NUM_FSYS;
boot_part_addr = 0;
current_slice = 0;
#ifdef GRUB_UTIL
/* Restart cmain. */
grub_longjmp (restart_env, 0);
#else
/* Restart pre_stage2. */
chain_stage1(0, 0x8200, boot_part_addr);
#endif
/* Never reach here. */
return 0;
}
static struct builtin builtin_configfile =
{
"configfile",
configfile_func,
BUILTIN_MENU | BUILTIN_CMDLINE | BUILTIN_HELP_LIST,
"configfile FILE",
"Load FILE as the configuration file."
};
/* debug */
static int
debug_func (char *arg, int flags)
{
if (debug)
{
debug = 0;
grub_printf (" Debug mode is turned off\n");
}
else
{
debug = 1;
grub_printf (" Debug mode is turned on\n");
}
return 0;
}
static struct builtin builtin_debug =
{
"debug",
debug_func,
BUILTIN_MENU | BUILTIN_CMDLINE,
"debug",
"Turn on/off the debug mode."
};
/* default */
static int
default_func (char *arg, int flags)
{
int len;
char *p;
#if defined(STAGE1_5) || defined(GRUB_UTIL)
// char mbr[SECTOR_SIZE];
#endif
char *default_file = (char *) DEFAULT_FILE_BUF;
#ifndef SUPPORT_DISKLESS
if (grub_memcmp (arg, "saved", 5) == 0)
{
default_entry = saved_entryno;
return 0;
}
#endif /* SUPPORT_DISKLESS */
if (safe_parse_maxint (&arg, &default_entry))
return 0;
errnum = ERR_NONE;
//printf("default_func open %s\n", arg);
/* Open the file. */
if (! grub_open (arg))
return errnum;
if (compressed_file)
{
grub_close ();
return errnum = ERR_DEFAULT_FILE;
}
len = grub_read (mbr, SECTOR_SIZE);
grub_close ();
//printf("default_func errnum=%d\n", errnum);
if (len < 180 || filemax > 2048)
return errnum = ERR_DEFAULT_FILE;
//printf("default_func errnum=%d\n", errnum);
/* check file content for safety */
p = mbr;
while (p < mbr + len - 100 && grub_memcmp (++p, warning_defaultfile, 73));
//printf("default_func errnum=%d\n", errnum);
//grub_printf ("p=%x, mbr=%x, len=%x, mbr + len - 160 = %x\n", p, mbr, len, mbr + len - 160);
if (p > mbr + len - 160)
return errnum = ERR_DEFAULT_FILE;
//printf("default_func errnum=%d\n", errnum);
len = grub_strlen (arg);
if (len >= DEFAULT_FILE_BUFLEN)
return errnum = ERR_WONT_FIT;
//printf("default_func errnum=%d\n", errnum);
grub_memmove (default_file, arg, len);
default_file[len] = 0;
boot_drive = current_drive;
install_partition = current_partition;
p = mbr;
if (safe_parse_maxint (&p, &default_entry))
return 0;
//printf("default_func errnum=%d\n", errnum);
//for(;;);
return errnum;
}
static struct builtin builtin_default =
{
"default",
default_func,
BUILTIN_MENU | BUILTIN_CMDLINE | BUILTIN_HELP_LIST,
"default [NUM | `saved' | FILE]",
"Set the default entry to entry number NUM (if not specified, it is"
" 0, the first entry), or to the entry number saved by savedefault if"
" the key word `saved\' is specified, or to the entry number previously"
" saved in the specified file FILE. When FILE is specified, all subsequent"
" `savedefault\' commands will save default entry numbers into"
" FILE."
#if 0
"default [NUM | `saved']",
"Set the default entry to entry number NUM (if not specified, it is"
" 0, the first entry) or the entry number saved by savedefault."
#endif
};
#ifdef GRUB_UTIL
/* device */
static int
device_func (char *arg, int flags)
{
char *drive = arg;
char *device;
/* Get the drive number from DRIVE. */
if (! set_device (drive))
return 1;
/* Get the device argument. */
device = skip_to (0, drive);
/* Terminate DEVICE. */
nul_terminate (device);
if (! *device || ! check_device (device))
{
errnum = ERR_FILE_NOT_FOUND;
return 1;
}
assign_device_name (current_drive, device);
return 0;
}
static struct builtin builtin_device =
{
"device",
device_func,
BUILTIN_MENU | BUILTIN_CMDLINE | BUILTIN_HELP_LIST,
"device DRIVE DEVICE",
"Specify DEVICE as the actual drive for a BIOS drive DRIVE. This command"
" can be used only in the grub shell."
};
#endif /* GRUB_UTIL */
#ifdef SUPPORT_NETBOOT
/* dhcp */
static int
dhcp_func (char *arg, int flags)
{
/* For now, this is an alias for bootp. */
return bootp_func (arg, flags);
}
static struct builtin builtin_dhcp =
{
"dhcp",
dhcp_func,
BUILTIN_CMDLINE | BUILTIN_MENU | BUILTIN_HELP_LIST,
"dhcp",
"Initialize a network device via DHCP."
};
#endif /* SUPPORT_NETBOOT */
static int terminal_func (char *arg, int flags);
#ifdef SUPPORT_GRAPHICS
static int
splashimage_func(char *arg, int flags)
{
char splashimage[64];
//int i;
/* filename can only be 64 characters due to our buffer size */
if (strlen(arg) > 63)
return errnum = ERR_WONT_FIT;
// if (flags == BUILTIN_CMDLINE) {
if (! grub_open(arg))
return 1;
grub_close();
// }
strcpy(splashimage, arg);
/* get rid of TERM_NEED_INIT from the graphics terminal. */
for (i = 0; term_table[i].name; i++) {
if (grub_strcmp (term_table[i].name, "graphics") == 0) {
term_table[i].flags &= ~TERM_NEED_INIT;
break;
}
}
graphics_set_splash (splashimage);
if (/* flags == BUILTIN_CMDLINE && */ graphics_inited) {
graphics_end();
if (! graphics_init())
return errnum = ERR_EXEC_FORMAT;
graphics_cls();
}
/* FIXME: should we be explicitly switching the terminal as a
* side effect here? */
terminal_func("graphics", flags);
return 0;
}
static struct builtin builtin_splashimage =
{
"splashimage",
splashimage_func,
BUILTIN_CMDLINE | BUILTIN_MENU | BUILTIN_HELP_LIST,
"splashimage FILE",
"Load FILE as the background image when in graphics mode."
};
/* foreground */
static int
foreground_func(char *arg, int flags)
{
if (grub_strlen(arg) == 6) {
int r = ((hex(arg[0]) << 4) | hex(arg[1])) >> 2;
int g = ((hex(arg[2]) << 4) | hex(arg[3])) >> 2;
int b = ((hex(arg[4]) << 4) | hex(arg[5])) >> 2;
foreground = (r << 16) | (g << 8) | b;
if (graphics_inited)
graphics_set_palette(15, r, g, b);
return (0);
}
return (1);
}
static struct builtin builtin_foreground =
{
"foreground",
foreground_func,
BUILTIN_CMDLINE | BUILTIN_MENU | BUILTIN_HELP_LIST,
"foreground RRGGBB",
"Sets the foreground color when in graphics mode."
"RR is red, GG is green, and BB blue. Numbers must be in hexadecimal."
};
/* background */
static int
background_func(char *arg, int flags)
{
if (grub_strlen(arg) == 6) {
int r = ((hex(arg[0]) << 4) | hex(arg[1])) >> 2;
int g = ((hex(arg[2]) << 4) | hex(arg[3])) >> 2;
int b = ((hex(arg[4]) << 4) | hex(arg[5])) >> 2;
background = (r << 16) | (g << 8) | b;
if (graphics_inited)
graphics_set_palette(0, r, g, b);
return (0);
}
return (1);
}
static struct builtin builtin_background =
{
"background",
background_func,
BUILTIN_CMDLINE | BUILTIN_MENU | BUILTIN_HELP_LIST,
"background RRGGBB",
"Sets the background color when in graphics mode."
"RR is red, GG is green, and BB blue. Numbers must be in hexadecimal."
};
#endif /* SUPPORT_GRAPHICS */
/* clear */
static int
clear_func()
{
if (current_term->cls)
current_term->cls();
return 0;
}
static struct builtin builtin_clear =
{
"clear",
clear_func,
BUILTIN_MENU | BUILTIN_CMDLINE | BUILTIN_HELP_LIST,
"clear",
"Clear the screen"
};
/* displayapm */
static int
displayapm_func (char *arg, int flags)
{
if (mbi.flags & MB_INFO_APM_TABLE)
{
grub_printf ("APM BIOS information:\n"
" Version: 0x%x\n"
" 32-bit CS: 0x%x\n"
" Offset: 0x%x\n"
" 16-bit CS: 0x%x\n"
" 16-bit DS: 0x%x\n"
" 32-bit CS length: 0x%x\n"
" 16-bit CS length: 0x%x\n"
" 16-bit DS length: 0x%x\n",
(unsigned) apm_bios_info.version,
(unsigned) apm_bios_info.cseg,
apm_bios_info.offset,
(unsigned) apm_bios_info.cseg_16,
(unsigned) apm_bios_info.dseg_16,
(unsigned) apm_bios_info.cseg_len,
(unsigned) apm_bios_info.cseg_16_len,
(unsigned) apm_bios_info.dseg_16_len);
}
else
{
grub_printf ("No APM BIOS found or probe failed\n");
}
return 0;
}
static struct builtin builtin_displayapm =
{
"displayapm",
displayapm_func,
BUILTIN_MENU | BUILTIN_CMDLINE | BUILTIN_HELP_LIST,
"displayapm",
"Display APM BIOS information."
};
/* displaymem */
static int
displaymem_func (char *arg, int flags)
{
if (get_eisamemsize () != -1)
grub_printf (" EISA Memory BIOS Interface is present\n");
if (get_mmap_entry ((void *) SCRATCHADDR, 0) != 0
|| *((int *) SCRATCHADDR) != 0)
grub_printf (" Address Map BIOS Interface is present\n");
grub_printf (" Lower memory: %uK, "
"Upper memory (to first chipset hole): %uK\n",
mbi.mem_lower, mbi.mem_upper);
if (mbi.flags & MB_INFO_MEM_MAP)
{
struct AddrRangeDesc *map = (struct AddrRangeDesc *) mbi.mmap_addr;
unsigned long end_addr = mbi.mmap_addr + mbi.mmap_length;
grub_printf (" [Address Range Descriptor entries "
"immediately follow (values are 64-bit)]\n");
while (end_addr > (unsigned long) map)
{
char *str;
if (map->Type == MB_ARD_MEMORY)
str = "Usable RAM";
else
str = "Reserved";
grub_printf (" %s: Base Address: 0x%x X 4GB + 0x%x,\n"
" Length: 0x%x X 4GB + 0x%x bytes\n",
str,
(unsigned long) (map->BaseAddr >> 32),
(unsigned long) (map->BaseAddr & 0xFFFFFFFF),
(unsigned long) (map->Length >> 32),
(unsigned long) (map->Length & 0xFFFFFFFF));
map = ((struct AddrRangeDesc *) (((int) map) + 4 + map->size));
}
}
return 0;
}
static struct builtin builtin_displaymem =
{
"displaymem",
displaymem_func,
BUILTIN_MENU | BUILTIN_CMDLINE | BUILTIN_HELP_LIST,
"displaymem",
"Display what GRUB thinks the system address space map of the"
" machine is, including all regions of physical RAM installed."
};
/* dump FROM TO */
#ifdef GRUB_UTIL
static int
dump_func (char *arg, int flags)
{
char *from, *to;
FILE *fp;
char c;
from = arg;
to = skip_to (0, arg);
if (! *from || ! *to)
{
errnum = ERR_BAD_ARGUMENT;
return 1;
}
nul_terminate (from);
nul_terminate (to);
if (! grub_open (from))
return 1;
fp = fopen (to, "w");
if (! fp)
{
errnum = ERR_WRITE;
return 1;
}
while (grub_read (&c, 1))
if (fputc (c, fp) == EOF)
{
errnum = ERR_WRITE;
fclose (fp);
return 1;
}
if (fclose (fp) == EOF)
{
errnum = ERR_WRITE;
return 1;
}
grub_close ();
return 0;
}
static struct builtin builtin_dump =
{
"dump",
dump_func,
BUILTIN_MENU | BUILTIN_CMDLINE,
"dump FROM TO",
"Dump the contents of the file FROM to the file TO. FROM must be"
" a GRUB file and TO must be an OS file."
};
#endif /* GRUB_UTIL */
static char embed_info[32];
/* embed */
/* Embed a Stage 1.5 in the first cylinder after MBR or in the
bootloader block in a FFS. */
static int
embed_func (char *arg, int flags)
{
char *stage1_5;
char *device;
char *stage1_5_buffer = (char *) RAW_ADDR (0x100200);
unsigned long len, size;
unsigned long sector;
stage1_5 = arg;
device = skip_to (0, stage1_5);
/* Open a Stage 1.5. */
if (! grub_open (stage1_5))
return 1;
/* Read the whole of the Stage 1.5. */
len = grub_read (stage1_5_buffer, -1);
grub_close ();
if (errnum)
return 1;
size = (len + SECTOR_SIZE - 1) / SECTOR_SIZE;
/* Get the device where the Stage 1.5 will be embedded. */
set_device (device);
if (errnum)
return 1;
if (current_partition == 0xFFFFFF)
{
/* Embed it after the MBR. */
//#if defined(STAGE1_5) || defined(GRUB_UTIL)
//char mbr[SECTOR_SIZE];
#define mbr ((char *) RAW_ADDR (0x100000))
//#endif
#if 0 /* !!!! The obsolete EZ-BIOS no longer supported !!!! */
char ezbios_check[2*SECTOR_SIZE];
#endif
//int i;
/* Open the partition. */
if (! open_partition ())
return 1;
/* No floppy has MBR. */
if (! (current_drive & 0x80))
{
errnum = ERR_DEV_VALUES;
return 1;
}
/* Read the MBR of CURRENT_DRIVE. */
//printf ("current_drive=%X, mbr=%X\n", current_drive, mbr);
if (! rawread (current_drive, PC_MBR_SECTOR, 0, SECTOR_SIZE, mbr))
return 1;
//printf ("current_drive=%X, mbr=%X\n", current_drive, mbr);
/* Sanity check. */
if (! PC_MBR_CHECK_SIG (mbr))
{
errnum = ERR_BAD_PART_TABLE;
return 1;
}
/* Check if the disk can store the Stage 1.5. */
for (i = 0; i < 4; i++)
if (PC_SLICE_TYPE (mbr, i) && PC_SLICE_START (mbr, i) - 1 < size)
{
errnum = ERR_NO_DISK_SPACE;
return 1;
}
#if 0 /* !!!! The obsolete EZ-BIOS no longer supported !!!! */
/* Check for EZ-BIOS signature. It should be in the third
* sector, but due to remapping it can appear in the second, so
* load and check both.
*/
if (! rawread (current_drive, 1, 0, 2 * SECTOR_SIZE, ezbios_check))
return 1;
if (! memcmp (ezbios_check + 3, "AERMH", 5)
|| ! memcmp (ezbios_check + 512 + 3, "AERMH", 5))
{
/* The space after the MBR is used by EZ-BIOS which we must
* not overwrite.
*/
errnum = ERR_NO_DISK_SPACE;
return 1;
}
#endif
sector = 1;
#undef mbr
}
else
{
/* Embed it in the bootloader block in the filesystem. */
unsigned long start_sector;
/* Open the partition. */
if (! open_device ())
return 1;
/* Check if the current slice supports embedding. */
if (fsys_table[fsys_type].embed_func == 0
|| ! fsys_table[fsys_type].embed_func (&start_sector, size))
{
errnum = ERR_DEV_VALUES;
return 1;
}
sector = part_start + start_sector;
}
/* Clear the cache. */
buf_track = -1;
/* Now perform the embedding. */
if (! devwrite (sector - part_start, size, stage1_5_buffer))
return 1;
grub_printf (" %d sectors are embedded.\n", size);
grub_sprintf (embed_info, "%d+%d", sector - part_start, size);
return 0;
}
static struct builtin builtin_embed =
{
"embed",
embed_func,
BUILTIN_MENU | BUILTIN_CMDLINE,
"embed STAGE1_5 DEVICE",
"Embed the Stage 1.5 STAGE1_5 in the sectors after MBR if DEVICE"
" is a drive, or in the \"bootloader\" area if DEVICE is a FFS partition."
" Print the number of sectors which STAGE1_5 occupies if successful."
};
/* errnum */
static int
errnum_func (char *arg, int flags)
{
return errnum;
}
static struct builtin builtin_errnum =
{
"errnum",
errnum_func,
BUILTIN_MENU | BUILTIN_CMDLINE | BUILTIN_HELP_LIST,
"errnum",
"Return the error number."
};
/* errorcheck */
static int
errorcheck_func (char *arg, int flags)
{
/* If ARG is empty, toggle the flag. */
if (! *arg)
errorcheck = ! errorcheck;
else if (grub_memcmp (arg, "on", 2) == 0)
errorcheck = 1;
else if (grub_memcmp (arg, "off", 3) == 0)
errorcheck = 0;
else if (grub_memcmp (arg, "status", 6) == 0)
grub_printf (" Error check is now %s\n", errorcheck ? "on" : "off");
else
errnum = ERR_BAD_ARGUMENT;
return errorcheck;
}
static struct builtin builtin_errorcheck =
{
"errorcheck",
errorcheck_func,
BUILTIN_MENU | BUILTIN_CMDLINE | BUILTIN_HELP_LIST,
"errorcheck [on | off | status]",
"Turn on/off or display the error check mode, or toggle it if no argument."
};
/* fallback */
static int
fallback_func (char *arg, int flags)
{
i = 0;
while (*arg)
{
int entry;
unsigned long j;
if (! safe_parse_maxint (&arg, &entry))
return 1;
/* Remove duplications to prevent infinite looping. */
for (j = 0; j < i; j++)
if (entry == fallback_entries[j])
break;
if (j != i)
continue;
fallback_entries[i++] = entry;
if (i == MAX_FALLBACK_ENTRIES)
break;
arg = skip_to (0, arg);
}
if (i < MAX_FALLBACK_ENTRIES)
fallback_entries[i] = -1;
fallback_entryno = (i == 0) ? -1 : 0;
return 0;
}
static struct builtin builtin_fallback =
{
"fallback",
fallback_func,
BUILTIN_MENU | BUILTIN_CMDLINE | BUILTIN_HELP_LIST,
#if 1
"fallback NUM...",
"Go into unattended boot mode: if the default boot entry has any"
" errors, instead of waiting for the user to do anything, it"
" immediately starts over using the NUM entry (same numbering as the"
" `default' command). This obviously won't help if the machine"
" was rebooted by a kernel that GRUB loaded."
#endif
};
/* commandline */
int
commandline_func (char *arg, int flags)
{
int forever = 0;
char *config_entries = arg;
//config_entries = (char *) mbi.drives_addr + mbi.drives_length;
//if (! safe_parse_maxint (&arg, &forever))
// return 1;
enter_cmdline(config_entries, forever);
return 0;
}
static struct builtin builtin_commandline =
{
"commandline",
commandline_func,
BUILTIN_MENU | BUILTIN_CMDLINE | BUILTIN_HELP_LIST,
#if 1
"commandline",
"Enter command-line prompt mode."
#endif
};
extern int bsd_evil_hack;
extern unsigned long next_partition_drive;
extern unsigned long next_partition_dest;
extern unsigned long *next_partition_partition;
extern unsigned long *next_partition_type;
extern unsigned long *next_partition_start;
extern unsigned long *next_partition_len;
extern unsigned long *next_partition_offset;
extern unsigned long *next_partition_entry;
extern unsigned long *next_partition_ext_offset;
extern char *next_partition_buf;
extern unsigned long dest_partition;
extern unsigned long entry;
extern unsigned long ext_offset;
/* Hide/Unhide CURRENT_PARTITION. */
static int
set_partition_hidden_flag (int hidden)
{
unsigned long part = 0xFFFFFF;
unsigned long start, len, offset;//, ext_offset;
unsigned long type;//, entry;
#ifdef GRUB_UTIL
// char mbr[512];
#endif
/* The drive must be a hard disk. */
if (! (current_drive & 0x80))
{
errnum = ERR_BAD_ARGUMENT;
return 1;
}
/* The partition must be a PC slice. */
if ((current_partition >> 16) == 0xFF
|| (current_partition & 0xFFFF) != 0xFFFF)
{
errnum = ERR_BAD_ARGUMENT;
return 1;
}
/* Look for the partition. */
while (( next_partition_drive = current_drive,
next_partition_dest = 0xFFFFFF,
next_partition_partition = &part,
next_partition_type = &type,
next_partition_start = &start,
next_partition_len = &len,
next_partition_offset = &offset,
next_partition_entry = &entry,
next_partition_ext_offset = &ext_offset,
next_partition_buf = mbr,
next_partition ()))
// while (next_partition (current_drive, 0xFFFFFF, &part, &type,
// &start, &len, &offset, &entry,
// &ext_offset, mbr))
{
if (part == current_partition)
{
/* Found. */
if (hidden)
PC_SLICE_TYPE (mbr, entry) |= PC_SLICE_TYPE_HIDDEN_FLAG;
else
PC_SLICE_TYPE (mbr, entry) &= ~PC_SLICE_TYPE_HIDDEN_FLAG;
/* Write back the MBR to the disk. */
buf_track = -1;
if (! rawwrite (current_drive, offset, mbr))
return 1;
/* Succeed. */
return 0;
}
}
return 1;
}
static int real_root_func (char *arg1, int attempt_mnt);
/* find */
/* Search for the filename ARG in all of partitions and optionally make that
* partition root("--set-root", Thanks to Chris Semler <csemler@mail.com>).
*/
static int
find_func (char *arg, int flags)
{
char *filename;
unsigned long drive;
unsigned long tmp_drive = saved_drive;
unsigned long tmp_partition = saved_partition;
unsigned long got_file = 0;
unsigned long set_root = 0;
unsigned long ignore_floppies = 0;
//char *in_drives = NULL; /* search in drive list */
char root_found[16];
for (;;)
{
if (grub_memcmp (arg, "--set-root", 10) == 0)
{
set_root = 1;
}
else if (grub_memcmp (arg, "--ignore-floppies", 17) == 0)
{
ignore_floppies = 1;
}
else
break;
arg = skip_to (0, arg);
}
filename = arg;
/* Hard disks. Search in hard disks first, since floppies are slow */
#ifdef GRUB_UTIL
#define FIND_DRIVES 8
#else
#define FIND_DRIVES (*((char *)0x475))
#endif
for (drive = 0x80; drive < 0x80 + FIND_DRIVES; drive++)
#undef FIND_DRIVES
{
unsigned long part = 0xFFFFFF;
unsigned long start, len, offset;//, ext_offset;
unsigned long type;//, entry;
#if defined(STAGE1_5) || defined(GRUB_UTIL)
// char mbr[SECTOR_SIZE];
#endif
current_drive = drive;
while (( next_partition_drive = drive,
next_partition_dest = 0xFFFFFF,
next_partition_partition = &part,
next_partition_type = &type,
next_partition_start = &start,
next_partition_len = &len,
next_partition_offset = &offset,
next_partition_entry = &entry,
next_partition_ext_offset = &ext_offset,
next_partition_buf = mbr,
next_partition ()))
// while (next_partition (drive, 0xFFFFFF, &part, &type,
// &start, &len, &offset, &entry,
// &ext_offset, mbr))
{
if (type != PC_SLICE_TYPE_NONE
&& ! IS_PC_SLICE_TYPE_BSD (type)
&& ! IS_PC_SLICE_TYPE_EXTENDED (type))
{
current_partition = part;
if (open_device ())
{
saved_drive = current_drive;
saved_partition = current_partition;
if (grub_open (filename))
{
int bsd_part = (part >> 8) & 0xFF;
int pc_slice = part >> 16;
grub_close ();
if (bsd_part == 0xFF)
grub_sprintf (root_found, "(hd%d,%d)",
drive - 0x80, pc_slice);
else
grub_sprintf (root_found, "(hd%d,%d,%c)",
drive - 0x80, pc_slice, bsd_part + 'a');
grub_printf (" %s\n", root_found);
got_file = 1;
if (set_root)
goto found;
}
}
}
/* We want to ignore any error here. */
errnum = ERR_NONE;
}
/* next_partition always sets ERRNUM in the last call, so clear
it. */
errnum = ERR_NONE;
}
/* CD-ROM. */
if (cdrom_drive != GRUB_INVALID_DRIVE)
{
current_drive = cdrom_drive;
current_partition = 0xFFFFFF;
if (open_device ())
{
saved_drive = current_drive;
saved_partition = current_partition;
if (grub_open (filename))
{
grub_close ();
grub_sprintf (root_found, "(cd)");
grub_printf (" %s\n", root_found);
got_file = 1;
if (set_root)
goto found;
}
}
errnum = ERR_NONE;
}
/* Floppies. */
#ifdef GRUB_UTIL
#define FIND_DRIVES 8
#else
#define FIND_DRIVES (((*(char*)0x410) & 1)?((*(char*)0x410) >> 6) + 1 : 0)
#endif
if (! ignore_floppies)
{
for (drive = 0; drive < 0 + FIND_DRIVES; drive++)
#undef FIND_DRIVES
{
extern int biosdisk_standard (int ah, int drv, int coff, int hoff, int soff, int nsec, int segment);
#if 0
#ifndef GRUB_UTIL
/* Check if the media is present using int13/ah=04h (verify sectors) */
if (flags != BUILTIN_CMDLINE)
{
/* if boot device is not floppy, don't search floppy. */
if ((unsigned char)boot_drive >= 0x80 || install_partition != 0xFFFFFF)
continue;
/* if floppy is not inserted at boot time, ignore it. */
if (floppy_not_inserted[drive])
continue;
}else{
floppy_not_inserted[drive] = 0;
}
if (biosdisk_standard (0x04, drive, 0, 0, 1, 1, SCRATCHSEG))
{
/* floppy not inserted */
if (flags != BUILTIN_CMDLINE)
floppy_not_inserted[drive] = 1;
continue;
}
#endif
#endif
current_drive = drive;
current_partition = 0xFFFFFF;
if (open_device ())
{
saved_drive = current_drive;
saved_partition = current_partition;
if (grub_open (filename))
{
grub_close ();
grub_sprintf (root_found, "(fd%d)", drive);
grub_printf (" %s\n", root_found);
got_file = 1;
if (set_root)
goto found;
}
}
errnum = ERR_NONE;
}
}
found:
saved_drive = tmp_drive;
saved_partition = tmp_partition;
if (got_file)
{
errnum = ERR_NONE;
if (set_root)
return real_root_func (root_found, 1);
return 0;
}
errnum = ERR_FILE_NOT_FOUND;
return 1;
}
static struct builtin builtin_find =
{
"find",
find_func,
BUILTIN_MENU | BUILTIN_CMDLINE | BUILTIN_HELP_LIST,
"find [--set-root] [--ignore-floppies] FILENAME",
"Search for the filename FILENAME in all of partitions and print the list of"
" the devices which contain the file."
" If the option --set-root is used and FILENAME is found on a device, then"
" stop the find immediately and set the device as new root."
" If the option --ignore-floppies is present, the search will bypass all"
" floppies."
};
/* fstest */
static int
fstest_func (char *arg, int flags)
{
if (disk_read_hook)
{
disk_read_hook = NULL;
printf (" Filesystem tracing is now off\n");
}
else
{
disk_read_hook = disk_read_print_func;
printf (" Filesystem tracing is now on\n");
}
return 0;
}
static struct builtin builtin_fstest =
{
"fstest",
fstest_func,
BUILTIN_MENU | BUILTIN_CMDLINE,
"fstest",
"Toggle filesystem test mode."
};
/* geometry */
static int
geometry_func (char *arg, int flags)
{
// struct geometry tmp_geom;
char *msg;
char *device = arg;
#ifdef GRUB_UTIL
char *ptr;
#endif
/* Get the device number. */
set_device (device);
if (errnum)
return 1;
/* Check for the geometry. */
if (get_diskinfo (current_drive, &tmp_geom))
{
errnum = ERR_NO_DISK;
return 1;
}
/* Attempt to read the first sector, because some BIOSes turns out not
to support LBA even though they set the bit 0 in the support
bitmap, only after reading something actually. */
#ifdef GRUB_UTIL
if (current_drive != cdrom_drive)
#else
if (current_drive != cdrom_drive && (current_drive < min_cdrom_id || current_drive >= min_cdrom_id + atapi_dev_count))
#endif /* GRUB_UTIL */
{
if (biosdisk (BIOSDISK_READ, current_drive, &tmp_geom, 0, 1, SCRATCHSEG))
{
errnum = ERR_READ;
return 1;
}
}
#ifdef GRUB_UTIL
ptr = skip_to (0, device);
if (*ptr)
{
char *cylinder, *head, *sector, *total_sector;
int num_cylinder, num_head, num_sector, num_total_sector;
cylinder = ptr;
head = skip_to (0, cylinder);
sector = skip_to (0, head);
total_sector = skip_to (0, sector);
if (! safe_parse_maxint (&cylinder, &num_cylinder)
|| ! safe_parse_maxint (&head, &num_head)
|| ! safe_parse_maxint (&sector, &num_sector))
return 1;
disks[current_drive].cylinders = num_cylinder;
disks[current_drive].heads = num_head;
disks[current_drive].sectors = num_sector;
if (safe_parse_maxint (&total_sector, &num_total_sector))
disks[current_drive].total_sectors = num_total_sector;
else
disks[current_drive].total_sectors
= num_cylinder * num_head * num_sector;
errnum = 0;
tmp_geom = disks[current_drive];
buf_drive = -1;
}
#endif /* GRUB_UTIL */
#ifdef GRUB_UTIL
msg = device_map[current_drive];
#else
if (tmp_geom.flags & BIOSDISK_FLAG_LBA_EXTENSION)
msg = "LBA";
else
msg = "CHS";
#endif
grub_printf ("drive 0x%x(%s): C/H/S=%d/%d/%d, Sector Count/Size=%d/%d\n",
current_drive, msg,
tmp_geom.cylinders, tmp_geom.heads, tmp_geom.sectors,
tmp_geom.total_sectors, tmp_geom.sector_size);
real_open_partition (1);
return 0;
}
static struct builtin builtin_geometry =
{
"geometry",
geometry_func,
BUILTIN_MENU | BUILTIN_CMDLINE | BUILTIN_HELP_LIST,
"geometry DRIVE [CYLINDER HEAD SECTOR [TOTAL_SECTOR]]",
"Print the information for a drive DRIVE. In the grub shell, you can"
" set the geometry of the drive arbitrarily. The number of the cylinders,"
" the one of the heads, the one of the sectors and the one of the total"
" sectors are set to CYLINDER, HEAD, SECTOR and TOTAL_SECTOR,"
" respectively. If you omit TOTAL_SECTOR, then it will be calculated based"
" on the C/H/S values automatically."
};
/* halt */
static int
halt_func (char *arg, int flags)
{
int no_apm;
no_apm = (grub_memcmp (arg, "--no-apm", 8) == 0);
grub_halt (no_apm);
/* Never reach here. */
return 1;
}
static struct builtin builtin_halt =
{
"halt",
halt_func,
BUILTIN_MENU | BUILTIN_CMDLINE | BUILTIN_HELP_LIST,
"halt [--no-apm]",
"Halt your system. If APM is avaiable on it, turn off the power using"
" the APM BIOS, unless you specify the option `--no-apm'."
};
/* help */
#define MAX_SHORT_DOC_LEN 39
#define MAX_LONG_DOC_LEN 72
static int
help_func (char *arg, int flags)
{
int all = 0;
if (grub_memcmp (arg, "--all", sizeof ("--all") - 1) == 0)
{
all = 1;
arg = skip_to (0, arg);
}
if (! *arg)
{
/* Invoked with no argument. Print the list of the short docs. */
struct builtin **builtin;
int left = 1;
for (builtin = builtin_table; *builtin != 0; builtin++)
{
int len;
//int i;
/* If this cannot be used in the command-line interface,
skip this. */
if (! ((*builtin)->flags & BUILTIN_CMDLINE))
continue;
/* If this doesn't need to be listed automatically and "--all"
is not specified, skip this. */
if (! all && ! ((*builtin)->flags & BUILTIN_HELP_LIST))
continue;
len = grub_strlen ((*builtin)->short_doc);
/* If the length of SHORT_DOC is too long, truncate it. */
if (len > MAX_SHORT_DOC_LEN - 1)
len = MAX_SHORT_DOC_LEN - 1;
for (i = 0; i < len; i++)
grub_putchar ((*builtin)->short_doc[i]);
for (; i < MAX_SHORT_DOC_LEN; i++)
grub_putchar (' ');
if (! left)
grub_putchar ('\n');
left = ! left;
}
/* If the last entry was at the left column, no newline was printed
at the end. */
if (! left)
grub_putchar ('\n');
}
else
{
/* Invoked with one or more patterns. */
do
{
struct builtin **builtin;
char *next_arg;
/* Get the next argument. */
next_arg = skip_to (0, arg);
/* Terminate ARG. */
nul_terminate (arg);
for (builtin = builtin_table; *builtin; builtin++)
{
/* Skip this if this is only for the configuration file. */
if (! ((*builtin)->flags & BUILTIN_CMDLINE))
continue;
if (substring (arg, (*builtin)->name, 0) < 1)
{
char *doc = (*builtin)->long_doc;
/* At first, print the name and the short doc. */
grub_printf ("%s: %s\n",
(*builtin)->name, (*builtin)->short_doc);
/* Print the long doc. */
while (*doc)
{
int len = grub_strlen (doc);
//int i;
/* If LEN is too long, fold DOC. */
if (len > MAX_LONG_DOC_LEN)
{
/* Fold this line at the position of a space. */
for (len = MAX_LONG_DOC_LEN; len > 0; len--)
if (doc[len - 1] == ' ')
break;
}
grub_printf (" ");
for (i = 0; i < len; i++)
grub_putchar (*doc++);
grub_putchar ('\n');
}
}
}
arg = next_arg;
}
while (*arg);
}
return 0;
}
static struct builtin builtin_help =
{
"help",
help_func,
BUILTIN_MENU | BUILTIN_CMDLINE | BUILTIN_HELP_LIST,
"help [--all] [PATTERN ...]",
"Display helpful information about builtin commands. Not all commands"
" aren't shown without the option `--all'."
};
/* hiddenmenu */
static int
hiddenmenu_func (char *arg, int flags)
{
show_menu = 0;
return 0;
}
static struct builtin builtin_hiddenmenu =
{
"hiddenmenu",
hiddenmenu_func,
BUILTIN_MENU,
#if 0
"hiddenmenu",
"Hide the menu."
#endif
};
/* hide */
static int
hide_func (char *arg, int flags)
{
/* If no arguments, unhide current partition in the current drive. */
if (! *arg || *arg == ' ' || *arg == '\t')
{
current_drive = saved_drive;
current_partition = saved_partition;
}
else if (! set_device (arg))
return 1;
if (! set_partition_hidden_flag (1))
return 1;
return 0;
}
static struct builtin builtin_hide =
{
"hide",
hide_func,
BUILTIN_CMDLINE | BUILTIN_MENU | BUILTIN_HELP_LIST,
"hide [PARTITION]",
"Hide PARTITION by setting the \"hidden\" bit in"
" its partition type code. The default partition is the current"
" root device."
};
#ifdef SUPPORT_NETBOOT
/* ifconfig */
static int
ifconfig_func (char *arg, int flags)
{
char *svr = 0, *ip = 0, *gw = 0, *sm = 0;
if (! eth_probe ())
{
grub_printf ("No ethernet card found.\n");
errnum = ERR_DEV_VALUES;
return 1;
}
while (*arg)
{
if (! grub_memcmp ("--server=", arg, sizeof ("--server=") - 1))
svr = arg + sizeof("--server=") - 1;
else if (! grub_memcmp ("--address=", arg, sizeof ("--address=") - 1))
ip = arg + sizeof ("--address=") - 1;
else if (! grub_memcmp ("--gateway=", arg, sizeof ("--gateway=") - 1))
gw = arg + sizeof ("--gateway=") - 1;
else if (! grub_memcmp ("--mask=", arg, sizeof("--mask=") - 1))
sm = arg + sizeof ("--mask=") - 1;
else
{
errnum = ERR_BAD_ARGUMENT;
return 1;
}
arg = skip_to (0, arg);
}
if (! ifconfig (ip, sm, gw, svr))
{
errnum = ERR_BAD_ARGUMENT;
return 1;
}
print_network_configuration ();
return 0;
}
static struct builtin builtin_ifconfig =
{
"ifconfig",
ifconfig_func,
BUILTIN_CMDLINE | BUILTIN_MENU | BUILTIN_HELP_LIST,
"ifconfig [--address=IP] [--gateway=IP] [--mask=MASK] [--server=IP]",
"Configure the IP address, the netmask, the gateway and the server"
" address or print current network configuration."
};
#endif /* SUPPORT_NETBOOT */
/* impsprobe */
static int
impsprobe_func (char *arg, int flags)
{
#ifdef GRUB_UTIL
/* In the grub shell, we cannot probe IMPS. */
errnum = ERR_UNRECOGNIZED;
return 1;
#else /* ! GRUB_UTIL */
if (!imps_probe ())
printf (" No MPS information found or probe failed\n");
return 0;
#endif /* ! GRUB_UTIL */
}
static struct builtin builtin_impsprobe =
{
"impsprobe",
impsprobe_func,
BUILTIN_MENU | BUILTIN_CMDLINE,
"impsprobe",
"Probe the Intel Multiprocessor Specification 1.1 or 1.4"
" configuration table and boot the various CPUs which are found into"
" a tight loop."
};
/* initrd */
static int
initrd_func (char *arg, int flags)
{
switch (kernel_type)
{
case KERNEL_TYPE_LINUX:
case KERNEL_TYPE_BIG_LINUX:
if (! load_initrd (arg))
return 1;
break;
default:
errnum = ERR_NEED_LX_KERNEL;
return 1;
}
return 0;
}
static struct builtin builtin_initrd =
{
"initrd",
initrd_func,
BUILTIN_MENU | BUILTIN_CMDLINE | BUILTIN_HELP_LIST,
"initrd FILE [ARG ...]",
"Load an initial ramdisk FILE for a Linux format boot image and set the"
" appropriate parameters in the Linux setup area in memory."
};
//#ifdef GRUB_UTIL
//#define installaddr (*(unsigned long *)RAW_ADDR (0x100000))
//#define installlist (*(unsigned long *)RAW_ADDR (0x100004))
//#define stage2_first_buffer (*(char **)RAW_ADDR (0x100008))
//#else
static unsigned long installaddr, installlist;
static char *stage2_first_buffer;
//#endif
static void disk_read_blocklist_func1 (unsigned long sector, unsigned long offset, unsigned long length);
/* Write SECTOR to INSTALLLIST, and update INSTALLADDR and
INSTALLSECT. */
static void
disk_read_blocklist_func1 (unsigned long sector, unsigned long offset, unsigned long length)
{
if (debug)
printf("[%d]", sector);
if (offset != 0 || blklst_last_length != SECTOR_SIZE)
{
/* We found a non-sector-aligned data block. */
errnum = ERR_UNALIGNED;
return;
}
blklst_last_length = length;
if (*((unsigned long *) (installlist - 4))
+ *((unsigned short *) installlist) != sector
|| installlist == (unsigned long) stage2_first_buffer + SECTOR_SIZE + 4)
{
installlist -= 8;
if (*((unsigned long *) (installlist - 8)))
errnum = ERR_WONT_FIT;
else
{
*((unsigned short *) (installlist + 2)) = (installaddr >> 4);
*((unsigned long *) (installlist - 4)) = sector;
}
}
*((unsigned short *) installlist) += 1;
installaddr += 512;
}
//#ifdef GRUB_UTIL
//#define saved_sector (*(unsigned long *)RAW_ADDR (0x10000C))
//#else
static unsigned long saved_sector;
//#endif
static void disk_read_savesect_func (unsigned long sector, unsigned long offset, unsigned long length);
/* Save the first sector of Stage2 in STAGE2_SECT. */
static void
disk_read_savesect_func (unsigned long sector, unsigned long offset, unsigned long length)
{
if (debug)
printf ("[%d]", sector);
/* ReiserFS has files which sometimes contain data not aligned
on sector boundaries. Returning an error is better than
silently failing. */
if (offset != 0 || length != SECTOR_SIZE)
errnum = ERR_UNALIGNED;
saved_sector = sector;
}
/* install */
static int
install_func (char *arg, int flags)
{
char *stage1_file, *dest_dev, *file, *addr;
char *stage1_buffer = (char *) RAW_ADDR (0x100200);
char *stage2_buffer = stage1_buffer + SECTOR_SIZE;
char *old_sect = stage2_buffer + SECTOR_SIZE;
char *stage2_second_buffer;
/* XXX: Probably SECTOR_SIZE is reasonable. */
char *config_filename;
char *dummy;
unsigned long new_drive = GRUB_INVALID_DRIVE;
unsigned long dest_drive;
//unsigned long dest_partition;
unsigned long dest_sector;
unsigned long src_drive, src_partition, src_part_start;
//unsigned long i;
//struct geometry dest_geom, src_geom;
unsigned long stage2_first_sector, stage2_second_sector;
char *ptr;
/* Point to the location of the name of a configuration file in Stage 2. */
char *config_file_location;
/* If FILE is a Stage 1.5? */
int is_stage1_5 = 0;
/* Must call grub_close? */
int is_open = 0;
/* If LBA is forced? */
int is_force_lba = 0;
/* Was the last sector full? */
blklst_last_length = SECTOR_SIZE;
stage2_first_buffer = old_sect + SECTOR_SIZE;
stage2_second_buffer = stage2_first_buffer + SECTOR_SIZE;
config_filename = stage2_second_buffer + SECTOR_SIZE;
dummy = config_filename + SECTOR_SIZE;
#ifdef GRUB_UTIL
/* If the Stage 2 is in a partition mounted by an OS, this will store
the filename under the OS. */
char *stage2_os_file = 0;
#endif /* GRUB_UTIL */
/* First, check the GNU-style long option. */
while (1)
{
if (grub_memcmp ("--force-lba", arg, sizeof ("--force-lba") - 1) == 0)
{
is_force_lba = 1;
arg = skip_to (0, arg);
}
#ifdef GRUB_UTIL
else if (grub_memcmp ("--stage2=", arg, sizeof ("--stage2=") - 1) == 0)
{
stage2_os_file = arg + sizeof ("--stage2=") - 1;
arg = skip_to (0, arg);
nul_terminate (stage2_os_file);
}
#endif /* GRUB_UTIL */
else
break;
}
stage1_file = arg;
dest_dev = skip_to (0, stage1_file);
if (*dest_dev == 'd')
{
new_drive = 0;
dest_dev = skip_to (0, dest_dev);
}
file = skip_to (0, dest_dev);
addr = skip_to (0, file);
/* Get the installation address. */
if (! safe_parse_maxint (&addr, (int *)(void *)&installaddr))
{
/* ADDR is not specified. */
installaddr = 0;
ptr = addr;
errnum = 0;
}
else
ptr = skip_to (0, addr);
#ifndef NO_DECOMPRESSION
/* Do not decompress Stage 1 or Stage 2. */
no_decompression = 1;
#endif
/* Read Stage 1. */
is_open = grub_open (stage1_file);
if (! is_open
|| ! grub_read (stage1_buffer, SECTOR_SIZE) == SECTOR_SIZE)
goto fail;
/* Read the old sector from DEST_DEV. */
if (! set_device (dest_dev)
|| ! open_partition ()
|| ! devread (0, 0, SECTOR_SIZE, old_sect))
goto fail;
/* Store the information for the destination device. */
dest_drive = current_drive;
dest_partition = current_partition;
//dest_geom = buf_geom;
dest_sector = part_start;
/* Copy the possible DOS BPB, 59 bytes at byte offset 3. */
grub_memmove (stage1_buffer + BOOTSEC_BPB_OFFSET,
old_sect + BOOTSEC_BPB_OFFSET,
BOOTSEC_BPB_LENGTH);
/* If for a hard disk, copy the possible MBR/extended part table. */
if (dest_drive & 0x80)
grub_memmove (stage1_buffer + STAGE1_WINDOWS_NT_MAGIC,
old_sect + STAGE1_WINDOWS_NT_MAGIC,
STAGE1_PARTEND - STAGE1_WINDOWS_NT_MAGIC);
/* Check for the version and the signature of Stage 1. */
if (*((short *)(stage1_buffer + STAGE1_VER_MAJ_OFFS)) != COMPAT_VERSION
|| (*((unsigned short *) (stage1_buffer + BOOTSEC_SIG_OFFSET))
!= BOOTSEC_SIGNATURE))
{
errnum = ERR_BAD_VERSION;
goto fail;
}
/* This below is not true any longer. But should we leave this alone? */
/* If DEST_DRIVE is a floppy, Stage 2 must have the iteration probe
routine. */
if (! (dest_drive & 0x80)
&& (*((unsigned char *) (stage1_buffer + BOOTSEC_PART_OFFSET)) == 0x80
|| stage1_buffer[BOOTSEC_PART_OFFSET] == 0))
{
errnum = ERR_BAD_VERSION;
goto fail;
}
grub_close ();
/* Open Stage 2. */
is_open = grub_open (file);
if (! is_open)
goto fail;
src_drive = current_drive;
src_partition = current_partition;
src_part_start = part_start;
//src_geom = buf_geom;
if (! new_drive)
new_drive = src_drive;
else if (src_drive != dest_drive)
grub_printf ("Warning: the option `d' was not used, but the Stage 1 will"
" be installed on a\ndifferent drive than the drive where"
" the Stage 2 resides.\n");
/* Set the boot drive. */
*((unsigned char *) (stage1_buffer + STAGE1_BOOT_DRIVE)) = new_drive;
/* Set the "force LBA" flag. */
*((unsigned char *) (stage1_buffer + STAGE1_FORCE_LBA)) = is_force_lba;
/* If DEST_DRIVE is a hard disk, enable the workaround, which is
for buggy BIOSes which don't pass boot drive correctly. Instead,
they pass 0x00 or 0x01 even when booted from 0x80. */
if (dest_drive & BIOS_FLAG_FIXED_DISK)
/* Replace the jmp (2 bytes) with double nop's. */
*((unsigned short *) (stage1_buffer + STAGE1_BOOT_DRIVE_CHECK))
= 0x9090;
//printf ("stage2_first_buffer 6 =%X\n", stage2_first_buffer);
/* Read the first sector of Stage 2. */
disk_read_hook = disk_read_savesect_func;
//printf ("stage2_first_buffer 61=%X\n", stage2_first_buffer);
if (grub_read (stage2_first_buffer, SECTOR_SIZE) != SECTOR_SIZE)
goto fail;
//printf ("stage2_first_buffer 62=%X\n", stage2_first_buffer);
stage2_first_sector = saved_sector;
//printf ("stage2_second_buffer 63=%X\n", stage2_second_buffer);
/* Read the second sector of Stage 2. */
if (grub_read (stage2_second_buffer, SECTOR_SIZE) != SECTOR_SIZE)
goto fail;
//printf ("stage2_first_buffer 64=%X\n", stage2_first_buffer);
stage2_second_sector = saved_sector;
//printf ("stage2_first_buffer 65=%X\n", stage2_first_buffer);
/* Check for the version of Stage 2. */
if (*((short *) (stage2_second_buffer + STAGE2_VER_MAJ_OFFS))
!= COMPAT_VERSION)
{
errnum = ERR_BAD_VERSION;
goto fail;
}
//printf ("stage2_first_buffer 7 =%X\n", stage2_first_buffer);
/* Check for the Stage 2 id. */
if (stage2_second_buffer[STAGE2_STAGE2_ID] != STAGE2_ID_STAGE2)
is_stage1_5 = 1;
/* If INSTALLADDR is not specified explicitly in the command-line,
determine it by the Stage 2 id. */
if (! installaddr)
{
if (! is_stage1_5)
/* Stage 2. */
installaddr = 0x8000;
else
/* Stage 1.5. */
installaddr = 0x2000;
}
*((unsigned long *) (stage1_buffer + STAGE1_STAGE2_SECTOR))
= stage2_first_sector;
*((unsigned short *) (stage1_buffer + STAGE1_STAGE2_ADDRESS))
= installaddr;
*((unsigned short *) (stage1_buffer + STAGE1_STAGE2_SEGMENT))
= installaddr >> 4;
//printf ("stage2_first_buffer 8 =%X\n", stage2_first_buffer);
i = (unsigned long) stage2_first_buffer + SECTOR_SIZE - 4;
while (*((unsigned long *) i))
{
if (i < (int) stage2_first_buffer
|| (*((int *) (i - 4)) & 0x80000000)
|| *((unsigned short *) i) >= 0xA00
|| *((short *) (i + 2)) == 0)
{
errnum = ERR_BAD_VERSION;
goto fail;
}
*((int *) i) = 0;
*((int *) (i - 4)) = 0;
i -= 8;
}
installlist = (int) stage2_first_buffer + SECTOR_SIZE + 4;
installaddr += SECTOR_SIZE;
/* Read the whole of Stage2 except for the first sector. */
filepos = SECTOR_SIZE;
disk_read_hook = disk_read_blocklist_func1;
if (! grub_read (dummy, -1))
goto fail;
disk_read_hook = 0;
/* Find a string for the configuration filename. */
config_file_location = stage2_second_buffer + STAGE2_VER_STR_OFFS;
while (*(config_file_location++))
;
/* Set the "force LBA" flag for Stage2. */
*((unsigned char *) (stage2_second_buffer + STAGE2_FORCE_LBA))
= is_force_lba;
if (*ptr == 'p')
{
*((long *) (stage2_second_buffer + STAGE2_INSTALLPART))
= src_partition;
if (is_stage1_5)
{
/* Reset the device information in FILE if it is a Stage 1.5. */
unsigned long device = 0xFFFFFFFF;
grub_memmove (config_file_location, (char *) &device,
sizeof (device));
}
ptr = skip_to (0, ptr);
}
if (*ptr)
{
grub_strcpy (config_filename, ptr);
nul_terminate (config_filename);
if (! is_stage1_5)
/* If it is a Stage 2, just copy PTR to CONFIG_FILE_LOCATION. */
grub_strcpy (config_file_location, ptr);
else
{
char *real_config;
unsigned long device;
/* Translate the external device syntax to the internal device
syntax. */
if (! (real_config = set_device (ptr)))
{
/* The Stage 2 PTR does not contain the device name, so
use the root device instead. */
errnum = ERR_NONE;
current_drive = saved_drive;
current_partition = saved_partition;
real_config = ptr;
}
if (current_drive == src_drive)
{
/* If the drive where the Stage 2 resides is the same as
the one where the Stage 1.5 resides, do not embed the
drive number. */
current_drive = GRUB_INVALID_DRIVE;
}
device = (current_drive << 24) | current_partition;
grub_memmove (config_file_location, (char *) &device,
sizeof (device));
grub_strcpy (config_file_location + sizeof (device),
real_config);
}
/* If a Stage 1.5 is used, then we need to modify the Stage2. */
if (is_stage1_5)
{
char *real_config_filename = skip_to (0, ptr);
is_open = grub_open (config_filename);
if (! is_open)
goto fail;
/* Skip the first sector. */
filepos = SECTOR_SIZE;
disk_read_hook = disk_read_savesect_func;
if (grub_read (stage2_buffer, SECTOR_SIZE) != SECTOR_SIZE)
goto fail;
disk_read_hook = 0;
grub_close ();
is_open = 0;
/* Sanity check. */
if (*(stage2_buffer + STAGE2_STAGE2_ID) != STAGE2_ID_STAGE2)
{
errnum = ERR_BAD_VERSION;
goto fail;
}
/* Set the "force LBA" flag for Stage2. */
*(stage2_buffer + STAGE2_FORCE_LBA) = is_force_lba;
/* If REAL_CONFIG_FILENAME is specified, copy it to the Stage2. */
if (*real_config_filename)
{
/* Specified */
char *location;
/* Find a string for the configuration filename. */
location = stage2_buffer + STAGE2_VER_STR_OFFS;
while (*(location++))
;
/* Copy the name. */
grub_strcpy (location, real_config_filename);
}
/* Write it to the disk. */
buf_track = -1;
#ifdef GRUB_UTIL
/* In the grub shell, access the Stage 2 via the OS filesystem
service, if possible. */
if (stage2_os_file)
{
FILE *fp;
fp = fopen (stage2_os_file, "r+");
if (! fp)
{
errnum = ERR_FILE_NOT_FOUND;
goto fail;
}
if (fseek (fp, SECTOR_SIZE, SEEK_SET) != 0)
{
fclose (fp);
errnum = ERR_BAD_VERSION;
goto fail;
}
if (fwrite (stage2_buffer, 1, SECTOR_SIZE, fp)
!= SECTOR_SIZE)
{
fclose (fp);
errnum = ERR_WRITE;
goto fail;
}
fclose (fp);
}
else
#endif /* GRUB_UTIL */
{
if (! devwrite (saved_sector - part_start, 1, stage2_buffer))
goto fail;
}
}
}
/* Clear the cache. */
buf_track = -1;
/* Write the modified sectors of Stage2 to the disk. */
#ifdef GRUB_UTIL
if (! is_stage1_5 && stage2_os_file)
{
FILE *fp;
fp = fopen (stage2_os_file, "r+");
if (! fp)
{
errnum = ERR_FILE_NOT_FOUND;
goto fail;
}
if (fwrite (stage2_first_buffer, 1, SECTOR_SIZE, fp) != SECTOR_SIZE)
{
fclose (fp);
errnum = ERR_WRITE;
goto fail;
}
if (fwrite (stage2_second_buffer, 1, SECTOR_SIZE, fp) != SECTOR_SIZE)
{
fclose (fp);
errnum = ERR_WRITE;
goto fail;
}
fclose (fp);
}
else
#endif /* GRUB_UTIL */
{
/* The first. */
current_drive = src_drive;
current_partition = src_partition;
if (! open_partition ())
goto fail;
if (! devwrite (stage2_first_sector - src_part_start, 1,
stage2_first_buffer))
goto fail;
if (! devwrite (stage2_second_sector - src_part_start, 1,
stage2_second_buffer))
goto fail;
}
/* Write the modified sector of Stage 1 to the disk. */
current_drive = dest_drive;
current_partition = dest_partition;
if (! open_partition ())
goto fail;
devwrite (0, 1, stage1_buffer);
fail:
if (is_open)
grub_close ();
disk_read_hook = 0;
#ifndef NO_DECOMPRESSION
no_decompression = 0;
#endif
grub_printf ("\n\nNotice: the two commands SETUP and INSTALL will be removed soon! Please use the\nOS utility of BOOTLACE.COM to install GRLDR boot record to the MBR or to the\nboot area of a specified partition.\n\n");
return errnum;
}
static struct builtin builtin_install =
{
"install",
install_func,
BUILTIN_MENU | BUILTIN_CMDLINE,
"install [--stage2=STAGE2_FILE] [--force-lba] STAGE1 [d] DEVICE\n STAGE2 [ADDR] [p] [CONFIG_FILE] [REAL_CONFIG_FILE]",
"Install STAGE1 on DEVICE, and install a blocklist for loading STAGE2"
" as a Stage 2. If the option `d' is present, the Stage 1 will always"
" look for the disk where STAGE2 was installed, rather than using"
" the booting drive. The Stage 2 will be loaded at address ADDR, which"
" will be determined automatically if you don't specify it. If"
" the option `p' or CONFIG_FILE is present, then the first block"
" of Stage 2 is patched with new values of the partition and name"
" of the configuration file used by the true Stage 2 (for a Stage 1.5,"
" this is the name of the true Stage 2) at boot time. If STAGE2 is a Stage"
" 1.5 and REAL_CONFIG_FILE is present, then the Stage 2 CONFIG_FILE is"
" patched with the configuration filename REAL_CONFIG_FILE."
" If the option `--force-lba' is specified, disable some sanity checks"
" for LBA mode. If the option `--stage2' is specified, rewrite the Stage"
" 2 via your OS's filesystem instead of the raw device."
};
/* ioprobe */
static int
ioprobe_func (char *arg, int flags)
{
#ifdef GRUB_UTIL
errnum = ERR_UNRECOGNIZED;
return 1;
#else /* ! GRUB_UTIL */
unsigned short *port;
/* Get the drive number. */
set_device (arg);
if (errnum)
return 1;
/* Clean out IO_MAP. */
grub_memset ((char *) io_map, 0, IO_MAP_SIZE * sizeof (unsigned short));
/* Track the int13 handler. */
track_int13 (current_drive);
/* Print out the result. */
for (port = io_map; *port != 0; port++)
grub_printf (" 0x%x", (unsigned int) *port);
return 0;
#endif /* ! GRUB_UTIL */
}
static struct builtin builtin_ioprobe =
{
"ioprobe",
ioprobe_func,
BUILTIN_MENU | BUILTIN_CMDLINE,
"ioprobe DRIVE",
"Probe I/O ports used for the drive DRIVE."
};
/* is64bit */
static int
is64bit_func (char *arg, int flags)
{
return is64bit;
}
static struct builtin builtin_is64bit =
{
"is64bit",
is64bit_func,
BUILTIN_MENU | BUILTIN_CMDLINE | BUILTIN_HELP_LIST,
"is64bit",
"Return true if CPU is 64-bit and false if not."
};
/* kernel */
static int
kernel_func (char *arg, int flags)
{
int len;
kernel_t suggested_type = KERNEL_TYPE_NONE;
unsigned long load_flags = 0;
#ifndef AUTO_LINUX_MEM_OPT
load_flags |= KERNEL_LOAD_NO_MEM_OPTION;
#endif
/* Deal with GNU-style long options. */
while (1)
{
/* If the option `--type=TYPE' is specified, convert the string to
a kernel type. */
if (grub_memcmp (arg, "--type=", 7) == 0)
{
arg += 7;
if (grub_memcmp (arg, "netbsd", 6) == 0)
suggested_type = KERNEL_TYPE_NETBSD;
else if (grub_memcmp (arg, "freebsd", 7) == 0)
suggested_type = KERNEL_TYPE_FREEBSD;
else if (grub_memcmp (arg, "openbsd", 7) == 0)
/* XXX: For now, OpenBSD is identical to NetBSD, from GRUB's
point of view. */
suggested_type = KERNEL_TYPE_NETBSD;
else if (grub_memcmp (arg, "linux", 5) == 0)
suggested_type = KERNEL_TYPE_LINUX;
else if (grub_memcmp (arg, "biglinux", 8) == 0)
suggested_type = KERNEL_TYPE_BIG_LINUX;
else if (grub_memcmp (arg, "multiboot", 9) == 0)
suggested_type = KERNEL_TYPE_MULTIBOOT;
else
{
errnum = ERR_BAD_ARGUMENT;
return 1;
}
}
/* If the `--no-mem-option' is specified, don't pass a Linux's mem
option automatically. If the kernel is another type, this flag
has no effect. */
else if (grub_memcmp (arg, "--no-mem-option", 15) == 0)
load_flags |= KERNEL_LOAD_NO_MEM_OPTION;
else
break;
/* Try the next. */
arg = skip_to (0, arg);
}
len = grub_strlen (arg) + grub_strlen (kernel_option_video);
/* Reset MB_CMDLINE. */
mb_cmdline = (char *) MB_CMDLINE_BUF;
if (len + 1 > MB_CMDLINE_BUFLEN)
{
errnum = ERR_WONT_FIT;
return 1;
}
///* Copy the command-line to MB_CMDLINE. */
//grub_memmove (mb_cmdline, arg, len + 1);
/* Copy the command-line to MB_CMDLINE and append the kernel_option_video
* which might have been set by `setvbe'.
*/
grub_sprintf (mb_cmdline, "%s%s", arg, kernel_option_video);
kernel_type = load_image (arg, mb_cmdline, suggested_type, load_flags);
if (kernel_type == KERNEL_TYPE_NONE)
return 1;
mb_cmdline += len + 1;
return 0;
}
static struct builtin builtin_kernel =
{
"kernel",
kernel_func,
BUILTIN_MENU | BUILTIN_CMDLINE | BUILTIN_HELP_LIST,
"kernel [--no-mem-option] [--type=TYPE] FILE [ARG ...]",
"Attempt to load the primary boot image from FILE. The rest of the"
" line is passed verbatim as the \"kernel command line\". Any modules"
" must be reloaded after using this command. The option --type is used"
" to suggest what type of kernel to be loaded. TYPE must be either of"
" \"netbsd\", \"freebsd\", \"openbsd\", \"linux\", \"biglinux\" and"
" \"multiboot\". The option --no-mem-option tells GRUB not to pass a"
" Linux's mem option automatically."
};
/* lock */
static int
lock_func (char *arg, int flags)
{
if (! auth && password)
{
errnum = ERR_PRIVILEGED;
return 1;
}
return 0;
}
static struct builtin builtin_lock =
{
"lock",
lock_func,
BUILTIN_MENU | BUILTIN_CMDLINE,
"lock",
"Break a command execution unless the user is authenticated."
};
/* makeactive */
static int
makeactive_func (char *arg, int flags)
{
if (! make_saved_active ())
return 1;
return 0;
}
static struct builtin builtin_makeactive =
{
"makeactive",
makeactive_func,
BUILTIN_MENU | BUILTIN_CMDLINE | BUILTIN_HELP_LIST,
"makeactive",
"Set the active partition on the root disk to GRUB's root device."
" This command is limited to _primary_ PC partitions on a hard disk."
};
#ifndef GRUB_UTIL
static unsigned long start_sector, sector_count;
/* Get the start sector number of the file. */
static void disk_read_start_sector_func (unsigned long sector, unsigned long offset, unsigned long length);
static void
disk_read_start_sector_func (unsigned long sector, unsigned long offset, unsigned long length)
{
if (sector_count < 1)
{
start_sector = sector;
}
sector_count++;
}
static void print_bios_total_drives(void);
static void
print_bios_total_drives(void)
{
grub_printf ("\nfloppies_orig=%d, harddrives_orig=%d, floppies_curr=%d, harddrives_curr=%d\n",
(floppies_orig & 1)?(floppies_orig >> 6) + 1 : 0, harddrives_orig,
((*(char*)0x410) & 1)?((*(char*)0x410) >> 6) + 1 : 0, *(char*)0x475);
}
#endif
unsigned long probed_total_sectors;
unsigned long probed_heads;
unsigned long probed_sectors_per_track;
unsigned long probed_cylinders;
unsigned long sectors_per_cylinder;
int filesystem_type;
/* matrix of coefficients of linear equations
*
* C[n] * (H_count * S_count) + H[n] * S_count = LBA[n] - S[n] + 1
*
* where n = 1, 2, 3, 4, 5, 6, 7, 8
*/
/* This starts at offset 0x130 */
long long L[9]; /* L[n] == LBA[n] - S[n] + 1 */
long H[9];
short C[9];
short X;
short Y;
short Cmax;
long Hmax;
short Smax;
unsigned long Z;
/*
* return:
* 0 success
* otherwise failure
* 1 no "55 AA" at the end
*
*/
int
probe_bpb (struct master_and_dos_boot_sector *BS)
{
/* first, check ext2 grldr boot sector */
probed_total_sectors = BS->total_sectors_long;
/* at 0D: (byte)Sectors per block. Valid values are 2, 4, 8, 16 and 32. */
if (BS->sectors_per_cluster < 2 || 32 % BS->sectors_per_cluster)
goto failed_ext2_grldr;
/* at 0E: (word)Bytes per block.
* Valid values are 0x400, 0x800, 0x1000, 0x2000 and 0x4000.
*/
if (BS->reserved_sectors != BS->sectors_per_cluster * 0x200)
goto failed_ext2_grldr;
i = *(unsigned long *)((char *)BS + 0x2C);
if (BS->reserved_sectors == 0x400 && i != 2)
goto failed_ext2_grldr;
if (BS->reserved_sectors != 0x400 && i != 1)
goto failed_ext2_grldr;
/* at 14: Pointers per block(number of blocks covered by an indirect block).
* Valid values are 0x100, 0x200, 0x400, 0x800, 0x1000.
*/
i = *(unsigned long *)((char *)BS + 0x14);
if (i < 0x100 || 0x1000 % i)
goto failed_ext2_grldr;
/* at 10: Pointers in pointers-per-block blocks, that is, number of
* blocks covered by a double-indirect block.
* Valid values are 0x10000, 0x40000, 0x100000, 0x400000 and 0x1000000.
*/
if (*(unsigned long *)((char *)BS + 0x10) != i * i)
goto failed_ext2_grldr;
if (! BS->sectors_per_track || BS->sectors_per_track > 63)
goto failed_ext2_grldr;
if (BS->total_heads > 256 /* (BS->total_heads - 1) >> 8 */)
goto failed_ext2_grldr;
probed_heads = BS->total_heads;
probed_sectors_per_track = BS->sectors_per_track;
sectors_per_cylinder = probed_heads * probed_sectors_per_track;
probed_cylinders = (probed_total_sectors + sectors_per_cylinder - 1) / sectors_per_cylinder;
filesystem_type = 5;
/* BPB probe success */
return 0;
failed_ext2_grldr:
probed_total_sectors = BS->total_sectors_short ? BS->total_sectors_short : (BS->total_sectors_long ? BS->total_sectors_long : (unsigned long)BS->total_sectors_long_long);
#if 0
if (probed_total_sectors != sector_count && sector_count != 1 && (! (probed_total_sectors & 1) || probed_total_sectors != sector_count - 1))
goto failed_probe_BPB;
#endif
if (BS->bytes_per_sector != 0x200)
return 1;
if (! BS->sectors_per_cluster || 128 % BS->sectors_per_cluster)
return 1;
// if (! BS->reserved_sectors) /* NTFS reserved_sectors is 0 */
// goto failed_probe_BPB;
if (BS->number_of_fats > (unsigned char)2 /* BS->number_of_fats && ((BS->number_of_fats - 1) >> 1) */)
return 1;
if (! BS->sectors_per_track || BS->sectors_per_track > 63)
return 1;
if (BS->total_heads > 256 /* (BS->total_heads - 1) >> 8 */)
return 1;
if (BS->media_descriptor < (unsigned char)0xF0)
return 1;
if (! BS->root_dir_entries && ! BS->total_sectors_short && ! BS->sectors_per_fat) /* FAT32 or NTFS */
if (BS->number_of_fats && BS->total_sectors_long && BS->sectors_per_fat32)
{
filesystem_type = 3;
}
else if (! BS->number_of_fats && ! BS->total_sectors_long && ! BS->reserved_sectors && BS->total_sectors_long_long)
{
filesystem_type = 4;
} else
return 1; /* unknown NTFS-style BPB */
else if (BS->number_of_fats && BS->sectors_per_fat) /* FAT12 or FAT16 */
if ((probed_total_sectors - BS->reserved_sectors - BS->number_of_fats * BS->sectors_per_fat - (BS->root_dir_entries * 32 + BS->bytes_per_sector - 1) / BS->bytes_per_sector) / BS->sectors_per_cluster < 0x0ff8 )
{
filesystem_type = 1;
} else {
filesystem_type = 2;
}
else
return 1; /* unknown BPB */
probed_heads = BS->total_heads;
probed_sectors_per_track = BS->sectors_per_track;
sectors_per_cylinder = probed_heads * probed_sectors_per_track;
probed_cylinders = (probed_total_sectors + sectors_per_cylinder - 1) / sectors_per_cylinder;
/* BPB probe success */
return 0;
}
/* on call:
* BS points to the bootsector
* start_sector1 is the start_sector of the bootimage in the real disk, if unsure, set it to 0
* sector_count1 is the sector_count of the bootimage in the real disk, if unsure, set it to 1
* part_start1 is the part_start of the partition in which the bootimage resides, if unsure, set it to 0
*
* on return:
* 0 success
* otherwise failure
*
*/
int
probe_mbr (struct master_and_dos_boot_sector *BS, unsigned long start_sector1, unsigned long sector_count1, unsigned long part_start1)
{
unsigned long j;
/* probe the partition table */
Cmax = 0; Hmax = 0; Smax = 0;
for (i = 0; i < 4; i++)
{
/* the boot indicator must be 0x80 (for bootable) or 0 (for non-bootable) */
if ((unsigned char)(BS->P[i].boot_indicator << 1))/* if neither 0x80 nor 0 */
return 1;
/* check if the entry is empty, i.e., all the 16 bytes are 0 */
if (*(long long *)(void *)&(BS->P[i].boot_indicator) || *(long long *)(void *)&(BS->P[i].start_lba))
{
/* valid partitions never start at 0, because this is where the MBR
* lives; and more, the number of total sectors should be non-zero.
*/
if (! BS->P[i].start_lba || ! BS->P[i].total_sectors)
return 2;
/* the partitions should not overlap each other */
for (j = 0; j < i; j++)
{
if ((BS->P[j].start_lba <= BS->P[i].start_lba) && (BS->P[j].start_lba + BS->P[j].total_sectors >= BS->P[i].start_lba + BS->P[i].total_sectors))
continue;
if ((BS->P[j].start_lba >= BS->P[i].start_lba) && (BS->P[j].start_lba + BS->P[j].total_sectors <= BS->P[i].start_lba + BS->P[i].total_sectors))
continue;
if ((BS->P[j].start_lba < BS->P[i].start_lba) ?
(BS->P[i].start_lba - BS->P[j].start_lba < BS->P[j].total_sectors) :
(BS->P[j].start_lba - BS->P[i].start_lba < BS->P[i].total_sectors))
return 3;
}
/* the cylinder number */
C[i] = (BS->P[i].start_sector_cylinder >> 8) | ((BS->P[i].start_sector_cylinder & 0xc0) << 2);
if (Cmax < C[i])
Cmax = C[i];
H[i] = BS->P[i].start_head;
if (Hmax < H[i])
Hmax = H[i];
X = BS->P[i].start_sector_cylinder & 0x3f;/* the sector number */
if (Smax < X)
Smax = X;
/* the sector number should not be 0. */
/* partitions should not start at the first track, the MBR-track */
if (! X || BS->P[i].start_lba < Smax/* X - 1 */)
return 4;
L[i] = BS->P[i].start_lba - X + 1;
if (start_sector1 == part_start1)/* extended partition is pretending to be a whole drive */
L[i] +=(unsigned long) part_start1;
C[i+4] = (BS->P[i].end_sector_cylinder >> 8) | ((BS->P[i].end_sector_cylinder & 0xc0) << 2);
if (Cmax < C[i+4])
Cmax = C[i+4];
H[i+4] = BS->P[i].end_head;
if (Hmax < H[i+4])
Hmax = H[i+4];
Y = BS->P[i].end_sector_cylinder & 0x3f;
if (Smax < Y)
Smax = Y;
if (! Y)
return 5;
L[i+4] = BS->P[i].start_lba + BS->P[i].total_sectors;
if (L[i+4] < Y)
return 6;
L[i+4] -= Y;
if (start_sector1 == part_start1)/* extended partition is pretending to be a whole drive */
L[i+4] +=(unsigned long) part_start1;
/* C[n] * (H_count * S_count) + H[n] * S_count = LBA[n] - S[n] + 1 = L[n] */
/* C[n] * (H * S) + H[n] * S = L[n] */
/* Check the large disk partition -- Win98 */
if (Y == 63 && H[i+4] == Hmax && C[i+4] == Cmax
&& (Hmax >= 254 || Cmax >= 1022)
/* && C[i+4] == 1023 */
&& (Cmax + 1) * (Hmax + 1) * 63 < L[i+4] + Y
/* && C[i] * (Hmax + 1) * 63 + H[i] * 63 + X - 1 == BS->P[i].start_lba */
)
{
//grub_printf ("LargeDiskWin98_001 i=%d, C[i]=%d, Hmax=%d, H[i]=%d, L[i]=%d\n", i, C[i], Hmax, H[i], L[i]);
if (C[i] * (Hmax+1) * 63 + H[i] * 63 > L[i])
return 7;
//grub_printf ("LargeDiskWin98_002 i=%d\n", i);
if (C[i] * (Hmax+1) * 63 + H[i] * 63 < L[i])
{
/* calculate CHS numbers from start LBA */
if (X != ((unsigned long)L[i] % 63)+1 && X != 63)
return 8;
if (H[i]!=((unsigned long)L[i]/63)%(Hmax+1) && H[i]!=Hmax)
return 9;
if (C[i] != (((unsigned long)L[i]/63/(Hmax+1)) & 0x3ff) && C[i] != Cmax)
return 10;
}
//grub_printf ("LargeDiskWin98_003 i=%d\n", i);
C[i] = 0;
H[i] = 1;
L[i] = 63;
C[i+4] = 1;
H[i+4] = 0;
L[i+4] = (Hmax + 1) * 63;
}
/* C[n] * (H * S) + H[n] * S = L[n] */
/* Check the large disk partition -- Win2K */
else{
//grub_printf ("LargeDiskWin2K_000 i=%d, Y=%d, H[i+4]=%d, Hmax=%d, C[i+4]=%d, L[i+4]=%d, %d, %d, %d\n", i, Y, H[i+4], Hmax, C[i+4], (int)(L[i+4]), (C[i+4] + 1) * (Hmax + 1) * 63 < L[i+4] + Y, (((unsigned long)L[i+4] + Y) % ((Hmax + 1) * 63)), ((((unsigned long)L[i+4] + Y) / ((Hmax + 1) * 63) - 1) & 0x3ff) == C[i+4]);
if (Y == 63 && H[i+4] == Hmax /* && C[i+4] == Cmax */
// && (Hmax >= 254 /* || Cmax >= 1022 */)
/* && C[i+4] == 1023 */
&& (C[i+4] + 1) * (Hmax + 1) * 63 < L[i+4] + Y
/* && C[i] * (Hmax + 1) * 63 + H[i] * 63 + X - 1 == BS->P[i].start_lba */
&& ! (((unsigned long)L[i+4] + Y) % ((Hmax + 1) * 63))
&& ((((unsigned long)L[i+4] + Y) / ((Hmax + 1) * 63) - 1) & 0x3ff) == C[i+4]
)
{
//grub_printf ("LargeDiskWin2K_001 i=%d\n", i);
if (C[i] * (Hmax+1) * 63 + H[i] * 63 > L[i])
return 11;
//grub_printf ("LargeDiskWin2K_002 i=%d\n", i);
if (C[i] * (Hmax+1) * 63 + H[i] * 63 < L[i])
{
if (((unsigned long)L[i] - H[i] * 63) % ((Hmax+1) * 63))
return 12;
//grub_printf ("LargeDiskWin2K_003 i=%d\n", i);
if (((((unsigned long)L[i] - H[i] * 63) / ((Hmax+1) * 63)) & 0x3ff) != C[i])
return 13;
}
//grub_printf ("LargeDiskWin2K_004 i=%d\n", i);
C[i] = 0;
H[i] = 1;
L[i] = 63;
C[i+4] = 1;
H[i+4] = 0;
L[i+4] = (Hmax + 1) * 63;
}}
}
else
{
/* empty entry, zero all the coefficients */
C[i] = 0;
H[i] = 0;
L[i] = 0;
C[i+4] = 0;
H[i+4] = 0;
L[i+4] = 0;
}
}
// for (i = 0; i < 4; i++)
// {
//grub_printf ("%d \t%d \t%d\n%d \t%d \t%d\n", C[i], H[i],(int)(L[i]), C[i+4], H[i+4],(int)(L[i+4]));
// }
for (i = 0; i < 8; i++)
{
if (C[i])
break;
}
if (i == 8) /* all C[i] == 0 */
{
for (i = 0; i < 8; i++)
{
if (H[i])
break;
}
if (i == 8) /* all H[i] == 0 */
return 14;
for (j = 0; j < i; j++)
if (L[j])
return 15;
if (! L[i])
return 16;
//if (*(long *)((char *)&(L[i]) + 4))
if (L[i] > 0x7fffffff)
return 17;
if ((long)L[i] % H[i])
return 18;
probed_sectors_per_track = (long)L[i] / H[i];
if (probed_sectors_per_track > 63 || probed_sectors_per_track < Smax)
return 19;
Smax = probed_sectors_per_track;
for (j = i + 1; j < 8; j++)
{
if (H[j])
{
if (probed_sectors_per_track * H[j] != L[j])
return 20;
}
else if (L[j])
return 21;
}
probed_heads = Hmax + 1;
#if 0
if (sector_count1 == 1)
probed_cylinders = 1;
else
#endif
{
L[8] = sector_count1; /* just set to a number big enough */
Z = sector_count1 / probed_sectors_per_track;
for (j = probed_heads; j <= 256; j++)
{
H[8] = Z % j;/* the remainder */
if (L[8] > H[8])
{
L[8] = H[8];/* the least residue */
probed_heads = j;/* we got the optimum value */
}
}
probed_cylinders = Z / probed_heads;
if (! probed_cylinders)
probed_cylinders = 1;
}
sectors_per_cylinder = probed_heads * probed_sectors_per_track;
probed_total_sectors = sectors_per_cylinder * probed_cylinders;
}
else
{
if (i > 0)
{
C[8] = C[i]; H[8] = H[i]; L[8] = L[i];
C[i] = C[0]; H[i] = H[0]; L[i] = L[0];
C[0] = C[8]; H[0] = H[8]; L[0] = L[8];
}
H[8] = 0; /* will store sectors per track */
for (i = 1; i < 8; i++)
{
H[i] = C[0] * H[i] - C[i] * H[0];
L[i] = C[0] * L[i] - C[i] * L[0];
if (H[i])
{
if (H[i] < 0)
{
H[i] = - H[i];/* H[i] < 0x080000 */
L[i] = - L[i];
}
/* Note: the max value of H[i] is 1024 * 256 * 2 = 0x00080000,
* so L[i] should be less than 0x00080000 * 64 = 0x02000000 */
if (L[i] <= 0 || L[i] > 0x7fffffff)
return 22;
L[8] = ((long)L[i]) / H[i]; /* sectors per track */
if (L[8] * H[i] != L[i])
return 23;
if (L[8] > 63 || L[8] < Smax)
return 24;
Smax = L[8];
if (H[8])
{
/* H[8] is the old L[8] */
if (L[8] != H[8])
return 25;
}
else /* H[8] is empty, so store L[8] for the first time */
H[8] = L[8];
}
else if (L[i])
return 26;
}
if (H[8])
{
/* H[8] is sectors per track */
L[0] -= H[0] * H[8];
/* Note: the max value of H[8] is 63, the max value of C[0] is 1023,
* so L[0] should be less than 64 * 1024 * 256 = 0x01000000 */
if (L[0] <= 0 || L[0] > 0x7fffffff)
return 27;
/* L[8] is number of heads */
L[8] = ((long)L[0]) / H[8] / C[0];
if (L[8] * H[8] * C[0] != L[0])
return 28;
if (L[8] > 256 || L[8] <= Hmax)
return 29;
probed_sectors_per_track = H[8];
}
else /* fail to set L[8], this means all H[i]==0, i=1,2,3,4,5,6,7 */
{
/* Now the only equation is: C[0] * H * S + H[0] * S = L[0] */
for (i = 63; i >= Smax; i--)
{
L[8] = L[0] - H[0] * i;
if (L[8] <= 0 || L[8] > 0x7fffffff)
continue;
Z = L[8];
if (Z % (C[0] * i))
continue;
L[8] = Z / (C[0] * i);
if (L[8] <= 256 && L[8] > Hmax)
break;/* we have got the PROBED_HEADS */
}
if (i < Smax)
return 30;
probed_sectors_per_track = i;
}
probed_heads = L[8];
sectors_per_cylinder = probed_heads * probed_sectors_per_track;
probed_cylinders = (sector_count1 + sectors_per_cylinder - 1) / sectors_per_cylinder;
if (probed_cylinders < Cmax + 1)
probed_cylinders = Cmax + 1;
probed_total_sectors = sectors_per_cylinder * probed_cylinders;
}
filesystem_type = 0; /* MBR device */
/* partition table probe success */
return 0;
}
//#include "fat.h"
#ifndef GRUB_UTIL
/* map */
/* Map FROM_DRIVE to TO_DRIVE. */
static int
map_func (char *arg, int flags)
{
char *to_drive;
char *from_drive;
unsigned long to, from;
int j;
char *filename;
char *p;
unsigned long extended_part_start;
unsigned long extended_part_length;
int err;
//struct master_and_dos_boot_sector *BS = (struct master_and_dos_boot_sector *) RAW_ADDR (0x8000);
#define BS ((struct master_and_dos_boot_sector *)mbr)
int mem = -1;
int read_Only = 0;
int fake_write = 0;
int unsafe_boot = 0;
int disable_lba_mode = 0;
int disable_chs_mode = 0;
int sectors_per_track = -1;
int heads_per_cylinder = -1;
unsigned long BPB_H = 0;
unsigned long BPB_S = 0;
int in_situ = 0;
filesystem_type = -1;
start_sector = sector_count = 0;
for (;;)
{
if (grub_memcmp (arg, "--status", 8) == 0)
{
#ifndef GRUB_UTIL
print_bios_total_drives();
printf ("\nNumber of ATAPI CD-ROMs: %d\n", atapi_dev_count);
#endif
// grub_printf ("\nsizeof(struct fat_bpb)=0x%x\n", sizeof(struct fat_bpb));
// grub_printf ("\nsizeof(struct master_and_dos_boot_sector)=0x%x\n", sizeof(struct master_and_dos_boot_sector));
if (rd_base != 0xffffffff)
grub_printf ("\nram_drive=0x%X, rd_base=0x%X, rd_size=0x%X\n", ram_drive, rd_base, rd_size);
if (unset_int13_handler (1) && drive_map_slot_empty (bios_drive_map[0]))
{
grub_printf ("\nThe int13 hook is off. The drive map table is currently empty.\n");
return 0;
}
/* From To MaxHead MaxSector StartLBA Sector_count Hook */
grub_printf ("\nFr To Hm Sm StartLBA #Sectors Hk\n"
"-- -- -- -- -------- -------- --\n");
if (! unset_int13_handler (1))
for (i = 0; i < DRIVE_MAP_SIZE; i++)
{
if (drive_map_slot_empty (hooked_drive_map[i]))
break;
for (j = 0; j < DRIVE_MAP_SIZE; j++)
{
if (drive_map_slot_equal(bios_drive_map[j], hooked_drive_map[i]))
break;
}
grub_printf ("%X%X %X%X %X%X %X%X %X%X%X%X%X%X%X%X %X%X%X%X%X%X%X%X 1%d\n", hooked_drive_map[i].from_drive>>4, hooked_drive_map[i].from_drive & 0x0f, hooked_drive_map[i].to_drive>>4, hooked_drive_map[i].to_drive & 0x0f, hooked_drive_map[i].max_head>>4, hooked_drive_map[i].max_head & 0x0f, hooked_drive_map[i].max_sector>>4, hooked_drive_map[i].max_sector & 0x0f, hooked_drive_map[i].start_sector>>28, (hooked_drive_map[i].start_sector>>24) & 0x0f, (hooked_drive_map[i].start_sector>>20) & 0x0f, (hooked_drive_map[i].start_sector>>16) & 0x0f, (hooked_drive_map[i].start_sector>>12) & 0x0f, (hooked_drive_map[i].start_sector>>8) & 0x0f, (hooked_drive_map[i].start_sector>>4) & 0x0f, hooked_drive_map[i].start_sector & 0x0f, hooked_drive_map[i].sector_count>>28, (hooked_drive_map[i].sector_count>>24) & 0x0f, (hooked_drive_map[i].sector_count>>20) & 0x0f, (hooked_drive_map[i].sector_count>>16) & 0x0f, (hooked_drive_map[i].sector_count>>12) & 0x0f, (hooked_drive_map[i].sector_count>>8) & 0x0f, (hooked_drive_map[i].sector_count>>4) & 0x0f, hooked_drive_map[i].sector_count & 0x0f, (j < DRIVE_MAP_SIZE));
}
for (i = 0; i < DRIVE_MAP_SIZE; i++)
{
if (drive_map_slot_empty (bios_drive_map[i]))
break;
if (! unset_int13_handler (1))
{
for (j = 0; j < DRIVE_MAP_SIZE; j++)
{
if (drive_map_slot_equal(hooked_drive_map[j], bios_drive_map[i]))
break;
}
if (j < DRIVE_MAP_SIZE)
continue;
}
grub_printf ("%X%X %X%X %X%X %X%X %X%X%X%X%X%X%X%X %X%X%X%X%X%X%X%X 01\n", bios_drive_map[i].from_drive>>4, bios_drive_map[i].from_drive & 0x0f, bios_drive_map[i].to_drive>>4, bios_drive_map[i].to_drive & 0x0f, bios_drive_map[i].max_head>>4, bios_drive_map[i].max_head & 0x0f, bios_drive_map[i].max_sector>>4, bios_drive_map[i].max_sector & 0x0f, bios_drive_map[i].start_sector>>28, (bios_drive_map[i].start_sector>>24) & 0x0f, (bios_drive_map[i].start_sector>>20) & 0x0f, (bios_drive_map[i].start_sector>>16) & 0x0f, (bios_drive_map[i].start_sector>>12) & 0x0f, (bios_drive_map[i].start_sector>>8) & 0x0f, (bios_drive_map[i].start_sector>>4) & 0x0f, bios_drive_map[i].start_sector & 0x0f, bios_drive_map[i].sector_count>>28, (bios_drive_map[i].sector_count>>24) & 0x0f, (bios_drive_map[i].sector_count>>20) & 0x0f, (bios_drive_map[i].sector_count>>16) & 0x0f, (bios_drive_map[i].sector_count>>12) & 0x0f, (bios_drive_map[i].sector_count>>8) & 0x0f, (bios_drive_map[i].sector_count>>4) & 0x0f, bios_drive_map[i].sector_count & 0x0f);
}
return 0;
}
else if (grub_memcmp (arg, "--hook", 6) == 0)
{
unset_int13_handler (0);
//if (! unset_int13_handler (1))
// return errnum = ERR_INT13_ON_HOOK;
if (drive_map_slot_empty (bios_drive_map[0]))
if (atapi_dev_count == 0)
return errnum = ERR_NO_DRIVE_MAPPED;
set_int13_handler (bios_drive_map);
buf_drive = -1;
buf_track = -1;
return 0;
}
else if (grub_memcmp (arg, "--unhook", 8) == 0)
{
//if (unset_int13_handler (1))
// return errnum = ERR_INT13_OFF_HOOK;
unset_int13_handler (0);
// int13_on_hook = 0;
buf_drive = -1;
buf_track = -1;
return 0;
}
else if (grub_memcmp (arg, "--rehook", 8) == 0)
{
//if (unset_int13_handler (1))
// return errnum = ERR_INT13_OFF_HOOK;
unset_int13_handler (0);
// int13_on_hook = 0;
if (drive_map_slot_empty (bios_drive_map[0]))
if (atapi_dev_count == 0)
return errnum = ERR_NO_DRIVE_MAPPED;
set_int13_handler (bios_drive_map);
buf_drive = -1;
buf_track = -1;
return 0;
}
else if (grub_memcmp (arg, "--floppies=", 11) == 0)
{
int floppies;
p = arg + 11;
if (! safe_parse_maxint (&p, &floppies))
return 1;
if (floppies < 0 || floppies > 2)
return errnum = ERR_INVALID_FLOPPIES;
#ifndef GRUB_UTIL
*((char *)0x410) &= 0x3e;
if (floppies)
*((char *)0x410) |= (floppies == 1) ? 1 : 0x41;
#endif
return 0;
}
else if (grub_memcmp (arg, "--harddrives=", 13) == 0)
{
int harddrives;
p = arg + 13;
if (! safe_parse_maxint (&p, &harddrives))
return 1;
if (harddrives < 0 || harddrives > 127)
return errnum = ERR_INVALID_HARDDRIVES;
#ifndef GRUB_UTIL
*((char *)0x475) = harddrives;
#endif
return 0;
}
else if (grub_memcmp (arg, "--ram-drive=", 12) == 0)
{
int tmp;
p = arg + 12;
if (! safe_parse_maxint (&p, &tmp))
return 1;
if (tmp < 0 || tmp > 254)
return errnum = ERR_INVALID_RAM_DRIVE;
ram_drive = tmp;
return 0;
}
else if (grub_memcmp (arg, "--rd-base=", 10) == 0)
{
int tmp;
p = arg + 10;
if (! safe_parse_maxint (&p, &tmp))
return 1;
// if (tmp == 0xffffffff)
// return errnum = ERR_INVALID_RD_BASE;
rd_base = tmp;
return 0;
}
else if (grub_memcmp (arg, "--rd-size=", 10) == 0)
{
int tmp;
p = arg + 10;
if (! safe_parse_maxint (&p, &tmp))
return 1;
// if (tmp == 0)
// return errnum = ERR_INVALID_RD_SIZE;
rd_size = tmp;
return 0;
}
else if (grub_memcmp (arg, "--memdisk-raw=", 14) == 0)
{
p = arg + 14;
if (! safe_parse_maxint (&p, (int *)(void *)&memdisk_raw))
return 1;
return 0;
}
else if (grub_memcmp (arg, "--safe-mbr-hook=", 16) == 0)
{
p = arg + 16;
if (! safe_parse_maxint (&p, (int *)(void *)&safe_mbr_hook))
return 1;
return 0;
}
else if (grub_memcmp (arg, "--int13-scheme=", 15) == 0)
{
p = arg + 15;
if (! safe_parse_maxint (&p, (int *)(void *)&int13_scheme))
return 1;
return 0;
}
else if (grub_memcmp (arg, "--mem=", 6) == 0)
{
p = arg + 6;
if (! safe_parse_maxint (&p, &mem))
return 1;
if (mem == -1)
mem = -2;//return errnum = ERR_INVALID_MEM_RESERV;
}
else if (grub_memcmp (arg, "--mem", 5) == 0)
{
mem = 0;
}
else if (grub_memcmp (arg, "--read-only", 11) == 0)
{
read_Only = 1;
}
else if (grub_memcmp (arg, "--fake-write", 12) == 0)
{
fake_write = 1;
}
else if (grub_memcmp (arg, "--unsafe-boot", 13) == 0)
{
unsafe_boot = 1;
}
else if (grub_memcmp (arg, "--disable-chs-mode", 18) == 0)
{
disable_chs_mode = 1;
}
else if (grub_memcmp (arg, "--disable-lba-mode", 18) == 0)
{
disable_lba_mode = 1;
}
else if (grub_memcmp (arg, "--in-place", 10) == 0)
{
in_situ = 2;
}
else if (grub_memcmp (arg, "--in-situ", 9) == 0)
{
in_situ = 1;
}
else if (grub_memcmp (arg, "--heads=", 8) == 0)
{
p = arg + 8;
if (! safe_parse_maxint (&p, &heads_per_cylinder))
return 1;
if (heads_per_cylinder < 0 || heads_per_cylinder > 256)
return errnum = ERR_INVALID_HEADS;
}
else if (grub_memcmp (arg, "--heads-per-cylinder=", 21) == 0)
{
grub_printf ("\nThe option --heads-per-cylinder is now deprecated.\n\n"
"Next time, please use --heads instead. Compatibility will be removed soon.\n\n");
p = arg + 21;
if (! safe_parse_maxint (&p, &heads_per_cylinder))
return 1;
if (heads_per_cylinder < 0 || heads_per_cylinder > 256)
return errnum = ERR_INVALID_HEADS;
}
else if (grub_memcmp (arg, "--sectors-per-track=", 20) == 0)
{
p = arg + 20;
if (! safe_parse_maxint (&p, &sectors_per_track))
return 1;
if (sectors_per_track < 0 || sectors_per_track > 63)
return errnum = ERR_INVALID_SECTORS;
}
else
break;
arg = skip_to (0, arg);
}
to_drive = arg;
from_drive = skip_to (0, arg);
/* Get the drive number for FROM_DRIVE. */
set_device (from_drive);
if (errnum)
return 1;
from = current_drive;
if (! (from & 0x80) && in_situ)
return errnum = ERR_IN_SITU_FLOPPY;
/* Get the drive number for TO_DRIVE. */
filename = set_device (to_drive);
//grub_printf ("x: to=0x%x, current_drive=0x%x, current_partition=0x%x, saved_drive=0x%x, saved_partition=0x%x, errnum=%d\n", to, current_drive, current_partition, saved_drive, saved_partition, errnum);
if (errnum) {
/* No device specified. Default to the root device. */
current_drive = saved_drive;
//current_partition = saved_partition;
filename = 0;
errnum = 0;
}
to = current_drive;
if (! (to & 0x80) && in_situ)
return errnum = ERR_IN_SITU_FLOPPY;
/* if mem device is used, assume the --mem option */
if (to == 0xff || to == ram_drive)
{
if (mem == -1)
mem = 0;
}
if (mem != -1 && in_situ)
return errnum = ERR_IN_SITU_MEM;
//grub_printf ("0: part_start=%d, part_length=%d\n", part_start, part_length);
if (in_situ == 1)
{
unsigned long current_partition_bak;
char *filename_bak;
char buf[16];
current_partition_bak = current_partition;
filename_bak = filename;
/* read the first sector of drive TO */
grub_sprintf (/*(char *)SCRATCHADDR*/buf, "(%d)+1", to);
if (! grub_open (/*(char *)SCRATCHADDR*/buf))
return 1;
if (grub_read ((char *)SCRATCHADDR, SECTOR_SIZE) != SECTOR_SIZE)
{
grub_close ();
/* This happens, if the file size is less than 512 bytes. */
if (errnum == ERR_NONE)
errnum = ERR_EXEC_FORMAT;
return 1;
}
grub_close ();
current_partition = current_partition_bak;
filename = filename_bak;
/* try to find an empty entry in the partition table */
for (i = 0; i < 4; i++)
{
if (! *(((char *)SCRATCHADDR) + 0x1C2 + i * 16))
break; /* consider partition type 00 as empty */
if (! *(((char *)SCRATCHADDR) + 0x1C0 + i * 16) & 63)
break; /* invalid start sector number of 0 */
if (! *(((char *)SCRATCHADDR) + 0x1C4 + i * 16) & 63)
break; /* invalid end sector number of 0 */
if (! *(unsigned long *)(((char *)SCRATCHADDR) + 0x1C6 + i * 16))
break; /* invalid start LBA of 0 */
if (! *(unsigned long *)(((char *)SCRATCHADDR) + 0x1CA + i * 16))
break; /* invalid sector count of 0 */
}
if (i >= 4) /* No empty entry. The partition table is full. */
return errnum = ERR_PARTITION_TABLE_FULL;
}
if (current_partition == 0xFFFFFF && filename && (*filename == 0x20 || *filename == 0x09))
{
if (to == 0xff /* || to == ram_drive */)
{
if (mem <= 0)
{
//grub_printf ("When mapping whole mem device at a fixed location, you must specify --mem to a value > 0.\n");
return errnum = ERR_MD_BASE;
}
start_sector = ((unsigned long)mem);
sector_count = 1;
//goto map_whole_drive;
}else if (to == ram_drive)
{
#if 0
if (mem > 0)
{
grub_printf ("ram drive should not map at a fixed location, you must specify --mem to a value <= 0.\n");
return 1;
}
#else
/* always consider this to be a fixed memory mapping */
if ((rd_base & 0x1ff) || ! rd_base)
return errnum = ERR_RD_BASE;
to = 0xff;
mem = (rd_base >> SECTOR_BITS);
start_sector = ((unsigned long)mem);
sector_count = 1;
#endif
////start_sector = ((unsigned long)rd_base >> SECTOR_BITS);
//start_sector = 0;
//sector_count = 1;//((unsigned long)rd_size >> SECTOR_BITS);
////goto map_whole_drive;
}else{
/* when whole drive is mapped, the geometry should not be specified. */
if (heads_per_cylinder > 0 || sectors_per_track > 0)
return errnum = ERR_SPECIFY_GEOM;
/* when whole drive is mapped, the mem option should not be specified.
* but when we delete a drive map slot, the mem option means force.
*/
if (mem != -1 && to != from)
return errnum = ERR_SPECIFY_MEM;
sectors_per_track = 1;/* 1 means the specified geometry will be ignored. */
heads_per_cylinder = 1;/* can be any value but ignored since #sectors==1. */
/* Note: if the user do want to specify geometry for whole drive map, then
* use a command like this:
*
* map --heads=H --sectors-per-track=S (hd0)+1 (hd1)
*
* where S > 1
*/
goto map_whole_drive;
}
}
// if (to == 0xff && sector_count == 1)
if (mem == -1)
{
query_block_entries = -1; /* query block list only */
blocklist_func (to_drive, flags);
//grub_printf ("1: part_start=%d, part_length=%d\n", part_start, part_length);
//grub_printf (", errnum=%d, query_block_entries=%d,map_start_sector=%d,map_num_sectors=%d,sizeof (struct drive_map_slot)=%d\n", errnum, query_block_entries, map_start_sector, map_num_sectors, sizeof (struct drive_map_slot));
if (errnum == 0)
{
if (query_block_entries != 1 && mem == -1)
return errnum = ERR_NON_CONTIGUOUS;
start_sector = map_start_sector;
//sector_count = map_num_sectors;
sector_count = (filemax + 0x1ff) >> SECTOR_BITS;
}
else
return errnum;
if (start_sector == part_start && part_start && sector_count == 1)
sector_count = part_length;
}
if ((to == 0xff /* || to == ram_drive */) && sector_count == 1)
{
/* fixed memory mapping */
grub_memmove ((char *) BS, (char *)(start_sector << 9), SECTOR_SIZE);
}else{
//grub_printf ("2: part_start=%d, part_length=%d\n", part_start, part_length);
#if 0
if (to == ram_drive && start_sector == 0 && sector_count == 1)
{
if (! grub_open ("(rd)+1"))
return 1;
}
else
#endif
if (! grub_open (to_drive))
return 1;
//grub_printf ("3: part_start=%d, part_length=%d\n", part_start, part_length);
start_sector = sector_count = 0;
rawread_ignore_memmove_overflow = 1;
disk_read_hook = disk_read_start_sector_func;
/* Read the first sector of the emulated disk. */
err = grub_read ((char *) BS, SECTOR_SIZE);
disk_read_hook = 0;
rawread_ignore_memmove_overflow = 0;
if (err != SECTOR_SIZE)
{
grub_close ();
/* This happens, if the file size is less than 512 bytes. */
if (errnum == ERR_NONE)
errnum = ERR_EXEC_FORMAT;
return 1;
}
//grub_printf ("4: part_start=%d, part_length=%d\n", part_start, part_length);
sector_count = (filemax + 0x1ff) >> SECTOR_BITS;
if (start_sector == part_start /* && part_start */ && sector_count == 1)
{
if (mem != -1)
{
grub_close ();
//grub_printf ("5: part_start=%d, part_length=%d\n", part_start, part_length);
/* Use SCRATCHADDR instead of BS, since BS holds the sector data. */
sector_count = part_length;
grub_sprintf ((char *)SCRATCHADDR, "(%d)%d+%d", to, part_start, part_length);
if (! grub_open ((char *)SCRATCHADDR))
return 1;
filepos = SECTOR_SIZE;
} else if (part_start) {
sector_count = part_length;
}
//grub_printf ("6: part_start=%d, part_length=%d\n", part_start, part_length);
}
if (/* mem != -1 */ mem > 0)
start_sector = 0xffffffff; /* a useless value, means "no care" */
if (mem == -1)
grub_close ();
// else
// grub_memmove (((char *) BS) + SECTOR_SIZE, (char *) BS, SECTOR_SIZE);
if (to == 0xff && sector_count == 1)
{
grub_printf ("For mem file in emulation, you should not specify sector_count to 1.\n");
return 1;
}
}
if (BS->boot_signature != 0xAA55)
goto geometry_probe_failed;
/* probe the BPB */
if (probe_bpb(BS))
goto failed_probe_BPB;
grub_printf ("%s BPB found %s 0xEB (jmp) leading the boot sector.\n",
filesystem_type == 1 ? "FAT12" :
filesystem_type == 2 ? "FAT16" :
filesystem_type == 3 ? "FAT32" :
filesystem_type == 4 ? "NTFS" :
/*filesystem_type == 5 ?*/ "EXT2 GRLDR",
BS->dummy1[0] == (char)0xEB ? "with" : "but WITHOUT");
if (sector_count != 1)
{
if (probed_total_sectors > sector_count)
grub_printf ("Warning: BPB total_sectors(%d) is greater than the number of sectors in the whole disk image (%d). The int13 handler will disable any read/write operations across the image boundary. That means you will not be able to read/write sectors (in absolute address, i.e., lba) %d - %d, though they are logically inside your file system.\n", probed_total_sectors, sector_count, sector_count, probed_total_sectors - 1);
else if (probed_total_sectors < sector_count)
grub_printf ("info: BPB total_sectors(%d) is less than the number of sectors in the whole disk image(%d).\n", probed_total_sectors, sector_count);
}
//grub_printf ("debug info: part_start=%d, part_length=%d, start_sector=%d, sector_count=%d, from=%x, to=%x, BS->reserved_sectors=%x, probed_sectors_per_track=%x\n", part_start, part_length, start_sector, sector_count, from, to, BS->hidden_sectors, probed_sectors_per_track);
if (mem == -1 && (from & 0x80) && (to & 0x80) && (start_sector == part_start && part_start && sector_count == part_length)/* && BS->hidden_sectors >= probed_sectors_per_track */)
{
if (BS->hidden_sectors <= probed_sectors_per_track)
BS->hidden_sectors = part_start;
extended_part_start = BS->hidden_sectors - probed_sectors_per_track;
extended_part_length = probed_total_sectors + probed_sectors_per_track;
grub_printf ("\nBPB probed C/H/S = %d/%d/%d, BPB probed total sectors = %d\n", probed_cylinders, probed_heads, probed_sectors_per_track, probed_total_sectors);
BPB_H = probed_heads;
BPB_S = probed_sectors_per_track;
if (in_situ)
{
//start_sector += probed_sectors_per_track;
//sector_count -= probed_sectors_per_track;
goto geometry_probe_ok;
}
grub_printf ("Try to locate the extended partition (hd%d)%d+%d for emulating (hd%d).\n", (to & 0x7f), extended_part_start, extended_part_length, (from & 0x7f));
grub_sprintf ((char *)BS, "(hd%d)%d+%d", (to & 0x7f), extended_part_start, extended_part_length);
if (! grub_open ((char *)BS))
return 1;
/* Read the first sector of the emulated disk. */
if (grub_read ((char *) BS, SECTOR_SIZE) != SECTOR_SIZE)
{
grub_close ();
/* This happens, if the file size is less than 512 bytes. */
if (errnum == ERR_NONE)
errnum = ERR_EXEC_FORMAT;
return 1;
}
grub_close ();
//grub_printf ("debug info: part_start=%d, part_length=%d, start_sector=%d, sector_count=%d\n", part_start, part_length, start_sector, sector_count);
for (i = 0; i < 4; i++)
{
unsigned char sys = BS->P[i].system_indicator;
if (sys == 0x05 || sys == 0x0f || sys == 0)
{
*(long long *)&(BS->P[i].boot_indicator) = 0LL;
*(long long *)(void *)&(BS->P[i].start_lba) = 0LL;
}
}
part_start = extended_part_start;
part_length = extended_part_length;
start_sector = extended_part_start;
sector_count = extended_part_length;
/* when emulating a hard disk using a logical partition, the geometry should not be specified. */
if (heads_per_cylinder > 0 || sectors_per_track > 0)
return errnum = ERR_SPECIFY_GEOM;
goto failed_probe_BPB;
}
//if (probed_cylinders * sectors_per_cylinder == probed_total_sectors)
goto geometry_probe_ok;
failed_probe_BPB:
/* probe the partition table */
if (probe_mbr (BS, start_sector, sector_count, part_start))
goto geometry_probe_failed;
if (sector_count != 1)
{
if (probed_total_sectors > sector_count)
grub_printf ("Warning: total_sectors calculated from partition table(%d) is greater than the number of sectors in the whole disk image (%d). The int13 handler will disable any read/write operations across the image boundary. That means you will not be able to read/write sectors (in absolute address, i.e., lba) %d - %d, though they are logically inside your emulated virtual disk(according to the partition table).\n", probed_total_sectors, sector_count, sector_count, probed_total_sectors - 1);
else if (probed_total_sectors < sector_count)
grub_printf ("info: total_sectors calculated from partition table(%d) is less than the number of sectors in the whole disk image(%d).\n", probed_total_sectors, sector_count);
}
goto geometry_probe_ok;
geometry_probe_failed:
if (BPB_H || BPB_S)
{
if (mem != -1)
grub_close ();
return errnum = ERR_EXTENDED_PARTITION;
}
/* possible ISO9660 image */
if (BS->boot_signature != 0xAA55)
{
if (heads_per_cylinder < 0)
heads_per_cylinder = 0;
if (sectors_per_track < 0)
sectors_per_track = 0;
}
if (heads_per_cylinder < 0)
{
if (from & 0x80)
{
if (mem != -1)
grub_close ();
return errnum = ERR_NO_HEADS;
}
/* floppy emulation */
switch (sector_count)
{
/* for the 5 standard floppy disks, offer a value */
case 720: /* 360K */
case 1440: /* 720K */
case 2400: /* 1200K */
case 2880: /* 1440K */
case 5760: /* 2880K */
heads_per_cylinder = 2; break;
default:
if (sector_count > 1 && sector_count < 5760 )
{
heads_per_cylinder = 2; break;
}
else
{
if (mem != -1)
grub_close ();
return errnum = ERR_NO_HEADS;
}
}
grub_printf ("\nAutodetect number-of-heads failed. Use default value %d\n", heads_per_cylinder);
}
else if (heads_per_cylinder == 0)
{
if (from & 0x80)
{
/* hard disk emulation */
heads_per_cylinder = 255; /* 256 */
}
else
{
/* floppy emulation */
switch (sector_count)
{
case 320: /* 160K */
case 360: /* 180K */
case 500: /* 250K */
heads_per_cylinder = 1; break;
case 1: /* a whole-disk emulation */
heads_per_cylinder = 255; break;
default:
if (sector_count <= 63 * 1024 * 2 + 1)
heads_per_cylinder = 2;
else
heads_per_cylinder = 255;
}
}
grub_printf ("\nAutodetect number-of-heads failed. Use default value %d\n", heads_per_cylinder);
}
else
{
grub_printf ("\nAutodetect number-of-heads failed. Use the specified %d\n", heads_per_cylinder);
}
if (sectors_per_track < 0)
{
if (from & 0x80)
{
if (mem != -1)
grub_close ();
return errnum = ERR_NO_SECTORS;
}
/* floppy emulation */
switch (sector_count)
{
/* for the 5 standard floppy disks, offer a value */
case 720: /* 360K */
case 1440: /* 720K */
sectors_per_track = 9; break;
case 2400: /* 1200K */
sectors_per_track = 15; break;
case 2880: /* 1440K */
sectors_per_track = 18; break;
case 5760: /* 2880K */
sectors_per_track = 36; break;
default:
if (sector_count > 1 && sector_count < 2880 )
{
sectors_per_track = 18; break;
}
else if (sector_count > 2880 && sector_count < 5760 )
{
sectors_per_track = 36; break;
}
else
{
if (mem != -1)
grub_close ();
return errnum = ERR_NO_SECTORS;
}
}
grub_printf ("\nAutodetect sectors-per-track failed. Use default value %d\n", sectors_per_track);
}
else if (sectors_per_track == 0)
{
if (sector_count == 1)
sectors_per_track = 1;
else if (from & 0x80)
{
/* hard disk emulation */
sectors_per_track = 63;
}
else
{
/* floppy emulation */
switch (sector_count)
{
case 400: /* 200K */
sectors_per_track = 5; break;
case 320: /* 160K */
case 640: /* 320K */
case 1280: /* 640K */
sectors_per_track = 8; break;
case 360: /* 180K */
case 720: /* 360K */
case 1440: /* 720K */
case 1458: /* 729K */
case 1476: /* 738K */
case 1494: /* 747K */
case 1512: /* 756K */
sectors_per_track = 9; break;
case 500: /* 250K */
case 800: /* 400K */
case 840: /* 420K */
case 1000: /* 500K */
case 1600: /* 800K */
case 1620: /* 810K */
case 1640: /* 820K */
case 1660: /* 830K */
case 1680: /* 840K */
sectors_per_track = 10; break;
case 1804: /* 902K */
sectors_per_track = 11; break;
case 1968: /* 984K */
sectors_per_track = 12; break;
case 2132: /* 1066K */
sectors_per_track = 13; break;
case 2400: /* 1200K */
case 2430: /* 1215K */
case 2460: /* 1230K */
case 2490: /* 1245K */
case 2520: /* 1260K */
sectors_per_track = 15; break;
case 2720: /* 1360K */
case 2754: /* 1377K */
case 2788: /* 1394K */
case 2822: /* 1411K */
case 2856: /* 1428K */
sectors_per_track = 17; break;
case 2880: /* 1440K */
case 2916: /* 1458K */
case 2952: /* 1476K */
case 2988: /* 1494K */
case 3024: /* 1512K */
sectors_per_track = 18; break;
case 3116: /* 1558K */
sectors_per_track = 19; break;
case 3200: /* 1600K */
case 3240: /* 1620K */
case 3280: /* 1640K */
case 3320: /* 1660K */
sectors_per_track = 20; break;
case 3360: /* 1680K */
case 3402: /* 1701K */
case 3444: /* 1722K */
case 3486: /* 1743K */
case 3528: /* 1764K */
sectors_per_track = 21; break;
case 3608: /* 1804K */
sectors_per_track = 22; break;
case 3772: /* 1886K */
sectors_per_track = 23; break;
case 5760: /* 2880K */
sectors_per_track = 36; break;
case 6396: /* 3198K */
sectors_per_track = 39; break;
case 7216: /* 3608K */
sectors_per_track = 44; break;
case 7380: /* 3690K */
sectors_per_track = 45; break;
case 7544: /* 3772K */
sectors_per_track = 46; break;
default:
if (sector_count <= 2881)
sectors_per_track = 18;
else if (sector_count <= 5761)
sectors_per_track = 36;
else
sectors_per_track = 63;
}
}
grub_printf ("\nAutodetect sectors-per-track failed. Use default value %d\n", sectors_per_track);
}
else
{
grub_printf ("\nAutodetect sectors-per-track failed. Use the specified %d\n", sectors_per_track);
}
goto map_whole_drive;
geometry_probe_ok:
grub_printf ("\nprobed C/H/S = %d/%d/%d, probed total sectors = %d\n", probed_cylinders, probed_heads, probed_sectors_per_track, probed_total_sectors);
if (BPB_H || BPB_S)
if (BPB_H != probed_heads || BPB_S != probed_sectors_per_track)
{
if (mem != -1)
grub_close ();
return errnum = ERR_EXTENDED_PARTITION;
}
if (heads_per_cylinder <= 0)
heads_per_cylinder = probed_heads;
else if (heads_per_cylinder != probed_heads)
{
grub_printf ("\nWarning!! Probed number-of-heads(%d) is not the same as you specified.\nThe specified value %d takes effect.\n", probed_heads, heads_per_cylinder);
}
if (sectors_per_track <= 0)
sectors_per_track = probed_sectors_per_track;
else if (sectors_per_track != probed_sectors_per_track)
{
grub_printf ("\nWarning!! Probed sectors-per-track(%d) is not the same as you specified.\nThe specified value %d takes effect.\n", probed_sectors_per_track, sectors_per_track);
}
map_whole_drive:
/* map whole drive, if and only if start_sector == sector_count == 0. */
/* Search for an empty slot in BIOS_DRIVE_MAP. */
for (i = 0; i < DRIVE_MAP_SIZE; i++)
{
/* Perhaps the user wants to override the map. */
if (bios_drive_map[i].from_drive == from)
break;
if (drive_map_slot_empty (bios_drive_map[i]))
break;
}
if (i == DRIVE_MAP_SIZE)
{
if (mem != -1)
grub_close ();
errnum = ERR_WONT_FIT;
return 1;
}
/* If TO == FROM and whole drive is mapped, and, no map options occur, then delete the entry. */
if (to == from && read_Only == 0 && fake_write == 0 && disable_lba_mode == 0
&& disable_chs_mode == 0 && start_sector == 0 && (sector_count == 0 ||
/* sector_count == 1 if the user uses a special method to map a whole drive, e.g., map (hd1)+1 (hd0) */
(sector_count == 1 && heads_per_cylinder <= 0 && sectors_per_track <= 1)))
goto delete_drive_map_slot;
/* check whether TO is being mapped */
//if (mem == -1)
for (j = 0; j < DRIVE_MAP_SIZE; j++)
{
if (! unset_int13_handler (1) && to == hooked_drive_map[j].from_drive)
{
if (! (hooked_drive_map[j].max_sector & 63))
disable_chs_mode = 1;
if (hooked_drive_map[j].sector_count & 1)
fake_write = 1;
else if (hooked_drive_map[j].max_sector & 128)
read_Only = 1;
if (hooked_drive_map[j].max_sector & 64)
disable_lba_mode = 1;
to = hooked_drive_map[j].to_drive;
start_sector += hooked_drive_map[j].start_sector;
/* If TO == FROM and whole drive is mapped, and, no map options occur, then delete the entry. */
if (to == from && read_Only == 0 && fake_write == 0 && disable_lba_mode == 0
&& disable_chs_mode == 0 && start_sector == 0 && (sector_count == 0 ||
/* sector_count == 1 if the user uses a special method to map a whole drive, e.g., map (hd1)+1 (hd0) */
(sector_count == 1 && heads_per_cylinder <= 0 && sectors_per_track <= 1)))
{
/* yes, delete the FROM drive(with slot[i]), not the TO drive(with slot[j]) */
goto delete_drive_map_slot;
}
break;
}
}
j = i; /* save i into j */
#ifndef GRUB_UTIL
/* how much memory should we use for the drive emulation? */
if (mem != -1)
{
unsigned long long bytes_needed;
unsigned long long base;
unsigned long long top_end;
bytes_needed = base = top_end = 0ULL;
//if (to == 0xff)
//{
//
//}else{
if (start_sector == part_start && part_start == 0 && sector_count == 1)
sector_count = part_length;
//bytes_needed = ((filemax + 0x3ff) & (-SECTOR_SIZE*2));
//bytes_needed = ((sector_count + 1) & ~1)<< SECTOR_BITS;
bytes_needed = sector_count << SECTOR_BITS;
//bytes_needed = sector_count << SECTOR_BITS;
if (mem <= 0)
base = ((unsigned long long)(-mem)) << 9;
if (bytes_needed < base)
bytes_needed = base;
/* filesystem_type
* 0 an MBR device
* 1 FAT12
* 2 FAT16
* 3 FAT32
* 4 NTFS
* -1 unknown filesystem(do not care)
*
* Note: An MBR device is a whole disk image that has a partition table.
*/
if (filesystem_type && (from & 0x80)) /* no partition table */
bytes_needed += sectors_per_track << SECTOR_BITS; /* build the Master Boot Track */
bytes_needed = (bytes_needed + 0x3ff) & 0xfffffc00; /* KB alignment */
//}
if ((to == 0xff || to == ram_drive) && sector_count == 1)
/* mem > 0 */
bytes_needed = 0;
base = 0;
/* we can list the total memory thru int15/E820. on the other hand, we can
* see thru our drive map slots how much memory have already been used for
* drive emulation. */
/* the available memory can be calculated thru int15 and the slots. */
/* total memory can always be calculated thru unhooked int15 */
/* used memory can always be calculated thru drive map slots */
/* the int15 handler:
* if not E820, return to the original int15
* for each E820 usable memory, check how much have been used in slot,
* and return the usable memory minus used memory.
*/
/* once int13 hooked and at least 1 slot uses mem==1, also hook int15
*/
if (mbi.flags & MB_INFO_MEM_MAP)
{
struct AddrRangeDesc *map = (struct AddrRangeDesc *) mbi.mmap_addr;
unsigned long end_addr = mbi.mmap_addr + mbi.mmap_length;
for (; end_addr > (unsigned long) map; map = (struct AddrRangeDesc *) (((int) map) + 4 + map->size))
{
if (map->Type != MB_ARD_MEMORY)
continue;
//bottom_end = map->BaseAddr;
top_end = map->BaseAddr + map->Length;
if (top_end > 0x100000000ULL)
top_end = 0x100000000ULL;
/* Search for mem map slots in BIOS_DRIVE_MAP. */
/* 0x4000000ULL is 64 MB , 0x100000ULL is 1 MB */
#define MIN_EMU_BASE 0x100000ULL
// if (to == 0xff) /* mem > 0 */
// if (top_end >= ((unsigned long long)mem << 10))
// bytes_needed = top_end - ((unsigned long long)mem << 10);
// else
// continue;
// else
if (mem > 0)//force the base value
{
if (((unsigned long long)mem << 9) < map->BaseAddr)
continue;
if (((unsigned long long)mem << 9) >= top_end)
continue;
if (top_end - ((unsigned long long)mem << 9) < bytes_needed)
continue;
//bytes_needed = top_end - ((unsigned long long)mem << 10);
//break;
}
if (map->Length >= bytes_needed && (base = (top_end - bytes_needed) & 0xFFFFF000) >= MIN_EMU_BASE)
for (i = 0; i < DRIVE_MAP_SIZE; i++)
{
if (drive_map_slot_empty (bios_drive_map[i]))
break;
/* TO_DRIVE == GRUB_INVALID_DRIVE indicates a MEM map */
if (bios_drive_map[i].to_drive == GRUB_INVALID_DRIVE)
{
unsigned long long x, tmpbase;
x = bios_drive_map[i].start_sector;
x <<= SECTOR_BITS;
if (x >= map->BaseAddr && x < top_end)
{
if (x - map->BaseAddr >= bytes_needed && (tmpbase = (x - bytes_needed) & 0xFFFFF000) >= MIN_EMU_BASE)
{
if (base > tmpbase)
base = tmpbase;
}
else
{
/* not enough room for this memory area */
base = 0;
break;
}
}
}
} /* for (i = 0; i < DRIVE_MAP_SIZE; i++) */
if (base >= MIN_EMU_BASE)
{
/* check if the memory area overlaps the (md)... or (rd)... file. */
if ((to != 0xff && to != ram_drive) || mem > 0)
break; /* success */
if (to == ram_drive)
start_sector += rd_base >> SECTOR_BITS;
if (base + bytes_needed <= (start_sector << SECTOR_BITS) || base >= (start_sector << SECTOR_BITS) + bytes_needed)
break; /* success */
base = 0; /* fail and try next memory block. */
}
//if (to == 0xff)
//bytes_needed = 0;
} /* for (; end_addr > (int) map; map = (struct AddrRangeDesc *) (((int) map) + 4 + map->size)) */
} /* if (mbi.flags & MB_INFO_MEM_MAP) */
else
grub_printf ("\nFatal: Your BIOS has no support for System Memory Map(INT15/EAX=E820h).\nAs a result you cannot use the --mem option.\n");
if (base < MIN_EMU_BASE)
{
grub_close ();
return errnum = ERR_WONT_FIT;
}
if (mem > 0)
{
base = ((unsigned long long)mem << 9);
//start_sector = mem << 1;
sector_count = (top_end - base) >> SECTOR_BITS;
}else{
sector_count = bytes_needed >> SECTOR_BITS;
// now sector_count may be > part_length, reading so many sectors could cause failure
}
bytes_needed = base;
if (filesystem_type && (from & 0x80)) /* no partition table */
bytes_needed += sectors_per_track << SECTOR_BITS; /* build the Master Boot Track */
/* bytes_needed points to the first partition, base points to MBR */
#undef MIN_EMU_BASE
// if (! grub_open (filename1))
// return 1;
/* the first sector already read at BS */
if ((to != 0xff && to != ram_drive)|| mem <= 0)
{
#if 1
grub_memmove ((char *)(int)bytes_needed, (char *)BS, SECTOR_SIZE);
/* read the rest of the sectors */
if (grub_read ((char *)((int)bytes_needed + SECTOR_SIZE), -1) != filemax - SECTOR_SIZE)
#else
//grub_printf ("debug info1: filemax=%d, filepos=%d, BS=%x\n", filemax, filepos, BS);
filepos = 0;
if (grub_read ((char *)((int)bytes_needed), -1) != filemax)
#endif
{
grub_close ();
if (errnum == ERR_NONE)
errnum = ERR_READ;
return 1;
}
//grub_printf ("debug info4: filemax=%d, BS=%s, to_drive=%s\n", filemax, BS, to_drive);
grub_close ();
}
start_sector = base >> SECTOR_BITS;
to = GRUB_INVALID_DRIVE;
if (filesystem_type && (from & 0x80)) /* no partition table */
{
unsigned long sectors_per_cylinder1, cylinder, sector_rem;
unsigned long head, sector;
/* modify the BPB drive number. required for FAT12/16/32/NTFS */
if (filesystem_type != -1)
if (!*(char *)((int)bytes_needed + ((filesystem_type == 3) ? 0x41 : 0x25)))
*(char *)((int)bytes_needed + ((filesystem_type == 3) ? 0x40 : 0x24)) = from;
/* modify the BPB hidden sectors. required for FAT12/16/32/NTFS/EXT2 */
if (filesystem_type != -1 || *(unsigned long *)((int)bytes_needed + 0x1c) == part_start)
*(unsigned long *)((int)bytes_needed + 0x1c) = sectors_per_track;
/* build the partition table */
*(long *)((int)base + 0x1be) = 0x00010180L;
*(char *)((int)base + 0x1c2) = //((filesystem_type == -1 || filesystem_type == 5)? 0x83 : filesystem_type == 4 ? 0x07 : 0x0c);
filesystem_type == 1 ? 0x0E /* FAT12 */ :
filesystem_type == 2 ? 0x0E /* FAT16 */ :
filesystem_type == 3 ? 0x0C /* FAT32 */ :
filesystem_type == 4 ? 0x07 /* NTFS */ :
/*filesystem_type == 5 ?*/ 0x83 /* EXT2 */;
//sector_count += sectors_per_track; /* already incremented above */
/* calculate the last sector's C/H/S value */
sectors_per_cylinder1 = sectors_per_track * heads_per_cylinder;
cylinder = (sector_count - 1) / sectors_per_cylinder1;
sector_rem = (sector_count - 1) % sectors_per_cylinder1;
head = sector_rem / sectors_per_track;
sector = sector_rem % sectors_per_track;
sector++;
*(char *)((int)base + 0x1c3) = head;
*(unsigned short *)((int)base + 0x1c4) = sector | (cylinder << 8) | ((cylinder >> 8) << 6);
*(unsigned long *)((int)base + 0x1c6) = sectors_per_track; /* start LBA */
*(unsigned long *)((int)base + 0x1ca) = sector_count - sectors_per_track; /* sector count */
*(long long *)((int)base + 0x1ce) = 0LL;
*(long long *)((int)base + 0x1d6) = 0LL;
*(long long *)((int)base + 0x1de) = 0LL;
*(long long *)((int)base + 0x1e6) = 0LL;
*(long long *)((int)base + 0x1ee) = 0LL;
*(long long *)((int)base + 0x1f6) = 0LL;
*(unsigned short *)((int)base + 0x1fe) = 0xAA55;
/* compose a master boot record routine */
*(char *)((int)base) = 0xFA; /* cli */
*(unsigned short *)((int)base + 0x01) = 0xC033; /* xor AX,AX */
*(unsigned short *)((int)base + 0x03) = 0xD08E; /* mov SS,AX */
*(long *)((int)base + 0x05) = 0xFB7C00BC; /* mov SP,7C00 ; sti */
*(long *)((int)base + 0x09) = 0x07501F50; /* push AX; pop DS */
/* push AX; pop ES */
*(long *)((int)base + 0x0d) = 0x7C1CBEFC; /* cld; mov SI,7C1C */
*(long *)((int)base + 0x11) = 0x50061CBF; /* mov DI,061C ; push AX */
*(long *)((int)base + 0x15) = 0x01E4B957; /* push DI ; mov CX, 01E4 */
*(long *)((int)base + 0x19) = 0x1ECBA4F3; /* repz movsb;retf;push DS */
*(long *)((int)base + 0x1d) = 0x537C00BB; /* mov BX,7C00 ; push BX */
*(long *)((int)base + 0x21) = 0x520180BA; /* mov DX,0180 ; push DX */
*(long *)((int)base + 0x25) = 0x530201B8; /* mov AX,0201 ; push BX */
*(long *)((int)base + 0x29) = 0x5F13CD41; /* inc CX; int 13; pop DI */
*(long *)((int)base + 0x2d) = 0x5607BEBE; /* mov SI,07BE ; push SI */
*(long *)((int)base + 0x31) = 0xCBFA5A5D; /* pop BP;pop DX;cli;retf */
}
}
#endif /* GRUB_UTIL */
if (in_situ)
bios_drive_map[j].to_cylinder =
filesystem_type == 1 ? 0x0E /* FAT12 */ :
filesystem_type == 2 ? 0x0E /* FAT16 */ :
filesystem_type == 3 ? 0x0C /* FAT32 */ :
filesystem_type == 4 ? 0x07 /* NTFS */ :
/*filesystem_type == 5 ?*/ 0x83 /* EXT2 */;
/* Get the geometry. This ensures that the drive is present. */
if (get_diskinfo (to, &tmp_geom))
{
return errnum = ERR_NO_DISK;
}
i = j; /* restore i from j */
bios_drive_map[i].from_drive = from;
bios_drive_map[i].to_drive = to;
/* if CHS disabled, let MAX_HEAD != 0 to ensure a non-empty slot */
bios_drive_map[i].max_head = disable_chs_mode | (heads_per_cylinder - 1);
bios_drive_map[i].max_sector = (disable_chs_mode ? 0 : in_situ ? 1 : sectors_per_track) | ((read_Only | fake_write) << 7) | (disable_lba_mode << 6);
if (! in_situ)
bios_drive_map[i].to_cylinder = (tmp_geom.cylinders - 1 > 0x3FF) ? 0x3FF : tmp_geom.cylinders - 1;
bios_drive_map[i].to_head = tmp_geom.heads - 1;
bios_drive_map[i].to_sector = tmp_geom.sectors | ((fake_write | ! unsafe_boot) << 6);
if (in_situ)
bios_drive_map[i].to_sector |= 0x80;
bios_drive_map[i].start_sector = start_sector;
bios_drive_map[i].start_sector_hi = 0; /* currently only low 32 bits are used. */
if (read_Only)
unsafe_boot = 1;
bios_drive_map[i].sector_count = sector_count;//(sector_count & 0xfffffffe) | fake_write | ! unsafe_boot;
bios_drive_map[i].sector_count_hi = 0; /* currently only low 32 bits are used. */
#ifndef GRUB_UTIL
/* increase the floppies or harddrives if needed */
if (from & 0x80)
{
if (*((char *)0x475) < (char)(from - 0x80 + 1))
{
*((char *)0x475) = (char)(from - 0x80 + 1);
print_bios_total_drives();
}
}else{
if (((*(char*)0x410) & 1)?((*(char*)0x410) >> 6) + 1 : 0 < ((char)from + 1))
{
*((char *)0x410) &= 0x3e;
*((char *)0x410) |= ((char)from) ? 0x41 : 1;
print_bios_total_drives();
}
}
#endif /* GRUB_UTIL */
return 0;
delete_drive_map_slot:
if (bios_drive_map[i].to_drive == GRUB_INVALID_DRIVE)
for (j = DRIVE_MAP_SIZE - 1; j > i ; j--)
{
if (bios_drive_map[j].to_drive == GRUB_INVALID_DRIVE)
{
if (mem == -1)
return errnum = ERR_DEL_MEM_DRIVE;
else /* force delete all subsequent MEM map slots */
grub_memmove ((char *) &bios_drive_map[j], (char *) &bios_drive_map[j + 1], sizeof (struct drive_map_slot) * (DRIVE_MAP_SIZE - j));
}
}
grub_memmove ((char *) &bios_drive_map[i], (char *) &bios_drive_map[i + 1], sizeof (struct drive_map_slot) * (DRIVE_MAP_SIZE - i));
if (mem != -1)
grub_close ();
#undef BS
#ifndef GRUB_UTIL
/* Search for the Max floppy drive number in the drive map table. */
from = 0;
for (i = 0; i < DRIVE_MAP_SIZE; i++)
{
if (drive_map_slot_empty (bios_drive_map[i]))
break;
if (! (bios_drive_map[i].from_drive & 0x80) && from < bios_drive_map[i].from_drive + 1)
from = bios_drive_map[i].from_drive + 1;
}
/* max possible floppies that can be handled in BIOS Data Area is 4 */
if (from > 4)
from = 4;
if (from <= (floppies_orig & 1)?(floppies_orig >> 6) + 1 : 0)
if (((*(char*)0x410) & 1)?((*(char*)0x410) >> 6) + 1 : 0 > (floppies_orig & 1)?(floppies_orig >> 6) + 1 : 0)
{
/* decrease the floppies */
(*(char*)0x410) = floppies_orig;
print_bios_total_drives();
}
/* Search for the Max hard drive number in the drive map table. */
from = 0;
for (i = 0; i < DRIVE_MAP_SIZE; i++)
{
if (drive_map_slot_empty (bios_drive_map[i]))
break;
if ((bios_drive_map[i].from_drive & 0x80) && from < bios_drive_map[i].from_drive - 0x80 + 1)
from = bios_drive_map[i].from_drive - 0x80 + 1;
}
if (from <= harddrives_orig)
if ((*(char*)0x475) > harddrives_orig)
{
/* decrease the harddrives */
(*(char*)0x475) = harddrives_orig;
print_bios_total_drives();
}
#endif /* ! GRUB_UTIL */
return 0;
}
static struct builtin builtin_map =
{
"map",
map_func,
BUILTIN_MENU | BUILTIN_CMDLINE | BUILTIN_HELP_LIST,
"map [--status] [--mem[=RESERV]] [--hook] [--unhook] [--rehook]\n [--floppies=M] [--harddrives=N] [--memdisk-raw=RAW] [--safe-mbr-hook=SMH]\n [--int13-scheme=SCH] [--ram-drive=RD] [--rd-base=ADDR] [--rd-size=SIZE]\n [[--read-only] [--fake-write] [--unsafe-boot] [--disable-chs-mode]\n [--disable-lba-mode] [--heads=H] [--sectors-per-track=S] TO_DRIVE FROM_DRIVE]",
"Map the drive FROM_DRIVE to the drive TO_DRIVE. This is necessary"
" when you chain-load some operating systems, such as DOS, if such an"
" OS resides at a non-first drive. TO_DRIVE can be a disk file, this"
" indicates a disk emulation. If TO_DRIVE is a disk file, it must be"
" contiguous(i.e., no holes in it). If --read-only is given, the"
" emulated drive will be write-protected. If --fake-write is given,"
" any write operations to the emulated drive are allowed but the data"
" written will be discarded. The --unsafe-boot switch enables the write"
" to the Master and DOS boot sectors of the emulated disk."
" If --disable-chs-mode is given, CHS access to the emulated drive will"
" be refused. If --disable-lba-mode is given, LBA access to the emulated"
" drive will be refused. H and S specify the geometry of the emulated drive."
" M/N specify the floppy/harddrive count in the BIOS data area. if RAW=1,"
" all memdrives will be accessed without using int15/ah=87h. if RAW=0, then"
" int15/ah=87h will be used to access memdrives."
" If one of --status, --hook, --unhook, --rehook, --floppies, --harddrives,"
" --memdisk-raw, --safe-mbr-hook, --int13-scheme, --ram-drive, --rd-base or"
" --rd-size is"
" given, then any other command-line arguments will be ignored. They either"
" report or change the int13 status, or change the floppy or hard drive"
" count byte in the BIOS data area. The --mem option indicates a drive in"
" memory. if RESERV is used and <= 0, the minimum memory occupied by the"
" memdrive is (-RESERV) in 512-byte-sectors. if RESERV is used and > 0,"
" the memdrive will occupy the mem area starting at absolute physical"
" address RESERV in 512-byte-sectors and ending at the end of this mem"
" block(usually the end of physical mem). RD specifies the ramdisk number,"
" and can be a BIOS drive number. ADDR specifies the base address of the"
" ramdisk image. SIZE specifies the size in bytes of the ramdisk image."
};
#endif /* ! GRUB_UTIL */
#ifdef USE_MD5_PASSWORDS
/* md5crypt */
static int
md5crypt_func (char *arg, int flags)
{
char crypted[36];
char key[32];
unsigned int seed;
//int i;
const char *const seedchars =
"./0123456789ABCDEFGHIJKLMNOPQRST"
"UVWXYZabcdefghijklmnopqrstuvwxyz";
/* First create a salt. */
/* The magical prefix. */
grub_memset (crypted, 0, sizeof (crypted));
grub_memmove (crypted, "$1$", 3);
/* Create the length of a salt. */
#ifdef GRUB_UTIL
seed = currticks ();
#else
seed = *(unsigned int *)0x46C;
#endif
/* Generate a salt. */
for (i = 0; i < 8 && seed; i++)
{
/* FIXME: This should be more random. */
crypted[3 + i] = seedchars[seed & 0x3f];
seed >>= 6;
}
/* A salt must be terminated with `$', if it is less than 8 chars. */
crypted[3 + i] = '$';
#ifdef DEBUG_MD5CRYPT
grub_printf ("salt = %s\n", crypted);
#endif
/* Get a password. */
grub_memset (key, 0, sizeof (key));
get_cmdline ("Password: ", key, sizeof (key) - 1, '*', 0);
/* Crypt the key. */
make_md5_password (key, crypted);
grub_printf ("Encrypted: %s\n", crypted);
return 0;
}
static struct builtin builtin_md5crypt =
{
"md5crypt",
md5crypt_func,
BUILTIN_MENU | BUILTIN_CMDLINE | BUILTIN_HELP_LIST,
"md5crypt",
"Generate a password in MD5 format."
};
#endif /* USE_MD5_PASSWORDS */
/* module */
static int
module_func (char *arg, int flags)
{
int len = grub_strlen (arg);
switch (kernel_type)
{
case KERNEL_TYPE_MULTIBOOT:
if (mb_cmdline + len + 1 > (char *) MB_CMDLINE_BUF + MB_CMDLINE_BUFLEN)
{
errnum = ERR_WONT_FIT;
return 1;
}
grub_memmove (mb_cmdline, arg, len + 1);
if (! load_module (arg, mb_cmdline))
return 1;
mb_cmdline += len + 1;
break;
case KERNEL_TYPE_LINUX:
case KERNEL_TYPE_BIG_LINUX:
if (! load_initrd (arg))
return 1;
break;
default:
errnum = ERR_NEED_MB_KERNEL;
return 1;
}
return 0;
}
static struct builtin builtin_module =
{
"module",
module_func,
BUILTIN_MENU | BUILTIN_CMDLINE | BUILTIN_HELP_LIST,
"module FILE [ARG ...]",
"Load a boot module FILE for a Multiboot format boot image (no"
" interpretation of the file contents is made, so users of this"
" command must know what the kernel in question expects). The"
" rest of the line is passed as the \"module command line\", like"
" the `kernel' command."
};
/* modulenounzip */
static int
modulenounzip_func (char *arg, int flags)
{
int ret;
#ifndef NO_DECOMPRESSION
no_decompression = 1;
#endif
ret = module_func (arg, flags);
#ifndef NO_DECOMPRESSION
no_decompression = 0;
#endif
return ret;
}
static struct builtin builtin_modulenounzip =
{
"modulenounzip",
modulenounzip_func,
BUILTIN_MENU | BUILTIN_CMDLINE | BUILTIN_HELP_LIST,
"modulenounzip FILE [ARG ...]",
"The same as `module', except that automatic decompression is"
" disabled."
};
/* pager [on|off] */
static int
pager_func (char *arg, int flags)
{
/* If ARG is empty, toggle the flag. */
if (! *arg)
use_pager = ! use_pager;
else if (grub_memcmp (arg, "on", 2) == 0)
use_pager = 1;
else if (grub_memcmp (arg, "off", 3) == 0)
use_pager = 0;
else
{
errnum = ERR_BAD_ARGUMENT;
return 1;
}
grub_printf (" Internal pager is now %s\n", use_pager ? "on" : "off");
return 0;
}
static struct builtin builtin_pager =
{
"pager",
pager_func,
BUILTIN_CMDLINE | BUILTIN_MENU | BUILTIN_HELP_LIST,
"pager [FLAG]",
"Toggle pager mode with no argument. If FLAG is given and its value"
" is `on', turn on the mode. If FLAG is `off', turn off the mode."
};
/* Convert a LBA address to a CHS address in the INT 13 format. */
static void lba_to_chs (unsigned long lba, unsigned long *cl, unsigned long *ch, unsigned long *dh);
static void
lba_to_chs (unsigned long lba, unsigned long *cl, unsigned long *ch, unsigned long *dh)
{
unsigned long cylinder, head, sector;
sector = lba % buf_geom.sectors + 1;
head = (lba / buf_geom.sectors) % buf_geom.heads;
cylinder = lba / (buf_geom.sectors * buf_geom.heads);
if (cylinder >= buf_geom.cylinders)
cylinder = buf_geom.cylinders - 1;
*cl = sector | ((cylinder & 0x300) >> 2);
*ch = cylinder & 0xFF;
*dh = head;
}
/* partnew PART TYPE START LEN */
static int
partnew_func (char *arg, int flags)
{
unsigned long new_type, new_start, new_len;
unsigned long start_cl, start_ch, start_dh;
unsigned long end_cl, end_ch, end_dh;
//unsigned long entry;
#if defined(STAGE1_5) || defined(GRUB_UTIL)
// char mbr[512];
#endif
/* Get the drive and the partition. */
if (! set_device (arg))
return 1;
/* The drive must be a hard disk. */
if (! (current_drive & 0x80))
{
errnum = ERR_BAD_ARGUMENT;
return 1;
}
/* The partition must a primary partition. */
if ((current_partition >> 16) > 3
|| (current_partition & 0xFFFF) != 0xFFFF)
{
errnum = ERR_BAD_ARGUMENT;
return 1;
}
entry = current_partition >> 16;
/* Get the new partition type. */
arg = skip_to (0, arg);
if (! safe_parse_maxint (&arg, (int *)(void *)&new_type))
return 1;
/* The partition type is unsigned char. */
if (new_type > 0xFF)
{
errnum = ERR_BAD_ARGUMENT;
return 1;
}
/* Get the new partition start. */
arg = skip_to (0, arg);
if (! safe_parse_maxint (&arg, (int *)(void *)&new_start))
return 1;
/* Get the new partition length. */
arg = skip_to (0, arg);
if (! safe_parse_maxint (&arg, (int *)(void *)&new_len))
return 1;
/* Read the MBR. */
if (! rawread (current_drive, 0, 0, SECTOR_SIZE, mbr))
return 1;
/* Check if the new partition will fit in the disk. */
if (new_start + new_len > buf_geom.total_sectors)
{
errnum = ERR_GEOM;
return 1;
}
/* Store the partition information in the MBR. */
lba_to_chs (new_start, &start_cl, &start_ch, &start_dh);
lba_to_chs (new_start + new_len - 1, &end_cl, &end_ch, &end_dh);
PC_SLICE_FLAG (mbr, entry) = 0;
PC_SLICE_HEAD (mbr, entry) = start_dh;
PC_SLICE_SEC (mbr, entry) = start_cl;
PC_SLICE_CYL (mbr, entry) = start_ch;
PC_SLICE_TYPE (mbr, entry) = new_type;
PC_SLICE_EHEAD (mbr, entry) = end_dh;
PC_SLICE_ESEC (mbr, entry) = end_cl;
PC_SLICE_ECYL (mbr, entry) = end_ch;
PC_SLICE_START (mbr, entry) = new_start;
PC_SLICE_LENGTH (mbr, entry) = new_len;
/* Make sure that the MBR has a valid signature. */
PC_MBR_SIG (mbr) = PC_MBR_SIGNATURE;
/* Write back the MBR to the disk. */
buf_track = -1;
if (! rawwrite (current_drive, 0, mbr))
return 1;
return 0;
}
static struct builtin builtin_partnew =
{
"partnew",
partnew_func,
BUILTIN_CMDLINE | BUILTIN_MENU | BUILTIN_HELP_LIST,
"partnew PART TYPE START LEN",
"Create a primary partition at the starting address START with the"
" length LEN, with the type TYPE. START and LEN are in sector units."
};
/* parttype PART TYPE */
static int
parttype_func (char *arg, int flags)
{
int new_type;
unsigned long part = 0xFFFFFF;
unsigned long start, len, offset;//, ext_offset;
unsigned long type;//, entry;
#if defined(STAGE1_5) || defined(GRUB_UTIL)
// char mbr[512];
#endif
/* Get the drive and the partition. */
if (! set_device (arg))
return 1;
/* The drive must be a hard disk. */
if (! (current_drive & 0x80))
{
errnum = ERR_BAD_ARGUMENT;
return 1;
}
/* The partition must be a PC slice. */
if ((current_partition >> 16) == 0xFF
|| (current_partition & 0xFFFF) != 0xFFFF)
{
errnum = ERR_BAD_ARGUMENT;
return 1;
}
/* Get the new partition type. */
arg = skip_to (0, arg);
if (! safe_parse_maxint (&arg, &new_type))
return 1;
/* The partition type is unsigned char. */
if (new_type > 0xFF)
{
errnum = ERR_BAD_ARGUMENT;
return 1;
}
/* Look for the partition. */
while (( next_partition_drive = current_drive,
next_partition_dest = 0xFFFFFF,
next_partition_partition = &part,
next_partition_type = &type,
next_partition_start = &start,
next_partition_len = &len,
next_partition_offset = &offset,
next_partition_entry = &entry,
next_partition_ext_offset = &ext_offset,
next_partition_buf = mbr,
next_partition ()))
// while (next_partition (current_drive, 0xFFFFFF, &part, &type,
// &start, &len, &offset, &entry,
// &ext_offset, mbr))
{
if (part == current_partition)
{
/* Found. */
/* Set the type to NEW_TYPE. */
PC_SLICE_TYPE (mbr, entry) = new_type;
/* Write back the MBR to the disk. */
buf_track = -1;
if (! rawwrite (current_drive, offset, mbr))
return 1;
/* Succeed. */
return 0;
}
}
/* The partition was not found. ERRNUM was set by next_partition. */
return 1;
}
static struct builtin builtin_parttype =
{
"parttype",
parttype_func,
BUILTIN_CMDLINE | BUILTIN_MENU | BUILTIN_HELP_LIST,
"parttype PART TYPE",
"Change the type of the partition PART to TYPE."
};
/* password */
static int
password_func (char *arg, int flags)
{
int len;
password_t type = PASSWORD_PLAIN;
#ifdef USE_MD5_PASSWORDS
if (grub_memcmp (arg, "--md5", 5) == 0)
{
type = PASSWORD_MD5;
arg = skip_to (0, arg);
}
#endif
if (grub_memcmp (arg, "--", 2) == 0)
{
type = PASSWORD_UNSUPPORTED;
arg = skip_to (0, arg);
}
if ((flags & (BUILTIN_CMDLINE | BUILTIN_SCRIPT)) != 0)
{
/* Do password check! */
char entered[32];
/* Wipe out any previously entered password */
entered[0] = 0;
get_cmdline ("Password: ", entered, 31, '*', 0);
nul_terminate (arg);
if (check_password (entered, arg, type) != 0)
{
errnum = ERR_PRIVILEGED;
return 1;
}
}
else
{
len = grub_strlen (arg);
/* PASSWORD NUL NUL ... */
if (len + 2 > PASSWORD_BUFLEN)
{
errnum = ERR_WONT_FIT;
return 1;
}
/* Copy the password and clear the rest of the buffer. */
password = (char *) PASSWORD_BUF;
grub_memmove (password, arg, len);
grub_memset (password + len, 0, PASSWORD_BUFLEN - len);
password_type = type;
}
return 0;
}
static struct builtin builtin_password =
{
"password",
password_func,
BUILTIN_MENU | BUILTIN_CMDLINE | BUILTIN_NO_ECHO,
"password [--md5] PASSWD [FILE]",
"If used in the first section of a menu file, disable all"
" interactive editing control (menu entry editor and"
" command line). If the password PASSWD is entered, it loads the"
" FILE as a new config file and restarts the GRUB Stage 2. If you"
" omit the argument FILE, then GRUB just unlocks privileged"
" instructions. You can also use it in the script section, in"
" which case it will ask for the password, before continueing."
" The option --md5 tells GRUB that PASSWD is encrypted with"
" md5crypt."
};
/* pause */
static int
pause_func (char *arg, int flags)
{
char *p;
int wait = -1;
int time1;
int time2 = -1;
for (;;)
{
if (grub_memcmp (arg, "--wait=", 7) == 0)
{
p = arg + 7;
if (! safe_parse_maxint (&p, &wait))
return 1;
}
else
break;
arg = skip_to (0, arg);
}
printf("%s\n", arg);
/* Get current time. */
while ((time1 = getrtsecs ()) == 0xFF);
for (;;)
{
/* Check if there is a key-press. */
if (checkkey () != -1)
{
/* Check the special ESC key */
if (ASCII_CHAR (getkey ()) == '\e')
return 1; /* abort this entry */
else
return 0; /* end */
}
if (wait != -1
&& (time1 = getrtsecs ()) != time2
&& time1 != 0xFF)
{
if (wait == 0)
{
return 0; /* timed out, return as if a key is pressed */
}
time2 = time1;
wait--;
}
}
return 0;
}
static struct builtin builtin_pause =
{
"pause",
pause_func,
BUILTIN_MENU | BUILTIN_CMDLINE | BUILTIN_NO_ECHO,
"pause [--wait=T] [MESSAGE ...]",
"Print MESSAGE, then wait until a key is pressed or T seconds has passed."
};
#ifdef FSYS_PXE
/* pxe */
static struct builtin builtin_pxe =
{
"pxe",
pxe_func,
BUILTIN_MENU | BUILTIN_CMDLINE | BUILTIN_HELP_LIST,
"pxe [cmd] [parameters]",
"Call PXE command."
};
#endif
#ifdef GRUB_UTIL
/* quit */
static int
quit_func (char *arg, int flags)
{
stop ();
/* Never reach here. */
return 0;
}
static struct builtin builtin_quit =
{
"quit",
quit_func,
BUILTIN_MENU | BUILTIN_CMDLINE | BUILTIN_HELP_LIST,
"quit",
"Exit from the GRUB shell."
};
#else
/* quit */
static int
quit_func (char *arg, int flags)
{
//long i;
register long Sum;
/* check if we were launched from DOS. */
if (*(long *)0x2A0000 != 0x50554B42) /* "BKUP" */
{
return errnum = ERR_DOS_BACKUP;
}
for (i = 0, Sum = 0; i < (0xA0000 + 16) / 4; i++)
{
Sum += *(long *)(0x200000 + (i << 2));
}
if (Sum)
return errnum = ERR_DOS_BACKUP;
chainloader_disable_A20 = 0;
//grub_memmove((char *)0x110000, (char *)0x200000, 0xA0000);
for (;;)
{
if (grub_memcmp (arg, "--disable-a20", 13) == 0)
{
chainloader_disable_A20 = 1;
}
else
break;
arg = skip_to (0, arg);
}
chain_load_segment = 0;
chain_load_offset = 0;
chain_boot_CS = *(unsigned short*)(0x2A0000 + 10);
chain_boot_IP = *(unsigned short*)(0x2A0000 + 8);
chain_load_length = 0xA0000;
chain_ebx = 0;
chain_ebx_set = 0;
chain_edx = 0;
chain_edx_set = 0;
chain_enable_gateA20 = ((*(short *)(0x2A0000 + 4)) != 0);
if (chainloader_disable_A20)
chain_enable_gateA20 = 0;
/* move the code to a safe place at 0x2B0000 */
grub_memmove((char *)HMA_ADDR, HMA_start, 0xfff0);
/* Turn off A20 here if the DOS image told us to do so. Note: we won't have
* access to the odd megas of the memory when A20 is off.
*/
if (!chain_enable_gateA20)
{
if (gateA20 (0))
grub_printf("\nGate A20 is turned off successfully.\n");
else {
/* to asure A20 is on when we return to grub. */
gateA20 (1); /* turn on A20 in case it is off */
if (chainloader_disable_A20)
return errnum = ERR_DISABLE_A20;
else
{
grub_printf("\nFailed to turn off Gate A20!\n");
chain_enable_gateA20 = 1;
}
}
}
/* Jump to high memory area. This will move boot code at
* 0x110000 to the destination load-segment:load-offset;
* setup edx and ebx registers; switch to real mode;
* and jump to boot-cs:boot-ip.
*/
((void (*)(void))HMA_ADDR)(); /* no return */
return 0;
}
static struct builtin builtin_quit =
{
"quit",
quit_func,
BUILTIN_MENU | BUILTIN_CMDLINE | BUILTIN_HELP_LIST,
"quit [--disable-a20]",
"Go back to DOS if GRUB was previously launched from DOS."
};
#endif /* GRUB_UTIL */
#ifdef SUPPORT_NETBOOT
#ifndef GRUB_UTIL
/* rarp */
static int
rarp_func (char *arg, int flags)
{
if (! rarp ())
{
if (errnum == ERR_NONE)
errnum = ERR_DEV_VALUES;
return 1;
}
/* Notify the configuration. */
print_network_configuration ();
return 0;
}
static struct builtin builtin_rarp =
{
"rarp",
rarp_func,
BUILTIN_CMDLINE | BUILTIN_MENU | BUILTIN_HELP_LIST,
"rarp",
"Initialize a network device via RARP."
};
#endif /* ! GRUB_UTIL */
#endif /* SUPPORT_NETBOOT */
#ifndef GRUB_UTIL
static int
read_func (char *arg, int flags)
{
int addr;
if (! safe_parse_maxint (&arg, &addr))
return 1;
grub_printf ("Address 0x%x: Value 0x%x\n",
addr, *((unsigned *) RAW_ADDR (addr)));
return 0;
}
static struct builtin builtin_read =
{
"read",
read_func,
BUILTIN_MENU | BUILTIN_CMDLINE,
"read ADDR",
"Read a 32-bit value from memory at address ADDR and"
" display it in hex format."
};
static int
write_func (char *arg, int flags)
{
int addr;
int val;
if (! safe_parse_maxint (&arg, &addr))
return 1;
arg = skip_to (0, arg);
if (! safe_parse_maxint (&arg, &val))
return 1;
*((unsigned *) RAW_ADDR (addr)) = (unsigned)val;
grub_printf ("Address 0x%x: Value 0x%x\n",
addr, *((unsigned *) RAW_ADDR (addr)));
return 0;
}
static struct builtin builtin_write =
{
"write",
write_func,
BUILTIN_MENU | BUILTIN_CMDLINE,
"write ADDR VAL",
"Write a 32-bit value VAL to memory at address ADDR."
};
/* reboot */
static int
reboot_func (char *arg, int flags)
{
grub_reboot ();
/* Never reach here. */
return 1;
}
static struct builtin builtin_reboot =
{
"reboot",
reboot_func,
BUILTIN_MENU | BUILTIN_CMDLINE | BUILTIN_HELP_LIST,
"reboot",
"Reboot your system."
};
#endif /* ! GRUB_UTIL */
/* Print the root device information. */
static void
print_root_device (void)
{
if (saved_drive == NETWORK_DRIVE)
{
/* Network drive. */
grub_printf (" (nd):");
}
else if (saved_drive & 0x80)
{
/* Hard disk drive. */
grub_printf (" (hd%d", saved_drive - 0x80);
if ((saved_partition & 0xFF0000) != 0xFF0000)
grub_printf (",%d", saved_partition >> 16);
if ((saved_partition & 0x00FF00) != 0x00FF00)
grub_printf (",%c", ((saved_partition >> 8) & 0xFF) + 'a');
grub_printf ("):");
}
else
{
/* Floppy disk drive. */
grub_printf (" (fd%d):", saved_drive);
}
/* Print the filesystem information. */
current_partition = saved_partition;
current_drive = saved_drive;
print_fsys_type ();
}
static int
real_root_func (char *arg, int attempt_mnt)
{
int hdbias = 0;
char *biasptr;
char *next;
/* If ARG is empty, just print the current root device. */
if (! *arg)
{
print_root_device ();
return 0;
}
/* Call set_device to get the drive and the partition in ARG. */
next = set_device (arg);
if (! next)
return 1;
/* Ignore ERR_FSYS_MOUNT. */
if (attempt_mnt)
{
if (! open_device () && errnum != ERR_FSYS_MOUNT)
return 1;
}
else
{
/* This is necessary, because the location of a partition table
must be set appropriately. */
if (open_partition ())
{
set_bootdev (0);
if (errnum)
return 1;
}
}
saved_partition = current_partition;
saved_drive = current_drive;
if (attempt_mnt)
{
/* BSD and chainloading evil hacks !! */
biasptr = skip_to (0, next);
safe_parse_maxint (&biasptr, &hdbias);
errnum = 0;
bootdev = set_bootdev (hdbias);
if (errnum)
return 1;
if (fsys_type != NUM_FSYS)
/* Print the type of the filesystem. */
print_fsys_type ();
else
return errnum = ERR_FSYS_MOUNT;
}
if (chainloader_edx_set)
{
chainloader_edx &= 0xFFFF0000;
chainloader_edx |= saved_drive | ((saved_partition >> 8) & 0xFF00);
}
if (chainloader_ebx_set && chainloader_ebx)
{
chainloader_ebx &= 0xFFFF0000;
chainloader_ebx |= saved_drive | ((saved_partition >> 8) & 0xFF00);
}
/* Clear ERRNUM. */
errnum = 0;
return 0;
}
static int
root_func (char *arg, int flags)
{
return real_root_func (arg, 1);
}
static struct builtin builtin_root =
{
"root",
root_func,
BUILTIN_MENU | BUILTIN_CMDLINE | BUILTIN_HELP_LIST,
"root [DEVICE [HDBIAS]]",
"Set the current \"root device\" to the device DEVICE, then"
" attempt to mount it to get the partition size (for passing the"
" partition descriptor in `ES:ESI', used by some chain-loaded"
" bootloaders), the BSD drive-type (for booting BSD kernels using"
" their native boot format), and correctly determine "
" the PC partition where a BSD sub-partition is located. The"
" optional HDBIAS parameter is a number to tell a BSD kernel"
" how many BIOS drive numbers are on controllers before the current"
" one. For example, if there is an IDE disk and a SCSI disk, and your"
" FreeBSD root partition is on the SCSI disk, then use a `1' for HDBIAS."
};
/* rootnoverify */
static int
rootnoverify_func (char *arg, int flags)
{
return real_root_func (arg, 0);
}
static struct builtin builtin_rootnoverify =
{
"rootnoverify",
rootnoverify_func,
BUILTIN_MENU | BUILTIN_CMDLINE | BUILTIN_HELP_LIST,
"rootnoverify [DEVICE [HDBIAS]]",
"Similar to `root', but don't attempt to mount the partition. This"
" is useful for when an OS is outside of the area of the disk that"
" GRUB can read, but setting the correct root device is still"
" desired. Note that the items mentioned in `root' which"
" derived from attempting the mount will NOT work correctly."
};
static int time1;
static int time2;
#if !defined(SUPPORT_DISKLESS) && !defined(GRUB_UTIL)
static unsigned long saved_sectors[2];
static unsigned long saved_offsets[2];
static unsigned long saved_lengths[2];
static int wait;
static unsigned long entryno;
static char *default_file;
static int c;
static int deny_write;
/* Save sector information about at most two sectors. */
static void disk_read_savesect_func1 (unsigned long sector, unsigned long offset, unsigned long length);
static void
disk_read_savesect_func1 (unsigned long sector, unsigned long offset, unsigned long length)
{
if (blklst_num_sectors < 2)
{
saved_sectors[blklst_num_sectors] = sector;
saved_offsets[blklst_num_sectors] = offset;
saved_lengths[blklst_num_sectors] = length;
}
blklst_num_sectors++;
}
static void prompt_user (void);
static void
prompt_user (void)
{
int wait1;
wait1 = wait;
printf("\nAbout to write the entry number %d to file %s\n\n"
"Press Y to allow or N to deny.\n", entryno, default_file);
/* Get current time. */
while ((time1 = getrtsecs ()) == 0xFF);
for (;;)
{
/* Check if ESC is pressed. */
if (checkkey () != -1 /*&& ASCII_CHAR (getkey ()) == '\e'*/)
{
if ((c = ASCII_CHAR (getkey ())) == '\e')
{
deny_write = 2; /* abort this entry */
break;
}
if (c == 'Y' || c == 'y')
{
deny_write = -1;
break; /* allow the write */
}
if (c == 'N' || c == 'n')
{
deny_write = 1;
break; /* deny the write */
}
/* any other key restore the wait */
wait1 = wait;
}
if (wait1 != -1
&& (time1 = getrtsecs ()) != time2
&& time1 != 0xFF)
{
if (wait1 == 0)
{
deny_write = 1;
break; /* timed out, deny the write */
}
time2 = time1;
wait1--;
}
}
}
#endif /* ! SUPPORT_DISKLESS && ! GRUB_UTIL */
/* savedefault */
static int
savedefault_func (char *arg, int flags)
{
#if !defined(SUPPORT_DISKLESS) && !defined(GRUB_UTIL)
unsigned long tmp_drive = saved_drive;
unsigned long tmp_partition = saved_partition;
char *p;
// int ignore_error = 0;
blklst_num_sectors = 0;
wait = 0;
default_file = (char *) DEFAULT_FILE_BUF;
time2 = -1;
deny_write = 0;
/* This command is only useful when you boot an entry from the menu
interface. */
if (! (flags & BUILTIN_SCRIPT))
{
errnum = ERR_UNRECOGNIZED;
return 1;
}
for (;;)
{
/*if (grub_memcmp (arg, "--ignore-error", 14) == 0)
{
ignore_error = 1;
}
else*/ if (grub_memcmp (arg, "--wait=", 7) == 0)
{
p = arg + 7;
if (! safe_parse_maxint (&p, &wait))
return 1;
}
else
break;
arg = skip_to (0, arg);
}
/* Determine a saved entry number. */
if (*arg)
{
if (grub_memcmp (arg, "fallback", sizeof ("fallback") - 1) == 0)
{
//int i;
int index = 0;
for (i = 0; i < MAX_FALLBACK_ENTRIES; i++)
{
if (fallback_entries[i] < 0)
break;
if (fallback_entries[i] == current_entryno)
{
index = i + 1;
break;
}
}
if (index >= MAX_FALLBACK_ENTRIES || fallback_entries[index] < 0)
{
/* This is the last. */
errnum = ERR_BAD_ARGUMENT;
return 1;
}
entryno = fallback_entries[index];
}
else if (! safe_parse_maxint (&arg, (int *)(void *)&entryno))
return 1;
}
else
entryno = current_entryno;
/* Open the default file. */
saved_drive = boot_drive;
saved_partition = install_partition;
if (grub_open (default_file))
{
unsigned long len, len1;
char buf[12];
#ifdef STAGE1_5
char mbr[512];
#endif
if (compressed_file)
{
errnum = ERR_DEFAULT_FILE;
goto fail;
}
saved_lengths[0] = 0;
disk_read_hook = disk_read_savesect_func1;
len = grub_read (mbr, 512);
disk_read_hook = 0;
grub_close ();
if (len != ((filemax <= 512) ? filemax : 512))
{
/* Read file failure */
errnum = ERR_READ;
goto fail;
}
if (len < 180 || filemax > 2048)
{
/* This is too small or too large. Do not modify the file manually! */
errnum = ERR_DEFAULT_FILE;
goto fail;
}
/* check file content for safety */
p = mbr;
while (p < mbr + len - 100 &&
grub_memcmp (++p, warning_defaultfile, 73));
//grub_printf ("p=%x, mbr=%x, len=%x, mbr + len - 160 = %x\n", p, mbr, len, mbr + len - 160);
if (p > mbr + len - 160)
{
errnum = ERR_DEFAULT_FILE;
goto fail;
}
//grub_printf("sector_count=%x, saved_sectors[0]=%x, saved_sectors[1]=%x, saved_offsets[0]=%x, saved_offsets[1]=%x, saved_lengths[0]=%x, saved_lengths[1]=%x\n", sector_count, saved_sectors[0], saved_sectors[1], saved_offsets[0], saved_offsets[1], saved_lengths[0], saved_lengths[1]);
if (blklst_num_sectors > 2 || blklst_num_sectors <= 0 || saved_lengths[0] <= 0 || saved_lengths[0] > SECTOR_SIZE)
{
/* Is this possible?! Too fragmented! */
errnum = ERR_FSYS_CORRUPT;
goto fail;
}
/* Set up a string to be written. */
//grub_memset (mbr, '\n', 11);
len = grub_sprintf (buf, "%d", entryno);
len++; /* including the ending null. */
// if (saved_lengths[0] < len)
// {
//char sect[512];
if (! rawread (current_drive, saved_sectors[0], 0, SECTOR_SIZE, mbr))
goto fail;
len1 = saved_lengths[0] < len ? saved_lengths[0] : len;
/* it is not good to write a sector frequently, so check if we
* can skip the write. */
if (grub_memcmp (mbr + saved_offsets[0], buf, len1))
{
grub_memmove (mbr + saved_offsets[0], buf, len1);
/* confirm the write */
if (wait && deny_write == 0)
prompt_user();
if (deny_write == 2)
return 1;
if (deny_write <= 0 )
{
if (! rawwrite (current_drive, saved_sectors[0], mbr))
goto fail;
}
}
/* The file is anchored to another file and the first few bytes
are spanned in two sectors. Uggh... */
//len = strlen(buf) + 1; /* entryno and the ending NULL */
/* only LEN bytes need to be written */
if (saved_lengths[0] < len)
{
/* write the rest bytes to the second sector */
if (! rawread (current_drive, saved_sectors[1], 0, 512, mbr))
goto fail;
/* skip the write if possible. */
if (grub_memcmp (mbr + saved_offsets[1],
buf + saved_lengths[0],
len - saved_lengths[0]))
{
grub_memmove (mbr + saved_offsets[1],
buf + saved_lengths[0],
len - saved_lengths[0]);
if (wait && deny_write == 0)
prompt_user();
if (deny_write == 2)
return 1;
if (deny_write <= 0 )
{
if (! rawwrite (current_drive, saved_sectors[1], mbr))
goto fail;
}
}
}
// }
// else
// {
// /* This is a simple case. It fits into a single sector. */
// if (! rawread (current_drive, saved_sectors[0], 0, SECTOR_SIZE,
// sect))
// goto fail;
// grub_memmove (sect + saved_offsets[0], buf, len);
// if (! rawwrite (current_drive, saved_sectors[0], sect))
// goto fail;
// }
/* Clear the cache. */
buf_track = -1;
}
fail:
saved_drive = tmp_drive;
saved_partition = tmp_partition;
if (errnum)
{
grub_printf ("\nError occurred while savedefault.\n");
/* ignore all errors */
errnum = 0;
}
return errnum;
#else /* ! SUPPORT_DISKLESS && ! GRUB_UTIL */
errnum = ERR_UNRECOGNIZED;
return 1;
#endif /* ! SUPPORT_DISKLESS && ! GRUB_UTIL */
}
static struct builtin builtin_savedefault =
{
"savedefault",
savedefault_func,
BUILTIN_MENU | BUILTIN_CMDLINE,
"savedefault [--wait=T] [NUM | `fallback']",
"Save the current entry as the default boot entry if no argument is"
" specified. If a number is specified, this number is saved. If"
" `fallback' is used, next fallback entry is saved."
" If T is not 0, prompt the user to confirm the write operation by"
" pressing the Y key, and if no key-press detected within T seconds,"
" the write will be discarded."
};
#ifdef SUPPORT_SERIAL
/* serial */
static int
serial_func (char *arg, int flags)
{
unsigned short port = serial_hw_get_port (0);
unsigned int speed = 9600;
int word_len = UART_8BITS_WORD;
int parity = UART_NO_PARITY;
int stop_bit_len = UART_1_STOP_BIT;
/* Process GNU-style long options.
FIXME: We should implement a getopt-like function, to avoid
duplications. */
while (1)
{
if (grub_memcmp (arg, "--unit=", sizeof ("--unit=") - 1) == 0)
{
char *p = arg + sizeof ("--unit=") - 1;
int unit;
if (! safe_parse_maxint (&p, &unit))
return 1;
if (unit < 0 || unit > 3)
{
errnum = ERR_DEV_VALUES;
return 1;
}
port = serial_hw_get_port (unit);
}
else if (grub_memcmp (arg, "--speed=", sizeof ("--speed=") - 1) == 0)
{
char *p = arg + sizeof ("--speed=") - 1;
int num;
if (! safe_parse_maxint (&p, &num))
return 1;
speed = (unsigned int) num;
}
else if (grub_memcmp (arg, "--port=", sizeof ("--port=") - 1) == 0)
{
char *p = arg + sizeof ("--port=") - 1;
int num;
if (! safe_parse_maxint (&p, &num))
return 1;
port = (unsigned short) num;
}
else if (grub_memcmp (arg, "--word=", sizeof ("--word=") - 1) == 0)
{
char *p = arg + sizeof ("--word=") - 1;
int len;
if (! safe_parse_maxint (&p, &len))
return 1;
switch (len)
{
case 5: word_len = UART_5BITS_WORD; break;
case 6: word_len = UART_6BITS_WORD; break;
case 7: word_len = UART_7BITS_WORD; break;
case 8: word_len = UART_8BITS_WORD; break;
default:
errnum = ERR_BAD_ARGUMENT;
return 1;
}
}
else if (grub_memcmp (arg, "--stop=", sizeof ("--stop=") - 1) == 0)
{
char *p = arg + sizeof ("--stop=") - 1;
int len;
if (! safe_parse_maxint (&p, &len))
return 1;
switch (len)
{
case 1: stop_bit_len = UART_1_STOP_BIT; break;
case 2: stop_bit_len = UART_2_STOP_BITS; break;
default:
errnum = ERR_BAD_ARGUMENT;
return 1;
}
}
else if (grub_memcmp (arg, "--parity=", sizeof ("--parity=") - 1) == 0)
{
char *p = arg + sizeof ("--parity=") - 1;
if (grub_memcmp (p, "no", sizeof ("no") - 1) == 0)
parity = UART_NO_PARITY;
else if (grub_memcmp (p, "odd", sizeof ("odd") - 1) == 0)
parity = UART_ODD_PARITY;
else if (grub_memcmp (p, "even", sizeof ("even") - 1) == 0)
parity = UART_EVEN_PARITY;
else
{
errnum = ERR_BAD_ARGUMENT;
return 1;
}
}
# ifdef GRUB_UTIL
/* In the grub shell, don't use any port number but open a tty
device instead. */
else if (grub_memcmp (arg, "--device=", sizeof ("--device=") - 1) == 0)
{
char *p = arg + sizeof ("--device=") - 1;
char dev[256]; /* XXX */
char *q = dev;
while (*p && ! grub_isspace (*p))
*q++ = *p++;
*q = 0;
serial_set_device (dev);
}
# endif /* GRUB_UTIL */
else
break;
arg = skip_to (0, arg);
}
/* Initialize the serial unit. */
if (! serial_hw_init (port, speed, word_len, parity, stop_bit_len))
{
errnum = ERR_BAD_ARGUMENT;
return 1;
}
return 0;
}
static struct builtin builtin_serial =
{
"serial",
serial_func,
BUILTIN_MENU | BUILTIN_CMDLINE | BUILTIN_HELP_LIST,
"serial [--unit=UNIT] [--port=PORT] [--speed=SPEED] [--word=WORD]\n [--parity=PARITY] [--stop=STOP] [--device=DEV]",
"Initialize a serial device. UNIT is a digit that specifies which serial"
" device is used (e.g. 0 == COM1). If you need to specify the port number,"
" set it by --port. SPEED is the DTE-DTE speed. WORD is the word length,"
" PARITY is the type of parity, which is one of `no', `odd' and `even'."
" STOP is the length of stop bit(s). The option --device can be used only"
" in the grub shell, which specifies the file name of a tty device. The"
" default values are COM1, 9600, 8N1."
};
#endif /* SUPPORT_SERIAL */
/* setkey */
struct keysym
{
char *unshifted_name; /* the name in unshifted state */
char *shifted_name; /* the name in shifted state */
unsigned char unshifted_ascii; /* the ascii code in unshifted state */
unsigned char shifted_ascii; /* the ascii code in shifted state */
unsigned char keycode; /* keyboard scancode */
};
/* The table for key symbols. If the "shifted" member of an entry is
NULL, the entry does not have shifted state. */
static struct keysym keysym_table[] =
{
{"escape", 0, 0x1b, 0, 0x01},
{"1", "exclam", '1', '!', 0x02},
{"2", "at", '2', '@', 0x03},
{"3", "numbersign", '3', '#', 0x04},
{"4", "dollar", '4', '$', 0x05},
{"5", "percent", '5', '%', 0x06},
{"6", "caret", '6', '^', 0x07},
{"7", "ampersand", '7', '&', 0x08},
{"8", "asterisk", '8', '*', 0x09},
{"9", "parenleft", '9', '(', 0x0a},
{"0", "parenright", '0', ')', 0x0b},
{"minus", "underscore", '-', '_', 0x0c},
{"equal", "plus", '=', '+', 0x0d},
{"backspace", 0, '\b', 0, 0x0e},
{"tab", 0, '\t', 0, 0x0f},
{"q", "Q", 'q', 'Q', 0x10},
{"w", "W", 'w', 'W', 0x11},
{"e", "E", 'e', 'E', 0x12},
{"r", "R", 'r', 'R', 0x13},
{"t", "T", 't', 'T', 0x14},
{"y", "Y", 'y', 'Y', 0x15},
{"u", "U", 'u', 'U', 0x16},
{"i", "I", 'i', 'I', 0x17},
{"o", "O", 'o', 'O', 0x18},
{"p", "P", 'p', 'P', 0x19},
{"bracketleft", "braceleft", '[', '{', 0x1a},
{"bracketright", "braceright", ']', '}', 0x1b},
{"enter", 0, '\n', 0, 0x1c},
{"control", 0, 0, 0, 0x1d},
{"a", "A", 'a', 'A', 0x1e},
{"s", "S", 's', 'S', 0x1f},
{"d", "D", 'd', 'D', 0x20},
{"f", "F", 'f', 'F', 0x21},
{"g", "G", 'g', 'G', 0x22},
{"h", "H", 'h', 'H', 0x23},
{"j", "J", 'j', 'J', 0x24},
{"k", "K", 'k', 'K', 0x25},
{"l", "L", 'l', 'L', 0x26},
{"semicolon", "colon", ';', ':', 0x27},
{"quote", "doublequote", '\'', '"', 0x28},
{"backquote", "tilde", '`', '~', 0x29},
{"shift", 0, 0, 0, 0x2a},
{"backslash", "bar", '\\', '|', 0x2b},
{"z", "Z", 'z', 'Z', 0x2c},
{"x", "X", 'x', 'X', 0x2d},
{"c", "C", 'c', 'C', 0x2e},
{"v", "V", 'v', 'V', 0x2f},
{"b", "B", 'b', 'B', 0x30},
{"n", "N", 'n', 'N', 0x31},
{"m", "M", 'm', 'M', 0x32},
{"comma", "less", ',', '<', 0x33},
{"period", "greater", '.', '>', 0x34},
{"slash", "question", '/', '?', 0x35},
{"alt", 0, 0, 0, 0x38},
{"space", 0, ' ', 0, 0x39},
{"capslock", 0, 0, 0, 0x3a},
{"F1", 0, 0, 0, 0x3b},
{"F2", 0, 0, 0, 0x3c},
{"F3", 0, 0, 0, 0x3d},
{"F4", 0, 0, 0, 0x3e},
{"F5", 0, 0, 0, 0x3f},
{"F6", 0, 0, 0, 0x40},
{"F7", 0, 0, 0, 0x41},
{"F8", 0, 0, 0, 0x42},
{"F9", 0, 0, 0, 0x43},
{"F10", 0, 0, 0, 0x44},
/* Caution: do not add NumLock here! we cannot deal with it properly. */
{"delete", 0, 0x7f, 0, 0x53}
};
static int find_key_code (char *key);
static int find_ascii_code (char *key);
static int
find_key_code (char *key)
{
//int i;
for (i = 0; i < sizeof (keysym_table) / sizeof (keysym_table[0]); i++)
{
if (keysym_table[i].unshifted_name &&
grub_strcmp (key, keysym_table[i].unshifted_name) == 0)
return keysym_table[i].keycode;
else if (keysym_table[i].shifted_name &&
grub_strcmp (key, keysym_table[i].shifted_name) == 0)
return keysym_table[i].keycode;
}
return 0;
}
static int
find_ascii_code (char *key)
{
//int i;
for (i = 0; i < sizeof (keysym_table) / sizeof (keysym_table[0]); i++)
{
if (keysym_table[i].unshifted_name &&
grub_strcmp (key, keysym_table[i].unshifted_name) == 0)
return keysym_table[i].unshifted_ascii;
else if (keysym_table[i].shifted_name &&
grub_strcmp (key, keysym_table[i].shifted_name) == 0)
return keysym_table[i].shifted_ascii;
}
return 0;
}
static int
setkey_func (char *arg, int flags)
{
char *to_key, *from_key;
int to_code, from_code;
int map_in_interrupt = 0;
to_key = arg;
from_key = skip_to (0, to_key);
if (! *to_key)
{
/* If the user specifies no argument, reset the key mappings. */
grub_memset (bios_key_map, 0, KEY_MAP_SIZE * sizeof (unsigned short));
grub_memset (ascii_key_map, 0, KEY_MAP_SIZE * sizeof (unsigned short));
return 0;
}
else if (! *from_key)
{
/* The user must specify two arguments or zero argument. */
errnum = ERR_BAD_ARGUMENT;
return 1;
}
nul_terminate (to_key);
nul_terminate (from_key);
to_code = find_ascii_code (to_key);
from_code = find_ascii_code (from_key);
if (! to_code || ! from_code)
{
map_in_interrupt = 1;
to_code = find_key_code (to_key);
from_code = find_key_code (from_key);
if (! to_code || ! from_code)
{
errnum = ERR_BAD_ARGUMENT;
return 1;
}
}
if (map_in_interrupt)
{
//int i;
/* Find an empty slot. */
for (i = 0; i < KEY_MAP_SIZE; i++)
{
if ((bios_key_map[i] & 0xff) == from_code)
/* Perhaps the user wants to overwrite the map. */
break;
if (! bios_key_map[i])
break;
}
if (i == KEY_MAP_SIZE)
{
errnum = ERR_WONT_FIT;
return 1;
}
if (to_code == from_code)
/* If TO is equal to FROM, delete the entry. */
grub_memmove ((char *) &bios_key_map[i],
(char *) &bios_key_map[i + 1],
sizeof (unsigned short) * (KEY_MAP_SIZE - i));
else
bios_key_map[i] = (to_code << 8) | from_code;
#ifndef GRUB_UTIL
/* Ugly but should work. */
unset_int15_handler ();
set_int15_handler ();
#endif
}
else
{
//int i;
/* Find an empty slot. */
for (i = 0; i < KEY_MAP_SIZE; i++)
{
if ((ascii_key_map[i] & 0xff) == from_code)
/* Perhaps the user wants to overwrite the map. */
break;
if (! ascii_key_map[i])
break;
}
if (i == KEY_MAP_SIZE)
{
errnum = ERR_WONT_FIT;
return 1;
}
if (to_code == from_code)
/* If TO is equal to FROM, delete the entry. */
grub_memmove ((char *) &ascii_key_map[i],
(char *) &ascii_key_map[i + 1],
sizeof (unsigned short) * (KEY_MAP_SIZE - i));
else
ascii_key_map[i] = (to_code << 8) | from_code;
}
return 0;
}
static struct builtin builtin_setkey =
{
"setkey",
setkey_func,
BUILTIN_CMDLINE | BUILTIN_MENU | BUILTIN_HELP_LIST,
"setkey [TO_KEY FROM_KEY]",
"Change the keyboard map. The key FROM_KEY is mapped to the key TO_KEY."
" A key must be an alphabet, a digit, or one of these: escape, exclam,"
" at, numbersign, dollar, percent, caret, ampersand, asterisk, parenleft,"
" parenright, minus, underscore, equal, plus, backspace, tab, bracketleft,"
" braceleft, bracketright, braceright, enter, control, semicolon, colon,"
" quote, doublequote, backquote, tilde, shift, backslash, bar, comma,"
" less, period, greater, slash, question, alt, space, capslock, FX (X"
" is a digit), and delete. If no argument is specified, reset key"
" mappings."
};
struct stage1_5_map {
char *fsys;
char *name;
};
static struct stage1_5_map stage1_5_map[] =
{
{"ext2fs", "/e2fs_stage1_5"},
{"fat", "/fat_stage1_5"},
{"ntfs", "/ntfs_stage1_5"},
{"ufs2", "/ufs2_stage1_5"},
{"ffs", "/ffs_stage1_5"},
{"iso9660", "/iso9660_stage1_5"},
{"jfs", "/jfs_stage1_5"},
{"minix", "/minix_stage1_5"},
{"reiserfs", "/reiserfs_stage1_5"},
{"vstafs", "/vstafs_stage1_5"},
{"xfs", "/xfs_stage1_5"}
};
#ifdef GRUB_UTIL
static char device[16];
static char tmp[16];
static char stage15[64];
static char cmd_arg[256];
static char stage1[64];
static char stage2[64];
static char config_filename[64];
static char real_config_filename[64];
#else
static char *device = (char *)0x700; // use only 16 bytes at 0x700
static char *tmp = (char *)0x710; // use only 16 bytes at 0x710
static char *stage15 = (char *)0x780; // use only 64 bytes at 0x780
static char *cmd_arg = (char *)0x8000; // use 256 bytes at 0x8000
static char *stage1 = (char *)0x8100; // use 64 bytes at 0x8100
static char *stage2 = (char *)0x8140; // use 64 bytes at 0x8140
static char *config_filename = (char *)0x8180; // use 64 bytes at 0x8180
static char *real_config_filename = (char *)0x81C0;// use 64 bytes at 0x81C0
//ending at 0x8200, where the pre_stage2 code starts
#endif
static char *buffer;
static int check_file (char *file);
static void sprint_device (int drive, int partition);
static int embed_stage1_5 (char *stage1_5, int drive, int partition, int flags);
/* Check if the file FILE exists like Autoconf. */
static int
check_file (char *file)
{
int ret;
grub_printf (" Checking if \"%s\" exists... ", file);
ret = grub_open (file);
if (ret)
{
grub_close ();
grub_printf ("yes\n");
}
else
grub_printf ("no\n");
return ret;
}
/* Construct a device name in DEVICE. */
static void
sprint_device (int drive, int partition)
{
grub_sprintf (device, "(%cd%d",
(drive & 0x80) ? 'h' : 'f',
drive & ~0x80);
if ((partition & 0xFF0000) != 0xFF0000)
{
//char tmp[16];
grub_sprintf (tmp, ",%d", (partition >> 16) & 0xFF);
grub_strncat (device, tmp, 16);
}
if ((partition & 0x00FF00) != 0x00FF00)
{
//char tmp[16];
grub_sprintf (tmp, ",%c", 'a' + ((partition >> 8) & 0xFF));
grub_strncat (device, tmp, 16);
}
grub_strncat (device, ")", 16);
}
static int
embed_stage1_5 (char *stage1_5, int drive, int partition, int flags)
{
/* We install GRUB into the MBR, so try to embed the
Stage 1.5 in the sectors right after the MBR. */
sprint_device (drive, partition);
grub_sprintf (cmd_arg, "%s %s", stage1_5, device);
/* Notify what will be run. */
grub_printf (" Running \"embed %s\"... ", cmd_arg);
embed_func (cmd_arg, flags);
if (! errnum)
{
/* Construct the blocklist representation. */
grub_sprintf (buffer, "%s%s", device, embed_info);
grub_printf ("succeeded\n");
return 1;
}
else
{
grub_printf ("failed (this is not fatal)\n");
return 0;
}
}
/* setup */
static int
setup_func (char *arg, int flags)
{
/* Point to the string of the installed drive/partition. */
char *install_ptr;
/* Point to the string of the drive/parition where the GRUB images
reside. */
char *image_ptr;
unsigned long installed_drive, installed_partition;
unsigned long image_drive, image_partition;
unsigned long tmp_drive, tmp_partition;
int is_force_lba = 0;
char *stage2_arg = 0;
char *prefix = 0;
tmp_drive = saved_drive;
tmp_partition = saved_partition;
buffer = (char *) RAW_ADDR (0x100000);
/* Check if the user specifies --force-lba. */
while (1)
{
if (grub_memcmp ("--force-lba", arg, sizeof ("--force-lba") - 1) == 0)
{
is_force_lba = 1;
arg = skip_to (0, arg);
}
else if (grub_memcmp ("--prefix=", arg, sizeof ("--prefix=") - 1) == 0)
{
prefix = arg + sizeof ("--prefix=") - 1;
arg = skip_to (0, arg);
nul_terminate (prefix);
}
#ifdef GRUB_UTIL
else if (grub_memcmp ("--stage2=", arg, sizeof ("--stage2=") - 1) == 0)
{
stage2_arg = arg;
arg = skip_to (0, arg);
nul_terminate (stage2_arg);
}
#endif /* GRUB_UTIL */
else
break;
}
install_ptr = arg;
image_ptr = skip_to (0, install_ptr);
/* Make sure that INSTALL_PTR is valid. */
set_device (install_ptr);
if (errnum)
goto fail;// return 1;
installed_drive = current_drive;
installed_partition = current_partition;
/* Mount the drive pointed by IMAGE_PTR. */
if (*image_ptr)
{
/* If the drive/partition where the images reside is specified,
get the drive and the partition. */
set_device (image_ptr);
if (errnum)
goto fail;// return 1;
}
else
{
/* If omitted, use SAVED_PARTITION and SAVED_DRIVE. */
current_drive = saved_drive;
current_partition = saved_partition;
}
image_drive = saved_drive = current_drive;
image_partition = saved_partition = current_partition;
/* Open it. */
if (! open_device ())
goto fail;
/* Check if stage1 exists. If the user doesn't specify the option
`--prefix', attempt /boot/grub and /grub. */
/* NOTE: It is dangerous to run this command without `--prefix' in the
grub shell, since that affects `--stage2'. */
if (! prefix)
{
prefix = "/boot/grub";
grub_sprintf (stage1, "%s%s", prefix, "/stage1");
if (! check_file (stage1))
{
errnum = ERR_NONE;
prefix = "/grub";
grub_sprintf (stage1, "%s%s", prefix, "/stage1");
if (! check_file (stage1))
goto fail;
}
}
else
{
grub_sprintf (stage1, "%s%s", prefix, "/stage1");
if (! check_file (stage1))
goto fail;
}
/* The prefix was determined. */
grub_sprintf (stage2, "%s%s", prefix, "/stage2");
grub_sprintf (config_filename, "%s%s", prefix, "/menu.lst");
*real_config_filename = 0;
/* Check if stage2 exists. */
if (! check_file (stage2))
goto fail;
{
char *fsys = fsys_table[fsys_type].name;
//int i;
int size = sizeof (stage1_5_map) / sizeof (stage1_5_map[0]);
/* Iterate finding the same filesystem name as FSYS. */
for (i = 0; i < size; i++)
if (grub_strcmp (fsys, stage1_5_map[i].fsys) == 0)
{
/* OK, check if the Stage 1.5 exists. */
//char stage15[64];
grub_sprintf (stage15, "%s%s", prefix, stage1_5_map[i].name);
if (check_file (stage15))
{
if (embed_stage1_5 (stage15, installed_drive, installed_partition, flags)
|| embed_stage1_5 (stage15, image_drive, image_partition, flags))
{
grub_strcpy (real_config_filename, config_filename);
sprint_device (image_drive, image_partition);
grub_sprintf (config_filename, "%s%s", device, stage2);
grub_strcpy (stage2, buffer);
}
}
errnum = 0;
break;
}
}
/* Construct a string that is used by the command "install" as its
arguments. */
sprint_device (installed_drive, installed_partition);
#if 1
/* Don't embed a drive number unnecessarily. */
grub_sprintf (cmd_arg, "%s%s%s%s %s%s %s p %s %s",
is_force_lba? "--force-lba " : "",
stage2_arg? stage2_arg : "",
stage2_arg? " " : "",
stage1,
(installed_drive != image_drive) ? "d " : "",
device,
stage2,
config_filename,
real_config_filename);
#else /* NOT USED */
/* This code was used, because we belived some BIOSes had a problem
that they didn't pass a booting drive correctly. It turned out,
however, stage1 could trash a booting drive when checking LBA support,
because some BIOSes modified the register %dx in INT 13H, AH=48H.
So it becamed unclear whether GRUB should use a pre-defined booting
drive or not. If the problem still exists, it would be necessary to
switch back to this code. */
grub_sprintf (cmd_arg, "%s%s%s%s d %s %s p %s %s",
is_force_lba? "--force-lba " : "",
stage2_arg? stage2_arg : "",
stage2_arg? " " : "",
stage1,
device,
stage2,
config_filename,
real_config_filename);
#endif /* NOT USED */
/* Notify what will be run. */
grub_printf (" Running \"install %s\"... ", cmd_arg);
/* Make sure that SAVED_DRIVE and SAVED_PARTITION are identical
with IMAGE_DRIVE and IMAGE_PARTITION, respectively. */
saved_drive = image_drive;
saved_partition = image_partition;
/* Run the command. */
if (! install_func (cmd_arg, flags))
grub_printf ("succeeded\nDone.\n");
else
grub_printf ("failed\n");
fail:
saved_drive = tmp_drive;
saved_partition = tmp_partition;
grub_printf ("\n\nNotice: the two commands SETUP and INSTALL will be removed soon! Please use the\nOS utility of BOOTLACE.COM to install GRLDR boot record to the MBR or to the\nboot area of a specified partition.\n\n");
return errnum;
}
static struct builtin builtin_setup =
{
"setup",
setup_func,
BUILTIN_MENU | BUILTIN_CMDLINE | BUILTIN_HELP_LIST,
"setup [--prefix=DIR] [--stage2=STAGE2_FILE] [--force-lba]\n INSTALL_DEVICE [IMAGE_DEVICE]",
"Set up the installation of GRUB automatically. This command uses"
" the more flexible command \"install\" in the backend and installs"
" GRUB into the device INSTALL_DEVICE. If IMAGE_DEVICE is specified,"
" then find the GRUB images in the device IMAGE_DEVICE, otherwise"
" use the current \"root device\", which can be set by the command"
" \"root\". If you know that your BIOS should support LBA but GRUB"
" doesn't work in LBA mode, specify the option `--force-lba'."
" If you install GRUB under the grub shell and you cannot unmount the"
" partition where GRUB images reside, specify the option `--stage2'"
" to tell GRUB the file name under your OS."
};
#if defined(SUPPORT_SERIAL) || defined(SUPPORT_HERCULES) || defined(SUPPORT_GRAPHICS)
/* terminal */
static int
terminal_func (char *arg, int flags)
{
/* The index of the default terminal in TERM_TABLE. */
int default_term = -1;
struct term_entry *prev_term = current_term;
int to = -1;
int lines = 0;
int no_message = 0;
unsigned long term_flags = 0;
/* XXX: Assume less than 32 terminals. */
unsigned long term_bitmap = 0;
/* Get GNU-style long options. */
while (1)
{
if (grub_memcmp (arg, "--dumb", sizeof ("--dumb") - 1) == 0)
term_flags |= TERM_DUMB;
else if (grub_memcmp (arg, "--no-echo", sizeof ("--no-echo") - 1) == 0)
/* ``--no-echo'' implies ``--no-edit''. */
term_flags |= (TERM_NO_ECHO | TERM_NO_EDIT);
else if (grub_memcmp (arg, "--no-edit", sizeof ("--no-edit") - 1) == 0)
term_flags |= TERM_NO_EDIT;
else if (grub_memcmp (arg, "--timeout=", sizeof ("--timeout=") - 1) == 0)
{
char *val = arg + sizeof ("--timeout=") - 1;
if (! safe_parse_maxint (&val, &to))
return 1;
}
else if (grub_memcmp (arg, "--lines=", sizeof ("--lines=") - 1) == 0)
{
char *val = arg + sizeof ("--lines=") - 1;
if (! safe_parse_maxint (&val, &lines))
return 1;
/* Probably less than four is meaningless.... */
if (lines < 4)
{
errnum = ERR_BAD_ARGUMENT;
return 1;
}
}
else if (grub_memcmp (arg, "--silent", sizeof ("--silent") - 1) == 0)
no_message = 1;
else
break;
arg = skip_to (0, arg);
}
/* If no argument is specified, show current setting. */
if (! *arg)
{
grub_printf ("%s%s%s%s\n",
current_term->name,
current_term->flags & TERM_DUMB ? " (dumb)" : "",
current_term->flags & TERM_NO_EDIT ? " (no edit)" : "",
current_term->flags & TERM_NO_ECHO ? " (no echo)" : "");
return 0;
}
while (*arg)
{
//int i;
char *next = skip_to (0, arg);
nul_terminate (arg);
for (i = 0; term_table[i].name; i++)
{
if (grub_strcmp (arg, term_table[i].name) == 0)
{
if (term_table[i].flags & TERM_NEED_INIT)
{
errnum = ERR_DEV_NEED_INIT;
return 1;
}
if (default_term < 0)
default_term = i;
term_bitmap |= (1 << i);
break;
}
}
if (! term_table[i].name)
{
errnum = ERR_BAD_ARGUMENT;
return 1;
}
arg = next;
}
/* If multiple terminals are specified, wait until the user pushes any
key on one of the terminals. */
if (term_bitmap & ~(1 << default_term))
{
time2 = -1;
/* XXX: Disable the pager. */
count_lines = -1;
/* Get current time. */
while ((time1 = getrtsecs ()) == 0xFF)
;
/* Wait for a key input. */
while (to)
{
//int i;
for (i = 0; term_table[i].name; i++)
{
if (term_bitmap & (1 << i))
{
if (term_table[i].checkkey () >= 0)
{
(void) term_table[i].getkey ();
default_term = i;
goto end;
}
}
}
/* Prompt the user, once per sec. */
if ((time1 = getrtsecs ()) != time2 && time1 != 0xFF)
{
if (! no_message)
{
/* Need to set CURRENT_TERM to each of selected
terminals. */
for (i = 0; term_table[i].name; i++)
if (term_bitmap & (1 << i))
{
current_term = term_table + i;
grub_printf ("\rPress any key to continue.\n");
}
/* Restore CURRENT_TERM. */
current_term = prev_term;
}
time2 = time1;
if (to > 0)
to--;
}
}
}
end:
current_term = term_table + default_term;
current_term->flags = term_flags;
if (lines)
max_lines = lines;
else
max_lines = current_term->max_lines;
/* If the interface is currently the command-line,
restart it to repaint the screen. */
if (current_term != prev_term /*&& (flags & BUILTIN_CMDLINE)*/)
{
if (prev_term->shutdown)
prev_term->shutdown();
if (current_term->startup)
current_term->startup();
// grub_longjmp (restart_cmdline_env, 0);
}
return 0;
}
static struct builtin builtin_terminal =
{
"terminal",
terminal_func,
BUILTIN_MENU | BUILTIN_CMDLINE | BUILTIN_HELP_LIST,
"terminal [--dumb] [--no-echo] [--no-edit] [--timeout=SECS]\n [--lines=LINES] [--silent] [console] [serial] [hercules] [graphics]",
"Select a terminal. When multiple terminals are specified, wait until"
" you push any key to continue. If both console and serial are specified,"
" the terminal to which you input a key first will be selected. If no"
" argument is specified, print current setting. The option --dumb"
" specifies that your terminal is dumb, otherwise, vt100-compatibility"
" is assumed. If you specify --no-echo, input characters won't be echoed."
" If you specify --no-edit, the BASH-like editing feature will be disabled."
" If --timeout is present, this command will wait at most for SECS"
" seconds. The option --lines specifies the maximum number of lines."
" The option --silent is used to suppress messages."
};
#endif /* SUPPORT_SERIAL || SUPPORT_HERCULES || SUPPORT_GRAPHICS */
#ifdef SUPPORT_SERIAL
#ifdef GRUB_UTIL
static struct terminfo term1; //struct takes up 200 bytes!!
static struct terminfo *term = &term1;
static struct
{
const char *name;
char *var;
}
options[] =
{
{"--name=", term1.name},
{"--cursor-address=", term1.cursor_address},
{"--clear-screen=", term1.clear_screen},
{"--enter-standout-mode=", term1.enter_standout_mode},
{"--exit-standout-mode=", term1.exit_standout_mode}
};
#else
static struct terminfo *term = (struct terminfo *)0x8000; //use 200 bytes
static struct
{
const char *name;
char *var;
}
options[] =
{
{"--name=", ((struct terminfo *)0x8000)->name},
{"--cursor-address=", ((struct terminfo *)0x8000)->cursor_address},
{"--clear-screen=", ((struct terminfo *)0x8000)->clear_screen},
{"--enter-standout-mode=", ((struct terminfo *)0x8000)->enter_standout_mode},
{"--exit-standout-mode=", ((struct terminfo *)0x8000)->exit_standout_mode}
};
#endif
static int
terminfo_func (char *arg, int flags)
{
if (*arg)
{
grub_memset (term, 0, sizeof (struct terminfo));
while (*arg)
{
//int i;
char *next = skip_to (0, arg);
nul_terminate (arg);
for (i = 0; i < sizeof (options) / sizeof (options[0]); i++)
{
const char *name = options[i].name;
int len = grub_strlen (name);
if (! grub_memcmp (arg, name, len))
{
grub_strcpy (options[i].var, ti_unescape_string (arg + len));
break;
}
}
if (i == sizeof (options) / sizeof (options[0]))
{
errnum = ERR_BAD_ARGUMENT;
return errnum;
}
arg = next;
}
if (term->name[0] == 0 || term->cursor_address[0] == 0)
{
errnum = ERR_BAD_ARGUMENT;
return errnum;
}
ti_set_term (term);
}
else
{
/* No option specifies printing out current settings. */
ti_get_term (term);
grub_printf ("name=%s\n",
ti_escape_string (term->name));
grub_printf ("cursor_address=%s\n",
ti_escape_string (term->cursor_address));
grub_printf ("clear_screen=%s\n",
ti_escape_string (term->clear_screen));
grub_printf ("enter_standout_mode=%s\n",
ti_escape_string (term->enter_standout_mode));
grub_printf ("exit_standout_mode=%s\n",
ti_escape_string (term->exit_standout_mode));
}
return 0;
}
static struct builtin builtin_terminfo =
{
"terminfo",
terminfo_func,
BUILTIN_MENU | BUILTIN_CMDLINE | BUILTIN_HELP_LIST,
"terminfo [--name=NAME --cursor-address=SEQ [--clear-screen=SEQ]"
"\n [--enter-standout-mode=SEQ] [--exit-standout-mode=SEQ]]",
"Define the capabilities of your terminal. Use this command to"
" define escape sequences, if it is not vt100-compatible."
" You may use \\e for ESC and ^X for a control character."
" If no option is specified, the current settings are printed."
};
#endif /* SUPPORT_SERIAL */
/* testload */
static int
testload_func (char *arg, int flags)
{
//int i;
kernel_type = KERNEL_TYPE_NONE;
if (! grub_open (arg))
return 1;
disk_read_hook = disk_read_print_func;
/* Perform filesystem test on the specified file. */
/* Read whole file first. */
grub_printf ("Whole file: ");
grub_read ((char *) RAW_ADDR (0x300000), -1);
/* Now compare two sections of the file read differently. */
for (i = 0; i < 0x10ac0; i++)
{
*((unsigned char *) RAW_ADDR (0x400000 + i)) = 0;
*((unsigned char *) RAW_ADDR (0x500000 + i)) = 1;
}
/* First partial read. */
grub_printf ("\nPartial read 1: ");
filepos = 0;
grub_read ((char *) RAW_ADDR (0x400000), 0x7);
grub_read ((char *) RAW_ADDR (0x400007), 0x100);
grub_read ((char *) RAW_ADDR (0x400107), 0x10);
grub_read ((char *) RAW_ADDR (0x400117), 0x999);
grub_read ((char *) RAW_ADDR (0x400ab0), 0x10);
grub_read ((char *) RAW_ADDR (0x400ac0), 0x10000);
/* Second partial read. */
grub_printf ("\nPartial read 2: ");
filepos = 0;
grub_read ((char *) RAW_ADDR (0x500000), 0x10000);
grub_read ((char *) RAW_ADDR (0x510000), 0x10);
grub_read ((char *) RAW_ADDR (0x510010), 0x7);
grub_read ((char *) RAW_ADDR (0x510017), 0x10);
grub_read ((char *) RAW_ADDR (0x510027), 0x999);
grub_read ((char *) RAW_ADDR (0x5109c0), 0x100);
grub_printf ("\nHeader1 = 0x%x, next = 0x%x, next = 0x%x, next = 0x%x\n",
*((int *) RAW_ADDR (0x400000)),
*((int *) RAW_ADDR (0x400004)),
*((int *) RAW_ADDR (0x400008)),
*((int *) RAW_ADDR (0x40000c)));
grub_printf ("Header2 = 0x%x, next = 0x%x, next = 0x%x, next = 0x%x\n",
*((int *) RAW_ADDR (0x500000)),
*((int *) RAW_ADDR (0x500004)),
*((int *) RAW_ADDR (0x500008)),
*((int *) RAW_ADDR (0x50000c)));
for (i = 0; i < 0x10ac0; i++)
if (*((unsigned char *) RAW_ADDR (0x400000 + i))
!= *((unsigned char *) RAW_ADDR (0x500000 + i)))
break;
grub_printf ("Max is 0x10ac0: i=0x%x, filepos=0x%x\n", i, filepos);
disk_read_hook = 0;
grub_close ();
return 0;
}
static struct builtin builtin_testload =
{
"testload",
testload_func,
BUILTIN_MENU | BUILTIN_CMDLINE,
"testload FILE",
"Read the entire contents of FILE in several different ways and"
" compares them, to test the filesystem code. The output is somewhat"
" cryptic, but if no errors are reported and the final `i=X,"
" filepos=Y' reading has X and Y equal, then it is definitely"
" consistent, and very likely works correctly subject to a"
" consistent offset error. If this test succeeds, then a good next"
" step is to try loading a kernel."
};
#ifdef GRUB_UTIL
static struct vbe_controller controller1; //struct size 512
static struct vbe_mode mode1; //struct size 255
static struct vbe_controller *controller = &controller1;
static struct vbe_mode *mode = &mode1;
#else
static struct vbe_controller *controller = (struct vbe_controller *)0x8000;//use 512 bytes
static struct vbe_mode *mode = (struct vbe_mode *)0x700;//use 255 bytes
#endif
/* testvbe MODE */
static int
testvbe_func (char *arg, int flags)
{
int mode_number;
// struct vbe_controller controller; //struct size 512
// struct vbe_mode mode; //struct size 255
if (! *arg)
{
errnum = ERR_BAD_ARGUMENT;
return 1;
}
if (! safe_parse_maxint (&arg, &mode_number))
return 1;
/* Preset `VBE2'. */
grub_memmove (controller->signature, "VBE2", 4);
/* Detect VBE BIOS. */
if (get_vbe_controller_info (controller) != 0x004F)
{
grub_printf (" VBE BIOS is not present.\n");
return 0;
}
if (controller->version < 0x0200)
{
grub_printf (" VBE version %d.%d is not supported.\n",
(int) (controller->version >> 8),
(int) (controller->version & 0xFF));
return 0;
}
if (get_vbe_mode_info (mode_number, mode) != 0x004F
|| (mode->mode_attributes & 0x0091) != 0x0091)
{
grub_printf (" Mode 0x%x is not supported.\n", mode_number);
return 0;
}
/* Now trip to the graphics mode. */
if (set_vbe_mode (mode_number | (1 << 14)) != 0x004F)
{
grub_printf (" Switching to Mode 0x%x failed.\n", mode_number);
return 0;
}
/* Draw something on the screen... */
{
unsigned char *base_buf = (unsigned char *) mode->phys_base;
int scanline = controller->version >= 0x0300
? mode->linear_bytes_per_scanline : mode->bytes_per_scanline;
/* FIXME: this assumes that any depth is a modulo of 8. */
int bpp = mode->bits_per_pixel / 8;
int width = mode->x_resolution;
int height = mode->y_resolution;
int x, y;
unsigned color = 0;
/* Iterate drawing on the screen, until the user hits any key. */
while (checkkey () == -1)
{
for (y = 0; y < height; y++)
{
unsigned char *line_buf = base_buf + scanline * y;
for (x = 0; x < width; x++)
{
unsigned char *buf = line_buf + bpp * x;
//int i;
for (i = 0; i < bpp; i++, buf++)
*buf = (color >> (i * 8)) & 0xff;
}
color++;
}
}
/* Discard the input. */
getkey ();
}
/* Back to the default text mode. */
if (set_vbe_mode (0x03) != 0x004F)
{
#if 1
grub_printf ("\nSwitching to text mode failed!!\n");
return 1;
#else
/* Why?! */
grub_reboot ();
#endif
}
return 0;
}
static struct builtin builtin_testvbe =
{
"testvbe",
testvbe_func,
BUILTIN_MENU | BUILTIN_CMDLINE | BUILTIN_HELP_LIST,
"testvbe MODE",
"Test the VBE mode MODE. Hit any key to return."
};
static inline unsigned long vbe_far_ptr_to_linear (unsigned long ptr)
{
unsigned short seg = (ptr >> 16);
unsigned short off = (ptr & 0xFFFF);
return (seg << 4) + off;
}
static struct vbe_mode *
find_video_mode(/*struct vbe_controller *controller,*/ int width, int height, int depth, int *mode_number)
{
// if height == depth == 0, then width is not a width but a mode number
// static struct vbe_mode mode;
// int i;
if (!height && !depth) {
if (get_vbe_mode_info (width, mode) == 0x004F)
if ((mode->mode_attributes & 0x0091) == 0x0091) {
*mode_number = width;
return mode;
}
}
for (i = 0; i<0x200; i++)
{
if (get_vbe_mode_info (i, mode) != 0x004F)
continue;
/* Skip this, if this is not supported or linear frame buffer
mode is not support. */
if ((mode->mode_attributes & 0x0091) != 0x0091)
continue;
printf("Mode (0x%x) %dx%dx%d %x %x\n",
i,
mode->x_resolution,
mode->y_resolution,
mode->bits_per_pixel,
mode->mode_attributes,
mode->phys_base);
if ((mode->x_resolution == width) &&
(mode->y_resolution == height) &&
(mode->bits_per_pixel == depth)) {
*mode_number = i;
return mode;
}
}
return NULL;
}
/* setvbe (Contributed by Gerardo Richarte. Thanks!) */
/* set the `video=' option for the next `kernel' command. */
static int
setvbe_func (char *arg, int flags)
{
int mode_number;
int width = 10000;
int height = 10000;
int depth = 128;
// struct vbe_controller controller; //struct size 512
// struct vbe_mode mode; //struct size 255
struct vbe_mode *mode2;
if (!*arg)
return 1;
errnum = ERR_BAD_ARGUMENT;
if (! safe_parse_maxint (&arg, &width))
return 1;
if (*arg == 'x') {
arg++;
if (! safe_parse_maxint (&arg, &height))
return 1;
arg++;
if (! safe_parse_maxint (&arg, &depth))
return 1;
} else {
height = depth = 0;
}
grub_printf ("Trying setvbe for resolution %dx%dx%d\n", width, height, depth);
/* Preset `VBE2'. */
grub_memmove (controller->signature, "VBE2", 4);
/* Detect VBE BIOS. */
if (get_vbe_controller_info (controller) != 0x004F)
{
grub_printf (" VBE BIOS is not present.\n");
return 1;
}
if (controller->version < 0x0200)
{
grub_printf (" VBE version %d.%d is not supported.\n",
(int) (controller->version >> 8),
(int) (controller->version & 0xFF));
return 1;
}
mode2 = find_video_mode(/*controller,*/ width, height, depth, &mode_number);
if (!mode2)
{
grub_printf (" Resolution %dx%dx%d not found. Try vbeprobe command to see available modes\n", width, height, depth);
return 1;
}
/* Now trip to the graphics mode. */
if (set_vbe_mode (mode_number | (1 << 14)) != 0x004F)
{
grub_printf (" Switching to Mode 0x%x failed.\n", mode_number);
return 1;
}
grub_sprintf (kernel_option_video, " video=%dx%dx%d@0x%x,%d", mode2->x_resolution, mode2->y_resolution, mode2->bits_per_pixel, mode2->phys_base, (controller->version >= 0x0300) ? (mode2->linear_bytes_per_scanline) : (mode2->bytes_per_scanline));
grub_printf ("\nThe option \"%s\" will be automatically\nappended to each subsequent kernel command-line.\n", kernel_option_video);
errnum = 0;
return 0;
}
static struct builtin builtin_setvbe =
{
"setvbe",
setvbe_func,
BUILTIN_CMDLINE | BUILTIN_MENU | BUILTIN_HELP_LIST,
"setvbe MODE_3D",
"Set the VBE mode MODE_3D(which is of the form 1024x768x32) for each subsequent kernel command-line."
};
#ifdef SUPPORT_NETBOOT
/* tftpserver */
static int
tftpserver_func (char *arg, int flags)
{
if (! *arg || ! ifconfig (0, 0, 0, arg))
{
errnum = ERR_BAD_ARGUMENT;
return 1;
}
print_network_configuration ();
return 0;
}
static struct builtin builtin_tftpserver =
{
"tftpserver",
tftpserver_func,
BUILTIN_CMDLINE | BUILTIN_MENU | BUILTIN_HELP_LIST,
"tftpserver IPADDR",
"Override the TFTP server address."
};
#endif /* SUPPORT_NETBOOT */
/* timeout */
static int
timeout_func (char *arg, int flags)
{
if (! safe_parse_maxint (&arg, &grub_timeout))
return 1;
return 0;
}
static struct builtin builtin_timeout =
{
"timeout",
timeout_func,
BUILTIN_MENU,
#if 0
"timeout SEC",
"Set a timeout, in SEC seconds, before automatically booting the"
" default entry (normally the first entry defined)."
#endif
};
/* title */
static int
title_func (char *arg, int flags)
{
/* This function is not actually used at least currently. */
return 0;
}
static struct builtin builtin_title =
{
"title",
title_func,
BUILTIN_TITLE,
#if 0
"title [NAME ...]",
"Start a new boot entry, and set its name to the contents of the"
" rest of the line, starting with the first non-space character."
#endif
};
/* unhide */
static int
unhide_func (char *arg, int flags)
{
/* If no arguments, unhide current partition in the current drive. */
if (! *arg || *arg == ' ' || *arg == '\t')
{
current_drive = saved_drive;
current_partition = saved_partition;
}
else if (! set_device (arg))
return 1;
if (! set_partition_hidden_flag (0))
return 1;
return 0;
}
static struct builtin builtin_unhide =
{
"unhide",
unhide_func,
BUILTIN_CMDLINE | BUILTIN_MENU | BUILTIN_HELP_LIST,
"unhide [PARTITION]",
"Unhide PARTITION by clearing the \"hidden\" bit in its"
" partition type code. The default partition is the current"
" root device."
};
/* uppermem */
static int
uppermem_func (char *arg, int flags)
{
if (! safe_parse_maxint (&arg, (int *)(void *) &mbi.mem_upper))
return 1;
mbi.flags &= ~MB_INFO_MEM_MAP;
return 0;
}
static struct builtin builtin_uppermem =
{
"uppermem",
uppermem_func,
BUILTIN_MENU | BUILTIN_CMDLINE | BUILTIN_HELP_LIST,
"uppermem KBYTES",
"Force GRUB to assume that only KBYTES kilobytes of upper memory are"
" installed. Any system address range maps are discarded."
};
/* vbeprobe */
static int
vbeprobe_func (char *arg, int flags)
{
// struct vbe_controller controller; //struct size 512
unsigned short *mode_list;
int mode_number = -1;
if (*arg)
{
if (! safe_parse_maxint (&arg, &mode_number))
return 1;
}
/* Set the signature to `VBE2', to obtain VBE 3.0 information. */
grub_memmove (controller->signature, "VBE2", 4);
if (get_vbe_controller_info (controller) != 0x004F)
{
grub_printf (" VBE BIOS is not present.\n");
return 0;
}
/* Check the version. */
if (controller->version < 0x0200)
{
grub_printf (" VBE version %d.%d is not supported.\n",
(int) (controller->version >> 8),
(int) (controller->version & 0xFF));
return 0;
}
/* Print some information. */
grub_printf (" VBE version %d.%d\n",
(int) (controller->version >> 8),
(int) (controller->version & 0xFF));
/* Iterate probing modes. */
for (mode_list
= (unsigned short *) vbe_far_ptr_to_linear (controller->video_mode);
*mode_list != 0xFFFF;
mode_list++)
{
// struct vbe_mode mode; //struct size 255
if (get_vbe_mode_info (*mode_list, mode) != 0x004F)
continue;
/* Skip this, if this is not supported or linear frame buffer
mode is not support. */
if ((mode->mode_attributes & 0x0081) != 0x0081)
continue;
if (mode_number == -1 || mode_number == *mode_list)
{
char *model;
switch (mode->memory_model)
{
case 0x00: model = "Text"; break;
case 0x01: model = "CGA graphics"; break;
case 0x02: model = "Hercules graphics"; break;
case 0x03: model = "Planar"; break;
case 0x04: model = "Packed pixel"; break;
case 0x05: model = "Non-chain 4, 256 color"; break;
case 0x06: model = "Direct Color"; break;
case 0x07: model = "YUV"; break;
default: model = "Unknown"; break;
}
grub_printf (" 0x%x: %s, %ux%ux%u\n",
(unsigned) *mode_list,
model,
(unsigned) mode->x_resolution,
(unsigned) mode->y_resolution,
(unsigned) mode->bits_per_pixel);
if (mode_number != -1)
break;
}
}
if (mode_number != -1 && mode_number != *mode_list)
grub_printf (" Mode 0x%x is not found or supported.\n", mode_number);
return 0;
}
static struct builtin builtin_vbeprobe =
{
"vbeprobe",
vbeprobe_func,
BUILTIN_MENU | BUILTIN_CMDLINE | BUILTIN_HELP_LIST,
"vbeprobe [MODE]",
"Probe VBE information. If the mode number MODE is specified, show only"
" the information about only the mode."
};
/* The table of builtin commands. Sorted in dictionary order. */
struct builtin *builtin_table[] =
{
#ifdef SUPPORT_GRAPHICS
&builtin_background,
#endif
&builtin_blocklist,
#ifndef GRUB_UTIL
&builtin_boot,
#ifdef SUPPORT_NETBOOT
&builtin_bootp,
#endif /* SUPPORT_NETBOOT */
#endif /* ! GRUB_UTIL */
&builtin_cat,
#if ! defined(GRUB_UTIL) && ! defined (STAGE1_5)
&builtin_cdrom,
#endif
&builtin_chainloader,
&builtin_clear,
&builtin_cmp,
&builtin_color,
&builtin_commandline,
&builtin_configfile,
&builtin_debug,
&builtin_default,
#ifdef GRUB_UTIL
&builtin_device,
#endif /* GRUB_UTIL */
#ifdef SUPPORT_NETBOOT
&builtin_dhcp,
#endif /* SUPPORT_NETBOOT */
&builtin_displayapm,
&builtin_displaymem,
#ifdef GRUB_UTIL
&builtin_dump,
#endif /* GRUB_UTIL */
&builtin_embed,
&builtin_errnum,
&builtin_errorcheck,
&builtin_fallback,
&builtin_find,
#ifdef SUPPORT_GRAPHICS
&builtin_foreground,
#endif
&builtin_fstest,
&builtin_geometry,
&builtin_halt,
&builtin_help,
&builtin_hiddenmenu,
&builtin_hide,
#ifdef SUPPORT_NETBOOT
&builtin_ifconfig,
#endif /* SUPPORT_NETBOOT */
&builtin_impsprobe,
&builtin_initrd,
&builtin_install,
&builtin_ioprobe,
&builtin_is64bit,
&builtin_kernel,
&builtin_lock,
&builtin_makeactive,
#ifndef GRUB_UTIL
&builtin_map,
#endif /* ! GRUB_UTIL */
#ifdef USE_MD5_PASSWORDS
&builtin_md5crypt,
#endif /* USE_MD5_PASSWORDS */
&builtin_module,
&builtin_modulenounzip,
&builtin_pager,
&builtin_partnew,
&builtin_parttype,
&builtin_password,
&builtin_pause,
#ifdef FSYS_PXE
&builtin_pxe,
#endif
//#ifdef GRUB_UTIL
&builtin_quit,
//#endif /* GRUB_UTIL */
#ifndef GRUB_UTIL
#ifdef SUPPORT_NETBOOT
&builtin_rarp,
#endif /* SUPPORT_NETBOOT */
&builtin_read,
&builtin_reboot,
#endif /* ! GRUB_UTIL */
&builtin_root,
&builtin_rootnoverify,
&builtin_savedefault,
#ifdef SUPPORT_SERIAL
&builtin_serial,
#endif /* SUPPORT_SERIAL */
&builtin_setkey,
&builtin_setup,
&builtin_setvbe,
#ifdef SUPPORT_GRAPHICS
&builtin_splashimage,
#endif /* SUPPORT_GRAPHICS */
#if defined(SUPPORT_SERIAL) || defined(SUPPORT_HERCULES) || defined(SUPPORT_GRAPHICS)
&builtin_terminal,
#endif /* SUPPORT_SERIAL || SUPPORT_HERCULES SUPPORT_GRAPHICS */
#ifdef SUPPORT_SERIAL
&builtin_terminfo,
#endif /* SUPPORT_SERIAL */
&builtin_testload,
&builtin_testvbe,
#ifdef SUPPORT_NETBOOT
&builtin_tftpserver,
#endif /* SUPPORT_NETBOOT */
&builtin_timeout,
&builtin_title,
&builtin_unhide,
&builtin_uppermem,
&builtin_vbeprobe,
#ifndef GRUB_UTIL
&builtin_write,
#endif /* ! GRUB_UTIL */
0
};