| /* |
| * Yaboot - secondary boot loader for Linux on PowerPC. |
| * |
| * Copyright (C) 2001, 2002 Ethan Benson |
| * |
| * Copyright (C) 1999, 2000, 2001 Benjamin Herrenschmidt |
| * |
| * IBM CHRP support |
| * |
| * Copyright (C) 2001 Peter Bergner |
| * |
| * portions based on poof |
| * |
| * Copyright (C) 1999 Marius Vollmer |
| * |
| * portions based on quik |
| * |
| * Copyright (C) 1996 Paul Mackerras. |
| * |
| * Because this program is derived from the corresponding file in the |
| * silo-0.64 distribution, it is also |
| * |
| * Copyright (C) 1996 Pete A. Zaitcev |
| * 1996 Maurizio Plaza |
| * 1996 David S. Miller |
| * 1996 Miguel de Icaza |
| * 1996 Jakub Jelinek |
| * |
| * 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| */ |
| |
| #include "stdarg.h" |
| #include "string.h" |
| #include "ctype.h" |
| #include "stdlib.h" |
| #include "prom.h" |
| #include "file.h" |
| #include "errors.h" |
| #include "cfg.h" |
| #include "cmdline.h" |
| #include "yaboot.h" |
| #include "linux/elf.h" |
| #include "bootinfo.h" |
| #include "debug.h" |
| |
| #define CONFIG_FILE_NAME "yaboot.conf" |
| #define CONFIG_FILE_MAX 0x8000 /* 32k */ |
| |
| #ifdef USE_MD5_PASSWORDS |
| #include "md5.h" |
| #endif /* USE_MD5_PASSWORDS */ |
| |
| /* align addr on a size boundry - adjust address up if needed -- Cort */ |
| #define _ALIGN(addr,size) (((addr)+size-1)&(~(size-1))) |
| |
| /* Addresses where the PPC32 and PPC64 vmlinux kernels are linked at. |
| * These are used to determine whether we are booting a vmlinux, in |
| * which case, it will be loaded at KERNELADDR. Otherwise (eg zImage), |
| * we load the binary where it was linked at (ie, e_entry field in |
| * the ELF header). |
| */ |
| #define KERNEL_LINK_ADDR_PPC32 0xC0000000UL |
| #define KERNEL_LINK_ADDR_PPC64 0xC000000000000000ULL |
| |
| typedef struct { |
| union { |
| Elf32_Ehdr elf32hdr; |
| Elf64_Ehdr elf64hdr; |
| } elf; |
| void* base; |
| unsigned long memsize; |
| unsigned long filesize; |
| unsigned long offset; |
| unsigned long load_loc; |
| unsigned long entry; |
| } loadinfo_t; |
| |
| typedef void (*kernel_entry_t)( void *, |
| unsigned long, |
| prom_entry, |
| unsigned long, |
| unsigned long ); |
| |
| /* Imported functions */ |
| extern unsigned long reloc_offset(void); |
| extern long flush_icache_range(unsigned long start, unsigned long stop); |
| |
| /* Exported functions */ |
| int yaboot_start(unsigned long r3, unsigned long r4, unsigned long r5); |
| |
| /* Local functions */ |
| static int yaboot_main(void); |
| static int is_elf32(loadinfo_t *loadinfo); |
| static int is_elf64(loadinfo_t *loadinfo); |
| static int load_elf32(struct boot_file_t *file, loadinfo_t *loadinfo); |
| static int load_elf64(struct boot_file_t *file, loadinfo_t *loadinfo); |
| static void setup_display(void); |
| |
| /* Locals & globals */ |
| |
| int useconf = 0; |
| char bootdevice[BOOTDEVSZ]; |
| char bootoncelabel[1024]; |
| char bootargs[1024]; |
| char bootlastlabel[BOOTLASTSZ] = {0}; |
| char fw_nbr_reboots[FW_NBR_REBOOTSZ] = {0}; |
| long fw_reboot_cnt = 0; |
| char *password = NULL; |
| struct boot_fspec_t boot; |
| int _machine = _MACH_Pmac; |
| int flat_vmlinux; |
| |
| #ifdef CONFIG_COLOR_TEXT |
| |
| /* Color values for text ui */ |
| static struct ansi_color_t { |
| char* name; |
| int index; |
| int value; |
| } ansi_color_table[] = { |
| { "black", 2, 30 }, |
| { "blue", 0, 31 }, |
| { "green", 0, 32 }, |
| { "cyan", 0, 33 }, |
| { "red", 0, 34 }, |
| { "purple", 0, 35 }, |
| { "brown", 0, 36 }, |
| { "light-gray", 0, 37 }, |
| { "dark-gray", 1, 30 }, |
| { "light-blue", 1, 31 }, |
| { "light-green", 1, 32 }, |
| { "light-cyan", 1, 33 }, |
| { "light-red", 1, 34 }, |
| { "light-purple", 1, 35 }, |
| { "yellow", 1, 36 }, |
| { "white", 1, 37 }, |
| { NULL, 0, 0 }, |
| }; |
| |
| /* Default colors for text ui */ |
| int fgcolor = 15; |
| int bgcolor = 0; |
| #endif /* CONFIG_COLOR_TEXT */ |
| |
| #if DEBUG |
| static int test_bss; |
| static int test_data = 0; |
| #endif |
| static int pause_after; |
| static char *pause_message = "Type go<return> to continue.\n"; |
| static char given_bootargs[1024]; |
| static int given_bootargs_by_user = 0; |
| |
| extern unsigned char linux_logo_red[]; |
| extern unsigned char linux_logo_green[]; |
| extern unsigned char linux_logo_blue[]; |
| |
| #define DEFAULT_TIMEOUT -1 |
| |
| /* Entry, currently called directly by crt0 (bss not inited) */ |
| |
| extern char* __bss_start; |
| extern char* _end; |
| |
| static struct first_info *quik_fip = NULL; |
| |
| int |
| yaboot_start (unsigned long r3, unsigned long r4, unsigned long r5) |
| { |
| int result; |
| void* malloc_base = NULL; |
| unsigned long addr; |
| prom_handle root; |
| |
| /* OF seems to do it, but I'm not very confident */ |
| memset(&__bss_start, 0, &_end - &__bss_start); |
| |
| /* Check for quik first stage bootloader (but I don't think we are |
| * compatible with it anyway, I'll look into backporting to older OF |
| * versions later |
| */ |
| if (r5 == 0xdeadbeef) { |
| r5 = r3; |
| quik_fip = (struct first_info *)r4; |
| } |
| |
| /* Initialize OF interface */ |
| prom_init ((prom_entry) r5); |
| |
| /* Allocate some memory for malloc'ator */ |
| for (addr = MALLOCADDR; addr <= MALLOCADDR * 16 ;addr+=0x100000) { |
| malloc_base = prom_claim((void *)addr, MALLOCSIZE, 0); |
| if (malloc_base != (void *)-1) break; |
| } |
| if (malloc_base == (void *)-1) { |
| prom_printf("Can't claim malloc buffer (%d bytes at 0x%08x)\n", |
| MALLOCSIZE, MALLOCADDR); |
| return -1; |
| } |
| malloc_init(malloc_base, MALLOCSIZE); |
| DEBUG_F("Malloc buffer allocated at %p (%d bytes)\n", |
| malloc_base, MALLOCSIZE); |
| |
| /* A few useless DEBUG_F's */ |
| DEBUG_F("reloc_offset : %ld (should be 0)\n", reloc_offset()); |
| DEBUG_F("test_bss : %d (should be 0)\n", test_bss); |
| DEBUG_F("test_data : %d (should be 0)\n", test_data); |
| DEBUG_F("&test_data : %p\n", &test_data); |
| DEBUG_F("&test_bss : %p\n", &test_bss); |
| DEBUG_F("linked at : 0x%08x\n", TEXTADDR); |
| |
| /* ask the OF info if we're a chrp or pmac */ |
| /* we need to set _machine before calling finish_device_tree */ |
| root = prom_finddevice("/"); |
| if (root != 0) { |
| static char model[256]; |
| if (prom_getprop(root, "CODEGEN,vendor", model, 256) > 0 && |
| !strncmp("bplan", model, 5)) |
| _machine = _MACH_bplan; |
| else if (prom_getprop(root, "device_type", model, 256 ) > 0 && |
| !strncmp("chrp", model, 4)) |
| _machine = _MACH_chrp; |
| else { |
| if (prom_getprop(root, "model", model, 256 ) > 0 && |
| !strncmp(model, "IBM", 3)) |
| _machine = _MACH_chrp; |
| } |
| } |
| |
| DEBUG_F("Running on _machine = %d\n", _machine); |
| DEBUG_SLEEP; |
| |
| /* Call out main */ |
| result = yaboot_main(); |
| |
| /* Get rid of malloc pool */ |
| malloc_dispose(); |
| prom_release(malloc_base, MALLOCSIZE); |
| DEBUG_F("Malloc buffer released. Exiting with code %d\n", |
| result); |
| |
| /* Return to OF */ |
| prom_exit(); |
| |
| return result; |
| |
| } |
| |
| #ifdef CONFIG_COLOR_TEXT |
| /* |
| * Validify color for text ui |
| */ |
| static int |
| check_color_text_ui(char *color) |
| { |
| int i = 0; |
| while(ansi_color_table[i].name) { |
| if (!strcmp(color, ansi_color_table[i].name)) |
| return i; |
| i++; |
| } |
| return -1; |
| } |
| #endif /* CONFIG_COLOR_TEXT */ |
| |
| |
| void print_message_file(char *filename) |
| { |
| char *msg = NULL; |
| char *p, *endp; |
| char *defdev = boot.dev; |
| int defpart = boot.part; |
| char msgpath[1024]; |
| int opened = 0; |
| int result = 0; |
| int n; |
| struct boot_file_t file; |
| struct boot_fspec_t msgfile; |
| |
| defdev = cfg_get_strg(0, "device"); |
| if (!defdev) |
| defdev = boot.dev; |
| p = cfg_get_strg(0, "partition"); |
| if (p) { |
| n = simple_strtol(p, &endp, 10); |
| if (endp != p && *endp == 0) |
| defpart = n; |
| } |
| |
| strncpy(msgpath, filename, sizeof(msgpath)); |
| if (!parse_device_path(msgpath, defdev, defpart, "/etc/yaboot.msg", &msgfile)) { |
| prom_printf("%s: Unable to parse\n", msgpath); |
| goto done; |
| } |
| |
| result = open_file(&msgfile, &file); |
| if (result != FILE_ERR_OK) { |
| prom_printf("%s:%d,", msgfile.dev, msgfile.part); |
| prom_perror(result, msgfile.file); |
| goto done; |
| } else |
| opened = 1; |
| |
| msg = malloc(2001); |
| if (!msg) |
| goto done; |
| else |
| memset(msg, 0, 2001); |
| |
| if (file.fs->read(&file, 2000, msg) <= 0) |
| goto done; |
| else |
| prom_printf("%s", msg); |
| |
| done: |
| if (opened) |
| file.fs->close(&file); |
| if (msg) |
| free(msg); |
| } |
| |
| /* Currently, the config file must be at the root of the filesystem. |
| * todo: recognize the full path to myself and use it to load the |
| * config file. Handle the "\\" (blessed system folder) |
| */ |
| static int |
| load_config_file(struct boot_fspec_t *fspec) |
| { |
| char *conf_file = NULL, *p; |
| struct boot_file_t file; |
| int sz, opened = 0, result = 0; |
| |
| /* Allocate a buffer for the config file */ |
| conf_file = malloc(CONFIG_FILE_MAX); |
| if (!conf_file) { |
| prom_printf("Can't alloc config file buffer\n"); |
| goto bail; |
| } |
| |
| /* Open it */ |
| result = open_file(fspec, &file); |
| if (result != FILE_ERR_OK) { |
| prom_printf("%s:%d,", fspec->dev, fspec->part); |
| prom_perror(result, fspec->file); |
| prom_printf("Can't open config file\n"); |
| goto bail; |
| } |
| opened = 1; |
| |
| /* Read it */ |
| sz = file.fs->read(&file, CONFIG_FILE_MAX, conf_file); |
| if (sz <= 0) { |
| prom_printf("Error, can't read config file\n"); |
| goto bail; |
| } |
| prom_printf("Config file read, %d bytes\n", sz); |
| |
| /* Close the file */ |
| if (opened) |
| file.fs->close(&file); |
| opened = 0; |
| |
| /* Call the parsing code in cfg.c */ |
| if (cfg_parse(fspec->file, conf_file, sz) < 0) { |
| prom_printf ("Syntax error or read error config\n"); |
| goto bail; |
| } |
| |
| /* |
| * set the default cf_option to label that has the same MAC addr |
| * it only works if there is a label with the MAC addr on yaboot.conf |
| */ |
| if (prom_get_devtype(fspec->dev) == FILE_DEVICE_NET) { |
| /* change the variable bellow to get the MAC dinamicaly */ |
| char * macaddr = NULL; |
| int default_mac = 0; |
| |
| macaddr = prom_get_mac(prom_get_netinfo()); |
| default_mac = cfg_set_default_by_mac(macaddr); |
| if (default_mac >= 1) { |
| prom_printf("Default label was changed to macaddr label.\n"); |
| } |
| } |
| |
| DEBUG_F("Config file successfully parsed, %d bytes\n", sz); |
| |
| /* Now, we do the initialisations stored in the config file */ |
| p = cfg_get_strg(0, "init-code"); |
| if (p) |
| prom_interpret(p); |
| |
| password = cfg_get_strg(0, "password"); |
| |
| #ifdef CONFIG_COLOR_TEXT |
| p = cfg_get_strg(0, "fgcolor"); |
| if (p) { |
| DEBUG_F("fgcolor=%s\n", p); |
| fgcolor = check_color_text_ui(p); |
| if (fgcolor == -1) { |
| prom_printf("Invalid fgcolor: \"%s\".\n", p); |
| } |
| } |
| p = cfg_get_strg(0, "bgcolor"); |
| if (p) { |
| DEBUG_F("bgcolor=%s\n", p); |
| bgcolor = check_color_text_ui(p); |
| if (bgcolor == -1) |
| prom_printf("Invalid bgcolor: \"%s\".\n", p); |
| } |
| if (bgcolor >= 0) { |
| char temp[64]; |
| sprintf(temp, "%x to background-color", bgcolor); |
| prom_interpret(temp); |
| #if !DEBUG |
| prom_printf("\xc"); |
| #endif /* !DEBUG */ |
| } |
| if (fgcolor >= 0) { |
| char temp[64]; |
| sprintf(temp, "%x to foreground-color", fgcolor); |
| prom_interpret(temp); |
| } |
| #endif /* CONFIG_COLOR_TEXT */ |
| |
| p = cfg_get_strg(0, "init-message"); |
| if (p) |
| prom_printf("%s\n", p); |
| |
| p = cfg_get_strg(0, "message"); |
| if (p) |
| print_message_file(p); |
| |
| result = 1; |
| |
| bail: |
| |
| if (opened) |
| file.fs->close(&file); |
| |
| if (conf_file) |
| free(conf_file); |
| |
| return result; |
| } |
| |
| /* |
| * Search for config file by MAC address, then by IP address. |
| * Basically copying pxelinux's algorithm. |
| * http://syslinux.zytor.com/pxe.php#config |
| */ |
| static int load_my_config_file(struct boot_fspec_t *orig_fspec) |
| { |
| struct bootp_packet *packet; |
| int rc = 0; |
| struct boot_fspec_t fspec = *orig_fspec; |
| char *cfgpath = (_machine == _MACH_chrp || _machine == _MACH_bplan) ? "/etc/" : ""; |
| int flen; |
| int minlen; |
| |
| packet = prom_get_netinfo(); |
| |
| /* |
| * First, try to match on mac address with the hardware type |
| * prepended. |
| */ |
| |
| /* 3 chars per byte in chaddr + 2 chars for htype + /etc/ +\0 */ |
| fspec.file = malloc(packet->hlen * 3 + 2 + 6); |
| if (!fspec.file) |
| goto out; |
| |
| sprintf(fspec.file, "%s%02x-", cfgpath, packet->htype); |
| strcat(fspec.file, prom_get_mac(packet)); |
| |
| rc = load_config_file(&fspec); |
| if (rc) |
| goto out; |
| |
| /* |
| * Now try to match on IP. |
| */ |
| /* no need to realloc for /etc/ + 8 chars in yiaddr + \0 */ |
| sprintf(fspec.file, "%s%s", cfgpath, prom_get_ip(packet)); |
| |
| for (flen = strlen(fspec.file), |
| minlen = strlen(cfgpath); flen > minlen; flen--) { |
| rc = load_config_file(&fspec); |
| if (rc) |
| goto out; |
| /* Chop one digit off the end, try again */ |
| fspec.file[flen - 1] = '\0'; |
| } |
| |
| out: |
| if (rc) /* modify original only on success */ |
| orig_fspec->file = fspec.file; |
| else |
| free(fspec.file); |
| return rc; |
| } |
| |
| void maintabfunc (void) |
| { |
| if (useconf) { |
| cfg_print_images(); |
| prom_printf("boot: %s", cbuff); |
| } |
| } |
| |
| void |
| word_split(char **linep, char **paramsp) |
| { |
| char *p; |
| |
| *paramsp = 0; |
| p = *linep; |
| if (p == 0) |
| return; |
| while (*p == ' ') |
| ++p; |
| if (*p == 0) { |
| *linep = 0; |
| return; |
| } |
| *linep = p; |
| while (*p != 0 && *p != ' ') |
| ++p; |
| while (*p == ' ') |
| *p++ = 0; |
| if (*p != 0) |
| *paramsp = p; |
| } |
| |
| char * |
| make_params(char *label, char *params) |
| { |
| char *p, *q; |
| static char buffer[2048]; |
| |
| q = buffer; |
| *q = 0; |
| |
| p = cfg_get_strg(label, "literal"); |
| if (p) { |
| strcpy(q, p); |
| q = strchr(q, 0); |
| if (params) { |
| if (*p) |
| *q++ = ' '; |
| strcpy(q, params); |
| } |
| return buffer; |
| } |
| |
| p = cfg_get_strg(label, "root"); |
| if (p) { |
| strcpy (q, "root="); |
| strcpy (q + 5, p); |
| q = strchr (q, 0); |
| *q++ = ' '; |
| } |
| if (cfg_get_flag(label, "read-only")) { |
| strcpy (q, "ro "); |
| q += 3; |
| } |
| if (cfg_get_flag(label, "read-write")) { |
| strcpy (q, "rw "); |
| q += 3; |
| } |
| p = cfg_get_strg(label, "ramdisk"); |
| if (p) { |
| strcpy (q, "ramdisk="); |
| strcpy (q + 8, p); |
| q = strchr (q, 0); |
| *q++ = ' '; |
| } |
| p = cfg_get_strg(label, "initrd-size"); |
| if (p) { |
| strcpy (q, "ramdisk_size="); |
| strcpy (q + 13, p); |
| q = strchr (q, 0); |
| *q++ = ' '; |
| } |
| if (cfg_get_flag(label, "novideo")) { |
| strcpy (q, "video=ofonly"); |
| q = strchr (q, 0); |
| *q++ = ' '; |
| } |
| p = cfg_get_strg (label, "append"); |
| if (p) { |
| strcpy (q, p); |
| q = strchr (q, 0); |
| *q++ = ' '; |
| } |
| *q = 0; |
| pause_after = cfg_get_flag (label, "pause-after"); |
| p = cfg_get_strg(label, "pause-message"); |
| if (p) |
| pause_message = p; |
| if (params) |
| strcpy(q, params); |
| |
| return buffer; |
| } |
| |
| void check_password(char *str) |
| { |
| int i; |
| |
| prom_printf("\n%s", str); |
| for (i = 0; i < 3; i++) { |
| prom_printf ("\nPassword: "); |
| passwdbuff[0] = 0; |
| cmdedit ((void (*)(void)) 0, 1); |
| prom_printf ("\n"); |
| #ifdef USE_MD5_PASSWORDS |
| if (!strncmp (password, "$1$", 3)) { |
| if (!check_md5_password(passwdbuff, password)) |
| return; |
| } |
| else if (!strcmp (password, passwdbuff)) |
| return; |
| #else /* !MD5 */ |
| if (!strcmp (password, passwdbuff)) |
| return; |
| #endif /* USE_MD5_PASSWORDS */ |
| if (i < 2) { |
| prom_sleep(1); |
| prom_printf ("Incorrect password. Try again."); |
| } |
| } |
| prom_printf(" ___________________\n< Permission denied >\n -------------------\n" |
| " \\ ^__^\n \\ (oo)\\_______\n (__)\\ )\\/\\\n" |
| " ||----w |\n || ||\n"); |
| prom_sleep(4); |
| prom_interpret("reset-all"); |
| } |
| |
| int get_params(struct boot_param_t* params) |
| { |
| int defpart; |
| char *defdevice = 0; |
| char defdevice_bak[1024]; |
| char *p, *q, *endp; |
| int c, n; |
| char *imagename = 0, *label; |
| int timeout = -1; |
| int beg = 0, end; |
| int singlekey = 0; |
| int restricted = 0; |
| static int first = 1; |
| static char imagepath[1024]; |
| static char initrdpath[1024]; |
| static char sysmappath[1024]; |
| static char manualinitrd[1024]; |
| static int definitrd = 1, hasarg = 0; |
| |
| pause_after = 0; |
| memset(params, 0, sizeof(*params)); |
| params->args = ""; |
| params->kernel.part = -1; |
| params->rd.part = -1; |
| params->sysmap.part = -1; |
| defpart = boot.part; |
| |
| cmdinit(); |
| |
| if (first && !fw_reboot_cnt) { |
| first = 0; |
| imagename = bootargs; |
| word_split(&imagename, ¶ms->args); |
| timeout = DEFAULT_TIMEOUT; |
| if (imagename) { |
| prom_printf("Default supplied on the command line: %s ", imagename); |
| if (params->args) |
| prom_printf("%s", params->args); |
| prom_printf("\n"); |
| } |
| if (useconf && (q = cfg_get_strg(0, "timeout")) != 0 && *q != 0) |
| timeout = simple_strtol(q, NULL, 0); |
| } |
| |
| /* If this is a reboot due to FW detecting CAS changes then |
| * set timeout to 1. The last kernel booted will be booted |
| * again automatically. It should seem seamless to the user |
| */ |
| if (fw_reboot_cnt) |
| timeout = 1; |
| |
| prom_printf("boot: "); |
| c = -1; |
| if (timeout != -1) { |
| beg = prom_getms(); |
| if (timeout > 0) { |
| end = beg + 100 * timeout; |
| do { |
| c = prom_nbgetchar(); |
| } while (c == -1 && prom_getms() <= end); |
| } |
| if (c == -1) |
| c = '\n'; |
| else if (c != '\n' && c != '\t' && c != '\r' && c != '\b' ) { |
| cbuff[0] = c; |
| cbuff[1] = 0; |
| } |
| } |
| |
| if (c != -1 && c != '\n' && c != '\r') { |
| if (c == '\t') { |
| maintabfunc (); |
| } else if (c >= ' ') { |
| cbuff[0] = c; |
| cbuff[1] = 0; |
| if ((cfg_get_flag (cbuff, "single-key")) && useconf) { |
| imagename = cbuff; |
| singlekey = 1; |
| prom_printf("%s\n", cbuff); |
| } |
| } |
| } |
| |
| if (c == '\n' || c == '\r') { |
| if (!imagename) { |
| if (bootoncelabel[0] != 0) |
| imagename = bootoncelabel; |
| else if (bootlastlabel[0] != 0) |
| imagename = bootlastlabel; |
| else |
| imagename = cfg_get_default(); |
| } |
| if (imagename) |
| prom_printf("%s", imagename); |
| if (params->args) |
| prom_printf(" %s", params->args); |
| prom_printf("\n"); |
| } else if (!singlekey) { |
| cmdedit(maintabfunc, 0); |
| prom_printf("\n"); |
| strcpy(given_bootargs, cbuff); |
| given_bootargs_by_user = 1; |
| imagename = cbuff; |
| word_split(&imagename, ¶ms->args); |
| } |
| |
| /* initrd setup via cmd console */ |
| /* first, check if the user uses it with some label */ |
| if (!strncmp(params->args, "initrd=", 7)) { |
| DEBUG_F("params->args: %s\n", params->args); |
| definitrd = 0; |
| } |
| /* after, check if there is the 'initrd=' in the imagename string */ |
| if (!strncmp(imagename, "initrd=", 7) || !definitrd) { |
| |
| /* return the value of definitrd to 1 */ |
| if (!definitrd) |
| definitrd = 1; |
| |
| /* args = "initrd=blah" */ |
| char *args = NULL; |
| |
| if (params->args) { |
| args = params->args; |
| params->args = NULL; |
| hasarg = 1; |
| } else |
| args = imagename; |
| |
| if (strlen(args)){ |
| /* copy the string after the '=' to manualinitrd */ |
| strcpy(manualinitrd, args+7); |
| definitrd = 0; |
| prom_printf("New initrd file specified: %s\n", manualinitrd); |
| } else { |
| prom_printf("ERROR: no initrd specified!\n"); |
| return 0; |
| } |
| |
| /* set imagename with the default values of the config file */ |
| if ((prom_get_devtype(boot.dev) == FILE_DEVICE_NET) && !hasarg) |
| imagename = cfg_get_default(); |
| else |
| imagename = cfg_get_default(); |
| } |
| |
| /* chrp gets this wrong, force it -- Cort */ |
| if ( useconf && (!imagename || imagename[0] == 0 )) |
| imagename = cfg_get_default(); |
| |
| /* write the imagename out so it can be reused on reboot if necessary */ |
| prom_set_options("boot-last-label", imagename, strlen(imagename)); |
| |
| label = 0; |
| defdevice = boot.dev; |
| |
| strcpy(defdevice_bak,defdevice); |
| |
| if (useconf) { |
| defdevice = cfg_get_strg(0, "device"); |
| p = cfg_get_strg(0, "partition"); |
| if (p) { |
| n = simple_strtol(p, &endp, 10); |
| if (endp != p && *endp == 0) |
| defpart = n; |
| } |
| p = cfg_get_strg(0, "pause-message"); |
| if (p) |
| pause_message = p; |
| if (cfg_get_flag(0, "restricted")) |
| restricted = 1; |
| p = cfg_get_strg(imagename, "image"); |
| if (p && *p) { |
| label = imagename; |
| imagename = p; |
| defdevice = cfg_get_strg(label, "device"); |
| if(!defdevice) defdevice=boot.dev; |
| p = cfg_get_strg(label, "partition"); |
| if (p) { |
| n = simple_strtol(p, &endp, 10); |
| if (endp != p && *endp == 0) |
| defpart = n; |
| } |
| if (cfg_get_flag(label, "restricted")) |
| restricted = 1; |
| if (label) { |
| if (params->args && password && restricted) |
| check_password ("To specify arguments for this image " |
| "you must enter the password."); |
| else if (password && !restricted) |
| check_password ("This image is restricted."); |
| } |
| params->args = make_params(label, params->args); |
| } |
| } |
| |
| if (!strcmp (imagename, "help")) { |
| /* FIXME: defdevice shouldn't need to be reset all over the place */ |
| if(!defdevice) defdevice = boot.dev; |
| prom_printf( |
| "\nPress the tab key for a list of defined images.\n" |
| "The label marked with a \"*\" is is the default image, " |
| "press <return> to boot it.\n\n" |
| "To boot any other label simply type its name and press <return>.\n\n" |
| "To boot a kernel image which is not defined in the yaboot configuration \n" |
| "file, enter the kernel image name as [[device:][partno],]/path, where \n" |
| "\"device:\" is the OpenFirmware device path to the disk the image \n" |
| "resides on, and \"partno\" is the partition number the image resides on.\n" |
| "Note that the comma (,) is only required if you specify an OpenFirmware\n" |
| "device, if you only specify a filename you should not start it with a \",\"\n\n" |
| "To boot a alternative initrd file rather than specified in the yaboot\n" |
| "configuration file, use the \"initrd\" command on Yaboot's prompt: \n" |
| "\"initrd=[name.img]\". This will load the \"name.img\" file after the default\n" |
| "kernel image. You can, also, specify a different initrd file to any other\n" |
| "label of the yaboot configuration file. Just type \"label initrd=[name.img]\"\n" |
| "and the specified initrd file will be loaded.\n\n" |
| "To load an alternative config file rather than /etc/yaboot.conf, enter\n" |
| "its device, partno and path, on Open Firmware Prompt:\n" |
| "boot conf=device:partno,/path/to/configfile\n." |
| "To reload the config file or load a new one, use the \"conf\" command\n" |
| "on Yaboot's prompt:\n" |
| "conf [device=device] [partition=partno] [file=/path/to/configfile]\n\n" |
| "If you omit \"device\" and \"partno\", Yaboot will use their current\n" |
| "values. You can check them by entering \"conf\" on Yaboot's prompt.\n"); |
| |
| return 0; |
| } |
| |
| if (!strcmp (imagename, "halt")) { |
| if (password) |
| check_password ("Restricted command."); |
| prom_pause(); |
| return 0; |
| } |
| if (!strcmp (imagename, "bye")) { |
| if (password) { |
| check_password ("Restricted command."); |
| return 1; |
| } |
| return 1; |
| } |
| |
| if (!strncmp (imagename, "conf", 4)) { |
| |
| // imagename = "conf file=blah dev=bleh part=blih" |
| DEBUG_F("Loading user-specified config file: %s\n",imagename); |
| if (password) { |
| check_password ("Restricted command."); |
| return 1; |
| } |
| |
| // args= "file=blah dev=bleh part=blih" |
| char *args = params->args; |
| |
| if (strlen(args)){ |
| |
| // set a pointer to the first space in args |
| char *space = strchr(args,' '); |
| |
| int loop = 3; |
| while (loop > 0){ |
| char temp[1024] = "0"; |
| |
| // copy next argument to temp |
| strncpy(temp, args, space-args); |
| |
| // parse temp and set boot arguments |
| if (!strncmp (temp, "file=", 5)){ |
| DEBUG_F("conf file: %s\n", temp+5); |
| strcpy(boot.file, temp+5); |
| } else if (!strncmp (temp, "device=", 7)){ |
| DEBUG_F("conf device: %s\n", temp+7); |
| strcpy(boot.dev, temp+7); |
| } else if (!strncmp (temp, "partition=", 10)){ |
| DEBUG_F("conf partition: %s\n", temp+10); |
| boot.part=simple_strtol(temp+10,NULL,10); |
| } else |
| space = NULL; |
| |
| // set the pointer to the next space in args; |
| // set the loop control variable |
| if (strlen(space)>1){ |
| // Go to the next argument |
| args = space+1; |
| |
| loop--; |
| if (strchr(args,' ') == NULL) |
| space = &args[strlen(args)]; |
| else |
| space = strchr(args,' '); |
| } else { |
| loop = -1; |
| space = NULL; |
| } |
| } |
| |
| prom_printf("Loading config file...\n"); |
| useconf = load_config_file(&boot); |
| if (useconf > 0){ |
| if ((q = cfg_get_strg(0, "timeout")) != 0 && *q != 0) |
| timeout = simple_strtol(q, NULL, 0); |
| } else { |
| prom_printf("Restoring default values.\n"); |
| strcpy(boot.file,""); |
| strcpy(boot.dev, defdevice_bak); |
| boot.part = defpart; |
| } |
| |
| } else { |
| prom_printf("Current configuration:\n"); |
| prom_printf("device: %s\n", boot.dev); |
| if (boot.part < 0) |
| prom_printf("partition: auto\n"); |
| else |
| prom_printf("partition: %d\n", boot.part); |
| if (strlen(boot.file)) |
| prom_printf("file: %s\n", boot.file); |
| else |
| prom_printf("file: /etc/%s\n",CONFIG_FILE_NAME); |
| } |
| |
| imagename = "\0"; |
| params->args = "\0"; |
| |
| return 0; |
| } |
| |
| if (imagename[0] == '$') { |
| /* forth command string */ |
| if (password) |
| check_password ("OpenFirmware commands are restricted."); |
| prom_interpret(imagename+1); |
| return 0; |
| } |
| |
| strncpy(imagepath, imagename, 1024); |
| |
| if (!label && password) |
| check_password ("To boot a custom image you must enter the password."); |
| |
| if (!parse_device_path(imagepath, defdevice, defpart, |
| "/vmlinux", ¶ms->kernel)) { |
| prom_printf("%s: Unable to parse\n", imagepath); |
| return 0; |
| } |
| DEBUG_F("after parse_device_path: dev=%s part=%d file=%s\n", params->kernel.dev, params->kernel.part, params->kernel.file); |
| if (useconf) { |
| p = cfg_get_strg(label, "initrd"); |
| if (p && *p) { |
| |
| /* check if user seted to use a initrd file from boot console */ |
| if (!definitrd && p != manualinitrd) { |
| if (manualinitrd[0] != "/" && (prom_get_devtype(defdevice_bak) != FILE_DEVICE_NET)) { |
| strcpy(initrdpath, "/"); |
| strcat(initrdpath, manualinitrd); |
| } else |
| strncpy(initrdpath, manualinitrd, 1024); |
| } else |
| strncpy(initrdpath, p, 1024); |
| |
| DEBUG_F("Parsing initrd path <%s>\n", initrdpath); |
| if (!parse_device_path(initrdpath, defdevice, defpart, |
| "/root.bin", ¶ms->rd)) { |
| prom_printf("%s: Unable to parse\n", imagepath); |
| return 0; |
| } |
| } |
| p = cfg_get_strg(label, "sysmap"); |
| if (p && *p) { |
| DEBUG_F("Parsing sysmap path <%s>\n", p); |
| strncpy(sysmappath, p, 1024); |
| if (!parse_device_path(sysmappath, defdevice, defpart, |
| "/boot/System.map", ¶ms->sysmap)) { |
| prom_printf("%s: Unable to parse\n", imagepath); |
| return 0; |
| } |
| } |
| } |
| return 0; |
| } |
| |
| /* This is derived from quik core. To be changed to first parse the headers |
| * doing lazy-loading, and then claim the memory before loading the kernel |
| * to it |
| * We also need to add initrd support to this whole mecanism |
| */ |
| void |
| yaboot_text_ui(void) |
| { |
| #define MAX_HEADERS 32 |
| |
| struct boot_file_t file; |
| int result; |
| static struct boot_param_t params; |
| void *initrd_base; |
| unsigned long initrd_size; |
| void *sysmap_base; |
| unsigned long sysmap_size; |
| kernel_entry_t kernel_entry; |
| char* loc=NULL; |
| loadinfo_t loadinfo; |
| void *initrd_more,*initrd_want; |
| unsigned long initrd_read; |
| |
| loadinfo.load_loc = 0; |
| |
| for (;;) { |
| initrd_size = 0; |
| initrd_base = 0; |
| sysmap_base = 0; |
| sysmap_size = 0; |
| |
| if (get_params(¶ms)) |
| return; |
| if (!params.kernel.file) |
| continue; |
| |
| prom_printf("Please wait, loading kernel...\n"); |
| |
| memset(&file, 0, sizeof(file)); |
| |
| if (strlen(boot.file) && !strcmp(boot.file,"\\\\") && params.kernel.file[0] != '/' |
| && params.kernel.file[0] != '\\') { |
| loc=(char*)malloc(strlen(params.kernel.file)+3); |
| if (!loc) { |
| prom_printf ("malloc error\n"); |
| goto next; |
| } |
| strcpy(loc,boot.file); |
| strcat(loc,params.kernel.file); |
| free(params.kernel.file); |
| params.kernel.file=loc; |
| } |
| result = open_file(¶ms.kernel, &file); |
| if (result != FILE_ERR_OK) { |
| prom_printf("%s:%d,", params.kernel.dev, params.kernel.part); |
| prom_perror(result, params.kernel.file); |
| goto next; |
| } |
| |
| /* Read the Elf e_ident, e_type and e_machine fields to |
| * determine Elf file type |
| */ |
| if (file.fs->read(&file, sizeof(Elf_Ident), &loadinfo.elf) < sizeof(Elf_Ident)) { |
| prom_printf("\nCan't read Elf e_ident/e_type/e_machine info\n"); |
| file.fs->close(&file); |
| memset(&file, 0, sizeof(file)); |
| goto next; |
| } |
| |
| if (is_elf32(&loadinfo)) { |
| if (!load_elf32(&file, &loadinfo)) { |
| file.fs->close(&file); |
| memset(&file, 0, sizeof(file)); |
| goto next; |
| } |
| prom_printf(" Elf32 kernel loaded...\n"); |
| } else if (is_elf64(&loadinfo)) { |
| if (!load_elf64(&file, &loadinfo)) { |
| file.fs->close(&file); |
| memset(&file, 0, sizeof(file)); |
| goto next; |
| } |
| prom_printf(" Elf64 kernel loaded...\n"); |
| } else { |
| prom_printf ("%s: Not a valid ELF image\n", params.kernel.file); |
| file.fs->close(&file); |
| memset(&file, 0, sizeof(file)); |
| goto next; |
| } |
| file.fs->close(&file); |
| memset(&file, 0, sizeof(file)); |
| |
| /* If sysmap, load it (only if booting a vmlinux). |
| */ |
| if (flat_vmlinux && params.sysmap.file) { |
| prom_printf("Loading System.map ...\n"); |
| if(strlen(boot.file) && !strcmp(boot.file,"\\\\") && params.sysmap.file[0] != '/' |
| && params.sysmap.file[0] != '\\') { |
| if (loc) free(loc); |
| loc=(char*)malloc(strlen(params.sysmap.file)+3); |
| if (!loc) { |
| prom_printf ("malloc error\n"); |
| goto next; |
| } |
| strcpy(loc,boot.file); |
| strcat(loc,params.sysmap.file); |
| free(params.sysmap.file); |
| params.sysmap.file=loc; |
| } |
| |
| result = open_file(¶ms.sysmap, &file); |
| if (result != FILE_ERR_OK) { |
| prom_printf("%s:%d,", params.sysmap.dev, params.sysmap.part); |
| prom_perror(result, params.sysmap.file); |
| } |
| else { |
| sysmap_base = prom_claim(loadinfo.base+loadinfo.memsize, 0x100000, 0); |
| if (sysmap_base == (void *)-1) { |
| prom_printf("Claim failed for sysmap memory\n"); |
| prom_pause(); |
| sysmap_base = 0; |
| } else { |
| sysmap_size = file.fs->read(&file, 0xfffff, sysmap_base); |
| if (sysmap_size == 0) |
| sysmap_base = 0; |
| else |
| ((char *)sysmap_base)[sysmap_size++] = 0; |
| } |
| file.fs->close(&file); |
| memset(&file, 0, sizeof(file)); |
| } |
| if (sysmap_base) { |
| prom_printf("System.map loaded at %p, size: %lu Kbytes\n", |
| sysmap_base, sysmap_size >> 10); |
| loadinfo.memsize += _ALIGN(0x100000, 0x1000); |
| } else { |
| prom_printf("System.map load failed !\n"); |
| prom_pause(); |
| } |
| } |
| |
| /* If ramdisk, load it (only if booting a vmlinux). For now, we |
| * can't tell the size it will be so we claim an arbitrary amount |
| * of 4Mb. |
| */ |
| if (flat_vmlinux && params.rd.file) { |
| if(strlen(boot.file) && !strcmp(boot.file,"\\\\") && params.rd.file[0] != '/' |
| && params.kernel.file[0] != '\\') |
| { |
| if (loc) free(loc); |
| loc=(char*)malloc(strlen(params.rd.file)+3); |
| if (!loc) { |
| prom_printf ("Malloc error\n"); |
| goto next; |
| } |
| strcpy(loc,boot.file); |
| strcat(loc,params.rd.file); |
| free(params.rd.file); |
| params.rd.file=loc; |
| } |
| prom_printf("Loading ramdisk...\n"); |
| result = open_file(¶ms.rd, &file); |
| if (result != FILE_ERR_OK) { |
| prom_printf("%s:%d,", params.rd.dev, params.rd.part); |
| prom_perror(result, params.rd.file); |
| } |
| else { |
| #define INITRD_CHUNKSIZE 0x100000 |
| initrd_base = prom_claim(loadinfo.base+loadinfo.memsize, INITRD_CHUNKSIZE, 0); |
| if (initrd_base == (void *)-1) { |
| prom_printf("Claim failed for initrd memory\n"); |
| initrd_base = 0; |
| } else { |
| initrd_size = file.fs->read(&file, INITRD_CHUNKSIZE, initrd_base); |
| if (initrd_size == 0) |
| initrd_base = 0; |
| initrd_read = initrd_size; |
| initrd_more = initrd_base; |
| while (initrd_read == INITRD_CHUNKSIZE ) { /* need to read more? */ |
| initrd_want = (void *)((unsigned long)initrd_more+INITRD_CHUNKSIZE); |
| initrd_more = prom_claim(initrd_want, INITRD_CHUNKSIZE, 0); |
| if (initrd_more != initrd_want) { |
| prom_printf("Claim failed for initrd memory at %p rc=%p\n",initrd_want,initrd_more); |
| prom_pause(); |
| break; |
| } |
| initrd_read = file.fs->read(&file, INITRD_CHUNKSIZE, initrd_more); |
| DEBUG_F(" block at %p rc=%lu\n",initrd_more,initrd_read); |
| initrd_size += initrd_read; |
| } |
| } |
| file.fs->close(&file); |
| memset(&file, 0, sizeof(file)); |
| } |
| if (initrd_base) |
| prom_printf("ramdisk loaded at %p, size: %lu Kbytes\n", |
| initrd_base, initrd_size >> 10); |
| else { |
| prom_printf("ramdisk load failed !\n"); |
| prom_pause(); |
| } |
| } |
| |
| DEBUG_F("setting kernel args to: %s\n", params.args); |
| prom_setargs(params.args); |
| DEBUG_F("flushing icache..."); |
| flush_icache_range ((long)loadinfo.base, (long)loadinfo.base+loadinfo.memsize); |
| DEBUG_F(" done\n"); |
| |
| /* compute the kernel's entry point. */ |
| kernel_entry = loadinfo.base + loadinfo.entry - loadinfo.load_loc; |
| |
| DEBUG_F("Kernel entry point = %p\n", kernel_entry); |
| DEBUG_F("kernel: arg1 = %p,\n" |
| " arg2 = 0x%08lx,\n" |
| " prom = %p,\n" |
| " arg4 = %d,\n" |
| " arg5 = %d\n\n", |
| initrd_base + loadinfo.load_loc, initrd_size, prom, 0, 0); |
| |
| DEBUG_F("Entering kernel...\n"); |
| |
| /* call the kernel with our stack. */ |
| kernel_entry(initrd_base + loadinfo.load_loc, initrd_size, prom, 0, 0); |
| continue; |
| next: |
| ; /* do nothing */ |
| } |
| } |
| |
| static int |
| load_elf32(struct boot_file_t *file, loadinfo_t *loadinfo) |
| { |
| int i; |
| Elf32_Ehdr *e = &(loadinfo->elf.elf32hdr); |
| Elf32_Phdr *p, *ph; |
| int size = sizeof(Elf32_Ehdr) - sizeof(Elf_Ident); |
| unsigned long loadaddr; |
| |
| /* Read the rest of the Elf header... */ |
| if ((*(file->fs->read))(file, size, &e->e_version) < size) { |
| prom_printf("\nCan't read Elf32 image header\n"); |
| goto bail; |
| } |
| |
| DEBUG_F("Elf32 header:\n"); |
| DEBUG_F(" e.e_type = %d\n", (int)e->e_type); |
| DEBUG_F(" e.e_machine = %d\n", (int)e->e_machine); |
| DEBUG_F(" e.e_version = %d\n", (int)e->e_version); |
| DEBUG_F(" e.e_entry = 0x%08x\n", (int)e->e_entry); |
| DEBUG_F(" e.e_phoff = 0x%08x\n", (int)e->e_phoff); |
| DEBUG_F(" e.e_shoff = 0x%08x\n", (int)e->e_shoff); |
| DEBUG_F(" e.e_flags = %d\n", (int)e->e_flags); |
| DEBUG_F(" e.e_ehsize = 0x%08x\n", (int)e->e_ehsize); |
| DEBUG_F(" e.e_phentsize = 0x%08x\n", (int)e->e_phentsize); |
| DEBUG_F(" e.e_phnum = %d\n", (int)e->e_phnum); |
| |
| loadinfo->entry = e->e_entry; |
| |
| if (e->e_phnum > MAX_HEADERS) { |
| prom_printf ("Can only load kernels with one program header\n"); |
| goto bail; |
| } |
| |
| ph = (Elf32_Phdr *)malloc(sizeof(Elf32_Phdr) * e->e_phnum); |
| if (!ph) { |
| prom_printf ("Malloc error\n"); |
| goto bail; |
| } |
| |
| /* Now, we read the section header */ |
| if ((*(file->fs->seek))(file, e->e_phoff) != FILE_ERR_OK) { |
| prom_printf ("seek error\n"); |
| goto bail; |
| } |
| if ((*(file->fs->read))(file, sizeof(Elf32_Phdr) * e->e_phnum, ph) != |
| sizeof(Elf32_Phdr) * e->e_phnum) { |
| prom_printf ("read error\n"); |
| goto bail; |
| } |
| |
| /* Scan through the program header |
| * HACK: We must return the _memory size of the kernel image, not the |
| * file size (because we have to leave room before other boot |
| * infos. This code works as a side effect of the fact that |
| * we have one section and vaddr == p_paddr |
| */ |
| loadinfo->memsize = loadinfo->filesize = loadinfo->offset = 0; |
| p = ph; |
| for (i = 0; i < e->e_phnum; ++i, ++p) { |
| if (p->p_type != PT_LOAD || p->p_offset == 0) |
| continue; |
| if (loadinfo->memsize == 0) { |
| loadinfo->offset = p->p_offset; |
| loadinfo->memsize = p->p_memsz; |
| loadinfo->filesize = p->p_filesz; |
| loadinfo->load_loc = p->p_vaddr; |
| } else { |
| loadinfo->memsize = p->p_offset + p->p_memsz - loadinfo->offset; /* XXX Bogus */ |
| loadinfo->filesize = p->p_offset + p->p_filesz - loadinfo->offset; |
| } |
| } |
| |
| if (loadinfo->memsize == 0) { |
| prom_printf("Can't find a loadable segment !\n"); |
| goto bail; |
| } |
| |
| /* leave some room (1Mb) for boot infos */ |
| loadinfo->memsize = _ALIGN(loadinfo->memsize,(1<<20)) + 0x100000; |
| /* Claim OF memory */ |
| DEBUG_F("Before prom_claim, mem_sz: 0x%08lx\n", loadinfo->memsize); |
| |
| /* Determine whether we are trying to boot a vmlinux or some |
| * other binary image (eg, zImage). We load vmlinux's at |
| * KERNELADDR and all other binaries at their e_entry value. |
| */ |
| if (e->e_entry == KERNEL_LINK_ADDR_PPC32) { |
| flat_vmlinux = 1; |
| loadaddr = KERNELADDR; |
| } else { |
| flat_vmlinux = 0; |
| loadaddr = loadinfo->load_loc; |
| } |
| |
| loadinfo->base = prom_claim_chunk((void *)loadaddr, loadinfo->memsize, 0); |
| if (loadinfo->base == (void *)-1) { |
| prom_printf("Claim error, can't allocate kernel memory\n"); |
| goto bail; |
| } |
| |
| DEBUG_F("After ELF parsing, load base: %p, mem_sz: 0x%08lx\n", |
| loadinfo->base, loadinfo->memsize); |
| DEBUG_F(" wanted load base: 0x%08lx, mem_sz: 0x%08lx\n", |
| loadaddr, loadinfo->memsize); |
| |
| /* Load the program segments... */ |
| p = ph; |
| for (i = 0; i < e->e_phnum; ++i, ++p) { |
| unsigned long offset; |
| if (p->p_type != PT_LOAD || p->p_offset == 0) |
| continue; |
| |
| /* Now, we skip to the image itself */ |
| if ((*(file->fs->seek))(file, p->p_offset) != FILE_ERR_OK) { |
| prom_printf ("Seek error\n"); |
| prom_release(loadinfo->base, loadinfo->memsize); |
| goto bail; |
| } |
| offset = p->p_vaddr - loadinfo->load_loc; |
| if ((*(file->fs->read))(file, p->p_filesz, loadinfo->base+offset) != p->p_filesz) { |
| prom_printf ("Read failed\n"); |
| prom_release(loadinfo->base, loadinfo->memsize); |
| goto bail; |
| } |
| } |
| |
| free(ph); |
| |
| /* Return success at loading the Elf32 kernel */ |
| return 1; |
| |
| bail: |
| if (ph) |
| free(ph); |
| return 0; |
| } |
| |
| static int |
| load_elf64(struct boot_file_t *file, loadinfo_t *loadinfo) |
| { |
| int i; |
| Elf64_Ehdr *e = &(loadinfo->elf.elf64hdr); |
| Elf64_Phdr *p, *ph; |
| int size = sizeof(Elf64_Ehdr) - sizeof(Elf_Ident); |
| unsigned long loadaddr; |
| |
| /* Read the rest of the Elf header... */ |
| if ((*(file->fs->read))(file, size, &e->e_version) < size) { |
| prom_printf("\nCan't read Elf64 image header\n"); |
| goto bail; |
| } |
| |
| DEBUG_F("Elf64 header:\n"); |
| DEBUG_F(" e.e_type = %d\n", (int)e->e_type); |
| DEBUG_F(" e.e_machine = %d\n", (int)e->e_machine); |
| DEBUG_F(" e.e_version = %d\n", (int)e->e_version); |
| DEBUG_F(" e.e_entry = 0x%016lx\n", (long)e->e_entry); |
| DEBUG_F(" e.e_phoff = 0x%016lx\n", (long)e->e_phoff); |
| DEBUG_F(" e.e_shoff = 0x%016lx\n", (long)e->e_shoff); |
| DEBUG_F(" e.e_flags = %d\n", (int)e->e_flags); |
| DEBUG_F(" e.e_ehsize = 0x%08x\n", (int)e->e_ehsize); |
| DEBUG_F(" e.e_phentsize = 0x%08x\n", (int)e->e_phentsize); |
| DEBUG_F(" e.e_phnum = %d\n", (int)e->e_phnum); |
| |
| loadinfo->entry = e->e_entry; |
| |
| if (e->e_phnum > MAX_HEADERS) { |
| prom_printf ("Can only load kernels with one program header\n"); |
| goto bail; |
| } |
| |
| ph = (Elf64_Phdr *)malloc(sizeof(Elf64_Phdr) * e->e_phnum); |
| if (!ph) { |
| prom_printf ("Malloc error\n"); |
| goto bail; |
| } |
| |
| /* Now, we read the section header */ |
| if ((*(file->fs->seek))(file, e->e_phoff) != FILE_ERR_OK) { |
| prom_printf ("Seek error\n"); |
| goto bail; |
| } |
| if ((*(file->fs->read))(file, sizeof(Elf64_Phdr) * e->e_phnum, ph) != |
| sizeof(Elf64_Phdr) * e->e_phnum) { |
| prom_printf ("Read error\n"); |
| goto bail; |
| } |
| |
| /* Scan through the program header |
| * HACK: We must return the _memory size of the kernel image, not the |
| * file size (because we have to leave room before other boot |
| * infos. This code works as a side effect of the fact that |
| * we have one section and vaddr == p_paddr |
| */ |
| loadinfo->memsize = loadinfo->filesize = loadinfo->offset = 0; |
| p = ph; |
| for (i = 0; i < e->e_phnum; ++i, ++p) { |
| if (p->p_type != PT_LOAD || p->p_offset == 0) |
| continue; |
| if (loadinfo->memsize == 0) { |
| loadinfo->offset = p->p_offset; |
| loadinfo->memsize = p->p_memsz; |
| loadinfo->filesize = p->p_filesz; |
| loadinfo->load_loc = p->p_vaddr; |
| } else { |
| loadinfo->memsize = p->p_offset + p->p_memsz - loadinfo->offset; /* XXX Bogus */ |
| loadinfo->filesize = p->p_offset + p->p_filesz - loadinfo->offset; |
| } |
| } |
| |
| if (loadinfo->memsize == 0) { |
| prom_printf("Can't find a loadable segment !\n"); |
| goto bail; |
| } |
| |
| loadinfo->memsize = _ALIGN(loadinfo->memsize,(1<<20)); |
| /* Claim OF memory */ |
| DEBUG_F("Before prom_claim, mem_sz: 0x%08lx\n", loadinfo->memsize); |
| |
| /* Determine whether we are trying to boot a vmlinux or some |
| * other binary image (eg, zImage). We load vmlinux's at |
| * KERNELADDR and all other binaries at their e_entry value. |
| */ |
| if (e->e_entry == KERNEL_LINK_ADDR_PPC64) { |
| flat_vmlinux = 1; |
| loadaddr = KERNELADDR; |
| } else { |
| flat_vmlinux = 0; |
| loadaddr = e->e_entry; |
| } |
| |
| loadinfo->base = prom_claim_chunk((void *)loadaddr, loadinfo->memsize, 0); |
| if (loadinfo->base == (void *)-1) { |
| prom_printf("Claim error, can't allocate kernel memory\n"); |
| goto bail; |
| } |
| |
| DEBUG_F("After ELF parsing, load base: %p, mem_sz: 0x%08lx\n", |
| loadinfo->base, loadinfo->memsize); |
| DEBUG_F(" wanted load base: 0x%08lx, mem_sz: 0x%08lx\n", |
| loadaddr, loadinfo->memsize); |
| |
| /* Load the program segments... */ |
| p = ph; |
| for (i = 0; i < e->e_phnum; ++i, ++p) { |
| unsigned long offset; |
| if (p->p_type != PT_LOAD || p->p_offset == 0) |
| continue; |
| |
| /* Now, we skip to the image itself */ |
| if ((*(file->fs->seek))(file, p->p_offset) != FILE_ERR_OK) { |
| prom_printf ("Seek error\n"); |
| prom_release(loadinfo->base, loadinfo->memsize); |
| goto bail; |
| } |
| offset = p->p_vaddr - loadinfo->load_loc; |
| if ((*(file->fs->read))(file, p->p_filesz, loadinfo->base+offset) != p->p_filesz) { |
| prom_printf ("Read failed\n"); |
| prom_release(loadinfo->base, loadinfo->memsize); |
| goto bail; |
| } |
| } |
| |
| free(ph); |
| |
| /* Return success at loading the Elf64 kernel */ |
| return 1; |
| |
| bail: |
| if (ph) |
| free(ph); |
| return 0; |
| } |
| |
| static int |
| is_elf32(loadinfo_t *loadinfo) |
| { |
| Elf32_Ehdr *e = &(loadinfo->elf.elf32hdr); |
| |
| return (e->e_ident[EI_MAG0] == ELFMAG0 && |
| e->e_ident[EI_MAG1] == ELFMAG1 && |
| e->e_ident[EI_MAG2] == ELFMAG2 && |
| e->e_ident[EI_MAG3] == ELFMAG3 && |
| e->e_ident[EI_CLASS] == ELFCLASS32 && |
| e->e_ident[EI_DATA] == ELFDATA2MSB && |
| e->e_type == ET_EXEC && |
| e->e_machine == EM_PPC); |
| } |
| |
| static int |
| is_elf64(loadinfo_t *loadinfo) |
| { |
| Elf64_Ehdr *e = &(loadinfo->elf.elf64hdr); |
| |
| return (e->e_ident[EI_MAG0] == ELFMAG0 && |
| e->e_ident[EI_MAG1] == ELFMAG1 && |
| e->e_ident[EI_MAG2] == ELFMAG2 && |
| e->e_ident[EI_MAG3] == ELFMAG3 && |
| e->e_ident[EI_CLASS] == ELFCLASS64 && |
| e->e_ident[EI_DATA] == ELFDATA2MSB && |
| (e->e_type == ET_EXEC || e->e_type == ET_DYN) && |
| e->e_machine == EM_PPC64); |
| } |
| |
| static void |
| setup_display(void) |
| { |
| #ifdef CONFIG_SET_COLORMAP |
| static unsigned char default_colors[] = { |
| 0x00, 0x00, 0x00, |
| 0x00, 0x00, 0xaa, |
| 0x00, 0xaa, 0x00, |
| 0x00, 0xaa, 0xaa, |
| 0xaa, 0x00, 0x00, |
| 0xaa, 0x00, 0xaa, |
| 0xaa, 0x55, 0x00, |
| 0xaa, 0xaa, 0xaa, |
| 0x55, 0x55, 0x55, |
| 0x55, 0x55, 0xff, |
| 0x55, 0xff, 0x55, |
| 0x55, 0xff, 0xff, |
| 0xff, 0x55, 0x55, |
| 0xff, 0x55, 0xff, |
| 0xff, 0xff, 0x55, |
| 0xff, 0xff, 0xff |
| }; |
| int i, result; |
| prom_handle scrn = PROM_INVALID_HANDLE; |
| |
| /* Try Apple's mac-boot screen ihandle */ |
| result = (int)call_prom_return("interpret", 1, 2, |
| "\" _screen-ihandle\" $find if execute else 0 then", &scrn); |
| DEBUG_F("Trying to get screen ihandle, result: %d, scrn: %p\n", result, scrn); |
| |
| if (scrn == 0 || scrn == PROM_INVALID_HANDLE) { |
| char type[32]; |
| /* Hrm... check to see if stdout is a display */ |
| scrn = call_prom ("instance-to-package", 1, 1, prom_stdout); |
| DEBUG_F("instance-to-package of stdout is: %p\n", scrn); |
| if (prom_getprop(scrn, "device_type", type, 32) > 0 && !strncmp(type, "display", 7)) { |
| DEBUG_F("got it ! stdout is a screen\n"); |
| scrn = prom_stdout; |
| } else { |
| /* Else, we try to open the package */ |
| scrn = (prom_handle)call_prom( "open", 1, 1, "screen" ); |
| DEBUG_F("Open screen result: %p\n", scrn); |
| } |
| } |
| |
| if (scrn == PROM_INVALID_HANDLE) { |
| prom_printf("No screen device found !\n"); |
| return; |
| } |
| for(i=0;i<16;i++) { |
| prom_set_color(scrn, i, default_colors[i*3], |
| default_colors[i*3+1], default_colors[i*3+2]); |
| } |
| prom_printf("\x1b[1;37m\x1b[2;40m"); |
| #ifdef COLOR_TEST |
| for (i=0;i<16; i++) { |
| prom_printf("\x1b[%d;%dm\x1b[1;47m%s \x1b[2;40m %s\n", |
| ansi_color_table[i].index, |
| ansi_color_table[i].value, |
| ansi_color_table[i].name, |
| ansi_color_table[i].name); |
| prom_printf("\x1b[%d;%dm\x1b[1;37m%s \x1b[2;30m %s\n", |
| ansi_color_table[i].index, |
| ansi_color_table[i].value+10, |
| ansi_color_table[i].name, |
| ansi_color_table[i].name); |
| } |
| prom_printf("\x1b[1;37m\x1b[2;40m"); |
| #endif /* COLOR_TEST */ |
| |
| #if !DEBUG |
| prom_printf("\xc"); |
| #endif /* !DEBUG */ |
| |
| #endif /* CONFIG_SET_COLORMAP */ |
| } |
| |
| int |
| yaboot_main(void) |
| { |
| char *ptype; |
| char *endp; |
| int conf_given = 0; |
| char conf_path[1024]; |
| |
| if (_machine == _MACH_Pmac) |
| setup_display(); |
| |
| prom_get_chosen("bootargs", bootargs, sizeof(bootargs)); |
| DEBUG_F("/chosen/bootargs = %s\n", bootargs); |
| prom_get_chosen("bootpath", bootdevice, BOOTDEVSZ); |
| DEBUG_F("/chosen/bootpath = %s\n", bootdevice); |
| if (prom_get_options("ibm,client-architecture-support-reboot",fw_nbr_reboots, FW_NBR_REBOOTSZ) == -1 ) |
| prom_get_options("ibm,fw-nbr-reboots",fw_nbr_reboots, FW_NBR_REBOOTSZ); |
| fw_reboot_cnt = simple_strtol(fw_nbr_reboots,&endp,10); |
| if (fw_reboot_cnt > 0L) |
| prom_get_options("boot-last-label", bootlastlabel, BOOTLASTSZ); |
| |
| /* If conf= specified on command line, it overrides |
| Usage: conf=device:partition,/path/to/conffile |
| Example: On Open Firmware Prompt, type |
| boot conf=/pci@8000000f8000000/pci@1/pci1014,028C@1/scsi@0/sd@1,0:3,/etc/yaboot.conf */ |
| |
| if (!strncmp(bootargs, "conf=", 5)) { |
| DEBUG_F("Using conf argument in Open Firmware\n"); |
| char *end = strchr(bootargs,' '); |
| if (end) |
| *end = 0; |
| |
| strcpy(bootdevice, bootargs + 5); |
| conf_given = 1; |
| DEBUG_F("Using conf=%s\n", bootdevice); |
| |
| /* Remove conf=xxx from bootargs */ |
| if (end) |
| memmove(bootargs, end+1, strlen(end+1)+1); |
| else |
| bootargs[0] = 0; |
| } |
| if (bootdevice[0] == 0) { |
| prom_get_options("boot-device", bootdevice, BOOTDEVSZ); |
| DEBUG_F("boot-device = %s\n", bootdevice); |
| } |
| if (bootdevice[0] == 0) { |
| prom_printf("Couldn't determine boot device\n"); |
| return -1; |
| } |
| |
| if (bootoncelabel[0] == 0) { |
| prom_get_options("boot-once", bootoncelabel, |
| sizeof(bootoncelabel)); |
| if (bootoncelabel[0] != 0) |
| DEBUG_F("boot-once: [%s]\n", bootoncelabel); |
| } |
| prom_set_options("boot-once", NULL, 0); |
| |
| if (!parse_device_path(bootdevice, NULL, -1, "", &boot)) { |
| prom_printf("%s: Unable to parse\n", bootdevice); |
| return -1; |
| } |
| if (_machine == _MACH_bplan && !conf_given) |
| boot.part++; |
| DEBUG_F("After parse_device_path: dev=%s, part=%d, file=%s\n", |
| boot.dev, boot.part, boot.file); |
| |
| if (!conf_given) { |
| if (_machine == _MACH_chrp || _machine == _MACH_bplan) |
| boot.file = "/etc/"; |
| else if (strlen(boot.file)) { |
| if (!strncmp(boot.file, "\\\\", 2)) |
| boot.file = "\\\\"; |
| else { |
| char *p, *last; |
| p = last = boot.file; |
| while(*p) { |
| if (*p == '\\') |
| last = p; |
| p++; |
| } |
| if (p) |
| *(last) = 0; |
| else |
| boot.file = ""; |
| if (strlen(boot.file)) |
| strcat(boot.file, "\\"); |
| } |
| } |
| strcpy(conf_path, boot.file); |
| strcat(conf_path, CONFIG_FILE_NAME); |
| boot.file = conf_path; |
| DEBUG_F("After path kludgeup: dev=%s, part=%d, file=%s\n", |
| boot.dev, boot.part, boot.file); |
| } |
| |
| /* |
| * If we're doing a netboot, first look for one which matches our |
| * MAC address. |
| */ |
| if (prom_get_devtype(boot.dev) == FILE_DEVICE_NET) { |
| prom_printf("Try to netboot\n"); |
| useconf = load_my_config_file(&boot); |
| } |
| |
| if (!useconf) |
| useconf = load_config_file(&boot); |
| |
| prom_printf("Welcome to yaboot version " VERSION "\n"); |
| prom_printf("Enter \"help\" to get some basic usage information\n"); |
| |
| /* I am fed up with lusers using the wrong partition type and |
| mailing me *when* it breaks */ |
| |
| if (_machine == _MACH_Pmac) { |
| char *entry = cfg_get_strg(0, "ptypewarning"); |
| int warn = 1; |
| if (entry) |
| warn = strcmp(entry, |
| "I_know_the_partition_type_is_wrong_and_will_NOT_send_mail_when_booting_breaks"); |
| if (warn) { |
| ptype = get_part_type(boot.dev, boot.part); |
| if ((ptype != NULL) && (strcmp(ptype, "Apple_Bootstrap"))) |
| prom_printf("\nWARNING: Bootstrap partition type is wrong: \"%s\"\n" |
| " type should be: \"Apple_Bootstrap\"\n\n", ptype); |
| if (ptype) |
| free(ptype); |
| } |
| } |
| |
| yaboot_text_ui(); |
| |
| prom_printf("Bye.\n"); |
| return 0; |
| } |
| |
| /* |
| * Local variables: |
| * c-file-style: "k&r" |
| * c-basic-offset: 5 |
| * End: |
| */ |