stage2/controlregs.h

/*
 *  GRUB  --  GRand Unified Bootloader
 *  Copyright (C) 2006  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.
 */

/*
 * Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

#ifndef	_SYS_CONTROLREGS_H
#define	_SYS_CONTROLREGS_H

//#pragma ident	"%Z%%M%	%I%	%E% SMI"

#ifdef __cplusplus
extern "C" {
#endif

/*
 * This file describes the x86 architecture control registers which
 * are part of the privileged architecture.
 *
 * Many of these definitions are shared between IA-32-style and
 * AMD64-style processors.
 */

/* CR0 Register */

#define	CR0_PG	0x80000000		/* paging enabled	*/
#define	CR0_CD	0x40000000		/* cache disable	*/
#define	CR0_NW	0x20000000		/* not writethrough	*/
#define	CR0_AM	0x00040000		/* alignment mask	*/
#define	CR0_WP	0x00010000		/* write protect	*/
#define	CR0_NE	0x00000020		/* numeric error	*/
#define	CR0_ET	0x00000010		/* extension type	*/
#define	CR0_TS	0x00000008		/* task switch		*/
#define	CR0_EM	0x00000004		/* emulation		*/
#define	CR0_MP	0x00000002		/* monitor coprocessor	*/
#define	CR0_PE	0x00000001		/* protection enabled	*/

/* XX64 eliminate these compatibility defines */

#define	CR0_CE	CR0_CD
#define	CR0_WT	CR0_NW

#define	FMT_CR0	\
	"\20\40pg\37cd\36nw\35am\21wp\6ne\5et\4ts\3em\2mp\1pe"

/* CR3 Register */

#define	CR3_PCD	0x00000010		/* cache disable 		*/
#define	CR3_PWT 0x00000008		/* write through 		*/

#define	FMT_CR3	"\20\5pcd\4pwt"

/* CR4 Register */

#define	CR4_VME		0x0001		/* virtual-8086 mode extensions	*/
#define	CR4_PVI		0x0002		/* protected-mode virtual interrupts */
#define	CR4_TSD		0x0004		/* time stamp disable		*/
#define	CR4_DE		0x0008		/* debugging extensions		*/
#define	CR4_PSE		0x0010		/* page size extensions		*/
#define	CR4_PAE		0x0020		/* physical address extension	*/
#define	CR4_MCE		0x0040		/* machine check enable		*/
#define	CR4_PGE		0x0080		/* page global enable		*/
#define	CR4_PCE		0x0100		/* perf-monitoring counter enable */
#define	CR4_OSFXSR	0x0200		/* OS fxsave/fxrstor support	*/
#define	CR4_OSXMMEXCPT	0x0400		/* OS unmasked exception support */

#define	FMT_CR4	\
	"\20\13xmme\12fxsr\11pce\10pge\7mce\6pae\5pse\4de\3tsd\2pvi\1vme"

/* Intel's SYSENTER configuration registers */

#define	MSR_INTC_SEP_CS	0x174		/* kernel code selector MSR */
#define	MSR_INTC_SEP_ESP 0x175		/* kernel esp MSR */
#define	MSR_INTC_SEP_EIP 0x176		/* kernel eip MSR */

/* AMD's EFER register */

#define	MSR_AMD_EFER	0xc0000080	/* extended feature enable MSR */

#define	AMD_EFER_NXE	0x800		/* no-execute enable		*/
#define	AMD_EFER_LMA	0x400		/* long mode active (read-only)	*/
#define	AMD_EFER_LME	0x100		/* long mode enable		*/
#define	AMD_EFER_SCE	0x001		/* system call extensions	*/

#define	FMT_AMD_EFER \
	"\20\14nxe\13lma\11lme\1sce"

/* AMD's SYSCFG register */

#define	MSR_AMD_SYSCFG	0xc0000010	/* system configuration MSR */

#define	AMD_SYSCFG_TOM2	0x200000	/* MtrrTom2En */
#define	AMD_SYSCFG_MVDM	0x100000	/* MtrrVarDramEn */
#define	AMD_SYSCFG_MFDM	0x080000	/* MtrrFixDramModEn */
#define	AMD_SYSCFG_MFDE	0x040000	/* MtrrFixDramEn */

#define	FMT_AMD_SYSCFG \
	"\20\26tom2\25mvdm\24mfdm\23mfde"

/* AMD's syscall/sysret MSRs */

#define	MSR_AMD_STAR	0xc0000081	/* %cs:%ss:%cs:%ss:%eip for syscall */
#define	MSR_AMD_LSTAR	0xc0000082	/* target %rip of 64-bit syscall */
#define	MSR_AMD_CSTAR	0xc0000083	/* target %rip of 32-bit syscall */
#define	MSR_AMD_SFMASK	0xc0000084	/* syscall flag mask */

/* AMD's FS.base and GS.base MSRs */

#define	MSR_AMD_FSBASE	0xc0000100	/* 64-bit base address for %fs */
#define	MSR_AMD_GSBASE	0xc0000101	/* 64-bit base address for %gs */
#define	MSR_AMD_KGSBASE	0xc0000102	/* swapgs swaps this with gsbase */

/* AMD's configuration MSRs, weakly documented in the revision guide */

#define	MSR_AMD_DC_CFG	0xc0011022

#define	AMD_DC_CFG_DIS_CNV_WC_SSO	(UINT64_C(1) << 3)
#define	AMD_DC_CFG_DIS_SMC_CHK_BUF	(UINT64_C(1) << 10)

/* AMD's HWCR MSR */

#define	MSR_AMD_HWCR	0xc0010015

#define	AMD_HWCR_FFDIS			0x00040	/* disable TLB Flush Filter */
#define	AMD_HWCR_MCI_STATUS_WREN	0x40000	/* enable write of MCi_STATUS */

/* AMD's NorthBridge Config MSR, SHOULD ONLY BE WRITTEN TO BY BIOS */

#define	MSR_AMD_NB_CFG	0xc001001f

#define	MSR_BU_CFG	0xc0011023

#define	AMD_NB_CFG_SRQ_HEARTBEAT	(UINT64_C(1) << 20)
#define	AMD_NB_CFG_SRQ_SPR		(UINT64_C(1) << 32)

/* AMD */
#define	MSR_AMD_PATCHLEVEL	0x8b

#ifdef __cplusplus
}
#endif

#endif	/* !_SYS_CONTROLREGS_H */