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authorzbao <fishbaozi@gmail.com>2012-04-13 13:42:15 +0800
committerMarc Jones <marcj303@gmail.com>2012-04-16 18:22:47 +0200
commitf72237346d9a0894b4675f0b6915da6fdcccd31e (patch)
tree3ccf4333bd94f38a68f3b76d3f161d27072316b5 /src/cpu/amd/agesa
parentcaf494c83170e97b192e2174bc461482699a3712 (diff)
downloadcoreboot-f72237346d9a0894b4675f0b6915da6fdcccd31e.tar.xz
S3 code in coreboot public folder.
1. Move the Stack to high memory. 2. Restore the MTRR before Coreboot jump to the wakeup vector. Change-Id: I9872e02fcd7eed98e7f630aa29ece810ac32d55a Signed-off-by: Zheng Bao <zheng.bao@amd.com> Signed-off-by: zbao <fishbaozi@gmail.com> Reviewed-on: http://review.coreboot.org/623 Tested-by: build bot (Jenkins) Reviewed-by: Marc Jones <marcj303@gmail.com>
Diffstat (limited to 'src/cpu/amd/agesa')
-rw-r--r--src/cpu/amd/agesa/Makefile.inc2
-rwxr-xr-xsrc/cpu/amd/agesa/cache_as_ram.inc7
-rw-r--r--src/cpu/amd/agesa/family14/Kconfig5
-rw-r--r--src/cpu/amd/agesa/family14/model_14_init.c125
-rw-r--r--src/cpu/amd/agesa/s3_resume.c326
-rw-r--r--src/cpu/amd/agesa/s3_resume.h42
6 files changed, 453 insertions, 54 deletions
diff --git a/src/cpu/amd/agesa/Makefile.inc b/src/cpu/amd/agesa/Makefile.inc
index fb536ddc53..696173daae 100644
--- a/src/cpu/amd/agesa/Makefile.inc
+++ b/src/cpu/amd/agesa/Makefile.inc
@@ -21,5 +21,7 @@ subdirs-$(CONFIG_CPU_AMD_AGESA_FAMILY12) += family12
subdirs-$(CONFIG_CPU_AMD_AGESA_FAMILY14) += family14
subdirs-$(CONFIG_CPU_AMD_AGESA_FAMILY15) += family15
+romstage-$(CONFIG_HAVE_ACPI_RESUME) += s3_resume.c
+ramstage-$(CONFIG_HAVE_ACPI_RESUME) += s3_resume.c
ramstage-y += apic_timer.c
cpu_incs += $(src)/cpu/amd/agesa/cache_as_ram.inc
diff --git a/src/cpu/amd/agesa/cache_as_ram.inc b/src/cpu/amd/agesa/cache_as_ram.inc
index f328db405e..2124bf3be8 100755
--- a/src/cpu/amd/agesa/cache_as_ram.inc
+++ b/src/cpu/amd/agesa/cache_as_ram.inc
@@ -86,6 +86,13 @@ disable_cache_as_ram:
/* Save return stack */
movd %esp, %xmm0
+ /* Disable cache */
+ movl %cr0, %eax
+ orl $(1 << 30), %eax
+ movl %eax, %cr0
+
+ invd
+
AMD_DISABLE_STACK
/* Restore the return stack */
diff --git a/src/cpu/amd/agesa/family14/Kconfig b/src/cpu/amd/agesa/family14/Kconfig
index 702270c1cc..6713660ff8 100644
--- a/src/cpu/amd/agesa/family14/Kconfig
+++ b/src/cpu/amd/agesa/family14/Kconfig
@@ -67,3 +67,8 @@ config HAVE_INIT_TIMER
default y
depends on CPU_AMD_AGESA_FAMILY14
+config HIGH_SCRATCH_MEMORY_SIZE
+ hex
+ # Assume the maximum size of stack as (0xA0000 - 0x30000 + 0x1000)
+ default 0x71000
+ depends on CPU_AMD_AGESA_FAMILY14
diff --git a/src/cpu/amd/agesa/family14/model_14_init.c b/src/cpu/amd/agesa/family14/model_14_init.c
index 577da1ba0d..d90695af4a 100644
--- a/src/cpu/amd/agesa/family14/model_14_init.c
+++ b/src/cpu/amd/agesa/family14/model_14_init.c
@@ -32,6 +32,8 @@
#include <cpu/x86/cache.h>
#include <cpu/x86/mtrr.h>
#include <cpu/amd/amdfam14.h>
+#include <arch/acpi.h>
+#include <cpu/amd/agesa/s3_resume.h>
#define MCI_STATUS 0x401
@@ -57,69 +59,84 @@ void wrmsr_amd(u32 index, msr_t msr)
static void model_14_init(device_t dev)
{
- printk(BIOS_DEBUG, "Model 14 Init.\n");
-
- u8 i;
- msr_t msr;
- int msrno;
+ u32 i;
+ msr_t msr;
#if CONFIG_LOGICAL_CPUS == 1
- u32 siblings;
+ u32 siblings;
+#endif
+ printk(BIOS_DEBUG, "Model 14 Init.\n");
+
+ disable_cache ();
+ /*
+ * AGESA sets the MTRRs main MTRRs. The shadow area needs to be set
+ * by coreboot. The amd_setup_mtrrs should work, but needs debug on fam14.
+ * TODO:
+ * amd_setup_mtrrs();
+ */
+
+ /* Enable access to AMD RdDram and WrDram extension bits */
+ msr = rdmsr(SYSCFG_MSR);
+ msr.lo |= SYSCFG_MSR_MtrrFixDramModEn;
+ msr.lo &= ~SYSCFG_MSR_MtrrFixDramEn;
+ wrmsr(SYSCFG_MSR, msr);
+
+ /* Set shadow WB, RdMEM, WrMEM */
+ msr.lo = msr.hi = 0;
+ wrmsr (0x259, msr);
+ msr.hi = msr.lo = 0x1e1e1e1e;
+ wrmsr(0x250, msr);
+ wrmsr(0x258, msr);
+ for (i = 0x268; i <= 0x26f; i++)
+ wrmsr(i, msr);
+
+ msr = rdmsr(SYSCFG_MSR);
+ msr.lo &= ~SYSCFG_MSR_MtrrFixDramModEn;
+ msr.lo |= SYSCFG_MSR_MtrrFixDramEn;
+ wrmsr(SYSCFG_MSR, msr);
+
+#if CONFIG_HAVE_ACPI_RESUME == 1
+ if (acpi_slp_type == 3)
+ restore_mtrr();
#endif
- disable_cache ();
- /* Enable access to AMD RdDram and WrDram extension bits */
- msr = rdmsr(SYSCFG_MSR);
- msr.lo |= SYSCFG_MSR_MtrrFixDramModEn;
- wrmsr(SYSCFG_MSR, msr);
-
- // BSP: make a0000-bffff UC, c0000-fffff WB, same as OntarioApMtrrSettingsList for APs
- msr.lo = msr.hi = 0;
- wrmsr (0x259, msr);
- msr.lo = msr.hi = 0x1e1e1e1e;
- for (msrno = 0x268; msrno <= 0x26f; msrno++)
- wrmsr (msrno, msr);
-
- /* disable access to AMD RdDram and WrDram extension bits */
- msr = rdmsr(SYSCFG_MSR);
- msr.lo &= ~SYSCFG_MSR_MtrrFixDramModEn;
- wrmsr(SYSCFG_MSR, msr);
- enable_cache ();
-
- /* zero the machine check error status registers */
- msr.lo = 0;
- msr.hi = 0;
- for (i = 0; i < 6; i++) {
- wrmsr(MCI_STATUS + (i * 4), msr);
- }
-
- /* Enable the local cpu apics */
- setup_lapic();
+ x86_mtrr_check();
+ x86_enable_cache();
+
+ /* zero the machine check error status registers */
+ msr.lo = 0;
+ msr.hi = 0;
+ for (i = 0; i < 6; i++) {
+ wrmsr(MCI_STATUS + (i * 4), msr);
+ }
+
+ /* Enable the local cpu apics */
+ setup_lapic();
#if CONFIG_LOGICAL_CPUS == 1
- siblings = cpuid_ecx(0x80000008) & 0xff;
-
- if (siblings > 0) {
- msr = rdmsr_amd(CPU_ID_FEATURES_MSR);
- msr.lo |= 1 << 28;
- wrmsr_amd(CPU_ID_FEATURES_MSR, msr);
-
- msr = rdmsr_amd(CPU_ID_EXT_FEATURES_MSR);
- msr.hi |= 1 << (33 - 32);
- wrmsr_amd(CPU_ID_EXT_FEATURES_MSR, msr);
- }
- printk(BIOS_DEBUG, "siblings = %02d, ", siblings);
+ siblings = cpuid_ecx(0x80000008) & 0xff;
+
+ if (siblings > 0) {
+ msr = rdmsr_amd(CPU_ID_FEATURES_MSR);
+ msr.lo |= 1 << 28;
+ wrmsr_amd(CPU_ID_FEATURES_MSR, msr);
+
+ msr = rdmsr_amd(CPU_ID_EXT_FEATURES_MSR);
+ msr.hi |= 1 << (33 - 32);
+ wrmsr_amd(CPU_ID_EXT_FEATURES_MSR, msr);
+ }
#endif
- /* DisableCf8ExtCfg */
- msr = rdmsr(NB_CFG_MSR);
- msr.hi &= ~(1 << (46 - 32));
- wrmsr(NB_CFG_MSR, msr);
+ /* DisableCf8ExtCfg */
+ msr = rdmsr(NB_CFG_MSR);
+ msr.hi &= ~(1 << (46 - 32));
+ wrmsr(NB_CFG_MSR, msr);
+ /* Write protect SMM space with SMMLOCK. */
+ msr = rdmsr(HWCR_MSR);
+ msr.lo |= (1 << 0);
+ wrmsr(HWCR_MSR, msr);
- /* Write protect SMM space with SMMLOCK. */
- msr = rdmsr(HWCR_MSR);
- msr.lo |= (1 << 0);
- wrmsr(HWCR_MSR, msr);
+ printk(BIOS_SPEW, "%s done.\n", __func__);
}
static struct device_operations cpu_dev_ops = {
diff --git a/src/cpu/amd/agesa/s3_resume.c b/src/cpu/amd/agesa/s3_resume.c
new file mode 100644
index 0000000000..16c959a570
--- /dev/null
+++ b/src/cpu/amd/agesa/s3_resume.c
@@ -0,0 +1,326 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2012 Advanced Micro Devices, 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; version 2 of the License.
+ *
+ * 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "AGESA.h"
+#include "amdlib.h"
+#include <console/console.h>
+#include <cpu/x86/msr.h>
+#include <cpu/x86/mtrr.h>
+#include <cpu/amd/mtrr.h>
+#include <cpu/x86/cache.h>
+#if CONFIG_WRITE_HIGH_TABLES
+#include <cbmem.h>
+#endif
+#include <device/device.h>
+#include <device/pci.h>
+#include <device/pci_ops.h>
+#include <arch/io.h>
+#include <arch/acpi.h>
+#include <string.h>
+#include "Porting.h"
+#include "BiosCallOuts.h"
+#include "s3_resume.h"
+#include "agesawrapper.h"
+
+#ifndef __PRE_RAM__
+#include "spi.h"
+#endif
+
+void restore_mtrr(void)
+{
+ u32 msr;
+ volatile UINT32 *msrPtr = (volatile UINT32 *)S3_DATA_MTRR_POS;
+ msr_t msr_data;
+
+ printk(BIOS_SPEW, "%s\n", __func__);
+
+ disable_cache();
+
+ /* Enable access to AMD RdDram and WrDram extension bits */
+ msr_data = rdmsr(SYS_CFG);
+ msr_data.lo |= SYSCFG_MSR_MtrrFixDramModEn;
+ wrmsr(SYS_CFG, msr_data);
+
+ /* Now restore the Fixed MTRRs */
+ msr_data.lo = *msrPtr;
+ msrPtr ++;
+ msr_data.hi = *msrPtr;
+ msrPtr ++;
+ wrmsr(0x250, msr_data);
+
+ msr_data.lo = *msrPtr;
+ msrPtr ++;
+ msr_data.hi = *msrPtr;
+ msrPtr ++;
+ wrmsr(0x258, msr_data);
+
+ msr_data.lo = *msrPtr;
+ msrPtr ++;
+ msr_data.hi = *msrPtr;
+ msrPtr ++;
+ wrmsr(0x259, msr_data);
+
+ for (msr = 0x268; msr <= 0x26F; msr++) {
+ msr_data.lo = *msrPtr;
+ msrPtr ++;
+ msr_data.hi = *msrPtr;
+ msrPtr ++;
+ wrmsr(msr, msr_data);
+ }
+
+ /* Disable access to AMD RdDram and WrDram extension bits */
+ msr_data = rdmsr(SYS_CFG);
+ msr_data.lo &= ~SYSCFG_MSR_MtrrFixDramModEn;
+ wrmsr(SYS_CFG, msr_data);
+
+ /* Restore the Variable MTRRs */
+ for (msr = 0x200; msr <= 0x20F; msr++) {
+ msr_data.lo = *msrPtr;
+ msrPtr ++;
+ msr_data.hi = *msrPtr;
+ msrPtr ++;
+ wrmsr(msr, msr_data);
+ }
+
+ /* Restore SYSCFG MTRR */
+ msr_data.lo = *msrPtr;
+ msrPtr ++;
+ msr_data.hi = *msrPtr;
+ msrPtr ++;
+ wrmsr(SYS_CFG, msr_data);
+}
+
+inline void *backup_resume(void)
+{
+ unsigned long high_ram_base;
+ void *resume_backup_memory;
+
+ /* Start address of high memory tables */
+ high_ram_base = (u32) get_cbmem_toc();
+
+ /*
+ * printk(BIOS_DEBUG, "CBMEM TOC is at: %x\n", (u32_t)high_ram_base);
+ * printk(BIOS_DEBUG, "CBMEM TOC 0-size:%x\n ",(u32_t)(high_ram_base + HIGH_MEMORY_SIZE + 4096));
+ */
+
+ cbmem_reinit((u64) high_ram_base);
+
+ resume_backup_memory = cbmem_find(CBMEM_ID_RESUME);
+ if (((u32) resume_backup_memory == 0)
+ || ((u32) resume_backup_memory == -1)) {
+ printk(BIOS_ERR, "Error: resume_backup_memory: %x\n",
+ (u32) resume_backup_memory);
+ for (;;) ;
+ }
+
+ return resume_backup_memory;
+}
+
+void move_stack_high_mem(void)
+{
+ void *high_stack;
+
+ high_stack = cbmem_find(CBMEM_ID_RESUME_SCRATCH);
+ memcpy(high_stack, (void *)BSP_STACK_BASE_ADDR,
+ (CONFIG_HIGH_SCRATCH_MEMORY_SIZE - BIOS_HEAP_SIZE));
+
+ __asm__
+ volatile ("add %0, %%esp; add %0, %%ebp; invd"::"g"
+ (high_stack - BSP_STACK_BASE_ADDR)
+ :);
+}
+
+void OemAgesaSaveMtrr(void)
+{
+#ifndef __PRE_RAM__
+ u32 spi_address;
+ msr_t msr_data;
+ device_t dev;
+ u32 nvram_pos = S3_DATA_MTRR_POS;
+ u32 i;
+
+ dev = dev_find_slot(0, PCI_DEVFN(0x14, 3));
+ spi_address = pci_read_config32(dev, 0xA0) & ~0x1F;
+
+ /* Enable access to AMD RdDram and WrDram extension bits */
+ msr_data = rdmsr(SYS_CFG);
+ msr_data.lo |= SYSCFG_MSR_MtrrFixDramModEn;
+ wrmsr(SYS_CFG, msr_data);
+
+ /* Fixed MTRRs */
+ msr_data = rdmsr(0x250);
+ dword_noneAAI_program((u8 *) spi_address, nvram_pos, msr_data.lo);
+ nvram_pos += 4;
+ dword_noneAAI_program((u8 *) spi_address, nvram_pos, msr_data.hi);
+ nvram_pos += 4;
+
+ msr_data = rdmsr(0x258);
+ dword_noneAAI_program((u8 *) spi_address, nvram_pos, msr_data.lo);
+ nvram_pos += 4;
+ dword_noneAAI_program((u8 *) spi_address, nvram_pos, msr_data.hi);
+ nvram_pos += 4;
+
+ msr_data = rdmsr(0x259);
+ dword_noneAAI_program((u8 *) spi_address, nvram_pos, msr_data.lo);
+ nvram_pos += 4;
+ dword_noneAAI_program((u8 *) spi_address, nvram_pos, msr_data.hi);
+ nvram_pos += 4;
+
+ for (i = 0x268; i < 0x270; i++) {
+ msr_data = rdmsr(i);
+ dword_noneAAI_program((u8 *) spi_address, nvram_pos, msr_data.lo);
+ nvram_pos += 4;
+ dword_noneAAI_program((u8 *) spi_address, nvram_pos, msr_data.hi);
+ nvram_pos += 4;
+ }
+
+ /* Disable access to AMD RdDram and WrDram extension bits */
+ msr_data = rdmsr(SYS_CFG);
+ msr_data.lo &= ~SYSCFG_MSR_MtrrFixDramModEn;
+ wrmsr(SYS_CFG, msr_data);
+
+ /* Variable MTRRs */
+ for (i = 0x200; i < 0x210; i++) {
+ msr_data = rdmsr(i);
+ dword_noneAAI_program((u8 *) spi_address, nvram_pos, msr_data.lo);
+ nvram_pos += 4;
+ dword_noneAAI_program((u8 *) spi_address, nvram_pos, msr_data.hi);
+ nvram_pos += 4;
+ }
+
+ /* SYS_CFG */
+ msr_data = rdmsr(0xC0010010);
+ dword_noneAAI_program((u8 *) spi_address, nvram_pos, msr_data.lo);
+ nvram_pos += 4;
+ dword_noneAAI_program((u8 *) spi_address, nvram_pos, msr_data.hi);
+ nvram_pos += 4;
+
+ /* TOM */
+ msr_data = rdmsr(0xC001001A);
+ dword_noneAAI_program((u8 *) spi_address, nvram_pos, msr_data.lo);
+ nvram_pos += 4;
+ dword_noneAAI_program((u8 *) spi_address, nvram_pos, msr_data.hi);
+ nvram_pos += 4;
+
+ /* TOM2 */
+ msr_data = rdmsr(0xC001001D);
+ dword_noneAAI_program((u8 *) spi_address, nvram_pos, msr_data.lo);
+ nvram_pos += 4;
+ dword_noneAAI_program((u8 *) spi_address, nvram_pos, msr_data.hi);
+ nvram_pos += 4;
+
+#endif
+}
+
+void OemAgesaGetS3Info(S3_DATA_TYPE S3DataType, u32 *DataSize, void **Data)
+{
+ AMD_CONFIG_PARAMS StdHeader;
+ if (S3DataType == S3DataTypeNonVolatile) {
+ *Data = (void *)S3_DATA_NONVOLATILE_POS;
+ *DataSize = *(UINTN *) (*Data);
+ *Data += 4;
+ } else {
+ *DataSize = *(UINTN *) S3_DATA_VOLATILE_POS;
+ *Data = (void *) GetHeapBase(&StdHeader);
+ memcpy((void *)(*Data), (void *)(S3_DATA_VOLATILE_POS + 4), *DataSize);
+ }
+}
+
+#ifndef __PRE_RAM__
+u32 OemAgesaSaveS3Info(S3_DATA_TYPE S3DataType, u32 DataSize, void *Data)
+{
+
+ u32 pos = S3_DATA_VOLATILE_POS;
+ u32 spi_address, data;
+ u32 nvram_pos;
+ device_t dev;
+
+ if (S3DataType == S3DataTypeNonVolatile) {
+ pos = S3_DATA_NONVOLATILE_POS;
+ } else { /* S3DataTypeVolatile */
+ pos = S3_DATA_VOLATILE_POS;
+ }
+
+ dev = dev_find_slot(0, PCI_DEVFN(0x14, 3));
+ spi_address = pci_read_config32(dev, 0xA0) & ~0x1F;
+
+ /* printk(BIOS_DEBUG, "spi_address=%x\n", spi_address); */
+ read_spi_id((u8 *) spi_address);
+ write_spi_status((u8 *)spi_address, 0);
+ if (S3DataType == S3DataTypeNonVolatile) {
+ sector_erase_spi((u8 *) spi_address, S3_DATA_NONVOLATILE_POS);
+ } else {
+ sector_erase_spi((u8 *) spi_address, S3_DATA_VOLATILE_POS);
+ sector_erase_spi((u8 *) spi_address,
+ S3_DATA_VOLATILE_POS + 0x1000);
+ sector_erase_spi((u8 *) spi_address,
+ S3_DATA_VOLATILE_POS + 0x2000);
+ sector_erase_spi((u8 *) spi_address,
+ S3_DATA_VOLATILE_POS + 0x3000);
+ }
+
+ nvram_pos = 0;
+ dword_noneAAI_program((u8 *) spi_address, nvram_pos + pos, DataSize);
+
+ for (nvram_pos = 0; nvram_pos < DataSize; nvram_pos += 4) {
+ data = *(u32 *) (Data + nvram_pos);
+ dword_noneAAI_program((u8 *) spi_address, nvram_pos + pos + 4,
+ *(u32 *) (Data + nvram_pos));
+ }
+
+ return AGESA_SUCCESS;
+}
+#endif
+
+void set_resume_cache(void)
+{
+ msr_t msr;
+
+ /* disable fixed mtrr for now, it will be enabled by mtrr restore */
+ msr = rdmsr(SYSCFG_MSR);
+ msr.lo &= ~(SYSCFG_MSR_MtrrFixDramEn | SYSCFG_MSR_MtrrFixDramModEn);
+ wrmsr(SYSCFG_MSR, msr);
+
+ /* Enable caching for 0 - coreboot ram using variable mtrr */
+ msr.lo = 0 | MTRR_TYPE_WRBACK;
+ msr.hi = 0;
+ wrmsr(MTRRphysBase_MSR(0), msr);
+ msr.lo = ~(CONFIG_RAMTOP - 1) | MTRRphysMaskValid;
+ msr.hi = (1 << (CONFIG_CPU_ADDR_BITS - 32)) - 1;
+ wrmsr(MTRRphysMask_MSR(0), msr);
+
+ /* Set the default memory type and disable fixed and enable variable MTRRs */
+ msr.hi = 0;
+ msr.lo = (1 << 11);
+ wrmsr(MTRRdefType_MSR, msr);
+
+ enable_cache();
+}
+
+void s3_resume(void)
+{
+ int status;
+
+ printk(BIOS_DEBUG, "agesawrapper_amds3laterestore ");
+ status = agesawrapper_amds3laterestore();
+ if (status)
+ printk(BIOS_DEBUG, "error level: %x \n", (u32) status);
+ else
+ printk(BIOS_DEBUG, "passed.\n");
+}
diff --git a/src/cpu/amd/agesa/s3_resume.h b/src/cpu/amd/agesa/s3_resume.h
new file mode 100644
index 0000000000..22a72711bf
--- /dev/null
+++ b/src/cpu/amd/agesa/s3_resume.h
@@ -0,0 +1,42 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2011 Advanced Micro Devices, 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; version 2 of the License.
+ *
+ * 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef S3_RESUME_H
+#define S3_RESUME_H
+
+#define S3_DATA_NONVOLATILE_POS 0xFFFF4000
+#define S3_DATA_VOLATILE_POS 0xFFFF0000
+#define S3_DATA_MTRR_POS 0xFFFF3100
+
+typedef enum {
+ S3DataTypeNonVolatile=0, ///< NonVolatile Data Type
+ S3DataTypeVolatile ///< Volatile Data Type
+} S3_DATA_TYPE;
+
+void restore_mtrr(void);
+void s3_resume(void);
+inline void *backup_resume(void);
+void set_resume_cache(void);
+void move_stack_high_mem(void);
+
+u32 OemAgesaSaveS3Info (S3_DATA_TYPE S3DataType, u32 DataSize, void *Data);
+void OemAgesaGetS3Info (S3_DATA_TYPE S3DataType, u32 *DataSize, void **Data);
+void OemAgesaSaveMtrr (void);
+
+#endif