Kyösti Mälkki (kyosti.malkki@gmail.com) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/8607
-gerrit
commit dbe7f2369d659b4fffa5205f621b9f47ac8471c3 Author: Kyösti Mälkki kyosti.malkki@gmail.com Date: Thu Jan 1 17:51:51 2015 +0200
AGESA: Split S3 support file
Separate it to low-memory backup in romstage and MTRR recovery in ramstage. How much of the MTRR part we really need will be resolved later.
Change-Id: Ic64b3f74cf6ef0954eda6e84754745de81c465b2 Signed-off-by: Kyösti Mälkki kyosti.malkki@gmail.com --- src/cpu/amd/agesa/Makefile.inc | 2 +- src/cpu/amd/agesa/s3_mtrr.c | 138 +++++++++++++++++++++++++++++++++++++++++ src/cpu/amd/agesa/s3_resume.c | 128 -------------------------------------- 3 files changed, 139 insertions(+), 129 deletions(-)
diff --git a/src/cpu/amd/agesa/Makefile.inc b/src/cpu/amd/agesa/Makefile.inc index de4aafa..153b2db 100644 --- a/src/cpu/amd/agesa/Makefile.inc +++ b/src/cpu/amd/agesa/Makefile.inc @@ -25,7 +25,7 @@ subdirs-$(CONFIG_CPU_AMD_AGESA_FAMILY15_RL) += family15rl subdirs-$(CONFIG_CPU_AMD_AGESA_FAMILY16_KB) += family16kb
romstage-y += s3_resume.c -ramstage-y += s3_resume.c +ramstage-y += s3_mtrr.c
cpu_incs += $(src)/cpu/amd/agesa/cache_as_ram.inc
diff --git a/src/cpu/amd/agesa/s3_mtrr.c b/src/cpu/amd/agesa/s3_mtrr.c new file mode 100644 index 0000000..af23125 --- /dev/null +++ b/src/cpu/amd/agesa/s3_mtrr.c @@ -0,0 +1,138 @@ +/* + * 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. + */ + +#include <stdint.h> +#include <cpu/x86/msr.h> +#include <cpu/x86/mtrr.h> +#include <cpu/amd/mtrr.h> +#include <cpu/x86/cache.h> +#include <string.h> +#include "s3_resume.h" + +static void write_mtrr(u8 **p_nvram_pos, unsigned idx) +{ + msr_t msr_data; + msr_data = rdmsr(idx); + + memcpy(*p_nvram_pos, &msr_data, sizeof(msr_data)); + *p_nvram_pos += sizeof(msr_data); +} + +void backup_mtrr(void *mtrr_store, u32 *mtrr_store_size) +{ + u8 *nvram_pos = mtrr_store; + msr_t msr_data; + u32 i; + + /* Enable access to AMD RdDram and WrDram extension bits */ + msr_data = rdmsr(SYSCFG_MSR); + msr_data.lo |= SYSCFG_MSR_MtrrFixDramModEn; + wrmsr(SYSCFG_MSR, msr_data); + + /* Fixed MTRRs */ + write_mtrr(&nvram_pos, 0x250); + write_mtrr(&nvram_pos, 0x258); + write_mtrr(&nvram_pos, 0x259); + + for (i = 0x268; i < 0x270; i++) + write_mtrr(&nvram_pos, i); + + /* Disable access to AMD RdDram and WrDram extension bits */ + msr_data = rdmsr(SYSCFG_MSR); + msr_data.lo &= ~SYSCFG_MSR_MtrrFixDramModEn; + wrmsr(SYSCFG_MSR, msr_data); + + /* Variable MTRRs */ + for (i = 0x200; i < 0x210; i++) + write_mtrr(&nvram_pos, i); + + /* SYSCFG_MSR */ + write_mtrr(&nvram_pos, SYSCFG_MSR); + /* TOM */ + write_mtrr(&nvram_pos, 0xC001001A); + /* TOM2 */ + write_mtrr(&nvram_pos, 0xC001001D); + + *mtrr_store_size = nvram_pos - (u8*) mtrr_store; +} + +void restore_mtrr(void) +{ + volatile u32 *msrPtr = (u32 *) OemS3Saved_MTRR_Storage(); + u32 msr; + msr_t msr_data; + + if (!msrPtr) + return; + + disable_cache(); + + /* Enable access to AMD RdDram and WrDram extension bits */ + msr_data = rdmsr(SYSCFG_MSR); + msr_data.lo |= SYSCFG_MSR_MtrrFixDramModEn; + wrmsr(SYSCFG_MSR, 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(SYSCFG_MSR); + msr_data.lo &= ~SYSCFG_MSR_MtrrFixDramModEn; + wrmsr(SYSCFG_MSR, 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(SYSCFG_MSR, msr_data); +} diff --git a/src/cpu/amd/agesa/s3_resume.c b/src/cpu/amd/agesa/s3_resume.c index 9789cc4..7de2d66 100644 --- a/src/cpu/amd/agesa/s3_resume.c +++ b/src/cpu/amd/agesa/s3_resume.c @@ -17,8 +17,6 @@ * Foundation, Inc. */
-#include <AGESA.h> -#include <Lib/amdlib.h> #include <console/console.h> #include <cpu/x86/msr.h> #include <cpu/x86/mtrr.h> @@ -26,84 +24,10 @@ #include <cpu/amd/mtrr.h> #include <cpu/x86/cache.h> #include <cbmem.h> -#include <device/device.h> -#include <arch/io.h> -#include <arch/acpi.h> #include <string.h> -#include "Porting.h" #include <northbridge/amd/agesa/BiosCallOuts.h> #include "s3_resume.h"
-#ifndef __PRE_RAM__ - -void restore_mtrr(void) -{ - volatile u32 *msrPtr = (u32 *) OemS3Saved_MTRR_Storage(); - u32 msr; - msr_t msr_data; - - if (!msrPtr) - return; - - 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); -} - -#endif - -#ifdef __PRE_RAM__ static void *backup_resume(void) { void *resume_backup_memory; @@ -135,58 +59,7 @@ static void move_stack_high_mem(void) (high_stack - BSP_STACK_BASE_ADDR) :); } -#endif - -#ifndef __PRE_RAM__ -static void write_mtrr(u8 **p_nvram_pos, unsigned idx) -{ - msr_t msr_data; - msr_data = rdmsr(idx); - - memcpy(*p_nvram_pos, &msr_data, sizeof(msr_data)); - *p_nvram_pos += sizeof(msr_data); -} - -void backup_mtrr(void *mtrr_store, u32 *mtrr_store_size) -{ - u8 *nvram_pos = mtrr_store; - msr_t msr_data; - u32 i; - - /* 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 */ - write_mtrr(&nvram_pos, 0x250); - write_mtrr(&nvram_pos, 0x258); - write_mtrr(&nvram_pos, 0x259); - - for (i = 0x268; i < 0x270; i++) - write_mtrr(&nvram_pos, i); - - /* 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++) - write_mtrr(&nvram_pos, i); - - /* SYS_CFG */ - write_mtrr(&nvram_pos, 0xC0010010); - /* TOM */ - write_mtrr(&nvram_pos, 0xC001001A); - /* TOM2 */ - write_mtrr(&nvram_pos, 0xC001001D); - - *mtrr_store_size = nvram_pos - (u8*) mtrr_store; -} -#endif
-#ifdef __PRE_RAM__ static void set_resume_cache(void) { msr_t msr; @@ -236,4 +109,3 @@ void prepare_for_resume(void)
printk(BIOS_DEBUG, "System memory saved. OK to load ramstage.\n"); } -#endif
-
Kyösti Mälkki