diff options
Diffstat (limited to 'src/cpu/amd/agesa/s3_mtrr.c')
-rw-r--r-- | src/cpu/amd/agesa/s3_mtrr.c | 134 |
1 files changed, 0 insertions, 134 deletions
diff --git a/src/cpu/amd/agesa/s3_mtrr.c b/src/cpu/amd/agesa/s3_mtrr.c deleted file mode 100644 index 519198913f..0000000000 --- a/src/cpu/amd/agesa/s3_mtrr.c +++ /dev/null @@ -1,134 +0,0 @@ -/* - * 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. - */ - -#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); -} |