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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>
This commit is contained in:
zbao 2012-04-13 13:42:15 +08:00 committed by Marc Jones
parent caf494c831
commit f72237346d
12 changed files with 525 additions and 71 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
src/Kconfig
View File

@ -222,6 +222,10 @@ config HAVE_INIT_TIMER
default n if UDELAY_IO
default y
config HIGH_SCRATCH_MEMORY_SIZE
hex
default 0x0
config HAVE_MAINBOARD_RESOURCES
bool
default n

1
src/arch/x86/boot/tables.c
View File

@ -237,6 +237,7 @@ struct lb_memory *write_tables(void)
* the result right now. If it fails, ACPI resume will be disabled.
*/
cbmem_add(CBMEM_ID_RESUME, HIGH_MEMORY_SAVE);
cbmem_add(CBMEM_ID_RESUME_SCRATCH, CONFIG_HIGH_SCRATCH_MEMORY_SIZE);
#endif
#if CONFIG_MULTIBOOT

2
src/cpu/amd/agesa/Makefile.inc
View File

@ -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

7
src/cpu/amd/agesa/cache_as_ram.inc
View File

@ -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 */

5
src/cpu/amd/agesa/family14/Kconfig
View File

@ -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

41
src/cpu/amd/agesa/family14/model_14_init.c
View File

@ -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
@ -57,33 +59,48 @@ 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;
u32 i;
msr_t msr;
int msrno;
#if CONFIG_LOGICAL_CPUS == 1
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);
// BSP: make a0000-bffff UC, c0000-fffff WB, same as OntarioApMtrrSettingsList for APs
/* Set shadow WB, RdMEM, WrMEM */
msr.lo = msr.hi = 0;
wrmsr (0x259, msr);
msr.lo = msr.hi = 0x1e1e1e1e;
for (msrno = 0x268; msrno <= 0x26f; msrno++)
wrmsr (msrno, msr);
msr.hi = msr.lo = 0x1e1e1e1e;
wrmsr(0x250, msr);
wrmsr(0x258, msr);
for (i = 0x268; i <= 0x26f; i++)
wrmsr(i, msr);
/* disable 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);
enable_cache ();
#if CONFIG_HAVE_ACPI_RESUME == 1
if (acpi_slp_type == 3)
restore_mtrr();
#endif
x86_mtrr_check();
x86_enable_cache();
/* zero the machine check error status registers */
msr.lo = 0;
@ -107,7 +124,6 @@ static void model_14_init(device_t dev)
msr.hi |= 1 << (33 - 32);
wrmsr_amd(CPU_ID_EXT_FEATURES_MSR, msr);
}
printk(BIOS_DEBUG, "siblings = %02d, ", siblings);
#endif
/* DisableCf8ExtCfg */
@ -115,11 +131,12 @@ static void model_14_init(device_t dev)
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);
printk(BIOS_SPEW, "%s done.\n", __func__);
}
static struct device_operations cpu_dev_ops = {

326
src/cpu/amd/agesa/s3_resume.c Normal file
View File

@ -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");
}

42
src/cpu/amd/agesa/s3_resume.h Normal file
View File

@ -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

10
src/include/cbmem.h
View File

@ -28,17 +28,18 @@
#endif
#if CONFIG_HAVE_ACPI_RESUME
#define HIGH_MEMORY_SIZE ((CONFIG_RAMTOP - CONFIG_RAMBASE) + HIGH_MEMORY_DEF_SIZE)
#define HIGH_MEMORY_SAVE ( HIGH_MEMORY_SIZE - HIGH_MEMORY_DEF_SIZE )
#define HIGH_MEMORY_SAVE (CONFIG_RAMTOP - CONFIG_RAMBASE)
#define HIGH_MEMORY_SIZE (HIGH_MEMORY_SAVE + CONFIG_HIGH_SCRATCH_MEMORY_SIZE + HIGH_MEMORY_DEF_SIZE)
/* Delegation of resume backup memory so we don't have to
* (slowly) handle backing up OS memory in romstage.c
*/
#define CBMEM_BOOT_MODE 0x610
#define CBMEM_RESUME_BACKUP 0x614
#else
#else /* CONFIG_HAVE_ACPI_RESUME */
#define HIGH_MEMORY_SIZE HIGH_MEMORY_DEF_SIZE
#endif
#endif /* CONFIG_HAVE_ACPI_RESUME */
#define CBMEM_ID_FREESPACE 0x46524545
#define CBMEM_ID_GDT 0x4c474454
@ -47,6 +48,7 @@
#define CBMEM_ID_PIRQ 0x49525154
#define CBMEM_ID_MPTABLE 0x534d5054
#define CBMEM_ID_RESUME 0x5245534d
#define CBMEM_ID_RESUME_SCRATCH 0x52455343
#define CBMEM_ID_SMBIOS 0x534d4254
#define CBMEM_ID_TIMESTAMP 0x54494d45
#define CBMEM_ID_MRCDATA 0x4d524344

1
src/lib/cbmem.c
View File

@ -254,6 +254,7 @@ void cbmem_list(void)
case CBMEM_ID_PIRQ: printk(BIOS_DEBUG, "IRQ TABLE "); break;
case CBMEM_ID_MPTABLE: printk(BIOS_DEBUG, "SMP TABLE "); break;
case CBMEM_ID_RESUME: printk(BIOS_DEBUG, "ACPI RESUME"); break;
case CBMEM_ID_RESUME_SCRATCH: printk(BIOS_DEBUG, "ACPISCRATCH"); break;
case CBMEM_ID_SMBIOS: printk(BIOS_DEBUG, "SMBIOS "); break;
case CBMEM_ID_TIMESTAMP: printk(BIOS_DEBUG, "TIME STAMP "); break;
case CBMEM_ID_CONSOLE: printk(BIOS_DEBUG, "CONSOLE "); break;

4
src/northbridge/amd/agesa/Kconfig
View File

@ -27,6 +27,10 @@ config CONSOLE_VGA_MULTI
bool
default n
config S3_VGA_ROM_RUN
bool
default n
source src/northbridge/amd/agesa/family10/Kconfig
source src/northbridge/amd/agesa/family12/Kconfig
source src/northbridge/amd/agesa/family14/Kconfig

69
src/northbridge/amd/agesa/family14/northbridge.c
View File

@ -745,20 +745,46 @@ static void domain_set_resources(device_t dev)
printk(BIOS_DEBUG, " adsr - leaving this lovely routine.\n");
}
static void domain_enable_resources(device_t dev) {
extern u8 acpi_slp_type;
static void domain_enable_resources(device_t dev)
{
u32 val;
#if CONFIG_AMD_SB_CIMX
#if CONFIG_HAVE_ACPI_RESUME
if (acpi_slp_type != 3) {
sb_After_Pci_Init();
sb_Mid_Post_Init();
} else {
sb_After_Pci_Restore_Init();
}
#else
sb_After_Pci_Init();
sb_Mid_Post_Init();
#endif
#endif
/* Must be called after PCI enumeration and resource allocation */
printk(BIOS_DEBUG, "\nFam14h - domain_enable_resources: AmdInitMid.\n");
#if CONFIG_HAVE_ACPI_RESUME
if (acpi_slp_type != 3) {
printk(BIOS_DEBUG, "agesawrapper_amdinitmid ");
val = agesawrapper_amdinitmid ();
if (val) {
printk(BIOS_DEBUG, "agesawrapper_amdinitmid failed: %x \n", val);
if (val)
printk(BIOS_DEBUG, "error level: %x \n", val);
else
printk(BIOS_DEBUG, "passed.\n");
}
#else
printk(BIOS_DEBUG, "agesawrapper_amdinitmid ");
val = agesawrapper_amdinitmid ();
if (val)
printk(BIOS_DEBUG, "error level: %x \n", val);
else
printk(BIOS_DEBUG, "passed.\n");
#endif
printk(BIOS_DEBUG, " ader - leaving domain_enable_resources.\n");
}
@ -788,25 +814,42 @@ static void cpu_bus_set_resources(device_t dev) {
pci_dev_set_resources(dev);
}
static void cpu_bus_init(device_t dev) {
struct device_path cpu_path;
static u32 cpu_bus_scan(device_t dev, u32 max)
{
device_t cpu;
int apic_id;
struct device_path cpu_path;
int apic_id, cores_found;
initialize_cpus(dev->link_list);
/* There is only one node for fam14, but there may be multiple cores. */
cpu = dev_find_slot(0, PCI_DEVFN(0x18, 0));
if (!cpu)
printk(BIOS_ERR, "ERROR: %02x:%02x.0 not found", 0, 0x18);
/* Build the AP cpu device path(s) */
for (apic_id = 1; apic_id < CONFIG_MAX_CPUS; apic_id++) {
cores_found = (pci_read_config32(dev_find_slot(0,PCI_DEVFN(0x18,0x3)), 0xe8) >> 12) & 3;
printk(BIOS_DEBUG, " AP siblings=%d\n", cores_found);
for (apic_id = 0; apic_id <= cores_found; apic_id++) {
cpu_path.type = DEVICE_PATH_APIC;
cpu_path.apic.apic_id = apic_id;
cpu = alloc_dev(dev->link_list, &cpu_path);
if (!cpu)
return;
cpu = alloc_find_dev(dev->link_list, &cpu_path);
if (cpu) {
cpu->enabled = 1;
cpu->path.apic.node_id = 0;
cpu->path.apic.core_id = apic_id;
printk(BIOS_DEBUG, "CPU: %s %s\n",
dev_path(cpu), cpu->enabled?"enabled":"disabled");
} else {
cpu->enabled = 0;
}
}
return max;
}
static void cpu_bus_init(device_t dev)
{
initialize_cpus(dev->link_list);
}
/* North Bridge Structures */
@ -844,7 +887,7 @@ static struct device_operations cpu_bus_ops = {
.set_resources = cpu_bus_set_resources,
.enable_resources = NULL,
.init = cpu_bus_init,
.scan_bus = NULL,
.scan_bus = cpu_bus_scan,
};
static void root_complex_enable_dev(struct device *dev) {