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intel/fsp_baytrail: Add S3 suspend/resume Support 

This adds S3 Suspend / Resume support to Intel's Bay Trail FSP

It is based on the "src/soc/intel/baytrail/romstage/romstage.c"
implementation.

Change-Id: If0011068eb7290d1b764c5c4b12c17375fb69008
Signed-off-by: Mohan D'Costa <mohan@ndr.co.jp>
Reviewed-on: http://review.coreboot.org/6937
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Martin Roth <gaumless@gmail.com>
Tested-by: build bot (Jenkins)
This commit is contained in:
Mohan D'Costa 2014-09-18 15:57:06 +09:00 committed by Martin Roth
parent bdae9bedcd
commit ed0c83877f
6 changed files with 133 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
src/drivers/intel/fsp/Kconfig
View File

@ -63,6 +63,7 @@ config ENABLE_FSP_FAST_BOOT
config ENABLE_MRC_CACHE
bool
default y if HAVE_ACPI_RESUME
default n
help
Enabling this feature will cause MRC data to be cached in NV storage.

3
src/soc/intel/fsp_baytrail/acpi/sleepstates.asl
View File

@ -21,5 +21,8 @@
Name(\_S0, Package(){0x0,0x0,0x0,0x0})
// Name(\_S1, Package(){0x1,0x1,0x0,0x0})
#if CONFIG_HAVE_ACPI_RESUME
Name(\_S3, Package(){0x5,0x5,0x0,0x0})
#endif
Name(\_S4, Package(){0x6,0x6,0x0,0x0})
Name(\_S5, Package(){0x7,0x7,0x0,0x0})

1
src/soc/intel/fsp_baytrail/baytrail/romstage.h
View File

@ -33,6 +33,7 @@ void report_platform_info(void);
#include <fsptypes.h>
void romstage_main_continue(EFI_STATUS status, void *hob_list_ptr);
uint32_t chipset_prev_sleep_state(uint32_t clear);
#define NUM_ROMSTAGE_TS 4

33
src/soc/intel/fsp_baytrail/fsp/chipset_fsp_util.c
View File

@ -28,7 +28,11 @@
#include <baytrail/pci_devs.h>
#include <drivers/intel/fsp/fsp_util.h>
#include "../chip.h"
#include <arch/io.h>
#include <baytrail/reset.h>
#include <baytrail/pmc.h>
#include <baytrail/acpi.h>
#include <baytrail/iomap.h>
#ifdef __PRE_RAM__
#include <baytrail/romstage.h>
@ -307,18 +311,43 @@ void chipset_fsp_early_init(FSP_INIT_PARAMS *pFspInitParams,
FSP_INFO_HEADER *fsp_ptr)
{
FSP_INIT_RT_BUFFER *pFspRtBuffer = pFspInitParams->RtBufferPtr;
uint32_t prev_sleep_state;
/* Get previous sleep state but don't clear */
prev_sleep_state = chipset_prev_sleep_state(0);
printk(BIOS_INFO, "prev_sleep_state = S%d\n", prev_sleep_state);
/* Initialize the UPD Data */
GetUpdDefaultFromFsp (fsp_ptr, pFspRtBuffer->Common.UpdDataRgnPtr);
ConfigureDefaultUpdData(pFspRtBuffer->Common.UpdDataRgnPtr);
pFspInitParams->NvsBufferPtr = NULL;
pFspRtBuffer->Common.BootMode = BOOT_WITH_FULL_CONFIGURATION;
#if IS_ENABLED(CONFIG_ENABLE_FSP_FAST_BOOT)
#if IS_ENABLED(CONFIG_ENABLE_MRC_CACHE)
/* Find the fastboot cache that was saved in the ROM */
pFspInitParams->NvsBufferPtr = find_and_set_fastboot_cache();
#endif
if (prev_sleep_state == 3) {
/* S3 resume */
if ( pFspInitParams->NvsBufferPtr == NULL) {
/* If waking from S3 and no cache then. */
printk(BIOS_WARNING, "No MRC cache found in S3 resume path.\n");
post_code(POST_RESUME_FAILURE);
/* Clear Sleep Type */
outl(inl(ACPI_BASE_ADDRESS + PM1_CNT) &
~(SLP_TYP), ACPI_BASE_ADDRESS + PM1_CNT);
/* Reboot */
printk(BIOS_WARNING,"Rebooting..\n" );
warm_reset();
/* Should not reach here.. */
die("Reboot System\n");
}
pFspRtBuffer->Common.BootMode = BOOT_ON_S3_RESUME;
} else {
/* Not S3 resume */
pFspRtBuffer->Common.BootMode = BOOT_WITH_FULL_CONFIGURATION;
}
return;
}

32
src/soc/intel/fsp_baytrail/ramstage.c
View File

@ -18,6 +18,7 @@
*/
#include <arch/cpu.h>
#include <arch/acpi.h>
#include <console/console.h>
#include <cpu/intel/microcode.h>
#include <cpu/x86/cr.h>
@ -25,10 +26,12 @@
#include <device/device.h>
#include <device/pci_def.h>
#include <device/pci_ops.h>
#include <romstage_handoff.h>
#include <stdlib.h>
#include <baytrail/gpio.h>
#include <baytrail/lpc.h>
#include <baytrail/nvs.h>
#include <baytrail/msr.h>
#include <baytrail/pattrs.h>
#include <baytrail/pci_devs.h>
@ -123,6 +126,32 @@ static void fill_in_pattrs(void)
}
static inline void set_acpi_sleep_type(int val)
{
#if CONFIG_HAVE_ACPI_RESUME
acpi_slp_type = val;
#endif
}
static void s3_resume_prepare(void)
{
global_nvs_t *gnvs;
struct romstage_handoff *romstage_handoff;
gnvs = cbmem_add(CBMEM_ID_ACPI_GNVS, sizeof(global_nvs_t));
romstage_handoff = cbmem_find(CBMEM_ID_ROMSTAGE_INFO);
if (romstage_handoff == NULL || romstage_handoff->s3_resume == 0) {
if (gnvs != NULL) {
memset(gnvs, 0, sizeof(global_nvs_t));
}
set_acpi_sleep_type(0);
return;
}
set_acpi_sleep_type(3);
}
void baytrail_init_pre_device(void)
{
struct soc_gpio_config *config;
@ -132,6 +161,9 @@ void baytrail_init_pre_device(void)
/* Allow for SSE instructions to be executed. */
write_cr4(read_cr4() | CR4_OSFXSR | CR4_OSXMMEXCPT);
/* Indicate S3 resume to rest of ramstage. */
s3_resume_prepare();
/* Get GPIO initial states from mainboard */
config = mainboard_get_gpios();
setup_soc_gpios(config);

68
src/soc/intel/fsp_baytrail/romstage/romstage.c
View File

@ -24,6 +24,7 @@
#include <arch/io.h>
#include <arch/cbfs.h>
#include <arch/stages.h>
#include <arch/early_variables.h>
#include <console/console.h>
#include <cbmem.h>
#include <cpu/x86/mtrr.h>
@ -44,6 +45,51 @@
#include <device/pci_def.h>
#include <console/cbmem_console.h>
/* Return 0, 3, 4 or 5 to indicate the previous sleep state. */
uint32_t chipset_prev_sleep_state(uint32_t clear)
{
/* Default to S0. */
uint32_t prev_sleep_state = 0;
uint32_t pm1_sts;
uint32_t pm1_cnt;
uint32_t gen_pmcon1;
/* Read Power State */
pm1_sts = inw(ACPI_BASE_ADDRESS + PM1_STS);
pm1_cnt = inl(ACPI_BASE_ADDRESS + PM1_CNT);
gen_pmcon1 = read32(PMC_BASE_ADDRESS + GEN_PMCON1);
printk(BIOS_DEBUG, "PM1_STS = 0x%x PM1_CNT = 0x%x GEN_PMCON1 = 0x%x\n",
pm1_sts, pm1_cnt, gen_pmcon1);
if (pm1_sts & WAK_STS) {
switch ((pm1_cnt & SLP_TYP) >> SLP_TYP_SHIFT) {
#if CONFIG_HAVE_ACPI_RESUME
case SLP_TYP_S3:
prev_sleep_state = 3;
break;
#endif
case SLP_TYP_S4:
prev_sleep_state = 4;
break;
case SLP_TYP_S5:
prev_sleep_state = 5;
break;
}
/* If set Clear SLP_TYP. */
if (clear == 1) {
outl(pm1_cnt & ~(SLP_TYP), ACPI_BASE_ADDRESS + PM1_CNT);
}
}
if (gen_pmcon1 & (PWR_FLR | SUS_PWR_FLR)) {
prev_sleep_state = 5;
}
return prev_sleep_state;
}
static void program_base_addresses(void)
{
uint32_t reg;
@ -174,6 +220,8 @@ void * asmlinkage main(FSP_INFO_HEADER *fsp_info_header)
void romstage_main_continue(EFI_STATUS status, void *hob_list_ptr) {
int cbmem_was_initted;
void *cbmem_hob_ptr;
uint32_t prev_sleep_state;
struct romstage_handoff *handoff;
#if IS_ENABLED(CONFIG_COLLECT_TIMESTAMPS)
tsc_t after_initram_time = rdtsc();
@ -193,6 +241,10 @@ void romstage_main_continue(EFI_STATUS status, void *hob_list_ptr) {
printk(BIOS_DEBUG, "FSP Status: 0x%0x\n", (u32)status);
/* Get previous sleep state again and clear */
prev_sleep_state = chipset_prev_sleep_state(1);
printk(BIOS_DEBUG, "%s: prev_sleep_state = S%d\n", __func__, prev_sleep_state);
report_platform_info();
#if IS_ENABLED(CONFIG_COLLECT_TIMESTAMPS)
@ -203,16 +255,26 @@ void romstage_main_continue(EFI_STATUS status, void *hob_list_ptr) {
late_mainboard_romstage_entry();
post_code(0x4c);
quick_ram_check();
post_code(0x4d);
/* if S3 resume skip ram check */
if (prev_sleep_state != 3) {
quick_ram_check();
post_code(0x4d);
}
cbmem_was_initted = !cbmem_recovery(0);
cbmem_was_initted = !cbmem_recovery(prev_sleep_state == 3);
/* Save the HOB pointer in CBMEM to be used in ramstage*/
cbmem_hob_ptr = cbmem_add (CBMEM_ID_HOB_POINTER, sizeof(*hob_list_ptr));
*(u32*)cbmem_hob_ptr = (u32)hob_list_ptr;
post_code(0x4e);
handoff = romstage_handoff_find_or_add();
if (handoff != NULL)
handoff->s3_resume = (prev_sleep_state == 3);
else
printk(BIOS_DEBUG, "Romstage handoff structure not added!\n");
#if IS_ENABLED(CONFIG_COLLECT_TIMESTAMPS)
timestamp_init(base_time);
timestamp_reinit();