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sb/intel/common/pmclib: Use pmbase functions

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Change-Id: Ic0be2c1ffaadcc6212c548332d60d40b405abbda
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/52939
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Rudolph <siro@das-labor.org>
This commit is contained in:
Arthur Heymans
2021-05-05 13:43:15 +02:00
committed by Patrick Georgi
parent a2c51158fe
commit 9575c08345
1 changed files with 11 additions and 17 deletions
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28
src/southbridge/intel/common/pmclib.c
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@@ -1,5 +1,6 @@
/* SPDX-License-Identifier: GPL-2.0-only */
#include <bootmode.h>
#include <stdint.h>
#include <acpi/acpi.h>
#include <console/console.h>
@@ -8,31 +9,24 @@
#include "pmbase.h"
#include "pmutil.h"
static void clear_power_state(void)
{
uint32_t pm1_cnt = read_pmbase32(PM1_CNT);
write_pmbase32(PM1_CNT, pm1_cnt & ~SLP_TYP);
}
int southbridge_detect_s3_resume(void)
{
u32 pm1_cnt;
u16 pm1_sts;
int is_s3 = 0;
/* Check PM1_STS[15] to see if we are waking from Sx */
pm1_sts = read_pmbase16(PM1_STS);
if (pm1_sts & WAK_STS) {
/* Read PM1_CNT[12:10] to determine which Sx state */
pm1_cnt = read_pmbase32(PM1_CNT);
if (((pm1_cnt >> 10) & 7) == SLP_TYP_S3) {
/* Clear SLP_TYPE. */
write_pmbase32(PM1_CNT, pm1_cnt & ~(7 << 10));
is_s3 = 1;
}
}
if (is_s3) {
if (platform_is_resuming()) {
clear_power_state();
if (!acpi_s3_resume_allowed()) {
printk(BIOS_DEBUG, "SB: Resume from S3 detected, but disabled.\n");
return 0;
}
printk(BIOS_DEBUG, "SB: Resume from S3 detected.\n");
return 1;
}
return is_s3;
return 0;
}