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soc/amd/cezanne: Enable system wake up from ACPI S3 using USB keyboard

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TEST: Tested by entering ACPI S3 sleep state and pressing any key
on USB keyboard wakes up the system.

Change-Id: Ieed635a7199f53c2e7c69c8f17b3ef50b76b8d91
Signed-off-by: Anand Vaikar <a.vaikar2021@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/87287
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This commit is contained in:
Anand Vaikar 2025-04-12 13:16:28 +05:30 • committed by Felix Held
commit bdbf345eb8
2 changed files with 6 additions and 1 deletions
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1
src/soc/amd/cezanne/include/soc/smu.h
View file

@ -12,6 +12,7 @@
enum smu_message_id {
SMC_MSG_S3ENTRY = 0x0b,
SMC_MSG_USBS3ENTRY = 0x27,
};
/*

6
src/soc/amd/cezanne/smihandler.c
View file

@ -6,6 +6,7 @@
#include <amdblocks/psp.h>
#include <amdblocks/smi.h>
#include <amdblocks/smm.h>
#include <amdblocks/smu.h>
#include <arch/hlt.h>
#include <arch/io.h>
#include <console/console.h>
@ -29,6 +30,7 @@ static void fch_slp_typ_handler(void)
uint32_t pci_ctrl, reg32;
uint16_t pm1cnt, reg16;
uint8_t slp_typ, rst_ctrl;
struct smu_payload msg = { 0 };
/* Figure out SLP_TYP */
pm1cnt = acpi_read16(MMIO_ACPI_PM1_CNT_BLK);
@ -96,8 +98,10 @@ static void fch_slp_typ_handler(void)
reg32);
} /* if (CONFIG(ELOG_GSMI)) */
if (slp_typ == ACPI_S3)
if (slp_typ == ACPI_S3) {
psp_notify_sx_info(ACPI_S3);
send_smu_message(SMC_MSG_USBS3ENTRY, &msg);
}
smu_sx_entry(); /* Leave SlpTypeEn clear, SMU will set */
printk(BIOS_ERR, "System did not go to sleep\n");