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soc/amd/common/psp: Add notify_sx_info 

Add the command to tell the PSP the system is going to a sleep
state.

BUG=b:153677737

Change-Id: I50da358e1f8438b46dbb1bda593becf6dd4549ea
Signed-off-by: Marshall Dawson <marshalldawson3rd@gmail.com>
Reviewed-on: https://chromium-review.googlesource.com/2020367
Reviewed-on: https://chromium-review.googlesource.com/2110764
Reviewed-on: https://chromium-review.googlesource.com/2121159
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/40016
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Raul Rangel <rrangel@chromium.org>
This commit is contained in:
Felix Held 2020-04-01 22:06:39 +02:00 committed by Felix Held
parent e8ffa9ffd3
commit 43126edc3a
3 changed files with 47 additions and 12 deletions
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6
src/soc/amd/common/block/include/amdblocks/psp.h
View File

@ -67,6 +67,12 @@ enum psp_blob_type {
BLOB_SMU_FW2,
};
/*
* Notify PSP that the system is entering a sleep state. sleep_state uses the
* same definition as Pm1Cnt[SlpTyp], typically 0, 1, 3, 4, 5.
*/
void psp_notify_sx_info(u8 sleep_type);
int psp_load_named_blob(enum psp_blob_type type, const char *name);
#endif /* __AMD_PSP_H__ */

25
src/soc/amd/common/block/psp/psp_def.h
View File

@ -9,18 +9,19 @@
#include <amdblocks/psp.h>
/* x86 to PSP commands */
#define MBOX_BIOS_CMD_DRAM_INFO 0x01
#define MBOX_BIOS_CMD_SMM_INFO 0x02
#define MBOX_BIOS_CMD_SX_INFO 0x03
#define MBOX_BIOS_CMD_RSM_INFO 0x04
#define MBOX_BIOS_CMD_PSP_QUERY 0x05
#define MBOX_BIOS_CMD_BOOT_DONE 0x06
#define MBOX_BIOS_CMD_CLEAR_S3_STS 0x07
#define MBOX_BIOS_CMD_S3_DATA_INFO 0x08
#define MBOX_BIOS_CMD_NOP 0x09
#define MBOX_BIOS_CMD_SMU_FW 0x19
#define MBOX_BIOS_CMD_SMU_FW2 0x1a
#define MBOX_BIOS_CMD_ABORT 0xfe
#define MBOX_BIOS_CMD_DRAM_INFO 0x01
#define MBOX_BIOS_CMD_SMM_INFO 0x02
#define MBOX_BIOS_CMD_SX_INFO 0x03
#define MBOX_BIOS_CMD_SX_INFO_SLEEP_TYPE_MAX 0x07
#define MBOX_BIOS_CMD_RSM_INFO 0x04
#define MBOX_BIOS_CMD_PSP_QUERY 0x05
#define MBOX_BIOS_CMD_BOOT_DONE 0x06
#define MBOX_BIOS_CMD_CLEAR_S3_STS 0x07
#define MBOX_BIOS_CMD_S3_DATA_INFO 0x08
#define MBOX_BIOS_CMD_NOP 0x09
#define MBOX_BIOS_CMD_SMU_FW 0x19
#define MBOX_BIOS_CMD_SMU_FW2 0x1a
#define MBOX_BIOS_CMD_ABORT 0xfe
/* generic PSP interface status, v1 */
#define PSPV1_STATUS_INITIALIZED BIT(0)

28
src/soc/amd/common/block/psp/psp_smm.c
View File

@ -76,3 +76,31 @@ int psp_notify_smm(void)
return cmd_status;
}
/* Notify PSP the system is going to a sleep state. */
void psp_notify_sx_info(u8 sleep_type)
{
int cmd_status;
struct mbox_cmd_sx_info_buffer *buffer;
/* PSP verifies that this buffer is at the address specified in psp_notify_smm() */
buffer = (struct mbox_cmd_sx_info_buffer *)c2p_buffer.buffer;
memset(buffer, 0, sizeof(*buffer));
buffer->header.size = sizeof(*buffer);
if (sleep_type > MBOX_BIOS_CMD_SX_INFO_SLEEP_TYPE_MAX) {
printk(BIOS_ERR, "PSP: BUG: invalid sleep type 0x%x requested\n", sleep_type);
return;
}
printk(BIOS_DEBUG, "PSP: Prepare to enter sleep state %d... ", sleep_type);
buffer->sleep_type = sleep_type;
set_smm_flag();
cmd_status = send_psp_command(MBOX_BIOS_CMD_SX_INFO, buffer);
clear_smm_flag();
/* buffer's status shouldn't change but report it if it does */
psp_print_cmd_status(cmd_status, (struct mbox_default_buffer *)buffer);
}