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/* SPDX-License-Identifier: GPL-2.0-only */
/* This file is part of the coreboot project. */
#ifndef __AMD_PSP_DEF_H__
#define __AMD_PSP_DEF_H__
#include <types.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
/* generic PSP interface status */
#define STATUS_INITIALIZED 0x1
#define STATUS_ERROR 0x2
#define STATUS_TERMINATED 0x4
#define STATUS_HALT 0x8
#define STATUS_RECOVERY 0x10
/* psp_mbox consists of hardware registers beginning at PSPx000070
* mbox_command: BIOS->PSP command, cleared by PSP when complete
* mbox_status: BIOS->PSP interface status
* cmd_response: pointer to command/response buffer
*/
struct psp_mbox {
u32 mbox_command;
u32 mbox_status;
u64 cmd_response; /* definition conflicts w/BKDG but matches agesa */
} __packed;
/* command/response format, BIOS builds this in memory
* mbox_buffer_header: generic header
* mbox_buffer: command-specific buffer format
*
* AMD reference code aligns and pads all buffers to 32 bytes.
*/
struct mbox_buffer_header {
u32 size; /* total size of buffer */
u32 status; /* command status, filled by PSP if applicable */
} __packed;
/*
* command-specific buffer definitions: see NDA document #54267
* The following commands need a buffer definition if they are to be used.
* All other commands will work with the default buffer.
* MBOX_BIOS_CMD_SMM_INFO MBOX_BIOS_CMD_PSP_QUERY
* MBOX_BIOS_CMD_SX_INFO MBOX_BIOS_CMD_S3_DATA_INFO
* MBOX_BIOS_CMD_RSM_INFO
*/
struct mbox_default_buffer { /* command-response buffer unused by command */
struct mbox_buffer_header header;
} __attribute__((packed, aligned(32)));
struct mbox_cmd_sx_info_buffer {
struct mbox_buffer_header header;
u8 sleep_type;
} __attribute__((packed, aligned(32)));
#define PSP_INIT_TIMEOUT 10000 /* 10 seconds */
#define PSP_CMD_TIMEOUT 1000 /* 1 second */
#endif /* __AMD_PSP_DEF_H__ */
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