psp_transfer.h

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/* SPDX-License-Identifier: GPL-2.0-only */
 
/* TODO: Check if this is still correct */
 
#ifndef AMD_SABRINA_PSP_TRANSFER_H
#define AMD_SABRINA_PSP_TRANSFER_H
 
# if (CONFIG_CMOS_RECOVERY_BYTE != 0)
#  define CMOS_RECOVERY_BYTE CONFIG_CMOS_RECOVERY_BYTE
# elif CONFIG(VBOOT_STARTS_BEFORE_BOOTBLOCK)
#  error "Must set CONFIG_CMOS_RECOVERY_BYTE"
# endif
 
#define CMOS_RECOVERY_MAGIC_VAL         0x96
 
#define TRANSFER_INFO_SIZE              64
#define TIMESTAMP_BUFFER_SIZE           0x200
 
#define TRANSFER_MAGIC_VAL              0x50544953
 
/* Bit definitions for the psp_info field in the PSP transfer_info_struct */
#define PSP_INFO_PRODUCTION_MODE        0x00000001UL
#define PSP_INFO_PRODUCTION_SILICON     0x00000002UL
#define PSP_INFO_VALID                  0x80000000UL
 
/* Area for things that would cause errors in a linker script */
#if !defined(__ASSEMBLER__)
#include <stdint.h>
 
struct transfer_info_struct {
        uint32_t        magic_val;              /* Identifier */
        uint32_t        struct_bytes;           /* Size of this structure */
        uint32_t        buffer_size;            /* Size of the transfer buffer area */
 
        /* Offsets from start of transfer buffer */
        uint32_t        workbuf_offset;
        uint32_t        console_offset;
        uint32_t        timestamp_offset;
        uint32_t        fmap_offset;
 
        uint32_t        unused1[5];
 
        /* Fields reserved for the PSP */
        uint64_t        timestamp;              /* Offset 0x30 */
        uint32_t        psp_unused;             /* Offset 0x38 */
        uint32_t        psp_info;               /* Offset 0x3C */
};
 
_Static_assert(sizeof(struct transfer_info_struct) == TRANSFER_INFO_SIZE,
                "TRANSFER_INFO_SIZE is incorrect");
 
/* Make sure the PSP transferred information over to x86 side. */
int transfer_buffer_valid(const struct transfer_info_struct *ptr);
/* Verify vboot work buffer is valid in transfer buffer */
void verify_psp_transfer_buf(void);
/* Display the transfer block's PSP_info data */
void show_psp_transfer_info(void);
/* Replays the pre-x86 cbmem console into the x86 cbmem console */
void replay_transfer_buffer_cbmemc(void);
/* Called by bootblock_c_entry in the VBOOT_STARTS_BEFORE_BOOTBLOCK case */
void boot_with_psp_timestamp(uint64_t base_timestamp);
 
#endif
#endif  /* AMD_SABRINA_PSP_TRANSFER_H */