| /* SPDX-License-Identifier: GPL-2.0-only WITH Linux-syscall-note */ |
| /* |
| * Userspace interface for AMD Seamless Firmware Servicing (SFS) |
| * |
| * Copyright (C) 2025 Advanced Micro Devices, Inc. |
| * |
| * Author: Ashish Kalra <ashish.kalra@amd.com> |
| */ |
| |
| #ifndef __PSP_SFS_USER_H__ |
| #define __PSP_SFS_USER_H__ |
| |
| #include <linux/types.h> |
| |
| /** |
| * SFS: AMD Seamless Firmware Support (SFS) interface |
| */ |
| |
| #define PAYLOAD_NAME_SIZE 64 |
| #define TEE_EXT_CMD_BUFFER_SIZE 4096 |
| |
| /** |
| * struct sfs_user_get_fw_versions - get current level of base firmware (output). |
| * @blob: current level of base firmware for ASP and patch levels (input/output). |
| * @sfs_status: 32-bit SFS status value (output). |
| * @sfs_extended_status: 32-bit SFS extended status value (output). |
| */ |
| struct sfs_user_get_fw_versions { |
| __u8 blob[TEE_EXT_CMD_BUFFER_SIZE]; |
| __u32 sfs_status; |
| __u32 sfs_extended_status; |
| } __packed; |
| |
| /** |
| * struct sfs_user_update_package - update SFS package (input). |
| * @payload_name: name of SFS package to load, verify and execute (input). |
| * @sfs_status: 32-bit SFS status value (output). |
| * @sfs_extended_status: 32-bit SFS extended status value (output). |
| */ |
| struct sfs_user_update_package { |
| char payload_name[PAYLOAD_NAME_SIZE]; |
| __u32 sfs_status; |
| __u32 sfs_extended_status; |
| } __packed; |
| |
| /** |
| * Seamless Firmware Support (SFS) IOC |
| * |
| * possible return codes for all SFS IOCTLs: |
| * 0: success |
| * -EINVAL: invalid input |
| * -E2BIG: excess data passed |
| * -EFAULT: failed to copy to/from userspace |
| * -EBUSY: mailbox in recovery or in use |
| * -ENODEV: driver not bound with PSP device |
| * -EACCES: request isn't authorized |
| * -EINVAL: invalid parameter |
| * -ETIMEDOUT: request timed out |
| * -EAGAIN: invalid request for state machine |
| * -ENOENT: not implemented |
| * -ENFILE: overflow |
| * -EPERM: invalid signature |
| * -EIO: PSP I/O error |
| */ |
| #define SFS_IOC_TYPE 'S' |
| |
| /** |
| * SFSIOCFWVERS - returns blob containing FW versions |
| * ASP provides the current level of Base Firmware for the ASP |
| * and the other microprocessors as well as current patch |
| * level(s). |
| */ |
| #define SFSIOCFWVERS _IOWR(SFS_IOC_TYPE, 0x1, struct sfs_user_get_fw_versions) |
| |
| /** |
| * SFSIOCUPDATEPKG - updates package/payload |
| * ASP loads, verifies and executes the SFS package. |
| * By default, the SFS package/payload is loaded from |
| * /lib/firmware/amd, but alternative firmware loading |
| * path can be specified using kernel parameter |
| * firmware_class.path or the firmware loading path |
| * can be customized using sysfs file: |
| * /sys/module/firmware_class/parameters/path. |
| */ |
| #define SFSIOCUPDATEPKG _IOWR(SFS_IOC_TYPE, 0x2, struct sfs_user_update_package) |
| |
| #endif /* __PSP_SFS_USER_H__ */ |
