projects / thirdparty / u-boot.git / blame
| Commit | Line | Data |
|---|---|---|
| c52cd074 AR |
1 | /* SPDX-License-Identifier: GPL-2.0+ */ |
| 2 | /* | |
| 3 | * Copyright (c) 2023 SberDevices, Inc. | |
| 4 | * | |
| 5 | * Author: Alexey Romanov <avromanov@salutedevices.com> | |
| 6 | */ | |
| 7 | ||
| 8 | #ifndef __SM_UCLASS_H__ | |
| 9 | #define __SM_UCLASS_H__ | |
| 10 | ||
| 11 | #include <asm/types.h> | |
| 12 | #include <asm/ptrace.h> | |
| 13 | ||
| 14 | struct udevice; | |
| 15 | ||
| 16 | /** | |
| 17 | * struct sm_ops - The functions that a SM driver must implement. | |
| 18 | * | |
| 19 | * @sm_call: Request a secure monitor call with specified command. | |
| 20 | * | |
| 21 | * @sm_call_read: Request a secure monitor call and retrieve data | |
| 22 | * from secure-monitor (depends on specified command). | |
| 23 | * | |
| 24 | * @sm_call_write: Request a secure monitor call and send data | |
| 25 | * to secure-monitor (depends on specified command). | |
| 26 | * | |
| 27 | * The individual methods are described more fully below. | |
| 28 | */ | |
| 29 | struct sm_ops { | |
| 30 | /** | |
| 31 | * sm_call - generic SMC call to the secure-monitor | |
| 32 | * | |
| 33 | * @dev: Pointer to UCLASS_SM device | |
| 34 | * @cmd_index: Index of the SMC function ID | |
| 35 | * @smc_ret: Returned value from secure world | |
| 36 | * @args: SMC arguments | |
| 37 | * | |
| 38 | * @return: 0 on success, a negative value on error | |
| 39 | */ | |
| 40 | int (*sm_call)(struct udevice *dev, u32 cmd, s32 *smc_ret, | |
| 41 | struct pt_regs *args); | |
| 42 | ||
| 43 | /** | |
| 44 | * sm_call_write - send data to secure-monitor | |
| 45 | * | |
| 46 | * @dev: Pointer to UCLASS_SM device | |
| 47 | * @buffer: Buffer containing data to send | |
| 48 | * @size: Size of the buffer | |
| 49 | * @cmd: Index of the SMC function ID | |
| 50 | * @args: SMC arguments | |
| 51 | * | |
| 52 | * @return: size of sent data on success, a negative value on error | |
| 53 | */ | |
| 54 | int (*sm_call_write)(struct udevice *dev, void *buffer, | |
| 55 | size_t size, u32 cmd, struct pt_regs *args); | |
| 56 | ||
| 57 | /** | |
| 58 | * sm_call_read - retrieve data from secure-monitor | |
| 59 | * | |
| 60 | * @dev: Pointer to UCLASS_SM device | |
| 61 | * @buffer: Buffer to store the retrieved data | |
| 62 | * @size: Size of the buffer | |
| 63 | * @cmd: Index of the SMC function ID | |
| 64 | * @args: SMC arguments | |
| 65 | * | |
| 66 | * @return: size of read data on success, a negative value on error | |
| 67 | */ | |
| 68 | int (*sm_call_read)(struct udevice *dev, void *buffer, | |
| 69 | size_t size, u32 cmd, struct pt_regs *args); | |
| 70 | }; | |
| 71 | ||
| 72 | #endif /* __SM_UCLASS_H__ */ |