projects / thirdparty / u-boot.git / blame
| Commit | Line | Data |
|---|---|---|
| 9ec6db32 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 | ||
| d678a59d | 8 | #include <common.h> |
| 9ec6db32 AR |
9 | #include <sm.h> |
| 10 | #include <sm-uclass.h> | |
| 11 | #include <sandbox-sm.h> | |
| 12 | #include <asm/ptrace.h> | |
| 13 | #include <dm/device.h> | |
| 14 | #include <linux/sizes.h> | |
| 15 | ||
| 16 | static u8 test_buffer[SZ_4K]; | |
| 17 | ||
| 18 | static int sandbox_sm_call(struct udevice *dev, u32 cmd_index, s32 *smc_ret, | |
| 19 | struct pt_regs *args) | |
| 20 | { | |
| 21 | if (cmd_index >= SANDBOX_SMC_CMD_COUNT) | |
| 22 | return -EINVAL; | |
| 23 | ||
| 24 | if (smc_ret) | |
| 25 | *smc_ret = 0; | |
| 26 | ||
| 27 | return 0; | |
| 28 | } | |
| 29 | ||
| 30 | static int sandbox_sm_call_read(struct udevice *dev, void *buffer, size_t size, | |
| 31 | u32 cmd_index, struct pt_regs *args) | |
| 32 | { | |
| 33 | if (cmd_index >= SANDBOX_SMC_CMD_COUNT || !buffer) | |
| 34 | return -EINVAL; | |
| 35 | ||
| 36 | if (size > sizeof(test_buffer)) | |
| 37 | return -EINVAL; | |
| 38 | ||
| 39 | memcpy(buffer, test_buffer, size); | |
| 40 | ||
| 41 | return size; | |
| 42 | } | |
| 43 | ||
| 44 | static int sandbox_sm_call_write(struct udevice *dev, void *buffer, size_t size, | |
| 45 | u32 cmd_index, struct pt_regs *args) | |
| 46 | { | |
| 47 | if (cmd_index >= SANDBOX_SMC_CMD_COUNT || !buffer) | |
| 48 | return -EINVAL; | |
| 49 | ||
| 50 | if (size > sizeof(test_buffer)) | |
| 51 | return -EINVAL; | |
| 52 | ||
| 53 | memcpy(test_buffer, buffer, size); | |
| 54 | ||
| 55 | return size; | |
| 56 | } | |
| 57 | ||
| 58 | static const struct udevice_id sandbox_sm_ids[] = { | |
| 59 | { | |
| 60 | .compatible = "sandbox,sm", | |
| 61 | }, | |
| 62 | {}, | |
| 63 | }; | |
| 64 | ||
| 65 | static const struct sm_ops sandbox_sm_ops = { | |
| 66 | .sm_call = sandbox_sm_call, | |
| 67 | .sm_call_read = sandbox_sm_call_read, | |
| 68 | .sm_call_write = sandbox_sm_call_write, | |
| 69 | }; | |
| 70 | ||
| 71 | U_BOOT_DRIVER(sm) = { | |
| 72 | .name = "sm", | |
| 73 | .id = UCLASS_SM, | |
| 74 | .of_match = sandbox_sm_ids, | |
| 75 | .ops = &sandbox_sm_ops, | |
| 76 | }; |