| Yi Chou | 097051f | 2023-04-11 15:57:08 +0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2024, The ChromiumOS Authors. All rights reserved. |
| 3 | * |
| 4 | * SPDX-License-Identifier: BSD-3-Clause |
| 5 | */ |
| 6 | |
| 7 | #ifndef CROS_WIDEVINE_SMC_HANDLERS_H |
| 8 | #define CROS_WIDEVINE_SMC_HANDLERS_H |
| 9 | |
| 10 | #include <lib/smccc.h> |
| 11 | |
| 12 | /******************************************************************************* |
| 13 | * Defines for CrOS OEM Service queries |
| 14 | ******************************************************************************/ |
| 15 | |
| 16 | /* 0xC300C050 - 0xC300C05F are CrOS OEM service calls */ |
| 17 | #define CROS_OEM_SMC_ID 0xC050 |
| 18 | #define CROS_OEM_SMC_CALL_ID(func_num) \ |
| 19 | ((SMC_TYPE_FAST << FUNCID_TYPE_SHIFT) | \ |
| 20 | ((SMC_64) << FUNCID_CC_SHIFT) | (OEN_OEM_START << FUNCID_OEN_SHIFT) | \ |
| 21 | (CROS_OEM_SMC_ID) | ((func_num) & FUNCID_NUM_MASK)) |
| 22 | |
| 23 | enum cros_drm_set { |
| 24 | CROS_DRM_SET_TPM_AUTH_PUB = 0U, |
| 25 | CROS_DRM_SET_HARDWARE_UNIQUE_KEY = 1U, |
| 26 | CROS_DRM_SET_ROOT_OF_TRUST = 2U, |
| 27 | }; |
| 28 | |
| 29 | /******************************************************************************* |
| 30 | * Defines for runtime services func ids |
| 31 | ******************************************************************************/ |
| 32 | |
| 33 | /* Sets the TPM auth public key. The maximum size is 128 bytes. |
| 34 | * |x1| is the length of the data, |x2| is the physical address of the data. |
| 35 | */ |
| 36 | #define CROS_OEM_SMC_DRM_SET_TPM_AUTH_PUB_FUNC_ID \ |
| 37 | CROS_OEM_SMC_CALL_ID(CROS_DRM_SET_TPM_AUTH_PUB) |
| 38 | |
| 39 | /* Sets the hardware unique key. The maximum size is 32 bytes. |
| 40 | * |x1| is the length of the data, |x2| is the physical address of the data. |
| 41 | */ |
| 42 | #define CROS_OEM_SMC_DRM_SET_HARDWARE_UNIQUE_KEY_FUNC_ID \ |
| 43 | CROS_OEM_SMC_CALL_ID(CROS_DRM_SET_HARDWARE_UNIQUE_KEY) |
| 44 | |
| 45 | /* Sets the widevine root of trust. The maximum size is 32 bytes. |
| 46 | * |x1| is the length of the data, |x2| is the physical address of the data. |
| 47 | */ |
| 48 | #define CROS_OEM_SMC_DRM_SET_ROOT_OF_TRUST_FUNC_ID \ |
| 49 | CROS_OEM_SMC_CALL_ID(CROS_DRM_SET_ROOT_OF_TRUST) |
| 50 | |
| 51 | #define is_cros_oem_smc(_call_id) (((_call_id) & 0xFFF0U) == CROS_OEM_SMC_ID) |
| 52 | |
| 53 | struct cros_oem_data { |
| 54 | uint8_t *buffer; |
| 55 | const uint32_t max_length; |
| 56 | uint32_t length; |
| 57 | }; |
| 58 | |
| 59 | extern struct cros_oem_data cros_oem_tpm_auth_pk; |
| 60 | |
| 61 | extern struct cros_oem_data cros_oem_huk; |
| 62 | |
| 63 | extern struct cros_oem_data cros_oem_rot; |
| 64 | |
| 65 | #endif /* CROS_WIDEVINE_SMC_HANDLERS_H */ |