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https://github.com/ARM-software/arm-trusted-firmware.git
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b22e6898e1
The ChromeOS will use the SMC to pass some secrets from firmware to optee. Change-Id: Iaf3357d40a7ed22415926acd9d7979df24dd81f1 Signed-off-by: Yi Chou <yich@google.com>
65 lines
2.2 KiB
C
65 lines
2.2 KiB
C
/*
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* Copyright (c) 2024, The ChromiumOS Authors. All rights reserved.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#ifndef CROS_WIDEVINE_SMC_HANDLERS_H
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#define CROS_WIDEVINE_SMC_HANDLERS_H
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#include <lib/smccc.h>
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/*******************************************************************************
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* Defines for CrOS OEM Service queries
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******************************************************************************/
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/* 0xC300C050 - 0xC300C05F are CrOS OEM service calls */
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#define CROS_OEM_SMC_ID 0xC050
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#define CROS_OEM_SMC_CALL_ID(func_num) \
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((SMC_TYPE_FAST << FUNCID_TYPE_SHIFT) | \
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((SMC_64) << FUNCID_CC_SHIFT) | (OEN_OEM_START << FUNCID_OEN_SHIFT) | \
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(CROS_OEM_SMC_ID) | ((func_num) & FUNCID_NUM_MASK))
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enum cros_drm_set {
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CROS_DRM_SET_TPM_AUTH_PUB = 0U,
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CROS_DRM_SET_HARDWARE_UNIQUE_KEY = 1U,
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CROS_DRM_SET_ROOT_OF_TRUST = 2U,
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};
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/*******************************************************************************
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* Defines for runtime services func ids
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******************************************************************************/
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/* Sets the TPM auth public key. The maximum size is 128 bytes.
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* |x1| is the length of the data, |x2| is the physical address of the data.
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*/
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#define CROS_OEM_SMC_DRM_SET_TPM_AUTH_PUB_FUNC_ID \
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CROS_OEM_SMC_CALL_ID(CROS_DRM_SET_TPM_AUTH_PUB)
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/* Sets the hardware unique key. The maximum size is 32 bytes.
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* |x1| is the length of the data, |x2| is the physical address of the data.
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*/
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#define CROS_OEM_SMC_DRM_SET_HARDWARE_UNIQUE_KEY_FUNC_ID \
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CROS_OEM_SMC_CALL_ID(CROS_DRM_SET_HARDWARE_UNIQUE_KEY)
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/* Sets the widevine root of trust. The maximum size is 32 bytes.
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* |x1| is the length of the data, |x2| is the physical address of the data.
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*/
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#define CROS_OEM_SMC_DRM_SET_ROOT_OF_TRUST_FUNC_ID \
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CROS_OEM_SMC_CALL_ID(CROS_DRM_SET_ROOT_OF_TRUST)
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#define is_cros_oem_smc(_call_id) (((_call_id) & 0xFFF0U) == CROS_OEM_SMC_ID)
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struct cros_oem_data {
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uint8_t *buffer;
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const uint32_t max_length;
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uint32_t length;
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};
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extern struct cros_oem_data cros_oem_tpm_auth_pk;
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extern struct cros_oem_data cros_oem_huk;
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extern struct cros_oem_data cros_oem_rot;
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#endif /* CROS_WIDEVINE_SMC_HANDLERS_H */
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