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7f41506fa7
Other component such as OP-TEE may have the responsibility for STGEN configuration but updating Arm CNTFRQ can only be done from EL3. Therefore, implement a SiP SMC handler for this purpose and a runtime service to catch SIP SMCs. Signed-off-by: Gatien Chevallier <gatien.chevallier@foss.st.com> Signed-off-by: Maxime Méré <maxime.mere@foss.st.com> Change-Id: I7854e1ae6328f149798b43d52bb1ecdf71a5aa69
22 lines
522 B
C
22 lines
522 B
C
/*
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* Copyright (c) 2024, STMicroelectronics - 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 STM32MP2_SMC_H
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#define STM32MP2_SMC_H
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#define STM32_COMMON_SIP_NUM_CALLS 1U
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/*
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* STM32_SIP_SMC_STGEN_SET_RATE call API
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* This service is opened to secure world only.
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*
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* Argument a0: (input) SMCC ID
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* (output) status return code
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* Argument a1: (input) Frequency to set (given by sender)
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*/
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#define STM32_SIP_SMC_STGEN_SET_RATE 0x82000000
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#endif /* STM32MP2_SMC_H */
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