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https://github.com/ARM-software/arm-trusted-firmware.git
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ec8f4212ac
Introduce helper functions stm32mp_register_secure_gpio() and stm32mp_register_non_secure_gpio() for drivers to register a GPIO pin as secure or non-secure. These functions are stubbed when shared resource driver is not embedded in the BL image so that drivers do not bother whether they shall register or not their resources. Change-Id: I1fe98576c072ae31f75427c9ac5c9f6c4f1b6ed1 Signed-off-by: Etienne Carriere <etienne.carriere@st.com>
58 lines
1.8 KiB
C
58 lines
1.8 KiB
C
/*
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* Copyright (c) 2017-2020, 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 STM32MP_SHARED_RESOURCES_H
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#define STM32MP_SHARED_RESOURCES_H
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#include <stdbool.h>
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#include <stdint.h>
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#ifdef STM32MP_SHARED_RESOURCES
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enum stm32mp_shres;
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/* Return true if @clock_id is shared by secure and non-secure worlds */
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bool stm32mp_nsec_can_access_clock(unsigned long clock_id);
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/* Return true if and only if @reset_id relates to a non-secure peripheral */
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bool stm32mp_nsec_can_access_reset(unsigned int reset_id);
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/* Register a shared resource assigned to the secure world */
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void stm32mp_register_secure_periph(enum stm32mp_shres id);
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/* Register a shared resource assigned to the non-secure world */
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void stm32mp_register_non_secure_periph(enum stm32mp_shres id);
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/* Register a peripheral as secure or non-secure based on IO base address */
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void stm32mp_register_secure_periph_iomem(uintptr_t base);
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void stm32mp_register_non_secure_periph_iomem(uintptr_t base);
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/* Register a GPIO as secure or non-secure based on its bank and pin numbers */
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void stm32mp_register_secure_gpio(unsigned int bank, unsigned int pin);
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void stm32mp_register_non_secure_gpio(unsigned int bank, unsigned int pin);
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/* Consolidate peripheral states and lock against new peripheral registering */
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void stm32mp_lock_periph_registering(void);
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#else
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static inline void stm32mp_register_secure_periph_iomem(uintptr_t base __unused)
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{
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}
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static inline
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void stm32mp_register_non_secure_periph_iomem(uintptr_t base __unused)
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{
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}
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static inline void stm32mp_register_secure_gpio(unsigned int bank __unused,
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unsigned int pin __unused)
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{
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}
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static inline void stm32mp_register_non_secure_gpio(unsigned int bank __unused,
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unsigned int pin __unused)
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{
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}
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#endif /* STM32MP_SHARED_RESOURCES */
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#endif /* STM32MP_SHARED_RESOURCES_H */
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