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5f038ac683
BL32/SP_MIN configures platform security hardening from the shared resources driver. At the end of SP_MIN initialization, all shared resources shall be assigned to secure or non-secure world by drivers. A lock prevent from further change on the resource assignation. By definition, resources not registered are assign to non-secure world since not claimed by any component on the BL. No functional change as all resources are currently in state SHRES_UNREGISTERED hence assigned to non-secure world as prior this change in stm32mp1_etzpc_early_setup() and sp_min_platform_setup(). Change-Id: Ic41fab47216c3b8b7a6a75b8358cfcec411ed941 Signed-off-by: Etienne Carriere <etienne.carriere@st.com>
21 lines
651 B
C
21 lines
651 B
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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/* 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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/* Consolidate peripheral states and lock against new peripheral registering */
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void stm32mp_lock_periph_registering(void);
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#endif /* STM32MP_SHARED_RESOURCES_H */
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