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33 lines
1.0 KiB
C
33 lines
1.0 KiB
C
/*
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* SPDX-FileCopyrightText: 2025 Espressif Systems (Shanghai) CO LTD
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <stdint.h>
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#include "esp32c5/rom/cache.h"
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/**
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* @brief Dummy implementation of Cache_Set_IDROM_MMU_Size from ROM.
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*
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* NOTE: This ROM-provided API is intended to configure the Cache MMU size for
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* instruction (irom) and rodata (drom) sections in flash.
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*
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* On ESP32-C5, it also sets the start pages for flash irom and drom sections,
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* which involves accessing MMU registers directly. However, these MMU registers
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* are protected by the APM and direct access from the REE results in a fault.
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*
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* To prevent this:
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* - Mark this symbol with the `PROVIDE` attribute in the ROM linker script.
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* - Define this dummy function as a stub implementation.
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* - Wrap this function to be routed as a TEE service call
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*
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* @param irom_size Size of the instruction ROM region.
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* @param drom_size Size of the data ROM region.
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*/
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void Cache_Set_IDROM_MMU_Size(uint32_t irom_size, uint32_t drom_size)
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{
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(void)irom_size;
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(void)drom_size;
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}
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