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47 lines
1.2 KiB
C
47 lines
1.2 KiB
C
/*
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* SPDX-FileCopyrightText: 2023 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 "hal/cache_ll.h"
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#include "hal/cache_hal.h"
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static uint32_t s_cache_status[2];
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/**
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* On ESP32, The cache_hal_suspend()/cache_hal_resume() are replacements
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* for Cache_Read_Disable()/Cache_Read_Enable() in ROM.
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* There's a bug that Cache_Read_Disable requires a call to Cache_Flush
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* before Cache_Read_Enable, even if cached data was not modified.
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*/
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void cache_hal_suspend(cache_type_t type)
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{
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s_cache_status[0] = cache_ll_l1_get_enabled_bus(0);
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cache_ll_l1_disable_cache(0);
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#if !CONFIG_FREERTOS_UNICORE
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s_cache_status[1] = cache_ll_l1_get_enabled_bus(1);
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cache_ll_l1_disable_cache(1);
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#endif
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}
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void cache_hal_resume(cache_type_t type)
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{
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cache_ll_l1_enable_cache(0);
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cache_ll_l1_enable_bus(0, s_cache_status[0]);
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#if !CONFIG_FREERTOS_UNICORE
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cache_ll_l1_enable_cache(1);
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cache_ll_l1_enable_bus(1, s_cache_status[1]);
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#endif
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}
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bool cache_hal_is_cache_enabled(cache_type_t type)
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{
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bool result = cache_ll_l1_is_cache_enabled(0, CACHE_TYPE_ALL);
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#if !CONFIG_FREERTOS_UNICORE
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result = result && cache_ll_l1_is_cache_enabled(1, CACHE_TYPE_ALL);
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#endif
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return result;
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}
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