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fix(cache): disable branch predictor before disable cache

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branch predictor will start cache request
This commit is contained in:
Armando
2024-08-13 18:23:32 +08:00
parent 95594df093
commit 13c30981b9
1 changed files with 7 additions and 0 deletions
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7
components/spi_flash/cache_utils.c
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@ -371,12 +371,19 @@ void IRAM_ATTR spi_flash_enable_cache(uint32_t cpuid)
void IRAM_ATTR spi_flash_disable_cache(uint32_t cpuid, uint32_t *saved_state)
{
#if SOC_BRANCH_PREDICTOR_SUPPORTED
//branch predictor will start cache request as well
esp_cpu_branch_prediction_disable();
#endif
cache_hal_suspend(CACHE_LL_LEVEL_EXT_MEM, CACHE_TYPE_ALL);
}
void IRAM_ATTR spi_flash_restore_cache(uint32_t cpuid, uint32_t saved_state)
{
cache_hal_resume(CACHE_LL_LEVEL_EXT_MEM, CACHE_TYPE_ALL);
#if SOC_BRANCH_PREDICTOR_SUPPORTED
esp_cpu_branch_prediction_enable();
#endif
}
bool IRAM_ATTR spi_flash_cache_enabled(void)