alex/esp-idf
alex/esp-idf
1
0
Fork 0
mirror of https://github.com/espressif/esp-idf.git synced 2024-10-05 20:47:46 -04:00
Code Issues Actions 2 Packages Projects Releases Wiki Activity

fix(cache): disable branch predictor before disable cache

Browse Source 
branch predictor will start cache request
This commit is contained in:
Armando 2024-08-13 18:23:32 +08:00
parent 893c04702f
commit 873068d3fe
1 changed files with 7 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
components/spi_flash/cache_utils.c
View File

@ -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)