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Check cache before enabling it 

The mbed_sdk_init can be called either during cold boot or during
application boot after bootloader has been executed.
In case the bootloader has already enabled the cache,
is is needed to not enable it again.
pull/5972/head
bcostm 2018-01-09 17:06:48 +01:00
parent 5ad0887d7e
commit 8ed0f26d80
1 changed files with 10 additions and 3 deletions
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13
targets/TARGET_STM/mbed_overrides.c
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@ -35,9 +35,16 @@ void mbed_sdk_init()
HAL_Init();
#if TARGET_STM32F7
// Enable CPU L1-Cache
SCB_EnableICache();
SCB_EnableDCache();
// The mbed_sdk_init can be called either during cold boot or during
// application boot after bootloader has been executed.
// In case the bootloader has already enabled the cache,
// is is needed to not enable it again.
if (SCB->CCR & (uint32_t)SCB_CCR_IC_Msk == 0) { // If ICache is disabled
SCB_EnableICache();
}
if (SCB->CCR & (uint32_t)SCB_CCR_DC_Msk == 0) { // If DCache is disabled
SCB_EnableDCache();
}
#endif /* TARGET_STM32F7 */
/* Configure the System clock source, PLL Multiplier and Divider factors,