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HAL_ChibiOS: enable ITCM and DTCM on H7 at startup 

these may have been disabled by the px4 H7 bootloader
This commit is contained in:
Andrew Tridgell 2022-05-13 13:53:03 +10:00
parent 462cb806ec
commit 669c16a114
1 changed files with 6 additions and 0 deletions
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6
libraries/AP_HAL_ChibiOS/hwdef/common/board.c
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@ -238,6 +238,12 @@ void __early_init(void) {
SCB_DisableDCache(); SCB_DisableDCache();
#endif #endif
#if defined(STM32H7) #if defined(STM32H7)
// ensure ITCM and DTCM are enabled. These could be disabled by the px4
// bootloader
SCB->ITCMCR |= 1; // ITCM enable
SCB->DTCMCR |= 1; // DTCM enable
// disable cache on SRAM4 so we can use it for DMA // disable cache on SRAM4 so we can use it for DMA
mpuConfigureRegion(MPU_REGION_5, mpuConfigureRegion(MPU_REGION_5,
0x38000000U, 0x38000000U,