Enabled I and D caches + sdioio works -- most times

Author: snkYmkrct

ports/stm/boards/daisy_seed_with_sdram/mpconfigboard.mk

@@ -13,4 +13,4 @@ MCU_PACKAGE = UFBGA176
 LD_COMMON = boards/common_tcm.ld
 LD_FILE = boards/STM32H750.ld
 
-CIRCUITPY_SDIOIO = 0
+CIRCUITPY_SDIOIO = 1

ports/stm/common-hal/sdioio/SDCard.c

@@ -242,7 +242,13 @@ int common_hal_sdioio_sdcard_writeblocks(sdioio_sdcard_obj_t *self, uint32_t sta
     wait_write_complete(self);
     self->state_programming = true;
     common_hal_mcu_disable_interrupts();
-    HAL_StatusTypeDef r = HAL_SD_WriteBlocks(&self->handle, bufinfo->buf, start_block, bufinfo->len / 512, 1000);
+    #ifdef STM32H750xx
+    // longer timeouts needed because code executing from QSPI is slower
+    uint32_t time_out = SDMMC_DATATIMEOUT;
+    #else
+    uint32_t time_out = 1000;
+    #endif
+    HAL_StatusTypeDef r = HAL_SD_WriteBlocks(&self->handle, bufinfo->buf, start_block, bufinfo->len / 512, time_out);
     common_hal_mcu_enable_interrupts();
     if (r != HAL_OK) {
         return -EIO;
@@ -255,7 +261,13 @@ int common_hal_sdioio_sdcard_readblocks(sdioio_sdcard_obj_t *self, uint32_t star
     check_whole_block(bufinfo);
     wait_write_complete(self);
     common_hal_mcu_disable_interrupts();
-    HAL_StatusTypeDef r = HAL_SD_ReadBlocks(&self->handle, bufinfo->buf, start_block, bufinfo->len / 512, 1000);
+    #ifdef STM32H750xx
+    // longer timeouts needed because code executing from QSPI is slower
+    uint32_t time_out = SDMMC_DATATIMEOUT;
+    #else
+    uint32_t time_out = 1000;
+    #endif
+    HAL_StatusTypeDef r = HAL_SD_ReadBlocks(&self->handle, bufinfo->buf, start_block, bufinfo->len / 512, time_out);
     common_hal_mcu_enable_interrupts();
     if (r != HAL_OK) {
         return -EIO;

ports/stm/supervisor/port.c

@@ -146,6 +146,16 @@ __attribute__((used, naked)) void Reset_Handler(void) {
        start execution of the firmware from the external flash.
        It also makes the SystemInit() call not necessary for this chip.
     */
+    #if defined(__ICACHE_PRESENT) && (__ICACHE_PRESENT == 1U)
+    /* Enable I cache. */
+    SCB_EnableICache();
+    #endif /* __ICACHE_PRESENT */
+
+    #if defined(__DCACHE_PRESENT) && (__DCACHE_PRESENT == 1U)
+    /* Enable D cache. */
+    SCB_EnableDCache();
+    #endif /* __DCACHE_PRESENT */
+
     #else
     SystemInit();
     #endif