soc: st: stm32: stm32h7rs: enable mpu regions for SRAM1&2 access

Introduces two MPU regions for SRAM1 and SRAM2 with both 16KB size.

Both regions use REGION_RAM_ATTR to provide read/write access and
appropriate cacheability for SRAM-like memory.

The regions were previously missing from the MPU configuration,
causing the system to halt due to unauthorized access.

These additions resolve a Data Access Violation encountered during
test, where the faulting address was 0x30000000.


Signed-off-by: Fabrice DJIATSA <[email protected]>

Author: djiatsaf-st

soc/st/stm32/stm32h7rsx/mpu_regions.c

@@ -29,6 +29,12 @@ static const struct arm_mpu_region mpu_regions[] = {
 
 	/* Region 3 */
 	MPU_REGION_ENTRY("SRAM_0", CONFIG_SRAM_BASE_ADDRESS, REGION_RAM_ATTR(REGION_SRAM_SIZE)),
+
+	/* Region 4 */
+	MPU_REGION_ENTRY("SRAM_1", 0x30000000, REGION_RAM_ATTR(REGION_16K)),
+
+	/* Region 5 */
+	MPU_REGION_ENTRY("SRAM_2", 0x30004000, REGION_RAM_ATTR(REGION_16K)),
 };
 
 const struct arm_mpu_config mpu_config = {