OVMS3-idf/components/soc/test/test_mpu.c
Renz Bagaporo 4571fb219f soc: change region in mpu test
Previously, the test uses region 3 for the illegal access test
(0x60000000 - 0x7fffffff). This caused issues with there being
peripherals located in that memory range. Change to use region 4
(0x8000000 - 0x9fffffff) instead).
2020-04-24 16:34:15 +08:00

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1.1 KiB
C

#include <stdio.h>
#include <stdbool.h>
#include "unity.h"
#include "esp_attr.h"
#include "hal/mpu_hal.h"
volatile static int RTC_NOINIT_ATTR access = 0;
static void trigger_illegal_access(void)
{
access = 0;
intptr_t addr = 0x80000000; // MPU region 4
volatile int __attribute__((unused)) val = 0;
// Marked as an illegal access region at startup in ESP32, ESP32S2.
// Make accessible temporarily.
mpu_hal_set_region_access(4, MPU_REGION_RW);
val = *((int*) addr);
++access;
TEST_ASSERT_EQUAL(1, access);
printf("Sucessfully accessed location %p\r\n", (void*)addr);
// Make access to region illegal again.
mpu_hal_set_region_access(4, MPU_REGION_ILLEGAL);
++access;
// Since access to region is illegal, this should fail (causing a reset), and the increment
// to access count is not performed.
val = *((int*) addr);
++access;
}
void check_access(void)
{
TEST_ASSERT_EQUAL(2, access);
}
TEST_CASE_MULTIPLE_STAGES("Can set illegal access regions", "[soc][mpu]",
trigger_illegal_access,
check_access);