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soc: change region in mpu test

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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).
This commit is contained in:
Renz Bagaporo 2020-04-21 18:12:44 +08:00
parent 741960d5ce
commit 4571fb219f
1 changed files with 9 additions and 2 deletions
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11
components/soc/test/test_mpu.c
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@ -11,17 +11,24 @@ volatile static int RTC_NOINIT_ATTR access = 0;
static void trigger_illegal_access(void)
{
access = 0;
intptr_t addr = 0x60000000;
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);
mpu_hal_set_region_access(3, MPU_REGION_ILLEGAL); // 0x60000000
// 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;
}