diff options
Diffstat (limited to 'test/mpu.c')
| -rw-r--r-- | test/mpu.c | 222 |
1 files changed, 0 insertions, 222 deletions
diff --git a/test/mpu.c b/test/mpu.c deleted file mode 100644 index 25b2c58903..0000000000 --- a/test/mpu.c +++ /dev/null @@ -1,222 +0,0 @@ -/* Copyright 2020 The Chromium OS Authors. All rights reserved. - * Use of this source code is governed by a BSD-style license that can be - * found in the LICENSE file. - */ - -#include <stdbool.h> -#include "mpu.h" -#include "mpu_private.h" -#include "string.h" -#include "system.h" -#include "test_util.h" - -struct mpu_info { - bool has_mpu; - int num_mpu_regions; - bool mpu_is_unified; -}; - -#if defined(CHIP_VARIANT_STM32F412) -struct mpu_info mpu_info = { - .has_mpu = true, - .num_mpu_regions = 8, - .mpu_is_unified = true -}; - -struct mpu_rw_regions expected_rw_regions = { .num_regions = 2, - .addr = { 0x08060000, - 0x08080000 }, - .size = { 0x20000, 0x80000 } }; -#elif defined(CHIP_VARIANT_STM32H7X3) -struct mpu_info mpu_info = { - .has_mpu = true, - .num_mpu_regions = 16, - .mpu_is_unified = true -}; - -struct mpu_rw_regions expected_rw_regions = { .num_regions = 1, - .addr = { 0x08100000, - 0x08200000 }, - .size = { 0x100000, 0 } }; -#else -#error "MPU info not defined for this chip. Please add it." -#endif - -test_static int test_mpu_info(void) -{ - TEST_EQ(mpu_num_regions(), mpu_info.num_mpu_regions, "%d"); - TEST_EQ(has_mpu(), mpu_info.has_mpu, "%d"); - TEST_EQ(mpu_is_unified(), mpu_info.mpu_is_unified, "%d"); - return EC_SUCCESS; -} - -test_static int reset_mpu(void) -{ - int i; - - mpu_disable(); - - for (i = 0; i < mpu_info.num_mpu_regions; ++i) { - /* - * Disable all regions. - * - * We use the smallest possible size (32 bytes), but it - * doesn't really matter since the regions are disabled. - */ - TEST_EQ(mpu_config_region(i, 0, 32, 0, 0), EC_SUCCESS, "%d"); - } - - mpu_enable(); - - return EC_SUCCESS; -} - -test_static int test_mpu_update_region_valid_region(void) -{ - volatile char data __maybe_unused; - - char * const ram_base = (char * const)CONFIG_RAM_BASE; - const uint8_t size_bit = 5; - uint16_t mpu_attr = MPU_ATTR_NO_NO; - - /* - * Initial read should work. MPU is not protecting the given address. - */ - data = ram_base[0]; - - TEST_EQ(mpu_update_region(0, (uint32_t)ram_base, size_bit, mpu_attr, 1, - 0), - EC_SUCCESS, "%d"); - - /* This panics with a data violation at CONFIG_RAM_BASE: - * - * Data access violation, mfar = <CONFIG_RAM_BASE> - */ - data = ram_base[0]; - - return EC_SUCCESS; -} - -test_static int test_mpu_update_region_invalid_region(void) -{ - /* Test invalid region */ - TEST_EQ(mpu_update_region(mpu_info.num_mpu_regions, 0x8020000, 17, - 0x1000, 1, 0), - -EC_ERROR_INVAL, "%d"); - return EC_SUCCESS; -} - -test_static int test_mpu_update_region_invalid_alignment(void) -{ - /* - * Test size that is not aligned to address. - */ - const uint32_t addr = 0x20000; - const uint32_t size = 0x40000; - const uint32_t size_bit = 18; - - TEST_EQ(size, BIT(size_bit), "%d"); - TEST_EQ(reset_mpu(), EC_SUCCESS, "%d"); - TEST_EQ(mpu_update_region(0, addr, size_bit, 0, 1, 0), -EC_ERROR_INVAL, - "%d"); - - return EC_SUCCESS; -} - -test_static int test_mpu_lock_ro_flash(void) -{ - int rv; - - rv = mpu_lock_ro_flash(); - TEST_EQ(rv, EC_SUCCESS, "%d"); - - return EC_SUCCESS; -} - -test_static int test_mpu_lock_rw_flash(void) -{ - int rv; - - rv = mpu_lock_rw_flash(); - TEST_EQ(rv, EC_SUCCESS, "%d"); - - return EC_SUCCESS; -} - -test_static int test_mpu_protect_data_ram(void) -{ - int rv; - - rv = mpu_protect_data_ram(); - TEST_EQ(rv, EC_SUCCESS, "%d"); - - return EC_SUCCESS; -} - -test_static int test_mpu_protect_code_ram(void) -{ - if (IS_ENABLED(CONFIG_EXTERNAL_STORAGE) || - !IS_ENABLED(CONFIG_FLASH_PHYSICAL)) { - int rv; - - rv = mpu_protect_code_ram(); - TEST_EQ(rv, EC_SUCCESS, "%d"); - } - - return EC_SUCCESS; -} - -test_static int test_mpu_get_rw_regions(void) -{ - struct mpu_rw_regions rw_regions = mpu_get_rw_regions(); - int rv = memcmp(&rw_regions, &expected_rw_regions, - sizeof(expected_rw_regions)); - - TEST_EQ(rv, 0, "%d"); - return EC_SUCCESS; -} - -void run_test(int argc, char **argv) -{ - enum ec_image cur_image = system_get_image_copy(); - - ccprintf("Running MPU test\n"); - - RUN_TEST(reset_mpu); - RUN_TEST(test_mpu_info); - - /* - * TODO(b/151105339): For all locked regions, check that we cannot - * read/write/execute (depending on the configuration). - */ - - /* - * Since locking prevents code execution, we can only lock the region - * that is not running or the test will hang. - */ - if (cur_image == EC_IMAGE_RW) { - RUN_TEST(reset_mpu); - RUN_TEST(test_mpu_lock_ro_flash); - } - - if (cur_image == EC_IMAGE_RO) { - RUN_TEST(reset_mpu); - RUN_TEST(test_mpu_lock_rw_flash); - } - - RUN_TEST(reset_mpu); - RUN_TEST(test_mpu_update_region_invalid_region); - RUN_TEST(reset_mpu); - RUN_TEST(test_mpu_update_region_invalid_alignment); - RUN_TEST(reset_mpu); - RUN_TEST(test_mpu_protect_code_ram); - RUN_TEST(reset_mpu); - RUN_TEST(test_mpu_protect_data_ram); - RUN_TEST(reset_mpu); - RUN_TEST(test_mpu_get_rw_regions); - RUN_TEST(reset_mpu); - /* This test must be last because it generates a panic */ - RUN_TEST(test_mpu_update_region_valid_region); - RUN_TEST(reset_mpu); - test_print_result(); -} |