324 lines
11 KiB
C
324 lines
11 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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#include <stdlib.h>
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#include <string.h>
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#include <tests/test.h>
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#include <fmap.h>
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#include <commonlib/region.h>
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#include <tests/lib/fmap/fmap_data.h>
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#include <tests/lib/fmap/fmap_config.h>
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static struct mem_region_device mem_rdev_rw;
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static struct mem_region_device mem_rdev_ro;
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static char *flash_buffer = NULL;
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static size_t flash_buffer_size = 0;
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static void prepare_flash_buffer(void)
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{
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/* Prepare flash buffer with dummy data and FMAP */
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flash_buffer = malloc(FMAP_SECTION_FLASH_SIZE);
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flash_buffer_size = FMAP_SECTION_FLASH_SIZE;
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/* Fill first part of buffer with dummy data */
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for (int i = 0; i < FMAP_SECTION_FMAP_START; ++i)
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flash_buffer[i] = 'a' + i % ('z' - 'a');
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/* Copy FMAP section into buffer */
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memcpy(flash_buffer + FMAP_SECTION_FMAP_START, tests_fmap_bin, FMAP_SIZE);
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/* Fill rest of buffer with dummy data */
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for (int i = FMAP_SECTION_FMAP_START + FMAP_SECTION_FMAP_SIZE;
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i < FMAP_SECTION_FLASH_SIZE; ++i)
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flash_buffer[i] = 'a' + i % ('z' - 'a');
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}
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static int setup_fmap(void **state)
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{
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prepare_flash_buffer();
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mem_rdev_rw = (struct mem_region_device)
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MEM_REGION_DEV_RW_INIT(flash_buffer, FMAP_SECTION_FLASH_SIZE);
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mem_rdev_ro = (struct mem_region_device)
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MEM_REGION_DEV_RO_INIT(flash_buffer, FMAP_SECTION_FLASH_SIZE);
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return 0;
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}
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static int teardown_fmap(void **state)
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{
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struct mem_region_device empty = {
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.base = NULL,
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.rdev = {
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.root = NULL,
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.ops = NULL,
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.region = {
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.offset = 0,
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.size = 0
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}
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}
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};
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mem_rdev_rw = empty;
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mem_rdev_ro = empty;
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free(flash_buffer);
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flash_buffer = NULL;
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flash_buffer_size = 0;
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return 0;
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}
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void boot_device_init(void)
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{
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/* Setup in unit test setup function */
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}
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const struct region_device *boot_device_ro(void)
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{
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return &mem_rdev_rw.rdev;
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}
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const struct region_device *boot_device_rw(void)
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{
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return &mem_rdev_rw.rdev;
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}
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static void test_fmap_locate_area_as_rdev(void **state)
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{
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const char buffer[] = "abcdefghijk0123456789";
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struct region_device rdev;
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assert_int_not_equal(-1, fmap_locate_area_as_rdev("RO_VPD", &rdev));
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assert_int_equal(FMAP_SECTION_RO_VPD_START, region_device_offset(&rdev));
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assert_int_equal(FMAP_SECTION_RO_VPD_SIZE, region_device_sz(&rdev));
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/* Check if locating area second time works */
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assert_int_not_equal(-1, fmap_locate_area_as_rdev("RO_VPD", &rdev));
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assert_int_equal(FMAP_SECTION_RO_VPD_START, region_device_offset(&rdev));
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assert_int_equal(FMAP_SECTION_RO_VPD_SIZE, region_device_sz(&rdev));
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assert_int_not_equal(-1, fmap_locate_area_as_rdev("RECOVERY_MRC_CACHE", &rdev));
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assert_int_equal(FMAP_SECTION_RECOVERY_MRC_CACHE_START, region_device_offset(&rdev));
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assert_int_equal(FMAP_SECTION_RECOVERY_MRC_CACHE_SIZE, region_device_sz(&rdev));
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/* Expect error when writing to read-only area */
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assert_int_equal(-1, rdev_writeat(&rdev, buffer,
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region_device_offset(&rdev), sizeof(buffer)));
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/* Expect error when looking for incorrect area */
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assert_int_equal(-1, fmap_locate_area_as_rdev("NONEXISTENT_AREA", &rdev));
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assert_int_equal(-1, fmap_locate_area_as_rdev("", &rdev));
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assert_int_equal(-1, fmap_locate_area_as_rdev(NULL, &rdev));
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/* Function fmap_locate_area_as_rdev is not tested with NULL
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as region_device pointer as it is not allowed. */
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}
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static void test_fmap_locate_area_as_rdev_rw(void **state)
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{
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struct region_device rdev;
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size_t ro_rw_section_size = FMAP_SECTION_MISC_RW_SIZE;
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char *buffer1 = malloc(ro_rw_section_size);
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char *buffer2 = malloc(ro_rw_section_size);
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char *dummy_data = malloc(ro_rw_section_size);
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/* Fill buffer with dummy data */
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for (int i = 0; i < ro_rw_section_size; ++i)
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dummy_data[i] = '0' + i % ('9' - '0');
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assert_int_not_equal(-1, fmap_locate_area_as_rdev_rw("RW_SECTION_A", &rdev));
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assert_int_equal(FMAP_SECTION_RW_SECTION_A_START, region_device_offset(&rdev));
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assert_int_equal(FMAP_SECTION_RW_SECTION_A_SIZE, region_device_sz(&rdev));
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/* Check if locating area second time works */
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assert_int_not_equal(-1, fmap_locate_area_as_rdev_rw("RW_SECTION_A", &rdev));
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assert_int_equal(FMAP_SECTION_RW_SECTION_A_START, region_device_offset(&rdev));
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assert_int_equal(FMAP_SECTION_RW_SECTION_A_SIZE, region_device_sz(&rdev));
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assert_int_not_equal(-1, fmap_locate_area_as_rdev_rw("MISC_RW", &rdev));
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assert_int_equal(FMAP_SECTION_MISC_RW_START, region_device_offset(&rdev));
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assert_int_equal(FMAP_SECTION_MISC_RW_SIZE, region_device_sz(&rdev));
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/* Expect error when looking for incorrect area */
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assert_int_equal(-1, fmap_locate_area_as_rdev_rw("NONEXISTENT_AREA", &rdev));
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assert_int_equal(-1, fmap_locate_area_as_rdev_rw("", &rdev));
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/* Expect error when passing invalid references */
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assert_int_equal(-1, fmap_locate_area_as_rdev_rw(NULL, &rdev));
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/* Function fmap_locate_area_as_rdev_rw is not tested with NULL
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as region_device pointer as it is not allowed. */
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/* Test if returned section region device is writable */
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assert_int_not_equal(-1, fmap_locate_area_as_rdev_rw("MISC_RW", &rdev));
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assert_int_equal(ro_rw_section_size,
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rdev_readat(&rdev, buffer1, 0, ro_rw_section_size));
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assert_int_equal(ro_rw_section_size,
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rdev_writeat(&rdev, dummy_data, 0, ro_rw_section_size));
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/* Check if written data is visible and correct after locating area as RO */
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assert_int_not_equal(-1, fmap_locate_area_as_rdev("MISC_RW", &rdev));
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assert_int_equal(ro_rw_section_size,
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rdev_readat(&rdev, buffer2, 0, ro_rw_section_size));
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assert_memory_not_equal(buffer1, buffer2, ro_rw_section_size);
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assert_memory_equal(dummy_data, buffer2, ro_rw_section_size);
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free(buffer1);
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free(buffer2);
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free(dummy_data);
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}
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static void test_fmap_locate_area(void **state)
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{
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struct region ar;
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/* Try to locate named area */
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assert_int_not_equal(-1, fmap_locate_area("COREBOOT", &ar));
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assert_int_equal(FMAP_SECTION_COREBOOT_START, region_offset(&ar));
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assert_int_equal(FMAP_SECTION_COREBOOT_SIZE, region_sz(&ar));
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/* Check if locating area second time works */
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assert_int_not_equal(-1, fmap_locate_area("COREBOOT", &ar));
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assert_int_equal(FMAP_SECTION_COREBOOT_START, region_offset(&ar));
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assert_int_equal(FMAP_SECTION_COREBOOT_SIZE, region_sz(&ar));
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/* Look for another area */
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assert_int_not_equal(-1, fmap_locate_area("GBB", &ar));
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assert_int_equal(FMAP_SECTION_GBB_START, region_offset(&ar));
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assert_int_equal(FMAP_SECTION_GBB_SIZE, region_sz(&ar));
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/* Expect error when looking for incorrect area */
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assert_int_equal(-1, fmap_locate_area("NONEXISTENT_AREA", &ar));
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assert_int_equal(-1, fmap_locate_area("", &ar));
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assert_int_equal(-1, fmap_locate_area(NULL, &ar));
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/* Expect error when passing invalid region pointer */
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assert_int_equal(-1, fmap_locate_area("SHARED_DATA", NULL));
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}
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static void test_fmap_find_region_name(void **state)
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{
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(void)state;
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struct region ar;
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char found_area_name[FMAP_STRLEN] = "";
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const char *area_name = "RW_PRESERVE";
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/* Find area by name */
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assert_int_not_equal(-1, fmap_locate_area(area_name, &ar));
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/* Find name of previously located region */
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assert_int_not_equal(-1, fmap_find_region_name(&ar, found_area_name));
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assert_string_equal(area_name, found_area_name);
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/* Expect error when passing invalid buffer */
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assert_int_equal(-1, fmap_find_region_name(&ar, NULL));
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/* Expect error when passing invalid region pointer */
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assert_int_equal(-1, fmap_find_region_name(NULL, found_area_name));
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/* Try to find area outside of flash region */
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ar.offset = FMAP_SECTION_FLASH_START + FMAP_SECTION_FLASH_SIZE + 0x100;
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ar.size = 0x1000;
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assert_int_equal(-1, fmap_find_region_name(&ar, found_area_name));
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/* Try to find area with correct offset and incorrect size */
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ar.offset = FMAP_SECTION_COREBOOT_START;
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ar.size = FMAP_SECTION_COREBOOT_SIZE / 4;
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assert_int_equal(-1, fmap_find_region_name(&ar, found_area_name));
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/* Try to find area with correct size and incorrect offset */
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ar.offset = FMAP_SECTION_GBB_START - 0x100;
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ar.size = FMAP_SECTION_GBB_START;
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assert_int_equal(-1, fmap_find_region_name(&ar, found_area_name));
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/* Try to find area with correct offset overlapping with another area */
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ar.offset = FMAP_SECTION_MISC_RW_START;
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ar.size = FMAP_SECTION_MISC_RW_START + 0x1000;
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assert_int_equal(-1, fmap_find_region_name(&ar, found_area_name));
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}
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static void test_fmap_read_area(void **state)
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{
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const unsigned int section_size = FMAP_SECTION_RW_SECTION_A_SIZE;
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const unsigned int section_start = FMAP_SECTION_RW_SECTION_A_START;
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char *buffer = malloc(section_size);
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/* Find and read area data. Compare with memory device simulating flash. */
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assert_int_equal(section_size, fmap_read_area("RW_SECTION_A", buffer, section_size));
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assert_memory_equal(flash_buffer + section_start, buffer, section_size);
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/* Expect error when reading incorrect area */
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assert_int_equal(-1, fmap_read_area("NONEXISTENT_SECTION", buffer, section_size));
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assert_int_equal(-1, fmap_read_area("", buffer, section_size));
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assert_int_equal(-1, fmap_read_area(NULL, buffer, section_size));
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/* Function fmap_read_area is not tested with NULL
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as output buffer pointer as it is not allowed. */
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free(buffer);
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}
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static void test_fmap_overwrite_area(void **state)
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{
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const char *section_name = "FW_MAIN_A";
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const unsigned int section_size = FMAP_SECTION_FW_MAIN_A_SIZE;
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char *buffer1 = malloc(section_size);
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char *buffer2 = malloc(section_size);
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char *new_data = malloc(section_size / 2);
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char *zero_buffer = malloc(section_size / 2);
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memset(zero_buffer, 0, section_size / 2);
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memset(new_data, 0x42, section_size / 2);
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/* Save buffer for future comparisons */
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assert_int_equal(section_size, fmap_read_area(section_name, buffer1, section_size));
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/* Overwrite part of section. */
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assert_int_equal(section_size / 2,
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fmap_overwrite_area(section_name, new_data, section_size / 2));
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/* Read and check if memory has changed as expected */
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assert_int_equal(section_size, fmap_read_area(section_name, buffer2, section_size));
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assert_memory_not_equal(buffer1, buffer2, section_size);
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/* Check if requested section area was overwritten properly */
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assert_memory_equal(buffer2, new_data, section_size / 2);
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/* Check if rest of section was zero-filled */
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assert_memory_equal(buffer2 + (section_size / 2), zero_buffer, section_size / 2);
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/* Expect error when overwriting incorrect section */
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assert_int_equal(-1, fmap_overwrite_area("NONEXISTENT_SECTION",
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new_data, section_size / 2));
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assert_int_equal(-1, fmap_overwrite_area(NULL, new_data, section_size / 2));
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/* Function fmap_overwrite_area is not tested with NULL
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as input buffer pointer as it is not allowed. */
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free(buffer1);
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free(buffer2);
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free(new_data);
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free(zero_buffer);
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}
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int main(void)
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{
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const struct CMUnitTest tests[] = {
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cmocka_unit_test_setup_teardown(test_fmap_locate_area_as_rdev,
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setup_fmap, teardown_fmap),
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cmocka_unit_test_setup_teardown(test_fmap_locate_area_as_rdev_rw,
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setup_fmap, teardown_fmap),
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cmocka_unit_test_setup_teardown(test_fmap_locate_area,
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setup_fmap, teardown_fmap),
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cmocka_unit_test_setup_teardown(test_fmap_find_region_name,
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setup_fmap, teardown_fmap),
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cmocka_unit_test_setup_teardown(test_fmap_read_area,
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setup_fmap, teardown_fmap),
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cmocka_unit_test_setup_teardown(test_fmap_overwrite_area,
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setup_fmap, teardown_fmap),
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};
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return cmocka_run_group_tests(tests, NULL, NULL);
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}
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