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