Function load_spd_cache

src/lib/spd_cache.c:95–117

* Locate the RW_SPD_CACHE area in the fmap and read SPD_CACHE data. * return CB_SUCCESS ,if the SPD_CACHE data is ready and the pointer return at *spd_cache. * return CB_ERR ,if it cannot locate RW_SPD_CACHE area in the fmap or data cannot be read. */

 *  return CB_ERR ,if it cannot locate RW_SPD_CACHE area in the fmap or data cannot be read.
 */
enum cb_err load_spd_cache(uint8_t **spd_cache, size_t *spd_cache_sz)
{
	struct region_device rdev;

	if (fmap_locate_area_as_rdev(SPD_CACHE_FMAP_NAME, &rdev) < 0) {
		printk(BIOS_ERR, "SPD_CACHE: Cannot find %s region\n", SPD_CACHE_FMAP_NAME);
		return CB_ERR;
	}

	/* Assume boot device is memory mapped. */
	assert(CONFIG(BOOT_DEVICE_MEMORY_MAPPED));
	*spd_cache = rdev_mmap_full(&rdev);

	if (*spd_cache == NULL)
		return CB_ERR;

	*spd_cache_sz = region_device_sz(&rdev);

	/* SPD cache found */
	printk(BIOS_INFO, "SPD_CACHE: cache found, size 0x%zx\n", *spd_cache_sz);

	return CB_SUCCESS;
}

/* Use to verify the cache data is valid. */
bool spd_cache_is_valid(uint8_t *spd_cache, size_t spd_cache_sz)