C++ (Cpp) system_get_image_used Examples

Example #1

File: vboot_hash.c Project: thehobn/ec

static int command_hash(int argc, char **argv)
{
	uint32_t offset = CONFIG_FW_RW_OFF;
	uint32_t size = CONFIG_FW_RW_SIZE;
	char *e;

	if (argc == 1) {
		ccprintf("Offset: 0x%08x\n", data_offset);
		ccprintf("Size:   0x%08x (%d)\n", data_size, data_size);
		ccprintf("Digest: ");
		if (want_abort)
			ccprintf("(aborting)\n");
		else if (in_progress)
			ccprintf("(in progress)\n");
		else if (hash)
			ccprintf("%.*h\n", SHA256_DIGEST_SIZE, hash);
		else
			ccprintf("(invalid)\n");

		return EC_SUCCESS;
	}

	if (argc == 2) {
		if (!strcasecmp(argv[1], "abort")) {
			vboot_hash_abort();
			return EC_SUCCESS;
		} else if (!strcasecmp(argv[1], "rw")) {
			return vboot_hash_start(
				CONFIG_FW_RW_OFF,
				system_get_image_used(SYSTEM_IMAGE_RW),
				NULL, 0);
		} else if (!strcasecmp(argv[1], "ro")) {
			return vboot_hash_start(
				CONFIG_FW_RO_OFF,
				system_get_image_used(SYSTEM_IMAGE_RO),
				NULL, 0);
		}
	}

	if (argc >= 3) {
		offset = strtoi(argv[1], &e, 0);
		if (*e)
			return EC_ERROR_PARAM1;

		size = strtoi(argv[2], &e, 0);
		if (*e)
			return EC_ERROR_PARAM2;
	}

	if (argc == 4) {
		int nonce = strtoi(argv[3], &e, 0);
		if (*e)
			return EC_ERROR_PARAM3;

		return vboot_hash_start(offset, size,
					(const uint8_t *)&nonce,
					sizeof(nonce));
	} else
		return vboot_hash_start(offset, size, NULL, 0);
}

Example #2

File: vboot_hash.c Project: thehobn/ec

/**
 * Start computing a hash, with sanity checking on params.
 *
 * @return EC_RES_SUCCESS if success, or other result code on error.
 */
static int host_start_hash(const struct ec_params_vboot_hash *p)
{
	int offset = p->offset;
	int size = p->size;
	int rv;

	/* Sanity-check input params */
	if (p->hash_type != EC_VBOOT_HASH_TYPE_SHA256)
		return EC_RES_INVALID_PARAM;
	if (p->nonce_size > sizeof(p->nonce_data))
		return EC_RES_INVALID_PARAM;

	/* Handle special offset values */
	if (offset == EC_VBOOT_HASH_OFFSET_RO) {
		offset = CONFIG_FW_RO_OFF;
		size = system_get_image_used(SYSTEM_IMAGE_RO);
	} else if (p->offset == EC_VBOOT_HASH_OFFSET_RW) {
		offset = CONFIG_FW_RW_OFF;
		size = system_get_image_used(SYSTEM_IMAGE_RW);
	}

	rv = vboot_hash_start(offset, size, p->nonce_data, p->nonce_size);

	if (rv == EC_SUCCESS)
		return EC_RES_SUCCESS;
	else if (rv == EC_ERROR_INVAL)
		return EC_RES_INVALID_PARAM;
	else
		return EC_RES_ERROR;
}

Example #3

File: vboot_hash.c Project: akappy7/ChromeOS_EC_LED_Diagnostics

static void vboot_hash_init(void)
{
#ifdef CONFIG_SAVE_VBOOT_HASH
	const struct vboot_hash_tag *tag;
	int version, size;

	tag = (const struct vboot_hash_tag *)system_get_jump_tag(
		VBOOT_HASH_SYSJUMP_TAG, &version, &size);
	if (tag && version == VBOOT_HASH_SYSJUMP_VERSION &&
	    size == sizeof(*tag)) {
		/* Already computed a hash, so don't recompute */
		CPRINTS("hash precomputed");
		hash = tag->hash;
		data_offset = tag->offset;
		data_size = tag->size;
	} else
#endif
	{
		/* Start computing the hash of RW firmware */
		vboot_hash_start(CONFIG_EC_WRITABLE_STORAGE_OFF +
				 CONFIG_RW_STORAGE_OFF,
				 system_get_image_used(SYSTEM_IMAGE_RW),
				 NULL, 0);
	}
}