示例#1
0
文件: flash.c 项目: fourier49/BIZ_EC
int flash_check_prot_reg(unsigned int offset, unsigned int bytes)
{
	unsigned int start;
	unsigned int len;
	uint8_t sr1 = 0, sr2 = 0;
	int rv = EC_SUCCESS;

	sr1 = flash_get_status1();
	sr2 = flash_get_status2();

	/* Invalid value */
	if (offset + bytes > CONFIG_FLASH_PHYSICAL_SIZE)
		return EC_ERROR_INVAL;

	/* Compute current protect range */
	rv = reg_to_protect(sr1, sr2, &start, &len);
	if (rv)
		return rv;

	/* Check if ranges overlap */
	if (MAX(start, offset) < MIN(start + len, offset + bytes))
		return EC_ERROR_ACCESS_DENIED;

	return EC_SUCCESS;

}
示例#2
0
static int flash_command_spi_info(struct host_cmd_handler_args *args)
{
	struct ec_response_flash_spi_info *r = args->response;

	flash_get_jedec_id(r->jedec);
	r->reserved0 = 0;
	flash_get_mfr_dev_id(r->mfr_dev_id);
	r->sr1 = flash_get_status1();
	r->sr2 = flash_get_status2();

	args->response_size = sizeof(*r);
	return EC_RES_SUCCESS;
}
示例#3
0
文件: flash.c 项目: fourier49/BIZ_EC
int flash_write_prot_reg(unsigned int offset, unsigned int bytes)
{
	int rv;
	uint8_t sr1 = flash_get_status1();
	uint8_t sr2 = flash_get_status2();

	/* Invalid values */
	if (offset + bytes > CONFIG_FLASH_SIZE)
		return EC_ERROR_INVAL;

	/* Compute desired protect range */
	rv = protect_to_reg(offset, bytes, &sr1, &sr2);
	if (rv)
		return rv;

	return flash_set_status_for_prot(sr1, sr2);
}