firmware_read
if (firmware_read(fw_hdl, 0, fw_data, fw_size) != 0) {
if (firmware_read(fw_hdl, 0, cfdata, cflen) != 0) {
error = firmware_read(fwh, 0, fw->data, fw->size);
extern int firmware_read(firmware_handle_t, off_t, void *, size_t);