pnp_mem_start
tpm_dev.map_base = pnp_mem_start(dev, 0);
!pnp_mem_start(dev, 0) && pnp_mem_len(dev, 0) <= 1 &&
uart.port.mapbase = pnp_mem_start(dev, 0);
mem[idx] = pnp_mem_start(pnp_dev, 0);