Function create_devices_node

arch/src/aarch64/fdt.rs:882–913

(
    fdt: &mut FdtWriter,
    dev_info: &HashMap<(DeviceType, String), T, S>,
)

}

fn create_devices_node<T: DeviceInfoForFdt + Clone + Debug, S: ::std::hash::BuildHasher>(
    fdt: &mut FdtWriter,
    dev_info: &HashMap<(DeviceType, String), T, S>,
) -> FdtWriterResult<()> {
    // Create one temp Vec to store all virtio devices
    let mut ordered_virtio_device: Vec<&T> = Vec::new();

    for ((device_type, _device_id), info) in dev_info {
        match device_type {
            DeviceType::Gpio => create_gpio_node(fdt, info)?,
            DeviceType::Rtc => create_rtc_node(fdt, info)?,
            DeviceType::Serial => create_serial_node(fdt, info)?,
            DeviceType::Virtio(_) => {
                ordered_virtio_device.push(info);
            }
            #[cfg(feature = "fw_cfg")]
            DeviceType::FwCfg => create_fw_cfg_node(fdt, info)?,
        }
    }

    // Sort out virtio devices by address from low to high and insert them into fdt table.
    ordered_virtio_device.sort_by_key(|&a| a.addr());
    // Current address allocation strategy in cloud-hypervisor is: the first created device
    // will be allocated to higher address. Here we reverse the vector to make sure that
    // the older created device will appear in front of the newer created device in FDT.
    ordered_virtio_device.reverse();
    for ordered_device_info in ordered_virtio_device.drain(..) {
        create_virtio_node(fdt, ordered_device_info)?;
    }

    Ok(())
}

fn create_pmu_node(fdt: &mut FdtWriter) -> FdtWriterResult<()> {
    let compatible = "arm,armv8-pmuv3";