| .. SPDX-License-Identifier: GPL-2.0+: |
| |
| QFW Bootmeth |
| ============ |
| |
| `QEMU <hhttps://www.qemu.org/>`_ is a system emulator which is able to boot |
| Operating Systems. QEMU provides specific support for booting an OS image |
| provided on the QEMU command line. |
| |
| When invoked on a bootdev for UCLASS_QFW, this bootmeth reads the kernel |
| provided by the QEMU `-kernel` argument, the initial ramdisk provided by |
| `-initrd` and the boot arguments (command line) provided by `-append` into |
| memory ready for booting. |
| |
| When the bootflow is booted, the bootmeth tries the `booti` command first, then |
| falls back to the `bootz` command. U-Boot's 'control' devicetree is passed |
| through to the kernel. |
| |
| The compatible string "u-boot,qfw-bootmeth" is used for the driver. It is |
| present if `CONFIG_QFW` is enabled. |