| .. SPDX-License-Identifier: GPL-2.0+: | |
| QFW Bootmeth | |
| ============ | |
| `QEMU <https://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. |