QFW Bootmeth

QEMU 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.