1 .. SPDX-License-Identifier: GPL-2.0+
13 qfw load [kernel_addr [initrd_addr]]
18 The *qfw* command is used to retrieve information form the QEMU firmware.
20 The *qfw list* sub-command displays the QEMU firmware files.
22 The *qfw cpus* sub-command displays the available CPUs.
24 The *qfw load* command is used to load a kernel and an initial RAM disk.
27 address to which the file specified by the -kernel parameter of QEMU shall
28 be loaded. Defaults to environment variable *loadaddr* and further to
29 the value of *CONFIG_SYS_LOAD_ADDR*.
32 address to which the file specified by the -initrd parameter of QEMU shall
33 be loaded. Defaults to environment variable *ramdiskaddr* and further to
34 the value of *CFG_RAMDISK_ADDR*.
39 QEMU firmware files are listed via the *qfw list* command:
45 etc/smbios/smbios-tables
46 etc/smbios/smbios-anchor
57 The available CPUs can be shown via the *qfw cpus* command:
64 The *-kernel* and *-initrd* parameters allow to specify a kernel and an
65 initial RAM disk for QEMU:
69 $ qemu-system-x86_64 -machine pc-i440fx-2.5 -bios u-boot.rom -m 1G \
70 -nographic -kernel vmlinuz -initrd initrd
72 Now the kernel and the initial RAM disk can be loaded to the U-Boot memory via
73 the *qfw load* command and booted thereafter.
77 => qfw load ${kernel_addr_r} ${ramdisk_addr_r}
78 loading kernel to address 0000000001000000 size 5048f0 initrd 0000000004000000 size 3c94891
79 => zboot 1000000 5048f0 4000000 3c94891
82 Linux kernel version 4.19.0-14-amd64 (debian-kernel@lists.debian.org) #1 SMP Debian 4.19.171-2 (2021-01-30)
83 Building boot_params at 0x00090000
84 Loading bzImage at address 100000 (5260160 bytes)
89 The qfw command is only available if CONFIG_CMD_QFW=y.