mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-24 12:03:39 +00:00
2f45b3041e
All platforms define CONFIG_SYS_LOAD_ADDR, but only some define CONFIG_LOADADDR. Very very rarely are these not the same address, and qemu-ppce500 is one such case. However, based on reading the history of the code, this mismatched value was simply a copy-paste from other PowerPC platforms where it is this unused currently. Switch the code to use CONFIG_SYS_LOAD_ADDR and update the documentation. Cc: Bin Meng <bmeng.cn@gmail.com> Signed-off-by: Tom Rini <trini@konsulko.com> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
89 lines
2.2 KiB
ReStructuredText
89 lines
2.2 KiB
ReStructuredText
.. SPDX-License-Identifier: GPL-2.0+
|
|
|
|
qfw command
|
|
===========
|
|
|
|
Synopsis
|
|
--------
|
|
|
|
::
|
|
|
|
qfw list
|
|
qfw cpus
|
|
qfw load [kernel_addr [initrd_addr]]
|
|
|
|
Description
|
|
-----------
|
|
|
|
The *qfw* command is used to retrieve information form the QEMU firmware.
|
|
|
|
The *qfw list* sub-command displays the QEMU firmware files.
|
|
|
|
The *qfw cpus* sub-command displays the available CPUs.
|
|
|
|
The *qfw load* command is used to load a kernel and an initial RAM disk.
|
|
|
|
kernel_addr
|
|
address to which the file specified by the -kernel parameter of QEMU shall
|
|
be loaded. Defaults to environment variable *loadaddr* and further to
|
|
the value of *CONFIG_SYS_LOAD_ADDR*.
|
|
|
|
initrd_addr
|
|
address to which the file specified by the -initrd parameter of QEMU shall
|
|
be loaded. Defaults to environment variable *ramdiskaddr* and further to
|
|
the value of *CONFIG_RAMDISK_ADDR*.
|
|
|
|
Examples
|
|
--------
|
|
|
|
QEMU firmware files are listed via the *qfw list* command:
|
|
|
|
::
|
|
|
|
=> qfw list
|
|
etc/boot-fail-wait
|
|
etc/smbios/smbios-tables
|
|
etc/smbios/smbios-anchor
|
|
etc/e820
|
|
genroms/kvmvapic.bin
|
|
genroms/linuxboot.bin
|
|
etc/system-states
|
|
etc/acpi/tables
|
|
etc/table-loader
|
|
etc/tpm/log
|
|
etc/acpi/rsdp
|
|
bootorder
|
|
|
|
The available CPUs can be shown via the *qfw cpus* command:
|
|
|
|
::
|
|
|
|
=> qfw cpu
|
|
2 cpu(s) online
|
|
|
|
The *-kernel* and *-initrd* parameters allow to specify a kernel and an
|
|
initial RAM disk for QEMU:
|
|
|
|
.. code-block:: bash
|
|
|
|
$ qemu-system-x86_64 -machine pc-i440fx-2.5 -bios u-boot.rom -m 1G \
|
|
-nographic -kernel vmlinuz -initrd initrd
|
|
|
|
Now the kernel and the initial RAM disk can be loaded to the U-Boot memory via
|
|
the *qfw load* command and booted thereafter.
|
|
|
|
::
|
|
|
|
=> qfw load ${kernel_addr_r} ${ramdisk_addr_r}
|
|
loading kernel to address 0000000001000000 size 5048f0 initrd 0000000004000000 size 3c94891
|
|
=> zboot 1000000 5048f0 4000000 3c94891
|
|
Valid Boot Flag
|
|
Magic signature found
|
|
Linux kernel version 4.19.0-14-amd64 (debian-kernel@lists.debian.org) #1 SMP Debian 4.19.171-2 (2021-01-30)
|
|
Building boot_params at 0x00090000
|
|
Loading bzImage at address 100000 (5260160 bytes)
|
|
|
|
Configuration
|
|
-------------
|
|
|
|
The qfw command is only available if CONFIG_CMD_QFW=y.
|