Use programmatic boot so that it is possible to boot without
CONFIG_CMDLINE enabled.
Series-to: u-boot
Cover-letter:
emulation: Improve support for booting from QFW
U-Boot supports booting Linux from QFW which means that the kernel and
any initrd are provided on the QEMU command line instead of being found
in boot media.
This series improves this support in several ways:
- Enhances bootstd to implement 'bootflow read', thus allowing the
files to be loaded and inspected (with potential cmdline changes)
before booting
- Updates bootstd to use programmatic boot, so that it works even when
CONFIG_CMDLINE is disabled
- Expands build-qemu script to allow providing cmdline and root disk
It also includes a rough script to time U-Boot when running QEMU with
kvm, making use of the qemu-boot-time repo:
https://github.com/stefano-garzarella/qemu-boot-time.git
END
Signed-off-by: Simon Glass <sjg@chromium.org>
The zboot option is used on x86, so add support for it. Use the
programmatic boot API rather than building a command to run, so that it
can work without CONFIG_CMDLINE
For now the other boot options still use the cmdline.
Signed-off-by: Simon Glass <sjg@chromium.org>
It is useful to be able to read the images into memory without actually
booting the kernel. This allows the cmdline to be changed using
'bootflow cmd', for example. Implement this for the QFW bootmeth.
Signed-off-by: Simon Glass <sjg@chromium.org>
Add documentation for the qfw bootmeth.
Fix up the compatible string to drop the 'extlinux' part, which is not
relevant to this bootmeth.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Quentin Schulz <quentin.schulz@cherry.de>
Reviewed-by: Mattijs Korpershoek <mkorpershoek@baylibre.com>
