configs/qemu_sh4*: switch back to disk emulation
Back in commit
44a6b7866c95ca5459a53a50eab5ab1d38b6b8e1 ("configs/qemu_sh4*: switch
to initramfs"), the Qemu SuperH defconfigs were switched to initramfs
due to a bug in the Qemu disk emulation.
However, the initramfs solution has an issue: if the initramfs is
slightly too large (like just 6 MB!), the system no longer boots.
Since the disk emulation problem has apparently been resolved in Qemu
10 (according to testing), let's switch back to this.
In addition to essentially reverting
44a6b7866c95ca5459a53a50eab5ab1d38b6b8e1, we also need to adjust the
kernel configuration so that the kernel takes its command line for the
bootloader (in our case from the Qemu -append option). Otherwise an
hardcoded command line is used, which doesn't mount /dev/sda as the
root filesystem.
This update has been tested on Gitlab CI:
https://gitlab.com/tpetazzoni/buildroot/-/pipelines/1968267919
Thanks to Romain Naour for pointing to the initramfs size as being the
issue.
Cc: Romain Naour <romain.naour@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Julien Olivain <ju.o@free.fr>
Thomas Petazzoni