Dear GRUB folks,
When using GRUB as a coreboot payload, that means passing `--with-
platform=coreboot` to configure, and configuring it to load the GRUB
configuration file from disk, `/boot/grub/grub.cfg` in Debian 8.7
(Jessie/stable) and 9 (Stretch/testing), generated by GRUB shipped by
the GNU/Linux distribution, I get a warning about the missing module
`all_video.mod`, and the enter key has to be pressed to continue
booting.
The function `load_video` in `/boot/grub/grub.cfg` is causing this.
```
function load_video {
if [ x$feature_all_video_module = xy ]; then
insmod all_video
else
insmod efi_gop
insmod efi_uga
insmod ieee1275_fb
insmod vbe
insmod vga
insmod video_bochs
insmod video_cirrus
fi
}
```
This get added by `update-grub` from `/etc/grub.d/00_header`.
```
cat <<EOF
function load_video {
EOF
if [ -n "${GRUB_VIDEO_BACKEND}" ]; then
cat <<EOF
insmod ${GRUB_VIDEO_BACKEND}
EOF
else
# If all_video.mod isn't available load all modules available
# with versions prior to introduction of all_video.mod
cat <<EOF
if [ x\$feature_all_video_module = xy ]; then
insmod all_video
else
insmod efi_gop
insmod efi_uga
insmod ieee1275_fb
insmod vbe
insmod vga
insmod video_bochs
insmod video_cirrus
fi
EOF
fi
```
Do you know of a way to make that compatible with grub-pc and GRUB
payload? That’s useful, as the hard disk can be connected to a system
running coreboot with SeaBIOS or GRUB as a payload, or a proprietary
vendor firmware.
Kind regards,
Paul
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