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grub.cfg: use grub_scan_disk to set boot order 

Previously, grub_scan_disk could set ata, ahci or "both",
which would make both be tried (ahci first). This worked
when we only dealt with ata and ahci devices, but now we
support nvme devices so the logic is inherently flawed.

Instead, use grub_scan_disk to store the boot order, e.g.:

grub_scan_disk="ahci nvme ata"

grub_scan_disk="nvme ata"

In the first example, it would make GRUB scan ahci first,
then nvme and then ata.

In the secontd example, it would make GRUB scan nvme first,
and then ata.

If "both" is set, or anything other than ahci/ata/nvme,
grub_scan_disk is now changed to "nvme ahci ata".

Actual grub_scan_disk entries in target.cfg files will now
be modified, to match each machine.

Signed-off-by: Leah Rowe <leah@libreboot.org>
20240612_branch
Leah Rowe 2024-05-27 20:16:49 +01:00
parent c94cecd837
commit e1883f1d5a
2 changed files with 31 additions and 26 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

26
config/grub/config/grub.cfg
View File

@ -50,7 +50,7 @@ if [ -f (cbfsdisk)/timeout.cfg ]; then
else
set timeout=5
fi
set grub_scan_disk="both"
set grub_scan_disk="nvme ahci ata"
if [ -f (cbfsdisk)/scan.cfg ]; then
source (cbfsdisk)/scan.cfg
fi
@ -139,15 +139,9 @@ function search_bootcfg {
}
menuentry 'Load Operating System (incl. fully encrypted disks) [o]' --hotkey='o' {
if [ "${grub_scan_disk}" != "ata" ]; then
search_bootcfg ahci
fi
if [ "${grub_scan_disk}" != "ahci" ]; then
search_bootcfg ata
fi
if [ "${grub_scan_disk}" != "nvme" ]; then
search_bootcfg nvme
fi
for grub_disk in ${grub_scan_disk}; do
search_bootcfg ${grub_disk}
done
# grub device enumeration is very slow, so checks are hardcoded
@ -169,22 +163,22 @@ menuentry 'Load Operating System (incl. fully encrypted disks) [o]' --hotkey='o
unset nvmedev
for i in 11 10 9 8 7 6 5 4 3 2 1 0; do
for part in 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1; do
if [ "${grub_scan_disk}" != "ata" ]; then
for grub_disk in ${grub_scan_disk}; do
if [ "${grub_disk}" = "ahci" ]; then
ahcidev="(ahci${i},${part}) ${ahcidev}"
fi
if [ "${grub_scan_disk}" != "ahci" ]; then
elif [ "${grub_disk}" = "ata" ]; then
atadev="(ata${i},${part}) ${atadev}"
fi
if [ "${grub_scan_disk}" != "nvme" ]; then
elif [ "${grub_disk}" = "nvme" ]; then
# TODO: do we care about other namesapces
nvmedev="(nvme${i}n1,${part}) ${nvmedev}"
fi
done
done
done
set pager=0
echo -n "Attempting to unlock encrypted volumes"
for dev in ${ahcidev} ${atadev} ${nvmedev} ${lvmvol} ${raidvol}; do
for dev in ${nvmedev} ${ahcidev} ${atadev} ${lvmvol} ${raidvol}; do
if cryptomount "${dev}" ; then break ; fi
done
set pager=1

19
script/roms
View File

@ -150,9 +150,21 @@ configure_target()
# Override the above defaults using target.cfg
. "$targetdir/target.cfg"
[ -z "$grub_scan_disk" ] && grub_scan_disk="both"
[ "$grub_scan_disk" != "both" ] && [ "$grub_scan_disk" != "ata" ] && \
[ "$grub_scan_disk" != "ahci" ] && grub_scan_disk="both"
[ -z "$grub_scan_disk" ] && grub_scan_disk="nvme ahci ata"
_ata=""
_ahci=""
_nvme=""
_grub_scan_disk=""
for _disk in $grub_scan_disk; do
[ "$_disk" != "nvme" ] && [ "$_disk" != "ahci" ] && \
[ "$_disk" != "ata" ] && _grub_scan_disk="nvme ahci ata" \
&& break
eval "[ -n \"\$_$_disk\" ] && continue"
eval "_$_disk=\"$_disk\""
_grub_scan_disk="$_grub_scan_disk $_disk"
done
[ -z "$_grub_scan_disk" ] && _grub_scan_disk="nvme ahci ata"
grub_scan_disk="${_grub_scan_disk# }"
[ -z "$tree" ] && $err "$board: tree not defined"
@ -333,7 +345,6 @@ build_grub_roms()
tmpcfg="$(mktemp -t coreboot_rom.XXXXXXXXXX)"
printf "set grub_scan_disk=\"%s\"\n" "$grub_scan_disk" > "$tmpcfg" || \
$err "set grub_scandisk, $grub_scan_disk, $tmpcfg"
[ "$grub_scan_disk" = "both" ] || \
x_ "$cbfstool" "$tmprom" add -f "$tmpcfg" -n scan.cfg -t raw
printf "set timeout=%s\n" "$grub_timeout" > "$tmpcfg" || \
$err "set timeout, $grub_timeout, $tmpcfg"