diff options
| author | Vitali64 <vitali64pmemail@protonmail.com> | 2021-12-28 19:23:10 +0100 |
|---|---|---|
| committer | Leah Rowe <leah@libreboot.org> | 2021-12-29 01:03:18 +0000 |
| commit | cff081c6dbdeed721ad5fd59943e9a020a9299af (patch) | |
| tree | fb823bf6275ada4ed204852c4333c1c2c79f96db /resources/grub/config/grub.cfg | |
| parent | 72217829404a3ab77d949556417dd0c56dcee256 (diff) | |
Fix grub's slow boot
On many boards, grub takes a very long time to
search for a grub.cfg file on the disk.
The problem is the search_grub function which
takes a long time to complete.
I (vitali64) studied the grub.cfg from 2016 and
the grub.cfg from 2021 and optimized the
grub.cfg. It should be faster now.
Diffstat (limited to 'resources/grub/config/grub.cfg')
| -rw-r--r-- | resources/grub/config/grub.cfg | 25 |
1 files changed, 17 insertions, 8 deletions
diff --git a/resources/grub/config/grub.cfg b/resources/grub/config/grub.cfg index 37b83728..5cda2329 100644 --- a/resources/grub/config/grub.cfg +++ b/resources/grub/config/grub.cfg @@ -47,16 +47,25 @@ function try_user_config { } function search_grub { echo -n "Attempting to load grub.cfg from: " - unset ddev - if [ (${1}?) != "(${1}?)" ]; then - ddev=(${1}*) # Both raw and partitioned devices - fi - for i in ${ddev}; do - echo -n "${i} " - try_user_config "${i}" + # TODO : Find a better way to detect how many disks + # : are on the computer instead of hardcoding. + # FIXME: Does this work on all boards? + for i in 0 1 2 3 4 5 6 7 8 9 10 11; do + # TODO : Find a better way to detect how many partitions + # : are on the disk instead of hardcoding. + echo "\nTrying disk ${1}${i}" + for part in 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20; do + # MBR/GPT partitions + echo "\nTrying partiton ${part}" + try_user_config "(${1}${i},${part})" + done + # raw devices + echo "\nTrying to boot to a raw disk ..." + try_user_config "(${1}${i})" + echo # Insert newline done - echo # Insert newline } + function try_isolinux_config { set root="${1}" for dir in '' /boot; do |