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Add support for configuring systemd-boot with kernelstub

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HikariKnight 2022-03-10 18:34:37 +01:00
parent 85ab1278c5
commit 8d55256d00
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GPG key ID: E8B239063B022F5A
1 changed files with 75 additions and 9 deletions
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84
lib/set_CMDLINE.sh
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@ -1,6 +1,33 @@
#!/bin/bash
function set_CMDLINE () {
function set_KERNELSTUB () {
clear
# Tell what we are going to do
echo "Adding vfio kernel arguments to systemd-boot using kernelstub"
# Get the config paths
source "${SCRIPTDIR}/lib/paths.sh"
# Check if systemd-boot already has vfio parameters from before
KERNELSTUB_TEST=$(sudo kernelstub -p 2>&1 | grep "Kernel Boot Options" | perl -pe "s/.+Kernel Boot Options:\..+(vfio_pci.ids=.+ ).+/\1/")
# If there are already vfio_pci parameters in kernelstub
if [[ "$KERNELSTUB_TEST" =~ vfio_pci.ids ]] ;
then
# Remove the old parameters
sudo kernelstub -d "$KERNELSTUB_TEST"
sudo kernelstub -d "vfio_pci.disable_vga=1"
sudo kernelstub -d "vfio_pci.disable_vga=0"
fi
# Apply new parameters
CMDLINE=$(cat "${SCRIPTDIR}/config/kernel_args")
sudo kernelstub -a "$CMDLINE"
show_FINISH
}
function show_FINISH () {
clear
# Get the config paths
source "${SCRIPTDIR}/lib/paths.sh"
@ -8,26 +35,65 @@ function set_CMDLINE () {
local CMDLINE
CMDLINE=$(cat "${SCRIPTDIR}/config/kernel_args")
echo "Configuration is now complete!
echo "Configuration is now complete!"
For VFIO to work properly you need to make sure these kernel parameters are in your bootloader entry:
if [ $1 == 0 ];
then
printf "For VFIO to work properly you need to make sure these kernel parameters are in your bootloader entry:
#-----------------------------------------------#
$CMDLINE
%s
#-----------------------------------------------#
" "$CMDLINE"
fi
echo "Restart your system and run
\"$SCRIPTDIR/vfio-verify\"
to check if your GPU is properly set up.
If the graphic card is bound to vfio-pci then you can
proceed to add it to your virtual machines.
A backup the files we replaced on your system can be found inside
$SCRIPTDIR/backup/
In order to restore these files just copy them back to your system and run
\"sudo update-initramfs -u\"
You can remove the the vfio_pci kernel arguments from the linux line in your bootloader to disable/unbind the graphic card from the vfio driver on boot.
Finally reboot your system and run \"$SCRIPTDIR/vfio-verify\" to check if your GPU is properly set up.
NOTE: Some AMD GPUs will require the vendor-reset kernel module from https://github.com/gnif/vendor-reset to be installed!
You can remove the the vfio_pci kernel arguments from the linux line in your bootloader
to disable/unbind the graphic card from the vfio driver on boot.
The files inside \"$SCRIPTDIR/$QUICKEMU\" are currently unused files, however they provide
the required information that the QuickEMU project can hook into and use to add support for VFIO enabled VMs.
"
The PCI Devices with these IDs are what you should add to your VMs:
NOTE: Some AMD GPUs will require the vendor-reset kernel module from https://github.com/gnif/vendor-reset to be installed!"
source "$SCRIPTDIR/config/quickemu/qemu-vfio_vars.conf"
for dev in "${GPU_PCI_ID[@]}"
do
echo "* $dev"
done
for dev in "${USB_CTL_ID[@]}"
do
echo "* $dev"
done
}
function set_CMDLINE () {
# Make a variable to tell if
local BOOTLOADER_AUTOCONFIG
BOOTLOADER_AUTOCONFIG=0
# If kernelstub is detected (program to manage systemd-boot)
if which kernelstub ;
then
# Configure kernelstub then exit
set_KERNELSTUB
BOOTLOADER_AUTOCONFIG=1
fi
show_FINISH $BOOTLOADER_AUTOCONFIG
}