mirror of
https://github.com/libretro/Lakka-LibreELEC.git
synced 2025-11-04 00:59:00 +00:00
248 lines
6.7 KiB
Bash
Executable File
248 lines
6.7 KiB
Bash
Executable File
#!/bin/sh
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# SPDX-License-Identifier: GPL-2.0
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# Copyright (C) 2016-present Team LibreELEC (https://libreelec.tv)
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#
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# exit 1 = unsupported GPU
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# exit 2 = dual boot system
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# exit 3 = no backup for syslinux.cfg or extlinux.conf
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# exit 4 = extlinux.conf and syslinux.cfg are available
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# exit 5 = changes are already made either to extlinux.conf or syslinux.cfg
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# exit 6 = xorg.conf already exists in /storage/.config
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# exit 7 = more than a single device detected
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# Help message and usage explanation
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help() {
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echo "This script generates a custom EDID depending on your GPU"
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echo ""
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echo "To check which GPU you are using, use: getedid gpu"
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echo ""
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echo "To create a custom EDID, just use this script like: getedid create"
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echo ""
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echo "If you don't want to use the created EDID file anymore use: getedid delete"
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echo ""
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echo "If your hardware or kernel has changed and you want to have a custom EDID again, then you have to delete the old EDID first."
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echo "For this use: getedid delete "
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echo "And then use: getedid create"
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}
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# check for GPU and store string
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check_gpu() {
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if lspci | grep -i vga | grep -i -q -E 'intel|amd' ; then
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gpu="intel/amd"
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elif lspci | grep -i vga | grep -i -q nvidia; then
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gpu="nvidia"
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else
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echo "GPU is not supported"
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exit 1
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fi
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}
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# run this first if the user already has a custom EDID but want to create a new one (TV or AVR change)
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del_edid() {
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if [ "$gpu" = "intel/amd" ]; then
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check_file
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if [ -f "$file".old ]; then
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mount_rw
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rm "$file"
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mv "$file".old "$file"
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rm -f /flash/edid.cpio
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mount_ro
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sys_reboot
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else
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echo "You don't have a backup file for $file. You did not use this script to create the custom EDID"
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echo "Therefore we can't be sure the script is working properly. Exiting"
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exit 3
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fi
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else
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rm -f /storage/.config/xorg.conf
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rm -f /storage/.config/xorg.le.backup
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systemctl restart xorg.service
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fi
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}
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# run main script depending on the GPU
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run() {
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if [ "$gpu" = "intel/amd" ]; then
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intel_amd
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elif [ "$gpu" = "nvidia" ]; then
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nvidia
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fi
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}
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# mounting /flash to rw
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mount_rw() {
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mount -o remount,rw /flash
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}
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# mounting /flash to ro
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mount_ro() {
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mount -o remount,ro /flash
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}
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# remount /flash to ro and reboot
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sys_reboot() {
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mount_ro
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echo "The system is rebooting in 15 seconds"
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sleep 15
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reboot
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}
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# check syslinux.cfg and/or extlinux.conf
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check_file() {
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# check boot system
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if [ -d /sys/firmware/efi -a -f /flash/EFI/BOOT/syslinux.cfg ] ; then
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sys_boot="UEFI"
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sys_path="/flash/EFI/BOOT"
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else
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sys_boot="BIOS"
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sys_path="/flash"
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fi
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# check which file is available
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if [ -f "$sys_path/syslinux.cfg" -a -f "$sys_path/extlinux.conf" ]; then
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echo "Your system contains both a /flash/syslinux.cfg and a /flash/extlinux.conf file"
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echo "Something is wrong on your system. Exiting"
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exit 4
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elif [ -f "$sys_path/extlinux.conf" ]; then
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file="$sys_path/extlinux.conf"
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elif [ -f "$sys_path/syslinux.cfg" ]; then
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file="$sys_path/syslinux.cfg"
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else
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echo "You neither have a extlinux.conf nor do you have a syslinux.cfg."
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echo "Dual boot systems aren't supported"
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exit 2
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fi
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}
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check_content() {
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# check if changes are already made to $file and exit if yes
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if grep -q "initrd=/edid.cpio" $file ; then
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echo "$file has been modified. Please run 'getedid delete' first if you want to modify it again. Exiting."
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exit 5
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fi
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}
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create_edid() {
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# create edid
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mkdir -p /tmp/cpio/lib/firmware/edid
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cat "/sys/class/drm/$card/edid" > /tmp/cpio/lib/firmware/edid/edid.bin
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mkdir -p /storage/.config/firmware/edid
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cp /tmp/cpio/lib/firmware/edid/edid.bin /storage/.config/firmware/edid
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# create cpio archive
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cd /tmp/cpio/
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find . -print | cpio -ov -H newc > /storage/edid.cpio
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}
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intel_amd() {
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# check which output is connnected:
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counter=0
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for i in /sys/class/drm/*; do
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if [ "$(cat "$i"/status 2>/dev/null)" = "connected" ]; then
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counter=$((counter + 1))
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if [ $counter -gt 0 -a $counter -lt 2 ]; then
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card="$(echo "$i" | cut -d / -f 5)"
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hdmi="$(echo "$i" | cut -d / -f 5 | sed 's/card[0-9]-//g')"
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else
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echo "More than a single device connected. Probably enable \"Disable all other monitors\" at Kodi settings. Aborting!"
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exit 7
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fi
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fi
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done
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# create the edid
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create_edid
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# check extlinux.conf and syslinux.cfg
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check_file
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check_content
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# remount /flash to rw
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mount_rw
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mv /storage/edid.cpio /flash
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# make a backup of $file
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cp "$file" "$file".old
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# add boot parameters to $file
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sed -i "/ APPEND/s/$/ initrd=\/edid.cpio drm.edid_firmware=edid\/edid.bin video=$hdmi:D/" "$file"
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# reboot
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sys_reboot
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}
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nvidia() {
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# check if xorg.conf already exists
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if [ -f /storage/.config/xorg.conf -o -f /storage/.config/xorg-nvidia.conf ]; then
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echo "Existing /storage/.config/xorg.conf detected. Aborting!"
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exit 6
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fi
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# check for multi-montior setup
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monitors="$(grep -i -w "connected" /var/log/Xorg.0.log | grep -i -o "dfp-[0-9]" | sort -u | wc -l)"
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if [ "$monitors" -gt "1" ]; then
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echo "You have more than a single monitor connected. The script doesn't support a multi-monitor setup. Aborting!"
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exit 7
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fi
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# set debug and restart Xorg
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cp /etc/X11/xorg-nvidia.conf /storage/.config/xorg.conf
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sed -i 's/"ModeDebug" "false"/"ModeDebug" "true"/g' /storage/.config/xorg.conf
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systemctl restart xorg.service
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# get port
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nv_port="$(grep -i -w connected /var/log/Xorg.0.log | grep -i -o "dfp-[0-9]" | sort -u)"
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nvidia-xconfig --extract-edids-from-file=/var/log/Xorg.0.log --extract-edids-output-file=/storage/.config/edid.bin 1>/dev/null
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# set mode debug back to false
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sed -i 's/"ModeDebug" "true"/"ModeDebug" "false"/g' /storage/.config/xorg.conf
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# set port and uncomment lines
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sed -i "s/# Option \"ConnectedMonitor\" \"DFP-0\"/ Option \"ConnectedMonitor\" \"$nv_port\"/g" /storage/.config/xorg.conf
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sed -i "s/# Option \"CustomEDID\" \"DFP-0:\/storage\/.config\/edid.bin\"/ Option \"CustomEDID\" \"$nv_port:\/storage\/.config\/edid.bin\"/g" /storage/.config/xorg.conf
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sed -i "s/# Option \"IgnoreEDID\" \"false\"/ Option \"IgnoreEDID\" \"false\"/g" /storage/.config/xorg.conf
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sed -i "s/# Option \"UseEDID\" \"true\"/ Option \"UseEDID\" \"true\"/g" /storage/.config/xorg.conf
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# restart xorg.service
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systemctl restart xorg.service
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}
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# start script from here
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case "$1" in
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'create')
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check_gpu
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run
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;;
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'gpu')
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check_gpu
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echo "$gpu"
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;;
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'delete')
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check_gpu
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del_edid
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;;
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'help')
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help
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;;
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*)
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echo "Usage $0 { create | gpu | delete | help }"
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;;
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esac
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