From 19b9a12a93a45cc02b31de9b40c45029fbf3c569 Mon Sep 17 00:00:00 2001
From: davidovski <david@davidovski.xyz>
Date: Sun, 20 Mar 2022 00:00:54 +0000
Subject: changed the linux kernel configs

---
 extra/syslinux/update-extlinux | 284 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 284 insertions(+)
 create mode 100644 extra/syslinux/update-extlinux

(limited to 'extra/syslinux/update-extlinux')

diff --git a/extra/syslinux/update-extlinux b/extra/syslinux/update-extlinux
new file mode 100644
index 0000000..4799cd3
--- /dev/null
+++ b/extra/syslinux/update-extlinux
@@ -0,0 +1,284 @@
+#!/bin/sh
+
+version=
+default=0
+timeout=5
+verbose=0
+
+conf=/boot/extlinux.conf
+myconf=/etc/update-extlinux.conf
+
+# read in extlinux settings
+if [ -f "$myconf" ]; then
+	. $myconf
+fi
+
+everbose() {
+	if [ "$verbose" = "0" ]; then
+		return
+	fi
+
+	echo $*
+}
+
+ewarn() {
+	echo "WARNING:" $@ >&2
+}
+
+eerror() {
+	echo "ERROR:" $@ >&2
+	return 1
+}
+
+usage() {
+	echo "usage: $0 [-v|--verbose] [--warn-only]"
+}
+
+while [ $# -gt 0 ]; do
+	opt="$1"
+	shift
+	case "$opt" in
+	-v|--verbose)
+		verbose=1
+		;;
+	--warn-only)
+		warn_only=1
+		;;
+	--)
+		break
+		;;
+	-*)
+		usage
+		exit 1
+		;;
+	esac
+done
+
+everbose "Updating extlinux configuration."
+
+if [ "x$root" = "x" ]; then
+	ewarn "Root device is not specified in $myconf."
+	blkid_export=$(blkid -o export /dev/root)
+	if [ -n "$blkid_export" ]; then
+		export $blkid_export
+	fi
+	if [ -z "$UUID" ]; then
+		# try parse /proc/mount for mounted /
+		dev=$(awk '$2 == "/" {dev=$1} END {print dev}' /proc/mounts)
+		if [ -n "$dev" ]; then
+			blkid_export=$(blkid -o export $dev)
+			if [ -n "$blkid_export" ]; then
+				export "$blkid_export"
+			fi
+		fi
+	fi
+	if [ -z "$UUID" ]; then
+		if [ -z "$dev" ]; then
+			if [ -n "$warn_only" ]; then
+				ewarn "Failed to detect root device. extlinux.conf is not updated"
+				exit 0
+			else
+				eerror "Failed to detect root device"
+				exit 1
+			fi
+		else
+			root=$dev
+		fi
+	else
+		root=UUID=$UUID
+	fi
+	everbose "Root device is: $root"
+fi
+
+rtimeout=$(( ${timeout} * 10 ))
+syslinux_menu=menu.c32
+menu_hidden=
+
+# vesa menu has been requested?
+if [ "$vesa_menu" = "1" ]; then
+	syslinux_menu=vesamenu.c32
+fi
+
+umask 0022
+rm -f $conf.new
+echo "# Generated by update-extlinux $version" > $conf.new
+if [ -n "$serial_port" ]; then
+	echo "SERIAL $serial_port ${serial_baud:-115200}" >> $conf.new
+fi
+echo "DEFAULT $syslinux_menu" >> $conf.new
+echo "PROMPT 0" >> $conf.new
+echo "MENU TITLE XiLinux/$(uname -s) Boot Menu" >> $conf.new
+if [ "$hidden" = "1" ]; then
+	echo "MENU HIDDEN" >> $conf.new
+fi
+echo "MENU AUTOBOOT XiLinux will be booted automatically in # seconds." >> $conf.new
+echo "TIMEOUT $rtimeout" >> $conf.new
+
+lst=0
+if [ -f "/boot/xen.gz" ]; then
+	for kernel in $(find /boot -name "vmlinuz-*" -type f); do
+		tag=$(basename $kernel | cut -b9-)
+		everbose "Found Xen hypervisor: /boot/xen.gz, kernel: $kernel"
+
+		if [ -f "/boot/initramfs-$tag" ]; then
+			everbose "Found initramfs: /boot/initramfs-$tag"
+			initramfs="initramfs-$tag"
+		else
+			initramfs=
+		fi
+		initramfs_stage="${initramfs:+---} $initramfs"
+
+		if [ -f "/boot/amd-ucode.img" ]; then
+			everbose "Found microcode for AMD CPUs: /boot/amd-ucode.img"
+			ucode_image_amd="amd-ucode.img"
+			case "$xen_opts" in
+				*ucode=scan* ) ;;
+				* ) xen_opts="$xen_opts ucode=scan" ;;
+			esac
+		fi
+		if [ -f "/boot/intel-ucode.img" ]; then
+			everbose "Found microcode for Intel CPUs: /boot/intel-ucode.img"
+			ucode_image_intel="intel-ucode.img"
+			case "$xen_opts" in
+				*ucode=scan* ) ;;
+				* ) xen_opts="$xen_opts ucode=scan" ;;
+			esac
+		fi
+		ucode_image_stage="${ucode_image_amd:+---} $ucode_image_amd ${ucode_image_intel:+---} $ucode_image_intel"
+
+		label=xen-$(grep -w -l $tag /usr/share/kernel/*/kernel.release \
+				| cut -d/ -f5)
+		if [ "$label" = "xen-" ]; then
+			label=xen-$lst
+		fi
+
+		dom0_kernel_stage="--- $(basename $kernel) root=$root modules=${modules}${TYPE:+,$TYPE} $default_kernel_opts"
+
+		echo "LABEL $label" >> $conf.new
+		if [ "$label" = "$default" ]; then
+			echo "  MENU DEFAULT" >> $conf.new
+		fi
+		echo "  MENU LABEL Xen + Linux $tag" >> $conf.new
+		echo "  COM32 mboot.c32" >> $conf.new
+		echo "  APPEND xen.gz $xen_opts $dom0_kernel_stage $initramfs_stage $ucode_image_stage" >> $conf.new
+		echo "" >> $conf.new
+		lst=$(($lst + 1))
+	done
+fi
+
+for kernel in $(find /boot -name "vmlinuz*" -type f); do
+	case $kernel in
+	*vmlinuz) tag=vanilla;;
+	*vmlinuz-*)  tag=$(basename $kernel | cut -b9-);;
+	*) continue;;
+	esac
+	everbose "Found kernel: $kernel"
+	label=$(grep -w -l $tag /usr/share/kernel/*/kernel.release | cut -d/ -f5)
+	if [ -z "$label" ]; then
+		if [ "$tag" = vanilla ]; then
+			label="vanilla"
+		else
+			label=$lst
+		fi
+	fi
+	echo "LABEL $label" >> $conf.new
+	if [ "$label" = "$default" ]; then
+		echo "  MENU DEFAULT" >> $conf.new
+	fi
+	echo "  MENU LABEL Linux $tag" >> $conf.new
+	echo "  LINUX $(basename $kernel)" >> $conf.new
+	initrd=
+	if [ -f "/boot/initramfs-$tag" ]; then
+		everbose "Found initramfs: /boot/initramfs-$tag"
+		initrd="initramfs-$tag"
+	fi
+	if [ -f "/boot/amd-ucode.img" ]; then
+		everbose "Found microcode for AMD CPUs: /boot/amd-ucode.img"
+		initrd="amd-ucode.img${initrd:+,}${initrd}"
+	fi
+	if [ -f "/boot/intel-ucode.img" ]; then
+		everbose "Found microcode for Intel CPUs: /boot/intel-ucode.img"
+		initrd="intel-ucode.img${initrd:+,}${initrd}"
+	fi
+	echo "  INITRD ${initrd}" >> $conf.new
+	echo "  APPEND root=$root modules=${modules}${TYPE:+,$TYPE} $default_kernel_opts" >> $conf.new
+	echo "" >> $conf.new
+	lst=$(($lst + 1))
+done
+
+if [ -n "$password" ]; then
+	echo "NOESCAPE 1" >> $conf.new
+	echo "MENU MASTER PASSWD $password" >> $conf.new
+	echo "" >> $conf.new
+	chmod o-r $conf.new
+fi
+
+everbose "$lst entries found."
+
+for entry in /etc/update-extlinux.d/*; do
+	[ -f "$entry" ] && { cat $entry; echo ""; } >> $conf.new
+done
+
+echo "MENU SEPARATOR" >> $conf.new
+echo "" >> $conf.new
+
+if [ -f "/boot/hdt.c32" ]; then
+	everbose "Found Hardware Detection Tool: /boot/hdt.c32"
+	echo "LABEL hdt" >> $conf.new
+	echo "  MENU LABEL Hardware info" >> $conf.new
+	if [ -n "$password" ]; then
+		echo "  MENU PASSWD" >> $conf.new
+	fi
+	echo "  COM32 hdt.c32" >> $conf.new
+	if [ -f "/boot/memtest" ]; then
+		everbose "Found memtest86+: /boot/memtest"
+		echo "  APPEND memtest=memtest" >> $conf.new
+	fi
+	echo "" >> $conf.new
+elif [ -f "/boot/memtest" ]; then
+	everbose "Found memtest86+: /boot/memtest"
+	echo "LABEL memtest" >> $conf.new
+	echo "  MENU LABEL Memtest86+" >> $conf.new
+        echo "  KERNEL memtest" >> $conf.new
+	echo "" >> $conf.new
+fi
+
+for i in reboot poweroff; do
+	[ -f "/boot/$i.c32" ] || continue
+	everbose "Found $i"
+	# make first char capital
+	cap=$( echo $i | awk '{sub(".", substr(toupper($0),1,1), $0); print}' )
+	echo "LABEL $i" >> $conf.new
+	echo "  MENU LABEL $cap" >> $conf.new
+        echo "  COM32 $i.c32" >> $conf.new
+	echo "" >> $conf.new
+done
+
+if cmp -s $conf.new $conf; then
+	everbose "Configuration unchanged."
+	rm $conf.new
+fi
+
+if [ "$overwrite" != "1" ]; then
+	exit 0
+elif [ -f "$conf.new" ]; then
+	# keep a backup just in case
+	if [ -f "$conf" ]; then
+		mv $conf $conf.old
+	fi
+
+	mv $conf.new $conf
+fi
+
+everbose "Installing libutil.c32 libcom32.c32 mboot.c32 menu.c32 vesamenu.c32 to /boot."
+cp /usr/share/syslinux/libutil.c32 \
+	/usr/share/syslinux/libcom32.c32 \
+	/usr/share/syslinux/mboot.c32 \
+	/usr/share/syslinux/menu.c32 \
+	/usr/share/syslinux/vesamenu.c32 \
+	/boot
+
+case "$(findmnt -n -o FSTYPE -T /boot)" in
+ext*) extlinux --update /boot || [ -n "$warn_only" ];;
+esac
+
-- 
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