From: Luis R. Rodriguez <mcgrof@do-not-panic.com>
Date: Wed, 10 Apr 2013 11:35:28 +0000 (-0700)
Subject: backports: add update-initramfs support
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=70fd5f3ab3332f1544fabec293fce2c9abe8fa64;p=openwrt%2Fstaging%2Fblogic.git

backports: add update-initramfs support

You'll need to update your initramfs for for a few modules.
This is very distribution specific.

Signed-off-by: Luis R. Rodriguez <mcgrof@do-not-panic.com>
[fix script argument]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
---

diff --git a/backport/Makefile.real b/backport/Makefile.real
index e477ad12e6bc..0040ec7ccb03 100644
--- a/backport/Makefile.real
+++ b/backport/Makefile.real
@@ -92,6 +92,7 @@ install: modules
 	@./scripts/check_depmod.sh
 	@./scripts/backport_firmware_install.sh
 	@/sbin/depmod -a
+	@./scripts/update-initramfs.sh $(KLIB)
 	@echo
 	@echo Your backported driver modules should be installed now.
 	@echo Reboot.
diff --git a/backport/scripts/update-initramfs.sh b/backport/scripts/update-initramfs.sh
new file mode 100755
index 000000000000..dcc1dc378395
--- /dev/null
+++ b/backport/scripts/update-initramfs.sh
@@ -0,0 +1,62 @@
+#!/bin/bash
+# Copyright 2009-2013        Luis R. Rodriguez <mcgrof@do-not-panic.com>
+#
+# Since we provide ssb, ethernet modules and most importantly
+# DRM drivers, people may want to update the initramfs image
+# of their distribution. This can also help people who may
+# want to wireless-boot their systems.
+
+KLIB="$1"
+ver=$(echo $KLIB | awk -F "/lib/modules/" '{print $2}' | awk -F"/" '{print $1}')
+dir=/boot/
+
+LSB_RED_ID=$(/usr/bin/lsb_release -i -s &> /dev/null)
+
+if [[ -z $LSB_RED_ID && -f "/etc/os-release" ]]; then
+	# Let's try with os-release. Fedora doesn't have
+	# lsb_release anymore.
+	LSB_RED_ID=$(sed -n '/^NAME/ s/^NAME=\(.*\)$/\1/p' /etc/os-release)
+fi
+
+case $LSB_RED_ID in
+"Ubuntu")
+	echo "Updating ${LSB_RED_ID}'s initramfs for $ver under $dir ..."
+	mkinitramfs -o $dir/initrd.img-$ver $ver
+	echo "Will now run update-grub to ensure grub will find the new initramfs ..."
+	update-grub
+	;;
+"Debian")
+	echo "Updating ${LSB_RED_ID}'s initramfs for $ver under $dir ..."
+	mkinitramfs -o $dir/initrd.img-$ver $ver
+	echo "Will now run update-grub to ensure grub will find the new initramfs ..."
+	update-grub
+	;;
+"Fedora")
+	# This adds a -compat-drivers suffixed initramfs with a new grub2
+	# entry to not override distribution's default stuff.
+	INITRAMFS=${dir}initramfs-$ver-compat-drivers.img
+	KERNEL=${dir}vmlinuz-$ver
+	GRUB_TITLE="Fedora ($ver) with compat-drivers"
+
+	echo "Updating ${LSB_RED_ID}'s initramfs for $ver under $dir ..."
+	mkinitrd --force $INITRAMFS $ver
+
+	# If a previous compat-drivers entry for the same kernel exists
+	# do not add it again.
+	grep -q "${GRUB_TITLE}" /etc/grub2.cfg &> /dev/null
+	if [[ "$?" == "1" ]]; then
+		echo "Will now run grubby to add a new kernel entry ..."
+		# Add a new kernel entry
+		grubby --grub2 --copy-default --add-kernel="$KERNEL" --initrd="$INITRAMFS" --title="$GRUB_TITLE"
+	fi
+	;;
+*)
+	echo "Warning:"
+	echo "You may or may not need to update your initramfs, you should if"
+	echo "any of the modules installed are part of your initramfs. To add"
+	echo "support for your distribution to do this automatically send a"
+	echo "patch against $0. If your distribution does not require this"
+	echo "send a patch against the '/usr/bin/lsb_release -i -s': $LSB_RED_ID"
+	echo "tag for your distribution to avoid this warning."
+        ;;
+esac