init-install: Fix grub menuentry gen after poky upgrade

After upgrading to poky pyro, generation of grub2 menuentry in grub2
became broken. Our init-install.sh script, origianlly coming from an old
poky version, was modified in poky
c2e63957d5abaa4bb10507da5ba16f01112d0bf5 to adapt to the fact that
/etc/grub.d/40_custom was not there anymore. We need to do the same,
otherwise the menyentry is not appended to the grub config and the
installed image won't boot correctly.

recipes-core/initrdscripts/files/init-install.sh

@@ -184,21 +184,18 @@ password $BOOTUSER $BOOTPASSWD
 EOF
 fi
 
-if [ -f /etc/grub.d/40_custom ] ; then
+if [ -f /etc/grub.d/00_header ] ; then
     echo "Preparing custom grub2 menu..."
 
-    cat /etc/grub.d/40_custom >> $GRUBCFG
+    cat >>$GRUBCFG << EOF
+menuentry "Linux" {
+    set root=(hd0,1)
+    linux /vmlinuz root=$rootfs $rootwait ro $kernel_cmdline_console $kernel_cmdline_video_mode $kernel_cmdline_vga_mode net.ifnames=0 panic=60 quiet
+}
+EOF
     if [ -n "${BOOTPASSWD}" ] && [ -n "${BOOTUSER}" ]; then
         sed -i "s/\(menuentry\)\(.*\)\({\)/\1\2--unrestricted \3/g" $GRUBCFG
     fi
-    sed -i "s@__ROOTFS__@$rootfs $rootwait@g" $GRUBCFG
-    sed -i "s/__VIDEO_MODE__/$kernel_cmdline_video_mode/g" $GRUBCFG
-    sed -i "s/__VGA_MODE__/$kernel_cmdline_vga_mode/g" $GRUBCFG
-    sed -i "s/__CONSOLE__/$kernel_cmdline_console/g" $GRUBCFG
-    sed -i "s/quiet/net.ifnames=0 panic=60 quiet/g" $GRUBCFG
-    sed -i "s/rw/ro/g" $GRUBCFG
-    sed -i "/#/d" $GRUBCFG
-    sed -i "/exec tail/d" $GRUBCFG
     chmod 0444 $GRUBCFG
 fi
 

recipes-core/initrdscripts/initramfs-live-install_sysmocom.inc

@@ -1,6 +1,6 @@
 SYSMOCOM := "${@os.path.dirname(d.getVar('FILE', True))}"
 FILESEXTRAPATHS_prepend := "${SYSMOCOM}/files:"
 
-PRINC = "4"
+PRINC = "5"
 
 RDEPENDS_${PN} += "e2fsprogs-e2fsck e2fsprogs-resize2fs"