x86: add bootloader upgrade on sysupgrade

[openwrt/staging/ynezz.git] / target / linux / x86 / base-files / lib / upgrade / platform.sh

diff --git a/target/linux/x86/base-files/lib/upgrade/platform.sh b/target/linux/x86/base-files/lib/upgrade/platform.sh
index 3b6c25877fc9daf2bedba33c27a0a510aebae167..8be96dfcd45f7a85e11683c1d4a218e1c4680719 100644 (file)
--- a/target/linux/x86/base-files/lib/upgrade/platform.sh
+++ b/target/linux/x86/base-files/lib/upgrade/platform.sh
@@ -1,3 +1,5 @@
+RAMFS_COPY_BIN='grub-bios-setup'
+
 platform_check_image() {
        local diskdev partdev diff
        [ "$#" -gt 1 ] && return 1
@@ -44,6 +46,26 @@ platform_copy_config() {
        fi
 }
 
+platform_do_bootloader_upgrade() {
+       local bootpart
+       local diskdev="$1"
+
+       if export_partdevice bootpart 1; then
+               mkdir -p /tmp/boot
+               mount -o rw,noatime "/dev/$bootpart" /tmp/boot
+               echo "(hd0) /dev/$diskdev" > /tmp/device.map
+
+               echo "Upgrading bootloader on /dev/$diskdev..."
+               grub-bios-setup \
+                       -m "/tmp/device.map" \
+                       -d "/tmp/boot/boot/grub" \
+                       -r "hd0,msdos1" \
+                       "/dev/$diskdev"
+
+               umount /tmp/boot
+       fi
+}
+
 platform_do_upgrade() {
        local diskdev partdev diff
 
@@ -92,4 +114,6 @@ platform_do_upgrade() {
        #copy partition uuid
        echo "Writing new UUID to /dev/$diskdev..."
        get_image "$@" | dd of="/dev/$diskdev" bs=1 skip=440 count=4 seek=440 conv=fsync
+
+       platform_do_bootloader_upgrade "$diskdev"
 }