ramips: force ZyXEL NR7101 to boot from "Kernel" partition

Make sure BootingFlag points to the system partition we install to.

The BootingFlag variable selects which system partition the system
boots from (0 => "Kernel", 1 => "Kernel2"). OpenWrt does not yet have
device specific support for this dual image scheme, and can therefore
only boot from "Kernel".

This has not been an issue until now, since all known OEM firmware
versions have ignored "Kernel2" - leaving the BootingFlag fixed at 0.
But the newest OEM firmware has a new upgrade procedure, installing
to the "inactive" system partition and setting BootingFlag accordingly.

This workaround is needed until the dual image scheme is fully
supported.

Signed-off-by: Bjørn Mork <bjorn@mork.no>

diff --git a/target/linux/ramips/mt7621/base-files/lib/upgrade/platform.sh b/target/linux/ramips/mt7621/base-files/lib/upgrade/platform.sh
index 9d5e7576ecd8dd88c3438a98eddca00c0c6fe064..8055396b855cac22a986c4b900a48bf82ee4a867 100755 (executable)
--- a/target/linux/ramips/mt7621/base-files/lib/upgrade/platform.sh
+++ b/target/linux/ramips/mt7621/base-files/lib/upgrade/platform.sh
@@ -114,6 +114,7 @@ platform_do_upgrade() {
        zyxel,nr7101)
                fw_setenv CheckBypass 0
                fw_setenv Image1Stable 0
+               [ "$(fw_printenv -n BootingFlag)" = "0" ] || fw_setenv BootingFlag 0
                CI_KERNPART="Kernel"
                nand_do_upgrade "$1"
                ;;