clearfog: a script for updating U-Boot in place
This thing obviously needs the u-boot-spl.kwb to be available in the
rootfs, so now that it's done, stop pushing it via the CI.
Change-Id: I59f990941f245f938295a198e47e9427f671e637
diff --git a/board/czechlight/clearfog/overlay/usr/bin/reflash-uboot b/board/czechlight/clearfog/overlay/usr/bin/reflash-uboot
new file mode 100755
index 0000000..f91904d
--- /dev/null
+++ b/board/czechlight/clearfog/overlay/usr/bin/reflash-uboot
@@ -0,0 +1,17 @@
+#!/bin/bash
+
+set -ex
+
+if [[ "$1" != "--yes-this-is-dangerous" ]]; then
+ echo "Refusing to continue, re-run with the --yes-this-is-dangerous option to proceed"
+ exit 1
+fi
+
+echo 0 > /sys/block/mmcblk0boot0/force_ro
+echo 0 > /sys/block/mmcblk0boot1/force_ro
+ddrescue --force /usr/libexec/u-boot-spl.kwb /dev/mmcblk0boot0
+ddrescue --force /usr/libexec/u-boot-spl.kwb /dev/mmcblk0boot1
+dd if=/usr/libexec/u-boot-spl.kwb of=/dev/mmcblk0 bs=512 seek=1
+sync
+echo 1 > /sys/block/mmcblk0boot1/force_ro
+echo 1 > /sys/block/mmcblk0boot0/force_ro