meta-google: gbmc-bridge: add gbmc reboot hook

This adds a reboot right after the powercycle hook.

Change-Id: I38652116d353ed20771c3465a305c3b654281c45
Signed-off-by: Yuxiao Zhang <yuxiaozhang@google.com>
diff --git a/meta-google/recipes-google/networking/gbmc-bridge.bb b/meta-google/recipes-google/networking/gbmc-bridge.bb
index 44d0ff0..95c3737 100644
--- a/meta-google/recipes-google/networking/gbmc-bridge.bb
+++ b/meta-google/recipes-google/networking/gbmc-bridge.bb
@@ -26,6 +26,7 @@
   file://gbmc-br-nft.sh \
   file://gbmc-br-dhcp.sh \
   file://50-gbmc-psu-hardreset.sh.in \
+  file://51-gbmc-reboot.sh \
   file://gbmc-br-dhcp.service \
   file://gbmc-br-dhcp-term.sh \
   file://gbmc-br-dhcp-term.service \
@@ -154,6 +155,7 @@
 
   sed 's,@COORDINATED_POWERCYCLE@,${GBMC_COORDINATED_POWERCYCLE},' ${WORKDIR}/50-gbmc-psu-hardreset.sh.in >${WORKDIR}/50-gbmc-psu-hardreset.sh
   install -m0644 ${WORKDIR}/50-gbmc-psu-hardreset.sh ${D}${datadir}/gbmc-br-dhcp/
+  install -m0644 ${WORKDIR}/51-gbmc-reboot.sh ${D}${datadir}/gbmc-br-dhcp/
 
   install -m0644 ${WORKDIR}/gbmc-br-lib.sh ${D}${datadir}/
   install -m0644 ${WORKDIR}/gbmc-ip-from-ra.sh ${D}${datadir}/
diff --git a/meta-google/recipes-google/networking/gbmc-bridge/51-gbmc-reboot.sh b/meta-google/recipes-google/networking/gbmc-bridge/51-gbmc-reboot.sh
new file mode 100644
index 0000000..41dd883
--- /dev/null
+++ b/meta-google/recipes-google/networking/gbmc-bridge/51-gbmc-reboot.sh
@@ -0,0 +1,35 @@
+#!/bin/bash
+# Copyright 2024 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+[ -n "${gbmc_reboot-}" ] && return
+
+gbmc_reboot_needed=
+
+gbmc_reboot_hook() {
+  # We don't always need a warm reset, allow skipping
+  if [ -z "${gbmc_reboot_needed-}" ]; then
+    echo "Skipping bmc reboot" >&2
+    return 0
+  fi
+
+  update-dhcp-status 'ONGOING' "triggerring bmc reboot"
+
+  reboot -f
+  exit 0
+}
+
+GBMC_BR_DHCP_HOOKS+=(gbmc_reboot_hook)
+
+gbmc_reboot=1