meta-quanta: gbs: inband bmc/bios image update
gbs-bmc-update and gbs-bios-update packages do
inband bmc/bios image update via Nuvoton PCI mailbox
Tested:
Set PCI mailbox memory space as writable
~# sudo setpci -d 1050:0750 04.B=02
bmc update:
~# sudo burn_my_bmc --command update --interface ipmipci
--image image-bmc --sig image-bmc.sig --type image
bios update:
~# sudo burn_my_bmc --command update --interface ipmipci
--image image-bios --sig image-bios.sig --type bios
Signed-off-by: George Hung <george.hung@quantatw.com>
Change-Id: I69df209d74ae8321b8f50b3cd390eca79a41e902
diff --git a/meta-gbs/recipes-gbs/gbs-bios-update/files/bios-update.sh b/meta-gbs/recipes-gbs/gbs-bios-update/files/bios-update.sh
new file mode 100644
index 0000000..3a215fa
--- /dev/null
+++ b/meta-gbs/recipes-gbs/gbs-bios-update/files/bios-update.sh
@@ -0,0 +1,84 @@
+#!/bin/sh
+# Copyright 2020 Google LLC
+# Copyright 2020 Quanta Computer Inc.
+#
+# 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.
+
+# Global variables
+
+# GPIO to control the host SPI mux
+SPI_SW_SELECT=169
+
+# Kernel control string for bind/unbind
+KERNEL_FIU_ID="c0000000.fiu"
+
+# Kernel sysfs path for bind/unbind
+KERNEL_SYSFS_FIU="/sys/bus/platform/drivers/NPCM-FIU"
+
+IMAGE_FILE="/tmp/image-bios"
+
+# Taken from /run/initramfs/update
+# Given label name, return mtd node. e.g. `findmtd bmc` returns 'mtd0'
+findmtd() {
+ m=$(grep -xl "$1" /sys/class/mtd/*/name)
+ m=${m%/name}
+ m=${m##*/}
+ echo $m
+}
+
+cleanup() {
+ if [ -d "${KERNEL_SYSFS_FIU}/${KERNEL_FIU_ID}" ]; then
+ echo "${KERNEL_FIU_ID}" > "${KERNEL_SYSFS_FIU}"/unbind
+ fi
+ echo low > /sys/class/gpio/gpio${SPI_SW_SELECT}/direction # Switch mux to host
+ rm -f ${IMAGE_FILE}
+}
+trap cleanup EXIT SIGHUP SIGINT SIGTERM
+
+main() {
+ if [ ! -f ${IMAGE_FILE} ]; then
+ echo "Invalid bios image file!"
+ exit 1
+ fi
+
+ echo "Starting bios update..."
+ if [ ! -d "/sys/class/gpio/gpio${SPI_SW_SELECT}" ]; then
+ echo "${SPI_SW_SELECT}" > /sys/class/gpio/export
+ fi
+
+ echo high > /sys/class/gpio/gpio${SPI_SW_SELECT}/direction # Switch mux to BMC
+
+ if [ -d "${KERNEL_SYSFS_FIU}/${KERNEL_FIU_ID}" ]; then
+ echo "${KERNEL_FIU_ID}" > "${KERNEL_SYSFS_FIU}"/unbind
+ fi
+ echo "${KERNEL_FIU_ID}" > "${KERNEL_SYSFS_FIU}"/bind
+
+ # BIOS flash is labelled 'pnor'
+ pnor_mtd=$(findmtd pnor)
+ if [ -z "${pnor_mtd}" ]; then
+ echo "Cannot find bios flash mtd partition!"
+ exit 1
+ fi
+
+ flashcp -v $IMAGE_FILE /dev/"${pnor_mtd}"
+ if [ $? -eq 0 ]; then
+ echo "bios update successfully..."
+ else
+ echo "bios update failed..."
+ exit 1
+ fi
+}
+# Exit without running main() if sourced
+return 0 2>/dev/null
+
+main "$@"