diff --git a/meta-facebook/meta-facebook/meta-tiogapass/recipes-phosphor/flash/phosphor-software-manager/bios-update.sh b/meta-facebook/meta-facebook/meta-tiogapass/recipes-phosphor/flash/phosphor-software-manager/bios-update.sh
new file mode 100755
index 0000000..fd1c52b
--- /dev/null
+++ b/meta-facebook/meta-facebook/meta-tiogapass/recipes-phosphor/flash/phosphor-software-manager/bios-update.sh
@@ -0,0 +1,142 @@
+#!/bin/bash
+
+set -e
+
+POWER_CMD="/usr/sbin/power-util mb"
+IMAGE_FILE=$1/bios.bin
+GPIO=389
+
+IPMB_OBJ="xyz.openbmc_project.Ipmi.Channel.Ipmb"
+IPMB_PATH="/xyz/openbmc_project/Ipmi/Channel/Ipmb"
+IPMB_INTF="org.openbmc.Ipmb"
+IPMB_CALL="sendRequest yyyyay"
+ME_CMD_RECOVER="1 0x2e 0 0xdf 4 0x57 0x01 0x00 0x01"
+ME_CMD_RESET="1 6 0 0x2 0"
+SPI_DEV="1e630000.spi"
+SPI_PATH="/sys/bus/platform/drivers/aspeed-smc"
+
+set_gpio_to_bmc()
+{
+    echo "switch bios GPIO to bmc"
+    if [ ! -d /sys/class/gpio/gpio$GPIO ]; then
+        cd /sys/class/gpio
+        echo $GPIO > export
+        cd gpio$GPIO
+    else
+        cd /sys/class/gpio/gpio$GPIO
+    fi
+    direc=`cat direction`
+    if [ $direc == "in" ]; then
+        echo "out" > direction
+    fi
+    data=`cat value`
+    if [ "$data" == "0" ]; then
+        echo 1 > value
+    fi
+    return 0
+}
+
+set_gpio_to_pch()
+{
+    echo "switch bios GPIO to pch"
+    if [ ! -d /sys/class/gpio/gpio$GPIO ]; then
+        cd /sys/class/gpio
+        echo $GPIO > export
+        cd gpio$GPIO
+    else
+        cd /sys/class/gpio/gpio$GPIO
+    fi
+    direc=`cat direction`
+    if [ $direc == "in" ]; then
+        echo "out" > direction
+    fi
+    data=`cat value`
+    if [ "$data" == "1" ]; then
+        echo 0 > value
+    fi
+    echo "in" > direction
+    echo $GPIO > /sys/class/gpio/unexport
+    return 0
+}
+
+echo "Bios upgrade started at $(date)"
+
+#Power off host server.
+echo "Power off host server"
+$POWER_CMD off
+sleep 15
+if [ $($POWER_CMD status) != "off" ];
+then
+    echo "Host server didn't power off"
+    echo "Bios upgrade failed"
+    exit -1
+fi
+echo "Host server powered off"
+
+#Set ME to recovery mode
+echo "Set ME to recovery mode"
+busctl call $IPMB_OBJ $IPMB_PATH $IPMB_INTF $IPMB_CALL $ME_CMD_RECOVER
+sleep 5
+
+#Flip GPIO to access SPI flash used by host.
+echo "Set GPIO $GPIO to access SPI flash from BMC used by host"
+set_gpio_to_bmc
+
+#Bind spi driver to access flash
+echo "bind aspeed-smc spi driver"
+echo -n $SPI_DEV > $SPI_PATH/bind
+sleep 1
+
+#Flashcp image to device.
+if [ -e "$IMAGE_FILE" ];
+then
+    echo "Bios image is $IMAGE_FILE"
+    for d in mtd6 mtd7 ; do
+        if [ -e "/dev/$d" ]; then
+            mtd=`cat /sys/class/mtd/$d/name`
+            if [ $mtd == "pnor" ]; then
+                echo "Flashing bios image to $d..."
+                flashcp -v $IMAGE_FILE /dev/$d
+                if [ $? -eq 0 ]; then
+                    echo "bios updated successfully..."
+                else
+                    echo "bios update failed..."
+                fi
+                break
+            fi
+            echo "$d is not a pnor device"
+        fi
+        echo "$d not available"
+    done
+else
+    echo "Bios image $IMAGE_FILE doesn't exist"
+fi
+
+#Unbind spi driver
+sleep 1
+echo "Unbind aspeed-smc spi driver"
+echo -n $SPI_DEV > $SPI_PATH/unbind
+sleep 10
+
+#Flip GPIO back for host to access SPI flash
+echo "Set GPIO $GPIO back for host to access SPI flash"
+set_gpio_to_pch
+sleep 5
+
+#Reset ME to boot from new bios
+echo "Reset ME to boot from new bios"
+busctl call $IPMB_OBJ $IPMB_PATH $IPMB_INTF $IPMB_CALL $ME_CMD_RESET
+sleep 10
+
+#Power on server
+echo "Power on server"
+$POWER_CMD on
+sleep 5
+
+# Retry to power on once again if server didn't powered on
+if [ $($POWER_CMD status) != "on" ];
+then
+    sleep 5
+    echo "Powering on server again"
+    $POWER_CMD on
+fi
diff --git a/meta-facebook/meta-facebook/meta-tiogapass/recipes-phosphor/flash/phosphor-software-manager/obmc-flash-host-bios@.service b/meta-facebook/meta-facebook/meta-tiogapass/recipes-phosphor/flash/phosphor-software-manager/obmc-flash-host-bios@.service
new file mode 100644
index 0000000..7e09890
--- /dev/null
+++ b/meta-facebook/meta-facebook/meta-tiogapass/recipes-phosphor/flash/phosphor-software-manager/obmc-flash-host-bios@.service
@@ -0,0 +1,7 @@
+[Unit]
+Description=Flash Host Bios image %I to Host
+
+[Service]
+Type=oneshot
+RemainAfterExit=no
+ExecStart=/usr/sbin/bios-update.sh /tmp/images/%i
diff --git a/meta-facebook/meta-facebook/meta-tiogapass/recipes-phosphor/flash/phosphor-software-manager_%.bbappend b/meta-facebook/meta-facebook/meta-tiogapass/recipes-phosphor/flash/phosphor-software-manager_%.bbappend
new file mode 100644
index 0000000..b2160ac
--- /dev/null
+++ b/meta-facebook/meta-facebook/meta-tiogapass/recipes-phosphor/flash/phosphor-software-manager_%.bbappend
@@ -0,0 +1,10 @@
+FILESEXTRAPATHS_prepend_tiogapass := "${THISDIR}/${PN}:"
+SRC_URI += "file://bios-update.sh"
+
+PACKAGECONFIG_append = " flash_bios"
+RDEPENDS_${PN} += "bash"
+
+do_install_append_tiogapass() {
+    install -d ${D}/${sbindir}
+    install -m 0755 ${WORKDIR}/bios-update.sh ${D}/${sbindir}/
+}