meta-ibm: system1: Add bios version package

This commit includes changes to update the bios version flashed in x86
PCH SPI flash. The version is updated in the dbus as well and cached for
later use to avoid reading SPI flash subsequently. This service is
started after "xyz.openbmc_project.Software.Version.service", typically
during boot or when flashing a host firmware via BMC to update version
information.

Tested By:
Built openbmc, and verified that the service is installed on the bmc.
The host firmware version is updated on the dbus [1] and updated in the
`/var/cache/bios_version` file, when PCH is in standby.

[1] busctl get-property xyz.openbmc_project.Software.BMC.Updater /xyz/openbmc_project/software/bios_active xyz.openbmc_project.Software.Version Version

Change-Id: Ic7b4bb1250b8f1b8fc62fc7fd46654375937a459
Signed-off-by: Asmitha Karunanithi <asmitk01@in.ibm.com>

4 files changed, 97 insertions, 0 deletions

diff --git a/meta-ibm/meta-system1/recipes-phosphor/flash/bios-version.bb b/meta-ibm/meta-system1/recipes-phosphor/flash/bios-version.bb
new file mode 100644
index 0000000000..99336c4819
--- /dev/null
+++ b/meta-ibm/meta-system1/recipes-phosphor/flash/bios-version.bb
@@ -0,0 +1,26 @@
+SUMMARY = "YAML configuration for IBM System1"
+PR = "r1"
+LICENSE = "Apache-2.0"
+LIC_FILES_CHKSUM = "file://${COREBASE}/meta/files/common-licenses/Apache-2.0;md5=89aea4e17d99a7cacdbeed46a0096b10"
+
+inherit systemd
+
+RDEPENDS:${PN} += "bash flashrom"
+
+SRC_URI += " \
+    file://bios-version.sh \
+    file://bios-version.service \
+    "
+
+do_install:append() {
+    install -d ${D}/${sbindir}
+    install -m 0755 ${WORKDIR}/bios-version.sh ${D}/${sbindir}/
+
+    install -d ${D}${systemd_system_unitdir}
+    install -m 0644 ${WORKDIR}/bios-version.service ${D}${systemd_system_unitdir}/
+}
+
+SYSTEMD_SERVICE:${PN} += "bios-version.service"
+
+FILES:${PN} += "${systemd_system_unitdir}/bios-version.service ${sbindir}/bios-version.sh"
+
diff --git a/meta-ibm/meta-system1/recipes-phosphor/flash/bios-version/bios-version.service b/meta-ibm/meta-system1/recipes-phosphor/flash/bios-version/bios-version.service
new file mode 100644
index 0000000000..edcb861c56
--- /dev/null
+++ b/meta-ibm/meta-system1/recipes-phosphor/flash/bios-version/bios-version.service
@@ -0,0 +1,12 @@
+[Unit]
+Description=Update current Host FW version
+After=xyz.openbmc_project.Software.Version.service
+Wants=xyz.openbmc_project.Software.Version.service
+
+[Service]
+Type=oneshot
+RemainAfterExit=no
+ExecStart=/bin/bash /usr/sbin/bios-version.sh
+
+[Install]
+WantedBy=multi-user.target
diff --git a/meta-ibm/meta-system1/recipes-phosphor/flash/bios-version/bios-version.sh b/meta-ibm/meta-system1/recipes-phosphor/flash/bios-version/bios-version.sh
new file mode 100644
index 0000000000..16b0dd51e6
--- /dev/null
+++ b/meta-ibm/meta-system1/recipes-phosphor/flash/bios-version/bios-version.sh
@@ -0,0 +1,58 @@
+#!/bin/bash
+set -e
+
+# Find the GPIO pin associated with "pch-ready"
+GPIO_PIN=$(gpiofind "pch-ready")
+
+if [ -z "${GPIO_PIN}" ]; then
+    echo "gpio 'pch-ready' not found in device tree. Exiting."
+    exit 0
+fi
+
+# Read the value of the GPIO pin
+GPIO_CHIP=$(echo "$GPIO_PIN" | cut -d' ' -f1) # Extract gpiochip
+GPIO_LINE=$(echo "$GPIO_PIN" | cut -d' ' -f2) # Extract line offset
+GPIO_VALUE=$(gpioget "$GPIO_CHIP" "$GPIO_LINE")
+
+if [ "${GPIO_VALUE}" != "0" ]; then
+    echo "PCH is not on standby. Exiting host firmware version read."
+    exit 0
+fi
+
+# Fetch the MTD device number for the specified espi flash device
+DEVICE_NAME="espi-flash-mafs"
+MTD_DEVICE_NUMBER=$(grep "$DEVICE_NAME" /proc/mtd | awk -F: '{print $1}' | awk -F'mtd' '{print $2}')
+
+if [ -n "$MTD_DEVICE_NUMBER" ]; then
+    echo "Found MTD device number: $MTD_DEVICE_NUMBER"
+else
+    echo "Error: MTD device with name '$DEVICE_NAME' not found!"
+    exit 0
+fi
+
+BIOS_FILE="$(mktemp)"
+flashrom -p linux_mtd:dev="${MTD_DEVICE_NUMBER}" --ifd -i bios -r "${BIOS_FILE}"
+
+bios_version=$(strings "${BIOS_FILE}" | grep COREBOOT_EXTR | head -n 1 | awk '{ print $3}' | sed 's/"//g' | sed 's/^-\(.*\)/\1/')
+
+if [ "${bios_version}" == "" ] ; then
+  bios_version=$(strings "${BIOS_FILE}" | grep COREBOOT_VERS | head -n 1 | awk '{ print $3}' | sed 's/"//g' | sed 's/^-\(.*\)/\1/')
+fi
+
+# Clean up the temporary BIOS file
+rm "${BIOS_FILE}"
+
+# If BIOS version is found, cache it and update the BMC property
+if [ "${bios_version}" != "" ] ; then
+  if [ -f /var/cache/bios_version ] ; then
+    rm /var/cache/bios_version
+  fi
+
+  echo "coreboot-${bios_version}" > /var/cache/bios_version
+fi
+
+if [ -f /var/cache/bios_version ] ; then
+  busctl set-property xyz.openbmc_project.Software.BMC.Updater \
+      /xyz/openbmc_project/software/bios_active \
+      xyz.openbmc_project.Software.Version Version s "$(cat /var/cache/bios_version)"
+fi
diff --git a/meta-ibm/meta-system1/recipes-phosphor/flash/phosphor-software-manager_%.bbappend b/meta-ibm/meta-system1/recipes-phosphor/flash/phosphor-software-manager_%.bbappend
new file mode 100644
index 0000000000..226181ac4e
--- /dev/null
+++ b/meta-ibm/meta-system1/recipes-phosphor/flash/phosphor-software-manager_%.bbappend
@@ -0,0 +1 @@
+RDEPENDS:${PN} += "bash flashrom bios-version"