WIP: initrd: report EC version (not tested)

Signed-off-by: Maciej Pijanowski <maciej.pijanowski@3mdeb.com>

Author: macpijan

initrd/bin/oem-system-info-xx30

@@ -51,4 +51,4 @@ kernel=$(uname -s -r)
 FB_OPTIONS=""
 if whiptail --version | grep "fbwhiptail"; then FB_OPTIONS="--text-size 12"; fi
 whiptail_type $BG_COLOR_MAIN_MENU $FB_OPTIONS --title 'System Info' \
-	--msgbox "${BOARD_NAME}\nFW_VER: ${FW_VER}\nKernel: ${kernel}\nCPU: ${cpustr}  RAM: ${memtotal} GB $battery_status\n$(fdisk -l | grep -e '/dev/sd.:' -e '/dev/nvme.*:' | sed 's/B,.*/B/')\n\n$(cat /tmp/devices_usb_pci)" 0 80
+	--msgbox "${BOARD_NAME}\nFW_VER: ${FW_VER}$([ -n "$EC_VER" ] && echo "\nEC_VER: ${EC_VER}")\nKernel: ${kernel}\nCPU: ${cpustr}  RAM: ${memtotal} GB $battery_status\n$(fdisk -l | grep -e '/dev/sd.:' -e '/dev/nvme.*:' | sed 's/B,.*/B/')\n\n$(cat /tmp/devices_usb_pci)" 0 80

initrd/etc/functions

@@ -102,6 +102,14 @@ fw_version() {
 	echo "${FW_VER::-10}"
 }
 
+ec_version() {
+	# EC firmware version from DMI type 11 OEM Strings (if present).
+	# The raw sysfs entry has a 5-byte header followed by null-terminated strings.
+	local raw="/sys/firmware/dmi/entries/11-0/raw"
+	[ -f "$raw" ] || return
+	tail -c +6 "$raw" | tr '\0' '\n' | sed -n 's/^EC firmware version: *//p'
+}
+
 preserve_rom() {
 	TRACE_FUNC
 	new_rom="$1"

initrd/etc/gui_functions

@@ -172,9 +172,13 @@ show_system_info() {
 	cpustr=$(cat /proc/cpuinfo | grep 'model name' | uniq | sed -r 's/\(R\)//;s/\(TM\)//;s/CPU //;s/model name.*: //')
 	kernel=$(uname -s -r)
 
+	local ec_ver_line=""
+	[ -n "$EC_VER" ] && ec_ver_line="
+	EC_VER: ${EC_VER}"
+
 	local msgbox="${BOARD_NAME}
 
-	FW_VER: ${FW_VER}
+	FW_VER: ${FW_VER}${ec_ver_line}
 	Kernel: ${kernel}
 
 	CPU: ${cpustr}

initrd/init

@@ -222,6 +222,7 @@ fi
 
 # export firmware version
 export FW_VER=$(fw_version)
+export EC_VER=$(ec_version)
 
 # Add our boot devices into the /etc/fstab, if they are defined
 # in the configuration file.