1 files changed, 103 insertions, 0 deletions
diff --git a/recipes/i2c-tools/omap3-writeprom/writeprom.sh b/recipes/i2c-tools/omap3-writeprom/writeprom.sh
new file mode 100755
index 0000000000..d1e2b09dcc
--- /dev/null
+++ b/recipes/i2c-tools/omap3-writeprom/writeprom.sh
@@ -0,0 +1,103 @@
+#!/bin/sh
+
+machine_id() {          # return the machine ID
+    awk 'BEGIN { FS=": " } /Hardware/ { gsub(" ", "_", $2); print tolower($2) } ' </proc/cpuinfo
+}
+
+if [ $# -ne 4 ] && [ $# -ne 6 ];
+then
+	echo "Usage:"
+	echo ""
+	echo "writeprom.sh vendorid deviceid rev fab_rev [envvar envsetting]"
+	echo	
+	echo " vendorid, deviceid - expansion board device number from http://www.elinux.org/BeagleBoardPinMux#Vendor_and_Device_IDs"
+	echo
+	echo " rev          - board revision (e.g. 0x00)"
+	echo " fab_rev      - revision marking from pcb (e.g. R2411)"
+	echo " envvar       - optional u-boot env variable name"
+	echo "                (e.g. dvimode)"
+	echo " envsetting   - optional u-boot env variable setting"
+	echo "                (e.g. 1024x768MR-16@60)"
+	echo
+	echo "Don't forget to make the EEPROM writeable if it has a writeprotect jumper!"
+	exit 1
+fi
+
+fabrevision=$4
+if [ ${#fabrevision} -ge 8 ]; then
+	echo "Error: fab revision string must less than 8 characters"
+	exit 1
+fi
+
+envvar=$5
+if [ ${#envar} -ge 16 ]; then
+	echo "Error: environment variable name string must less than 16 characters"
+	exit 1
+fi
+
+envsetting=$6
+if [ ${#ensetting} -ge 64 ]; then
+	echo "Error: environment setting string must less than 64 characters"
+	exit 1
+fi
+
+case `machine_id` in                                                        
+  "omap3_beagle_board")                                                         
+      bus=2
+      device=0x50
+      ;;
+  *)                                                              
+      bus=3
+      device=0x51
+      ;;                                               
+esac
+
+device=0x50
+vendorid=$1
+if [ ${#vendorid} -ge 6 ]; then
+    echo "Error: vendorid number must be less than 6 digits"
+    exit 1
+fi
+
+i2cset -y $bus $device 0x00 0x00
+i2cset -y $bus $device 0x01 $vendorid
+i2cset -y $bus $device 0x02 0x00
+i2cset -y $bus $device 0x03 $2
+i2cset -y $bus $device 0x04 $3
+i2cset -y $bus $device 0x05 00
+
+let i=6
+hexdumpargs="'${#fabrevision}/1 \"0x%02x \"'"
+command="echo -n \"$fabrevision\" | hexdump -e $hexdumpargs"
+hex=$(eval $command)
+for character in $hex; do
+	i2cset -y $bus $device $i $character
+	let i=$i+1
+done
+i2cset -y $bus $device $i 0x00
+
+if [ $# -eq 5 ]
+then
+	i2cset -y $bus $device 0x05 0x01
+
+	let i=14
+	hexdumpargs="'${#envvar}/1 \"0x%02x \"'"
+	command="echo -n \"$envvar\" | hexdump -e $hexdumpargs"
+	hex=$(eval $command)
+	for character in $hex; do
+		i2cset -y $bus $device $i $character
+		let i=$i+1
+	done
+ 	i2cset -y $bus $device $i 0x00
+
+	let i=30
+	hexdumpargs="'${#envsetting}/1 \"0x%02x \"'"
+	command="echo -n \"$envsetting\" | hexdump -e $hexdumpargs"
+	hex=$(eval $command)
+	for character in $hex; do
+		i2cset -y $bus $device $i $character
+		let i=$i+1
+	done	 
+	i2cset -y $bus $device $i 0x00
+fi
+