Merge pull request #49 from contactless/feature/bootrestore_wb6_usb

image: wb6: add script to restore bootloader over USB

image/bootrestore_usb_wb6.sh

@@ -0,0 +1,56 @@
+#!/bin/bash
+
+UBOOT=$1
+
+if [[ ! -e $UBOOT ]]; then
+    echo "Usage: $0 <u-boot>" >&2
+    exit 1
+fi
+UBOOT=`readlink -f $UBOOT`
+
+# check that this u-boot supports automatic bootrestore
+if ! grep 'bootrestore' $UBOOT 2>&1 >/dev/null; then
+    echo "It looks like this U-boot image doesn't support automatic boot restore. Try a newer one." >&2
+    exit 1
+fi
+
+UBOOT_SIZE=`du -b $UBOOT | awk '{printf "0x%x",$1}'`
+echo "U-boot size is $UBOOT_SIZE" >&2
+
+
+
+TMPDIR=`mktemp -d`
+CONFIG=$TMPDIR/imx6ull_work.conf
+UBOOT_COPY=$TMPDIR/uboot.imx
+cp $UBOOT $UBOOT_COPY
+
+cleanup() {
+    rm $TMPDIR -rf
+}
+trap cleanup EXIT
+
+cat > $CONFIG <<EOF
+mx6_qsb
+hid,1024,0x910000,0x10000000,1G,0x00900000,0x40000
+${UBOOT}:dcd
+:write,0x82fffffc,0xdead0003
+:write,0x82fffff8,${UBOOT_SIZE}
+:write,0x82fffff4,0x82000000
+${UBOOT_COPY}:load 0x82000000
+${UBOOT}:clear_dcd,load,plug,jump header 
+EOF
+
+CONFIG_MAIN=$TMPDIR/imx_usb.conf
+cat > $CONFIG_MAIN <<EOF
+#vid:pid, config_file
+0x15a2:0x0080, imx6ull_work.conf
+EOF
+
+
+[[ -z $IMX_USB ]] && IMX_USB=`which imx_usb`
+if [[ ! -e $IMX_USB ]]; then
+    echo "Can't find imx_usb tool. Please put it into PATH or set IMX_USB" >&2
+    exit 1
+fi
+cat $CONFIG
+$IMX_USB -c $TMPDIR