Add some simple scripts for signing/flashing
These are some simple scripts for signing images (with an example with a
hardcoded path), a fixed root key that matches the one checked into the
code, and a few scripts to use the Segger debugger to flash the images.
diff --git a/sign.sh b/sign.sh
new file mode 100755
index 0000000..269032d
--- /dev/null
+++ b/sign.sh
@@ -0,0 +1,20 @@
+#! /bin/sh
+
+source $(dirname $0)/target.sh
+
+./scripts/zep2newt.py \
+ --bin ../zephyr/samples/shell/outdir/$BOARD/zephyr.bin \
+ --key root.pem \
+ --sig RSA \
+ --out shell.signed.bin \
+ --vtoff 0x200 \
+ --word-size 8 \
+ --bit --pad 0x20000
+
+./scripts/zep2newt.py \
+ --bin ../zephyr/samples/hello_world/outdir/$BOARD/zephyr.bin \
+ --key root.pem \
+ --sig RSA \
+ --vtoff 0x200 \
+ --word-size 8 \
+ --out hello.signed.bin