wolfBoot/tools/scripts/prepare_update_l5.sh

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#!/bin/bash
SIGN_TOOL="python3 ./tools/keytools/sign.py"
if [ -f "./tools/keytools/sign" ]; then
SIGN_TOOL="./tools/keytools/sign"
fi
# SIZE is WOLFBOOT_PARTITION_SIZE - 5
SIZE=129019
VERSION=8
APP=test-app/image_v"$VERSION"_signed.bin
$SIGN_TOOL --sha256 --ecc256 test-app/image.bin wolfboot_signing_private_key.der $VERSION
dd if=/dev/zero bs=$SIZE count=1 2>/dev/null | tr "\000" "\377" > update.bin
dd if=$APP of=update.bin bs=1 conv=notrunc
printf "pBOOT" >> update.bin