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#!/bin/bash -eux
# Copyright 2014 The Chromium OS Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
me=${0##*/}
TMP="$me.tmp"
# Work in scratch directory
cd "$OUTDIR"
IN="${SCRIPT_DIR}/futility/data/bios_link_mp.bin"
BIOS="${TMP}.bios.bin"
cp "${IN}" "${BIOS}"
AREAS=(RW_SECTION_A VBLOCK_B BOOT_STUB)
set -x
# Extract good blobs first
"${FUTILITY}" dump_fmap -x "${BIOS}" "${AREAS[@]}"
# Save the good blobs, make same-size random blobs, create command
CMDS=( )
for a in "${AREAS[@]}"; do
size=$(stat -c '%s' "$a")
mv "$a" "$a.good"
dd if=/dev/urandom of="$a.rand" bs="$size" count=1
CMDS+=("$a:$a.rand")
done
# Poke the new blobs in
"${FUTILITY}" load_fmap "${BIOS}" "${CMDS[@]}"
# Pull them back out and see if they match
"${FUTILITY}" dump_fmap -x "${BIOS}" "${AREAS[@]}"
for a in "${AREAS[@]}"; do
cmp "$a" "$a.rand"
done
# cleanup
rm -f "${TMP}"* "${AREAS[@]}" ./*.rand ./*.good
exit 0
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