From 8fbdc10ebad1b14794aba593025338f017261972 Mon Sep 17 00:00:00 2001
From: Rajesh Chenna <rchenna@chromium.org>
Date: Tue, 14 Jun 2011 16:17:34 -0700
Subject: Firmware generate script for boot scenarios.

BUG=16488
TEST=Manual. Run firmware_boot.sh <BIOS name without .fd extension>

Change-Id: Iff4751803782d0f65bf4469e845100d40ae9cb6c
Reviewed-on: http://gerrit.chromium.org/gerrit/2618
Tested-by: Rajesh Chenna <rchenna@chromium.org>
Reviewed-by: Rajesh Chenna <rchenna@chromium.org>
---
 scripts/image_signing/firmware_boot.sh | 101 +++++++++++++++++++++++++++++++++
 1 file changed, 101 insertions(+)
 create mode 100755 scripts/image_signing/firmware_boot.sh

diff --git a/scripts/image_signing/firmware_boot.sh b/scripts/image_signing/firmware_boot.sh
new file mode 100755
index 00000000..404a7ba1
--- /dev/null
+++ b/scripts/image_signing/firmware_boot.sh
@@ -0,0 +1,101 @@
+#!/bin/bash -eux
+
+# Copyright (c) 2010 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.
+
+# Refer to the Google Chrome OS Main Processor Firmware Specification for what
+# the pieces are.
+# This script generates different firmware binaries with different
+# configurations.
+
+# Syntax: ./firmware_boot.sh <Firmware name without .fd extension>.
+# Usage of the script.
+usage()
+{
+  cat <<EOF
+  $0 firmware_name
+  firmware_name - name of the firmware.
+EOF
+}
+
+if [ $# != 1 ]; then
+  usage
+  exit 0
+fi
+
+base=$1
+input=${base}.fd
+
+if [ ! -f $input ]; then
+  echo "$input file does not exists."
+  exit 0
+fi
+
+# First, run dump_fmap $input | ./x to compute these values:
+
+# dev-mode BIOS is in firmware A
+rw_a_offset=$(dump_fmap -p ${input} | grep 'RW_SECTION_A' | cut -d' ' -f2)
+rw_a_size=$(dump_fmap -p ${input} | grep 'RW_SECTION_A' | cut -d' ' -f3)
+
+# normal-mode BIOS is in firmware B
+rw_b_offset=$(dump_fmap -p ${input} | grep 'RW_SECTION_B' | cut -d' ' -f2)
+rw_b_size=$(dump_fmap -p ${input} | grep 'RW_SECTION_B' | cut -d' ' -f3)
+
+# Extract the RW BIOS chunks
+dd if=${input} of=dev.bin bs=1 skip=${rw_a_offset} count=${rw_a_size}
+dd if=${input} of=nor.bin bs=1 skip=${rw_b_offset} count=${rw_b_size}
+
+# Garble one to make it fail the signature. I know that we reserve 64K at the
+# start of the section for the signature and headers, so we'll make a random
+# payload and put the normal header on the front.
+dd if=/dev/urandom of=bad.bin bs=1 count=${rw_b_size}
+dd if=nor.bin of=bad.bin conv=notrunc bs=1 count=65536
+
+# A:Normal B:Normal
+output=${base}-NN.fd
+cp ${input} ${output}
+dd if=nor.bin of=${output} conv=notrunc bs=1 seek=${rw_a_offset}
+dd if=nor.bin of=${output} conv=notrunc bs=1 seek=${rw_b_offset}
+
+# A:Dev    B:Dev
+output=${base}-DD.fd
+cp ${input} ${output}
+dd if=dev.bin of=${output} conv=notrunc bs=1 seek=${rw_a_offset}
+dd if=dev.bin of=${output} conv=notrunc bs=1 seek=${rw_b_offset}
+
+# A:Normal B:Dev
+output=${base}-ND.fd
+cp ${input} ${output}
+dd if=nor.bin of=${output} conv=notrunc bs=1 seek=${rw_a_offset}
+dd if=dev.bin of=${output} conv=notrunc bs=1 seek=${rw_b_offset}
+
+# A:Dev    B:Normal
+output=${base}-DN.fd
+cp ${input} ${output}
+dd if=dev.bin of=${output} conv=notrunc bs=1 seek=${rw_a_offset}
+dd if=nor.bin of=${output} conv=notrunc bs=1 seek=${rw_b_offset}
+
+# A:Normal B:Bad
+output=${base}-NB.fd
+cp ${input} ${output}
+dd if=nor.bin of=${output} conv=notrunc bs=1 seek=${rw_a_offset}
+dd if=bad.bin of=${output} conv=notrunc bs=1 seek=${rw_b_offset}
+
+# A:Bad    B:Normal
+output=${base}-BN.fd
+cp ${input} ${output}
+dd if=bad.bin of=${output} conv=notrunc bs=1 seek=${rw_a_offset}
+dd if=nor.bin of=${output} conv=notrunc bs=1 seek=${rw_b_offset}
+
+# A:Dev    B:Bad
+output=${base}-DB.fd
+cp ${input} ${output}
+dd if=dev.bin of=${output} conv=notrunc bs=1 seek=${rw_a_offset}
+dd if=bad.bin of=${output} conv=notrunc bs=1 seek=${rw_b_offset}
+
+# A:Bad    B:Dev
+output=${base}-BD.fd
+cp ${input} ${output}
+dd if=bad.bin of=${output} conv=notrunc bs=1 seek=${rw_a_offset}
+dd if=dev.bin of=${output} conv=notrunc bs=1 seek=${rw_b_offset}
-- 
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