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| -rwxr-xr-x | util/bcmp.sh | 122 |
1 files changed, 122 insertions, 0 deletions
diff --git a/util/bcmp.sh b/util/bcmp.sh new file mode 100755 index 0000000000..81dede5582 --- /dev/null +++ b/util/bcmp.sh @@ -0,0 +1,122 @@ +#!/bin/bash +# +# Copyright 2021 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. +# +# compare local tree Cr50 source files with a different git branch. +# +# This script is supposed to run in a Cr50 source tree. The script will remove +# and rebuild Cr50 image, then scan the .o and .d files in the build directory +# to figure out all *.[cSh] files used to build the image. +# +# Once the list of files is created, all files' contents are compared with a +# different git branch. By default the other branch is +# cros/firmware-cr50-9308.B, it can be changed as a command line argument +# passed to this script. + +tmpf="/tmp/bcmp.$$" +trap '{ rm -f "${tmpf}" ; }' EXIT +default_compare_to="cros/firmware-cr50-stab-14294.B" + +find_src_file() { + local f="$1" + local log="$2" + + if [[ -f ${f} ]]; then + echo "${cr50_dir} ${f}" >> "${log}" + return + fi + + g="${f/\.c/.S}" + if [[ "${g}" != "${f}" ]]; then + # Could be an assembler source file. + if [[ -f ${g} ]]; then + echo "${cr50_dir} ${g}" >> "${log}" + return + fi + fi + g="${f#board/cr50/}" + if [[ -f ${tpm2_dir}/${g} ]]; then + echo "${tpm2_dir} ${f}" >> "${log}" + return + fi + case "${f}" in + (*dcrypto/fips_module* | *linkedtpm2*) ;; + (*) echo "neither ${f} nor ${g} found in the trees" >&2 + esac +} + +branch_exists() { + local tree="$1" + local branch="$2" + + git -C "${tree}" show-branch "${branch}" > /dev/null 2>&1 +} + +if [[ ! -f Makefile.rules || ! -f board/cr50/board.h ]]; then + echo "this script must run in the root ec directory" >&2 + exit 1 +fi + +if [[ "$#" != 0 ]]; then + compare_to="$1" +else + compare_to="${default_compare_to}" +fi + +cr50_dir="$(pwd)" +tpm2_dir="$(readlink -f ../../third_party/tpm2/)" + +if ! branch_exists "${tpm2_dir}" "${compare_to}"; then + echo "Branch ${compare_to} not found in ${tpm2_dir}" >&2 + exit 1 +fi + +cr50_compare_to="${compare_to}" +if ! branch_exists "${cr50_dir}" "${cr50_compare_to}"; then + # This could be a new branch with mangled name. + cr50_compare_to="${cr50_compare_to}-cr50_stab" + if ! branch_exists "${cr50_dir}" "${cr50_compare_to}"; then + echo "Branch ${compare_to} not found in ${cr50_dir}" >&2 + exit 1 + fi +fi + +echo "Will rebuild CR50" +if ! make BOARD=cr50 -j > /dev/null ; then + echo "building cr50 failed" >&2 + exit 1 +fi + +echo "Now checking .c and .S files" +for f in $(find build/cr50/RW/ -name '*.o' | + sed 's|build/cr50/RW/||;s/\.o/.c/'); do + find_src_file "${f}" "${tmpf}" +done + +echo "Now checking .h files" +for f in $(find build/cr50/RW/ -name '*.d' -exec cat {} + | + sed 's/ /\n/g' | + sed 's^/mnt/host/source/src/platform/\(ec\|cr50\)/^^' | + sed 's^/mnt/host/source/src/third_party/tpm2/^^' | + sed 's/:$//'| + sort -u | + grep '\.h$' ); do + find_src_file "${f}" "${tmpf}" +done + +sort "${tmpf}" | while read -r dir file; do + if [[ ${dir} == */cr50 ]]; then + branch="${cr50_compare_to}" + else + branch="${compare_to}" + # TPM2 .o files are placed in board/cr50 in the build directory. Strip the + # prefix so that the matching .c file can be found in the TPM2 root. + file="${file#board/cr50/}" + fi + + if ! git -C "${dir}" diff "${branch}" "${file}" 2>/dev/null; then + echo "Problems comparing ${file}, does it exist in ${branch} in ${dir}?" >&2 + fi +done |