#!/bin/sh# SPDX-License-Identifier: GPL-2.0# Simple script to update the version of DTC carried by the Linux kernel## This script assumes that the dtc and the linux git trees are in the# same directory. After building dtc in the dtc directory, it copies the# source files and generated source file(s) into the scripts/dtc directory# in the kernel and creates a git commit updating them to the new# version.## Usage: from the top level Linux source tree, run:# $ ./scripts/dtc/update-dtc-source.sh## The script will change into the dtc tree, build and test dtc, copy the# relevant files into the kernel tree and create a git commit. The commit# message will need to be modified to reflect the version of DTC being# imported## TODO:# This script is pretty basic, but it is seldom used so a few manual tasks# aren't a big deal. If anyone is interested in making it more robust, the# the following would be nice:# * Actually fail to complete if any testcase fails.#   - The dtc "make check" target needs to return a failure# * Extract the version number from the dtc repo for the commit message# * Build dtc in the kernel tree# * run 'make check" on dtc built from the kernel tree set -ev DTC_UPSTREAM_PATH=`pwd`/../dtcDTC_LINUX_PATH=`pwd`/scripts/dtc DTC_SOURCE="checks.c data.c dtc.c dtc.h flattree.c fstree.c livetree.c srcpos.c \		srcpos.h treesource.c util.c util.h version_gen.h \		dtc-lexer.l dtc-parser.y"LIBFDT_SOURCE="fdt.c fdt.h fdt_addresses.c fdt_empty_tree.c \		fdt_overlay.c fdt_ro.c fdt_rw.c fdt_strerror.c fdt_sw.c \		fdt_wip.c libfdt.h libfdt_env.h libfdt_internal.h"FDTOVERLAY_SOURCE=fdtoverlay.c get_last_dtc_version() {	git log --oneline scripts/dtc/ | grep 'upstream' | head -1 | sed -e 's/^.* \(.*\)/\1/'} last_dtc_ver=$(get_last_dtc_version) # Build DTCcd $DTC_UPSTREAM_PATHmake cleanmake checkdtc_version=$(git describe HEAD)dtc_log=$(git log --oneline ${last_dtc_ver}..)  # Copy the files into the Linux treecd $DTC_LINUX_PATHfor f in $DTC_SOURCE $FDTOVERLAY_SOURCE; do	cp ${DTC_UPSTREAM_PATH}/${f} ${f}	git add ${f}donefor f in $LIBFDT_SOURCE; do       cp ${DTC_UPSTREAM_PATH}/libfdt/${f} libfdt/${f}       git add libfdt/${f}done sed -i -- 's/#include <libfdt_env.h>/#include "libfdt_env.h"/g' ./libfdt/libfdt.hsed -i -- 's/#include <fdt.h>/#include "fdt.h"/g' ./libfdt/libfdt.hgit add ./libfdt/libfdt.h commit_msg=$(cat << EOFscripts/dtc: Update to upstream version ${dtc_version} This adds the following commits from upstream: ${dtc_log}EOF) git commit -e -v -s -m "${commit_msg}"