1 #!/bin/sh
2 # SPDX-License-Identifier: GPL-2.0
3 # Simple script to update the version of DTC carried by the Linux kernel
4 #
5 # This script assumes that the dtc and the linux git trees are in the
6 # same directory. After building dtc in the dtc directory, it copies the
7 # source files and generated source file(s) into the scripts/dtc directory
8 # in the kernel and creates a git commit updating them to the new
9 # version.
10 #
11 # Usage: from the top level Linux source tree, run:
12 # $ ./scripts/dtc/update-dtc-source.sh
13 #
14 # The script will change into the dtc tree, build and test dtc, copy the
15 # relevant files into the kernel tree and create a git commit. The commit
16 # message will need to be modified to reflect the version of DTC being
17 # imported
18 #
19 # TODO:
20 # This script is pretty basic, but it is seldom used so a few manual tasks
21 # aren't a big deal. If anyone is interested in making it more robust, the
22 # the following would be nice:
23 # * Actually fail to complete if any testcase fails.
24 # - The dtc "make check" target needs to return a failure
25 # * Extract the version number from the dtc repo for the commit message
26 # * Build dtc in the kernel tree
27 # * run 'make check" on dtc built from the kernel tree
28
29 set -ev
30
31 DTC_UPSTREAM_PATH=`pwd`/../dtc
32 DTC_LINUX_PATH=`pwd`/scripts/dtc
33
34 DTC_SOURCE="checks.c data.c dtc.c dtc.h flattree.c fstree.c livetree.c srcpos.c \
35 srcpos.h treesource.c util.c util.h version_gen.h \
36 dtc-lexer.l dtc-parser.y"
37 LIBFDT_SOURCE="fdt.c fdt.h fdt_addresses.c fdt_empty_tree.c \
38 fdt_overlay.c fdt_ro.c fdt_rw.c fdt_strerror.c fdt_sw.c \
39 fdt_wip.c libfdt.h libfdt_env.h libfdt_internal.h"
40 FDTOVERLAY_SOURCE=fdtoverlay.c
41
42 get_last_dtc_version() {
43 git log --oneline scripts/dtc/ | grep 'upstream' | head -1 | sed -e 's/^.* \(.*\)/\1/'
44 }
45
46 last_dtc_ver=$(get_last_dtc_version)
47
48 # Build DTC
49 cd $DTC_UPSTREAM_PATH
50 make clean
51 make check
52 dtc_version=$(git describe HEAD)
53 dtc_log=$(git log --oneline ${last_dtc_ver}..)
54
55
56 # Copy the files into the Linux tree
57 cd $DTC_LINUX_PATH
58 for f in $DTC_SOURCE $FDTOVERLAY_SOURCE; do
59 cp ${DTC_UPSTREAM_PATH}/${f} ${f}
60 git add ${f}
61 done
62 for f in $LIBFDT_SOURCE; do
63 cp ${DTC_UPSTREAM_PATH}/libfdt/${f} libfdt/${f}
64 git add libfdt/${f}
65 done
66
67 sed -i -- 's/#include <libfdt_env.h>/#include "libfdt_env.h"/g' ./libfdt/libfdt.h
68 sed -i -- 's/#include <fdt.h>/#include "fdt.h"/g' ./libfdt/libfdt.h
69 git add ./libfdt/libfdt.h
70
71 commit_msg=$(cat << EOF
72 scripts/dtc: Update to upstream version ${dtc_version}
73
74 This adds the following commits from upstream:
75
76 ${dtc_log}
77 EOF
78 )
79
80 git commit -e -v -s -m "${commit_msg}"
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