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    Subject[RFC PATCH v2 4/4] script: make automatic dtb build info generation
    Date
    Append each "xxx.dtb.dts.tmp" file with "build-info" entry during dtb
    build. It allows to get build information (date, source version, ...)
    for each device tree without modify them manually.

    Signed-off-by: Alexandre Torgue <alexandre.torgue@st.com>

    diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib
    index a5af84ef4ffc..f084e78267b2 100644
    --- a/scripts/Makefile.lib
    +++ b/scripts/Makefile.lib
    @@ -289,6 +289,7 @@ quiet_cmd_dtc = DTC $@
    cmd_dtc = mkdir -p $(dir ${dtc-tmp}) ; \
    $(DTB_GEN_INFO) $(src) ; \
    $(HOSTCC) -E $(dtc_cpp_flags) -x assembler-with-cpp -o $(dtc-tmp) $< ; \
    + $(DTB_GEN_INFO) $(src) $(dtc-tmp) ; \
    $(DTC) -O $(2) -o $@ -b 0 \
    $(addprefix -i,$(dir $<) $(DTC_INCLUDE)) $(DTC_FLAGS) \
    -d $(depfile).dtc.tmp $(dtc-tmp) ; \
    diff --git a/scripts/gen_dtb_build_info.sh b/scripts/gen_dtb_build_info.sh
    index 0cd8bd98e410..72f31e386787 100755
    --- a/scripts/gen_dtb_build_info.sh
    +++ b/scripts/gen_dtb_build_info.sh
    @@ -6,5 +6,7 @@ set -o nounset
    DTB_DIR=$1
    DTB_COMPILE_BY=$(whoami | sed 's/\\/\\\\/')
    DTB_INFO="From Linux $KERNELRELEASE by $DTB_COMPILE_BY the $(date).\0"
    +DTS_FILE=$2

    -printf "$DTB_INFO" > "$DTB_DIR/dtb-build.txt"
    +printf "$DTB_INFO" > "arch/arm/boot/dts/dtb-build.txt"
    +echo "&{/} {build-info = /incbin/(\"dtb-build.txt\");};" >> $DTS_FILE
    --
    2.17.1
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