linux-kernel - Re: [PATCH] scripts: dtc: Start building fdtoverlay and fdtdump

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Date:   Wed, 6 Jan 2021 08:52:27 -0700
From:   Rob Herring <robh+dt@...nel.org>
To:     Viresh Kumar <viresh.kumar@...aro.org>
Cc:     Pantelis Antoniou <pantelis.antoniou@...sulko.com>,
        Frank Rowand <frowand.list@...il.com>,
        devicetree@...r.kernel.org,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Linux Kbuild mailing list <linux-kbuild@...r.kernel.org>,
        Vincent Guittot <vincent.guittot@...aro.org>,
        Bill Mills <bill.mills@...aro.org>,
        Anmar Oueja <anmar.oueja@...aro.org>
Subject: Re: [PATCH] scripts: dtc: Start building fdtoverlay and fdtdump

On Wed, Jan 6, 2021 at 3:09 AM Viresh Kumar <viresh.kumar@...aro.org> wrote:
>
> We will start building overlays for platforms soon in the kernel and
> would need these tools going forward. Lets fetch and build these.
>
> Note that a copy of fdtdump.c was already copied back in the year 2012,
> but it was never updated or built for some reason.
>
> Signed-off-by: Viresh Kumar <viresh.kumar@...aro.org>
> ---
>  scripts/dtc/Makefile             | 8 +++++++-
>  scripts/dtc/update-dtc-source.sh | 6 +++---

This needs to be 2 patches so we can do a dtc sync in between. So
update update-dtc-source.sh, run update-dtc-source.sh, update the
Makefile.

>  2 files changed, 10 insertions(+), 4 deletions(-)
>
> diff --git a/scripts/dtc/Makefile b/scripts/dtc/Makefile
> index 4852bf44e913..c607980a5c17 100644
> --- a/scripts/dtc/Makefile
> +++ b/scripts/dtc/Makefile
> @@ -1,12 +1,18 @@
>  # SPDX-License-Identifier: GPL-2.0
>  # scripts/dtc makefile
>
> -hostprogs-always-$(CONFIG_DTC)         += dtc
> +hostprogs-always-$(CONFIG_DTC)         += dtc fdtdump fdtoverlay
>  hostprogs-always-$(CHECK_DT_BINDING)   += dtc
>
>  dtc-objs       := dtc.o flattree.o fstree.o data.o livetree.o treesource.o \
>                    srcpos.o checks.o util.o
>  dtc-objs       += dtc-lexer.lex.o dtc-parser.tab.o
> +fdtdump-objs   := fdtdump.o util.o
> +
> +libfdt_dir     = libfdt
> +libfdt-objs    := fdt.o fdt_ro.o fdt_wip.o fdt_sw.o fdt_rw.o fdt_strerror.o fdt_empty_tree.o fdt_addresses.o fdt_overlay.o
> +libfdt         = $(addprefix $(libfdt_dir)/,$(libfdt-objs))
> +fdtoverlay-objs        := $(libfdt) fdtoverlay.o util.o
>
>  # Source files need to get at the userspace version of libfdt_env.h to compile
>  HOST_EXTRACFLAGS += -I $(srctree)/$(src)/libfdt
> diff --git a/scripts/dtc/update-dtc-source.sh b/scripts/dtc/update-dtc-source.sh
> index bc704e2a6a4a..9bc4afb71415 100755
> --- a/scripts/dtc/update-dtc-source.sh
> +++ b/scripts/dtc/update-dtc-source.sh
> @@ -31,9 +31,9 @@ set -ev
>  DTC_UPSTREAM_PATH=`pwd`/../dtc
>  DTC_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 yamltree.c \
> -               dtc-lexer.l dtc-parser.y"
> +DTC_SOURCE="checks.c data.c dtc.c dtc.h fdtdump.c fdtoverlay.c flattree.c \
> +               fstree.c livetree.c srcpos.c srcpos.h treesource.c util.c \
> +               util.h version_gen.h yamltree.c 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"
> --
> 2.25.0.rc1.19.g042ed3e048af
>