From: Frank Rowand <frowand.list@gmail.com>
To: Viresh Kumar <viresh.kumar@linaro.org>,
Rob Herring <robh+dt@kernel.org>,
Pantelis Antoniou <pantelis.antoniou@konsulko.com>,
Masahiro Yamada <masahiroy@kernel.org>
Cc: Vincent Guittot <vincent.guittot@linaro.org>,
linux-kernel@vger.kernel.org, anmar.oueja@linaro.org,
Bill Mills <bill.mills@linaro.org>,
David Gibson <david@gibson.dropbear.id.au>,
devicetree@vger.kernel.org,
Michal Marek <michal.lkml@markovi.net>
Subject: Re: [PATCH V6 2/6] scripts: dtc: Build fdtoverlay tool
Date: Fri, 29 Jan 2021 00:03:23 -0600 [thread overview]
Message-ID: <1f6408aa-9900-fe4a-d885-028ff8329707@gmail.com> (raw)
In-Reply-To: <2dfec4acb1bfbab08b431908ace0a77cc3279434.1611312122.git.viresh.kumar@linaro.org>
On 1/22/21 4:50 AM, Viresh Kumar wrote:
> We will start building overlays for platforms soon in the kernel and
> would need fdtoverlay going forward. Lets start building it.
>
> The fdtoverlay program applies (or merges) one or more overlay dtb
> blobs to a base dtb blob. The kernel build system would later use
> fdtoverlay to generate the overlaid blobs based on platform specific
> configurations.
>
> Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
> ---
> scripts/dtc/Makefile | 6 +++++-
> 1 file changed, 5 insertions(+), 1 deletion(-)
>
> diff --git a/scripts/dtc/Makefile b/scripts/dtc/Makefile
> index 4852bf44e913..5f19386a49eb 100644
> --- a/scripts/dtc/Makefile
> +++ b/scripts/dtc/Makefile
> @@ -1,13 +1,17 @@
> # SPDX-License-Identifier: GPL-2.0
> # scripts/dtc makefile
>
> -hostprogs-always-$(CONFIG_DTC) += dtc
> +hostprogs-always-$(CONFIG_DTC) += dtc 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
>
Please add this comment:
# The upstream project builds libfdt as a separate library. We are choosing to
# instead directly link the libfdt object files into fdtoverly
> +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 = $(addprefix libfdt/,$(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
>
>
next prev parent reply other threads:[~2021-01-29 6:04 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-22 10:50 [PATCH V6 0/6] dt: build overlays Viresh Kumar
2021-01-22 10:50 ` [PATCH V6 1/6] scripts: dtc: Fetch fdtoverlay.c from external DTC project Viresh Kumar
2021-01-22 10:50 ` [PATCH V6 2/6] scripts: dtc: Build fdtoverlay tool Viresh Kumar
2021-01-23 0:35 ` David Gibson
2021-01-25 3:15 ` Viresh Kumar
2021-01-29 6:03 ` Frank Rowand [this message]
2021-01-29 6:11 ` Viresh Kumar
2021-01-22 10:50 ` [PATCH V6 3/6] scripts: dtc: Remove the unused fdtdump.c file Viresh Kumar
2021-01-22 10:50 ` [PATCH V6 4/6] kbuild: Add support to build overlays (%.dtbo) Viresh Kumar
2021-01-22 11:12 ` Masahiro Yamada
2021-01-22 10:50 ` [PATCH V6 5/6] of: unittest: Create overlay_common.dtsi and testcases_common.dtsi Viresh Kumar
2021-01-23 3:07 ` David Gibson
2021-01-25 3:16 ` Viresh Kumar
2021-01-26 3:18 ` Frank Rowand
2021-01-27 5:56 ` Viresh Kumar
2021-01-29 5:59 ` Frank Rowand
2021-01-29 6:39 ` Frank Rowand
2021-01-22 10:50 ` [PATCH V6 6/6] of: unittest: Statically apply overlays using fdtoverlay Viresh Kumar
2021-01-26 3:15 ` Frank Rowand
2021-01-26 3:21 ` Frank Rowand
2021-01-26 3:45 ` [PATCH V6 0/6] dt: build overlays Frank Rowand
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