[PATCH 0/5] finish using .dtso for overlay source files

[PATCH 0/5] finish using .dtso for overlay source files

[Rasmus Villemoes]

This is a followup to the patches that landed in 2024.01 and nearly
made sure that source files for producing .dtbo files use the .dtso
extension. In the same release, a few new .dts files snuck in, and
there was also some test code involving .dtbo -> .dtbo.S -> .dtbo.o I
didn't really know how to handle at the time. This should finish the
job, bring us in sync with linux (at least in this respect), and drop
the .dts -> .dtbo build rule.

Patch 3 depends on 2, and patch 5 depends on the rest.

Rasmus Villemoes (5):
  arm64: dts: imx8mp: rename DHCOM SoM overlays to .dtso
  kbuild: Allow DTB overlays to built into .dtbo.S files
  test: overlay: rename overlay source files to .dtso
  test/py: efi_capsule: rename device tree overlay source to .dtso
  kbuild: Disallow DTB overlays to built from .dts named source files

 ...> imx8mp-dhcom-pdk-overlay-eth2xfast.dtso} |  0
 ... => imx8mp-dhcom-pdk3-overlay-rev100.dtso} |  0
 ...> imx8mp-dhcom-som-overlay-eth1xfast.dtso} |  0
 ...s => imx8mp-dhcom-som-overlay-rev100.dtso} |  0
 scripts/Makefile.lib                          | 23 +++++++++++++++----
 test/overlay/Makefile                         |  4 ++--
 test/overlay/cmd_ut_overlay.c                 |  8 +++----
 ...cked.dts => test-fdt-overlay-stacked.dtso} |  0
 ...-fdt-overlay.dts => test-fdt-overlay.dtso} |  0
 test/py/tests/test_efi_capsule/conftest.py    |  6 ++---
 .../{version.dts => version.dtso}             |  0
 11 files changed, 28 insertions(+), 13 deletions(-)
 rename arch/arm/dts/{imx8mp-dhcom-pdk-overlay-eth2xfast.dts => imx8mp-dhcom-pdk-overlay-eth2xfast.dtso} (100%)
 rename arch/arm/dts/{imx8mp-dhcom-pdk3-overlay-rev100.dts => imx8mp-dhcom-pdk3-overlay-rev100.dtso} (100%)
 rename arch/arm/dts/{imx8mp-dhcom-som-overlay-eth1xfast.dts => imx8mp-dhcom-som-overlay-eth1xfast.dtso} (100%)
 rename arch/arm/dts/{imx8mp-dhcom-som-overlay-rev100.dts => imx8mp-dhcom-som-overlay-rev100.dtso} (100%)
 rename test/overlay/{test-fdt-overlay-stacked.dts => test-fdt-overlay-stacked.dtso} (100%)
 rename test/overlay/{test-fdt-overlay.dts => test-fdt-overlay.dtso} (100%)
 rename test/py/tests/test_efi_capsule/{version.dts => version.dtso} (100%)

-- 
2.45.2

[PATCH 1/5] arm64: dts: imx8mp: rename DHCOM SoM overlays to .dtso

[Rasmus Villemoes]

Distinguish more clearly between source files meant for producing .dtb
from those meant for producing .dtbo. No functional change, as we
currently have rules for producing a foo.dtbo from either foo.dts or
foo.dtso.

Note that in the linux tree, all device tree overlay sources have been
renamed to .dtso, and the .dts->.dtbo rule is gone since v6.5 (commit
81d362732bac). So this is also a step towards staying closer to linux
with respect to both Kbuild and device tree sources.

Cc: Marek Vasut <marex@denx.de>
Signed-off-by: Rasmus Villemoes <rasmus.villemoes@prevas.dk>
---
 ...rlay-eth2xfast.dts => imx8mp-dhcom-pdk-overlay-eth2xfast.dtso} | 0
 ...3-overlay-rev100.dts => imx8mp-dhcom-pdk3-overlay-rev100.dtso} | 0
 ...rlay-eth1xfast.dts => imx8mp-dhcom-som-overlay-eth1xfast.dtso} | 0
 ...om-overlay-rev100.dts => imx8mp-dhcom-som-overlay-rev100.dtso} | 0
 4 files changed, 0 insertions(+), 0 deletions(-)
 rename arch/arm/dts/{imx8mp-dhcom-pdk-overlay-eth2xfast.dts => imx8mp-dhcom-pdk-overlay-eth2xfast.dtso} (100%)
 rename arch/arm/dts/{imx8mp-dhcom-pdk3-overlay-rev100.dts => imx8mp-dhcom-pdk3-overlay-rev100.dtso} (100%)
 rename arch/arm/dts/{imx8mp-dhcom-som-overlay-eth1xfast.dts => imx8mp-dhcom-som-overlay-eth1xfast.dtso} (100%)
 rename arch/arm/dts/{imx8mp-dhcom-som-overlay-rev100.dts => imx8mp-dhcom-som-overlay-rev100.dtso} (100%)

diff --git a/arch/arm/dts/imx8mp-dhcom-pdk-overlay-eth2xfast.dts b/arch/arm/dts/imx8mp-dhcom-pdk-overlay-eth2xfast.dtso
similarity index 100%
rename from arch/arm/dts/imx8mp-dhcom-pdk-overlay-eth2xfast.dts
rename to arch/arm/dts/imx8mp-dhcom-pdk-overlay-eth2xfast.dtso
diff --git a/arch/arm/dts/imx8mp-dhcom-pdk3-overlay-rev100.dts b/arch/arm/dts/imx8mp-dhcom-pdk3-overlay-rev100.dtso
similarity index 100%
rename from arch/arm/dts/imx8mp-dhcom-pdk3-overlay-rev100.dts
rename to arch/arm/dts/imx8mp-dhcom-pdk3-overlay-rev100.dtso
diff --git a/arch/arm/dts/imx8mp-dhcom-som-overlay-eth1xfast.dts b/arch/arm/dts/imx8mp-dhcom-som-overlay-eth1xfast.dtso
similarity index 100%
rename from arch/arm/dts/imx8mp-dhcom-som-overlay-eth1xfast.dts
rename to arch/arm/dts/imx8mp-dhcom-som-overlay-eth1xfast.dtso
diff --git a/arch/arm/dts/imx8mp-dhcom-som-overlay-rev100.dts b/arch/arm/dts/imx8mp-dhcom-som-overlay-rev100.dtso
similarity index 100%
rename from arch/arm/dts/imx8mp-dhcom-som-overlay-rev100.dts
rename to arch/arm/dts/imx8mp-dhcom-som-overlay-rev100.dtso
-- 
2.45.2

Re: [PATCH 1/5] arm64: dts: imx8mp: rename DHCOM SoM overlays to .dtso

[Marek Vasut]

On 7/5/24 10:29 PM, Rasmus Villemoes wrote:
> Distinguish more clearly between source files meant for producing .dtb
> from those meant for producing .dtbo. No functional change, as we
> currently have rules for producing a foo.dtbo from either foo.dts or
> foo.dtso.
> 
> Note that in the linux tree, all device tree overlay sources have been
> renamed to .dtso, and the .dts->.dtbo rule is gone since v6.5 (commit
> 81d362732bac). So this is also a step towards staying closer to linux
> with respect to both Kbuild and device tree sources.
> 
> Cc: Marek Vasut <marex@denx.de>
> Signed-off-by: Rasmus Villemoes <rasmus.villemoes@prevas.dk>
> ---
>   ...rlay-eth2xfast.dts => imx8mp-dhcom-pdk-overlay-eth2xfast.dtso} | 0
>   ...3-overlay-rev100.dts => imx8mp-dhcom-pdk3-overlay-rev100.dtso} | 0
>   ...rlay-eth1xfast.dts => imx8mp-dhcom-som-overlay-eth1xfast.dtso} | 0
>   ...om-overlay-rev100.dts => imx8mp-dhcom-som-overlay-rev100.dtso} | 0
>   4 files changed, 0 insertions(+), 0 deletions(-)
>   rename arch/arm/dts/{imx8mp-dhcom-pdk-overlay-eth2xfast.dts => imx8mp-dhcom-pdk-overlay-eth2xfast.dtso} (100%)
>   rename arch/arm/dts/{imx8mp-dhcom-pdk3-overlay-rev100.dts => imx8mp-dhcom-pdk3-overlay-rev100.dtso} (100%)
>   rename arch/arm/dts/{imx8mp-dhcom-som-overlay-eth1xfast.dts => imx8mp-dhcom-som-overlay-eth1xfast.dtso} (100%)
>   rename arch/arm/dts/{imx8mp-dhcom-som-overlay-rev100.dts => imx8mp-dhcom-som-overlay-rev100.dtso} (100%)
> 
> diff --git a/arch/arm/dts/imx8mp-dhcom-pdk-overlay-eth2xfast.dts b/arch/arm/dts/imx8mp-dhcom-pdk-overlay-eth2xfast.dtso
> similarity index 100%
> rename from arch/arm/dts/imx8mp-dhcom-pdk-overlay-eth2xfast.dts
> rename to arch/arm/dts/imx8mp-dhcom-pdk-overlay-eth2xfast.dtso
> diff --git a/arch/arm/dts/imx8mp-dhcom-pdk3-overlay-rev100.dts b/arch/arm/dts/imx8mp-dhcom-pdk3-overlay-rev100.dtso
> similarity index 100%
> rename from arch/arm/dts/imx8mp-dhcom-pdk3-overlay-rev100.dts
> rename to arch/arm/dts/imx8mp-dhcom-pdk3-overlay-rev100.dtso
> diff --git a/arch/arm/dts/imx8mp-dhcom-som-overlay-eth1xfast.dts b/arch/arm/dts/imx8mp-dhcom-som-overlay-eth1xfast.dtso
> similarity index 100%
> rename from arch/arm/dts/imx8mp-dhcom-som-overlay-eth1xfast.dts
> rename to arch/arm/dts/imx8mp-dhcom-som-overlay-eth1xfast.dtso
> diff --git a/arch/arm/dts/imx8mp-dhcom-som-overlay-rev100.dts b/arch/arm/dts/imx8mp-dhcom-som-overlay-rev100.dtso
> similarity index 100%
> rename from arch/arm/dts/imx8mp-dhcom-som-overlay-rev100.dts
> rename to arch/arm/dts/imx8mp-dhcom-som-overlay-rev100.dtso

Has this been even compile-tested ?

I think you need to fix up this:

arch/arm/dts/imx8mp-dhcom-som-overlay-eth2xfast.dts:#include 
"imx8mp-dhcom-som-overlay-eth1xfast.dts"

Re: [PATCH 1/5] arm64: dts: imx8mp: rename DHCOM SoM overlays to .dtso

[Rasmus Villemoes]

Marek Vasut <marex@denx.de> writes:

>>   ...om-overlay-rev100.dts => imx8mp-dhcom-som-overlay-rev100.dtso} | 0
>>   4 files changed, 0 insertions(+), 0 deletions(-)
>>   rename arch/arm/dts/{imx8mp-dhcom-pdk-overlay-eth2xfast.dts => imx8mp-dhcom-pdk-overlay-eth2xfast.dtso} (100%)
>>   rename arch/arm/dts/{imx8mp-dhcom-pdk3-overlay-rev100.dts => imx8mp-dhcom-pdk3-overlay-rev100.dtso} (100%)
>>   rename arch/arm/dts/{imx8mp-dhcom-som-overlay-eth1xfast.dts => imx8mp-dhcom-som-overlay-eth1xfast.dtso} (100%)
>>   rename arch/arm/dts/{imx8mp-dhcom-som-overlay-rev100.dts => imx8mp-dhcom-som-overlay-rev100.dtso} (100%)
>> diff --git a/arch/arm/dts/imx8mp-dhcom-pdk-overlay-eth2xfast.dts
>> b/arch/arm/dts/imx8mp-dhcom-pdk-overlay-eth2xfast.dtso
>> similarity index 100%
>> rename from arch/arm/dts/imx8mp-dhcom-pdk-overlay-eth2xfast.dts
>> rename to arch/arm/dts/imx8mp-dhcom-pdk-overlay-eth2xfast.dtso
>> diff --git a/arch/arm/dts/imx8mp-dhcom-pdk3-overlay-rev100.dts b/arch/arm/dts/imx8mp-dhcom-pdk3-overlay-rev100.dtso
>> similarity index 100%
>> rename from arch/arm/dts/imx8mp-dhcom-pdk3-overlay-rev100.dts
>> rename to arch/arm/dts/imx8mp-dhcom-pdk3-overlay-rev100.dtso
>> diff --git a/arch/arm/dts/imx8mp-dhcom-som-overlay-eth1xfast.dts b/arch/arm/dts/imx8mp-dhcom-som-overlay-eth1xfast.dtso
>> similarity index 100%
>> rename from arch/arm/dts/imx8mp-dhcom-som-overlay-eth1xfast.dts
>> rename to arch/arm/dts/imx8mp-dhcom-som-overlay-eth1xfast.dtso
>> diff --git a/arch/arm/dts/imx8mp-dhcom-som-overlay-rev100.dts b/arch/arm/dts/imx8mp-dhcom-som-overlay-rev100.dtso
>> similarity index 100%
>> rename from arch/arm/dts/imx8mp-dhcom-som-overlay-rev100.dts
>> rename to arch/arm/dts/imx8mp-dhcom-som-overlay-rev100.dtso
>
> Has this been even compile-tested ?
>
> I think you need to fix up this:
>
> arch/arm/dts/imx8mp-dhcom-som-overlay-eth2xfast.dts:#include
> "imx8mp-dhcom-som-overlay-eth1xfast.dts"

Argh, sorry. I thought I had had the CI chew on it, and I did, but I
somehow managed to not see that it had failed.

Not only does the include needs fixing up, the file itself should also
be renamed. I had just done 'git grep /plugin/;' to find candidates.

Rasmus

[PATCH 2/5] kbuild: Allow DTB overlays to built into .dtbo.S files

[Rasmus Villemoes]

[linux commit 941214a512d8, modified for U-Boot by removing the
include of vmlinux.lds.h and replacing STRUCT_ALIGNMENT by 16.]

DTB files can be built into the kernel by converting them to assembly
files then assembling them into object files. We extend this here
for DTB overlays with the .dtso extensions.

We change the start and end delimiting tag prefix to make it clear that
this data came from overlay files.

Signed-off-by: Rasmus Villemoes <rasmus.villemoes@prevas.dk>
---
 scripts/Makefile.lib | 20 +++++++++++++++++++-
 1 file changed, 19 insertions(+), 1 deletion(-)

diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib
index 3e68d5aa803..549c3619472 100644
--- a/scripts/Makefile.lib
+++ b/scripts/Makefile.lib
@@ -305,7 +305,7 @@ endif
 DTC_FLAGS += $(DTC_FLAGS_$(basetarget))
 
 # Generate an assembly file to wrap the output of the device tree compiler
-quiet_cmd_dt_S_dtb= DTB     $@
+quiet_cmd_dt_S_dtb= DTBS    $@
 # Modified for U-Boot
 cmd_dt_S_dtb=						\
 (							\
@@ -322,6 +322,24 @@ cmd_dt_S_dtb=						\
 $(obj)/%.dtb.S: $(obj)/%.dtb
 	$(call cmd,dt_S_dtb)
 
+# Generate an assembly file to wrap the output of the device tree compiler
+quiet_cmd_dt_S_dtbo= DTBOS   $@
+# Modified for U-Boot
+cmd_dt_S_dtbo=						\
+{							\
+	echo '.section .dtb.init.rodata,"a"';		\
+	echo '.balign 16';				\
+	echo '.global __dtbo_$(subst -,_,$(*F))_begin';	\
+	echo '__dtbo_$(subst -,_,$(*F))_begin:';	\
+	echo '.incbin "$<" ';				\
+	echo '__dtbo_$(subst -,_,$(*F))_end:';		\
+	echo '.global __dtbo_$(subst -,_,$(*F))_end';	\
+	echo '.balign 16';				\
+} > $@
+
+$(obj)/%.dtbo.S: $(obj)/%.dtbo
+	$(call cmd,dt_S_dtbo)
+
 ifeq ($(CONFIG_OF_LIBFDT_OVERLAY),y)
 DTC_FLAGS += -@
 endif
-- 
2.45.2

[PATCH 3/5] test: overlay: rename overlay source files to .dtso

[Rasmus Villemoes]

Distinguish more clearly between source files meant for producing .dtb
from those meant for producing .dtbo.

In this case, the files are really meant to be compiled to .dtbo ->
.dtbo.S -> .dtbo.o that get embedded in the image, which means that
the begin/end symbols generated by the makefile rule changes to
__dtbo_ rather than __dtb, so the consuming .c file needs updating,
but this should not result in any functional change.

Note that in the linux tree, all device tree overlay sources have been
renamed to .dtso, and the .dts->.dtbo rule is gone since v6.5 (commit
81d362732bac). So this is also a step towards staying closer to linux
with respect to both Kbuild and device tree sources.

Cc: Maxime Ripard <maxime.ripard@free-electrons.com>
Cc: Simon Glass <sjg@chromium.org>
Signed-off-by: Rasmus Villemoes <rasmus.villemoes@prevas.dk>
---
 test/overlay/Makefile                                     | 4 ++--
 test/overlay/cmd_ut_overlay.c                             | 8 ++++----
 ...-overlay-stacked.dts => test-fdt-overlay-stacked.dtso} | 0
 .../{test-fdt-overlay.dts => test-fdt-overlay.dtso}       | 0
 4 files changed, 6 insertions(+), 6 deletions(-)
 rename test/overlay/{test-fdt-overlay-stacked.dts => test-fdt-overlay-stacked.dtso} (100%)
 rename test/overlay/{test-fdt-overlay.dts => test-fdt-overlay.dtso} (100%)

diff --git a/test/overlay/Makefile b/test/overlay/Makefile
index 2deec929abf..47937e3c108 100644
--- a/test/overlay/Makefile
+++ b/test/overlay/Makefile
@@ -10,5 +10,5 @@ DTC_FLAGS += -@
 
 # DT overlays
 obj-y += test-fdt-base.dtb.o
-obj-y += test-fdt-overlay.dtb.o
-obj-y += test-fdt-overlay-stacked.dtb.o
+obj-y += test-fdt-overlay.dtbo.o
+obj-y += test-fdt-overlay-stacked.dtbo.o
diff --git a/test/overlay/cmd_ut_overlay.c b/test/overlay/cmd_ut_overlay.c
index bcb29a26e21..256afd115d2 100644
--- a/test/overlay/cmd_ut_overlay.c
+++ b/test/overlay/cmd_ut_overlay.c
@@ -21,8 +21,8 @@
 #define FDT_COPY_SIZE	(4 * SZ_1K)
 
 extern u32 __dtb_test_fdt_base_begin;
-extern u32 __dtb_test_fdt_overlay_begin;
-extern u32 __dtb_test_fdt_overlay_stacked_begin;
+extern u32 __dtbo_test_fdt_overlay_begin;
+extern u32 __dtbo_test_fdt_overlay_stacked_begin;
 
 static void *fdt;
 
@@ -216,8 +216,8 @@ int do_ut_overlay(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
 	const int n_ents = UNIT_TEST_SUITE_COUNT(overlay_test);
 	struct unit_test_state *uts;
 	void *fdt_base = &__dtb_test_fdt_base_begin;
-	void *fdt_overlay = &__dtb_test_fdt_overlay_begin;
-	void *fdt_overlay_stacked = &__dtb_test_fdt_overlay_stacked_begin;
+	void *fdt_overlay = &__dtbo_test_fdt_overlay_begin;
+	void *fdt_overlay_stacked = &__dtbo_test_fdt_overlay_stacked_begin;
 	void *fdt_overlay_copy, *fdt_overlay_stacked_copy;
 	int ret = -ENOMEM;
 
diff --git a/test/overlay/test-fdt-overlay-stacked.dts b/test/overlay/test-fdt-overlay-stacked.dtso
similarity index 100%
rename from test/overlay/test-fdt-overlay-stacked.dts
rename to test/overlay/test-fdt-overlay-stacked.dtso
diff --git a/test/overlay/test-fdt-overlay.dts b/test/overlay/test-fdt-overlay.dtso
similarity index 100%
rename from test/overlay/test-fdt-overlay.dts
rename to test/overlay/test-fdt-overlay.dtso
-- 
2.45.2

[PATCH 4/5] test/py: efi_capsule: rename device tree overlay source to .dtso

[Rasmus Villemoes]

Distinguish more clearly between source files meant for producing .dtb
from those meant for producing .dtbo.

Note that in the linux tree, all device tree overlay sources have been
renamed to .dtso, and the .dts->.dtbo rule is gone since v6.5 (commit
81d362732bac). So this is also a step towards staying closer to linux
with respect to both Kbuild and device tree sources, and eventually
eliminating all .dts -> .dtbo instances.

This also matches the documentation update done in commit 4fb7e570d6b.

Cc: Masahisa Kojima <kojima.masahisa@socionext.com>
Signed-off-by: Rasmus Villemoes <rasmus.villemoes@prevas.dk>
---
 test/py/tests/test_efi_capsule/conftest.py                  | 6 +++---
 .../py/tests/test_efi_capsule/{version.dts => version.dtso} | 0
 2 files changed, 3 insertions(+), 3 deletions(-)
 rename test/py/tests/test_efi_capsule/{version.dts => version.dtso} (100%)

diff --git a/test/py/tests/test_efi_capsule/conftest.py b/test/py/tests/test_efi_capsule/conftest.py
index 80b12977d6f..61eab5112a1 100644
--- a/test/py/tests/test_efi_capsule/conftest.py
+++ b/test/py/tests/test_efi_capsule/conftest.py
@@ -53,7 +53,7 @@ def efi_capsule_data(request, u_boot_config):
 
         # Update dtb to add the version information
         check_call('cd %s; '
-                   'cp %s/test/py/tests/test_efi_capsule/version.dts .'
+                   'cp %s/test/py/tests/test_efi_capsule/version.dtso .'
                    % (data_dir, u_boot_config.source_dir), shell=True)
 
         if capsule_auth_enabled:
@@ -61,13 +61,13 @@ def efi_capsule_data(request, u_boot_config):
                        'cp %s/arch/sandbox/dts/test.dtb test_sig.dtb'
                        % (data_dir, u_boot_config.build_dir), shell=True)
             check_call('cd %s; '
-                       'dtc -@ -I dts -O dtb -o version.dtbo version.dts; '
+                       'dtc -@ -I dts -O dtb -o version.dtbo version.dtso; '
                        'fdtoverlay -i test_sig.dtb '
                             '-o test_ver.dtb version.dtbo'
                        % (data_dir), shell=True)
         else:
             check_call('cd %s; '
-                       'dtc -@ -I dts -O dtb -o version.dtbo version.dts; '
+                       'dtc -@ -I dts -O dtb -o version.dtbo version.dtso; '
                        'fdtoverlay -i %s/arch/sandbox/dts/test.dtb '
                             '-o test_ver.dtb version.dtbo'
                        % (data_dir, u_boot_config.build_dir), shell=True)
diff --git a/test/py/tests/test_efi_capsule/version.dts b/test/py/tests/test_efi_capsule/version.dtso
similarity index 100%
rename from test/py/tests/test_efi_capsule/version.dts
rename to test/py/tests/test_efi_capsule/version.dtso
-- 
2.45.2

[PATCH 5/5] kbuild: Disallow DTB overlays to built from .dts named source files

[Rasmus Villemoes]

[equivalent to linux commit 81d362732bac]

As a follow up to the series allowing DTB overlays to built from .dtso
files. Now that all overlays have been renamed, remove the ability to
build from overlays from .dts files to prevent any files with the old
name from accidental being added.

Signed-off-by: Rasmus Villemoes <rasmus.villemoes@prevas.dk>
---
 scripts/Makefile.lib | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib
index 549c3619472..d6fbf9a7659 100644
--- a/scripts/Makefile.lib
+++ b/scripts/Makefile.lib
@@ -416,9 +416,6 @@ cmd_dtco = mkdir -p $(dir ${dtc-tmp}) ; \
 		-d $(depfile).dtc.tmp $(dtc-tmp) ; \
 	cat $(depfile).pre.tmp $(depfile).dtc.tmp > $(depfile)
 
-$(obj)/%.dtbo: $(src)/%.dts $(DTC) FORCE
-	$(call if_changed_dep,dtco)
-
 $(obj)/%.dtbo: $(src)/%.dtso $(DTC) FORCE
 	$(call if_changed_dep,dtco)
 
-- 
2.45.2