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* [PATCH v4 0/9] Devicetree build consolidation
@ 2018-10-01 15:25 Rob Herring
  2018-10-01 15:25 ` [PATCH v4 1/9] powerpc: build .dtb files in dts directory Rob Herring
                   ` (8 more replies)
  0 siblings, 9 replies; 11+ messages in thread
From: Rob Herring @ 2018-10-01 15:25 UTC (permalink / raw)
  To: devicetree, linux-kernel, Masahiro Yamada, Frank Rowand
  Cc: Michal Marek, Vineet Gupta, Russell King, Catalin Marinas,
	Yoshinori Sato, Michal Simek, Ralf Baechle, James Hogan,
	Benjamin Herrenschmidt, Paul Mackerras, Michael Ellerman,
	Chris Zankel, Max Filippov, linux-kbuild, linux-snps-arc,
	linux-arm-kernel, uclinux-h8-devel, linux-mips, nios2-dev,
	linuxppc-dev, linux-xtensa, Will Deacon, Paul Burton,
	Ley Foon Tan

This series addresses a couple of issues I have with building dts files.

First, the ability to build all the dts files in the tree. This has been
supported on most arches for some time with powerpc being the main
exception. The reason powerpc wasn't supported was it needed a change
in the location built dtb files are put.

Secondly, it's a pain to acquire all the cross-compilers needed to build
dtbs for each arch. There's no reason to build with the cross compiler and
the host compiler is perfectly fine as we only need the pre-processor.

I started addressing just those 2 problems, but kept finding small
differences such as target dependencies and dtbs_install support across
architectures. Instead of trying to align all these, I've consolidated the
build targets moving them out of the arch makefiles.

I'd like to take the series via the DT tree.

PPC maintainers, really need you review/ack on this especially patch 1.

Rob


v4:
 - Make dtbs and %.dtb rules depend on arch/$ARCH/boot/dts path rather than
   CONFIG_OF_EARLY_FLATTREE
 - Fix install path missing kernel version for dtbs_install
 - Fix "make CONFIG_OF_ALL_DTBS=y" for arches like ARM which selectively
   enable CONFIG_OF (and therefore dtc)

v3:
 - Rework dtc dependency to avoid 2 entry paths to scripts/dtc/. Essentially,
   I copied 'scripts_basic'.
 - Add missing scripts_basic dependency for dtc and missing PHONY tag.
 - Drop the '|' order only from dependencies
 - Drop %.dtb.S and %.dtb.o as top-level targets
 - PPC: remove duplicate mpc5200 dtbs from image-y targets

v2:
 - Fix $arch/boot/dts path check for out of tree builds
 - Fix dtc dependency for building built-in dtbs
 - Fix microblaze built-in dtb building
 - Add dtbs target for microblaze


Rob Herring (9):
  powerpc: build .dtb files in dts directory
  nios2: build .dtb files in dts directory
  nios2: use common rules to build built-in dtb
  nios2: fix building all dtbs
  c6x: use common built-in dtb support
  kbuild: consolidate Devicetree dtb build rules
  powerpc: enable building all dtbs
  c6x: enable building all dtbs
  microblaze: enable building all dtbs

 Makefile                           | 37 +++++++++++++++++++-
 arch/arc/Makefile                  |  6 ----
 arch/arm/Makefile                  | 20 +----------
 arch/arm64/Makefile                | 17 +--------
 arch/c6x/Makefile                  |  2 --
 arch/c6x/boot/dts/Makefile         | 17 ++++-----
 arch/c6x/boot/dts/linked_dtb.S     |  2 --
 arch/c6x/include/asm/sections.h    |  1 -
 arch/c6x/kernel/setup.c            |  4 +--
 arch/c6x/kernel/vmlinux.lds.S      | 10 ------
 arch/h8300/Makefile                | 11 +-----
 arch/microblaze/Makefile           |  4 +--
 arch/microblaze/boot/dts/Makefile  |  4 +++
 arch/mips/Makefile                 | 15 +-------
 arch/nds32/Makefile                |  2 +-
 arch/nios2/Makefile                | 11 +-----
 arch/nios2/boot/Makefile           | 22 ------------
 arch/nios2/boot/dts/Makefile       |  6 ++++
 arch/nios2/boot/linked_dtb.S       | 19 -----------
 arch/powerpc/Makefile              |  3 --
 arch/powerpc/boot/Makefile         | 55 ++++++++++++++----------------
 arch/powerpc/boot/dts/Makefile     |  6 ++++
 arch/powerpc/boot/dts/fsl/Makefile |  4 +++
 arch/xtensa/Makefile               | 12 +------
 scripts/Makefile                   |  3 +-
 scripts/Makefile.lib               |  2 +-
 scripts/dtc/Makefile               |  2 +-
 27 files changed, 102 insertions(+), 195 deletions(-)
 delete mode 100644 arch/c6x/boot/dts/linked_dtb.S
 create mode 100644 arch/nios2/boot/dts/Makefile
 delete mode 100644 arch/nios2/boot/linked_dtb.S
 create mode 100644 arch/powerpc/boot/dts/Makefile
 create mode 100644 arch/powerpc/boot/dts/fsl/Makefile

--
2.17.1

^ permalink raw reply	[flat|nested] 11+ messages in thread
* [PATCH v4 1/9] powerpc: build .dtb files in dts directory
  2018-10-01 15:25 [PATCH v4 0/9] Devicetree build consolidation Rob Herring
@ 2018-10-01 15:25 ` Rob Herring
  2018-10-01 15:25 ` [PATCH v4 2/9] nios2: " Rob Herring
                   ` (7 subsequent siblings)
  8 siblings, 0 replies; 11+ messages in thread
From: Rob Herring @ 2018-10-01 15:25 UTC (permalink / raw)
  To: devicetree, linux-kernel, Masahiro Yamada, Frank Rowand
  Cc: Benjamin Herrenschmidt, Paul Mackerras, Michael Ellerman, linuxppc-dev

Align powerpc with other architectures which build the dtb files in the
same directory as the dts files. This is also in line with most other
build targets which are located in the same directory as the source.
This move will help enable the 'dtbs' target which builds all the dtbs
regardless of kernel config.

This transition could break some scripts if they expect dtb files in the
old location.

Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: linuxppc-dev@lists.ozlabs.org
Signed-off-by: Rob Herring <robh@kernel.org>
---

PPC maintainers, really need you review/ack on this.

 arch/powerpc/Makefile          |  2 +-
 arch/powerpc/boot/Makefile     | 55 ++++++++++++++++------------------
 arch/powerpc/boot/dts/Makefile |  1 +
 3 files changed, 28 insertions(+), 30 deletions(-)
 create mode 100644 arch/powerpc/boot/dts/Makefile

diff --git a/arch/powerpc/Makefile b/arch/powerpc/Makefile
index 11a1acba164a..53ea887eb34e 100644
--- a/arch/powerpc/Makefile
+++ b/arch/powerpc/Makefile
@@ -294,7 +294,7 @@ bootwrapper_install:
 	$(Q)$(MAKE) $(build)=$(boot) $(patsubst %,$(boot)/%,$@)

 %.dtb: scripts
-	$(Q)$(MAKE) $(build)=$(boot) $(patsubst %,$(boot)/%,$@)
+	$(Q)$(MAKE) $(build)=$(boot)/dts $(patsubst %,$(boot)/dts/%,$@)

 # Used to create 'merged defconfigs'
 # To use it $(call) it with the first argument as the base defconfig
diff --git a/arch/powerpc/boot/Makefile b/arch/powerpc/boot/Makefile
index 0fb96c26136f..bca5c23767df 100644
--- a/arch/powerpc/boot/Makefile
+++ b/arch/powerpc/boot/Makefile
@@ -304,9 +304,9 @@ image-$(CONFIG_PPC_ADDER875)		+= cuImage.adder875-uboot \
 					   dtbImage.adder875-redboot

 # Board ports in arch/powerpc/platform/52xx/Kconfig
-image-$(CONFIG_PPC_LITE5200)		+= cuImage.lite5200 lite5200.dtb
-image-$(CONFIG_PPC_LITE5200)		+= cuImage.lite5200b lite5200b.dtb
-image-$(CONFIG_PPC_MEDIA5200)		+= cuImage.media5200 media5200.dtb
+image-$(CONFIG_PPC_LITE5200)		+= cuImage.lite5200
+image-$(CONFIG_PPC_LITE5200)		+= cuImage.lite5200b
+image-$(CONFIG_PPC_MEDIA5200)		+= cuImage.media5200

 # Board ports in arch/powerpc/platform/82xx/Kconfig
 image-$(CONFIG_MPC8272_ADS)		+= cuImage.mpc8272ads
@@ -381,11 +381,11 @@ $(addprefix $(obj)/, $(sort $(filter zImage.%, $(image-y)))): vmlinux $(wrapperb
 	$(call if_changed,wrap,$(subst $(obj)/zImage.,,$@))

 # dtbImage% - a dtbImage is a zImage with an embedded device tree blob
-$(obj)/dtbImage.initrd.%: vmlinux $(wrapperbits) $(obj)/%.dtb FORCE
-	$(call if_changed,wrap,$*,,$(obj)/$*.dtb,$(obj)/ramdisk.image.gz)
+$(obj)/dtbImage.initrd.%: vmlinux $(wrapperbits) $(obj)/dts/%.dtb FORCE
+	$(call if_changed,wrap,$*,,$(obj)/dts/$*.dtb,$(obj)/ramdisk.image.gz)

-$(obj)/dtbImage.%: vmlinux $(wrapperbits) $(obj)/%.dtb FORCE
-	$(call if_changed,wrap,$*,,$(obj)/$*.dtb)
+$(obj)/dtbImage.%: vmlinux $(wrapperbits) $(obj)/dts/%.dtb FORCE
+	$(call if_changed,wrap,$*,,$(obj)/dts/$*.dtb)

 # This cannot be in the root of $(src) as the zImage rule always adds a $(obj)
 # prefix
@@ -395,36 +395,33 @@ $(obj)/vmlinux.strip: vmlinux
 $(obj)/uImage: vmlinux $(wrapperbits) FORCE
 	$(call if_changed,wrap,uboot)

-$(obj)/uImage.initrd.%: vmlinux $(obj)/%.dtb $(wrapperbits) FORCE
-	$(call if_changed,wrap,uboot-$*,,$(obj)/$*.dtb,$(obj)/ramdisk.image.gz)
+$(obj)/uImage.initrd.%: vmlinux $(obj)/dts/%.dtb $(wrapperbits) FORCE
+	$(call if_changed,wrap,uboot-$*,,$(obj)/dts/$*.dtb,$(obj)/ramdisk.image.gz)

-$(obj)/uImage.%: vmlinux $(obj)/%.dtb $(wrapperbits) FORCE
-	$(call if_changed,wrap,uboot-$*,,$(obj)/$*.dtb)
+$(obj)/uImage.%: vmlinux $(obj)/dts/%.dtb $(wrapperbits) FORCE
+	$(call if_changed,wrap,uboot-$*,,$(obj)/dts/$*.dtb)

-$(obj)/cuImage.initrd.%: vmlinux $(obj)/%.dtb $(wrapperbits) FORCE
-	$(call if_changed,wrap,cuboot-$*,,$(obj)/$*.dtb,$(obj)/ramdisk.image.gz)
+$(obj)/cuImage.initrd.%: vmlinux $(obj)/dts/%.dtb $(wrapperbits) FORCE
+	$(call if_changed,wrap,cuboot-$*,,$(obj)/dts/$*.dtb,$(obj)/ramdisk.image.gz)

-$(obj)/cuImage.%: vmlinux $(obj)/%.dtb $(wrapperbits) FORCE
-	$(call if_changed,wrap,cuboot-$*,,$(obj)/$*.dtb)
+$(obj)/cuImage.%: vmlinux $(obj)/dts/%.dtb $(wrapperbits) FORCE
+	$(call if_changed,wrap,cuboot-$*,,$(obj)/dts/$*.dtb)

-$(obj)/simpleImage.initrd.%: vmlinux $(obj)/%.dtb $(wrapperbits) FORCE
-	$(call if_changed,wrap,simpleboot-$*,,$(obj)/$*.dtb,$(obj)/ramdisk.image.gz)
+$(obj)/simpleImage.initrd.%: vmlinux $(obj)/dts/%.dtb $(wrapperbits) FORCE
+	$(call if_changed,wrap,simpleboot-$*,,$(obj)/dts/$*.dtb,$(obj)/ramdisk.image.gz)

-$(obj)/simpleImage.%: vmlinux $(obj)/%.dtb $(wrapperbits) FORCE
-	$(call if_changed,wrap,simpleboot-$*,,$(obj)/$*.dtb)
+$(obj)/simpleImage.%: vmlinux $(obj)/dts/%.dtb $(wrapperbits) FORCE
+	$(call if_changed,wrap,simpleboot-$*,,$(obj)/dts/$*.dtb)

-$(obj)/treeImage.initrd.%: vmlinux $(obj)/%.dtb $(wrapperbits) FORCE
-	$(call if_changed,wrap,treeboot-$*,,$(obj)/$*.dtb,$(obj)/ramdisk.image.gz)
+$(obj)/treeImage.initrd.%: vmlinux $(obj)/dts/%.dtb $(wrapperbits) FORCE
+	$(call if_changed,wrap,treeboot-$*,,$(obj)/dts/$*.dtb,$(obj)/ramdisk.image.gz)

-$(obj)/treeImage.%: vmlinux $(obj)/%.dtb $(wrapperbits) FORCE
-	$(call if_changed,wrap,treeboot-$*,,$(obj)/$*.dtb)
+$(obj)/treeImage.%: vmlinux $(obj)/dts/%.dtb $(wrapperbits) FORCE
+	$(call if_changed,wrap,treeboot-$*,,$(obj)/dts/$*.dtb)

-# Rule to build device tree blobs
-$(obj)/%.dtb: $(src)/dts/%.dts FORCE
-	$(call if_changed_dep,dtc)
-
-$(obj)/%.dtb: $(src)/dts/fsl/%.dts FORCE
-	$(call if_changed_dep,dtc)
+# Needed for the above targets to work with dts/fsl/ files
+$(obj)/dts/%.dtb: $(obj)/dts/fsl/%.dtb
+	@cp $< $@

 # If there isn't a platform selected then just strip the vmlinux.
 ifeq (,$(image-y))
diff --git a/arch/powerpc/boot/dts/Makefile b/arch/powerpc/boot/dts/Makefile
new file mode 100644
index 000000000000..f66554cd5c45
--- /dev/null
+++ b/arch/powerpc/boot/dts/Makefile
@@ -0,0 +1 @@
+# SPDX-License-Identifier: GPL-2.0
--
2.17.1

^ permalink raw reply related	[flat|nested] 11+ messages in thread
* [PATCH v4 2/9] nios2: build .dtb files in dts directory
  2018-10-01 15:25 [PATCH v4 0/9] Devicetree build consolidation Rob Herring
  2018-10-01 15:25 ` [PATCH v4 1/9] powerpc: build .dtb files in dts directory Rob Herring
@ 2018-10-01 15:25 ` Rob Herring
  2018-10-01 15:25 ` [PATCH v4 3/9] nios2: use common rules to build built-in dtb Rob Herring
                   ` (6 subsequent siblings)
  8 siblings, 0 replies; 11+ messages in thread
From: Rob Herring @ 2018-10-01 15:25 UTC (permalink / raw)
  To: devicetree, linux-kernel, Masahiro Yamada, Frank Rowand
  Cc: Ley Foon Tan, nios2-dev

Align nios2 with other architectures which build the dtb files in the
same directory as the dts files. This is also in line with most other
build targets which are located in the same directory as the source.
This move will help enable the 'dtbs' target which builds all the dtbs
regardless of kernel config.

This transition could break some scripts if they expect dtb files in
the old location.

Cc: Ley Foon Tan <lftan@altera.com>
Cc: nios2-dev@lists.rocketboards.org
Signed-off-by: Rob Herring <robh@kernel.org>
---
 arch/nios2/Makefile          | 4 ++--
 arch/nios2/boot/Makefile     | 4 ----
 arch/nios2/boot/dts/Makefile | 1 +
 3 files changed, 3 insertions(+), 6 deletions(-)
 create mode 100644 arch/nios2/boot/dts/Makefile

diff --git a/arch/nios2/Makefile b/arch/nios2/Makefile
index 8673a79dca9c..50eece1c6adb 100644
--- a/arch/nios2/Makefile
+++ b/arch/nios2/Makefile
@@ -59,10 +59,10 @@ archclean:
 	$(Q)$(MAKE) $(clean)=$(nios2-boot)
 
 %.dtb: | scripts
-	$(Q)$(MAKE) $(build)=$(nios2-boot) $(nios2-boot)/$@
+	$(Q)$(MAKE) $(build)=$(nios2-boot)/dts $(nios2-boot)/dts/$@
 
 dtbs:
-	$(Q)$(MAKE) $(build)=$(nios2-boot) $(nios2-boot)/$@
+	$(Q)$(MAKE) $(build)=$(nios2-boot)/dts
 
 $(BOOT_TARGETS): vmlinux
 	$(Q)$(MAKE) $(build)=$(nios2-boot) $(nios2-boot)/$@
diff --git a/arch/nios2/boot/Makefile b/arch/nios2/boot/Makefile
index 2ba23a679732..007586094dde 100644
--- a/arch/nios2/boot/Makefile
+++ b/arch/nios2/boot/Makefile
@@ -47,10 +47,6 @@ obj-$(CONFIG_NIOS2_DTB_SOURCE_BOOL) += linked_dtb.o
 
 targets += $(dtb-y)
 
-# Rule to build device tree blobs with make command
-$(obj)/%.dtb: $(src)/dts/%.dts FORCE
-	$(call if_changed_dep,dtc)
-
 $(obj)/dtbs: $(addprefix $(obj)/, $(dtb-y))
 
 install:
diff --git a/arch/nios2/boot/dts/Makefile b/arch/nios2/boot/dts/Makefile
new file mode 100644
index 000000000000..f66554cd5c45
--- /dev/null
+++ b/arch/nios2/boot/dts/Makefile
@@ -0,0 +1 @@
+# SPDX-License-Identifier: GPL-2.0
-- 
2.17.1


^ permalink raw reply related	[flat|nested] 11+ messages in thread
* [PATCH v4 3/9] nios2: use common rules to build built-in dtb
  2018-10-01 15:25 [PATCH v4 0/9] Devicetree build consolidation Rob Herring
  2018-10-01 15:25 ` [PATCH v4 1/9] powerpc: build .dtb files in dts directory Rob Herring
  2018-10-01 15:25 ` [PATCH v4 2/9] nios2: " Rob Herring
@ 2018-10-01 15:25 ` Rob Herring
  2018-10-01 15:25 ` [PATCH v4 4/9] nios2: fix building all dtbs Rob Herring
                   ` (5 subsequent siblings)
  8 siblings, 0 replies; 11+ messages in thread
From: Rob Herring @ 2018-10-01 15:25 UTC (permalink / raw)
  To: devicetree, linux-kernel, Masahiro Yamada, Frank Rowand
  Cc: Ley Foon Tan, nios2-dev

Using the common build support for built-in dtb files just requires
adding a .dtb.o target to obj-y.

This has the side effect that CONFIG_NIOS2_DTB_SOURCE should now be just
the dts filename in arch/nios2/boot/dts/ directory. Before any path was
supported, but if you want to build in your dtb to the kernel, it should
be in the kernel tree.

Cc: Ley Foon Tan <lftan@altera.com>
Cc: nios2-dev@lists.rocketboards.org
Signed-off-by: Rob Herring <robh@kernel.org>
---
 arch/nios2/Makefile          |  6 ++----
 arch/nios2/boot/Makefile     | 14 --------------
 arch/nios2/boot/dts/Makefile |  2 ++
 arch/nios2/boot/linked_dtb.S | 19 -------------------
 4 files changed, 4 insertions(+), 37 deletions(-)
 delete mode 100644 arch/nios2/boot/linked_dtb.S

diff --git a/arch/nios2/Makefile b/arch/nios2/Makefile
index 50eece1c6adb..db2e78fe65c7 100644
--- a/arch/nios2/Makefile
+++ b/arch/nios2/Makefile
@@ -49,16 +49,14 @@ BOOT_TARGETS = vmImage zImage
 PHONY += $(BOOT_TARGETS) install
 KBUILD_IMAGE := $(nios2-boot)/vmImage
 
-ifneq ($(CONFIG_NIOS2_DTB_SOURCE),"")
-	core-y	+= $(nios2-boot)/
-endif
+core-y	+= $(nios2-boot)/dts/
 
 all: vmImage
 
 archclean:
 	$(Q)$(MAKE) $(clean)=$(nios2-boot)
 
-%.dtb: | scripts
+%.dtb %.dtb.S %.dtb.o: | scripts
 	$(Q)$(MAKE) $(build)=$(nios2-boot)/dts $(nios2-boot)/dts/$@
 
 dtbs:
diff --git a/arch/nios2/boot/Makefile b/arch/nios2/boot/Makefile
index 007586094dde..0b48f1bf086d 100644
--- a/arch/nios2/boot/Makefile
+++ b/arch/nios2/boot/Makefile
@@ -31,20 +31,6 @@ $(obj)/zImage: $(obj)/compressed/vmlinux FORCE
 $(obj)/compressed/vmlinux: $(obj)/vmlinux.gz FORCE
 	$(Q)$(MAKE) $(build)=$(obj)/compressed $@
 
-# Rule to build device tree blobs
-DTB_SRC := $(patsubst "%",%,$(CONFIG_NIOS2_DTB_SOURCE))
-
-# Make sure the generated dtb gets removed during clean
-extra-$(CONFIG_NIOS2_DTB_SOURCE_BOOL) += system.dtb
-
-$(obj)/system.dtb: $(DTB_SRC) FORCE
-	$(call cmd,dtc)
-
-# Ensure system.dtb exists
-$(obj)/linked_dtb.o: $(obj)/system.dtb
-
-obj-$(CONFIG_NIOS2_DTB_SOURCE_BOOL) += linked_dtb.o
-
 targets += $(dtb-y)
 
 $(obj)/dtbs: $(addprefix $(obj)/, $(dtb-y))
diff --git a/arch/nios2/boot/dts/Makefile b/arch/nios2/boot/dts/Makefile
index f66554cd5c45..f6358e395b25 100644
--- a/arch/nios2/boot/dts/Makefile
+++ b/arch/nios2/boot/dts/Makefile
@@ -1 +1,3 @@
 # SPDX-License-Identifier: GPL-2.0
+
+obj-y := $(patsubst "%.dts",%.dtb.o,$(CONFIG_NIOS2_DTB_SOURCE))
diff --git a/arch/nios2/boot/linked_dtb.S b/arch/nios2/boot/linked_dtb.S
deleted file mode 100644
index 071f922db338..000000000000
--- a/arch/nios2/boot/linked_dtb.S
+++ /dev/null
@@ -1,19 +0,0 @@
-/*
- * Copyright (C) 2011 Thomas Chou <thomas@wytron.com.tw>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- */
-.section .dtb.init.rodata,"a"
-.incbin "arch/nios2/boot/system.dtb"
-- 
2.17.1


^ permalink raw reply related	[flat|nested] 11+ messages in thread
* [PATCH v4 4/9] nios2: fix building all dtbs
  2018-10-01 15:25 [PATCH v4 0/9] Devicetree build consolidation Rob Herring
                   ` (2 preceding siblings ...)
  2018-10-01 15:25 ` [PATCH v4 3/9] nios2: use common rules to build built-in dtb Rob Herring
@ 2018-10-01 15:25 ` Rob Herring
  2018-10-01 15:25 ` [PATCH v4 5/9] c6x: use common built-in dtb support Rob Herring
                   ` (4 subsequent siblings)
  8 siblings, 0 replies; 11+ messages in thread
From: Rob Herring @ 2018-10-01 15:25 UTC (permalink / raw)
  To: devicetree, linux-kernel, Masahiro Yamada, Frank Rowand
  Cc: Ley Foon Tan, nios2-dev

nios2 has a 'dtbs' target, but nothing is added to 'dtb-*' targets and
no dtbs were getting built. This enables building all the dts files in
arch/nios2/boot/dts/ when COMPILE_TEST and OF_ALL_DTBS are enabled.

Cc: Ley Foon Tan <lftan@altera.com>
Cc: nios2-dev@lists.rocketboards.org
Signed-off-by: Rob Herring <robh@kernel.org>
---
 arch/nios2/boot/dts/Makefile | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/arch/nios2/boot/dts/Makefile b/arch/nios2/boot/dts/Makefile
index f6358e395b25..a91a0b09be63 100644
--- a/arch/nios2/boot/dts/Makefile
+++ b/arch/nios2/boot/dts/Makefile
@@ -1,3 +1,6 @@
 # SPDX-License-Identifier: GPL-2.0
 
 obj-y := $(patsubst "%.dts",%.dtb.o,$(CONFIG_NIOS2_DTB_SOURCE))
+
+dtstree		:= $(srctree)/$(src)
+dtb-$(CONFIG_OF_ALL_DTBS) := $(patsubst $(dtstree)/%.dts,%.dtb, $(wildcard $(dtstree)/*.dts))
-- 
2.17.1


^ permalink raw reply related	[flat|nested] 11+ messages in thread
* [PATCH v4 5/9] c6x: use common built-in dtb support
  2018-10-01 15:25 [PATCH v4 0/9] Devicetree build consolidation Rob Herring
                   ` (3 preceding siblings ...)
  2018-10-01 15:25 ` [PATCH v4 4/9] nios2: fix building all dtbs Rob Herring
@ 2018-10-01 15:25 ` Rob Herring
  2018-10-01 15:25 ` [PATCH v4 6/9] kbuild: consolidate Devicetree dtb build rules Rob Herring
                   ` (3 subsequent siblings)
  8 siblings, 0 replies; 11+ messages in thread
From: Rob Herring @ 2018-10-01 15:25 UTC (permalink / raw)
  To: devicetree, linux-kernel, Masahiro Yamada, Frank Rowand
  Cc: Mark Salter, Aurelien Jacquiot, linux-c6x-dev

Using the common build support for built-in dtb files just requires
adding a .dtb.o target to obj-y.

The dtb now needs to be copied when unflattened because an init section
is used now.

Cc: Mark Salter <msalter@redhat.com>
Cc: Aurelien Jacquiot <jacquiot.aurelien@gmail.com>
Cc: linux-c6x-dev@linux-c6x.org
Signed-off-by: Rob Herring <robh@kernel.org>
---
 arch/c6x/boot/dts/Makefile      | 11 +----------
 arch/c6x/boot/dts/linked_dtb.S  |  2 --
 arch/c6x/include/asm/sections.h |  1 -
 arch/c6x/kernel/setup.c         |  4 ++--
 arch/c6x/kernel/vmlinux.lds.S   | 10 ----------
 5 files changed, 3 insertions(+), 25 deletions(-)
 delete mode 100644 arch/c6x/boot/dts/linked_dtb.S

diff --git a/arch/c6x/boot/dts/Makefile b/arch/c6x/boot/dts/Makefile
index b212d278ebc4..fd937f781d16 100644
--- a/arch/c6x/boot/dts/Makefile
+++ b/arch/c6x/boot/dts/Makefile
@@ -6,14 +6,5 @@
 DTC_FLAGS ?= -p 1024
 
 ifneq ($(DTB),)
-obj-y += linked_dtb.o
+obj-y += $(DTB).dtb.o
 endif
-
-quiet_cmd_cp = CP      $< $@$2
-	cmd_cp = cat $< >$@$2 || (rm -f $@ && echo false)
-
-# Generate builtin.dtb from $(DTB).dtb
-$(obj)/builtin.dtb: $(obj)/$(DTB).dtb
-	$(call if_changed,cp)
-
-$(obj)/linked_dtb.o: $(obj)/builtin.dtb
diff --git a/arch/c6x/boot/dts/linked_dtb.S b/arch/c6x/boot/dts/linked_dtb.S
deleted file mode 100644
index cf347f1d16ce..000000000000
--- a/arch/c6x/boot/dts/linked_dtb.S
+++ /dev/null
@@ -1,2 +0,0 @@
-.section __fdt_blob,"a"
-.incbin "arch/c6x/boot/dts/builtin.dtb"
diff --git a/arch/c6x/include/asm/sections.h b/arch/c6x/include/asm/sections.h
index d6c591ab5b7e..dc2f15eb3bde 100644
--- a/arch/c6x/include/asm/sections.h
+++ b/arch/c6x/include/asm/sections.h
@@ -8,6 +8,5 @@ extern char _vectors_start[];
 extern char _vectors_end[];
 
 extern char _data_lma[];
-extern char _fdt_start[], _fdt_end[];
 
 #endif /* _ASM_C6X_SECTIONS_H */
diff --git a/arch/c6x/kernel/setup.c b/arch/c6x/kernel/setup.c
index 786e36e2f61d..509c5f086496 100644
--- a/arch/c6x/kernel/setup.c
+++ b/arch/c6x/kernel/setup.c
@@ -270,7 +270,7 @@ int __init c6x_add_memory(phys_addr_t start, unsigned long size)
 notrace void __init machine_init(unsigned long dt_ptr)
 {
 	void *dtb = __va(dt_ptr);
-	void *fdt = _fdt_start;
+	void *fdt = __dtb_start;
 
 	/* interrupts must be masked */
 	set_creg(IER, 2);
@@ -363,7 +363,7 @@ void __init setup_arch(char **cmdline_p)
 					 memory_end >> PAGE_SHIFT);
 	memblock_reserve(memory_start, bootmap_size);
 
-	unflatten_device_tree();
+	unflatten_and_copy_device_tree();
 
 	c6x_cache_init();
 
diff --git a/arch/c6x/kernel/vmlinux.lds.S b/arch/c6x/kernel/vmlinux.lds.S
index 1fba5b421eee..584bab2bace6 100644
--- a/arch/c6x/kernel/vmlinux.lds.S
+++ b/arch/c6x/kernel/vmlinux.lds.S
@@ -90,16 +90,6 @@ SECTIONS
 		*(.switch)
 	}
 
-	. = ALIGN (8) ;
-	__fdt_blob : AT(ADDR(__fdt_blob) - LOAD_OFFSET)
-	{
-		_fdt_start = . ;	/* place for fdt blob */
-		*(__fdt_blob) ;		/* Any link-placed DTB */
-		BYTE(0);		/* section always has contents */
-	        . = _fdt_start + 0x4000;	/* Pad up to 16kbyte */
-		_fdt_end = . ;
-	}
-
 	_etext = .;
 
 	/*
-- 
2.17.1


^ permalink raw reply related	[flat|nested] 11+ messages in thread
* [PATCH v4 6/9] kbuild: consolidate Devicetree dtb build rules
  2018-10-01 15:25 [PATCH v4 0/9] Devicetree build consolidation Rob Herring
                   ` (4 preceding siblings ...)
  2018-10-01 15:25 ` [PATCH v4 5/9] c6x: use common built-in dtb support Rob Herring
@ 2018-10-01 15:25 ` Rob Herring
  2018-10-01 20:34   ` Masahiro Yamada
  2018-10-01 15:25 ` [PATCH v4 7/9] powerpc: enable building all dtbs Rob Herring
                   ` (2 subsequent siblings)
  8 siblings, 1 reply; 11+ messages in thread
From: Rob Herring @ 2018-10-01 15:25 UTC (permalink / raw)
  To: devicetree, linux-kernel, Masahiro Yamada, Frank Rowand
  Cc: Michal Marek, Vineet Gupta, Russell King, Catalin Marinas,
	Yoshinori Sato, Michal Simek, Ralf Baechle, James Hogan,
	Benjamin Herrenschmidt, Paul Mackerras, Michael Ellerman,
	Chris Zankel, Max Filippov, linux-kbuild, linux-snps-arc,
	linux-arm-kernel, uclinux-h8-devel, linux-mips, nios2-dev,
	linuxppc-dev, linux-xtensa, Will Deacon, Paul Burton,
	Ley Foon Tan

There is nothing arch specific about building dtb files other than their
location under /arch/*/boot/dts/. Keeping each arch aligned is a pain.
The dependencies and supported targets are all slightly different.
Also, a cross-compiler for each arch is needed, but really the host
compiler preprocessor is perfectly fine for building dtbs. Move the
build rules to a common location and remove the arch specific ones. This
is done in a single step to avoid warnings about overriding rules.

The build dependencies had been a mixture of 'scripts' and/or 'prepare'.
These pull in several dependencies some of which need a target compiler
(specifically devicetable-offsets.h) and aren't needed to build dtbs.
All that is really needed is dtc, so adjust the dependencies to only be
dtc.

This change enables support 'dtbs_install' on some arches which were
missing the target.

Acked-by: Will Deacon <will.deacon@arm.com>
Acked-by: Paul Burton <paul.burton@mips.com>
Acked-by: Ley Foon Tan <ley.foon.tan@intel.com>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Michal Marek <michal.lkml@markovi.net>
Cc: Vineet Gupta <vgupta@synopsys.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: James Hogan <jhogan@kernel.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Chris Zankel <chris@zankel.net>
Cc: Max Filippov <jcmvbkbc@gmail.com>
Cc: linux-kbuild@vger.kernel.org
Cc: linux-snps-arc@lists.infradead.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: uclinux-h8-devel@lists.sourceforge.jp
Cc: linux-mips@linux-mips.org
Cc: nios2-dev@lists.rocketboards.org
Cc: linuxppc-dev@lists.ozlabs.org
Cc: linux-xtensa@linux-xtensa.org
Signed-off-by: Rob Herring <robh@kernel.org>
---
v4:
 - Make dtbs and %.dtb rules depend on arch/$ARCH/boot/dts path rather than
   CONFIG_OF_EARLY_FLATTREE
 - Fix install path missing kernel version for dtbs_install
 - Fix "make CONFIG_OF_ALL_DTBS=y" for arches like ARM which selectively
   enable CONFIG_OF (and therefore dtc)


 Makefile                          | 37 ++++++++++++++++++++++++++++++-
 arch/arc/Makefile                 |  6 -----
 arch/arm/Makefile                 | 20 +----------------
 arch/arm64/Makefile               | 17 +-------------
 arch/c6x/Makefile                 |  2 --
 arch/h8300/Makefile               | 11 +--------
 arch/microblaze/Makefile          |  4 +---
 arch/microblaze/boot/dts/Makefile |  2 ++
 arch/mips/Makefile                | 15 +------------
 arch/nds32/Makefile               |  2 +-
 arch/nios2/Makefile               |  7 ------
 arch/nios2/boot/Makefile          |  4 ----
 arch/powerpc/Makefile             |  3 ---
 arch/xtensa/Makefile              | 12 +---------
 scripts/Makefile                  |  3 +--
 scripts/Makefile.lib              |  2 +-
 scripts/dtc/Makefile              |  2 +-
 17 files changed, 48 insertions(+), 101 deletions(-)

diff --git a/Makefile b/Makefile
index 6c3da3e10f07..251875470c5b 100644
--- a/Makefile
+++ b/Makefile
@@ -1061,7 +1061,7 @@ include/config/kernel.release: $(srctree)/Makefile FORCE
 # Carefully list dependencies so we do not try to build scripts twice
 # in parallel
 PHONY += scripts
-scripts: scripts_basic asm-generic gcc-plugins $(autoksyms_h)
+scripts: scripts_basic scripts_dtc asm-generic gcc-plugins $(autoksyms_h)
 	$(Q)$(MAKE) $(build)=$(@)

 # Things we need to do before we recursively start building the kernel
@@ -1205,6 +1205,35 @@ kselftest-merge:
 		$(srctree)/tools/testing/selftests/*/config
 	+$(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig

+# ---------------------------------------------------------------------------
+# Devicetree files
+
+ifneq ($(wildcard $(srctree)/arch/$(SRCARCH)/boot/dts/),)
+dtstree := arch/$(SRCARCH)/boot/dts
+endif
+
+ifneq ($(dtstree),)
+
+%.dtb: prepare3 scripts_dtc
+	$(Q)$(MAKE) $(build)=$(dtstree) $(dtstree)/$@
+
+PHONY += dtbs dtbs_install
+dtbs: prepare3 scripts_dtc
+	$(Q)$(MAKE) $(build)=$(dtstree)
+
+dtbs_install:
+	$(Q)$(MAKE) $(dtbinst)=$(dtstree)
+
+ifdef CONFIG_OF_EARLY_FLATTREE
+all: dtbs
+endif
+
+endif
+
+PHONY += scripts_dtc
+scripts_dtc: scripts_basic
+	$(Q)$(MAKE) $(build)=scripts/dtc
+
 # ---------------------------------------------------------------------------
 # Modules

@@ -1414,6 +1443,12 @@ help:
 	@echo  '  kselftest-merge - Merge all the config dependencies of kselftest to existing'
 	@echo  '                    .config.'
 	@echo  ''
+	@$(if $(dtstree), \
+		echo 'Devicetree:'; \
+		echo '* dtbs            - Build device tree blobs for enabled boards'; \
+		echo '  dtbs_install    - Install dtbs to $(INSTALL_DTBS_PATH)'; \
+		echo '')
+
 	@echo 'Userspace tools targets:'
 	@echo '  use "make tools/help"'
 	@echo '  or  "cd tools; make help"'
diff --git a/arch/arc/Makefile b/arch/arc/Makefile
index 99cce77ab98f..caece8866080 100644
--- a/arch/arc/Makefile
+++ b/arch/arc/Makefile
@@ -124,11 +124,5 @@ boot_targets += uImage uImage.bin uImage.gz
 $(boot_targets): vmlinux
 	$(Q)$(MAKE) $(build)=$(boot) $(boot)/$@

-%.dtb %.dtb.S %.dtb.o: scripts
-	$(Q)$(MAKE) $(build)=$(boot)/dts $(boot)/dts/$@
-
-dtbs: scripts
-	$(Q)$(MAKE) $(build)=$(boot)/dts
-
 archclean:
 	$(Q)$(MAKE) $(clean)=$(boot)
diff --git a/arch/arm/Makefile b/arch/arm/Makefile
index d1516f85f25d..161c2df6567e 100644
--- a/arch/arm/Makefile
+++ b/arch/arm/Makefile
@@ -307,12 +307,7 @@ else
 KBUILD_IMAGE := $(boot)/zImage
 endif

-# Build the DT binary blobs if we have OF configured
-ifeq ($(CONFIG_USE_OF),y)
-KBUILD_DTBS := dtbs
-endif
-
-all:	$(notdir $(KBUILD_IMAGE)) $(KBUILD_DTBS)
+all:	$(notdir $(KBUILD_IMAGE))


 archheaders:
@@ -339,17 +334,6 @@ $(BOOT_TARGETS): vmlinux
 $(INSTALL_TARGETS):
 	$(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $@

-%.dtb: | scripts
-	$(Q)$(MAKE) $(build)=$(boot)/dts MACHINE=$(MACHINE) $(boot)/dts/$@
-
-PHONY += dtbs dtbs_install
-
-dtbs: prepare scripts
-	$(Q)$(MAKE) $(build)=$(boot)/dts
-
-dtbs_install:
-	$(Q)$(MAKE) $(dtbinst)=$(boot)/dts
-
 PHONY += vdso_install
 vdso_install:
 ifeq ($(CONFIG_VDSO),y)
@@ -371,8 +355,6 @@ define archhelp
   echo  '  uImage        - U-Boot wrapped zImage'
   echo  '  bootpImage    - Combined zImage and initial RAM disk'
   echo  '                  (supply initrd image via make variable INITRD=<path>)'
-  echo  '* dtbs          - Build device tree blobs for enabled boards'
-  echo  '  dtbs_install  - Install dtbs to $(INSTALL_DTBS_PATH)'
   echo  '  install       - Install uncompressed kernel'
   echo  '  zinstall      - Install compressed kernel'
   echo  '  uinstall      - Install U-Boot wrapped compressed kernel'
diff --git a/arch/arm64/Makefile b/arch/arm64/Makefile
index 106039d25e2f..b4e994cd3a42 100644
--- a/arch/arm64/Makefile
+++ b/arch/arm64/Makefile
@@ -113,9 +113,8 @@ core-$(CONFIG_EFI_STUB) += $(objtree)/drivers/firmware/efi/libstub/lib.a
 # Default target when executing plain make
 boot		:= arch/arm64/boot
 KBUILD_IMAGE	:= $(boot)/Image.gz
-KBUILD_DTBS	:= dtbs

-all:	Image.gz $(KBUILD_DTBS)
+all:	Image.gz


 Image: vmlinux
@@ -127,17 +126,6 @@ Image.%: Image
 zinstall install:
 	$(Q)$(MAKE) $(build)=$(boot) $@

-%.dtb: scripts
-	$(Q)$(MAKE) $(build)=$(boot)/dts $(boot)/dts/$@
-
-PHONY += dtbs dtbs_install
-
-dtbs: prepare scripts
-	$(Q)$(MAKE) $(build)=$(boot)/dts
-
-dtbs_install:
-	$(Q)$(MAKE) $(dtbinst)=$(boot)/dts
-
 PHONY += vdso_install
 vdso_install:
 	$(Q)$(MAKE) $(build)=arch/arm64/kernel/vdso $@
@@ -145,7 +133,6 @@ vdso_install:
 # We use MRPROPER_FILES and CLEAN_FILES now
 archclean:
 	$(Q)$(MAKE) $(clean)=$(boot)
-	$(Q)$(MAKE) $(clean)=$(boot)/dts

 # We need to generate vdso-offsets.h before compiling certain files in kernel/.
 # In order to do that, we should use the archprepare target, but we can't since
@@ -160,8 +147,6 @@ vdso_prepare: prepare0
 define archhelp
   echo  '* Image.gz      - Compressed kernel image (arch/$(ARCH)/boot/Image.gz)'
   echo  '  Image         - Uncompressed kernel image (arch/$(ARCH)/boot/Image)'
-  echo  '* dtbs          - Build device tree blobs for enabled boards'
-  echo  '  dtbs_install  - Install dtbs to $(INSTALL_DTBS_PATH)'
   echo  '  install       - Install uncompressed kernel'
   echo  '  zinstall      - Install compressed kernel'
   echo  '                  Install using (your) ~/bin/installkernel or'
diff --git a/arch/c6x/Makefile b/arch/c6x/Makefile
index 3fe8a948e94c..b7aa854f7008 100644
--- a/arch/c6x/Makefile
+++ b/arch/c6x/Makefile
@@ -40,9 +40,7 @@ boot := arch/$(ARCH)/boot
 DTB:=$(subst dtbImage.,,$(filter dtbImage.%, $(MAKECMDGOALS)))
 export DTB

-ifneq ($(DTB),)
 core-y	+= $(boot)/dts/
-endif

 # With make 3.82 we cannot mix normal and wildcard targets

diff --git a/arch/h8300/Makefile b/arch/h8300/Makefile
index 58634e6bae92..4003ddc616e1 100644
--- a/arch/h8300/Makefile
+++ b/arch/h8300/Makefile
@@ -31,21 +31,12 @@ CROSS_COMPILE := h8300-unknown-linux-
 endif

 core-y	+= arch/$(ARCH)/kernel/ arch/$(ARCH)/mm/
-ifneq '$(CONFIG_H8300_BUILTIN_DTB)' '""'
-core-y += arch/h8300/boot/dts/
-endif
+core-y	+= arch/$(ARCH)/boot/dts/

 libs-y	+= arch/$(ARCH)/lib/

 boot := arch/h8300/boot

-%.dtb %.dtb.S %.dtb.o: | scripts
-	$(Q)$(MAKE) $(build)=arch/h8300/boot/dts arch/h8300/boot/dts/$@
-
-PHONY += dtbs
-dtbs: scripts
-	$(Q)$(MAKE) $(build)=arch/h8300/boot/dts
-
 archmrproper:

 archclean:
diff --git a/arch/microblaze/Makefile b/arch/microblaze/Makefile
index 4f3ab5707265..0823d291fbeb 100644
--- a/arch/microblaze/Makefile
+++ b/arch/microblaze/Makefile
@@ -65,9 +65,7 @@ boot := arch/microblaze/boot
 # Are we making a simpleImage.<boardname> target? If so, crack out the boardname
 DTB:=$(subst simpleImage.,,$(filter simpleImage.%, $(MAKECMDGOALS)))

-ifneq ($(DTB),)
-	core-y	+= $(boot)/dts/
-endif
+core-y	+= $(boot)/dts/

 # defines filename extension depending memory management type
 ifeq ($(CONFIG_MMU),)
diff --git a/arch/microblaze/boot/dts/Makefile b/arch/microblaze/boot/dts/Makefile
index 1f77913d404d..fe9af267f598 100644
--- a/arch/microblaze/boot/dts/Makefile
+++ b/arch/microblaze/boot/dts/Makefile
@@ -1,6 +1,7 @@
 # SPDX-License-Identifier: GPL-2.0
 #

+ifneq ($(DTB),)
 obj-y += linked_dtb.o

 # Ensure system.dtb exists
@@ -11,6 +12,7 @@ ifneq ($(DTB),system)
 $(obj)/system.dtb: $(obj)/$(DTB).dtb
 	$(call if_changed,cp)
 endif
+endif

 quiet_cmd_cp = CP      $< $@$2
 	cmd_cp = cat $< >$@$2 || (rm -f $@ && echo false)
diff --git a/arch/mips/Makefile b/arch/mips/Makefile
index d74b3742fa5d..d43eeaa6d75b 100644
--- a/arch/mips/Makefile
+++ b/arch/mips/Makefile
@@ -407,18 +407,7 @@ endif
 CLEAN_FILES += vmlinux.32 vmlinux.64

 # device-trees
-core-$(CONFIG_BUILTIN_DTB) += arch/mips/boot/dts/
-
-%.dtb %.dtb.S %.dtb.o: | scripts
-	$(Q)$(MAKE) $(build)=arch/mips/boot/dts arch/mips/boot/dts/$@
-
-PHONY += dtbs
-dtbs: scripts
-	$(Q)$(MAKE) $(build)=arch/mips/boot/dts
-
-PHONY += dtbs_install
-dtbs_install:
-	$(Q)$(MAKE) $(dtbinst)=arch/mips/boot/dts
+core-y += arch/mips/boot/dts/

 archprepare:
 ifdef CONFIG_MIPS32_N32
@@ -461,8 +450,6 @@ define archhelp
 	echo '  uImage.lzma          - U-Boot image (lzma)'
 	echo '  uImage.lzo           - U-Boot image (lzo)'
 	echo '  uzImage.bin          - U-Boot image (self-extracting)'
-	echo '  dtbs                 - Device-tree blobs for enabled boards'
-	echo '  dtbs_install         - Install dtbs to $(INSTALL_DTBS_PATH)'
 	echo
 	echo '  These will be default as appropriate for a configured platform.'
 	echo
diff --git a/arch/nds32/Makefile b/arch/nds32/Makefile
index 3509fac10491..9f525ed70049 100644
--- a/arch/nds32/Makefile
+++ b/arch/nds32/Makefile
@@ -47,7 +47,7 @@ CHECKFLAGS      += -D__NDS32_EB__
 endif

 boot := arch/nds32/boot
-core-$(BUILTIN_DTB) += $(boot)/dts/
+core-y += $(boot)/dts/

 .PHONY: FORCE

diff --git a/arch/nios2/Makefile b/arch/nios2/Makefile
index db2e78fe65c7..52c03e60b114 100644
--- a/arch/nios2/Makefile
+++ b/arch/nios2/Makefile
@@ -56,12 +56,6 @@ all: vmImage
 archclean:
 	$(Q)$(MAKE) $(clean)=$(nios2-boot)

-%.dtb %.dtb.S %.dtb.o: | scripts
-	$(Q)$(MAKE) $(build)=$(nios2-boot)/dts $(nios2-boot)/dts/$@
-
-dtbs:
-	$(Q)$(MAKE) $(build)=$(nios2-boot)/dts
-
 $(BOOT_TARGETS): vmlinux
 	$(Q)$(MAKE) $(build)=$(nios2-boot) $(nios2-boot)/$@

@@ -74,5 +68,4 @@ define archhelp
   echo  '                     (your) ~/bin/$(INSTALLKERNEL) or'
   echo  '                     (distribution) /sbin/$(INSTALLKERNEL) or'
   echo  '                     install to $$(INSTALL_PATH)'
-  echo  '  dtbs            - Build device tree blobs for enabled boards'
 endef
diff --git a/arch/nios2/boot/Makefile b/arch/nios2/boot/Makefile
index 0b48f1bf086d..37dfc7e584bc 100644
--- a/arch/nios2/boot/Makefile
+++ b/arch/nios2/boot/Makefile
@@ -31,9 +31,5 @@ $(obj)/zImage: $(obj)/compressed/vmlinux FORCE
 $(obj)/compressed/vmlinux: $(obj)/vmlinux.gz FORCE
 	$(Q)$(MAKE) $(build)=$(obj)/compressed $@

-targets += $(dtb-y)
-
-$(obj)/dtbs: $(addprefix $(obj)/, $(dtb-y))
-
 install:
 	sh $(srctree)/$(src)/install.sh $(KERNELRELEASE) $(BOOTIMAGE) System.map "$(INSTALL_PATH)"
diff --git a/arch/powerpc/Makefile b/arch/powerpc/Makefile
index 53ea887eb34e..42f225f6ec93 100644
--- a/arch/powerpc/Makefile
+++ b/arch/powerpc/Makefile
@@ -293,9 +293,6 @@ $(BOOT_TARGETS2): vmlinux
 bootwrapper_install:
 	$(Q)$(MAKE) $(build)=$(boot) $(patsubst %,$(boot)/%,$@)

-%.dtb: scripts
-	$(Q)$(MAKE) $(build)=$(boot)/dts $(patsubst %,$(boot)/dts/%,$@)
-
 # Used to create 'merged defconfigs'
 # To use it $(call) it with the first argument as the base defconfig
 # and the second argument as a space separated list of .config files to merge,
diff --git a/arch/xtensa/Makefile b/arch/xtensa/Makefile
index d67e30faff9c..be060dfb1cc3 100644
--- a/arch/xtensa/Makefile
+++ b/arch/xtensa/Makefile
@@ -80,28 +80,18 @@ LIBGCC := $(shell $(CC) $(KBUILD_CFLAGS) -print-libgcc-file-name)
 head-y		:= arch/xtensa/kernel/head.o
 core-y		+= arch/xtensa/kernel/ arch/xtensa/mm/
 core-y		+= $(buildvar) $(buildplf)
+core-y 		+= arch/xtensa/boot/dts/

 libs-y		+= arch/xtensa/lib/ $(LIBGCC)
 drivers-$(CONFIG_OPROFILE)	+= arch/xtensa/oprofile/

-ifneq ($(CONFIG_BUILTIN_DTB),"")
-core-$(CONFIG_OF) += arch/xtensa/boot/dts/
-endif
-
 boot		:= arch/xtensa/boot

 all Image zImage uImage: vmlinux
 	$(Q)$(MAKE) $(build)=$(boot) $@

-%.dtb:
-	$(Q)$(MAKE) $(build)=$(boot)/dts $(boot)/dts/$@
-
-dtbs: scripts
-	$(Q)$(MAKE) $(build)=$(boot)/dts
-
 define archhelp
   @echo '* Image       - Kernel ELF image with reset vector'
   @echo '* zImage      - Compressed kernel image (arch/xtensa/boot/images/zImage.*)'
   @echo '* uImage      - U-Boot wrapped image'
-  @echo '  dtbs        - Build device tree blobs for enabled boards'
 endef
diff --git a/scripts/Makefile b/scripts/Makefile
index 61affa300d25..ece52ff20171 100644
--- a/scripts/Makefile
+++ b/scripts/Makefile
@@ -39,8 +39,7 @@ build_unifdef: $(obj)/unifdef
 subdir-$(CONFIG_MODVERSIONS) += genksyms
 subdir-y                     += mod
 subdir-$(CONFIG_SECURITY_SELINUX) += selinux
-subdir-$(CONFIG_DTC)         += dtc
 subdir-$(CONFIG_GDB_SCRIPTS) += gdb

 # Let clean descend into subdirs
-subdir-	+= basic kconfig package gcc-plugins
+subdir-	+= basic dtc kconfig package gcc-plugins
diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib
index 61e596650ed3..8fe4468f9bda 100644
--- a/scripts/Makefile.lib
+++ b/scripts/Makefile.lib
@@ -283,7 +283,7 @@ $(obj)/%.dtb.S: $(obj)/%.dtb FORCE

 quiet_cmd_dtc = DTC     $@
 cmd_dtc = mkdir -p $(dir ${dtc-tmp}) ; \
-	$(CPP) $(dtc_cpp_flags) -x assembler-with-cpp -o $(dtc-tmp) $< ; \
+	$(HOSTCC) -E $(dtc_cpp_flags) -x assembler-with-cpp -o $(dtc-tmp) $< ; \
 	$(DTC) -O dtb -o $@ -b 0 \
 		$(addprefix -i,$(dir $<) $(DTC_INCLUDE)) $(DTC_FLAGS) \
 		-d $(depfile).dtc.tmp $(dtc-tmp) ; \
diff --git a/scripts/dtc/Makefile b/scripts/dtc/Makefile
index 1c943e03eaf2..e535b457babb 100644
--- a/scripts/dtc/Makefile
+++ b/scripts/dtc/Makefile
@@ -1,7 +1,7 @@
 # SPDX-License-Identifier: GPL-2.0
 # scripts/dtc makefile

-hostprogs-y	:= dtc
+hostprogs-$(CONFIG_DTC) := dtc
 always		:= $(hostprogs-y)

 dtc-objs	:= dtc.o flattree.o fstree.o data.o livetree.o treesource.o \
--
2.17.1

^ permalink raw reply related	[flat|nested] 11+ messages in thread
* [PATCH v4 7/9] powerpc: enable building all dtbs
  2018-10-01 15:25 [PATCH v4 0/9] Devicetree build consolidation Rob Herring
                   ` (5 preceding siblings ...)
  2018-10-01 15:25 ` [PATCH v4 6/9] kbuild: consolidate Devicetree dtb build rules Rob Herring
@ 2018-10-01 15:25 ` Rob Herring
  2018-10-01 15:25 ` [PATCH v4 8/9] c6x: " Rob Herring
  2018-10-01 15:25 ` [PATCH v4 9/9] microblaze: " Rob Herring
  8 siblings, 0 replies; 11+ messages in thread
From: Rob Herring @ 2018-10-01 15:25 UTC (permalink / raw)
  To: devicetree, linux-kernel, Masahiro Yamada, Frank Rowand
  Cc: Benjamin Herrenschmidt, Paul Mackerras, Michael Ellerman, linuxppc-dev

Enable the 'dtbs' target for powerpc. This allows building all the dts
files in arch/powerpc/boot/dts/ when COMPILE_TEST and OF_ALL_DTBS are
enabled.

Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: linuxppc-dev@lists.ozlabs.org
Signed-off-by: Rob Herring <robh@kernel.org>
---
 arch/powerpc/boot/dts/Makefile     | 5 +++++
 arch/powerpc/boot/dts/fsl/Makefile | 4 ++++
 2 files changed, 9 insertions(+)
 create mode 100644 arch/powerpc/boot/dts/fsl/Makefile

diff --git a/arch/powerpc/boot/dts/Makefile b/arch/powerpc/boot/dts/Makefile
index f66554cd5c45..fb335d05aae8 100644
--- a/arch/powerpc/boot/dts/Makefile
+++ b/arch/powerpc/boot/dts/Makefile
@@ -1 +1,6 @@
 # SPDX-License-Identifier: GPL-2.0
+
+subdir-y += fsl
+
+dtstree		:= $(srctree)/$(src)
+dtb-$(CONFIG_OF_ALL_DTBS) := $(patsubst $(dtstree)/%.dts,%.dtb, $(wildcard $(dtstree)/*.dts))
diff --git a/arch/powerpc/boot/dts/fsl/Makefile b/arch/powerpc/boot/dts/fsl/Makefile
new file mode 100644
index 000000000000..3bae982641e9
--- /dev/null
+++ b/arch/powerpc/boot/dts/fsl/Makefile
@@ -0,0 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0
+
+dtstree		:= $(srctree)/$(src)
+dtb-$(CONFIG_OF_ALL_DTBS) := $(patsubst $(dtstree)/%.dts,%.dtb, $(wildcard $(dtstree)/*.dts))
-- 
2.17.1


^ permalink raw reply related	[flat|nested] 11+ messages in thread
* [PATCH v4 8/9] c6x: enable building all dtbs
  2018-10-01 15:25 [PATCH v4 0/9] Devicetree build consolidation Rob Herring
                   ` (6 preceding siblings ...)
  2018-10-01 15:25 ` [PATCH v4 7/9] powerpc: enable building all dtbs Rob Herring
@ 2018-10-01 15:25 ` Rob Herring
  2018-10-01 15:25 ` [PATCH v4 9/9] microblaze: " Rob Herring
  8 siblings, 0 replies; 11+ messages in thread
From: Rob Herring @ 2018-10-01 15:25 UTC (permalink / raw)
  To: devicetree, linux-kernel, Masahiro Yamada, Frank Rowand
  Cc: Mark Salter, Aurelien Jacquiot, linux-c6x-dev

Enable the 'dtbs' target for c6x. This allows building all the dts
files in arch/c6x/boot/dts/ for enabled platforms or when
COMPILE_TEST and OF_ALL_DTBS are enabled.

Cc: Mark Salter <msalter@redhat.com>
Cc: Aurelien Jacquiot <jacquiot.aurelien@gmail.com>
Cc: linux-c6x-dev@linux-c6x.org
Signed-off-by: Rob Herring <robh@kernel.org>
---
 arch/c6x/boot/dts/Makefile | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/arch/c6x/boot/dts/Makefile b/arch/c6x/boot/dts/Makefile
index fd937f781d16..f438285c3640 100644
--- a/arch/c6x/boot/dts/Makefile
+++ b/arch/c6x/boot/dts/Makefile
@@ -5,6 +5,12 @@
 
 DTC_FLAGS ?= -p 1024
 
+dtb-$(CONFIG_SOC_TMS320C6455) += dsk6455.dtb
+dtb-$(CONFIG_SOC_TMS320C6457) += evmc6457.dtb
+dtb-$(CONFIG_SOC_TMS320C6472) += evmc6472.dtb
+dtb-$(CONFIG_SOC_TMS320C6474) += evmc6474.dtb
+dtb-$(CONFIG_SOC_TMS320C6678) += evmc6678.dtb
+
 ifneq ($(DTB),)
 obj-y += $(DTB).dtb.o
 endif
-- 
2.17.1


^ permalink raw reply related	[flat|nested] 11+ messages in thread
* [PATCH v4 9/9] microblaze: enable building all dtbs
  2018-10-01 15:25 [PATCH v4 0/9] Devicetree build consolidation Rob Herring
                   ` (7 preceding siblings ...)
  2018-10-01 15:25 ` [PATCH v4 8/9] c6x: " Rob Herring
@ 2018-10-01 15:25 ` Rob Herring
  8 siblings, 0 replies; 11+ messages in thread
From: Rob Herring @ 2018-10-01 15:25 UTC (permalink / raw)
  To: devicetree, linux-kernel, Masahiro Yamada, Frank Rowand; +Cc: Michal Simek

Enable the 'dtbs' target for microblaze. As microblaze only has one dts
file, always enable it.

Cc: Michal Simek <monstr@monstr.eu>
Signed-off-by: Rob Herring <robh@kernel.org>
---
 arch/microblaze/boot/dts/Makefile | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/microblaze/boot/dts/Makefile b/arch/microblaze/boot/dts/Makefile
index fe9af267f598..c7324e74f9ef 100644
--- a/arch/microblaze/boot/dts/Makefile
+++ b/arch/microblaze/boot/dts/Makefile
@@ -1,6 +1,8 @@
 # SPDX-License-Identifier: GPL-2.0
 #
 
+dtb-y := system.dtb
+
 ifneq ($(DTB),)
 obj-y += linked_dtb.o
 
-- 
2.17.1


^ permalink raw reply related	[flat|nested] 11+ messages in thread
* Re: [PATCH v4 6/9] kbuild: consolidate Devicetree dtb build rules
  2018-10-01 15:25 ` [PATCH v4 6/9] kbuild: consolidate Devicetree dtb build rules Rob Herring
@ 2018-10-01 20:34   ` Masahiro Yamada
  0 siblings, 0 replies; 11+ messages in thread
From: Masahiro Yamada @ 2018-10-01 20:34 UTC (permalink / raw)
  To: Rob Herring
  Cc: DTML, Linux Kernel Mailing List, Frank Rowand, Michal Marek,
	Vineet Gupta, Russell King, Catalin Marinas, Yoshinori Sato,
	Michal Simek, Ralf Baechle, James Hogan, Benjamin Herrenschmidt,
	Paul Mackerras, Michael Ellerman, Chris Zankel, Max Filippov,
	Linux Kbuild mailing list, arcml, linux-arm-kernel,
	moderated list:H8/300 ARCHITECTURE, Linux-MIPS, nios2-dev,
	linuxppc-dev, linux-xtensa, Will Deacon, Paul Burton,
	Ley Foon Tan

2018年10月2日(火) 0:26 Rob Herring <robh@kernel.org>:
>
> There is nothing arch specific about building dtb files other than their
> location under /arch/*/boot/dts/. Keeping each arch aligned is a pain.
> The dependencies and supported targets are all slightly different.
> Also, a cross-compiler for each arch is needed, but really the host
> compiler preprocessor is perfectly fine for building dtbs. Move the
> build rules to a common location and remove the arch specific ones. This
> is done in a single step to avoid warnings about overriding rules.
>
> The build dependencies had been a mixture of 'scripts' and/or 'prepare'.
> These pull in several dependencies some of which need a target compiler
> (specifically devicetable-offsets.h) and aren't needed to build dtbs.
> All that is really needed is dtc, so adjust the dependencies to only be
> dtc.
>
> This change enables support 'dtbs_install' on some arches which were
> missing the target.
>
> Acked-by: Will Deacon <will.deacon@arm.com>
> Acked-by: Paul Burton <paul.burton@mips.com>
> Acked-by: Ley Foon Tan <ley.foon.tan@intel.com>
> Cc: Masahiro Yamada <yamada.masahiro@socionext.com>

Please change this to

Acked-by: Masahiro Yamada <yamada.masahiro@socionext.com>


Thanks.


> Cc: Michal Marek <michal.lkml@markovi.net>
> Cc: Vineet Gupta <vgupta@synopsys.com>
> Cc: Russell King <linux@armlinux.org.uk>
> Cc: Catalin Marinas <catalin.marinas@arm.com>
> Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
> Cc: Michal Simek <monstr@monstr.eu>
> Cc: Ralf Baechle <ralf@linux-mips.org>
> Cc: James Hogan <jhogan@kernel.org>
> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
> Cc: Paul Mackerras <paulus@samba.org>
> Cc: Michael Ellerman <mpe@ellerman.id.au>
> Cc: Chris Zankel <chris@zankel.net>
> Cc: Max Filippov <jcmvbkbc@gmail.com>
> Cc: linux-kbuild@vger.kernel.org
> Cc: linux-snps-arc@lists.infradead.org
> Cc: linux-arm-kernel@lists.infradead.org
> Cc: uclinux-h8-devel@lists.sourceforge.jp
> Cc: linux-mips@linux-mips.org
> Cc: nios2-dev@lists.rocketboards.org
> Cc: linuxppc-dev@lists.ozlabs.org
> Cc: linux-xtensa@linux-xtensa.org
> Signed-off-by: Rob Herring <robh@kernel.org>
> ---
> v4:
>  - Make dtbs and %.dtb rules depend on arch/$ARCH/boot/dts path rather than
>    CONFIG_OF_EARLY_FLATTREE
>  - Fix install path missing kernel version for dtbs_install
>  - Fix "make CONFIG_OF_ALL_DTBS=y" for arches like ARM which selectively
>    enable CONFIG_OF (and therefore dtc)




-- 
Best Regards
Masahiro Yamada

^ permalink raw reply	[flat|nested] 11+ messages in thread
end of thread, other threads:[~2018-10-01 20:35 UTC | newest]

Thread overview: 11+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2018-10-01 15:25 [PATCH v4 0/9] Devicetree build consolidation Rob Herring
2018-10-01 15:25 ` [PATCH v4 1/9] powerpc: build .dtb files in dts directory Rob Herring
2018-10-01 15:25 ` [PATCH v4 2/9] nios2: " Rob Herring
2018-10-01 15:25 ` [PATCH v4 3/9] nios2: use common rules to build built-in dtb Rob Herring
2018-10-01 15:25 ` [PATCH v4 4/9] nios2: fix building all dtbs Rob Herring
2018-10-01 15:25 ` [PATCH v4 5/9] c6x: use common built-in dtb support Rob Herring
2018-10-01 15:25 ` [PATCH v4 6/9] kbuild: consolidate Devicetree dtb build rules Rob Herring
2018-10-01 20:34   ` Masahiro Yamada
2018-10-01 15:25 ` [PATCH v4 7/9] powerpc: enable building all dtbs Rob Herring
2018-10-01 15:25 ` [PATCH v4 8/9] c6x: " Rob Herring
2018-10-01 15:25 ` [PATCH v4 9/9] microblaze: " Rob Herring

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