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Message-Id: <20181005165848.3474-8-robh@kernel.org>
Date: Fri, 5 Oct 2018 11:58:19 -0500
From: Rob Herring <robh@...nel.org>
To: linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org, linuxppc-dev@...ts.ozlabs.org
Cc: Grant Likely <glikely@...retlab.ca>,
Kumar Gala <kumar.gala@...aro.org>,
Frank Rowand <frowand.list@...il.com>,
Mark Rutland <mark.rutland@....com>,
Linus Walleij <linus.walleij@...aro.org>,
Olof Johansson <olof@...om.net>, Arnd Bergmann <arnd@...db.de>,
Mark Brown <broonie@...nel.org>, Tom Rini <trini@...sulko.com>,
Pantelis Antoniou <pantelis.antoniou@...sulko.com>,
Geert Uytterhoeven <geert@...ux-m68k.org>,
Jonathan Cameron <jic23@...nel.org>,
Bjorn Andersson <bjorn.andersson@...aro.org>,
Jonathan Corbet <corbet@....net>,
Masahiro Yamada <yamada.masahiro@...ionext.com>,
Michal Marek <michal.lkml@...kovi.net>,
linux-doc@...r.kernel.org, linux-kbuild@...r.kernel.org
Subject: [PATCH 07/36] kbuild: Add support for DT binding schema checks
This adds the build infrastructure for checking DT binding schema
documents and validating dts files using the binding schema.
Check DT binding schema documents:
make dt_binding_check
Build dts files and check using DT binding schema:
make dtbs_check
Currently, the validation targets are separate from a normal build to
avoid a hard dependency on the external DT schema project and because
there are lots of warnings generated.
Cc: Jonathan Corbet <corbet@....net>
Cc: Mark Rutland <mark.rutland@....com>
Cc: Masahiro Yamada <yamada.masahiro@...ionext.com>
Cc: Michal Marek <michal.lkml@...kovi.net>
Cc: linux-doc@...r.kernel.org
Cc: devicetree@...r.kernel.org
Cc: linux-kbuild@...r.kernel.org
Signed-off-by: Rob Herring <robh@...nel.org>
---
.gitignore | 1 +
Documentation/Makefile | 2 +-
Documentation/devicetree/bindings/.gitignore | 2 ++
Documentation/devicetree/bindings/Makefile | 30 ++++++++++++++++++++
Makefile | 8 +++++-
scripts/Makefile.lib | 24 ++++++++++++++--
6 files changed, 63 insertions(+), 4 deletions(-)
create mode 100644 Documentation/devicetree/bindings/.gitignore
create mode 100644 Documentation/devicetree/bindings/Makefile
diff --git a/.gitignore b/.gitignore
index 97ba6b79834c..a20ac26aa2f5 100644
--- a/.gitignore
+++ b/.gitignore
@@ -15,6 +15,7 @@
*.bin
*.bz2
*.c.[012]*.*
+*.dt.yaml
*.dtb
*.dtb.S
*.dwo
diff --git a/Documentation/Makefile b/Documentation/Makefile
index 2ca77ad0f238..9786957c6a35 100644
--- a/Documentation/Makefile
+++ b/Documentation/Makefile
@@ -2,7 +2,7 @@
# Makefile for Sphinx documentation
#
-subdir-y :=
+subdir-y := devicetree/bindings/
# You can set these variables from the command line.
SPHINXBUILD = sphinx-build
diff --git a/Documentation/devicetree/bindings/.gitignore b/Documentation/devicetree/bindings/.gitignore
new file mode 100644
index 000000000000..7e47316f1d7a
--- /dev/null
+++ b/Documentation/devicetree/bindings/.gitignore
@@ -0,0 +1,2 @@
+*.example.dts
+*.yaml.tmp
diff --git a/Documentation/devicetree/bindings/Makefile b/Documentation/devicetree/bindings/Makefile
new file mode 100644
index 000000000000..b57f0dec3fab
--- /dev/null
+++ b/Documentation/devicetree/bindings/Makefile
@@ -0,0 +1,30 @@
+# SPDX-License-Identifier: GPL-2.0
+DT_DOC_CHECKER ?= dt-doc-validate
+DT_EXTRACT_EX ?= dt-extract-example
+
+quiet_cmd_chk_binding = CHKDT $<
+ cmd_chk_binding = (set -e; \
+ $(DT_DOC_CHECKER) $< ; \
+ mkdir -p $(dir $@) ; \
+ $(DT_EXTRACT_EX) $< > $@ )
+
+$(obj)/%.example.dts: $(src)/%.yaml FORCE
+ $(call if_changed,chk_binding)
+
+DT_MK_SCHEMA ?= dt-mk-schema
+DT_TMP_SCHEMA := .schema.yaml.tmp
+extra-y += $(DT_TMP_SCHEMA)
+
+quiet_cmd_mk_schema = SCHEMA $@
+ cmd_mk_schema = mkdir -p $(obj); \
+ $(DT_MK_SCHEMA) -o $@ $(srctree)/$(src)
+
+DT_DOCS = $(shell cd $(srctree)/$(src) && find * -name '*.yaml')
+DTS_EXAMPLES = $(patsubst %.yaml,%.example.dts, $(DT_DOCS))
+extra-y += $(DTS_EXAMPLES)
+
+DTBS = $(patsubst %.yaml,%.example.dtb, $(DT_DOCS))
+extra-y += $(DTBS)
+
+$(obj)/$(DT_TMP_SCHEMA): $(addprefix $(obj)/, $(DTBS)) FORCE
+ $(call if_changed,mk_schema)
diff --git a/Makefile b/Makefile
index 021e274c4b03..648f7238e883 100644
--- a/Makefile
+++ b/Makefile
@@ -1227,10 +1227,13 @@ ifneq ($(dtstree),)
%.dtb: prepare3 scripts_dtc
$(Q)$(MAKE) $(build)=$(dtstree) $(dtstree)/$@
-PHONY += dtbs dtbs_install
+PHONY += dtbs dtbs_install dt_binding_check
dtbs: prepare3 scripts_dtc
$(Q)$(MAKE) $(build)=$(dtstree)
+dtbs_check: prepare3 dt_binding_check
+ $(Q)$(MAKE) $(build)=$(dtstree) CHECK_DTBS=1
+
dtbs_install:
$(Q)$(MAKE) $(dtbinst)=$(dtstree)
@@ -1244,6 +1247,9 @@ PHONY += scripts_dtc
scripts_dtc: scripts_basic
$(Q)$(MAKE) $(build)=scripts/dtc
+dt_binding_check: scripts_dtc
+ $(Q)$(MAKE) $(build)=Documentation/devicetree/bindings
+
# ---------------------------------------------------------------------------
# Modules
diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib
index 8fe4468f9bda..d1c5630ba24c 100644
--- a/scripts/Makefile.lib
+++ b/scripts/Makefile.lib
@@ -61,6 +61,11 @@ real-obj-m := $(foreach m, $(obj-m), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y))
extra-y += $(dtb-y)
extra-$(CONFIG_OF_ALL_DTBS) += $(dtb-)
+ifneq ($(CHECK_DTBS),)
+extra-y += $(patsubst %.dtb,%.dt.yaml, $(dtb-y))
+extra-$(CONFIG_OF_ALL_DTBS) += $(patsubst %.dtb,%.dt.yaml, $(dtb-))
+endif
+
# Add subdir path
extra-y := $(addprefix $(obj)/,$(extra-y))
@@ -284,13 +289,28 @@ $(obj)/%.dtb.S: $(obj)/%.dtb FORCE
quiet_cmd_dtc = DTC $@
cmd_dtc = mkdir -p $(dir ${dtc-tmp}) ; \
$(HOSTCC) -E $(dtc_cpp_flags) -x assembler-with-cpp -o $(dtc-tmp) $< ; \
- $(DTC) -O dtb -o $@ -b 0 \
+ $(DTC) -O $(2) -o $@ -b 0 \
$(addprefix -i,$(dir $<) $(DTC_INCLUDE)) $(DTC_FLAGS) \
-d $(depfile).dtc.tmp $(dtc-tmp) ; \
cat $(depfile).pre.tmp $(depfile).dtc.tmp > $(depfile)
$(obj)/%.dtb: $(src)/%.dts $(DTC) FORCE
- $(call if_changed_dep,dtc)
+ $(call if_changed_dep,dtc,dtb)
+
+DT_CHECKER ?= dt-validate
+DT_BINDING_DIR := Documentation/devicetree/bindings
+DT_TMP_SCHEMA := $(objtree)/$(DT_BINDING_DIR)/.schema.yaml.tmp
+
+quiet_cmd_dtb_check = CHECK $@
+ cmd_dtb_check = $(DT_CHECKER) -p $(DT_TMP_SCHEMA) $@ ;
+
+define rule_dtc_dt_yaml
+ $(call cmd_and_fixdep,dtc,yaml) \
+ $(call echo-cmd,dtb_check) $(cmd_dtb_check)
+endef
+
+$(obj)/%.dt.yaml: $(src)/%.dts $(DTC) $(DT_TMP_SCHEMA) FORCE
+ $(call if_changed_rule,dtc_dt_yaml)
dtc-tmp = $(subst $(comma),_,$(dot-target).dts.tmp)
--
2.17.1
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