1# SPDX-License-Identifier: GPL-2.0
2DT_DOC_CHECKER ?= dt-doc-validate
3DT_EXTRACT_EX ?= dt-extract-example
4DT_MK_SCHEMA ?= dt-mk-schema
5
6DT_SCHEMA_LINT = $(shell which yamllint)
7
8DT_SCHEMA_MIN_VERSION = 2021.2.1
9
10PHONY += check_dtschema_version
11check_dtschema_version:
12	@{ echo $(DT_SCHEMA_MIN_VERSION); \
13	$(DT_DOC_CHECKER) --version 2>/dev/null || echo 0; } | sort -Vc >/dev/null || \
14	{ echo "ERROR: dtschema minimum version is v$(DT_SCHEMA_MIN_VERSION)" >&2; false; }
15
16quiet_cmd_extract_ex = DTEX    $@
17      cmd_extract_ex = $(DT_EXTRACT_EX) $< > $@
18
19$(obj)/%.example.dts: $(src)/%.yaml check_dtschema_version FORCE
20	$(call if_changed,extract_ex)
21
22# Use full schemas when checking %.example.dts
23DT_TMP_SCHEMA := $(obj)/processed-schema-examples.json
24
25find_all_cmd = find $(srctree)/$(src) \( -name '*.yaml' ! \
26		-name 'processed-schema*' ! \
27		-name '*.example.dt.yaml' \)
28
29ifeq ($(DT_SCHEMA_FILES),)
30find_cmd = $(find_all_cmd)
31else
32find_cmd = echo $(addprefix $(srctree)/, $(DT_SCHEMA_FILES))
33endif
34
35quiet_cmd_yamllint = LINT    $(src)
36      cmd_yamllint = ($(find_cmd) | \
37                     xargs -n200 -P$$(nproc) \
38		     $(DT_SCHEMA_LINT) -f parsable -c $(srctree)/$(src)/.yamllint >&2) || true
39
40quiet_cmd_chk_bindings = CHKDT   $@
41      cmd_chk_bindings = ($(find_cmd) | \
42                         xargs -n200 -P$$(nproc) $(DT_DOC_CHECKER) -u $(srctree)/$(src)) || true
43
44quiet_cmd_mk_schema = SCHEMA  $@
45      cmd_mk_schema = f=$$(mktemp) ; \
46                      $(if $(DT_MK_SCHEMA_FLAGS), \
47                           printf '%s\n' $(real-prereqs), \
48                           $(find_all_cmd)) > $$f ; \
49                      $(DT_MK_SCHEMA) -j $(DT_MK_SCHEMA_FLAGS) @$$f > $@ ; \
50		      rm -f $$f
51
52define rule_chkdt
53	$(if $(DT_SCHEMA_LINT),$(call cmd,yamllint),)
54	$(call cmd,chk_bindings)
55	$(call cmd,mk_schema)
56endef
57
58DT_DOCS = $(patsubst $(srctree)/%,%,$(shell $(find_all_cmd)))
59
60override DTC_FLAGS := \
61	-Wno-avoid_unnecessary_addr_size \
62	-Wno-graph_child_address \
63	-Wno-interrupt_provider
64
65# Disable undocumented compatible checks until warning free
66override DT_CHECKER_FLAGS ?=
67
68$(obj)/processed-schema-examples.json: $(DT_DOCS) $(src)/.yamllint check_dtschema_version FORCE
69	$(call if_changed_rule,chkdt)
70
71ifeq ($(DT_SCHEMA_FILES),)
72
73# Unless DT_SCHEMA_FILES is specified, use the full schema for dtbs_check too.
74# Just copy processed-schema-examples.json
75
76$(obj)/processed-schema.json: $(obj)/processed-schema-examples.json FORCE
77	$(call if_changed,copy)
78
79DT_SCHEMA_FILES = $(DT_DOCS)
80
81else
82
83# If DT_SCHEMA_FILES is specified, use it for processed-schema.json
84
85$(obj)/processed-schema.json: DT_MK_SCHEMA_FLAGS := -u
86$(obj)/processed-schema.json: $(DT_SCHEMA_FILES) check_dtschema_version FORCE
87	$(call if_changed,mk_schema)
88
89endif
90
91always-$(CHECK_DT_BINDING) += processed-schema-examples.json
92always-$(CHECK_DTBS)       += processed-schema.json
93always-$(CHECK_DT_BINDING) += $(patsubst $(src)/%.yaml,%.example.dts, $(DT_SCHEMA_FILES))
94always-$(CHECK_DT_BINDING) += $(patsubst $(src)/%.yaml,%.example.dt.yaml, $(DT_SCHEMA_FILES))
95
96# Hack: avoid 'Argument list too long' error for 'make clean'. Remove most of
97# build artifacts here before they are processed by scripts/Makefile.clean
98clean-files = $(shell find $(obj) \( -name '*.example.dts' -o \
99			-name '*.example.dt.yaml' \) -delete 2>/dev/null)
100