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  echo "warning: python package 'yamllint' not installed, skipping" >&2)
8
9DT_SCHEMA_MIN_VERSION = 2023.9
10
11PHONY += check_dtschema_version
12check_dtschema_version:
13	@which $(DT_DOC_CHECKER) >/dev/null || \
14		{ echo "Error: '$(DT_DOC_CHECKER)' not found!" >&2; \
15		  echo "Ensure dtschema python package is installed and in your PATH." >&2; \
16		  echo "Current PATH is:" >&2; \
17		  echo "$$PATH" >&2; false; }
18	@{ echo $(DT_SCHEMA_MIN_VERSION); \
19	$(DT_DOC_CHECKER) --version 2>/dev/null || echo 0; } | sort -Vc >/dev/null || \
20	{ echo "ERROR: dtschema minimum version is v$(DT_SCHEMA_MIN_VERSION)" >&2; false; }
21
22quiet_cmd_extract_ex = DTEX    $@
23      cmd_extract_ex = $(DT_EXTRACT_EX) $< > $@
24
25$(obj)/%.example.dts: $(src)/%.yaml check_dtschema_version FORCE
26	$(call if_changed,extract_ex)
27
28find_all_cmd = find $(srctree)/$(src) \( -name '*.yaml' ! \
29		-name 'processed-schema*' \)
30
31find_cmd = $(find_all_cmd) | \
32		sed 's|^$(srctree)/||' | \
33		grep -F -e "$(subst :," -e ",$(DT_SCHEMA_FILES))" | \
34		sed 's|^|$(srctree)/|'
35CHK_DT_DOCS := $(shell $(find_cmd))
36
37quiet_cmd_yamllint = LINT    $(src)
38      cmd_yamllint = ($(find_cmd) | \
39                     xargs -n200 -P$$(nproc) \
40		     $(DT_SCHEMA_LINT) -f parsable -c $(srctree)/$(src)/.yamllint >&2) || true
41
42quiet_cmd_chk_bindings = CHKDT   $@
43      cmd_chk_bindings = ($(find_cmd) | \
44                         xargs -n200 -P$$(nproc) $(DT_DOC_CHECKER) -u $(srctree)/$(src)) || true
45
46quiet_cmd_mk_schema = SCHEMA  $@
47      cmd_mk_schema = f=$$(mktemp) ; \
48                      $(find_all_cmd) > $$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 $(find_all_cmd)))
59
60override DTC_FLAGS := \
61	-Wno-avoid_unnecessary_addr_size \
62	-Wno-graph_child_address \
63	-Wno-interrupt_provider \
64	-Wno-unique_unit_address \
65	-Wunique_unit_address_if_enabled
66
67$(obj)/processed-schema.json: $(DT_DOCS) $(src)/.yamllint check_dtschema_version FORCE
68	$(call if_changed_rule,chkdt)
69
70always-y += processed-schema.json
71always-$(CHECK_DT_BINDING) += $(patsubst $(srctree)/$(src)/%.yaml,%.example.dts, $(CHK_DT_DOCS))
72always-$(CHECK_DT_BINDING) += $(patsubst $(srctree)/$(src)/%.yaml,%.example.dtb, $(CHK_DT_DOCS))
73
74# Hack: avoid 'Argument list too long' error for 'make clean'. Remove most of
75# build artifacts here before they are processed by scripts/Makefile.clean
76clean-files = $(shell find $(obj) \( -name '*.example.dts' -o \
77			-name '*.example.dtb' \) -delete 2>/dev/null)
78
79dt_compatible_check: $(obj)/processed-schema.json
80	$(Q)$(srctree)/scripts/dtc/dt-extract-compatibles $(srctree) | xargs dt-check-compatible -v -s $<
81