Commit | Line | Data |
---|---|---|
b2441318 | 1 | # SPDX-License-Identifier: GPL-2.0 |
f77bf014 SR |
2 | # Backward compatibility |
3 | asflags-y += $(EXTRA_AFLAGS) | |
4 | ccflags-y += $(EXTRA_CFLAGS) | |
5 | cppflags-y += $(EXTRA_CPPFLAGS) | |
6 | ldflags-y += $(EXTRA_LDFLAGS) | |
7 | ||
8fdc3fbb | 8 | # flags that take effect in current and sub directories |
4e13d47c MY |
9 | KBUILD_AFLAGS += $(subdir-asflags-y) |
10 | KBUILD_CFLAGS += $(subdir-ccflags-y) | |
2f7ab126 | 11 | KBUILD_RUSTFLAGS += $(subdir-rustflags-y) |
720097d8 | 12 | |
1da177e4 LT |
13 | # Figure out what we need to build from the various variables |
14 | # =========================================================================== | |
15 | ||
16 | # When an object is listed to be built compiled-in and modular, | |
17 | # only build the compiled-in version | |
1da177e4 LT |
18 | obj-m := $(filter-out $(obj-y),$(obj-m)) |
19 | ||
20 | # Libraries are always collected in one lib file. | |
21 | # Filter out objects already built-in | |
1da177e4 LT |
22 | lib-y := $(filter-out $(obj-y), $(sort $(lib-y) $(lib-m))) |
23 | ||
0a8820e7 MY |
24 | # Subdirectories we need to descend into |
25 | subdir-ym := $(sort $(subdir-y) $(subdir-m) \ | |
26 | $(patsubst %/,%, $(filter %/, $(obj-y) $(obj-m)))) | |
27 | ||
b2c88554 MY |
28 | # Handle objects in subdirs: |
29 | # - If we encounter foo/ in $(obj-y), replace it by foo/built-in.a and | |
30 | # foo/modules.order | |
31 | # - If we encounter foo/ in $(obj-m), replace it by foo/modules.order | |
32 | # | |
33 | # Generate modules.order to determine modorder. Unfortunately, we don't have | |
34 | # information about ordering between -y and -m subdirs. Just put -y's first. | |
35 | ||
36 | ifdef need-modorder | |
37 | obj-m := $(patsubst %/,%/modules.order, $(filter %/, $(obj-y)) $(obj-m)) | |
38 | else | |
39 | obj-m := $(filter-out %/, $(obj-m)) | |
40 | endif | |
41 | ||
56d58936 | 42 | ifdef need-builtin |
f49821ee | 43 | obj-y := $(patsubst %/, %/built-in.a, $(obj-y)) |
56d58936 MY |
44 | else |
45 | obj-y := $(filter-out %/, $(obj-y)) | |
46 | endif | |
1da177e4 | 47 | |
44f87191 MY |
48 | # Expand $(foo-objs) $(foo-y) etc. by replacing their individuals |
49 | suffix-search = $(strip $(foreach s, $3, $($(1:%$(strip $2)=%$s)))) | |
50 | # List composite targets that are constructed by combining other targets | |
51 | multi-search = $(sort $(foreach m, $1, $(if $(call suffix-search, $m, $2, $3 -), $m))) | |
52 | # List primitive targets that are compiled from source files | |
53 | real-search = $(foreach m, $1, $(if $(call suffix-search, $m, $2, $3 -), $(call suffix-search, $m, $2, $3), $m)) | |
54 | ||
33e84f2e | 55 | # If $(foo-objs), $(foo-y), $(foo-m), or $(foo-) exists, foo.o is a composite object |
44f87191 MY |
56 | multi-obj-y := $(call multi-search, $(obj-y), .o, -objs -y) |
57 | multi-obj-m := $(call multi-search, $(obj-m), .o, -objs -y -m) | |
a6601e01 | 58 | multi-obj-ym := $(multi-obj-y) $(multi-obj-m) |
1da177e4 | 59 | |
f98fe47c MY |
60 | # Replace multi-part objects by their individual parts, |
61 | # including built-in.a from subdirectories | |
44f87191 MY |
62 | real-obj-y := $(call real-search, $(obj-y), .o, -objs -y) |
63 | real-obj-m := $(call real-search, $(obj-m), .o, -objs -y -m) | |
1da177e4 | 64 | |
5f2fb52f MY |
65 | always-y += $(always-m) |
66 | ||
faabed29 MY |
67 | # hostprogs-always-y += foo |
68 | # ... is a shorthand for | |
69 | # hostprogs += foo | |
70 | # always-y += foo | |
71 | hostprogs += $(hostprogs-always-y) $(hostprogs-always-m) | |
72 | always-y += $(hostprogs-always-y) $(hostprogs-always-m) | |
73 | ||
74 | # userprogs-always-y is likewise. | |
75 | userprogs += $(userprogs-always-y) $(userprogs-always-m) | |
76 | always-y += $(userprogs-always-y) $(userprogs-always-m) | |
77 | ||
7e7962dd MY |
78 | # DTB |
79 | # If CONFIG_OF_ALL_DTBS is enabled, all DT blobs are built | |
9ca29e41 VK |
80 | dtb-$(CONFIG_OF_ALL_DTBS) += $(dtb-) |
81 | ||
bcf0c664 MY |
82 | # Composite DTB (i.e. DTB constructed by overlay) |
83 | multi-dtb-y := $(call multi-search, $(dtb-y), .dtb, -dtbs) | |
84 | # Primitive DTB compiled from *.dts | |
85 | real-dtb-y := $(call real-search, $(dtb-y), .dtb, -dtbs) | |
86 | # Base DTB that overlay is applied onto (each first word of $(*-dtbs) expansion) | |
87 | base-dtb-y := $(foreach m, $(multi-dtb-y), $(firstword $(call suffix-search, $m, .dtb, -dtbs))) | |
15d16d6d | 88 | |
2047ace9 | 89 | always-y += $(dtb-y) |
7e7962dd | 90 | |
1da177e4 LT |
91 | # Add subdir path |
92 | ||
5750121a | 93 | ifneq ($(obj),.) |
1da177e4 | 94 | extra-y := $(addprefix $(obj)/,$(extra-y)) |
5f2fb52f | 95 | always-y := $(addprefix $(obj)/,$(always-y)) |
1da177e4 | 96 | targets := $(addprefix $(obj)/,$(targets)) |
1da177e4 LT |
97 | obj-m := $(addprefix $(obj)/,$(obj-m)) |
98 | lib-y := $(addprefix $(obj)/,$(lib-y)) | |
f5f33681 MY |
99 | real-obj-y := $(addprefix $(obj)/,$(real-obj-y)) |
100 | real-obj-m := $(addprefix $(obj)/,$(real-obj-m)) | |
a6601e01 | 101 | multi-obj-m := $(addprefix $(obj)/, $(multi-obj-m)) |
bcf0c664 MY |
102 | multi-dtb-y := $(addprefix $(obj)/, $(multi-dtb-y)) |
103 | real-dtb-y := $(addprefix $(obj)/, $(real-dtb-y)) | |
1da177e4 | 104 | subdir-ym := $(addprefix $(obj)/,$(subdir-ym)) |
5750121a | 105 | endif |
1da177e4 | 106 | |
c0152e9a | 107 | # Finds the multi-part object the current object will be linked into. |
1664a377 | 108 | # If the object belongs to two or more multi-part objects, list them all. |
a6601e01 | 109 | modname-multi = $(sort $(foreach m,$(multi-obj-ym),\ |
d4452837 | 110 | $(if $(filter $*.o, $(call suffix-search, $m, .o, -objs -y -m)),$(m:.o=)))) |
c0152e9a | 111 | |
5c816641 | 112 | __modname = $(or $(modname-multi),$(basetarget)) |
1664a377 MY |
113 | |
114 | modname = $(subst $(space),:,$(__modname)) | |
115 | modfile = $(addprefix $(obj)/,$(__modname)) | |
c0152e9a | 116 | |
54b8ae66 MY |
117 | # target with $(obj)/ and its suffix stripped |
118 | target-stem = $(basename $(patsubst $(obj)/%,%,$@)) | |
119 | ||
1da177e4 | 120 | # These flags are needed for modversions and compiling, so we define them here |
8fdc3fbb | 121 | # $(modname_flags) defines KBUILD_MODNAME as the name of the module it will |
1da177e4 | 122 | # end up in (or would, if it gets compiled in) |
a8cccdd9 ST |
123 | name-fix-token = $(subst $(comma),_,$(subst -,_,$1)) |
124 | name-fix = $(call stringify,$(call name-fix-token,$1)) | |
b42841b7 | 125 | basename_flags = -DKBUILD_BASENAME=$(call name-fix,$(basetarget)) |
a8cccdd9 ST |
126 | modname_flags = -DKBUILD_MODNAME=$(call name-fix,$(modname)) \ |
127 | -D__KBUILD_MODNAME=kmod_$(call name-fix-token,$(modname)) | |
1664a377 | 128 | modfile_flags = -DKBUILD_MODFILE=$(call stringify,$(modfile)) |
1da177e4 | 129 | |
15d5761a MY |
130 | _c_flags = $(filter-out $(CFLAGS_REMOVE_$(target-stem).o), \ |
131 | $(filter-out $(ccflags-remove-y), \ | |
132 | $(KBUILD_CPPFLAGS) $(KBUILD_CFLAGS) $(ccflags-y)) \ | |
133 | $(CFLAGS_$(target-stem).o)) | |
2f7ab126 MO |
134 | _rust_flags = $(filter-out $(RUSTFLAGS_REMOVE_$(target-stem).o), \ |
135 | $(filter-out $(rustflags-remove-y), \ | |
136 | $(KBUILD_RUSTFLAGS) $(rustflags-y)) \ | |
137 | $(RUSTFLAGS_$(target-stem).o)) | |
15d5761a MY |
138 | _a_flags = $(filter-out $(AFLAGS_REMOVE_$(target-stem).o), \ |
139 | $(filter-out $(asflags-remove-y), \ | |
140 | $(KBUILD_CPPFLAGS) $(KBUILD_AFLAGS) $(asflags-y)) \ | |
141 | $(AFLAGS_$(target-stem).o)) | |
54b8ae66 | 142 | _cpp_flags = $(KBUILD_CPPFLAGS) $(cppflags-y) $(CPPFLAGS_$(target-stem).lds) |
1da177e4 | 143 | |
2521f2c2 PO |
144 | # |
145 | # Enable gcov profiling flags for a file, directory or for all files depending | |
146 | # on variables GCOV_PROFILE_obj.o, GCOV_PROFILE and CONFIG_GCOV_PROFILE_ALL | |
147 | # (in this order) | |
148 | # | |
149 | ifeq ($(CONFIG_GCOV_KERNEL),y) | |
150 | _c_flags += $(if $(patsubst n%,, \ | |
151 | $(GCOV_PROFILE_$(basetarget).o)$(GCOV_PROFILE)$(CONFIG_GCOV_PROFILE_ALL)), \ | |
152 | $(CFLAGS_GCOV)) | |
153 | endif | |
154 | ||
0b24becc AR |
155 | # |
156 | # Enable address sanitizer flags for kernel except some files or directories | |
157 | # we don't want to check (depends on variables KASAN_SANITIZE_obj.o, KASAN_SANITIZE) | |
158 | # | |
159 | ifeq ($(CONFIG_KASAN),y) | |
0fea6e9a | 160 | ifneq ($(CONFIG_KASAN_HW_TAGS),y) |
0b24becc AR |
161 | _c_flags += $(if $(patsubst n%,, \ |
162 | $(KASAN_SANITIZE_$(basetarget).o)$(KASAN_SANITIZE)y), \ | |
0e410e15 | 163 | $(CFLAGS_KASAN), $(CFLAGS_KASAN_NOSANITIZE)) |
0b24becc | 164 | endif |
0fea6e9a | 165 | endif |
0b24becc | 166 | |
f80be457 AP |
167 | ifeq ($(CONFIG_KMSAN),y) |
168 | _c_flags += $(if $(patsubst n%,, \ | |
169 | $(KMSAN_SANITIZE_$(basetarget).o)$(KMSAN_SANITIZE)y), \ | |
170 | $(CFLAGS_KMSAN)) | |
171 | _c_flags += $(if $(patsubst n%,, \ | |
172 | $(KMSAN_ENABLE_CHECKS_$(basetarget).o)$(KMSAN_ENABLE_CHECKS)y), \ | |
173 | , -mllvm -msan-disable-checks=1) | |
174 | endif | |
175 | ||
c6d30853 AR |
176 | ifeq ($(CONFIG_UBSAN),y) |
177 | _c_flags += $(if $(patsubst n%,, \ | |
178 | $(UBSAN_SANITIZE_$(basetarget).o)$(UBSAN_SANITIZE)$(CONFIG_UBSAN_SANITIZE_ALL)), \ | |
179 | $(CFLAGS_UBSAN)) | |
180 | endif | |
181 | ||
5c9a8750 DV |
182 | ifeq ($(CONFIG_KCOV),y) |
183 | _c_flags += $(if $(patsubst n%,, \ | |
a4691dea | 184 | $(KCOV_INSTRUMENT_$(basetarget).o)$(KCOV_INSTRUMENT)$(CONFIG_KCOV_INSTRUMENT_ALL)), \ |
5c9a8750 DV |
185 | $(CFLAGS_KCOV)) |
186 | endif | |
187 | ||
dfd402a4 ME |
188 | # |
189 | # Enable KCSAN flags except some files or directories we don't want to check | |
190 | # (depends on variables KCSAN_SANITIZE_obj.o, KCSAN_SANITIZE) | |
191 | # | |
192 | ifeq ($(CONFIG_KCSAN),y) | |
193 | _c_flags += $(if $(patsubst n%,, \ | |
194 | $(KCSAN_SANITIZE_$(basetarget).o)$(KCSAN_SANITIZE)y), \ | |
195 | $(CFLAGS_KCSAN)) | |
48c9e28e ME |
196 | # Some uninstrumented files provide implied barriers required to avoid false |
197 | # positives: set KCSAN_INSTRUMENT_BARRIERS for barrier instrumentation only. | |
198 | _c_flags += $(if $(patsubst n%,, \ | |
199 | $(KCSAN_INSTRUMENT_BARRIERS_$(basetarget).o)$(KCSAN_INSTRUMENT_BARRIERS)n), \ | |
200 | -D__KCSAN_INSTRUMENT_BARRIERS__) | |
dfd402a4 | 201 | endif |
5c9a8750 | 202 | |
cdd750bf MY |
203 | # $(srctree)/$(src) for including checkin headers from generated source files |
204 | # $(objtree)/$(obj) for including generated headers from checkin source files | |
58156ba4 | 205 | ifeq ($(KBUILD_EXTMOD),) |
051f278e | 206 | ifdef building_out_of_srctree |
cdd750bf MY |
207 | _c_flags += -I $(srctree)/$(src) -I $(objtree)/$(obj) |
208 | _a_flags += -I $(srctree)/$(src) -I $(objtree)/$(obj) | |
209 | _cpp_flags += -I $(srctree)/$(src) -I $(objtree)/$(obj) | |
1da177e4 | 210 | endif |
58156ba4 | 211 | endif |
1da177e4 | 212 | |
eb27ea5c MY |
213 | part-of-module = $(if $(filter $(basename $@).o, $(real-obj-m)),y) |
214 | quiet_modtag = $(if $(part-of-module),[M], ) | |
215 | ||
216 | modkern_cflags = \ | |
217 | $(if $(part-of-module), \ | |
218 | $(KBUILD_CFLAGS_MODULE) $(CFLAGS_MODULE), \ | |
1664a377 | 219 | $(KBUILD_CFLAGS_KERNEL) $(CFLAGS_KERNEL) $(modfile_flags)) |
eb27ea5c | 220 | |
2f7ab126 MO |
221 | modkern_rustflags = \ |
222 | $(if $(part-of-module), \ | |
223 | $(KBUILD_RUSTFLAGS_MODULE) $(RUSTFLAGS_MODULE), \ | |
224 | $(KBUILD_RUSTFLAGS_KERNEL) $(RUSTFLAGS_KERNEL)) | |
225 | ||
eb27ea5c MY |
226 | modkern_aflags = $(if $(part-of-module), \ |
227 | $(KBUILD_AFLAGS_MODULE) $(AFLAGS_MODULE), \ | |
228 | $(KBUILD_AFLAGS_KERNEL) $(AFLAGS_KERNEL)) | |
229 | ||
30a77297 | 230 | c_flags = -Wp,-MMD,$(depfile) $(NOSTDINC_FLAGS) $(LINUXINCLUDE) \ |
a95b37e2 | 231 | -include $(srctree)/include/linux/compiler_types.h \ |
cdd750bf | 232 | $(_c_flags) $(modkern_cflags) \ |
b42841b7 | 233 | $(basename_flags) $(modname_flags) |
1da177e4 | 234 | |
2f7ab126 MO |
235 | rust_flags = $(_rust_flags) $(modkern_rustflags) @$(objtree)/include/generated/rustc_cfg |
236 | ||
30a77297 | 237 | a_flags = -Wp,-MMD,$(depfile) $(NOSTDINC_FLAGS) $(LINUXINCLUDE) \ |
cdd750bf | 238 | $(_a_flags) $(modkern_aflags) |
1da177e4 | 239 | |
30a77297 | 240 | cpp_flags = -Wp,-MMD,$(depfile) $(NOSTDINC_FLAGS) $(LINUXINCLUDE) \ |
cdd750bf | 241 | $(_cpp_flags) |
1da177e4 | 242 | |
d503ac53 | 243 | ld_flags = $(KBUILD_LDFLAGS) $(ldflags-y) $(LDFLAGS_$(@F)) |
1da177e4 | 244 | |
50f9ddaf MY |
245 | DTC_INCLUDE := $(srctree)/scripts/dtc/include-prefixes |
246 | ||
30a77297 | 247 | dtc_cpp_flags = -Wp,-MMD,$(depfile).pre.tmp -nostdinc \ |
50f9ddaf | 248 | $(addprefix -I,$(DTC_INCLUDE)) \ |
e570d7c1 SW |
249 | -undef -D__DTS__ |
250 | ||
b42d2306 MY |
251 | ifdef CONFIG_OBJTOOL |
252 | ||
253 | objtool := $(objtree)/tools/objtool/objtool | |
254 | ||
9ec6ab6e MY |
255 | objtool-args-$(CONFIG_HAVE_JUMP_LABEL_HACK) += --hacks=jump_label |
256 | objtool-args-$(CONFIG_HAVE_NOINSTR_HACK) += --hacks=noinstr | |
257 | objtool-args-$(CONFIG_X86_KERNEL_IBT) += --ibt | |
258 | objtool-args-$(CONFIG_FTRACE_MCOUNT_USE_OBJTOOL) += --mcount | |
259 | objtool-args-$(CONFIG_UNWINDER_ORC) += --orc | |
260 | objtool-args-$(CONFIG_RETPOLINE) += --retpoline | |
261 | objtool-args-$(CONFIG_RETHUNK) += --rethunk | |
262 | objtool-args-$(CONFIG_SLS) += --sls | |
263 | objtool-args-$(CONFIG_STACK_VALIDATION) += --stackval | |
264 | objtool-args-$(CONFIG_HAVE_STATIC_CALL_INLINE) += --static-call | |
265 | objtool-args-$(CONFIG_HAVE_UACCESS_VALIDATION) += --uaccess | |
266 | objtool-args-$(CONFIG_GCOV_KERNEL) += --no-unreachable | |
267 | ||
268 | objtool-args = $(objtool-args-y) \ | |
b42d2306 | 269 | $(if $(delay-objtool), --link) \ |
9ec6ab6e | 270 | $(if $(part-of-module), --module) |
b42d2306 MY |
271 | |
272 | delay-objtool := $(or $(CONFIG_LTO_CLANG),$(CONFIG_X86_KERNEL_IBT)) | |
273 | ||
9ec6ab6e | 274 | cmd_objtool = $(if $(objtool-enabled), ; $(objtool) $(objtool-args) $@) |
b42d2306 MY |
275 | cmd_gen_objtooldep = $(if $(objtool-enabled), { echo ; echo '$@: $$(wildcard $(objtool))' ; } >> $(dot-target).cmd) |
276 | ||
277 | endif # CONFIG_OBJTOOL | |
278 | ||
c8589d1e MY |
279 | # Useful for describing the dependency of composite objects |
280 | # Usage: | |
281 | # $(call multi_depend, multi_used_targets, suffix_to_remove, suffix_to_add) | |
282 | define multi_depend | |
f97cf399 MY |
283 | $(foreach m, $1, \ |
284 | $(eval $m: \ | |
285 | $(addprefix $(obj)/, $(call suffix-search, $(patsubst $(obj)/%,%,$m), $2, $3)))) | |
c8589d1e MY |
286 | endef |
287 | ||
a5575df5 | 288 | # Copy a file |
1da177e4 | 289 | # =========================================================================== |
3787b7da MY |
290 | # 'cp' preserves permissions. If you use it to copy a file in read-only srctree, |
291 | # the copy would be read-only as well, leading to an error when executing the | |
292 | # rule next time. Use 'cat' instead in order to generate a writable file. | |
a5575df5 MY |
293 | quiet_cmd_copy = COPY $@ |
294 | cmd_copy = cat $< > $@ | |
1da177e4 | 295 | |
991d76c9 | 296 | $(obj)/%: $(src)/%_shipped |
a5575df5 | 297 | $(call cmd,copy) |
1da177e4 LT |
298 | |
299 | # Commands useful for building a boot image | |
300 | # =========================================================================== | |
38385f8f | 301 | # |
1da177e4 LT |
302 | # Use as following: |
303 | # | |
304 | # target: source(s) FORCE | |
305 | # $(if_changed,ld/objcopy/gzip) | |
306 | # | |
2047ace9 | 307 | # and add target to 'targets' so that we know we have to |
1da177e4 LT |
308 | # read in the saved command line |
309 | ||
310 | # Linking | |
311 | # --------------------------------------------------------------------------- | |
312 | ||
313 | quiet_cmd_ld = LD $@ | |
afa974b7 | 314 | cmd_ld = $(LD) $(ld_flags) $(real-prereqs) -o $@ |
1da177e4 | 315 | |
898f5a00 MY |
316 | # Archive |
317 | # --------------------------------------------------------------------------- | |
318 | ||
319 | quiet_cmd_ar = AR $@ | |
13dc8c02 | 320 | cmd_ar = rm -f $@; $(AR) cDPrsT $@ $(real-prereqs) |
898f5a00 | 321 | |
1da177e4 LT |
322 | # Objcopy |
323 | # --------------------------------------------------------------------------- | |
324 | ||
325 | quiet_cmd_objcopy = OBJCOPY $@ | |
326 | cmd_objcopy = $(OBJCOPY) $(OBJCOPYFLAGS) $(OBJCOPYFLAGS_$(@F)) $< $@ | |
327 | ||
328 | # Gzip | |
329 | # --------------------------------------------------------------------------- | |
330 | ||
331 | quiet_cmd_gzip = GZIP $@ | |
e4a42c82 | 332 | cmd_gzip = cat $(real-prereqs) | $(KGZIP) -n -f -9 > $@ |
1da177e4 | 333 | |
aab94339 DB |
334 | # DTC |
335 | # --------------------------------------------------------------------------- | |
6b22b3d1 | 336 | DTC ?= $(objtree)/scripts/dtc/dtc |
3eb619b2 | 337 | DTC_FLAGS += -Wno-interrupt_provider |
aab94339 | 338 | |
bc553986 | 339 | # Disable noisy checks by default |
e27128db | 340 | ifeq ($(findstring 1,$(KBUILD_EXTRA_WARN)),) |
8654cb8d | 341 | DTC_FLAGS += -Wno-unit_address_vs_reg \ |
4fd98e37 RH |
342 | -Wno-avoid_unnecessary_addr_size \ |
343 | -Wno-alias_paths \ | |
74656b68 | 344 | -Wno-graph_child_address \ |
70523a3c | 345 | -Wno-simple_bus_reg \ |
1ee7943c | 346 | -Wno-unique_unit_address |
bc553986 RH |
347 | endif |
348 | ||
e27128db | 349 | ifneq ($(findstring 2,$(KBUILD_EXTRA_WARN)),) |
8654cb8d | 350 | DTC_FLAGS += -Wnode_name_chars_strict \ |
3eb619b2 RH |
351 | -Wproperty_name_chars_strict \ |
352 | -Winterrupt_provider | |
bc553986 RH |
353 | endif |
354 | ||
331f7416 FR |
355 | DTC_FLAGS += $(DTC_FLAGS_$(basetarget)) |
356 | ||
bcf0c664 MY |
357 | # Set -@ if the target is a base DTB that overlay is applied onto |
358 | DTC_FLAGS += $(if $(filter $(patsubst $(obj)/%,%,$@), $(base-dtb-y)), -@) | |
359 | ||
aab94339 | 360 | # Generate an assembly file to wrap the output of the device tree compiler |
1c00a47e | 361 | quiet_cmd_dt_S_dtb= DTB $@ |
aab94339 | 362 | cmd_dt_S_dtb= \ |
b79c6aa6 | 363 | { \ |
aab94339 DB |
364 | echo '\#include <asm-generic/vmlinux.lds.h>'; \ |
365 | echo '.section .dtb.init.rodata,"a"'; \ | |
366 | echo '.balign STRUCT_ALIGNMENT'; \ | |
55fe6da9 JH |
367 | echo '.global __dtb_$(subst -,_,$(*F))_begin'; \ |
368 | echo '__dtb_$(subst -,_,$(*F))_begin:'; \ | |
aab94339 | 369 | echo '.incbin "$<" '; \ |
55fe6da9 JH |
370 | echo '__dtb_$(subst -,_,$(*F))_end:'; \ |
371 | echo '.global __dtb_$(subst -,_,$(*F))_end'; \ | |
aab94339 | 372 | echo '.balign STRUCT_ALIGNMENT'; \ |
b79c6aa6 | 373 | } > $@ |
aab94339 | 374 | |
a7f92419 MY |
375 | $(obj)/%.dtb.S: $(obj)/%.dtb FORCE |
376 | $(call if_changed,dt_S_dtb) | |
aab94339 DB |
377 | |
378 | quiet_cmd_dtc = DTC $@ | |
dd7699e3 | 379 | cmd_dtc = $(HOSTCC) -E $(dtc_cpp_flags) -x assembler-with-cpp -o $(dtc-tmp) $< ; \ |
64bfc994 | 380 | $(DTC) -o $@ -b 0 \ |
50f9ddaf | 381 | $(addprefix -i,$(dir $<) $(DTC_INCLUDE)) $(DTC_FLAGS) \ |
b0a4d8b3 IC |
382 | -d $(depfile).dtc.tmp $(dtc-tmp) ; \ |
383 | cat $(depfile).pre.tmp $(depfile).dtc.tmp > $(depfile) | |
1da177e4 | 384 | |
15d16d6d RH |
385 | quiet_cmd_fdtoverlay = DTOVL $@ |
386 | cmd_fdtoverlay = $(objtree)/scripts/dtc/fdtoverlay -o $@ -i $(real-prereqs) | |
387 | ||
bcf0c664 | 388 | $(multi-dtb-y): FORCE |
15d16d6d | 389 | $(call if_changed,fdtoverlay) |
bcf0c664 | 390 | $(call multi_depend, $(multi-dtb-y), .dtb, -dtbs) |
15d16d6d | 391 | |
ef8795f3 | 392 | ifneq ($(CHECK_DTBS)$(CHECK_DT_BINDING),) |
4f0e3a57 | 393 | DT_CHECKER ?= dt-validate |
2783a7f5 | 394 | DT_CHECKER_FLAGS ?= $(if $(DT_SCHEMA_FILES),-l $(DT_SCHEMA_FILES),-m) |
4f0e3a57 | 395 | DT_BINDING_DIR := Documentation/devicetree/bindings |
2783a7f5 | 396 | DT_TMP_SCHEMA := $(objtree)/$(DT_BINDING_DIR)/processed-schema.json |
4f0e3a57 | 397 | |
d7c6ea02 DB |
398 | quiet_cmd_dtb = DTC_CHK $@ |
399 | cmd_dtb = $(cmd_dtc) ; $(DT_CHECKER) $(DT_CHECKER_FLAGS) -u $(srctree)/$(DT_BINDING_DIR) -p $(DT_TMP_SCHEMA) $@ || true | |
400 | else | |
401 | quiet_cmd_dtb = $(quiet_cmd_dtc) | |
402 | cmd_dtb = $(cmd_dtc) | |
ef8795f3 | 403 | endif |
4f0e3a57 | 404 | |
ef8795f3 | 405 | $(obj)/%.dtb: $(src)/%.dts $(DTC) $(DT_TMP_SCHEMA) FORCE |
d7c6ea02 | 406 | $(call if_changed_dep,dtb) |
90b335fb | 407 | |
ef8795f3 RH |
408 | $(obj)/%.dtbo: $(src)/%.dts $(DTC) FORCE |
409 | $(call if_changed_dep,dtc) | |
410 | ||
b0a4d8b3 | 411 | dtc-tmp = $(subst $(comma),_,$(dot-target).dts.tmp) |
22435f38 | 412 | |
bc22c17e AK |
413 | # Bzip2 |
414 | # --------------------------------------------------------------------------- | |
415 | ||
d3dd3b5a PA |
416 | # Bzip2 and LZMA do not include size in file... so we have to fake that; |
417 | # append the size as a 32-bit littleendian number as gzip does. | |
4a2ff67c | 418 | size_append = printf $(shell \ |
d3dd3b5a | 419 | dec_size=0; \ |
afa974b7 | 420 | for F in $(real-prereqs); do \ |
a670b0b4 | 421 | fsize=$$($(CONFIG_SHELL) $(srctree)/scripts/file-size.sh $$F); \ |
d3dd3b5a PA |
422 | dec_size=$$(expr $$dec_size + $$fsize); \ |
423 | done; \ | |
1373411a JN |
424 | printf "%08x\n" $$dec_size | \ |
425 | sed 's/\(..\)/\1 /g' | { \ | |
426 | read ch0 ch1 ch2 ch3; \ | |
427 | for ch in $$ch3 $$ch2 $$ch1 $$ch0; do \ | |
428 | printf '%s%03o' '\\' $$((0x$$ch)); \ | |
429 | done; \ | |
430 | } \ | |
d3dd3b5a PA |
431 | ) |
432 | ||
c4d7f40b MY |
433 | quiet_cmd_file_size = GEN $@ |
434 | cmd_file_size = $(size_append) > $@ | |
435 | ||
d3dd3b5a | 436 | quiet_cmd_bzip2 = BZIP2 $@ |
7ce7e984 MY |
437 | cmd_bzip2 = cat $(real-prereqs) | $(KBZIP2) -9 > $@ |
438 | ||
439 | quiet_cmd_bzip2_with_size = BZIP2 $@ | |
440 | cmd_bzip2_with_size = { cat $(real-prereqs) | $(KBZIP2) -9; $(size_append); } > $@ | |
bc22c17e AK |
441 | |
442 | # Lzma | |
443 | # --------------------------------------------------------------------------- | |
444 | ||
445 | quiet_cmd_lzma = LZMA $@ | |
7ce7e984 MY |
446 | cmd_lzma = cat $(real-prereqs) | $(LZMA) -9 > $@ |
447 | ||
448 | quiet_cmd_lzma_with_size = LZMA $@ | |
449 | cmd_lzma_with_size = { cat $(real-prereqs) | $(LZMA) -9; $(size_append); } > $@ | |
7dd65feb | 450 | |
2d74b2c6 | 451 | quiet_cmd_lzo = LZO $@ |
7ce7e984 MY |
452 | cmd_lzo = cat $(real-prereqs) | $(KLZOP) -9 > $@ |
453 | ||
454 | quiet_cmd_lzo_with_size = LZO $@ | |
455 | cmd_lzo_with_size = { cat $(real-prereqs) | $(KLZOP) -9; $(size_append); } > $@ | |
d61931d8 | 456 | |
e76e1fdf | 457 | quiet_cmd_lz4 = LZ4 $@ |
7ce7e984 MY |
458 | cmd_lz4 = cat $(real-prereqs) | $(LZ4) -l -c1 stdin stdout > $@ |
459 | ||
460 | quiet_cmd_lz4_with_size = LZ4 $@ | |
461 | cmd_lz4_with_size = { cat $(real-prereqs) | $(LZ4) -l -c1 stdin stdout; \ | |
b79c6aa6 | 462 | $(size_append); } > $@ |
e76e1fdf | 463 | |
e3393645 SW |
464 | # U-Boot mkimage |
465 | # --------------------------------------------------------------------------- | |
466 | ||
467 | MKIMAGE := $(srctree)/scripts/mkuboot.sh | |
468 | ||
469 | # SRCARCH just happens to match slightly more than ARCH (on sparc), so reduces | |
470 | # the number of overrides in arch makefiles | |
471 | UIMAGE_ARCH ?= $(SRCARCH) | |
5c816641 | 472 | UIMAGE_COMPRESSION ?= $(or $(2),none) |
e3393645 SW |
473 | UIMAGE_OPTS-y ?= |
474 | UIMAGE_TYPE ?= kernel | |
475 | UIMAGE_LOADADDR ?= arch_must_set_this | |
476 | UIMAGE_ENTRYADDR ?= $(UIMAGE_LOADADDR) | |
477 | UIMAGE_NAME ?= 'Linux-$(KERNELRELEASE)' | |
e3393645 | 478 | |
786ac51a | 479 | quiet_cmd_uimage = UIMAGE $@ |
858805b3 | 480 | cmd_uimage = $(BASH) $(MKIMAGE) -A $(UIMAGE_ARCH) -O linux \ |
e3393645 SW |
481 | -C $(UIMAGE_COMPRESSION) $(UIMAGE_OPTS-y) \ |
482 | -T $(UIMAGE_TYPE) \ | |
483 | -a $(UIMAGE_LOADADDR) -e $(UIMAGE_ENTRYADDR) \ | |
786ac51a | 484 | -n $(UIMAGE_NAME) -d $< $@ |
e3393645 | 485 | |
24fa0402 LC |
486 | # XZ |
487 | # --------------------------------------------------------------------------- | |
488 | # Use xzkern to compress the kernel image and xzmisc to compress other things. | |
489 | # | |
490 | # xzkern uses a big LZMA2 dictionary since it doesn't increase memory usage | |
491 | # of the kernel decompressor. A BCJ filter is used if it is available for | |
492 | # the target architecture. xzkern also appends uncompressed size of the data | |
493 | # using size_append. The .xz format has the size information available at | |
494 | # the end of the file too, but it's in more complex format and it's good to | |
495 | # avoid changing the part of the boot code that reads the uncompressed size. | |
496 | # Note that the bytes added by size_append will make the xz tool think that | |
497 | # the file is corrupt. This is expected. | |
498 | # | |
499 | # xzmisc doesn't use size_append, so it can be used to create normal .xz | |
500 | # files. xzmisc uses smaller LZMA2 dictionary than xzkern, because a very | |
501 | # big dictionary would increase the memory usage too much in the multi-call | |
502 | # decompression mode. A BCJ filter isn't used either. | |
503 | quiet_cmd_xzkern = XZKERN $@ | |
7ce7e984 MY |
504 | cmd_xzkern = cat $(real-prereqs) | sh $(srctree)/scripts/xz_wrap.sh > $@ |
505 | ||
506 | quiet_cmd_xzkern_with_size = XZKERN $@ | |
507 | cmd_xzkern_with_size = { cat $(real-prereqs) | sh $(srctree)/scripts/xz_wrap.sh; \ | |
b79c6aa6 | 508 | $(size_append); } > $@ |
24fa0402 LC |
509 | |
510 | quiet_cmd_xzmisc = XZMISC $@ | |
8dfb61dc | 511 | cmd_xzmisc = cat $(real-prereqs) | $(XZ) --check=crc32 --lzma2=dict=1MiB > $@ |
ebf003f0 | 512 | |
48f7ddf7 NT |
513 | # ZSTD |
514 | # --------------------------------------------------------------------------- | |
515 | # Appends the uncompressed size of the data using size_append. The .zst | |
516 | # format has the size information available at the beginning of the file too, | |
517 | # but it's in a more complex format and it's good to avoid changing the part | |
518 | # of the boot code that reads the uncompressed size. | |
519 | # | |
520 | # Note that the bytes added by size_append will make the zstd tool think that | |
521 | # the file is corrupt. This is expected. | |
522 | # | |
523 | # zstd uses a maximum window size of 8 MB. zstd22 uses a maximum window size of | |
524 | # 128 MB. zstd22 is used for kernel compression because it is decompressed in a | |
525 | # single pass, so zstd doesn't need to allocate a window buffer. When streaming | |
526 | # decompression is used, like initramfs decompression, zstd22 should likely not | |
527 | # be used because it would require zstd to allocate a 128 MB buffer. | |
528 | ||
529 | quiet_cmd_zstd = ZSTD $@ | |
64d8aaa4 | 530 | cmd_zstd = cat $(real-prereqs) | $(ZSTD) -19 > $@ |
48f7ddf7 NT |
531 | |
532 | quiet_cmd_zstd22 = ZSTD22 $@ | |
7ce7e984 MY |
533 | cmd_zstd22 = cat $(real-prereqs) | $(ZSTD) -22 --ultra > $@ |
534 | ||
535 | quiet_cmd_zstd22_with_size = ZSTD22 $@ | |
536 | cmd_zstd22_with_size = { cat $(real-prereqs) | $(ZSTD) -22 --ultra; $(size_append); } > $@ | |
48f7ddf7 | 537 | |
ebf003f0 MK |
538 | # ASM offsets |
539 | # --------------------------------------------------------------------------- | |
540 | ||
541 | # Default sed regexp - multiline due to syntax constraints | |
cf0c3e68 JH |
542 | # |
543 | # Use [:space:] because LLVM's integrated assembler inserts <tab> around | |
544 | # the .ascii directive whereas GCC keeps the <space> as-is. | |
ebf003f0 | 545 | define sed-offsets |
cf0c3e68 JH |
546 | 's:^[[:space:]]*\.ascii[[:space:]]*"\(.*\)".*:\1:; \ |
547 | /^->/{s:->#\(.*\):/* \1 */:; \ | |
ebf003f0 | 548 | s:^->\([^ ]*\) [\$$#]*\([^ ]*\) \(.*\):#define \1 \2 /* \3 */:; \ |
cf0c3e68 | 549 | s:->::; p;}' |
ebf003f0 MK |
550 | endef |
551 | ||
552 | # Use filechk to avoid rebuilds when a header changes, but the resulting file | |
553 | # does not | |
554 | define filechk_offsets | |
ebf003f0 MK |
555 | echo "#ifndef $2"; \ |
556 | echo "#define $2"; \ | |
557 | echo "/*"; \ | |
558 | echo " * DO NOT MODIFY."; \ | |
559 | echo " *"; \ | |
560 | echo " * This file was generated by Kbuild"; \ | |
561 | echo " */"; \ | |
562 | echo ""; \ | |
43fee2b2 | 563 | sed -ne $(sed-offsets) < $<; \ |
ebf003f0 | 564 | echo ""; \ |
ad774086 | 565 | echo "#endif" |
ebf003f0 | 566 | endef |