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 | |
24507871 MY |
48 | ifdef need-dtbslist |
49 | dtb-y += $(addsuffix /dtbs-list, $(subdir-ym)) | |
50 | always-y += dtbs-list | |
51 | endif | |
52 | ||
44f87191 MY |
53 | # Expand $(foo-objs) $(foo-y) etc. by replacing their individuals |
54 | suffix-search = $(strip $(foreach s, $3, $($(1:%$(strip $2)=%$s)))) | |
55 | # List composite targets that are constructed by combining other targets | |
56 | multi-search = $(sort $(foreach m, $1, $(if $(call suffix-search, $m, $2, $3 -), $m))) | |
57 | # List primitive targets that are compiled from source files | |
58 | real-search = $(foreach m, $1, $(if $(call suffix-search, $m, $2, $3 -), $(call suffix-search, $m, $2, $3), $m)) | |
59 | ||
33e84f2e | 60 | # If $(foo-objs), $(foo-y), $(foo-m), or $(foo-) exists, foo.o is a composite object |
44f87191 MY |
61 | multi-obj-y := $(call multi-search, $(obj-y), .o, -objs -y) |
62 | multi-obj-m := $(call multi-search, $(obj-m), .o, -objs -y -m) | |
a6601e01 | 63 | multi-obj-ym := $(multi-obj-y) $(multi-obj-m) |
1da177e4 | 64 | |
f98fe47c MY |
65 | # Replace multi-part objects by their individual parts, |
66 | # including built-in.a from subdirectories | |
44f87191 MY |
67 | real-obj-y := $(call real-search, $(obj-y), .o, -objs -y) |
68 | real-obj-m := $(call real-search, $(obj-m), .o, -objs -y -m) | |
1da177e4 | 69 | |
5f2fb52f MY |
70 | always-y += $(always-m) |
71 | ||
faabed29 MY |
72 | # hostprogs-always-y += foo |
73 | # ... is a shorthand for | |
74 | # hostprogs += foo | |
75 | # always-y += foo | |
76 | hostprogs += $(hostprogs-always-y) $(hostprogs-always-m) | |
77 | always-y += $(hostprogs-always-y) $(hostprogs-always-m) | |
78 | ||
79 | # userprogs-always-y is likewise. | |
80 | userprogs += $(userprogs-always-y) $(userprogs-always-m) | |
81 | always-y += $(userprogs-always-y) $(userprogs-always-m) | |
82 | ||
7e7962dd MY |
83 | # DTB |
84 | # If CONFIG_OF_ALL_DTBS is enabled, all DT blobs are built | |
9ca29e41 VK |
85 | dtb-$(CONFIG_OF_ALL_DTBS) += $(dtb-) |
86 | ||
bcf0c664 MY |
87 | # Composite DTB (i.e. DTB constructed by overlay) |
88 | multi-dtb-y := $(call multi-search, $(dtb-y), .dtb, -dtbs) | |
89 | # Primitive DTB compiled from *.dts | |
90 | real-dtb-y := $(call real-search, $(dtb-y), .dtb, -dtbs) | |
cbe826b0 MY |
91 | # Base DTB that overlay is applied onto |
92 | base-dtb-y := $(filter %.dtb, $(call real-search, $(multi-dtb-y), .dtb, -dtbs)) | |
15d16d6d | 93 | |
2047ace9 | 94 | always-y += $(dtb-y) |
7e7962dd | 95 | |
1da177e4 LT |
96 | # Add subdir path |
97 | ||
5750121a | 98 | ifneq ($(obj),.) |
1da177e4 | 99 | extra-y := $(addprefix $(obj)/,$(extra-y)) |
5f2fb52f | 100 | always-y := $(addprefix $(obj)/,$(always-y)) |
1da177e4 | 101 | targets := $(addprefix $(obj)/,$(targets)) |
1da177e4 LT |
102 | obj-m := $(addprefix $(obj)/,$(obj-m)) |
103 | lib-y := $(addprefix $(obj)/,$(lib-y)) | |
f5f33681 MY |
104 | real-obj-y := $(addprefix $(obj)/,$(real-obj-y)) |
105 | real-obj-m := $(addprefix $(obj)/,$(real-obj-m)) | |
a6601e01 | 106 | multi-obj-m := $(addprefix $(obj)/, $(multi-obj-m)) |
24507871 | 107 | dtb-y := $(addprefix $(obj)/, $(dtb-y)) |
bcf0c664 MY |
108 | multi-dtb-y := $(addprefix $(obj)/, $(multi-dtb-y)) |
109 | real-dtb-y := $(addprefix $(obj)/, $(real-dtb-y)) | |
1da177e4 | 110 | subdir-ym := $(addprefix $(obj)/,$(subdir-ym)) |
5750121a | 111 | endif |
1da177e4 | 112 | |
c0152e9a | 113 | # Finds the multi-part object the current object will be linked into. |
1664a377 | 114 | # If the object belongs to two or more multi-part objects, list them all. |
a6601e01 | 115 | modname-multi = $(sort $(foreach m,$(multi-obj-ym),\ |
d4452837 | 116 | $(if $(filter $*.o, $(call suffix-search, $m, .o, -objs -y -m)),$(m:.o=)))) |
c0152e9a | 117 | |
5c816641 | 118 | __modname = $(or $(modname-multi),$(basetarget)) |
1664a377 MY |
119 | |
120 | modname = $(subst $(space),:,$(__modname)) | |
121 | modfile = $(addprefix $(obj)/,$(__modname)) | |
c0152e9a | 122 | |
54b8ae66 MY |
123 | # target with $(obj)/ and its suffix stripped |
124 | target-stem = $(basename $(patsubst $(obj)/%,%,$@)) | |
125 | ||
1da177e4 | 126 | # These flags are needed for modversions and compiling, so we define them here |
8fdc3fbb | 127 | # $(modname_flags) defines KBUILD_MODNAME as the name of the module it will |
1da177e4 | 128 | # end up in (or would, if it gets compiled in) |
a8cccdd9 ST |
129 | name-fix-token = $(subst $(comma),_,$(subst -,_,$1)) |
130 | name-fix = $(call stringify,$(call name-fix-token,$1)) | |
b42841b7 | 131 | basename_flags = -DKBUILD_BASENAME=$(call name-fix,$(basetarget)) |
a8cccdd9 ST |
132 | modname_flags = -DKBUILD_MODNAME=$(call name-fix,$(modname)) \ |
133 | -D__KBUILD_MODNAME=kmod_$(call name-fix-token,$(modname)) | |
1664a377 | 134 | modfile_flags = -DKBUILD_MODFILE=$(call stringify,$(modfile)) |
1da177e4 | 135 | |
15d5761a MY |
136 | _c_flags = $(filter-out $(CFLAGS_REMOVE_$(target-stem).o), \ |
137 | $(filter-out $(ccflags-remove-y), \ | |
138 | $(KBUILD_CPPFLAGS) $(KBUILD_CFLAGS) $(ccflags-y)) \ | |
139 | $(CFLAGS_$(target-stem).o)) | |
2f7ab126 MO |
140 | _rust_flags = $(filter-out $(RUSTFLAGS_REMOVE_$(target-stem).o), \ |
141 | $(filter-out $(rustflags-remove-y), \ | |
142 | $(KBUILD_RUSTFLAGS) $(rustflags-y)) \ | |
143 | $(RUSTFLAGS_$(target-stem).o)) | |
15d5761a MY |
144 | _a_flags = $(filter-out $(AFLAGS_REMOVE_$(target-stem).o), \ |
145 | $(filter-out $(asflags-remove-y), \ | |
146 | $(KBUILD_CPPFLAGS) $(KBUILD_AFLAGS) $(asflags-y)) \ | |
147 | $(AFLAGS_$(target-stem).o)) | |
54b8ae66 | 148 | _cpp_flags = $(KBUILD_CPPFLAGS) $(cppflags-y) $(CPPFLAGS_$(target-stem).lds) |
1da177e4 | 149 | |
2521f2c2 PO |
150 | # |
151 | # Enable gcov profiling flags for a file, directory or for all files depending | |
152 | # on variables GCOV_PROFILE_obj.o, GCOV_PROFILE and CONFIG_GCOV_PROFILE_ALL | |
153 | # (in this order) | |
154 | # | |
155 | ifeq ($(CONFIG_GCOV_KERNEL),y) | |
156 | _c_flags += $(if $(patsubst n%,, \ | |
bf48d9b7 | 157 | $(GCOV_PROFILE_$(target-stem).o)$(GCOV_PROFILE)$(CONFIG_GCOV_PROFILE_ALL)), \ |
2521f2c2 PO |
158 | $(CFLAGS_GCOV)) |
159 | endif | |
160 | ||
0b24becc AR |
161 | # |
162 | # Enable address sanitizer flags for kernel except some files or directories | |
163 | # we don't want to check (depends on variables KASAN_SANITIZE_obj.o, KASAN_SANITIZE) | |
164 | # | |
165 | ifeq ($(CONFIG_KASAN),y) | |
0fea6e9a | 166 | ifneq ($(CONFIG_KASAN_HW_TAGS),y) |
0b24becc | 167 | _c_flags += $(if $(patsubst n%,, \ |
bf48d9b7 | 168 | $(KASAN_SANITIZE_$(target-stem).o)$(KASAN_SANITIZE)y), \ |
0e410e15 | 169 | $(CFLAGS_KASAN), $(CFLAGS_KASAN_NOSANITIZE)) |
0b24becc | 170 | endif |
0fea6e9a | 171 | endif |
0b24becc | 172 | |
f80be457 AP |
173 | ifeq ($(CONFIG_KMSAN),y) |
174 | _c_flags += $(if $(patsubst n%,, \ | |
bf48d9b7 | 175 | $(KMSAN_SANITIZE_$(target-stem).o)$(KMSAN_SANITIZE)y), \ |
f80be457 AP |
176 | $(CFLAGS_KMSAN)) |
177 | _c_flags += $(if $(patsubst n%,, \ | |
bf48d9b7 | 178 | $(KMSAN_ENABLE_CHECKS_$(target-stem).o)$(KMSAN_ENABLE_CHECKS)y), \ |
f80be457 AP |
179 | , -mllvm -msan-disable-checks=1) |
180 | endif | |
181 | ||
c6d30853 AR |
182 | ifeq ($(CONFIG_UBSAN),y) |
183 | _c_flags += $(if $(patsubst n%,, \ | |
1d35aae7 | 184 | $(UBSAN_SANITIZE_$(target-stem).o)$(UBSAN_SANITIZE)y), \ |
c6d30853 | 185 | $(CFLAGS_UBSAN)) |
557f8c58 | 186 | _c_flags += $(if $(patsubst n%,, \ |
1d35aae7 | 187 | $(UBSAN_SIGNED_WRAP_$(target-stem).o)$(UBSAN_SANITIZE_$(target-stem).o)$(UBSAN_SIGNED_WRAP)$(UBSAN_SANITIZE)y), \ |
557f8c58 | 188 | $(CFLAGS_UBSAN_SIGNED_WRAP)) |
c6d30853 AR |
189 | endif |
190 | ||
5c9a8750 DV |
191 | ifeq ($(CONFIG_KCOV),y) |
192 | _c_flags += $(if $(patsubst n%,, \ | |
bf48d9b7 | 193 | $(KCOV_INSTRUMENT_$(target-stem).o)$(KCOV_INSTRUMENT)$(CONFIG_KCOV_INSTRUMENT_ALL)), \ |
5c9a8750 DV |
194 | $(CFLAGS_KCOV)) |
195 | endif | |
196 | ||
dfd402a4 ME |
197 | # |
198 | # Enable KCSAN flags except some files or directories we don't want to check | |
199 | # (depends on variables KCSAN_SANITIZE_obj.o, KCSAN_SANITIZE) | |
200 | # | |
201 | ifeq ($(CONFIG_KCSAN),y) | |
202 | _c_flags += $(if $(patsubst n%,, \ | |
bf48d9b7 | 203 | $(KCSAN_SANITIZE_$(target-stem).o)$(KCSAN_SANITIZE)y), \ |
dfd402a4 | 204 | $(CFLAGS_KCSAN)) |
48c9e28e ME |
205 | # Some uninstrumented files provide implied barriers required to avoid false |
206 | # positives: set KCSAN_INSTRUMENT_BARRIERS for barrier instrumentation only. | |
207 | _c_flags += $(if $(patsubst n%,, \ | |
bf48d9b7 | 208 | $(KCSAN_INSTRUMENT_BARRIERS_$(target-stem).o)$(KCSAN_INSTRUMENT_BARRIERS)n), \ |
48c9e28e | 209 | -D__KCSAN_INSTRUMENT_BARRIERS__) |
dfd402a4 | 210 | endif |
5c9a8750 | 211 | |
cdd750bf MY |
212 | # $(srctree)/$(src) for including checkin headers from generated source files |
213 | # $(objtree)/$(obj) for including generated headers from checkin source files | |
58156ba4 | 214 | ifeq ($(KBUILD_EXTMOD),) |
051f278e | 215 | ifdef building_out_of_srctree |
cdd750bf MY |
216 | _c_flags += -I $(srctree)/$(src) -I $(objtree)/$(obj) |
217 | _a_flags += -I $(srctree)/$(src) -I $(objtree)/$(obj) | |
218 | _cpp_flags += -I $(srctree)/$(src) -I $(objtree)/$(obj) | |
1da177e4 | 219 | endif |
58156ba4 | 220 | endif |
1da177e4 | 221 | |
eb27ea5c MY |
222 | part-of-module = $(if $(filter $(basename $@).o, $(real-obj-m)),y) |
223 | quiet_modtag = $(if $(part-of-module),[M], ) | |
224 | ||
225 | modkern_cflags = \ | |
226 | $(if $(part-of-module), \ | |
227 | $(KBUILD_CFLAGS_MODULE) $(CFLAGS_MODULE), \ | |
1664a377 | 228 | $(KBUILD_CFLAGS_KERNEL) $(CFLAGS_KERNEL) $(modfile_flags)) |
eb27ea5c | 229 | |
2f7ab126 MO |
230 | modkern_rustflags = \ |
231 | $(if $(part-of-module), \ | |
232 | $(KBUILD_RUSTFLAGS_MODULE) $(RUSTFLAGS_MODULE), \ | |
233 | $(KBUILD_RUSTFLAGS_KERNEL) $(RUSTFLAGS_KERNEL)) | |
234 | ||
eb27ea5c MY |
235 | modkern_aflags = $(if $(part-of-module), \ |
236 | $(KBUILD_AFLAGS_MODULE) $(AFLAGS_MODULE), \ | |
237 | $(KBUILD_AFLAGS_KERNEL) $(AFLAGS_KERNEL)) | |
238 | ||
30a77297 | 239 | c_flags = -Wp,-MMD,$(depfile) $(NOSTDINC_FLAGS) $(LINUXINCLUDE) \ |
a95b37e2 | 240 | -include $(srctree)/include/linux/compiler_types.h \ |
cdd750bf | 241 | $(_c_flags) $(modkern_cflags) \ |
b42841b7 | 242 | $(basename_flags) $(modname_flags) |
1da177e4 | 243 | |
2f7ab126 MO |
244 | rust_flags = $(_rust_flags) $(modkern_rustflags) @$(objtree)/include/generated/rustc_cfg |
245 | ||
30a77297 | 246 | a_flags = -Wp,-MMD,$(depfile) $(NOSTDINC_FLAGS) $(LINUXINCLUDE) \ |
cdd750bf | 247 | $(_a_flags) $(modkern_aflags) |
1da177e4 | 248 | |
30a77297 | 249 | cpp_flags = -Wp,-MMD,$(depfile) $(NOSTDINC_FLAGS) $(LINUXINCLUDE) \ |
cdd750bf | 250 | $(_cpp_flags) |
1da177e4 | 251 | |
d503ac53 | 252 | ld_flags = $(KBUILD_LDFLAGS) $(ldflags-y) $(LDFLAGS_$(@F)) |
1da177e4 | 253 | |
50f9ddaf MY |
254 | DTC_INCLUDE := $(srctree)/scripts/dtc/include-prefixes |
255 | ||
30a77297 | 256 | dtc_cpp_flags = -Wp,-MMD,$(depfile).pre.tmp -nostdinc \ |
50f9ddaf | 257 | $(addprefix -I,$(DTC_INCLUDE)) \ |
e570d7c1 SW |
258 | -undef -D__DTS__ |
259 | ||
b42d2306 MY |
260 | ifdef CONFIG_OBJTOOL |
261 | ||
262 | objtool := $(objtree)/tools/objtool/objtool | |
263 | ||
9ec6ab6e MY |
264 | objtool-args-$(CONFIG_HAVE_JUMP_LABEL_HACK) += --hacks=jump_label |
265 | objtool-args-$(CONFIG_HAVE_NOINSTR_HACK) += --hacks=noinstr | |
5fa31af3 | 266 | objtool-args-$(CONFIG_MITIGATION_CALL_DEPTH_TRACKING) += --hacks=skylake |
9ec6ab6e | 267 | objtool-args-$(CONFIG_X86_KERNEL_IBT) += --ibt |
931ab636 | 268 | objtool-args-$(CONFIG_FINEIBT) += --cfi |
9ec6ab6e | 269 | objtool-args-$(CONFIG_FTRACE_MCOUNT_USE_OBJTOOL) += --mcount |
280981d6 SV |
270 | ifdef CONFIG_FTRACE_MCOUNT_USE_OBJTOOL |
271 | objtool-args-$(CONFIG_HAVE_OBJTOOL_NOP_MCOUNT) += --mnop | |
272 | endif | |
9ec6ab6e | 273 | objtool-args-$(CONFIG_UNWINDER_ORC) += --orc |
aefb2f2e | 274 | objtool-args-$(CONFIG_MITIGATION_RETPOLINE) += --retpoline |
0911b8c5 | 275 | objtool-args-$(CONFIG_MITIGATION_RETHUNK) += --rethunk |
7b75782f | 276 | objtool-args-$(CONFIG_MITIGATION_SLS) += --sls |
9ec6ab6e MY |
277 | objtool-args-$(CONFIG_STACK_VALIDATION) += --stackval |
278 | objtool-args-$(CONFIG_HAVE_STATIC_CALL_INLINE) += --static-call | |
279 | objtool-args-$(CONFIG_HAVE_UACCESS_VALIDATION) += --uaccess | |
280 | objtool-args-$(CONFIG_GCOV_KERNEL) += --no-unreachable | |
b341b20d | 281 | objtool-args-$(CONFIG_PREFIX_SYMBOLS) += --prefix=$(CONFIG_FUNCTION_PADDING_BYTES) |
9ec6ab6e MY |
282 | |
283 | objtool-args = $(objtool-args-y) \ | |
b42d2306 | 284 | $(if $(delay-objtool), --link) \ |
9ec6ab6e | 285 | $(if $(part-of-module), --module) |
b42d2306 MY |
286 | |
287 | delay-objtool := $(or $(CONFIG_LTO_CLANG),$(CONFIG_X86_KERNEL_IBT)) | |
288 | ||
9ec6ab6e | 289 | cmd_objtool = $(if $(objtool-enabled), ; $(objtool) $(objtool-args) $@) |
b42d2306 MY |
290 | cmd_gen_objtooldep = $(if $(objtool-enabled), { echo ; echo '$@: $$(wildcard $(objtool))' ; } >> $(dot-target).cmd) |
291 | ||
292 | endif # CONFIG_OBJTOOL | |
293 | ||
c8589d1e MY |
294 | # Useful for describing the dependency of composite objects |
295 | # Usage: | |
296 | # $(call multi_depend, multi_used_targets, suffix_to_remove, suffix_to_add) | |
297 | define multi_depend | |
f97cf399 MY |
298 | $(foreach m, $1, \ |
299 | $(eval $m: \ | |
300 | $(addprefix $(obj)/, $(call suffix-search, $(patsubst $(obj)/%,%,$m), $2, $3)))) | |
c8589d1e MY |
301 | endef |
302 | ||
a5575df5 | 303 | # Copy a file |
1da177e4 | 304 | # =========================================================================== |
3787b7da MY |
305 | # 'cp' preserves permissions. If you use it to copy a file in read-only srctree, |
306 | # the copy would be read-only as well, leading to an error when executing the | |
307 | # rule next time. Use 'cat' instead in order to generate a writable file. | |
a5575df5 MY |
308 | quiet_cmd_copy = COPY $@ |
309 | cmd_copy = cat $< > $@ | |
1da177e4 | 310 | |
991d76c9 | 311 | $(obj)/%: $(src)/%_shipped |
a5575df5 | 312 | $(call cmd,copy) |
1da177e4 LT |
313 | |
314 | # Commands useful for building a boot image | |
315 | # =========================================================================== | |
38385f8f | 316 | # |
1da177e4 LT |
317 | # Use as following: |
318 | # | |
319 | # target: source(s) FORCE | |
320 | # $(if_changed,ld/objcopy/gzip) | |
321 | # | |
2047ace9 | 322 | # and add target to 'targets' so that we know we have to |
1da177e4 LT |
323 | # read in the saved command line |
324 | ||
325 | # Linking | |
326 | # --------------------------------------------------------------------------- | |
327 | ||
328 | quiet_cmd_ld = LD $@ | |
afa974b7 | 329 | cmd_ld = $(LD) $(ld_flags) $(real-prereqs) -o $@ |
1da177e4 | 330 | |
898f5a00 MY |
331 | # Archive |
332 | # --------------------------------------------------------------------------- | |
333 | ||
334 | quiet_cmd_ar = AR $@ | |
13dc8c02 | 335 | cmd_ar = rm -f $@; $(AR) cDPrsT $@ $(real-prereqs) |
898f5a00 | 336 | |
1da177e4 LT |
337 | # Objcopy |
338 | # --------------------------------------------------------------------------- | |
339 | ||
340 | quiet_cmd_objcopy = OBJCOPY $@ | |
341 | cmd_objcopy = $(OBJCOPY) $(OBJCOPYFLAGS) $(OBJCOPYFLAGS_$(@F)) $< $@ | |
342 | ||
343 | # Gzip | |
344 | # --------------------------------------------------------------------------- | |
345 | ||
346 | quiet_cmd_gzip = GZIP $@ | |
e4a42c82 | 347 | cmd_gzip = cat $(real-prereqs) | $(KGZIP) -n -f -9 > $@ |
1da177e4 | 348 | |
aab94339 DB |
349 | # DTC |
350 | # --------------------------------------------------------------------------- | |
6b22b3d1 | 351 | DTC ?= $(objtree)/scripts/dtc/dtc |
a8528f7f | 352 | DTC_FLAGS += \ |
ae5a16c8 | 353 | -Wno-unique_unit_address |
aab94339 | 354 | |
bc553986 | 355 | # Disable noisy checks by default |
e27128db | 356 | ifeq ($(findstring 1,$(KBUILD_EXTRA_WARN)),) |
8654cb8d | 357 | DTC_FLAGS += -Wno-unit_address_vs_reg \ |
4fd98e37 RH |
358 | -Wno-avoid_unnecessary_addr_size \ |
359 | -Wno-alias_paths \ | |
74656b68 | 360 | -Wno-graph_child_address \ |
ae5a16c8 AT |
361 | -Wno-simple_bus_reg |
362 | else | |
363 | DTC_FLAGS += \ | |
364 | -Wunique_unit_address_if_enabled | |
bc553986 RH |
365 | endif |
366 | ||
e27128db | 367 | ifneq ($(findstring 2,$(KBUILD_EXTRA_WARN)),) |
8654cb8d | 368 | DTC_FLAGS += -Wnode_name_chars_strict \ |
3eb619b2 | 369 | -Wproperty_name_chars_strict \ |
ae5a16c8 | 370 | -Wunique_unit_address |
bc553986 RH |
371 | endif |
372 | ||
223390b1 | 373 | DTC_FLAGS += $(DTC_FLAGS_$(target-stem)) |
331f7416 | 374 | |
bcf0c664 MY |
375 | # Set -@ if the target is a base DTB that overlay is applied onto |
376 | DTC_FLAGS += $(if $(filter $(patsubst $(obj)/%,%,$@), $(base-dtb-y)), -@) | |
377 | ||
aab94339 | 378 | # Generate an assembly file to wrap the output of the device tree compiler |
ecd42fba MY |
379 | quiet_cmd_wrap_S_dtb = WRAP $@ |
380 | cmd_wrap_S_dtb = { \ | |
381 | symbase=__$(patsubst .%,%,$(suffix $<))_$(subst -,_,$(notdir $*)); \ | |
382 | echo '\#include <asm-generic/vmlinux.lds.h>'; \ | |
383 | echo '.section .dtb.init.rodata,"a"'; \ | |
384 | echo '.balign STRUCT_ALIGNMENT'; \ | |
385 | echo ".global $${symbase}_begin"; \ | |
386 | echo "$${symbase}_begin:"; \ | |
387 | echo '.incbin "$<" '; \ | |
388 | echo ".global $${symbase}_end"; \ | |
389 | echo "$${symbase}_end:"; \ | |
390 | echo '.balign STRUCT_ALIGNMENT'; \ | |
391 | } > $@ | |
aab94339 | 392 | |
a7f92419 | 393 | $(obj)/%.dtb.S: $(obj)/%.dtb FORCE |
ecd42fba | 394 | $(call if_changed,wrap_S_dtb) |
941214a5 AD |
395 | |
396 | $(obj)/%.dtbo.S: $(obj)/%.dtbo FORCE | |
ecd42fba | 397 | $(call if_changed,wrap_S_dtb) |
aab94339 DB |
398 | |
399 | quiet_cmd_dtc = DTC $@ | |
dd7699e3 | 400 | cmd_dtc = $(HOSTCC) -E $(dtc_cpp_flags) -x assembler-with-cpp -o $(dtc-tmp) $< ; \ |
64bfc994 | 401 | $(DTC) -o $@ -b 0 \ |
50f9ddaf | 402 | $(addprefix -i,$(dir $<) $(DTC_INCLUDE)) $(DTC_FLAGS) \ |
b0a4d8b3 IC |
403 | -d $(depfile).dtc.tmp $(dtc-tmp) ; \ |
404 | cat $(depfile).pre.tmp $(depfile).dtc.tmp > $(depfile) | |
1da177e4 | 405 | |
15d16d6d RH |
406 | quiet_cmd_fdtoverlay = DTOVL $@ |
407 | cmd_fdtoverlay = $(objtree)/scripts/dtc/fdtoverlay -o $@ -i $(real-prereqs) | |
408 | ||
bcf0c664 | 409 | $(multi-dtb-y): FORCE |
15d16d6d | 410 | $(call if_changed,fdtoverlay) |
bcf0c664 | 411 | $(call multi_depend, $(multi-dtb-y), .dtb, -dtbs) |
15d16d6d | 412 | |
ef8795f3 | 413 | ifneq ($(CHECK_DTBS)$(CHECK_DT_BINDING),) |
4f0e3a57 | 414 | DT_CHECKER ?= dt-validate |
2783a7f5 | 415 | DT_CHECKER_FLAGS ?= $(if $(DT_SCHEMA_FILES),-l $(DT_SCHEMA_FILES),-m) |
4f0e3a57 | 416 | DT_BINDING_DIR := Documentation/devicetree/bindings |
2783a7f5 | 417 | DT_TMP_SCHEMA := $(objtree)/$(DT_BINDING_DIR)/processed-schema.json |
4f0e3a57 | 418 | |
d7c6ea02 DB |
419 | quiet_cmd_dtb = DTC_CHK $@ |
420 | cmd_dtb = $(cmd_dtc) ; $(DT_CHECKER) $(DT_CHECKER_FLAGS) -u $(srctree)/$(DT_BINDING_DIR) -p $(DT_TMP_SCHEMA) $@ || true | |
421 | else | |
422 | quiet_cmd_dtb = $(quiet_cmd_dtc) | |
423 | cmd_dtb = $(cmd_dtc) | |
ef8795f3 | 424 | endif |
4f0e3a57 | 425 | |
ef8795f3 | 426 | $(obj)/%.dtb: $(src)/%.dts $(DTC) $(DT_TMP_SCHEMA) FORCE |
d7c6ea02 | 427 | $(call if_changed_dep,dtb) |
90b335fb | 428 | |
363547d2 AD |
429 | $(obj)/%.dtbo: $(src)/%.dtso $(DTC) FORCE |
430 | $(call if_changed_dep,dtc) | |
431 | ||
b0a4d8b3 | 432 | dtc-tmp = $(subst $(comma),_,$(dot-target).dts.tmp) |
22435f38 | 433 | |
bc22c17e AK |
434 | # Bzip2 |
435 | # --------------------------------------------------------------------------- | |
436 | ||
d3dd3b5a PA |
437 | # Bzip2 and LZMA do not include size in file... so we have to fake that; |
438 | # append the size as a 32-bit littleendian number as gzip does. | |
4a2ff67c | 439 | size_append = printf $(shell \ |
d3dd3b5a | 440 | dec_size=0; \ |
afa974b7 | 441 | for F in $(real-prereqs); do \ |
a670b0b4 | 442 | fsize=$$($(CONFIG_SHELL) $(srctree)/scripts/file-size.sh $$F); \ |
d3dd3b5a PA |
443 | dec_size=$$(expr $$dec_size + $$fsize); \ |
444 | done; \ | |
1373411a JN |
445 | printf "%08x\n" $$dec_size | \ |
446 | sed 's/\(..\)/\1 /g' | { \ | |
447 | read ch0 ch1 ch2 ch3; \ | |
448 | for ch in $$ch3 $$ch2 $$ch1 $$ch0; do \ | |
449 | printf '%s%03o' '\\' $$((0x$$ch)); \ | |
450 | done; \ | |
451 | } \ | |
d3dd3b5a PA |
452 | ) |
453 | ||
c4d7f40b MY |
454 | quiet_cmd_file_size = GEN $@ |
455 | cmd_file_size = $(size_append) > $@ | |
456 | ||
d3dd3b5a | 457 | quiet_cmd_bzip2 = BZIP2 $@ |
7ce7e984 MY |
458 | cmd_bzip2 = cat $(real-prereqs) | $(KBZIP2) -9 > $@ |
459 | ||
460 | quiet_cmd_bzip2_with_size = BZIP2 $@ | |
461 | cmd_bzip2_with_size = { cat $(real-prereqs) | $(KBZIP2) -9; $(size_append); } > $@ | |
bc22c17e AK |
462 | |
463 | # Lzma | |
464 | # --------------------------------------------------------------------------- | |
465 | ||
466 | quiet_cmd_lzma = LZMA $@ | |
7ce7e984 MY |
467 | cmd_lzma = cat $(real-prereqs) | $(LZMA) -9 > $@ |
468 | ||
469 | quiet_cmd_lzma_with_size = LZMA $@ | |
470 | cmd_lzma_with_size = { cat $(real-prereqs) | $(LZMA) -9; $(size_append); } > $@ | |
7dd65feb | 471 | |
2d74b2c6 | 472 | quiet_cmd_lzo = LZO $@ |
7ce7e984 MY |
473 | cmd_lzo = cat $(real-prereqs) | $(KLZOP) -9 > $@ |
474 | ||
475 | quiet_cmd_lzo_with_size = LZO $@ | |
476 | cmd_lzo_with_size = { cat $(real-prereqs) | $(KLZOP) -9; $(size_append); } > $@ | |
d61931d8 | 477 | |
e76e1fdf | 478 | quiet_cmd_lz4 = LZ4 $@ |
7ce7e984 MY |
479 | cmd_lz4 = cat $(real-prereqs) | $(LZ4) -l -c1 stdin stdout > $@ |
480 | ||
481 | quiet_cmd_lz4_with_size = LZ4 $@ | |
482 | cmd_lz4_with_size = { cat $(real-prereqs) | $(LZ4) -l -c1 stdin stdout; \ | |
b79c6aa6 | 483 | $(size_append); } > $@ |
e76e1fdf | 484 | |
e3393645 SW |
485 | # U-Boot mkimage |
486 | # --------------------------------------------------------------------------- | |
487 | ||
488 | MKIMAGE := $(srctree)/scripts/mkuboot.sh | |
489 | ||
490 | # SRCARCH just happens to match slightly more than ARCH (on sparc), so reduces | |
491 | # the number of overrides in arch makefiles | |
492 | UIMAGE_ARCH ?= $(SRCARCH) | |
5c816641 | 493 | UIMAGE_COMPRESSION ?= $(or $(2),none) |
e3393645 SW |
494 | UIMAGE_OPTS-y ?= |
495 | UIMAGE_TYPE ?= kernel | |
496 | UIMAGE_LOADADDR ?= arch_must_set_this | |
497 | UIMAGE_ENTRYADDR ?= $(UIMAGE_LOADADDR) | |
76020731 | 498 | UIMAGE_NAME ?= Linux-$(KERNELRELEASE) |
e3393645 | 499 | |
786ac51a | 500 | quiet_cmd_uimage = UIMAGE $@ |
858805b3 | 501 | cmd_uimage = $(BASH) $(MKIMAGE) -A $(UIMAGE_ARCH) -O linux \ |
e3393645 SW |
502 | -C $(UIMAGE_COMPRESSION) $(UIMAGE_OPTS-y) \ |
503 | -T $(UIMAGE_TYPE) \ | |
504 | -a $(UIMAGE_LOADADDR) -e $(UIMAGE_ENTRYADDR) \ | |
76020731 | 505 | -n '$(UIMAGE_NAME)' -d $< $@ |
e3393645 | 506 | |
7a23b027 SG |
507 | # Flat Image Tree (FIT) |
508 | # This allows for packaging of a kernel and all devicetrees files, using | |
509 | # compression. | |
510 | # --------------------------------------------------------------------------- | |
511 | ||
512 | MAKE_FIT := $(srctree)/scripts/make_fit.py | |
513 | ||
514 | # Use this to override the compression algorithm | |
515 | FIT_COMPRESSION ?= gzip | |
516 | ||
517 | quiet_cmd_fit = FIT $@ | |
518 | cmd_fit = $(MAKE_FIT) -o $@ --arch $(UIMAGE_ARCH) --os linux \ | |
519 | --name '$(UIMAGE_NAME)' \ | |
520 | $(if $(findstring 1,$(KBUILD_VERBOSE)),-v) \ | |
521 | --compress $(FIT_COMPRESSION) -k $< @$(word 2,$^) | |
522 | ||
24fa0402 LC |
523 | # XZ |
524 | # --------------------------------------------------------------------------- | |
525 | # Use xzkern to compress the kernel image and xzmisc to compress other things. | |
526 | # | |
527 | # xzkern uses a big LZMA2 dictionary since it doesn't increase memory usage | |
528 | # of the kernel decompressor. A BCJ filter is used if it is available for | |
529 | # the target architecture. xzkern also appends uncompressed size of the data | |
530 | # using size_append. The .xz format has the size information available at | |
531 | # the end of the file too, but it's in more complex format and it's good to | |
532 | # avoid changing the part of the boot code that reads the uncompressed size. | |
533 | # Note that the bytes added by size_append will make the xz tool think that | |
534 | # the file is corrupt. This is expected. | |
535 | # | |
536 | # xzmisc doesn't use size_append, so it can be used to create normal .xz | |
537 | # files. xzmisc uses smaller LZMA2 dictionary than xzkern, because a very | |
538 | # big dictionary would increase the memory usage too much in the multi-call | |
539 | # decompression mode. A BCJ filter isn't used either. | |
540 | quiet_cmd_xzkern = XZKERN $@ | |
7ce7e984 MY |
541 | cmd_xzkern = cat $(real-prereqs) | sh $(srctree)/scripts/xz_wrap.sh > $@ |
542 | ||
543 | quiet_cmd_xzkern_with_size = XZKERN $@ | |
544 | cmd_xzkern_with_size = { cat $(real-prereqs) | sh $(srctree)/scripts/xz_wrap.sh; \ | |
b79c6aa6 | 545 | $(size_append); } > $@ |
24fa0402 LC |
546 | |
547 | quiet_cmd_xzmisc = XZMISC $@ | |
8dfb61dc | 548 | cmd_xzmisc = cat $(real-prereqs) | $(XZ) --check=crc32 --lzma2=dict=1MiB > $@ |
ebf003f0 | 549 | |
48f7ddf7 NT |
550 | # ZSTD |
551 | # --------------------------------------------------------------------------- | |
552 | # Appends the uncompressed size of the data using size_append. The .zst | |
553 | # format has the size information available at the beginning of the file too, | |
554 | # but it's in a more complex format and it's good to avoid changing the part | |
555 | # of the boot code that reads the uncompressed size. | |
556 | # | |
557 | # Note that the bytes added by size_append will make the zstd tool think that | |
558 | # the file is corrupt. This is expected. | |
559 | # | |
560 | # zstd uses a maximum window size of 8 MB. zstd22 uses a maximum window size of | |
561 | # 128 MB. zstd22 is used for kernel compression because it is decompressed in a | |
562 | # single pass, so zstd doesn't need to allocate a window buffer. When streaming | |
563 | # decompression is used, like initramfs decompression, zstd22 should likely not | |
564 | # be used because it would require zstd to allocate a 128 MB buffer. | |
565 | ||
566 | quiet_cmd_zstd = ZSTD $@ | |
64d8aaa4 | 567 | cmd_zstd = cat $(real-prereqs) | $(ZSTD) -19 > $@ |
48f7ddf7 NT |
568 | |
569 | quiet_cmd_zstd22 = ZSTD22 $@ | |
7ce7e984 MY |
570 | cmd_zstd22 = cat $(real-prereqs) | $(ZSTD) -22 --ultra > $@ |
571 | ||
572 | quiet_cmd_zstd22_with_size = ZSTD22 $@ | |
573 | cmd_zstd22_with_size = { cat $(real-prereqs) | $(ZSTD) -22 --ultra; $(size_append); } > $@ | |
48f7ddf7 | 574 | |
ebf003f0 MK |
575 | # ASM offsets |
576 | # --------------------------------------------------------------------------- | |
577 | ||
578 | # Default sed regexp - multiline due to syntax constraints | |
cf0c3e68 JH |
579 | # |
580 | # Use [:space:] because LLVM's integrated assembler inserts <tab> around | |
581 | # the .ascii directive whereas GCC keeps the <space> as-is. | |
ebf003f0 | 582 | define sed-offsets |
cf0c3e68 JH |
583 | 's:^[[:space:]]*\.ascii[[:space:]]*"\(.*\)".*:\1:; \ |
584 | /^->/{s:->#\(.*\):/* \1 */:; \ | |
ebf003f0 | 585 | s:^->\([^ ]*\) [\$$#]*\([^ ]*\) \(.*\):#define \1 \2 /* \3 */:; \ |
cf0c3e68 | 586 | s:->::; p;}' |
ebf003f0 MK |
587 | endef |
588 | ||
589 | # Use filechk to avoid rebuilds when a header changes, but the resulting file | |
590 | # does not | |
591 | define filechk_offsets | |
ebf003f0 MK |
592 | echo "#ifndef $2"; \ |
593 | echo "#define $2"; \ | |
594 | echo "/*"; \ | |
595 | echo " * DO NOT MODIFY."; \ | |
596 | echo " *"; \ | |
597 | echo " * This file was generated by Kbuild"; \ | |
598 | echo " */"; \ | |
599 | echo ""; \ | |
43fee2b2 | 600 | sed -ne $(sed-offsets) < $<; \ |
ebf003f0 | 601 | echo ""; \ |
ad774086 | 602 | echo "#endif" |
ebf003f0 | 603 | endef |