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Commit | Line | Data |
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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) | |
720097d8 | 11 | |
1da177e4 LT |
12 | # Figure out what we need to build from the various variables |
13 | # =========================================================================== | |
14 | ||
15 | # When an object is listed to be built compiled-in and modular, | |
16 | # only build the compiled-in version | |
1da177e4 LT |
17 | obj-m := $(filter-out $(obj-y),$(obj-m)) |
18 | ||
19 | # Libraries are always collected in one lib file. | |
20 | # Filter out objects already built-in | |
1da177e4 LT |
21 | lib-y := $(filter-out $(obj-y), $(sort $(lib-y) $(lib-m))) |
22 | ||
0a8820e7 MY |
23 | # Subdirectories we need to descend into |
24 | subdir-ym := $(sort $(subdir-y) $(subdir-m) \ | |
25 | $(patsubst %/,%, $(filter %/, $(obj-y) $(obj-m)))) | |
26 | ||
b2c88554 MY |
27 | # Handle objects in subdirs: |
28 | # - If we encounter foo/ in $(obj-y), replace it by foo/built-in.a and | |
29 | # foo/modules.order | |
30 | # - If we encounter foo/ in $(obj-m), replace it by foo/modules.order | |
31 | # | |
32 | # Generate modules.order to determine modorder. Unfortunately, we don't have | |
33 | # information about ordering between -y and -m subdirs. Just put -y's first. | |
34 | ||
35 | ifdef need-modorder | |
36 | obj-m := $(patsubst %/,%/modules.order, $(filter %/, $(obj-y)) $(obj-m)) | |
37 | else | |
38 | obj-m := $(filter-out %/, $(obj-m)) | |
39 | endif | |
40 | ||
56d58936 | 41 | ifdef need-builtin |
f49821ee | 42 | obj-y := $(patsubst %/, %/built-in.a, $(obj-y)) |
56d58936 MY |
43 | else |
44 | obj-y := $(filter-out %/, $(obj-y)) | |
45 | endif | |
1da177e4 | 46 | |
44f87191 MY |
47 | # Expand $(foo-objs) $(foo-y) etc. by replacing their individuals |
48 | suffix-search = $(strip $(foreach s, $3, $($(1:%$(strip $2)=%$s)))) | |
49 | # List composite targets that are constructed by combining other targets | |
50 | multi-search = $(sort $(foreach m, $1, $(if $(call suffix-search, $m, $2, $3 -), $m))) | |
51 | # List primitive targets that are compiled from source files | |
52 | real-search = $(foreach m, $1, $(if $(call suffix-search, $m, $2, $3 -), $(call suffix-search, $m, $2, $3), $m)) | |
53 | ||
33e84f2e | 54 | # If $(foo-objs), $(foo-y), $(foo-m), or $(foo-) exists, foo.o is a composite object |
44f87191 MY |
55 | multi-obj-y := $(call multi-search, $(obj-y), .o, -objs -y) |
56 | multi-obj-m := $(call multi-search, $(obj-m), .o, -objs -y -m) | |
a6601e01 | 57 | multi-obj-ym := $(multi-obj-y) $(multi-obj-m) |
1da177e4 | 58 | |
f98fe47c MY |
59 | # Replace multi-part objects by their individual parts, |
60 | # including built-in.a from subdirectories | |
44f87191 MY |
61 | real-obj-y := $(call real-search, $(obj-y), .o, -objs -y) |
62 | real-obj-m := $(call real-search, $(obj-m), .o, -objs -y -m) | |
1da177e4 | 63 | |
5f2fb52f MY |
64 | always-y += $(always-m) |
65 | ||
faabed29 MY |
66 | # hostprogs-always-y += foo |
67 | # ... is a shorthand for | |
68 | # hostprogs += foo | |
69 | # always-y += foo | |
70 | hostprogs += $(hostprogs-always-y) $(hostprogs-always-m) | |
71 | always-y += $(hostprogs-always-y) $(hostprogs-always-m) | |
72 | ||
73 | # userprogs-always-y is likewise. | |
74 | userprogs += $(userprogs-always-y) $(userprogs-always-m) | |
75 | always-y += $(userprogs-always-y) $(userprogs-always-m) | |
76 | ||
7e7962dd MY |
77 | # DTB |
78 | # If CONFIG_OF_ALL_DTBS is enabled, all DT blobs are built | |
9ca29e41 VK |
79 | dtb-$(CONFIG_OF_ALL_DTBS) += $(dtb-) |
80 | ||
bcf0c664 MY |
81 | # Composite DTB (i.e. DTB constructed by overlay) |
82 | multi-dtb-y := $(call multi-search, $(dtb-y), .dtb, -dtbs) | |
83 | # Primitive DTB compiled from *.dts | |
84 | real-dtb-y := $(call real-search, $(dtb-y), .dtb, -dtbs) | |
85 | # Base DTB that overlay is applied onto (each first word of $(*-dtbs) expansion) | |
86 | base-dtb-y := $(foreach m, $(multi-dtb-y), $(firstword $(call suffix-search, $m, .dtb, -dtbs))) | |
15d16d6d | 87 | |
2047ace9 | 88 | always-y += $(dtb-y) |
7e7962dd | 89 | |
4f0e3a57 | 90 | ifneq ($(CHECK_DTBS),) |
bcf0c664 MY |
91 | always-y += $(patsubst %.dtb,%.dt.yaml, $(real-dtb-y)) |
92 | always-y += $(patsubst %.dtbo,%.dt.yaml, $(real-dtb-y)) | |
4f0e3a57 RH |
93 | endif |
94 | ||
1da177e4 LT |
95 | # Add subdir path |
96 | ||
97 | extra-y := $(addprefix $(obj)/,$(extra-y)) | |
5f2fb52f | 98 | always-y := $(addprefix $(obj)/,$(always-y)) |
1da177e4 | 99 | targets := $(addprefix $(obj)/,$(targets)) |
1da177e4 LT |
100 | obj-m := $(addprefix $(obj)/,$(obj-m)) |
101 | lib-y := $(addprefix $(obj)/,$(lib-y)) | |
f5f33681 MY |
102 | real-obj-y := $(addprefix $(obj)/,$(real-obj-y)) |
103 | real-obj-m := $(addprefix $(obj)/,$(real-obj-m)) | |
a6601e01 | 104 | multi-obj-m := $(addprefix $(obj)/, $(multi-obj-m)) |
bcf0c664 MY |
105 | multi-dtb-y := $(addprefix $(obj)/, $(multi-dtb-y)) |
106 | real-dtb-y := $(addprefix $(obj)/, $(real-dtb-y)) | |
1da177e4 | 107 | subdir-ym := $(addprefix $(obj)/,$(subdir-ym)) |
1da177e4 | 108 | |
c0152e9a | 109 | # Finds the multi-part object the current object will be linked into. |
1664a377 | 110 | # If the object belongs to two or more multi-part objects, list them all. |
a6601e01 | 111 | modname-multi = $(sort $(foreach m,$(multi-obj-ym),\ |
d4452837 | 112 | $(if $(filter $*.o, $(call suffix-search, $m, .o, -objs -y -m)),$(m:.o=)))) |
c0152e9a | 113 | |
1664a377 MY |
114 | __modname = $(if $(modname-multi),$(modname-multi),$(basetarget)) |
115 | ||
116 | modname = $(subst $(space),:,$(__modname)) | |
117 | modfile = $(addprefix $(obj)/,$(__modname)) | |
c0152e9a | 118 | |
54b8ae66 MY |
119 | # target with $(obj)/ and its suffix stripped |
120 | target-stem = $(basename $(patsubst $(obj)/%,%,$@)) | |
121 | ||
1da177e4 | 122 | # These flags are needed for modversions and compiling, so we define them here |
8fdc3fbb | 123 | # $(modname_flags) defines KBUILD_MODNAME as the name of the module it will |
1da177e4 | 124 | # end up in (or would, if it gets compiled in) |
a8cccdd9 ST |
125 | name-fix-token = $(subst $(comma),_,$(subst -,_,$1)) |
126 | name-fix = $(call stringify,$(call name-fix-token,$1)) | |
b42841b7 | 127 | basename_flags = -DKBUILD_BASENAME=$(call name-fix,$(basetarget)) |
a8cccdd9 ST |
128 | modname_flags = -DKBUILD_MODNAME=$(call name-fix,$(modname)) \ |
129 | -D__KBUILD_MODNAME=kmod_$(call name-fix-token,$(modname)) | |
1664a377 | 130 | modfile_flags = -DKBUILD_MODFILE=$(call stringify,$(modfile)) |
1da177e4 | 131 | |
15d5761a MY |
132 | _c_flags = $(filter-out $(CFLAGS_REMOVE_$(target-stem).o), \ |
133 | $(filter-out $(ccflags-remove-y), \ | |
134 | $(KBUILD_CPPFLAGS) $(KBUILD_CFLAGS) $(ccflags-y)) \ | |
135 | $(CFLAGS_$(target-stem).o)) | |
136 | _a_flags = $(filter-out $(AFLAGS_REMOVE_$(target-stem).o), \ | |
137 | $(filter-out $(asflags-remove-y), \ | |
138 | $(KBUILD_CPPFLAGS) $(KBUILD_AFLAGS) $(asflags-y)) \ | |
139 | $(AFLAGS_$(target-stem).o)) | |
54b8ae66 | 140 | _cpp_flags = $(KBUILD_CPPFLAGS) $(cppflags-y) $(CPPFLAGS_$(target-stem).lds) |
1da177e4 | 141 | |
2521f2c2 PO |
142 | # |
143 | # Enable gcov profiling flags for a file, directory or for all files depending | |
144 | # on variables GCOV_PROFILE_obj.o, GCOV_PROFILE and CONFIG_GCOV_PROFILE_ALL | |
145 | # (in this order) | |
146 | # | |
147 | ifeq ($(CONFIG_GCOV_KERNEL),y) | |
148 | _c_flags += $(if $(patsubst n%,, \ | |
149 | $(GCOV_PROFILE_$(basetarget).o)$(GCOV_PROFILE)$(CONFIG_GCOV_PROFILE_ALL)), \ | |
150 | $(CFLAGS_GCOV)) | |
151 | endif | |
152 | ||
0b24becc AR |
153 | # |
154 | # Enable address sanitizer flags for kernel except some files or directories | |
155 | # we don't want to check (depends on variables KASAN_SANITIZE_obj.o, KASAN_SANITIZE) | |
156 | # | |
157 | ifeq ($(CONFIG_KASAN),y) | |
0fea6e9a | 158 | ifneq ($(CONFIG_KASAN_HW_TAGS),y) |
0b24becc AR |
159 | _c_flags += $(if $(patsubst n%,, \ |
160 | $(KASAN_SANITIZE_$(basetarget).o)$(KASAN_SANITIZE)y), \ | |
0e410e15 | 161 | $(CFLAGS_KASAN), $(CFLAGS_KASAN_NOSANITIZE)) |
0b24becc | 162 | endif |
0fea6e9a | 163 | endif |
0b24becc | 164 | |
c6d30853 AR |
165 | ifeq ($(CONFIG_UBSAN),y) |
166 | _c_flags += $(if $(patsubst n%,, \ | |
167 | $(UBSAN_SANITIZE_$(basetarget).o)$(UBSAN_SANITIZE)$(CONFIG_UBSAN_SANITIZE_ALL)), \ | |
168 | $(CFLAGS_UBSAN)) | |
169 | endif | |
170 | ||
5c9a8750 DV |
171 | ifeq ($(CONFIG_KCOV),y) |
172 | _c_flags += $(if $(patsubst n%,, \ | |
a4691dea | 173 | $(KCOV_INSTRUMENT_$(basetarget).o)$(KCOV_INSTRUMENT)$(CONFIG_KCOV_INSTRUMENT_ALL)), \ |
5c9a8750 DV |
174 | $(CFLAGS_KCOV)) |
175 | endif | |
176 | ||
dfd402a4 ME |
177 | # |
178 | # Enable KCSAN flags except some files or directories we don't want to check | |
179 | # (depends on variables KCSAN_SANITIZE_obj.o, KCSAN_SANITIZE) | |
180 | # | |
181 | ifeq ($(CONFIG_KCSAN),y) | |
182 | _c_flags += $(if $(patsubst n%,, \ | |
183 | $(KCSAN_SANITIZE_$(basetarget).o)$(KCSAN_SANITIZE)y), \ | |
184 | $(CFLAGS_KCSAN)) | |
185 | endif | |
5c9a8750 | 186 | |
cdd750bf MY |
187 | # $(srctree)/$(src) for including checkin headers from generated source files |
188 | # $(objtree)/$(obj) for including generated headers from checkin source files | |
58156ba4 | 189 | ifeq ($(KBUILD_EXTMOD),) |
051f278e | 190 | ifdef building_out_of_srctree |
cdd750bf MY |
191 | _c_flags += -I $(srctree)/$(src) -I $(objtree)/$(obj) |
192 | _a_flags += -I $(srctree)/$(src) -I $(objtree)/$(obj) | |
193 | _cpp_flags += -I $(srctree)/$(src) -I $(objtree)/$(obj) | |
1da177e4 | 194 | endif |
58156ba4 | 195 | endif |
1da177e4 | 196 | |
eb27ea5c MY |
197 | part-of-module = $(if $(filter $(basename $@).o, $(real-obj-m)),y) |
198 | quiet_modtag = $(if $(part-of-module),[M], ) | |
199 | ||
200 | modkern_cflags = \ | |
201 | $(if $(part-of-module), \ | |
202 | $(KBUILD_CFLAGS_MODULE) $(CFLAGS_MODULE), \ | |
1664a377 | 203 | $(KBUILD_CFLAGS_KERNEL) $(CFLAGS_KERNEL) $(modfile_flags)) |
eb27ea5c MY |
204 | |
205 | modkern_aflags = $(if $(part-of-module), \ | |
206 | $(KBUILD_AFLAGS_MODULE) $(AFLAGS_MODULE), \ | |
207 | $(KBUILD_AFLAGS_KERNEL) $(AFLAGS_KERNEL)) | |
208 | ||
30a77297 | 209 | c_flags = -Wp,-MMD,$(depfile) $(NOSTDINC_FLAGS) $(LINUXINCLUDE) \ |
a95b37e2 | 210 | -include $(srctree)/include/linux/compiler_types.h \ |
cdd750bf | 211 | $(_c_flags) $(modkern_cflags) \ |
b42841b7 | 212 | $(basename_flags) $(modname_flags) |
1da177e4 | 213 | |
30a77297 | 214 | a_flags = -Wp,-MMD,$(depfile) $(NOSTDINC_FLAGS) $(LINUXINCLUDE) \ |
cdd750bf | 215 | $(_a_flags) $(modkern_aflags) |
1da177e4 | 216 | |
30a77297 | 217 | cpp_flags = -Wp,-MMD,$(depfile) $(NOSTDINC_FLAGS) $(LINUXINCLUDE) \ |
cdd750bf | 218 | $(_cpp_flags) |
1da177e4 | 219 | |
d503ac53 | 220 | ld_flags = $(KBUILD_LDFLAGS) $(ldflags-y) $(LDFLAGS_$(@F)) |
1da177e4 | 221 | |
50f9ddaf MY |
222 | DTC_INCLUDE := $(srctree)/scripts/dtc/include-prefixes |
223 | ||
30a77297 | 224 | dtc_cpp_flags = -Wp,-MMD,$(depfile).pre.tmp -nostdinc \ |
50f9ddaf | 225 | $(addprefix -I,$(DTC_INCLUDE)) \ |
e570d7c1 SW |
226 | -undef -D__DTS__ |
227 | ||
850ded46 ST |
228 | ifeq ($(CONFIG_LTO_CLANG),y) |
229 | # With CONFIG_LTO_CLANG, .o files in modules might be LLVM bitcode, so we | |
230 | # need to run LTO to compile them into native code (.lto.o) before further | |
231 | # processing. | |
232 | mod-prelink-ext := .lto | |
233 | endif | |
234 | ||
b1a1a1a0 ST |
235 | # Objtool arguments are also needed for modfinal with LTO, so we define |
236 | # then here to avoid duplication. | |
237 | objtool_args = \ | |
238 | $(if $(CONFIG_UNWINDER_ORC),orc generate,check) \ | |
44815c90 | 239 | $(if $(part-of-module), --module) \ |
b1a1a1a0 | 240 | $(if $(CONFIG_FRAME_POINTER),, --no-fp) \ |
44815c90 MY |
241 | $(if $(CONFIG_GCOV_KERNEL)$(CONFIG_LTO_CLANG), --no-unreachable)\ |
242 | $(if $(CONFIG_RETPOLINE), --retpoline) \ | |
243 | $(if $(CONFIG_X86_SMAP), --uaccess) \ | |
244 | $(if $(CONFIG_FTRACE_MCOUNT_USE_OBJTOOL), --mcount) | |
b1a1a1a0 | 245 | |
c8589d1e MY |
246 | # Useful for describing the dependency of composite objects |
247 | # Usage: | |
248 | # $(call multi_depend, multi_used_targets, suffix_to_remove, suffix_to_add) | |
249 | define multi_depend | |
250 | $(foreach m, $(notdir $1), \ | |
251 | $(eval $(obj)/$m: \ | |
252 | $(addprefix $(obj)/, $(foreach s, $3, $($(m:%$(strip $2)=%$(s))))))) | |
253 | endef | |
254 | ||
dee9c0b5 MY |
255 | quiet_cmd_copy = COPY $@ |
256 | cmd_copy = cp $< $@ | |
257 | ||
1da177e4 LT |
258 | # Shipped files |
259 | # =========================================================================== | |
3787b7da MY |
260 | # 'cp' preserves permissions. If you use it to copy a file in read-only srctree, |
261 | # the copy would be read-only as well, leading to an error when executing the | |
262 | # rule next time. Use 'cat' instead in order to generate a writable file. | |
1da177e4 LT |
263 | |
264 | quiet_cmd_shipped = SHIPPED $@ | |
265 | cmd_shipped = cat $< > $@ | |
266 | ||
991d76c9 | 267 | $(obj)/%: $(src)/%_shipped |
1da177e4 LT |
268 | $(call cmd,shipped) |
269 | ||
270 | # Commands useful for building a boot image | |
271 | # =========================================================================== | |
38385f8f | 272 | # |
1da177e4 LT |
273 | # Use as following: |
274 | # | |
275 | # target: source(s) FORCE | |
276 | # $(if_changed,ld/objcopy/gzip) | |
277 | # | |
2047ace9 | 278 | # and add target to 'targets' so that we know we have to |
1da177e4 LT |
279 | # read in the saved command line |
280 | ||
281 | # Linking | |
282 | # --------------------------------------------------------------------------- | |
283 | ||
284 | quiet_cmd_ld = LD $@ | |
afa974b7 | 285 | cmd_ld = $(LD) $(ld_flags) $(real-prereqs) -o $@ |
1da177e4 | 286 | |
898f5a00 MY |
287 | # Archive |
288 | # --------------------------------------------------------------------------- | |
289 | ||
290 | quiet_cmd_ar = AR $@ | |
13dc8c02 | 291 | cmd_ar = rm -f $@; $(AR) cDPrsT $@ $(real-prereqs) |
898f5a00 | 292 | |
1da177e4 LT |
293 | # Objcopy |
294 | # --------------------------------------------------------------------------- | |
295 | ||
296 | quiet_cmd_objcopy = OBJCOPY $@ | |
297 | cmd_objcopy = $(OBJCOPY) $(OBJCOPYFLAGS) $(OBJCOPYFLAGS_$(@F)) $< $@ | |
298 | ||
299 | # Gzip | |
300 | # --------------------------------------------------------------------------- | |
301 | ||
302 | quiet_cmd_gzip = GZIP $@ | |
e4a42c82 | 303 | cmd_gzip = cat $(real-prereqs) | $(KGZIP) -n -f -9 > $@ |
1da177e4 | 304 | |
aab94339 DB |
305 | # DTC |
306 | # --------------------------------------------------------------------------- | |
6b22b3d1 | 307 | DTC ?= $(objtree)/scripts/dtc/dtc |
3eb619b2 | 308 | DTC_FLAGS += -Wno-interrupt_provider |
aab94339 | 309 | |
bc553986 | 310 | # Disable noisy checks by default |
e27128db | 311 | ifeq ($(findstring 1,$(KBUILD_EXTRA_WARN)),) |
8654cb8d | 312 | DTC_FLAGS += -Wno-unit_address_vs_reg \ |
8654cb8d | 313 | -Wno-unit_address_format \ |
4fd98e37 RH |
314 | -Wno-avoid_unnecessary_addr_size \ |
315 | -Wno-alias_paths \ | |
74656b68 | 316 | -Wno-graph_child_address \ |
70523a3c | 317 | -Wno-simple_bus_reg \ |
1ee7943c | 318 | -Wno-unique_unit_address |
bc553986 RH |
319 | endif |
320 | ||
e27128db | 321 | ifneq ($(findstring 2,$(KBUILD_EXTRA_WARN)),) |
8654cb8d | 322 | DTC_FLAGS += -Wnode_name_chars_strict \ |
3eb619b2 RH |
323 | -Wproperty_name_chars_strict \ |
324 | -Winterrupt_provider | |
bc553986 RH |
325 | endif |
326 | ||
331f7416 FR |
327 | DTC_FLAGS += $(DTC_FLAGS_$(basetarget)) |
328 | ||
bcf0c664 MY |
329 | # Set -@ if the target is a base DTB that overlay is applied onto |
330 | DTC_FLAGS += $(if $(filter $(patsubst $(obj)/%,%,$@), $(base-dtb-y)), -@) | |
331 | ||
aab94339 | 332 | # Generate an assembly file to wrap the output of the device tree compiler |
1c00a47e | 333 | quiet_cmd_dt_S_dtb= DTB $@ |
aab94339 | 334 | cmd_dt_S_dtb= \ |
b79c6aa6 | 335 | { \ |
aab94339 DB |
336 | echo '\#include <asm-generic/vmlinux.lds.h>'; \ |
337 | echo '.section .dtb.init.rodata,"a"'; \ | |
338 | echo '.balign STRUCT_ALIGNMENT'; \ | |
55fe6da9 JH |
339 | echo '.global __dtb_$(subst -,_,$(*F))_begin'; \ |
340 | echo '__dtb_$(subst -,_,$(*F))_begin:'; \ | |
aab94339 | 341 | echo '.incbin "$<" '; \ |
55fe6da9 JH |
342 | echo '__dtb_$(subst -,_,$(*F))_end:'; \ |
343 | echo '.global __dtb_$(subst -,_,$(*F))_end'; \ | |
aab94339 | 344 | echo '.balign STRUCT_ALIGNMENT'; \ |
b79c6aa6 | 345 | } > $@ |
aab94339 | 346 | |
a7f92419 MY |
347 | $(obj)/%.dtb.S: $(obj)/%.dtb FORCE |
348 | $(call if_changed,dt_S_dtb) | |
aab94339 DB |
349 | |
350 | quiet_cmd_dtc = DTC $@ | |
dd7699e3 | 351 | cmd_dtc = $(HOSTCC) -E $(dtc_cpp_flags) -x assembler-with-cpp -o $(dtc-tmp) $< ; \ |
64bfc994 | 352 | $(DTC) -o $@ -b 0 \ |
50f9ddaf | 353 | $(addprefix -i,$(dir $<) $(DTC_INCLUDE)) $(DTC_FLAGS) \ |
b0a4d8b3 IC |
354 | -d $(depfile).dtc.tmp $(dtc-tmp) ; \ |
355 | cat $(depfile).pre.tmp $(depfile).dtc.tmp > $(depfile) | |
1da177e4 | 356 | |
b8fc5b21 | 357 | $(obj)/%.dtb: $(src)/%.dts $(DTC) FORCE |
78046fab | 358 | $(call if_changed_dep,dtc) |
4f0e3a57 | 359 | |
ce88c9c7 VK |
360 | $(obj)/%.dtbo: $(src)/%.dts $(DTC) FORCE |
361 | $(call if_changed_dep,dtc) | |
362 | ||
15d16d6d RH |
363 | quiet_cmd_fdtoverlay = DTOVL $@ |
364 | cmd_fdtoverlay = $(objtree)/scripts/dtc/fdtoverlay -o $@ -i $(real-prereqs) | |
365 | ||
bcf0c664 | 366 | $(multi-dtb-y): FORCE |
15d16d6d | 367 | $(call if_changed,fdtoverlay) |
bcf0c664 | 368 | $(call multi_depend, $(multi-dtb-y), .dtb, -dtbs) |
15d16d6d | 369 | |
4f0e3a57 | 370 | DT_CHECKER ?= dt-validate |
c59773d2 | 371 | DT_CHECKER_FLAGS ?= $(if $(DT_SCHEMA_FILES),,-m) |
4f0e3a57 | 372 | DT_BINDING_DIR := Documentation/devicetree/bindings |
2ba06cd8 | 373 | # DT_TMP_SCHEMA may be overridden from Documentation/devicetree/bindings/Makefile |
b8a49399 | 374 | DT_TMP_SCHEMA ?= $(objtree)/$(DT_BINDING_DIR)/processed-schema.json |
4f0e3a57 RH |
375 | |
376 | quiet_cmd_dtb_check = CHECK $@ | |
c59773d2 | 377 | cmd_dtb_check = $(DT_CHECKER) $(DT_CHECKER_FLAGS) -u $(srctree)/$(DT_BINDING_DIR) -p $(DT_TMP_SCHEMA) $@ |
4f0e3a57 | 378 | |
7a049605 | 379 | define rule_dtc |
78046fab | 380 | $(call cmd_and_fixdep,dtc) |
f5688663 | 381 | $(call cmd,dtb_check) |
4f0e3a57 RH |
382 | endef |
383 | ||
384 | $(obj)/%.dt.yaml: $(src)/%.dts $(DTC) $(DT_TMP_SCHEMA) FORCE | |
285a65f1 | 385 | $(call if_changed_rule,dtc) |
90b335fb | 386 | |
b0a4d8b3 | 387 | dtc-tmp = $(subst $(comma),_,$(dot-target).dts.tmp) |
22435f38 | 388 | |
bc22c17e AK |
389 | # Bzip2 |
390 | # --------------------------------------------------------------------------- | |
391 | ||
d3dd3b5a PA |
392 | # Bzip2 and LZMA do not include size in file... so we have to fake that; |
393 | # append the size as a 32-bit littleendian number as gzip does. | |
4a2ff67c | 394 | size_append = printf $(shell \ |
d3dd3b5a | 395 | dec_size=0; \ |
afa974b7 | 396 | for F in $(real-prereqs); do \ |
a670b0b4 | 397 | fsize=$$($(CONFIG_SHELL) $(srctree)/scripts/file-size.sh $$F); \ |
d3dd3b5a PA |
398 | dec_size=$$(expr $$dec_size + $$fsize); \ |
399 | done; \ | |
1373411a JN |
400 | printf "%08x\n" $$dec_size | \ |
401 | sed 's/\(..\)/\1 /g' | { \ | |
402 | read ch0 ch1 ch2 ch3; \ | |
403 | for ch in $$ch3 $$ch2 $$ch1 $$ch0; do \ | |
404 | printf '%s%03o' '\\' $$((0x$$ch)); \ | |
405 | done; \ | |
406 | } \ | |
d3dd3b5a PA |
407 | ) |
408 | ||
409 | quiet_cmd_bzip2 = BZIP2 $@ | |
e4a42c82 | 410 | cmd_bzip2 = { cat $(real-prereqs) | $(KBZIP2) -9; $(size_append); } > $@ |
bc22c17e AK |
411 | |
412 | # Lzma | |
413 | # --------------------------------------------------------------------------- | |
414 | ||
415 | quiet_cmd_lzma = LZMA $@ | |
8dfb61dc | 416 | cmd_lzma = { cat $(real-prereqs) | $(LZMA) -9; $(size_append); } > $@ |
7dd65feb | 417 | |
2d74b2c6 | 418 | quiet_cmd_lzo = LZO $@ |
e4a42c82 | 419 | cmd_lzo = { cat $(real-prereqs) | $(KLZOP) -9; $(size_append); } > $@ |
d61931d8 | 420 | |
e76e1fdf | 421 | quiet_cmd_lz4 = LZ4 $@ |
8dfb61dc | 422 | cmd_lz4 = { cat $(real-prereqs) | $(LZ4) -l -c1 stdin stdout; \ |
b79c6aa6 | 423 | $(size_append); } > $@ |
e76e1fdf | 424 | |
e3393645 SW |
425 | # U-Boot mkimage |
426 | # --------------------------------------------------------------------------- | |
427 | ||
428 | MKIMAGE := $(srctree)/scripts/mkuboot.sh | |
429 | ||
430 | # SRCARCH just happens to match slightly more than ARCH (on sparc), so reduces | |
431 | # the number of overrides in arch makefiles | |
432 | UIMAGE_ARCH ?= $(SRCARCH) | |
433 | UIMAGE_COMPRESSION ?= $(if $(2),$(2),none) | |
434 | UIMAGE_OPTS-y ?= | |
435 | UIMAGE_TYPE ?= kernel | |
436 | UIMAGE_LOADADDR ?= arch_must_set_this | |
437 | UIMAGE_ENTRYADDR ?= $(UIMAGE_LOADADDR) | |
438 | UIMAGE_NAME ?= 'Linux-$(KERNELRELEASE)' | |
e3393645 | 439 | |
786ac51a | 440 | quiet_cmd_uimage = UIMAGE $@ |
858805b3 | 441 | cmd_uimage = $(BASH) $(MKIMAGE) -A $(UIMAGE_ARCH) -O linux \ |
e3393645 SW |
442 | -C $(UIMAGE_COMPRESSION) $(UIMAGE_OPTS-y) \ |
443 | -T $(UIMAGE_TYPE) \ | |
444 | -a $(UIMAGE_LOADADDR) -e $(UIMAGE_ENTRYADDR) \ | |
786ac51a | 445 | -n $(UIMAGE_NAME) -d $< $@ |
e3393645 | 446 | |
24fa0402 LC |
447 | # XZ |
448 | # --------------------------------------------------------------------------- | |
449 | # Use xzkern to compress the kernel image and xzmisc to compress other things. | |
450 | # | |
451 | # xzkern uses a big LZMA2 dictionary since it doesn't increase memory usage | |
452 | # of the kernel decompressor. A BCJ filter is used if it is available for | |
453 | # the target architecture. xzkern also appends uncompressed size of the data | |
454 | # using size_append. The .xz format has the size information available at | |
455 | # the end of the file too, but it's in more complex format and it's good to | |
456 | # avoid changing the part of the boot code that reads the uncompressed size. | |
457 | # Note that the bytes added by size_append will make the xz tool think that | |
458 | # the file is corrupt. This is expected. | |
459 | # | |
460 | # xzmisc doesn't use size_append, so it can be used to create normal .xz | |
461 | # files. xzmisc uses smaller LZMA2 dictionary than xzkern, because a very | |
462 | # big dictionary would increase the memory usage too much in the multi-call | |
463 | # decompression mode. A BCJ filter isn't used either. | |
464 | quiet_cmd_xzkern = XZKERN $@ | |
b956c7a6 | 465 | cmd_xzkern = { cat $(real-prereqs) | sh $(srctree)/scripts/xz_wrap.sh; \ |
b79c6aa6 | 466 | $(size_append); } > $@ |
24fa0402 LC |
467 | |
468 | quiet_cmd_xzmisc = XZMISC $@ | |
8dfb61dc | 469 | cmd_xzmisc = cat $(real-prereqs) | $(XZ) --check=crc32 --lzma2=dict=1MiB > $@ |
ebf003f0 | 470 | |
48f7ddf7 NT |
471 | # ZSTD |
472 | # --------------------------------------------------------------------------- | |
473 | # Appends the uncompressed size of the data using size_append. The .zst | |
474 | # format has the size information available at the beginning of the file too, | |
475 | # but it's in a more complex format and it's good to avoid changing the part | |
476 | # of the boot code that reads the uncompressed size. | |
477 | # | |
478 | # Note that the bytes added by size_append will make the zstd tool think that | |
479 | # the file is corrupt. This is expected. | |
480 | # | |
481 | # zstd uses a maximum window size of 8 MB. zstd22 uses a maximum window size of | |
482 | # 128 MB. zstd22 is used for kernel compression because it is decompressed in a | |
483 | # single pass, so zstd doesn't need to allocate a window buffer. When streaming | |
484 | # decompression is used, like initramfs decompression, zstd22 should likely not | |
485 | # be used because it would require zstd to allocate a 128 MB buffer. | |
486 | ||
487 | quiet_cmd_zstd = ZSTD $@ | |
488 | cmd_zstd = { cat $(real-prereqs) | $(ZSTD) -19; $(size_append); } > $@ | |
489 | ||
490 | quiet_cmd_zstd22 = ZSTD22 $@ | |
491 | cmd_zstd22 = { cat $(real-prereqs) | $(ZSTD) -22 --ultra; $(size_append); } > $@ | |
492 | ||
ebf003f0 MK |
493 | # ASM offsets |
494 | # --------------------------------------------------------------------------- | |
495 | ||
496 | # Default sed regexp - multiline due to syntax constraints | |
cf0c3e68 JH |
497 | # |
498 | # Use [:space:] because LLVM's integrated assembler inserts <tab> around | |
499 | # the .ascii directive whereas GCC keeps the <space> as-is. | |
ebf003f0 | 500 | define sed-offsets |
cf0c3e68 JH |
501 | 's:^[[:space:]]*\.ascii[[:space:]]*"\(.*\)".*:\1:; \ |
502 | /^->/{s:->#\(.*\):/* \1 */:; \ | |
ebf003f0 | 503 | s:^->\([^ ]*\) [\$$#]*\([^ ]*\) \(.*\):#define \1 \2 /* \3 */:; \ |
cf0c3e68 | 504 | s:->::; p;}' |
ebf003f0 MK |
505 | endef |
506 | ||
507 | # Use filechk to avoid rebuilds when a header changes, but the resulting file | |
508 | # does not | |
509 | define filechk_offsets | |
ebf003f0 MK |
510 | echo "#ifndef $2"; \ |
511 | echo "#define $2"; \ | |
512 | echo "/*"; \ | |
513 | echo " * DO NOT MODIFY."; \ | |
514 | echo " *"; \ | |
515 | echo " * This file was generated by Kbuild"; \ | |
516 | echo " */"; \ | |
517 | echo ""; \ | |
43fee2b2 | 518 | sed -ne $(sed-offsets) < $<; \ |
ebf003f0 | 519 | echo ""; \ |
ad774086 | 520 | echo "#endif" |
ebf003f0 | 521 | endef |