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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 | ||
8fdc3fbb C |
23 | # Determine modorder. |
24 | # Unfortunately, we don't have information about ordering between -y | |
25 | # and -m subdirs. Just put -y's first. | |
26 | modorder := $(patsubst %/,%/modules.order, $(filter %/, $(obj-y)) $(obj-m:.o=.ko)) | |
1da177e4 LT |
27 | |
28 | # Handle objects in subdirs | |
29 | # --------------------------------------------------------------------------- | |
f49821ee | 30 | # o if we encounter foo/ in $(obj-y), replace it by foo/built-in.a |
1da177e4 | 31 | # and add the directory to the list of dirs to descend into: $(subdir-y) |
38385f8f | 32 | # o if we encounter foo/ in $(obj-m), remove it from $(obj-m) |
1da177e4 | 33 | # and add the directory to the list of dirs to descend into: $(subdir-m) |
1da177e4 LT |
34 | __subdir-y := $(patsubst %/,%,$(filter %/, $(obj-y))) |
35 | subdir-y += $(__subdir-y) | |
36 | __subdir-m := $(patsubst %/,%,$(filter %/, $(obj-m))) | |
37 | subdir-m += $(__subdir-m) | |
f49821ee | 38 | obj-y := $(patsubst %/, %/built-in.a, $(obj-y)) |
1da177e4 LT |
39 | obj-m := $(filter-out %/, $(obj-m)) |
40 | ||
41 | # Subdirectories we need to descend into | |
1da177e4 LT |
42 | subdir-ym := $(sort $(subdir-y) $(subdir-m)) |
43 | ||
8fdc3fbb | 44 | # if $(foo-objs), $(foo-y), or $(foo-m) exists, foo.o is a composite object |
1da177e4 | 45 | multi-used-y := $(sort $(foreach m,$(obj-y), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y))), $(m)))) |
cf4f2193 | 46 | multi-used-m := $(sort $(foreach m,$(obj-m), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y)) $($(m:.o=-m))), $(m)))) |
1da177e4 LT |
47 | multi-used := $(multi-used-y) $(multi-used-m) |
48 | single-used-m := $(sort $(filter-out $(multi-used-m),$(obj-m))) | |
49 | ||
f5fb9765 SR |
50 | # $(subdir-obj-y) is the list of objects in $(obj-y) which uses dir/ to |
51 | # tell kbuild to descend | |
f49821ee | 52 | subdir-obj-y := $(filter %/built-in.a, $(obj-y)) |
1da177e4 | 53 | |
1da177e4 | 54 | # Replace multi-part objects by their individual parts, look at local dir only |
10aaa3b7 | 55 | real-objs-y := $(foreach m, $(filter-out $(subdir-obj-y), $(obj-y)), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y))),$($(m:.o=-objs)) $($(m:.o=-y)),$(m))) |
cf4f2193 | 56 | real-objs-m := $(foreach m, $(obj-m), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y)) $($(m:.o=-m))),$($(m:.o=-objs)) $($(m:.o=-y)) $($(m:.o=-m)),$(m))) |
1da177e4 | 57 | |
7e7962dd MY |
58 | # DTB |
59 | # If CONFIG_OF_ALL_DTBS is enabled, all DT blobs are built | |
60 | extra-y += $(dtb-y) | |
61 | extra-$(CONFIG_OF_ALL_DTBS) += $(dtb-) | |
62 | ||
1da177e4 LT |
63 | # Add subdir path |
64 | ||
65 | extra-y := $(addprefix $(obj)/,$(extra-y)) | |
66 | always := $(addprefix $(obj)/,$(always)) | |
67 | targets := $(addprefix $(obj)/,$(targets)) | |
551559e1 | 68 | modorder := $(addprefix $(obj)/,$(modorder)) |
1da177e4 LT |
69 | obj-y := $(addprefix $(obj)/,$(obj-y)) |
70 | obj-m := $(addprefix $(obj)/,$(obj-m)) | |
71 | lib-y := $(addprefix $(obj)/,$(lib-y)) | |
72 | subdir-obj-y := $(addprefix $(obj)/,$(subdir-obj-y)) | |
73 | real-objs-y := $(addprefix $(obj)/,$(real-objs-y)) | |
74 | real-objs-m := $(addprefix $(obj)/,$(real-objs-m)) | |
75 | single-used-m := $(addprefix $(obj)/,$(single-used-m)) | |
76 | multi-used-y := $(addprefix $(obj)/,$(multi-used-y)) | |
77 | multi-used-m := $(addprefix $(obj)/,$(multi-used-m)) | |
1da177e4 | 78 | subdir-ym := $(addprefix $(obj)/,$(subdir-ym)) |
1da177e4 | 79 | |
1da177e4 | 80 | # These flags are needed for modversions and compiling, so we define them here |
8fdc3fbb | 81 | # $(modname_flags) defines KBUILD_MODNAME as the name of the module it will |
1da177e4 | 82 | # end up in (or would, if it gets compiled in) |
b42841b7 MM |
83 | name-fix = $(squote)$(quote)$(subst $(comma),_,$(subst -,_,$1))$(quote)$(squote) |
84 | basename_flags = -DKBUILD_BASENAME=$(call name-fix,$(basetarget)) | |
aeacb019 | 85 | modname_flags = -DKBUILD_MODNAME=$(call name-fix,$(modname)) |
1da177e4 | 86 | |
4e13d47c | 87 | orig_c_flags = $(KBUILD_CPPFLAGS) $(KBUILD_CFLAGS) \ |
d8672b40 | 88 | $(ccflags-y) $(CFLAGS_$(basetarget).o) |
656ee82c | 89 | _c_flags = $(filter-out $(CFLAGS_REMOVE_$(basetarget).o), $(orig_c_flags)) |
4e13d47c | 90 | orig_a_flags = $(KBUILD_CPPFLAGS) $(KBUILD_AFLAGS) \ |
d8672b40 | 91 | $(asflags-y) $(AFLAGS_$(basetarget).o) |
a7e137eb | 92 | _a_flags = $(filter-out $(AFLAGS_REMOVE_$(basetarget).o), $(orig_a_flags)) |
f77bf014 | 93 | _cpp_flags = $(KBUILD_CPPFLAGS) $(cppflags-y) $(CPPFLAGS_$(@F)) |
1da177e4 | 94 | |
2521f2c2 PO |
95 | # |
96 | # Enable gcov profiling flags for a file, directory or for all files depending | |
97 | # on variables GCOV_PROFILE_obj.o, GCOV_PROFILE and CONFIG_GCOV_PROFILE_ALL | |
98 | # (in this order) | |
99 | # | |
100 | ifeq ($(CONFIG_GCOV_KERNEL),y) | |
101 | _c_flags += $(if $(patsubst n%,, \ | |
102 | $(GCOV_PROFILE_$(basetarget).o)$(GCOV_PROFILE)$(CONFIG_GCOV_PROFILE_ALL)), \ | |
103 | $(CFLAGS_GCOV)) | |
104 | endif | |
105 | ||
0b24becc AR |
106 | # |
107 | # Enable address sanitizer flags for kernel except some files or directories | |
108 | # we don't want to check (depends on variables KASAN_SANITIZE_obj.o, KASAN_SANITIZE) | |
109 | # | |
110 | ifeq ($(CONFIG_KASAN),y) | |
111 | _c_flags += $(if $(patsubst n%,, \ | |
112 | $(KASAN_SANITIZE_$(basetarget).o)$(KASAN_SANITIZE)y), \ | |
0e410e15 | 113 | $(CFLAGS_KASAN), $(CFLAGS_KASAN_NOSANITIZE)) |
0b24becc AR |
114 | endif |
115 | ||
c6d30853 AR |
116 | ifeq ($(CONFIG_UBSAN),y) |
117 | _c_flags += $(if $(patsubst n%,, \ | |
118 | $(UBSAN_SANITIZE_$(basetarget).o)$(UBSAN_SANITIZE)$(CONFIG_UBSAN_SANITIZE_ALL)), \ | |
119 | $(CFLAGS_UBSAN)) | |
120 | endif | |
121 | ||
5c9a8750 DV |
122 | ifeq ($(CONFIG_KCOV),y) |
123 | _c_flags += $(if $(patsubst n%,, \ | |
a4691dea | 124 | $(KCOV_INSTRUMENT_$(basetarget).o)$(KCOV_INSTRUMENT)$(CONFIG_KCOV_INSTRUMENT_ALL)), \ |
5c9a8750 DV |
125 | $(CFLAGS_KCOV)) |
126 | endif | |
127 | ||
1da177e4 LT |
128 | # If building the kernel in a separate objtree expand all occurrences |
129 | # of -Idir to -I$(srctree)/dir except for absolute paths (starting with '/'). | |
130 | ||
131 | ifeq ($(KBUILD_SRC),) | |
132 | __c_flags = $(_c_flags) | |
133 | __a_flags = $(_a_flags) | |
134 | __cpp_flags = $(_cpp_flags) | |
135 | else | |
136 | ||
1da177e4 LT |
137 | # -I$(obj) locates generated .h files |
138 | # $(call addtree,-I$(obj)) locates .h files in srctree, from generated .c files | |
139 | # and locates generated .h files | |
140 | # FIXME: Replace both with specific CFLAGS* statements in the makefiles | |
4607ebf0 | 141 | __c_flags = $(if $(obj),$(call addtree,-I$(src)) -I$(obj)) \ |
db547ef1 AB |
142 | $(call flags,_c_flags) |
143 | __a_flags = $(call flags,_a_flags) | |
144 | __cpp_flags = $(call flags,_cpp_flags) | |
1da177e4 LT |
145 | endif |
146 | ||
d8672b40 SR |
147 | c_flags = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(LINUXINCLUDE) \ |
148 | $(__c_flags) $(modkern_cflags) \ | |
b42841b7 | 149 | $(basename_flags) $(modname_flags) |
1da177e4 | 150 | |
d8672b40 | 151 | a_flags = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(LINUXINCLUDE) \ |
1da177e4 LT |
152 | $(__a_flags) $(modkern_aflags) |
153 | ||
d8672b40 SR |
154 | cpp_flags = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(LINUXINCLUDE) \ |
155 | $(__cpp_flags) | |
1da177e4 | 156 | |
f77bf014 | 157 | ld_flags = $(LDFLAGS) $(ldflags-y) |
1da177e4 | 158 | |
50f9ddaf MY |
159 | DTC_INCLUDE := $(srctree)/scripts/dtc/include-prefixes |
160 | ||
b0a4d8b3 | 161 | dtc_cpp_flags = -Wp,-MD,$(depfile).pre.tmp -nostdinc \ |
50f9ddaf | 162 | $(addprefix -I,$(DTC_INCLUDE)) \ |
e570d7c1 SW |
163 | -undef -D__DTS__ |
164 | ||
1da177e4 | 165 | # Finds the multi-part object the current object will be linked into |
aeacb019 MY |
166 | # If the object belongs to two or more multi-part objects, all of them are |
167 | # concatenated with a colon separator. | |
168 | modname-multi = $(subst $(space),:,$(sort $(foreach m,$(multi-used),\ | |
c96a294e | 169 | $(if $(filter $*.o, $($(m:.o=-objs)) $($(m:.o=-y)) $($(m:.o=-m))),$(m:.o=))))) |
1da177e4 | 170 | |
c8589d1e MY |
171 | # Useful for describing the dependency of composite objects |
172 | # Usage: | |
173 | # $(call multi_depend, multi_used_targets, suffix_to_remove, suffix_to_add) | |
174 | define multi_depend | |
175 | $(foreach m, $(notdir $1), \ | |
176 | $(eval $(obj)/$m: \ | |
177 | $(addprefix $(obj)/, $(foreach s, $3, $($(m:%$(strip $2)=%$(s))))))) | |
178 | endef | |
179 | ||
7373f4f8 AL |
180 | # LEX |
181 | # --------------------------------------------------------------------------- | |
7373f4f8 | 182 | quiet_cmd_flex = LEX $@ |
eea199b4 | 183 | cmd_flex = $(LEX) -o$@ -L $< |
7373f4f8 | 184 | |
033dba2e | 185 | ifdef REGENERATE_PARSERS |
58238c81 | 186 | .PRECIOUS: $(src)/%.lex.c_shipped |
7373f4f8 AL |
187 | $(src)/%.lex.c_shipped: $(src)/%.l |
188 | $(call cmd,flex) | |
033dba2e MY |
189 | endif |
190 | ||
191 | .PRECIOUS: $(obj)/%.lex.c | |
192 | $(filter %.lex.c,$(targets)): $(obj)/%.lex.c: $(src)/%.l FORCE | |
193 | $(call if_changed,flex) | |
7373f4f8 AL |
194 | |
195 | # YACC | |
196 | # --------------------------------------------------------------------------- | |
7373f4f8 | 197 | quiet_cmd_bison = YACC $@ |
eea199b4 | 198 | cmd_bison = $(YACC) -o$@ -t -l $< |
7373f4f8 | 199 | |
033dba2e | 200 | ifdef REGENERATE_PARSERS |
58238c81 | 201 | .PRECIOUS: $(src)/%.tab.c_shipped |
7373f4f8 AL |
202 | $(src)/%.tab.c_shipped: $(src)/%.y |
203 | $(call cmd,bison) | |
033dba2e MY |
204 | endif |
205 | ||
206 | .PRECIOUS: $(obj)/%.tab.c | |
207 | $(filter %.tab.c,$(targets)): $(obj)/%.tab.c: $(src)/%.y FORCE | |
208 | $(call if_changed,bison) | |
7373f4f8 AL |
209 | |
210 | quiet_cmd_bison_h = YACC $@ | |
211 | cmd_bison_h = bison -o/dev/null --defines=$@ -t -l -p $(YACC_PREFIX) $< | |
212 | ||
033dba2e | 213 | ifdef REGENERATE_PARSERS |
58238c81 | 214 | .PRECIOUS: $(src)/%.tab.h_shipped |
7373f4f8 AL |
215 | $(src)/%.tab.h_shipped: $(src)/%.y |
216 | $(call cmd,bison_h) | |
7373f4f8 AL |
217 | endif |
218 | ||
033dba2e MY |
219 | .PRECIOUS: $(obj)/%.tab.h |
220 | $(filter %.tab.h,$(targets)): $(obj)/%.tab.h: $(src)/%.y FORCE | |
221 | $(call if_changed,bison_h) | |
222 | ||
1da177e4 LT |
223 | # Shipped files |
224 | # =========================================================================== | |
225 | ||
226 | quiet_cmd_shipped = SHIPPED $@ | |
227 | cmd_shipped = cat $< > $@ | |
228 | ||
991d76c9 | 229 | $(obj)/%: $(src)/%_shipped |
1da177e4 LT |
230 | $(call cmd,shipped) |
231 | ||
232 | # Commands useful for building a boot image | |
233 | # =========================================================================== | |
38385f8f | 234 | # |
1da177e4 LT |
235 | # Use as following: |
236 | # | |
237 | # target: source(s) FORCE | |
238 | # $(if_changed,ld/objcopy/gzip) | |
239 | # | |
836caba7 | 240 | # and add target to extra-y so that we know we have to |
1da177e4 LT |
241 | # read in the saved command line |
242 | ||
243 | # Linking | |
244 | # --------------------------------------------------------------------------- | |
245 | ||
246 | quiet_cmd_ld = LD $@ | |
f77bf014 | 247 | cmd_ld = $(LD) $(LDFLAGS) $(ldflags-y) $(LDFLAGS_$(@F)) \ |
38385f8f | 248 | $(filter-out FORCE,$^) -o $@ |
1da177e4 LT |
249 | |
250 | # Objcopy | |
251 | # --------------------------------------------------------------------------- | |
252 | ||
253 | quiet_cmd_objcopy = OBJCOPY $@ | |
254 | cmd_objcopy = $(OBJCOPY) $(OBJCOPYFLAGS) $(OBJCOPYFLAGS_$(@F)) $< $@ | |
255 | ||
256 | # Gzip | |
257 | # --------------------------------------------------------------------------- | |
258 | ||
259 | quiet_cmd_gzip = GZIP $@ | |
6ae9ecb8 | 260 | cmd_gzip = (cat $(filter-out FORCE,$^) | gzip -n -f -9 > $@) || \ |
d3dd3b5a | 261 | (rm -f $@ ; false) |
1da177e4 | 262 | |
aab94339 DB |
263 | # DTC |
264 | # --------------------------------------------------------------------------- | |
6b22b3d1 | 265 | DTC ?= $(objtree)/scripts/dtc/dtc |
aab94339 | 266 | |
bc553986 | 267 | # Disable noisy checks by default |
f759625a | 268 | ifeq ($(findstring 1,$(KBUILD_ENABLE_EXTRA_GCC_CHECKS)),) |
8654cb8d RH |
269 | DTC_FLAGS += -Wno-unit_address_vs_reg \ |
270 | -Wno-simple_bus_reg \ | |
271 | -Wno-unit_address_format \ | |
272 | -Wno-pci_bridge \ | |
273 | -Wno-pci_device_bus_num \ | |
274 | -Wno-pci_device_reg | |
bc553986 RH |
275 | endif |
276 | ||
f759625a | 277 | ifneq ($(findstring 2,$(KBUILD_ENABLE_EXTRA_GCC_CHECKS)),) |
8654cb8d RH |
278 | DTC_FLAGS += -Wnode_name_chars_strict \ |
279 | -Wproperty_name_chars_strict | |
bc553986 RH |
280 | endif |
281 | ||
331f7416 FR |
282 | DTC_FLAGS += $(DTC_FLAGS_$(basetarget)) |
283 | ||
aab94339 | 284 | # Generate an assembly file to wrap the output of the device tree compiler |
1c00a47e | 285 | quiet_cmd_dt_S_dtb= DTB $@ |
aab94339 DB |
286 | cmd_dt_S_dtb= \ |
287 | ( \ | |
288 | echo '\#include <asm-generic/vmlinux.lds.h>'; \ | |
289 | echo '.section .dtb.init.rodata,"a"'; \ | |
290 | echo '.balign STRUCT_ALIGNMENT'; \ | |
55fe6da9 JH |
291 | echo '.global __dtb_$(subst -,_,$(*F))_begin'; \ |
292 | echo '__dtb_$(subst -,_,$(*F))_begin:'; \ | |
aab94339 | 293 | echo '.incbin "$<" '; \ |
55fe6da9 JH |
294 | echo '__dtb_$(subst -,_,$(*F))_end:'; \ |
295 | echo '.global __dtb_$(subst -,_,$(*F))_end'; \ | |
aab94339 DB |
296 | echo '.balign STRUCT_ALIGNMENT'; \ |
297 | ) > $@ | |
298 | ||
299 | $(obj)/%.dtb.S: $(obj)/%.dtb | |
300 | $(call cmd,dt_S_dtb) | |
301 | ||
302 | quiet_cmd_dtc = DTC $@ | |
77479b38 NR |
303 | cmd_dtc = mkdir -p $(dir ${dtc-tmp}) ; \ |
304 | $(CPP) $(dtc_cpp_flags) -x assembler-with-cpp -o $(dtc-tmp) $< ; \ | |
6b22b3d1 | 305 | $(DTC) -O dtb -o $@ -b 0 \ |
50f9ddaf | 306 | $(addprefix -i,$(dir $<) $(DTC_INCLUDE)) $(DTC_FLAGS) \ |
b0a4d8b3 IC |
307 | -d $(depfile).dtc.tmp $(dtc-tmp) ; \ |
308 | cat $(depfile).pre.tmp $(depfile).dtc.tmp > $(depfile) | |
1da177e4 | 309 | |
90b335fb SW |
310 | $(obj)/%.dtb: $(src)/%.dts FORCE |
311 | $(call if_changed_dep,dtc) | |
312 | ||
b0a4d8b3 | 313 | dtc-tmp = $(subst $(comma),_,$(dot-target).dts.tmp) |
22435f38 | 314 | |
bc22c17e AK |
315 | # Bzip2 |
316 | # --------------------------------------------------------------------------- | |
317 | ||
d3dd3b5a PA |
318 | # Bzip2 and LZMA do not include size in file... so we have to fake that; |
319 | # append the size as a 32-bit littleendian number as gzip does. | |
4a2ff67c | 320 | size_append = printf $(shell \ |
d3dd3b5a PA |
321 | dec_size=0; \ |
322 | for F in $1; do \ | |
a670b0b4 | 323 | fsize=$$($(CONFIG_SHELL) $(srctree)/scripts/file-size.sh $$F); \ |
d3dd3b5a PA |
324 | dec_size=$$(expr $$dec_size + $$fsize); \ |
325 | done; \ | |
1373411a JN |
326 | printf "%08x\n" $$dec_size | \ |
327 | sed 's/\(..\)/\1 /g' | { \ | |
328 | read ch0 ch1 ch2 ch3; \ | |
329 | for ch in $$ch3 $$ch2 $$ch1 $$ch0; do \ | |
330 | printf '%s%03o' '\\' $$((0x$$ch)); \ | |
331 | done; \ | |
332 | } \ | |
d3dd3b5a PA |
333 | ) |
334 | ||
335 | quiet_cmd_bzip2 = BZIP2 $@ | |
336 | cmd_bzip2 = (cat $(filter-out FORCE,$^) | \ | |
337 | bzip2 -9 && $(call size_append, $(filter-out FORCE,$^))) > $@ || \ | |
338 | (rm -f $@ ; false) | |
bc22c17e AK |
339 | |
340 | # Lzma | |
341 | # --------------------------------------------------------------------------- | |
342 | ||
343 | quiet_cmd_lzma = LZMA $@ | |
d3dd3b5a PA |
344 | cmd_lzma = (cat $(filter-out FORCE,$^) | \ |
345 | lzma -9 && $(call size_append, $(filter-out FORCE,$^))) > $@ || \ | |
346 | (rm -f $@ ; false) | |
7dd65feb | 347 | |
2d74b2c6 | 348 | quiet_cmd_lzo = LZO $@ |
7dd65feb AT |
349 | cmd_lzo = (cat $(filter-out FORCE,$^) | \ |
350 | lzop -9 && $(call size_append, $(filter-out FORCE,$^))) > $@ || \ | |
351 | (rm -f $@ ; false) | |
d61931d8 | 352 | |
e76e1fdf KL |
353 | quiet_cmd_lz4 = LZ4 $@ |
354 | cmd_lz4 = (cat $(filter-out FORCE,$^) | \ | |
355 | lz4c -l -c1 stdin stdout && $(call size_append, $(filter-out FORCE,$^))) > $@ || \ | |
356 | (rm -f $@ ; false) | |
357 | ||
e3393645 SW |
358 | # U-Boot mkimage |
359 | # --------------------------------------------------------------------------- | |
360 | ||
361 | MKIMAGE := $(srctree)/scripts/mkuboot.sh | |
362 | ||
363 | # SRCARCH just happens to match slightly more than ARCH (on sparc), so reduces | |
364 | # the number of overrides in arch makefiles | |
365 | UIMAGE_ARCH ?= $(SRCARCH) | |
366 | UIMAGE_COMPRESSION ?= $(if $(2),$(2),none) | |
367 | UIMAGE_OPTS-y ?= | |
368 | UIMAGE_TYPE ?= kernel | |
369 | UIMAGE_LOADADDR ?= arch_must_set_this | |
370 | UIMAGE_ENTRYADDR ?= $(UIMAGE_LOADADDR) | |
371 | UIMAGE_NAME ?= 'Linux-$(KERNELRELEASE)' | |
372 | UIMAGE_IN ?= $< | |
373 | UIMAGE_OUT ?= $@ | |
374 | ||
375 | quiet_cmd_uimage = UIMAGE $(UIMAGE_OUT) | |
376 | cmd_uimage = $(CONFIG_SHELL) $(MKIMAGE) -A $(UIMAGE_ARCH) -O linux \ | |
377 | -C $(UIMAGE_COMPRESSION) $(UIMAGE_OPTS-y) \ | |
378 | -T $(UIMAGE_TYPE) \ | |
379 | -a $(UIMAGE_LOADADDR) -e $(UIMAGE_ENTRYADDR) \ | |
380 | -n $(UIMAGE_NAME) -d $(UIMAGE_IN) $(UIMAGE_OUT) | |
381 | ||
24fa0402 LC |
382 | # XZ |
383 | # --------------------------------------------------------------------------- | |
384 | # Use xzkern to compress the kernel image and xzmisc to compress other things. | |
385 | # | |
386 | # xzkern uses a big LZMA2 dictionary since it doesn't increase memory usage | |
387 | # of the kernel decompressor. A BCJ filter is used if it is available for | |
388 | # the target architecture. xzkern also appends uncompressed size of the data | |
389 | # using size_append. The .xz format has the size information available at | |
390 | # the end of the file too, but it's in more complex format and it's good to | |
391 | # avoid changing the part of the boot code that reads the uncompressed size. | |
392 | # Note that the bytes added by size_append will make the xz tool think that | |
393 | # the file is corrupt. This is expected. | |
394 | # | |
395 | # xzmisc doesn't use size_append, so it can be used to create normal .xz | |
396 | # files. xzmisc uses smaller LZMA2 dictionary than xzkern, because a very | |
397 | # big dictionary would increase the memory usage too much in the multi-call | |
398 | # decompression mode. A BCJ filter isn't used either. | |
399 | quiet_cmd_xzkern = XZKERN $@ | |
400 | cmd_xzkern = (cat $(filter-out FORCE,$^) | \ | |
401 | sh $(srctree)/scripts/xz_wrap.sh && \ | |
402 | $(call size_append, $(filter-out FORCE,$^))) > $@ || \ | |
403 | (rm -f $@ ; false) | |
404 | ||
405 | quiet_cmd_xzmisc = XZMISC $@ | |
406 | cmd_xzmisc = (cat $(filter-out FORCE,$^) | \ | |
407 | xz --check=crc32 --lzma2=dict=1MiB) > $@ || \ | |
408 | (rm -f $@ ; false) | |
ebf003f0 MK |
409 | |
410 | # ASM offsets | |
411 | # --------------------------------------------------------------------------- | |
412 | ||
413 | # Default sed regexp - multiline due to syntax constraints | |
cf0c3e68 JH |
414 | # |
415 | # Use [:space:] because LLVM's integrated assembler inserts <tab> around | |
416 | # the .ascii directive whereas GCC keeps the <space> as-is. | |
ebf003f0 | 417 | define sed-offsets |
cf0c3e68 JH |
418 | 's:^[[:space:]]*\.ascii[[:space:]]*"\(.*\)".*:\1:; \ |
419 | /^->/{s:->#\(.*\):/* \1 */:; \ | |
ebf003f0 | 420 | s:^->\([^ ]*\) [\$$#]*\([^ ]*\) \(.*\):#define \1 \2 /* \3 */:; \ |
cf0c3e68 | 421 | s:->::; p;}' |
ebf003f0 MK |
422 | endef |
423 | ||
424 | # Use filechk to avoid rebuilds when a header changes, but the resulting file | |
425 | # does not | |
426 | define filechk_offsets | |
427 | (set -e; \ | |
428 | echo "#ifndef $2"; \ | |
429 | echo "#define $2"; \ | |
430 | echo "/*"; \ | |
431 | echo " * DO NOT MODIFY."; \ | |
432 | echo " *"; \ | |
433 | echo " * This file was generated by Kbuild"; \ | |
434 | echo " */"; \ | |
435 | echo ""; \ | |
436 | sed -ne $(sed-offsets); \ | |
437 | echo ""; \ | |
438 | echo "#endif" ) | |
439 | endef |