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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 | |
f98fe47c MY |
54 | # Replace multi-part objects by their individual parts, |
55 | # including built-in.a from subdirectories | |
56 | real-obj-y := $(foreach m, $(obj-y), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y))),$($(m:.o=-objs)) $($(m:.o=-y)),$(m))) | |
f5f33681 | 57 | real-obj-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 | 58 | |
7e7962dd MY |
59 | # DTB |
60 | # If CONFIG_OF_ALL_DTBS is enabled, all DT blobs are built | |
61 | extra-y += $(dtb-y) | |
62 | extra-$(CONFIG_OF_ALL_DTBS) += $(dtb-) | |
63 | ||
4f0e3a57 RH |
64 | ifneq ($(CHECK_DTBS),) |
65 | extra-y += $(patsubst %.dtb,%.dt.yaml, $(dtb-y)) | |
66 | extra-$(CONFIG_OF_ALL_DTBS) += $(patsubst %.dtb,%.dt.yaml, $(dtb-)) | |
67 | endif | |
68 | ||
e846f0dc | 69 | # Test self-contained headers |
1e21cbfa MY |
70 | |
71 | # Wildcard searches in $(srctree)/$(src)/, but not in $(objtree)/$(obj)/. | |
72 | # Stale generated headers are often left over, so pattern matching should | |
73 | # be avoided. Please notice $(srctree)/$(src)/ and $(objtree)/$(obj) point | |
74 | # to the same location for in-tree building. So, header-test-pattern-y should | |
75 | # be used with care. | |
76 | header-test-y += $(filter-out $(header-test-), \ | |
77 | $(patsubst $(srctree)/$(src)/%, %, \ | |
78 | $(wildcard $(addprefix $(srctree)/$(src)/, \ | |
79 | $(header-test-pattern-y))))) | |
80 | ||
c93a0368 | 81 | extra-$(CONFIG_HEADER_TEST) += $(addsuffix .s, $(header-test-y)) |
e846f0dc | 82 | |
1da177e4 LT |
83 | # Add subdir path |
84 | ||
85 | extra-y := $(addprefix $(obj)/,$(extra-y)) | |
86 | always := $(addprefix $(obj)/,$(always)) | |
87 | targets := $(addprefix $(obj)/,$(targets)) | |
551559e1 | 88 | modorder := $(addprefix $(obj)/,$(modorder)) |
1da177e4 LT |
89 | obj-m := $(addprefix $(obj)/,$(obj-m)) |
90 | lib-y := $(addprefix $(obj)/,$(lib-y)) | |
91 | subdir-obj-y := $(addprefix $(obj)/,$(subdir-obj-y)) | |
f5f33681 MY |
92 | real-obj-y := $(addprefix $(obj)/,$(real-obj-y)) |
93 | real-obj-m := $(addprefix $(obj)/,$(real-obj-m)) | |
1da177e4 | 94 | single-used-m := $(addprefix $(obj)/,$(single-used-m)) |
1da177e4 | 95 | multi-used-m := $(addprefix $(obj)/,$(multi-used-m)) |
1da177e4 | 96 | subdir-ym := $(addprefix $(obj)/,$(subdir-ym)) |
1da177e4 | 97 | |
c0152e9a MY |
98 | # Finds the multi-part object the current object will be linked into. |
99 | # If the object belongs to two or more multi-part objects, all of them are | |
100 | # concatenated with a colon separator. | |
101 | modname-multi = $(subst $(space),:,$(sort $(foreach m,$(multi-used),\ | |
102 | $(if $(filter $*.o, $($(m:.o=-objs)) $($(m:.o=-y)) $($(m:.o=-m))),$(m:.o=))))) | |
103 | ||
104 | modname = $(if $(modname-multi),$(modname-multi),$(basetarget)) | |
105 | ||
1da177e4 | 106 | # These flags are needed for modversions and compiling, so we define them here |
8fdc3fbb | 107 | # $(modname_flags) defines KBUILD_MODNAME as the name of the module it will |
1da177e4 | 108 | # end up in (or would, if it gets compiled in) |
b42841b7 MM |
109 | name-fix = $(squote)$(quote)$(subst $(comma),_,$(subst -,_,$1))$(quote)$(squote) |
110 | basename_flags = -DKBUILD_BASENAME=$(call name-fix,$(basetarget)) | |
aeacb019 | 111 | modname_flags = -DKBUILD_MODNAME=$(call name-fix,$(modname)) |
1da177e4 | 112 | |
4e13d47c | 113 | orig_c_flags = $(KBUILD_CPPFLAGS) $(KBUILD_CFLAGS) \ |
d8672b40 | 114 | $(ccflags-y) $(CFLAGS_$(basetarget).o) |
656ee82c | 115 | _c_flags = $(filter-out $(CFLAGS_REMOVE_$(basetarget).o), $(orig_c_flags)) |
4e13d47c | 116 | orig_a_flags = $(KBUILD_CPPFLAGS) $(KBUILD_AFLAGS) \ |
d8672b40 | 117 | $(asflags-y) $(AFLAGS_$(basetarget).o) |
a7e137eb | 118 | _a_flags = $(filter-out $(AFLAGS_REMOVE_$(basetarget).o), $(orig_a_flags)) |
f77bf014 | 119 | _cpp_flags = $(KBUILD_CPPFLAGS) $(cppflags-y) $(CPPFLAGS_$(@F)) |
1da177e4 | 120 | |
2521f2c2 PO |
121 | # |
122 | # Enable gcov profiling flags for a file, directory or for all files depending | |
123 | # on variables GCOV_PROFILE_obj.o, GCOV_PROFILE and CONFIG_GCOV_PROFILE_ALL | |
124 | # (in this order) | |
125 | # | |
126 | ifeq ($(CONFIG_GCOV_KERNEL),y) | |
127 | _c_flags += $(if $(patsubst n%,, \ | |
128 | $(GCOV_PROFILE_$(basetarget).o)$(GCOV_PROFILE)$(CONFIG_GCOV_PROFILE_ALL)), \ | |
129 | $(CFLAGS_GCOV)) | |
130 | endif | |
131 | ||
0b24becc AR |
132 | # |
133 | # Enable address sanitizer flags for kernel except some files or directories | |
134 | # we don't want to check (depends on variables KASAN_SANITIZE_obj.o, KASAN_SANITIZE) | |
135 | # | |
136 | ifeq ($(CONFIG_KASAN),y) | |
137 | _c_flags += $(if $(patsubst n%,, \ | |
138 | $(KASAN_SANITIZE_$(basetarget).o)$(KASAN_SANITIZE)y), \ | |
0e410e15 | 139 | $(CFLAGS_KASAN), $(CFLAGS_KASAN_NOSANITIZE)) |
0b24becc AR |
140 | endif |
141 | ||
c6d30853 AR |
142 | ifeq ($(CONFIG_UBSAN),y) |
143 | _c_flags += $(if $(patsubst n%,, \ | |
144 | $(UBSAN_SANITIZE_$(basetarget).o)$(UBSAN_SANITIZE)$(CONFIG_UBSAN_SANITIZE_ALL)), \ | |
145 | $(CFLAGS_UBSAN)) | |
146 | endif | |
147 | ||
5c9a8750 DV |
148 | ifeq ($(CONFIG_KCOV),y) |
149 | _c_flags += $(if $(patsubst n%,, \ | |
a4691dea | 150 | $(KCOV_INSTRUMENT_$(basetarget).o)$(KCOV_INSTRUMENT)$(CONFIG_KCOV_INSTRUMENT_ALL)), \ |
5c9a8750 DV |
151 | $(CFLAGS_KCOV)) |
152 | endif | |
153 | ||
cdd750bf MY |
154 | # $(srctree)/$(src) for including checkin headers from generated source files |
155 | # $(objtree)/$(obj) for including generated headers from checkin source files | |
58156ba4 | 156 | ifeq ($(KBUILD_EXTMOD),) |
051f278e | 157 | ifdef building_out_of_srctree |
cdd750bf MY |
158 | _c_flags += -I $(srctree)/$(src) -I $(objtree)/$(obj) |
159 | _a_flags += -I $(srctree)/$(src) -I $(objtree)/$(obj) | |
160 | _cpp_flags += -I $(srctree)/$(src) -I $(objtree)/$(obj) | |
1da177e4 | 161 | endif |
58156ba4 | 162 | endif |
1da177e4 | 163 | |
d8672b40 | 164 | c_flags = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(LINUXINCLUDE) \ |
a95b37e2 | 165 | -include $(srctree)/include/linux/compiler_types.h \ |
cdd750bf | 166 | $(_c_flags) $(modkern_cflags) \ |
b42841b7 | 167 | $(basename_flags) $(modname_flags) |
1da177e4 | 168 | |
d8672b40 | 169 | a_flags = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(LINUXINCLUDE) \ |
cdd750bf | 170 | $(_a_flags) $(modkern_aflags) |
1da177e4 | 171 | |
d8672b40 | 172 | cpp_flags = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(LINUXINCLUDE) \ |
cdd750bf | 173 | $(_cpp_flags) |
1da177e4 | 174 | |
d503ac53 | 175 | ld_flags = $(KBUILD_LDFLAGS) $(ldflags-y) $(LDFLAGS_$(@F)) |
1da177e4 | 176 | |
50f9ddaf MY |
177 | DTC_INCLUDE := $(srctree)/scripts/dtc/include-prefixes |
178 | ||
b0a4d8b3 | 179 | dtc_cpp_flags = -Wp,-MD,$(depfile).pre.tmp -nostdinc \ |
50f9ddaf | 180 | $(addprefix -I,$(DTC_INCLUDE)) \ |
e570d7c1 SW |
181 | -undef -D__DTS__ |
182 | ||
c8589d1e MY |
183 | # Useful for describing the dependency of composite objects |
184 | # Usage: | |
185 | # $(call multi_depend, multi_used_targets, suffix_to_remove, suffix_to_add) | |
186 | define multi_depend | |
187 | $(foreach m, $(notdir $1), \ | |
188 | $(eval $(obj)/$m: \ | |
189 | $(addprefix $(obj)/, $(foreach s, $3, $($(m:%$(strip $2)=%$(s))))))) | |
190 | endef | |
191 | ||
7373f4f8 AL |
192 | # LEX |
193 | # --------------------------------------------------------------------------- | |
7373f4f8 | 194 | quiet_cmd_flex = LEX $@ |
eea199b4 | 195 | cmd_flex = $(LEX) -o$@ -L $< |
7373f4f8 | 196 | |
833e6224 | 197 | $(obj)/%.lex.c: $(src)/%.l FORCE |
033dba2e | 198 | $(call if_changed,flex) |
7373f4f8 AL |
199 | |
200 | # YACC | |
201 | # --------------------------------------------------------------------------- | |
7373f4f8 | 202 | quiet_cmd_bison = YACC $@ |
eea199b4 | 203 | cmd_bison = $(YACC) -o$@ -t -l $< |
7373f4f8 | 204 | |
833e6224 | 205 | $(obj)/%.tab.c: $(src)/%.y FORCE |
033dba2e | 206 | $(call if_changed,bison) |
7373f4f8 AL |
207 | |
208 | quiet_cmd_bison_h = YACC $@ | |
d59fbbd0 | 209 | cmd_bison_h = $(YACC) -o/dev/null --defines=$@ -t -l $< |
7373f4f8 | 210 | |
833e6224 | 211 | $(obj)/%.tab.h: $(src)/%.y FORCE |
033dba2e MY |
212 | $(call if_changed,bison_h) |
213 | ||
1da177e4 LT |
214 | # Shipped files |
215 | # =========================================================================== | |
216 | ||
217 | quiet_cmd_shipped = SHIPPED $@ | |
218 | cmd_shipped = cat $< > $@ | |
219 | ||
991d76c9 | 220 | $(obj)/%: $(src)/%_shipped |
1da177e4 LT |
221 | $(call cmd,shipped) |
222 | ||
223 | # Commands useful for building a boot image | |
224 | # =========================================================================== | |
38385f8f | 225 | # |
1da177e4 LT |
226 | # Use as following: |
227 | # | |
228 | # target: source(s) FORCE | |
229 | # $(if_changed,ld/objcopy/gzip) | |
230 | # | |
836caba7 | 231 | # and add target to extra-y so that we know we have to |
1da177e4 LT |
232 | # read in the saved command line |
233 | ||
234 | # Linking | |
235 | # --------------------------------------------------------------------------- | |
236 | ||
237 | quiet_cmd_ld = LD $@ | |
afa974b7 | 238 | cmd_ld = $(LD) $(ld_flags) $(real-prereqs) -o $@ |
1da177e4 | 239 | |
898f5a00 MY |
240 | # Archive |
241 | # --------------------------------------------------------------------------- | |
242 | ||
243 | quiet_cmd_ar = AR $@ | |
244 | cmd_ar = rm -f $@; $(AR) rcsTP$(KBUILD_ARFLAGS) $@ $(real-prereqs) | |
245 | ||
1da177e4 LT |
246 | # Objcopy |
247 | # --------------------------------------------------------------------------- | |
248 | ||
249 | quiet_cmd_objcopy = OBJCOPY $@ | |
250 | cmd_objcopy = $(OBJCOPY) $(OBJCOPYFLAGS) $(OBJCOPYFLAGS_$(@F)) $< $@ | |
251 | ||
252 | # Gzip | |
253 | # --------------------------------------------------------------------------- | |
254 | ||
255 | quiet_cmd_gzip = GZIP $@ | |
afa974b7 | 256 | cmd_gzip = cat $(real-prereqs) | gzip -n -f -9 > $@ |
1da177e4 | 257 | |
aab94339 DB |
258 | # DTC |
259 | # --------------------------------------------------------------------------- | |
6b22b3d1 | 260 | DTC ?= $(objtree)/scripts/dtc/dtc |
aab94339 | 261 | |
bc553986 | 262 | # Disable noisy checks by default |
f759625a | 263 | ifeq ($(findstring 1,$(KBUILD_ENABLE_EXTRA_GCC_CHECKS)),) |
8654cb8d | 264 | DTC_FLAGS += -Wno-unit_address_vs_reg \ |
8654cb8d | 265 | -Wno-unit_address_format \ |
4fd98e37 RH |
266 | -Wno-avoid_unnecessary_addr_size \ |
267 | -Wno-alias_paths \ | |
74656b68 | 268 | -Wno-graph_child_address \ |
70523a3c | 269 | -Wno-simple_bus_reg \ |
74656b68 | 270 | -Wno-unique_unit_address \ |
8654cb8d | 271 | -Wno-pci_device_reg |
bc553986 RH |
272 | endif |
273 | ||
f759625a | 274 | ifneq ($(findstring 2,$(KBUILD_ENABLE_EXTRA_GCC_CHECKS)),) |
8654cb8d RH |
275 | DTC_FLAGS += -Wnode_name_chars_strict \ |
276 | -Wproperty_name_chars_strict | |
bc553986 RH |
277 | endif |
278 | ||
331f7416 FR |
279 | DTC_FLAGS += $(DTC_FLAGS_$(basetarget)) |
280 | ||
aab94339 | 281 | # Generate an assembly file to wrap the output of the device tree compiler |
1c00a47e | 282 | quiet_cmd_dt_S_dtb= DTB $@ |
aab94339 | 283 | cmd_dt_S_dtb= \ |
b79c6aa6 | 284 | { \ |
aab94339 DB |
285 | echo '\#include <asm-generic/vmlinux.lds.h>'; \ |
286 | echo '.section .dtb.init.rodata,"a"'; \ | |
287 | echo '.balign STRUCT_ALIGNMENT'; \ | |
55fe6da9 JH |
288 | echo '.global __dtb_$(subst -,_,$(*F))_begin'; \ |
289 | echo '__dtb_$(subst -,_,$(*F))_begin:'; \ | |
aab94339 | 290 | echo '.incbin "$<" '; \ |
55fe6da9 JH |
291 | echo '__dtb_$(subst -,_,$(*F))_end:'; \ |
292 | echo '.global __dtb_$(subst -,_,$(*F))_end'; \ | |
aab94339 | 293 | echo '.balign STRUCT_ALIGNMENT'; \ |
b79c6aa6 | 294 | } > $@ |
aab94339 | 295 | |
a7f92419 MY |
296 | $(obj)/%.dtb.S: $(obj)/%.dtb FORCE |
297 | $(call if_changed,dt_S_dtb) | |
aab94339 DB |
298 | |
299 | quiet_cmd_dtc = DTC $@ | |
77479b38 | 300 | cmd_dtc = mkdir -p $(dir ${dtc-tmp}) ; \ |
37c8a5fa | 301 | $(HOSTCC) -E $(dtc_cpp_flags) -x assembler-with-cpp -o $(dtc-tmp) $< ; \ |
4f0e3a57 | 302 | $(DTC) -O $(2) -o $@ -b 0 \ |
50f9ddaf | 303 | $(addprefix -i,$(dir $<) $(DTC_INCLUDE)) $(DTC_FLAGS) \ |
b0a4d8b3 IC |
304 | -d $(depfile).dtc.tmp $(dtc-tmp) ; \ |
305 | cat $(depfile).pre.tmp $(depfile).dtc.tmp > $(depfile) | |
1da177e4 | 306 | |
b8fc5b21 | 307 | $(obj)/%.dtb: $(src)/%.dts $(DTC) FORCE |
4f0e3a57 RH |
308 | $(call if_changed_dep,dtc,dtb) |
309 | ||
310 | DT_CHECKER ?= dt-validate | |
311 | DT_BINDING_DIR := Documentation/devicetree/bindings | |
312 | DT_TMP_SCHEMA := $(objtree)/$(DT_BINDING_DIR)/processed-schema.yaml | |
313 | ||
314 | quiet_cmd_dtb_check = CHECK $@ | |
05aeca7c | 315 | cmd_dtb_check = $(DT_CHECKER) -u $(srctree)/$(DT_BINDING_DIR) -p $(DT_TMP_SCHEMA) $@ ; |
4f0e3a57 RH |
316 | |
317 | define rule_dtc_dt_yaml | |
f5688663 MY |
318 | $(call cmd_and_fixdep,dtc,yaml) |
319 | $(call cmd,dtb_check) | |
4f0e3a57 RH |
320 | endef |
321 | ||
322 | $(obj)/%.dt.yaml: $(src)/%.dts $(DTC) $(DT_TMP_SCHEMA) FORCE | |
323 | $(call if_changed_rule,dtc_dt_yaml) | |
90b335fb | 324 | |
b0a4d8b3 | 325 | dtc-tmp = $(subst $(comma),_,$(dot-target).dts.tmp) |
22435f38 | 326 | |
bc22c17e AK |
327 | # Bzip2 |
328 | # --------------------------------------------------------------------------- | |
329 | ||
d3dd3b5a PA |
330 | # Bzip2 and LZMA do not include size in file... so we have to fake that; |
331 | # append the size as a 32-bit littleendian number as gzip does. | |
4a2ff67c | 332 | size_append = printf $(shell \ |
d3dd3b5a | 333 | dec_size=0; \ |
afa974b7 | 334 | for F in $(real-prereqs); do \ |
a670b0b4 | 335 | fsize=$$($(CONFIG_SHELL) $(srctree)/scripts/file-size.sh $$F); \ |
d3dd3b5a PA |
336 | dec_size=$$(expr $$dec_size + $$fsize); \ |
337 | done; \ | |
1373411a JN |
338 | printf "%08x\n" $$dec_size | \ |
339 | sed 's/\(..\)/\1 /g' | { \ | |
340 | read ch0 ch1 ch2 ch3; \ | |
341 | for ch in $$ch3 $$ch2 $$ch1 $$ch0; do \ | |
342 | printf '%s%03o' '\\' $$((0x$$ch)); \ | |
343 | done; \ | |
344 | } \ | |
d3dd3b5a PA |
345 | ) |
346 | ||
347 | quiet_cmd_bzip2 = BZIP2 $@ | |
b956c7a6 | 348 | cmd_bzip2 = { cat $(real-prereqs) | bzip2 -9; $(size_append); } > $@ |
bc22c17e AK |
349 | |
350 | # Lzma | |
351 | # --------------------------------------------------------------------------- | |
352 | ||
353 | quiet_cmd_lzma = LZMA $@ | |
b956c7a6 | 354 | cmd_lzma = { cat $(real-prereqs) | lzma -9; $(size_append); } > $@ |
7dd65feb | 355 | |
2d74b2c6 | 356 | quiet_cmd_lzo = LZO $@ |
b956c7a6 | 357 | cmd_lzo = { cat $(real-prereqs) | lzop -9; $(size_append); } > $@ |
d61931d8 | 358 | |
e76e1fdf | 359 | quiet_cmd_lz4 = LZ4 $@ |
b956c7a6 | 360 | cmd_lz4 = { cat $(real-prereqs) | lz4c -l -c1 stdin stdout; \ |
b79c6aa6 | 361 | $(size_append); } > $@ |
e76e1fdf | 362 | |
e3393645 SW |
363 | # U-Boot mkimage |
364 | # --------------------------------------------------------------------------- | |
365 | ||
366 | MKIMAGE := $(srctree)/scripts/mkuboot.sh | |
367 | ||
368 | # SRCARCH just happens to match slightly more than ARCH (on sparc), so reduces | |
369 | # the number of overrides in arch makefiles | |
370 | UIMAGE_ARCH ?= $(SRCARCH) | |
371 | UIMAGE_COMPRESSION ?= $(if $(2),$(2),none) | |
372 | UIMAGE_OPTS-y ?= | |
373 | UIMAGE_TYPE ?= kernel | |
374 | UIMAGE_LOADADDR ?= arch_must_set_this | |
375 | UIMAGE_ENTRYADDR ?= $(UIMAGE_LOADADDR) | |
376 | UIMAGE_NAME ?= 'Linux-$(KERNELRELEASE)' | |
e3393645 | 377 | |
786ac51a | 378 | quiet_cmd_uimage = UIMAGE $@ |
e3393645 SW |
379 | cmd_uimage = $(CONFIG_SHELL) $(MKIMAGE) -A $(UIMAGE_ARCH) -O linux \ |
380 | -C $(UIMAGE_COMPRESSION) $(UIMAGE_OPTS-y) \ | |
381 | -T $(UIMAGE_TYPE) \ | |
382 | -a $(UIMAGE_LOADADDR) -e $(UIMAGE_ENTRYADDR) \ | |
786ac51a | 383 | -n $(UIMAGE_NAME) -d $< $@ |
e3393645 | 384 | |
24fa0402 LC |
385 | # XZ |
386 | # --------------------------------------------------------------------------- | |
387 | # Use xzkern to compress the kernel image and xzmisc to compress other things. | |
388 | # | |
389 | # xzkern uses a big LZMA2 dictionary since it doesn't increase memory usage | |
390 | # of the kernel decompressor. A BCJ filter is used if it is available for | |
391 | # the target architecture. xzkern also appends uncompressed size of the data | |
392 | # using size_append. The .xz format has the size information available at | |
393 | # the end of the file too, but it's in more complex format and it's good to | |
394 | # avoid changing the part of the boot code that reads the uncompressed size. | |
395 | # Note that the bytes added by size_append will make the xz tool think that | |
396 | # the file is corrupt. This is expected. | |
397 | # | |
398 | # xzmisc doesn't use size_append, so it can be used to create normal .xz | |
399 | # files. xzmisc uses smaller LZMA2 dictionary than xzkern, because a very | |
400 | # big dictionary would increase the memory usage too much in the multi-call | |
401 | # decompression mode. A BCJ filter isn't used either. | |
402 | quiet_cmd_xzkern = XZKERN $@ | |
b956c7a6 | 403 | cmd_xzkern = { cat $(real-prereqs) | sh $(srctree)/scripts/xz_wrap.sh; \ |
b79c6aa6 | 404 | $(size_append); } > $@ |
24fa0402 LC |
405 | |
406 | quiet_cmd_xzmisc = XZMISC $@ | |
b79c6aa6 | 407 | cmd_xzmisc = cat $(real-prereqs) | xz --check=crc32 --lzma2=dict=1MiB > $@ |
ebf003f0 MK |
408 | |
409 | # ASM offsets | |
410 | # --------------------------------------------------------------------------- | |
411 | ||
412 | # Default sed regexp - multiline due to syntax constraints | |
cf0c3e68 JH |
413 | # |
414 | # Use [:space:] because LLVM's integrated assembler inserts <tab> around | |
415 | # the .ascii directive whereas GCC keeps the <space> as-is. | |
ebf003f0 | 416 | define sed-offsets |
cf0c3e68 JH |
417 | 's:^[[:space:]]*\.ascii[[:space:]]*"\(.*\)".*:\1:; \ |
418 | /^->/{s:->#\(.*\):/* \1 */:; \ | |
ebf003f0 | 419 | s:^->\([^ ]*\) [\$$#]*\([^ ]*\) \(.*\):#define \1 \2 /* \3 */:; \ |
cf0c3e68 | 420 | s:->::; p;}' |
ebf003f0 MK |
421 | endef |
422 | ||
423 | # Use filechk to avoid rebuilds when a header changes, but the resulting file | |
424 | # does not | |
425 | define filechk_offsets | |
ebf003f0 MK |
426 | echo "#ifndef $2"; \ |
427 | echo "#define $2"; \ | |
428 | echo "/*"; \ | |
429 | echo " * DO NOT MODIFY."; \ | |
430 | echo " *"; \ | |
431 | echo " * This file was generated by Kbuild"; \ | |
432 | echo " */"; \ | |
433 | echo ""; \ | |
43fee2b2 | 434 | sed -ne $(sed-offsets) < $<; \ |
ebf003f0 | 435 | echo ""; \ |
ad774086 | 436 | echo "#endif" |
ebf003f0 | 437 | endef |