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 | ||
720097d8 SR |
8 | # |
9 | # flags that take effect in sub directories | |
10 | export KBUILD_SUBDIR_ASFLAGS := $(KBUILD_SUBDIR_ASFLAGS) $(subdir-asflags-y) | |
11 | export KBUILD_SUBDIR_CCFLAGS := $(KBUILD_SUBDIR_CCFLAGS) $(subdir-ccflags-y) | |
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 | |
18 | ||
19 | obj-m := $(filter-out $(obj-y),$(obj-m)) | |
20 | ||
21 | # Libraries are always collected in one lib file. | |
22 | # Filter out objects already built-in | |
23 | ||
24 | lib-y := $(filter-out $(obj-y), $(sort $(lib-y) $(lib-m))) | |
25 | ||
26 | ||
27 | # Handle objects in subdirs | |
28 | # --------------------------------------------------------------------------- | |
29 | # o if we encounter foo/ in $(obj-y), replace it by foo/built-in.o | |
30 | # and add the directory to the list of dirs to descend into: $(subdir-y) | |
38385f8f | 31 | # o if we encounter foo/ in $(obj-m), remove it from $(obj-m) |
1da177e4 LT |
32 | # and add the directory to the list of dirs to descend into: $(subdir-m) |
33 | ||
551559e1 TH |
34 | # Determine modorder. |
35 | # Unfortunately, we don't have information about ordering between -y | |
36 | # and -m subdirs. Just put -y's first. | |
37 | modorder := $(patsubst %/,%/modules.order, $(filter %/, $(obj-y)) $(obj-m:.o=.ko)) | |
38 | ||
1da177e4 LT |
39 | __subdir-y := $(patsubst %/,%,$(filter %/, $(obj-y))) |
40 | subdir-y += $(__subdir-y) | |
41 | __subdir-m := $(patsubst %/,%,$(filter %/, $(obj-m))) | |
42 | subdir-m += $(__subdir-m) | |
43 | obj-y := $(patsubst %/, %/built-in.o, $(obj-y)) | |
44 | obj-m := $(filter-out %/, $(obj-m)) | |
45 | ||
46 | # Subdirectories we need to descend into | |
47 | ||
48 | subdir-ym := $(sort $(subdir-y) $(subdir-m)) | |
49 | ||
38385f8f | 50 | # if $(foo-objs) exists, foo.o is a composite object |
1da177e4 | 51 | multi-used-y := $(sort $(foreach m,$(obj-y), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y))), $(m)))) |
cf4f2193 | 52 | multi-used-m := $(sort $(foreach m,$(obj-m), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y)) $($(m:.o=-m))), $(m)))) |
1da177e4 LT |
53 | multi-used := $(multi-used-y) $(multi-used-m) |
54 | single-used-m := $(sort $(filter-out $(multi-used-m),$(obj-m))) | |
55 | ||
56 | # Build list of the parts of our composite objects, our composite | |
57 | # objects depend on those (obviously) | |
58 | multi-objs-y := $(foreach m, $(multi-used-y), $($(m:.o=-objs)) $($(m:.o=-y))) | |
59 | multi-objs-m := $(foreach m, $(multi-used-m), $($(m:.o=-objs)) $($(m:.o=-y))) | |
60 | multi-objs := $(multi-objs-y) $(multi-objs-m) | |
61 | ||
f5fb9765 SR |
62 | # $(subdir-obj-y) is the list of objects in $(obj-y) which uses dir/ to |
63 | # tell kbuild to descend | |
64 | subdir-obj-y := $(filter %/built-in.o, $(obj-y)) | |
1da177e4 LT |
65 | |
66 | # $(obj-dirs) is a list of directories that contain object files | |
4d47dde4 | 67 | obj-dirs := $(dir $(multi-objs) $(obj-y)) |
1da177e4 LT |
68 | |
69 | # Replace multi-part objects by their individual parts, look at local dir only | |
70 | 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))) $(extra-y) | |
cf4f2193 | 71 | 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 | 72 | |
7e7962dd MY |
73 | # DTB |
74 | # If CONFIG_OF_ALL_DTBS is enabled, all DT blobs are built | |
75 | extra-y += $(dtb-y) | |
76 | extra-$(CONFIG_OF_ALL_DTBS) += $(dtb-) | |
77 | ||
1da177e4 LT |
78 | # Add subdir path |
79 | ||
80 | extra-y := $(addprefix $(obj)/,$(extra-y)) | |
81 | always := $(addprefix $(obj)/,$(always)) | |
82 | targets := $(addprefix $(obj)/,$(targets)) | |
551559e1 | 83 | modorder := $(addprefix $(obj)/,$(modorder)) |
1da177e4 LT |
84 | obj-y := $(addprefix $(obj)/,$(obj-y)) |
85 | obj-m := $(addprefix $(obj)/,$(obj-m)) | |
86 | lib-y := $(addprefix $(obj)/,$(lib-y)) | |
87 | subdir-obj-y := $(addprefix $(obj)/,$(subdir-obj-y)) | |
88 | real-objs-y := $(addprefix $(obj)/,$(real-objs-y)) | |
89 | real-objs-m := $(addprefix $(obj)/,$(real-objs-m)) | |
90 | single-used-m := $(addprefix $(obj)/,$(single-used-m)) | |
91 | multi-used-y := $(addprefix $(obj)/,$(multi-used-y)) | |
92 | multi-used-m := $(addprefix $(obj)/,$(multi-used-m)) | |
93 | multi-objs-y := $(addprefix $(obj)/,$(multi-objs-y)) | |
94 | multi-objs-m := $(addprefix $(obj)/,$(multi-objs-m)) | |
95 | subdir-ym := $(addprefix $(obj)/,$(subdir-ym)) | |
96 | obj-dirs := $(addprefix $(obj)/,$(obj-dirs)) | |
97 | ||
1da177e4 LT |
98 | # These flags are needed for modversions and compiling, so we define them here |
99 | # already | |
38385f8f | 100 | # $(modname_flags) #defines KBUILD_MODNAME as the name of the module it will |
1da177e4 | 101 | # end up in (or would, if it gets compiled in) |
5bb0571b MM |
102 | # Note: Files that end up in two or more modules are compiled without the |
103 | # KBUILD_MODNAME definition. The reason is that any made-up name would | |
104 | # differ in different configs. | |
b42841b7 MM |
105 | name-fix = $(squote)$(quote)$(subst $(comma),_,$(subst -,_,$1))$(quote)$(squote) |
106 | basename_flags = -DKBUILD_BASENAME=$(call name-fix,$(basetarget)) | |
f83b5e32 | 107 | modname_flags = $(if $(filter 1,$(words $(modname))),\ |
b42841b7 | 108 | -DKBUILD_MODNAME=$(call name-fix,$(modname))) |
1da177e4 | 109 | |
720097d8 | 110 | orig_c_flags = $(KBUILD_CPPFLAGS) $(KBUILD_CFLAGS) $(KBUILD_SUBDIR_CCFLAGS) \ |
d8672b40 | 111 | $(ccflags-y) $(CFLAGS_$(basetarget).o) |
656ee82c | 112 | _c_flags = $(filter-out $(CFLAGS_REMOVE_$(basetarget).o), $(orig_c_flags)) |
a7e137eb | 113 | orig_a_flags = $(KBUILD_CPPFLAGS) $(KBUILD_AFLAGS) $(KBUILD_SUBDIR_ASFLAGS) \ |
d8672b40 | 114 | $(asflags-y) $(AFLAGS_$(basetarget).o) |
a7e137eb | 115 | _a_flags = $(filter-out $(AFLAGS_REMOVE_$(basetarget).o), $(orig_a_flags)) |
f77bf014 | 116 | _cpp_flags = $(KBUILD_CPPFLAGS) $(cppflags-y) $(CPPFLAGS_$(@F)) |
1da177e4 | 117 | |
2521f2c2 PO |
118 | # |
119 | # Enable gcov profiling flags for a file, directory or for all files depending | |
120 | # on variables GCOV_PROFILE_obj.o, GCOV_PROFILE and CONFIG_GCOV_PROFILE_ALL | |
121 | # (in this order) | |
122 | # | |
123 | ifeq ($(CONFIG_GCOV_KERNEL),y) | |
124 | _c_flags += $(if $(patsubst n%,, \ | |
125 | $(GCOV_PROFILE_$(basetarget).o)$(GCOV_PROFILE)$(CONFIG_GCOV_PROFILE_ALL)), \ | |
126 | $(CFLAGS_GCOV)) | |
127 | endif | |
128 | ||
0b24becc AR |
129 | # |
130 | # Enable address sanitizer flags for kernel except some files or directories | |
131 | # we don't want to check (depends on variables KASAN_SANITIZE_obj.o, KASAN_SANITIZE) | |
132 | # | |
133 | ifeq ($(CONFIG_KASAN),y) | |
134 | _c_flags += $(if $(patsubst n%,, \ | |
135 | $(KASAN_SANITIZE_$(basetarget).o)$(KASAN_SANITIZE)y), \ | |
136 | $(CFLAGS_KASAN)) | |
137 | endif | |
138 | ||
c6d30853 AR |
139 | ifeq ($(CONFIG_UBSAN),y) |
140 | _c_flags += $(if $(patsubst n%,, \ | |
141 | $(UBSAN_SANITIZE_$(basetarget).o)$(UBSAN_SANITIZE)$(CONFIG_UBSAN_SANITIZE_ALL)), \ | |
142 | $(CFLAGS_UBSAN)) | |
143 | endif | |
144 | ||
5c9a8750 DV |
145 | ifeq ($(CONFIG_KCOV),y) |
146 | _c_flags += $(if $(patsubst n%,, \ | |
a4691dea | 147 | $(KCOV_INSTRUMENT_$(basetarget).o)$(KCOV_INSTRUMENT)$(CONFIG_KCOV_INSTRUMENT_ALL)), \ |
5c9a8750 DV |
148 | $(CFLAGS_KCOV)) |
149 | endif | |
150 | ||
1da177e4 LT |
151 | # If building the kernel in a separate objtree expand all occurrences |
152 | # of -Idir to -I$(srctree)/dir except for absolute paths (starting with '/'). | |
153 | ||
154 | ifeq ($(KBUILD_SRC),) | |
155 | __c_flags = $(_c_flags) | |
156 | __a_flags = $(_a_flags) | |
157 | __cpp_flags = $(_cpp_flags) | |
158 | else | |
159 | ||
1da177e4 LT |
160 | # -I$(obj) locates generated .h files |
161 | # $(call addtree,-I$(obj)) locates .h files in srctree, from generated .c files | |
162 | # and locates generated .h files | |
163 | # FIXME: Replace both with specific CFLAGS* statements in the makefiles | |
4607ebf0 | 164 | __c_flags = $(if $(obj),$(call addtree,-I$(src)) -I$(obj)) \ |
db547ef1 AB |
165 | $(call flags,_c_flags) |
166 | __a_flags = $(call flags,_a_flags) | |
167 | __cpp_flags = $(call flags,_cpp_flags) | |
1da177e4 LT |
168 | endif |
169 | ||
d8672b40 SR |
170 | c_flags = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(LINUXINCLUDE) \ |
171 | $(__c_flags) $(modkern_cflags) \ | |
b42841b7 | 172 | $(basename_flags) $(modname_flags) |
1da177e4 | 173 | |
d8672b40 | 174 | a_flags = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(LINUXINCLUDE) \ |
1da177e4 LT |
175 | $(__a_flags) $(modkern_aflags) |
176 | ||
d8672b40 SR |
177 | cpp_flags = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(LINUXINCLUDE) \ |
178 | $(__cpp_flags) | |
1da177e4 | 179 | |
f77bf014 | 180 | ld_flags = $(LDFLAGS) $(ldflags-y) |
1da177e4 | 181 | |
50f9ddaf MY |
182 | DTC_INCLUDE := $(srctree)/scripts/dtc/include-prefixes |
183 | ||
b0a4d8b3 | 184 | dtc_cpp_flags = -Wp,-MD,$(depfile).pre.tmp -nostdinc \ |
50f9ddaf | 185 | $(addprefix -I,$(DTC_INCLUDE)) \ |
e570d7c1 SW |
186 | -undef -D__DTS__ |
187 | ||
1da177e4 LT |
188 | # Finds the multi-part object the current object will be linked into |
189 | modname-multi = $(sort $(foreach m,$(multi-used),\ | |
190 | $(if $(filter $(subst $(obj)/,,$*.o), $($(m:.o=-objs)) $($(m:.o=-y))),$(m:.o=)))) | |
191 | ||
c8589d1e MY |
192 | # Useful for describing the dependency of composite objects |
193 | # Usage: | |
194 | # $(call multi_depend, multi_used_targets, suffix_to_remove, suffix_to_add) | |
195 | define multi_depend | |
196 | $(foreach m, $(notdir $1), \ | |
197 | $(eval $(obj)/$m: \ | |
198 | $(addprefix $(obj)/, $(foreach s, $3, $($(m:%$(strip $2)=%$(s))))))) | |
199 | endef | |
200 | ||
7373f4f8 AL |
201 | ifdef REGENERATE_PARSERS |
202 | ||
7373f4f8 AL |
203 | # LEX |
204 | # --------------------------------------------------------------------------- | |
205 | LEX_PREFIX = $(if $(LEX_PREFIX_${baseprereq}),$(LEX_PREFIX_${baseprereq}),yy) | |
206 | ||
207 | quiet_cmd_flex = LEX $@ | |
208 | cmd_flex = flex -o$@ -L -P $(LEX_PREFIX) $< | |
209 | ||
58238c81 | 210 | .PRECIOUS: $(src)/%.lex.c_shipped |
7373f4f8 AL |
211 | $(src)/%.lex.c_shipped: $(src)/%.l |
212 | $(call cmd,flex) | |
213 | ||
214 | # YACC | |
215 | # --------------------------------------------------------------------------- | |
216 | YACC_PREFIX = $(if $(YACC_PREFIX_${baseprereq}),$(YACC_PREFIX_${baseprereq}),yy) | |
217 | ||
218 | quiet_cmd_bison = YACC $@ | |
219 | cmd_bison = bison -o$@ -t -l -p $(YACC_PREFIX) $< | |
220 | ||
58238c81 | 221 | .PRECIOUS: $(src)/%.tab.c_shipped |
7373f4f8 AL |
222 | $(src)/%.tab.c_shipped: $(src)/%.y |
223 | $(call cmd,bison) | |
224 | ||
225 | quiet_cmd_bison_h = YACC $@ | |
226 | cmd_bison_h = bison -o/dev/null --defines=$@ -t -l -p $(YACC_PREFIX) $< | |
227 | ||
58238c81 | 228 | .PRECIOUS: $(src)/%.tab.h_shipped |
7373f4f8 AL |
229 | $(src)/%.tab.h_shipped: $(src)/%.y |
230 | $(call cmd,bison_h) | |
231 | ||
232 | endif | |
233 | ||
1da177e4 LT |
234 | # Shipped files |
235 | # =========================================================================== | |
236 | ||
237 | quiet_cmd_shipped = SHIPPED $@ | |
238 | cmd_shipped = cat $< > $@ | |
239 | ||
991d76c9 | 240 | $(obj)/%: $(src)/%_shipped |
1da177e4 LT |
241 | $(call cmd,shipped) |
242 | ||
243 | # Commands useful for building a boot image | |
244 | # =========================================================================== | |
38385f8f | 245 | # |
1da177e4 LT |
246 | # Use as following: |
247 | # | |
248 | # target: source(s) FORCE | |
249 | # $(if_changed,ld/objcopy/gzip) | |
250 | # | |
836caba7 | 251 | # and add target to extra-y so that we know we have to |
1da177e4 LT |
252 | # read in the saved command line |
253 | ||
254 | # Linking | |
255 | # --------------------------------------------------------------------------- | |
256 | ||
257 | quiet_cmd_ld = LD $@ | |
f77bf014 | 258 | cmd_ld = $(LD) $(LDFLAGS) $(ldflags-y) $(LDFLAGS_$(@F)) \ |
38385f8f | 259 | $(filter-out FORCE,$^) -o $@ |
1da177e4 LT |
260 | |
261 | # Objcopy | |
262 | # --------------------------------------------------------------------------- | |
263 | ||
264 | quiet_cmd_objcopy = OBJCOPY $@ | |
265 | cmd_objcopy = $(OBJCOPY) $(OBJCOPYFLAGS) $(OBJCOPYFLAGS_$(@F)) $< $@ | |
266 | ||
267 | # Gzip | |
268 | # --------------------------------------------------------------------------- | |
269 | ||
270 | quiet_cmd_gzip = GZIP $@ | |
6ae9ecb8 | 271 | cmd_gzip = (cat $(filter-out FORCE,$^) | gzip -n -f -9 > $@) || \ |
d3dd3b5a | 272 | (rm -f $@ ; false) |
1da177e4 | 273 | |
aab94339 DB |
274 | # DTC |
275 | # --------------------------------------------------------------------------- | |
6b22b3d1 | 276 | DTC ?= $(objtree)/scripts/dtc/dtc |
aab94339 | 277 | |
bc553986 RH |
278 | # Disable noisy checks by default |
279 | ifeq ($(KBUILD_ENABLE_EXTRA_GCC_CHECKS),) | |
8654cb8d RH |
280 | DTC_FLAGS += -Wno-unit_address_vs_reg \ |
281 | -Wno-simple_bus_reg \ | |
282 | -Wno-unit_address_format \ | |
283 | -Wno-pci_bridge \ | |
284 | -Wno-pci_device_bus_num \ | |
285 | -Wno-pci_device_reg | |
bc553986 RH |
286 | endif |
287 | ||
8654cb8d RH |
288 | ifeq ($(KBUILD_ENABLE_EXTRA_GCC_CHECKS),2) |
289 | DTC_FLAGS += -Wnode_name_chars_strict \ | |
290 | -Wproperty_name_chars_strict | |
bc553986 RH |
291 | endif |
292 | ||
331f7416 FR |
293 | DTC_FLAGS += $(DTC_FLAGS_$(basetarget)) |
294 | ||
aab94339 | 295 | # Generate an assembly file to wrap the output of the device tree compiler |
1c00a47e | 296 | quiet_cmd_dt_S_dtb= DTB $@ |
aab94339 DB |
297 | cmd_dt_S_dtb= \ |
298 | ( \ | |
299 | echo '\#include <asm-generic/vmlinux.lds.h>'; \ | |
300 | echo '.section .dtb.init.rodata,"a"'; \ | |
301 | echo '.balign STRUCT_ALIGNMENT'; \ | |
302 | echo '.global __dtb_$(*F)_begin'; \ | |
303 | echo '__dtb_$(*F)_begin:'; \ | |
304 | echo '.incbin "$<" '; \ | |
305 | echo '__dtb_$(*F)_end:'; \ | |
306 | echo '.global __dtb_$(*F)_end'; \ | |
307 | echo '.balign STRUCT_ALIGNMENT'; \ | |
308 | ) > $@ | |
309 | ||
310 | $(obj)/%.dtb.S: $(obj)/%.dtb | |
311 | $(call cmd,dt_S_dtb) | |
312 | ||
313 | quiet_cmd_dtc = DTC $@ | |
77479b38 NR |
314 | cmd_dtc = mkdir -p $(dir ${dtc-tmp}) ; \ |
315 | $(CPP) $(dtc_cpp_flags) -x assembler-with-cpp -o $(dtc-tmp) $< ; \ | |
6b22b3d1 | 316 | $(DTC) -O dtb -o $@ -b 0 \ |
50f9ddaf | 317 | $(addprefix -i,$(dir $<) $(DTC_INCLUDE)) $(DTC_FLAGS) \ |
b0a4d8b3 IC |
318 | -d $(depfile).dtc.tmp $(dtc-tmp) ; \ |
319 | cat $(depfile).pre.tmp $(depfile).dtc.tmp > $(depfile) | |
1da177e4 | 320 | |
90b335fb SW |
321 | $(obj)/%.dtb: $(src)/%.dts FORCE |
322 | $(call if_changed_dep,dtc) | |
323 | ||
b0a4d8b3 | 324 | dtc-tmp = $(subst $(comma),_,$(dot-target).dts.tmp) |
22435f38 | 325 | |
bc22c17e AK |
326 | # Bzip2 |
327 | # --------------------------------------------------------------------------- | |
328 | ||
d3dd3b5a PA |
329 | # Bzip2 and LZMA do not include size in file... so we have to fake that; |
330 | # append the size as a 32-bit littleendian number as gzip does. | |
4a2ff67c | 331 | size_append = printf $(shell \ |
d3dd3b5a PA |
332 | dec_size=0; \ |
333 | for F in $1; do \ | |
334 | fsize=$$(stat -c "%s" $$F); \ | |
335 | dec_size=$$(expr $$dec_size + $$fsize); \ | |
336 | done; \ | |
1373411a JN |
337 | printf "%08x\n" $$dec_size | \ |
338 | sed 's/\(..\)/\1 /g' | { \ | |
339 | read ch0 ch1 ch2 ch3; \ | |
340 | for ch in $$ch3 $$ch2 $$ch1 $$ch0; do \ | |
341 | printf '%s%03o' '\\' $$((0x$$ch)); \ | |
342 | done; \ | |
343 | } \ | |
d3dd3b5a PA |
344 | ) |
345 | ||
346 | quiet_cmd_bzip2 = BZIP2 $@ | |
347 | cmd_bzip2 = (cat $(filter-out FORCE,$^) | \ | |
348 | bzip2 -9 && $(call size_append, $(filter-out FORCE,$^))) > $@ || \ | |
349 | (rm -f $@ ; false) | |
bc22c17e AK |
350 | |
351 | # Lzma | |
352 | # --------------------------------------------------------------------------- | |
353 | ||
354 | quiet_cmd_lzma = LZMA $@ | |
d3dd3b5a PA |
355 | cmd_lzma = (cat $(filter-out FORCE,$^) | \ |
356 | lzma -9 && $(call size_append, $(filter-out FORCE,$^))) > $@ || \ | |
357 | (rm -f $@ ; false) | |
7dd65feb | 358 | |
2d74b2c6 | 359 | quiet_cmd_lzo = LZO $@ |
7dd65feb AT |
360 | cmd_lzo = (cat $(filter-out FORCE,$^) | \ |
361 | lzop -9 && $(call size_append, $(filter-out FORCE,$^))) > $@ || \ | |
362 | (rm -f $@ ; false) | |
d61931d8 | 363 | |
e76e1fdf KL |
364 | quiet_cmd_lz4 = LZ4 $@ |
365 | cmd_lz4 = (cat $(filter-out FORCE,$^) | \ | |
366 | lz4c -l -c1 stdin stdout && $(call size_append, $(filter-out FORCE,$^))) > $@ || \ | |
367 | (rm -f $@ ; false) | |
368 | ||
e3393645 SW |
369 | # U-Boot mkimage |
370 | # --------------------------------------------------------------------------- | |
371 | ||
372 | MKIMAGE := $(srctree)/scripts/mkuboot.sh | |
373 | ||
374 | # SRCARCH just happens to match slightly more than ARCH (on sparc), so reduces | |
375 | # the number of overrides in arch makefiles | |
376 | UIMAGE_ARCH ?= $(SRCARCH) | |
377 | UIMAGE_COMPRESSION ?= $(if $(2),$(2),none) | |
378 | UIMAGE_OPTS-y ?= | |
379 | UIMAGE_TYPE ?= kernel | |
380 | UIMAGE_LOADADDR ?= arch_must_set_this | |
381 | UIMAGE_ENTRYADDR ?= $(UIMAGE_LOADADDR) | |
382 | UIMAGE_NAME ?= 'Linux-$(KERNELRELEASE)' | |
383 | UIMAGE_IN ?= $< | |
384 | UIMAGE_OUT ?= $@ | |
385 | ||
386 | quiet_cmd_uimage = UIMAGE $(UIMAGE_OUT) | |
387 | cmd_uimage = $(CONFIG_SHELL) $(MKIMAGE) -A $(UIMAGE_ARCH) -O linux \ | |
388 | -C $(UIMAGE_COMPRESSION) $(UIMAGE_OPTS-y) \ | |
389 | -T $(UIMAGE_TYPE) \ | |
390 | -a $(UIMAGE_LOADADDR) -e $(UIMAGE_ENTRYADDR) \ | |
391 | -n $(UIMAGE_NAME) -d $(UIMAGE_IN) $(UIMAGE_OUT) | |
392 | ||
24fa0402 LC |
393 | # XZ |
394 | # --------------------------------------------------------------------------- | |
395 | # Use xzkern to compress the kernel image and xzmisc to compress other things. | |
396 | # | |
397 | # xzkern uses a big LZMA2 dictionary since it doesn't increase memory usage | |
398 | # of the kernel decompressor. A BCJ filter is used if it is available for | |
399 | # the target architecture. xzkern also appends uncompressed size of the data | |
400 | # using size_append. The .xz format has the size information available at | |
401 | # the end of the file too, but it's in more complex format and it's good to | |
402 | # avoid changing the part of the boot code that reads the uncompressed size. | |
403 | # Note that the bytes added by size_append will make the xz tool think that | |
404 | # the file is corrupt. This is expected. | |
405 | # | |
406 | # xzmisc doesn't use size_append, so it can be used to create normal .xz | |
407 | # files. xzmisc uses smaller LZMA2 dictionary than xzkern, because a very | |
408 | # big dictionary would increase the memory usage too much in the multi-call | |
409 | # decompression mode. A BCJ filter isn't used either. | |
410 | quiet_cmd_xzkern = XZKERN $@ | |
411 | cmd_xzkern = (cat $(filter-out FORCE,$^) | \ | |
412 | sh $(srctree)/scripts/xz_wrap.sh && \ | |
413 | $(call size_append, $(filter-out FORCE,$^))) > $@ || \ | |
414 | (rm -f $@ ; false) | |
415 | ||
416 | quiet_cmd_xzmisc = XZMISC $@ | |
417 | cmd_xzmisc = (cat $(filter-out FORCE,$^) | \ | |
418 | xz --check=crc32 --lzma2=dict=1MiB) > $@ || \ | |
419 | (rm -f $@ ; false) | |
ebf003f0 MK |
420 | |
421 | # ASM offsets | |
422 | # --------------------------------------------------------------------------- | |
423 | ||
424 | # Default sed regexp - multiline due to syntax constraints | |
cf0c3e68 JH |
425 | # |
426 | # Use [:space:] because LLVM's integrated assembler inserts <tab> around | |
427 | # the .ascii directive whereas GCC keeps the <space> as-is. | |
ebf003f0 | 428 | define sed-offsets |
cf0c3e68 JH |
429 | 's:^[[:space:]]*\.ascii[[:space:]]*"\(.*\)".*:\1:; \ |
430 | /^->/{s:->#\(.*\):/* \1 */:; \ | |
ebf003f0 | 431 | s:^->\([^ ]*\) [\$$#]*\([^ ]*\) \(.*\):#define \1 \2 /* \3 */:; \ |
cf0c3e68 | 432 | s:->::; p;}' |
ebf003f0 MK |
433 | endef |
434 | ||
435 | # Use filechk to avoid rebuilds when a header changes, but the resulting file | |
436 | # does not | |
437 | define filechk_offsets | |
438 | (set -e; \ | |
439 | echo "#ifndef $2"; \ | |
440 | echo "#define $2"; \ | |
441 | echo "/*"; \ | |
442 | echo " * DO NOT MODIFY."; \ | |
443 | echo " *"; \ | |
444 | echo " * This file was generated by Kbuild"; \ | |
445 | echo " */"; \ | |
446 | echo ""; \ | |
447 | sed -ne $(sed-offsets); \ | |
448 | echo ""; \ | |
449 | echo "#endif" ) | |
450 | endef |