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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 += $(EXTRA_LDFLAGS) | |
59721d4e MY |
7 | ifneq ($(always),) |
8 | $(warning 'always' is deprecated. Please use 'always-y' instead) | |
5f2fb52f | 9 | always-y += $(always) |
59721d4e MY |
10 | endif |
11 | ifneq ($(hostprogs-y),) | |
12 | $(warning 'hostprogs-y' is deprecated. Please use 'hostprogs' instead) | |
13 | hostprogs += $(hostprogs-y) | |
14 | endif | |
15 | ifneq ($(hostprogs-m),) | |
16 | $(warning 'hostprogs-m' is deprecated. Please use 'hostprogs' instead) | |
17 | hostprogs += $(hostprogs-m) | |
18 | endif | |
f77bf014 | 19 | |
8fdc3fbb | 20 | # flags that take effect in current and sub directories |
4e13d47c MY |
21 | KBUILD_AFLAGS += $(subdir-asflags-y) |
22 | KBUILD_CFLAGS += $(subdir-ccflags-y) | |
720097d8 | 23 | |
1da177e4 LT |
24 | # Figure out what we need to build from the various variables |
25 | # =========================================================================== | |
26 | ||
27 | # When an object is listed to be built compiled-in and modular, | |
28 | # only build the compiled-in version | |
1da177e4 LT |
29 | obj-m := $(filter-out $(obj-y),$(obj-m)) |
30 | ||
31 | # Libraries are always collected in one lib file. | |
32 | # Filter out objects already built-in | |
1da177e4 LT |
33 | lib-y := $(filter-out $(obj-y), $(sort $(lib-y) $(lib-m))) |
34 | ||
0a8820e7 MY |
35 | # Subdirectories we need to descend into |
36 | subdir-ym := $(sort $(subdir-y) $(subdir-m) \ | |
37 | $(patsubst %/,%, $(filter %/, $(obj-y) $(obj-m)))) | |
38 | ||
b2c88554 MY |
39 | # Handle objects in subdirs: |
40 | # - If we encounter foo/ in $(obj-y), replace it by foo/built-in.a and | |
41 | # foo/modules.order | |
42 | # - If we encounter foo/ in $(obj-m), replace it by foo/modules.order | |
43 | # | |
44 | # Generate modules.order to determine modorder. Unfortunately, we don't have | |
45 | # information about ordering between -y and -m subdirs. Just put -y's first. | |
46 | ||
47 | ifdef need-modorder | |
48 | obj-m := $(patsubst %/,%/modules.order, $(filter %/, $(obj-y)) $(obj-m)) | |
49 | else | |
50 | obj-m := $(filter-out %/, $(obj-m)) | |
51 | endif | |
52 | ||
56d58936 | 53 | ifdef need-builtin |
f49821ee | 54 | obj-y := $(patsubst %/, %/built-in.a, $(obj-y)) |
56d58936 MY |
55 | else |
56 | obj-y := $(filter-out %/, $(obj-y)) | |
57 | endif | |
1da177e4 | 58 | |
33e84f2e MY |
59 | # If $(foo-objs), $(foo-y), $(foo-m), or $(foo-) exists, foo.o is a composite object |
60 | multi-used-y := $(sort $(foreach m,$(obj-y), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y)) $($(m:.o=-))), $(m)))) | |
61 | multi-used-m := $(sort $(foreach m,$(obj-m), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y)) $($(m:.o=-m)) $($(m:.o=-))), $(m)))) | |
1da177e4 | 62 | multi-used := $(multi-used-y) $(multi-used-m) |
1da177e4 | 63 | |
f98fe47c MY |
64 | # Replace multi-part objects by their individual parts, |
65 | # including built-in.a from subdirectories | |
33e84f2e MY |
66 | real-obj-y := $(foreach m, $(obj-y), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y)) $($(m:.o=-))),$($(m:.o=-objs)) $($(m:.o=-y)),$(m))) |
67 | real-obj-m := $(foreach m, $(obj-m), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y)) $($(m:.o=-m)) $($(m:.o=-))),$($(m:.o=-objs)) $($(m:.o=-y)) $($(m:.o=-m)),$(m))) | |
1da177e4 | 68 | |
5f2fb52f MY |
69 | always-y += $(always-m) |
70 | ||
faabed29 MY |
71 | # hostprogs-always-y += foo |
72 | # ... is a shorthand for | |
73 | # hostprogs += foo | |
74 | # always-y += foo | |
75 | hostprogs += $(hostprogs-always-y) $(hostprogs-always-m) | |
76 | always-y += $(hostprogs-always-y) $(hostprogs-always-m) | |
77 | ||
78 | # userprogs-always-y is likewise. | |
79 | userprogs += $(userprogs-always-y) $(userprogs-always-m) | |
80 | always-y += $(userprogs-always-y) $(userprogs-always-m) | |
81 | ||
7e7962dd MY |
82 | # DTB |
83 | # If CONFIG_OF_ALL_DTBS is enabled, all DT blobs are built | |
84 | extra-y += $(dtb-y) | |
85 | extra-$(CONFIG_OF_ALL_DTBS) += $(dtb-) | |
86 | ||
4f0e3a57 RH |
87 | ifneq ($(CHECK_DTBS),) |
88 | extra-y += $(patsubst %.dtb,%.dt.yaml, $(dtb-y)) | |
89 | extra-$(CONFIG_OF_ALL_DTBS) += $(patsubst %.dtb,%.dt.yaml, $(dtb-)) | |
90 | endif | |
91 | ||
1da177e4 LT |
92 | # Add subdir path |
93 | ||
94 | extra-y := $(addprefix $(obj)/,$(extra-y)) | |
5f2fb52f | 95 | always-y := $(addprefix $(obj)/,$(always-y)) |
1da177e4 | 96 | targets := $(addprefix $(obj)/,$(targets)) |
1da177e4 LT |
97 | obj-m := $(addprefix $(obj)/,$(obj-m)) |
98 | lib-y := $(addprefix $(obj)/,$(lib-y)) | |
f5f33681 MY |
99 | real-obj-y := $(addprefix $(obj)/,$(real-obj-y)) |
100 | real-obj-m := $(addprefix $(obj)/,$(real-obj-m)) | |
1da177e4 | 101 | multi-used-m := $(addprefix $(obj)/,$(multi-used-m)) |
1da177e4 | 102 | subdir-ym := $(addprefix $(obj)/,$(subdir-ym)) |
1da177e4 | 103 | |
c0152e9a | 104 | # Finds the multi-part object the current object will be linked into. |
1664a377 MY |
105 | # If the object belongs to two or more multi-part objects, list them all. |
106 | modname-multi = $(sort $(foreach m,$(multi-used),\ | |
107 | $(if $(filter $*.o, $($(m:.o=-objs)) $($(m:.o=-y)) $($(m:.o=-m))),$(m:.o=)))) | |
c0152e9a | 108 | |
1664a377 MY |
109 | __modname = $(if $(modname-multi),$(modname-multi),$(basetarget)) |
110 | ||
111 | modname = $(subst $(space),:,$(__modname)) | |
112 | modfile = $(addprefix $(obj)/,$(__modname)) | |
c0152e9a | 113 | |
54b8ae66 MY |
114 | # target with $(obj)/ and its suffix stripped |
115 | target-stem = $(basename $(patsubst $(obj)/%,%,$@)) | |
116 | ||
1da177e4 | 117 | # These flags are needed for modversions and compiling, so we define them here |
8fdc3fbb | 118 | # $(modname_flags) defines KBUILD_MODNAME as the name of the module it will |
1da177e4 | 119 | # end up in (or would, if it gets compiled in) |
7e826c44 | 120 | name-fix = $(call stringify,$(subst $(comma),_,$(subst -,_,$1))) |
b42841b7 | 121 | basename_flags = -DKBUILD_BASENAME=$(call name-fix,$(basetarget)) |
aeacb019 | 122 | modname_flags = -DKBUILD_MODNAME=$(call name-fix,$(modname)) |
1664a377 | 123 | modfile_flags = -DKBUILD_MODFILE=$(call stringify,$(modfile)) |
1da177e4 | 124 | |
15d5761a MY |
125 | _c_flags = $(filter-out $(CFLAGS_REMOVE_$(target-stem).o), \ |
126 | $(filter-out $(ccflags-remove-y), \ | |
127 | $(KBUILD_CPPFLAGS) $(KBUILD_CFLAGS) $(ccflags-y)) \ | |
128 | $(CFLAGS_$(target-stem).o)) | |
129 | _a_flags = $(filter-out $(AFLAGS_REMOVE_$(target-stem).o), \ | |
130 | $(filter-out $(asflags-remove-y), \ | |
131 | $(KBUILD_CPPFLAGS) $(KBUILD_AFLAGS) $(asflags-y)) \ | |
132 | $(AFLAGS_$(target-stem).o)) | |
54b8ae66 | 133 | _cpp_flags = $(KBUILD_CPPFLAGS) $(cppflags-y) $(CPPFLAGS_$(target-stem).lds) |
1da177e4 | 134 | |
2521f2c2 PO |
135 | # |
136 | # Enable gcov profiling flags for a file, directory or for all files depending | |
137 | # on variables GCOV_PROFILE_obj.o, GCOV_PROFILE and CONFIG_GCOV_PROFILE_ALL | |
138 | # (in this order) | |
139 | # | |
140 | ifeq ($(CONFIG_GCOV_KERNEL),y) | |
141 | _c_flags += $(if $(patsubst n%,, \ | |
142 | $(GCOV_PROFILE_$(basetarget).o)$(GCOV_PROFILE)$(CONFIG_GCOV_PROFILE_ALL)), \ | |
143 | $(CFLAGS_GCOV)) | |
144 | endif | |
145 | ||
0b24becc AR |
146 | # |
147 | # Enable address sanitizer flags for kernel except some files or directories | |
148 | # we don't want to check (depends on variables KASAN_SANITIZE_obj.o, KASAN_SANITIZE) | |
149 | # | |
150 | ifeq ($(CONFIG_KASAN),y) | |
151 | _c_flags += $(if $(patsubst n%,, \ | |
152 | $(KASAN_SANITIZE_$(basetarget).o)$(KASAN_SANITIZE)y), \ | |
0e410e15 | 153 | $(CFLAGS_KASAN), $(CFLAGS_KASAN_NOSANITIZE)) |
0b24becc AR |
154 | endif |
155 | ||
c6d30853 AR |
156 | ifeq ($(CONFIG_UBSAN),y) |
157 | _c_flags += $(if $(patsubst n%,, \ | |
158 | $(UBSAN_SANITIZE_$(basetarget).o)$(UBSAN_SANITIZE)$(CONFIG_UBSAN_SANITIZE_ALL)), \ | |
159 | $(CFLAGS_UBSAN)) | |
160 | endif | |
161 | ||
5c9a8750 DV |
162 | ifeq ($(CONFIG_KCOV),y) |
163 | _c_flags += $(if $(patsubst n%,, \ | |
a4691dea | 164 | $(KCOV_INSTRUMENT_$(basetarget).o)$(KCOV_INSTRUMENT)$(CONFIG_KCOV_INSTRUMENT_ALL)), \ |
5c9a8750 DV |
165 | $(CFLAGS_KCOV)) |
166 | endif | |
167 | ||
dfd402a4 ME |
168 | # |
169 | # Enable KCSAN flags except some files or directories we don't want to check | |
170 | # (depends on variables KCSAN_SANITIZE_obj.o, KCSAN_SANITIZE) | |
171 | # | |
172 | ifeq ($(CONFIG_KCSAN),y) | |
173 | _c_flags += $(if $(patsubst n%,, \ | |
174 | $(KCSAN_SANITIZE_$(basetarget).o)$(KCSAN_SANITIZE)y), \ | |
175 | $(CFLAGS_KCSAN)) | |
176 | endif | |
5c9a8750 | 177 | |
cdd750bf MY |
178 | # $(srctree)/$(src) for including checkin headers from generated source files |
179 | # $(objtree)/$(obj) for including generated headers from checkin source files | |
58156ba4 | 180 | ifeq ($(KBUILD_EXTMOD),) |
051f278e | 181 | ifdef building_out_of_srctree |
cdd750bf MY |
182 | _c_flags += -I $(srctree)/$(src) -I $(objtree)/$(obj) |
183 | _a_flags += -I $(srctree)/$(src) -I $(objtree)/$(obj) | |
184 | _cpp_flags += -I $(srctree)/$(src) -I $(objtree)/$(obj) | |
1da177e4 | 185 | endif |
58156ba4 | 186 | endif |
1da177e4 | 187 | |
eb27ea5c MY |
188 | part-of-module = $(if $(filter $(basename $@).o, $(real-obj-m)),y) |
189 | quiet_modtag = $(if $(part-of-module),[M], ) | |
190 | ||
191 | modkern_cflags = \ | |
192 | $(if $(part-of-module), \ | |
193 | $(KBUILD_CFLAGS_MODULE) $(CFLAGS_MODULE), \ | |
1664a377 | 194 | $(KBUILD_CFLAGS_KERNEL) $(CFLAGS_KERNEL) $(modfile_flags)) |
eb27ea5c MY |
195 | |
196 | modkern_aflags = $(if $(part-of-module), \ | |
197 | $(KBUILD_AFLAGS_MODULE) $(AFLAGS_MODULE), \ | |
198 | $(KBUILD_AFLAGS_KERNEL) $(AFLAGS_KERNEL)) | |
199 | ||
30a77297 | 200 | c_flags = -Wp,-MMD,$(depfile) $(NOSTDINC_FLAGS) $(LINUXINCLUDE) \ |
a95b37e2 | 201 | -include $(srctree)/include/linux/compiler_types.h \ |
cdd750bf | 202 | $(_c_flags) $(modkern_cflags) \ |
b42841b7 | 203 | $(basename_flags) $(modname_flags) |
1da177e4 | 204 | |
30a77297 | 205 | a_flags = -Wp,-MMD,$(depfile) $(NOSTDINC_FLAGS) $(LINUXINCLUDE) \ |
cdd750bf | 206 | $(_a_flags) $(modkern_aflags) |
1da177e4 | 207 | |
30a77297 | 208 | cpp_flags = -Wp,-MMD,$(depfile) $(NOSTDINC_FLAGS) $(LINUXINCLUDE) \ |
cdd750bf | 209 | $(_cpp_flags) |
1da177e4 | 210 | |
d503ac53 | 211 | ld_flags = $(KBUILD_LDFLAGS) $(ldflags-y) $(LDFLAGS_$(@F)) |
1da177e4 | 212 | |
50f9ddaf MY |
213 | DTC_INCLUDE := $(srctree)/scripts/dtc/include-prefixes |
214 | ||
30a77297 | 215 | dtc_cpp_flags = -Wp,-MMD,$(depfile).pre.tmp -nostdinc \ |
50f9ddaf | 216 | $(addprefix -I,$(DTC_INCLUDE)) \ |
e570d7c1 SW |
217 | -undef -D__DTS__ |
218 | ||
c8589d1e MY |
219 | # Useful for describing the dependency of composite objects |
220 | # Usage: | |
221 | # $(call multi_depend, multi_used_targets, suffix_to_remove, suffix_to_add) | |
222 | define multi_depend | |
223 | $(foreach m, $(notdir $1), \ | |
224 | $(eval $(obj)/$m: \ | |
225 | $(addprefix $(obj)/, $(foreach s, $3, $($(m:%$(strip $2)=%$(s))))))) | |
226 | endef | |
227 | ||
dee9c0b5 MY |
228 | quiet_cmd_copy = COPY $@ |
229 | cmd_copy = cp $< $@ | |
230 | ||
1da177e4 LT |
231 | # Shipped files |
232 | # =========================================================================== | |
233 | ||
234 | quiet_cmd_shipped = SHIPPED $@ | |
235 | cmd_shipped = cat $< > $@ | |
236 | ||
991d76c9 | 237 | $(obj)/%: $(src)/%_shipped |
1da177e4 LT |
238 | $(call cmd,shipped) |
239 | ||
240 | # Commands useful for building a boot image | |
241 | # =========================================================================== | |
38385f8f | 242 | # |
1da177e4 LT |
243 | # Use as following: |
244 | # | |
245 | # target: source(s) FORCE | |
246 | # $(if_changed,ld/objcopy/gzip) | |
247 | # | |
836caba7 | 248 | # and add target to extra-y so that we know we have to |
1da177e4 LT |
249 | # read in the saved command line |
250 | ||
251 | # Linking | |
252 | # --------------------------------------------------------------------------- | |
253 | ||
254 | quiet_cmd_ld = LD $@ | |
afa974b7 | 255 | cmd_ld = $(LD) $(ld_flags) $(real-prereqs) -o $@ |
1da177e4 | 256 | |
898f5a00 MY |
257 | # Archive |
258 | # --------------------------------------------------------------------------- | |
259 | ||
260 | quiet_cmd_ar = AR $@ | |
13dc8c02 | 261 | cmd_ar = rm -f $@; $(AR) cDPrsT $@ $(real-prereqs) |
898f5a00 | 262 | |
1da177e4 LT |
263 | # Objcopy |
264 | # --------------------------------------------------------------------------- | |
265 | ||
266 | quiet_cmd_objcopy = OBJCOPY $@ | |
267 | cmd_objcopy = $(OBJCOPY) $(OBJCOPYFLAGS) $(OBJCOPYFLAGS_$(@F)) $< $@ | |
268 | ||
269 | # Gzip | |
270 | # --------------------------------------------------------------------------- | |
271 | ||
272 | quiet_cmd_gzip = GZIP $@ | |
e4a42c82 | 273 | cmd_gzip = cat $(real-prereqs) | $(KGZIP) -n -f -9 > $@ |
1da177e4 | 274 | |
aab94339 DB |
275 | # DTC |
276 | # --------------------------------------------------------------------------- | |
6b22b3d1 | 277 | DTC ?= $(objtree)/scripts/dtc/dtc |
3eb619b2 | 278 | DTC_FLAGS += -Wno-interrupt_provider |
aab94339 | 279 | |
bc553986 | 280 | # Disable noisy checks by default |
e27128db | 281 | ifeq ($(findstring 1,$(KBUILD_EXTRA_WARN)),) |
8654cb8d | 282 | DTC_FLAGS += -Wno-unit_address_vs_reg \ |
8654cb8d | 283 | -Wno-unit_address_format \ |
4fd98e37 RH |
284 | -Wno-avoid_unnecessary_addr_size \ |
285 | -Wno-alias_paths \ | |
74656b68 | 286 | -Wno-graph_child_address \ |
70523a3c | 287 | -Wno-simple_bus_reg \ |
74656b68 | 288 | -Wno-unique_unit_address \ |
8654cb8d | 289 | -Wno-pci_device_reg |
bc553986 RH |
290 | endif |
291 | ||
e27128db | 292 | ifneq ($(findstring 2,$(KBUILD_EXTRA_WARN)),) |
8654cb8d | 293 | DTC_FLAGS += -Wnode_name_chars_strict \ |
3eb619b2 RH |
294 | -Wproperty_name_chars_strict \ |
295 | -Winterrupt_provider | |
bc553986 RH |
296 | endif |
297 | ||
331f7416 FR |
298 | DTC_FLAGS += $(DTC_FLAGS_$(basetarget)) |
299 | ||
aab94339 | 300 | # Generate an assembly file to wrap the output of the device tree compiler |
1c00a47e | 301 | quiet_cmd_dt_S_dtb= DTB $@ |
aab94339 | 302 | cmd_dt_S_dtb= \ |
b79c6aa6 | 303 | { \ |
aab94339 DB |
304 | echo '\#include <asm-generic/vmlinux.lds.h>'; \ |
305 | echo '.section .dtb.init.rodata,"a"'; \ | |
306 | echo '.balign STRUCT_ALIGNMENT'; \ | |
55fe6da9 JH |
307 | echo '.global __dtb_$(subst -,_,$(*F))_begin'; \ |
308 | echo '__dtb_$(subst -,_,$(*F))_begin:'; \ | |
aab94339 | 309 | echo '.incbin "$<" '; \ |
55fe6da9 JH |
310 | echo '__dtb_$(subst -,_,$(*F))_end:'; \ |
311 | echo '.global __dtb_$(subst -,_,$(*F))_end'; \ | |
aab94339 | 312 | echo '.balign STRUCT_ALIGNMENT'; \ |
b79c6aa6 | 313 | } > $@ |
aab94339 | 314 | |
a7f92419 MY |
315 | $(obj)/%.dtb.S: $(obj)/%.dtb FORCE |
316 | $(call if_changed,dt_S_dtb) | |
aab94339 DB |
317 | |
318 | quiet_cmd_dtc = DTC $@ | |
dd7699e3 | 319 | cmd_dtc = $(HOSTCC) -E $(dtc_cpp_flags) -x assembler-with-cpp -o $(dtc-tmp) $< ; \ |
78046fab | 320 | $(DTC) -O $(patsubst .%,%,$(suffix $@)) -o $@ -b 0 \ |
50f9ddaf | 321 | $(addprefix -i,$(dir $<) $(DTC_INCLUDE)) $(DTC_FLAGS) \ |
b0a4d8b3 IC |
322 | -d $(depfile).dtc.tmp $(dtc-tmp) ; \ |
323 | cat $(depfile).pre.tmp $(depfile).dtc.tmp > $(depfile) | |
1da177e4 | 324 | |
b8fc5b21 | 325 | $(obj)/%.dtb: $(src)/%.dts $(DTC) FORCE |
78046fab | 326 | $(call if_changed_dep,dtc) |
4f0e3a57 RH |
327 | |
328 | DT_CHECKER ?= dt-validate | |
329 | DT_BINDING_DIR := Documentation/devicetree/bindings | |
2ba06cd8 | 330 | # DT_TMP_SCHEMA may be overridden from Documentation/devicetree/bindings/Makefile |
b8a49399 | 331 | DT_TMP_SCHEMA ?= $(objtree)/$(DT_BINDING_DIR)/processed-schema.json |
4f0e3a57 RH |
332 | |
333 | quiet_cmd_dtb_check = CHECK $@ | |
fd63fab4 | 334 | cmd_dtb_check = $(DT_CHECKER) -u $(srctree)/$(DT_BINDING_DIR) -p $(DT_TMP_SCHEMA) $@ |
4f0e3a57 | 335 | |
7a049605 | 336 | define rule_dtc |
78046fab | 337 | $(call cmd_and_fixdep,dtc) |
f5688663 | 338 | $(call cmd,dtb_check) |
4f0e3a57 RH |
339 | endef |
340 | ||
341 | $(obj)/%.dt.yaml: $(src)/%.dts $(DTC) $(DT_TMP_SCHEMA) FORCE | |
3d4b2238 | 342 | $(call if_changed_rule,dtc,yaml) |
90b335fb | 343 | |
b0a4d8b3 | 344 | dtc-tmp = $(subst $(comma),_,$(dot-target).dts.tmp) |
22435f38 | 345 | |
bc22c17e AK |
346 | # Bzip2 |
347 | # --------------------------------------------------------------------------- | |
348 | ||
d3dd3b5a PA |
349 | # Bzip2 and LZMA do not include size in file... so we have to fake that; |
350 | # append the size as a 32-bit littleendian number as gzip does. | |
4a2ff67c | 351 | size_append = printf $(shell \ |
d3dd3b5a | 352 | dec_size=0; \ |
afa974b7 | 353 | for F in $(real-prereqs); do \ |
a670b0b4 | 354 | fsize=$$($(CONFIG_SHELL) $(srctree)/scripts/file-size.sh $$F); \ |
d3dd3b5a PA |
355 | dec_size=$$(expr $$dec_size + $$fsize); \ |
356 | done; \ | |
1373411a JN |
357 | printf "%08x\n" $$dec_size | \ |
358 | sed 's/\(..\)/\1 /g' | { \ | |
359 | read ch0 ch1 ch2 ch3; \ | |
360 | for ch in $$ch3 $$ch2 $$ch1 $$ch0; do \ | |
361 | printf '%s%03o' '\\' $$((0x$$ch)); \ | |
362 | done; \ | |
363 | } \ | |
d3dd3b5a PA |
364 | ) |
365 | ||
366 | quiet_cmd_bzip2 = BZIP2 $@ | |
e4a42c82 | 367 | cmd_bzip2 = { cat $(real-prereqs) | $(KBZIP2) -9; $(size_append); } > $@ |
bc22c17e AK |
368 | |
369 | # Lzma | |
370 | # --------------------------------------------------------------------------- | |
371 | ||
372 | quiet_cmd_lzma = LZMA $@ | |
8dfb61dc | 373 | cmd_lzma = { cat $(real-prereqs) | $(LZMA) -9; $(size_append); } > $@ |
7dd65feb | 374 | |
2d74b2c6 | 375 | quiet_cmd_lzo = LZO $@ |
e4a42c82 | 376 | cmd_lzo = { cat $(real-prereqs) | $(KLZOP) -9; $(size_append); } > $@ |
d61931d8 | 377 | |
e76e1fdf | 378 | quiet_cmd_lz4 = LZ4 $@ |
8dfb61dc | 379 | cmd_lz4 = { cat $(real-prereqs) | $(LZ4) -l -c1 stdin stdout; \ |
b79c6aa6 | 380 | $(size_append); } > $@ |
e76e1fdf | 381 | |
e3393645 SW |
382 | # U-Boot mkimage |
383 | # --------------------------------------------------------------------------- | |
384 | ||
385 | MKIMAGE := $(srctree)/scripts/mkuboot.sh | |
386 | ||
387 | # SRCARCH just happens to match slightly more than ARCH (on sparc), so reduces | |
388 | # the number of overrides in arch makefiles | |
389 | UIMAGE_ARCH ?= $(SRCARCH) | |
390 | UIMAGE_COMPRESSION ?= $(if $(2),$(2),none) | |
391 | UIMAGE_OPTS-y ?= | |
392 | UIMAGE_TYPE ?= kernel | |
393 | UIMAGE_LOADADDR ?= arch_must_set_this | |
394 | UIMAGE_ENTRYADDR ?= $(UIMAGE_LOADADDR) | |
395 | UIMAGE_NAME ?= 'Linux-$(KERNELRELEASE)' | |
e3393645 | 396 | |
786ac51a | 397 | quiet_cmd_uimage = UIMAGE $@ |
858805b3 | 398 | cmd_uimage = $(BASH) $(MKIMAGE) -A $(UIMAGE_ARCH) -O linux \ |
e3393645 SW |
399 | -C $(UIMAGE_COMPRESSION) $(UIMAGE_OPTS-y) \ |
400 | -T $(UIMAGE_TYPE) \ | |
401 | -a $(UIMAGE_LOADADDR) -e $(UIMAGE_ENTRYADDR) \ | |
786ac51a | 402 | -n $(UIMAGE_NAME) -d $< $@ |
e3393645 | 403 | |
24fa0402 LC |
404 | # XZ |
405 | # --------------------------------------------------------------------------- | |
406 | # Use xzkern to compress the kernel image and xzmisc to compress other things. | |
407 | # | |
408 | # xzkern uses a big LZMA2 dictionary since it doesn't increase memory usage | |
409 | # of the kernel decompressor. A BCJ filter is used if it is available for | |
410 | # the target architecture. xzkern also appends uncompressed size of the data | |
411 | # using size_append. The .xz format has the size information available at | |
412 | # the end of the file too, but it's in more complex format and it's good to | |
413 | # avoid changing the part of the boot code that reads the uncompressed size. | |
414 | # Note that the bytes added by size_append will make the xz tool think that | |
415 | # the file is corrupt. This is expected. | |
416 | # | |
417 | # xzmisc doesn't use size_append, so it can be used to create normal .xz | |
418 | # files. xzmisc uses smaller LZMA2 dictionary than xzkern, because a very | |
419 | # big dictionary would increase the memory usage too much in the multi-call | |
420 | # decompression mode. A BCJ filter isn't used either. | |
421 | quiet_cmd_xzkern = XZKERN $@ | |
b956c7a6 | 422 | cmd_xzkern = { cat $(real-prereqs) | sh $(srctree)/scripts/xz_wrap.sh; \ |
b79c6aa6 | 423 | $(size_append); } > $@ |
24fa0402 LC |
424 | |
425 | quiet_cmd_xzmisc = XZMISC $@ | |
8dfb61dc | 426 | cmd_xzmisc = cat $(real-prereqs) | $(XZ) --check=crc32 --lzma2=dict=1MiB > $@ |
ebf003f0 | 427 | |
48f7ddf7 NT |
428 | # ZSTD |
429 | # --------------------------------------------------------------------------- | |
430 | # Appends the uncompressed size of the data using size_append. The .zst | |
431 | # format has the size information available at the beginning of the file too, | |
432 | # but it's in a more complex format and it's good to avoid changing the part | |
433 | # of the boot code that reads the uncompressed size. | |
434 | # | |
435 | # Note that the bytes added by size_append will make the zstd tool think that | |
436 | # the file is corrupt. This is expected. | |
437 | # | |
438 | # zstd uses a maximum window size of 8 MB. zstd22 uses a maximum window size of | |
439 | # 128 MB. zstd22 is used for kernel compression because it is decompressed in a | |
440 | # single pass, so zstd doesn't need to allocate a window buffer. When streaming | |
441 | # decompression is used, like initramfs decompression, zstd22 should likely not | |
442 | # be used because it would require zstd to allocate a 128 MB buffer. | |
443 | ||
444 | quiet_cmd_zstd = ZSTD $@ | |
445 | cmd_zstd = { cat $(real-prereqs) | $(ZSTD) -19; $(size_append); } > $@ | |
446 | ||
447 | quiet_cmd_zstd22 = ZSTD22 $@ | |
448 | cmd_zstd22 = { cat $(real-prereqs) | $(ZSTD) -22 --ultra; $(size_append); } > $@ | |
449 | ||
ebf003f0 MK |
450 | # ASM offsets |
451 | # --------------------------------------------------------------------------- | |
452 | ||
453 | # Default sed regexp - multiline due to syntax constraints | |
cf0c3e68 JH |
454 | # |
455 | # Use [:space:] because LLVM's integrated assembler inserts <tab> around | |
456 | # the .ascii directive whereas GCC keeps the <space> as-is. | |
ebf003f0 | 457 | define sed-offsets |
cf0c3e68 JH |
458 | 's:^[[:space:]]*\.ascii[[:space:]]*"\(.*\)".*:\1:; \ |
459 | /^->/{s:->#\(.*\):/* \1 */:; \ | |
ebf003f0 | 460 | s:^->\([^ ]*\) [\$$#]*\([^ ]*\) \(.*\):#define \1 \2 /* \3 */:; \ |
cf0c3e68 | 461 | s:->::; p;}' |
ebf003f0 MK |
462 | endef |
463 | ||
464 | # Use filechk to avoid rebuilds when a header changes, but the resulting file | |
465 | # does not | |
466 | define filechk_offsets | |
ebf003f0 MK |
467 | echo "#ifndef $2"; \ |
468 | echo "#define $2"; \ | |
469 | echo "/*"; \ | |
470 | echo " * DO NOT MODIFY."; \ | |
471 | echo " *"; \ | |
472 | echo " * This file was generated by Kbuild"; \ | |
473 | echo " */"; \ | |
474 | echo ""; \ | |
43fee2b2 | 475 | sed -ne $(sed-offsets) < $<; \ |
ebf003f0 | 476 | echo ""; \ |
ad774086 | 477 | echo "#endif" |
ebf003f0 | 478 | endef |