arm: provide a PCS-compliant setjmp implementation
[oweals/u-boot.git] / scripts / Makefile.lib
1 #
2 # SPDX-License-Identifier:      GPL-2.0
3 #
4 # Backward compatibility
5 asflags-y  += $(EXTRA_AFLAGS)
6 ccflags-y  += $(EXTRA_CFLAGS)
7 cppflags-y += $(EXTRA_CPPFLAGS)
8 ldflags-y  += $(EXTRA_LDFLAGS)
9
10 #
11 # flags that take effect in sub directories
12 export KBUILD_SUBDIR_ASFLAGS := $(KBUILD_SUBDIR_ASFLAGS) $(subdir-asflags-y)
13 export KBUILD_SUBDIR_CCFLAGS := $(KBUILD_SUBDIR_CCFLAGS) $(subdir-ccflags-y)
14
15 # Figure out what we need to build from the various variables
16 # ===========================================================================
17
18 # When an object is listed to be built compiled-in and modular,
19 # only build the compiled-in version
20
21 obj-m := $(filter-out $(obj-y),$(obj-m))
22
23 # Libraries are always collected in one lib file.
24 # Filter out objects already built-in
25
26 lib-y := $(filter-out $(obj-y), $(sort $(lib-y) $(lib-m)))
27
28
29 # Handle objects in subdirs
30 # ---------------------------------------------------------------------------
31 # o if we encounter foo/ in $(obj-y), replace it by foo/built-in.o
32 #   and add the directory to the list of dirs to descend into: $(subdir-y)
33 # o if we encounter foo/ in $(obj-m), remove it from $(obj-m)
34 #   and add the directory to the list of dirs to descend into: $(subdir-m)
35
36 # Determine modorder.
37 # Unfortunately, we don't have information about ordering between -y
38 # and -m subdirs.  Just put -y's first.
39 modorder        := $(patsubst %/,%/modules.order, $(filter %/, $(obj-y)) $(obj-m:.o=.ko))
40
41 __subdir-y      := $(patsubst %/,%,$(filter %/, $(obj-y)))
42 subdir-y        += $(__subdir-y)
43 __subdir-m      := $(patsubst %/,%,$(filter %/, $(obj-m)))
44 subdir-m        += $(__subdir-m)
45 obj-y           := $(patsubst %/, %/built-in.o, $(obj-y))
46 obj-m           := $(filter-out %/, $(obj-m))
47
48 # Subdirectories we need to descend into
49
50 subdir-ym       := $(sort $(subdir-y) $(subdir-m))
51
52 # if $(foo-objs) exists, foo.o is a composite object
53 multi-used-y := $(sort $(foreach m,$(obj-y), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y))), $(m))))
54 multi-used-m := $(sort $(foreach m,$(obj-m), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y))), $(m))))
55 multi-used   := $(multi-used-y) $(multi-used-m)
56 single-used-m := $(sort $(filter-out $(multi-used-m),$(obj-m)))
57
58 # Build list of the parts of our composite objects, our composite
59 # objects depend on those (obviously)
60 multi-objs-y := $(foreach m, $(multi-used-y), $($(m:.o=-objs)) $($(m:.o=-y)))
61 multi-objs-m := $(foreach m, $(multi-used-m), $($(m:.o=-objs)) $($(m:.o=-y)))
62 multi-objs   := $(multi-objs-y) $(multi-objs-m)
63
64 # $(subdir-obj-y) is the list of objects in $(obj-y) which uses dir/ to
65 # tell kbuild to descend
66 subdir-obj-y := $(filter %/built-in.o, $(obj-y))
67
68 # $(obj-dirs) is a list of directories that contain object files
69 obj-dirs := $(dir $(multi-objs) $(obj-y))
70
71 # Replace multi-part objects by their individual parts, look at local dir only
72 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)
73 real-objs-m := $(foreach m, $(obj-m), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y))),$($(m:.o=-objs)) $($(m:.o=-y)),$(m)))
74
75 # Add subdir path
76
77 extra-y         := $(addprefix $(obj)/,$(extra-y))
78 always          := $(addprefix $(obj)/,$(always))
79 targets         := $(addprefix $(obj)/,$(targets))
80 modorder        := $(addprefix $(obj)/,$(modorder))
81 obj-y           := $(addprefix $(obj)/,$(obj-y))
82 obj-m           := $(addprefix $(obj)/,$(obj-m))
83 lib-y           := $(addprefix $(obj)/,$(lib-y))
84 subdir-obj-y    := $(addprefix $(obj)/,$(subdir-obj-y))
85 real-objs-y     := $(addprefix $(obj)/,$(real-objs-y))
86 real-objs-m     := $(addprefix $(obj)/,$(real-objs-m))
87 single-used-m   := $(addprefix $(obj)/,$(single-used-m))
88 multi-used-y    := $(addprefix $(obj)/,$(multi-used-y))
89 multi-used-m    := $(addprefix $(obj)/,$(multi-used-m))
90 multi-objs-y    := $(addprefix $(obj)/,$(multi-objs-y))
91 multi-objs-m    := $(addprefix $(obj)/,$(multi-objs-m))
92 subdir-ym       := $(addprefix $(obj)/,$(subdir-ym))
93 obj-dirs        := $(addprefix $(obj)/,$(obj-dirs))
94
95 # These flags are needed for modversions and compiling, so we define them here
96 # already
97 # $(modname_flags) #defines KBUILD_MODNAME as the name of the module it will
98 # end up in (or would, if it gets compiled in)
99 # Note: Files that end up in two or more modules are compiled without the
100 #       KBUILD_MODNAME definition. The reason is that any made-up name would
101 #       differ in different configs.
102 name-fix = $(subst $(comma),_,$(subst -,_,$1))
103 basename_flags = -D"KBUILD_BASENAME=KBUILD_STR($(call name-fix,$(basetarget)))"
104 modname_flags  = $(if $(filter 1,$(words $(modname))),\
105                  -D"KBUILD_MODNAME=KBUILD_STR($(call name-fix,$(modname)))")
106
107 orig_c_flags   = $(KBUILD_CPPFLAGS) $(KBUILD_CFLAGS) $(KBUILD_SUBDIR_CCFLAGS) \
108                  $(ccflags-y) $(CFLAGS_$(basetarget).o)
109 _c_flags       = $(filter-out $(CFLAGS_REMOVE_$(basetarget).o), $(orig_c_flags))
110 orig_a_flags   = $(KBUILD_CPPFLAGS) $(KBUILD_AFLAGS) $(KBUILD_SUBDIR_ASFLAGS) \
111                  $(asflags-y) $(AFLAGS_$(basetarget).o)
112 _a_flags       = $(filter-out $(AFLAGS_REMOVE_$(basetarget).o), $(orig_a_flags))
113 _cpp_flags     = $(KBUILD_CPPFLAGS) $(cppflags-y) $(CPPFLAGS_$(@F))
114
115 #
116 # Enable gcov profiling flags for a file, directory or for all files depending
117 # on variables GCOV_PROFILE_obj.o, GCOV_PROFILE and CONFIG_GCOV_PROFILE_ALL
118 # (in this order)
119 #
120 ifeq ($(CONFIG_GCOV_KERNEL),y)
121 _c_flags += $(if $(patsubst n%,, \
122                 $(GCOV_PROFILE_$(basetarget).o)$(GCOV_PROFILE)$(CONFIG_GCOV_PROFILE_ALL)), \
123                 $(CFLAGS_GCOV))
124 endif
125
126 #
127 # Enable address sanitizer flags for kernel except some files or directories
128 # we don't want to check (depends on variables KASAN_SANITIZE_obj.o, KASAN_SANITIZE)
129 #
130 ifeq ($(CONFIG_KASAN),y)
131 _c_flags += $(if $(patsubst n%,, \
132                 $(KASAN_SANITIZE_$(basetarget).o)$(KASAN_SANITIZE)y), \
133                 $(CFLAGS_KASAN))
134 endif
135
136 # If building the kernel in a separate objtree expand all occurrences
137 # of -Idir to -I$(srctree)/dir except for absolute paths (starting with '/').
138
139 ifeq ($(KBUILD_SRC),)
140 __c_flags       = $(_c_flags)
141 __a_flags       = $(_a_flags)
142 __cpp_flags     = $(_cpp_flags)
143 else
144
145 # -I$(obj) locates generated .h files
146 # $(call addtree,-I$(obj)) locates .h files in srctree, from generated .c files
147 #   and locates generated .h files
148 # FIXME: Replace both with specific CFLAGS* statements in the makefiles
149 __c_flags       = $(call addtree,-I$(obj)) $(call flags,_c_flags)
150 __a_flags       =                          $(call flags,_a_flags)
151 __cpp_flags     =                          $(call flags,_cpp_flags)
152 endif
153
154 # Modified for U-Boot: LINUXINCLUDE -> UBOOTINCLUDE
155 c_flags        = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(UBOOTINCLUDE)     \
156                  $(__c_flags) $(modkern_cflags)                           \
157                  -D"KBUILD_STR(s)=\#s" $(basename_flags) $(modname_flags)
158
159 a_flags        = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(UBOOTINCLUDE)     \
160                  $(__a_flags) $(modkern_aflags)
161
162 cpp_flags      = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(UBOOTINCLUDE)     \
163                  $(__cpp_flags)
164
165 ld_flags       = $(LDFLAGS) $(ldflags-y)
166
167 # Try these files in order to find the U-Boot-specific .dtsi include file
168 u_boot_dtsi_options = $(wildcard $(dir $<)$(basename $(notdir $<))-u-boot.dtsi) \
169         $(wildcard $(dir $<)$(subst $\",,$(CONFIG_SYS_SOC))-u-boot.dtsi) \
170         $(wildcard $(dir $<)$(subst $\",,$(CONFIG_SYS_CPU))-u-boot.dtsi) \
171         $(wildcard $(dir $<)$(subst $\",,$(CONFIG_SYS_VENDOR))-u-boot.dtsi) \
172         $(wildcard $(dir $<)u-boot.dtsi)
173
174 # Uncomment for debugging
175 # $(warning u_boot_dtsi_options: $(u_boot_dtsi_options))
176
177 # We use the first match
178 u_boot_dtsi = $(notdir $(firstword $(u_boot_dtsi_options)))
179
180 # Modified for U-Boot
181 dtc_cpp_flags  = -Wp,-MD,$(depfile).pre.tmp -nostdinc                    \
182                  -I$(srctree)/arch/$(ARCH)/dts                           \
183                  -I$(srctree)/arch/$(ARCH)/dts/include                   \
184                  -Iinclude                                               \
185                  -I$(srctree)/include                                    \
186                  -I$(srctree)/arch/$(ARCH)/include                       \
187                  -include $(srctree)/include/linux/kconfig.h             \
188                  -D__ASSEMBLY__                                          \
189                  -undef -D__DTS__
190
191 # Finds the multi-part object the current object will be linked into
192 modname-multi = $(sort $(foreach m,$(multi-used),\
193                 $(if $(filter $(subst $(obj)/,,$*.o), $($(m:.o=-objs)) $($(m:.o=-y))),$(m:.o=))))
194
195 # Useful for describing the dependency of composite objects
196 # Usage:
197 #   $(call multi_depend, multi_used_targets, suffix_to_remove, suffix_to_add)
198 define multi_depend
199 $(foreach m, $(notdir $1), \
200         $(eval $(obj)/$m: \
201         $(addprefix $(obj)/, $(foreach s, $3, $($(m:%$(strip $2)=%$(s)))))))
202 endef
203
204 ifdef REGENERATE_PARSERS
205
206 # GPERF
207 # ---------------------------------------------------------------------------
208 quiet_cmd_gperf = GPERF $@
209       cmd_gperf = gperf -t --output-file $@ -a -C -E -g -k 1,3,$$ -p -t $<
210
211 .PRECIOUS: $(src)/%.hash.c_shipped
212 $(src)/%.hash.c_shipped: $(src)/%.gperf
213         $(call cmd,gperf)
214
215 # LEX
216 # ---------------------------------------------------------------------------
217 LEX_PREFIX = $(if $(LEX_PREFIX_${baseprereq}),$(LEX_PREFIX_${baseprereq}),yy)
218
219 quiet_cmd_flex = LEX     $@
220       cmd_flex = flex -o$@ -L -P $(LEX_PREFIX) $<
221
222 .PRECIOUS: $(src)/%.lex.c_shipped
223 $(src)/%.lex.c_shipped: $(src)/%.l
224         $(call cmd,flex)
225
226 # YACC
227 # ---------------------------------------------------------------------------
228 YACC_PREFIX = $(if $(YACC_PREFIX_${baseprereq}),$(YACC_PREFIX_${baseprereq}),yy)
229
230 quiet_cmd_bison = YACC    $@
231       cmd_bison = bison -o$@ -t -l -p $(YACC_PREFIX) $<
232
233 .PRECIOUS: $(src)/%.tab.c_shipped
234 $(src)/%.tab.c_shipped: $(src)/%.y
235         $(call cmd,bison)
236
237 quiet_cmd_bison_h = YACC    $@
238       cmd_bison_h = bison -o/dev/null --defines=$@ -t -l -p $(YACC_PREFIX) $<
239
240 .PRECIOUS: $(src)/%.tab.h_shipped
241 $(src)/%.tab.h_shipped: $(src)/%.y
242         $(call cmd,bison_h)
243
244 endif
245
246 # Shipped files
247 # ===========================================================================
248
249 quiet_cmd_shipped = SHIPPED $@
250 cmd_shipped = cat $< > $@
251
252 $(obj)/%: $(src)/%_shipped
253         $(call cmd,shipped)
254
255 # Commands useful for building a boot image
256 # ===========================================================================
257 #
258 #       Use as following:
259 #
260 #       target: source(s) FORCE
261 #               $(if_changed,ld/objcopy/gzip)
262 #
263 #       and add target to extra-y so that we know we have to
264 #       read in the saved command line
265
266 # Linking
267 # ---------------------------------------------------------------------------
268
269 quiet_cmd_ld = LD      $@
270 cmd_ld = $(LD) $(LDFLAGS) $(ldflags-y) $(LDFLAGS_$(@F)) \
271                $(filter-out FORCE,$^) -o $@
272
273 # Objcopy
274 # ---------------------------------------------------------------------------
275
276 quiet_cmd_objcopy = OBJCOPY $@
277 cmd_objcopy = $(OBJCOPY) $(OBJCOPYFLAGS) $(OBJCOPYFLAGS_$(@F)) $< $@
278
279 # Gzip
280 # ---------------------------------------------------------------------------
281
282 quiet_cmd_gzip = GZIP    $@
283 cmd_gzip = (cat $(filter-out FORCE,$^) | gzip -n -f -9 > $@) || \
284         (rm -f $@ ; false)
285
286 # DTC
287 # ---------------------------------------------------------------------------
288
289 # Generate an assembly file to wrap the output of the device tree compiler
290 quiet_cmd_dt_S_dtb= DTB     $@
291 # Modified for U-Boot
292 cmd_dt_S_dtb=                                           \
293 (                                                       \
294         echo '.section .dtb.init.rodata,"a"';           \
295         echo '.balign 16';                              \
296         echo '.global __dtb_$(subst -,_,$(*F))_begin';  \
297         echo '__dtb_$(subst -,_,$(*F))_begin:';         \
298         echo '.incbin "$<" ';                           \
299         echo '__dtb_$(subst -,_,$(*F))_end:';           \
300         echo '.global __dtb_$(subst -,_,$(*F))_end';    \
301         echo '.balign 16';                              \
302 ) > $@
303
304 $(obj)/%.dtb.S: $(obj)/%.dtb
305         $(call cmd,dt_S_dtb)
306
307 quiet_cmd_dtc = DTC     $@
308 # Modified for U-Boot
309 # Bring in any U-Boot-specific include at the end of the file
310 cmd_dtc = mkdir -p $(dir ${dtc-tmp}) ; \
311         (cat $<; $(if $(u_boot_dtsi),echo '\#include "$(u_boot_dtsi)"')) > $(pre-tmp); \
312         $(CPP) $(dtc_cpp_flags) -x assembler-with-cpp -o $(dtc-tmp) $(pre-tmp) ; \
313         $(DTC) -O dtb -o $@ -b 0 \
314                 -i $(dir $<) $(DTC_FLAGS) \
315                 -d $(depfile).dtc.tmp $(dtc-tmp) ; \
316         cat $(depfile).pre.tmp $(depfile).dtc.tmp > $(depfile)
317
318 $(obj)/%.dtb: $(src)/%.dts FORCE
319         $(call if_changed_dep,dtc)
320
321 pre-tmp = $(subst $(comma),_,$(dot-target).pre.tmp)
322 dtc-tmp = $(subst $(comma),_,$(dot-target).dts.tmp)
323
324 # DTCO
325 # ---------------------------------------------------------------------------
326
327 quiet_cmd_dtco = DTCO    $@
328 # Rule for objects only; does not put specific u-boot include at the end
329 # No generation of assembly file either
330 # Modified for U-Boot
331 cmd_dtco = mkdir -p $(dir ${dtc-tmp}) ; \
332         $(CPP) $(dtc_cpp_flags) -x assembler-with-cpp -o $(dtc-tmp) - ; \
333         $(DTC) -@ -O dtb -o $@ -b 0 \
334                 -i $(dir $<) $(DTC_FLAGS) \
335                 -d $(depfile).dtc.tmp $(dtc-tmp) ; \
336         cat $(depfile).pre.tmp $(depfile).dtc.tmp > $(depfile)
337
338 $(obj)/%.dtbo: $(src)/%.dts FORCE
339         $(call if_changed_dep,dtco)
340
341 # Fonts
342 # ---------------------------------------------------------------------------
343
344 # Generate an assembly file to wrap the font data
345 quiet_cmd_S_ttf= TTF     $@
346 # Modified for U-Boot
347 cmd_S_ttf=                                              \
348 (                                                       \
349         echo '.section .rodata.ttf.init,"a"';           \
350         echo '.balign 16';                              \
351         echo '.global __ttf_$(*F)_begin';               \
352         echo '__ttf_$(*F)_begin:';                      \
353         echo '.incbin "$<" ';                           \
354         echo '__ttf_$(*F)_end:';                        \
355         echo '.global __ttf_$(*F)_end';                 \
356         echo '.balign 16';                              \
357 ) > $@
358
359 $(obj)/%.S: $(src)/%.ttf
360         $(call cmd,S_ttf)
361
362 # EFI applications
363 # A Makefile target *.efi is built as EFI application.
364 # A Makefile target *_efi.S wraps *.efi as built-in EFI application.
365 # ---------------------------------------------------------------------------
366
367 # Generate an assembly file to wrap the EFI app
368 cmd_S_efi=                                      \
369 (                                               \
370         echo '.section .rodata.$*.init,"a"';    \
371         echo '.balign 16';                      \
372         echo '.global __efi_$*_begin';          \
373         echo '__efi_$*_begin:';                 \
374         echo '.incbin "$<" ';                   \
375         echo '__efi_$*_end:';                   \
376         echo '.global __efi_$*_end';            \
377         echo '.balign 16';                      \
378 ) > $@
379
380 $(obj)/%_efi.S: $(obj)/%.efi
381         $(call cmd,S_efi)
382
383 quiet_cmd_efi_objcopy = OBJCOPY $@
384 cmd_efi_objcopy = $(OBJCOPY) -j .header -j .text -j .sdata -j .data -j \
385                 .dynamic -j .dynsym  -j .rel* -j .rela* -j .reloc \
386                 $(if $(EFI_TARGET),$(EFI_TARGET),-O binary) $^ $@
387
388 $(obj)/%.efi: $(obj)/%_efi.so
389         $(call cmd,efi_objcopy)
390
391 quiet_cmd_efi_ld = LD      $@
392 cmd_efi_ld = $(LD) -nostdlib -znocombreloc -T $(EFI_LDS_PATH) -shared \
393                 -Bsymbolic $^ -o $@
394
395 EFI_LDS_PATH = $(srctree)/arch/$(ARCH)/lib/$(EFI_LDS)
396
397 $(obj)/%_efi.so: $(obj)/%.o arch/$(ARCH)/lib/$(EFI_CRT0) \
398                 arch/$(ARCH)/lib/$(EFI_RELOC)
399         $(call cmd,efi_ld)
400
401 # ACPI
402 # ---------------------------------------------------------------------------
403 quiet_cmd_acpi_c_asl= ASL     $<
404 cmd_acpi_c_asl=         \
405         $(CPP) -x assembler-with-cpp -D__ASSEMBLY__ -P $(UBOOTINCLUDE) -o $<.tmp $<; \
406         iasl -p $< -tc $<.tmp $(if $(KBUILD_VERBOSE:1=), >/dev/null) && \
407         mv $(patsubst %.asl,%.hex,$<) $@
408
409 $(obj)/dsdt.c:    $(src)/dsdt.asl
410         $(call cmd,acpi_c_asl)
411
412 # Bzip2
413 # ---------------------------------------------------------------------------
414
415 # Bzip2 and LZMA do not include size in file... so we have to fake that;
416 # append the size as a 32-bit littleendian number as gzip does.
417 size_append = printf $(shell                                            \
418 dec_size=0;                                                             \
419 for F in $1; do                                                         \
420         fsize=$$(stat -c "%s" $$F);                                     \
421         dec_size=$$(expr $$dec_size + $$fsize);                         \
422 done;                                                                   \
423 printf "%08x\n" $$dec_size |                                            \
424         sed 's/\(..\)/\1 /g' | {                                        \
425                 read ch0 ch1 ch2 ch3;                                   \
426                 for ch in $$ch3 $$ch2 $$ch1 $$ch0; do                   \
427                         printf '%s%03o' '\\' $$((0x$$ch));              \
428                 done;                                                   \
429         }                                                               \
430 )
431
432 quiet_cmd_bzip2 = BZIP2   $@
433 cmd_bzip2 = (cat $(filter-out FORCE,$^) | \
434         bzip2 -9 && $(call size_append, $(filter-out FORCE,$^))) > $@ || \
435         (rm -f $@ ; false)
436
437 # Lzma
438 # ---------------------------------------------------------------------------
439
440 quiet_cmd_lzma = LZMA    $@
441 cmd_lzma = (cat $(filter-out FORCE,$^) | \
442         lzma -9 && $(call size_append, $(filter-out FORCE,$^))) > $@ || \
443         (rm -f $@ ; false)
444
445 quiet_cmd_lzo = LZO     $@
446 cmd_lzo = (cat $(filter-out FORCE,$^) | \
447         lzop -9 && $(call size_append, $(filter-out FORCE,$^))) > $@ || \
448         (rm -f $@ ; false)
449
450 quiet_cmd_lz4 = LZ4     $@
451 cmd_lz4 = (cat $(filter-out FORCE,$^) | \
452         lz4c -l -c1 stdin stdout && $(call size_append, $(filter-out FORCE,$^))) > $@ || \
453         (rm -f $@ ; false)
454
455 # U-Boot mkimage
456 # ---------------------------------------------------------------------------
457
458 MKIMAGE := $(srctree)/scripts/mkuboot.sh
459
460 # SRCARCH just happens to match slightly more than ARCH (on sparc), so reduces
461 # the number of overrides in arch makefiles
462 UIMAGE_ARCH ?= $(SRCARCH)
463 UIMAGE_COMPRESSION ?= $(if $(2),$(2),none)
464 UIMAGE_OPTS-y ?=
465 UIMAGE_TYPE ?= kernel
466 UIMAGE_LOADADDR ?= arch_must_set_this
467 UIMAGE_ENTRYADDR ?= $(UIMAGE_LOADADDR)
468 UIMAGE_NAME ?= 'Linux-$(KERNELRELEASE)'
469 UIMAGE_IN ?= $<
470 UIMAGE_OUT ?= $@
471
472 quiet_cmd_uimage = UIMAGE  $(UIMAGE_OUT)
473       cmd_uimage = $(CONFIG_SHELL) $(MKIMAGE) -A $(UIMAGE_ARCH) -O linux \
474                         -C $(UIMAGE_COMPRESSION) $(UIMAGE_OPTS-y) \
475                         -T $(UIMAGE_TYPE) \
476                         -a $(UIMAGE_LOADADDR) -e $(UIMAGE_ENTRYADDR) \
477                         -n $(UIMAGE_NAME) -d $(UIMAGE_IN) $(UIMAGE_OUT)
478
479 # XZ
480 # ---------------------------------------------------------------------------
481 # Use xzkern to compress the kernel image and xzmisc to compress other things.
482 #
483 # xzkern uses a big LZMA2 dictionary since it doesn't increase memory usage
484 # of the kernel decompressor. A BCJ filter is used if it is available for
485 # the target architecture. xzkern also appends uncompressed size of the data
486 # using size_append. The .xz format has the size information available at
487 # the end of the file too, but it's in more complex format and it's good to
488 # avoid changing the part of the boot code that reads the uncompressed size.
489 # Note that the bytes added by size_append will make the xz tool think that
490 # the file is corrupt. This is expected.
491 #
492 # xzmisc doesn't use size_append, so it can be used to create normal .xz
493 # files. xzmisc uses smaller LZMA2 dictionary than xzkern, because a very
494 # big dictionary would increase the memory usage too much in the multi-call
495 # decompression mode. A BCJ filter isn't used either.
496 quiet_cmd_xzkern = XZKERN  $@
497 cmd_xzkern = (cat $(filter-out FORCE,$^) | \
498         sh $(srctree)/scripts/xz_wrap.sh && \
499         $(call size_append, $(filter-out FORCE,$^))) > $@ || \
500         (rm -f $@ ; false)
501
502 quiet_cmd_xzmisc = XZMISC  $@
503 cmd_xzmisc = (cat $(filter-out FORCE,$^) | \
504         xz --check=crc32 --lzma2=dict=1MiB) > $@ || \
505         (rm -f $@ ; false)
506
507 # Additional commands for U-Boot
508 #
509 # mkimage
510 # ---------------------------------------------------------------------------
511 MKIMAGEOUTPUT ?= /dev/null
512 quiet_cmd_mkimage = MKIMAGE $@
513 cmd_mkimage = $(objtree)/tools/mkimage $(MKIMAGEFLAGS_$(@F)) -d $< $@ \
514         $(if $(KBUILD_VERBOSE:1=), >$(MKIMAGEOUTPUT))