1 # SPDX-License-Identifier: GPL-2.0
2 # Backward compatibility
3 asflags-y += $(EXTRA_AFLAGS)
4 ccflags-y += $(EXTRA_CFLAGS)
5 cppflags-y += $(EXTRA_CPPFLAGS)
6 ldflags-y += $(EXTRA_LDFLAGS)
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)
13 # Figure out what we need to build from the various variables
14 # ===========================================================================
16 # When an object is listed to be built compiled-in and modular,
17 # only build the compiled-in version
19 obj-m := $(filter-out $(obj-y),$(obj-m))
21 # Libraries are always collected in one lib file.
22 # Filter out objects already built-in
24 lib-y := $(filter-out $(obj-y), $(sort $(lib-y) $(lib-m)))
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)
31 # o if we encounter foo/ in $(obj-m), remove it from $(obj-m)
32 # and add the directory to the list of dirs to descend into: $(subdir-m)
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))
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))
46 # Subdirectories we need to descend into
48 subdir-ym := $(sort $(subdir-y) $(subdir-m))
50 # if $(foo-objs) exists, foo.o is a composite object
51 multi-used-y := $(sort $(foreach m,$(obj-y), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y))), $(m))))
52 multi-used-m := $(sort $(foreach m,$(obj-m), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y))), $(m))))
53 multi-used := $(multi-used-y) $(multi-used-m)
54 single-used-m := $(sort $(filter-out $(multi-used-m),$(obj-m)))
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)))
61 # $(subdir-obj-y) is the list of objects in $(obj-y) which uses dir/ to
62 # tell kbuild to descend
63 subdir-obj-y := $(filter %/built-in.o, $(obj-y))
65 # Replace multi-part objects by their individual parts, look at local dir only
66 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)
67 real-objs-m := $(foreach m, $(obj-m), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y))),$($(m:.o=-objs)) $($(m:.o=-y)),$(m)))
71 extra-y := $(addprefix $(obj)/,$(extra-y))
72 always := $(addprefix $(obj)/,$(always))
73 targets := $(addprefix $(obj)/,$(targets))
74 modorder := $(addprefix $(obj)/,$(modorder))
75 obj-y := $(addprefix $(obj)/,$(obj-y))
76 obj-m := $(addprefix $(obj)/,$(obj-m))
77 lib-y := $(addprefix $(obj)/,$(lib-y))
78 subdir-obj-y := $(addprefix $(obj)/,$(subdir-obj-y))
79 real-objs-y := $(addprefix $(obj)/,$(real-objs-y))
80 real-objs-m := $(addprefix $(obj)/,$(real-objs-m))
81 single-used-m := $(addprefix $(obj)/,$(single-used-m))
82 multi-used-y := $(addprefix $(obj)/,$(multi-used-y))
83 multi-used-m := $(addprefix $(obj)/,$(multi-used-m))
84 multi-objs-y := $(addprefix $(obj)/,$(multi-objs-y))
85 multi-objs-m := $(addprefix $(obj)/,$(multi-objs-m))
86 subdir-ym := $(addprefix $(obj)/,$(subdir-ym))
88 # These flags are needed for modversions and compiling, so we define them here
90 # $(modname_flags) #defines KBUILD_MODNAME as the name of the module it will
91 # end up in (or would, if it gets compiled in)
92 # Note: Files that end up in two or more modules are compiled without the
93 # KBUILD_MODNAME definition. The reason is that any made-up name would
94 # differ in different configs.
95 name-fix = $(squote)$(quote)$(subst $(comma),_,$(subst -,_,$1))$(quote)$(squote)
96 basename_flags = -DKBUILD_BASENAME=$(call name-fix,$(basetarget))
97 modname_flags = $(if $(filter 1,$(words $(modname))),\
98 -DKBUILD_MODNAME=$(call name-fix,$(modname)))
100 orig_c_flags = $(KBUILD_CPPFLAGS) $(KBUILD_CFLAGS) $(KBUILD_SUBDIR_CCFLAGS) \
101 $(ccflags-y) $(CFLAGS_$(basetarget).o)
102 _c_flags = $(filter-out $(CFLAGS_REMOVE_$(basetarget).o), $(orig_c_flags))
103 orig_a_flags = $(KBUILD_CPPFLAGS) $(KBUILD_AFLAGS) $(KBUILD_SUBDIR_ASFLAGS) \
104 $(asflags-y) $(AFLAGS_$(basetarget).o)
105 _a_flags = $(filter-out $(AFLAGS_REMOVE_$(basetarget).o), $(orig_a_flags))
106 _cpp_flags = $(KBUILD_CPPFLAGS) $(cppflags-y) $(CPPFLAGS_$(@F))
109 # Enable gcov profiling flags for a file, directory or for all files depending
110 # on variables GCOV_PROFILE_obj.o, GCOV_PROFILE and CONFIG_GCOV_PROFILE_ALL
113 ifeq ($(CONFIG_GCOV_KERNEL),y)
114 _c_flags += $(if $(patsubst n%,, \
115 $(GCOV_PROFILE_$(basetarget).o)$(GCOV_PROFILE)$(CONFIG_GCOV_PROFILE_ALL)), \
120 # Enable address sanitizer flags for kernel except some files or directories
121 # we don't want to check (depends on variables KASAN_SANITIZE_obj.o, KASAN_SANITIZE)
123 ifeq ($(CONFIG_KASAN),y)
124 _c_flags += $(if $(patsubst n%,, \
125 $(KASAN_SANITIZE_$(basetarget).o)$(KASAN_SANITIZE)y), \
129 # If building the kernel in a separate objtree expand all occurrences
130 # of -Idir to -I$(srctree)/dir except for absolute paths (starting with '/').
132 ifeq ($(KBUILD_SRC),)
133 __c_flags = $(_c_flags)
134 __a_flags = $(_a_flags)
135 __cpp_flags = $(_cpp_flags)
138 # -I$(obj) locates generated .h files
139 # $(call addtree,-I$(obj)) locates .h files in srctree, from generated .c files
140 # and locates generated .h files
141 # FIXME: Replace both with specific CFLAGS* statements in the makefiles
142 __c_flags = $(if $(obj),$(call addtree,-I$(src)) -I$(obj)) \
143 $(call flags,_c_flags)
144 __a_flags = $(call flags,_a_flags)
145 __cpp_flags = $(call flags,_cpp_flags)
148 # Modified for U-Boot: LINUXINCLUDE -> UBOOTINCLUDE
149 c_flags = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(UBOOTINCLUDE) \
150 $(__c_flags) $(modkern_cflags) \
151 $(basename_flags) $(modname_flags)
153 a_flags = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(UBOOTINCLUDE) \
154 $(__a_flags) $(modkern_aflags)
156 cpp_flags = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(UBOOTINCLUDE) \
159 ld_flags = $(KBUILD_LDFLAGS) $(ldflags-y) $(LDFLAGS_$(@F))
161 # Try these files in order to find the U-Boot-specific .dtsi include file
162 u_boot_dtsi_options = $(strip $(wildcard $(dir $<)$(basename $(notdir $<))-u-boot.dtsi) \
163 $(wildcard $(dir $<)$(subst $\",,$(CONFIG_SYS_SOC))-u-boot.dtsi) \
164 $(wildcard $(dir $<)$(subst $\",,$(CONFIG_SYS_CPU))-u-boot.dtsi) \
165 $(wildcard $(dir $<)$(subst $\",,$(CONFIG_SYS_VENDOR))-u-boot.dtsi) \
166 $(wildcard $(dir $<)u-boot.dtsi))
168 u_boot_dtsi_options_raw = $(warning Automatic .dtsi inclusion: options: \
169 $(dir $<)$(basename $(notdir $<))-u-boot.dtsi \
170 $(dir $<)$(subst $\",,$(CONFIG_SYS_SOC))-u-boot.dtsi \
171 $(dir $<)$(subst $\",,$(CONFIG_SYS_CPU))-u-boot.dtsi \
172 $(dir $<)$(subst $\",,$(CONFIG_SYS_VENDOR))-u-boot.dtsi \
173 $(dir $<)u-boot.dtsi ... \
174 found: $(if $(u_boot_dtsi_options),"$(u_boot_dtsi_options)",nothing!))
176 # Uncomment for debugging
177 # This shows all the files that were considered and the one that we chose.
178 ifdef DEVICE_TREE_DEBUG
179 u_boot_dtsi_options_debug = $(warning $(u_boot_dtsi_options_raw))
182 # We use the first match
183 u_boot_dtsi = $(strip $(u_boot_dtsi_options_debug) \
184 $(notdir $(firstword $(u_boot_dtsi_options))))
186 # Modified for U-Boot
187 dtc_cpp_flags = -Wp,-MD,$(depfile).pre.tmp -nostdinc \
188 -I$(srctree)/arch/$(ARCH)/dts \
189 -I$(srctree)/arch/$(ARCH)/dts/include \
191 -I$(srctree)/include \
192 -I$(srctree)/arch/$(ARCH)/include \
193 -include $(srctree)/include/linux/kconfig.h \
197 # Finds the multi-part object the current object will be linked into
198 modname-multi = $(sort $(foreach m,$(multi-used),\
199 $(if $(filter $(subst $(obj)/,,$*.o), $($(m:.o=-objs)) $($(m:.o=-y))),$(m:.o=))))
201 # Useful for describing the dependency of composite objects
203 # $(call multi_depend, multi_used_targets, suffix_to_remove, suffix_to_add)
205 $(foreach m, $(notdir $1), \
207 $(addprefix $(obj)/, $(foreach s, $3, $($(m:%$(strip $2)=%$(s)))))))
211 # ---------------------------------------------------------------------------
212 quiet_cmd_flex = LEX $@
213 cmd_flex = $(LEX) -o$@ -L $<
215 $(obj)/%.lex.c: $(src)/%.l FORCE
216 $(call if_changed,flex)
219 # ---------------------------------------------------------------------------
220 quiet_cmd_bison = YACC $@
221 cmd_bison = $(YACC) -o$@ -t -l $<
223 $(obj)/%.tab.c: $(src)/%.y FORCE
224 $(call if_changed,bison)
226 quiet_cmd_bison_h = YACC $@
227 cmd_bison_h = $(YACC) -o/dev/null --defines=$@ -t -l $<
229 $(obj)/%.tab.h: $(src)/%.y FORCE
230 $(call if_changed,bison_h)
233 # ===========================================================================
235 quiet_cmd_shipped = SHIPPED $@
236 cmd_shipped = cat $< > $@
238 $(obj)/%: $(src)/%_shipped
241 # Commands useful for building a boot image
242 # ===========================================================================
246 # target: source(s) FORCE
247 # $(if_changed,ld/objcopy/gzip)
249 # and add target to extra-y so that we know we have to
250 # read in the saved command line
253 # ---------------------------------------------------------------------------
256 cmd_ld = $(LD) $(ld_flags) $(filter-out FORCE,$^) -o $@
259 # ---------------------------------------------------------------------------
261 quiet_cmd_objcopy = OBJCOPY $@
262 cmd_objcopy = $(OBJCOPY) $(OBJCOPYFLAGS) $(OBJCOPYFLAGS_$(@F)) $< $@
265 # ---------------------------------------------------------------------------
267 quiet_cmd_gzip = GZIP $@
268 cmd_gzip = (cat $(filter-out FORCE,$^) | gzip -n -f -9 > $@) || \
272 # ---------------------------------------------------------------------------
274 # Disable noisy checks by default
275 ifeq ($(findstring 1,$(KBUILD_ENABLE_EXTRA_GCC_CHECKS)),)
276 DTC_FLAGS += -Wno-unit_address_vs_reg \
277 -Wno-unit_address_format \
278 -Wno-avoid_unnecessary_addr_size \
280 -Wno-graph_child_address \
282 -Wno-unique_unit_address \
283 -Wno-simple_bus_reg \
286 # U-Boot specific disables
287 DTC_FLAGS += -Wno-pci_bridge \
288 -Wno-pci_device_bus_num
291 ifneq ($(findstring 2,$(KBUILD_ENABLE_EXTRA_GCC_CHECKS)),)
292 DTC_FLAGS += -Wnode_name_chars_strict \
293 -Wproperty_name_chars_strict
296 DTC_FLAGS += $(DTC_FLAGS_$(basetarget))
298 # Generate an assembly file to wrap the output of the device tree compiler
299 quiet_cmd_dt_S_dtb= DTB $@
300 # Modified for U-Boot
303 echo '.section .dtb.init.rodata,"a"'; \
305 echo '.global __dtb_$(subst -,_,$(*F))_begin'; \
306 echo '__dtb_$(subst -,_,$(*F))_begin:'; \
307 echo '.incbin "$<" '; \
308 echo '__dtb_$(subst -,_,$(*F))_end:'; \
309 echo '.global __dtb_$(subst -,_,$(*F))_end'; \
313 $(obj)/%.dtb.S: $(obj)/%.dtb
316 ifeq ($(CONFIG_OF_LIBFDT_OVERLAY),y)
320 quiet_cmd_dtc = DTC $@
321 # Modified for U-Boot
322 # Bring in any U-Boot-specific include at the end of the file
323 # And finally any custom .dtsi fragments specified with CONFIG_DEVICE_TREE_INCLUDES
324 cmd_dtc = mkdir -p $(dir ${dtc-tmp}) ; \
325 (cat $<; $(if $(u_boot_dtsi),echo '$(pound)include "$(u_boot_dtsi)"')) > $(pre-tmp); \
326 $(foreach f,$(subst $(quote),,$(CONFIG_DEVICE_TREE_INCLUDES)), \
327 echo '$(pound)include "$(f)"' >> $(pre-tmp);) \
328 $(HOSTCC) -E $(dtc_cpp_flags) -x assembler-with-cpp -o $(dtc-tmp) $(pre-tmp) ; \
329 $(DTC) -O dtb -o $@ -b 0 \
330 -i $(dir $<) $(DTC_FLAGS) \
331 -d $(depfile).dtc.tmp $(dtc-tmp) || \
332 (echo "Check $(shell pwd)/$(pre-tmp) for errors" && false) \
334 sed "s:$(pre-tmp):$(<):" $(depfile).pre.tmp $(depfile).dtc.tmp > $(depfile)
336 $(obj)/%.dtb: $(src)/%.dts FORCE
337 $(call if_changed_dep,dtc)
339 pre-tmp = $(subst $(comma),_,$(dot-target).pre.tmp)
340 dtc-tmp = $(subst $(comma),_,$(dot-target).dts.tmp)
343 # ---------------------------------------------------------------------------
345 quiet_cmd_dtco = DTCO $@
346 # Rule for objects only; does not put specific u-boot include at the end
347 # No generation of assembly file either
348 # Modified for U-Boot
349 cmd_dtco = mkdir -p $(dir ${dtc-tmp}) ; \
350 $(CPP) $(dtc_cpp_flags) -x assembler-with-cpp -o $(dtc-tmp) $< ; \
351 $(DTC) -@ -O dtb -o $@ -b 0 \
352 -i $(dir $<) $(DTC_FLAGS) \
353 -d $(depfile).dtc.tmp $(dtc-tmp) ; \
354 cat $(depfile).pre.tmp $(depfile).dtc.tmp > $(depfile)
356 $(obj)/%.dtbo: $(src)/%.dts FORCE
357 $(call if_changed_dep,dtco)
360 # ---------------------------------------------------------------------------
362 # Generate an assembly file to wrap the font data
363 quiet_cmd_S_ttf= TTF $@
364 # Modified for U-Boot
367 echo '.section .rodata.ttf.init,"a"'; \
369 echo '.global __ttf_$(*F)_begin'; \
370 echo '__ttf_$(*F)_begin:'; \
371 echo '.incbin "$<" '; \
372 echo '__ttf_$(*F)_end:'; \
373 echo '.global __ttf_$(*F)_end'; \
377 $(obj)/%.S: $(src)/%.ttf
381 # ---------------------------------------------------------------------------
383 # Generate an assembly file to wrap the splash data
384 quiet_cmd_S_splash= TTF $@
385 # Modified for U-Boot
388 echo '.section .rodata.splash.init,"a"'; \
390 echo '.global __splash_$(*F)_begin'; \
391 echo '__splash_$(*F)_begin:'; \
392 echo '.incbin "$<" '; \
393 echo '__splash_$(*F)_end:'; \
394 echo '.global __splash_$(*F)_end'; \
398 $(obj)/%.S: $(src)/%.bmp
402 # A Makefile target *.efi is built as EFI application.
403 # A Makefile target *_efi.S wraps *.efi as built-in EFI application.
404 # ---------------------------------------------------------------------------
406 # Generate an assembly file to wrap the EFI app
409 echo '.section .rodata.$*.init,"a"'; \
411 echo '.global __efi_$*_begin'; \
412 echo '__efi_$*_begin:'; \
413 echo '.incbin "$<" '; \
414 echo '__efi_$*_end:'; \
415 echo '.global __efi_$*_end'; \
419 $(obj)/%_efi.S: $(obj)/%.efi
422 quiet_cmd_efi_objcopy = OBJCOPY $@
423 cmd_efi_objcopy = $(OBJCOPY) -j .header -j .text -j .sdata -j .data -j \
424 .dynamic -j .dynsym -j .rel* -j .rela* -j .reloc \
425 $(if $(EFI_TARGET),$(EFI_TARGET),-O binary) $^ $@
427 $(obj)/%.efi: $(obj)/%_efi.so
428 $(call cmd,efi_objcopy)
430 quiet_cmd_efi_ld = LD $@
431 cmd_efi_ld = $(LD) -nostdlib -znocombreloc -T $(EFI_LDS_PATH) -shared \
432 -Bsymbolic -znorelro -s $^ -o $@
434 EFI_LDS_PATH = $(srctree)/arch/$(ARCH)/lib/$(EFI_LDS)
436 $(obj)/efi_crt0.o: $(srctree)/arch/$(ARCH)/lib/$(EFI_CRT0:.o=.S) FORCE
437 $(call if_changed_dep,as_o_S)
439 $(obj)/efi_reloc.o: $(srctree)/arch/$(ARCH)/lib/$(EFI_RELOC:.o=.c) $(recordmcount_source) FORCE
440 $(call cmd,force_checksrc)
441 $(call if_changed_rule,cc_o_c)
443 $(obj)/%_efi.so: $(obj)/%.o $(obj)/efi_crt0.o $(obj)/efi_reloc.o $(obj)/efi_freestanding.o
446 targets += $(obj)/efi_crt0.o $(obj)/efi_reloc.o $(obj)/efi_freestanding.o
448 CFLAGS_REMOVE_efi_reloc.o := $(LTO_CFLAGS)
449 CFLAGS_REMOVE_efi_freestanding.o := $(LTO_CFLAGS)
452 # ---------------------------------------------------------------------------
454 # This first sends the file (typically dsdt.asl) through the preprocessor
455 # resolve includes and any CONFIG options used. This produces dsdt.asl.tmp
456 # which is pure ASL code. The Intel ASL (ACPI (Advanced Configuration and Power
457 # Interface) Source Language compiler (iasl) then converts this ASL code into a
458 # C file containing the hex data to build into U-Boot. This file is called
459 # dsdt_generated.hex (despite us setting the prefix to .../dsdt_generated.asl.tmp)
460 # so must be renamed to dsdt_generated.c for consumption by the build system.
461 ASL_TMP = $(patsubst %.c,%.asl.tmp,$@)
463 quiet_cmd_acpi_c_asl= ASL $<
465 $(CPP) -x assembler-with-cpp -D__ASSEMBLY__ -D__ACPI__ \
466 -P $(UBOOTINCLUDE) -o $(ASL_TMP) $< && \
467 iasl -p $@ -I $(srctree)/board/$(BOARDDIR) -tc $(ASL_TMP) \
468 $(if $(KBUILD_VERBOSE:1=), >/dev/null) && \
469 mv $(patsubst %.c,%.hex,$@) $@
471 $(obj)/dsdt_generated.c: $(src)/dsdt.asl
472 $(call cmd,acpi_c_asl)
473 $(Q)sed -i -e "s,dsdt_generated_aml_code,AmlCode," $@
476 # ---------------------------------------------------------------------------
478 # Bzip2 and LZMA do not include size in file... so we have to fake that;
479 # append the size as a 32-bit littleendian number as gzip does.
480 size_append = printf $(shell \
483 fsize=$$(stat -c "%s" $$F); \
484 dec_size=$$(expr $$dec_size + $$fsize); \
486 printf "%08x\n" $$dec_size | \
487 sed 's/\(..\)/\1 /g' | { \
488 read ch0 ch1 ch2 ch3; \
489 for ch in $$ch3 $$ch2 $$ch1 $$ch0; do \
490 printf '%s%03o' '\\' $$((0x$$ch)); \
495 quiet_cmd_bzip2 = BZIP2 $@
496 cmd_bzip2 = (cat $(filter-out FORCE,$^) | \
497 bzip2 -9 && $(call size_append, $(filter-out FORCE,$^))) > $@ || \
501 # ---------------------------------------------------------------------------
503 quiet_cmd_lzma = LZMA $@
504 cmd_lzma = (cat $(filter-out FORCE,$^) | \
505 lzma -9 && $(call size_append, $(filter-out FORCE,$^))) > $@ || \
508 quiet_cmd_lzo = LZO $@
509 cmd_lzo = (cat $(filter-out FORCE,$^) | \
510 lzop -9 && $(call size_append, $(filter-out FORCE,$^))) > $@ || \
513 quiet_cmd_lz4 = LZ4 $@
514 cmd_lz4 = (cat $(filter-out FORCE,$^) | \
515 lz4c -l -c1 stdin stdout && $(call size_append, $(filter-out FORCE,$^))) > $@ || \
519 # ---------------------------------------------------------------------------
521 MKIMAGE := $(srctree)/scripts/mkuboot.sh
523 # SRCARCH just happens to match slightly more than ARCH (on sparc), so reduces
524 # the number of overrides in arch makefiles
525 UIMAGE_ARCH ?= $(SRCARCH)
526 UIMAGE_COMPRESSION ?= $(if $(2),$(2),none)
528 UIMAGE_TYPE ?= kernel
529 UIMAGE_LOADADDR ?= arch_must_set_this
530 UIMAGE_ENTRYADDR ?= $(UIMAGE_LOADADDR)
531 UIMAGE_NAME ?= 'Linux-$(KERNELRELEASE)'
535 quiet_cmd_uimage = UIMAGE $(UIMAGE_OUT)
536 cmd_uimage = $(CONFIG_SHELL) $(MKIMAGE) -A $(UIMAGE_ARCH) -O linux \
537 -C $(UIMAGE_COMPRESSION) $(UIMAGE_OPTS-y) \
539 -a $(UIMAGE_LOADADDR) -e $(UIMAGE_ENTRYADDR) \
540 -n $(UIMAGE_NAME) -d $(UIMAGE_IN) $(UIMAGE_OUT)
543 # ---------------------------------------------------------------------------
544 # Use xzkern to compress the kernel image and xzmisc to compress other things.
546 # xzkern uses a big LZMA2 dictionary since it doesn't increase memory usage
547 # of the kernel decompressor. A BCJ filter is used if it is available for
548 # the target architecture. xzkern also appends uncompressed size of the data
549 # using size_append. The .xz format has the size information available at
550 # the end of the file too, but it's in more complex format and it's good to
551 # avoid changing the part of the boot code that reads the uncompressed size.
552 # Note that the bytes added by size_append will make the xz tool think that
553 # the file is corrupt. This is expected.
555 # xzmisc doesn't use size_append, so it can be used to create normal .xz
556 # files. xzmisc uses smaller LZMA2 dictionary than xzkern, because a very
557 # big dictionary would increase the memory usage too much in the multi-call
558 # decompression mode. A BCJ filter isn't used either.
559 quiet_cmd_xzkern = XZKERN $@
560 cmd_xzkern = (cat $(filter-out FORCE,$^) | \
561 sh $(srctree)/scripts/xz_wrap.sh && \
562 $(call size_append, $(filter-out FORCE,$^))) > $@ || \
565 quiet_cmd_xzmisc = XZMISC $@
566 cmd_xzmisc = (cat $(filter-out FORCE,$^) | \
567 xz --check=crc32 --lzma2=dict=1MiB) > $@ || \
570 # Additional commands for U-Boot
573 # ---------------------------------------------------------------------------
574 MKIMAGEOUTPUT ?= /dev/null
575 quiet_cmd_mkimage = MKIMAGE $@
576 cmd_mkimage = $(objtree)/tools/mkimage $(MKIMAGEFLAGS_$(@F)) -d $< $@ \
577 >$(MKIMAGEOUTPUT) $(if $(KBUILD_VERBOSE:0=), && cat $(MKIMAGEOUTPUT))
580 # ---------------------------------------------------------------------------
581 # Pass the original device tree file through fdtgrep twice. The first pass
582 # removes any unwanted nodes (i.e. those which don't have the
583 # 'u-boot,dm-pre-reloc' property and thus are not needed by SPL. The second
584 # pass removes various unused properties from the remaining nodes.
585 # The output is typically a much smaller device tree file.
586 ifeq ($(CONFIG_TPL_BUILD),y)
587 fdtgrep_props := -b u-boot,dm-pre-reloc -b u-boot,dm-tpl
589 fdtgrep_props := -b u-boot,dm-pre-reloc -b u-boot,dm-spl
591 quiet_cmd_fdtgrep = FDTGREP $@
592 cmd_fdtgrep = $(objtree)/tools/fdtgrep $(fdtgrep_props) -RT $< \
593 -n /chosen -n /config -O dtb | \
594 $(objtree)/tools/fdtgrep -r -O dtb - -o $@ \
595 -P u-boot,dm-pre-reloc -P u-boot,dm-spl -P u-boot,dm-tpl \
596 $(addprefix -P ,$(subst $\",,$(CONFIG_OF_SPL_REMOVE_PROPS)))
599 # ---------------------------------------------------------------------------
600 # Pass the original device tree file through fdtgrep. This removes various
601 # unused properties. The output is typically a smaller device tree file.
602 quiet_cmd_fdt_rm_props = FDTGREP $@
603 cmd_fdt_rm_props = cat $< | $(objtree)/tools/fdtgrep -r -O dtb - -o $@ \
604 $(addprefix -P ,$(subst $\",,$(CONFIG_OF_REMOVE_PROPS)))
607 # ---------------------------------------------------------------------------
609 # Default sed regexp - multiline due to syntax constraints
611 "s:[[:space:]]*\.ascii[[:space:]]*\"\(.*\)\":\1:; \
612 /^->/{s:->#\(.*\):/* \1 */:; \
613 s:^->\([^ ]*\) [\$$#]*\([-0-9]*\) \(.*\):#define \1 \2 /* \3 */:; \
614 s:^->\([^ ]*\) [\$$#]*\([^ ]*\) \(.*\):#define \1 \2 /* \3 */:; \
618 # Use filechk to avoid rebuilds when a header changes, but the resulting file
620 define filechk_offsets
625 echo " * DO NOT MODIFY."; \
627 echo " * This file was generated by Kbuild"; \
630 sed -ne $(sed-offsets); \