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 # Expand $(foo-objs) $(foo-y) etc. by replacing their individuals
51 suffix-search = $(strip $(foreach s, $3, $($(1:%$(strip $2)=%$s))))
52 # List composite targets that are constructed by combining other targets
53 multi-search = $(sort $(foreach m, $1, $(if $(call suffix-search, $m, $2, $3 -), $m)))
54 # List primitive targets that are compiled from source files
55 real-search = $(foreach m, $1, $(if $(call suffix-search, $m, $2, $3 -), $(call suffix-search, $m, $2, $3), $m))
57 # if $(foo-objs) exists, foo.o is a composite object
58 multi-used-y := $(sort $(foreach m,$(obj-y), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y))), $(m))))
59 multi-used-m := $(sort $(foreach m,$(obj-m), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y))), $(m))))
60 multi-used := $(multi-used-y) $(multi-used-m)
61 single-used-m := $(sort $(filter-out $(multi-used-m),$(obj-m)))
63 # Build list of the parts of our composite objects, our composite
64 # objects depend on those (obviously)
65 multi-objs-y := $(foreach m, $(multi-used-y), $($(m:.o=-objs)) $($(m:.o=-y)))
66 multi-objs-m := $(foreach m, $(multi-used-m), $($(m:.o=-objs)) $($(m:.o=-y)))
68 # Composite DTB (i.e. DTB constructed by overlay)
69 multi-dtb-y := $(call multi-search, $(dtb-y), .dtb, -dtbs)
70 # Primitive DTB compiled from *.dts
71 real-dtb-y := $(call real-search, $(dtb-y), .dtb, -dtbs)
72 # Base DTB that overlay is applied onto (each first word of $(*-dtbs) expansion)
73 base-dtb-y := $(foreach m, $(multi-dtb-y), $(firstword $(call suffix-search, $m, .dtb, -dtbs)))
75 # $(subdir-obj-y) is the list of objects in $(obj-y) which uses dir/ to
76 # tell kbuild to descend
77 subdir-obj-y := $(filter %/built-in.o, $(obj-y))
79 # Replace multi-part objects by their individual parts, look at local dir only
80 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)
81 real-objs-m := $(foreach m, $(obj-m), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y))),$($(m:.o=-objs)) $($(m:.o=-y)),$(m)))
85 extra-y := $(addprefix $(obj)/,$(extra-y))
86 always-y := $(addprefix $(obj)/,$(always-y))
87 always := $(addprefix $(obj)/,$(always))
88 targets := $(addprefix $(obj)/,$(targets))
89 modorder := $(addprefix $(obj)/,$(modorder))
90 obj-y := $(addprefix $(obj)/,$(obj-y))
91 obj-m := $(addprefix $(obj)/,$(obj-m))
92 lib-y := $(addprefix $(obj)/,$(lib-y))
93 subdir-obj-y := $(addprefix $(obj)/,$(subdir-obj-y))
94 real-objs-y := $(addprefix $(obj)/,$(real-objs-y))
95 real-objs-m := $(addprefix $(obj)/,$(real-objs-m))
96 single-used-m := $(addprefix $(obj)/,$(single-used-m))
97 multi-used-y := $(addprefix $(obj)/,$(multi-used-y))
98 multi-used-m := $(addprefix $(obj)/,$(multi-used-m))
99 multi-objs-y := $(addprefix $(obj)/,$(multi-objs-y))
100 multi-objs-m := $(addprefix $(obj)/,$(multi-objs-m))
101 multi-dtb-y := $(addprefix $(obj)/,$(multi-dtb-y))
102 real-dtb-y := $(addprefix $(obj)/,$(real-dtb-y))
103 subdir-ym := $(addprefix $(obj)/,$(subdir-ym))
105 # These flags are needed for modversions and compiling, so we define them here
107 # $(modname_flags) #defines KBUILD_MODNAME as the name of the module it will
108 # end up in (or would, if it gets compiled in)
109 # Note: Files that end up in two or more modules are compiled without the
110 # KBUILD_MODNAME definition. The reason is that any made-up name would
111 # differ in different configs.
112 name-fix = $(squote)$(quote)$(subst $(comma),_,$(subst -,_,$1))$(quote)$(squote)
113 basename_flags = -DKBUILD_BASENAME=$(call name-fix,$(basetarget))
114 modname_flags = $(if $(filter 1,$(words $(modname))),\
115 -DKBUILD_MODNAME=$(call name-fix,$(modname)))
117 orig_c_flags = $(KBUILD_CPPFLAGS) $(KBUILD_CFLAGS) $(KBUILD_SUBDIR_CCFLAGS) \
118 $(ccflags-y) $(CFLAGS_$(basetarget).o)
119 _c_flags = $(filter-out $(CFLAGS_REMOVE_$(basetarget).o), $(orig_c_flags))
120 orig_a_flags = $(KBUILD_CPPFLAGS) $(KBUILD_AFLAGS) $(KBUILD_SUBDIR_ASFLAGS) \
121 $(asflags-y) $(AFLAGS_$(basetarget).o)
122 _a_flags = $(filter-out $(AFLAGS_REMOVE_$(basetarget).o), $(orig_a_flags))
123 _cpp_flags = $(KBUILD_CPPFLAGS) $(cppflags-y) $(CPPFLAGS_$(@F))
126 # Enable gcov profiling flags for a file, directory or for all files depending
127 # on variables GCOV_PROFILE_obj.o, GCOV_PROFILE and CONFIG_GCOV_PROFILE_ALL
130 ifeq ($(CONFIG_GCOV_KERNEL),y)
131 _c_flags += $(if $(patsubst n%,, \
132 $(GCOV_PROFILE_$(basetarget).o)$(GCOV_PROFILE)$(CONFIG_GCOV_PROFILE_ALL)), \
137 # Enable address sanitizer flags for kernel except some files or directories
138 # we don't want to check (depends on variables KASAN_SANITIZE_obj.o, KASAN_SANITIZE)
140 ifeq ($(CONFIG_KASAN),y)
141 _c_flags += $(if $(patsubst n%,, \
142 $(KASAN_SANITIZE_$(basetarget).o)$(KASAN_SANITIZE)y), \
146 # If building the kernel in a separate objtree expand all occurrences
147 # of -Idir to -I$(srctree)/dir except for absolute paths (starting with '/').
149 ifeq ($(KBUILD_SRC),)
150 __c_flags = $(_c_flags)
151 __a_flags = $(_a_flags)
152 __cpp_flags = $(_cpp_flags)
155 # -I$(obj) locates generated .h files
156 # $(call addtree,-I$(obj)) locates .h files in srctree, from generated .c files
157 # and locates generated .h files
158 # FIXME: Replace both with specific CFLAGS* statements in the makefiles
159 __c_flags = $(if $(obj),$(call addtree,-I$(src)) -I$(obj)) \
160 $(call flags,_c_flags)
161 __a_flags = $(call flags,_a_flags)
162 __cpp_flags = $(call flags,_cpp_flags)
165 # Modified for U-Boot: LINUXINCLUDE -> UBOOTINCLUDE
166 c_flags = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(UBOOTINCLUDE) \
167 $(__c_flags) $(modkern_cflags) \
168 $(basename_flags) $(modname_flags)
170 a_flags = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(UBOOTINCLUDE) \
171 $(__a_flags) $(modkern_aflags)
173 cpp_flags = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(UBOOTINCLUDE) \
176 ld_flags = $(KBUILD_LDFLAGS) $(ldflags-y) $(LDFLAGS_$(@F))
178 # Try these files in order to find the U-Boot-specific .dtsi include file
179 u_boot_dtsi_loc = $(srctree)/arch/$(ARCH)/dts/
181 u_boot_dtsi_options = $(strip $(wildcard $(u_boot_dtsi_loc)$(basename $(notdir $<))-u-boot.dtsi) \
182 $(wildcard $(u_boot_dtsi_loc)$(subst $\",,$(CONFIG_SYS_SOC))-u-boot.dtsi) \
183 $(wildcard $(u_boot_dtsi_loc)$(subst $\",,$(CONFIG_SYS_CPU))-u-boot.dtsi) \
184 $(wildcard $(u_boot_dtsi_loc)$(subst $\",,$(CONFIG_SYS_VENDOR))-u-boot.dtsi) \
185 $(wildcard $(u_boot_dtsi_loc)u-boot.dtsi))
187 u_boot_dtsi_options_raw = $(warning Automatic .dtsi inclusion: options: \
188 $(u_boot_dtsi_loc)$(basename $(notdir $<))-u-boot.dtsi \
189 $(u_boot_dtsi_loc)$(subst $\",,$(CONFIG_SYS_SOC))-u-boot.dtsi \
190 $(u_boot_dtsi_loc)$(subst $\",,$(CONFIG_SYS_CPU))-u-boot.dtsi \
191 $(u_boot_dtsi_loc)$(subst $\",,$(CONFIG_SYS_VENDOR))-u-boot.dtsi \
192 $(u_boot_dtsi_loc)u-boot.dtsi ... \
193 found: $(if $(u_boot_dtsi_options),"$(u_boot_dtsi_options)",nothing!))
195 # Uncomment for debugging
196 # This shows all the files that were considered and the one that we chose.
197 ifdef DEVICE_TREE_DEBUG
198 u_boot_dtsi_options_debug = $(warning $(u_boot_dtsi_options_raw))
201 # We use the first match to be included
202 dtsi_include_list = $(strip $(u_boot_dtsi_options_debug) \
203 $(notdir $(firstword $(u_boot_dtsi_options))))
205 # Modified for U-Boot
206 upstream_dtsi_include = $(addprefix -I, $(srctree)/dts/upstream/src/ \
207 $(sort $(dir $(wildcard $(srctree)/dts/upstream/src/$(ARCH)/*/*))) \
208 $(if (CONFIG_ARM64), \
209 $(sort $(dir $(wildcard $(srctree)/dts/upstream/src/arm64/*/*)))))
210 dtc_cpp_flags = -Wp,-MD,$(depfile).pre.tmp -nostdinc \
213 -I$(u_boot_dtsi_loc) \
214 -I$(srctree)/arch/$(ARCH)/dts/include \
215 -I$(srctree)/include \
216 $(upstream_dtsi_include) \
220 # Finds the multi-part object the current object will be linked into
221 modname-multi = $(sort $(foreach m,$(multi-used),\
222 $(if $(filter $(subst $(obj)/,,$*.o), $($(m:.o=-objs)) $($(m:.o=-y))),$(m:.o=))))
224 # Useful for describing the dependency of composite objects
226 # $(call multi_depend, multi_used_targets, suffix_to_remove, suffix_to_add)
228 $(foreach m, $(notdir $1), \
230 $(addprefix $(obj)/, $(foreach s, $3, $($(m:%$(strip $2)=%$(s)))))))
234 # ---------------------------------------------------------------------------
235 quiet_cmd_flex = LEX $@
236 cmd_flex = $(LEX) -o$@ -L $<
238 $(obj)/%.lex.c: $(src)/%.l FORCE
239 $(call if_changed,flex)
242 # ---------------------------------------------------------------------------
243 quiet_cmd_bison = YACC $@
244 cmd_bison = $(YACC) -o$@ -t -l $<
246 $(obj)/%.tab.c: $(src)/%.y FORCE
247 $(call if_changed,bison)
249 quiet_cmd_bison_h = YACC $@
250 cmd_bison_h = $(YACC) -o/dev/null --defines=$@ -t -l $<
252 $(obj)/%.tab.h: $(src)/%.y FORCE
253 $(call if_changed,bison_h)
256 # ===========================================================================
258 quiet_cmd_shipped = SHIPPED $@
259 cmd_shipped = cat $< > $@
261 $(obj)/%: $(src)/%_shipped
264 # Commands useful for building a boot image
265 # ===========================================================================
269 # target: source(s) FORCE
270 # $(if_changed,ld/objcopy/gzip)
272 # and add target to extra-y so that we know we have to
273 # read in the saved command line
276 # ---------------------------------------------------------------------------
279 cmd_ld = $(LD) $(ld_flags) $(filter-out FORCE,$^) -o $@
282 # ---------------------------------------------------------------------------
284 quiet_cmd_objcopy = OBJCOPY $@
285 cmd_objcopy = $(OBJCOPY) $(OBJCOPYFLAGS) $(OBJCOPYFLAGS_$(@F)) $< $@
288 # ---------------------------------------------------------------------------
290 quiet_cmd_gzip = GZIP $@
291 cmd_gzip = (cat $(filter-out FORCE,$^) | gzip -n -f -9 > $@) || \
295 # ---------------------------------------------------------------------------
297 # Disable noisy checks by default
298 ifeq ($(findstring 1,$(KBUILD_ENABLE_EXTRA_GCC_CHECKS)),)
299 DTC_FLAGS += -Wno-unit_address_vs_reg \
300 -Wno-unit_address_format \
301 -Wno-avoid_unnecessary_addr_size \
303 -Wno-graph_child_address \
305 -Wno-unique_unit_address \
306 -Wno-simple_bus_reg \
309 # U-Boot specific disables
310 DTC_FLAGS += -Wno-pci_bridge \
311 -Wno-pci_device_bus_num
314 ifneq ($(findstring 2,$(KBUILD_ENABLE_EXTRA_GCC_CHECKS)),)
315 DTC_FLAGS += -Wnode_name_chars_strict \
316 -Wproperty_name_chars_strict
319 DTC_FLAGS += $(DTC_FLAGS_$(basetarget))
321 # Set -@ if the target is a base DTB that overlay is applied onto
322 DTC_FLAGS += $(if $(filter $(patsubst $(obj)/%,%,$@), $(base-dtb-y)), -@)
324 # Generate an assembly file to wrap the output of the device tree compiler
325 quiet_cmd_dt_S_dtb= DTBS $@
326 # Modified for U-Boot
329 echo '.section .dtb.init.rodata,"a"'; \
331 echo '.global __dtb_$(subst -,_,$(*F))_begin'; \
332 echo '__dtb_$(subst -,_,$(*F))_begin:'; \
333 echo '.incbin "$<" '; \
334 echo '__dtb_$(subst -,_,$(*F))_end:'; \
335 echo '.global __dtb_$(subst -,_,$(*F))_end'; \
339 $(obj)/%.dtb.S: $(obj)/%.dtb
342 # Generate an assembly file to wrap the output of the device tree compiler
343 quiet_cmd_dt_S_dtbo= DTBOS $@
344 # Modified for U-Boot
347 echo '.section .dtb.init.rodata,"a"'; \
349 echo '.global __dtbo_$(subst -,_,$(*F))_begin'; \
350 echo '__dtbo_$(subst -,_,$(*F))_begin:'; \
351 echo '.incbin "$<" '; \
352 echo '__dtbo_$(subst -,_,$(*F))_end:'; \
353 echo '.global __dtbo_$(subst -,_,$(*F))_end'; \
357 $(obj)/%.dtbo.S: $(obj)/%.dtbo
358 $(call cmd,dt_S_dtbo)
360 ifeq ($(CONFIG_OF_LIBFDT_OVERLAY),y)
364 quiet_cmd_dtc = DTC $@
365 # Modified for U-Boot
366 # Bring in any U-Boot-specific include at the end of the file
367 # And finally any custom .dtsi fragments specified with CONFIG_DEVICE_TREE_INCLUDES
368 cmd_dtc = mkdir -p $(dir ${dtc-tmp}) ; \
369 (cat $< > $(pre-tmp)); \
370 $(foreach f,$(subst $(quote),,$(dtsi_include_list) $(CONFIG_DEVICE_TREE_INCLUDES)), \
371 echo '$(pound)include "$(f)"' >> $(pre-tmp);) \
372 $(HOSTCC) -E $(dtc_cpp_flags) -I$(obj) -x assembler-with-cpp -o $(dtc-tmp) $(pre-tmp) ; \
373 $(DTC) -O dtb -o $@ -b 0 \
374 -i $(dir $<) -i $(u_boot_dtsi_loc) $(DTC_FLAGS) \
375 -d $(depfile).dtc.tmp $(dtc-tmp) || \
376 (echo "Check $(shell pwd)/$(pre-tmp) for errors" && false) \
378 sed "s:$(pre-tmp):$(<):" $(depfile).pre.tmp $(depfile).dtc.tmp > $(depfile)
380 capsule_esl_input_file=$(srctree)/lib/efi_loader/capsule_esl.dtsi.in
381 capsule_crt_file=$(subst $(quote),,$(CONFIG_EFI_CAPSULE_CRT_FILE))
382 capsule_esl_dtsi=.capsule_esl.dtsi
384 quiet_cmd_capsule_esl_gen = CAPSULE_ESL_GEN $@
385 cmd_capsule_esl_gen = cert-to-efi-sig-list $< $@
387 $(obj)/capsule_esl_file: $(capsule_crt_file) FORCE
388 ifeq ($(CONFIG_EFI_CAPSULE_CRT_FILE),"")
389 $(error "CONFIG_EFI_CAPSULE_CRT_FILE is empty, EFI capsule authentication \
390 public key must be specified when CONFIG_EFI_CAPSULE_AUTHENTICATE is enabled")
392 $(call cmd,capsule_esl_gen)
395 quiet_cmd_capsule_dtsi_gen = CAPSULE_DTSI_GEN $@
396 cmd_capsule_dtsi_gen = \
397 $(shell sed "s:ESL_BIN_FILE:$(abspath $<):" $(capsule_esl_input_file) > $@)
399 $(obj)/$(capsule_esl_dtsi): $(obj)/capsule_esl_file FORCE
400 $(call cmd,capsule_dtsi_gen)
402 dtsi_include_list_deps := $(addprefix $(u_boot_dtsi_loc),$(subst $(quote),,$(dtsi_include_list)))
404 ifdef CONFIG_EFI_CAPSULE_AUTHENTICATE
405 dtsi_include_list += $(capsule_esl_dtsi)
406 dtsi_include_list_deps += $(obj)/$(capsule_esl_dtsi)
409 ifneq ($(CHECK_DTBS),)
410 DT_CHECKER ?= dt-validate
411 DT_CHECKER_FLAGS ?= $(if $(DT_SCHEMA_FILES),-l $(DT_SCHEMA_FILES),-m)
412 DT_BINDING_DIR := dts/upstream/Bindings
413 DT_TMP_SCHEMA := $(objtree)/$(DT_BINDING_DIR)/processed-schema.json
415 quiet_cmd_dtb = DTC_CHK $@
416 cmd_dtb = $(cmd_dtc) ; $(DT_CHECKER) $(DT_CHECKER_FLAGS) -u $(srctree)/$(DT_BINDING_DIR) -p $(DT_TMP_SCHEMA) $@ || true
418 quiet_cmd_dtb = $(quiet_cmd_dtc)
422 $(obj)/%.dtb: $(src)/%.dts $(DTC) $(dtsi_include_list_deps) $(DT_TMP_SCHEMA) FORCE
423 $(call if_changed_dep,dtb)
425 pre-tmp = $(subst $(comma),_,$(dot-target).pre.tmp)
426 dtc-tmp = $(subst $(comma),_,$(dot-target).dts.tmp)
429 # ---------------------------------------------------------------------------
431 quiet_cmd_dtco = DTCO $@
432 # Rule for objects only; does not put specific u-boot include at the end
433 # No generation of assembly file either
434 # Modified for U-Boot
435 cmd_dtco = mkdir -p $(dir ${dtc-tmp}) ; \
436 $(CPP) $(dtc_cpp_flags) -x assembler-with-cpp -o $(dtc-tmp) $< ; \
437 $(DTC) -@ -O dtb -o $@ -b 0 \
438 -i $(dir $<) $(DTC_FLAGS) \
439 -d $(depfile).dtc.tmp $(dtc-tmp) ; \
440 cat $(depfile).pre.tmp $(depfile).dtc.tmp > $(depfile)
442 $(obj)/%.dtbo: $(src)/%.dtso $(DTC) FORCE
443 $(call if_changed_dep,dtco)
445 quiet_cmd_fdtoverlay = DTOVL $@
446 cmd_fdtoverlay = fdtoverlay -o $@ -i $(real-prereqs)
448 $(multi-dtb-y): FORCE
449 $(call if_changed,fdtoverlay)
450 $(call multi_depend, $(multi-dtb-y), .dtb, -dtbs)
453 # ---------------------------------------------------------------------------
455 # Generate an assembly file to wrap the font data
456 quiet_cmd_S_ttf= TTF $@
457 # Modified for U-Boot
460 echo '.section .rodata.ttf.init,"a"'; \
462 echo '.global __ttf_$(*F)_begin'; \
463 echo '__ttf_$(*F)_begin:'; \
464 echo '.incbin "$<" '; \
465 echo '__ttf_$(*F)_end:'; \
466 echo '.global __ttf_$(*F)_end'; \
470 $(obj)/%.S: $(src)/%.ttf
474 # ---------------------------------------------------------------------------
476 # Generate an assembly file to wrap the splash data
477 quiet_cmd_S_splash= TTF $@
478 # Modified for U-Boot
481 echo '.section .rodata.splash.init,"a"'; \
483 echo '.global __splash_$(*F)_begin'; \
484 echo '__splash_$(*F)_begin:'; \
485 echo '.incbin "$<" '; \
486 echo '__splash_$(*F)_end:'; \
487 echo '.global __splash_$(*F)_end'; \
491 $(obj)/%.S: $(src)/%.bmp
495 # A Makefile target *.efi is built as EFI application.
496 # A Makefile target *_efi.S wraps *.efi as built-in EFI application.
497 # ---------------------------------------------------------------------------
499 # Generate an assembly file to wrap the EFI app
502 echo '.section .rodata.$*.init,"a"'; \
504 echo '.global __efi_$*_begin'; \
505 echo '__efi_$*_begin:'; \
506 echo '.incbin "$<" '; \
507 echo '__efi_$*_end:'; \
508 echo '.global __efi_$*_end'; \
512 $(obj)/%_efi.S: $(obj)/%.efi
515 quiet_cmd_efi_objcopy = OBJCOPY $@
516 cmd_efi_objcopy = $(OBJCOPY) -j .header -j .text -j .sdata -j .data -j \
517 .dynamic -j .dynsym -j .rel* -j .rela* -j .reloc \
518 $(if $(EFI_TARGET),$(EFI_TARGET),-O binary) $^ $@
520 $(obj)/%.efi: $(obj)/%_efi.so
521 $(call cmd,efi_objcopy)
523 KBUILD_EFILDFLAGS = -nostdlib -zexecstack -znocombreloc -znorelro
524 KBUILD_EFILDFLAGS += $(call ld-option,--no-warn-rwx-segments)
525 quiet_cmd_efi_ld = LD $@
526 cmd_efi_ld = $(LD) $(KBUILD_EFILDFLAGS) -T $(EFI_LDS_PATH) \
527 -shared -Bsymbolic -s $^ -o $@
529 EFI_LDS_PATH = $(srctree)/arch/$(ARCH)/lib/$(EFI_LDS)
531 $(obj)/efi_crt0.o: $(srctree)/arch/$(ARCH)/lib/$(EFI_CRT0:.o=.S) FORCE
532 $(call if_changed_dep,as_o_S)
534 $(obj)/efi_reloc.o: $(srctree)/arch/$(ARCH)/lib/$(EFI_RELOC:.o=.c) $(recordmcount_source) FORCE
535 $(call cmd,force_checksrc)
536 $(call if_changed_rule,cc_o_c)
538 $(obj)/%_efi.so: $(obj)/%.o $(obj)/efi_crt0.o $(obj)/efi_reloc.o $(obj)/efi_freestanding.o
541 targets += $(obj)/efi_crt0.o $(obj)/efi_reloc.o $(obj)/efi_freestanding.o
543 CFLAGS_REMOVE_efi_reloc.o := $(LTO_CFLAGS)
544 CFLAGS_REMOVE_efi_freestanding.o := $(LTO_CFLAGS)
547 # ---------------------------------------------------------------------------
549 # This first sends the file (typically dsdt.asl) through the preprocessor
550 # resolve includes and any CONFIG options used. This produces dsdt.asl.tmp
551 # which is pure ASL code. The Intel ASL (ACPI (Advanced Configuration and Power
552 # Interface) Source Language compiler (iasl) then converts this ASL code into a
553 # C file containing the hex data to build into U-Boot. This file is called
554 # dsdt_generated.hex (despite us setting the prefix to .../dsdt_generated.asl.tmp)
555 # so must be renamed to dsdt_generated.c for consumption by the build system.
556 ASL_TMP = $(patsubst %.c,%.asl.tmp,$@)
558 quiet_cmd_acpi_c_asl= ASL $<
560 $(CPP) -x assembler-with-cpp -D__ASSEMBLY__ -D__ACPI__ \
561 -P $(UBOOTINCLUDE) -o $(ASL_TMP) $< && \
562 iasl -p $@ -I $(srctree)/board/$(BOARDDIR) -tc $(ASL_TMP) \
563 $(if $(KBUILD_VERBOSE:1=), >/dev/null) && \
564 mv $(patsubst %.c,%.hex,$@) $@
566 $(obj)/dsdt_generated.c: $(src)/dsdt.asl
567 $(call cmd,acpi_c_asl)
568 $(Q)sed -i -e "s,dsdt_generated_aml_code,AmlCode," $@
571 # ---------------------------------------------------------------------------
573 # Bzip2 and LZMA do not include size in file... so we have to fake that;
574 # append the size as a 32-bit littleendian number as gzip does.
575 size_append = printf $(shell \
578 fsize=$$(stat -c "%s" $$F); \
579 dec_size=$$(expr $$dec_size + $$fsize); \
581 printf "%08x\n" $$dec_size | \
582 sed 's/\(..\)/\1 /g' | { \
583 read ch0 ch1 ch2 ch3; \
584 for ch in $$ch3 $$ch2 $$ch1 $$ch0; do \
585 printf '%s%03o' '\\' $$((0x$$ch)); \
590 quiet_cmd_bzip2 = BZIP2 $@
591 cmd_bzip2 = (cat $(filter-out FORCE,$^) | \
592 bzip2 -9 && $(call size_append, $(filter-out FORCE,$^))) > $@ || \
596 # ---------------------------------------------------------------------------
598 quiet_cmd_lzma = LZMA $@
599 cmd_lzma = (cat $(filter-out FORCE,$^) | \
600 lzma -9 && $(call size_append, $(filter-out FORCE,$^))) > $@ || \
603 quiet_cmd_lzo = LZO $@
604 cmd_lzo = (cat $(filter-out FORCE,$^) | \
605 lzop -9 && $(call size_append, $(filter-out FORCE,$^))) > $@ || \
608 quiet_cmd_lz4 = LZ4 $@
609 cmd_lz4 = (cat $(filter-out FORCE,$^) | \
610 lz4c -l -c1 stdin stdout && $(call size_append, $(filter-out FORCE,$^))) > $@ || \
614 # ---------------------------------------------------------------------------
616 MKIMAGE := $(srctree)/scripts/mkuboot.sh
618 # SRCARCH just happens to match slightly more than ARCH (on sparc), so reduces
619 # the number of overrides in arch makefiles
620 UIMAGE_ARCH ?= $(SRCARCH)
621 UIMAGE_COMPRESSION ?= $(if $(2),$(2),none)
623 UIMAGE_TYPE ?= kernel
624 UIMAGE_LOADADDR ?= arch_must_set_this
625 UIMAGE_ENTRYADDR ?= $(UIMAGE_LOADADDR)
626 UIMAGE_NAME ?= 'Linux-$(KERNELRELEASE)'
630 quiet_cmd_uimage = UIMAGE $(UIMAGE_OUT)
631 cmd_uimage = $(CONFIG_SHELL) $(MKIMAGE) -A $(UIMAGE_ARCH) -O linux \
632 -C $(UIMAGE_COMPRESSION) $(UIMAGE_OPTS-y) \
634 -a $(UIMAGE_LOADADDR) -e $(UIMAGE_ENTRYADDR) \
635 -n $(UIMAGE_NAME) -d $(UIMAGE_IN) $(UIMAGE_OUT)
638 # ---------------------------------------------------------------------------
639 # Use xzkern to compress the kernel image and xzmisc to compress other things.
641 # xzkern uses a big LZMA2 dictionary since it doesn't increase memory usage
642 # of the kernel decompressor. A BCJ filter is used if it is available for
643 # the target architecture. xzkern also appends uncompressed size of the data
644 # using size_append. The .xz format has the size information available at
645 # the end of the file too, but it's in more complex format and it's good to
646 # avoid changing the part of the boot code that reads the uncompressed size.
647 # Note that the bytes added by size_append will make the xz tool think that
648 # the file is corrupt. This is expected.
650 # xzmisc doesn't use size_append, so it can be used to create normal .xz
651 # files. xzmisc uses smaller LZMA2 dictionary than xzkern, because a very
652 # big dictionary would increase the memory usage too much in the multi-call
653 # decompression mode. A BCJ filter isn't used either.
654 quiet_cmd_xzkern = XZKERN $@
655 cmd_xzkern = (cat $(filter-out FORCE,$^) | \
656 sh $(srctree)/scripts/xz_wrap.sh && \
657 $(call size_append, $(filter-out FORCE,$^))) > $@ || \
660 quiet_cmd_xzmisc = XZMISC $@
661 cmd_xzmisc = (cat $(filter-out FORCE,$^) | \
662 xz --check=crc32 --lzma2=dict=1MiB) > $@ || \
665 # Additional commands for U-Boot
668 # ---------------------------------------------------------------------------
669 quiet_cmd_bin2c = BIN2C $@
670 cmd_bin2c = $(objtree)/scripts/bin2c $2 < $< > $@
673 # ---------------------------------------------------------------------------
674 MKIMAGEOUTPUT ?= /dev/null
675 quiet_cmd_mkimage = MKIMAGE $@
676 cmd_mkimage = $(objtree)/tools/mkimage $(MKIMAGEFLAGS_$(@F)) -d $< $@ \
677 >$(MKIMAGEOUTPUT) $(if $(KBUILD_VERBOSE:0=), && cat $(MKIMAGEOUTPUT))
680 # ---------------------------------------------------------------------------
681 # Pass the original device tree file through fdtgrep twice. The first pass
682 # removes any unwanted nodes (i.e. those which don't have the
683 # 'bootph-all' property and thus are not needed by SPL. The second
684 # pass removes various unused properties from the remaining nodes.
685 # The output is typically a much smaller device tree file.
687 ifdef CONFIG_OF_TAG_MIGRATE
688 # Support the old tags for a migration period
689 migrate_tpl := -b u-boot,dm-pre-reloc -b u-boot,dm-tpl
690 migrate_vpl := -b u-boot,dm-pre-reloc -b u-boot,dm-vpl
691 migrate_spl := -b u-boot,dm-pre-reloc -b u-boot,dm-spl
692 migrate_all := -P u-boot,dm-pre-reloc \
693 -P u-boot,dm-spl -P u-boot,dm-tpl -P u-boot,dm-vpl
696 ifeq ($(CONFIG_VPL_BUILD),y)
697 fdtgrep_props := -b bootph-all -b bootph-verify $(migrate_vpl)
699 ifeq ($(CONFIG_TPL_BUILD),y)
700 fdtgrep_props := -b bootph-all -b bootph-pre-sram $(migrate_tpl)
702 fdtgrep_props := -b bootph-all -b bootph-pre-ram $(migrate_spl)
706 # This rule produces the .dtb for an SPL build.
708 # The first fdtgrep keeps nodes with the above properties (with -u ensuring that
709 # the properties are implied in all parents of a matching node). The root node
710 # is always included, along with /chosen and /config nodes. Referenced aliases
711 # (i.e. properties in /aliases which point to an incldued node) are also
714 # The second fdtgrep removes all bootph properties along with unused strings
715 # and any properties in CONFIG_OF_SPL_REMOVE_PROPS
716 quiet_cmd_fdtgrep = FDTGREP $@
717 cmd_fdtgrep = $(objtree)/tools/fdtgrep $(fdtgrep_props) -u -RT $< \
718 -n /chosen -n /config -O dtb | \
719 $(objtree)/tools/fdtgrep -r -O dtb - -o $@ \
720 -P bootph-all -P bootph-pre-ram -P bootph-pre-sram \
721 -P bootph-verify -P bootph-some-ram \
723 $(addprefix -P ,$(subst $\",,$(CONFIG_OF_SPL_REMOVE_PROPS)))
726 # ---------------------------------------------------------------------------
727 # Pass the original device tree file through fdtgrep. This removes various
728 # unused properties. The output is typically a smaller device tree file.
729 quiet_cmd_fdt_rm_props = FDTGREP $@
730 cmd_fdt_rm_props = cat $< | $(objtree)/tools/fdtgrep -r -O dtb - -o $@ \
731 $(addprefix -P ,$(subst $\",,$(CONFIG_OF_REMOVE_PROPS)))
734 # ---------------------------------------------------------------------------
736 # Default sed regexp - multiline due to syntax constraints
738 "s:[[:space:]]*\.ascii[[:space:]]*\"\(.*\)\":\1:; \
739 /^->/{s:->#\(.*\):/* \1 */:; \
740 s:^->\([^ ]*\) [\$$#]*\([-0-9]*\) \(.*\):#define \1 \2 /* \3 */:; \
741 s:^->\([^ ]*\) [\$$#]*\([^ ]*\) \(.*\):#define \1 \2 /* \3 */:; \
745 # Use filechk to avoid rebuilds when a header changes, but the resulting file
747 define filechk_offsets
752 echo " * DO NOT MODIFY."; \
754 echo " * This file was generated by Kbuild"; \
757 sed -ne $(sed-offsets); \