1# SPDX-License-Identifier: GPL-2.0
2# Backward compatibility
3asflags-y  += $(EXTRA_AFLAGS)
4ccflags-y  += $(EXTRA_CFLAGS)
5cppflags-y += $(EXTRA_CPPFLAGS)
6ldflags-y  += $(EXTRA_LDFLAGS)
7
8#
9# flags that take effect in sub directories
10export KBUILD_SUBDIR_ASFLAGS := $(KBUILD_SUBDIR_ASFLAGS) $(subdir-asflags-y)
11export KBUILD_SUBDIR_CCFLAGS := $(KBUILD_SUBDIR_CCFLAGS) $(subdir-ccflags-y)
12
13# Figure out what we need to build from the various variables
14# ===========================================================================
15
16# When an object is listed to be built compiled-in and modular,
17# only build the compiled-in version
18
19obj-m := $(filter-out $(obj-y),$(obj-m))
20
21# Libraries are always collected in one lib file.
22# Filter out objects already built-in
23
24lib-y := $(filter-out $(obj-y), $(sort $(lib-y) $(lib-m)))
25
26
27# Handle objects in subdirs
28# ---------------------------------------------------------------------------
29# o if we encounter foo/ in $(obj-y), replace it by foo/built-in.o
30#   and add the directory to the list of dirs to descend into: $(subdir-y)
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)
33
34# Determine modorder.
35# Unfortunately, we don't have information about ordering between -y
36# and -m subdirs.  Just put -y's first.
37modorder	:= $(patsubst %/,%/modules.order, $(filter %/, $(obj-y)) $(obj-m:.o=.ko))
38
39__subdir-y	:= $(patsubst %/,%,$(filter %/, $(obj-y)))
40subdir-y	+= $(__subdir-y)
41__subdir-m	:= $(patsubst %/,%,$(filter %/, $(obj-m)))
42subdir-m	+= $(__subdir-m)
43obj-y		:= $(patsubst %/, %/built-in.o, $(obj-y))
44obj-m		:= $(filter-out %/, $(obj-m))
45
46# Subdirectories we need to descend into
47
48subdir-ym	:= $(sort $(subdir-y) $(subdir-m))
49
50# if $(foo-objs) exists, foo.o is a composite object
51multi-used-y := $(sort $(foreach m,$(obj-y), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y))), $(m))))
52multi-used-m := $(sort $(foreach m,$(obj-m), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y))), $(m))))
53multi-used   := $(multi-used-y) $(multi-used-m)
54single-used-m := $(sort $(filter-out $(multi-used-m),$(obj-m)))
55
56# Build list of the parts of our composite objects, our composite
57# objects depend on those (obviously)
58multi-objs-y := $(foreach m, $(multi-used-y), $($(m:.o=-objs)) $($(m:.o=-y)))
59multi-objs-m := $(foreach m, $(multi-used-m), $($(m:.o=-objs)) $($(m:.o=-y)))
60multi-objs   := $(multi-objs-y) $(multi-objs-m)
61
62# $(subdir-obj-y) is the list of objects in $(obj-y) which uses dir/ to
63# tell kbuild to descend
64subdir-obj-y := $(filter %/built-in.o, $(obj-y))
65
66# $(obj-dirs) is a list of directories that contain object files
67obj-dirs := $(dir $(multi-objs) $(obj-y))
68
69# Replace multi-part objects by their individual parts, look at local dir only
70real-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)
71real-objs-m := $(foreach m, $(obj-m), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y))),$($(m:.o=-objs)) $($(m:.o=-y)),$(m)))
72
73# Add subdir path
74
75extra-y		:= $(addprefix $(obj)/,$(extra-y))
76always		:= $(addprefix $(obj)/,$(always))
77targets		:= $(addprefix $(obj)/,$(targets))
78modorder	:= $(addprefix $(obj)/,$(modorder))
79obj-y		:= $(addprefix $(obj)/,$(obj-y))
80obj-m		:= $(addprefix $(obj)/,$(obj-m))
81lib-y		:= $(addprefix $(obj)/,$(lib-y))
82subdir-obj-y	:= $(addprefix $(obj)/,$(subdir-obj-y))
83real-objs-y	:= $(addprefix $(obj)/,$(real-objs-y))
84real-objs-m	:= $(addprefix $(obj)/,$(real-objs-m))
85single-used-m	:= $(addprefix $(obj)/,$(single-used-m))
86multi-used-y	:= $(addprefix $(obj)/,$(multi-used-y))
87multi-used-m	:= $(addprefix $(obj)/,$(multi-used-m))
88multi-objs-y	:= $(addprefix $(obj)/,$(multi-objs-y))
89multi-objs-m	:= $(addprefix $(obj)/,$(multi-objs-m))
90subdir-ym	:= $(addprefix $(obj)/,$(subdir-ym))
91obj-dirs	:= $(addprefix $(obj)/,$(obj-dirs))
92
93# These flags are needed for modversions and compiling, so we define them here
94# already
95# $(modname_flags) #defines KBUILD_MODNAME as the name of the module it will
96# end up in (or would, if it gets compiled in)
97# Note: Files that end up in two or more modules are compiled without the
98#       KBUILD_MODNAME definition. The reason is that any made-up name would
99#       differ in different configs.
100name-fix = $(subst $(comma),_,$(subst -,_,$1))
101basename_flags = -D"KBUILD_BASENAME=KBUILD_STR($(call name-fix,$(basetarget)))"
102modname_flags  = $(if $(filter 1,$(words $(modname))),\
103                 -D"KBUILD_MODNAME=KBUILD_STR($(call name-fix,$(modname)))")
104
105orig_c_flags   = $(KBUILD_CPPFLAGS) $(KBUILD_CFLAGS) $(KBUILD_SUBDIR_CCFLAGS) \
106                 $(ccflags-y) $(CFLAGS_$(basetarget).o)
107_c_flags       = $(filter-out $(CFLAGS_REMOVE_$(basetarget).o), $(orig_c_flags))
108orig_a_flags   = $(KBUILD_CPPFLAGS) $(KBUILD_AFLAGS) $(KBUILD_SUBDIR_ASFLAGS) \
109                 $(asflags-y) $(AFLAGS_$(basetarget).o)
110_a_flags       = $(filter-out $(AFLAGS_REMOVE_$(basetarget).o), $(orig_a_flags))
111_cpp_flags     = $(KBUILD_CPPFLAGS) $(cppflags-y) $(CPPFLAGS_$(@F))
112
113#
114# Enable gcov profiling flags for a file, directory or for all files depending
115# on variables GCOV_PROFILE_obj.o, GCOV_PROFILE and CONFIG_GCOV_PROFILE_ALL
116# (in this order)
117#
118ifeq ($(CONFIG_GCOV_KERNEL),y)
119_c_flags += $(if $(patsubst n%,, \
120		$(GCOV_PROFILE_$(basetarget).o)$(GCOV_PROFILE)$(CONFIG_GCOV_PROFILE_ALL)), \
121		$(CFLAGS_GCOV))
122endif
123
124#
125# Enable address sanitizer flags for kernel except some files or directories
126# we don't want to check (depends on variables KASAN_SANITIZE_obj.o, KASAN_SANITIZE)
127#
128ifeq ($(CONFIG_KASAN),y)
129_c_flags += $(if $(patsubst n%,, \
130		$(KASAN_SANITIZE_$(basetarget).o)$(KASAN_SANITIZE)y), \
131		$(CFLAGS_KASAN))
132endif
133
134# If building the kernel in a separate objtree expand all occurrences
135# of -Idir to -I$(srctree)/dir except for absolute paths (starting with '/').
136
137ifeq ($(KBUILD_SRC),)
138__c_flags	= $(_c_flags)
139__a_flags	= $(_a_flags)
140__cpp_flags     = $(_cpp_flags)
141else
142
143# -I$(obj) locates generated .h files
144# $(call addtree,-I$(obj)) locates .h files in srctree, from generated .c files
145#   and locates generated .h files
146# FIXME: Replace both with specific CFLAGS* statements in the makefiles
147__c_flags	= $(call addtree,-I$(obj)) $(call flags,_c_flags)
148__a_flags	=                          $(call flags,_a_flags)
149__cpp_flags     =                          $(call flags,_cpp_flags)
150endif
151
152# Modified for U-Boot: LINUXINCLUDE -> UBOOTINCLUDE
153c_flags        = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(UBOOTINCLUDE)     \
154		 $(__c_flags) $(modkern_cflags)                           \
155		 -D"KBUILD_STR(s)=\#s" $(basename_flags) $(modname_flags)
156
157a_flags        = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(UBOOTINCLUDE)     \
158		 $(__a_flags) $(modkern_aflags)
159
160cpp_flags      = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(UBOOTINCLUDE)     \
161		 $(__cpp_flags)
162
163ld_flags       = $(LDFLAGS) $(ldflags-y)
164
165# Try these files in order to find the U-Boot-specific .dtsi include file
166u_boot_dtsi_options = $(strip $(wildcard $(dir $<)$(basename $(notdir $<))-u-boot.dtsi) \
167	$(wildcard $(dir $<)$(subst $\",,$(CONFIG_SYS_SOC))-u-boot.dtsi) \
168	$(wildcard $(dir $<)$(subst $\",,$(CONFIG_SYS_CPU))-u-boot.dtsi) \
169	$(wildcard $(dir $<)$(subst $\",,$(CONFIG_SYS_VENDOR))-u-boot.dtsi) \
170	$(wildcard $(dir $<)u-boot.dtsi))
171
172u_boot_dtsi_options_raw = $(warning Automatic .dtsi inclusion: options: \
173	$(dir $<)$(basename $(notdir $<))-u-boot.dtsi \
174	$(dir $<)$(subst $\",,$(CONFIG_SYS_SOC))-u-boot.dtsi \
175	$(dir $<)$(subst $\",,$(CONFIG_SYS_CPU))-u-boot.dtsi \
176	$(dir $<)$(subst $\",,$(CONFIG_SYS_VENDOR))-u-boot.dtsi \
177	$(dir $<)u-boot.dtsi ... \
178	found: $(if $(u_boot_dtsi_options),"$(u_boot_dtsi_options)",nothing!))
179
180# Uncomment for debugging
181# This shows all the files that were considered and the one that we chose.
182# u_boot_dtsi_options_debug = $(u_boot_dtsi_options_raw)
183
184# We use the first match
185u_boot_dtsi = $(strip $(u_boot_dtsi_options_debug) \
186	$(notdir $(firstword $(u_boot_dtsi_options))))
187
188# Modified for U-Boot
189dtc_cpp_flags  = -Wp,-MD,$(depfile).pre.tmp -nostdinc                    \
190		 -I$(srctree)/arch/$(ARCH)/dts                           \
191		 -I$(srctree)/arch/$(ARCH)/dts/include                   \
192		 -Iinclude                                               \
193		 -I$(srctree)/include                                    \
194		 -I$(srctree)/arch/$(ARCH)/include                       \
195		 -include $(srctree)/include/linux/kconfig.h             \
196		 -D__ASSEMBLY__                                          \
197		 -undef -D__DTS__
198
199# Finds the multi-part object the current object will be linked into
200modname-multi = $(sort $(foreach m,$(multi-used),\
201		$(if $(filter $(subst $(obj)/,,$*.o), $($(m:.o=-objs)) $($(m:.o=-y))),$(m:.o=))))
202
203# Useful for describing the dependency of composite objects
204# Usage:
205#   $(call multi_depend, multi_used_targets, suffix_to_remove, suffix_to_add)
206define multi_depend
207$(foreach m, $(notdir $1), \
208	$(eval $(obj)/$m: \
209	$(addprefix $(obj)/, $(foreach s, $3, $($(m:%$(strip $2)=%$(s)))))))
210endef
211
212# LEX
213# ---------------------------------------------------------------------------
214quiet_cmd_flex = LEX     $@
215      cmd_flex = $(LEX) -o$@ -L $<
216
217.PRECIOUS: $(obj)/%.lex.c
218$(obj)/%.lex.c: $(src)/%.l FORCE
219	$(call if_changed,flex)
220
221# YACC
222# ---------------------------------------------------------------------------
223quiet_cmd_bison = YACC    $@
224      cmd_bison = $(YACC) -o$@ -t -l $<
225
226.PRECIOUS: $(obj)/%.tab.c
227$(obj)/%.tab.c: $(src)/%.y FORCE
228	$(call if_changed,bison)
229
230quiet_cmd_bison_h = YACC    $@
231      cmd_bison_h = $(YACC) -o/dev/null --defines=$@ -t -l $<
232
233.PRECIOUS: $(obj)/%.tab.h
234$(obj)/%.tab.h: $(src)/%.y FORCE
235	$(call if_changed,bison_h)
236
237# Shipped files
238# ===========================================================================
239
240quiet_cmd_shipped = SHIPPED $@
241cmd_shipped = cat $< > $@
242
243$(obj)/%: $(src)/%_shipped
244	$(call cmd,shipped)
245
246# Commands useful for building a boot image
247# ===========================================================================
248#
249#	Use as following:
250#
251#	target: source(s) FORCE
252#		$(if_changed,ld/objcopy/gzip)
253#
254#	and add target to extra-y so that we know we have to
255#	read in the saved command line
256
257# Linking
258# ---------------------------------------------------------------------------
259
260quiet_cmd_ld = LD      $@
261cmd_ld = $(LD) $(LDFLAGS) $(ldflags-y) $(LDFLAGS_$(@F)) \
262	       $(filter-out FORCE,$^) -o $@
263
264# Objcopy
265# ---------------------------------------------------------------------------
266
267quiet_cmd_objcopy = OBJCOPY $@
268cmd_objcopy = $(OBJCOPY) $(OBJCOPYFLAGS) $(OBJCOPYFLAGS_$(@F)) $< $@
269
270# Gzip
271# ---------------------------------------------------------------------------
272
273quiet_cmd_gzip = GZIP    $@
274cmd_gzip = (cat $(filter-out FORCE,$^) | gzip -n -f -9 > $@) || \
275	(rm -f $@ ; false)
276
277# DTC
278# ---------------------------------------------------------------------------
279
280# Generate an assembly file to wrap the output of the device tree compiler
281quiet_cmd_dt_S_dtb= DTB     $@
282# Modified for U-Boot
283cmd_dt_S_dtb=						\
284(							\
285	echo '.section .dtb.init.rodata,"a"';		\
286	echo '.balign 16';				\
287	echo '.global __dtb_$(subst -,_,$(*F))_begin';	\
288	echo '__dtb_$(subst -,_,$(*F))_begin:';		\
289	echo '.incbin "$<" ';				\
290	echo '__dtb_$(subst -,_,$(*F))_end:';		\
291	echo '.global __dtb_$(subst -,_,$(*F))_end';	\
292	echo '.balign 16';				\
293) > $@
294
295$(obj)/%.dtb.S: $(obj)/%.dtb
296	$(call cmd,dt_S_dtb)
297
298quiet_cmd_dtc = DTC     $@
299# Modified for U-Boot
300# Bring in any U-Boot-specific include at the end of the file
301cmd_dtc = mkdir -p $(dir ${dtc-tmp}) ; \
302	(cat $<; $(if $(u_boot_dtsi),echo '$(pound)include "$(u_boot_dtsi)"')) > $(pre-tmp); \
303	$(CPP) $(dtc_cpp_flags) -x assembler-with-cpp -o $(dtc-tmp) $(pre-tmp) ; \
304	$(DTC) -O dtb -o $@ -b 0 \
305		-i $(dir $<) $(DTC_FLAGS) \
306		-d $(depfile).dtc.tmp $(dtc-tmp) ; \
307	cat $(depfile).pre.tmp $(depfile).dtc.tmp > $(depfile)
308
309$(obj)/%.dtb: $(src)/%.dts FORCE
310	$(call if_changed_dep,dtc)
311
312pre-tmp = $(subst $(comma),_,$(dot-target).pre.tmp)
313dtc-tmp = $(subst $(comma),_,$(dot-target).dts.tmp)
314
315# DTCO
316# ---------------------------------------------------------------------------
317
318quiet_cmd_dtco = DTCO    $@
319# Rule for objects only; does not put specific u-boot include at the end
320# No generation of assembly file either
321# Modified for U-Boot
322cmd_dtco = mkdir -p $(dir ${dtc-tmp}) ; \
323	$(CPP) $(dtc_cpp_flags) -x assembler-with-cpp -o $(dtc-tmp) - ; \
324	$(DTC) -@ -O dtb -o $@ -b 0 \
325		-i $(dir $<) $(DTC_FLAGS) \
326		-d $(depfile).dtc.tmp $(dtc-tmp) ; \
327	cat $(depfile).pre.tmp $(depfile).dtc.tmp > $(depfile)
328
329$(obj)/%.dtbo: $(src)/%.dts FORCE
330	$(call if_changed_dep,dtco)
331
332# Fonts
333# ---------------------------------------------------------------------------
334
335# Generate an assembly file to wrap the font data
336quiet_cmd_S_ttf= TTF     $@
337# Modified for U-Boot
338cmd_S_ttf=						\
339(							\
340	echo '.section .rodata.ttf.init,"a"';		\
341	echo '.balign 16';				\
342	echo '.global __ttf_$(*F)_begin';		\
343	echo '__ttf_$(*F)_begin:';			\
344	echo '.incbin "$<" ';				\
345	echo '__ttf_$(*F)_end:';			\
346	echo '.global __ttf_$(*F)_end';			\
347	echo '.balign 16';				\
348) > $@
349
350$(obj)/%.S: $(src)/%.ttf
351	$(call cmd,S_ttf)
352
353# EFI applications
354# A Makefile target *.efi is built as EFI application.
355# A Makefile target *_efi.S wraps *.efi as built-in EFI application.
356# ---------------------------------------------------------------------------
357
358# Generate an assembly file to wrap the EFI app
359cmd_S_efi=					\
360(						\
361	echo '.section .rodata.$*.init,"a"';	\
362	echo '.balign 16';			\
363	echo '.global __efi_$*_begin';		\
364	echo '__efi_$*_begin:';			\
365	echo '.incbin "$<" ';			\
366	echo '__efi_$*_end:';			\
367	echo '.global __efi_$*_end';		\
368	echo '.balign 16';			\
369) > $@
370
371$(obj)/%_efi.S: $(obj)/%.efi
372	$(call cmd,S_efi)
373
374quiet_cmd_efi_objcopy = OBJCOPY $@
375cmd_efi_objcopy = $(OBJCOPY) -j .header -j .text -j .sdata -j .data -j \
376		.dynamic -j .dynsym  -j .rel* -j .rela* -j .reloc \
377		$(if $(EFI_TARGET),$(EFI_TARGET),-O binary) $^ $@
378
379$(obj)/%.efi: $(obj)/%_efi.so
380	$(call cmd,efi_objcopy)
381
382quiet_cmd_efi_ld = LD      $@
383cmd_efi_ld = $(LD) -nostdlib -znocombreloc -T $(EFI_LDS_PATH) -shared \
384		-Bsymbolic -s $^ -o $@
385
386EFI_LDS_PATH = $(srctree)/arch/$(ARCH)/lib/$(EFI_LDS)
387
388$(obj)/efi_crt0.o: $(srctree)/arch/$(ARCH)/lib/$(EFI_CRT0:.o=.S)
389	$(call if_changed_dep,as_o_S)
390
391$(obj)/efi_reloc.o: $(srctree)/arch/$(ARCH)/lib/$(EFI_RELOC:.o=.c) $(recordmcount_source) FORCE
392	$(call cmd,force_checksrc)
393	$(call if_changed_rule,cc_o_c)
394
395$(obj)/%_efi.so: $(obj)/%.o $(obj)/efi_crt0.o $(obj)/efi_reloc.o
396	$(call cmd,efi_ld)
397
398# ACPI
399# ---------------------------------------------------------------------------
400quiet_cmd_acpi_c_asl= ASL     $<
401cmd_acpi_c_asl=         \
402	$(CPP) -x assembler-with-cpp -D__ASSEMBLY__ -P $(UBOOTINCLUDE) -o $<.tmp $<; \
403	iasl -p $< -tc $<.tmp $(if $(KBUILD_VERBOSE:1=), >/dev/null) && \
404	mv $(patsubst %.asl,%.hex,$<) $@
405
406$(obj)/dsdt.c:    $(src)/dsdt.asl
407	$(call cmd,acpi_c_asl)
408	$(Q)sed -i -e "s,dsdt_aml_code,AmlCode," $@
409
410# Bzip2
411# ---------------------------------------------------------------------------
412
413# Bzip2 and LZMA do not include size in file... so we have to fake that;
414# append the size as a 32-bit littleendian number as gzip does.
415size_append = printf $(shell						\
416dec_size=0;								\
417for F in $1; do								\
418	fsize=$$(stat -c "%s" $$F);					\
419	dec_size=$$(expr $$dec_size + $$fsize);				\
420done;									\
421printf "%08x\n" $$dec_size |						\
422	sed 's/\(..\)/\1 /g' | {					\
423		read ch0 ch1 ch2 ch3;					\
424		for ch in $$ch3 $$ch2 $$ch1 $$ch0; do			\
425			printf '%s%03o' '\\' $$((0x$$ch)); 		\
426		done;							\
427	}								\
428)
429
430quiet_cmd_bzip2 = BZIP2   $@
431cmd_bzip2 = (cat $(filter-out FORCE,$^) | \
432	bzip2 -9 && $(call size_append, $(filter-out FORCE,$^))) > $@ || \
433	(rm -f $@ ; false)
434
435# Lzma
436# ---------------------------------------------------------------------------
437
438quiet_cmd_lzma = LZMA    $@
439cmd_lzma = (cat $(filter-out FORCE,$^) | \
440	lzma -9 && $(call size_append, $(filter-out FORCE,$^))) > $@ || \
441	(rm -f $@ ; false)
442
443quiet_cmd_lzo = LZO     $@
444cmd_lzo = (cat $(filter-out FORCE,$^) | \
445	lzop -9 && $(call size_append, $(filter-out FORCE,$^))) > $@ || \
446	(rm -f $@ ; false)
447
448quiet_cmd_lz4 = LZ4     $@
449cmd_lz4 = (cat $(filter-out FORCE,$^) | \
450	lz4c -l -c1 stdin stdout && $(call size_append, $(filter-out FORCE,$^))) > $@ || \
451	(rm -f $@ ; false)
452
453# U-Boot mkimage
454# ---------------------------------------------------------------------------
455
456MKIMAGE := $(srctree)/scripts/mkuboot.sh
457
458# SRCARCH just happens to match slightly more than ARCH (on sparc), so reduces
459# the number of overrides in arch makefiles
460UIMAGE_ARCH ?= $(SRCARCH)
461UIMAGE_COMPRESSION ?= $(if $(2),$(2),none)
462UIMAGE_OPTS-y ?=
463UIMAGE_TYPE ?= kernel
464UIMAGE_LOADADDR ?= arch_must_set_this
465UIMAGE_ENTRYADDR ?= $(UIMAGE_LOADADDR)
466UIMAGE_NAME ?= 'Linux-$(KERNELRELEASE)'
467UIMAGE_IN ?= $<
468UIMAGE_OUT ?= $@
469
470quiet_cmd_uimage = UIMAGE  $(UIMAGE_OUT)
471      cmd_uimage = $(CONFIG_SHELL) $(MKIMAGE) -A $(UIMAGE_ARCH) -O linux \
472			-C $(UIMAGE_COMPRESSION) $(UIMAGE_OPTS-y) \
473			-T $(UIMAGE_TYPE) \
474			-a $(UIMAGE_LOADADDR) -e $(UIMAGE_ENTRYADDR) \
475			-n $(UIMAGE_NAME) -d $(UIMAGE_IN) $(UIMAGE_OUT)
476
477# XZ
478# ---------------------------------------------------------------------------
479# Use xzkern to compress the kernel image and xzmisc to compress other things.
480#
481# xzkern uses a big LZMA2 dictionary since it doesn't increase memory usage
482# of the kernel decompressor. A BCJ filter is used if it is available for
483# the target architecture. xzkern also appends uncompressed size of the data
484# using size_append. The .xz format has the size information available at
485# the end of the file too, but it's in more complex format and it's good to
486# avoid changing the part of the boot code that reads the uncompressed size.
487# Note that the bytes added by size_append will make the xz tool think that
488# the file is corrupt. This is expected.
489#
490# xzmisc doesn't use size_append, so it can be used to create normal .xz
491# files. xzmisc uses smaller LZMA2 dictionary than xzkern, because a very
492# big dictionary would increase the memory usage too much in the multi-call
493# decompression mode. A BCJ filter isn't used either.
494quiet_cmd_xzkern = XZKERN  $@
495cmd_xzkern = (cat $(filter-out FORCE,$^) | \
496	sh $(srctree)/scripts/xz_wrap.sh && \
497	$(call size_append, $(filter-out FORCE,$^))) > $@ || \
498	(rm -f $@ ; false)
499
500quiet_cmd_xzmisc = XZMISC  $@
501cmd_xzmisc = (cat $(filter-out FORCE,$^) | \
502	xz --check=crc32 --lzma2=dict=1MiB) > $@ || \
503	(rm -f $@ ; false)
504
505# Additional commands for U-Boot
506#
507# mkimage
508# ---------------------------------------------------------------------------
509MKIMAGEOUTPUT ?= /dev/null
510quiet_cmd_mkimage = MKIMAGE $@
511cmd_mkimage = $(objtree)/tools/mkimage $(MKIMAGEFLAGS_$(@F)) -d $< $@ \
512	>$(MKIMAGEOUTPUT) $(if $(KBUILD_VERBOSE:0=), && cat $(MKIMAGEOUTPUT))
513
514# fdtgrep
515# ---------------------------------------------------------------------------
516# Pass the original device tree file through fdtgrep twice. The first pass
517# removes any unwanted nodes (i.e. those which don't have the
518# 'u-boot,dm-pre-reloc' property and thus are not needed by SPL. The second
519# pass removes various unused properties from the remaining nodes.
520# The output is typically a much smaller device tree file.
521ifeq ($(CONFIG_TPL_BUILD),y)
522fdtgrep_props := -b u-boot,dm-pre-reloc -b u-boot,dm-tpl
523else
524fdtgrep_props := -b u-boot,dm-pre-reloc -b u-boot,dm-spl
525endif
526quiet_cmd_fdtgrep = FDTGREP $@
527      cmd_fdtgrep = $(objtree)/tools/fdtgrep $(fdtgrep_props) -RT $< \
528		-n /chosen -n /config -O dtb | \
529	$(objtree)/tools/fdtgrep -r -O dtb - -o $@ \
530		$(addprefix -P ,$(subst $\",,$(CONFIG_OF_SPL_REMOVE_PROPS)))
531