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)))
60
61# $(subdir-obj-y) is the list of objects in $(obj-y) which uses dir/ to
62# tell kbuild to descend
63subdir-obj-y := $(filter %/built-in.o, $(obj-y))
64
65# Replace multi-part objects by their individual parts, look at local dir only
66real-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)
67real-objs-m := $(foreach m, $(obj-m), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y))),$($(m:.o=-objs)) $($(m:.o=-y)),$(m)))
68
69# Add subdir path
70
71extra-y		:= $(addprefix $(obj)/,$(extra-y))
72always		:= $(addprefix $(obj)/,$(always))
73targets		:= $(addprefix $(obj)/,$(targets))
74modorder	:= $(addprefix $(obj)/,$(modorder))
75obj-y		:= $(addprefix $(obj)/,$(obj-y))
76obj-m		:= $(addprefix $(obj)/,$(obj-m))
77lib-y		:= $(addprefix $(obj)/,$(lib-y))
78subdir-obj-y	:= $(addprefix $(obj)/,$(subdir-obj-y))
79real-objs-y	:= $(addprefix $(obj)/,$(real-objs-y))
80real-objs-m	:= $(addprefix $(obj)/,$(real-objs-m))
81single-used-m	:= $(addprefix $(obj)/,$(single-used-m))
82multi-used-y	:= $(addprefix $(obj)/,$(multi-used-y))
83multi-used-m	:= $(addprefix $(obj)/,$(multi-used-m))
84multi-objs-y	:= $(addprefix $(obj)/,$(multi-objs-y))
85multi-objs-m	:= $(addprefix $(obj)/,$(multi-objs-m))
86subdir-ym	:= $(addprefix $(obj)/,$(subdir-ym))
87
88# These flags are needed for modversions and compiling, so we define them here
89# already
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.
95name-fix = $(squote)$(quote)$(subst $(comma),_,$(subst -,_,$1))$(quote)$(squote)
96basename_flags = -DKBUILD_BASENAME=$(call name-fix,$(basetarget))
97modname_flags  = $(if $(filter 1,$(words $(modname))),\
98                 -DKBUILD_MODNAME=$(call name-fix,$(modname)))
99
100orig_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))
103orig_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))
107
108#
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
111# (in this order)
112#
113ifeq ($(CONFIG_GCOV_KERNEL),y)
114_c_flags += $(if $(patsubst n%,, \
115		$(GCOV_PROFILE_$(basetarget).o)$(GCOV_PROFILE)$(CONFIG_GCOV_PROFILE_ALL)), \
116		$(CFLAGS_GCOV))
117endif
118
119#
120# Enable address sanitizer flags for kernel except some files or directories
121# we don't want to check (depends on variables KASAN_SANITIZE_obj.o, KASAN_SANITIZE)
122#
123ifeq ($(CONFIG_KASAN),y)
124_c_flags += $(if $(patsubst n%,, \
125		$(KASAN_SANITIZE_$(basetarget).o)$(KASAN_SANITIZE)y), \
126		$(CFLAGS_KASAN))
127endif
128
129# If building the kernel in a separate objtree expand all occurrences
130# of -Idir to -I$(srctree)/dir except for absolute paths (starting with '/').
131
132ifeq ($(KBUILD_SRC),)
133__c_flags	= $(_c_flags)
134__a_flags	= $(_a_flags)
135__cpp_flags     = $(_cpp_flags)
136else
137
138# -I$(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     = $(call flags,_cpp_flags)
146endif
147
148# Modified for U-Boot: LINUXINCLUDE -> UBOOTINCLUDE
149c_flags        = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(UBOOTINCLUDE)     \
150		 $(__c_flags) $(modkern_cflags)                           \
151		 $(basename_flags) $(modname_flags)
152
153a_flags        = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(UBOOTINCLUDE)     \
154		 $(__a_flags) $(modkern_aflags)
155
156cpp_flags      = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(UBOOTINCLUDE)     \
157		 $(__cpp_flags)
158
159ld_flags       = $(KBUILD_LDFLAGS) $(ldflags-y) $(LDFLAGS_$(@F))
160
161# Try these files in order to find the U-Boot-specific .dtsi include file
162u_boot_dtsi_loc = $(srctree)/arch/$(ARCH)/dts/
163
164u_boot_dtsi_options = $(strip $(wildcard $(u_boot_dtsi_loc)$(basename $(notdir $<))-u-boot.dtsi) \
165	$(wildcard $(u_boot_dtsi_loc)$(subst $\",,$(CONFIG_SYS_SOC))-u-boot.dtsi) \
166	$(wildcard $(u_boot_dtsi_loc)$(subst $\",,$(CONFIG_SYS_CPU))-u-boot.dtsi) \
167	$(wildcard $(u_boot_dtsi_loc)$(subst $\",,$(CONFIG_SYS_VENDOR))-u-boot.dtsi) \
168	$(wildcard $(u_boot_dtsi_loc)u-boot.dtsi))
169
170u_boot_dtsi_options_raw = $(warning Automatic .dtsi inclusion: options: \
171	$(u_boot_dtsi_loc)$(basename $(notdir $<))-u-boot.dtsi \
172	$(u_boot_dtsi_loc)$(subst $\",,$(CONFIG_SYS_SOC))-u-boot.dtsi \
173	$(u_boot_dtsi_loc)$(subst $\",,$(CONFIG_SYS_CPU))-u-boot.dtsi \
174	$(u_boot_dtsi_loc)$(subst $\",,$(CONFIG_SYS_VENDOR))-u-boot.dtsi \
175	$(u_boot_dtsi_loc)u-boot.dtsi ... \
176	found: $(if $(u_boot_dtsi_options),"$(u_boot_dtsi_options)",nothing!))
177
178# Uncomment for debugging
179# This shows all the files that were considered and the one that we chose.
180ifdef DEVICE_TREE_DEBUG
181u_boot_dtsi_options_debug = $(warning $(u_boot_dtsi_options_raw))
182endif
183
184# We use the first match to be included
185dtsi_include_list = $(strip $(u_boot_dtsi_options_debug) \
186	$(notdir $(firstword $(u_boot_dtsi_options))))
187
188# The CONFIG_DEVICE_TREE_INCLUDES also need to be included
189dtsi_include_list += $(CONFIG_DEVICE_TREE_INCLUDES)
190
191# Modified for U-Boot
192upstream_dtsi_include = $(addprefix -I, $(srctree)/dts/upstream/src/ \
193	$(sort $(dir $(wildcard $(srctree)/dts/upstream/src/$(ARCH)/*/*))) \
194	$(if (CONFIG_ARM64), \
195		 $(sort $(dir $(wildcard $(srctree)/dts/upstream/src/arm64/*/*)))))
196dtc_cpp_flags  = -Wp,-MD,$(depfile).pre.tmp -nostdinc                    \
197		 $(UBOOTINCLUDE)                                         \
198		 -I$(dir $<)                                             \
199		 -I$(u_boot_dtsi_loc)                                     \
200		 -I$(srctree)/arch/$(ARCH)/dts/include                   \
201		 -I$(srctree)/include                                    \
202		 $(upstream_dtsi_include)                                \
203		 -D__ASSEMBLY__                                          \
204		 -undef -D__DTS__
205
206# Finds the multi-part object the current object will be linked into
207modname-multi = $(sort $(foreach m,$(multi-used),\
208		$(if $(filter $(subst $(obj)/,,$*.o), $($(m:.o=-objs)) $($(m:.o=-y))),$(m:.o=))))
209
210# Useful for describing the dependency of composite objects
211# Usage:
212#   $(call multi_depend, multi_used_targets, suffix_to_remove, suffix_to_add)
213define multi_depend
214$(foreach m, $(notdir $1), \
215	$(eval $(obj)/$m: \
216	$(addprefix $(obj)/, $(foreach s, $3, $($(m:%$(strip $2)=%$(s)))))))
217endef
218
219# LEX
220# ---------------------------------------------------------------------------
221quiet_cmd_flex = LEX     $@
222      cmd_flex = $(LEX) -o$@ -L $<
223
224$(obj)/%.lex.c: $(src)/%.l FORCE
225	$(call if_changed,flex)
226
227# YACC
228# ---------------------------------------------------------------------------
229quiet_cmd_bison = YACC    $@
230      cmd_bison = $(YACC) -o$@ -t -l $<
231
232$(obj)/%.tab.c: $(src)/%.y FORCE
233	$(call if_changed,bison)
234
235quiet_cmd_bison_h = YACC    $@
236      cmd_bison_h = $(YACC) -o/dev/null --defines=$@ -t -l $<
237
238$(obj)/%.tab.h: $(src)/%.y FORCE
239	$(call if_changed,bison_h)
240
241# Shipped files
242# ===========================================================================
243
244quiet_cmd_shipped = SHIPPED $@
245cmd_shipped = cat $< > $@
246
247$(obj)/%: $(src)/%_shipped
248	$(call cmd,shipped)
249
250# Commands useful for building a boot image
251# ===========================================================================
252#
253#	Use as following:
254#
255#	target: source(s) FORCE
256#		$(if_changed,ld/objcopy/gzip)
257#
258#	and add target to extra-y so that we know we have to
259#	read in the saved command line
260
261# Linking
262# ---------------------------------------------------------------------------
263
264quiet_cmd_ld = LD      $@
265cmd_ld = $(LD) $(ld_flags) $(filter-out FORCE,$^) -o $@
266
267# Objcopy
268# ---------------------------------------------------------------------------
269
270quiet_cmd_objcopy = OBJCOPY $@
271cmd_objcopy = $(OBJCOPY) $(OBJCOPYFLAGS) $(OBJCOPYFLAGS_$(@F)) $< $@
272
273# Gzip
274# ---------------------------------------------------------------------------
275
276quiet_cmd_gzip = GZIP    $@
277cmd_gzip = (cat $(filter-out FORCE,$^) | gzip -n -f -9 > $@) || \
278	(rm -f $@ ; false)
279
280# DTC
281# ---------------------------------------------------------------------------
282
283# Disable noisy checks by default
284ifeq ($(findstring 1,$(KBUILD_ENABLE_EXTRA_GCC_CHECKS)),)
285DTC_FLAGS += -Wno-unit_address_vs_reg \
286	-Wno-unit_address_format \
287	-Wno-avoid_unnecessary_addr_size \
288	-Wno-alias_paths \
289	-Wno-graph_child_address \
290	-Wno-graph_port \
291	-Wno-unique_unit_address \
292	-Wno-simple_bus_reg \
293	-Wno-pci_device_reg
294
295# U-Boot specific disables
296DTC_FLAGS += -Wno-pci_bridge \
297        -Wno-pci_device_bus_num
298endif
299
300ifneq ($(findstring 2,$(KBUILD_ENABLE_EXTRA_GCC_CHECKS)),)
301DTC_FLAGS += -Wnode_name_chars_strict \
302	-Wproperty_name_chars_strict
303endif
304
305DTC_FLAGS += $(DTC_FLAGS_$(basetarget))
306
307# Generate an assembly file to wrap the output of the device tree compiler
308quiet_cmd_dt_S_dtb= DTB     $@
309# Modified for U-Boot
310cmd_dt_S_dtb=						\
311(							\
312	echo '.section .dtb.init.rodata,"a"';		\
313	echo '.balign 16';				\
314	echo '.global __dtb_$(subst -,_,$(*F))_begin';	\
315	echo '__dtb_$(subst -,_,$(*F))_begin:';		\
316	echo '.incbin "$<" ';				\
317	echo '__dtb_$(subst -,_,$(*F))_end:';		\
318	echo '.global __dtb_$(subst -,_,$(*F))_end';	\
319	echo '.balign 16';				\
320) > $@
321
322$(obj)/%.dtb.S: $(obj)/%.dtb
323	$(call cmd,dt_S_dtb)
324
325ifeq ($(CONFIG_OF_LIBFDT_OVERLAY),y)
326DTC_FLAGS += -@
327endif
328
329quiet_cmd_dtc = DTC     $@
330# Modified for U-Boot
331# Bring in any U-Boot-specific include at the end of the file
332# And finally any custom .dtsi fragments specified with CONFIG_DEVICE_TREE_INCLUDES
333cmd_dtc = mkdir -p $(dir ${dtc-tmp}) ; \
334	(cat $< > $(pre-tmp)); \
335	$(foreach f,$(subst $(quote),,$(dtsi_include_list)), \
336	  echo '$(pound)include "$(f)"' >> $(pre-tmp);) \
337	$(HOSTCC) -E $(dtc_cpp_flags) -I$(obj) -x assembler-with-cpp -o $(dtc-tmp) $(pre-tmp) ; \
338	$(DTC) -O dtb -o $@ -b 0 \
339		-i $(dir $<) -i $(u_boot_dtsi_loc) $(DTC_FLAGS) \
340		-d $(depfile).dtc.tmp $(dtc-tmp) || \
341		(echo "Check $(shell pwd)/$(pre-tmp) for errors" && false) \
342		; \
343	sed "s:$(pre-tmp):$(<):" $(depfile).pre.tmp $(depfile).dtc.tmp > $(depfile)
344
345quiet_cmd_capsule_esl_gen = CAPSULE_ESL_GEN $@
346cmd_capsule_esl_gen = \
347	$(shell sed "s:ESL_BIN_FILE:$(capsule_esl_path):" $(capsule_esl_input_file) > $@)
348
349$(obj)/.capsule_esl.dtsi: FORCE
350ifeq ($(CONFIG_EFI_CAPSULE_ESL_FILE),"")
351	$(error "CONFIG_EFI_CAPSULE_ESL_FILE is empty, EFI capsule authentication \
352	public key must be specified when CONFIG_EFI_CAPSULE_AUTHENTICATE is enabled")
353else
354	$(call cmd_capsule_esl_gen)
355endif
356
357capsule_esl_input_file=$(srctree)/lib/efi_loader/capsule_esl.dtsi.in
358capsule_esl_dtsi = .capsule_esl.dtsi
359capsule_esl_path=$(abspath $(srctree)/$(subst $(quote),,$(CONFIG_EFI_CAPSULE_ESL_FILE)))
360
361dtsi_include_list_deps := $(addprefix $(u_boot_dtsi_loc),$(subst $(quote),,$(dtsi_include_list)))
362
363ifdef CONFIG_EFI_CAPSULE_AUTHENTICATE
364dtsi_include_list += $(capsule_esl_dtsi)
365dtsi_include_list_deps += $(obj)/$(capsule_esl_dtsi)
366endif
367
368ifneq ($(CHECK_DTBS),)
369DT_CHECKER ?= dt-validate
370DT_CHECKER_FLAGS ?= $(if $(DT_SCHEMA_FILES),-l $(DT_SCHEMA_FILES),-m)
371DT_BINDING_DIR := dts/upstream/Bindings
372DT_TMP_SCHEMA := $(objtree)/$(DT_BINDING_DIR)/processed-schema.json
373
374quiet_cmd_dtb = DTC_CHK $@
375      cmd_dtb = $(cmd_dtc) ; $(DT_CHECKER) $(DT_CHECKER_FLAGS) -u $(srctree)/$(DT_BINDING_DIR) -p $(DT_TMP_SCHEMA) $@ || true
376else
377quiet_cmd_dtb = $(quiet_cmd_dtc)
378      cmd_dtb = $(cmd_dtc)
379endif
380
381$(obj)/%.dtb: $(src)/%.dts $(DTC) $(dtsi_include_list_deps) $(DT_TMP_SCHEMA) FORCE
382	$(call if_changed_dep,dtb)
383
384pre-tmp = $(subst $(comma),_,$(dot-target).pre.tmp)
385dtc-tmp = $(subst $(comma),_,$(dot-target).dts.tmp)
386
387# DTCO
388# ---------------------------------------------------------------------------
389
390quiet_cmd_dtco = DTCO    $@
391# Rule for objects only; does not put specific u-boot include at the end
392# No generation of assembly file either
393# Modified for U-Boot
394cmd_dtco = mkdir -p $(dir ${dtc-tmp}) ; \
395	$(CPP) $(dtc_cpp_flags) -x assembler-with-cpp -o $(dtc-tmp) $< ; \
396	$(DTC) -@ -O dtb -o $@ -b 0 \
397		-i $(dir $<) $(DTC_FLAGS) \
398		-d $(depfile).dtc.tmp $(dtc-tmp) ; \
399	cat $(depfile).pre.tmp $(depfile).dtc.tmp > $(depfile)
400
401$(obj)/%.dtbo: $(src)/%.dts $(DTC) FORCE
402	$(call if_changed_dep,dtco)
403
404$(obj)/%.dtbo: $(src)/%.dtso $(DTC) FORCE
405	$(call if_changed_dep,dtco)
406
407# Fonts
408# ---------------------------------------------------------------------------
409
410# Generate an assembly file to wrap the font data
411quiet_cmd_S_ttf= TTF     $@
412# Modified for U-Boot
413cmd_S_ttf=						\
414(							\
415	echo '.section .rodata.ttf.init,"a"';		\
416	echo '.balign 16';				\
417	echo '.global __ttf_$(*F)_begin';		\
418	echo '__ttf_$(*F)_begin:';			\
419	echo '.incbin "$<" ';				\
420	echo '__ttf_$(*F)_end:';			\
421	echo '.global __ttf_$(*F)_end';			\
422	echo '.balign 16';				\
423) > $@
424
425$(obj)/%.S: $(src)/%.ttf
426	$(call cmd,S_ttf)
427
428# Splash logos
429# ---------------------------------------------------------------------------
430
431# Generate an assembly file to wrap the splash data
432quiet_cmd_S_splash= TTF     $@
433# Modified for U-Boot
434cmd_S_splash=						\
435(							\
436	echo '.section .rodata.splash.init,"a"';		\
437	echo '.balign 16';				\
438	echo '.global __splash_$(*F)_begin';		\
439	echo '__splash_$(*F)_begin:';			\
440	echo '.incbin "$<" ';				\
441	echo '__splash_$(*F)_end:';			\
442	echo '.global __splash_$(*F)_end';			\
443	echo '.balign 16';				\
444) > $@
445
446$(obj)/%.S: $(src)/%.bmp
447	$(call cmd,S_splash)
448
449# EFI applications
450# A Makefile target *.efi is built as EFI application.
451# A Makefile target *_efi.S wraps *.efi as built-in EFI application.
452# ---------------------------------------------------------------------------
453
454# Generate an assembly file to wrap the EFI app
455cmd_S_efi=					\
456(						\
457	echo '.section .rodata.$*.init,"a"';	\
458	echo '.balign 16';			\
459	echo '.global __efi_$*_begin';		\
460	echo '__efi_$*_begin:';			\
461	echo '.incbin "$<" ';			\
462	echo '__efi_$*_end:';			\
463	echo '.global __efi_$*_end';		\
464	echo '.balign 16';			\
465) > $@
466
467$(obj)/%_efi.S: $(obj)/%.efi
468	$(call cmd,S_efi)
469
470quiet_cmd_efi_objcopy = OBJCOPY $@
471cmd_efi_objcopy = $(OBJCOPY) -j .header -j .text -j .sdata -j .data -j \
472		.dynamic -j .dynsym  -j .rel* -j .rela* -j .reloc \
473		$(if $(EFI_TARGET),$(EFI_TARGET),-O binary) $^ $@
474
475$(obj)/%.efi: $(obj)/%_efi.so
476	$(call cmd,efi_objcopy)
477
478KBUILD_EFILDFLAGS = -nostdlib -zexecstack -znocombreloc -znorelro
479KBUILD_EFILDFLAGS += $(call ld-option,--no-warn-rwx-segments)
480quiet_cmd_efi_ld = LD      $@
481cmd_efi_ld = $(LD) $(KBUILD_EFILDFLAGS) -T $(EFI_LDS_PATH) \
482		-shared -Bsymbolic -s $^ -o $@
483
484EFI_LDS_PATH = $(srctree)/arch/$(ARCH)/lib/$(EFI_LDS)
485
486$(obj)/efi_crt0.o: $(srctree)/arch/$(ARCH)/lib/$(EFI_CRT0:.o=.S) FORCE
487	$(call if_changed_dep,as_o_S)
488
489$(obj)/efi_reloc.o: $(srctree)/arch/$(ARCH)/lib/$(EFI_RELOC:.o=.c) $(recordmcount_source) FORCE
490	$(call cmd,force_checksrc)
491	$(call if_changed_rule,cc_o_c)
492
493$(obj)/%_efi.so: $(obj)/%.o $(obj)/efi_crt0.o $(obj)/efi_reloc.o $(obj)/efi_freestanding.o
494	$(call cmd,efi_ld)
495
496targets += $(obj)/efi_crt0.o $(obj)/efi_reloc.o $(obj)/efi_freestanding.o
497
498CFLAGS_REMOVE_efi_reloc.o := $(LTO_CFLAGS)
499CFLAGS_REMOVE_efi_freestanding.o := $(LTO_CFLAGS)
500
501# ACPI
502# ---------------------------------------------------------------------------
503#
504# This first sends the file (typically dsdt.asl) through the preprocessor
505# resolve includes and any CONFIG options used. This produces dsdt.asl.tmp
506# which is pure ASL code. The Intel ASL (ACPI (Advanced Configuration and Power
507# Interface) Source Language compiler (iasl) then converts this ASL code into a
508# C file containing the hex data to build into U-Boot. This file is called
509# dsdt_generated.hex (despite us setting the prefix to .../dsdt_generated.asl.tmp)
510# so must be renamed to dsdt_generated.c for consumption by the build system.
511ASL_TMP = $(patsubst %.c,%.asl.tmp,$@)
512
513quiet_cmd_acpi_c_asl= ASL     $<
514cmd_acpi_c_asl=         \
515	$(CPP) -x assembler-with-cpp -D__ASSEMBLY__ -D__ACPI__ \
516		-P $(UBOOTINCLUDE) -o $(ASL_TMP) $< && \
517	iasl -p $@ -I $(srctree)/board/$(BOARDDIR) -tc $(ASL_TMP) \
518		$(if $(KBUILD_VERBOSE:1=), >/dev/null) && \
519	mv $(patsubst %.c,%.hex,$@) $@
520
521$(obj)/dsdt_generated.c:    $(src)/dsdt.asl
522	$(call cmd,acpi_c_asl)
523	$(Q)sed -i -e "s,dsdt_generated_aml_code,AmlCode," $@
524
525# Bzip2
526# ---------------------------------------------------------------------------
527
528# Bzip2 and LZMA do not include size in file... so we have to fake that;
529# append the size as a 32-bit littleendian number as gzip does.
530size_append = printf $(shell						\
531dec_size=0;								\
532for F in $1; do								\
533	fsize=$$(stat -c "%s" $$F);					\
534	dec_size=$$(expr $$dec_size + $$fsize);				\
535done;									\
536printf "%08x\n" $$dec_size |						\
537	sed 's/\(..\)/\1 /g' | {					\
538		read ch0 ch1 ch2 ch3;					\
539		for ch in $$ch3 $$ch2 $$ch1 $$ch0; do			\
540			printf '%s%03o' '\\' $$((0x$$ch)); 		\
541		done;							\
542	}								\
543)
544
545quiet_cmd_bzip2 = BZIP2   $@
546cmd_bzip2 = (cat $(filter-out FORCE,$^) | \
547	bzip2 -9 && $(call size_append, $(filter-out FORCE,$^))) > $@ || \
548	(rm -f $@ ; false)
549
550# Lzma
551# ---------------------------------------------------------------------------
552
553quiet_cmd_lzma = LZMA    $@
554cmd_lzma = (cat $(filter-out FORCE,$^) | \
555	lzma -9 && $(call size_append, $(filter-out FORCE,$^))) > $@ || \
556	(rm -f $@ ; false)
557
558quiet_cmd_lzo = LZO     $@
559cmd_lzo = (cat $(filter-out FORCE,$^) | \
560	lzop -9 && $(call size_append, $(filter-out FORCE,$^))) > $@ || \
561	(rm -f $@ ; false)
562
563quiet_cmd_lz4 = LZ4     $@
564cmd_lz4 = (cat $(filter-out FORCE,$^) | \
565	lz4c -l -c1 stdin stdout && $(call size_append, $(filter-out FORCE,$^))) > $@ || \
566	(rm -f $@ ; false)
567
568# U-Boot mkimage
569# ---------------------------------------------------------------------------
570
571MKIMAGE := $(srctree)/scripts/mkuboot.sh
572
573# SRCARCH just happens to match slightly more than ARCH (on sparc), so reduces
574# the number of overrides in arch makefiles
575UIMAGE_ARCH ?= $(SRCARCH)
576UIMAGE_COMPRESSION ?= $(if $(2),$(2),none)
577UIMAGE_OPTS-y ?=
578UIMAGE_TYPE ?= kernel
579UIMAGE_LOADADDR ?= arch_must_set_this
580UIMAGE_ENTRYADDR ?= $(UIMAGE_LOADADDR)
581UIMAGE_NAME ?= 'Linux-$(KERNELRELEASE)'
582UIMAGE_IN ?= $<
583UIMAGE_OUT ?= $@
584
585quiet_cmd_uimage = UIMAGE  $(UIMAGE_OUT)
586      cmd_uimage = $(CONFIG_SHELL) $(MKIMAGE) -A $(UIMAGE_ARCH) -O linux \
587			-C $(UIMAGE_COMPRESSION) $(UIMAGE_OPTS-y) \
588			-T $(UIMAGE_TYPE) \
589			-a $(UIMAGE_LOADADDR) -e $(UIMAGE_ENTRYADDR) \
590			-n $(UIMAGE_NAME) -d $(UIMAGE_IN) $(UIMAGE_OUT)
591
592# XZ
593# ---------------------------------------------------------------------------
594# Use xzkern to compress the kernel image and xzmisc to compress other things.
595#
596# xzkern uses a big LZMA2 dictionary since it doesn't increase memory usage
597# of the kernel decompressor. A BCJ filter is used if it is available for
598# the target architecture. xzkern also appends uncompressed size of the data
599# using size_append. The .xz format has the size information available at
600# the end of the file too, but it's in more complex format and it's good to
601# avoid changing the part of the boot code that reads the uncompressed size.
602# Note that the bytes added by size_append will make the xz tool think that
603# the file is corrupt. This is expected.
604#
605# xzmisc doesn't use size_append, so it can be used to create normal .xz
606# files. xzmisc uses smaller LZMA2 dictionary than xzkern, because a very
607# big dictionary would increase the memory usage too much in the multi-call
608# decompression mode. A BCJ filter isn't used either.
609quiet_cmd_xzkern = XZKERN  $@
610cmd_xzkern = (cat $(filter-out FORCE,$^) | \
611	sh $(srctree)/scripts/xz_wrap.sh && \
612	$(call size_append, $(filter-out FORCE,$^))) > $@ || \
613	(rm -f $@ ; false)
614
615quiet_cmd_xzmisc = XZMISC  $@
616cmd_xzmisc = (cat $(filter-out FORCE,$^) | \
617	xz --check=crc32 --lzma2=dict=1MiB) > $@ || \
618	(rm -f $@ ; false)
619
620# Additional commands for U-Boot
621#
622# bin2c
623# ---------------------------------------------------------------------------
624quiet_cmd_bin2c = BIN2C   $@
625      cmd_bin2c = $(objtree)/scripts/bin2c $2 < $< > $@
626
627# mkimage
628# ---------------------------------------------------------------------------
629MKIMAGEOUTPUT ?= /dev/null
630quiet_cmd_mkimage = MKIMAGE $@
631cmd_mkimage = $(objtree)/tools/mkimage $(MKIMAGEFLAGS_$(@F)) -d $< $@ \
632	>$(MKIMAGEOUTPUT) $(if $(KBUILD_VERBOSE:0=), && cat $(MKIMAGEOUTPUT))
633
634# fdtgrep
635# ---------------------------------------------------------------------------
636# Pass the original device tree file through fdtgrep twice. The first pass
637# removes any unwanted nodes (i.e. those which don't have the
638# 'bootph-all' property and thus are not needed by SPL. The second
639# pass removes various unused properties from the remaining nodes.
640# The output is typically a much smaller device tree file.
641
642ifdef CONFIG_OF_TAG_MIGRATE
643# Support the old tags for a migration period
644migrate_tpl := -b u-boot,dm-pre-reloc -b u-boot,dm-tpl
645migrate_vpl := -b u-boot,dm-pre-reloc -b u-boot,dm-vpl
646migrate_spl := -b u-boot,dm-pre-reloc -b u-boot,dm-spl
647migrate_all := -P u-boot,dm-pre-reloc \
648	-P u-boot,dm-spl -P u-boot,dm-tpl -P u-boot,dm-vpl
649endif
650
651ifeq ($(CONFIG_VPL_BUILD),y)
652fdtgrep_props := -b bootph-all -b bootph-verify $(migrate_vpl)
653else
654ifeq ($(CONFIG_TPL_BUILD),y)
655fdtgrep_props := -b bootph-all -b bootph-pre-sram $(migrate_tpl)
656else
657fdtgrep_props := -b bootph-all -b bootph-pre-ram $(migrate_spl)
658endif
659endif
660
661# This rule produces the .dtb for an SPL build.
662#
663# The first fdtgrep keeps nodes with the above properties (with -u ensuring that
664# the properties are implied in all parents of a matching node). The root node
665# is always included, along with /chosen and /config nodes. Referenced aliases
666# (i.e. properties in /aliases which point to an incldued node) are also
667# included.
668#
669# The second fdtgrep removes all bootph properties along with unused strings
670# and any properties in CONFIG_OF_SPL_REMOVE_PROPS
671quiet_cmd_fdtgrep = FDTGREP $@
672      cmd_fdtgrep = $(objtree)/tools/fdtgrep $(fdtgrep_props) -u -RT $< \
673		-n /chosen -n /config -O dtb | \
674	$(objtree)/tools/fdtgrep -r -O dtb - -o $@ \
675		-P bootph-all -P bootph-pre-ram -P bootph-pre-sram \
676		-P bootph-verify \
677		$(migrate_all) \
678		$(addprefix -P ,$(subst $\",,$(CONFIG_OF_SPL_REMOVE_PROPS)))
679
680# fdt_rm_props
681# ---------------------------------------------------------------------------
682# Pass the original device tree file through fdtgrep. This removes various
683# unused properties. The output is typically a smaller device tree file.
684quiet_cmd_fdt_rm_props = FDTGREP $@
685	cmd_fdt_rm_props = cat $< | $(objtree)/tools/fdtgrep -r -O dtb - -o $@ \
686			$(addprefix -P ,$(subst $\",,$(CONFIG_OF_REMOVE_PROPS)))
687
688# ASM offsets
689# ---------------------------------------------------------------------------
690
691# Default sed regexp - multiline due to syntax constraints
692define sed-offsets
693	"s:[[:space:]]*\.ascii[[:space:]]*\"\(.*\)\":\1:; \
694	/^->/{s:->#\(.*\):/* \1 */:; \
695	s:^->\([^ ]*\) [\$$#]*\([-0-9]*\) \(.*\):#define \1 \2 /* \3 */:; \
696	s:^->\([^ ]*\) [\$$#]*\([^ ]*\) \(.*\):#define \1 \2 /* \3 */:; \
697	s:->::; p;}"
698endef
699
700# Use filechk to avoid rebuilds when a header changes, but the resulting file
701# does not
702define filechk_offsets
703	(set -e; \
704	 echo "#ifndef $2"; \
705	 echo "#define $2"; \
706	 echo "/*"; \
707	 echo " * DO NOT MODIFY."; \
708	 echo " *"; \
709	 echo " * This file was generated by Kbuild"; \
710	 echo " */"; \
711	 echo ""; \
712	 sed -ne $(sed-offsets); \
713	 echo ""; \
714	 echo "#endif" )
715endef
716