Makefile.lib 21 KB

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