Makefile 15 KB

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  1. # This file is included by the global makefile so that you can add your own
  2. # architecture-specific flags and dependencies. Remember to do have actions
  3. # for "archclean" and "archdep" for cleaning up and making dependencies for
  4. # this architecture.
  5. #
  6. # This file is subject to the terms and conditions of the GNU General Public
  7. # License. See the file "COPYING" in the main directory of this archive
  8. # for more details.
  9. #
  10. # Copyright (C) 1994 by Linus Torvalds
  11. # Changes for PPC by Gary Thomas
  12. # Rewritten by Cort Dougan and Paul Mackerras
  13. #
  14. HAS_BIARCH := $(call cc-option-yn, -m32)
  15. # Set default 32 bits cross compilers for vdso and boot wrapper
  16. CROSS32_COMPILE ?=
  17. ifeq ($(HAS_BIARCH),y)
  18. ifeq ($(CROSS32_COMPILE),)
  19. ifdef CONFIG_PPC32
  20. # These options will be overridden by any -mcpu option that the CPU
  21. # or platform code sets later on the command line, but they are needed
  22. # to set a sane 32-bit cpu target for the 64-bit cross compiler which
  23. # may default to the wrong ISA.
  24. KBUILD_CFLAGS += -mcpu=powerpc
  25. KBUILD_AFLAGS += -mcpu=powerpc
  26. endif
  27. endif
  28. endif
  29. ifdef CONFIG_PPC_BOOK3S_32
  30. KBUILD_CFLAGS += -mcpu=powerpc
  31. endif
  32. # If we're on a ppc/ppc64/ppc64le machine use that defconfig, otherwise just use
  33. # ppc64_defconfig because we have nothing better to go on.
  34. uname := $(shell uname -m)
  35. KBUILD_DEFCONFIG := $(if $(filter ppc%,$(uname)),$(uname),ppc64)_defconfig
  36. new_nm := $(shell if $(NM) --help 2>&1 | grep -- '--synthetic' > /dev/null; then echo y; else echo n; fi)
  37. ifeq ($(new_nm),y)
  38. NM := $(NM) --synthetic
  39. endif
  40. # BITS is used as extension for files which are available in a 32 bit
  41. # and a 64 bit version to simplify shared Makefiles.
  42. # e.g.: obj-y += foo_$(BITS).o
  43. export BITS
  44. ifdef CONFIG_PPC64
  45. BITS := 64
  46. else
  47. BITS := 32
  48. endif
  49. machine-y = ppc
  50. machine-$(CONFIG_PPC64) += 64
  51. machine-$(CONFIG_CPU_LITTLE_ENDIAN) += le
  52. UTS_MACHINE := $(subst $(space),,$(machine-y))
  53. # XXX This needs to be before we override LD below
  54. ifdef CONFIG_PPC32
  55. KBUILD_LDFLAGS_MODULE += arch/powerpc/lib/crtsavres.o
  56. else
  57. ifeq ($(call ld-ifversion, -ge, 225000000, y),y)
  58. # Have the linker provide sfpr if possible.
  59. # There is a corresponding test in arch/powerpc/lib/Makefile
  60. KBUILD_LDFLAGS_MODULE += --save-restore-funcs
  61. else
  62. KBUILD_LDFLAGS_MODULE += arch/powerpc/lib/crtsavres.o
  63. endif
  64. endif
  65. ifdef CONFIG_CPU_LITTLE_ENDIAN
  66. KBUILD_CFLAGS += -mlittle-endian
  67. KBUILD_LDFLAGS += -EL
  68. LDEMULATION := lppc
  69. GNUTARGET := powerpcle
  70. MULTIPLEWORD := -mno-multiple
  71. KBUILD_CFLAGS_MODULE += $(call cc-option,-mno-save-toc-indirect)
  72. else
  73. KBUILD_CFLAGS += $(call cc-option,-mbig-endian)
  74. KBUILD_LDFLAGS += -EB
  75. LDEMULATION := ppc
  76. GNUTARGET := powerpc
  77. MULTIPLEWORD := -mmultiple
  78. endif
  79. ifdef CONFIG_PPC64
  80. ifndef CONFIG_CC_IS_CLANG
  81. cflags-$(CONFIG_CPU_BIG_ENDIAN) += $(call cc-option,-mabi=elfv1)
  82. cflags-$(CONFIG_CPU_BIG_ENDIAN) += $(call cc-option,-mcall-aixdesc)
  83. aflags-$(CONFIG_CPU_BIG_ENDIAN) += $(call cc-option,-mabi=elfv1)
  84. aflags-$(CONFIG_CPU_LITTLE_ENDIAN) += -mabi=elfv2
  85. endif
  86. endif
  87. ifndef CONFIG_CC_IS_CLANG
  88. cflags-$(CONFIG_CPU_LITTLE_ENDIAN) += -mno-strict-align
  89. endif
  90. cflags-$(CONFIG_CPU_BIG_ENDIAN) += $(call cc-option,-mbig-endian)
  91. cflags-$(CONFIG_CPU_LITTLE_ENDIAN) += -mlittle-endian
  92. aflags-$(CONFIG_CPU_BIG_ENDIAN) += $(call cc-option,-mbig-endian)
  93. aflags-$(CONFIG_CPU_LITTLE_ENDIAN) += -mlittle-endian
  94. ifeq ($(HAS_BIARCH),y)
  95. KBUILD_CFLAGS += -m$(BITS)
  96. KBUILD_AFLAGS += -m$(BITS) -Wl,-a$(BITS)
  97. KBUILD_LDFLAGS += -m elf$(BITS)$(LDEMULATION)
  98. endif
  99. cflags-$(CONFIG_STACKPROTECTOR) += -mstack-protector-guard=tls
  100. ifdef CONFIG_PPC64
  101. cflags-$(CONFIG_STACKPROTECTOR) += -mstack-protector-guard-reg=r13
  102. else
  103. cflags-$(CONFIG_STACKPROTECTOR) += -mstack-protector-guard-reg=r2
  104. endif
  105. LDFLAGS_vmlinux-y := -Bstatic
  106. LDFLAGS_vmlinux-$(CONFIG_RELOCATABLE) := -pie
  107. LDFLAGS_vmlinux := $(LDFLAGS_vmlinux-y)
  108. ifdef CONFIG_PPC64
  109. ifeq ($(call cc-option-yn,-mcmodel=medium),y)
  110. # -mcmodel=medium breaks modules because it uses 32bit offsets from
  111. # the TOC pointer to create pointers where possible. Pointers into the
  112. # percpu data area are created by this method.
  113. #
  114. # The kernel module loader relocates the percpu data section from the
  115. # original location (starting with 0xd...) to somewhere in the base
  116. # kernel percpu data space (starting with 0xc...). We need a full
  117. # 64bit relocation for this to work, hence -mcmodel=large.
  118. KBUILD_CFLAGS_MODULE += -mcmodel=large
  119. else
  120. export NO_MINIMAL_TOC := -mno-minimal-toc
  121. endif
  122. endif
  123. CFLAGS-$(CONFIG_PPC64) := $(call cc-option,-mtraceback=no)
  124. ifndef CONFIG_CC_IS_CLANG
  125. ifdef CONFIG_CPU_LITTLE_ENDIAN
  126. CFLAGS-$(CONFIG_PPC64) += $(call cc-option,-mabi=elfv2,$(call cc-option,-mcall-aixdesc))
  127. AFLAGS-$(CONFIG_PPC64) += $(call cc-option,-mabi=elfv2)
  128. else
  129. CFLAGS-$(CONFIG_PPC64) += $(call cc-option,-mabi=elfv1)
  130. CFLAGS-$(CONFIG_PPC64) += $(call cc-option,-mcall-aixdesc)
  131. AFLAGS-$(CONFIG_PPC64) += $(call cc-option,-mabi=elfv1)
  132. endif
  133. endif
  134. CFLAGS-$(CONFIG_PPC64) += $(call cc-option,-mcmodel=medium,$(call cc-option,-mminimal-toc))
  135. CFLAGS-$(CONFIG_PPC64) += $(call cc-option,-mno-pointers-to-nested-functions)
  136. # Clang unconditionally reserves r2 on ppc32 and does not support the flag
  137. # https://bugs.llvm.org/show_bug.cgi?id=39555
  138. CFLAGS-$(CONFIG_PPC32) := $(call cc-option, -ffixed-r2)
  139. # Clang doesn't support -mmultiple / -mno-multiple
  140. # https://bugs.llvm.org/show_bug.cgi?id=39556
  141. CFLAGS-$(CONFIG_PPC32) += $(call cc-option, $(MULTIPLEWORD))
  142. CFLAGS-$(CONFIG_PPC32) += $(call cc-option,-mno-readonly-in-sdata)
  143. ifdef CONFIG_PPC_BOOK3S_64
  144. ifdef CONFIG_CPU_LITTLE_ENDIAN
  145. CFLAGS-$(CONFIG_GENERIC_CPU) += -mcpu=power8
  146. CFLAGS-$(CONFIG_GENERIC_CPU) += $(call cc-option,-mtune=power9,-mtune=power8)
  147. else
  148. CFLAGS-$(CONFIG_GENERIC_CPU) += $(call cc-option,-mtune=power7,$(call cc-option,-mtune=power5))
  149. CFLAGS-$(CONFIG_GENERIC_CPU) += $(call cc-option,-mcpu=power5,-mcpu=power4)
  150. endif
  151. else ifdef CONFIG_PPC_BOOK3E_64
  152. CFLAGS-$(CONFIG_GENERIC_CPU) += -mcpu=powerpc64
  153. endif
  154. ifdef CONFIG_FUNCTION_TRACER
  155. CC_FLAGS_FTRACE := -pg
  156. ifdef CONFIG_MPROFILE_KERNEL
  157. CC_FLAGS_FTRACE += -mprofile-kernel
  158. endif
  159. # Work around gcc code-gen bugs with -pg / -fno-omit-frame-pointer in gcc <= 4.8
  160. # https://gcc.gnu.org/bugzilla/show_bug.cgi?id=44199
  161. # https://gcc.gnu.org/bugzilla/show_bug.cgi?id=52828
  162. ifndef CONFIG_CC_IS_CLANG
  163. CC_FLAGS_FTRACE += $(call cc-ifversion, -lt, 0409, -mno-sched-epilog)
  164. endif
  165. endif
  166. CFLAGS-$(CONFIG_TARGET_CPU_BOOL) += $(call cc-option,-mcpu=$(CONFIG_TARGET_CPU))
  167. # Altivec option not allowed with e500mc64 in GCC.
  168. ifdef CONFIG_ALTIVEC
  169. E5500_CPU := -mcpu=powerpc64
  170. else
  171. E5500_CPU := $(call cc-option,-mcpu=e500mc64,-mcpu=powerpc64)
  172. endif
  173. CFLAGS-$(CONFIG_E5500_CPU) += $(E5500_CPU)
  174. CFLAGS-$(CONFIG_E6500_CPU) += $(call cc-option,-mcpu=e6500,$(E5500_CPU))
  175. ifdef CONFIG_PPC32
  176. ifdef CONFIG_PPC_E500MC
  177. CFLAGS-y += $(call cc-option,-mcpu=e500mc,-mcpu=powerpc)
  178. else
  179. CFLAGS-$(CONFIG_E500) += $(call cc-option,-mcpu=8540 -msoft-float,-mcpu=powerpc)
  180. endif
  181. endif
  182. asinstr := $(call as-instr,lis 9$(comma)foo@high,-DHAVE_AS_ATHIGH=1)
  183. KBUILD_CPPFLAGS += -I $(srctree)/arch/$(ARCH) $(asinstr)
  184. KBUILD_AFLAGS += $(AFLAGS-y)
  185. KBUILD_CFLAGS += $(call cc-option,-msoft-float)
  186. KBUILD_CFLAGS += -pipe $(CFLAGS-y)
  187. CPP = $(CC) -E $(KBUILD_CFLAGS)
  188. CHECKFLAGS += -m$(BITS) -D__powerpc__ -D__powerpc$(BITS)__
  189. ifdef CONFIG_CPU_BIG_ENDIAN
  190. CHECKFLAGS += -D__BIG_ENDIAN__
  191. else
  192. CHECKFLAGS += -D__LITTLE_ENDIAN__
  193. endif
  194. ifdef CONFIG_476FPE_ERR46
  195. KBUILD_LDFLAGS_MODULE += --ppc476-workaround \
  196. -T $(srctree)/arch/powerpc/platforms/44x/ppc476_modules.lds
  197. endif
  198. # No AltiVec or VSX instructions when building kernel
  199. KBUILD_CFLAGS += $(call cc-option,-mno-altivec)
  200. KBUILD_CFLAGS += $(call cc-option,-mno-vsx)
  201. # No SPE instruction when building kernel
  202. # (We use all available options to help semi-broken compilers)
  203. KBUILD_CFLAGS += $(call cc-option,-mno-spe)
  204. KBUILD_CFLAGS += $(call cc-option,-mspe=no)
  205. # Don't emit .eh_frame since we have no use for it
  206. KBUILD_CFLAGS += -fno-asynchronous-unwind-tables
  207. # Never use string load/store instructions as they are
  208. # often slow when they are implemented at all
  209. KBUILD_CFLAGS += $(call cc-option,-mno-string)
  210. cpu-as-$(CONFIG_40x) += -Wa,-m405
  211. cpu-as-$(CONFIG_44x) += -Wa,-m440
  212. cpu-as-$(CONFIG_ALTIVEC) += $(call as-option,-Wa$(comma)-maltivec)
  213. cpu-as-$(CONFIG_E500) += -Wa,-me500
  214. # When using '-many -mpower4' gas will first try and find a matching power4
  215. # mnemonic and failing that it will allow any valid mnemonic that GAS knows
  216. # about. GCC will pass -many to GAS when assembling, clang does not.
  217. cpu-as-$(CONFIG_PPC_BOOK3S_64) += -Wa,-mpower4 -Wa,-many
  218. cpu-as-$(CONFIG_PPC_E500MC) += $(call as-option,-Wa$(comma)-me500mc)
  219. KBUILD_AFLAGS += $(cpu-as-y)
  220. KBUILD_CFLAGS += $(cpu-as-y)
  221. KBUILD_AFLAGS += $(aflags-y)
  222. KBUILD_CFLAGS += $(cflags-y)
  223. head-$(CONFIG_PPC64) := arch/powerpc/kernel/head_64.o
  224. head-$(CONFIG_PPC_BOOK3S_32) := arch/powerpc/kernel/head_book3s_32.o
  225. head-$(CONFIG_PPC_8xx) := arch/powerpc/kernel/head_8xx.o
  226. head-$(CONFIG_40x) := arch/powerpc/kernel/head_40x.o
  227. head-$(CONFIG_44x) := arch/powerpc/kernel/head_44x.o
  228. head-$(CONFIG_FSL_BOOKE) := arch/powerpc/kernel/head_fsl_booke.o
  229. head-$(CONFIG_PPC64) += arch/powerpc/kernel/entry_64.o
  230. head-$(CONFIG_PPC_FPU) += arch/powerpc/kernel/fpu.o
  231. head-$(CONFIG_ALTIVEC) += arch/powerpc/kernel/vector.o
  232. head-$(CONFIG_PPC_OF_BOOT_TRAMPOLINE) += arch/powerpc/kernel/prom_init.o
  233. # See arch/powerpc/Kbuild for content of core part of the kernel
  234. core-y += arch/powerpc/
  235. drivers-$(CONFIG_OPROFILE) += arch/powerpc/oprofile/
  236. # Default to zImage, override when needed
  237. all: zImage
  238. # With make 3.82 we cannot mix normal and wildcard targets
  239. BOOT_TARGETS1 := zImage zImage.initrd uImage
  240. BOOT_TARGETS2 := zImage% dtbImage% treeImage.% cuImage.% simpleImage.% uImage.%
  241. PHONY += $(BOOT_TARGETS1) $(BOOT_TARGETS2)
  242. boot := arch/$(ARCH)/boot
  243. $(BOOT_TARGETS1): vmlinux
  244. $(Q)$(MAKE) $(build)=$(boot) $(patsubst %,$(boot)/%,$@)
  245. $(BOOT_TARGETS2): vmlinux
  246. $(Q)$(MAKE) $(build)=$(boot) $(patsubst %,$(boot)/%,$@)
  247. PHONY += bootwrapper_install
  248. bootwrapper_install:
  249. $(Q)$(MAKE) $(build)=$(boot) $(patsubst %,$(boot)/%,$@)
  250. # Used to create 'merged defconfigs'
  251. # To use it $(call) it with the first argument as the base defconfig
  252. # and the second argument as a space separated list of .config files to merge,
  253. # without the .config suffix.
  254. define merge_into_defconfig
  255. $(Q)$(CONFIG_SHELL) $(srctree)/scripts/kconfig/merge_config.sh \
  256. -m -O $(objtree) $(srctree)/arch/$(ARCH)/configs/$(1) \
  257. $(foreach config,$(2),$(srctree)/arch/$(ARCH)/configs/$(config).config)
  258. +$(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig
  259. endef
  260. PHONY += pseries_le_defconfig
  261. pseries_le_defconfig:
  262. $(call merge_into_defconfig,pseries_defconfig,le)
  263. PHONY += ppc64le_defconfig
  264. ppc64le_defconfig:
  265. $(call merge_into_defconfig,ppc64_defconfig,le)
  266. PHONY += ppc64le_guest_defconfig
  267. ppc64le_guest_defconfig:
  268. $(call merge_into_defconfig,ppc64_defconfig,le guest)
  269. PHONY += ppc64_guest_defconfig
  270. ppc64_guest_defconfig:
  271. $(call merge_into_defconfig,ppc64_defconfig,be guest)
  272. PHONY += powernv_be_defconfig
  273. powernv_be_defconfig:
  274. $(call merge_into_defconfig,powernv_defconfig,be)
  275. PHONY += mpc85xx_defconfig
  276. mpc85xx_defconfig:
  277. $(call merge_into_defconfig,mpc85xx_base.config,\
  278. 85xx-32bit 85xx-hw fsl-emb-nonhw)
  279. PHONY += mpc85xx_smp_defconfig
  280. mpc85xx_smp_defconfig:
  281. $(call merge_into_defconfig,mpc85xx_base.config,\
  282. 85xx-32bit 85xx-smp 85xx-hw fsl-emb-nonhw)
  283. PHONY += corenet32_smp_defconfig
  284. corenet32_smp_defconfig:
  285. $(call merge_into_defconfig,corenet_base.config,\
  286. 85xx-32bit 85xx-smp 85xx-hw fsl-emb-nonhw dpaa)
  287. PHONY += corenet64_smp_defconfig
  288. corenet64_smp_defconfig:
  289. $(call merge_into_defconfig,corenet_base.config,\
  290. 85xx-64bit 85xx-smp altivec 85xx-hw fsl-emb-nonhw dpaa)
  291. PHONY += mpc86xx_defconfig
  292. mpc86xx_defconfig:
  293. $(call merge_into_defconfig,mpc86xx_base.config,\
  294. 86xx-hw fsl-emb-nonhw)
  295. PHONY += mpc86xx_smp_defconfig
  296. mpc86xx_smp_defconfig:
  297. $(call merge_into_defconfig,mpc86xx_base.config,\
  298. 86xx-smp 86xx-hw fsl-emb-nonhw)
  299. PHONY += ppc32_allmodconfig
  300. ppc32_allmodconfig:
  301. $(Q)$(MAKE) KCONFIG_ALLCONFIG=$(srctree)/arch/powerpc/configs/book3s_32.config \
  302. -f $(srctree)/Makefile allmodconfig
  303. PHONY += ppc_defconfig
  304. ppc_defconfig:
  305. $(call merge_into_defconfig,book3s_32.config,)
  306. PHONY += ppc64le_allmodconfig
  307. ppc64le_allmodconfig:
  308. $(Q)$(MAKE) KCONFIG_ALLCONFIG=$(srctree)/arch/powerpc/configs/le.config \
  309. -f $(srctree)/Makefile allmodconfig
  310. PHONY += ppc64_book3e_allmodconfig
  311. ppc64_book3e_allmodconfig:
  312. $(Q)$(MAKE) KCONFIG_ALLCONFIG=$(srctree)/arch/powerpc/configs/85xx-64bit.config \
  313. -f $(srctree)/Makefile allmodconfig
  314. define archhelp
  315. @echo '* zImage - Build default images selected by kernel config'
  316. @echo ' zImage.* - Compressed kernel image (arch/$(ARCH)/boot/zImage.*)'
  317. @echo ' uImage - U-Boot native image format'
  318. @echo ' cuImage.<dt> - Backwards compatible U-Boot image for older'
  319. @echo ' versions which do not support device trees'
  320. @echo ' dtbImage.<dt> - zImage with an embedded device tree blob'
  321. @echo ' simpleImage.<dt> - Firmware independent image.'
  322. @echo ' treeImage.<dt> - Support for older IBM 4xx firmware (not U-Boot)'
  323. @echo ' install - Install kernel using'
  324. @echo ' (your) ~/bin/$(INSTALLKERNEL) or'
  325. @echo ' (distribution) /sbin/$(INSTALLKERNEL) or'
  326. @echo ' install to $$(INSTALL_PATH) and run lilo'
  327. @echo ' *_defconfig - Select default config from arch/$(ARCH)/configs'
  328. @echo ''
  329. @echo ' Targets with <dt> embed a device tree blob inside the image'
  330. @echo ' These targets support board with firmware that does not'
  331. @echo ' support passing a device tree directly. Replace <dt> with the'
  332. @echo ' name of a dts file from the arch/$(ARCH)/boot/dts/ directory'
  333. @echo ' (minus the .dts extension).'
  334. endef
  335. PHONY += install
  336. install:
  337. $(Q)$(MAKE) $(build)=$(boot) install
  338. PHONY += vdso_install
  339. vdso_install:
  340. ifdef CONFIG_PPC64
  341. $(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso64 $@
  342. endif
  343. ifdef CONFIG_VDSO32
  344. $(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso32 $@
  345. endif
  346. archclean:
  347. $(Q)$(MAKE) $(clean)=$(boot)
  348. archprepare: checkbin
  349. archheaders:
  350. $(Q)$(MAKE) $(build)=arch/powerpc/kernel/syscalls all
  351. ifdef CONFIG_STACKPROTECTOR
  352. prepare: stack_protector_prepare
  353. PHONY += stack_protector_prepare
  354. stack_protector_prepare: prepare0
  355. ifdef CONFIG_PPC64
  356. $(eval KBUILD_CFLAGS += -mstack-protector-guard-offset=$(shell awk '{if ($$2 == "PACA_CANARY") print $$3;}' include/generated/asm-offsets.h))
  357. else
  358. $(eval KBUILD_CFLAGS += -mstack-protector-guard-offset=$(shell awk '{if ($$2 == "TASK_CANARY") print $$3;}' include/generated/asm-offsets.h))
  359. endif
  360. endif
  361. ifdef CONFIG_SMP
  362. prepare: task_cpu_prepare
  363. PHONY += task_cpu_prepare
  364. task_cpu_prepare: prepare0
  365. $(eval KBUILD_CFLAGS += -D_TASK_CPU=$(shell awk '{if ($$2 == "TASK_CPU") print $$3;}' include/generated/asm-offsets.h))
  366. endif
  367. PHONY += checkbin
  368. # Check toolchain versions:
  369. # - gcc-4.6 is the minimum kernel-wide version so nothing required.
  370. checkbin:
  371. @if test "x${CONFIG_CPU_LITTLE_ENDIAN}" = "xy" \
  372. && $(LD) --version | head -1 | grep ' 2\.24$$' >/dev/null ; then \
  373. echo -n '*** binutils 2.24 miscompiles weak symbols ' ; \
  374. echo 'in some circumstances.' ; \
  375. echo -n '*** Please use a different binutils version.' ; \
  376. false ; \
  377. fi