Makefile 6.5 KB

123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222
  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. CROSS32CC := $(CROSS32_COMPILE)gcc
  18. CROSS32AS := $(CROSS32_COMPILE)as
  19. CROSS32LD := $(CROSS32_COMPILE)ld
  20. CROSS32AR := $(CROSS32_COMPILE)ar
  21. CROSS32OBJCOPY := $(CROSS32_COMPILE)objcopy
  22. ifeq ($(HAS_BIARCH),y)
  23. ifeq ($(CROSS32_COMPILE),)
  24. CROSS32CC := $(CC) -m32
  25. CROSS32AS := $(AS) -a32
  26. CROSS32LD := $(LD) -m elf32ppc
  27. CROSS32OBJCOPY := $(OBJCOPY)
  28. CROSS32AR := GNUTARGET=elf32-powerpc $(AR)
  29. endif
  30. endif
  31. export CROSS32CC CROSS32AS CROSS32LD CROSS32AR CROSS32OBJCOPY
  32. ifeq ($(CROSS_COMPILE),)
  33. KBUILD_DEFCONFIG := $(shell uname -m)_defconfig
  34. else
  35. KBUILD_DEFCONFIG := ppc64_defconfig
  36. endif
  37. ifeq ($(CONFIG_PPC64),y)
  38. OLDARCH := ppc64
  39. new_nm := $(shell if $(NM) --help 2>&1 | grep -- '--synthetic' > /dev/null; then echo y; else echo n; fi)
  40. ifeq ($(new_nm),y)
  41. NM := $(NM) --synthetic
  42. endif
  43. else
  44. OLDARCH := ppc
  45. endif
  46. # It seems there are times we use this Makefile without
  47. # including the config file, but this replicates the old behaviour
  48. ifeq ($(CONFIG_WORD_SIZE),)
  49. CONFIG_WORD_SIZE := 32
  50. endif
  51. UTS_MACHINE := $(OLDARCH)
  52. ifeq ($(HAS_BIARCH),y)
  53. override AS += -a$(CONFIG_WORD_SIZE)
  54. override LD += -m elf$(CONFIG_WORD_SIZE)ppc
  55. override CC += -m$(CONFIG_WORD_SIZE)
  56. override AR := GNUTARGET=elf$(CONFIG_WORD_SIZE)-powerpc $(AR)
  57. endif
  58. LDFLAGS_vmlinux := -Bstatic
  59. CPPFLAGS-$(CONFIG_PPC32) := -Iarch/$(ARCH)
  60. AFLAGS-$(CONFIG_PPC32) := -Iarch/$(ARCH)
  61. CFLAGS-$(CONFIG_PPC64) := -mminimal-toc -mtraceback=none -mcall-aixdesc
  62. CFLAGS-$(CONFIG_PPC32) := -Iarch/$(ARCH) -ffixed-r2 -mmultiple
  63. KBUILD_CPPFLAGS += $(CPPFLAGS-y)
  64. KBUILD_AFLAGS += $(AFLAGS-y)
  65. KBUILD_CFLAGS += -msoft-float -pipe $(CFLAGS-y)
  66. CPP = $(CC) -E $(KBUILD_CFLAGS)
  67. CHECKFLAGS += -m$(CONFIG_WORD_SIZE) -D__powerpc__ -D__powerpc$(CONFIG_WORD_SIZE)__
  68. ifeq ($(CONFIG_PPC64),y)
  69. GCC_BROKEN_VEC := $(shell if [ $(call cc-version) -lt 0400 ] ; then echo "y"; fi)
  70. ifeq ($(CONFIG_POWER4_ONLY),y)
  71. ifeq ($(CONFIG_ALTIVEC),y)
  72. ifeq ($(GCC_BROKEN_VEC),y)
  73. KBUILD_CFLAGS += $(call cc-option,-mcpu=970)
  74. else
  75. KBUILD_CFLAGS += $(call cc-option,-mcpu=power4)
  76. endif
  77. else
  78. KBUILD_CFLAGS += $(call cc-option,-mcpu=power4)
  79. endif
  80. else
  81. KBUILD_CFLAGS += $(call cc-option,-mtune=power4)
  82. endif
  83. endif
  84. ifeq ($(CONFIG_TUNE_CELL),y)
  85. KBUILD_CFLAGS += $(call cc-option,-mtune=cell)
  86. endif
  87. # No AltiVec instruction when building kernel
  88. KBUILD_CFLAGS += $(call cc-option,-mno-altivec)
  89. # Enable unit-at-a-time mode when possible. It shrinks the
  90. # kernel considerably.
  91. KBUILD_CFLAGS += $(call cc-option,-funit-at-a-time)
  92. # Never use string load/store instructions as they are
  93. # often slow when they are implemented at all
  94. KBUILD_CFLAGS += -mno-string
  95. ifeq ($(CONFIG_6xx),y)
  96. KBUILD_CFLAGS += -mcpu=powerpc
  97. endif
  98. cpu-as-$(CONFIG_4xx) += -Wa,-m405
  99. cpu-as-$(CONFIG_6xx) += -Wa,-maltivec
  100. cpu-as-$(CONFIG_POWER4) += -Wa,-maltivec
  101. cpu-as-$(CONFIG_E500) += -Wa,-me500
  102. cpu-as-$(CONFIG_E200) += -Wa,-me200
  103. KBUILD_AFLAGS += $(cpu-as-y)
  104. KBUILD_CFLAGS += $(cpu-as-y)
  105. head-y := arch/powerpc/kernel/head_$(CONFIG_WORD_SIZE).o
  106. head-$(CONFIG_8xx) := arch/powerpc/kernel/head_8xx.o
  107. head-$(CONFIG_40x) := arch/powerpc/kernel/head_40x.o
  108. head-$(CONFIG_44x) := arch/powerpc/kernel/head_44x.o
  109. head-$(CONFIG_FSL_BOOKE) := arch/powerpc/kernel/head_fsl_booke.o
  110. head-$(CONFIG_PPC64) += arch/powerpc/kernel/entry_64.o
  111. head-$(CONFIG_PPC_FPU) += arch/powerpc/kernel/fpu.o
  112. core-y += arch/powerpc/kernel/ \
  113. arch/powerpc/mm/ \
  114. arch/powerpc/lib/ \
  115. arch/powerpc/sysdev/ \
  116. arch/powerpc/platforms/
  117. core-$(CONFIG_MATH_EMULATION) += arch/powerpc/math-emu/
  118. core-$(CONFIG_XMON) += arch/powerpc/xmon/
  119. drivers-$(CONFIG_OPROFILE) += arch/powerpc/oprofile/
  120. # Default to zImage, override when needed
  121. defaultimage-y := zImage
  122. defaultimage-$(CONFIG_DEFAULT_UIMAGE) := uImage
  123. KBUILD_IMAGE := $(defaultimage-y)
  124. all: $(KBUILD_IMAGE)
  125. CPPFLAGS_vmlinux.lds := -Upowerpc
  126. BOOT_TARGETS = zImage zImage.initrd uImage
  127. PHONY += $(BOOT_TARGETS)
  128. boot := arch/$(ARCH)/boot
  129. $(BOOT_TARGETS): vmlinux
  130. $(Q)$(MAKE) ARCH=ppc64 $(build)=$(boot) $(patsubst %,$(boot)/%,$@)
  131. define archhelp
  132. @echo '* zImage - Compressed kernel image (arch/$(ARCH)/boot/zImage.*)'
  133. @echo ' install - Install kernel using'
  134. @echo ' (your) ~/bin/installkernel or'
  135. @echo ' (distribution) /sbin/installkernel or'
  136. @echo ' install to $$(INSTALL_PATH) and run lilo'
  137. @echo ' *_defconfig - Select default config from arch/$(ARCH)/configs'
  138. endef
  139. install: vdso_install
  140. $(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(KBUILD_IMAGE) install
  141. vdso_install:
  142. ifeq ($(CONFIG_PPC64),y)
  143. $(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso64 $@
  144. endif
  145. $(Q)$(MAKE) $(build)=arch/$(ARCH)/kernel/vdso32 $@
  146. archclean:
  147. $(Q)$(MAKE) $(clean)=$(boot)
  148. archprepare: checkbin
  149. # Use the file '.tmp_gas_check' for binutils tests, as gas won't output
  150. # to stdout and these checks are run even on install targets.
  151. TOUT := .tmp_gas_check
  152. # Ensure this is binutils 2.12.1 (or 2.12.90.0.7) or later for altivec
  153. # instructions.
  154. # gcc-3.4 and binutils-2.14 are a fatal combination.
  155. checkbin:
  156. @if test "$(call cc-version)" = "0304" ; then \
  157. if ! /bin/echo mftb 5 | $(AS) -v -mppc -many -o $(TOUT) >/dev/null 2>&1 ; then \
  158. echo -n '*** ${VERSION}.${PATCHLEVEL} kernels no longer build '; \
  159. echo 'correctly with gcc-3.4 and your version of binutils.'; \
  160. echo '*** Please upgrade your binutils or downgrade your gcc'; \
  161. false; \
  162. fi ; \
  163. fi
  164. @if test "$(call cc-fullversion)" = "040200" \
  165. && test "x${CONFIG_MODULES}${CONFIG_PPC64}" = "xyy" ; then \
  166. echo -n '*** GCC-4.2.0 cannot compile the 64-bit powerpc ' ; \
  167. echo 'kernel with modules enabled.' ; \
  168. echo -n '*** Please use a different GCC version or ' ; \
  169. echo 'disable kernel modules' ; \
  170. false ; \
  171. fi
  172. @if ! /bin/echo dssall | $(AS) -many -o $(TOUT) >/dev/null 2>&1 ; then \
  173. echo -n '*** ${VERSION}.${PATCHLEVEL} kernels no longer build ' ; \
  174. echo 'correctly with old versions of binutils.' ; \
  175. echo '*** Please upgrade your binutils to 2.12.1 or newer' ; \
  176. false ; \
  177. fi
  178. CLEAN_FILES += $(TOUT)