linux/arch/mips/Makefile
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   1#
   2# This file is subject to the terms and conditions of the GNU General Public
   3# License.  See the file "COPYING" in the main directory of this archive
   4# for more details.
   5#
   6# Copyright (C) 1994, 95, 96, 2003 by Ralf Baechle
   7# DECStation modifications by Paul M. Antoine, 1996
   8# Copyright (C) 2002, 2003, 2004  Maciej W. Rozycki
   9#
  10# This file is included by the global makefile so that you can add your own
  11# architecture-specific flags and dependencies. Remember to do have actions
  12# for "archclean" cleaning up for this architecture.
  13#
  14
  15KBUILD_DEFCONFIG := ip22_defconfig
  16
  17#
  18# Select the object file format to substitute into the linker script.
  19#
  20ifdef CONFIG_CPU_LITTLE_ENDIAN
  2132bit-tool-archpref     = mipsel
  2264bit-tool-archpref     = mips64el
  2332bit-bfd               = elf32-tradlittlemips
  2464bit-bfd               = elf64-tradlittlemips
  2532bit-emul              = elf32ltsmip
  2664bit-emul              = elf64ltsmip
  27else
  2832bit-tool-archpref     = mips
  2964bit-tool-archpref     = mips64
  3032bit-bfd               = elf32-tradbigmips
  3164bit-bfd               = elf64-tradbigmips
  3232bit-emul              = elf32btsmip
  3364bit-emul              = elf64btsmip
  34endif
  35
  36ifdef CONFIG_32BIT
  37tool-archpref           = $(32bit-tool-archpref)
  38UTS_MACHINE             := mips
  39endif
  40ifdef CONFIG_64BIT
  41tool-archpref           = $(64bit-tool-archpref)
  42UTS_MACHINE             := mips64
  43endif
  44
  45ifneq ($(SUBARCH),$(ARCH))
  46  ifeq ($(CROSS_COMPILE),)
  47    CROSS_COMPILE := $(call cc-cross-prefix, $(tool-archpref)-linux-  $(tool-archpref)-linux-gnu-  $(tool-archpref)-unknown-linux-gnu-)
  48  endif
  49endif
  50
  51ifdef CONFIG_FUNCTION_GRAPH_TRACER
  52  ifndef KBUILD_MCOUNT_RA_ADDRESS
  53    ifeq ($(call cc-option-yn,-mmcount-ra-address), y)
  54      cflags-y += -mmcount-ra-address -DKBUILD_MCOUNT_RA_ADDRESS
  55    endif
  56  endif
  57endif
  58cflags-y += $(call cc-option, -mno-check-zero-division)
  59
  60ifdef CONFIG_32BIT
  61ld-emul                 = $(32bit-emul)
  62vmlinux-32              = vmlinux
  63vmlinux-64              = vmlinux.64
  64
  65cflags-y                += -mabi=32
  66endif
  67
  68ifdef CONFIG_64BIT
  69ld-emul                 = $(64bit-emul)
  70vmlinux-32              = vmlinux.32
  71vmlinux-64              = vmlinux
  72
  73cflags-y                += -mabi=64
  74endif
  75
  76all-$(CONFIG_BOOT_ELF32)        := $(vmlinux-32)
  77all-$(CONFIG_BOOT_ELF64)        := $(vmlinux-64)
  78all-$(CONFIG_SYS_SUPPORTS_ZBOOT)+= vmlinuz
  79
  80#
  81# GCC uses -G 0 -mabicalls -fpic as default.  We don't want PIC in the kernel
  82# code since it only slows down the whole thing.  At some point we might make
  83# use of global pointer optimizations but their use of $28 conflicts with
  84# the current pointer optimization.
  85#
  86# The DECStation requires an ECOFF kernel for remote booting, other MIPS
  87# machines may also.  Since BFD is incredibly buggy with respect to
  88# crossformat linking we rely on the elf2ecoff tool for format conversion.
  89#
  90cflags-y                        += -G 0 -mno-abicalls -fno-pic -pipe
  91cflags-y                        += -msoft-float
  92LDFLAGS_vmlinux                 += -G 0 -static -n -nostdlib
  93KBUILD_AFLAGS_MODULE            += -mlong-calls
  94KBUILD_CFLAGS_MODULE            += -mlong-calls
  95
  96cflags-y += -ffreestanding
  97
  98#
  99# We explicitly add the endianness specifier if needed, this allows
 100# to compile kernels with a toolchain for the other endianness. We
 101# carefully avoid to add it redundantly because gcc 3.3/3.4 complains
 102# when fed the toolchain default!
 103#
 104# Certain gcc versions up to gcc 4.1.1 (probably 4.2-subversion as of
 105# 2006-10-10 don't properly change the predefined symbols if -EB / -EL
 106# are used, so we kludge that here.  A bug has been filed at
 107# http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29413.
 108#
 109undef-all += -UMIPSEB -U_MIPSEB -U__MIPSEB -U__MIPSEB__
 110undef-all += -UMIPSEL -U_MIPSEL -U__MIPSEL -U__MIPSEL__
 111predef-be += -DMIPSEB -D_MIPSEB -D__MIPSEB -D__MIPSEB__
 112predef-le += -DMIPSEL -D_MIPSEL -D__MIPSEL -D__MIPSEL__
 113cflags-$(CONFIG_CPU_BIG_ENDIAN)         += $(shell $(CC) -dumpmachine |grep -q 'mips.*el-.*' && echo -EB $(undef-all) $(predef-be))
 114cflags-$(CONFIG_CPU_LITTLE_ENDIAN)      += $(shell $(CC) -dumpmachine |grep -q 'mips.*el-.*' || echo -EL $(undef-all) $(predef-le))
 115
 116cflags-$(CONFIG_CPU_HAS_SMARTMIPS)      += $(call cc-option,-msmartmips)
 117
 118cflags-$(CONFIG_SB1XXX_CORELIS) += $(call cc-option,-mno-sched-prolog) \
 119                                   -fno-omit-frame-pointer
 120
 121#
 122# CPU-dependent compiler/assembler options for optimization.
 123#
 124cflags-$(CONFIG_CPU_R3000)      += -march=r3000
 125cflags-$(CONFIG_CPU_TX39XX)     += -march=r3900
 126cflags-$(CONFIG_CPU_R6000)      += -march=r6000 -Wa,--trap
 127cflags-$(CONFIG_CPU_R4300)      += -march=r4300 -Wa,--trap
 128cflags-$(CONFIG_CPU_VR41XX)     += -march=r4100 -Wa,--trap
 129cflags-$(CONFIG_CPU_R4X00)      += -march=r4600 -Wa,--trap
 130cflags-$(CONFIG_CPU_TX49XX)     += -march=r4600 -Wa,--trap
 131cflags-$(CONFIG_CPU_MIPS32_R1)  += $(call cc-option,-march=mips32,-mips32 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS32) \
 132                        -Wa,-mips32 -Wa,--trap
 133cflags-$(CONFIG_CPU_MIPS32_R2)  += $(call cc-option,-march=mips32r2,-mips32r2 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS32) \
 134                        -Wa,-mips32r2 -Wa,--trap
 135cflags-$(CONFIG_CPU_MIPS64_R1)  += $(call cc-option,-march=mips64,-mips64 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS64) \
 136                        -Wa,-mips64 -Wa,--trap
 137cflags-$(CONFIG_CPU_MIPS64_R2)  += $(call cc-option,-march=mips64r2,-mips64r2 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS64) \
 138                        -Wa,-mips64r2 -Wa,--trap
 139cflags-$(CONFIG_CPU_R5000)      += -march=r5000 -Wa,--trap
 140cflags-$(CONFIG_CPU_R5432)      += $(call cc-option,-march=r5400,-march=r5000) \
 141                        -Wa,--trap
 142cflags-$(CONFIG_CPU_R5500)      += $(call cc-option,-march=r5500,-march=r5000) \
 143                        -Wa,--trap
 144cflags-$(CONFIG_CPU_NEVADA)     += $(call cc-option,-march=rm5200,-march=r5000) \
 145                        -Wa,--trap
 146cflags-$(CONFIG_CPU_RM7000)     += $(call cc-option,-march=rm7000,-march=r5000) \
 147                        -Wa,--trap
 148cflags-$(CONFIG_CPU_RM9000)     += $(call cc-option,-march=rm9000,-march=r5000) \
 149                        -Wa,--trap
 150cflags-$(CONFIG_CPU_SB1)        += $(call cc-option,-march=sb1,-march=r5000) \
 151                        -Wa,--trap
 152cflags-$(CONFIG_CPU_R8000)      += -march=r8000 -Wa,--trap
 153cflags-$(CONFIG_CPU_R10000)     += $(call cc-option,-march=r10000,-march=r8000) \
 154                        -Wa,--trap
 155cflags-$(CONFIG_CPU_CAVIUM_OCTEON) += $(call cc-option,-march=octeon) -Wa,--trap
 156ifeq (,$(findstring march=octeon, $(cflags-$(CONFIG_CPU_CAVIUM_OCTEON))))
 157cflags-$(CONFIG_CPU_CAVIUM_OCTEON) += -Wa,-march=octeon
 158endif
 159cflags-$(CONFIG_CAVIUM_CN63XXP1) += -Wa,-mfix-cn63xxp1
 160cflags-$(CONFIG_CPU_BMIPS)      += -march=mips32 -Wa,-mips32 -Wa,--trap
 161
 162cflags-$(CONFIG_CPU_R4000_WORKAROUNDS)  += $(call cc-option,-mfix-r4000,)
 163cflags-$(CONFIG_CPU_R4400_WORKAROUNDS)  += $(call cc-option,-mfix-r4400,)
 164cflags-$(CONFIG_CPU_DADDI_WORKAROUNDS)  += $(call cc-option,-mno-daddi,)
 165
 166ifdef CONFIG_CPU_SB1
 167ifdef CONFIG_SB1_PASS_1_WORKAROUNDS
 168KBUILD_AFLAGS_MODULE += -msb1-pass1-workarounds
 169KBUILD_CFLAGS_MODULE += -msb1-pass1-workarounds
 170endif
 171endif
 172
 173#
 174# Firmware support
 175#
 176libs-$(CONFIG_ARC)              += arch/mips/fw/arc/
 177libs-$(CONFIG_CFE)              += arch/mips/fw/cfe/
 178libs-$(CONFIG_SNIPROM)          += arch/mips/fw/sni/
 179libs-y                          += arch/mips/fw/lib/
 180
 181#
 182# Kernel compression
 183#
 184ifdef SYS_SUPPORTS_ZBOOT
 185COMPRESSION_FNAME               = vmlinuz
 186else
 187COMPRESSION_FNAME               = vmlinux
 188endif
 189
 190#
 191# Board-dependent options and extra files
 192#
 193include $(srctree)/arch/mips/Kbuild.platforms
 194
 195cflags-y                        += -I$(srctree)/arch/mips/include/asm/mach-generic
 196drivers-$(CONFIG_PCI)           += arch/mips/pci/
 197
 198#
 199# Automatically detect the build format. By default we choose
 200# the elf format according to the load address.
 201# We can always force a build with a 64-bits symbol format by
 202# passing 'KBUILD_SYM32=no' option to the make's command line.
 203#
 204ifdef CONFIG_64BIT
 205  ifndef KBUILD_SYM32
 206    ifeq ($(shell expr $(load-y) \< 0xffffffff80000000), 0)
 207      KBUILD_SYM32 = y
 208    endif
 209  endif
 210
 211  ifeq ($(KBUILD_SYM32)$(call cc-option-yn,-msym32), yy)
 212    cflags-y += -msym32 -DKBUILD_64BIT_SYM32
 213  else
 214    ifeq ($(CONFIG_CPU_DADDI_WORKAROUNDS), y)
 215      $(error CONFIG_CPU_DADDI_WORKAROUNDS unsupported without -msym32)
 216    endif
 217  endif
 218endif
 219
 220KBUILD_AFLAGS   += $(cflags-y)
 221KBUILD_CFLAGS   += $(cflags-y)
 222KBUILD_CPPFLAGS += -DVMLINUX_LOAD_ADDRESS=$(load-y)
 223KBUILD_CPPFLAGS += -DDATAOFFSET=$(if $(dataoffset-y),$(dataoffset-y),0)
 224
 225LDFLAGS                 += -m $(ld-emul)
 226
 227ifdef CONFIG_MIPS
 228CHECKFLAGS += $(shell $(CC) $(KBUILD_CFLAGS) -dM -E -x c /dev/null | \
 229        egrep -vw '__GNUC_(|MINOR_|PATCHLEVEL_)_' | \
 230        sed -e "s/^\#define /-D'/" -e "s/ /'='/" -e "s/$$/'/")
 231ifdef CONFIG_64BIT
 232CHECKFLAGS              += -m64
 233endif
 234endif
 235
 236OBJCOPYFLAGS            += --remove-section=.reginfo
 237
 238head-y := arch/mips/kernel/head.o
 239
 240libs-y                  += arch/mips/lib/
 241
 242# See arch/mips/Kbuild for content of core part of the kernel
 243core-y += arch/mips/
 244
 245drivers-$(CONFIG_OPROFILE)      += arch/mips/oprofile/
 246
 247# suspend and hibernation support
 248drivers-$(CONFIG_PM)    += arch/mips/power/
 249
 250ifdef CONFIG_LASAT
 251rom.bin rom.sw: vmlinux
 252        $(Q)$(MAKE) $(build)=arch/mips/lasat/image $@
 253endif
 254
 255#
 256# Some machines like the Indy need 32-bit ELF binaries for booting purposes.
 257# Other need ECOFF, so we build a 32-bit ELF binary for them which we then
 258# convert to ECOFF using elf2ecoff.
 259#
 260vmlinux.32: vmlinux
 261        $(OBJCOPY) -O $(32bit-bfd) $(OBJCOPYFLAGS) $< $@
 262
 263
 264#obj-$(CONFIG_KPROBES)          += kprobes.o
 265
 266#
 267# The 64-bit ELF tools are pretty broken so at this time we generate 64-bit
 268# ELF files from 32-bit files by conversion.
 269#
 270vmlinux.64: vmlinux
 271        $(OBJCOPY) -O $(64bit-bfd) $(OBJCOPYFLAGS) $< $@
 272
 273all:    $(all-y)
 274
 275# boot
 276vmlinux.bin vmlinux.ecoff vmlinux.srec: $(vmlinux-32) FORCE
 277        $(Q)$(MAKE) $(build)=arch/mips/boot VMLINUX=$(vmlinux-32) arch/mips/boot/$@
 278
 279# boot/compressed
 280vmlinuz vmlinuz.bin vmlinuz.ecoff vmlinuz.srec: $(vmlinux-32) FORCE
 281        $(Q)$(MAKE) $(build)=arch/mips/boot/compressed \
 282           VMLINUX_LOAD_ADDRESS=$(load-y) 32bit-bfd=$(32bit-bfd) $@
 283
 284
 285CLEAN_FILES += vmlinux.32 vmlinux.64
 286
 287archprepare:
 288ifdef CONFIG_MIPS32_N32
 289        @echo '  Checking missing-syscalls for N32'
 290        $(Q)$(MAKE) $(build)=. missing-syscalls missing_syscalls_flags="-mabi=n32"
 291endif
 292ifdef CONFIG_MIPS32_O32
 293        @echo '  Checking missing-syscalls for O32'
 294        $(Q)$(MAKE) $(build)=. missing-syscalls missing_syscalls_flags="-mabi=32"
 295endif
 296
 297install:
 298        $(Q)install -D -m 755 vmlinux $(INSTALL_PATH)/vmlinux-$(KERNELRELEASE)
 299ifdef CONFIG_SYS_SUPPORTS_ZBOOT
 300        $(Q)install -D -m 755 vmlinuz $(INSTALL_PATH)/vmlinuz-$(KERNELRELEASE)
 301endif
 302        $(Q)install -D -m 644 .config $(INSTALL_PATH)/config-$(KERNELRELEASE)
 303        $(Q)install -D -m 644 System.map $(INSTALL_PATH)/System.map-$(KERNELRELEASE)
 304
 305archclean:
 306        $(Q)$(MAKE) $(clean)=arch/mips/boot
 307        $(Q)$(MAKE) $(clean)=arch/mips/boot/compressed
 308        $(Q)$(MAKE) $(clean)=arch/mips/lasat
 309
 310define archhelp
 311        echo '  install              - install kernel into $(INSTALL_PATH)'
 312        echo '  vmlinux.ecoff        - ECOFF boot image'
 313        echo '  vmlinux.bin          - Raw binary boot image'
 314        echo '  vmlinux.srec         - SREC boot image'
 315        echo '  vmlinuz              - Compressed boot(zboot) image'
 316        echo '  vmlinuz.ecoff        - ECOFF zboot image'
 317        echo '  vmlinuz.bin          - Raw binary zboot image'
 318        echo '  vmlinuz.srec         - SREC zboot image'
 319        echo
 320        echo '  These will be default as appropriate for a configured platform.'
 321endef
 322
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