makefile

linux 内核源代码

#
# This file is subject to the terms and conditions of the GNU General Public
# License.  See the file "COPYING" in the main directory of this archive
# for more details.
#
# Copyright (C) 1994, 95, 96, 2003 by Ralf Baechle
# DECStation modifications by Paul M. Antoine, 1996
# Copyright (C) 2002, 2003, 2004  Maciej W. Rozycki
#
# This file is included by the global makefile so that you can add your own
# architecture-specific flags and dependencies. Remember to do have actions
# for "archclean" cleaning up for this architecture.
#

cflags-y :=

#
# Select the object file format to substitute into the linker script.
#
ifdef CONFIG_CPU_LITTLE_ENDIAN
32bit-tool-archpref	= mipsel
64bit-tool-archpref	= mips64el
32bit-bfd		= elf32-tradlittlemips
64bit-bfd		= elf64-tradlittlemips
32bit-emul		= elf32ltsmip
64bit-emul		= elf64ltsmip
else
32bit-tool-archpref	= mips
64bit-tool-archpref	= mips64
32bit-bfd		= elf32-tradbigmips
64bit-bfd		= elf64-tradbigmips
32bit-emul		= elf32btsmip
64bit-emul		= elf64btsmip
endif

ifdef CONFIG_32BIT
tool-archpref		= $(32bit-tool-archpref)
UTS_MACHINE		:= mips
endif
ifdef CONFIG_64BIT
tool-archpref		= $(64bit-tool-archpref)
UTS_MACHINE		:= mips64
endif

ifneq ($(SUBARCH),$(ARCH))
  ifeq ($(CROSS_COMPILE),)
    CROSS_COMPILE := $(call cc-cross-prefix, $(tool-archpref)-linux-  $(tool-archpref)-linux-gnu-  $(tool-archpref)-unknown-linux-gnu-)
  endif
endif

ifdef CONFIG_32BIT
ld-emul			= $(32bit-emul)
vmlinux-32		= vmlinux
vmlinux-64		= vmlinux.64

cflags-y		+= -mabi=32
endif

ifdef CONFIG_64BIT
ld-emul			= $(64bit-emul)
vmlinux-32		= vmlinux.32
vmlinux-64		= vmlinux

cflags-y		+= -mabi=64
endif

all-$(CONFIG_BOOT_ELF32)	:= $(vmlinux-32)
all-$(CONFIG_BOOT_ELF64)	:= $(vmlinux-64)

#
# GCC uses -G 0 -mabicalls -fpic as default.  We don't want PIC in the kernel
# code since it only slows down the whole thing.  At some point we might make
# use of global pointer optimizations but their use of $28 conflicts with
# the current pointer optimization.
#
# The DECStation requires an ECOFF kernel for remote booting, other MIPS
# machines may also.  Since BFD is incredibly buggy with respect to
# crossformat linking we rely on the elf2ecoff tool for format conversion.
#
cflags-y			+= -G 0 -mno-abicalls -fno-pic -pipe
cflags-y			+= -msoft-float
LDFLAGS_vmlinux			+= -G 0 -static -n -nostdlib
MODFLAGS			+= -mlong-calls

cflags-y += -ffreestanding

#
# We explicitly add the endianness specifier if needed, this allows
# to compile kernels with a toolchain for the other endianness. We
# carefully avoid to add it redundantly because gcc 3.3/3.4 complains
# when fed the toolchain default!
#
# Certain gcc versions upto gcc 4.1.1 (probably 4.2-subversion as of
# 2006-10-10 don't properly change the predefined symbols if -EB / -EL
# are used, so we kludge that here.  A bug has been filed at
# http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29413.
#
undef-all += -UMIPSEB -U_MIPSEB -U__MIPSEB -U__MIPSEB__
undef-all += -UMIPSEL -U_MIPSEL -U__MIPSEL -U__MIPSEL__
predef-be += -DMIPSEB -D_MIPSEB -D__MIPSEB -D__MIPSEB__
predef-le += -DMIPSEL -D_MIPSEL -D__MIPSEL -D__MIPSEL__
cflags-$(CONFIG_CPU_BIG_ENDIAN)		+= $(shell $(CC) -dumpmachine |grep -q 'mips.*el-.*' && echo -EB $(undef-all) $(predef-be))
cflags-$(CONFIG_CPU_LITTLE_ENDIAN)	+= $(shell $(CC) -dumpmachine |grep -q 'mips.*el-.*' || echo -EL $(undef-all) $(predef-le))

cflags-$(CONFIG_CPU_HAS_SMARTMIPS)	+= $(call cc-option,-msmartmips)

cflags-$(CONFIG_SB1XXX_CORELIS)	+= $(call cc-option,-mno-sched-prolog) \
				   -fno-omit-frame-pointer

#
# CPU-dependent compiler/assembler options for optimization.
#
cflags-$(CONFIG_CPU_R3000)	+= -march=r3000
cflags-$(CONFIG_CPU_TX39XX)	+= -march=r3900
cflags-$(CONFIG_CPU_R6000)	+= -march=r6000 -Wa,--trap
cflags-$(CONFIG_CPU_R4300)	+= -march=r4300 -Wa,--trap
cflags-$(CONFIG_CPU_VR41XX)	+= -march=r4100 -Wa,--trap
cflags-$(CONFIG_CPU_R4X00)	+= -march=r4600 -Wa,--trap
cflags-$(CONFIG_CPU_TX49XX)	+= -march=r4600 -Wa,--trap
cflags-$(CONFIG_CPU_LOONGSON2)	+= -march=r4600 -Wa,--trap
cflags-$(CONFIG_CPU_MIPS32_R1)	+= $(call cc-option,-march=mips32,-mips32 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS32) \
			-Wa,-mips32 -Wa,--trap
cflags-$(CONFIG_CPU_MIPS32_R2)	+= $(call cc-option,-march=mips32r2,-mips32r2 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS32) \
			-Wa,-mips32r2 -Wa,--trap
cflags-$(CONFIG_CPU_MIPS64_R1)	+= $(call cc-option,-march=mips64,-mips64 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS64) \
			-Wa,-mips64 -Wa,--trap
cflags-$(CONFIG_CPU_MIPS64_R2)	+= $(call cc-option,-march=mips64r2,-mips64r2 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS64) \
			-Wa,-mips64r2 -Wa,--trap
cflags-$(CONFIG_CPU_R5000)	+= -march=r5000 -Wa,--trap
cflags-$(CONFIG_CPU_R5432)	+= $(call cc-option,-march=r5400,-march=r5000) \
			-Wa,--trap
cflags-$(CONFIG_CPU_NEVADA)	+= $(call cc-option,-march=rm5200,-march=r5000) \
			-Wa,--trap
cflags-$(CONFIG_CPU_RM7000)	+= $(call cc-option,-march=rm7000,-march=r5000) \
			-Wa,--trap
cflags-$(CONFIG_CPU_RM9000)	+= $(call cc-option,-march=rm9000,-march=r5000) \
			-Wa,--trap
cflags-$(CONFIG_CPU_SB1)	+= $(call cc-option,-march=sb1,-march=r5000) \
			-Wa,--trap
cflags-$(CONFIG_CPU_R8000)	+= -march=r8000 -Wa,--trap
cflags-$(CONFIG_CPU_R10000)	+= $(call cc-option,-march=r10000,-march=r8000) \
			-Wa,--trap

ifdef CONFIG_CPU_SB1
ifdef CONFIG_SB1_PASS_1_WORKAROUNDS
MODFLAGS	+= -msb1-pass1-workarounds
endif
endif

#
# Firmware support
#
libs-$(CONFIG_ARC)		+= arch/mips/fw/arc/
libs-$(CONFIG_CFE)		+= arch/mips/fw/cfe/
libs-$(CONFIG_SIBYTE_CFE)	+= arch/mips/sibyte/cfe/

#
# Board-dependent options and extra files
#

#
# Acer PICA 61, Mips Magnum 4000 and Olivetti M700.
#
core-$(CONFIG_MACH_JAZZ)	+= arch/mips/jazz/
cflags-$(CONFIG_MACH_JAZZ)	+= -Iinclude/asm-mips/mach-jazz
load-$(CONFIG_MACH_JAZZ)	+= 0xffffffff80080000

#
# Common Alchemy Au1x00 stuff
#
core-$(CONFIG_SOC_AU1X00)	+= arch/mips/au1000/common/
cflags-$(CONFIG_SOC_AU1X00)	+= -Iinclude/asm-mips/mach-au1x00

#
# AMD Alchemy Pb1000 eval board
#
libs-$(CONFIG_MIPS_PB1000)	+= arch/mips/au1000/pb1000/
cflags-$(CONFIG_MIPS_PB1000)	+= -Iinclude/asm-mips/mach-pb1x00
load-$(CONFIG_MIPS_PB1000)	+= 0xffffffff80100000

#
# AMD Alchemy Pb1100 eval board
#
libs-$(CONFIG_MIPS_PB1100)	+= arch/mips/au1000/pb1100/
cflags-$(CONFIG_MIPS_PB1100)	+= -Iinclude/asm-mips/mach-pb1x00
load-$(CONFIG_MIPS_PB1100)	+= 0xffffffff80100000

#
# AMD Alchemy Pb1500 eval board
#
libs-$(CONFIG_MIPS_PB1500)	+= arch/mips/au1000/pb1500/
cflags-$(CONFIG_MIPS_PB1500)	+= -Iinclude/asm-mips/mach-pb1x00
load-$(CONFIG_MIPS_PB1500)	+= 0xffffffff80100000

#
# AMD Alchemy Pb1550 eval board
#
libs-$(CONFIG_MIPS_PB1550)	+= arch/mips/au1000/pb1550/
cflags-$(CONFIG_MIPS_PB1550)	+= -Iinclude/asm-mips/mach-pb1x00
load-$(CONFIG_MIPS_PB1550)	+= 0xffffffff80100000

#
# AMD Alchemy Pb1200 eval board
#
libs-$(CONFIG_MIPS_PB1200)	+= arch/mips/au1000/pb1200/
cflags-$(CONFIG_MIPS_PB1200)	+= -Iinclude/asm-mips/mach-pb1x00
load-$(CONFIG_MIPS_PB1200)	+= 0xffffffff80100000

#
# AMD Alchemy Db1000 eval board
#
libs-$(CONFIG_MIPS_DB1000)	+= arch/mips/au1000/db1x00/
cflags-$(CONFIG_MIPS_DB1000)	+= -Iinclude/asm-mips/mach-db1x00
load-$(CONFIG_MIPS_DB1000)	+= 0xffffffff80100000

#
# AMD Alchemy Db1100 eval board
#
libs-$(CONFIG_MIPS_DB1100)	+= arch/mips/au1000/db1x00/
cflags-$(CONFIG_MIPS_DB1100)	+= -Iinclude/asm-mips/mach-db1x00
load-$(CONFIG_MIPS_DB1100)	+= 0xffffffff80100000

#
# AMD Alchemy Db1500 eval board
#
libs-$(CONFIG_MIPS_DB1500)	+= arch/mips/au1000/db1x00/
cflags-$(CONFIG_MIPS_DB1500)	+= -Iinclude/asm-mips/mach-db1x00
load-$(CONFIG_MIPS_DB1500)	+= 0xffffffff80100000

#
# AMD Alchemy Db1550 eval board
#
libs-$(CONFIG_MIPS_DB1550)	+= arch/mips/au1000/db1x00/
cflags-$(CONFIG_MIPS_DB1550)	+= -Iinclude/asm-mips/mach-db1x00
load-$(CONFIG_MIPS_DB1550)	+= 0xffffffff80100000

#
# AMD Alchemy Db1200 eval board
#
libs-$(CONFIG_MIPS_DB1200)	+= arch/mips/au1000/pb1200/
cflags-$(CONFIG_MIPS_DB1200)	+= -Iinclude/asm-mips/mach-db1x00
load-$(CONFIG_MIPS_DB1200)	+= 0xffffffff80100000

#
# AMD Alchemy Bosporus eval board
#
libs-$(CONFIG_MIPS_BOSPORUS)	+= arch/mips/au1000/db1x00/
cflags-$(CONFIG_MIPS_BOSPORUS)	+= -Iinclude/asm-mips/mach-db1x00
load-$(CONFIG_MIPS_BOSPORUS)	+= 0xffffffff80100000

#
# AMD Alchemy Mirage eval board
#
libs-$(CONFIG_MIPS_MIRAGE)	+= arch/mips/au1000/db1x00/
cflags-$(CONFIG_MIPS_MIRAGE)	+= -Iinclude/asm-mips/mach-db1x00
load-$(CONFIG_MIPS_MIRAGE)	+= 0xffffffff80100000

#
# 4G-Systems eval board
#
libs-$(CONFIG_MIPS_MTX1)	+= arch/mips/au1000/mtx-1/
load-$(CONFIG_MIPS_MTX1)	+= 0xffffffff80100000

#
# MyCable eval board
#
libs-$(CONFIG_MIPS_XXS1500)	+= arch/mips/au1000/xxs1500/
load-$(CONFIG_MIPS_XXS1500)	+= 0xffffffff80100000

#
# Cobalt Server
#
core-$(CONFIG_MIPS_COBALT)	+= arch/mips/cobalt/
cflags-$(CONFIG_MIPS_COBALT)	+= -Iinclude/asm-mips/mach-cobalt
load-$(CONFIG_MIPS_COBALT)	+= 0xffffffff80080000

#
# DECstation family
#
core-$(CONFIG_MACH_DECSTATION)	+= arch/mips/dec/
cflags-$(CONFIG_MACH_DECSTATION)+= -Iinclude/asm-mips/mach-dec
libs-$(CONFIG_MACH_DECSTATION)	+= arch/mips/dec/prom/
load-$(CONFIG_MACH_DECSTATION)	+= 0xffffffff80040000

#
# Wind River PPMC Board (4KC + GT64120)
#
core-$(CONFIG_WR_PPMC)		+= arch/mips/gt64120/wrppmc/
cflags-$(CONFIG_WR_PPMC)		+= -Iinclude/asm-mips/mach-wrppmc
load-$(CONFIG_WR_PPMC)		+= 0xffffffff80100000

#
# lemote fulong mini-PC board
#
core-$(CONFIG_LEMOTE_FULONG) +=arch/mips/lemote/lm2e/
load-$(CONFIG_LEMOTE_FULONG) +=0xffffffff80100000
cflags-$(CONFIG_LEMOTE_FULONG) += -Iinclude/asm-mips/mach-lemote

#
# For all MIPS, Inc. eval boards
#
core-$(CONFIG_MIPS_BOARDS_GEN)	+= arch/mips/mips-boards/generic/

#
# MIPS Atlas board
#
core-$(CONFIG_MIPS_ATLAS)	+= arch/mips/mips-boards/atlas/
cflags-$(CONFIG_MIPS_ATLAS)	+= -Iinclude/asm-mips/mach-atlas
cflags-$(CONFIG_MIPS_ATLAS)	+= -Iinclude/asm-mips/mach-mips
load-$(CONFIG_MIPS_ATLAS)	+= 0xffffffff80100000
all-$(CONFIG_MIPS_ATLAS)	:= vmlinux.srec

#
# MIPS Malta board
#
core-$(CONFIG_MIPS_MALTA)	+= arch/mips/mips-boards/malta/
cflags-$(CONFIG_MIPS_MALTA)	+= -Iinclude/asm-mips/mach-mips
load-$(CONFIG_MIPS_MALTA)	+= 0xffffffff80100000
all-$(CONFIG_MIPS_MALTA)	:= vmlinux.srec

#
# MIPS SEAD board
#
core-$(CONFIG_MIPS_SEAD)	+= arch/mips/mips-boards/sead/
cflags-$(CONFIG_MIPS_SEAD)	+= -Iinclude/asm-mips/mach-mips
load-$(CONFIG_MIPS_SEAD)	+= 0xffffffff80100000
all-$(CONFIG_MIPS_SEAD)		:= vmlinux.srec

#
# MIPS SIM
#
core-$(CONFIG_MIPS_SIM)		+= arch/mips/mipssim/
cflags-$(CONFIG_MIPS_SIM)	+= -Iinclude/asm-mips/mach-mipssim
load-$(CONFIG_MIPS_SIM)		+= 0x80100000

#
# PMC-Sierra MSP SOCs
#
core-$(CONFIG_PMC_MSP)		+= arch/mips/pmc-sierra/msp71xx/
cflags-$(CONFIG_PMC_MSP)	+= -Iinclude/asm-mips/pmc-sierra/msp71xx \
					-mno-branch-likely
load-$(CONFIG_PMC_MSP)		+= 0xffffffff80100000

#
# PMC-Sierra Yosemite
#
core-$(CONFIG_PMC_YOSEMITE)	+= arch/mips/pmc-sierra/yosemite/
cflags-$(CONFIG_PMC_YOSEMITE)	+= -Iinclude/asm-mips/mach-yosemite
load-$(CONFIG_PMC_YOSEMITE)	+= 0xffffffff80100000

#
# Qemu simulating MIPS32 4Kc
#
core-$(CONFIG_QEMU)		+= arch/mips/qemu/
cflags-$(CONFIG_QEMU)		+= -Iinclude/asm-mips/mach-qemu