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#
# 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.
#

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KBUILD_DEFCONFIG := ip22_defconfig

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

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

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

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ifndef CONFIG_FUNCTION_TRACER
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cflags-y := -ffunction-sections
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endif
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ifdef CONFIG_FUNCTION_GRAPH_TRACER
  ifndef KBUILD_MCOUNT_RA_ADDRESS
    ifeq ($(call cc-option-yn,-mmcount-ra-address), y)
      cflags-y += -mmcount-ra-address -DKBUILD_MCOUNT_RA_ADDRESS
    endif
  endif
endif
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cflags-y += $(call cc-option, -mno-check-zero-division)
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ifdef CONFIG_32BIT
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ld-emul			= $(32bit-emul)
vmlinux-32		= vmlinux
vmlinux-64		= vmlinux.64
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cflags-y		+= -mabi=32
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endif
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ifdef CONFIG_64BIT
ld-emul			= $(64bit-emul)
vmlinux-32		= vmlinux.32
vmlinux-64		= vmlinux

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cflags-y		+= -mabi=64
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endif

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all-$(CONFIG_BOOT_ELF32)	:= $(vmlinux-32)
all-$(CONFIG_BOOT_ELF64)	:= $(vmlinux-64)
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all-$(CONFIG_SYS_SUPPORTS_ZBOOT)+= vmlinuz
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#
# 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
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cflags-y			+= -msoft-float
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LDFLAGS_vmlinux			+= -G 0 -static -n -nostdlib
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MODFLAGS			+= -mlong-calls

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cflags-y += -ffreestanding

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#
# 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!
#
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# Certain gcc versions upto gcc 4.1.1 (probably 4.2-subversion as of
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# 2006-10-10 don't properly change the predefined symbols if -EB / -EL
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# 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) $(predef-le))
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cflags-$(CONFIG_CPU_HAS_SMARTMIPS)	+= $(call cc-option,-msmartmips)

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cflags-$(CONFIG_SB1XXX_CORELIS)	+= $(call cc-option,-mno-sched-prolog) \
				   -fno-omit-frame-pointer
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#
# CPU-dependent compiler/assembler options for optimization.
#
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cflags-$(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
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cflags-$(CONFIG_CPU_MIPS32_R1)	+= $(call cc-option,-march=mips32,-mips32 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS32) \
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			-Wa,-mips32 -Wa,--trap
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cflags-$(CONFIG_CPU_MIPS32_R2)	+= $(call cc-option,-march=mips32r2,-mips32r2 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS32) \
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			-Wa,-mips32r2 -Wa,--trap
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cflags-$(CONFIG_CPU_MIPS64_R1)	+= $(call cc-option,-march=mips64,-mips64 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS64) \
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			-Wa,-mips64 -Wa,--trap
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cflags-$(CONFIG_CPU_MIPS64_R2)	+= $(call cc-option,-march=mips64r2,-mips64r2 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS64) \
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			-Wa,-mips64r2 -Wa,--trap
cflags-$(CONFIG_CPU_R5000)	+= -march=r5000 -Wa,--trap
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cflags-$(CONFIG_CPU_R5432)	+= $(call cc-option,-march=r5400,-march=r5000) \
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			-Wa,--trap
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cflags-$(CONFIG_CPU_R5500)	+= $(call cc-option,-march=r5500,-march=r5000) \
			-Wa,--trap
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cflags-$(CONFIG_CPU_NEVADA)	+= $(call cc-option,-march=rm5200,-march=r5000) \
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			-Wa,--trap
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cflags-$(CONFIG_CPU_RM7000)	+= $(call cc-option,-march=rm7000,-march=r5000) \
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			-Wa,--trap
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cflags-$(CONFIG_CPU_RM9000)	+= $(call cc-option,-march=rm9000,-march=r5000) \
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			-Wa,--trap
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cflags-$(CONFIG_CPU_SB1)	+= $(call cc-option,-march=sb1,-march=r5000) \
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			-Wa,--trap
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cflags-$(CONFIG_CPU_R8000)	+= -march=r8000 -Wa,--trap
cflags-$(CONFIG_CPU_R10000)	+= $(call cc-option,-march=r10000,-march=r8000) \
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			-Wa,--trap
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cflags-$(CONFIG_CPU_CAVIUM_OCTEON) += $(call cc-option,-march=octeon) -Wa,--trap
ifeq (,$(findstring march=octeon, $(cflags-$(CONFIG_CPU_CAVIUM_OCTEON))))
cflags-$(CONFIG_CPU_CAVIUM_OCTEON) += -Wa,-march=octeon
endif
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cflags-$(CONFIG_CPU_R4000_WORKAROUNDS)	+= $(call cc-option,-mfix-r4000,)
cflags-$(CONFIG_CPU_R4400_WORKAROUNDS)	+= $(call cc-option,-mfix-r4400,)
cflags-$(CONFIG_CPU_DADDI_WORKAROUNDS)	+= $(call cc-option,-mno-daddi,)

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

#
# Firmware support
#
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libs-$(CONFIG_ARC)		+= arch/mips/fw/arc/
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libs-$(CONFIG_CFE)		+= arch/mips/fw/cfe/
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libs-$(CONFIG_SNIPROM)		+= arch/mips/fw/sni/
libs-y				+= arch/mips/fw/lib/
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#
# Kernel compression
#
ifdef SYS_SUPPORTS_ZBOOT
COMPRESSION_FNAME		= vmlinuz
else
COMPRESSION_FNAME		= vmlinux
endif

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#
# Board-dependent options and extra files
#
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include $(srctree)/arch/mips/Kbuild.platforms
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# NXP STB225
core-$(CONFIG_SOC_PNX833X)		+= arch/mips/nxp/pnx833x/common/
cflags-$(CONFIG_SOC_PNX833X)	+= -Iarch/mips/include/asm/mach-pnx833x
libs-$(CONFIG_NXP_STB220)		+= arch/mips/nxp/pnx833x/stb22x/
load-$(CONFIG_NXP_STB220)		+= 0xffffffff80001000
libs-$(CONFIG_NXP_STB225)		+= arch/mips/nxp/pnx833x/stb22x/
load-$(CONFIG_NXP_STB225)		+= 0xffffffff80001000

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#
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# Common NXP PNX8550
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#
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core-$(CONFIG_SOC_PNX8550)	+= arch/mips/nxp/pnx8550/common/
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cflags-$(CONFIG_SOC_PNX8550)	+= -I$(srctree)/arch/mips/include/asm/mach-pnx8550
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#
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# NXP PNX8550 JBS board
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#
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libs-$(CONFIG_PNX8550_JBS)	+= arch/mips/nxp/pnx8550/jbs/
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#cflags-$(CONFIG_PNX8550_JBS)	+= -I$(srctree)/arch/mips/include/asm/mach-pnx8550
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load-$(CONFIG_PNX8550_JBS)	+= 0xffffffff80060000

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# NXP PNX8550 STB810 board
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#
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libs-$(CONFIG_PNX8550_STB810)	+= arch/mips/nxp/pnx8550/stb810/
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load-$(CONFIG_PNX8550_STB810)	+= 0xffffffff80060000

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#
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# Common NEC EMMAXXX
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#
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core-$(CONFIG_SOC_EMMA2RH)	+= arch/mips/emma/common/
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cflags-$(CONFIG_SOC_EMMA2RH)	+= -I$(srctree)/arch/mips/include/asm/mach-emma2rh
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#
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# NEC EMMA2RH Mark-eins
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#
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core-$(CONFIG_NEC_MARKEINS)	+= arch/mips/emma/markeins/
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load-$(CONFIG_NEC_MARKEINS)	+= 0xffffffff88100000
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#
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# Sibyte SB1250/BCM1480 SOC
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#
# This is a LIB so that it links at the end, and initcalls are later
# the sequence; but it is built as an object so that modules don't get
# removed (as happens, even if they have __initcall/module_init)
#
core-$(CONFIG_SIBYTE_BCM112X)	+= arch/mips/sibyte/sb1250/
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core-$(CONFIG_SIBYTE_BCM112X)	+= arch/mips/sibyte/common/
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cflags-$(CONFIG_SIBYTE_BCM112X)	+= -I$(srctree)/arch/mips/include/asm/mach-sibyte \
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			-DSIBYTE_HDR_FEATURES=SIBYTE_HDR_FMASK_1250_112x_ALL
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core-$(CONFIG_SIBYTE_SB1250)	+= arch/mips/sibyte/sb1250/
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core-$(CONFIG_SIBYTE_SB1250)	+= arch/mips/sibyte/common/
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cflags-$(CONFIG_SIBYTE_SB1250)	+= -I$(srctree)/arch/mips/include/asm/mach-sibyte \
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			-DSIBYTE_HDR_FEATURES=SIBYTE_HDR_FMASK_1250_112x_ALL

core-$(CONFIG_SIBYTE_BCM1x55)	+= arch/mips/sibyte/bcm1480/
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core-$(CONFIG_SIBYTE_BCM1x55)	+= arch/mips/sibyte/common/
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cflags-$(CONFIG_SIBYTE_BCM1x55)	+= -I$(srctree)/arch/mips/include/asm/mach-sibyte \
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			-DSIBYTE_HDR_FEATURES=SIBYTE_HDR_FMASK_1480_ALL

core-$(CONFIG_SIBYTE_BCM1x80)	+= arch/mips/sibyte/bcm1480/
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core-$(CONFIG_SIBYTE_BCM1x80)	+= arch/mips/sibyte/common/
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cflags-$(CONFIG_SIBYTE_BCM1x80)	+= -I$(srctree)/arch/mips/include/asm/mach-sibyte \
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			-DSIBYTE_HDR_FEATURES=SIBYTE_HDR_FMASK_1480_ALL
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#
# Sibyte BCM91120x (Carmel) board
# Sibyte BCM91120C (CRhine) board
# Sibyte BCM91125C (CRhone) board
# Sibyte BCM91125E (Rhone) board
# Sibyte SWARM board
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# Sibyte BCM91x80 (BigSur) board
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#
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core-$(CONFIG_SIBYTE_CARMEL)	+= arch/mips/sibyte/swarm/
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load-$(CONFIG_SIBYTE_CARMEL)	:= 0xffffffff80100000
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core-$(CONFIG_SIBYTE_CRHINE)	+= arch/mips/sibyte/swarm/
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load-$(CONFIG_SIBYTE_CRHINE)	:= 0xffffffff80100000
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core-$(CONFIG_SIBYTE_CRHONE)	+= arch/mips/sibyte/swarm/
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load-$(CONFIG_SIBYTE_CRHONE)	:= 0xffffffff80100000
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core-$(CONFIG_SIBYTE_RHONE)	+= arch/mips/sibyte/swarm/
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load-$(CONFIG_SIBYTE_RHONE)	:= 0xffffffff80100000
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core-$(CONFIG_SIBYTE_SENTOSA)	+= arch/mips/sibyte/swarm/
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load-$(CONFIG_SIBYTE_SENTOSA)	:= 0xffffffff80100000
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core-$(CONFIG_SIBYTE_SWARM)	+= arch/mips/sibyte/swarm/
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load-$(CONFIG_SIBYTE_SWARM)	:= 0xffffffff80100000
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core-$(CONFIG_SIBYTE_BIGSUR)	+= arch/mips/sibyte/swarm/
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load-$(CONFIG_SIBYTE_BIGSUR)	:= 0xffffffff80100000
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#
# Common TXx9
#
core-$(CONFIG_MACH_TX39XX)	+= arch/mips/txx9/generic/
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cflags-$(CONFIG_MACH_TX39XX) += -I$(srctree)/arch/mips/include/asm/mach-tx39xx
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load-$(CONFIG_MACH_TX39XX)	+= 0xffffffff80050000
core-$(CONFIG_MACH_TX49XX)	+= arch/mips/txx9/generic/
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cflags-$(CONFIG_MACH_TX49XX) += -I$(srctree)/arch/mips/include/asm/mach-tx49xx
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load-$(CONFIG_MACH_TX49XX)	+= 0xffffffff80100000

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#
# Toshiba JMR-TX3927 board
#
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core-$(CONFIG_TOSHIBA_JMR3927)	+= arch/mips/txx9/jmr3927/
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#
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# Toshiba RBTX49XX boards
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#
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core-$(CONFIG_TOSHIBA_RBTX4927)	+= arch/mips/txx9/rbtx4927/
core-$(CONFIG_TOSHIBA_RBTX4938) += arch/mips/txx9/rbtx4938/
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core-$(CONFIG_TOSHIBA_RBTX4939) += arch/mips/txx9/rbtx4939/
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#
# Cavium Octeon
#
core-$(CONFIG_CPU_CAVIUM_OCTEON)	+= arch/mips/cavium-octeon/
cflags-$(CONFIG_CPU_CAVIUM_OCTEON)	+= -I$(srctree)/arch/mips/include/asm/mach-cavium-octeon
core-$(CONFIG_CPU_CAVIUM_OCTEON)	+= arch/mips/cavium-octeon/executive/
ifdef CONFIG_CAVIUM_OCTEON_2ND_KERNEL
load-$(CONFIG_CPU_CAVIUM_OCTEON)	+= 0xffffffff84100000
else
load-$(CONFIG_CPU_CAVIUM_OCTEON) 	+= 0xffffffff81100000
endif

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cflags-y			+= -I$(srctree)/arch/mips/include/asm/mach-generic
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drivers-$(CONFIG_PCI)		+= arch/mips/pci/

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#
# Automatically detect the build format. By default we choose
# the elf format according to the load address.
# We can always force a build with a 64-bits symbol format by
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# passing 'KBUILD_SYM32=no' option to the make's command line.
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#
ifdef CONFIG_64BIT
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  ifndef KBUILD_SYM32
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    ifeq ($(shell expr $(load-y) \< 0xffffffff80000000), 0)
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      KBUILD_SYM32 = y
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    endif
  endif

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  ifeq ($(KBUILD_SYM32)$(call cc-option-yn,-msym32), yy)
    cflags-y += -msym32 -DKBUILD_64BIT_SYM32
  else
    ifeq ($(CONFIG_CPU_DADDI_WORKAROUNDS), y)
      $(error CONFIG_CPU_DADDI_WORKAROUNDS unsupported without -msym32)
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    endif
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  endif
endif

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KBUILD_AFLAGS	+= $(cflags-y)
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KBUILD_CFLAGS	+= $(cflags-y)
KBUILD_CPPFLAGS += -D"VMLINUX_LOAD_ADDRESS=$(load-y)"
KBUILD_CPPFLAGS += -D"DATAOFFSET=$(if $(dataoffset-y),$(dataoffset-y),0)"
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LDFLAGS			+= -m $(ld-emul)

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ifdef CONFIG_MIPS
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CHECKFLAGS += $(shell $(CC) $(KBUILD_CFLAGS) -dM -E -xc /dev/null | \
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	egrep -vw '__GNUC_(|MINOR_|PATCHLEVEL_)_' | \
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	sed -e 's/^\#define /-D/' -e "s/ /='/" -e "s/$$/'/")
ifdef CONFIG_64BIT
CHECKFLAGS		+= -m64
endif
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endif

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OBJCOPYFLAGS		+= --remove-section=.reginfo

head-y := arch/mips/kernel/head.o arch/mips/kernel/init_task.o

libs-y			+= arch/mips/lib/

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# See arch/mips/Kbuild for content of core part of the kernel
core-y += arch/mips/
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drivers-$(CONFIG_OPROFILE)	+= arch/mips/oprofile/

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# suspend and hibernation support
drivers-$(CONFIG_PM)	+= arch/mips/power/

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ifdef CONFIG_LASAT
rom.bin rom.sw: vmlinux
	$(Q)$(MAKE) $(build)=arch/mips/lasat/image $@
endif

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#
# Some machines like the Indy need 32-bit ELF binaries for booting purposes.
# Other need ECOFF, so we build a 32-bit ELF binary for them which we then
# convert to ECOFF using elf2ecoff.
#
vmlinux.32: vmlinux
	$(OBJCOPY) -O $(32bit-bfd) $(OBJCOPYFLAGS) $< $@

#
# The 64-bit ELF tools are pretty broken so at this time we generate 64-bit
# ELF files from 32-bit files by conversion.
#
vmlinux.64: vmlinux
	$(OBJCOPY) -O $(64bit-bfd) $(OBJCOPYFLAGS) $< $@

makeboot =$(Q)$(MAKE) $(build)=arch/mips/boot VMLINUX=$(vmlinux-32) $(1)
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makezboot =$(Q)$(MAKE) $(build)=arch/mips/boot/compressed \
	   VMLINUX_LOAD_ADDRESS=$(load-y) 32bit-bfd=$(32bit-bfd) $(1)
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all:	$(all-y)
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vmlinuz: vmlinux FORCE
	+@$(call makezboot,$@)

vmlinuz.bin: vmlinux
	+@$(call makezboot,$@)

vmlinuz.ecoff: vmlinux
	+@$(call makezboot,$@)

vmlinuz.srec: vmlinux
	+@$(call makezboot,$@)

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vmlinux.bin: $(vmlinux-32)
	+@$(call makeboot,$@)

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vmlinux.ecoff: $(vmlinux-32)
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	+@$(call makeboot,$@)

vmlinux.srec: $(vmlinux-32)
	+@$(call makeboot,$@)

CLEAN_FILES += vmlinux.ecoff \
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	       vmlinux.srec
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archprepare:
ifdef CONFIG_MIPS32_N32
	@echo '  Checking missing-syscalls for N32'
	$(Q)$(MAKE) $(build)=. missing-syscalls EXTRA_CFLAGS="-mabi=n32"
endif
ifdef CONFIG_MIPS32_O32
	@echo '  Checking missing-syscalls for O32'
	$(Q)$(MAKE) $(build)=. missing-syscalls EXTRA_CFLAGS="-mabi=32"
endif

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install:
	$(Q)install -D -m 755 vmlinux $(INSTALL_PATH)/vmlinux-$(KERNELRELEASE)
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	$(Q)install -D -m 755 vmlinuz $(INSTALL_PATH)/vmlinuz-$(KERNELRELEASE)
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	$(Q)install -D -m 644 .config $(INSTALL_PATH)/config-$(KERNELRELEASE)
	$(Q)install -D -m 644 System.map $(INSTALL_PATH)/System.map-$(KERNELRELEASE)

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archclean:
	@$(MAKE) $(clean)=arch/mips/boot
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	@$(MAKE) $(clean)=arch/mips/boot/compressed
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	@$(MAKE) $(clean)=arch/mips/lasat
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define archhelp
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	echo '  install              - install kernel into $(INSTALL_PATH)'
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	echo '  vmlinux.ecoff        - ECOFF boot image'
	echo '  vmlinux.bin          - Raw binary boot image'
	echo '  vmlinux.srec         - SREC boot image'
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	echo '  vmlinuz              - Compressed boot(zboot) image'
	echo '  vmlinuz.ecoff        - ECOFF zboot image'
	echo '  vmlinuz.bin          - Raw binary zboot image'
	echo '  vmlinuz.srec         - SREC zboot image'
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	echo
	echo '  These will be default as apropriate for a configured platform.'
endef

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CLEAN_FILES += vmlinux.32 \
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	       vmlinux.64 \
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	       vmlinux.ecoff \
	       vmlinuz \
	       vmlinuz.ecoff \
	       vmlinuz.bin \
	       vmlinuz.srec