Merge remote-tracking branches 'spi/fix/img-spfi' and 'spi/fix/msiof' into spi-linus

[mirror_ubuntu-zesty-kernel.git] / arch / mips / Makefile

#
# 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.
#

KBUILD_DEFCONFIG := ip22_defconfig

#
# 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_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
cflags-y += $(call cc-option, -mno-check-zero-division)

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)        := $(vmlinux-64)
all-$(CONFIG_SYS_SUPPORTS_ZBOOT)+= vmlinuz

#
# 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
KBUILD_AFLAGS_MODULE            += -mlong-calls
KBUILD_CFLAGS_MODULE            += -mlong-calls

#
# pass -msoft-float to GAS if it supports it.  However on newer binutils
# (specifically newer than 2.24.51.20140728) we then also need to explicitly
# set ".set hardfloat" in all files which manipulate floating point registers.
#
ifneq ($(call as-option,-Wa$(comma)-msoft-float,),)
        cflags-y                += -DGAS_HAS_SET_HARDFLOAT -Wa,-msoft-float
endif

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 up to 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))

# For smartmips configurations, there are hundreds of warnings due to ISA overrides
# in assembly and header files. smartmips is only supported for MIPS32r1 onwards
# and there is no support for 64-bit. Various '.set mips2' or '.set mips3' or
# similar directives in the kernel will spam the build logs with the following warnings:
# Warning: the `smartmips' extension requires MIPS32 revision 1 or greater
# or
# Warning: the 64-bit MIPS architecture does not support the `smartmips' extension
# Pass -Wa,--no-warn to disable all assembler warnings until the kernel code has
# been fixed properly.
cflags-$(CONFIG_CPU_HAS_SMARTMIPS)      += $(call cc-option,-msmartmips) -Wa,--no-warn
cflags-$(CONFIG_CPU_MICROMIPS) += $(call cc-option,-mmicromips)

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

ifeq ($(CONFIG_CPU_HAS_MSA),y)
toolchain-msa   := $(call cc-option-yn,-mhard-float -mfp64 -Wa$(comma)-mmsa)
cflags-$(toolchain-msa)         += -DTOOLCHAIN_SUPPORTS_MSA
endif

#
# 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_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_R5500)      += $(call cc-option,-march=r5500,-march=r5000) \
                        -Wa,--trap
cflags-$(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_SB1)        += $(call cc-option,-march=sb1,-march=r5000) \
                        -Wa,--trap
cflags-$(CONFIG_CPU_SB1)        += $(call cc-option,-mno-mdmx)
cflags-$(CONFIG_CPU_SB1)        += $(call cc-option,-mno-mips3d)
cflags-$(CONFIG_CPU_R8000)      += -march=r8000 -Wa,--trap
cflags-$(CONFIG_CPU_R10000)     += $(call cc-option,-march=r10000,-march=r8000) \
                        -Wa,--trap
cflags-$(CONFIG_CPU_CAVIUM_OCTEON) += $(call cc-option,-march=octeon) -Wa,--trap
ifeq (,$(findstring march=octeon, $(cflags-$(CONFIG_CPU_CAVIUM_OCTEON))))
cflags-$(CONFIG_CPU_CAVIUM_OCTEON) += -Wa,-march=octeon
endif
cflags-$(CONFIG_CAVIUM_CN63XXP1) += -Wa,-mfix-cn63xxp1
cflags-$(CONFIG_CPU_BMIPS)      += -march=mips32 -Wa,-mips32 -Wa,--trap

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,)

ifdef CONFIG_CPU_SB1
ifdef CONFIG_SB1_PASS_1_WORKAROUNDS
KBUILD_AFLAGS_MODULE += -msb1-pass1-workarounds
KBUILD_CFLAGS_MODULE += -msb1-pass1-workarounds
endif
endif

#
# Firmware support
#
libs-$(CONFIG_FW_ARC)           += arch/mips/fw/arc/
libs-$(CONFIG_FW_CFE)           += arch/mips/fw/cfe/
libs-$(CONFIG_FW_SNIPROM)       += arch/mips/fw/sni/
libs-y                          += arch/mips/fw/lib/

#
# Kernel compression
#
ifdef SYS_SUPPORTS_ZBOOT
COMPRESSION_FNAME               = vmlinuz
else
COMPRESSION_FNAME               = vmlinux
endif

#
# Board-dependent options and extra files
#
include $(srctree)/arch/mips/Kbuild.platforms

ifdef CONFIG_PHYSICAL_START
load-y                                  = $(CONFIG_PHYSICAL_START)
endif
entry-y                         = 0x$(shell $(NM) vmlinux 2>/dev/null \
                                        | grep "\bkernel_entry\b" | cut -f1 -d \ )

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

#
# 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
# passing 'KBUILD_SYM32=no' option to the make's command line.
#
ifdef CONFIG_64BIT
  ifndef KBUILD_SYM32
    ifeq ($(shell expr $(load-y) \< 0xffffffff80000000), 0)
      KBUILD_SYM32 = y
    endif
  endif

  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)
    endif
  endif
endif

KBUILD_AFLAGS   += $(cflags-y)
KBUILD_CFLAGS   += $(cflags-y)
KBUILD_CPPFLAGS += -DVMLINUX_LOAD_ADDRESS=$(load-y)
KBUILD_CPPFLAGS += -DDATAOFFSET=$(if $(dataoffset-y),$(dataoffset-y),0)

bootvars-y      = VMLINUX_LOAD_ADDRESS=$(load-y) \
                  VMLINUX_ENTRY_ADDRESS=$(entry-y)

LDFLAGS                 += -m $(ld-emul)

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

OBJCOPYFLAGS            += --remove-section=.reginfo

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

libs-y                  += arch/mips/lib/
libs-y                  += arch/mips/math-emu/

# See arch/mips/Kbuild for content of core part of the kernel
core-y += arch/mips/

drivers-$(CONFIG_OPROFILE)      += arch/mips/oprofile/

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

# boot image targets (arch/mips/boot/)
boot-y                  := vmlinux.bin
boot-y                  += vmlinux.ecoff
boot-y                  += vmlinux.srec
ifeq ($(shell expr $(load-y) \< 0xffffffff80000000 2> /dev/null), 0)
boot-y                  += uImage
boot-y                  += uImage.gz
endif

# compressed boot image targets (arch/mips/boot/compressed/)
bootz-y                 := vmlinuz
bootz-y                 += vmlinuz.bin
bootz-y                 += vmlinuz.ecoff
bootz-y                 += vmlinuz.srec

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

#
# 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.
#
quiet_cmd_32 = OBJCOPY $@
        cmd_32 = $(OBJCOPY) -O $(32bit-bfd) $(OBJCOPYFLAGS) $< $@
vmlinux.32: vmlinux
        $(call cmd,32)

#
# The 64-bit ELF tools are pretty broken so at this time we generate 64-bit
# ELF files from 32-bit files by conversion.
#
quiet_cmd_64 = OBJCOPY $@
        cmd_64 = $(OBJCOPY) -O $(64bit-bfd) $(OBJCOPYFLAGS) $< $@
vmlinux.64: vmlinux
        $(call cmd,64)

all:    $(all-y)

# boot
$(boot-y): $(vmlinux-32) FORCE
        $(Q)$(MAKE) $(build)=arch/mips/boot VMLINUX=$(vmlinux-32) \
                $(bootvars-y) arch/mips/boot/$@

ifdef CONFIG_SYS_SUPPORTS_ZBOOT
# boot/compressed
$(bootz-y): $(vmlinux-32) FORCE
        $(Q)$(MAKE) $(build)=arch/mips/boot/compressed \
                $(bootvars-y) 32bit-bfd=$(32bit-bfd) $@
else
vmlinuz: FORCE
        @echo '   CONFIG_SYS_SUPPORTS_ZBOOT is not enabled'
        /bin/false
endif


CLEAN_FILES += vmlinux.32 vmlinux.64

# device-trees
core-$(CONFIG_BUILTIN_DTB) += arch/mips/boot/dts/

%.dtb %.dtb.S %.dtb.o: | scripts
        $(Q)$(MAKE) $(build)=arch/mips/boot/dts arch/mips/boot/dts/$@

PHONY += dtbs
dtbs: scripts
        $(Q)$(MAKE) $(build)=arch/mips/boot/dts dtbs

archprepare:
ifdef CONFIG_MIPS32_N32
        @echo '  Checking missing-syscalls for N32'
        $(Q)$(MAKE) $(build)=. missing-syscalls missing_syscalls_flags="-mabi=n32"
endif
ifdef CONFIG_MIPS32_O32
        @echo '  Checking missing-syscalls for O32'
        $(Q)$(MAKE) $(build)=. missing-syscalls missing_syscalls_flags="-mabi=32"
endif

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

archclean:
        $(Q)$(MAKE) $(clean)=arch/mips/boot
        $(Q)$(MAKE) $(clean)=arch/mips/boot/compressed
        $(Q)$(MAKE) $(clean)=arch/mips/lasat

define archhelp
        echo '  install              - install kernel into $(INSTALL_PATH)'
        echo '  vmlinux.ecoff        - ECOFF boot image'
        echo '  vmlinux.bin          - Raw binary boot image'
        echo '  vmlinux.srec         - SREC boot image'
        echo '  vmlinux.32           - 64-bit boot image wrapped in 32bits (IP22/IP32)'
        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'
        echo '  uImage               - U-Boot image'
        echo '  uImage.gz            - U-Boot image (gzip)'
        echo '  dtbs                 - Device-tree blobs for enabled boards'
        echo
        echo '  These will be default as appropriate for a configured platform.'
endef