Initial import

1 files changed, 423 insertions, 0 deletions

diff --git a/arch/mips/Makefile b/arch/mips/Makefile
new file mode 100644
index 000000000..ae2dd5905
--- /dev/null
+++ b/arch/mips/Makefile
@@ -0,0 +1,423 @@
+#
+# 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) $(predef-le))
+
+cflags-$(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_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_MIPS32_R6)	+= -march=mips32r6 -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_MIPS64_R6)	+= -march=mips64r6 -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-$(CONFIG_CPU_BMIPS)	+= -march=mips32 -Wa,-mips32 -Wa,--trap
+#
+# binutils from v2.25 on and gcc starting from v4.9.0 treat -march=loongson3a
+# as MIPS64 R1; older versions as just R1.  This leaves the possibility open
+# that GCC might generate R2 code for -march=loongson3a which then is rejected
+# by GAS.  The cc-option can't probe for this behaviour so -march=loongson3a
+# can't easily be used safely within the kbuild framework.
+#
+cflags-$(CONFIG_CPU_LOONGSON3)  +=					\
+	$(call cc-option,-march=mips64r2,-mips64r2 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS64) \
+	-Wa,-mips64r2 -Wa,--trap
+
+cflags-$(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
+
+# 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.
+mips-cflags				:= $(cflags-y)
+ifeq ($(CONFIG_CPU_HAS_SMARTMIPS),y)
+smartmips-ase				:= $(call cc-option-yn,$(mips-cflags) -msmartmips)
+cflags-$(smartmips-ase)			+= -msmartmips -Wa,--no-warn
+endif
+ifeq ($(CONFIG_CPU_MICROMIPS),y)
+micromips-ase				:= $(call cc-option-yn,$(mips-cflags) -mmicromips)
+cflags-$(micromips-ase)			+= -mmicromips
+endif
+ifeq ($(CONFIG_CPU_HAS_MSA),y)
+toolchain-msa				:= $(call cc-option-yn,$(mips-cflags) -mhard-float -mfp64 -Wa$(comma)-mmsa)
+cflags-$(toolchain-msa)			+= -DTOOLCHAIN_SUPPORTS_MSA
+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 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/$$/'/" -e 's/\$$/&&/g')
+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.bin
+boot-y			+= uImage.bz2
+boot-y			+= uImage.gz
+boot-y			+= uImage.lzma
+boot-y			+= uImage.lzo
+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
+
+PHONY += dtbs_install
+dtbs_install:
+	$(Q)$(MAKE) $(dtbinst)=arch/mips/boot/dts
+
+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.bin           - U-Boot image (uncompressed)'
+	echo '  uImage.bz2           - U-Boot image (bz2)'
+	echo '  uImage.gz            - U-Boot image (gzip)'
+	echo '  uImage.lzma          - U-Boot image (lzma)'
+	echo '  uImage.lzo           - U-Boot image (lzo)'
+	echo '  dtbs                 - Device-tree blobs for enabled boards'
+	echo '  dtbs_install         - Install dtbs to $(INSTALL_DTBS_PATH)'
+	echo
+	echo '  These will be default as appropriate for a configured platform.'
+endef