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