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- $(tool-archpref)-unknown-linux-gnu-) 48 endif 49endif 50 51ifdef CONFIG_FUNCTION_GRAPH_TRACER 52 ifndef KBUILD_MCOUNT_RA_ADDRESS 53 ifeq ($(call cc-option-yn,-mmcount-ra-address), y) 54 cflags-y += -mmcount-ra-address -DKBUILD_MCOUNT_RA_ADDRESS 55 endif 56 endif 57endif 58cflags-y += $(call cc-option, -mno-check-zero-division) 59 60ifdef CONFIG_32BIT 61ld-emul = $(32bit-emul) 62vmlinux-32 = vmlinux 63vmlinux-64 = vmlinux.64 64 65cflags-y += -mabi=32 66endif 67 68ifdef CONFIG_64BIT 69ld-emul = $(64bit-emul) 70vmlinux-32 = vmlinux.32 71vmlinux-64 = vmlinux 72 73cflags-y += -mabi=64 74endif 75 76all-$(CONFIG_BOOT_ELF32) := $(vmlinux-32) 77all-$(CONFIG_BOOT_ELF64) := $(vmlinux-64) 78all-$(CONFIG_SYS_SUPPORTS_ZBOOT)+= vmlinuz 79 80# 81# GCC uses -G 0 -mabicalls -fpic as default. We don't want PIC in the kernel 82# code since it only slows down the whole thing. At some point we might make 83# use of global pointer optimizations but their use of $28 conflicts with 84# the current pointer optimization. 85# 86# The DECStation requires an ECOFF kernel for remote booting, other MIPS 87# machines may also. Since BFD is incredibly buggy with respect to 88# crossformat linking we rely on the elf2ecoff tool for format conversion. 89# 90cflags-y += -G 0 -mno-abicalls -fno-pic -pipe 91cflags-y += -msoft-float 92LDFLAGS_vmlinux += -G 0 -static -n -nostdlib 93KBUILD_AFLAGS_MODULE += -mlong-calls 94KBUILD_CFLAGS_MODULE += -mlong-calls 95 96cflags-y += -ffreestanding 97 98# 99# We explicitly add the endianness specifier if needed, this allows 100# to compile kernels with a toolchain for the other endianness. We 101# carefully avoid to add it redundantly because gcc 3.3/3.4 complains 102# when fed the toolchain default! 103# 104# Certain gcc versions upto gcc 4.1.1 (probably 4.2-subversion as of 105# 2006-10-10 don't properly change the predefined symbols if -EB / -EL 106# are used, so we kludge that here. A bug has been filed at 107# http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29413. 108# 109undef-all += -UMIPSEB -U_MIPSEB -U__MIPSEB -U__MIPSEB__ 110undef-all += -UMIPSEL -U_MIPSEL -U__MIPSEL -U__MIPSEL__ 111predef-be += -DMIPSEB -D_MIPSEB -D__MIPSEB -D__MIPSEB__ 112predef-le += -DMIPSEL -D_MIPSEL -D__MIPSEL -D__MIPSEL__ 113cflags-$(CONFIG_CPU_BIG_ENDIAN) += $(shell $(CC) -dumpmachine |grep -q 'mips.*el-.*' && echo -EB $(undef-all) $(predef-be)) 114cflags-$(CONFIG_CPU_LITTLE_ENDIAN) += $(shell $(CC) -dumpmachine |grep -q 'mips.*el-.*' || echo -EL $(undef-all) $(predef-le)) 115 116cflags-$(CONFIG_CPU_HAS_SMARTMIPS) += $(call cc-option,-msmartmips) 117 118cflags-$(CONFIG_SB1XXX_CORELIS) += $(call cc-option,-mno-sched-prolog) \ 119 -fno-omit-frame-pointer 120 121# 122# CPU-dependent compiler/assembler options for optimization. 123# 124cflags-$(CONFIG_CPU_R3000) += -march=r3000 125cflags-$(CONFIG_CPU_TX39XX) += -march=r3900 126cflags-$(CONFIG_CPU_R6000) += -march=r6000 -Wa,--trap 127cflags-$(CONFIG_CPU_R4300) += -march=r4300 -Wa,--trap 128cflags-$(CONFIG_CPU_VR41XX) += -march=r4100 -Wa,--trap 129cflags-$(CONFIG_CPU_R4X00) += -march=r4600 -Wa,--trap 130cflags-$(CONFIG_CPU_TX49XX) += -march=r4600 -Wa,--trap 131cflags-$(CONFIG_CPU_MIPS32_R1) += $(call cc-option,-march=mips32,-mips32 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS32) \ 132 -Wa,-mips32 -Wa,--trap 133cflags-$(CONFIG_CPU_MIPS32_R2) += $(call cc-option,-march=mips32r2,-mips32r2 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS32) \ 134 -Wa,-mips32r2 -Wa,--trap 135cflags-$(CONFIG_CPU_MIPS64_R1) += $(call cc-option,-march=mips64,-mips64 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS64) \ 136 -Wa,-mips64 -Wa,--trap 137cflags-$(CONFIG_CPU_MIPS64_R2) += $(call cc-option,-march=mips64r2,-mips64r2 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS64) \ 138 -Wa,-mips64r2 -Wa,--trap 139cflags-$(CONFIG_CPU_R5000) += -march=r5000 -Wa,--trap 140cflags-$(CONFIG_CPU_R5432) += $(call cc-option,-march=r5400,-march=r5000) \ 141 -Wa,--trap 142cflags-$(CONFIG_CPU_R5500) += $(call cc-option,-march=r5500,-march=r5000) \ 143 -Wa,--trap 144cflags-$(CONFIG_CPU_NEVADA) += $(call cc-option,-march=rm5200,-march=r5000) \ 145 -Wa,--trap 146cflags-$(CONFIG_CPU_RM7000) += $(call cc-option,-march=rm7000,-march=r5000) \ 147 -Wa,--trap 148cflags-$(CONFIG_CPU_RM9000) += $(call cc-option,-march=rm9000,-march=r5000) \ 149 -Wa,--trap 150cflags-$(CONFIG_CPU_SB1) += $(call cc-option,-march=sb1,-march=r5000) \ 151 -Wa,--trap 152cflags-$(CONFIG_CPU_R8000) += -march=r8000 -Wa,--trap 153cflags-$(CONFIG_CPU_R10000) += $(call cc-option,-march=r10000,-march=r8000) \ 154 -Wa,--trap 155cflags-$(CONFIG_CPU_CAVIUM_OCTEON) += $(call cc-option,-march=octeon) -Wa,--trap 156ifeq (,$(findstring march=octeon, $(cflags-$(CONFIG_CPU_CAVIUM_OCTEON)))) 157cflags-$(CONFIG_CPU_CAVIUM_OCTEON) += -Wa,-march=octeon 158endif 159cflags-$(CONFIG_CAVIUM_CN63XXP1) += -Wa,-mfix-cn63xxp1 160 161cflags-$(CONFIG_CPU_R4000_WORKAROUNDS) += $(call cc-option,-mfix-r4000,) 162cflags-$(CONFIG_CPU_R4400_WORKAROUNDS) += $(call cc-option,-mfix-r4400,) 163cflags-$(CONFIG_CPU_DADDI_WORKAROUNDS) += $(call cc-option,-mno-daddi,) 164 165ifdef CONFIG_CPU_SB1 166ifdef CONFIG_SB1_PASS_1_WORKAROUNDS 167KBUILD_AFLAGS_MODULE += -msb1-pass1-workarounds 168KBUILD_CFLAGS_MODULE += -msb1-pass1-workarounds 169endif 170endif 171 172# 173# Firmware support 174# 175libs-$(CONFIG_ARC) += arch/mips/fw/arc/ 176libs-$(CONFIG_CFE) += arch/mips/fw/cfe/ 177libs-$(CONFIG_SNIPROM) += arch/mips/fw/sni/ 178libs-y += arch/mips/fw/lib/ 179 180# 181# Kernel compression 182# 183ifdef SYS_SUPPORTS_ZBOOT 184COMPRESSION_FNAME = vmlinuz 185else 186COMPRESSION_FNAME = vmlinux 187endif 188 189# 190# Board-dependent options and extra files 191# 192include $(srctree)/arch/mips/Kbuild.platforms 193 194cflags-y += -I$(srctree)/arch/mips/include/asm/mach-generic 195drivers-$(CONFIG_PCI) += arch/mips/pci/ 196 197# 198# Automatically detect the build format. By default we choose 199# the elf format according to the load address. 200# We can always force a build with a 64-bits symbol format by 201# passing 'KBUILD_SYM32=no' option to the make's command line. 202# 203ifdef CONFIG_64BIT 204 ifndef KBUILD_SYM32 205 ifeq ($(shell expr $(load-y) \< 0xffffffff80000000), 0) 206 KBUILD_SYM32 = y 207 endif 208 endif 209 210 ifeq ($(KBUILD_SYM32)$(call cc-option-yn,-msym32), yy) 211 cflags-y += -msym32 -DKBUILD_64BIT_SYM32 212 else 213 ifeq ($(CONFIG_CPU_DADDI_WORKAROUNDS), y) 214 $(error CONFIG_CPU_DADDI_WORKAROUNDS unsupported without -msym32) 215 endif 216 endif 217endif 218 219KBUILD_AFLAGS += $(cflags-y) 220KBUILD_CFLAGS += $(cflags-y) 221KBUILD_CPPFLAGS += -D"VMLINUX_LOAD_ADDRESS=$(load-y)" 222KBUILD_CPPFLAGS += -D"DATAOFFSET=$(if $(dataoffset-y),$(dataoffset-y),0)" 223 224LDFLAGS += -m $(ld-emul) 225 226ifdef CONFIG_MIPS 227CHECKFLAGS += $(shell $(CC) $(KBUILD_CFLAGS) -dM -E -xc /dev/null | \ 228 egrep -vw '__GNUC_(|MINOR_|PATCHLEVEL_)_' | \ 229 sed -e 's/^\#define /-D/' -e "s/ /='/" -e "s/$$/'/") 230ifdef CONFIG_64BIT 231CHECKFLAGS += -m64 232endif 233endif 234 235OBJCOPYFLAGS += --remove-section=.reginfo 236 237head-y := arch/mips/kernel/head.o arch/mips/kernel/init_task.o 238 239libs-y += arch/mips/lib/ 240 241# See arch/mips/Kbuild for content of core part of the kernel 242core-y += arch/mips/ 243 244drivers-$(CONFIG_OPROFILE) += arch/mips/oprofile/ 245 246# suspend and hibernation support 247drivers-$(CONFIG_PM) += arch/mips/power/ 248 249ifdef CONFIG_LASAT 250rom.bin rom.sw: vmlinux 251 $(Q)$(MAKE) $(build)=arch/mips/lasat/image $@ 252endif 253 254# 255# Some machines like the Indy need 32-bit ELF binaries for booting purposes. 256# Other need ECOFF, so we build a 32-bit ELF binary for them which we then 257# convert to ECOFF using elf2ecoff. 258# 259vmlinux.32: vmlinux 260 $(OBJCOPY) -O $(32bit-bfd) $(OBJCOPYFLAGS) $< $@ 261 262 263#obj-$(CONFIG_KPROBES) += kprobes.o 264 265# 266# The 64-bit ELF tools are pretty broken so at this time we generate 64-bit 267# ELF files from 32-bit files by conversion. 268# 269vmlinux.64: vmlinux 270 $(OBJCOPY) -O $(64bit-bfd) $(OBJCOPYFLAGS) $< $@ 271 272all: $(all-y) 273 274# boot 275vmlinux.bin vmlinux.ecoff vmlinux.srec: $(vmlinux-32) FORCE 276 $(Q)$(MAKE) $(build)=arch/mips/boot VMLINUX=$(vmlinux-32) arch/mips/boot/$@ 277 278# boot/compressed 279vmlinuz vmlinuz.bin vmlinuz.ecoff vmlinuz.srec: $(vmlinux-32) FORCE 280 $(Q)$(MAKE) $(build)=arch/mips/boot/compressed \ 281 VMLINUX_LOAD_ADDRESS=$(load-y) 32bit-bfd=$(32bit-bfd) $@ 282 283 284CLEAN_FILES += vmlinux.32 vmlinux.64 285 286archprepare: 287ifdef CONFIG_MIPS32_N32 288 @echo ' Checking missing-syscalls for N32' 289 $(Q)$(MAKE) $(build)=. missing-syscalls EXTRA_CFLAGS="-mabi=n32" 290endif 291ifdef CONFIG_MIPS32_O32 292 @echo ' Checking missing-syscalls for O32' 293 $(Q)$(MAKE) $(build)=. missing-syscalls EXTRA_CFLAGS="-mabi=32" 294endif 295 296install: 297 $(Q)install -D -m 755 vmlinux $(INSTALL_PATH)/vmlinux-$(KERNELRELEASE) 298 $(Q)install -D -m 755 vmlinuz $(INSTALL_PATH)/vmlinuz-$(KERNELRELEASE) 299 $(Q)install -D -m 644 .config $(INSTALL_PATH)/config-$(KERNELRELEASE) 300 $(Q)install -D -m 644 System.map $(INSTALL_PATH)/System.map-$(KERNELRELEASE) 301 302archclean: 303 $(Q)$(MAKE) $(clean)=arch/mips/boot 304 $(Q)$(MAKE) $(clean)=arch/mips/boot/compressed 305 $(Q)$(MAKE) $(clean)=arch/mips/lasat 306 307define archhelp 308 echo ' install - install kernel into $(INSTALL_PATH)' 309 echo ' vmlinux.ecoff - ECOFF boot image' 310 echo ' vmlinux.bin - Raw binary boot image' 311 echo ' vmlinux.srec - SREC boot image' 312 echo ' vmlinuz - Compressed boot(zboot) image' 313 echo ' vmlinuz.ecoff - ECOFF zboot image' 314 echo ' vmlinuz.bin - Raw binary zboot image' 315 echo ' vmlinuz.srec - SREC zboot image' 316 echo 317 echo ' These will be default as apropriate for a configured platform.' 318endef 319