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 $28 conflicts with 84# the current pointer optimization. 85# 86# The DECStation requires an ECOFF kernel for remote booting, other MIPS 87# machines may also. Since BFD is incredibly buggy with respect to 88# crossformat linking we rely on the elf2ecoff tool for format conversion. 89# 90cflags-y += -G 0 -mno-abicalls -fno-pic -pipe 91cflags-y += -msoft-float 92LDFLAGS_vmlinux += -G 0 -static -n -nostdlib 93KBUILD_AFLAGS_MODULE += -mlong-calls 94KBUILD_CFLAGS_MODULE += -mlong-calls 95 96cflags-y += -ffreestanding 97 98# 99# We explicitly add the endianness specifier if needed, this allows 100# to compile kernels with a toolchain for the other endianness. We 101# carefully avoid to add it redundantly because gcc 3.3/3.4 complains 102# when fed the toolchain default! 103# 104# Certain gcc versions up to gcc 4.1.1 (probably 4.2-subversion as of 105# 2006-10-10 don't properly change the predefined symbols if -EB / -EL 106# are used, so we kludge that here. A bug has been filed at 107# http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29413. 108# 109undef-all += -UMIPSEB -U_MIPSEB -U__MIPSEB -U__MIPSEB__ 110undef-all += -UMIPSEL -U_MIPSEL -U__MIPSEL -U__MIPSEL__ 111predef-be += -DMIPSEB -D_MIPSEB -D__MIPSEB -D__MIPSEB__ 112predef-le += -DMIPSEL -D_MIPSEL -D__MIPSEL -D__MIPSEL__ 113cflags-$(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) += $(call cc-option,-msmartmips) 117cflags-$(CONFIG_CPU_MICROMIPS) += $(call cc-option,-mmicromips -mno-jals) 118 119cflags-$(CONFIG_SB1XXX_CORELIS) += $(call cc-option,-mno-sched-prolog) \ 120 -fno-omit-frame-pointer 121 122# 123# CPU-dependent compiler/assembler options for optimization. 124# 125cflags-$(CONFIG_CPU_R3000) += -march=r3000 126cflags-$(CONFIG_CPU_TX39XX) += -march=r3900 127cflags-$(CONFIG_CPU_R6000) += -march=r6000 -Wa,--trap 128cflags-$(CONFIG_CPU_R4300) += -march=r4300 -Wa,--trap 129cflags-$(CONFIG_CPU_VR41XX) += -march=r4100 -Wa,--trap 130cflags-$(CONFIG_CPU_R4X00) += -march=r4600 -Wa,--trap 131cflags-$(CONFIG_CPU_TX49XX) += -march=r4600 -Wa,--trap 132cflags-$(CONFIG_CPU_MIPS32_R1) += $(call cc-option,-march=mips32,-mips32 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS32) \ 133 -Wa,-mips32 -Wa,--trap 134cflags-$(CONFIG_CPU_MIPS32_R2) += $(call cc-option,-march=mips32r2,-mips32r2 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS32) \ 135 -Wa,-mips32r2 -Wa,--trap 136cflags-$(CONFIG_CPU_MIPS64_R1) += $(call cc-option,-march=mips64,-mips64 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS64) \ 137 -Wa,-mips64 -Wa,--trap 138cflags-$(CONFIG_CPU_MIPS64_R2) += $(call cc-option,-march=mips64r2,-mips64r2 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS64) \ 139 -Wa,-mips64r2 -Wa,--trap 140cflags-$(CONFIG_CPU_R5000) += -march=r5000 -Wa,--trap 141cflags-$(CONFIG_CPU_R5432) += $(call cc-option,-march=r5400,-march=r5000) \ 142 -Wa,--trap 143cflags-$(CONFIG_CPU_R5500) += $(call cc-option,-march=r5500,-march=r5000) \ 144 -Wa,--trap 145cflags-$(CONFIG_CPU_NEVADA) += $(call cc-option,-march=rm5200,-march=r5000) \ 146 -Wa,--trap 147cflags-$(CONFIG_CPU_RM7000) += $(call cc-option,-march=rm7000,-march=r5000) \ 148 -Wa,--trap 149cflags-$(CONFIG_CPU_SB1) += $(call cc-option,-march=sb1,-march=r5000) \ 150 -Wa,--trap 151cflags-$(CONFIG_CPU_R8000) += -march=r8000 -Wa,--trap 152cflags-$(CONFIG_CPU_R10000) += $(call cc-option,-march=r10000,-march=r8000) \ 153 -Wa,--trap 154cflags-$(CONFIG_CPU_CAVIUM_OCTEON) += $(call cc-option,-march=octeon) -Wa,--trap 155ifeq (,$(findstring march=octeon, $(cflags-$(CONFIG_CPU_CAVIUM_OCTEON)))) 156cflags-$(CONFIG_CPU_CAVIUM_OCTEON) += -Wa,-march=octeon 157endif 158cflags-$(CONFIG_CAVIUM_CN63XXP1) += -Wa,-mfix-cn63xxp1 159cflags-$(CONFIG_CPU_BMIPS) += -march=mips32 -Wa,-mips32 -Wa,--trap 160 161cflags-$(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_FW_ARC) += arch/mips/fw/arc/ 176libs-$(CONFIG_FW_CFE) += arch/mips/fw/cfe/ 177libs-$(CONFIG_FW_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 194ifdef CONFIG_PHYSICAL_START 195load-y = $(CONFIG_PHYSICAL_START) 196endif 197entry-y = 0x$(shell $(NM) vmlinux 2>/dev/null \ 198 | grep "\bkernel_entry\b" | cut -f1 -d \ ) 199 200cflags-y += -I$(srctree)/arch/mips/include/asm/mach-generic 201drivers-$(CONFIG_PCI) += arch/mips/pci/ 202 203# 204# Automatically detect the build format. By default we choose 205# the elf format according to the load address. 206# We can always force a build with a 64-bits symbol format by 207# passing 'KBUILD_SYM32=no' option to the make's command line. 208# 209ifdef CONFIG_64BIT 210 ifndef KBUILD_SYM32 211 ifeq ($(shell expr $(load-y) \< 0xffffffff80000000), 0) 212 KBUILD_SYM32 = y 213 endif 214 endif 215 216 ifeq ($(KBUILD_SYM32)$(call cc-option-yn,-msym32), yy) 217 cflags-y += -msym32 -DKBUILD_64BIT_SYM32 218 else 219 ifeq ($(CONFIG_CPU_DADDI_WORKAROUNDS), y) 220 $(error CONFIG_CPU_DADDI_WORKAROUNDS unsupported without -msym32) 221 endif 222 endif 223endif 224 225KBUILD_AFLAGS += $(cflags-y) 226KBUILD_CFLAGS += $(cflags-y) 227KBUILD_CPPFLAGS += -DVMLINUX_LOAD_ADDRESS=$(load-y) 228KBUILD_CPPFLAGS += -DDATAOFFSET=$(if $(dataoffset-y),$(dataoffset-y),0) 229 230bootvars-y = VMLINUX_LOAD_ADDRESS=$(load-y) \ 231 VMLINUX_ENTRY_ADDRESS=$(entry-y) 232 233LDFLAGS += -m $(ld-emul) 234 235ifdef CONFIG_CC_STACKPROTECTOR 236 KBUILD_CFLAGS += -fstack-protector 237endif 238 239ifdef CONFIG_MIPS 240CHECKFLAGS += $(shell $(CC) $(KBUILD_CFLAGS) -dM -E -x c /dev/null | \ 241 egrep -vw '__GNUC_(|MINOR_|PATCHLEVEL_)_' | \ 242 sed -e "s/^\#define /-D'/" -e "s/ /'='/" -e "s/$$/'/") 243ifdef CONFIG_64BIT 244CHECKFLAGS += -m64 245endif 246endif 247 248OBJCOPYFLAGS += --remove-section=.reginfo 249 250head-y := arch/mips/kernel/head.o 251 252libs-y += arch/mips/lib/ 253 254# See arch/mips/Kbuild for content of core part of the kernel 255core-y += arch/mips/ 256 257drivers-$(CONFIG_OPROFILE) += arch/mips/oprofile/ 258 259# suspend and hibernation support 260drivers-$(CONFIG_PM) += arch/mips/power/ 261 262# boot image targets (arch/mips/boot/) 263boot-y := vmlinux.bin 264boot-y += vmlinux.ecoff 265boot-y += vmlinux.srec 266ifeq ($(shell expr $(load-y) \< 0xffffffff80000000 2> /dev/null), 0) 267boot-y += uImage 268boot-y += uImage.gz 269endif 270 271# compressed boot image targets (arch/mips/boot/compressed/) 272bootz-y := vmlinuz 273bootz-y += vmlinuz.bin 274bootz-y += vmlinuz.ecoff 275bootz-y += vmlinuz.srec 276 277ifdef CONFIG_LASAT 278rom.bin rom.sw: vmlinux 279 $(Q)$(MAKE) $(build)=arch/mips/lasat/image \ 280 $(bootvars-y) $@ 281endif 282 283# 284# Some machines like the Indy need 32-bit ELF binaries for booting purposes. 285# Other need ECOFF, so we build a 32-bit ELF binary for them which we then 286# convert to ECOFF using elf2ecoff. 287# 288quiet_cmd_32 = OBJCOPY $@ 289 cmd_32 = $(OBJCOPY) -O $(32bit-bfd) $(OBJCOPYFLAGS) $< $@ 290vmlinux.32: vmlinux 291 $(call cmd,32) 292 293# 294# The 64-bit ELF tools are pretty broken so at this time we generate 64-bit 295# ELF files from 32-bit files by conversion. 296# 297quiet_cmd_64 = OBJCOPY $@ 298 cmd_64 = $(OBJCOPY) -O $(64bit-bfd) $(OBJCOPYFLAGS) $< $@ 299vmlinux.64: vmlinux 300 $(call cmd,64) 301 302all: $(all-y) 303 304# boot 305$(boot-y): $(vmlinux-32) FORCE 306 $(Q)$(MAKE) $(build)=arch/mips/boot VMLINUX=$(vmlinux-32) \ 307 $(bootvars-y) arch/mips/boot/$@ 308 309ifdef CONFIG_SYS_SUPPORTS_ZBOOT 310# boot/compressed 311$(bootz-y): $(vmlinux-32) FORCE 312 $(Q)$(MAKE) $(build)=arch/mips/boot/compressed \ 313 $(bootvars-y) 32bit-bfd=$(32bit-bfd) $@ 314else 315vmlinuz: FORCE 316 @echo ' CONFIG_SYS_SUPPORTS_ZBOOT is not enabled' 317 /bin/false 318endif 319 320 321CLEAN_FILES += vmlinux.32 vmlinux.64 322 323archprepare: 324ifdef CONFIG_MIPS32_N32 325 @echo ' Checking missing-syscalls for N32' 326 $(Q)$(MAKE) $(build)=. missing-syscalls missing_syscalls_flags="-mabi=n32" 327endif 328ifdef CONFIG_MIPS32_O32 329 @echo ' Checking missing-syscalls for O32' 330 $(Q)$(MAKE) $(build)=. missing-syscalls missing_syscalls_flags="-mabi=32" 331endif 332 333install: 334 $(Q)install -D -m 755 vmlinux $(INSTALL_PATH)/vmlinux-$(KERNELRELEASE) 335ifdef CONFIG_SYS_SUPPORTS_ZBOOT 336 $(Q)install -D -m 755 vmlinuz $(INSTALL_PATH)/vmlinuz-$(KERNELRELEASE) 337endif 338 $(Q)install -D -m 644 .config $(INSTALL_PATH)/config-$(KERNELRELEASE) 339 $(Q)install -D -m 644 System.map $(INSTALL_PATH)/System.map-$(KERNELRELEASE) 340 341archclean: 342 $(Q)$(MAKE) $(clean)=arch/mips/boot 343 $(Q)$(MAKE) $(clean)=arch/mips/boot/compressed 344 $(Q)$(MAKE) $(clean)=arch/mips/lasat 345 346define archhelp 347 echo ' install - install kernel into $(INSTALL_PATH)' 348 echo ' vmlinux.ecoff - ECOFF boot image' 349 echo ' vmlinux.bin - Raw binary boot image' 350 echo ' vmlinux.srec - SREC boot image' 351 echo ' vmlinuz - Compressed boot(zboot) image' 352 echo ' vmlinuz.ecoff - ECOFF zboot image' 353 echo ' vmlinuz.bin - Raw binary zboot image' 354 echo ' vmlinuz.srec - SREC zboot image' 355 echo ' uImage - U-Boot image' 356 echo ' uImage.gz - U-Boot image (gzip)' 357 echo 358 echo ' These will be default as appropriate for a configured platform.' 359endef 360