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 15archscripts: scripts_basic 16 $(Q)$(MAKE) $(build)=arch/mips/boot/tools relocs 17 18KBUILD_DEFCONFIG := ip22_defconfig 19 20# 21# Select the object file format to substitute into the linker script. 22# 23ifdef CONFIG_CPU_LITTLE_ENDIAN 2432bit-tool-archpref = mipsel 2564bit-tool-archpref = mips64el 2632bit-bfd = elf32-tradlittlemips 2764bit-bfd = elf64-tradlittlemips 2832bit-emul = elf32ltsmip 2964bit-emul = elf64ltsmip 30else 3132bit-tool-archpref = mips 3264bit-tool-archpref = mips64 3332bit-bfd = elf32-tradbigmips 3464bit-bfd = elf64-tradbigmips 3532bit-emul = elf32btsmip 3664bit-emul = elf64btsmip 37endif 38 39ifdef CONFIG_32BIT 40tool-archpref = $(32bit-tool-archpref) 41UTS_MACHINE := mips 42endif 43ifdef CONFIG_64BIT 44tool-archpref = $(64bit-tool-archpref) 45UTS_MACHINE := mips64 46endif 47 48ifneq ($(SUBARCH),$(ARCH)) 49 ifeq ($(CROSS_COMPILE),) 50 CROSS_COMPILE := $(call cc-cross-prefix, $(tool-archpref)-linux- $(tool-archpref)-linux-gnu- $(tool-archpref)-unknown-linux-gnu-) 51 endif 52endif 53 54ifdef CONFIG_FUNCTION_GRAPH_TRACER 55 ifndef KBUILD_MCOUNT_RA_ADDRESS 56 ifeq ($(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 $28 conflicts with 87# the current pointer optimization. 88# 89# The DECStation requires an ECOFF kernel for remote booting, other MIPS 90# machines may also. Since BFD is incredibly buggy with respect to 91# crossformat linking we rely on the elf2ecoff tool for format conversion. 92# 93cflags-y += -G 0 -mno-abicalls -fno-pic -pipe 94cflags-y += -msoft-float 95LDFLAGS_vmlinux += -G 0 -static -n -nostdlib 96KBUILD_AFLAGS_MODULE += -mlong-calls 97KBUILD_CFLAGS_MODULE += -mlong-calls 98 99ifeq ($(CONFIG_RELOCATABLE),y) 100LDFLAGS_vmlinux += --emit-relocs 101endif 102 103# 104# pass -msoft-float to GAS if it supports it. However on newer binutils 105# (specifically newer than 2.24.51.20140728) we then also need to explicitly 106# set ".set hardfloat" in all files which manipulate floating point registers. 107# 108ifneq ($(call as-option,-Wa$(comma)-msoft-float,),) 109 cflags-y += -DGAS_HAS_SET_HARDFLOAT -Wa,-msoft-float 110endif 111 112cflags-y += -ffreestanding 113 114# 115# We explicitly add the endianness specifier if needed, this allows 116# to compile kernels with a toolchain for the other endianness. We 117# carefully avoid to add it redundantly because gcc 3.3/3.4 complains 118# when fed the toolchain default! 119# 120# Certain gcc versions up to gcc 4.1.1 (probably 4.2-subversion as of 121# 2006-10-10 don't properly change the predefined symbols if -EB / -EL 122# are used, so we kludge that here. A bug has been filed at 123# http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29413. 124# 125undef-all += -UMIPSEB -U_MIPSEB -U__MIPSEB -U__MIPSEB__ 126undef-all += -UMIPSEL -U_MIPSEL -U__MIPSEL -U__MIPSEL__ 127predef-be += -DMIPSEB -D_MIPSEB -D__MIPSEB -D__MIPSEB__ 128predef-le += -DMIPSEL -D_MIPSEL -D__MIPSEL -D__MIPSEL__ 129cflags-$(CONFIG_CPU_BIG_ENDIAN) += $(shell $(CC) -dumpmachine |grep -q 'mips.*el-.*' && echo -EB $(undef-all) $(predef-be)) 130cflags-$(CONFIG_CPU_LITTLE_ENDIAN) += $(shell $(CC) -dumpmachine |grep -q 'mips.*el-.*' || echo -EL $(undef-all) $(predef-le)) 131 132cflags-$(CONFIG_SB1XXX_CORELIS) += $(call cc-option,-mno-sched-prolog) \ 133 -fno-omit-frame-pointer 134# 135# CPU-dependent compiler/assembler options for optimization. 136# 137cflags-$(CONFIG_CPU_R3000) += -march=r3000 138cflags-$(CONFIG_CPU_TX39XX) += -march=r3900 139cflags-$(CONFIG_CPU_R6000) += -march=r6000 -Wa,--trap 140cflags-$(CONFIG_CPU_R4300) += -march=r4300 -Wa,--trap 141cflags-$(CONFIG_CPU_VR41XX) += -march=r4100 -Wa,--trap 142cflags-$(CONFIG_CPU_R4X00) += -march=r4600 -Wa,--trap 143cflags-$(CONFIG_CPU_TX49XX) += -march=r4600 -Wa,--trap 144cflags-$(CONFIG_CPU_MIPS32_R1) += $(call cc-option,-march=mips32,-mips32 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS32) \ 145 -Wa,-mips32 -Wa,--trap 146cflags-$(CONFIG_CPU_MIPS32_R2) += $(call cc-option,-march=mips32r2,-mips32r2 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS32) \ 147 -Wa,-mips32r2 -Wa,--trap 148cflags-$(CONFIG_CPU_MIPS32_R6) += -march=mips32r6 -Wa,--trap 149cflags-$(CONFIG_CPU_MIPS64_R1) += $(call cc-option,-march=mips64,-mips64 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS64) \ 150 -Wa,-mips64 -Wa,--trap 151cflags-$(CONFIG_CPU_MIPS64_R2) += $(call cc-option,-march=mips64r2,-mips64r2 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS64) \ 152 -Wa,-mips64r2 -Wa,--trap 153cflags-$(CONFIG_CPU_MIPS64_R6) += -march=mips64r6 -Wa,--trap 154cflags-$(CONFIG_CPU_R5000) += -march=r5000 -Wa,--trap 155cflags-$(CONFIG_CPU_R5432) += $(call cc-option,-march=r5400,-march=r5000) \ 156 -Wa,--trap 157cflags-$(CONFIG_CPU_R5500) += $(call cc-option,-march=r5500,-march=r5000) \ 158 -Wa,--trap 159cflags-$(CONFIG_CPU_NEVADA) += $(call cc-option,-march=rm5200,-march=r5000) \ 160 -Wa,--trap 161cflags-$(CONFIG_CPU_RM7000) += $(call cc-option,-march=rm7000,-march=r5000) \ 162 -Wa,--trap 163cflags-$(CONFIG_CPU_SB1) += $(call cc-option,-march=sb1,-march=r5000) \ 164 -Wa,--trap 165cflags-$(CONFIG_CPU_SB1) += $(call cc-option,-mno-mdmx) 166cflags-$(CONFIG_CPU_SB1) += $(call cc-option,-mno-mips3d) 167cflags-$(CONFIG_CPU_R8000) += -march=r8000 -Wa,--trap 168cflags-$(CONFIG_CPU_R10000) += $(call cc-option,-march=r10000,-march=r8000) \ 169 -Wa,--trap 170cflags-$(CONFIG_CPU_CAVIUM_OCTEON) += $(call cc-option,-march=octeon) -Wa,--trap 171ifeq (,$(findstring march=octeon, $(cflags-$(CONFIG_CPU_CAVIUM_OCTEON)))) 172cflags-$(CONFIG_CPU_CAVIUM_OCTEON) += -Wa,-march=octeon 173endif 174cflags-$(CONFIG_CAVIUM_CN63XXP1) += -Wa,-mfix-cn63xxp1 175cflags-$(CONFIG_CPU_BMIPS) += -march=mips32 -Wa,-mips32 -Wa,--trap 176 177cflags-$(CONFIG_CPU_R4000_WORKAROUNDS) += $(call cc-option,-mfix-r4000,) 178cflags-$(CONFIG_CPU_R4400_WORKAROUNDS) += $(call cc-option,-mfix-r4400,) 179cflags-$(CONFIG_CPU_DADDI_WORKAROUNDS) += $(call cc-option,-mno-daddi,) 180 181# For smartmips configurations, there are hundreds of warnings due to ISA overrides 182# in assembly and header files. smartmips is only supported for MIPS32r1 onwards 183# and there is no support for 64-bit. Various '.set mips2' or '.set mips3' or 184# similar directives in the kernel will spam the build logs with the following warnings: 185# Warning: the `smartmips' extension requires MIPS32 revision 1 or greater 186# or 187# Warning: the 64-bit MIPS architecture does not support the `smartmips' extension 188# Pass -Wa,--no-warn to disable all assembler warnings until the kernel code has 189# been fixed properly. 190mips-cflags := $(cflags-y) 191ifeq ($(CONFIG_CPU_HAS_SMARTMIPS),y) 192smartmips-ase := $(call cc-option-yn,$(mips-cflags) -msmartmips) 193cflags-$(smartmips-ase) += -msmartmips -Wa,--no-warn 194endif 195ifeq ($(CONFIG_CPU_MICROMIPS),y) 196micromips-ase := $(call cc-option-yn,$(mips-cflags) -mmicromips) 197cflags-$(micromips-ase) += -mmicromips 198endif 199ifeq ($(CONFIG_CPU_HAS_MSA),y) 200toolchain-msa := $(call cc-option-yn,$(mips-cflags) -mhard-float -mfp64 -Wa$(comma)-mmsa) 201cflags-$(toolchain-msa) += -DTOOLCHAIN_SUPPORTS_MSA 202endif 203toolchain-virt := $(call cc-option-yn,$(mips-cflags) -mvirt) 204cflags-$(toolchain-virt) += -DTOOLCHAIN_SUPPORTS_VIRT 205 206# 207# Firmware support 208# 209libs-$(CONFIG_FW_ARC) += arch/mips/fw/arc/ 210libs-$(CONFIG_FW_CFE) += arch/mips/fw/cfe/ 211libs-$(CONFIG_FW_SNIPROM) += arch/mips/fw/sni/ 212libs-y += arch/mips/fw/lib/ 213 214# 215# Kernel compression 216# 217ifdef SYS_SUPPORTS_ZBOOT 218COMPRESSION_FNAME = vmlinuz 219else 220COMPRESSION_FNAME = vmlinux 221endif 222 223# 224# Board-dependent options and extra files 225# 226include arch/mips/Kbuild.platforms 227 228ifdef CONFIG_PHYSICAL_START 229load-y = $(CONFIG_PHYSICAL_START) 230endif 231entry-y = 0x$(shell $(NM) vmlinux 2>/dev/null \ 232 | grep "\bkernel_entry\b" | cut -f1 -d \ ) 233 234cflags-y += -I$(srctree)/arch/mips/include/asm/mach-generic 235drivers-$(CONFIG_PCI) += arch/mips/pci/ 236 237# 238# Automatically detect the build format. By default we choose 239# the elf format according to the load address. 240# We can always force a build with a 64-bits symbol format by 241# passing 'KBUILD_SYM32=no' option to the make's command line. 242# 243ifdef CONFIG_64BIT 244 ifndef KBUILD_SYM32 245 ifeq ($(shell expr $(load-y) \< 0xffffffff80000000), 0) 246 KBUILD_SYM32 = y 247 endif 248 endif 249 250 ifeq ($(KBUILD_SYM32)$(call cc-option-yn,-msym32), yy) 251 cflags-y += -msym32 -DKBUILD_64BIT_SYM32 252 else 253 ifeq ($(CONFIG_CPU_DADDI_WORKAROUNDS), y) 254 $(error CONFIG_CPU_DADDI_WORKAROUNDS unsupported without -msym32) 255 endif 256 endif 257endif 258 259KBUILD_AFLAGS += $(cflags-y) 260KBUILD_CFLAGS += $(cflags-y) 261KBUILD_CPPFLAGS += -DVMLINUX_LOAD_ADDRESS=$(load-y) 262KBUILD_CPPFLAGS += -DDATAOFFSET=$(if $(dataoffset-y),$(dataoffset-y),0) 263 264bootvars-y = VMLINUX_LOAD_ADDRESS=$(load-y) \ 265 VMLINUX_ENTRY_ADDRESS=$(entry-y) 266 267LDFLAGS += -m $(ld-emul) 268 269ifdef CONFIG_MIPS 270CHECKFLAGS += $(shell $(CC) $(KBUILD_CFLAGS) -dM -E -x c /dev/null | \ 271 egrep -vw '__GNUC_(|MINOR_|PATCHLEVEL_)_' | \ 272 sed -e "s/^\#define /-D'/" -e "s/ /'='/" -e "s/$$/'/" -e 's/\$$/&&/g') 273ifdef CONFIG_64BIT 274CHECKFLAGS += -m64 275endif 276endif 277 278OBJCOPYFLAGS += --remove-section=.reginfo 279 280head-y := arch/mips/kernel/head.o 281 282libs-y += arch/mips/lib/ 283libs-y += arch/mips/math-emu/ 284 285# See arch/mips/Kbuild for content of core part of the kernel 286core-y += arch/mips/ 287 288drivers-$(CONFIG_OPROFILE) += arch/mips/oprofile/ 289 290# suspend and hibernation support 291drivers-$(CONFIG_PM) += arch/mips/power/ 292 293# boot image targets (arch/mips/boot/) 294boot-y := vmlinux.bin 295boot-y += vmlinux.ecoff 296boot-y += vmlinux.srec 297ifeq ($(shell expr $(load-y) \< 0xffffffff80000000 2> /dev/null), 0) 298boot-y += uImage 299boot-y += uImage.bin 300boot-y += uImage.bz2 301boot-y += uImage.gz 302boot-y += uImage.lzma 303boot-y += uImage.lzo 304endif 305 306# compressed boot image targets (arch/mips/boot/compressed/) 307bootz-y := vmlinuz 308bootz-y += vmlinuz.bin 309bootz-y += vmlinuz.ecoff 310bootz-y += vmlinuz.srec 311 312ifdef CONFIG_LASAT 313rom.bin rom.sw: vmlinux 314 $(Q)$(MAKE) $(build)=arch/mips/lasat/image \ 315 $(bootvars-y) $@ 316endif 317 318CMD_RELOCS = arch/mips/boot/tools/relocs 319quiet_cmd_relocs = RELOCS $< 320 cmd_relocs = $(CMD_RELOCS) $< 321 322# 323# Some machines like the Indy need 32-bit ELF binaries for booting purposes. 324# Other need ECOFF, so we build a 32-bit ELF binary for them which we then 325# convert to ECOFF using elf2ecoff. 326# 327quiet_cmd_32 = OBJCOPY $@ 328 cmd_32 = $(OBJCOPY) -O $(32bit-bfd) $(OBJCOPYFLAGS) $< $@ 329vmlinux.32: vmlinux 330ifeq ($(CONFIG_RELOCATABLE)$(CONFIG_64BIT),yy) 331# Currently, objcopy fails to handle the relocations in the elf64 332# So the relocs tool must be run here to remove them first 333 $(call cmd,relocs) 334endif 335 $(call cmd,32) 336 337# 338# The 64-bit ELF tools are pretty broken so at this time we generate 64-bit 339# ELF files from 32-bit files by conversion. 340# 341quiet_cmd_64 = OBJCOPY $@ 342 cmd_64 = $(OBJCOPY) -O $(64bit-bfd) $(OBJCOPYFLAGS) $< $@ 343vmlinux.64: vmlinux 344 $(call cmd,64) 345 346all: $(all-y) 347 348# boot 349$(boot-y): $(vmlinux-32) FORCE 350ifeq ($(CONFIG_RELOCATABLE)$(CONFIG_32BIT),yy) 351 $(call cmd,relocs) 352endif 353 $(Q)$(MAKE) $(build)=arch/mips/boot VMLINUX=$(vmlinux-32) \ 354 $(bootvars-y) arch/mips/boot/$@ 355 356ifdef CONFIG_SYS_SUPPORTS_ZBOOT 357# boot/compressed 358$(bootz-y): $(vmlinux-32) FORCE 359 $(Q)$(MAKE) $(build)=arch/mips/boot/compressed \ 360 $(bootvars-y) 32bit-bfd=$(32bit-bfd) $@ 361else 362vmlinuz: FORCE 363 @echo ' CONFIG_SYS_SUPPORTS_ZBOOT is not enabled' 364 /bin/false 365endif 366 367 368CLEAN_FILES += vmlinux.32 vmlinux.64 369 370# device-trees 371core-$(CONFIG_BUILTIN_DTB) += arch/mips/boot/dts/ 372 373%.dtb %.dtb.S %.dtb.o: | scripts 374 $(Q)$(MAKE) $(build)=arch/mips/boot/dts arch/mips/boot/dts/$@ 375 376PHONY += dtbs 377dtbs: scripts 378 $(Q)$(MAKE) $(build)=arch/mips/boot/dts 379 380PHONY += dtbs_install 381dtbs_install: 382 $(Q)$(MAKE) $(dtbinst)=arch/mips/boot/dts 383 384archprepare: 385ifdef CONFIG_MIPS32_N32 386 @echo ' Checking missing-syscalls for N32' 387 $(Q)$(MAKE) $(build)=. missing-syscalls missing_syscalls_flags="-mabi=n32" 388endif 389ifdef CONFIG_MIPS32_O32 390 @echo ' Checking missing-syscalls for O32' 391 $(Q)$(MAKE) $(build)=. missing-syscalls missing_syscalls_flags="-mabi=32" 392endif 393 394install: 395 $(Q)install -D -m 755 vmlinux $(INSTALL_PATH)/vmlinux-$(KERNELRELEASE) 396ifdef CONFIG_SYS_SUPPORTS_ZBOOT 397 $(Q)install -D -m 755 vmlinuz $(INSTALL_PATH)/vmlinuz-$(KERNELRELEASE) 398endif 399 $(Q)install -D -m 644 .config $(INSTALL_PATH)/config-$(KERNELRELEASE) 400 $(Q)install -D -m 644 System.map $(INSTALL_PATH)/System.map-$(KERNELRELEASE) 401 402archclean: 403 $(Q)$(MAKE) $(clean)=arch/mips/boot 404 $(Q)$(MAKE) $(clean)=arch/mips/boot/compressed 405 $(Q)$(MAKE) $(clean)=arch/mips/boot/tools 406 $(Q)$(MAKE) $(clean)=arch/mips/lasat 407 408define archhelp 409 echo ' install - install kernel into $(INSTALL_PATH)' 410 echo ' vmlinux.ecoff - ECOFF boot image' 411 echo ' vmlinux.bin - Raw binary boot image' 412 echo ' vmlinux.srec - SREC boot image' 413 echo ' vmlinux.32 - 64-bit boot image wrapped in 32bits (IP22/IP32)' 414 echo ' vmlinuz - Compressed boot(zboot) image' 415 echo ' vmlinuz.ecoff - ECOFF zboot image' 416 echo ' vmlinuz.bin - Raw binary zboot image' 417 echo ' vmlinuz.srec - SREC zboot image' 418 echo ' uImage - U-Boot image' 419 echo ' uImage.bin - U-Boot image (uncompressed)' 420 echo ' uImage.bz2 - U-Boot image (bz2)' 421 echo ' uImage.gz - U-Boot image (gzip)' 422 echo ' uImage.lzma - U-Boot image (lzma)' 423 echo ' uImage.lzo - U-Boot image (lzo)' 424 echo ' dtbs - Device-tree blobs for enabled boards' 425 echo ' dtbs_install - Install dtbs to $(INSTALL_DTBS_PATH)' 426 echo 427 echo ' These will be default as appropriate for a configured platform.' 428endef 429