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-$(toolchain-virt) += -DTOOLCHAIN_SUPPORTS_VIRT 205 206cflags-$(CONFIG_MIPS_COMPACT_BRANCHES_NEVER) += -mcompact-branches=never 207cflags-$(CONFIG_MIPS_COMPACT_BRANCHES_OPTIMAL) += -mcompact-branches=optimal 208cflags-$(CONFIG_MIPS_COMPACT_BRANCHES_ALWAYS) += -mcompact-branches=always 209 210# 211# Firmware support 212# 213libs-$(CONFIG_FW_ARC) += arch/mips/fw/arc/ 214libs-$(CONFIG_FW_CFE) += arch/mips/fw/cfe/ 215libs-$(CONFIG_FW_SNIPROM) += arch/mips/fw/sni/ 216libs-y += arch/mips/fw/lib/ 217 218# 219# Kernel compression 220# 221ifdef SYS_SUPPORTS_ZBOOT 222COMPRESSION_FNAME = vmlinuz 223else 224COMPRESSION_FNAME = vmlinux 225endif 226 227# 228# Board-dependent options and extra files 229# 230include arch/mips/Kbuild.platforms 231 232ifdef CONFIG_PHYSICAL_START 233load-y = $(CONFIG_PHYSICAL_START) 234endif 235entry-y = 0x$(shell $(NM) vmlinux 2>/dev/null \ 236 | grep "\bkernel_entry\b" | cut -f1 -d \ ) 237 238cflags-y += -I$(srctree)/arch/mips/include/asm/mach-generic 239drivers-$(CONFIG_PCI) += arch/mips/pci/ 240 241# 242# Automatically detect the build format. By default we choose 243# the elf format according to the load address. 244# We can always force a build with a 64-bits symbol format by 245# passing 'KBUILD_SYM32=no' option to the make's command line. 246# 247ifdef CONFIG_64BIT 248 ifndef KBUILD_SYM32 249 ifeq ($(shell expr $(load-y) \< 0xffffffff80000000), 0) 250 KBUILD_SYM32 = y 251 endif 252 endif 253 254 ifeq ($(KBUILD_SYM32)$(call cc-option-yn,-msym32), yy) 255 cflags-y += -msym32 -DKBUILD_64BIT_SYM32 256 else 257 ifeq ($(CONFIG_CPU_DADDI_WORKAROUNDS), y) 258 $(error CONFIG_CPU_DADDI_WORKAROUNDS unsupported without -msym32) 259 endif 260 endif 261endif 262 263KBUILD_AFLAGS += $(cflags-y) 264KBUILD_CFLAGS += $(cflags-y) 265KBUILD_CPPFLAGS += -DVMLINUX_LOAD_ADDRESS=$(load-y) 266KBUILD_CPPFLAGS += -DDATAOFFSET=$(if $(dataoffset-y),$(dataoffset-y),0) 267 268bootvars-y = VMLINUX_LOAD_ADDRESS=$(load-y) \ 269 VMLINUX_ENTRY_ADDRESS=$(entry-y) 270 271LDFLAGS += -m $(ld-emul) 272 273ifdef CONFIG_MIPS 274CHECKFLAGS += $(shell $(CC) $(KBUILD_CFLAGS) -dM -E -x c /dev/null | \ 275 egrep -vw '__GNUC_(|MINOR_|PATCHLEVEL_)_' | \ 276 sed -e "s/^\#define /-D'/" -e "s/ /'='/" -e "s/$$/'/" -e 's/\$$/&&/g') 277ifdef CONFIG_64BIT 278CHECKFLAGS += -m64 279endif 280endif 281 282OBJCOPYFLAGS += --remove-section=.reginfo 283 284head-y := arch/mips/kernel/head.o 285 286libs-y += arch/mips/lib/ 287libs-y += arch/mips/math-emu/ 288 289# See arch/mips/Kbuild for content of core part of the kernel 290core-y += arch/mips/ 291 292drivers-$(CONFIG_OPROFILE) += arch/mips/oprofile/ 293 294# suspend and hibernation support 295drivers-$(CONFIG_PM) += arch/mips/power/ 296 297# boot image targets (arch/mips/boot/) 298boot-y := vmlinux.bin 299boot-y += vmlinux.ecoff 300boot-y += vmlinux.srec 301ifeq ($(shell expr $(load-y) \< 0xffffffff80000000 2> /dev/null), 0) 302boot-y += uImage 303boot-y += uImage.bin 304boot-y += uImage.bz2 305boot-y += uImage.gz 306boot-y += uImage.lzma 307boot-y += uImage.lzo 308endif 309 310# compressed boot image targets (arch/mips/boot/compressed/) 311bootz-y := vmlinuz 312bootz-y += vmlinuz.bin 313bootz-y += vmlinuz.ecoff 314bootz-y += vmlinuz.srec 315 316ifdef CONFIG_LASAT 317rom.bin rom.sw: vmlinux 318 $(Q)$(MAKE) $(build)=arch/mips/lasat/image \ 319 $(bootvars-y) $@ 320endif 321 322CMD_RELOCS = arch/mips/boot/tools/relocs 323quiet_cmd_relocs = RELOCS $< 324 cmd_relocs = $(CMD_RELOCS) $< 325 326# 327# Some machines like the Indy need 32-bit ELF binaries for booting purposes. 328# Other need ECOFF, so we build a 32-bit ELF binary for them which we then 329# convert to ECOFF using elf2ecoff. 330# 331quiet_cmd_32 = OBJCOPY $@ 332 cmd_32 = $(OBJCOPY) -O $(32bit-bfd) $(OBJCOPYFLAGS) $< $@ 333vmlinux.32: vmlinux 334ifeq ($(CONFIG_RELOCATABLE)$(CONFIG_64BIT),yy) 335# Currently, objcopy fails to handle the relocations in the elf64 336# So the relocs tool must be run here to remove them first 337 $(call cmd,relocs) 338endif 339 $(call cmd,32) 340 341# 342# The 64-bit ELF tools are pretty broken so at this time we generate 64-bit 343# ELF files from 32-bit files by conversion. 344# 345quiet_cmd_64 = OBJCOPY $@ 346 cmd_64 = $(OBJCOPY) -O $(64bit-bfd) $(OBJCOPYFLAGS) $< $@ 347vmlinux.64: vmlinux 348 $(call cmd,64) 349 350all: $(all-y) 351 352# boot 353$(boot-y): $(vmlinux-32) FORCE 354ifeq ($(CONFIG_RELOCATABLE)$(CONFIG_32BIT),yy) 355 $(call cmd,relocs) 356endif 357 $(Q)$(MAKE) $(build)=arch/mips/boot VMLINUX=$(vmlinux-32) \ 358 $(bootvars-y) arch/mips/boot/$@ 359 360ifdef CONFIG_SYS_SUPPORTS_ZBOOT 361# boot/compressed 362$(bootz-y): $(vmlinux-32) FORCE 363 $(Q)$(MAKE) $(build)=arch/mips/boot/compressed \ 364 $(bootvars-y) 32bit-bfd=$(32bit-bfd) $@ 365else 366vmlinuz: FORCE 367 @echo ' CONFIG_SYS_SUPPORTS_ZBOOT is not enabled' 368 /bin/false 369endif 370 371 372CLEAN_FILES += vmlinux.32 vmlinux.64 373 374# device-trees 375core-$(CONFIG_BUILTIN_DTB) += arch/mips/boot/dts/ 376 377%.dtb %.dtb.S %.dtb.o: | scripts 378 $(Q)$(MAKE) $(build)=arch/mips/boot/dts arch/mips/boot/dts/$@ 379 380PHONY += dtbs 381dtbs: scripts 382 $(Q)$(MAKE) $(build)=arch/mips/boot/dts 383 384PHONY += dtbs_install 385dtbs_install: 386 $(Q)$(MAKE) $(dtbinst)=arch/mips/boot/dts 387 388archprepare: 389ifdef CONFIG_MIPS32_N32 390 @echo ' Checking missing-syscalls for N32' 391 $(Q)$(MAKE) $(build)=. missing-syscalls missing_syscalls_flags="-mabi=n32" 392endif 393ifdef CONFIG_MIPS32_O32 394 @echo ' Checking missing-syscalls for O32' 395 $(Q)$(MAKE) $(build)=. missing-syscalls missing_syscalls_flags="-mabi=32" 396endif 397 398install: 399 $(Q)install -D -m 755 vmlinux $(INSTALL_PATH)/vmlinux-$(KERNELRELEASE) 400ifdef CONFIG_SYS_SUPPORTS_ZBOOT 401 $(Q)install -D -m 755 vmlinuz $(INSTALL_PATH)/vmlinuz-$(KERNELRELEASE) 402endif 403 $(Q)install -D -m 644 .config $(INSTALL_PATH)/config-$(KERNELRELEASE) 404 $(Q)install -D -m 644 System.map $(INSTALL_PATH)/System.map-$(KERNELRELEASE) 405 406archclean: 407 $(Q)$(MAKE) $(clean)=arch/mips/boot 408 $(Q)$(MAKE) $(clean)=arch/mips/boot/compressed 409 $(Q)$(MAKE) $(clean)=arch/mips/boot/tools 410 $(Q)$(MAKE) $(clean)=arch/mips/lasat 411 412define archhelp 413 echo ' install - install kernel into $(INSTALL_PATH)' 414 echo ' vmlinux.ecoff - ECOFF boot image' 415 echo ' vmlinux.bin - Raw binary boot image' 416 echo ' vmlinux.srec - SREC boot image' 417 echo ' vmlinux.32 - 64-bit boot image wrapped in 32bits (IP22/IP32)' 418 echo ' vmlinuz - Compressed boot(zboot) image' 419 echo ' vmlinuz.ecoff - ECOFF zboot image' 420 echo ' vmlinuz.bin - Raw binary zboot image' 421 echo ' vmlinuz.srec - SREC zboot image' 422 echo ' uImage - U-Boot image' 423 echo ' uImage.bin - U-Boot image (uncompressed)' 424 echo ' uImage.bz2 - U-Boot image (bz2)' 425 echo ' uImage.gz - U-Boot image (gzip)' 426 echo ' uImage.lzma - U-Boot image (lzma)' 427 echo ' uImage.lzo - U-Boot image (lzo)' 428 echo ' dtbs - Device-tree blobs for enabled boards' 429 echo ' dtbs_install - Install dtbs to $(INSTALL_DTBS_PATH)' 430 echo 431 echo ' These will be default as appropriate for a configured platform.' 432endef 433