| 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 | |
| 15 | KBUILD_DEFCONFIG := ip22_defconfig |
| 16 | |
| 17 | # |
| 18 | # Select the object file format to substitute into the linker script. |
| 19 | # |
| 20 | ifdef CONFIG_CPU_LITTLE_ENDIAN |
| 21 | 32bit-tool-archpref = mipsel |
| 22 | 64bit-tool-archpref = mips64el |
| 23 | 32bit-bfd = elf32-tradlittlemips |
| 24 | 64bit-bfd = elf64-tradlittlemips |
| 25 | 32bit-emul = elf32ltsmip |
| 26 | 64bit-emul = elf64ltsmip |
| 27 | else |
| 28 | 32bit-tool-archpref = mips |
| 29 | 64bit-tool-archpref = mips64 |
| 30 | 32bit-bfd = elf32-tradbigmips |
| 31 | 64bit-bfd = elf64-tradbigmips |
| 32 | 32bit-emul = elf32btsmip |
| 33 | 64bit-emul = elf64btsmip |
| 34 | endif |
| 35 | |
| 36 | ifdef CONFIG_32BIT |
| 37 | tool-archpref = $(32bit-tool-archpref) |
| 38 | UTS_MACHINE := mips |
| 39 | endif |
| 40 | ifdef CONFIG_64BIT |
| 41 | tool-archpref = $(64bit-tool-archpref) |
| 42 | UTS_MACHINE := mips64 |
| 43 | endif |
| 44 | |
| 45 | ifneq ($(SUBARCH),$(ARCH)) |
| 46 | ifeq ($(CROSS_COMPILE),) |
| 47 | CROSS_COMPILE := $(call cc-cross-prefix, $(tool-archpref)-linux- $(tool-archpref)-linux-gnu- $(tool-archpref)-unknown-linux-gnu-) |
| 48 | endif |
| 49 | endif |
| 50 | |
| 51 | ifdef CONFIG_FUNCTION_GRAPH_TRACER |
| 52 | ifndef KBUILD_MCOUNT_RA_ADDRESS |
| 53 | ifeq ($(call cc-option-yn,-mmcount-ra-address), y) |
| 54 | cflags-y += -mmcount-ra-address -DKBUILD_MCOUNT_RA_ADDRESS |
| 55 | endif |
| 56 | endif |
| 57 | endif |
| 58 | cflags-y += $(call cc-option, -mno-check-zero-division) |
| 59 | |
| 60 | ifdef CONFIG_32BIT |
| 61 | ld-emul = $(32bit-emul) |
| 62 | vmlinux-32 = vmlinux |
| 63 | vmlinux-64 = vmlinux.64 |
| 64 | |
| 65 | cflags-y += -mabi=32 |
| 66 | endif |
| 67 | |
| 68 | ifdef CONFIG_64BIT |
| 69 | ld-emul = $(64bit-emul) |
| 70 | vmlinux-32 = vmlinux.32 |
| 71 | vmlinux-64 = vmlinux |
| 72 | |
| 73 | cflags-y += -mabi=64 |
| 74 | endif |
| 75 | |
| 76 | all-$(CONFIG_BOOT_ELF32) := $(vmlinux-32) |
| 77 | all-$(CONFIG_BOOT_ELF64) := $(vmlinux-64) |
| 78 | all-$(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 $28 conflicts with |
| 84 | # the current pointer optimization. |
| 85 | # |
| 86 | # The DECStation requires an ECOFF kernel for remote booting, other MIPS |
| 87 | # machines may also. Since BFD is incredibly buggy with respect to |
| 88 | # crossformat linking we rely on the elf2ecoff tool for format conversion. |
| 89 | # |
| 90 | cflags-y += -G 0 -mno-abicalls -fno-pic -pipe |
| 91 | cflags-y += -msoft-float |
| 92 | LDFLAGS_vmlinux += -G 0 -static -n -nostdlib |
| 93 | KBUILD_AFLAGS_MODULE += -mlong-calls |
| 94 | KBUILD_CFLAGS_MODULE += -mlong-calls |
| 95 | |
| 96 | cflags-y += -ffreestanding |
| 97 | |
| 98 | # |
| 99 | # We explicitly add the endianness specifier if needed, this allows |
| 100 | # to compile kernels with a toolchain for the other endianness. We |
| 101 | # carefully avoid to add it redundantly because gcc 3.3/3.4 complains |
| 102 | # when fed the toolchain default! |
| 103 | # |
| 104 | # Certain gcc versions up to gcc 4.1.1 (probably 4.2-subversion as of |
| 105 | # 2006-10-10 don't properly change the predefined symbols if -EB / -EL |
| 106 | # are used, so we kludge that here. A bug has been filed at |
| 107 | # http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29413. |
| 108 | # |
| 109 | undef-all += -UMIPSEB -U_MIPSEB -U__MIPSEB -U__MIPSEB__ |
| 110 | undef-all += -UMIPSEL -U_MIPSEL -U__MIPSEL -U__MIPSEL__ |
| 111 | predef-be += -DMIPSEB -D_MIPSEB -D__MIPSEB -D__MIPSEB__ |
| 112 | predef-le += -DMIPSEL -D_MIPSEL -D__MIPSEL -D__MIPSEL__ |
| 113 | cflags-$(CONFIG_CPU_BIG_ENDIAN) += $(shell $(CC) -dumpmachine |grep -q 'mips.*el-.*' && echo -EB $(undef-all) $(predef-be)) |
| 114 | cflags-$(CONFIG_CPU_LITTLE_ENDIAN) += $(shell $(CC) -dumpmachine |grep -q 'mips.*el-.*' || echo -EL $(undef-all) $(predef-le)) |
| 115 | |
| 116 | cflags-$(CONFIG_CPU_HAS_SMARTMIPS) += $(call cc-option,-msmartmips) |
| 117 | |
| 118 | cflags-$(CONFIG_SB1XXX_CORELIS) += $(call cc-option,-mno-sched-prolog) \ |
| 119 | -fno-omit-frame-pointer |
| 120 | |
| 121 | # |
| 122 | # CPU-dependent compiler/assembler options for optimization. |
| 123 | # |
| 124 | cflags-$(CONFIG_CPU_R3000) += -march=r3000 |
| 125 | cflags-$(CONFIG_CPU_TX39XX) += -march=r3900 |
| 126 | cflags-$(CONFIG_CPU_R6000) += -march=r6000 -Wa,--trap |
| 127 | cflags-$(CONFIG_CPU_R4300) += -march=r4300 -Wa,--trap |
| 128 | cflags-$(CONFIG_CPU_VR41XX) += -march=r4100 -Wa,--trap |
| 129 | cflags-$(CONFIG_CPU_R4X00) += -march=r4600 -Wa,--trap |
| 130 | cflags-$(CONFIG_CPU_TX49XX) += -march=r4600 -Wa,--trap |
| 131 | cflags-$(CONFIG_CPU_MIPS32_R1) += $(call cc-option,-march=mips32,-mips32 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS32) \ |
| 132 | -Wa,-mips32 -Wa,--trap |
| 133 | cflags-$(CONFIG_CPU_MIPS32_R2) += $(call cc-option,-march=mips32r2,-mips32r2 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS32) \ |
| 134 | -Wa,-mips32r2 -Wa,--trap |
| 135 | cflags-$(CONFIG_CPU_MIPS64_R1) += $(call cc-option,-march=mips64,-mips64 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS64) \ |
| 136 | -Wa,-mips64 -Wa,--trap |
| 137 | cflags-$(CONFIG_CPU_MIPS64_R2) += $(call cc-option,-march=mips64r2,-mips64r2 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS64) \ |
| 138 | -Wa,-mips64r2 -Wa,--trap |
| 139 | cflags-$(CONFIG_CPU_R5000) += -march=r5000 -Wa,--trap |
| 140 | cflags-$(CONFIG_CPU_R5432) += $(call cc-option,-march=r5400,-march=r5000) \ |
| 141 | -Wa,--trap |
| 142 | cflags-$(CONFIG_CPU_R5500) += $(call cc-option,-march=r5500,-march=r5000) \ |
| 143 | -Wa,--trap |
| 144 | cflags-$(CONFIG_CPU_NEVADA) += $(call cc-option,-march=rm5200,-march=r5000) \ |
| 145 | -Wa,--trap |
| 146 | cflags-$(CONFIG_CPU_RM7000) += $(call cc-option,-march=rm7000,-march=r5000) \ |
| 147 | -Wa,--trap |
| 148 | cflags-$(CONFIG_CPU_RM9000) += $(call cc-option,-march=rm9000,-march=r5000) \ |
| 149 | -Wa,--trap |
| 150 | cflags-$(CONFIG_CPU_SB1) += $(call cc-option,-march=sb1,-march=r5000) \ |
| 151 | -Wa,--trap |
| 152 | cflags-$(CONFIG_CPU_R8000) += -march=r8000 -Wa,--trap |
| 153 | cflags-$(CONFIG_CPU_R10000) += $(call cc-option,-march=r10000,-march=r8000) \ |
| 154 | -Wa,--trap |
| 155 | cflags-$(CONFIG_CPU_CAVIUM_OCTEON) += $(call cc-option,-march=octeon) -Wa,--trap |
| 156 | ifeq (,$(findstring march=octeon, $(cflags-$(CONFIG_CPU_CAVIUM_OCTEON)))) |
| 157 | cflags-$(CONFIG_CPU_CAVIUM_OCTEON) += -Wa,-march=octeon |
| 158 | endif |
| 159 | cflags-$(CONFIG_CAVIUM_CN63XXP1) += -Wa,-mfix-cn63xxp1 |
| 160 | cflags-$(CONFIG_CPU_BMIPS) += -march=mips32 -Wa,-mips32 -Wa,--trap |
| 161 | |
| 162 | cflags-$(CONFIG_CPU_R4000_WORKAROUNDS) += $(call cc-option,-mfix-r4000,) |
| 163 | cflags-$(CONFIG_CPU_R4400_WORKAROUNDS) += $(call cc-option,-mfix-r4400,) |
| 164 | cflags-$(CONFIG_CPU_DADDI_WORKAROUNDS) += $(call cc-option,-mno-daddi,) |
| 165 | |
| 166 | ifdef CONFIG_CPU_SB1 |
| 167 | ifdef CONFIG_SB1_PASS_1_WORKAROUNDS |
| 168 | KBUILD_AFLAGS_MODULE += -msb1-pass1-workarounds |
| 169 | KBUILD_CFLAGS_MODULE += -msb1-pass1-workarounds |
| 170 | endif |
| 171 | endif |
| 172 | |
| 173 | # |
| 174 | # Firmware support |
| 175 | # |
| 176 | libs-$(CONFIG_ARC) += arch/mips/fw/arc/ |
| 177 | libs-$(CONFIG_CFE) += arch/mips/fw/cfe/ |
| 178 | libs-$(CONFIG_SNIPROM) += arch/mips/fw/sni/ |
| 179 | libs-y += arch/mips/fw/lib/ |
| 180 | |
| 181 | # |
| 182 | # Kernel compression |
| 183 | # |
| 184 | ifdef SYS_SUPPORTS_ZBOOT |
| 185 | COMPRESSION_FNAME = vmlinuz |
| 186 | else |
| 187 | COMPRESSION_FNAME = vmlinux |
| 188 | endif |
| 189 | |
| 190 | # |
| 191 | # Board-dependent options and extra files |
| 192 | # |
| 193 | include $(srctree)/arch/mips/Kbuild.platforms |
| 194 | |
| 195 | cflags-y += -I$(srctree)/arch/mips/include/asm/mach-generic |
| 196 | drivers-$(CONFIG_PCI) += arch/mips/pci/ |
| 197 | |
| 198 | # |
| 199 | # Automatically detect the build format. By default we choose |
| 200 | # the elf format according to the load address. |
| 201 | # We can always force a build with a 64-bits symbol format by |
| 202 | # passing 'KBUILD_SYM32=no' option to the make's command line. |
| 203 | # |
| 204 | ifdef CONFIG_64BIT |
| 205 | ifndef KBUILD_SYM32 |
| 206 | ifeq ($(shell expr $(load-y) \< 0xffffffff80000000), 0) |
| 207 | KBUILD_SYM32 = y |
| 208 | endif |
| 209 | endif |
| 210 | |
| 211 | ifeq ($(KBUILD_SYM32)$(call cc-option-yn,-msym32), yy) |
| 212 | cflags-y += -msym32 -DKBUILD_64BIT_SYM32 |
| 213 | else |
| 214 | ifeq ($(CONFIG_CPU_DADDI_WORKAROUNDS), y) |
| 215 | $(error CONFIG_CPU_DADDI_WORKAROUNDS unsupported without -msym32) |
| 216 | endif |
| 217 | endif |
| 218 | endif |
| 219 | |
| 220 | KBUILD_AFLAGS += $(cflags-y) |
| 221 | KBUILD_CFLAGS += $(cflags-y) |
| 222 | KBUILD_CPPFLAGS += -D"VMLINUX_LOAD_ADDRESS=$(load-y)" |
| 223 | KBUILD_CPPFLAGS += -D"DATAOFFSET=$(if $(dataoffset-y),$(dataoffset-y),0)" |
| 224 | |
| 225 | LDFLAGS += -m $(ld-emul) |
| 226 | |
| 227 | ifdef CONFIG_MIPS |
| 228 | CHECKFLAGS += $(shell $(CC) $(KBUILD_CFLAGS) -dM -E -xc /dev/null | \ |
| 229 | egrep -vw '__GNUC_(|MINOR_|PATCHLEVEL_)_' | \ |
| 230 | sed -e "s/^\#define /-D'/" -e "s/ /'='/" -e "s/$$/'/") |
| 231 | ifdef CONFIG_64BIT |
| 232 | CHECKFLAGS += -m64 |
| 233 | endif |
| 234 | endif |
| 235 | |
| 236 | OBJCOPYFLAGS += --remove-section=.reginfo |
| 237 | |
| 238 | head-y := arch/mips/kernel/head.o arch/mips/kernel/init_task.o |
| 239 | |
| 240 | libs-y += arch/mips/lib/ |
| 241 | |
| 242 | # See arch/mips/Kbuild for content of core part of the kernel |
| 243 | core-y += arch/mips/ |
| 244 | |
| 245 | drivers-$(CONFIG_OPROFILE) += arch/mips/oprofile/ |
| 246 | |
| 247 | # suspend and hibernation support |
| 248 | drivers-$(CONFIG_PM) += arch/mips/power/ |
| 249 | |
| 250 | ifdef CONFIG_LASAT |
| 251 | rom.bin rom.sw: vmlinux |
| 252 | $(Q)$(MAKE) $(build)=arch/mips/lasat/image $@ |
| 253 | endif |
| 254 | |
| 255 | # |
| 256 | # Some machines like the Indy need 32-bit ELF binaries for booting purposes. |
| 257 | # Other need ECOFF, so we build a 32-bit ELF binary for them which we then |
| 258 | # convert to ECOFF using elf2ecoff. |
| 259 | # |
| 260 | vmlinux.32: vmlinux |
| 261 | $(OBJCOPY) -O $(32bit-bfd) $(OBJCOPYFLAGS) $< $@ |
| 262 | |
| 263 | |
| 264 | #obj-$(CONFIG_KPROBES) += kprobes.o |
| 265 | |
| 266 | # |
| 267 | # The 64-bit ELF tools are pretty broken so at this time we generate 64-bit |
| 268 | # ELF files from 32-bit files by conversion. |
| 269 | # |
| 270 | vmlinux.64: vmlinux |
| 271 | $(OBJCOPY) -O $(64bit-bfd) $(OBJCOPYFLAGS) $< $@ |
| 272 | |
| 273 | all: $(all-y) |
| 274 | |
| 275 | # boot |
| 276 | vmlinux.bin vmlinux.ecoff vmlinux.srec: $(vmlinux-32) FORCE |
| 277 | $(Q)$(MAKE) $(build)=arch/mips/boot VMLINUX=$(vmlinux-32) arch/mips/boot/$@ |
| 278 | |
| 279 | # boot/compressed |
| 280 | vmlinuz vmlinuz.bin vmlinuz.ecoff vmlinuz.srec: $(vmlinux-32) FORCE |
| 281 | $(Q)$(MAKE) $(build)=arch/mips/boot/compressed \ |
| 282 | VMLINUX_LOAD_ADDRESS=$(load-y) 32bit-bfd=$(32bit-bfd) $@ |
| 283 | |
| 284 | |
| 285 | CLEAN_FILES += vmlinux.32 vmlinux.64 |
| 286 | |
| 287 | archprepare: |
| 288 | ifdef CONFIG_MIPS32_N32 |
| 289 | @echo ' Checking missing-syscalls for N32' |
| 290 | $(Q)$(MAKE) $(build)=. missing-syscalls missing_syscalls_flags="-mabi=n32" |
| 291 | endif |
| 292 | ifdef CONFIG_MIPS32_O32 |
| 293 | @echo ' Checking missing-syscalls for O32' |
| 294 | $(Q)$(MAKE) $(build)=. missing-syscalls missing_syscalls_flags="-mabi=32" |
| 295 | endif |
| 296 | |
| 297 | install: |
| 298 | $(Q)install -D -m 755 vmlinux $(INSTALL_PATH)/vmlinux-$(KERNELRELEASE) |
| 299 | ifdef CONFIG_SYS_SUPPORTS_ZBOOT |
| 300 | $(Q)install -D -m 755 vmlinuz $(INSTALL_PATH)/vmlinuz-$(KERNELRELEASE) |
| 301 | endif |
| 302 | $(Q)install -D -m 644 .config $(INSTALL_PATH)/config-$(KERNELRELEASE) |
| 303 | $(Q)install -D -m 644 System.map $(INSTALL_PATH)/System.map-$(KERNELRELEASE) |
| 304 | |
| 305 | archclean: |
| 306 | $(Q)$(MAKE) $(clean)=arch/mips/boot |
| 307 | $(Q)$(MAKE) $(clean)=arch/mips/boot/compressed |
| 308 | $(Q)$(MAKE) $(clean)=arch/mips/lasat |
| 309 | |
| 310 | define archhelp |
| 311 | echo ' install - install kernel into $(INSTALL_PATH)' |
| 312 | echo ' vmlinux.ecoff - ECOFF boot image' |
| 313 | echo ' vmlinux.bin - Raw binary boot image' |
| 314 | echo ' vmlinux.srec - SREC boot image' |
| 315 | echo ' vmlinuz - Compressed boot(zboot) image' |
| 316 | echo ' vmlinuz.ecoff - ECOFF zboot image' |
| 317 | echo ' vmlinuz.bin - Raw binary zboot image' |
| 318 | echo ' vmlinuz.srec - SREC zboot image' |
| 319 | echo |
| 320 | echo ' These will be default as appropriate for a configured platform.' |
| 321 | endef |