1 # This file is included by the global makefile <<
2 # architecture-specific flags and dependencies <<
3 # 1 #
4 # This file is subject to the terms and condit 2 # This file is subject to the terms and conditions of the GNU General Public
5 # License. See the file "COPYING" in the main 3 # License. See the file "COPYING" in the main directory of this archive
6 # for more details. 4 # for more details.
7 # 5 #
8 # Copyright (C) 1994 by Linus Torvalds !! 6 # Copyright (C) 1994, 95, 96, 2003 by Ralf Baechle
9 # Changes for PPC by Gary Thomas !! 7 # DECStation modifications by Paul M. Antoine, 1996
10 # Rewritten by Cort Dougan and Paul Mackerras !! 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.
11 # 13 #
12 14
13 ifdef cross_compiling !! 15 archscripts: scripts_basic
14 ifeq ($(CROSS_COMPILE),) !! 16 $(Q)$(MAKE) $(build)=arch/mips/boot/tools relocs
15 # Auto detect cross compiler prefix. <<
16 # Look for: (powerpc(64(le)?)?)(-unknown)? <<
17 CC_ARCHES := powerpc powerpc64 powerpc64le <<
18 CC_SUFFIXES := linux linux-gnu unknown-lin <<
19 CROSS_COMPILE := $(call cc-cross-prefix, $ <<
20 $(foreach s,$(CC_SUFFIX <<
21 endif <<
22 endif <<
23 17
24 HAS_BIARCH := $(call cc-option-yn, -m32) !! 18 KBUILD_DEFCONFIG := ip22_defconfig
25 19
26 # Set default 32 bits cross compilers for vdso !! 20 #
27 CROSS32_COMPILE ?= !! 21 # Select the object file format to substitute into the linker script.
>> 22 #
>> 23 ifdef CONFIG_CPU_LITTLE_ENDIAN
>> 24 32bit-tool-archpref = mipsel
>> 25 64bit-tool-archpref = mips64el
>> 26 32bit-bfd = elf32-tradlittlemips
>> 27 64bit-bfd = elf64-tradlittlemips
>> 28 32bit-emul = elf32ltsmip
>> 29 64bit-emul = elf64ltsmip
>> 30 else
>> 31 32bit-tool-archpref = mips
>> 32 64bit-tool-archpref = mips64
>> 33 32bit-bfd = elf32-tradbigmips
>> 34 64bit-bfd = elf64-tradbigmips
>> 35 32bit-emul = elf32btsmip
>> 36 64bit-emul = elf64btsmip
>> 37 endif
28 38
29 # If we're on a ppc/ppc64/ppc64le machine use !! 39 ifdef CONFIG_32BIT
30 # ppc64le_defconfig because we have nothing be !! 40 tool-archpref = $(32bit-tool-archpref)
31 uname := $(shell uname -m) !! 41 UTS_MACHINE := mips
32 KBUILD_DEFCONFIG := $(if $(filter ppc%,$(uname !! 42 endif
>> 43 ifdef CONFIG_64BIT
>> 44 tool-archpref = $(64bit-tool-archpref)
>> 45 UTS_MACHINE := mips64
>> 46 endif
33 47
34 new_nm := $(shell if $(NM) --help 2>&1 | grep !! 48 ifneq ($(SUBARCH),$(ARCH))
>> 49 ifeq ($(CROSS_COMPILE),)
>> 50 CROSS_COMPILE := $(call cc-cross-prefix, $(tool-archpref)-linux- $(tool-archpref)-linux-gnu- $(tool-archpref)-unknown-linux-gnu-)
>> 51 endif
>> 52 endif
35 53
36 ifeq ($(new_nm),y) !! 54 ifdef CONFIG_FUNCTION_GRAPH_TRACER
37 NM := $(NM) --synthetic !! 55 ifndef KBUILD_MCOUNT_RA_ADDRESS
>> 56 ifeq ($(call cc-option-yn,-mmcount-ra-address), y)
>> 57 cflags-y += -mmcount-ra-address -DKBUILD_MCOUNT_RA_ADDRESS
>> 58 endif
>> 59 endif
38 endif 60 endif
>> 61 cflags-y += $(call cc-option, -mno-check-zero-division)
39 62
40 # BITS is used as extension for files which ar !! 63 ifdef CONFIG_32BIT
41 # and a 64 bit version to simplify shared Make !! 64 ld-emul = $(32bit-emul)
42 # e.g.: obj-y += foo_$(BITS).o !! 65 vmlinux-32 = vmlinux
43 export BITS !! 66 vmlinux-64 = vmlinux.64
44 67
45 ifdef CONFIG_PPC64 !! 68 cflags-y += -mabi=32
46 BITS := 64 <<
47 else <<
48 BITS := 32 <<
49 endif 69 endif
50 70
51 machine-y = ppc !! 71 ifdef CONFIG_64BIT
52 machine-$(CONFIG_PPC64) += 64 !! 72 ld-emul = $(64bit-emul)
53 machine-$(CONFIG_CPU_LITTLE_ENDIAN) += le !! 73 vmlinux-32 = vmlinux.32
54 UTS_MACHINE := $(subst $(space),,$(machine-y)) !! 74 vmlinux-64 = vmlinux
55 <<
56 ifeq ($(CONFIG_PPC64)$(CONFIG_LD_IS_BFD),yy) <<
57 # Have the linker provide sfpr if possible. <<
58 # There is a corresponding test in arch/powerp <<
59 KBUILD_LDFLAGS_MODULE += --save-restore-funcs <<
60 else <<
61 KBUILD_LDFLAGS_MODULE += arch/powerpc/lib/crts <<
62 endif <<
63 75
64 ifdef CONFIG_CPU_LITTLE_ENDIAN !! 76 cflags-y += -mabi=64
65 KBUILD_CFLAGS += -mlittle-endian <<
66 KBUILD_LDFLAGS += -EL <<
67 LDEMULATION := lppc <<
68 GNUTARGET := powerpcle <<
69 MULTIPLEWORD := -mno-multiple <<
70 KBUILD_CFLAGS_MODULE += $(call cc-option,-mno- <<
71 else <<
72 KBUILD_CFLAGS += $(call cc-option,-mbig-endian <<
73 KBUILD_LDFLAGS += -EB <<
74 LDEMULATION := ppc <<
75 GNUTARGET := powerpc <<
76 MULTIPLEWORD := -mmultiple <<
77 endif 77 endif
78 78
79 ifdef CONFIG_PPC64 !! 79 all-$(CONFIG_BOOT_ELF32) := $(vmlinux-32)
80 ifndef CONFIG_CC_IS_CLANG !! 80 all-$(CONFIG_BOOT_ELF64) := $(vmlinux-64)
81 cflags-$(CONFIG_PPC64_ELF_ABI_V1) += $(c !! 81 all-$(CONFIG_SYS_SUPPORTS_ZBOOT)+= vmlinuz
82 cflags-$(CONFIG_PPC64_ELF_ABI_V1) += $(c !! 82
83 aflags-$(CONFIG_PPC64_ELF_ABI_V1) += $(c !! 83 #
84 aflags-$(CONFIG_PPC64_ELF_ABI_V2) += -ma !! 84 # GCC uses -G 0 -mabicalls -fpic as default. We don't want PIC in the kernel
85 endif !! 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 $28 conflicts with
>> 87 # the current pointer optimization.
>> 88 #
>> 89 # The DECStation requires an ECOFF kernel for remote booting, other MIPS
>> 90 # machines may also. Since BFD is incredibly buggy with respect to
>> 91 # crossformat linking we rely on the elf2ecoff tool for format conversion.
>> 92 #
>> 93 cflags-y += -G 0 -mno-abicalls -fno-pic -pipe
>> 94 cflags-y += -msoft-float
>> 95 LDFLAGS_vmlinux += -G 0 -static -n -nostdlib
>> 96 KBUILD_AFLAGS_MODULE += -mlong-calls
>> 97 KBUILD_CFLAGS_MODULE += -mlong-calls
>> 98
>> 99 ifeq ($(CONFIG_RELOCATABLE),y)
>> 100 LDFLAGS_vmlinux += --emit-relocs
86 endif 101 endif
87 102
88 ifndef CONFIG_CC_IS_CLANG !! 103 #
89 cflags-$(CONFIG_CPU_LITTLE_ENDIAN) += -mn !! 104 # pass -msoft-float to GAS if it supports it. However on newer binutils
>> 105 # (specifically newer than 2.24.51.20140728) we then also need to explicitly
>> 106 # set ".set hardfloat" in all files which manipulate floating point registers.
>> 107 #
>> 108 ifneq ($(call as-option,-Wa$(comma)-msoft-float,),)
>> 109 cflags-y += -DGAS_HAS_SET_HARDFLOAT -Wa,-msoft-float
90 endif 110 endif
91 111
92 cflags-$(CONFIG_CPU_BIG_ENDIAN) += $(c !! 112 cflags-y += -ffreestanding
93 cflags-$(CONFIG_CPU_LITTLE_ENDIAN) += -ml <<
94 aflags-$(CONFIG_CPU_BIG_ENDIAN) += $(c <<
95 aflags-$(CONFIG_CPU_LITTLE_ENDIAN) += -ml <<
96 113
97 ifeq ($(HAS_BIARCH),y) !! 114 #
98 KBUILD_CFLAGS += -m$(BITS) !! 115 # We explicitly add the endianness specifier if needed, this allows
99 KBUILD_AFLAGS += -m$(BITS) !! 116 # to compile kernels with a toolchain for the other endianness. We
100 KBUILD_LDFLAGS += -m elf$(BITS)$(LDEMULATION) !! 117 # carefully avoid to add it redundantly because gcc 3.3/3.4 complains
>> 118 # when fed the toolchain default!
>> 119 #
>> 120 # Certain gcc versions up to gcc 4.1.1 (probably 4.2-subversion as of
>> 121 # 2006-10-10 don't properly change the predefined symbols if -EB / -EL
>> 122 # are used, so we kludge that here. A bug has been filed at
>> 123 # http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29413.
>> 124 #
>> 125 undef-all += -UMIPSEB -U_MIPSEB -U__MIPSEB -U__MIPSEB__
>> 126 undef-all += -UMIPSEL -U_MIPSEL -U__MIPSEL -U__MIPSEL__
>> 127 predef-be += -DMIPSEB -D_MIPSEB -D__MIPSEB -D__MIPSEB__
>> 128 predef-le += -DMIPSEL -D_MIPSEL -D__MIPSEL -D__MIPSEL__
>> 129 cflags-$(CONFIG_CPU_BIG_ENDIAN) += $(shell $(CC) -dumpmachine |grep -q 'mips.*el-.*' && echo -EB $(undef-all) $(predef-be))
>> 130 cflags-$(CONFIG_CPU_LITTLE_ENDIAN) += $(shell $(CC) -dumpmachine |grep -q 'mips.*el-.*' || echo -EL $(undef-all) $(predef-le))
>> 131
>> 132 cflags-$(CONFIG_SB1XXX_CORELIS) += $(call cc-option,-mno-sched-prolog) \
>> 133 -fno-omit-frame-pointer
>> 134
>> 135 # Some distribution-specific toolchains might pass the -fstack-check
>> 136 # option during the build, which adds a simple stack-probe at the beginning
>> 137 # of every function. This stack probe is to ensure that there is enough
>> 138 # stack space, else a SEGV is generated. This is not desirable for MIPS
>> 139 # as kernel stacks are small, placed in unmapped virtual memory, and do not
>> 140 # grow when overflowed. Especially on SGI IP27 platforms, this check will
>> 141 # lead to a NULL pointer dereference in _raw_spin_lock_irq.
>> 142 #
>> 143 # In disassembly, this stack probe appears at the top of a function as:
>> 144 # sd zero,<offset>(sp)
>> 145 # Where <offset> is a negative value.
>> 146 #
>> 147 cflags-y += -fno-stack-check
>> 148
>> 149 #
>> 150 # CPU-dependent compiler/assembler options for optimization.
>> 151 #
>> 152 cflags-$(CONFIG_CPU_R3000) += -march=r3000
>> 153 cflags-$(CONFIG_CPU_TX39XX) += -march=r3900
>> 154 cflags-$(CONFIG_CPU_R6000) += -march=r6000 -Wa,--trap
>> 155 cflags-$(CONFIG_CPU_R4300) += -march=r4300 -Wa,--trap
>> 156 cflags-$(CONFIG_CPU_VR41XX) += -march=r4100 -Wa,--trap
>> 157 cflags-$(CONFIG_CPU_R4X00) += -march=r4600 -Wa,--trap
>> 158 cflags-$(CONFIG_CPU_TX49XX) += -march=r4600 -Wa,--trap
>> 159 cflags-$(CONFIG_CPU_MIPS32_R1) += $(call cc-option,-march=mips32,-mips32 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS32) \
>> 160 -Wa,-mips32 -Wa,--trap
>> 161 cflags-$(CONFIG_CPU_MIPS32_R2) += $(call cc-option,-march=mips32r2,-mips32r2 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS32) \
>> 162 -Wa,-mips32r2 -Wa,--trap
>> 163 cflags-$(CONFIG_CPU_MIPS32_R6) += -march=mips32r6 -Wa,--trap -modd-spreg
>> 164 cflags-$(CONFIG_CPU_MIPS64_R1) += $(call cc-option,-march=mips64,-mips64 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS64) \
>> 165 -Wa,-mips64 -Wa,--trap
>> 166 cflags-$(CONFIG_CPU_MIPS64_R2) += $(call cc-option,-march=mips64r2,-mips64r2 -U_MIPS_ISA -D_MIPS_ISA=_MIPS_ISA_MIPS64) \
>> 167 -Wa,-mips64r2 -Wa,--trap
>> 168 cflags-$(CONFIG_CPU_MIPS64_R6) += -march=mips64r6 -Wa,--trap
>> 169 cflags-$(CONFIG_CPU_R5000) += -march=r5000 -Wa,--trap
>> 170 cflags-$(CONFIG_CPU_R5432) += $(call cc-option,-march=r5400,-march=r5000) \
>> 171 -Wa,--trap
>> 172 cflags-$(CONFIG_CPU_R5500) += $(call cc-option,-march=r5500,-march=r5000) \
>> 173 -Wa,--trap
>> 174 cflags-$(CONFIG_CPU_NEVADA) += $(call cc-option,-march=rm5200,-march=r5000) \
>> 175 -Wa,--trap
>> 176 cflags-$(CONFIG_CPU_RM7000) += $(call cc-option,-march=rm7000,-march=r5000) \
>> 177 -Wa,--trap
>> 178 cflags-$(CONFIG_CPU_SB1) += $(call cc-option,-march=sb1,-march=r5000) \
>> 179 -Wa,--trap
>> 180 cflags-$(CONFIG_CPU_SB1) += $(call cc-option,-mno-mdmx)
>> 181 cflags-$(CONFIG_CPU_SB1) += $(call cc-option,-mno-mips3d)
>> 182 cflags-$(CONFIG_CPU_R8000) += -march=r8000 -Wa,--trap
>> 183 cflags-$(CONFIG_CPU_R10000) += $(call cc-option,-march=r10000,-march=r8000) \
>> 184 -Wa,--trap
>> 185 cflags-$(CONFIG_CPU_CAVIUM_OCTEON) += $(call cc-option,-march=octeon) -Wa,--trap
>> 186 ifeq (,$(findstring march=octeon, $(cflags-$(CONFIG_CPU_CAVIUM_OCTEON))))
>> 187 cflags-$(CONFIG_CPU_CAVIUM_OCTEON) += -Wa,-march=octeon
>> 188 endif
>> 189 cflags-$(CONFIG_CAVIUM_CN63XXP1) += -Wa,-mfix-cn63xxp1
>> 190 cflags-$(CONFIG_CPU_BMIPS) += -march=mips32 -Wa,-mips32 -Wa,--trap
>> 191
>> 192 cflags-$(CONFIG_CPU_R4000_WORKAROUNDS) += $(call cc-option,-mfix-r4000,)
>> 193 cflags-$(CONFIG_CPU_R4400_WORKAROUNDS) += $(call cc-option,-mfix-r4400,)
>> 194 cflags-$(CONFIG_CPU_DADDI_WORKAROUNDS) += $(call cc-option,-mno-daddi,)
>> 195
>> 196 # For smartmips configurations, there are hundreds of warnings due to ISA overrides
>> 197 # in assembly and header files. smartmips is only supported for MIPS32r1 onwards
>> 198 # and there is no support for 64-bit. Various '.set mips2' or '.set mips3' or
>> 199 # similar directives in the kernel will spam the build logs with the following warnings:
>> 200 # Warning: the `smartmips' extension requires MIPS32 revision 1 or greater
>> 201 # or
>> 202 # Warning: the 64-bit MIPS architecture does not support the `smartmips' extension
>> 203 # Pass -Wa,--no-warn to disable all assembler warnings until the kernel code has
>> 204 # been fixed properly.
>> 205 mips-cflags := $(cflags-y)
>> 206 ifeq ($(CONFIG_CPU_HAS_SMARTMIPS),y)
>> 207 smartmips-ase := $(call cc-option-yn,$(mips-cflags) -msmartmips)
>> 208 cflags-$(smartmips-ase) += -msmartmips -Wa,--no-warn
>> 209 endif
>> 210 ifeq ($(CONFIG_CPU_MICROMIPS),y)
>> 211 micromips-ase := $(call cc-option-yn,$(mips-cflags) -mmicromips)
>> 212 cflags-$(micromips-ase) += -mmicromips
>> 213 endif
>> 214 ifeq ($(CONFIG_CPU_HAS_MSA),y)
>> 215 toolchain-msa := $(call cc-option-yn,$(mips-cflags) -mhard-float -mfp64 -Wa$(comma)-mmsa)
>> 216 cflags-$(toolchain-msa) += -DTOOLCHAIN_SUPPORTS_MSA
101 endif 217 endif
>> 218 toolchain-virt := $(call cc-option-yn,$(mips-cflags) -mvirt)
>> 219 cflags-$(toolchain-virt) += -DTOOLCHAIN_SUPPORTS_VIRT
102 220
103 cflags-$(CONFIG_STACKPROTECTOR) += -mstack-pro !! 221 #
104 ifdef CONFIG_PPC64 !! 222 # Firmware support
105 cflags-$(CONFIG_STACKPROTECTOR) += -mstack-pro !! 223 #
>> 224 libs-$(CONFIG_FW_ARC) += arch/mips/fw/arc/
>> 225 libs-$(CONFIG_FW_CFE) += arch/mips/fw/cfe/
>> 226 libs-$(CONFIG_FW_SNIPROM) += arch/mips/fw/sni/
>> 227 libs-y += arch/mips/fw/lib/
>> 228
>> 229 #
>> 230 # Kernel compression
>> 231 #
>> 232 ifdef SYS_SUPPORTS_ZBOOT
>> 233 COMPRESSION_FNAME = vmlinuz
106 else 234 else
107 cflags-$(CONFIG_STACKPROTECTOR) += -mstack-pro !! 235 COMPRESSION_FNAME = vmlinux
108 endif 236 endif
109 237
110 LDFLAGS_vmlinux-y := -Bstatic !! 238 #
111 LDFLAGS_vmlinux-$(CONFIG_RELOCATABLE) := -pie !! 239 # Board-dependent options and extra files
112 LDFLAGS_vmlinux-$(CONFIG_RELOCATABLE) += -z no !! 240 #
113 LDFLAGS_vmlinux := $(LDFLAGS_vmlinux-y) !! 241 include arch/mips/Kbuild.platforms
114 !! 242
115 ifdef CONFIG_PPC64 !! 243 ifdef CONFIG_PHYSICAL_START
116 ifndef CONFIG_PPC_KERNEL_PCREL !! 244 load-y = $(CONFIG_PHYSICAL_START)
117 # -mcmodel=medium breaks modules becau <<
118 # the TOC pointer to create pointers w <<
119 # percpu data area are created by this <<
120 # <<
121 # The kernel module loader relocates t <<
122 # original location (starting with 0xd <<
123 # kernel percpu data space (starting w <<
124 # 64bit relocation for this to work, h <<
125 KBUILD_CFLAGS_MODULE += -mcmodel=large <<
126 endif <<
127 endif 245 endif
128 246
129 CFLAGS-$(CONFIG_PPC64) := $(call cc-option,-m !! 247 entry-noisa-y = 0x$(shell $(NM) vmlinux 2>/dev/null \
130 ifdef CONFIG_PPC64_ELF_ABI_V2 !! 248 | grep "\bkernel_entry\b" | cut -f1 -d \ )
131 CFLAGS-$(CONFIG_PPC64) += $(call cc-option,-m !! 249 ifdef CONFIG_CPU_MICROMIPS
>> 250 #
>> 251 # Set the ISA bit, since the kernel_entry symbol in the ELF will have it
>> 252 # clear which would lead to images containing addresses which bootloaders may
>> 253 # jump to as MIPS32 code.
>> 254 #
>> 255 entry-y = $(patsubst %0,%1,$(patsubst %2,%3,$(patsubst %4,%5, \
>> 256 $(patsubst %6,%7,$(patsubst %8,%9,$(patsubst %a,%b, \
>> 257 $(patsubst %c,%d,$(patsubst %e,%f,$(entry-noisa-y)))))))))
132 else 258 else
133 ifndef CONFIG_CC_IS_CLANG !! 259 entry-y = $(entry-noisa-y)
134 CFLAGS-$(CONFIG_PPC64) += $(call cc-option,-m <<
135 CFLAGS-$(CONFIG_PPC64) += $(call cc-option,-m <<
136 endif <<
137 endif 260 endif
138 CFLAGS-$(CONFIG_PPC64) += -mcmodel=medium <<
139 CFLAGS-$(CONFIG_PPC64) += $(call cc-option,-m <<
140 CFLAGS-$(CONFIG_PPC64) += $(call cc-option,-m <<
141 261
142 # Clang unconditionally reserves r2 on ppc32 a !! 262 cflags-y += -I$(srctree)/arch/mips/include/asm/mach-generic
143 # https://llvm.org/pr39555 !! 263 drivers-$(CONFIG_PCI) += arch/mips/pci/
144 CFLAGS-$(CONFIG_PPC32) := $(call cc-option, - <<
145 264
146 # Clang doesn't support -mmultiple / -mno-mult !! 265 #
147 # https://llvm.org/pr39556 !! 266 # Automatically detect the build format. By default we choose
148 CFLAGS-$(CONFIG_PPC32) += $(call cc-option, $ !! 267 # the elf format according to the load address.
>> 268 # We can always force a build with a 64-bits symbol format by
>> 269 # passing 'KBUILD_SYM32=no' option to the make's command line.
>> 270 #
>> 271 ifdef CONFIG_64BIT
>> 272 ifndef KBUILD_SYM32
>> 273 ifeq ($(shell expr $(load-y) \< 0xffffffff80000000), 0)
>> 274 KBUILD_SYM32 = y
>> 275 endif
>> 276 endif
149 277
150 CFLAGS-$(CONFIG_PPC32) += $(call cc-option,-m !! 278 ifeq ($(KBUILD_SYM32)$(call cc-option-yn,-msym32), yy)
>> 279 cflags-y += -msym32 -DKBUILD_64BIT_SYM32
>> 280 else
>> 281 ifeq ($(CONFIG_CPU_DADDI_WORKAROUNDS), y)
>> 282 $(error CONFIG_CPU_DADDI_WORKAROUNDS unsupported without -msym32)
>> 283 endif
>> 284 endif
>> 285 endif
151 286
152 CC_FLAGS_FPU := $(call cc-option,-m !! 287 KBUILD_AFLAGS += $(cflags-y)
153 CC_FLAGS_NO_FPU := $(call cc-option,-m !! 288 KBUILD_CFLAGS += $(cflags-y)
>> 289 KBUILD_CPPFLAGS += -DVMLINUX_LOAD_ADDRESS=$(load-y)
>> 290 KBUILD_CPPFLAGS += -DDATAOFFSET=$(if $(dataoffset-y),$(dataoffset-y),0)
>> 291
>> 292 bootvars-y = VMLINUX_LOAD_ADDRESS=$(load-y) \
>> 293 VMLINUX_ENTRY_ADDRESS=$(entry-y) \
>> 294 PLATFORM="$(platform-y)"
>> 295 ifdef CONFIG_32BIT
>> 296 bootvars-y += ADDR_BITS=32
>> 297 endif
>> 298 ifdef CONFIG_64BIT
>> 299 bootvars-y += ADDR_BITS=64
>> 300 endif
>> 301
>> 302 LDFLAGS += -m $(ld-emul)
>> 303
>> 304 ifdef CONFIG_MIPS
>> 305 CHECKFLAGS += $(shell $(CC) $(KBUILD_CFLAGS) -dM -E -x c /dev/null | \
>> 306 egrep -vw '__GNUC_(|MINOR_|PATCHLEVEL_)_' | \
>> 307 sed -e "s/^\#define /-D'/" -e "s/ /'='/" -e "s/$$/'/" -e 's/\$$/&&/g')
>> 308 ifdef CONFIG_64BIT
>> 309 CHECKFLAGS += -m64
>> 310 endif
>> 311 endif
>> 312
>> 313 OBJCOPYFLAGS += --remove-section=.reginfo
>> 314
>> 315 head-y := arch/mips/kernel/head.o
>> 316
>> 317 libs-y += arch/mips/lib/
>> 318 libs-y += arch/mips/math-emu/
>> 319
>> 320 # See arch/mips/Kbuild for content of core part of the kernel
>> 321 core-y += arch/mips/
>> 322
>> 323 drivers-$(CONFIG_OPROFILE) += arch/mips/oprofile/
>> 324
>> 325 # suspend and hibernation support
>> 326 drivers-$(CONFIG_PM) += arch/mips/power/
>> 327
>> 328 # boot image targets (arch/mips/boot/)
>> 329 boot-y := vmlinux.bin
>> 330 boot-y += vmlinux.ecoff
>> 331 boot-y += vmlinux.srec
>> 332 ifeq ($(shell expr $(load-y) \< 0xffffffff80000000 2> /dev/null), 0)
>> 333 boot-y += uImage
>> 334 boot-y += uImage.bin
>> 335 boot-y += uImage.bz2
>> 336 boot-y += uImage.gz
>> 337 boot-y += uImage.lzma
>> 338 boot-y += uImage.lzo
>> 339 endif
>> 340 boot-y += vmlinux.itb
>> 341 boot-y += vmlinux.gz.itb
>> 342 boot-y += vmlinux.bz2.itb
>> 343 boot-y += vmlinux.lzma.itb
>> 344 boot-y += vmlinux.lzo.itb
>> 345
>> 346 # compressed boot image targets (arch/mips/boot/compressed/)
>> 347 bootz-y := vmlinuz
>> 348 bootz-y += vmlinuz.bin
>> 349 bootz-y += vmlinuz.ecoff
>> 350 bootz-y += vmlinuz.srec
>> 351 ifeq ($(shell expr $(zload-y) \< 0xffffffff80000000 2> /dev/null), 0)
>> 352 bootz-y += uzImage.bin
>> 353 endif
>> 354
>> 355 ifdef CONFIG_LASAT
>> 356 rom.bin rom.sw: vmlinux
>> 357 $(Q)$(MAKE) $(build)=arch/mips/lasat/image \
>> 358 $(bootvars-y) $@
>> 359 endif
154 360
155 ifdef CONFIG_FUNCTION_TRACER !! 361 #
156 ifdef CONFIG_ARCH_USING_PATCHABLE_FUNCTION_ENT !! 362 # Some machines like the Indy need 32-bit ELF binaries for booting purposes.
157 KBUILD_CPPFLAGS += -DCC_USING_PATCHABLE_FUNCTI !! 363 # Other need ECOFF, so we build a 32-bit ELF binary for them which we then
158 CC_FLAGS_FTRACE := -fpatchable-function-entry= !! 364 # convert to ECOFF using elf2ecoff.
>> 365 #
>> 366 quiet_cmd_32 = OBJCOPY $@
>> 367 cmd_32 = $(OBJCOPY) -O $(32bit-bfd) $(OBJCOPYFLAGS) $< $@
>> 368 vmlinux.32: vmlinux
>> 369 $(call cmd,32)
>> 370
>> 371 #
>> 372 # The 64-bit ELF tools are pretty broken so at this time we generate 64-bit
>> 373 # ELF files from 32-bit files by conversion.
>> 374 #
>> 375 quiet_cmd_64 = OBJCOPY $@
>> 376 cmd_64 = $(OBJCOPY) -O $(64bit-bfd) $(OBJCOPYFLAGS) $< $@
>> 377 vmlinux.64: vmlinux
>> 378 $(call cmd,64)
>> 379
>> 380 all: $(all-y)
>> 381
>> 382 # boot
>> 383 $(boot-y): $(vmlinux-32) FORCE
>> 384 $(Q)$(MAKE) $(build)=arch/mips/boot VMLINUX=$(vmlinux-32) \
>> 385 $(bootvars-y) arch/mips/boot/$@
>> 386
>> 387 ifdef CONFIG_SYS_SUPPORTS_ZBOOT
>> 388 # boot/compressed
>> 389 $(bootz-y): $(vmlinux-32) FORCE
>> 390 $(Q)$(MAKE) $(build)=arch/mips/boot/compressed \
>> 391 $(bootvars-y) 32bit-bfd=$(32bit-bfd) $@
159 else 392 else
160 CC_FLAGS_FTRACE := -pg !! 393 vmlinuz: FORCE
161 ifdef CONFIG_MPROFILE_KERNEL !! 394 @echo ' CONFIG_SYS_SUPPORTS_ZBOOT is not enabled'
162 CC_FLAGS_FTRACE += -mprofile-kernel !! 395 /bin/false
163 endif <<
164 endif <<
165 endif 396 endif
166 397
167 CFLAGS-$(CONFIG_TARGET_CPU_BOOL) += -mcpu=$(CO <<
168 AFLAGS-$(CONFIG_TARGET_CPU_BOOL) += -mcpu=$(CO <<
169 398
170 CFLAGS-y += $(CONFIG_TUNE_CPU) !! 399 CLEAN_FILES += vmlinux.32 vmlinux.64
171 400
172 asinstr := $(call as-instr,lis 9$(comma)foo@hi !! 401 # device-trees
>> 402 core-$(CONFIG_BUILTIN_DTB) += arch/mips/boot/dts/
173 403
174 KBUILD_CPPFLAGS += -I $(srctree)/arch/powerpc !! 404 %.dtb %.dtb.S %.dtb.o: | scripts
175 KBUILD_AFLAGS += $(AFLAGS-y) !! 405 $(Q)$(MAKE) $(build)=arch/mips/boot/dts arch/mips/boot/dts/$@
176 KBUILD_CFLAGS += $(CC_FLAGS_NO_FPU) <<
177 KBUILD_CFLAGS += $(CFLAGS-y) <<
178 CPP = $(CC) -E $(KBUILD_CFLAGS) <<
179 406
180 CHECKFLAGS += -m$(BITS) -D__powerpc__ -D_ !! 407 PHONY += dtbs
181 ifdef CONFIG_CPU_BIG_ENDIAN !! 408 dtbs: scripts
182 CHECKFLAGS += -D__BIG_ENDIAN__ !! 409 $(Q)$(MAKE) $(build)=arch/mips/boot/dts
183 else <<
184 CHECKFLAGS += -D__LITTLE_ENDIAN__ <<
185 endif <<
186 410
187 ifdef CONFIG_476FPE_ERR46 !! 411 PHONY += dtbs_install
188 KBUILD_LDFLAGS_MODULE += --ppc476-work !! 412 dtbs_install:
189 -T $(srctree)/arch/powerpc/pla !! 413 $(Q)$(MAKE) $(dtbinst)=arch/mips/boot/dts
190 endif <<
191 414
192 # No prefix or pcrel !! 415 archprepare:
193 ifdef CONFIG_PPC_KERNEL_PREFIXED !! 416 ifdef CONFIG_MIPS32_N32
194 KBUILD_CFLAGS += $(call cc-option,-mprefixed) !! 417 @$(kecho) ' Checking missing-syscalls for N32'
195 else !! 418 $(Q)$(MAKE) $(build)=. missing-syscalls missing_syscalls_flags="-mabi=n32"
196 KBUILD_CFLAGS += $(call cc-option,-mno-prefixe <<
197 endif 419 endif
198 ifdef CONFIG_PPC_KERNEL_PCREL !! 420 ifdef CONFIG_MIPS32_O32
199 KBUILD_CFLAGS += $(call cc-option,-mpcrel) !! 421 @$(kecho) ' Checking missing-syscalls for O32'
200 else !! 422 $(Q)$(MAKE) $(build)=. missing-syscalls missing_syscalls_flags="-mabi=32"
201 KBUILD_CFLAGS += $(call cc-option,-mno-pcrel) <<
202 endif 423 endif
203 424
204 # No AltiVec or VSX or MMA instructions when b !! 425 install:
205 KBUILD_CFLAGS += $(call cc-option,-mno-altivec !! 426 $(Q)install -D -m 755 vmlinux $(INSTALL_PATH)/vmlinux-$(KERNELRELEASE)
206 KBUILD_CFLAGS += $(call cc-option,-mno-vsx) !! 427 ifdef CONFIG_SYS_SUPPORTS_ZBOOT
207 KBUILD_CFLAGS += $(call cc-option,-mno-mma) !! 428 $(Q)install -D -m 755 vmlinuz $(INSTALL_PATH)/vmlinuz-$(KERNELRELEASE)
208 !! 429 endif
209 # No SPE instruction when building kernel !! 430 $(Q)install -D -m 644 .config $(INSTALL_PATH)/config-$(KERNELRELEASE)
210 # (We use all available options to help semi-b !! 431 $(Q)install -D -m 644 System.map $(INSTALL_PATH)/System.map-$(KERNELRELEASE)
211 KBUILD_CFLAGS += $(call cc-option,-mno-spe) !! 432
212 KBUILD_CFLAGS += $(call cc-option,-mspe=no) !! 433 archclean:
213 !! 434 $(Q)$(MAKE) $(clean)=arch/mips/boot
214 # Don't emit .eh_frame since we have no use fo !! 435 $(Q)$(MAKE) $(clean)=arch/mips/boot/compressed
215 KBUILD_CFLAGS += -fno-asynchronous-unwind-tabl !! 436 $(Q)$(MAKE) $(clean)=arch/mips/boot/tools
216 !! 437 $(Q)$(MAKE) $(clean)=arch/mips/lasat
217 # Never use string load/store instructions as <<
218 # often slow when they are implemented at all <<
219 KBUILD_CFLAGS += $(call cc-option,-m <<
220 <<
221 KBUILD_AFLAGS += $(aflags-y) <<
222 KBUILD_CFLAGS += $(cflags-y) <<
223 <<
224 # Default to zImage, override when needed <<
225 all: zImage <<
226 <<
227 # With make 3.82 we cannot mix normal and wild <<
228 BOOT_TARGETS1 := zImage zImage.initrd uImage <<
229 BOOT_TARGETS2 := zImage% dtbImage% treeImage.% <<
230 <<
231 PHONY += $(BOOT_TARGETS1) $(BOOT_TARGETS2) <<
232 <<
233 boot := arch/powerpc/boot <<
234 <<
235 $(BOOT_TARGETS1): vmlinux <<
236 $(Q)$(MAKE) $(build)=$(boot) $(patsubs <<
237 $(BOOT_TARGETS2): vmlinux <<
238 $(Q)$(MAKE) $(build)=$(boot) $(patsubs <<
239 <<
240 <<
241 PHONY += bootwrapper_install <<
242 bootwrapper_install: <<
243 $(Q)$(MAKE) $(build)=$(boot) $(patsubs <<
244 <<
245 include $(srctree)/scripts/Makefile.defconf <<
246 <<
247 generated_configs += ppc64le_defconfig <<
248 ppc64le_defconfig: <<
249 $(call merge_into_defconfig,ppc64_defc <<
250 <<
251 generated_configs += ppc64le_guest_defconfig <<
252 ppc64le_guest_defconfig: <<
253 $(call merge_into_defconfig,ppc64_defc <<
254 <<
255 generated_configs += ppc64_guest_defconfig <<
256 ppc64_guest_defconfig: <<
257 $(call merge_into_defconfig,ppc64_defc <<
258 <<
259 generated_configs += pseries_le_defconfig <<
260 pseries_le_defconfig: ppc64le_guest_defconfig <<
261 <<
262 generated_configs += pseries_defconfig <<
263 pseries_defconfig: ppc64le_guest_defconfig <<
264 <<
265 generated_configs += powernv_be_defconfig <<
266 powernv_be_defconfig: <<
267 $(call merge_into_defconfig,powernv_de <<
268 <<
269 generated_configs += mpc85xx_defconfig <<
270 mpc85xx_defconfig: <<
271 $(call merge_into_defconfig,mpc85xx_ba <<
272 85xx-32bit 85xx-hw fsl-emb-non <<
273 <<
274 generated_configs += mpc85xx_smp_defconfig <<
275 mpc85xx_smp_defconfig: <<
276 $(call merge_into_defconfig,mpc85xx_ba <<
277 85xx-32bit 85xx-smp 85xx-hw fs <<
278 <<
279 generated_configs += corenet32_smp_defconfig <<
280 corenet32_smp_defconfig: <<
281 $(call merge_into_defconfig,corenet_ba <<
282 85xx-32bit 85xx-smp 85xx-hw fs <<
283 <<
284 generated_configs += corenet64_smp_defconfig <<
285 corenet64_smp_defconfig: <<
286 $(call merge_into_defconfig,corenet_ba <<
287 85xx-64bit 85xx-smp altivec 85 <<
288 <<
289 generated_configs += mpc86xx_defconfig <<
290 mpc86xx_defconfig: <<
291 $(call merge_into_defconfig,mpc86xx_ba <<
292 86xx-hw fsl-emb-nonhw) <<
293 <<
294 generated_configs += mpc86xx_smp_defconfig <<
295 mpc86xx_smp_defconfig: <<
296 $(call merge_into_defconfig,mpc86xx_ba <<
297 86xx-smp 86xx-hw fsl-emb-nonhw <<
298 <<
299 generated_configs += ppc32_allmodconfig <<
300 ppc32_allmodconfig: <<
301 $(Q)$(MAKE) KCONFIG_ALLCONFIG=$(srctre <<
302 -f $(srctree)/Makefile allmodc <<
303 <<
304 generated_configs += ppc44x_allmodconfig <<
305 ppc44x_allmodconfig: <<
306 $(Q)$(MAKE) KCONFIG_ALLCONFIG=$(srctre <<
307 -f $(srctree)/Makefile allmodc <<
308 <<
309 generated_configs += ppc8xx_allmodconfig <<
310 ppc8xx_allmodconfig: <<
311 $(Q)$(MAKE) KCONFIG_ALLCONFIG=$(srctre <<
312 -f $(srctree)/Makefile allmodc <<
313 <<
314 generated_configs += ppc85xx_allmodconfig <<
315 ppc85xx_allmodconfig: <<
316 $(Q)$(MAKE) KCONFIG_ALLCONFIG=$(srctre <<
317 -f $(srctree)/Makefile allmodc <<
318 <<
319 generated_configs += ppc_defconfig <<
320 ppc_defconfig: <<
321 $(call merge_into_defconfig,book3s_32. <<
322 <<
323 generated_configs += ppc64le_allmodconfig <<
324 ppc64le_allmodconfig: <<
325 $(Q)$(MAKE) KCONFIG_ALLCONFIG=$(srctre <<
326 -f $(srctree)/Makefile allmodc <<
327 <<
328 generated_configs += ppc64le_allnoconfig <<
329 ppc64le_allnoconfig: <<
330 $(Q)$(MAKE) KCONFIG_ALLCONFIG=$(srctre <<
331 -f $(srctree)/Makefile allnoco <<
332 <<
333 generated_configs += ppc64_book3e_allmodconfig <<
334 ppc64_book3e_allmodconfig: <<
335 $(Q)$(MAKE) KCONFIG_ALLCONFIG=$(srctre <<
336 -f $(srctree)/Makefile allmodc <<
337 <<
338 generated_configs += ppc32_randconfig <<
339 ppc32_randconfig: <<
340 $(Q)$(MAKE) KCONFIG_ALLCONFIG=$(srctre <<
341 -f $(srctree)/Makefile randcon <<
342 <<
343 generated_configs += ppc64_randconfig <<
344 ppc64_randconfig: <<
345 $(Q)$(MAKE) KCONFIG_ALLCONFIG=$(srctre <<
346 -f $(srctree)/Makefile randcon <<
347 <<
348 PHONY += $(generated_configs) <<
349 438
350 define archhelp 439 define archhelp
351 echo '* zImage - Build default imag !! 440 echo ' install - install kernel into $(INSTALL_PATH)'
352 echo ' zImage.* - Compressed kernel !! 441 echo ' vmlinux.ecoff - ECOFF boot image'
353 echo ' uImage - U-Boot native imag !! 442 echo ' vmlinux.bin - Raw binary boot image'
354 echo ' cuImage.<dt> - Backwards compatib !! 443 echo ' vmlinux.srec - SREC boot image'
355 echo ' versions which do !! 444 echo ' vmlinux.32 - 64-bit boot image wrapped in 32bits (IP22/IP32)'
356 echo ' dtbImage.<dt> - zImage with an emb !! 445 echo ' vmlinuz - Compressed boot(zboot) image'
357 echo ' simpleImage.<dt> - Firmware independ !! 446 echo ' vmlinuz.ecoff - ECOFF zboot image'
358 echo ' treeImage.<dt> - Support for older !! 447 echo ' vmlinuz.bin - Raw binary zboot image'
359 echo ' install - Install kernel usi !! 448 echo ' vmlinuz.srec - SREC zboot image'
360 echo ' (your) ~/bin/$(INS !! 449 echo ' uImage - U-Boot image'
361 echo ' (distribution) /sb !! 450 echo ' uImage.bin - U-Boot image (uncompressed)'
362 echo ' install to $$(INST !! 451 echo ' uImage.bz2 - U-Boot image (bz2)'
363 echo ' *_defconfig - Select default con !! 452 echo ' uImage.gz - U-Boot image (gzip)'
364 echo '' !! 453 echo ' uImage.lzma - U-Boot image (lzma)'
365 echo ' Targets with <dt> embed a device tre !! 454 echo ' uImage.lzo - U-Boot image (lzo)'
366 echo ' These targets support board with fir !! 455 echo ' uzImage.bin - U-Boot image (self-extracting)'
367 echo ' support passing a device tree direct !! 456 echo ' dtbs - Device-tree blobs for enabled boards'
368 echo ' name of a dts file from the arch/pow !! 457 echo ' dtbs_install - Install dtbs to $(INSTALL_DTBS_PATH)'
369 echo ' (minus the .dts extension).' !! 458 echo
370 echo !! 459 echo ' These will be default as appropriate for a configured platform.'
371 $(foreach cfg,$(generated_configs), !! 460 echo
372 printf " %-27s - Build for %s\\n" $(cfg) !! 461 echo ' If you are targeting a system supported by generic kernels you may'
>> 462 echo ' configure the kernel for a given architecture target like so:'
>> 463 echo
>> 464 echo ' {micro32,32,64}{r1,r2,r6}{el,}_defconfig <BOARDS="list of boards">'
>> 465 echo
>> 466 echo ' Otherwise, the following default configurations are available:'
373 endef 467 endef
374 468
375 PHONY += install !! 469 generic_config_dir = $(srctree)/arch/$(ARCH)/configs/generic
376 install: !! 470 generic_defconfigs :=
377 $(call cmd,install) <<
378 471
379 ifeq ($(KBUILD_EXTMOD),) !! 472 #
380 # We need to generate vdso-offsets.h before co !! 473 # If the user generates a generic kernel configuration without specifying a
381 # In order to do that, we should use the archp !! 474 # list of boards to include the config fragments for, default to including all
382 # asm-offsets.h is included in some files used !! 475 # available board config fragments.
383 # asm-offsets.h is built in prepare0, for whic !! 476 #
384 # Therefore we need to generate the header aft !! 477 ifeq ($(BOARDS),)
385 # this hack. !! 478 BOARDS = $(patsubst board-%.config,%,$(notdir $(wildcard $(generic_config_dir)/board-*.config)))
386 prepare: vdso_prepare <<
387 vdso_prepare: prepare0 <<
388 $(if $(CONFIG_VDSO32),$(Q)$(MAKE) \ <<
389 $(build)=arch/powerpc/kernel/v <<
390 $(if $(CONFIG_PPC64),$(Q)$(MAKE) \ <<
391 $(build)=arch/powerpc/kernel/v <<
392 endif <<
393 <<
394 archprepare: checkbin <<
395 <<
396 archheaders: <<
397 $(Q)$(MAKE) $(build)=arch/powerpc/kern <<
398 <<
399 ifdef CONFIG_STACKPROTECTOR <<
400 prepare: stack_protector_prepare <<
401 <<
402 PHONY += stack_protector_prepare <<
403 stack_protector_prepare: prepare0 <<
404 ifdef CONFIG_PPC64 <<
405 $(eval KBUILD_CFLAGS += -mstack-protec <<
406 else <<
407 $(eval KBUILD_CFLAGS += -mstack-protec <<
408 endif <<
409 endif 479 endif
410 480
411 PHONY += checkbin !! 481 #
412 checkbin: !! 482 # Generic kernel configurations which merge generic_defconfig with the
413 @if test "x${CONFIG_FTRACE_MCOUNT_USE_ !! 483 # appropriate config fragments from arch/mips/configs/generic/, resulting in
414 "x${CONFIG_LD_IS_BFD}" = "xy" !! 484 # the ability to easily configure the kernel for a given architecture,
415 "${CONFIG_LD_VERSION}" = "2370 !! 485 # endianness & set of boards without duplicating the needed configuration in
416 echo -n '*** binutils 2.37 dro !! 486 # hundreds of defconfig files.
417 echo 'is unable to handle.' ; !! 487 #
418 echo '*** Please use a differe !! 488 define gen_generic_defconfigs
419 false ; \ !! 489 $(foreach bits,$(1),$(foreach rev,$(2),$(foreach endian,$(3),
420 fi !! 490 target := $(bits)$(rev)$(filter el,$(endian))_defconfig
>> 491 generic_defconfigs += $$(target)
>> 492 $$(target): $(generic_config_dir)/$(bits)$(rev).config
>> 493 $$(target): $(generic_config_dir)/$(endian).config
>> 494 )))
>> 495 endef
>> 496
>> 497 $(eval $(call gen_generic_defconfigs,32 64,r1 r2 r6,eb el))
>> 498 $(eval $(call gen_generic_defconfigs,micro32,r2,eb el))
>> 499
>> 500 .PHONY: $(generic_defconfigs)
>> 501 $(generic_defconfigs):
>> 502 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/kconfig/merge_config.sh \
>> 503 -m -O $(objtree) $(srctree)/arch/$(ARCH)/configs/generic_defconfig $^ \
>> 504 $(foreach board,$(BOARDS),$(generic_config_dir)/board-$(board).config)
>> 505 $(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig
>> 506
>> 507 #
>> 508 # Prevent generic merge_config rules attempting to merge single fragments
>> 509 #
>> 510 $(generic_config_dir)/%.config: ;
>> 511
>> 512 #
>> 513 # Legacy defconfig compatibility - these targets used to be real defconfigs but
>> 514 # now that the boards have been converted to use the generic kernel they are
>> 515 # wrappers around the generic rules above.
>> 516 #
>> 517 .PHONY: sead3_defconfig
>> 518 sead3_defconfig:
>> 519 $(Q)$(MAKE) -f $(srctree)/Makefile 32r2el_defconfig BOARDS=sead-3
>> 520
>> 521 .PHONY: sead3micro_defconfig
>> 522 sead3micro_defconfig:
>> 523 $(Q)$(MAKE) -f $(srctree)/Makefile micro32r2el_defconfig BOARDS=sead-3
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