1 # 1 #
2 # arch/arm/Makefile <<
3 # <<
4 # This file is included by the global makefile <<
5 # architecture-specific flags and dependencies <<
6 # <<
7 # This file is subject to the terms and condit 2 # This file is subject to the terms and conditions of the GNU General Public
8 # License. See the file "COPYING" in the main 3 # License. See the file "COPYING" in the main directory of this archive
9 # for more details. 4 # for more details.
10 # 5 #
11 # Copyright (C) 1995-2001 by Russell King !! 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.
>> 12 #
12 13
13 LDFLAGS_vmlinux := --no-undefined -X --pic-ven !! 14 archscripts: scripts_basic
14 ifeq ($(CONFIG_CPU_ENDIAN_BE8),y) !! 15 $(Q)$(MAKE) $(build)=arch/mips/tools elf-entry
15 LDFLAGS_vmlinux += --be8 !! 16 ifeq ($(CONFIG_CPU_LOONGSON3_WORKAROUNDS),y)
16 KBUILD_LDFLAGS_MODULE += --be8 !! 17 $(Q)$(MAKE) $(build)=arch/mips/tools loongson3-llsc-check
17 endif 18 endif
>> 19 $(Q)$(MAKE) $(build)=arch/mips/boot/tools relocs
18 20
19 GZFLAGS :=-9 !! 21 KBUILD_DEFCONFIG := 32r2el_defconfig
20 #KBUILD_CFLAGS +=-pipe !! 22 KBUILD_DTBS := dtbs
21 <<
22 # Never generate .eh_frame <<
23 KBUILD_CFLAGS += $(call cc-option,-fno-dwarf <<
24 <<
25 # Disable FDPIC ABI <<
26 KBUILD_CFLAGS += $(call cc-option,-mno-fdpic <<
27 <<
28 # This should work on most of the modern platf <<
29 KBUILD_DEFCONFIG := multi_v7_defconfig <<
30 23
31 # defines filename extension depending memory !! 24 #
32 ifeq ($(CONFIG_MMU),) !! 25 # Select the object file format to substitute into the linker script.
33 MMUEXT := -nommu !! 26 #
34 KBUILD_CFLAGS += $(call cc-option,-mno-unali !! 27 ifdef CONFIG_CPU_LITTLE_ENDIAN
>> 28 32bit-tool-archpref = mipsel
>> 29 64bit-tool-archpref = mips64el
>> 30 32bit-bfd = elf32-tradlittlemips
>> 31 64bit-bfd = elf64-tradlittlemips
>> 32 32bit-emul = elf32ltsmip
>> 33 64bit-emul = elf64ltsmip
>> 34 else
>> 35 32bit-tool-archpref = mips
>> 36 64bit-tool-archpref = mips64
>> 37 32bit-bfd = elf32-tradbigmips
>> 38 64bit-bfd = elf64-tradbigmips
>> 39 32bit-emul = elf32btsmip
>> 40 64bit-emul = elf64btsmip
35 endif 41 endif
36 42
37 ifeq ($(CONFIG_FRAME_POINTER),y) !! 43 ifdef CONFIG_32BIT
38 KBUILD_CFLAGS +=-fno-omit-frame-pointer !! 44 tool-archpref = $(32bit-tool-archpref)
39 ifeq ($(CONFIG_CC_IS_GCC),y) !! 45 UTS_MACHINE := mips
40 KBUILD_CFLAGS += -mapcs -mno-sched-prolog <<
41 endif 46 endif
>> 47 ifdef CONFIG_64BIT
>> 48 tool-archpref = $(64bit-tool-archpref)
>> 49 UTS_MACHINE := mips64
42 endif 50 endif
43 51
44 ifeq ($(CONFIG_CPU_BIG_ENDIAN),y) !! 52 ifdef cross_compiling
45 KBUILD_CPPFLAGS += -mbig-endian !! 53 ifeq ($(CROSS_COMPILE),)
46 CHECKFLAGS += -D__ARMEB__ !! 54 CROSS_COMPILE := $(call cc-cross-prefix, $(tool-archpref)-linux- $(tool-archpref)-linux-gnu- $(tool-archpref)-unknown-linux-gnu-)
47 KBUILD_LDFLAGS += -EB !! 55 endif
48 else !! 56 endif
49 KBUILD_CPPFLAGS += -mlittle-endian <<
50 CHECKFLAGS += -D__ARMEL__ <<
51 KBUILD_LDFLAGS += -EL <<
52 endif <<
53 <<
54 # <<
55 # The Scalar Replacement of Aggregates (SRA) o <<
56 # later may result in code being generated tha <<
57 # char struct members incorrectly. So disable <<
58 # (https://gcc.gnu.org/bugzilla/show_bug.cgi?i <<
59 # <<
60 KBUILD_CFLAGS += $(call cc-option,-fno-ipa-s <<
61 <<
62 # This selects which instruction set is used. <<
63 arch-$(CONFIG_CPU_32v7M) :=-march=armv7 <<
64 arch-$(CONFIG_CPU_32v7) :=-march=armv7 <<
65 arch-$(CONFIG_CPU_32v6) :=-march=armv6 <<
66 # Only override the compiler option if ARMv6. <<
67 # always available in ARMv7 <<
68 ifeq ($(CONFIG_CPU_32v6),y) <<
69 arch-$(CONFIG_CPU_32v6K) :=-march=armv6 <<
70 endif <<
71 arch-$(CONFIG_CPU_32v5) :=-march=armv5 <<
72 arch-$(CONFIG_CPU_32v4T) :=-march=armv4 <<
73 arch-$(CONFIG_CPU_32v4) :=-march=armv4 <<
74 arch-$(CONFIG_CPU_32v3) :=-march=armv3 <<
75 <<
76 # Note that GCC does not numerically define an <<
77 # macro, but instead defines a whole series of <<
78 # testing for a specific architecture or later <<
79 cpp-$(CONFIG_CPU_32v7M) :=-D__LINUX_AR <<
80 cpp-$(CONFIG_CPU_32v7) :=-D__LINUX_AR <<
81 cpp-$(CONFIG_CPU_32v6) :=-D__LINUX_AR <<
82 # Only override the compiler option if ARMv6. <<
83 # always available in ARMv7 <<
84 ifeq ($(CONFIG_CPU_32v6),y) <<
85 cpp-$(CONFIG_CPU_32v6K) :=-D__LINUX_AR <<
86 endif <<
87 cpp-$(CONFIG_CPU_32v5) :=-D__LINUX_AR <<
88 cpp-$(CONFIG_CPU_32v4T) :=-D__LINUX_AR <<
89 cpp-$(CONFIG_CPU_32v4) :=-D__LINUX_AR <<
90 cpp-$(CONFIG_CPU_32v3) :=-D__LINUX_AR <<
91 <<
92 # This selects how we optimise for the process <<
93 tune-$(CONFIG_CPU_ARM7TDMI) :=-mtune=arm7t <<
94 tune-$(CONFIG_CPU_ARM720T) :=-mtune=arm7t <<
95 tune-$(CONFIG_CPU_ARM740T) :=-mtune=arm7t <<
96 tune-$(CONFIG_CPU_ARM9TDMI) :=-mtune=arm9t <<
97 tune-$(CONFIG_CPU_ARM940T) :=-mtune=arm9t <<
98 tune-$(CONFIG_CPU_ARM946E) :=-mtune=arm9e <<
99 tune-$(CONFIG_CPU_ARM920T) :=-mtune=arm9t <<
100 tune-$(CONFIG_CPU_ARM922T) :=-mtune=arm9t <<
101 tune-$(CONFIG_CPU_ARM925T) :=-mtune=arm9t <<
102 tune-$(CONFIG_CPU_ARM926T) :=-mtune=arm9t <<
103 tune-$(CONFIG_CPU_FA526) :=-mtune=arm9t <<
104 tune-$(CONFIG_CPU_SA110) :=-mtune=stron <<
105 tune-$(CONFIG_CPU_SA1100) :=-mtune=stron <<
106 tune-$(CONFIG_CPU_XSCALE) :=-mtune=xscal <<
107 tune-$(CONFIG_CPU_XSC3) :=-mtune=xscal <<
108 tune-$(CONFIG_CPU_FEROCEON) :=-mtune=xscal <<
109 tune-$(CONFIG_CPU_V6) :=-mtune=arm11 <<
110 tune-$(CONFIG_CPU_V6K) :=-mtune=arm11 <<
111 57
112 ifeq ($(CONFIG_AEABI),y) !! 58 ifdef CONFIG_FUNCTION_GRAPH_TRACER
113 CFLAGS_ABI :=-mabi=aapcs-linux -mfpu=vfp !! 59 ifndef KBUILD_MCOUNT_RA_ADDRESS
114 else !! 60 ifeq ($(call cc-option-yn,-mmcount-ra-address), y)
115 CFLAGS_ABI :=$(call cc-option,-mapcs-32,- !! 61 cflags-y += -mmcount-ra-address -DKBUILD_MCOUNT_RA_ADDRESS
>> 62 endif
>> 63 endif
116 endif 64 endif
>> 65 cflags-y += $(call cc-option, -mno-check-zero-division)
117 66
118 ifeq ($(CONFIG_ARM_UNWIND),y) !! 67 ifdef CONFIG_32BIT
119 CFLAGS_ABI +=-funwind-tables !! 68 ld-emul = $(32bit-emul)
>> 69 vmlinux-32 = vmlinux
>> 70 vmlinux-64 = vmlinux.64
>> 71
>> 72 cflags-y += -mabi=32
120 endif 73 endif
121 74
122 ifeq ($(CONFIG_CC_IS_CLANG),y) !! 75 ifdef CONFIG_64BIT
123 CFLAGS_ABI += -meabi gnu !! 76 ld-emul = $(64bit-emul)
>> 77 vmlinux-32 = vmlinux.32
>> 78 vmlinux-64 = vmlinux
>> 79
>> 80 cflags-y += -mabi=64
124 endif 81 endif
125 82
126 ifeq ($(CONFIG_CURRENT_POINTER_IN_TPIDRURO),y) !! 83 all-$(CONFIG_BOOT_ELF32) := $(vmlinux-32)
127 KBUILD_CFLAGS += -mtp=cp15 !! 84 all-$(CONFIG_BOOT_ELF64) := $(vmlinux-64)
>> 85 all-$(CONFIG_SYS_SUPPORTS_ZBOOT)+= vmlinuz
>> 86
>> 87 #
>> 88 # GCC uses -G 0 -mabicalls -fpic as default. We don't want PIC in the kernel
>> 89 # code since it only slows down the whole thing. At some point we might make
>> 90 # use of global pointer optimizations but their use of $28 conflicts with
>> 91 # the current pointer optimization.
>> 92 #
>> 93 # The DECStation requires an ECOFF kernel for remote booting, other MIPS
>> 94 # machines may also. Since BFD is incredibly buggy with respect to
>> 95 # crossformat linking we rely on the elf2ecoff tool for format conversion.
>> 96 #
>> 97 cflags-y += -G 0 -mno-abicalls -fno-pic -pipe
>> 98 cflags-y += -msoft-float -Wa,-msoft-float
>> 99 LDFLAGS_vmlinux += -G 0 -static -n -nostdlib
>> 100 KBUILD_AFLAGS_MODULE += -mlong-calls
>> 101 KBUILD_CFLAGS_MODULE += -mlong-calls
>> 102
>> 103 ifeq ($(CONFIG_RELOCATABLE),y)
>> 104 LDFLAGS_vmlinux += --emit-relocs
>> 105 endif
>> 106
>> 107 cflags-y += -ffreestanding
>> 108
>> 109 cflags-$(CONFIG_CPU_BIG_ENDIAN) += -EB
>> 110 cflags-$(CONFIG_CPU_LITTLE_ENDIAN) += -EL
>> 111
>> 112 cflags-$(CONFIG_SB1XXX_CORELIS) += $(call cc-option,-mno-sched-prolog) \
>> 113 -fno-omit-frame-pointer
>> 114
>> 115 # Some distribution-specific toolchains might pass the -fstack-check
>> 116 # option during the build, which adds a simple stack-probe at the beginning
>> 117 # of every function. This stack probe is to ensure that there is enough
>> 118 # stack space, else a SEGV is generated. This is not desirable for MIPS
>> 119 # as kernel stacks are small, placed in unmapped virtual memory, and do not
>> 120 # grow when overflowed. Especially on SGI IP27 platforms, this check will
>> 121 # lead to a NULL pointer dereference in _raw_spin_lock_irq.
>> 122 #
>> 123 # In disassembly, this stack probe appears at the top of a function as:
>> 124 # sd zero,<offset>(sp)
>> 125 # Where <offset> is a negative value.
>> 126 #
>> 127 cflags-y += -fno-stack-check
>> 128
>> 129 # binutils from v2.35 when built with --enable-mips-fix-loongson3-llsc=yes,
>> 130 # supports an -mfix-loongson3-llsc flag which emits a sync prior to each ll
>> 131 # instruction to work around a CPU bug (see __SYNC_loongson3_war in asm/sync.h
>> 132 # for a description).
>> 133 #
>> 134 # We disable this in order to prevent the assembler meddling with the
>> 135 # instruction that labels refer to, ie. if we label an ll instruction:
>> 136 #
>> 137 # 1: ll v0, 0(a0)
>> 138 #
>> 139 # ...then with the assembler fix applied the label may actually point at a sync
>> 140 # instruction inserted by the assembler, and if we were using the label in an
>> 141 # exception table the table would no longer contain the address of the ll
>> 142 # instruction.
>> 143 #
>> 144 # Avoid this by explicitly disabling that assembler behaviour.
>> 145 #
>> 146 cflags-y += $(call cc-option,-Wa$(comma)-mno-fix-loongson3-llsc,)
>> 147
>> 148 #
>> 149 # CPU-dependent compiler/assembler options for optimization.
>> 150 #
>> 151 cflags-$(CONFIG_CPU_R3000) += $(call cc-option,-march=r3000,-march=mips1)
>> 152 cflags-$(CONFIG_CPU_R4300) += $(call cc-option,-march=r4300,-march=mips3) -Wa,--trap
>> 153 cflags-$(CONFIG_CPU_R4X00) += $(call cc-option,-march=r4600,-march=mips3) -Wa,--trap
>> 154 cflags-$(CONFIG_CPU_TX49XX) += $(call cc-option,-march=r4600,-march=mips3) -Wa,--trap
>> 155 cflags-$(CONFIG_CPU_MIPS32_R1) += -march=mips32 -Wa,--trap
>> 156 cflags-$(CONFIG_CPU_MIPS32_R2) += -march=mips32r2 -Wa,--trap
>> 157 cflags-$(CONFIG_CPU_MIPS32_R5) += -march=mips32r5 -Wa,--trap -modd-spreg
>> 158 cflags-$(CONFIG_CPU_MIPS32_R6) += -march=mips32r6 -Wa,--trap -modd-spreg
>> 159 cflags-$(CONFIG_CPU_MIPS64_R1) += -march=mips64 -Wa,--trap
>> 160 cflags-$(CONFIG_CPU_MIPS64_R2) += -march=mips64r2 -Wa,--trap
>> 161 cflags-$(CONFIG_CPU_MIPS64_R5) += -march=mips64r5 -Wa,--trap
>> 162 cflags-$(CONFIG_CPU_MIPS64_R6) += -march=mips64r6 -Wa,--trap
>> 163 cflags-$(CONFIG_CPU_P5600) += $(call cc-option,-march=p5600,-march=mips32r5) \
>> 164 -Wa,--trap -modd-spreg
>> 165 cflags-$(CONFIG_CPU_R5000) += $(call cc-option,-march=r5000,-march=mips4) \
>> 166 -Wa,--trap
>> 167 cflags-$(CONFIG_CPU_R5500) += $(call cc-option,-march=r5500,-march=mips4) \
>> 168 -Wa,--trap
>> 169 cflags-$(CONFIG_CPU_NEVADA) += $(call cc-option,-march=rm5200,-march=mips4) \
>> 170 -Wa,--trap
>> 171 cflags-$(CONFIG_CPU_RM7000) += $(call cc-option,-march=rm7000,-march=mips4) \
>> 172 -Wa,--trap
>> 173 cflags-$(CONFIG_CPU_SB1) += $(call cc-option,-march=sb1,-march=mips64) \
>> 174 -Wa,--trap
>> 175 cflags-$(CONFIG_CPU_SB1) += $(call cc-option,-mno-mdmx)
>> 176 cflags-$(CONFIG_CPU_SB1) += $(call cc-option,-mno-mips3d)
>> 177 cflags-$(CONFIG_CPU_R10000) += $(call cc-option,-march=r10000,-march=mips4) \
>> 178 -Wa,--trap
>> 179 cflags-$(CONFIG_CPU_CAVIUM_OCTEON) += -march=octeon -Wa,--trap
>> 180 cflags-$(CONFIG_CAVIUM_CN63XXP1) += -Wa,-mfix-cn63xxp1
>> 181 cflags-$(CONFIG_CPU_BMIPS) += -march=mips32 -Wa,--trap
>> 182
>> 183 cflags-$(CONFIG_CPU_LOONGSON2E) += \
>> 184 $(call cc-option,-march=loongson2e,-march=mips3) -Wa,--trap
>> 185 cflags-$(CONFIG_CPU_LOONGSON2F) += \
>> 186 $(call cc-option,-march=loongson2f,-march=mips3) -Wa,--trap
>> 187 # Some -march= flags enable MMI instructions, and GCC complains about that
>> 188 # support being enabled alongside -msoft-float. Thus explicitly disable MMI.
>> 189 cflags-$(CONFIG_CPU_LOONGSON2EF) += $(call cc-option,-mno-loongson-mmi)
>> 190 cflags-$(CONFIG_CPU_LOONGSON64) += \
>> 191 $(call cc-option,-march=loongson3a,-march=mips64r2) -Wa,--trap
>> 192 cflags-$(CONFIG_CPU_LOONGSON64) += $(call cc-option,-mno-loongson-mmi)
>> 193
>> 194 cflags-$(CONFIG_CPU_R4000_WORKAROUNDS) += $(call cc-option,-mfix-r4000,)
>> 195 cflags-$(CONFIG_CPU_R4400_WORKAROUNDS) += $(call cc-option,-mfix-r4400,)
>> 196 cflags-$(CONFIG_CPU_DADDI_WORKAROUNDS) += $(call cc-option,-mno-daddi,)
>> 197 ifdef CONFIG_CPU_LOONGSON2F_WORKAROUNDS
>> 198 cflags-$(CONFIG_CPU_NOP_WORKAROUNDS) += -Wa,-mfix-loongson2f-nop
>> 199 cflags-$(CONFIG_CPU_JUMP_WORKAROUNDS) += -Wa,-mfix-loongson2f-jump
128 endif 200 endif
129 201
130 # Accept old syntax despite ".syntax unified" !! 202 #
131 AFLAGS_NOWARN :=$(call as-option,-Wa$(comma) !! 203 # Some versions of binutils, not currently mainline as of 2019/02/04, support
>> 204 # an -mfix-loongson3-llsc flag which emits a sync prior to each ll instruction
>> 205 # to work around a CPU bug (see __SYNC_loongson3_war in asm/sync.h for a
>> 206 # description).
>> 207 #
>> 208 # We disable this in order to prevent the assembler meddling with the
>> 209 # instruction that labels refer to, ie. if we label an ll instruction:
>> 210 #
>> 211 # 1: ll v0, 0(a0)
>> 212 #
>> 213 # ...then with the assembler fix applied the label may actually point at a sync
>> 214 # instruction inserted by the assembler, and if we were using the label in an
>> 215 # exception table the table would no longer contain the address of the ll
>> 216 # instruction.
>> 217 #
>> 218 # Avoid this by explicitly disabling that assembler behaviour. If upstream
>> 219 # binutils does not merge support for the flag then we can revisit & remove
>> 220 # this later - for now it ensures vendor toolchains don't cause problems.
>> 221 #
>> 222 cflags-$(CONFIG_CPU_LOONGSON64) += $(call as-option,-Wa$(comma)-mno-fix-loongson3-llsc,)
>> 223
>> 224 # For smartmips configurations, there are hundreds of warnings due to ISA overrides
>> 225 # in assembly and header files. smartmips is only supported for MIPS32r1 onwards
>> 226 # and there is no support for 64-bit. Various '.set mips2' or '.set mips3' or
>> 227 # similar directives in the kernel will spam the build logs with the following warnings:
>> 228 # Warning: the `smartmips' extension requires MIPS32 revision 1 or greater
>> 229 # or
>> 230 # Warning: the 64-bit MIPS architecture does not support the `smartmips' extension
>> 231 # Pass -Wa,--no-warn to disable all assembler warnings until the kernel code has
>> 232 # been fixed properly.
>> 233 mips-cflags := $(cflags-y)
>> 234 ifeq ($(CONFIG_CPU_HAS_SMARTMIPS),y)
>> 235 smartmips-ase := $(call cc-option-yn,$(mips-cflags) -msmartmips)
>> 236 cflags-$(smartmips-ase) += -msmartmips -Wa,--no-warn
>> 237 endif
>> 238 ifeq ($(CONFIG_CPU_MICROMIPS),y)
>> 239 micromips-ase := $(call cc-option-yn,$(mips-cflags) -mmicromips)
>> 240 cflags-$(micromips-ase) += -mmicromips
>> 241 endif
>> 242 ifeq ($(CONFIG_CPU_HAS_MSA),y)
>> 243 toolchain-msa := $(call cc-option-yn,$(mips-cflags) -mhard-float -mfp64 -Wa$(comma)-mmsa)
>> 244 cflags-$(toolchain-msa) += -DTOOLCHAIN_SUPPORTS_MSA
>> 245 endif
>> 246 toolchain-virt := $(call cc-option-yn,$(mips-cflags) -mvirt)
>> 247 cflags-$(toolchain-virt) += -DTOOLCHAIN_SUPPORTS_VIRT
>> 248 # For -mmicromips, use -Wa,-fatal-warnings to catch unsupported -mxpa which
>> 249 # only warns
>> 250 xpa-cflags-y := $(mips-cflags)
>> 251 xpa-cflags-$(micromips-ase) += -mmicromips -Wa$(comma)-fatal-warnings
>> 252 toolchain-xpa := $(call cc-option-yn,$(xpa-cflags-y) -mxpa)
>> 253 cflags-$(toolchain-xpa) += -DTOOLCHAIN_SUPPORTS_XPA
>> 254 toolchain-crc := $(call cc-option-yn,$(mips-cflags) -Wa$(comma)-mcrc)
>> 255 cflags-$(toolchain-crc) += -DTOOLCHAIN_SUPPORTS_CRC
>> 256 toolchain-dsp := $(call cc-option-yn,$(mips-cflags) -Wa$(comma)-mdsp)
>> 257 cflags-$(toolchain-dsp) += -DTOOLCHAIN_SUPPORTS_DSP
>> 258 toolchain-ginv := $(call cc-option-yn,$(mips-cflags) -Wa$(comma)-mginv)
>> 259 cflags-$(toolchain-ginv) += -DTOOLCHAIN_SUPPORTS_GINV
132 260
133 # The GCC option -ffreestanding is required in !! 261 #
134 # ARM/NEON intrinsics in a non C99-compliant e !! 262 # Firmware support
135 CC_FLAGS_FPU := -ffreestanding !! 263 #
136 # Enable <arm_neon.h> !! 264 libs-$(CONFIG_FW_ARC) += arch/mips/fw/arc/
137 CC_FLAGS_FPU += -isystem $(shell $(CC) -pri !! 265 libs-$(CONFIG_FW_CFE) += arch/mips/fw/cfe/
138 CC_FLAGS_FPU += -march=armv7-a -mfloat-abi= !! 266 libs-$(CONFIG_FW_SNIPROM) += arch/mips/fw/sni/
>> 267 libs-y += arch/mips/fw/lib/
139 268
140 ifeq ($(CONFIG_THUMB2_KERNEL),y) !! 269 #
141 CFLAGS_ISA :=-Wa,-mimplicit-it=always $(A !! 270 # Kernel compression
142 AFLAGS_ISA :=$(CFLAGS_ISA) -Wa$(comma)-mt !! 271 #
143 CFLAGS_ISA +=-mthumb !! 272 ifdef CONFIG_SYS_SUPPORTS_ZBOOT
>> 273 COMPRESSION_FNAME = vmlinuz
144 else 274 else
145 CFLAGS_ISA :=$(call cc-option,-marm,) $(A !! 275 COMPRESSION_FNAME = vmlinux
146 AFLAGS_ISA :=$(CFLAGS_ISA) <<
147 endif 276 endif
148 277
149 # Need -Uarm for gcc < 3.x !! 278 #
150 KBUILD_CPPFLAGS +=$(cpp-y) !! 279 # Board-dependent options and extra files
151 KBUILD_CFLAGS +=$(CFLAGS_ABI) $(CFLAGS_ISA) !! 280 #
152 KBUILD_AFLAGS +=$(CFLAGS_ABI) $(AFLAGS_ISA) !! 281 include $(srctree)/arch/mips/Kbuild.platforms
153 !! 282
154 CHECKFLAGS += -D__arm__ !! 283 ifdef CONFIG_PHYSICAL_START
155 !! 284 load-y = $(CONFIG_PHYSICAL_START)
156 # Text offset. This list is sorted numerically <<
157 # provide a means to avoid/resolve conflicts i <<
158 # Note: the 32kB below this value is reserved <<
159 # during boot, and this offset is critical to <<
160 # kexec-tools. <<
161 textofs-y := 0x00008000 <<
162 # RTD1195 has Boot ROM at start of address spa <<
163 textofs-$(CONFIG_ARCH_REALTEK) := 0x00108000 <<
164 # SA1111 DMA bug: we don't want the kernel to <<
165 ifeq ($(CONFIG_ARCH_SA1100),y) <<
166 textofs-$(CONFIG_SA1111) := 0x00208000 <<
167 endif <<
168 textofs-$(CONFIG_ARCH_QCOM_RESERVE_SMEM) := 0x <<
169 textofs-$(CONFIG_ARCH_MESON) := 0x00208000 <<
170 textofs-$(CONFIG_ARCH_AXXIA) := 0x00308000 <<
171 <<
172 # Machine directory name. This list is sorted <<
173 # by CONFIG_* macro name. <<
174 machine-$(CONFIG_ARCH_ACTIONS) += act <<
175 machine-$(CONFIG_ARCH_ALPINE) += alp <<
176 machine-$(CONFIG_ARCH_ARTPEC) += art <<
177 machine-$(CONFIG_ARCH_ASPEED) += asp <<
178 machine-$(CONFIG_ARCH_AT91) += at9 <<
179 machine-$(CONFIG_ARCH_AXXIA) += axx <<
180 machine-$(CONFIG_ARCH_BCM) += bcm <<
181 machine-$(CONFIG_ARCH_BERLIN) += ber <<
182 machine-$(CONFIG_ARCH_CLPS711X) += clp <<
183 machine-$(CONFIG_ARCH_DAVINCI) += dav <<
184 machine-$(CONFIG_ARCH_DIGICOLOR) += dig <<
185 machine-$(CONFIG_ARCH_DOVE) += dov <<
186 machine-$(CONFIG_ARCH_EXYNOS) += exy <<
187 machine-$(CONFIG_ARCH_FOOTBRIDGE) += foo <<
188 machine-$(CONFIG_ARCH_GEMINI) += gem <<
189 machine-$(CONFIG_ARCH_HIGHBANK) += hig <<
190 machine-$(CONFIG_ARCH_HISI) += his <<
191 machine-$(CONFIG_ARCH_HPE) += hpe <<
192 machine-$(CONFIG_ARCH_IXP4XX) += ixp <<
193 machine-$(CONFIG_ARCH_KEYSTONE) += key <<
194 machine-$(CONFIG_ARCH_LPC18XX) += lpc <<
195 machine-$(CONFIG_ARCH_LPC32XX) += lpc <<
196 machine-$(CONFIG_ARCH_MESON) += mes <<
197 machine-$(CONFIG_ARCH_MMP) += mmp <<
198 machine-$(CONFIG_ARCH_MV78XX0) += mv7 <<
199 machine-$(CONFIG_ARCH_MVEBU) += mve <<
200 machine-$(CONFIG_ARCH_MXC) += imx <<
201 machine-$(CONFIG_ARCH_MEDIATEK) += med <<
202 machine-$(CONFIG_ARCH_MILBEAUT) += mil <<
203 machine-$(CONFIG_ARCH_MXS) += mxs <<
204 machine-$(CONFIG_ARCH_MSTARV7) += mst <<
205 machine-$(CONFIG_ARCH_NOMADIK) += nom <<
206 machine-$(CONFIG_ARCH_NPCM) += npc <<
207 machine-$(CONFIG_ARCH_OMAP1) += oma <<
208 machine-$(CONFIG_ARCH_OMAP2PLUS) += oma <<
209 machine-$(CONFIG_ARCH_ORION5X) += ori <<
210 machine-$(CONFIG_ARCH_PXA) += pxa <<
211 machine-$(CONFIG_ARCH_QCOM) += qco <<
212 machine-$(CONFIG_ARCH_REALTEK) += rea <<
213 machine-$(CONFIG_ARCH_ROCKCHIP) += roc <<
214 machine-$(CONFIG_ARCH_RPC) += rpc <<
215 machine-$(CONFIG_PLAT_SAMSUNG) += s3c <<
216 machine-$(CONFIG_ARCH_S5PV210) += s5p <<
217 machine-$(CONFIG_ARCH_SA1100) += sa1 <<
218 machine-$(CONFIG_ARCH_RENESAS) += shm <<
219 machine-$(CONFIG_ARCH_INTEL_SOCFPGA) += soc <<
220 machine-$(CONFIG_ARCH_STI) += sti <<
221 machine-$(CONFIG_ARCH_STM32) += stm <<
222 machine-$(CONFIG_ARCH_SUNXI) += sun <<
223 machine-$(CONFIG_ARCH_TEGRA) += teg <<
224 machine-$(CONFIG_ARCH_U8500) += ux5 <<
225 machine-$(CONFIG_ARCH_VT8500) += vt8 <<
226 machine-$(CONFIG_ARCH_ZYNQ) += zyn <<
227 machine-$(CONFIG_PLAT_VERSATILE) += ver <<
228 machine-$(CONFIG_PLAT_SPEAR) += spe <<
229 <<
230 # legacy platforms provide their own mach/*.h <<
231 # these three are mutually exclusive <<
232 machdirs-$(CONFIG_ARCH_FOOTBRIDGE) += arc <<
233 machdirs-$(CONFIG_ARCH_RPC) += arc <<
234 machdirs-$(CONFIG_ARCH_SA1100) += arc <<
235 KBUILD_CPPFLAGS += $(patsubst %,-I$(srctree)/% <<
236 <<
237 # The byte offset of the kernel image in RAM f <<
238 TEXT_OFFSET := $(textofs-y) <<
239 <<
240 export TEXT_OFFSET GZFLAGS MMUEXT <<
241 <<
242 # If we have a machine-specific directory, the <<
243 core-y += $(patsubst <<
244 # For cleaning <<
245 core- += $(patsubst <<
246 <<
247 core-$(CONFIG_PLAT_ORION) += arch/arm/pl <<
248 <<
249 libs-y := arch/arm/li <<
250 <<
251 # Default target when executing plain make <<
252 boot := arch/arm/boot <<
253 ifeq ($(CONFIG_XIP_KERNEL),y) <<
254 KBUILD_IMAGE := $(boot)/xipImage <<
255 else <<
256 KBUILD_IMAGE := $(boot)/zImage <<
257 endif 285 endif
258 286
259 ifeq ($(CONFIG_STACKPROTECTOR_PER_TASK),y) !! 287 entry-y = $(shell $(objtree)/arch/mips/tools/elf-entry vmlinux)
260 prepare: stack_protector_prepare !! 288 cflags-y += -I$(srctree)/arch/mips/include/asm/mach-generic
261 ifeq ($(CONFIG_CC_HAVE_STACKPROTECTOR_TLS),y) !! 289 drivers-$(CONFIG_PCI) += arch/mips/pci/
262 stack_protector_prepare: prepare0 !! 290
263 $(eval KBUILD_CFLAGS += \ !! 291 #
264 -mstack-protector-guard=tls \ !! 292 # Automatically detect the build format. By default we choose
265 -mstack-protector-guard-offset !! 293 # the elf format according to the load address.
266 awk '{if ($$2 == "TSK_ !! 294 # We can always force a build with a 64-bits symbol format by
267 include/genera !! 295 # passing 'KBUILD_SYM32=no' option to the make's command line.
>> 296 #
>> 297 ifdef CONFIG_64BIT
>> 298 ifndef KBUILD_SYM32
>> 299 ifeq ($(shell expr $(load-y) \< 0xffffffff80000000), 0)
>> 300 KBUILD_SYM32 = $(call cc-option-yn, -msym32)
>> 301 endif
>> 302 endif
>> 303
>> 304 ifeq ($(KBUILD_SYM32), y)
>> 305 cflags-$(KBUILD_SYM32) += -msym32 -DKBUILD_64BIT_SYM32
>> 306 else
>> 307 ifeq ($(CONFIG_CPU_DADDI_WORKAROUNDS), y)
>> 308 $(error CONFIG_CPU_DADDI_WORKAROUNDS unsupported without -msym32)
>> 309 endif
>> 310 endif
>> 311 endif
>> 312
>> 313 # When linking a 32-bit executable the LLVM linker cannot cope with a
>> 314 # 32-bit load address that has been sign-extended to 64 bits. Simply
>> 315 # remove the upper 32 bits then, as it is safe to do so with other
>> 316 # linkers.
>> 317 ifdef CONFIG_64BIT
>> 318 load-ld = $(load-y)
268 else 319 else
269 stack_protector_prepare: prepare0 !! 320 load-ld = $(subst 0xffffffff,0x,$(load-y))
270 $(eval SSP_PLUGIN_CFLAGS := \ <<
271 -fplugin-arg-arm_ssp_per_task_ <<
272 awk '{if ($$2 == "TSK_ <<
273 include/genera <<
274 $(eval KBUILD_CFLAGS += $(SSP_PLUGIN_C <<
275 $(eval GCC_PLUGINS_CFLAGS += $(SSP_PLU <<
276 endif 321 endif
>> 322
>> 323 KBUILD_AFLAGS += $(cflags-y)
>> 324 KBUILD_CFLAGS += $(cflags-y)
>> 325 KBUILD_CPPFLAGS += -DVMLINUX_LOAD_ADDRESS=$(load-y) -DLINKER_LOAD_ADDRESS=$(load-ld)
>> 326 KBUILD_CPPFLAGS += -DDATAOFFSET=$(if $(dataoffset-y),$(dataoffset-y),0)
>> 327
>> 328 bootvars-y = VMLINUX_LOAD_ADDRESS=$(load-y) \
>> 329 LINKER_LOAD_ADDRESS=$(load-ld) \
>> 330 VMLINUX_ENTRY_ADDRESS=$(entry-y) \
>> 331 PLATFORM="$(platform-y)" \
>> 332 ITS_INPUTS="$(its-y)"
>> 333 ifdef CONFIG_32BIT
>> 334 bootvars-y += ADDR_BITS=32
>> 335 endif
>> 336 ifdef CONFIG_64BIT
>> 337 bootvars-y += ADDR_BITS=64
>> 338 endif
>> 339
>> 340 # This is required to get dwarf unwinding tables into .debug_frame
>> 341 # instead of .eh_frame so we don't discard them.
>> 342 KBUILD_CFLAGS += -fno-asynchronous-unwind-tables
>> 343
>> 344 KBUILD_LDFLAGS += -m $(ld-emul)
>> 345
>> 346 ifdef need-compiler
>> 347 CHECKFLAGS += $(shell $(CC) $(KBUILD_CPPFLAGS) $(KBUILD_CFLAGS) -dM -E -x c /dev/null | \
>> 348 grep -E -vw '__GNUC_(MINOR_|PATCHLEVEL_)?_' | \
>> 349 sed -e "s/^\#define /-D'/" -e "s/ /'='/" -e "s/$$/'/" -e 's/\$$/&&/g')
>> 350 endif
>> 351
>> 352 OBJCOPYFLAGS += --remove-section=.reginfo
>> 353
>> 354 libs-y += arch/mips/lib/
>> 355 libs-$(CONFIG_MIPS_FP_SUPPORT) += arch/mips/math-emu/
>> 356
>> 357 drivers-y += arch/mips/crypto/
>> 358
>> 359 # suspend and hibernation support
>> 360 drivers-$(CONFIG_PM) += arch/mips/power/
>> 361
>> 362 # boot image targets (arch/mips/boot/)
>> 363 boot-y := vmlinux.bin
>> 364 boot-y += vmlinux.ecoff
>> 365 boot-y += vmlinux.srec
>> 366 boot-y += uImage
>> 367 boot-y += uImage.bin
>> 368 boot-y += uImage.bz2
>> 369 boot-y += uImage.gz
>> 370 boot-y += uImage.lzma
>> 371 boot-y += uImage.lzo
>> 372 boot-y += vmlinux.itb
>> 373 boot-y += vmlinux.gz.itb
>> 374 boot-y += vmlinux.bz2.itb
>> 375 boot-y += vmlinux.lzma.itb
>> 376 boot-y += vmlinux.lzo.itb
>> 377
>> 378 # compressed boot image targets (arch/mips/boot/compressed/)
>> 379 bootz-y := vmlinuz
>> 380 bootz-y += vmlinuz.bin
>> 381 bootz-y += vmlinuz.ecoff
>> 382 bootz-y += vmlinuz.srec
>> 383 bootz-y += uzImage.bin
>> 384 bootz-y += vmlinuz.itb
>> 385
>> 386 #
>> 387 # Some machines like the Indy need 32-bit ELF binaries for booting purposes.
>> 388 # Other need ECOFF, so we build a 32-bit ELF binary for them which we then
>> 389 # convert to ECOFF using elf2ecoff.
>> 390 #
>> 391 quiet_cmd_32 = OBJCOPY $@
>> 392 cmd_32 = $(OBJCOPY) -O $(32bit-bfd) $(OBJCOPYFLAGS) $< $@
>> 393 vmlinux.32: vmlinux
>> 394 $(call cmd,32)
>> 395
>> 396 #
>> 397 # The 64-bit ELF tools are pretty broken so at this time we generate 64-bit
>> 398 # ELF files from 32-bit files by conversion.
>> 399 #
>> 400 quiet_cmd_64 = OBJCOPY $@
>> 401 cmd_64 = $(OBJCOPY) -O $(64bit-bfd) $(OBJCOPYFLAGS) $< $@
>> 402 vmlinux.64: vmlinux
>> 403 $(call cmd,64)
>> 404
>> 405 all: $(all-y) $(KBUILD_DTBS)
>> 406
>> 407 # boot
>> 408 $(boot-y): $(vmlinux-32) FORCE
>> 409 $(Q)$(MAKE) $(build)=arch/mips/boot VMLINUX=$(vmlinux-32) \
>> 410 $(bootvars-y) arch/mips/boot/$@
>> 411
>> 412 ifdef CONFIG_SYS_SUPPORTS_ZBOOT
>> 413 # boot/compressed
>> 414 $(bootz-y): $(vmlinux-32) FORCE
>> 415 $(Q)$(MAKE) $(build)=arch/mips/boot/compressed \
>> 416 $(bootvars-y) 32bit-bfd=$(32bit-bfd) arch/mips/boot/$@
>> 417 else
>> 418 vmlinuz: FORCE
>> 419 @echo ' CONFIG_SYS_SUPPORTS_ZBOOT is not enabled'
>> 420 /bin/false
277 endif 421 endif
278 422
279 all: $(notdir $(KBUILD_IMAGE)) <<
280 423
>> 424 CLEAN_FILES += vmlinux.32 vmlinux.64
281 425
282 archheaders: !! 426 # device-trees
283 $(Q)$(MAKE) $(build)=arch/arm/tools ua !! 427 core-y += arch/mips/boot/dts/
284 428
285 archprepare: 429 archprepare:
286 $(Q)$(MAKE) $(build)=arch/arm/tools ka !! 430 ifdef CONFIG_MIPS32_N32
>> 431 @$(kecho) ' Checking missing-syscalls for N32'
>> 432 $(Q)$(MAKE) $(build)=. missing-syscalls missing_syscalls_flags="-mabi=n32"
>> 433 endif
>> 434 ifdef CONFIG_MIPS32_O32
>> 435 @$(kecho) ' Checking missing-syscalls for O32'
>> 436 $(Q)$(MAKE) $(build)=. missing-syscalls missing_syscalls_flags="-mabi=32"
>> 437 endif
>> 438
>> 439 install:
>> 440 $(Q)install -D -m 755 vmlinux $(INSTALL_PATH)/vmlinux-$(KERNELRELEASE)
>> 441 ifdef CONFIG_SYS_SUPPORTS_ZBOOT
>> 442 $(Q)install -D -m 755 vmlinuz $(INSTALL_PATH)/vmlinuz-$(KERNELRELEASE)
>> 443 endif
>> 444 $(Q)install -D -m 644 .config $(INSTALL_PATH)/config-$(KERNELRELEASE)
>> 445 $(Q)install -D -m 644 System.map $(INSTALL_PATH)/System.map-$(KERNELRELEASE)
287 446
288 # Convert bzImage to zImage !! 447 archheaders:
289 bzImage: zImage !! 448 $(Q)$(MAKE) $(build)=arch/mips/kernel/syscalls all
290 449
291 BOOT_TARGETS = zImage Image xipImage bootpI !! 450 define archhelp
292 INSTALL_TARGETS = zinstall uinstall install !! 451 echo ' install - install kernel into $(INSTALL_PATH)'
>> 452 echo ' vmlinux.ecoff - ECOFF boot image'
>> 453 echo ' vmlinux.bin - Raw binary boot image'
>> 454 echo ' vmlinux.srec - SREC boot image'
>> 455 echo ' vmlinux.32 - 64-bit boot image wrapped in 32bits (IP22/IP32)'
>> 456 echo ' vmlinuz - Compressed boot(zboot) image'
>> 457 echo ' vmlinuz.ecoff - ECOFF zboot image'
>> 458 echo ' vmlinuz.bin - Raw binary zboot image'
>> 459 echo ' vmlinuz.srec - SREC zboot image'
>> 460 echo ' uImage - U-Boot image'
>> 461 echo ' uImage.bin - U-Boot image (uncompressed)'
>> 462 echo ' uImage.bz2 - U-Boot image (bz2)'
>> 463 echo ' uImage.gz - U-Boot image (gzip)'
>> 464 echo ' uImage.lzma - U-Boot image (lzma)'
>> 465 echo ' uImage.lzo - U-Boot image (lzo)'
>> 466 echo ' uzImage.bin - U-Boot image (self-extracting)'
>> 467 echo
>> 468 echo ' These will be default as appropriate for a configured platform.'
>> 469 echo
>> 470 echo ' If you are targeting a system supported by generic kernels you may'
>> 471 echo ' configure the kernel for a given architecture target like so:'
>> 472 echo
>> 473 echo ' {micro32,32,64}{r1,r2,r6}{el,}_defconfig <BOARDS="list of boards">'
>> 474 echo
>> 475 echo ' Where BOARDS is some subset of the following:'
>> 476 for board in $(sort $(BOARDS)); do echo " $${board}"; done
>> 477 echo
>> 478 echo ' Specifically the following generic default configurations are'
>> 479 echo ' supported:'
>> 480 echo
>> 481 $(foreach cfg,$(generic_defconfigs),
>> 482 printf " %-24s - Build generic kernel for $(call describe_generic_defconfig,$(cfg))\n" $(cfg);)
>> 483 echo
>> 484 echo ' The following legacy default configurations have been converted to'
>> 485 echo ' generic and can still be used:'
>> 486 echo
>> 487 $(foreach cfg,$(sort $(legacy_defconfigs)),
>> 488 printf " %-24s - Build $($(cfg)-y)\n" $(cfg);)
>> 489 echo
>> 490 echo ' Otherwise, the following default configurations are available:'
>> 491 endef
293 492
294 PHONY += bzImage $(BOOT_TARGETS) $(INSTALL_TAR !! 493 generic_config_dir = $(srctree)/arch/$(ARCH)/configs/generic
>> 494 generic_defconfigs :=
295 495
296 bootpImage uImage: zImage !! 496 #
297 zImage: Image !! 497 # If the user generates a generic kernel configuration without specifying a
>> 498 # list of boards to include the config fragments for, default to including all
>> 499 # available board config fragments.
>> 500 #
>> 501 ifeq ($(BOARDS),)
>> 502 BOARDS = $(patsubst board-%.config,%,$(notdir $(wildcard $(generic_config_dir)/board-*.config)))
>> 503 endif
298 504
299 $(BOOT_TARGETS): vmlinux !! 505 #
300 $(Q)$(MAKE) $(build)=$(boot) $(boot)/$ !! 506 # Generic kernel configurations which merge generic_defconfig with the
301 @$(kecho) ' Kernel: $(boot)/$@ is rea !! 507 # appropriate config fragments from arch/mips/configs/generic/, resulting in
>> 508 # the ability to easily configure the kernel for a given architecture,
>> 509 # endianness & set of boards without duplicating the needed configuration in
>> 510 # hundreds of defconfig files.
>> 511 #
>> 512 define gen_generic_defconfigs
>> 513 $(foreach bits,$(1),$(foreach rev,$(2),$(foreach endian,$(3),
>> 514 target := $(bits)$(rev)$(filter el,$(endian))_defconfig
>> 515 generic_defconfigs += $$(target)
>> 516 $$(target): $(generic_config_dir)/$(bits)$(rev).config
>> 517 $$(target): $(generic_config_dir)/$(endian).config
>> 518 )))
>> 519 endef
302 520
303 $(INSTALL_TARGETS): KBUILD_IMAGE = $(boot)/$(p !! 521 $(eval $(call gen_generic_defconfigs,32 64,r1 r2 r6,eb el))
304 $(INSTALL_TARGETS): !! 522 $(eval $(call gen_generic_defconfigs,micro32,r2,eb el))
305 $(call cmd,install) <<
306 523
307 vdso-install-$(CONFIG_VDSO) += arch/arm/vdso/v !! 524 define describe_generic_defconfig
>> 525 $(subst 32r,MIPS32 r,$(subst 64r,MIPS64 r,$(subst el, little endian,$(patsubst %_defconfig,%,$(1)))))
>> 526 endef
308 527
309 # My testing targets (bypasses dependencies) !! 528 .PHONY: $(generic_defconfigs)
310 bp:; $(Q)$(MAKE) $(build)=$(boot) $(boot)/b !! 529 $(generic_defconfigs):
>> 530 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/kconfig/merge_config.sh \
>> 531 -m -O $(objtree) $(srctree)/arch/$(ARCH)/configs/generic_defconfig $^ | \
>> 532 grep -Ev '^#'
>> 533 $(Q)cp $(KCONFIG_CONFIG) $(objtree)/.config.$@
>> 534 $(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig \
>> 535 KCONFIG_CONFIG=$(objtree)/.config.$@ >/dev/null
>> 536 $(Q)$(CONFIG_SHELL) $(srctree)/arch/$(ARCH)/tools/generic-board-config.sh \
>> 537 $(srctree) $(objtree) $(objtree)/.config.$@ $(KCONFIG_CONFIG) \
>> 538 "$(origin BOARDS)" $(BOARDS)
>> 539 $(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig
311 540
312 include $(srctree)/scripts/Makefile.defconf !! 541 #
313 PHONY += multi_v7_lpae_defconfig !! 542 # Prevent generic merge_config rules attempting to merge single fragments
314 multi_v7_lpae_defconfig: !! 543 #
315 $(call merge_into_defconfig,multi_v7_d !! 544 $(generic_config_dir)/%.config: ;
316 545
317 define archhelp !! 546 #
318 echo '* zImage - Compressed kernel i !! 547 # Prevent direct use of generic_defconfig, which is intended to be used as the
319 echo ' Image - Uncompressed kernel !! 548 # basis of the various ISA-specific targets generated above.
320 echo '* xipImage - XIP kernel image, i !! 549 #
321 echo ' uImage - U-Boot wrapped zIma !! 550 .PHONY: generic_defconfig
322 echo ' bootpImage - Combined zImage and !! 551 generic_defconfig:
323 echo ' (supply initrd imag !! 552 $(Q)echo "generic_defconfig is not intended for direct use, but should instead be"
324 echo ' install - Install uncompresse !! 553 $(Q)echo "used via an ISA-specific target from the following list:"
325 echo ' zinstall - Install compressed !! 554 $(Q)echo
326 echo ' uinstall - Install U-Boot wrap !! 555 $(Q)for cfg in $(generic_defconfigs); do echo " $${cfg}"; done
327 echo ' Install using (your !! 556 $(Q)echo
328 echo ' (distribution) /sbi !! 557 $(Q)false
329 echo ' install to $$(INSTA !! 558
330 echo !! 559 #
331 echo ' multi_v7_lpae_defconfig - multi !! 560 # Legacy defconfig compatibility - these targets used to be real defconfigs but
332 endef !! 561 # now that the boards have been converted to use the generic kernel they are
>> 562 # wrappers around the generic rules above.
>> 563 #
>> 564 legacy_defconfigs += ocelot_defconfig
>> 565 ocelot_defconfig-y := 32r2el_defconfig BOARDS=ocelot
>> 566
>> 567 legacy_defconfigs += sead3_defconfig
>> 568 sead3_defconfig-y := 32r2el_defconfig BOARDS=sead-3
>> 569
>> 570 legacy_defconfigs += sead3micro_defconfig
>> 571 sead3micro_defconfig-y := micro32r2el_defconfig BOARDS=sead-3
>> 572
>> 573 legacy_defconfigs += xilfpga_defconfig
>> 574 xilfpga_defconfig-y := 32r2el_defconfig BOARDS=xilfpga
>> 575
>> 576 legacy_defconfigs += pistachio_defconfig
>> 577 pistachio_defconfig-y := 32r2el_defconfig BOARDS=marduk
>> 578
>> 579 .PHONY: $(legacy_defconfigs)
>> 580 $(legacy_defconfigs):
>> 581 $(Q)$(MAKE) -f $(srctree)/Makefile $($@-y)
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