6 config BR2_KERNEL_64_USERLAND_32
12 config BR2_ARCH_HAS_MMU_MANDATORY
15 config BR2_ARCH_HAS_MMU_OPTIONAL
18 config BR2_ARCH_HAS_FDPIC_SUPPORT
22 prompt "Target Architecture"
25 Select the target architecture family to build for.
28 bool "ARC (little endian)"
29 select BR2_ARCH_HAS_MMU_MANDATORY
31 Synopsys' DesignWare ARC Processor Cores are a family of 32-bit CPUs
32 that can be used from deeply embedded to high performance host
33 applications. Little endian.
36 bool "ARC (big endian)"
37 select BR2_ARCH_HAS_MMU_MANDATORY
39 Synopsys' DesignWare ARC Processor Cores are a family of 32-bit CPUs
40 that can be used from deeply embedded to high performance host
41 applications. Big endian.
44 bool "ARM (little endian)"
45 # MMU support is set by the subarchitecture file, arch/Config.in.arm
47 ARM is a 32-bit reduced instruction set computer (RISC) instruction
48 set architecture (ISA) developed by ARM Holdings. Little endian.
50 http://en.wikipedia.org/wiki/ARM
53 bool "ARM (big endian)"
54 # MMU support is set by the subarchitecture file, arch/Config.in.arm
56 ARM is a 32-bit reduced instruction set computer (RISC) instruction
57 set architecture (ISA) developed by ARM Holdings. Big endian.
59 http://en.wikipedia.org/wiki/ARM
62 bool "AArch64 (little endian)"
64 select BR2_ARCH_HAS_MMU_MANDATORY
66 Aarch64 is a 64-bit architecture developed by ARM Holdings.
67 http://www.arm.com/products/processors/instruction-set-architectures/armv8-architecture.php
68 http://en.wikipedia.org/wiki/ARM
71 bool "AArch64 (big endian)"
73 select BR2_ARCH_HAS_MMU_MANDATORY
75 Aarch64 is a 64-bit architecture developed by ARM Holdings.
76 http://www.arm.com/products/processors/instruction-set-architectures/armv8-architecture.php
77 http://en.wikipedia.org/wiki/ARM
81 select BR2_ARCH_HAS_FDPIC_SUPPORT
83 The Blackfin is a family of 16 or 32-bit microprocessors developed,
84 manufactured and marketed by Analog Devices.
85 http://www.analog.com/
86 http://en.wikipedia.org/wiki/Blackfin
90 select BR2_ARCH_HAS_MMU_MANDATORY
92 Intel i386 architecture compatible microprocessor
93 http://en.wikipedia.org/wiki/I386
97 # MMU support is set by the subarchitecture file, arch/Config.in.m68k
99 Motorola 68000 family microprocessor
100 http://en.wikipedia.org/wiki/M68k
102 config BR2_microblazeel
103 bool "Microblaze AXI (little endian)"
104 select BR2_ARCH_HAS_MMU_MANDATORY
106 Soft processor core designed for Xilinx FPGAs from Xilinx. AXI bus
107 based architecture (little endian)
108 http://www.xilinx.com
109 http://en.wikipedia.org/wiki/Microblaze
111 config BR2_microblazebe
112 bool "Microblaze non-AXI (big endian)"
113 select BR2_ARCH_HAS_MMU_MANDATORY
115 Soft processor core designed for Xilinx FPGAs from Xilinx. PLB bus
116 based architecture (non-AXI, big endian)
117 http://www.xilinx.com
118 http://en.wikipedia.org/wiki/Microblaze
121 bool "MIPS (big endian)"
122 select BR2_ARCH_HAS_MMU_MANDATORY
124 MIPS is a RISC microprocessor from MIPS Technologies. Big endian.
126 http://en.wikipedia.org/wiki/MIPS_Technologies
129 bool "MIPS (little endian)"
130 select BR2_ARCH_HAS_MMU_MANDATORY
132 MIPS is a RISC microprocessor from MIPS Technologies. Little endian.
134 http://en.wikipedia.org/wiki/MIPS_Technologies
137 bool "MIPS64 (big endian)"
138 select BR2_ARCH_IS_64
139 select BR2_ARCH_HAS_MMU_MANDATORY
141 MIPS is a RISC microprocessor from MIPS Technologies. Big endian.
143 http://en.wikipedia.org/wiki/MIPS_Technologies
146 bool "MIPS64 (little endian)"
147 select BR2_ARCH_IS_64
148 select BR2_ARCH_HAS_MMU_MANDATORY
150 MIPS is a RISC microprocessor from MIPS Technologies. Little endian.
152 http://en.wikipedia.org/wiki/MIPS_Technologies
156 select BR2_ARCH_HAS_MMU_MANDATORY
158 Nios II is a soft core processor from Altera Corporation.
159 http://www.altera.com/
160 http://en.wikipedia.org/wiki/Nios_II
164 select BR2_ARCH_HAS_MMU_MANDATORY
166 PowerPC is a RISC architecture created by Apple-IBM-Motorola alliance.
168 http://www.power.org/
169 http://en.wikipedia.org/wiki/Powerpc
172 bool "PowerPC64 (big endian)"
173 select BR2_ARCH_IS_64
174 select BR2_ARCH_HAS_MMU_MANDATORY
176 PowerPC is a RISC architecture created by Apple-IBM-Motorola alliance.
178 http://www.power.org/
179 http://en.wikipedia.org/wiki/Powerpc
181 config BR2_powerpc64le
182 bool "PowerPC64 (little endian)"
183 select BR2_ARCH_IS_64
184 select BR2_ARCH_HAS_MMU_MANDATORY
186 PowerPC is a RISC architecture created by Apple-IBM-Motorola alliance.
188 http://www.power.org/
189 http://en.wikipedia.org/wiki/Powerpc
193 select BR2_ARCH_HAS_MMU_OPTIONAL
195 SuperH (or SH) is a 32-bit reduced instruction set computer (RISC)
196 instruction set architecture (ISA) developed by Hitachi.
197 http://www.hitachi.com/
198 http://en.wikipedia.org/wiki/SuperH
202 select BR2_ARCH_HAS_MMU_MANDATORY
204 SPARC (from Scalable Processor Architecture) is a RISC instruction
205 set architecture (ISA) developed by Sun Microsystems.
206 http://www.oracle.com/sun
207 http://en.wikipedia.org/wiki/Sparc
211 select BR2_ARCH_IS_64
212 select BR2_ARCH_HAS_MMU_MANDATORY
214 SPARC (from Scalable Processor Architecture) is a RISC instruction
215 set architecture (ISA) developed by Sun Microsystems.
216 http://www.oracle.com/sun
217 http://en.wikipedia.org/wiki/Sparc
221 select BR2_ARCH_IS_64
222 select BR2_ARCH_HAS_MMU_MANDATORY
224 x86-64 is an extension of the x86 instruction set (Intel i386
225 architecture compatible microprocessor).
226 http://en.wikipedia.org/wiki/X86_64
230 # MMU support is set by the subarchitecture file, arch/Config.in.xtensa
232 Xtensa is a Tensilica processor IP architecture.
233 http://en.wikipedia.org/wiki/Xtensa
234 http://www.tensilica.com/
238 # The following string values are defined by the individual
239 # Config.in.$ARCH files
246 config BR2_GCC_TARGET_ARCH
249 config BR2_GCC_TARGET_ABI
252 config BR2_GCC_TARGET_CPU
255 config BR2_GCC_TARGET_CPU_REVISION
258 # The value of this option will be passed as --with-fpu=<value> when
259 # building gcc (internal backend) or -mfpu=<value> in the toolchain
260 # wrapper (external toolchain)
261 config BR2_GCC_TARGET_FPU
264 # The value of this option will be passed as --with-float=<value> when
265 # building gcc (internal backend) or -mfloat-abi=<value> in the toolchain
266 # wrapper (external toolchain)
267 config BR2_GCC_TARGET_FLOAT_ABI
270 # The value of this option will be passed as --with-mode=<value> when
271 # building gcc (internal backend) or -m<value> in the toolchain
272 # wrapper (external toolchain)
273 config BR2_GCC_TARGET_MODE
276 # Must be selected by binary formats that support shared libraries.
277 config BR2_BINFMT_SUPPORTS_SHARED
280 # Set up target binary format
282 prompt "Target Binary Format"
283 default BR2_BINFMT_ELF if BR2_USE_MMU
284 default BR2_BINFMT_FDPIC if BR2_ARCH_HAS_FDPIC_SUPPORT
285 default BR2_BINFMT_FLAT
287 config BR2_BINFMT_ELF
289 depends on BR2_USE_MMU
290 select BR2_BINFMT_SUPPORTS_SHARED
292 ELF (Executable and Linkable Format) is a format for libraries and
293 executables used across different architectures and operating
296 config BR2_BINFMT_FDPIC
298 depends on BR2_ARCH_HAS_FDPIC_SUPPORT
299 select BR2_BINFMT_SUPPORTS_SHARED
301 ELF FDPIC binaries are based on ELF, but allow the individual load
302 segments of a binary to be located in memory independently of each
303 other. This makes this format ideal for use in environments where no
306 config BR2_BINFMT_FLAT
308 depends on !BR2_USE_MMU
310 FLAT binary is a relatively simple and lightweight executable format
311 based on the original a.out format. It is widely used in environment
312 where no MMU is available.
316 # Set up flat binary type
318 prompt "FLAT Binary type"
319 depends on BR2_BINFMT_FLAT
320 default BR2_BINFMT_FLAT_ONE
322 config BR2_BINFMT_FLAT_ONE
323 bool "One memory region"
325 All segments are linked into one memory region.
327 config BR2_BINFMT_FLAT_SEP_DATA
328 bool "Separate data and code region"
329 # this FLAT binary type technically exists on m68k, but fails
330 # to build numerous packages: due to architecture limitation,
331 # big functions cannot be built in this mode. They cause build
332 # failures such as "Tried to convert PC relative branch to
333 # absolute jump" or "error: value -yyyyy out of range".
336 Allow for the data and text segments to be separated and placed in
337 different regions of memory.
339 config BR2_BINFMT_FLAT_SHARED
341 depends on BR2_m68k || BR2_bfin
342 # Even though this really generates shared binaries, there is no libdl
343 # and dlopen() cannot be used. So packages that require shared
344 # libraries cannot be built. Therefore, we don't select
345 # BR2_BINFMT_SUPPORTS_SHARED and therefore force BR2_STATIC_LIBS.
346 # Although this adds -static to the compilation, that's not a problem
347 # because the -mid-shared-library option overrides it.
349 Allow to load and link indiviual FLAT binaries at run time.
353 if BR2_arcle || BR2_arceb
354 source "arch/Config.in.arc"
357 if BR2_arm || BR2_armeb
358 source "arch/Config.in.arm"
361 if BR2_aarch64 || BR2_aarch64_be
362 source "arch/Config.in.aarch64"
366 source "arch/Config.in.bfin"
370 source "arch/Config.in.m68k"
373 if BR2_microblazeel || BR2_microblazebe
374 source "arch/Config.in.microblaze"
377 if BR2_mips || BR2_mips64 || BR2_mipsel || BR2_mips64el
378 source "arch/Config.in.mips"
382 source "arch/Config.in.nios2"
385 if BR2_powerpc || BR2_powerpc64 || BR2_powerpc64le
386 source "arch/Config.in.powerpc"
390 source "arch/Config.in.sh"
393 if BR2_sparc || BR2_sparc64
394 source "arch/Config.in.sparc"
397 if BR2_i386 || BR2_x86_64
398 source "arch/Config.in.x86"
402 source "arch/Config.in.xtensa"
405 endmenu # Target options