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 select BR2_ARCH_HAS_MMU_MANDATORY
98 depends on BROKEN # ice in uclibc / inet_ntoa_r
100 Motorola 68000 family microprocessor
101 http://en.wikipedia.org/wiki/M68k
103 config BR2_microblazeel
104 bool "Microblaze AXI (little endian)"
105 select BR2_ARCH_HAS_MMU_MANDATORY
107 Soft processor core designed for Xilinx FPGAs from Xilinx. AXI bus
108 based architecture (little endian)
109 http://www.xilinx.com
110 http://en.wikipedia.org/wiki/Microblaze
112 config BR2_microblazebe
113 bool "Microblaze non-AXI (big endian)"
114 select BR2_ARCH_HAS_MMU_MANDATORY
116 Soft processor core designed for Xilinx FPGAs from Xilinx. PLB bus
117 based architecture (non-AXI, big endian)
118 http://www.xilinx.com
119 http://en.wikipedia.org/wiki/Microblaze
122 bool "MIPS (big endian)"
123 select BR2_ARCH_HAS_MMU_MANDATORY
125 MIPS is a RISC microprocessor from MIPS Technologies. Big endian.
127 http://en.wikipedia.org/wiki/MIPS_Technologies
130 bool "MIPS (little endian)"
131 select BR2_ARCH_HAS_MMU_MANDATORY
133 MIPS is a RISC microprocessor from MIPS Technologies. Little endian.
135 http://en.wikipedia.org/wiki/MIPS_Technologies
138 bool "MIPS64 (big endian)"
139 select BR2_ARCH_IS_64
140 select BR2_ARCH_HAS_MMU_MANDATORY
142 MIPS is a RISC microprocessor from MIPS Technologies. Big endian.
144 http://en.wikipedia.org/wiki/MIPS_Technologies
147 bool "MIPS64 (little endian)"
148 select BR2_ARCH_IS_64
149 select BR2_ARCH_HAS_MMU_MANDATORY
151 MIPS is a RISC microprocessor from MIPS Technologies. Little endian.
153 http://en.wikipedia.org/wiki/MIPS_Technologies
157 select BR2_ARCH_HAS_MMU_MANDATORY
159 Nios II is a soft core processor from Altera Corporation.
160 http://www.altera.com/
161 http://en.wikipedia.org/wiki/Nios_II
165 select BR2_ARCH_HAS_MMU_MANDATORY
167 PowerPC is a RISC architecture created by Apple-IBM-Motorola alliance.
169 http://www.power.org/
170 http://en.wikipedia.org/wiki/Powerpc
173 bool "PowerPC64 (big endian)"
174 select BR2_ARCH_IS_64
175 select BR2_ARCH_HAS_MMU_MANDATORY
177 PowerPC is a RISC architecture created by Apple-IBM-Motorola alliance.
179 http://www.power.org/
180 http://en.wikipedia.org/wiki/Powerpc
182 config BR2_powerpc64le
183 bool "PowerPC64 (little endian)"
184 select BR2_ARCH_IS_64
185 select BR2_ARCH_HAS_MMU_MANDATORY
187 PowerPC is a RISC architecture created by Apple-IBM-Motorola alliance.
189 http://www.power.org/
190 http://en.wikipedia.org/wiki/Powerpc
194 select BR2_ARCH_HAS_MMU_OPTIONAL
196 SuperH (or SH) is a 32-bit reduced instruction set computer (RISC)
197 instruction set architecture (ISA) developed by Hitachi.
198 http://www.hitachi.com/
199 http://en.wikipedia.org/wiki/SuperH
203 depends on BR2_DEPRECATED_SINCE_2015_05
204 select BR2_ARCH_HAS_MMU_MANDATORY
206 SuperH64 (or SH) is a 64-bit reduced instruction set computer (RISC)
207 instruction set architecture (ISA) developed by Hitachi.
208 http://www.hitachi.com/
209 http://en.wikipedia.org/wiki/SuperH
213 select BR2_ARCH_HAS_MMU_MANDATORY
215 SPARC (from Scalable Processor Architecture) is a RISC instruction
216 set architecture (ISA) developed by Sun Microsystems.
217 http://www.oracle.com/sun
218 http://en.wikipedia.org/wiki/Sparc
222 select BR2_ARCH_IS_64
223 select BR2_ARCH_HAS_MMU_MANDATORY
225 SPARC (from Scalable Processor Architecture) is a RISC instruction
226 set architecture (ISA) developed by Sun Microsystems.
227 http://www.oracle.com/sun
228 http://en.wikipedia.org/wiki/Sparc
232 select BR2_ARCH_IS_64
233 select BR2_ARCH_HAS_MMU_MANDATORY
235 x86-64 is an extension of the x86 instruction set (Intel i386
236 architecture compatible microprocessor).
237 http://en.wikipedia.org/wiki/X86_64
241 # MMU support is set by the subarchitecture file, arch/Config.in.xtensa
243 Xtensa is a Tensilica processor IP architecture.
244 http://en.wikipedia.org/wiki/Xtensa
245 http://www.tensilica.com/
249 # The following string values are defined by the individual
250 # Config.in.$ARCH files
257 config BR2_GCC_TARGET_ARCH
260 config BR2_GCC_TARGET_ABI
263 config BR2_GCC_TARGET_CPU
266 config BR2_GCC_TARGET_CPU_REVISION
269 # The value of this option will be passed as --with-fpu=<value> when
270 # building gcc (internal backend) or -mfpu=<value> in the toolchain
271 # wrapper (external toolchain)
272 config BR2_GCC_TARGET_FPU
275 # The value of this option will be passed as --with-float=<value> when
276 # building gcc (internal backend) or -mfloat-abi=<value> in the toolchain
277 # wrapper (external toolchain)
278 config BR2_GCC_TARGET_FLOAT_ABI
281 # The value of this option will be passed as --with-mode=<value> when
282 # building gcc (internal backend) or -m<value> in the toolchain
283 # wrapper (external toolchain)
284 config BR2_GCC_TARGET_MODE
287 # If the architecture has atomic operations, select this:
288 config BR2_ARCH_HAS_ATOMICS
291 # Must be selected by binary formats that support shared libraries.
292 config BR2_BINFMT_SUPPORTS_SHARED
295 # Set up target binary format
297 prompt "Target Binary Format"
298 default BR2_BINFMT_ELF if BR2_USE_MMU
299 default BR2_BINFMT_FDPIC if BR2_ARCH_HAS_FDPIC_SUPPORT
300 default BR2_BINFMT_FLAT
302 config BR2_BINFMT_ELF
304 depends on BR2_USE_MMU
305 select BR2_BINFMT_SUPPORTS_SHARED
307 ELF (Executable and Linkable Format) is a format for libraries and
308 executables used across different architectures and operating
311 config BR2_BINFMT_FDPIC
313 depends on BR2_ARCH_HAS_FDPIC_SUPPORT
314 select BR2_BINFMT_SUPPORTS_SHARED
316 ELF FDPIC binaries are based on ELF, but allow the individual load
317 segments of a binary to be located in memory independently of each
318 other. This makes this format ideal for use in environments where no
321 config BR2_BINFMT_FLAT
323 depends on !BR2_USE_MMU
325 FLAT binary is a relatively simple and lightweight executable format
326 based on the original a.out format. It is widely used in environment
327 where no MMU is available.
331 # Set up flat binary type
333 prompt "FLAT Binary type"
334 depends on BR2_BINFMT_FLAT
335 default BR2_BINFMT_FLAT_ONE
337 config BR2_BINFMT_FLAT_ONE
338 bool "One memory region"
340 All segments are linked into one memory region.
342 config BR2_BINFMT_FLAT_SEP_DATA
343 bool "Separate data and code region"
345 Allow for the data and text segments to be separated and placed in
346 different regions of memory.
348 config BR2_BINFMT_FLAT_SHARED
350 # Even though this really generates shared binaries, there is no libdl
351 # and dlopen() cannot be used. So packages that require shared
352 # libraries cannot be built. Therefore, we don't select
353 # BR2_BINFMT_SUPPORTS_SHARED and therefore force BR2_STATIC_LIBS.
354 # Although this adds -static to the compilation, that's not a problem
355 # because the -mid-shared-library option overrides it.
357 Allow to load and link indiviual FLAT binaries at run time.
361 if BR2_arcle || BR2_arceb
362 source "arch/Config.in.arc"
365 if BR2_arm || BR2_armeb
366 source "arch/Config.in.arm"
369 if BR2_aarch64 || BR2_aarch64_be
370 source "arch/Config.in.aarch64"
374 source "arch/Config.in.bfin"
378 source "arch/Config.in.m68k"
381 if BR2_microblazeel || BR2_microblazebe
382 source "arch/Config.in.microblaze"
385 if BR2_mips || BR2_mips64 || BR2_mipsel || BR2_mips64el
386 source "arch/Config.in.mips"
390 source "arch/Config.in.nios2"
393 if BR2_powerpc || BR2_powerpc64 || BR2_powerpc64le
394 source "arch/Config.in.powerpc"
397 if BR2_sh || BR2_sh64
398 source "arch/Config.in.sh"
401 if BR2_sparc || BR2_sparc64
402 source "arch/Config.in.sparc"
405 if BR2_i386 || BR2_x86_64
406 source "arch/Config.in.x86"
410 source "arch/Config.in.xtensa"
413 endmenu # Target options