| menu "Target options" |
| |
| config BR2_ARCH_IS_64 |
| bool |
| |
| config BR2_KERNEL_64_USERLAND_32 |
| bool |
| |
| config BR2_SOFT_FLOAT |
| bool |
| |
| config BR2_ARCH_HAS_MMU_MANDATORY |
| bool |
| |
| config BR2_ARCH_HAS_MMU_OPTIONAL |
| bool |
| |
| choice |
| prompt "Target Architecture" |
| default BR2_i386 |
| help |
| Select the target architecture family to build for. |
| |
| config BR2_arcle |
| bool "ARC (little endian)" |
| select BR2_ARCH_HAS_MMU_MANDATORY |
| help |
| Synopsys' DesignWare ARC Processor Cores are a family of |
| 32-bit CPUs that can be used from deeply embedded to high |
| performance host applications. Little endian. |
| |
| config BR2_arceb |
| bool "ARC (big endian)" |
| select BR2_ARCH_HAS_MMU_MANDATORY |
| help |
| Synopsys' DesignWare ARC Processor Cores are a family of |
| 32-bit CPUs that can be used from deeply embedded to high |
| performance host applications. Big endian. |
| |
| config BR2_arm |
| bool "ARM (little endian)" |
| # MMU support is set by the subarchitecture file, arch/Config.in.arm |
| help |
| ARM is a 32-bit reduced instruction set computer (RISC) |
| instruction set architecture (ISA) developed by ARM Holdings. |
| Little endian. |
| http://www.arm.com/ |
| http://en.wikipedia.org/wiki/ARM |
| |
| config BR2_armeb |
| bool "ARM (big endian)" |
| # MMU support is set by the subarchitecture file, arch/Config.in.arm |
| help |
| ARM is a 32-bit reduced instruction set computer (RISC) |
| instruction set architecture (ISA) developed by ARM Holdings. |
| Big endian. |
| http://www.arm.com/ |
| http://en.wikipedia.org/wiki/ARM |
| |
| config BR2_aarch64 |
| bool "AArch64 (little endian)" |
| select BR2_ARCH_IS_64 |
| select BR2_ARCH_HAS_MMU_MANDATORY |
| help |
| Aarch64 is a 64-bit architecture developed by ARM Holdings. |
| http://www.arm.com/products/processors/instruction-set-architectures/armv8-architecture.php |
| http://en.wikipedia.org/wiki/ARM |
| |
| config BR2_aarch64_be |
| bool "AArch64 (big endian)" |
| select BR2_ARCH_IS_64 |
| select BR2_ARCH_HAS_MMU_MANDATORY |
| help |
| Aarch64 is a 64-bit architecture developed by ARM Holdings. |
| http://www.arm.com/products/processors/instruction-set-architectures/armv8-architecture.php |
| http://en.wikipedia.org/wiki/ARM |
| |
| config BR2_csky |
| bool "csky" |
| select BR2_ARCH_HAS_MMU_MANDATORY |
| # Most variants are supported by gcc-9+, except one that is |
| # handled as a special exception in package/gcc/Config.in.host |
| select BR2_ARCH_NEEDS_GCC_AT_LEAST_9 |
| help |
| csky is processor IP from china. |
| http://www.c-sky.com/ |
| http://www.github.com/c-sky |
| |
| config BR2_i386 |
| bool "i386" |
| select BR2_ARCH_HAS_MMU_MANDATORY |
| help |
| Intel i386 architecture compatible microprocessor |
| http://en.wikipedia.org/wiki/I386 |
| |
| config BR2_m68k |
| bool "m68k" |
| # MMU support is set by the subarchitecture file, arch/Config.in.m68k |
| help |
| Motorola 68000 family microprocessor |
| http://en.wikipedia.org/wiki/M68k |
| |
| config BR2_microblazeel |
| bool "Microblaze AXI (little endian)" |
| select BR2_ARCH_HAS_MMU_MANDATORY |
| help |
| Soft processor core designed for Xilinx FPGAs from Xilinx. AXI |
| bus based architecture (little endian) |
| http://www.xilinx.com |
| http://en.wikipedia.org/wiki/Microblaze |
| |
| config BR2_microblazebe |
| bool "Microblaze non-AXI (big endian)" |
| select BR2_ARCH_HAS_MMU_MANDATORY |
| help |
| Soft processor core designed for Xilinx FPGAs from Xilinx. PLB |
| bus based architecture (non-AXI, big endian) |
| http://www.xilinx.com |
| http://en.wikipedia.org/wiki/Microblaze |
| |
| config BR2_mips |
| bool "MIPS (big endian)" |
| select BR2_ARCH_HAS_MMU_MANDATORY |
| help |
| MIPS is a RISC microprocessor from MIPS Technologies. Big |
| endian. |
| http://www.mips.com/ |
| http://en.wikipedia.org/wiki/MIPS_Technologies |
| |
| config BR2_mipsel |
| bool "MIPS (little endian)" |
| select BR2_ARCH_HAS_MMU_MANDATORY |
| help |
| MIPS is a RISC microprocessor from MIPS Technologies. Little |
| endian. |
| http://www.mips.com/ |
| http://en.wikipedia.org/wiki/MIPS_Technologies |
| |
| config BR2_mips64 |
| bool "MIPS64 (big endian)" |
| select BR2_ARCH_IS_64 |
| select BR2_ARCH_HAS_MMU_MANDATORY |
| help |
| MIPS is a RISC microprocessor from MIPS Technologies. Big |
| endian. |
| http://www.mips.com/ |
| http://en.wikipedia.org/wiki/MIPS_Technologies |
| |
| config BR2_mips64el |
| bool "MIPS64 (little endian)" |
| select BR2_ARCH_IS_64 |
| select BR2_ARCH_HAS_MMU_MANDATORY |
| help |
| MIPS is a RISC microprocessor from MIPS Technologies. Little |
| endian. |
| http://www.mips.com/ |
| http://en.wikipedia.org/wiki/MIPS_Technologies |
| |
| config BR2_nds32 |
| bool "nds32" |
| select BR2_ARCH_HAS_NO_TOOLCHAIN_BUILDROOT |
| select BR2_ARCH_HAS_MMU_MANDATORY |
| help |
| nds32 is a 32-bit architecture developed by Andes Technology. |
| https://en.wikipedia.org/wiki/Andes_Technology |
| |
| config BR2_nios2 |
| bool "Nios II" |
| select BR2_ARCH_HAS_MMU_MANDATORY |
| help |
| Nios II is a soft core processor from Altera Corporation. |
| http://www.altera.com/ |
| http://en.wikipedia.org/wiki/Nios_II |
| |
| config BR2_or1k |
| bool "OpenRISC" |
| select BR2_ARCH_HAS_MMU_MANDATORY |
| help |
| OpenRISC is a free and open processor for embedded system. |
| http://openrisc.io |
| |
| config BR2_powerpc |
| bool "PowerPC" |
| select BR2_ARCH_HAS_MMU_MANDATORY |
| help |
| PowerPC is a RISC architecture created by Apple-IBM-Motorola |
| alliance. Big endian. |
| http://www.power.org/ |
| http://en.wikipedia.org/wiki/Powerpc |
| |
| config BR2_powerpc64 |
| bool "PowerPC64 (big endian)" |
| select BR2_ARCH_IS_64 |
| select BR2_ARCH_HAS_MMU_MANDATORY |
| help |
| PowerPC is a RISC architecture created by Apple-IBM-Motorola |
| alliance. Big endian. |
| http://www.power.org/ |
| http://en.wikipedia.org/wiki/Powerpc |
| |
| config BR2_powerpc64le |
| bool "PowerPC64 (little endian)" |
| select BR2_ARCH_IS_64 |
| select BR2_ARCH_HAS_MMU_MANDATORY |
| help |
| PowerPC is a RISC architecture created by Apple-IBM-Motorola |
| alliance. Little endian. |
| http://www.power.org/ |
| http://en.wikipedia.org/wiki/Powerpc |
| |
| config BR2_riscv |
| bool "RISCV" |
| select BR2_ARCH_HAS_MMU_MANDATORY |
| select BR2_ARCH_NEEDS_GCC_AT_LEAST_7 |
| help |
| RISC-V is an open, free Instruction Set Architecture created |
| by the UC Berkeley Architecture Research group and supported |
| and promoted by RISC-V Foundation. |
| https://riscv.org/ |
| https://en.wikipedia.org/wiki/RISC-V |
| |
| config BR2_sh |
| bool "SuperH" |
| select BR2_ARCH_HAS_MMU_OPTIONAL |
| help |
| SuperH (or SH) is a 32-bit reduced instruction set computer |
| (RISC) instruction set architecture (ISA) developed by |
| Hitachi. |
| http://www.hitachi.com/ |
| http://en.wikipedia.org/wiki/SuperH |
| |
| config BR2_sparc |
| bool "SPARC" |
| select BR2_ARCH_HAS_MMU_MANDATORY |
| help |
| SPARC (from Scalable Processor Architecture) is a RISC |
| instruction set architecture (ISA) developed by Sun |
| Microsystems. |
| http://www.oracle.com/sun |
| http://en.wikipedia.org/wiki/Sparc |
| |
| config BR2_sparc64 |
| bool "SPARC64" |
| select BR2_ARCH_IS_64 |
| select BR2_ARCH_HAS_MMU_MANDATORY |
| help |
| SPARC (from Scalable Processor Architecture) is a RISC |
| instruction set architecture (ISA) developed by Sun |
| Microsystems. |
| http://www.oracle.com/sun |
| http://en.wikipedia.org/wiki/Sparc |
| |
| config BR2_x86_64 |
| bool "x86_64" |
| select BR2_ARCH_IS_64 |
| select BR2_ARCH_HAS_MMU_MANDATORY |
| help |
| x86-64 is an extension of the x86 instruction set (Intel i386 |
| architecture compatible microprocessor). |
| http://en.wikipedia.org/wiki/X86_64 |
| |
| config BR2_xtensa |
| bool "Xtensa" |
| # MMU support is set by the subarchitecture file, arch/Config.in.xtensa |
| help |
| Xtensa is a Tensilica processor IP architecture. |
| http://en.wikipedia.org/wiki/Xtensa |
| http://www.tensilica.com/ |
| |
| endchoice |
| |
| # For some architectures or specific cores, our internal toolchain |
| # backend is not suitable (like, missing support in upstream gcc, or |
| # no ChipCo fork exists...) |
| config BR2_ARCH_HAS_NO_TOOLCHAIN_BUILDROOT |
| bool |
| |
| config BR2_ARCH_HAS_TOOLCHAIN_BUILDROOT |
| bool |
| default y if !BR2_ARCH_HAS_NO_TOOLCHAIN_BUILDROOT |
| |
| # The following symbols are selected by the individual |
| # Config.in.$ARCH files |
| config BR2_ARCH_NEEDS_GCC_AT_LEAST_4_8 |
| bool |
| |
| config BR2_ARCH_NEEDS_GCC_AT_LEAST_4_9 |
| bool |
| select BR2_ARCH_NEEDS_GCC_AT_LEAST_4_8 |
| |
| config BR2_ARCH_NEEDS_GCC_AT_LEAST_5 |
| bool |
| select BR2_ARCH_NEEDS_GCC_AT_LEAST_4_9 |
| |
| config BR2_ARCH_NEEDS_GCC_AT_LEAST_6 |
| bool |
| select BR2_ARCH_NEEDS_GCC_AT_LEAST_5 |
| |
| config BR2_ARCH_NEEDS_GCC_AT_LEAST_7 |
| bool |
| select BR2_ARCH_NEEDS_GCC_AT_LEAST_6 |
| |
| config BR2_ARCH_NEEDS_GCC_AT_LEAST_8 |
| bool |
| select BR2_ARCH_NEEDS_GCC_AT_LEAST_7 |
| |
| config BR2_ARCH_NEEDS_GCC_AT_LEAST_9 |
| bool |
| select BR2_ARCH_NEEDS_GCC_AT_LEAST_8 |
| |
| # The following string values are defined by the individual |
| # Config.in.$ARCH files |
| config BR2_ARCH |
| string |
| |
| config BR2_ENDIAN |
| string |
| |
| config BR2_GCC_TARGET_ARCH |
| string |
| |
| config BR2_GCC_TARGET_ABI |
| string |
| |
| config BR2_GCC_TARGET_NAN |
| string |
| |
| config BR2_GCC_TARGET_FP32_MODE |
| string |
| |
| config BR2_GCC_TARGET_CPU |
| string |
| |
| # The value of this option will be passed as --with-fpu=<value> when |
| # building gcc (internal backend) or -mfpu=<value> in the toolchain |
| # wrapper (external toolchain) |
| config BR2_GCC_TARGET_FPU |
| string |
| |
| # The value of this option will be passed as --with-float=<value> when |
| # building gcc (internal backend) or -mfloat-abi=<value> in the toolchain |
| # wrapper (external toolchain) |
| config BR2_GCC_TARGET_FLOAT_ABI |
| string |
| |
| # The value of this option will be passed as --with-mode=<value> when |
| # building gcc (internal backend) or -m<value> in the toolchain |
| # wrapper (external toolchain) |
| config BR2_GCC_TARGET_MODE |
| string |
| |
| # Must be selected by binary formats that support shared libraries. |
| config BR2_BINFMT_SUPPORTS_SHARED |
| bool |
| |
| # Must match the name of the architecture from readelf point of view, |
| # i.e the "Machine:" field of readelf output. See get_machine_name() |
| # in binutils/readelf.c for the list of possible values. |
| config BR2_READELF_ARCH_NAME |
| string |
| |
| # Set up target binary format |
| choice |
| prompt "Target Binary Format" |
| default BR2_BINFMT_ELF if BR2_USE_MMU |
| default BR2_BINFMT_FLAT |
| |
| config BR2_BINFMT_ELF |
| bool "ELF" |
| depends on BR2_USE_MMU |
| select BR2_BINFMT_SUPPORTS_SHARED |
| help |
| ELF (Executable and Linkable Format) is a format for libraries |
| and executables used across different architectures and |
| operating systems. |
| |
| config BR2_BINFMT_FLAT |
| bool "FLAT" |
| depends on !BR2_USE_MMU |
| help |
| FLAT binary is a relatively simple and lightweight executable |
| format based on the original a.out format. It is widely used |
| in environment where no MMU is available. |
| |
| endchoice |
| |
| # Set up flat binary type |
| choice |
| prompt "FLAT Binary type" |
| default BR2_BINFMT_FLAT_ONE |
| depends on BR2_BINFMT_FLAT |
| |
| config BR2_BINFMT_FLAT_ONE |
| bool "One memory region" |
| help |
| All segments are linked into one memory region. |
| |
| config BR2_BINFMT_FLAT_SHARED |
| bool "Shared binary" |
| depends on BR2_m68k |
| # Even though this really generates shared binaries, there is no libdl |
| # and dlopen() cannot be used. So packages that require shared |
| # libraries cannot be built. Therefore, we don't select |
| # BR2_BINFMT_SUPPORTS_SHARED and therefore force BR2_STATIC_LIBS. |
| # Although this adds -static to the compilation, that's not a problem |
| # because the -mid-shared-library option overrides it. |
| help |
| Allow to load and link indiviual FLAT binaries at run time. |
| |
| endchoice |
| |
| if BR2_arcle || BR2_arceb |
| source "arch/Config.in.arc" |
| endif |
| |
| if BR2_arm || BR2_armeb || BR2_aarch64 || BR2_aarch64_be |
| source "arch/Config.in.arm" |
| endif |
| |
| if BR2_csky |
| source "arch/Config.in.csky" |
| endif |
| |
| if BR2_m68k |
| source "arch/Config.in.m68k" |
| endif |
| |
| if BR2_microblazeel || BR2_microblazebe |
| source "arch/Config.in.microblaze" |
| endif |
| |
| if BR2_mips || BR2_mips64 || BR2_mipsel || BR2_mips64el |
| source "arch/Config.in.mips" |
| endif |
| |
| if BR2_nds32 |
| source "arch/Config.in.nds32" |
| endif |
| |
| if BR2_nios2 |
| source "arch/Config.in.nios2" |
| endif |
| |
| if BR2_or1k |
| source "arch/Config.in.or1k" |
| endif |
| |
| if BR2_powerpc || BR2_powerpc64 || BR2_powerpc64le |
| source "arch/Config.in.powerpc" |
| endif |
| |
| if BR2_riscv |
| source "arch/Config.in.riscv" |
| endif |
| |
| if BR2_sh |
| source "arch/Config.in.sh" |
| endif |
| |
| if BR2_sparc || BR2_sparc64 |
| source "arch/Config.in.sparc" |
| endif |
| |
| if BR2_i386 || BR2_x86_64 |
| source "arch/Config.in.x86" |
| endif |
| |
| if BR2_xtensa |
| source "arch/Config.in.xtensa" |
| endif |
| |
| endmenu # Target options |
