kumquat-buildroot/arch/Config.in
Thomas Petazzoni d04ea6e4e8 arch: add BR2_READELF_ARCH_NAME hidden config option
This config option corresponds to the string returned by readelf for
the "Machine" field of the ELF header. It will be used to check if the
architecture of binaries built by Buildroot match the target
architecture.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
2017-03-20 22:22:17 +01:00

431 lines
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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
config BR2_ARCH_HAS_FDPIC_SUPPORT
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_bfin
bool "Blackfin"
select BR2_ARCH_HAS_FDPIC_SUPPORT
help
The Blackfin is a family of 16 or 32-bit microprocessors developed,
manufactured and marketed by Analog Devices.
http://www.analog.com/
http://en.wikipedia.org/wiki/Blackfin
config BR2_csky
bool "csky"
select BR2_ARCH_HAS_MMU_MANDATORY
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_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_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
# 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_CPU
string
config BR2_GCC_TARGET_CPU_REVISION
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_FDPIC if BR2_ARCH_HAS_FDPIC_SUPPORT
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_FDPIC
bool "FDPIC"
depends on BR2_ARCH_HAS_FDPIC_SUPPORT
select BR2_BINFMT_SUPPORTS_SHARED
help
ELF FDPIC binaries are based on ELF, but allow the individual load
segments of a binary to be located in memory independently of each
other. This makes this format ideal for use in environments where no
MMU is available.
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"
depends on BR2_BINFMT_FLAT
default BR2_BINFMT_FLAT_ONE
config BR2_BINFMT_FLAT_ONE
bool "One memory region"
help
All segments are linked into one memory region.
config BR2_BINFMT_FLAT_SEP_DATA
bool "Separate data and code region"
# this FLAT binary type technically exists on m68k, but fails
# to build numerous packages: due to architecture limitation,
# big functions cannot be built in this mode. They cause build
# failures such as "Tried to convert PC relative branch to
# absolute jump" or "error: value -yyyyy out of range".
depends on BR2_bfin
help
Allow for the data and text segments to be separated and placed in
different regions of memory.
config BR2_BINFMT_FLAT_SHARED
bool "Shared binary"
depends on BR2_m68k || BR2_bfin
# 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_bfin
source "arch/Config.in.bfin"
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_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_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