78 lines
2.1 KiB
Plaintext
78 lines
2.1 KiB
Plaintext
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# ARM Architecture
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#
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# ARM has 32-bit(Aarch32) and 64-bit(Aarch64) implementations
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#
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config ARCH_ARM_AARCH32
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bool
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select ARCH_ARM
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help
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32-bit ARM architecture implementations, Except the M-profile.
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It is not limited to ARMv7-A but also ARMv7-R, ARMv8-A 32-bit and etc.
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#
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# Architecture Versions
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#
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config ARCH_ARM_V7A
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bool
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config ARCH_ARM_VER
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string
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default "armv7-a" if ARCH_ARM_V7A
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#
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# VFP Hardware
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#
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config ARCH_FPU_VFP_V3
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bool
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help
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An optional extension to the Arm, Thumb, and ThumbEE instruction sets in the ARMv7-A and ARMv7-R profiles.
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VFPv3U is a variant of VFPv3 that supports the trapping of floating-point exceptions to support code.
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config ARCH_FPU_VFP_V4
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bool
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help
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An optional extension to the Arm, Thumb, and ThumbEE instruction sets in the ARMv7-A and ARMv7-R profiles.
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VFPv4U is a variant of VFPv4 that supports the trapping of floating-point exceptions to support code.
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VFPv4 and VFPv4U add both the Half-precision Extension and the fused multiply-add instructions to the features of VFPv3.
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config ARCH_FPU_VFP_D16
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bool
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depends on ARCH_ARM_AARCH32
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help
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VPU implemented with 16 doubleword registers (16 x 64-bit).
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config ARCH_FPU_VFP_D32
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bool
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depends on ARCH_ARM_AARCH32
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help
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VPU implemented with 32 doubleword registers (32 x 64-bit).
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config ARCH_FPU_VFP_NEON
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bool
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help
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Advanced SIMD extension (NEON) support.
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config ARCH_FPU
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string
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default "vfpv3" if ARCH_FPU_VFP_V3 && ARCH_FPU_VFP_D32
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default "vfpv3-d16" if ARCH_FPU_VFP_V3 && ARCH_FPU_VFP_D16
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default "neon-vfpv4" if ARCH_FPU_VFP_V4 && ARCH_FPU_VFP_D32 && ARCH_FPU_VFP_NEON
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default "vfpv4" if ARCH_FPU_VFP_V4 && ARCH_FPU_VFP_D32
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default "vfpv4-d16" if ARCH_FPU_VFP_V4 && ARCH_FPU_VFP_D16
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#
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# Supported Processor Cores
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#
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config ARCH_CORTEX_A7
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bool
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select ARCH_ARM_V7A
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select ARCH_ARM_AARCH32
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select ARCH_FPU_VFP_V4
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select ARCH_FPU_VFP_D32
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select ARCH_FPU_VFP_NEON
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config ARCH_CPU
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string
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default "cortex-a7" if ARCH_CORTEX_A7
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