1# ARM Architecture 2 3# 4# ARM has 32-bit(Aarch32) and 64-bit(Aarch64) implementations 5# 6config ARCH_ARM_AARCH32 7 bool 8 select ARCH_ARM 9 help 10 32-bit ARM architecture implementations, Except the M-profile. 11 It is not limited to ARMv7-A but also ARMv7-R, ARMv8-A 32-bit and etc. 12 13# 14# Architecture Versions 15# 16config ARCH_ARM_V7A 17 bool 18 19config ARCH_ARM_VER 20 string 21 default "armv7-a" if ARCH_ARM_V7A 22 23# 24# VFP Hardware 25# 26config ARCH_FPU_VFP_V3 27 bool 28 help 29 An optional extension to the Arm, Thumb, and ThumbEE instruction sets in the ARMv7-A and ARMv7-R profiles. 30 VFPv3U is a variant of VFPv3 that supports the trapping of floating-point exceptions to support code. 31 32config ARCH_FPU_VFP_V4 33 bool 34 help 35 An optional extension to the Arm, Thumb, and ThumbEE instruction sets in the ARMv7-A and ARMv7-R profiles. 36 VFPv4U is a variant of VFPv4 that supports the trapping of floating-point exceptions to support code. 37 VFPv4 and VFPv4U add both the Half-precision Extension and the fused multiply-add instructions to the features of VFPv3. 38 39config ARCH_FPU_VFP_D16 40 bool 41 depends on ARCH_ARM_AARCH32 42 help 43 VPU implemented with 16 doubleword registers (16 x 64-bit). 44 45config ARCH_FPU_VFP_D32 46 bool 47 depends on ARCH_ARM_AARCH32 48 help 49 VPU implemented with 32 doubleword registers (32 x 64-bit). 50 51config ARCH_FPU_VFP_NEON 52 bool 53 help 54 Advanced SIMD extension (NEON) support. 55 56config ARCH_FPU 57 string 58 default "vfpv3" if ARCH_FPU_VFP_V3 && ARCH_FPU_VFP_D32 59 default "vfpv3-d16" if ARCH_FPU_VFP_V3 && ARCH_FPU_VFP_D16 60 default "neon-vfpv4" if ARCH_FPU_VFP_V4 && ARCH_FPU_VFP_D32 && ARCH_FPU_VFP_NEON 61 default "vfpv4" if ARCH_FPU_VFP_V4 && ARCH_FPU_VFP_D32 62 default "vfpv4-d16" if ARCH_FPU_VFP_V4 && ARCH_FPU_VFP_D16 63 64# 65# Supported Processor Cores 66# 67config ARCH_CORTEX_A7 68 bool 69 select ARCH_ARM_V7A 70 select ARCH_ARM_AARCH32 71 select ARCH_FPU_VFP_V4 72 select ARCH_FPU_VFP_D32 73 select ARCH_FPU_VFP_NEON 74 75config ARCH_CPU 76 string 77 default "cortex-a7" if ARCH_CORTEX_A7 78 79# 80# Supported GIC version 81# 82 83choice 84 prompt "GIC version" 85 default ARCH_GIC_V2 86 help 87 Interrupt Controller. 88 89config ARCH_GIC_V2 90 bool "GIC Version 2" 91 help 92 This GIC(General Interrupt Controller) version 2 driver is compatatble with 93 GIC version 1 and version 2. 94 95config ARCH_GIC_V3 96 bool "GIC Version 3" 97 depends on ARCH_ARM_V8A || ARCH_ARM_V8R 98 help 99 General Interrupt Controller version 3. 100 101endchoice 102 103 104