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kumquat-buildroot/arch/Config.in.arm
Thomas De Schampheleire dd8a410eaf core: introduce NORMALIZED_ARCH as non-kernel replacement for KERNEL_ARCH 
The variable 'KERNEL_ARCH' is actually a normalized version of
'ARCH'/'BR2_ARCH'. For example, 'arcle' and 'arceb' both become 'arc', just
as all powerpc variants become 'powerpc'.

It is presumably called 'KERNEL_ARCH' because the Linux kernel is typically
the first place where support for a new architecture is added, and thus is
the entity that defines the normalized name.

However, the term 'KERNEL_ARCH' can also be interpreted as 'the architecture
used by the kernel', which need not be exactly the same as 'the normalized
name for a certain arch'. In particular, for cases where a 64-bit
architecture is running a 64-bit kernel but 32-bit userspace. Examples
include:
    * aarch64 architecture, with aarch64 kernel and 32-bit (ARM) userspace
    * x86_64 architecture, with x86_64 kernel and 32-bit (i386) userspace

In such cases, the 'architecture used by the kernel' needs to refer to the
64-bit name (aarch64, x86_64), whereas all userspace applications need to
refer the, potentially normalized, 32-bit name.

This means that there need to be two different variables:

KERNEL_ARCH:     the architecture used by the kernel
NORMALIZED_ARCH: the normalized name for the current userspace architecture

At this moment, both will actually have the same content. But a subsequent
patch will add basic support for situations described above, in which
KERNEL_ARCH may become overwritten to the 64-bit architecture, while
NORMALIZED_ARCH needs to remain the same (32-bit) case.

This commit replaces use of KERNEL_ARCH where actually the userspace arch is
needed.  Places that use KERNEL_ARCH in combination with building of kernel
modules are not touched.
There may be cases where a package builds both a kernel module as userspace,
in which case it may need to know about both KERNEL_ARCH and
NORMALIZED_ARCH, for the case where they differ. But this is to be fixed on
a per-need basis.

Signed-off-by: Thomas De Schampheleire <thomas.de_schampheleire@nokia.com>
Reviewed-by: Romain Naour <romain.naour@gmail.com>
[Arnout: Also rename BR2_KERNEL_ARCH to BR2_NORMALIZED_ARCH]
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
2022-02-08 21:20:23 +01:00

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# arm cpu features
config BR2_ARM_CPU_HAS_NEON
bool
# for some cores, NEON support is optional
config BR2_ARM_CPU_MAYBE_HAS_NEON
bool
# For some cores, the FPU is optional
config BR2_ARM_CPU_MAYBE_HAS_FPU
bool
config BR2_ARM_CPU_HAS_FPU
bool
# for some cores, VFPv2 is optional
config BR2_ARM_CPU_MAYBE_HAS_VFPV2
bool
select BR2_ARM_CPU_MAYBE_HAS_FPU
config BR2_ARM_CPU_HAS_VFPV2
bool
select BR2_ARM_CPU_HAS_FPU
# for some cores, VFPv3 is optional
config BR2_ARM_CPU_MAYBE_HAS_VFPV3
bool
select BR2_ARM_CPU_MAYBE_HAS_VFPV2
config BR2_ARM_CPU_HAS_VFPV3
bool
select BR2_ARM_CPU_HAS_VFPV2
# for some cores, VFPv4 is optional
config BR2_ARM_CPU_MAYBE_HAS_VFPV4
bool
select BR2_ARM_CPU_MAYBE_HAS_VFPV3
config BR2_ARM_CPU_HAS_VFPV4
bool
select BR2_ARM_CPU_HAS_VFPV3
# FPv4 is always optional
config BR2_ARM_CPU_MAYBE_HAS_FPV4
bool
select BR2_ARM_CPU_MAYBE_HAS_FPU
config BR2_ARM_CPU_HAS_FPV4
bool
select BR2_ARM_CPU_HAS_FPU
# FPv5 is always optional
config BR2_ARM_CPU_MAYBE_HAS_FPV5
bool
select BR2_ARM_CPU_MAYBE_HAS_FPV4
config BR2_ARM_CPU_HAS_FPV5
bool
select BR2_ARM_CPU_HAS_FPV4
config BR2_ARM_CPU_HAS_FP_ARMV8
bool
select BR2_ARM_CPU_HAS_VFPV4
config BR2_ARM_CPU_HAS_ARM
bool
config BR2_ARM_CPU_HAS_THUMB
bool
config BR2_ARM_CPU_HAS_THUMB2
bool
config BR2_ARM_CPU_ARMV4
bool
config BR2_ARM_CPU_ARMV5
bool
config BR2_ARM_CPU_ARMV6
bool
config BR2_ARM_CPU_ARMV7A
bool
config BR2_ARM_CPU_ARMV7M
bool
config BR2_ARM_CPU_ARMV8A
bool
choice
prompt "Target Architecture Variant"
default BR2_cortex_a53 if BR2_ARCH_IS_64
default BR2_arm926t
help
Specific CPU variant to use
if !BR2_ARCH_IS_64
comment "armv4 cores"
config BR2_arm920t
bool "arm920t"
select BR2_ARM_CPU_HAS_ARM
select BR2_ARM_CPU_HAS_THUMB
select BR2_ARM_CPU_ARMV4
select BR2_ARCH_HAS_MMU_OPTIONAL
config BR2_arm922t
bool "arm922t"
select BR2_ARM_CPU_HAS_ARM
select BR2_ARM_CPU_HAS_THUMB
select BR2_ARM_CPU_ARMV4
select BR2_ARCH_HAS_MMU_OPTIONAL
config BR2_fa526
bool "fa526/626"
select BR2_ARM_CPU_HAS_ARM
select BR2_ARM_CPU_ARMV4
select BR2_ARCH_HAS_MMU_OPTIONAL
config BR2_strongarm
bool "strongarm sa110/sa1100"
select BR2_ARM_CPU_HAS_ARM
select BR2_ARM_CPU_ARMV4
select BR2_ARCH_HAS_MMU_OPTIONAL
comment "armv5 cores"
config BR2_arm926t
bool "arm926t"
select BR2_ARM_CPU_HAS_ARM
select BR2_ARM_CPU_MAYBE_HAS_VFPV2
select BR2_ARM_CPU_HAS_THUMB
select BR2_ARM_CPU_ARMV5
select BR2_ARCH_HAS_MMU_OPTIONAL
config BR2_iwmmxt
bool "iwmmxt"
select BR2_ARM_CPU_HAS_ARM
select BR2_ARM_CPU_ARMV5
select BR2_ARCH_HAS_MMU_OPTIONAL
config BR2_xscale
bool "xscale"
select BR2_ARM_CPU_HAS_ARM
select BR2_ARM_CPU_HAS_THUMB
select BR2_ARM_CPU_ARMV5
select BR2_ARCH_HAS_MMU_OPTIONAL
comment "armv6 cores"
config BR2_arm1136j_s
bool "arm1136j-s"
select BR2_ARM_CPU_HAS_ARM
select BR2_ARM_CPU_HAS_THUMB
select BR2_ARM_CPU_ARMV6
select BR2_ARCH_HAS_MMU_OPTIONAL
config BR2_arm1136jf_s
bool "arm1136jf-s"
select BR2_ARM_CPU_HAS_ARM
select BR2_ARM_CPU_HAS_VFPV2
select BR2_ARM_CPU_HAS_THUMB
select BR2_ARM_CPU_ARMV6
select BR2_ARCH_HAS_MMU_OPTIONAL
config BR2_arm1176jz_s
bool "arm1176jz-s"
select BR2_ARM_CPU_HAS_ARM
select BR2_ARM_CPU_HAS_THUMB
select BR2_ARM_CPU_ARMV6
select BR2_ARCH_HAS_MMU_OPTIONAL
config BR2_arm1176jzf_s
bool "arm1176jzf-s"
select BR2_ARM_CPU_HAS_ARM
select BR2_ARM_CPU_HAS_VFPV2
select BR2_ARM_CPU_HAS_THUMB
select BR2_ARM_CPU_ARMV6
select BR2_ARCH_HAS_MMU_OPTIONAL
config BR2_arm11mpcore
bool "mpcore"
select BR2_ARM_CPU_HAS_ARM
select BR2_ARM_CPU_MAYBE_HAS_VFPV2
select BR2_ARM_CPU_HAS_THUMB
select BR2_ARM_CPU_ARMV6
select BR2_ARCH_HAS_MMU_OPTIONAL
comment "armv7a cores"
config BR2_cortex_a5
bool "cortex-A5"
select BR2_ARM_CPU_HAS_ARM
select BR2_ARM_CPU_MAYBE_HAS_NEON
select BR2_ARM_CPU_MAYBE_HAS_VFPV4
select BR2_ARM_CPU_HAS_THUMB2
select BR2_ARM_CPU_ARMV7A
select BR2_ARCH_HAS_MMU_OPTIONAL
config BR2_cortex_a7
bool "cortex-A7"
select BR2_ARM_CPU_HAS_ARM
select BR2_ARM_CPU_HAS_NEON
select BR2_ARM_CPU_HAS_VFPV4
select BR2_ARM_CPU_HAS_THUMB2
select BR2_ARM_CPU_ARMV7A
select BR2_ARCH_HAS_MMU_OPTIONAL
config BR2_cortex_a8
bool "cortex-A8"
select BR2_ARM_CPU_HAS_ARM
select BR2_ARM_CPU_HAS_NEON
select BR2_ARM_CPU_HAS_VFPV3
select BR2_ARM_CPU_HAS_THUMB2
select BR2_ARM_CPU_ARMV7A
select BR2_ARCH_HAS_MMU_OPTIONAL
config BR2_cortex_a9
bool "cortex-A9"
select BR2_ARM_CPU_HAS_ARM
select BR2_ARM_CPU_MAYBE_HAS_NEON
select BR2_ARM_CPU_MAYBE_HAS_VFPV3
select BR2_ARM_CPU_HAS_THUMB2
select BR2_ARM_CPU_ARMV7A
select BR2_ARCH_HAS_MMU_OPTIONAL
config BR2_cortex_a12
bool "cortex-A12"
select BR2_ARM_CPU_HAS_ARM
select BR2_ARM_CPU_HAS_NEON
select BR2_ARM_CPU_HAS_VFPV4
select BR2_ARM_CPU_HAS_THUMB2
select BR2_ARM_CPU_ARMV7A
select BR2_ARCH_HAS_MMU_OPTIONAL
config BR2_cortex_a15
bool "cortex-A15"
select BR2_ARM_CPU_HAS_ARM
select BR2_ARM_CPU_HAS_NEON
select BR2_ARM_CPU_HAS_VFPV4
select BR2_ARM_CPU_HAS_THUMB2
select BR2_ARM_CPU_ARMV7A
select BR2_ARCH_HAS_MMU_OPTIONAL
config BR2_cortex_a15_a7
bool "cortex-A15/A7 big.LITTLE"
select BR2_ARM_CPU_HAS_ARM
select BR2_ARM_CPU_HAS_NEON
select BR2_ARM_CPU_HAS_VFPV4
select BR2_ARM_CPU_HAS_THUMB2
select BR2_ARM_CPU_ARMV7A
select BR2_ARCH_HAS_MMU_OPTIONAL
select BR2_ARCH_NEEDS_GCC_AT_LEAST_4_9
config BR2_cortex_a17
bool "cortex-A17"
select BR2_ARM_CPU_HAS_ARM
select BR2_ARM_CPU_HAS_NEON
select BR2_ARM_CPU_HAS_VFPV4
select BR2_ARM_CPU_HAS_THUMB2
select BR2_ARM_CPU_ARMV7A
select BR2_ARCH_HAS_MMU_OPTIONAL
select BR2_ARCH_NEEDS_GCC_AT_LEAST_5
config BR2_cortex_a17_a7
bool "cortex-A17/A7 big.LITTLE"
select BR2_ARM_CPU_HAS_ARM
select BR2_ARM_CPU_HAS_NEON
select BR2_ARM_CPU_HAS_VFPV4
select BR2_ARM_CPU_HAS_THUMB2
select BR2_ARM_CPU_ARMV7A
select BR2_ARCH_HAS_MMU_OPTIONAL
select BR2_ARCH_NEEDS_GCC_AT_LEAST_5
config BR2_pj4
bool "pj4"
select BR2_ARM_CPU_HAS_ARM
select BR2_ARM_CPU_HAS_VFPV3
select BR2_ARM_CPU_ARMV7A
select BR2_ARCH_HAS_MMU_OPTIONAL
comment "armv7m cores"
config BR2_cortex_m3
bool "cortex-M3"
select BR2_ARM_CPU_HAS_THUMB2
select BR2_ARM_CPU_ARMV7M
config BR2_cortex_m4
bool "cortex-M4"
select BR2_ARM_CPU_HAS_THUMB2
select BR2_ARM_CPU_MAYBE_HAS_FPV4
select BR2_ARM_CPU_ARMV7M
config BR2_cortex_m7
bool "cortex-M7"
select BR2_ARM_CPU_HAS_THUMB2
select BR2_ARM_CPU_MAYBE_HAS_FPV5
select BR2_ARM_CPU_ARMV7M
select BR2_ARCH_NEEDS_GCC_AT_LEAST_5
endif # !BR2_ARCH_IS_64
comment "armv8 cores"
config BR2_cortex_a32
bool "cortex-A32"
depends on !BR2_ARCH_IS_64
select BR2_ARM_CPU_HAS_ARM
select BR2_ARM_CPU_HAS_NEON
select BR2_ARM_CPU_HAS_THUMB2
select BR2_ARM_CPU_HAS_FP_ARMV8
select BR2_ARM_CPU_ARMV8A
select BR2_ARCH_HAS_MMU_OPTIONAL
select BR2_ARCH_NEEDS_GCC_AT_LEAST_6
config BR2_cortex_a35
bool "cortex-A35"
select BR2_ARM_CPU_HAS_ARM if !BR2_ARCH_IS_64
select BR2_ARM_CPU_HAS_NEON if !BR2_ARCH_IS_64
select BR2_ARM_CPU_HAS_THUMB2 if !BR2_ARCH_IS_64
select BR2_ARM_CPU_HAS_FP_ARMV8
select BR2_ARM_CPU_ARMV8A
select BR2_ARCH_HAS_MMU_OPTIONAL
select BR2_ARCH_NEEDS_GCC_AT_LEAST_6
config BR2_cortex_a53
bool "cortex-A53"
select BR2_ARM_CPU_HAS_ARM if !BR2_ARCH_IS_64
select BR2_ARM_CPU_HAS_NEON if !BR2_ARCH_IS_64
select BR2_ARM_CPU_HAS_THUMB2 if !BR2_ARCH_IS_64
select BR2_ARM_CPU_HAS_FP_ARMV8
select BR2_ARM_CPU_ARMV8A
select BR2_ARCH_HAS_MMU_OPTIONAL
config BR2_cortex_a57
bool "cortex-A57"
select BR2_ARM_CPU_HAS_ARM if !BR2_ARCH_IS_64
select BR2_ARM_CPU_HAS_NEON if !BR2_ARCH_IS_64
select BR2_ARM_CPU_HAS_THUMB2 if !BR2_ARCH_IS_64
select BR2_ARM_CPU_HAS_FP_ARMV8
select BR2_ARM_CPU_ARMV8A
select BR2_ARCH_HAS_MMU_OPTIONAL
config BR2_cortex_a57_a53
bool "cortex-A57/A53 big.LITTLE"
select BR2_ARM_CPU_HAS_ARM if !BR2_ARCH_IS_64
select BR2_ARM_CPU_HAS_NEON if !BR2_ARCH_IS_64
select BR2_ARM_CPU_HAS_THUMB2 if !BR2_ARCH_IS_64
select BR2_ARM_CPU_HAS_FP_ARMV8
select BR2_ARM_CPU_ARMV8A
select BR2_ARCH_HAS_MMU_OPTIONAL
select BR2_ARCH_NEEDS_GCC_AT_LEAST_6
config BR2_cortex_a72
bool "cortex-A72"
select BR2_ARM_CPU_HAS_ARM if !BR2_ARCH_IS_64
select BR2_ARM_CPU_HAS_NEON if !BR2_ARCH_IS_64
select BR2_ARM_CPU_HAS_THUMB2 if !BR2_ARCH_IS_64
select BR2_ARM_CPU_HAS_FP_ARMV8
select BR2_ARM_CPU_ARMV8A
select BR2_ARCH_HAS_MMU_OPTIONAL
select BR2_ARCH_NEEDS_GCC_AT_LEAST_5
config BR2_cortex_a72_a53
bool "cortex-A72/A53 big.LITTLE"
select BR2_ARM_CPU_HAS_ARM if !BR2_ARCH_IS_64
select BR2_ARM_CPU_HAS_NEON if !BR2_ARCH_IS_64
select BR2_ARM_CPU_HAS_THUMB2 if !BR2_ARCH_IS_64
select BR2_ARM_CPU_HAS_FP_ARMV8
select BR2_ARM_CPU_ARMV8A
select BR2_ARCH_HAS_MMU_OPTIONAL
select BR2_ARCH_NEEDS_GCC_AT_LEAST_6
config BR2_cortex_a73
bool "cortex-A73"
select BR2_ARM_CPU_HAS_ARM if !BR2_ARCH_IS_64
select BR2_ARM_CPU_HAS_NEON if !BR2_ARCH_IS_64
select BR2_ARM_CPU_HAS_THUMB2 if !BR2_ARCH_IS_64
select BR2_ARM_CPU_HAS_FP_ARMV8
select BR2_ARM_CPU_ARMV8A
select BR2_ARCH_HAS_MMU_OPTIONAL
select BR2_ARCH_NEEDS_GCC_AT_LEAST_7
config BR2_cortex_a73_a35
bool "cortex-A73/A35 big.LITTLE"
select BR2_ARM_CPU_HAS_ARM if !BR2_ARCH_IS_64
select BR2_ARM_CPU_HAS_NEON if !BR2_ARCH_IS_64
select BR2_ARM_CPU_HAS_THUMB2 if !BR2_ARCH_IS_64
select BR2_ARM_CPU_HAS_FP_ARMV8
select BR2_ARM_CPU_ARMV8A
select BR2_ARCH_HAS_MMU_OPTIONAL
select BR2_ARCH_NEEDS_GCC_AT_LEAST_7
config BR2_cortex_a73_a53
bool "cortex-A73/A53 big.LITTLE"
select BR2_ARM_CPU_HAS_ARM if !BR2_ARCH_IS_64
select BR2_ARM_CPU_HAS_NEON if !BR2_ARCH_IS_64
select BR2_ARM_CPU_HAS_THUMB2 if !BR2_ARCH_IS_64
select BR2_ARM_CPU_HAS_FP_ARMV8
select BR2_ARM_CPU_ARMV8A
select BR2_ARCH_HAS_MMU_OPTIONAL
select BR2_ARCH_NEEDS_GCC_AT_LEAST_7
config BR2_emag
bool "emag"
depends on BR2_ARCH_IS_64
select BR2_ARM_CPU_HAS_FP_ARMV8
select BR2_ARM_CPU_ARMV8A
select BR2_ARCH_HAS_MMU_OPTIONAL
select BR2_ARCH_NEEDS_GCC_AT_LEAST_9
config BR2_exynos_m1
bool "exynos-m1"
select BR2_ARM_CPU_HAS_ARM if !BR2_ARCH_IS_64
select BR2_ARM_CPU_HAS_NEON if !BR2_ARCH_IS_64
select BR2_ARM_CPU_HAS_THUMB2 if !BR2_ARCH_IS_64
select BR2_ARM_CPU_HAS_FP_ARMV8
select BR2_ARM_CPU_ARMV8A
select BR2_ARCH_HAS_MMU_OPTIONAL
select BR2_ARCH_NEEDS_GCC_AT_LEAST_5
config BR2_falkor
bool "falkor"
depends on BR2_ARCH_IS_64
select BR2_ARM_CPU_HAS_FP_ARMV8
select BR2_ARM_CPU_ARMV8A
select BR2_ARCH_HAS_MMU_OPTIONAL
select BR2_ARCH_NEEDS_GCC_AT_LEAST_7
config BR2_phecda
bool "phecda"
depends on BR2_ARCH_IS_64
select BR2_ARM_CPU_HAS_FP_ARMV8
select BR2_ARM_CPU_ARMV8A
select BR2_ARCH_HAS_MMU_OPTIONAL
select BR2_ARCH_NEEDS_GCC_AT_LEAST_9
config BR2_qdf24xx
bool "qdf24xx"
depends on BR2_ARCH_IS_64
select BR2_ARM_CPU_HAS_FP_ARMV8
select BR2_ARM_CPU_ARMV8A
select BR2_ARCH_HAS_MMU_OPTIONAL
select BR2_ARCH_NEEDS_GCC_AT_LEAST_6
config BR2_thunderx
bool "thunderx (aka octeontx)"
depends on BR2_ARCH_IS_64
select BR2_ARM_CPU_HAS_FP_ARMV8
select BR2_ARM_CPU_ARMV8A
select BR2_ARCH_HAS_MMU_OPTIONAL
select BR2_ARCH_NEEDS_GCC_AT_LEAST_5
config BR2_thunderxt81
bool "thunderxt81 (aka octeontx81)"
depends on BR2_ARCH_IS_64
select BR2_ARM_CPU_HAS_FP_ARMV8
select BR2_ARM_CPU_ARMV8A
select BR2_ARCH_HAS_MMU_OPTIONAL
select BR2_ARCH_NEEDS_GCC_AT_LEAST_7
config BR2_thunderxt83
bool "thunderxt83 (aka octeontx83)"
depends on BR2_ARCH_IS_64
select BR2_ARM_CPU_HAS_FP_ARMV8
select BR2_ARM_CPU_ARMV8A
select BR2_ARCH_HAS_MMU_OPTIONAL
select BR2_ARCH_NEEDS_GCC_AT_LEAST_7
config BR2_thunderxt88
bool "thunderxt88"
depends on BR2_ARCH_IS_64
select BR2_ARM_CPU_HAS_FP_ARMV8
select BR2_ARM_CPU_ARMV8A
select BR2_ARCH_HAS_MMU_OPTIONAL
select BR2_ARCH_NEEDS_GCC_AT_LEAST_7
config BR2_thunderxt88p1
bool "thunderxt88p1"
depends on BR2_ARCH_IS_64
select BR2_ARM_CPU_HAS_FP_ARMV8
select BR2_ARM_CPU_ARMV8A
select BR2_ARCH_HAS_MMU_OPTIONAL
select BR2_ARCH_NEEDS_GCC_AT_LEAST_7
config BR2_xgene1
bool "xgene1"
select BR2_ARM_CPU_HAS_ARM if !BR2_ARCH_IS_64
select BR2_ARM_CPU_HAS_NEON if !BR2_ARCH_IS_64
select BR2_ARM_CPU_HAS_THUMB2 if !BR2_ARCH_IS_64
select BR2_ARM_CPU_HAS_FP_ARMV8
select BR2_ARM_CPU_ARMV8A
select BR2_ARCH_HAS_MMU_OPTIONAL
select BR2_ARCH_NEEDS_GCC_AT_LEAST_5
comment "armv8.1a cores"
config BR2_thunderx2t99
bool "thunderx2t99"
depends on BR2_ARCH_IS_64
select BR2_ARM_CPU_HAS_FP_ARMV8
select BR2_ARM_CPU_ARMV8A
select BR2_ARCH_HAS_MMU_OPTIONAL
select BR2_ARCH_NEEDS_GCC_AT_LEAST_7
config BR2_thunderx2t99p1
bool "thunderx2t99p1"
depends on BR2_ARCH_IS_64
select BR2_ARM_CPU_HAS_FP_ARMV8
select BR2_ARM_CPU_ARMV8A
select BR2_ARCH_HAS_MMU_OPTIONAL
select BR2_ARCH_NEEDS_GCC_AT_LEAST_7
config BR2_vulcan
bool "vulcan"
depends on BR2_ARCH_IS_64
select BR2_ARM_CPU_HAS_FP_ARMV8
select BR2_ARM_CPU_ARMV8A
select BR2_ARCH_HAS_MMU_OPTIONAL
select BR2_ARCH_NEEDS_GCC_AT_LEAST_7
comment "armv8.2a cores"
config BR2_cortex_a55
bool "cortex-A55"
depends on BR2_ARCH_IS_64
select BR2_ARM_CPU_HAS_FP_ARMV8
select BR2_ARM_CPU_ARMV8A
select BR2_ARCH_HAS_MMU_OPTIONAL
select BR2_ARCH_NEEDS_GCC_AT_LEAST_8
config BR2_cortex_a75
bool "cortex-A75"
depends on BR2_ARCH_IS_64
select BR2_ARM_CPU_HAS_FP_ARMV8
select BR2_ARM_CPU_ARMV8A
select BR2_ARCH_HAS_MMU_OPTIONAL
select BR2_ARCH_NEEDS_GCC_AT_LEAST_8
config BR2_cortex_a75_a55
bool "cortex-A75/A55 big.LITTLE"
depends on BR2_ARCH_IS_64
select BR2_ARM_CPU_HAS_FP_ARMV8
select BR2_ARM_CPU_ARMV8A
select BR2_ARCH_HAS_MMU_OPTIONAL
select BR2_ARCH_NEEDS_GCC_AT_LEAST_8
config BR2_cortex_a76
bool "cortex-A76"
select BR2_ARM_CPU_HAS_ARM if !BR2_ARCH_IS_64
select BR2_ARM_CPU_HAS_NEON if !BR2_ARCH_IS_64
select BR2_ARM_CPU_HAS_THUMB2 if !BR2_ARCH_IS_64
select BR2_ARM_CPU_HAS_FP_ARMV8
select BR2_ARM_CPU_ARMV8A
select BR2_ARCH_HAS_MMU_OPTIONAL
select BR2_ARCH_NEEDS_GCC_AT_LEAST_9
config BR2_cortex_a76_a55
bool "cortex-A76/A55 big.LITTLE"
select BR2_ARM_CPU_HAS_ARM if !BR2_ARCH_IS_64
select BR2_ARM_CPU_HAS_NEON if !BR2_ARCH_IS_64
select BR2_ARM_CPU_HAS_THUMB2 if !BR2_ARCH_IS_64
select BR2_ARM_CPU_HAS_FP_ARMV8
select BR2_ARM_CPU_ARMV8A
select BR2_ARCH_HAS_MMU_OPTIONAL
select BR2_ARCH_NEEDS_GCC_AT_LEAST_9
config BR2_neoverse_n1
bool "neoverse-N1 (aka ares)"
select BR2_ARM_CPU_HAS_ARM if !BR2_ARCH_IS_64
select BR2_ARM_CPU_HAS_NEON if !BR2_ARCH_IS_64
select BR2_ARM_CPU_HAS_THUMB2 if !BR2_ARCH_IS_64
select BR2_ARM_CPU_HAS_FP_ARMV8
select BR2_ARM_CPU_ARMV8A
select BR2_ARCH_HAS_MMU_OPTIONAL
select BR2_ARCH_NEEDS_GCC_AT_LEAST_9
config BR2_tsv110
bool "tsv110"
depends on BR2_ARCH_IS_64
select BR2_ARM_CPU_HAS_FP_ARMV8
select BR2_ARM_CPU_ARMV8A
select BR2_ARCH_HAS_MMU_OPTIONAL
select BR2_ARCH_NEEDS_GCC_AT_LEAST_9
comment "armv8.4a cores"
config BR2_saphira
bool "saphira"
depends on BR2_ARCH_IS_64
select BR2_ARM_CPU_HAS_FP_ARMV8
select BR2_ARM_CPU_ARMV8A
select BR2_ARCH_HAS_MMU_OPTIONAL
select BR2_ARCH_NEEDS_GCC_AT_LEAST_8
endchoice
config BR2_ARM_ENABLE_NEON
bool "Enable NEON SIMD extension support"
depends on BR2_ARM_CPU_MAYBE_HAS_NEON
select BR2_ARM_CPU_HAS_NEON
help
For some CPU cores, the NEON SIMD extension is optional.
Select this option if you are certain your particular
implementation has NEON support and you want to use it.
config BR2_ARM_ENABLE_VFP
bool "Enable VFP extension support"
depends on BR2_ARM_CPU_MAYBE_HAS_FPU
select BR2_ARM_CPU_HAS_FPV5 if BR2_ARM_CPU_MAYBE_HAS_FPV5
select BR2_ARM_CPU_HAS_FPV4 if BR2_ARM_CPU_MAYBE_HAS_FPV4
select BR2_ARM_CPU_HAS_VFPV4 if BR2_ARM_CPU_MAYBE_HAS_VFPV4
select BR2_ARM_CPU_HAS_VFPV3 if BR2_ARM_CPU_MAYBE_HAS_VFPV3
select BR2_ARM_CPU_HAS_VFPV2 if BR2_ARM_CPU_MAYBE_HAS_VFPV2
help
For some CPU cores, the VFP extension is optional. Select
this option if you are certain your particular
implementation has VFP support and you want to use it.
choice
prompt "Target ABI"
default BR2_ARM_EABIHF if BR2_ARM_CPU_HAS_FPU
default BR2_ARM_EABI
depends on BR2_arm || BR2_armeb
help
Application Binary Interface to use. The Application Binary
Interface describes the calling conventions (how arguments
are passed to functions, how the return value is passed, how
system calls are made, etc.).
config BR2_ARM_EABI
bool "EABI"
help
The EABI is currently the standard ARM ABI, which is used in
most projects. It supports both the 'soft' floating point
model (in which floating point instructions are emulated in
software) and the 'softfp' floating point model (in which
floating point instructions are executed using an hardware
floating point unit, but floating point arguments to
functions are passed in integer registers).
The 'softfp' floating point model is link-compatible with
the 'soft' floating point model, i.e you can link a library
built 'soft' with some other code built 'softfp'.
However, passing the floating point arguments in integer
registers is a bit inefficient, so if your ARM processor has
a floating point unit, and you don't have pre-compiled
'soft' or 'softfp' code, using the EABIhf ABI will provide
better floating point performances.
If your processor does not have a floating point unit, then
you must use this ABI.
config BR2_ARM_EABIHF
bool "EABIhf"
depends on BR2_ARM_CPU_HAS_FPU
help
The EABIhf is an extension of EABI which supports the 'hard'
floating point model. This model uses the floating point
unit to execute floating point instructions, and passes
floating point arguments in floating point registers.
It is more efficient than EABI for floating point related
workload. However, it does not allow to link against code
that has been pre-built for the 'soft' or 'softfp' floating
point models.
If your processor has a floating point unit, and you don't
depend on existing pre-compiled code, this option is most
likely the best choice.
endchoice
choice
prompt "Floating point strategy"
default BR2_ARM_FPU_FP_ARMV8 if BR2_ARM_CPU_HAS_FP_ARMV8
default BR2_ARM_FPU_FPV5D16 if BR2_ARM_CPU_HAS_FPV5
default BR2_ARM_FPU_FPV4D16 if BR2_ARM_CPU_HAS_FPV4
default BR2_ARM_FPU_VFPV4D16 if BR2_ARM_CPU_HAS_VFPV4
default BR2_ARM_FPU_VFPV3D16 if BR2_ARM_CPU_HAS_VFPV3
default BR2_ARM_FPU_VFPV2 if BR2_ARM_CPU_HAS_VFPV2
default BR2_ARM_SOFT_FLOAT if !BR2_ARM_CPU_HAS_FPU
config BR2_ARM_SOFT_FLOAT
bool "Soft float"
depends on BR2_ARM_EABI
select BR2_SOFT_FLOAT
help
This option allows to use software emulated floating
point. It should be used for ARM cores that do not include a
Vector Floating Point unit, such as ARMv5 cores (ARM926 for
example) or certain ARMv6 cores.
config BR2_ARM_FPU_VFPV2
bool "VFPv2"
depends on BR2_ARM_CPU_HAS_VFPV2
help
This option allows to use the VFPv2 floating point unit, as
available in some ARMv5 processors (ARM926EJ-S) and some
ARMv6 processors (ARM1136JF-S, ARM1176JZF-S and ARM11
MPCore).
Note that this option is also safe to use for newer cores
such as Cortex-A, because the VFPv3 and VFPv4 units are
backward compatible with VFPv2.
config BR2_ARM_FPU_VFPV3
bool "VFPv3"
depends on BR2_ARM_CPU_HAS_VFPV3
help
This option allows to use the VFPv3 floating point unit, as
available in some ARMv7 processors (Cortex-A{8, 9}). This
option requires a VFPv3 unit that has 32 double-precision
registers, which is not necessarily the case in all SOCs
based on Cortex-A{8, 9}. If you're unsure, use VFPv3-D16
instead, which is guaranteed to work on all Cortex-A{8, 9}.
Note that this option is also safe to use for newer cores
that have a VFPv4 unit, because VFPv4 is backward compatible
with VFPv3. They must of course also have 32
double-precision registers.
config BR2_ARM_FPU_VFPV3D16
bool "VFPv3-D16"
depends on BR2_ARM_CPU_HAS_VFPV3
help
This option allows to use the VFPv3 floating point unit, as
available in some ARMv7 processors (Cortex-A{8, 9}). This
option requires a VFPv3 unit that has 16 double-precision
registers, which is generally the case in all SOCs based on
Cortex-A{8, 9}, even though VFPv3 is technically optional on
Cortex-A9. This is the safest option for those cores.
Note that this option is also safe to use for newer cores
such that have a VFPv4 unit, because the VFPv4 is backward
compatible with VFPv3.
config BR2_ARM_FPU_VFPV4
bool "VFPv4"
depends on BR2_ARM_CPU_HAS_VFPV4
help
This option allows to use the VFPv4 floating point unit, as
available in some ARMv7 processors (Cortex-A{5, 7, 12,
15}). This option requires a VFPv4 unit that has 32
double-precision registers, which is not necessarily the
case in all SOCs based on Cortex-A{5, 7, 12, 15}. If you're
unsure, you should probably use VFPv4-D16 instead.
Note that if you want binary code that works on all ARMv7
cores, including the earlier Cortex-A{8, 9}, you should
instead select VFPv3.
config BR2_ARM_FPU_VFPV4D16
bool "VFPv4-D16"
depends on BR2_ARM_CPU_HAS_VFPV4
help
This option allows to use the VFPv4 floating point unit, as
available in some ARMv7 processors (Cortex-A{5, 7, 12,
15}). This option requires a VFPv4 unit that has 16
double-precision registers, which is always available on
Cortex-A12 and Cortex-A15, but optional on Cortex-A5 and
Cortex-A7.
Note that if you want binary code that works on all ARMv7
cores, including the earlier Cortex-A{8, 9}, you should
instead select VFPv3-D16.
config BR2_ARM_FPU_NEON
bool "NEON"
depends on BR2_ARM_CPU_HAS_NEON
help
This option allows to use the NEON SIMD unit, as available
in some ARMv7 processors, as a floating-point unit. It
should however be noted that using NEON for floating point
operations doesn't provide a complete compatibility with the
IEEE 754.
config BR2_ARM_FPU_NEON_VFPV4
bool "NEON/VFPv4"
depends on BR2_ARM_CPU_HAS_VFPV4
depends on BR2_ARM_CPU_HAS_NEON
help
This option allows to use both the VFPv4 and the NEON SIMD
units for floating point operations. Note that some ARMv7
cores do not necessarily have VFPv4 and/or NEON support, for
example on Cortex-A5 and Cortex-A7, support for VFPv4 and
NEON is optional.
config BR2_ARM_FPU_FPV4D16
bool "FPv4-D16"
depends on BR2_ARM_CPU_HAS_FPV4
help
This option allows to use the FPv4-SP (single precision)
floating point unit, as available in some ARMv7m processors
(Cortex-M4).
config BR2_ARM_FPU_FPV5D16
bool "FPv5-D16"
depends on BR2_ARM_CPU_HAS_FPV5
select BR2_ARCH_NEEDS_GCC_AT_LEAST_5
help
This option allows to use the FPv5-SP (single precision)
floating point unit, as available in some ARMv7m processors
(Cortex-M7).
Note that if you want binary code that works on the earlier
Cortex-M4, you should instead select FPv4-D16.
config BR2_ARM_FPU_FPV5DPD16
bool "FPv5-DP-D16"
depends on BR2_ARM_CPU_HAS_FPV5
select BR2_ARCH_NEEDS_GCC_AT_LEAST_5
help
This option allows to use the FPv5-DP (double precision)
floating point unit, as available in some ARMv7m processors
(Cortex-M7).
Note that if you want binary code that works on the earlier
Cortex-M4, you should instead select FPv4-D16.
config BR2_ARM_FPU_FP_ARMV8
bool "FP-ARMv8"
depends on BR2_ARM_CPU_HAS_FP_ARMV8
help
This option allows to use the ARMv8 floating point unit.
config BR2_ARM_FPU_NEON_FP_ARMV8
bool "NEON/FP-ARMv8"
depends on BR2_ARM_CPU_HAS_FP_ARMV8
depends on BR2_ARM_CPU_HAS_NEON
help
This option allows to use both the ARMv8 floating point unit
and the NEON SIMD unit for floating point operations.
endchoice
choice
prompt "ARM instruction set"
depends on BR2_arm || BR2_armeb
config BR2_ARM_INSTRUCTIONS_ARM
bool "ARM"
depends on BR2_ARM_CPU_HAS_ARM
help
This option instructs the compiler to generate regular ARM
instructions, that are all 32 bits wide.
config BR2_ARM_INSTRUCTIONS_THUMB
bool "Thumb"
depends on BR2_ARM_CPU_HAS_THUMB
# Thumb-1 and VFP are not compatible
depends on BR2_ARM_SOFT_FLOAT
help
This option instructions the compiler to generate Thumb
instructions, which allows to mix 16 bits instructions and
32 bits instructions. This generally provides a much smaller
compiled binary size.
comment "Thumb1 is not compatible with VFP"
depends on BR2_ARM_CPU_HAS_THUMB
depends on !BR2_ARM_SOFT_FLOAT
config BR2_ARM_INSTRUCTIONS_THUMB2
bool "Thumb2"
depends on BR2_ARM_CPU_HAS_THUMB2
help
This option instructions the compiler to generate Thumb2
instructions, which allows to mix 16 bits instructions and
32 bits instructions. This generally provides a much smaller
compiled binary size.
endchoice
config BR2_ARCH
default "arm" if BR2_arm
default "armeb" if BR2_armeb
default "aarch64" if BR2_aarch64
default "aarch64_be" if BR2_aarch64_be
config BR2_NORMALIZED_ARCH
default "arm" if BR2_arm || BR2_armeb
default "arm64" if BR2_aarch64 || BR2_aarch64_be
config BR2_ENDIAN
default "LITTLE" if (BR2_arm || BR2_aarch64)
default "BIG" if (BR2_armeb || BR2_aarch64_be)
config BR2_GCC_TARGET_CPU
# armv4
default "arm920t" if BR2_arm920t
default "arm922t" if BR2_arm922t
default "fa526" if BR2_fa526
default "strongarm" if BR2_strongarm
# armv5
default "arm926ej-s" if BR2_arm926t
default "iwmmxt" if BR2_iwmmxt
default "xscale" if BR2_xscale
# armv6
default "arm1136j-s" if BR2_arm1136j_s
default "arm1136jf-s" if BR2_arm1136jf_s
default "arm1176jz-s" if BR2_arm1176jz_s
default "arm1176jzf-s" if BR2_arm1176jzf_s
default "mpcore" if BR2_arm11mpcore && BR2_ARM_CPU_HAS_VFPV2
default "mpcorenovfp" if BR2_arm11mpcore
# armv7a
default "cortex-a5" if BR2_cortex_a5
default "cortex-a7" if BR2_cortex_a7
default "cortex-a8" if BR2_cortex_a8
default "cortex-a9" if BR2_cortex_a9
default "cortex-a12" if BR2_cortex_a12
default "cortex-a15" if BR2_cortex_a15
default "cortex-a15.cortex-a7" if BR2_cortex_a15_a7
default "cortex-a17" if BR2_cortex_a17
default "cortex-a17.cortex-a7" if BR2_cortex_a17_a7
default "marvell-pj4" if BR2_pj4
# armv7m
default "cortex-m3" if BR2_cortex_m3
default "cortex-m4" if BR2_cortex_m4
default "cortex-m7" if BR2_cortex_m7
# armv8a
default "cortex-a32" if BR2_cortex_a32
default "cortex-a35" if BR2_cortex_a35
default "cortex-a53" if BR2_cortex_a53
default "cortex-a57" if BR2_cortex_a57
default "cortex-a57.cortex-a53" if BR2_cortex_a57_a53
default "cortex-a72" if BR2_cortex_a72
default "cortex-a72.cortex-a53" if BR2_cortex_a72_a53
default "cortex-a73" if BR2_cortex_a73
default "cortex-a73.cortex-a35" if BR2_cortex_a73_a35
default "cortex-a73.cortex-a53" if BR2_cortex_a73_a53
default "emag" if BR2_emag
default "exynos-m1" if BR2_exynos_m1
default "falkor" if BR2_falkor
default "phecda" if BR2_phecda
default "qdf24xx" if BR2_qdf24xx
default "thunderx" if BR2_thunderx && !BR2_TOOLCHAIN_GCC_AT_LEAST_9
default "octeontx" if BR2_thunderx && BR2_TOOLCHAIN_GCC_AT_LEAST_9
default "thunderxt81" if BR2_thunderxt81 && !BR2_TOOLCHAIN_GCC_AT_LEAST_9
default "octeontx81" if BR2_thunderxt81 && BR2_TOOLCHAIN_GCC_AT_LEAST_9
default "thunderxt83" if BR2_thunderxt83 && !BR2_TOOLCHAIN_GCC_AT_LEAST_9
default "octeontx83" if BR2_thunderxt83 && BR2_TOOLCHAIN_GCC_AT_LEAST_9
default "thunderxt88" if BR2_thunderxt88
default "thunderxt88p1" if BR2_thunderxt88p1
default "xgene1" if BR2_xgene1
# armv8.1a
default "thunderx2t99" if BR2_thunderx2t99
default "thunderx2t99p1" if BR2_thunderx2t99p1
default "vulcan" if BR2_vulcan
# armv8.2a
default "cortex-a55" if BR2_cortex_a55
default "cortex-a75" if BR2_cortex_a75
default "cortex-a75.cortex-a55" if BR2_cortex_a75_a55
default "cortex-a76" if BR2_cortex_a76
default "cortex-a76.cortex-a55" if BR2_cortex_a76_a55
default "neoverse-n1" if BR2_neoverse_n1
default "tsv110" if BR2_tsv110
# armv8.4a
default "saphira" if BR2_saphira
config BR2_GCC_TARGET_ABI
default "aapcs-linux" if BR2_arm || BR2_armeb
default "lp64" if BR2_aarch64 || BR2_aarch64_be
config BR2_GCC_TARGET_FPU
default "vfp" if BR2_ARM_FPU_VFPV2
default "vfpv3" if BR2_ARM_FPU_VFPV3
default "vfpv3-d16" if BR2_ARM_FPU_VFPV3D16
default "vfpv4" if BR2_ARM_FPU_VFPV4
default "vfpv4-d16" if BR2_ARM_FPU_VFPV4D16
default "neon" if BR2_ARM_FPU_NEON
default "neon-vfpv4" if BR2_ARM_FPU_NEON_VFPV4
default "fpv4-sp-d16" if BR2_ARM_FPU_FPV4D16
default "fpv5-sp-d16" if BR2_ARM_FPU_FPV5D16
default "fpv5-d16" if BR2_ARM_FPU_FPV5DPD16
default "fp-armv8" if BR2_ARM_FPU_FP_ARMV8
default "neon-fp-armv8" if BR2_ARM_FPU_NEON_FP_ARMV8
depends on BR2_arm || BR2_armeb
config BR2_GCC_TARGET_FLOAT_ABI
default "soft" if BR2_ARM_SOFT_FLOAT
default "softfp" if !BR2_ARM_SOFT_FLOAT && BR2_ARM_EABI
default "hard" if !BR2_ARM_SOFT_FLOAT && BR2_ARM_EABIHF
config BR2_GCC_TARGET_MODE
default "arm" if BR2_ARM_INSTRUCTIONS_ARM
default "thumb" if BR2_ARM_INSTRUCTIONS_THUMB || BR2_ARM_INSTRUCTIONS_THUMB2
config BR2_READELF_ARCH_NAME
default "ARM" if BR2_arm || BR2_armeb
default "AArch64" if BR2_aarch64 || BR2_aarch64_be
# vim: ft=kconfig
# -*- mode:kconfig; -*-
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