# SPDX-License-Identifier: GPL-2.0

  # Put here option for CPU selection and depending optimization

  choice
  	prompt "Processor family"

  	default M686 if X86_32
  	default GENERIC_CPU if X86_64

  	help

  	  This is the processor type of your CPU. This information is
  	  used for optimizing purposes. In order to compile a kernel
  	  that can run on all supported x86 CPU types (albeit not
  	  optimally fast), you can specify "486" here.
  
  	  Note that the 386 is no longer supported, this includes
  	  AMD/Cyrix/Intel 386DX/DXL/SL/SLC/SX, Cyrix/TI 486DLC/DLC2,

  	  UMC 486SX-S and the NexGen Nx586.

  
  	  The kernel will not necessarily run on earlier architectures than
  	  the one you have chosen, e.g. a Pentium optimized kernel will run on
  	  a PPro, but not necessarily on a i486.
  
  	  Here are the settings recommended for greatest speed:

  	  - "486" for the AMD/Cyrix/IBM/Intel 486DX/DX2/DX4 or

  	    SL/SLC/SLC2/SLC3/SX/SX2 and UMC U5D or U5S.

  	  - "586" for generic Pentium CPUs lacking the TSC

  	    (time stamp counter) register.

  	  - "Pentium-Classic" for the Intel Pentium.
  	  - "Pentium-MMX" for the Intel Pentium MMX.
  	  - "Pentium-Pro" for the Intel Pentium Pro.
  	  - "Pentium-II" for the Intel Pentium II or pre-Coppermine Celeron.
  	  - "Pentium-III" for the Intel Pentium III or Coppermine Celeron.
  	  - "Pentium-4" for the Intel Pentium 4 or P4-based Celeron.
  	  - "K6" for the AMD K6, K6-II and K6-III (aka K6-3D).
  	  - "Athlon" for the AMD K7 family (Athlon/Duron/Thunderbird).

  	  - "Opteron/Athlon64/Hammer/K8" for all K8 and newer AMD CPUs.

  	  - "Crusoe" for the Transmeta Crusoe series.
  	  - "Efficeon" for the Transmeta Efficeon series.
  	  - "Winchip-C6" for original IDT Winchip.

  	  - "Winchip-2" for IDT Winchips with 3dNow! capabilities.

  	  - "AMD Elan" for the 32-bit AMD Elan embedded CPU.

  	  - "GeodeGX1" for Geode GX1 (Cyrix MediaGX).

  	  - "Geode GX/LX" For AMD Geode GX and LX processors.

  	  - "CyrixIII/VIA C3" for VIA Cyrix III or VIA C3.

  	  - "VIA C3-2" for VIA C3-2 "Nehemiah" (model 9 and above).

  	  - "VIA C7" for VIA C7.

  	  - "Intel P4" for the Pentium 4/Netburst microarchitecture.
  	  - "Core 2/newer Xeon" for all core2 and newer Intel CPUs.
  	  - "Intel Atom" for the Atom-microarchitecture CPUs.
  	  - "Generic-x86-64" for a kernel which runs on any x86-64 CPU.
  
  	  See each option's help text for additional details. If you don't know
  	  what to do, choose "486".

  config M486SX
  	bool "486SX"
  	depends on X86_32

  	help

  	  Select this for an 486-class CPU without an FPU such as
  	  AMD/Cyrix/IBM/Intel SL/SLC/SLC2/SLC3/SX/SX2 and UMC U5S.

  config M486

  	bool "486DX"

  	depends on X86_32

  	help

  	  Select this for an 486-class CPU such as AMD/Cyrix/IBM/Intel

  	  486DX/DX2/DX4 and UMC U5D.

  
  config M586
  	bool "586/K5/5x86/6x86/6x86MX"

  	depends on X86_32

  	help

  	  Select this for an 586 or 686 series processor such as the AMD K5,
  	  the Cyrix 5x86, 6x86 and 6x86MX.  This choice does not
  	  assume the RDTSC (Read Time Stamp Counter) instruction.
  
  config M586TSC
  	bool "Pentium-Classic"

  	depends on X86_32

  	help

  	  Select this for a Pentium Classic processor with the RDTSC (Read
  	  Time Stamp Counter) instruction for benchmarking.
  
  config M586MMX
  	bool "Pentium-MMX"

  	depends on X86_32

  	help

  	  Select this for a Pentium with the MMX graphics/multimedia
  	  extended instructions.
  
  config M686
  	bool "Pentium-Pro"

  	depends on X86_32

  	help

  	  Select this for Intel Pentium Pro chips.  This enables the use of
  	  Pentium Pro extended instructions, and disables the init-time guard
  	  against the f00f bug found in earlier Pentiums.
  
  config MPENTIUMII
  	bool "Pentium-II/Celeron(pre-Coppermine)"

  	depends on X86_32

  	help

  	  Select this for Intel chips based on the Pentium-II and
  	  pre-Coppermine Celeron core.  This option enables an unaligned
  	  copy optimization, compiles the kernel with optimization flags
  	  tailored for the chip, and applies any applicable Pentium Pro
  	  optimizations.
  
  config MPENTIUMIII
  	bool "Pentium-III/Celeron(Coppermine)/Pentium-III Xeon"

  	depends on X86_32

  	help

  	  Select this for Intel chips based on the Pentium-III and
  	  Celeron-Coppermine core.  This option enables use of some
  	  extended prefetch instructions in addition to the Pentium II
  	  extensions.
  
  config MPENTIUMM
  	bool "Pentium M"

  	depends on X86_32

  	help

  	  Select this for Intel Pentium M (not Pentium-4 M)
  	  notebook chips.
  
  config MPENTIUM4

  	bool "Pentium-4/Celeron(P4-based)/Pentium-4 M/older Xeon"

  	depends on X86_32

  	help

  	  Select this for Intel Pentium 4 chips.  This includes the

  	  Pentium 4, Pentium D, P4-based Celeron and Xeon, and
  	  Pentium-4 M (not Pentium M) chips.  This option enables compile
  	  flags optimized for the chip, uses the correct cache line size, and
  	  applies any applicable optimizations.
  
  	  CPUIDs: F[0-6][1-A] (in /proc/cpuinfo show = cpu family : 15 )
  
  	  Select this for:
  	    Pentiums (Pentium 4, Pentium D, Celeron, Celeron D) corename:
  		-Willamette
  		-Northwood
  		-Mobile Pentium 4
  		-Mobile Pentium 4 M
  		-Extreme Edition (Gallatin)
  		-Prescott
  		-Prescott 2M
  		-Cedar Mill
  		-Presler
  		-Smithfiled
  	    Xeons (Intel Xeon, Xeon MP, Xeon LV, Xeon MV) corename:
  		-Foster
  		-Prestonia
  		-Gallatin
  		-Nocona
  		-Irwindale
  		-Cranford
  		-Potomac
  		-Paxville
  		-Dempsey

  
  config MK6
  	bool "K6/K6-II/K6-III"

  	depends on X86_32

  	help

  	  Select this for an AMD K6-family processor.  Enables use of
  	  some extended instructions, and passes appropriate optimization
  	  flags to GCC.
  
  config MK7
  	bool "Athlon/Duron/K7"

  	depends on X86_32

  	help

  	  Select this for an AMD Athlon K7-family processor.  Enables use of
  	  some extended instructions, and passes appropriate optimization
  	  flags to GCC.
  
  config MK8
  	bool "Opteron/Athlon64/Hammer/K8"

  	help

  	  Select this for an AMD Opteron or Athlon64 Hammer-family processor.
  	  Enables use of some extended instructions, and passes appropriate
  	  optimization flags to GCC.

  
  config MCRUSOE
  	bool "Crusoe"

  	depends on X86_32

  	help

  	  Select this for a Transmeta Crusoe processor.  Treats the processor
  	  like a 586 with TSC, and sets some GCC optimization flags (like a
  	  Pentium Pro with no alignment requirements).
  
  config MEFFICEON
  	bool "Efficeon"

  	depends on X86_32

  	help

  	  Select this for a Transmeta Efficeon processor.
  
  config MWINCHIPC6
  	bool "Winchip-C6"

  	depends on X86_32

  	help

  	  Select this for an IDT Winchip C6 chip.  Linux and GCC
  	  treat this chip as a 586TSC with some extended instructions
  	  and alignment requirements.

  config MWINCHIP3D

  	bool "Winchip-2/Winchip-2A/Winchip-3"

  	depends on X86_32

  	help

  	  Select this for an IDT Winchip-2, 2A or 3.  Linux and GCC

  	  treat this chip as a 586TSC with some extended instructions

  	  and alignment requirements.  Also enable out of order memory

  	  stores for this CPU, which can increase performance of some
  	  operations.

  config MELAN
  	bool "AMD Elan"
  	depends on X86_32

  	help

  	  Select this for an AMD Elan processor.
  
  	  Do not use this option for K6/Athlon/Opteron processors!

  config MGEODEGX1
  	bool "GeodeGX1"

  	depends on X86_32

  	help

  	  Select this for a Geode GX1 (Cyrix MediaGX) chip.

  config MGEODE_LX

  	bool "Geode GX/LX"

  	depends on X86_32

  	help

  	  Select this for AMD Geode GX and LX processors.

  config MCYRIXIII
  	bool "CyrixIII/VIA-C3"

  	depends on X86_32

  	help

  	  Select this for a Cyrix III or C3 chip.  Presently Linux and GCC
  	  treat this chip as a generic 586. Whilst the CPU is 686 class,
  	  it lacks the cmov extension which gcc assumes is present when
  	  generating 686 code.
  	  Note that Nehemiah (Model 9) and above will not boot with this
  	  kernel due to them lacking the 3DNow! instructions used in earlier
  	  incarnations of the CPU.
  
  config MVIAC3_2
  	bool "VIA C3-2 (Nehemiah)"

  	depends on X86_32

  	help

  	  Select this for a VIA C3 "Nehemiah". Selecting this enables usage
  	  of SSE and tells gcc to treat the CPU as a 686.
  	  Note, this kernel will not boot on older (pre model 9) C3s.

  config MVIAC7
  	bool "VIA C7"

  	depends on X86_32

  	help

  	  Select this for a VIA C7.  Selecting this uses the correct cache
  	  shift and tells gcc to treat the CPU as a 686.

  config MPSC
  	bool "Intel P4 / older Netburst based Xeon"
  	depends on X86_64

  	help

  	  Optimize for Intel Pentium 4, Pentium D and older Nocona/Dempsey
  	  Xeon CPUs with Intel 64bit which is compatible with x86-64.
  	  Note that the latest Xeons (Xeon 51xx and 53xx) are not based on the

  	  Netburst core and shouldn't use this option. You can distinguish them

  	  using the cpu family field
  	  in /proc/cpuinfo. Family 15 is an older Xeon, Family 6 a newer one.
  
  config MCORE2
  	bool "Core 2/newer Xeon"

  	help

  
  	  Select this for Intel Core 2 and newer Core 2 Xeons (Xeon 51xx and
  	  53xx) CPUs. You can distinguish newer from older Xeons by the CPU
  	  family in /proc/cpuinfo. Newer ones have 6 and older ones 15
  	  (not a typo)

  config MATOM
  	bool "Intel Atom"

  	help

  
  	  Select this for the Intel Atom platform. Intel Atom CPUs have an
  	  in-order pipelining architecture and thus can benefit from
  	  accordingly optimized code. Use a recent GCC with specific Atom
  	  support in order to fully benefit from selecting this option.

  config GENERIC_CPU
  	bool "Generic-x86-64"
  	depends on X86_64

  	help

  	  Generic x86-64 CPU.
  	  Run equally well on all x86-64 CPUs.

  endchoice
  
  config X86_GENERIC

  	bool "Generic x86 support"
  	depends on X86_32

  	help

  	  Instead of just including optimizations for the selected
  	  x86 variant (e.g. PII, Crusoe or Athlon), include some more
  	  generic optimizations as well. This will make the kernel
  	  perform better on x86 CPUs other than that selected.
  
  	  This is really intended for distributors who need more
  	  generic optimizations.

  #
  # Define implied options from the CPU selection here

  config X86_INTERNODE_CACHE_SHIFT

  	int

  	default "12" if X86_VSMP

  	default X86_L1_CACHE_SHIFT

  config X86_L1_CACHE_SHIFT
  	int

  	default "7" if MPENTIUM4 || MPSC

  	default "6" if MK7 || MK8 || MPENTIUMM || MCORE2 || MATOM || MVIAC7 || X86_GENERIC || GENERIC_CPU

  	default "4" if MELAN || M486SX || M486 || MGEODEGX1

  	default "5" if MWINCHIP3D || MWINCHIPC6 || MCRUSOE || MEFFICEON || MCYRIXIII || MK6 || MPENTIUMIII || MPENTIUMII || M686 || M586MMX || M586TSC || M586 || MVIAC3_2 || MGEODE_LX

  config X86_F00F_BUG

  	def_bool y

  	depends on M586MMX || M586TSC || M586 || M486SX || M486

  config X86_INVD_BUG
  	def_bool y

  	depends on M486SX || M486

  config X86_ALIGNMENT_16

  	def_bool y

  	depends on MWINCHIP3D || MWINCHIPC6 || MCYRIXIII || MELAN || MK6 || M586MMX || M586TSC || M586 || M486SX || M486 || MVIAC3_2 || MGEODEGX1

  config X86_INTEL_USERCOPY

  	def_bool y

  	depends on MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M586MMX || X86_GENERIC || MK8 || MK7 || MEFFICEON || MCORE2

  
  config X86_USE_PPRO_CHECKSUM

  	def_bool y

  	depends on MWINCHIP3D || MWINCHIPC6 || MCYRIXIII || MK7 || MK6 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MK8 || MVIAC3_2 || MVIAC7 || MEFFICEON || MGEODE_LX || MCORE2 || MATOM

  
  config X86_USE_3DNOW

  	def_bool y

  	depends on (MCYRIXIII || MK7 || MGEODE_LX) && !UML

  #
  # P6_NOPs are a relatively minor optimization that require a family >=
  # 6 processor, except that it is broken on certain VIA chips.
  # Furthermore, AMD chips prefer a totally different sequence of NOPs

  # (which work on all CPUs).  In addition, it looks like Virtual PC
  # does not understand them.
  #
  # As a result, disallow these if we're not compiling for X86_64 (these
  # NOPs do work on all x86-64 capable chips); the list of processors in
  # the right-hand clause are the cores that benefit from this optimization.

  #

  config X86_P6_NOP
  	def_bool y

  	depends on X86_64
  	depends on (MCORE2 || MPENTIUM4 || MPSC)

  config X86_TSC

  	def_bool y

  	depends on (MWINCHIP3D || MCRUSOE || MEFFICEON || MCYRIXIII || MK7 || MK6 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || M586MMX || M586TSC || MK8 || MVIAC3_2 || MVIAC7 || MGEODEGX1 || MGEODE_LX || MCORE2 || MATOM) || X86_64

  config X86_CMPXCHG64
  	def_bool y

  	depends on X86_PAE || X86_64 || MCORE2 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || M586TSC || M586MMX || MATOM || MGEODE_LX || MGEODEGX1 || MK6 || MK7 || MK8

  # this should be set for all -march=.. options where the compiler
  # generates cmov.
  config X86_CMOV

  	def_bool y

  	depends on (MK8 || MK7 || MCORE2 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MVIAC3_2 || MVIAC7 || MCRUSOE || MEFFICEON || X86_64 || MATOM || MGEODE_LX)

  config X86_MINIMUM_CPU_FAMILY

  	int

  	default "64" if X86_64

  	default "6" if X86_32 && (MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MVIAC3_2 || MVIAC7 || MEFFICEON || MATOM || MCRUSOE || MCORE2 || MK7 || MK8)

  	default "5" if X86_32 && X86_CMPXCHG64

  	default "4"

  config X86_DEBUGCTLMSR

  	def_bool y

  	depends on !(MK6 || MWINCHIPC6 || MWINCHIP3D || MCYRIXIII || M586MMX || M586TSC || M586 || M486SX || M486) && !UML

  config IA32_FEAT_CTL
  	def_bool y

  	depends on CPU_SUP_INTEL || CPU_SUP_CENTAUR || CPU_SUP_ZHAOXIN

  config X86_VMX_FEATURE_NAMES
  	def_bool y
  	depends on IA32_FEAT_CTL && X86_FEATURE_NAMES

  menuconfig PROCESSOR_SELECT

  	bool "Supported processor vendors" if EXPERT

  	help

  	  This lets you choose what x86 vendor support code your kernel
  	  will include.

  config CPU_SUP_INTEL

  	default y
  	bool "Support Intel processors" if PROCESSOR_SELECT

  	help

  	  This enables detection, tunings and quirks for Intel processors
  
  	  You need this enabled if you want your kernel to run on an
  	  Intel CPU. Disabling this option on other types of CPUs
  	  makes the kernel a tiny bit smaller. Disabling it on an Intel
  	  CPU might render the kernel unbootable.
  
  	  If unsure, say N.

  
  config CPU_SUP_CYRIX_32
  	default y
  	bool "Support Cyrix processors" if PROCESSOR_SELECT

  	depends on M486SX || M486 || M586 || M586TSC || M586MMX || (EXPERT && !64BIT)

  	help

  	  This enables detection, tunings and quirks for Cyrix processors
  
  	  You need this enabled if you want your kernel to run on a
  	  Cyrix CPU. Disabling this option on other types of CPUs
  	  makes the kernel a tiny bit smaller. Disabling it on a Cyrix
  	  CPU might render the kernel unbootable.
  
  	  If unsure, say N.

  config CPU_SUP_AMD

  	default y
  	bool "Support AMD processors" if PROCESSOR_SELECT

  	help

  	  This enables detection, tunings and quirks for AMD processors
  
  	  You need this enabled if you want your kernel to run on an
  	  AMD CPU. Disabling this option on other types of CPUs
  	  makes the kernel a tiny bit smaller. Disabling it on an AMD
  	  CPU might render the kernel unbootable.
  
  	  If unsure, say N.

  config CPU_SUP_HYGON
  	default y
  	bool "Support Hygon processors" if PROCESSOR_SELECT
  	select CPU_SUP_AMD
  	help
  	  This enables detection, tunings and quirks for Hygon processors
  
  	  You need this enabled if you want your kernel to run on an
  	  Hygon CPU. Disabling this option on other types of CPUs
  	  makes the kernel a tiny bit smaller. Disabling it on an Hygon
  	  CPU might render the kernel unbootable.
  
  	  If unsure, say N.

  config CPU_SUP_CENTAUR

  	default y
  	bool "Support Centaur processors" if PROCESSOR_SELECT

  	help

  	  This enables detection, tunings and quirks for Centaur processors
  
  	  You need this enabled if you want your kernel to run on a
  	  Centaur CPU. Disabling this option on other types of CPUs
  	  makes the kernel a tiny bit smaller. Disabling it on a Centaur
  	  CPU might render the kernel unbootable.
  
  	  If unsure, say N.

  
  config CPU_SUP_TRANSMETA_32
  	default y
  	bool "Support Transmeta processors" if PROCESSOR_SELECT
  	depends on !64BIT

  	help

  	  This enables detection, tunings and quirks for Transmeta processors
  
  	  You need this enabled if you want your kernel to run on a
  	  Transmeta CPU. Disabling this option on other types of CPUs
  	  makes the kernel a tiny bit smaller. Disabling it on a Transmeta
  	  CPU might render the kernel unbootable.
  
  	  If unsure, say N.

  
  config CPU_SUP_UMC_32
  	default y
  	bool "Support UMC processors" if PROCESSOR_SELECT

  	depends on M486SX || M486 || (EXPERT && !64BIT)

  	help

  	  This enables detection, tunings and quirks for UMC processors
  
  	  You need this enabled if you want your kernel to run on a
  	  UMC CPU. Disabling this option on other types of CPUs
  	  makes the kernel a tiny bit smaller. Disabling it on a UMC
  	  CPU might render the kernel unbootable.
  
  	  If unsure, say N.

  
  config CPU_SUP_ZHAOXIN
  	default y
  	bool "Support Zhaoxin processors" if PROCESSOR_SELECT
  	help
  	  This enables detection, tunings and quirks for Zhaoxin processors
  
  	  You need this enabled if you want your kernel to run on a
  	  Zhaoxin CPU. Disabling this option on other types of CPUs
  	  makes the kernel a tiny bit smaller. Disabling it on a Zhaoxin
  	  CPU might render the kernel unbootable.
  
  	  If unsure, say N.