524 lines
17 KiB
Plaintext
524 lines
17 KiB
Plaintext
# 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
|
|
|
|
#
|
|
# 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_HAVE_PAE
|
|
def_bool y
|
|
depends on MCRUSOE || MEFFICEON || MCYRIXIII || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MK8 || MVIAC7 || MCORE2 || MATOM || X86_64
|
|
|
|
config X86_CMPXCHG64
|
|
def_bool y
|
|
depends on X86_HAVE_PAE || M586TSC || M586MMX || MK6 || MK7
|
|
|
|
# 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 || 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
|
|
|
|
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.
|
|
|
|
config CPU_SUP_VORTEX_32
|
|
default y
|
|
bool "Support Vortex processors" if PROCESSOR_SELECT
|
|
depends on X86_32
|
|
help
|
|
This enables detection, tunings and quirks for Vortex processors
|
|
|
|
You need this enabled if you want your kernel to run on a
|
|
Vortex CPU. Disabling this option on other types of CPUs
|
|
makes the kernel a tiny bit smaller.
|
|
|
|
If unsure, say N.
|