327 lines
9.5 KiB
Plaintext
327 lines
9.5 KiB
Plaintext
# Put here option for CPU selection and depending optimization
|
|
if !X86_ELAN
|
|
|
|
choice
|
|
prompt "Processor family"
|
|
default M686
|
|
|
|
config M386
|
|
bool "386"
|
|
depends on !UML
|
|
---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 x86 CPU types (albeit not optimally fast), you can specify
|
|
"386" here.
|
|
|
|
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:
|
|
- "386" for the AMD/Cyrix/Intel 386DX/DXL/SL/SLC/SX, Cyrix/TI
|
|
486DLC/DLC2, UMC 486SX-S and NexGen Nx586. Only "386" kernels
|
|
will run on a 386 class machine.
|
|
- "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).
|
|
- "Crusoe" for the Transmeta Crusoe series.
|
|
- "Efficeon" for the Transmeta Efficeon series.
|
|
- "Winchip-C6" for original IDT Winchip.
|
|
- "Winchip-2" for IDT Winchip 2.
|
|
- "Winchip-2A" for IDT Winchips with 3dNow! capabilities.
|
|
- "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).
|
|
|
|
If you don't know what to do, choose "386".
|
|
|
|
config M486
|
|
bool "486"
|
|
help
|
|
Select this for a 486 series processor, either Intel or one of the
|
|
compatible processors from AMD, Cyrix, IBM, or Intel. Includes DX,
|
|
DX2, and DX4 variants; also SL/SLC/SLC2/SLC3/SX/SX2 and UMC U5D or
|
|
U5S.
|
|
|
|
config M586
|
|
bool "586/K5/5x86/6x86/6x86MX"
|
|
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"
|
|
help
|
|
Select this for a Pentium Classic processor with the RDTSC (Read
|
|
Time Stamp Counter) instruction for benchmarking.
|
|
|
|
config M586MMX
|
|
bool "Pentium-MMX"
|
|
help
|
|
Select this for a Pentium with the MMX graphics/multimedia
|
|
extended instructions.
|
|
|
|
config M686
|
|
bool "Pentium-Pro"
|
|
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)"
|
|
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"
|
|
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"
|
|
help
|
|
Select this for Intel Pentium M (not Pentium-4 M)
|
|
notebook chips.
|
|
|
|
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 distingush newer from older Xeons by the CPU family
|
|
in /proc/cpuinfo. Newer ones have 6.
|
|
|
|
config MPENTIUM4
|
|
bool "Pentium-4/Celeron(P4-based)/Pentium-4 M/older Xeon"
|
|
help
|
|
Select this for Intel Pentium 4 chips. This includes the
|
|
Pentium 4, 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 shift, and
|
|
applies any applicable Pentium III optimizations.
|
|
|
|
config MK6
|
|
bool "K6/K6-II/K6-III"
|
|
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"
|
|
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"
|
|
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"
|
|
help
|
|
Select this for a Transmeta Efficeon processor.
|
|
|
|
config MWINCHIPC6
|
|
bool "Winchip-C6"
|
|
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 MWINCHIP2
|
|
bool "Winchip-2"
|
|
help
|
|
Select this for an IDT Winchip-2. Linux and GCC
|
|
treat this chip as a 586TSC with some extended instructions
|
|
and alignment requirements.
|
|
|
|
config MWINCHIP3D
|
|
bool "Winchip-2A/Winchip-3"
|
|
help
|
|
Select this for an IDT Winchip-2A or 3. Linux and GCC
|
|
treat this chip as a 586TSC with some extended instructions
|
|
and alignment reqirements. Also enable out of order memory
|
|
stores for this CPU, which can increase performance of some
|
|
operations.
|
|
|
|
config MGEODEGX1
|
|
bool "GeodeGX1"
|
|
help
|
|
Select this for a Geode GX1 (Cyrix MediaGX) chip.
|
|
|
|
config MGEODE_LX
|
|
bool "Geode GX/LX"
|
|
help
|
|
Select this for AMD Geode GX and LX processors.
|
|
|
|
config MCYRIXIII
|
|
bool "CyrixIII/VIA-C3"
|
|
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)"
|
|
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.
|
|
|
|
endchoice
|
|
|
|
config X86_GENERIC
|
|
bool "Generic x86 support"
|
|
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.
|
|
|
|
endif
|
|
|
|
#
|
|
# Define implied options from the CPU selection here
|
|
#
|
|
config X86_CMPXCHG
|
|
bool
|
|
depends on !M386
|
|
default y
|
|
|
|
config X86_L1_CACHE_SHIFT
|
|
int
|
|
default "7" if MPENTIUM4 || X86_GENERIC
|
|
default "4" if X86_ELAN || M486 || M386 || MGEODEGX1
|
|
default "5" if MWINCHIP3D || MWINCHIP2 || MWINCHIPC6 || MCRUSOE || MEFFICEON || MCYRIXIII || MK6 || MPENTIUMIII || MPENTIUMII || M686 || M586MMX || M586TSC || M586 || MVIAC3_2 || MGEODE_LX
|
|
default "6" if MK7 || MK8 || MPENTIUMM || MCORE2
|
|
|
|
config RWSEM_GENERIC_SPINLOCK
|
|
bool
|
|
depends on M386
|
|
default y
|
|
|
|
config RWSEM_XCHGADD_ALGORITHM
|
|
bool
|
|
depends on !M386
|
|
default y
|
|
|
|
config ARCH_HAS_ILOG2_U32
|
|
bool
|
|
default n
|
|
|
|
config ARCH_HAS_ILOG2_U64
|
|
bool
|
|
default n
|
|
|
|
config GENERIC_CALIBRATE_DELAY
|
|
bool
|
|
default y
|
|
|
|
config X86_PPRO_FENCE
|
|
bool
|
|
depends on M686 || M586MMX || M586TSC || M586 || M486 || M386 || MGEODEGX1
|
|
default y
|
|
|
|
config X86_F00F_BUG
|
|
bool
|
|
depends on M586MMX || M586TSC || M586 || M486 || M386
|
|
default y
|
|
|
|
config X86_WP_WORKS_OK
|
|
bool
|
|
depends on !M386
|
|
default y
|
|
|
|
config X86_INVLPG
|
|
bool
|
|
depends on !M386
|
|
default y
|
|
|
|
config X86_BSWAP
|
|
bool
|
|
depends on !M386
|
|
default y
|
|
|
|
config X86_POPAD_OK
|
|
bool
|
|
depends on !M386
|
|
default y
|
|
|
|
config X86_CMPXCHG64
|
|
bool
|
|
depends on !M386 && !M486
|
|
default y
|
|
|
|
config X86_ALIGNMENT_16
|
|
bool
|
|
depends on MWINCHIP3D || MWINCHIP2 || MWINCHIPC6 || MCYRIXIII || X86_ELAN || MK6 || M586MMX || M586TSC || M586 || M486 || MVIAC3_2 || MGEODEGX1
|
|
default y
|
|
|
|
config X86_GOOD_APIC
|
|
bool
|
|
depends on MK7 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || M586MMX || MK8 || MEFFICEON || MCORE2
|
|
default y
|
|
|
|
config X86_INTEL_USERCOPY
|
|
bool
|
|
depends on MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M586MMX || X86_GENERIC || MK8 || MK7 || MEFFICEON || MCORE2
|
|
default y
|
|
|
|
config X86_USE_PPRO_CHECKSUM
|
|
bool
|
|
depends on MWINCHIP3D || MWINCHIP2 || MWINCHIPC6 || MCYRIXIII || MK7 || MK6 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MK8 || MVIAC3_2 || MEFFICEON || MGEODE_LX || MCORE2
|
|
default y
|
|
|
|
config X86_USE_3DNOW
|
|
bool
|
|
depends on (MCYRIXIII || MK7 || MGEODE_LX) && !UML
|
|
default y
|
|
|
|
config X86_OOSTORE
|
|
bool
|
|
depends on (MWINCHIP3D || MWINCHIP2 || MWINCHIPC6) && MTRR
|
|
default y
|
|
|
|
config X86_TSC
|
|
bool
|
|
depends on (MWINCHIP3D || MWINCHIP2 || MCRUSOE || MEFFICEON || MCYRIXIII || MK7 || MK6 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || M586MMX || M586TSC || MK8 || MVIAC3_2 || MGEODEGX1 || MGEODE_LX || MCORE2) && !X86_NUMAQ
|
|
default y
|