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x86: arch/x86/Kconfig.cpu unification 

Move all CPU definitions to Kconfig.cpu
Always define X86_MINIMUM_CPU_FAMILY and do the
obvious code cleanup in boot/cpucheck.c

Comments from: Adrian Bunk <bunk@kernel.org> incorporated.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Cc: Adrian Bunk <bunk@kernel.org>
Cc: Brian Gerst <bgerst@didntduck.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
This commit is contained in:
Sam Ravnborg 2007-11-06 21:35:08 +01:00
parent e279b6c1d3
commit 1032c0ba9d
4 changed files with 95 additions and 134 deletions
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19
arch/x86/Kconfig
View File

@ -1,3 +1,22 @@
# x86 configuration
### Arch settings
config RWSEM_GENERIC_SPINLOCK
def_bool !X86_XADD
config RWSEM_XCHGADD_ALGORITHM
def_bool X86_XADD
config ARCH_HAS_ILOG2_U32
def_bool n
config ARCH_HAS_ILOG2_U64
def_bool n
config GENERIC_CALIBRATE_DELAY
def_bool y
menu "Power management options"
depends on !X86_VOYAGER

121
arch/x86/Kconfig.cpu
View File

@ -3,11 +3,12 @@ if !X86_ELAN
choice
prompt "Processor family"
default M686
default M686 if X86_32
default GENERIC_CPU if X86_64
config M386
bool "386"
depends on !UML
depends on X86_32 && !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
@ -49,6 +50,7 @@ config M386
config M486
bool "486"
depends on X86_32
help
Select this for a 486 series processor, either Intel or one of the
compatible processors from AMD, Cyrix, IBM, or Intel. Includes DX,
@ -57,6 +59,7 @@ config M486
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
@ -64,18 +67,21 @@ config M586
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
@ -83,6 +89,7 @@ config M686
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
@ -92,6 +99,7 @@ config MPENTIUMII
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
@ -100,19 +108,14 @@ config MPENTIUMIII
config MPENTIUMM
bool "Pentium M"
depends on X86_32
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 distinguish newer from older Xeons by the CPU family
in /proc/cpuinfo. Newer ones have 6 and older ones 15 (not a typo)
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
@ -148,6 +151,7 @@ config MPENTIUM4
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
@ -155,6 +159,7 @@ config MK6
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
@ -169,6 +174,7 @@ config MK8
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
@ -176,11 +182,13 @@ config MCRUSOE
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
@ -188,6 +196,7 @@ config MWINCHIPC6
config MWINCHIP2
bool "Winchip-2"
depends on X86_32
help
Select this for an IDT Winchip-2. Linux and GCC
treat this chip as a 586TSC with some extended instructions
@ -195,6 +204,7 @@ config MWINCHIP2
config MWINCHIP3D
bool "Winchip-2A/Winchip-3"
depends on X86_32
help
Select this for an IDT Winchip-2A or 3. Linux and GCC
treat this chip as a 586TSC with some extended instructions
@ -204,16 +214,19 @@ config MWINCHIP3D
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,
@ -225,6 +238,7 @@ config MCYRIXIII
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.
@ -232,15 +246,42 @@ config MVIAC3_2
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 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"
help
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
@ -253,44 +294,31 @@ endif
#
# Define implied options from the CPU selection here
#
config X86_L1_CACHE_BYTES
int
default "128" if GENERIC_CPU || MPSC
default "64" if MK8 || MCORE2
depends on X86_64
config X86_INTERNODE_CACHE_BYTES
int
default "4096" if X86_VSMP
default X86_L1_CACHE_BYTES if !X86_VSMP
depends on X86_64
config X86_CMPXCHG
bool
depends on !M386
default y
def_bool X86_64 || (X86_32 && !M386)
config X86_L1_CACHE_SHIFT
int
default "7" if MPENTIUM4 || X86_GENERIC
default "7" if MPENTIUM4 || X86_GENERIC || GENERIC_CPU || MPSC
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 || MVIAC7
config X86_XADD
bool
depends on !M386
default y
config RWSEM_GENERIC_SPINLOCK
bool
depends on !X86_XADD
default y
config RWSEM_XCHGADD_ALGORITHM
bool
depends on X86_XADD
default y
config ARCH_HAS_ILOG2_U32
bool
default n
config ARCH_HAS_ILOG2_U64
bool
default n
config GENERIC_CALIBRATE_DELAY
bool
depends on X86_32 && !M386
default y
config X86_PPRO_FENCE
@ -305,22 +333,22 @@ config X86_F00F_BUG
config X86_WP_WORKS_OK
bool
depends on !M386
depends on X86_32 && !M386
default y
config X86_INVLPG
bool
depends on !M386
depends on X86_32 && !M386
default y
config X86_BSWAP
bool
depends on !M386
depends on X86_32 && !M386
default y
config X86_POPAD_OK
bool
depends on !M386
depends on X86_32 && !M386
default y
config X86_ALIGNMENT_16
@ -330,7 +358,7 @@ config X86_ALIGNMENT_16
config X86_GOOD_APIC
bool
depends on MK7 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || M586MMX || MK8 || MEFFICEON || MCORE2 || MVIAC7
depends on MK7 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || M586MMX || MK8 || MEFFICEON || MCORE2 || MVIAC7 || X86_64
default y
config X86_INTEL_USERCOPY
@ -355,7 +383,7 @@ config X86_OOSTORE
config X86_TSC
bool
depends on (MWINCHIP3D || MWINCHIP2 || MCRUSOE || MEFFICEON || MCYRIXIII || MK7 || MK6 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || M586MMX || M586TSC || MK8 || MVIAC3_2 || MVIAC7 || MGEODEGX1 || MGEODE_LX || MCORE2) && !X86_NUMAQ
depends on ((MWINCHIP3D || MWINCHIP2 || MCRUSOE || MEFFICEON || MCYRIXIII || MK7 || MK6 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || M586MMX || M586TSC || MK8 || MVIAC3_2 || MVIAC7 || MGEODEGX1 || MGEODE_LX || MCORE2) && !X86_NUMAQ) || X86_64
default y
# this should be set for all -march=.. options where the compiler
@ -367,6 +395,7 @@ config X86_CMOV
config X86_MINIMUM_CPU_FAMILY
int
default "4" if X86_XADD || X86_CMPXCHG || X86_BSWAP || X86_WP_WORKS_OK
default "64" if X86_64
default "4" if X86_32 && (X86_XADD || X86_CMPXCHG || X86_BSWAP || X86_WP_WORKS_OK)
default "3"

83
arch/x86/Kconfig.x86_64
View File

@ -78,25 +78,10 @@ config ISA
config SBUS
bool
config RWSEM_GENERIC_SPINLOCK
bool
default y
config RWSEM_XCHGADD_ALGORITHM
bool
config GENERIC_HWEIGHT
bool
default y
config GENERIC_CALIBRATE_DELAY
bool
default y
config X86_CMPXCHG
bool
default y
config GENERIC_ISA_DMA
bool
default y
@ -125,13 +110,6 @@ config GENERIC_BUG
default y
depends on BUG
config ARCH_HAS_ILOG2_U32
bool
default n
config ARCH_HAS_ILOG2_U64
bool
default n
source "init/Kconfig"
@ -159,66 +137,7 @@ config X86_VSMP
endchoice
choice
prompt "Processor family"
default GENERIC_CPU
config MK8
bool "AMD-Opteron/Athlon64"
help
Optimize for AMD Opteron/Athlon64/Hammer/K8 CPUs.
config MPSC
bool "Intel P4 / older Netburst based Xeon"
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 "Intel Core2 / newer Xeon"
help
Optimize for Intel Core2 and newer Xeons (51xx)
You can distinguish the newer Xeons from the older ones using
the cpu family field in /proc/cpuinfo. 15 is an older Xeon
(use CONFIG_MPSC then), 6 is a newer one.
config GENERIC_CPU
bool "Generic-x86-64"
help
Generic x86-64 CPU.
Run equally well on all x86-64 CPUs.
endchoice
#
# Define implied options from the CPU selection here
#
config X86_L1_CACHE_BYTES
int
default "128" if GENERIC_CPU || MPSC
default "64" if MK8 || MCORE2
config X86_L1_CACHE_SHIFT
int
default "7" if GENERIC_CPU || MPSC
default "6" if MK8 || MCORE2
config X86_INTERNODE_CACHE_BYTES
int
default "4096" if X86_VSMP
default X86_L1_CACHE_BYTES if !X86_VSMP
config X86_TSC
bool
default y
config X86_GOOD_APIC
bool
default y
source "arch/x86/Kconfig.cpu"
config MICROCODE
tristate "/dev/cpu/microcode - Intel CPU microcode support"

6
arch/x86/boot/cpucheck.c
View File

@ -42,13 +42,7 @@ static struct cpu_features cpu;
static u32 cpu_vendor[3];
static u32 err_flags[NCAPINTS];
#ifdef CONFIG_X86_64
static const int req_level = 64;
#elif defined(CONFIG_X86_MINIMUM_CPU_FAMILY)
static const int req_level = CONFIG_X86_MINIMUM_CPU_FAMILY;
#else
static const int req_level = 3;
#endif
static const u32 req_flags[NCAPINTS] =
{