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>

arch/x86/Kconfig

@@ -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
 

arch/x86/Kconfig.cpu

@@ -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,
@@ -57,32 +59,37 @@ 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
 	  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
@@ -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
@@ -148,13 +151,15 @@ 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
 	  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
@@ -169,32 +174,37 @@ 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
 	  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 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
 	  and alignment requirements.
 
 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,
@@ -225,22 +238,50 @@ 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.
 	  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 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"