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# x86 configuration
mainmenu "Linux Kernel Configuration for x86"

# Select 32 or 64 bit
config 64BIT
	bool "64-bit kernel" if ARCH = "x86"
	default ARCH = "x86_64"
	help
	  Say yes to build a 64-bit kernel - formerly known as x86_64
	  Say no to build a 32-bit kernel - formerly known as i386

config X86_32
	def_bool !64BIT

config X86_64
	def_bool 64BIT

### Arch settings
config X86
	def_bool y
	select HAVE_UNSTABLE_SCHED_CLOCK
	select HAVE_IDE
	select HAVE_OPROFILE
	select HAVE_KPROBES
	select HAVE_KRETPROBES
	select HAVE_KVM if ((X86_32 && !X86_VOYAGER && !X86_VISWS && !X86_NUMAQ) || X86_64)
	select HAVE_ARCH_KGDB if !X86_VOYAGER

config ARCH_DEFCONFIG
	string
	default "arch/x86/configs/i386_defconfig" if X86_32
	default "arch/x86/configs/x86_64_defconfig" if X86_64


config GENERIC_LOCKBREAK
	def_bool n

config GENERIC_TIME
	def_bool y

config GENERIC_CMOS_UPDATE
	def_bool y

config CLOCKSOURCE_WATCHDOG
	def_bool y

config GENERIC_CLOCKEVENTS
	def_bool y

config GENERIC_CLOCKEVENTS_BROADCAST
	def_bool y
	depends on X86_64 || (X86_32 && X86_LOCAL_APIC)

config LOCKDEP_SUPPORT
	def_bool y

config STACKTRACE_SUPPORT
	def_bool y

config HAVE_LATENCYTOP_SUPPORT
	def_bool y

config FAST_CMPXCHG_LOCAL
	bool
	default y

config MMU
	def_bool y

config ZONE_DMA
	def_bool y

config SBUS
	bool

config GENERIC_ISA_DMA
	def_bool y

config GENERIC_IOMAP
	def_bool y

config GENERIC_BUG
	def_bool y
	depends on BUG

config GENERIC_HWEIGHT
	def_bool y

config GENERIC_GPIO
	def_bool n

config ARCH_MAY_HAVE_PC_FDC
	def_bool y

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 ARCH_HAS_CPU_IDLE_WAIT
	def_bool y

config GENERIC_CALIBRATE_DELAY
	def_bool y

config GENERIC_TIME_VSYSCALL
	bool
	default X86_64

config ARCH_HAS_CPU_RELAX
	def_bool y

config ARCH_HAS_CACHE_LINE_SIZE
	def_bool y

config HAVE_SETUP_PER_CPU_AREA
	def_bool X86_64 || (X86_SMP && !X86_VOYAGER)

config HAVE_CPUMASK_OF_CPU_MAP
	def_bool X86_64_SMP

config ARCH_HIBERNATION_POSSIBLE
	def_bool y
	depends on !SMP || !X86_VOYAGER

config ARCH_SUSPEND_POSSIBLE
	def_bool y
	depends on !X86_VOYAGER

config ZONE_DMA32
	bool
	default X86_64

config ARCH_POPULATES_NODE_MAP
	def_bool y

config AUDIT_ARCH
	bool
	default X86_64

config ARCH_SUPPORTS_AOUT
	def_bool y

config ARCH_SUPPORTS_OPTIMIZED_INLINING
	def_bool y

# Use the generic interrupt handling code in kernel/irq/:
config GENERIC_HARDIRQS
	bool
	default y

config GENERIC_IRQ_PROBE
	bool
	default y

config GENERIC_PENDING_IRQ
	bool
	depends on GENERIC_HARDIRQS && SMP
	default y

config X86_SMP
	bool
	depends on SMP && ((X86_32 && !X86_VOYAGER) || X86_64)
	default y

config X86_32_SMP
	def_bool y
	depends on X86_32 && SMP

config X86_64_SMP
	def_bool y
	depends on X86_64 && SMP

config X86_HT
	bool
	depends on SMP
	depends on (X86_32 && !(X86_VISWS || X86_VOYAGER)) || X86_64
	default y

config X86_BIOS_REBOOT
	bool
	depends on !X86_VISWS && !X86_VOYAGER
	default y

config X86_TRAMPOLINE
	bool
	depends on X86_SMP || (X86_VOYAGER && SMP) || (64BIT && ACPI_SLEEP)
	default y

config KTIME_SCALAR
	def_bool X86_32
source "init/Kconfig"

menu "Processor type and features"

source "kernel/time/Kconfig"

config SMP
	bool "Symmetric multi-processing support"
	---help---
	  This enables support for systems with more than one CPU. If you have
	  a system with only one CPU, like most personal computers, say N. If
	  you have a system with more than one CPU, say Y.

	  If you say N here, the kernel will run on single and multiprocessor
	  machines, but will use only one CPU of a multiprocessor machine. If
	  you say Y here, the kernel will run on many, but not all,
	  singleprocessor machines. On a singleprocessor machine, the kernel
	  will run faster if you say N here.

	  Note that if you say Y here and choose architecture "586" or
	  "Pentium" under "Processor family", the kernel will not work on 486
	  architectures. Similarly, multiprocessor kernels for the "PPro"
	  architecture may not work on all Pentium based boards.

	  People using multiprocessor machines who say Y here should also say
	  Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
	  Management" code will be disabled if you say Y here.

	  See also <file:Documentation/i386/IO-APIC.txt>,
	  <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
	  <http://www.tldp.org/docs.html#howto>.

	  If you don't know what to do here, say N.

choice
	prompt "Subarchitecture Type"
	default X86_PC

config X86_PC
	bool "PC-compatible"
	help
	  Choose this option if your computer is a standard PC or compatible.

config X86_ELAN
	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!

	  If unsure, choose "PC-compatible" instead.

config X86_VOYAGER
	bool "Voyager (NCR)"
	depends on X86_32 && (SMP || BROKEN) && !PCI
	help
	  Voyager is an MCA-based 32-way capable SMP architecture proprietary
	  to NCR Corp.  Machine classes 345x/35xx/4100/51xx are Voyager-based.

	  *** WARNING ***

	  If you do not specifically know you have a Voyager based machine,
	  say N here, otherwise the kernel you build will not be bootable.

config X86_NUMAQ
	bool "NUMAQ (IBM/Sequent)"
	depends on SMP && X86_32 && PCI
	select NUMA
	help
	  This option is used for getting Linux to run on a (IBM/Sequent) NUMA
	  multiquad box. This changes the way that processors are bootstrapped,
	  and uses Clustered Logical APIC addressing mode instead of Flat Logical.
	  You will need a new lynxer.elf file to flash your firmware with - send
	  email to <Martin.Bligh@us.ibm.com>.

config X86_SUMMIT
	bool "Summit/EXA (IBM x440)"
	depends on X86_32 && SMP
	help
	  This option is needed for IBM systems that use the Summit/EXA chipset.
	  In particular, it is needed for the x440.

	  If you don't have one of these computers, you should say N here.
	  If you want to build a NUMA kernel, you must select ACPI.

config X86_BIGSMP
	bool "Support for other sub-arch SMP systems with more than 8 CPUs"
	depends on X86_32 && SMP
	help
	  This option is needed for the systems that have more than 8 CPUs
	  and if the system is not of any sub-arch type above.

	  If you don't have such a system, you should say N here.

config X86_VISWS
	bool "SGI 320/540 (Visual Workstation)"
	depends on X86_32 && !PCI
	help
	  The SGI Visual Workstation series is an IA32-based workstation
	  based on SGI systems chips with some legacy PC hardware attached.

	  Say Y here to create a kernel to run on the SGI 320 or 540.

	  A kernel compiled for the Visual Workstation will not run on PCs
	  and vice versa. See <file:Documentation/sgi-visws.txt> for details.

config X86_GENERICARCH
       bool "Generic architecture (Summit, bigsmp, ES7000, default)"
	depends on X86_32
       help
          This option compiles in the Summit, bigsmp, ES7000, default subarchitectures.
	  It is intended for a generic binary kernel.
	  If you want a NUMA kernel, select ACPI.   We need SRAT for NUMA.

config X86_ES7000
	bool "Support for Unisys ES7000 IA32 series"
	depends on X86_32 && SMP
	help
	  Support for Unisys ES7000 systems.  Say 'Y' here if this kernel is
	  supposed to run on an IA32-based Unisys ES7000 system.
	  Only choose this option if you have such a system, otherwise you
	  should say N here.

config X86_RDC321X
	bool "RDC R-321x SoC"
	depends on X86_32
	select M486
	select X86_REBOOTFIXUPS
	select GENERIC_GPIO
	select LEDS_CLASS
	select LEDS_GPIO
	select NEW_LEDS
	help
	  This option is needed for RDC R-321x system-on-chip, also known
	  as R-8610-(G).
	  If you don't have one of these chips, you should say N here.

config X86_VSMP
	bool "Support for ScaleMP vSMP"
	select PARAVIRT
	depends on X86_64 && !PCI
	help
	  Support for ScaleMP vSMP systems.  Say 'Y' here if this kernel is
	  supposed to run on these EM64T-based machines.  Only choose this option
	  if you have one of these machines.

endchoice

config SCHED_NO_NO_OMIT_FRAME_POINTER
	def_bool y
	prompt "Single-depth WCHAN output"
	depends on X86_32
	help
	  Calculate simpler /proc/<PID>/wchan values. If this option
	  is disabled then wchan values will recurse back to the
	  caller function. This provides more accurate wchan values,
	  at the expense of slightly more scheduling overhead.

	  If in doubt, say "Y".

menuconfig PARAVIRT_GUEST
	bool "Paravirtualized guest support"
	help
	  Say Y here to get to see options related to running Linux under
	  various hypervisors.  This option alone does not add any kernel code.

	  If you say N, all options in this submenu will be skipped and disabled.

if PARAVIRT_GUEST

source "arch/x86/xen/Kconfig"

config VMI
	bool "VMI Guest support"
	select PARAVIRT
	depends on X86_32
	depends on !(X86_VISWS || X86_VOYAGER)
	help
	  VMI provides a paravirtualized interface to the VMware ESX server
	  (it could be used by other hypervisors in theory too, but is not
	  at the moment), by linking the kernel to a GPL-ed ROM module
	  provided by the hypervisor.

config KVM_CLOCK
	bool "KVM paravirtualized clock"
	select PARAVIRT
	select PARAVIRT_CLOCK
	depends on !(X86_VISWS || X86_VOYAGER)
	help
	  Turning on this option will allow you to run a paravirtualized clock
	  when running over the KVM hypervisor. Instead of relying on a PIT
	  (or probably other) emulation by the underlying device model, the host
	  provides the guest with timing infrastructure such as time of day, and
	  system time

config KVM_GUEST
	bool "KVM Guest support"
	select PARAVIRT
	depends on !(X86_VISWS || X86_VOYAGER)
	help
	 This option enables various optimizations for running under the KVM
	 hypervisor.

source "arch/x86/lguest/Kconfig"

config PARAVIRT
	bool "Enable paravirtualization code"
	depends on !(X86_VISWS || X86_VOYAGER)
	help
	  This changes the kernel so it can modify itself when it is run
	  under a hypervisor, potentially improving performance significantly
	  over full virtualization.  However, when run without a hypervisor
	  the kernel is theoretically slower and slightly larger.

config PARAVIRT_CLOCK
	bool
	default n

endif

config MEMTEST
	bool "Memtest"
	depends on X86_64
	default y
	help
	  This option adds a kernel parameter 'memtest', which allows memtest
	  to be set.
		memtest=0, mean disabled; -- default
		memtest=1, mean do 1 test pattern;
		...
		memtest=4, mean do 4 test patterns.
	  If you are unsure how to answer this question, answer Y.

config ACPI_SRAT
	def_bool y
	depends on X86_32 && ACPI && NUMA && (X86_SUMMIT || X86_GENERICARCH)
	select ACPI_NUMA

config HAVE_ARCH_PARSE_SRAT
	def_bool y
	depends on ACPI_SRAT

config X86_SUMMIT_NUMA
	def_bool y
	depends on X86_32 && NUMA && (X86_SUMMIT || X86_GENERICARCH)

config X86_CYCLONE_TIMER
	def_bool y
	depends on X86_32 && X86_SUMMIT || X86_GENERICARCH

config ES7000_CLUSTERED_APIC
	def_bool y
	depends on SMP && X86_ES7000 && MPENTIUMIII

source "arch/x86/Kconfig.cpu"

config HPET_TIMER
	def_bool X86_64
	prompt "HPET Timer Support" if X86_32
	help
         Use the IA-PC HPET (High Precision Event Timer) to manage
         time in preference to the PIT and RTC, if a HPET is
         present.
         HPET is the next generation timer replacing legacy 8254s.
         The HPET provides a stable time base on SMP
         systems, unlike the TSC, but it is more expensive to access,
         as it is off-chip.  You can find the HPET spec at
         <http://www.intel.com/hardwaredesign/hpetspec.htm>.

         You can safely choose Y here.  However, HPET will only be
         activated if the platform and the BIOS support this feature.
         Otherwise the 8254 will be used for timing services.

         Choose N to continue using the legacy 8254 timer.

config HPET_EMULATE_RTC
	def_bool y
	depends on HPET_TIMER && (RTC=y || RTC=m || RTC_DRV_CMOS=m || RTC_DRV_CMOS=y)

# Mark as embedded because too many people got it wrong.
# The code disables itself when not needed.
config DMI
	default y
	bool "Enable DMI scanning" if EMBEDDED
	help
	  Enabled scanning of DMI to identify machine quirks. Say Y
	  here unless you have verified that your setup is not
	  affected by entries in the DMI blacklist. Required by PNP
	  BIOS code.

config GART_IOMMU
	bool "GART IOMMU support" if EMBEDDED
	default y
	select SWIOTLB
	select AGP
	depends on X86_64 && PCI
	help
	  Support for full DMA access of devices with 32bit memory access only
	  on systems with more than 3GB. This is usually needed for USB,
	  sound, many IDE/SATA chipsets and some other devices.
	  Provides a driver for the AMD Athlon64/Opteron/Turion/Sempron GART
	  based hardware IOMMU and a software bounce buffer based IOMMU used
	  on Intel systems and as fallback.
	  The code is only active when needed (enough memory and limited
	  device) unless CONFIG_IOMMU_DEBUG or iommu=force is specified
	  too.

config CALGARY_IOMMU
	bool "IBM Calgary IOMMU support"
	select SWIOTLB
	depends on X86_64 && PCI && EXPERIMENTAL
	help
	  Support for hardware IOMMUs in IBM's xSeries x366 and x460
	  systems. Needed to run systems with more than 3GB of memory
	  properly with 32-bit PCI devices that do not support DAC
	  (Double Address Cycle). Calgary also supports bus level
	  isolation, where all DMAs pass through the IOMMU.  This
	  prevents them from going anywhere except their intended
	  destination. This catches hard-to-find kernel bugs and
	  mis-behaving drivers and devices that do not use the DMA-API
	  properly to set up their DMA buffers.  The IOMMU can be
	  turned off at boot time with the iommu=off parameter.
	  Normally the kernel will make the right choice by itself.