2 # For a description of the syntax of this configuration file,
3 # see Documentation/kbuild/kconfig-language.txt.
6 mainmenu "IA-64 Linux Kernel Configuration"
10 menu "Processor type and features"
14 select PCI if (!IA64_HP_SIM)
15 select ACPI if (!IA64_HP_SIM)
16 select PM if (!IA64_HP_SIM)
17 select ARCH_SUPPORTS_MSI
23 The Itanium Processor Family is Intel's 64-bit successor to
24 the 32-bit X86 line. The IA-64 Linux project has a home
25 page at <http://www.linuxia64.org/> and a mailing list at
26 <linux-ia64@vger.kernel.org>.
30 select ATA_NONSTANDARD if ATA
35 depends on !IA64_SGI_SN2
48 config GENERIC_LOCKBREAK
51 depends on SMP && PREEMPT
53 config RWSEM_XCHGADD_ALGORITHM
57 config ARCH_HAS_ILOG2_U32
61 config ARCH_HAS_ILOG2_U64
65 config HUGETLB_PAGE_SIZE_VARIABLE
67 depends on HUGETLB_PAGE
70 config GENERIC_FIND_NEXT_BIT
74 config GENERIC_CALIBRATE_DELAY
82 config GENERIC_TIME_VSYSCALL
86 config HAVE_SETUP_PER_CPU_AREA
101 config SCHED_NO_NO_OMIT_FRAME_POINTER
105 config IA64_UNCACHED_ALLOCATOR
107 select GENERIC_ALLOCATOR
123 This selects the system type of your hardware. A "generic" kernel
124 will run on any supported IA-64 system. However, if you configure
125 a kernel for your specific system, it will be faster and smaller.
127 generic For any supported IA-64 system
128 DIG-compliant For DIG ("Developer's Interface Guide") compliant systems
129 HP-zx1/sx1000 For HP systems
130 HP-zx1/sx1000+swiotlb For HP systems with (broken) DMA-constrained devices.
131 SGI-SN2 For SGI Altix systems
132 Ski-simulator For the HP simulator <http://www.hpl.hp.com/research/linux/ski/>
134 If you don't know what to do, choose "generic".
143 Build a kernel that runs on HP zx1 and sx1000 systems. This adds
144 support for the HP I/O MMU.
146 config IA64_HP_ZX1_SWIOTLB
147 bool "HP-zx1/sx1000 with software I/O TLB"
150 Build a kernel that runs on HP zx1 and sx1000 systems even when they
151 have broken PCI devices which cannot DMA to full 32 bits. Apart
152 from support for the HP I/O MMU, this includes support for the software
153 I/O TLB, which allows supporting the broken devices at the expense of
154 wasting some kernel memory (about 2MB by default).
159 Selecting this option will optimize the kernel for use on sn2 based
160 systems, but the resulting kernel binary will not run on other
161 types of ia64 systems. If you have an SGI Altix system, it's safe
162 to select this option. If in doubt, select ia64 generic support
172 prompt "Processor type"
178 Select your IA-64 processor type. The default is Itanium.
179 This choice is safe for all IA-64 systems, but may not perform
180 optimally on systems with, say, Itanium 2 or newer processors.
185 Select this to configure for an Itanium 2 (McKinley) processor.
190 prompt "Kernel page size"
191 default IA64_PAGE_SIZE_16KB
193 config IA64_PAGE_SIZE_4KB
196 This lets you select the page size of the kernel. For best IA-64
197 performance, a page size of 8KB or 16KB is recommended. For best
198 IA-32 compatibility, a page size of 4KB should be selected (the vast
199 majority of IA-32 binaries work perfectly fine with a larger page
200 size). For Itanium 2 or newer systems, a page size of 64KB can also
203 4KB For best IA-32 compatibility
204 8KB For best IA-64 performance
205 16KB For best IA-64 performance
206 64KB Requires Itanium 2 or newer processor.
208 If you don't know what to do, choose 16KB.
210 config IA64_PAGE_SIZE_8KB
213 config IA64_PAGE_SIZE_16KB
216 config IA64_PAGE_SIZE_64KB
223 prompt "Page Table Levels"
230 depends on !IA64_PAGE_SIZE_64KB
241 source kernel/Kconfig.hz
249 # align cache-sensitive data to 128 bytes
250 config IA64_L1_CACHE_SHIFT
252 default "7" if MCKINLEY
253 default "6" if ITANIUM
256 bool "Cyclone (EXA) Time Source support"
258 Say Y here to enable support for IBM EXA Cyclone time source.
259 If you're unsure, answer N.
263 depends on !IA64_HP_SIM
266 config IA64_SGI_SN_XP
267 tristate "Support communication between SGI SSIs"
268 depends on IA64_GENERIC || IA64_SGI_SN2
269 select IA64_UNCACHED_ALLOCATOR
271 An SGI machine can be divided into multiple Single System
272 Images which act independently of each other and have
273 hardware based memory protection from the others. Enabling
274 this feature will allow for direct communication between SSIs
275 based on a network adapter and DMA messaging.
277 config FORCE_MAX_ZONEORDER
278 int "MAX_ORDER (11 - 17)" if !HUGETLB_PAGE
279 range 11 17 if !HUGETLB_PAGE
280 default "17" if HUGETLB_PAGE
284 bool "Symmetric multi-processing support"
286 This enables support for systems with more than one CPU. If you have
287 a system with only one CPU, say N. If you have a system with more
290 If you say N here, the kernel will run on single and multiprocessor
291 systems, but will use only one CPU of a multiprocessor system. If
292 you say Y here, the kernel will run on many, but not all,
293 single processor systems. On a single processor system, the kernel
294 will run faster if you say N here.
296 See also the SMP-HOWTO available at
297 <http://www.tldp.org/docs.html#howto>.
299 If you don't know what to do here, say N.
302 int "Maximum number of CPUs (2-1024)"
307 You should set this to the number of CPUs in your system, but
308 keep in mind that a kernel compiled for, e.g., 2 CPUs will boot but
309 only use 2 CPUs on a >2 CPU system. Setting this to a value larger
310 than 64 will cause the use of a CPU mask array, causing a small
314 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
315 depends on SMP && EXPERIMENTAL
319 Say Y here to experiment with turning CPUs off and on. CPUs
320 can be controlled through /sys/devices/system/cpu/cpu#.
321 Say N if you want to disable CPU hotplug.
323 config ARCH_ENABLE_MEMORY_HOTPLUG
326 config ARCH_ENABLE_MEMORY_HOTREMOVE
330 bool "SMT scheduler support"
333 Improves the CPU scheduler's decision making when dealing with
334 Intel IA64 chips with MultiThreading at a cost of slightly increased
335 overhead in some places. If unsure say N here.
337 config PERMIT_BSP_REMOVE
338 bool "Support removal of Bootstrap Processor"
339 depends on HOTPLUG_CPU
342 Say Y here if your platform SAL will support removal of BSP with HOTPLUG_CPU
345 config FORCE_CPEI_RETARGET
346 bool "Force assumption that CPEI can be re-targetted"
347 depends on PERMIT_BSP_REMOVE
350 Say Y if you need to force the assumption that CPEI can be re-targetted to
351 any cpu in the system. This hint is available via ACPI 3.0 specifications.
352 Tiger4 systems are capable of re-directing CPEI to any CPU other than BSP.
353 This option it useful to enable this feature on older BIOS's as well.
354 You can also enable this by using boot command line option force_cpei=1.
356 source "kernel/Kconfig.preempt"
360 config ARCH_SELECT_MEMORY_MODEL
363 config ARCH_DISCONTIGMEM_ENABLE
366 Say Y to support efficient handling of discontiguous physical memory,
367 for architectures which are either NUMA (Non-Uniform Memory Access)
368 or have huge holes in the physical address space for other reasons.
369 See <file:Documentation/vm/numa> for more.
371 config ARCH_FLATMEM_ENABLE
374 config ARCH_SPARSEMEM_ENABLE
376 depends on ARCH_DISCONTIGMEM_ENABLE
377 select SPARSEMEM_VMEMMAP_ENABLE
379 config ARCH_DISCONTIGMEM_DEFAULT
380 def_bool y if (IA64_SGI_SN2 || IA64_GENERIC || IA64_HP_ZX1 || IA64_HP_ZX1_SWIOTLB)
381 depends on ARCH_DISCONTIGMEM_ENABLE
385 depends on !IA64_HP_SIM && !FLATMEM
386 default y if IA64_SGI_SN2
387 select ACPI_NUMA if ACPI
389 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
390 Access). This option is for configuring high-end multiprocessor
391 server systems. If in doubt, say N.
394 int "Max num nodes shift(3-10)"
397 depends on NEED_MULTIPLE_NODES
399 This option specifies the maximum number of nodes in your SSI system.
400 MAX_NUMNODES will be 2^(This value).
401 If in doubt, use the default.
403 config ARCH_POPULATES_NODE_MAP
406 # VIRTUAL_MEM_MAP and FLAT_NODE_MEM_MAP are functionally equivalent.
407 # VIRTUAL_MEM_MAP has been retained for historical reasons.
408 config VIRTUAL_MEM_MAP
409 bool "Virtual mem map"
410 depends on !SPARSEMEM
411 default y if !IA64_HP_SIM
413 Say Y to compile the kernel with support for a virtual mem map.
414 This code also only takes effect if a memory hole of greater than
415 1 Gb is found during boot. You must turn this option on if you
416 require the DISCONTIGMEM option for your machine. If you are
421 default y if VIRTUAL_MEM_MAP
423 config HAVE_ARCH_EARLY_PFN_TO_NID
425 depends on NEED_MULTIPLE_NODES
427 config HAVE_ARCH_NODEDATA_EXTENSION
432 bool "Support for Linux/x86 binaries"
434 IA-64 processors can execute IA-32 (X86) instructions. By
435 saying Y here, the kernel will include IA-32 system call
436 emulation support which makes it possible to transparently
437 run IA-32 Linux binaries on an IA-64 Linux system.
442 depends on IA32_SUPPORT
445 config COMPAT_FOR_U64_ALIGNMENT
448 config IA64_MCA_RECOVERY
449 tristate "MCA recovery from errors other than TLB."
452 bool "Performance monitor support"
454 Selects whether support for the IA-64 performance monitor hardware
455 is included in the kernel. This makes some kernel data-structures a
456 little bigger and slows down execution a bit, but it is generally
457 a good idea to turn this on. If you're unsure, say Y.
460 tristate "/proc/pal support"
462 If you say Y here, you are able to get PAL (Processor Abstraction
463 Layer) information in /proc/pal. This contains useful information
464 about the processors in your systems, such as cache and TLB sizes
465 and the PAL firmware version in use.
467 To use this option, you have to ensure that the "/proc file system
468 support" (CONFIG_PROC_FS) is enabled, too.
470 config IA64_MC_ERR_INJECT
471 tristate "MC error injection support"
473 Adds support for MC error injection. If enabled, the kernel
474 will provide a sysfs interface for user applications to
475 call MC error injection PAL procedures to inject various errors.
476 This is a useful tool for MCA testing.
478 If you're unsure, do not select this option.
481 def_bool y if (IA64_SGI_SN2 || IA64_GENERIC)
484 bool "ESI (Extensible SAL Interface) support"
486 If you say Y here, support is built into the kernel to
487 make ESI calls. ESI calls are used to support vendor-specific
488 firmware extensions, such as the ability to inject memory-errors
489 for test-purposes. If you're unsure, say N.
491 config IA64_HP_AML_NFW
492 bool "Support ACPI AML calls to native firmware"
494 This driver installs a global ACPI Operation Region handler for
495 region 0xA1. AML methods can use this OpRegion to call arbitrary
496 native firmware functions. The driver installs the OpRegion
497 handler if there is an HPQ5001 device or if the user supplies
498 the "force" module parameter, e.g., with the "aml_nfw.force"
499 kernel command line option.
501 source "drivers/sn/Kconfig"
504 bool "kexec system call (EXPERIMENTAL)"
505 depends on EXPERIMENTAL && !IA64_HP_SIM && (!SMP || HOTPLUG_CPU)
507 kexec is a system call that implements the ability to shutdown your
508 current kernel, and to start another kernel. It is like a reboot
509 but it is independent of the system firmware. And like a reboot
510 you can start any kernel with it, not just Linux.
512 The name comes from the similarity to the exec system call.
514 It is an ongoing process to be certain the hardware in a machine
515 is properly shutdown, so do not be surprised if this code does not
516 initially work for you. It may help to enable device hotplugging
517 support. As of this writing the exact hardware interface is
518 strongly in flux, so no good recommendation can be made.
521 bool "kernel crash dumps (EXPERIMENTAL)"
522 depends on EXPERIMENTAL && IA64_MCA_RECOVERY && !IA64_HP_SIM && (!SMP || HOTPLUG_CPU)
524 Generate crash dump after being started by kexec.
526 source "drivers/firmware/Kconfig"
528 source "fs/Kconfig.binfmt"
532 menu "Power management and ACPI"
534 source "kernel/power/Kconfig"
536 source "drivers/acpi/Kconfig"
540 source "arch/ia64/kernel/cpufreq/Kconfig"
548 menu "Bus options (PCI, PCMCIA)"
553 Real IA-64 machines all have PCI/PCI-X/PCI Express busses. Say Y
554 here unless you are using a simulator without PCI support.
562 source "drivers/pci/pcie/Kconfig"
564 source "drivers/pci/Kconfig"
566 source "drivers/pci/hotplug/Kconfig"
568 source "drivers/pcmcia/Kconfig"
576 source "drivers/Kconfig"
579 tristate "Memory special operations driver"
581 select IA64_UNCACHED_ALLOCATOR
583 If you have an ia64 and you want to enable memory special
584 operations support (formerly known as fetchop), say Y here,
592 # Use the generic interrupt handling code in kernel/irq/:
594 config GENERIC_HARDIRQS
598 config GENERIC_IRQ_PROBE
602 config GENERIC_PENDING_IRQ
604 depends on GENERIC_HARDIRQS && SMP
611 source "arch/ia64/hp/sim/Kconfig"
613 source "arch/ia64/Kconfig.debug"
615 source "security/Kconfig"
617 source "crypto/Kconfig"