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).
161 Selecting this option will optimize the kernel for use on sn2 based
162 systems, but the resulting kernel binary will not run on other
163 types of ia64 systems. If you have an SGI Altix system, it's safe
164 to select this option. If in doubt, select ia64 generic support
174 prompt "Processor type"
180 Select your IA-64 processor type. The default is Itanium.
181 This choice is safe for all IA-64 systems, but may not perform
182 optimally on systems with, say, Itanium 2 or newer processors.
187 Select this to configure for an Itanium 2 (McKinley) processor.
192 prompt "Kernel page size"
193 default IA64_PAGE_SIZE_16KB
195 config IA64_PAGE_SIZE_4KB
198 This lets you select the page size of the kernel. For best IA-64
199 performance, a page size of 8KB or 16KB is recommended. For best
200 IA-32 compatibility, a page size of 4KB should be selected (the vast
201 majority of IA-32 binaries work perfectly fine with a larger page
202 size). For Itanium 2 or newer systems, a page size of 64KB can also
205 4KB For best IA-32 compatibility
206 8KB For best IA-64 performance
207 16KB For best IA-64 performance
208 64KB Requires Itanium 2 or newer processor.
210 If you don't know what to do, choose 16KB.
212 config IA64_PAGE_SIZE_8KB
215 config IA64_PAGE_SIZE_16KB
218 config IA64_PAGE_SIZE_64KB
225 prompt "Page Table Levels"
232 depends on !IA64_PAGE_SIZE_64KB
243 source kernel/Kconfig.hz
251 # align cache-sensitive data to 128 bytes
252 config IA64_L1_CACHE_SHIFT
254 default "7" if MCKINLEY
255 default "6" if ITANIUM
258 bool "Cyclone (EXA) Time Source support"
260 Say Y here to enable support for IBM EXA Cyclone time source.
261 If you're unsure, answer N.
265 depends on !IA64_HP_SIM
268 config IA64_SGI_SN_XP
269 tristate "Support communication between SGI SSIs"
270 depends on IA64_GENERIC || IA64_SGI_SN2
271 select IA64_UNCACHED_ALLOCATOR
273 An SGI machine can be divided into multiple Single System
274 Images which act independently of each other and have
275 hardware based memory protection from the others. Enabling
276 this feature will allow for direct communication between SSIs
277 based on a network adapter and DMA messaging.
279 config FORCE_MAX_ZONEORDER
280 int "MAX_ORDER (11 - 17)" if !HUGETLB_PAGE
281 range 11 17 if !HUGETLB_PAGE
282 default "17" if HUGETLB_PAGE
286 bool "Symmetric multi-processing support"
288 This enables support for systems with more than one CPU. If you have
289 a system with only one CPU, say N. If you have a system with more
292 If you say N here, the kernel will run on single and multiprocessor
293 systems, but will use only one CPU of a multiprocessor system. If
294 you say Y here, the kernel will run on many, but not all,
295 single processor systems. On a single processor system, the kernel
296 will run faster if you say N here.
298 See also the SMP-HOWTO available at
299 <http://www.tldp.org/docs.html#howto>.
301 If you don't know what to do here, say N.
304 int "Maximum number of CPUs (2-1024)"
309 You should set this to the number of CPUs in your system, but
310 keep in mind that a kernel compiled for, e.g., 2 CPUs will boot but
311 only use 2 CPUs on a >2 CPU system. Setting this to a value larger
312 than 64 will cause the use of a CPU mask array, causing a small
316 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
317 depends on SMP && EXPERIMENTAL
321 Say Y here to experiment with turning CPUs off and on. CPUs
322 can be controlled through /sys/devices/system/cpu/cpu#.
323 Say N if you want to disable CPU hotplug.
325 config ARCH_ENABLE_MEMORY_HOTPLUG
328 config ARCH_ENABLE_MEMORY_HOTREMOVE
332 bool "SMT scheduler support"
335 Improves the CPU scheduler's decision making when dealing with
336 Intel IA64 chips with MultiThreading at a cost of slightly increased
337 overhead in some places. If unsure say N here.
339 config PERMIT_BSP_REMOVE
340 bool "Support removal of Bootstrap Processor"
341 depends on HOTPLUG_CPU
344 Say Y here if your platform SAL will support removal of BSP with HOTPLUG_CPU
347 config FORCE_CPEI_RETARGET
348 bool "Force assumption that CPEI can be re-targetted"
349 depends on PERMIT_BSP_REMOVE
352 Say Y if you need to force the assumption that CPEI can be re-targetted to
353 any cpu in the system. This hint is available via ACPI 3.0 specifications.
354 Tiger4 systems are capable of re-directing CPEI to any CPU other than BSP.
355 This option it useful to enable this feature on older BIOS's as well.
356 You can also enable this by using boot command line option force_cpei=1.
358 source "kernel/Kconfig.preempt"
362 config ARCH_SELECT_MEMORY_MODEL
365 config ARCH_DISCONTIGMEM_ENABLE
368 Say Y to support efficient handling of discontiguous physical memory,
369 for architectures which are either NUMA (Non-Uniform Memory Access)
370 or have huge holes in the physical address space for other reasons.
371 See <file:Documentation/vm/numa> for more.
373 config ARCH_FLATMEM_ENABLE
376 config ARCH_SPARSEMEM_ENABLE
378 depends on ARCH_DISCONTIGMEM_ENABLE
379 select SPARSEMEM_VMEMMAP_ENABLE
381 config ARCH_DISCONTIGMEM_DEFAULT
382 def_bool y if (IA64_SGI_SN2 || IA64_GENERIC || IA64_HP_ZX1 || IA64_HP_ZX1_SWIOTLB)
383 depends on ARCH_DISCONTIGMEM_ENABLE
387 depends on !IA64_HP_SIM && !FLATMEM
388 default y if IA64_SGI_SN2
389 select ACPI_NUMA if ACPI
391 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
392 Access). This option is for configuring high-end multiprocessor
393 server systems. If in doubt, say N.
396 int "Max num nodes shift(3-10)"
399 depends on NEED_MULTIPLE_NODES
401 This option specifies the maximum number of nodes in your SSI system.
402 MAX_NUMNODES will be 2^(This value).
403 If in doubt, use the default.
405 config ARCH_POPULATES_NODE_MAP
408 # VIRTUAL_MEM_MAP and FLAT_NODE_MEM_MAP are functionally equivalent.
409 # VIRTUAL_MEM_MAP has been retained for historical reasons.
410 config VIRTUAL_MEM_MAP
411 bool "Virtual mem map"
412 depends on !SPARSEMEM
413 default y if !IA64_HP_SIM
415 Say Y to compile the kernel with support for a virtual mem map.
416 This code also only takes effect if a memory hole of greater than
417 1 Gb is found during boot. You must turn this option on if you
418 require the DISCONTIGMEM option for your machine. If you are
423 default y if VIRTUAL_MEM_MAP
425 config HAVE_ARCH_EARLY_PFN_TO_NID
427 depends on NEED_MULTIPLE_NODES
429 config HAVE_ARCH_NODEDATA_EXTENSION
434 bool "Support for Linux/x86 binaries"
436 IA-64 processors can execute IA-32 (X86) instructions. By
437 saying Y here, the kernel will include IA-32 system call
438 emulation support which makes it possible to transparently
439 run IA-32 Linux binaries on an IA-64 Linux system.
444 depends on IA32_SUPPORT
447 config COMPAT_FOR_U64_ALIGNMENT
450 config IA64_MCA_RECOVERY
451 tristate "MCA recovery from errors other than TLB."
454 bool "Performance monitor support"
456 Selects whether support for the IA-64 performance monitor hardware
457 is included in the kernel. This makes some kernel data-structures a
458 little bigger and slows down execution a bit, but it is generally
459 a good idea to turn this on. If you're unsure, say Y.
462 tristate "/proc/pal support"
464 If you say Y here, you are able to get PAL (Processor Abstraction
465 Layer) information in /proc/pal. This contains useful information
466 about the processors in your systems, such as cache and TLB sizes
467 and the PAL firmware version in use.
469 To use this option, you have to ensure that the "/proc file system
470 support" (CONFIG_PROC_FS) is enabled, too.
472 config IA64_MC_ERR_INJECT
473 tristate "MC error injection support"
475 Adds support for MC error injection. If enabled, the kernel
476 will provide a sysfs interface for user applications to
477 call MC error injection PAL procedures to inject various errors.
478 This is a useful tool for MCA testing.
480 If you're unsure, do not select this option.
483 def_bool y if (IA64_SGI_SN2 || IA64_GENERIC)
486 bool "ESI (Extensible SAL Interface) support"
488 If you say Y here, support is built into the kernel to
489 make ESI calls. ESI calls are used to support vendor-specific
490 firmware extensions, such as the ability to inject memory-errors
491 for test-purposes. If you're unsure, say N.
493 config IA64_HP_AML_NFW
494 bool "Support ACPI AML calls to native firmware"
496 This driver installs a global ACPI Operation Region handler for
497 region 0xA1. AML methods can use this OpRegion to call arbitrary
498 native firmware functions. The driver installs the OpRegion
499 handler if there is an HPQ5001 device or if the user supplies
500 the "force" module parameter, e.g., with the "aml_nfw.force"
501 kernel command line option.
503 source "drivers/sn/Kconfig"
506 bool "kexec system call (EXPERIMENTAL)"
507 depends on EXPERIMENTAL && !IA64_HP_SIM && (!SMP || HOTPLUG_CPU)
509 kexec is a system call that implements the ability to shutdown your
510 current kernel, and to start another kernel. It is like a reboot
511 but it is independent of the system firmware. And like a reboot
512 you can start any kernel with it, not just Linux.
514 The name comes from the similarity to the exec system call.
516 It is an ongoing process to be certain the hardware in a machine
517 is properly shutdown, so do not be surprised if this code does not
518 initially work for you. It may help to enable device hotplugging
519 support. As of this writing the exact hardware interface is
520 strongly in flux, so no good recommendation can be made.
523 bool "kernel crash dumps (EXPERIMENTAL)"
524 depends on EXPERIMENTAL && IA64_MCA_RECOVERY && !IA64_HP_SIM && (!SMP || HOTPLUG_CPU)
526 Generate crash dump after being started by kexec.
528 source "drivers/firmware/Kconfig"
530 source "fs/Kconfig.binfmt"
534 menu "Power management and ACPI"
536 source "kernel/power/Kconfig"
538 source "drivers/acpi/Kconfig"
542 source "arch/ia64/kernel/cpufreq/Kconfig"
550 menu "Bus options (PCI, PCMCIA)"
555 Real IA-64 machines all have PCI/PCI-X/PCI Express busses. Say Y
556 here unless you are using a simulator without PCI support.
564 source "drivers/pci/pcie/Kconfig"
566 source "drivers/pci/Kconfig"
568 source "drivers/pci/hotplug/Kconfig"
570 source "drivers/pcmcia/Kconfig"
578 source "drivers/Kconfig"
581 tristate "Memory special operations driver"
583 select IA64_UNCACHED_ALLOCATOR
585 If you have an ia64 and you want to enable memory special
586 operations support (formerly known as fetchop), say Y here,
594 # Use the generic interrupt handling code in kernel/irq/:
596 config GENERIC_HARDIRQS
600 config GENERIC_IRQ_PROBE
604 config GENERIC_PENDING_IRQ
606 depends on GENERIC_HARDIRQS && SMP
613 source "arch/ia64/hp/sim/Kconfig"
615 source "arch/ia64/Kconfig.debug"
617 source "security/Kconfig"
619 source "crypto/Kconfig"