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
22 The Itanium Processor Family is Intel's 64-bit successor to
23 the 32-bit X86 line. The IA-64 Linux project has a home
24 page at <http://www.linuxia64.org/> and a mailing list at
25 <linux-ia64@vger.kernel.org>.
29 select ATA_NONSTANDARD if ATA
34 depends on !IA64_SGI_SN2
47 config GENERIC_LOCKBREAK
50 depends on SMP && PREEMPT
52 config RWSEM_XCHGADD_ALGORITHM
56 config ARCH_HAS_ILOG2_U32
60 config ARCH_HAS_ILOG2_U64
64 config HUGETLB_PAGE_SIZE_VARIABLE
66 depends on HUGETLB_PAGE
69 config GENERIC_FIND_NEXT_BIT
73 config GENERIC_CALIBRATE_DELAY
81 config GENERIC_TIME_VSYSCALL
85 config HAVE_SETUP_PER_CPU_AREA
100 config SCHED_NO_NO_OMIT_FRAME_POINTER
104 config IA64_UNCACHED_ALLOCATOR
106 select GENERIC_ALLOCATOR
122 This selects the system type of your hardware. A "generic" kernel
123 will run on any supported IA-64 system. However, if you configure
124 a kernel for your specific system, it will be faster and smaller.
126 generic For any supported IA-64 system
127 DIG-compliant For DIG ("Developer's Interface Guide") compliant systems
128 HP-zx1/sx1000 For HP systems
129 HP-zx1/sx1000+swiotlb For HP systems with (broken) DMA-constrained devices.
130 SGI-SN2 For SGI Altix systems
131 Ski-simulator For the HP simulator <http://www.hpl.hp.com/research/linux/ski/>
133 If you don't know what to do, choose "generic".
142 Build a kernel that runs on HP zx1 and sx1000 systems. This adds
143 support for the HP I/O MMU.
145 config IA64_HP_ZX1_SWIOTLB
146 bool "HP-zx1/sx1000 with software I/O TLB"
149 Build a kernel that runs on HP zx1 and sx1000 systems even when they
150 have broken PCI devices which cannot DMA to full 32 bits. Apart
151 from support for the HP I/O MMU, this includes support for the software
152 I/O TLB, which allows supporting the broken devices at the expense of
153 wasting some kernel memory (about 2MB by default).
158 Selecting this option will optimize the kernel for use on sn2 based
159 systems, but the resulting kernel binary will not run on other
160 types of ia64 systems. If you have an SGI Altix system, it's safe
161 to select this option. If in doubt, select ia64 generic support
171 prompt "Processor type"
177 Select your IA-64 processor type. The default is Itanium.
178 This choice is safe for all IA-64 systems, but may not perform
179 optimally on systems with, say, Itanium 2 or newer processors.
184 Select this to configure for an Itanium 2 (McKinley) processor.
189 prompt "Kernel page size"
190 default IA64_PAGE_SIZE_16KB
192 config IA64_PAGE_SIZE_4KB
195 This lets you select the page size of the kernel. For best IA-64
196 performance, a page size of 8KB or 16KB is recommended. For best
197 IA-32 compatibility, a page size of 4KB should be selected (the vast
198 majority of IA-32 binaries work perfectly fine with a larger page
199 size). For Itanium 2 or newer systems, a page size of 64KB can also
202 4KB For best IA-32 compatibility
203 8KB For best IA-64 performance
204 16KB For best IA-64 performance
205 64KB Requires Itanium 2 or newer processor.
207 If you don't know what to do, choose 16KB.
209 config IA64_PAGE_SIZE_8KB
212 config IA64_PAGE_SIZE_16KB
215 config IA64_PAGE_SIZE_64KB
222 prompt "Page Table Levels"
229 depends on !IA64_PAGE_SIZE_64KB
234 source kernel/Kconfig.hz
241 # align cache-sensitive data to 128 bytes
242 config IA64_L1_CACHE_SHIFT
244 default "7" if MCKINLEY
245 default "6" if ITANIUM
248 bool "Cyclone (EXA) Time Source support"
250 Say Y here to enable support for IBM EXA Cyclone time source.
251 If you're unsure, answer N.
255 depends on !IA64_HP_SIM
258 config IA64_SGI_SN_XP
259 tristate "Support communication between SGI SSIs"
260 depends on IA64_GENERIC || IA64_SGI_SN2
261 select IA64_UNCACHED_ALLOCATOR
263 An SGI machine can be divided into multiple Single System
264 Images which act independently of each other and have
265 hardware based memory protection from the others. Enabling
266 this feature will allow for direct communication between SSIs
267 based on a network adapter and DMA messaging.
269 config FORCE_MAX_ZONEORDER
270 int "MAX_ORDER (11 - 17)" if !HUGETLB_PAGE
271 range 11 17 if !HUGETLB_PAGE
272 default "17" if HUGETLB_PAGE
276 bool "Symmetric multi-processing support"
278 This enables support for systems with more than one CPU. If you have
279 a system with only one CPU, say N. If you have a system with more
282 If you say N here, the kernel will run on single and multiprocessor
283 systems, but will use only one CPU of a multiprocessor system. If
284 you say Y here, the kernel will run on many, but not all,
285 single processor systems. On a single processor system, the kernel
286 will run faster if you say N here.
288 See also the SMP-HOWTO available at
289 <http://www.tldp.org/docs.html#howto>.
291 If you don't know what to do here, say N.
294 int "Maximum number of CPUs (2-1024)"
299 You should set this to the number of CPUs in your system, but
300 keep in mind that a kernel compiled for, e.g., 2 CPUs will boot but
301 only use 2 CPUs on a >2 CPU system. Setting this to a value larger
302 than 64 will cause the use of a CPU mask array, causing a small
306 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
307 depends on SMP && EXPERIMENTAL
311 Say Y here to experiment with turning CPUs off and on. CPUs
312 can be controlled through /sys/devices/system/cpu/cpu#.
313 Say N if you want to disable CPU hotplug.
315 config ARCH_ENABLE_MEMORY_HOTPLUG
318 config ARCH_ENABLE_MEMORY_HOTREMOVE
322 bool "SMT scheduler support"
325 Improves the CPU scheduler's decision making when dealing with
326 Intel IA64 chips with MultiThreading at a cost of slightly increased
327 overhead in some places. If unsure say N here.
329 config PERMIT_BSP_REMOVE
330 bool "Support removal of Bootstrap Processor"
331 depends on HOTPLUG_CPU
334 Say Y here if your platform SAL will support removal of BSP with HOTPLUG_CPU
337 config FORCE_CPEI_RETARGET
338 bool "Force assumption that CPEI can be re-targetted"
339 depends on PERMIT_BSP_REMOVE
342 Say Y if you need to force the assumption that CPEI can be re-targetted to
343 any cpu in the system. This hint is available via ACPI 3.0 specifications.
344 Tiger4 systems are capable of re-directing CPEI to any CPU other than BSP.
345 This option it useful to enable this feature on older BIOS's as well.
346 You can also enable this by using boot command line option force_cpei=1.
348 source "kernel/Kconfig.preempt"
352 config ARCH_SELECT_MEMORY_MODEL
355 config ARCH_DISCONTIGMEM_ENABLE
358 Say Y to support efficient handling of discontiguous physical memory,
359 for architectures which are either NUMA (Non-Uniform Memory Access)
360 or have huge holes in the physical address space for other reasons.
361 See <file:Documentation/vm/numa> for more.
363 config ARCH_FLATMEM_ENABLE
366 config ARCH_SPARSEMEM_ENABLE
368 depends on ARCH_DISCONTIGMEM_ENABLE
369 select SPARSEMEM_VMEMMAP_ENABLE
371 config ARCH_DISCONTIGMEM_DEFAULT
372 def_bool y if (IA64_SGI_SN2 || IA64_GENERIC || IA64_HP_ZX1 || IA64_HP_ZX1_SWIOTLB)
373 depends on ARCH_DISCONTIGMEM_ENABLE
377 depends on !IA64_HP_SIM && !FLATMEM
378 default y if IA64_SGI_SN2
379 select ACPI_NUMA if ACPI
381 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
382 Access). This option is for configuring high-end multiprocessor
383 server systems. If in doubt, say N.
386 int "Max num nodes shift(3-10)"
389 depends on NEED_MULTIPLE_NODES
391 This option specifies the maximum number of nodes in your SSI system.
392 MAX_NUMNODES will be 2^(This value).
393 If in doubt, use the default.
395 config ARCH_POPULATES_NODE_MAP
398 # VIRTUAL_MEM_MAP and FLAT_NODE_MEM_MAP are functionally equivalent.
399 # VIRTUAL_MEM_MAP has been retained for historical reasons.
400 config VIRTUAL_MEM_MAP
401 bool "Virtual mem map"
402 depends on !SPARSEMEM
403 default y if !IA64_HP_SIM
405 Say Y to compile the kernel with support for a virtual mem map.
406 This code also only takes effect if a memory hole of greater than
407 1 Gb is found during boot. You must turn this option on if you
408 require the DISCONTIGMEM option for your machine. If you are
413 default y if VIRTUAL_MEM_MAP
415 config HAVE_ARCH_EARLY_PFN_TO_NID
417 depends on NEED_MULTIPLE_NODES
419 config HAVE_ARCH_NODEDATA_EXTENSION
424 bool "Support for Linux/x86 binaries"
426 IA-64 processors can execute IA-32 (X86) instructions. By
427 saying Y here, the kernel will include IA-32 system call
428 emulation support which makes it possible to transparently
429 run IA-32 Linux binaries on an IA-64 Linux system.
434 depends on IA32_SUPPORT
437 config COMPAT_FOR_U64_ALIGNMENT
440 config IA64_MCA_RECOVERY
441 tristate "MCA recovery from errors other than TLB."
444 bool "Performance monitor support"
446 Selects whether support for the IA-64 performance monitor hardware
447 is included in the kernel. This makes some kernel data-structures a
448 little bigger and slows down execution a bit, but it is generally
449 a good idea to turn this on. If you're unsure, say Y.
452 tristate "/proc/pal support"
454 If you say Y here, you are able to get PAL (Processor Abstraction
455 Layer) information in /proc/pal. This contains useful information
456 about the processors in your systems, such as cache and TLB sizes
457 and the PAL firmware version in use.
459 To use this option, you have to ensure that the "/proc file system
460 support" (CONFIG_PROC_FS) is enabled, too.
462 config IA64_MC_ERR_INJECT
463 tristate "MC error injection support"
465 Adds support for MC error injection. If enabled, the kernel
466 will provide a sysfs interface for user applications to
467 call MC error injection PAL procedures to inject various errors.
468 This is a useful tool for MCA testing.
470 If you're unsure, do not select this option.
473 def_bool y if (IA64_SGI_SN2 || IA64_GENERIC)
476 bool "ESI (Extensible SAL Interface) support"
478 If you say Y here, support is built into the kernel to
479 make ESI calls. ESI calls are used to support vendor-specific
480 firmware extensions, such as the ability to inject memory-errors
481 for test-purposes. If you're unsure, say N.
483 config IA64_HP_AML_NFW
484 bool "Support ACPI AML calls to native firmware"
486 This driver installs a global ACPI Operation Region handler for
487 region 0xA1. AML methods can use this OpRegion to call arbitrary
488 native firmware functions. The driver installs the OpRegion
489 handler if there is an HPQ5001 device or if the user supplies
490 the "force" module parameter, e.g., with the "aml_nfw.force"
491 kernel command line option.
493 source "drivers/sn/Kconfig"
496 bool "kexec system call (EXPERIMENTAL)"
497 depends on EXPERIMENTAL && !IA64_HP_SIM && (!SMP || HOTPLUG_CPU)
499 kexec is a system call that implements the ability to shutdown your
500 current kernel, and to start another kernel. It is like a reboot
501 but it is independent of the system firmware. And like a reboot
502 you can start any kernel with it, not just Linux.
504 The name comes from the similarity to the exec system call.
506 It is an ongoing process to be certain the hardware in a machine
507 is properly shutdown, so do not be surprised if this code does not
508 initially work for you. It may help to enable device hotplugging
509 support. As of this writing the exact hardware interface is
510 strongly in flux, so no good recommendation can be made.
513 bool "kernel crash dumps (EXPERIMENTAL)"
514 depends on EXPERIMENTAL && IA64_MCA_RECOVERY && !IA64_HP_SIM && (!SMP || HOTPLUG_CPU)
516 Generate crash dump after being started by kexec.
518 source "drivers/firmware/Kconfig"
520 source "fs/Kconfig.binfmt"
524 menu "Power management and ACPI"
526 source "kernel/power/Kconfig"
528 source "drivers/acpi/Kconfig"
532 source "arch/ia64/kernel/cpufreq/Kconfig"
540 menu "Bus options (PCI, PCMCIA)"
545 Real IA-64 machines all have PCI/PCI-X/PCI Express busses. Say Y
546 here unless you are using a simulator without PCI support.
554 source "drivers/pci/pcie/Kconfig"
556 source "drivers/pci/Kconfig"
558 source "drivers/pci/hotplug/Kconfig"
560 source "drivers/pcmcia/Kconfig"
568 source "drivers/Kconfig"
571 tristate "Memory special operations driver"
573 select IA64_UNCACHED_ALLOCATOR
575 If you have an ia64 and you want to enable memory special
576 operations support (formerly known as fetchop), say Y here,
584 # Use the generic interrupt handling code in kernel/irq/:
586 config GENERIC_HARDIRQS
590 config GENERIC_IRQ_PROBE
594 config GENERIC_PENDING_IRQ
596 depends on GENERIC_HARDIRQS && SMP
603 source "arch/ia64/hp/sim/Kconfig"
605 source "arch/ia64/Kconfig.debug"
607 source "security/Kconfig"
609 source "crypto/Kconfig"