blob: bc106519482c4a340c6201b80e0d2f345465d7da [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001#
2# For a description of the syntax of this configuration file,
3# see Documentation/kbuild/kconfig-language.txt.
4#
5
6mainmenu "IA-64 Linux Kernel Configuration"
7
8source "init/Kconfig"
9
10menu "Processor type and features"
11
12config IA64
13 bool
14 default y
15 help
16 The Itanium Processor Family is Intel's 64-bit successor to
17 the 32-bit X86 line. The IA-64 Linux project has a home
18 page at <http://www.linuxia64.org/> and a mailing list at
19 <linux-ia64@vger.kernel.org>.
20
21config 64BIT
22 bool
23 default y
24
25config MMU
26 bool
27 default y
28
John W. Linville6c654b52005-09-29 14:42:42 -070029config SWIOTLB
30 bool
31 default y
32
Linus Torvalds1da177e2005-04-16 15:20:36 -070033config RWSEM_XCHGADD_ALGORITHM
34 bool
35 default y
36
Akinobu Mita2875aef2006-03-26 01:39:25 -080037config GENERIC_FIND_NEXT_BIT
38 bool
39 default y
40
Linus Torvalds1da177e2005-04-16 15:20:36 -070041config GENERIC_CALIBRATE_DELAY
42 bool
43 default y
44
45config TIME_INTERPOLATION
46 bool
47 default y
48
Matt Domsch3ed3bce2006-03-26 01:37:03 -080049config DMI
50 bool
51 default y
52
Linus Torvalds1da177e2005-04-16 15:20:36 -070053config EFI
54 bool
55 default y
56
57config GENERIC_IOMAP
58 bool
59 default y
60
Anton Blanchard7d12e522005-05-05 16:15:11 -070061config SCHED_NO_NO_OMIT_FRAME_POINTER
62 bool
63 default y
64
Jes Sorensenf14f75b2005-06-21 17:15:02 -070065config IA64_UNCACHED_ALLOCATOR
66 bool
67 select GENERIC_ALLOCATOR
68
Yasunori Gotoff9569b2005-12-12 00:37:37 -080069config DMA_IS_DMA32
Andi Kleend1e3dfd2005-11-05 17:25:53 +010070 bool
71 default y
72
Linus Torvalds1da177e2005-04-16 15:20:36 -070073choice
74 prompt "System type"
75 default IA64_GENERIC
76
77config IA64_GENERIC
78 bool "generic"
Len Browneb7b6b32005-08-25 12:08:25 -040079 select ACPI
Linus Torvalds1da177e2005-04-16 15:20:36 -070080 select NUMA
81 select ACPI_NUMA
Linus Torvalds1da177e2005-04-16 15:20:36 -070082 help
83 This selects the system type of your hardware. A "generic" kernel
84 will run on any supported IA-64 system. However, if you configure
85 a kernel for your specific system, it will be faster and smaller.
86
87 generic For any supported IA-64 system
88 DIG-compliant For DIG ("Developer's Interface Guide") compliant systems
89 HP-zx1/sx1000 For HP systems
90 HP-zx1/sx1000+swiotlb For HP systems with (broken) DMA-constrained devices.
91 SGI-SN2 For SGI Altix systems
92 Ski-simulator For the HP simulator <http://www.hpl.hp.com/research/linux/ski/>
93
94 If you don't know what to do, choose "generic".
95
96config IA64_DIG
97 bool "DIG-compliant"
98
99config IA64_HP_ZX1
100 bool "HP-zx1/sx1000"
101 help
102 Build a kernel that runs on HP zx1 and sx1000 systems. This adds
103 support for the HP I/O MMU.
104
105config IA64_HP_ZX1_SWIOTLB
106 bool "HP-zx1/sx1000 with software I/O TLB"
107 help
108 Build a kernel that runs on HP zx1 and sx1000 systems even when they
109 have broken PCI devices which cannot DMA to full 32 bits. Apart
110 from support for the HP I/O MMU, this includes support for the software
111 I/O TLB, which allows supporting the broken devices at the expense of
112 wasting some kernel memory (about 2MB by default).
113
114config IA64_SGI_SN2
115 bool "SGI-SN2"
116 help
117 Selecting this option will optimize the kernel for use on sn2 based
118 systems, but the resulting kernel binary will not run on other
119 types of ia64 systems. If you have an SGI Altix system, it's safe
120 to select this option. If in doubt, select ia64 generic support
121 instead.
122
123config IA64_HP_SIM
124 bool "Ski-simulator"
125
126endchoice
127
128choice
129 prompt "Processor type"
130 default ITANIUM
131
132config ITANIUM
133 bool "Itanium"
134 help
135 Select your IA-64 processor type. The default is Itanium.
136 This choice is safe for all IA-64 systems, but may not perform
137 optimally on systems with, say, Itanium 2 or newer processors.
138
139config MCKINLEY
140 bool "Itanium 2"
141 help
142 Select this to configure for an Itanium 2 (McKinley) processor.
143
144endchoice
145
146choice
147 prompt "Kernel page size"
148 default IA64_PAGE_SIZE_16KB
149
150config IA64_PAGE_SIZE_4KB
151 bool "4KB"
152 help
153 This lets you select the page size of the kernel. For best IA-64
154 performance, a page size of 8KB or 16KB is recommended. For best
155 IA-32 compatibility, a page size of 4KB should be selected (the vast
156 majority of IA-32 binaries work perfectly fine with a larger page
157 size). For Itanium 2 or newer systems, a page size of 64KB can also
158 be selected.
159
160 4KB For best IA-32 compatibility
161 8KB For best IA-64 performance
162 16KB For best IA-64 performance
163 64KB Requires Itanium 2 or newer processor.
164
165 If you don't know what to do, choose 16KB.
166
167config IA64_PAGE_SIZE_8KB
168 bool "8KB"
169
170config IA64_PAGE_SIZE_16KB
171 bool "16KB"
172
173config IA64_PAGE_SIZE_64KB
174 depends on !ITANIUM
175 bool "64KB"
176
177endchoice
178
Robin Holt837cd0b2005-11-11 09:35:43 -0600179choice
180 prompt "Page Table Levels"
181 default PGTABLE_3
182
183config PGTABLE_3
184 bool "3 Levels"
185
186config PGTABLE_4
187 depends on !IA64_PAGE_SIZE_64KB
188 bool "4 Levels"
189
190endchoice
191
Christoph Lameterb5d23e52005-06-23 00:08:27 -0700192source kernel/Kconfig.hz
193
Linus Torvalds1da177e2005-04-16 15:20:36 -0700194config IA64_BRL_EMU
195 bool
196 depends on ITANIUM
197 default y
198
199# align cache-sensitive data to 128 bytes
200config IA64_L1_CACHE_SHIFT
201 int
202 default "7" if MCKINLEY
203 default "6" if ITANIUM
204
Linus Torvalds1da177e2005-04-16 15:20:36 -0700205config IA64_CYCLONE
206 bool "Cyclone (EXA) Time Source support"
207 help
208 Say Y here to enable support for IBM EXA Cyclone time source.
209 If you're unsure, answer N.
210
211config IOSAPIC
212 bool
213 depends on !IA64_HP_SIM
214 default y
215
Dean Nelsonb0d82bd2005-03-23 19:46:00 -0700216config IA64_SGI_SN_XP
217 tristate "Support communication between SGI SSIs"
Dean Nelsonf79b3482005-11-01 10:21:51 -0600218 depends on IA64_GENERIC || IA64_SGI_SN2
Jes Sorensen65ed0b32005-06-21 17:15:03 -0700219 select IA64_UNCACHED_ALLOCATOR
Dean Nelsonb0d82bd2005-03-23 19:46:00 -0700220 help
221 An SGI machine can be divided into multiple Single System
222 Images which act independently of each other and have
223 hardware based memory protection from the others. Enabling
224 this feature will allow for direct communication between SSIs
225 based on a network adapter and DMA messaging.
226
Linus Torvalds1da177e2005-04-16 15:20:36 -0700227config FORCE_MAX_ZONEORDER
Bob Piccoda9577c2005-10-04 15:13:37 -0400228 int "MAX_ORDER (11 - 17)" if !HUGETLB_PAGE
229 range 11 17 if !HUGETLB_PAGE
230 default "17" if HUGETLB_PAGE
231 default "11"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700232
233config SMP
234 bool "Symmetric multi-processing support"
235 help
236 This enables support for systems with more than one CPU. If you have
237 a system with only one CPU, say N. If you have a system with more
238 than one CPU, say Y.
239
240 If you say N here, the kernel will run on single and multiprocessor
241 systems, but will use only one CPU of a multiprocessor system. If
242 you say Y here, the kernel will run on many, but not all,
243 single processor systems. On a single processor system, the kernel
244 will run faster if you say N here.
245
246 See also the <file:Documentation/smp.txt> and the SMP-HOWTO
247 available at <http://www.tldp.org/docs.html#howto>.
248
249 If you don't know what to do here, say N.
250
251config NR_CPUS
Jack Steiner54703d32005-09-14 10:33:40 -0500252 int "Maximum number of CPUs (2-1024)"
253 range 2 1024
Linus Torvalds1da177e2005-04-16 15:20:36 -0700254 depends on SMP
255 default "64"
256 help
257 You should set this to the number of CPUs in your system, but
258 keep in mind that a kernel compiled for, e.g., 2 CPUs will boot but
259 only use 2 CPUs on a >2 CPU system. Setting this to a value larger
260 than 64 will cause the use of a CPU mask array, causing a small
261 performance hit.
262
263config HOTPLUG_CPU
264 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
265 depends on SMP && EXPERIMENTAL
266 select HOTPLUG
267 default n
268 ---help---
269 Say Y here to experiment with turning CPUs off and on. CPUs
270 can be controlled through /sys/devices/system/cpu/cpu#.
271 Say N if you want to disable CPU hotplug.
272
Suresh Siddha7a9bdd82005-04-05 18:05:00 -0700273config SCHED_SMT
274 bool "SMT scheduler support"
275 depends on SMP
276 default off
277 help
278 Improves the CPU scheduler's decision making when dealing with
279 Intel IA64 chips with MultiThreading at a cost of slightly increased
280 overhead in some places. If unsure say N here.
281
Ashok Rajff741902005-11-11 14:32:40 -0800282config PERMIT_BSP_REMOVE
283 bool "Support removal of Bootstrap Processor"
284 depends on HOTPLUG_CPU
285 default n
286 ---help---
287 Say Y here if your platform SAL will support removal of BSP with HOTPLUG_CPU
288 support.
289
290config FORCE_CPEI_RETARGET
291 bool "Force assumption that CPEI can be re-targetted"
292 depends on PERMIT_BSP_REMOVE
293 default n
294 ---help---
295 Say Y if you need to force the assumption that CPEI can be re-targetted to
296 any cpu in the system. This hint is available via ACPI 3.0 specifications.
297 Tiger4 systems are capable of re-directing CPEI to any CPU other than BSP.
298 This option it useful to enable this feature on older BIOS's as well.
299 You can also enable this by using boot command line option force_cpei=1.
300
Linus Torvalds1da177e2005-04-16 15:20:36 -0700301config PREEMPT
302 bool "Preemptible Kernel"
303 help
304 This option reduces the latency of the kernel when reacting to
305 real-time or interactive events by allowing a low priority process to
306 be preempted even if it is in kernel mode executing a system call.
307 This allows applications to run more reliably even when the system is
308 under load.
309
310 Say Y here if you are building a kernel for a desktop, embedded
311 or real-time system. Say N if you are unsure.
312
Dave Hansen3f22ab22005-06-23 00:07:43 -0700313source "mm/Kconfig"
314
Bob Piccoda9577c2005-10-04 15:13:37 -0400315config ARCH_SELECT_MEMORY_MODEL
316 def_bool y
317
318config ARCH_DISCONTIGMEM_ENABLE
319 def_bool y
320 help
321 Say Y to support efficient handling of discontiguous physical memory,
322 for architectures which are either NUMA (Non-Uniform Memory Access)
323 or have huge holes in the physical address space for other reasons.
324 See <file:Documentation/vm/numa> for more.
325
326config ARCH_FLATMEM_ENABLE
327 def_bool y
328
329config ARCH_SPARSEMEM_ENABLE
330 def_bool y
331 depends on ARCH_DISCONTIGMEM_ENABLE
332
333config ARCH_DISCONTIGMEM_DEFAULT
334 def_bool y if (IA64_SGI_SN2 || IA64_GENERIC || IA64_HP_ZX1 || IA64_HP_ZX1_SWIOTLB)
335 depends on ARCH_DISCONTIGMEM_ENABLE
336
337config NUMA
338 bool "NUMA support"
339 depends on !IA64_HP_SIM && !FLATMEM
340 default y if IA64_SGI_SN2
341 help
342 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
343 Access). This option is for configuring high-end multiprocessor
344 server systems. If in doubt, say N.
345
Yasunori Gotoc80d79d2006-04-10 22:53:53 -0700346config NODES_SHIFT
347 int "Max num nodes shift(3-10)"
348 range 3 10
349 default "8"
350 depends on NEED_MULTIPLE_NODES
351 help
352 This option specifies the maximum number of nodes in your SSI system.
353 MAX_NUMNODES will be 2^(This value).
354 If in doubt, use the default.
355
Bob Piccoda9577c2005-10-04 15:13:37 -0400356# VIRTUAL_MEM_MAP and FLAT_NODE_MEM_MAP are functionally equivalent.
357# VIRTUAL_MEM_MAP has been retained for historical reasons.
358config VIRTUAL_MEM_MAP
359 bool "Virtual mem map"
360 depends on !SPARSEMEM
361 default y if !IA64_HP_SIM
362 help
363 Say Y to compile the kernel with support for a virtual mem map.
364 This code also only takes effect if a memory hole of greater than
365 1 Gb is found during boot. You must turn this option on if you
366 require the DISCONTIGMEM option for your machine. If you are
367 unsure, say Y.
368
369config HOLES_IN_ZONE
370 bool
371 default y if VIRTUAL_MEM_MAP
372
373config HAVE_ARCH_EARLY_PFN_TO_NID
374 def_bool y
375 depends on NEED_MULTIPLE_NODES
376
Linus Torvalds1da177e2005-04-16 15:20:36 -0700377config IA32_SUPPORT
378 bool "Support for Linux/x86 binaries"
379 help
380 IA-64 processors can execute IA-32 (X86) instructions. By
381 saying Y here, the kernel will include IA-32 system call
382 emulation support which makes it possible to transparently
383 run IA-32 Linux binaries on an IA-64 Linux system.
384 If in doubt, say Y.
385
386config COMPAT
387 bool
388 depends on IA32_SUPPORT
389 default y
390
391config IA64_MCA_RECOVERY
392 tristate "MCA recovery from errors other than TLB."
393
394config PERFMON
395 bool "Performance monitor support"
396 help
397 Selects whether support for the IA-64 performance monitor hardware
398 is included in the kernel. This makes some kernel data-structures a
399 little bigger and slows down execution a bit, but it is generally
400 a good idea to turn this on. If you're unsure, say Y.
401
402config IA64_PALINFO
403 tristate "/proc/pal support"
404 help
405 If you say Y here, you are able to get PAL (Processor Abstraction
406 Layer) information in /proc/pal. This contains useful information
407 about the processors in your systems, such as cache and TLB sizes
408 and the PAL firmware version in use.
409
410 To use this option, you have to ensure that the "/proc file system
411 support" (CONFIG_PROC_FS) is enabled, too.
412
Jes Sorensen466575f2006-01-19 04:54:00 -0500413config SGI_SN
414 def_bool y if (IA64_SGI_SN2 || IA64_GENERIC)
415
David Mosberger-Tang2ab561a2006-06-21 11:19:22 -0700416config IA64_ESI
417 bool "ESI (Extensible SAL Interface) support"
418 help
419 If you say Y here, support is built into the kernel to
420 make ESI calls. ESI calls are used to support vendor-specific
421 firmware extensions, such as the ability to inject memory-errors
422 for test-purposes. If you're unsure, say N.
423
Brent Casavantc1311af2006-04-20 15:38:16 -0500424source "drivers/sn/Kconfig"
425
Linus Torvalds1da177e2005-04-16 15:20:36 -0700426source "drivers/firmware/Kconfig"
427
428source "fs/Kconfig.binfmt"
429
430endmenu
431
432menu "Power management and ACPI"
433
Len Browneb7b6b32005-08-25 12:08:25 -0400434source "kernel/power/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700435
436source "drivers/acpi/Kconfig"
437
Venkatesh Pallipadi4db86992005-07-29 16:15:00 -0700438if PM
439
440source "arch/ia64/kernel/cpufreq/Kconfig"
441
442endif
443
Linus Torvalds1da177e2005-04-16 15:20:36 -0700444endmenu
445
446if !IA64_HP_SIM
447
448menu "Bus options (PCI, PCMCIA)"
449
450config PCI
451 bool "PCI support"
452 help
Christoph Hellwig85f265d2005-08-09 13:38:00 -0700453 Real IA-64 machines all have PCI/PCI-X/PCI Express busses. Say Y
454 here unless you are using a simulator without PCI support.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700455
456config PCI_DOMAINS
457 bool
458 default PCI
459
460source "drivers/pci/Kconfig"
461
462source "drivers/pci/hotplug/Kconfig"
463
464source "drivers/pcmcia/Kconfig"
465
466endmenu
467
468endif
469
Sam Ravnborgd5950b42005-07-11 21:03:49 -0700470source "net/Kconfig"
471
Linus Torvalds1da177e2005-04-16 15:20:36 -0700472source "drivers/Kconfig"
473
474source "fs/Kconfig"
475
476source "lib/Kconfig"
477
478#
479# Use the generic interrupt handling code in kernel/irq/:
480#
481config GENERIC_HARDIRQS
482 bool
483 default y
484
485config GENERIC_IRQ_PROBE
486 bool
487 default y
488
Ashok Raj54d5d422005-09-06 15:16:15 -0700489config GENERIC_PENDING_IRQ
490 bool
491 depends on GENERIC_HARDIRQS && SMP
492 default y
493
Linus Torvalds1da177e2005-04-16 15:20:36 -0700494source "arch/ia64/hp/sim/Kconfig"
495
Prasanna S Panchamukhicd6b0762005-11-07 00:59:14 -0800496menu "Instrumentation Support"
497 depends on EXPERIMENTAL
498
Linus Torvalds1da177e2005-04-16 15:20:36 -0700499source "arch/ia64/oprofile/Kconfig"
500
Prasanna S Panchamukhicd6b0762005-11-07 00:59:14 -0800501config KPROBES
502 bool "Kprobes (EXPERIMENTAL)"
Linus Torvaldsadd2b6f2006-02-26 20:24:40 -0800503 depends on EXPERIMENTAL && MODULES
Prasanna S Panchamukhicd6b0762005-11-07 00:59:14 -0800504 help
505 Kprobes allows you to trap at almost any kernel address and
506 execute a callback function. register_kprobe() establishes
507 a probepoint and specifies the callback. Kprobes is useful
508 for kernel debugging, non-intrusive instrumentation and testing.
509 If in doubt, say "N".
510endmenu
511
Linus Torvalds1da177e2005-04-16 15:20:36 -0700512source "arch/ia64/Kconfig.debug"
513
514source "security/Kconfig"
515
516source "crypto/Kconfig"