blob: 2e08942339ad0a3d46a4ac22959b6924d68d38e6 [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
29config RWSEM_XCHGADD_ALGORITHM
30 bool
31 default y
32
33config GENERIC_CALIBRATE_DELAY
34 bool
35 default y
36
37config TIME_INTERPOLATION
38 bool
39 default y
40
41config EFI
42 bool
43 default y
44
45config GENERIC_IOMAP
46 bool
47 default y
48
Anton Blanchard7d12e522005-05-05 16:15:11 -070049config SCHED_NO_NO_OMIT_FRAME_POINTER
50 bool
51 default y
52
Jes Sorensenf14f75b2005-06-21 17:15:02 -070053config IA64_UNCACHED_ALLOCATOR
54 bool
55 select GENERIC_ALLOCATOR
56
Linus Torvalds1da177e2005-04-16 15:20:36 -070057choice
58 prompt "System type"
59 default IA64_GENERIC
60
61config IA64_GENERIC
62 bool "generic"
63 select NUMA
64 select ACPI_NUMA
65 select VIRTUAL_MEM_MAP
66 select DISCONTIGMEM
67 help
68 This selects the system type of your hardware. A "generic" kernel
69 will run on any supported IA-64 system. However, if you configure
70 a kernel for your specific system, it will be faster and smaller.
71
72 generic For any supported IA-64 system
73 DIG-compliant For DIG ("Developer's Interface Guide") compliant systems
74 HP-zx1/sx1000 For HP systems
75 HP-zx1/sx1000+swiotlb For HP systems with (broken) DMA-constrained devices.
76 SGI-SN2 For SGI Altix systems
77 Ski-simulator For the HP simulator <http://www.hpl.hp.com/research/linux/ski/>
78
79 If you don't know what to do, choose "generic".
80
81config IA64_DIG
82 bool "DIG-compliant"
83
84config IA64_HP_ZX1
85 bool "HP-zx1/sx1000"
86 help
87 Build a kernel that runs on HP zx1 and sx1000 systems. This adds
88 support for the HP I/O MMU.
89
90config IA64_HP_ZX1_SWIOTLB
91 bool "HP-zx1/sx1000 with software I/O TLB"
92 help
93 Build a kernel that runs on HP zx1 and sx1000 systems even when they
94 have broken PCI devices which cannot DMA to full 32 bits. Apart
95 from support for the HP I/O MMU, this includes support for the software
96 I/O TLB, which allows supporting the broken devices at the expense of
97 wasting some kernel memory (about 2MB by default).
98
99config IA64_SGI_SN2
100 bool "SGI-SN2"
101 help
102 Selecting this option will optimize the kernel for use on sn2 based
103 systems, but the resulting kernel binary will not run on other
104 types of ia64 systems. If you have an SGI Altix system, it's safe
105 to select this option. If in doubt, select ia64 generic support
106 instead.
107
108config IA64_HP_SIM
109 bool "Ski-simulator"
110
111endchoice
112
113choice
114 prompt "Processor type"
115 default ITANIUM
116
117config ITANIUM
118 bool "Itanium"
119 help
120 Select your IA-64 processor type. The default is Itanium.
121 This choice is safe for all IA-64 systems, but may not perform
122 optimally on systems with, say, Itanium 2 or newer processors.
123
124config MCKINLEY
125 bool "Itanium 2"
126 help
127 Select this to configure for an Itanium 2 (McKinley) processor.
128
129endchoice
130
131choice
132 prompt "Kernel page size"
133 default IA64_PAGE_SIZE_16KB
134
135config IA64_PAGE_SIZE_4KB
136 bool "4KB"
137 help
138 This lets you select the page size of the kernel. For best IA-64
139 performance, a page size of 8KB or 16KB is recommended. For best
140 IA-32 compatibility, a page size of 4KB should be selected (the vast
141 majority of IA-32 binaries work perfectly fine with a larger page
142 size). For Itanium 2 or newer systems, a page size of 64KB can also
143 be selected.
144
145 4KB For best IA-32 compatibility
146 8KB For best IA-64 performance
147 16KB For best IA-64 performance
148 64KB Requires Itanium 2 or newer processor.
149
150 If you don't know what to do, choose 16KB.
151
152config IA64_PAGE_SIZE_8KB
153 bool "8KB"
154
155config IA64_PAGE_SIZE_16KB
156 bool "16KB"
157
158config IA64_PAGE_SIZE_64KB
159 depends on !ITANIUM
160 bool "64KB"
161
162endchoice
163
Christoph Lameterb5d23e52005-06-23 00:08:27 -0700164source kernel/Kconfig.hz
165
Linus Torvalds1da177e2005-04-16 15:20:36 -0700166config IA64_BRL_EMU
167 bool
168 depends on ITANIUM
169 default y
170
171# align cache-sensitive data to 128 bytes
172config IA64_L1_CACHE_SHIFT
173 int
174 default "7" if MCKINLEY
175 default "6" if ITANIUM
176
177# align cache-sensitive data to 64 bytes
178config NUMA
179 bool "NUMA support"
180 depends on !IA64_HP_SIM
181 default y if IA64_SGI_SN2
182 select ACPI_NUMA
183 help
184 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
185 Access). This option is for configuring high-end multiprocessor
186 server systems. If in doubt, say N.
187
188config VIRTUAL_MEM_MAP
189 bool "Virtual mem map"
190 default y if !IA64_HP_SIM
191 help
192 Say Y to compile the kernel with support for a virtual mem map.
193 This code also only takes effect if a memory hole of greater than
194 1 Gb is found during boot. You must turn this option on if you
195 require the DISCONTIGMEM option for your machine. If you are
196 unsure, say Y.
197
198config HOLES_IN_ZONE
199 bool
200 default y if VIRTUAL_MEM_MAP
201
Dave Hansen3f22ab22005-06-23 00:07:43 -0700202config ARCH_DISCONTIGMEM_ENABLE
Linus Torvalds1da177e2005-04-16 15:20:36 -0700203 bool "Discontiguous memory support"
204 depends on (IA64_DIG || IA64_SGI_SN2 || IA64_GENERIC || IA64_HP_ZX1 || IA64_HP_ZX1_SWIOTLB) && NUMA && VIRTUAL_MEM_MAP
205 default y if (IA64_SGI_SN2 || IA64_GENERIC) && NUMA
206 help
207 Say Y to support efficient handling of discontiguous physical memory,
208 for architectures which are either NUMA (Non-Uniform Memory Access)
209 or have huge holes in the physical address space for other reasons.
210 See <file:Documentation/vm/numa> for more.
211
212config IA64_CYCLONE
213 bool "Cyclone (EXA) Time Source support"
214 help
215 Say Y here to enable support for IBM EXA Cyclone time source.
216 If you're unsure, answer N.
217
218config IOSAPIC
219 bool
220 depends on !IA64_HP_SIM
221 default y
222
223config IA64_SGI_SN_SIM
224 bool "SGI Medusa Simulator Support"
Greg Edwardsa35f1e02005-06-21 11:30:00 -0700225 depends on IA64_SGI_SN2 || IA64_GENERIC
Linus Torvalds1da177e2005-04-16 15:20:36 -0700226 help
227 If you are compiling a kernel that will run under SGI's IA-64
228 simulator (Medusa) then say Y, otherwise say N.
229
Dean Nelsonb0d82bd2005-03-23 19:46:00 -0700230config IA64_SGI_SN_XP
231 tristate "Support communication between SGI SSIs"
Jes Sorensen65ed0b32005-06-21 17:15:03 -0700232 select IA64_UNCACHED_ALLOCATOR
Dean Nelsonb0d82bd2005-03-23 19:46:00 -0700233 help
234 An SGI machine can be divided into multiple Single System
235 Images which act independently of each other and have
236 hardware based memory protection from the others. Enabling
237 this feature will allow for direct communication between SSIs
238 based on a network adapter and DMA messaging.
239
Linus Torvalds1da177e2005-04-16 15:20:36 -0700240config FORCE_MAX_ZONEORDER
241 int
242 default "18"
243
244config SMP
245 bool "Symmetric multi-processing support"
246 help
247 This enables support for systems with more than one CPU. If you have
248 a system with only one CPU, say N. If you have a system with more
249 than one CPU, say Y.
250
251 If you say N here, the kernel will run on single and multiprocessor
252 systems, but will use only one CPU of a multiprocessor system. If
253 you say Y here, the kernel will run on many, but not all,
254 single processor systems. On a single processor system, the kernel
255 will run faster if you say N here.
256
257 See also the <file:Documentation/smp.txt> and the SMP-HOWTO
258 available at <http://www.tldp.org/docs.html#howto>.
259
260 If you don't know what to do here, say N.
261
262config NR_CPUS
263 int "Maximum number of CPUs (2-512)"
264 range 2 512
265 depends on SMP
266 default "64"
267 help
268 You should set this to the number of CPUs in your system, but
269 keep in mind that a kernel compiled for, e.g., 2 CPUs will boot but
270 only use 2 CPUs on a >2 CPU system. Setting this to a value larger
271 than 64 will cause the use of a CPU mask array, causing a small
272 performance hit.
273
274config HOTPLUG_CPU
275 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
276 depends on SMP && EXPERIMENTAL
277 select HOTPLUG
278 default n
279 ---help---
280 Say Y here to experiment with turning CPUs off and on. CPUs
281 can be controlled through /sys/devices/system/cpu/cpu#.
282 Say N if you want to disable CPU hotplug.
283
Suresh Siddha7a9bdd82005-04-05 18:05:00 -0700284config SCHED_SMT
285 bool "SMT scheduler support"
286 depends on SMP
287 default off
288 help
289 Improves the CPU scheduler's decision making when dealing with
290 Intel IA64 chips with MultiThreading at a cost of slightly increased
291 overhead in some places. If unsure say N here.
292
Linus Torvalds1da177e2005-04-16 15:20:36 -0700293config PREEMPT
294 bool "Preemptible Kernel"
295 help
296 This option reduces the latency of the kernel when reacting to
297 real-time or interactive events by allowing a low priority process to
298 be preempted even if it is in kernel mode executing a system call.
299 This allows applications to run more reliably even when the system is
300 under load.
301
302 Say Y here if you are building a kernel for a desktop, embedded
303 or real-time system. Say N if you are unsure.
304
Dave Hansen3f22ab22005-06-23 00:07:43 -0700305source "mm/Kconfig"
306
Linus Torvalds1da177e2005-04-16 15:20:36 -0700307config HAVE_DEC_LOCK
308 bool
309 depends on (SMP || PREEMPT)
310 default y
311
312config IA32_SUPPORT
313 bool "Support for Linux/x86 binaries"
314 help
315 IA-64 processors can execute IA-32 (X86) instructions. By
316 saying Y here, the kernel will include IA-32 system call
317 emulation support which makes it possible to transparently
318 run IA-32 Linux binaries on an IA-64 Linux system.
319 If in doubt, say Y.
320
321config COMPAT
322 bool
323 depends on IA32_SUPPORT
324 default y
325
326config IA64_MCA_RECOVERY
327 tristate "MCA recovery from errors other than TLB."
328
329config PERFMON
330 bool "Performance monitor support"
331 help
332 Selects whether support for the IA-64 performance monitor hardware
333 is included in the kernel. This makes some kernel data-structures a
334 little bigger and slows down execution a bit, but it is generally
335 a good idea to turn this on. If you're unsure, say Y.
336
337config IA64_PALINFO
338 tristate "/proc/pal support"
339 help
340 If you say Y here, you are able to get PAL (Processor Abstraction
341 Layer) information in /proc/pal. This contains useful information
342 about the processors in your systems, such as cache and TLB sizes
343 and the PAL firmware version in use.
344
345 To use this option, you have to ensure that the "/proc file system
346 support" (CONFIG_PROC_FS) is enabled, too.
347
348config ACPI_DEALLOCATE_IRQ
349 bool
350 depends on IOSAPIC && EXPERIMENTAL
351 default y
352
353source "drivers/firmware/Kconfig"
354
355source "fs/Kconfig.binfmt"
356
357endmenu
358
359menu "Power management and ACPI"
360
361config PM
362 bool "Power Management support"
Jesse Barnes605036c2005-04-25 13:31:04 -0700363 depends on !IA64_HP_SIM
Linus Torvalds1da177e2005-04-16 15:20:36 -0700364 default y
365 help
366 "Power Management" means that parts of your computer are shut
367 off or put into a power conserving "sleep" mode if they are not
368 being used. There are two competing standards for doing this: APM
369 and ACPI. If you want to use either one, say Y here and then also
370 to the requisite support below.
371
372 Power Management is most important for battery powered laptop
373 computers; if you have a laptop, check out the Linux Laptop home
374 page on the WWW at <http://www.linux-on-laptops.com/> and the
375 Battery Powered Linux mini-HOWTO, available from
376 <http://www.tldp.org/docs.html#howto>.
377
378 Note that, even if you say N here, Linux on the x86 architecture
379 will issue the hlt instruction if nothing is to be done, thereby
380 sending the processor to sleep and saving power.
381
382config ACPI
383 bool
384 depends on !IA64_HP_SIM
385 default y
386
387if !IA64_HP_SIM
388
389source "drivers/acpi/Kconfig"
390
391endif
392
393endmenu
394
395if !IA64_HP_SIM
396
397menu "Bus options (PCI, PCMCIA)"
398
399config PCI
400 bool "PCI support"
401 help
402 Find out whether you have a PCI motherboard. PCI is the name of a
403 bus system, i.e. the way the CPU talks to the other stuff inside
404 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
405 VESA. If you have PCI, say Y, otherwise N.
406
407 The PCI-HOWTO, available from
408 <http://www.tldp.org/docs.html#howto>, contains valuable
409 information about which PCI hardware does work under Linux and which
410 doesn't.
411
412config PCI_DOMAINS
413 bool
414 default PCI
415
416source "drivers/pci/Kconfig"
417
418source "drivers/pci/hotplug/Kconfig"
419
420source "drivers/pcmcia/Kconfig"
421
422endmenu
423
424endif
425
Sam Ravnborgd5950b42005-07-11 21:03:49 -0700426source "net/Kconfig"
427
Linus Torvalds1da177e2005-04-16 15:20:36 -0700428source "drivers/Kconfig"
429
430source "fs/Kconfig"
431
432source "lib/Kconfig"
433
434#
435# Use the generic interrupt handling code in kernel/irq/:
436#
437config GENERIC_HARDIRQS
438 bool
439 default y
440
441config GENERIC_IRQ_PROBE
442 bool
443 default y
444
445source "arch/ia64/hp/sim/Kconfig"
446
447source "arch/ia64/oprofile/Kconfig"
448
449source "arch/ia64/Kconfig.debug"
450
451source "security/Kconfig"
452
453source "crypto/Kconfig"