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1#
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
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29config SWIOTLB
30 bool
31 default y
32
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33config RWSEM_XCHGADD_ALGORITHM
34 bool
35 default y
36
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37config GENERIC_FIND_NEXT_BIT
38 bool
39 default y
40
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41config GENERIC_CALIBRATE_DELAY
42 bool
43 default y
44
45config TIME_INTERPOLATION
46 bool
47 default y
48
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49config DMI
50 bool
51 default y
52
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53config EFI
54 bool
55 default y
56
57config GENERIC_IOMAP
58 bool
59 default y
60
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61config SCHED_NO_NO_OMIT_FRAME_POINTER
62 bool
63 default y
64
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65config IA64_UNCACHED_ALLOCATOR
66 bool
67 select GENERIC_ALLOCATOR
68
ff9569bc 69config DMA_IS_DMA32
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70 bool
71 default y
72
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73choice
74 prompt "System type"
75 default IA64_GENERIC
76
77config IA64_GENERIC
78 bool "generic"
eb7b6b32 79 select ACPI
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80 select NUMA
81 select ACPI_NUMA
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82 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
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179choice
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
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192source kernel/Kconfig.hz
193
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194config 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
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205config 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
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216config IA64_SGI_SN_XP
217 tristate "Support communication between SGI SSIs"
f79b3488 218 depends on IA64_GENERIC || IA64_SGI_SN2
65ed0b33 219 select IA64_UNCACHED_ALLOCATOR
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220 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
1da177e4 227config FORCE_MAX_ZONEORDER
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228 int "MAX_ORDER (11 - 17)" if !HUGETLB_PAGE
229 range 11 17 if !HUGETLB_PAGE
230 default "17" if HUGETLB_PAGE
231 default "11"
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232
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
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252 int "Maximum number of CPUs (2-1024)"
253 range 2 1024
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254 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
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263config IA64_NR_NODES
264 int "Maximum number of NODEs (256-1024)" if (IA64_SGI_SN2 || IA64_GENERIC)
265 range 256 1024
266 depends on IA64_SGI_SN2 || IA64_GENERIC
267 default "256"
268 help
269 This option specifies the maximum number of nodes in your SSI system.
270 If in doubt, use the default.
271
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272config HOTPLUG_CPU
273 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
274 depends on SMP && EXPERIMENTAL
275 select HOTPLUG
276 default n
277 ---help---
278 Say Y here to experiment with turning CPUs off and on. CPUs
279 can be controlled through /sys/devices/system/cpu/cpu#.
280 Say N if you want to disable CPU hotplug.
281
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282config SCHED_SMT
283 bool "SMT scheduler support"
284 depends on SMP
285 default off
286 help
287 Improves the CPU scheduler's decision making when dealing with
288 Intel IA64 chips with MultiThreading at a cost of slightly increased
289 overhead in some places. If unsure say N here.
290
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291config PERMIT_BSP_REMOVE
292 bool "Support removal of Bootstrap Processor"
293 depends on HOTPLUG_CPU
294 default n
295 ---help---
296 Say Y here if your platform SAL will support removal of BSP with HOTPLUG_CPU
297 support.
298
299config FORCE_CPEI_RETARGET
300 bool "Force assumption that CPEI can be re-targetted"
301 depends on PERMIT_BSP_REMOVE
302 default n
303 ---help---
304 Say Y if you need to force the assumption that CPEI can be re-targetted to
305 any cpu in the system. This hint is available via ACPI 3.0 specifications.
306 Tiger4 systems are capable of re-directing CPEI to any CPU other than BSP.
307 This option it useful to enable this feature on older BIOS's as well.
308 You can also enable this by using boot command line option force_cpei=1.
309
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310config PREEMPT
311 bool "Preemptible Kernel"
312 help
313 This option reduces the latency of the kernel when reacting to
314 real-time or interactive events by allowing a low priority process to
315 be preempted even if it is in kernel mode executing a system call.
316 This allows applications to run more reliably even when the system is
317 under load.
318
319 Say Y here if you are building a kernel for a desktop, embedded
320 or real-time system. Say N if you are unsure.
321
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322source "mm/Kconfig"
323
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324config ARCH_SELECT_MEMORY_MODEL
325 def_bool y
326
327config ARCH_DISCONTIGMEM_ENABLE
328 def_bool y
329 help
330 Say Y to support efficient handling of discontiguous physical memory,
331 for architectures which are either NUMA (Non-Uniform Memory Access)
332 or have huge holes in the physical address space for other reasons.
333 See <file:Documentation/vm/numa> for more.
334
335config ARCH_FLATMEM_ENABLE
336 def_bool y
337
338config ARCH_SPARSEMEM_ENABLE
339 def_bool y
340 depends on ARCH_DISCONTIGMEM_ENABLE
341
342config ARCH_DISCONTIGMEM_DEFAULT
343 def_bool y if (IA64_SGI_SN2 || IA64_GENERIC || IA64_HP_ZX1 || IA64_HP_ZX1_SWIOTLB)
344 depends on ARCH_DISCONTIGMEM_ENABLE
345
346config NUMA
347 bool "NUMA support"
348 depends on !IA64_HP_SIM && !FLATMEM
349 default y if IA64_SGI_SN2
350 help
351 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
352 Access). This option is for configuring high-end multiprocessor
353 server systems. If in doubt, say N.
354
355# VIRTUAL_MEM_MAP and FLAT_NODE_MEM_MAP are functionally equivalent.
356# VIRTUAL_MEM_MAP has been retained for historical reasons.
357config VIRTUAL_MEM_MAP
358 bool "Virtual mem map"
359 depends on !SPARSEMEM
360 default y if !IA64_HP_SIM
361 help
362 Say Y to compile the kernel with support for a virtual mem map.
363 This code also only takes effect if a memory hole of greater than
364 1 Gb is found during boot. You must turn this option on if you
365 require the DISCONTIGMEM option for your machine. If you are
366 unsure, say Y.
367
368config HOLES_IN_ZONE
369 bool
370 default y if VIRTUAL_MEM_MAP
371
372config HAVE_ARCH_EARLY_PFN_TO_NID
373 def_bool y
374 depends on NEED_MULTIPLE_NODES
375
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376config IA32_SUPPORT
377 bool "Support for Linux/x86 binaries"
378 help
379 IA-64 processors can execute IA-32 (X86) instructions. By
380 saying Y here, the kernel will include IA-32 system call
381 emulation support which makes it possible to transparently
382 run IA-32 Linux binaries on an IA-64 Linux system.
383 If in doubt, say Y.
384
385config COMPAT
386 bool
387 depends on IA32_SUPPORT
388 default y
389
390config IA64_MCA_RECOVERY
391 tristate "MCA recovery from errors other than TLB."
392
393config PERFMON
394 bool "Performance monitor support"
395 help
396 Selects whether support for the IA-64 performance monitor hardware
397 is included in the kernel. This makes some kernel data-structures a
398 little bigger and slows down execution a bit, but it is generally
399 a good idea to turn this on. If you're unsure, say Y.
400
401config IA64_PALINFO
402 tristate "/proc/pal support"
403 help
404 If you say Y here, you are able to get PAL (Processor Abstraction
405 Layer) information in /proc/pal. This contains useful information
406 about the processors in your systems, such as cache and TLB sizes
407 and the PAL firmware version in use.
408
409 To use this option, you have to ensure that the "/proc file system
410 support" (CONFIG_PROC_FS) is enabled, too.
411
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412config SGI_SN
413 def_bool y if (IA64_SGI_SN2 || IA64_GENERIC)
414
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415source "drivers/firmware/Kconfig"
416
417source "fs/Kconfig.binfmt"
418
419endmenu
420
421menu "Power management and ACPI"
422
eb7b6b32 423source "kernel/power/Kconfig"
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424
425source "drivers/acpi/Kconfig"
426
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427if PM
428
429source "arch/ia64/kernel/cpufreq/Kconfig"
430
431endif
432
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433endmenu
434
435if !IA64_HP_SIM
436
437menu "Bus options (PCI, PCMCIA)"
438
439config PCI
440 bool "PCI support"
441 help
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442 Real IA-64 machines all have PCI/PCI-X/PCI Express busses. Say Y
443 here unless you are using a simulator without PCI support.
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444
445config PCI_DOMAINS
446 bool
447 default PCI
448
449source "drivers/pci/Kconfig"
450
451source "drivers/pci/hotplug/Kconfig"
452
453source "drivers/pcmcia/Kconfig"
454
455endmenu
456
457endif
458
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459source "net/Kconfig"
460
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461source "drivers/Kconfig"
462
463source "fs/Kconfig"
464
465source "lib/Kconfig"
466
467#
468# Use the generic interrupt handling code in kernel/irq/:
469#
470config GENERIC_HARDIRQS
471 bool
472 default y
473
474config GENERIC_IRQ_PROBE
475 bool
476 default y
477
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478config GENERIC_PENDING_IRQ
479 bool
480 depends on GENERIC_HARDIRQS && SMP
481 default y
482
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483source "arch/ia64/hp/sim/Kconfig"
484
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485menu "Instrumentation Support"
486 depends on EXPERIMENTAL
487
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488source "arch/ia64/oprofile/Kconfig"
489
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490config KPROBES
491 bool "Kprobes (EXPERIMENTAL)"
add2b6fd 492 depends on EXPERIMENTAL && MODULES
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493 help
494 Kprobes allows you to trap at almost any kernel address and
495 execute a callback function. register_kprobe() establishes
496 a probepoint and specifies the callback. Kprobes is useful
497 for kernel debugging, non-intrusive instrumentation and testing.
498 If in doubt, say "N".
499endmenu
500
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501source "arch/ia64/Kconfig.debug"
502
503source "security/Kconfig"
504
505source "crypto/Kconfig"