Commit | Line | Data |
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1da177e4 LT |
1 | # |
2 | # For a description of the syntax of this configuration file, | |
3 | # see Documentation/kbuild/kconfig-language.txt. | |
4 | # | |
5 | ||
6 | mainmenu "IA-64 Linux Kernel Configuration" | |
7 | ||
8 | source "init/Kconfig" | |
9 | ||
10 | menu "Processor type and features" | |
11 | ||
12 | config IA64 | |
13 | bool | |
06f87adf LB |
14 | select PCI if (!IA64_HP_SIM) |
15 | select ACPI if (!IA64_HP_SIM) | |
1da177e4 LT |
16 | default y |
17 | help | |
18 | The Itanium Processor Family is Intel's 64-bit successor to | |
19 | the 32-bit X86 line. The IA-64 Linux project has a home | |
20 | page at <http://www.linuxia64.org/> and a mailing list at | |
21 | <linux-ia64@vger.kernel.org>. | |
22 | ||
23 | config 64BIT | |
24 | bool | |
25 | default y | |
26 | ||
66701b14 | 27 | config ZONE_DMA |
09ae1f58 CL |
28 | def_bool y |
29 | depends on !IA64_SGI_SN2 | |
66701b14 | 30 | |
1da177e4 LT |
31 | config MMU |
32 | bool | |
33 | default y | |
34 | ||
6c654b5f JL |
35 | config SWIOTLB |
36 | bool | |
6c654b5f | 37 | |
1da177e4 LT |
38 | config RWSEM_XCHGADD_ALGORITHM |
39 | bool | |
40 | default y | |
41 | ||
f0d1b0b3 DH |
42 | config ARCH_HAS_ILOG2_U32 |
43 | bool | |
44 | default n | |
45 | ||
46 | config ARCH_HAS_ILOG2_U64 | |
47 | bool | |
48 | default n | |
49 | ||
2875aef8 AM |
50 | config GENERIC_FIND_NEXT_BIT |
51 | bool | |
52 | default y | |
53 | ||
1da177e4 LT |
54 | config GENERIC_CALIBRATE_DELAY |
55 | bool | |
56 | default y | |
57 | ||
58 | config TIME_INTERPOLATION | |
59 | bool | |
60 | default y | |
61 | ||
3ed3bce8 MD |
62 | config DMI |
63 | bool | |
64 | default y | |
65 | ||
1da177e4 LT |
66 | config EFI |
67 | bool | |
68 | default y | |
69 | ||
70 | config GENERIC_IOMAP | |
71 | bool | |
72 | default y | |
73 | ||
7d12e522 AB |
74 | config SCHED_NO_NO_OMIT_FRAME_POINTER |
75 | bool | |
76 | default y | |
77 | ||
f14f75b8 JS |
78 | config IA64_UNCACHED_ALLOCATOR |
79 | bool | |
80 | select GENERIC_ALLOCATOR | |
81 | ||
e65e1fc2 AV |
82 | config AUDIT_ARCH |
83 | bool | |
84 | default y | |
85 | ||
1da177e4 LT |
86 | choice |
87 | prompt "System type" | |
88 | default IA64_GENERIC | |
89 | ||
90 | config IA64_GENERIC | |
91 | bool "generic" | |
92 | select NUMA | |
93 | select ACPI_NUMA | |
d1598e05 | 94 | select SWIOTLB |
1da177e4 LT |
95 | help |
96 | This selects the system type of your hardware. A "generic" kernel | |
97 | will run on any supported IA-64 system. However, if you configure | |
98 | a kernel for your specific system, it will be faster and smaller. | |
99 | ||
100 | generic For any supported IA-64 system | |
101 | DIG-compliant For DIG ("Developer's Interface Guide") compliant systems | |
102 | HP-zx1/sx1000 For HP systems | |
103 | HP-zx1/sx1000+swiotlb For HP systems with (broken) DMA-constrained devices. | |
104 | SGI-SN2 For SGI Altix systems | |
105 | Ski-simulator For the HP simulator <http://www.hpl.hp.com/research/linux/ski/> | |
106 | ||
107 | If you don't know what to do, choose "generic". | |
108 | ||
109 | config IA64_DIG | |
110 | bool "DIG-compliant" | |
d1598e05 | 111 | select SWIOTLB |
1da177e4 LT |
112 | |
113 | config IA64_HP_ZX1 | |
114 | bool "HP-zx1/sx1000" | |
115 | help | |
116 | Build a kernel that runs on HP zx1 and sx1000 systems. This adds | |
117 | support for the HP I/O MMU. | |
118 | ||
119 | config IA64_HP_ZX1_SWIOTLB | |
120 | bool "HP-zx1/sx1000 with software I/O TLB" | |
d1598e05 | 121 | select SWIOTLB |
1da177e4 LT |
122 | help |
123 | Build a kernel that runs on HP zx1 and sx1000 systems even when they | |
124 | have broken PCI devices which cannot DMA to full 32 bits. Apart | |
125 | from support for the HP I/O MMU, this includes support for the software | |
126 | I/O TLB, which allows supporting the broken devices at the expense of | |
127 | wasting some kernel memory (about 2MB by default). | |
128 | ||
129 | config IA64_SGI_SN2 | |
130 | bool "SGI-SN2" | |
131 | help | |
132 | Selecting this option will optimize the kernel for use on sn2 based | |
133 | systems, but the resulting kernel binary will not run on other | |
134 | types of ia64 systems. If you have an SGI Altix system, it's safe | |
135 | to select this option. If in doubt, select ia64 generic support | |
136 | instead. | |
137 | ||
138 | config IA64_HP_SIM | |
139 | bool "Ski-simulator" | |
d1598e05 | 140 | select SWIOTLB |
1da177e4 LT |
141 | |
142 | endchoice | |
143 | ||
144 | choice | |
145 | prompt "Processor type" | |
146 | default ITANIUM | |
147 | ||
148 | config ITANIUM | |
149 | bool "Itanium" | |
150 | help | |
151 | Select your IA-64 processor type. The default is Itanium. | |
152 | This choice is safe for all IA-64 systems, but may not perform | |
153 | optimally on systems with, say, Itanium 2 or newer processors. | |
154 | ||
155 | config MCKINLEY | |
156 | bool "Itanium 2" | |
157 | help | |
158 | Select this to configure for an Itanium 2 (McKinley) processor. | |
159 | ||
160 | endchoice | |
161 | ||
162 | choice | |
163 | prompt "Kernel page size" | |
164 | default IA64_PAGE_SIZE_16KB | |
165 | ||
166 | config IA64_PAGE_SIZE_4KB | |
167 | bool "4KB" | |
168 | help | |
169 | This lets you select the page size of the kernel. For best IA-64 | |
170 | performance, a page size of 8KB or 16KB is recommended. For best | |
171 | IA-32 compatibility, a page size of 4KB should be selected (the vast | |
172 | majority of IA-32 binaries work perfectly fine with a larger page | |
173 | size). For Itanium 2 or newer systems, a page size of 64KB can also | |
174 | be selected. | |
175 | ||
176 | 4KB For best IA-32 compatibility | |
177 | 8KB For best IA-64 performance | |
178 | 16KB For best IA-64 performance | |
179 | 64KB Requires Itanium 2 or newer processor. | |
180 | ||
181 | If you don't know what to do, choose 16KB. | |
182 | ||
183 | config IA64_PAGE_SIZE_8KB | |
184 | bool "8KB" | |
185 | ||
186 | config IA64_PAGE_SIZE_16KB | |
187 | bool "16KB" | |
188 | ||
189 | config IA64_PAGE_SIZE_64KB | |
190 | depends on !ITANIUM | |
191 | bool "64KB" | |
192 | ||
193 | endchoice | |
194 | ||
837cd0bd RH |
195 | choice |
196 | prompt "Page Table Levels" | |
197 | default PGTABLE_3 | |
198 | ||
199 | config PGTABLE_3 | |
200 | bool "3 Levels" | |
201 | ||
202 | config PGTABLE_4 | |
203 | depends on !IA64_PAGE_SIZE_64KB | |
204 | bool "4 Levels" | |
205 | ||
206 | endchoice | |
207 | ||
b5d23e5b CL |
208 | source kernel/Kconfig.hz |
209 | ||
1da177e4 LT |
210 | config IA64_BRL_EMU |
211 | bool | |
212 | depends on ITANIUM | |
213 | default y | |
214 | ||
215 | # align cache-sensitive data to 128 bytes | |
216 | config IA64_L1_CACHE_SHIFT | |
217 | int | |
218 | default "7" if MCKINLEY | |
219 | default "6" if ITANIUM | |
220 | ||
1da177e4 LT |
221 | config IA64_CYCLONE |
222 | bool "Cyclone (EXA) Time Source support" | |
223 | help | |
224 | Say Y here to enable support for IBM EXA Cyclone time source. | |
225 | If you're unsure, answer N. | |
226 | ||
227 | config IOSAPIC | |
228 | bool | |
229 | depends on !IA64_HP_SIM | |
230 | default y | |
231 | ||
b0d82bd5 DN |
232 | config IA64_SGI_SN_XP |
233 | tristate "Support communication between SGI SSIs" | |
f79b3488 | 234 | depends on IA64_GENERIC || IA64_SGI_SN2 |
65ed0b33 | 235 | select IA64_UNCACHED_ALLOCATOR |
b0d82bd5 DN |
236 | help |
237 | An SGI machine can be divided into multiple Single System | |
238 | Images which act independently of each other and have | |
239 | hardware based memory protection from the others. Enabling | |
240 | this feature will allow for direct communication between SSIs | |
241 | based on a network adapter and DMA messaging. | |
242 | ||
1da177e4 | 243 | config FORCE_MAX_ZONEORDER |
da9577c5 BP |
244 | int "MAX_ORDER (11 - 17)" if !HUGETLB_PAGE |
245 | range 11 17 if !HUGETLB_PAGE | |
246 | default "17" if HUGETLB_PAGE | |
247 | default "11" | |
1da177e4 LT |
248 | |
249 | config SMP | |
250 | bool "Symmetric multi-processing support" | |
251 | help | |
252 | This enables support for systems with more than one CPU. If you have | |
253 | a system with only one CPU, say N. If you have a system with more | |
254 | than one CPU, say Y. | |
255 | ||
256 | If you say N here, the kernel will run on single and multiprocessor | |
257 | systems, but will use only one CPU of a multiprocessor system. If | |
258 | you say Y here, the kernel will run on many, but not all, | |
259 | single processor systems. On a single processor system, the kernel | |
260 | will run faster if you say N here. | |
261 | ||
262 | See also the <file:Documentation/smp.txt> and the SMP-HOWTO | |
263 | available at <http://www.tldp.org/docs.html#howto>. | |
264 | ||
265 | If you don't know what to do here, say N. | |
266 | ||
267 | config NR_CPUS | |
54703d36 JS |
268 | int "Maximum number of CPUs (2-1024)" |
269 | range 2 1024 | |
1da177e4 | 270 | depends on SMP |
c57d68ca | 271 | default "1024" |
1da177e4 LT |
272 | help |
273 | You should set this to the number of CPUs in your system, but | |
274 | keep in mind that a kernel compiled for, e.g., 2 CPUs will boot but | |
275 | only use 2 CPUs on a >2 CPU system. Setting this to a value larger | |
276 | than 64 will cause the use of a CPU mask array, causing a small | |
277 | performance hit. | |
278 | ||
279 | config HOTPLUG_CPU | |
280 | bool "Support for hot-pluggable CPUs (EXPERIMENTAL)" | |
281 | depends on SMP && EXPERIMENTAL | |
282 | select HOTPLUG | |
283 | default n | |
284 | ---help--- | |
285 | Say Y here to experiment with turning CPUs off and on. CPUs | |
286 | can be controlled through /sys/devices/system/cpu/cpu#. | |
287 | Say N if you want to disable CPU hotplug. | |
288 | ||
cc57637b YG |
289 | config ARCH_ENABLE_MEMORY_HOTPLUG |
290 | def_bool y | |
291 | ||
7a9bdd88 SS |
292 | config SCHED_SMT |
293 | bool "SMT scheduler support" | |
294 | depends on SMP | |
7a9bdd88 SS |
295 | help |
296 | Improves the CPU scheduler's decision making when dealing with | |
297 | Intel IA64 chips with MultiThreading at a cost of slightly increased | |
298 | overhead in some places. If unsure say N here. | |
299 | ||
ff741906 AR |
300 | config PERMIT_BSP_REMOVE |
301 | bool "Support removal of Bootstrap Processor" | |
302 | depends on HOTPLUG_CPU | |
303 | default n | |
304 | ---help--- | |
305 | Say Y here if your platform SAL will support removal of BSP with HOTPLUG_CPU | |
306 | support. | |
307 | ||
308 | config FORCE_CPEI_RETARGET | |
309 | bool "Force assumption that CPEI can be re-targetted" | |
310 | depends on PERMIT_BSP_REMOVE | |
311 | default n | |
312 | ---help--- | |
313 | Say Y if you need to force the assumption that CPEI can be re-targetted to | |
314 | any cpu in the system. This hint is available via ACPI 3.0 specifications. | |
315 | Tiger4 systems are capable of re-directing CPEI to any CPU other than BSP. | |
316 | This option it useful to enable this feature on older BIOS's as well. | |
317 | You can also enable this by using boot command line option force_cpei=1. | |
318 | ||
1da177e4 LT |
319 | config PREEMPT |
320 | bool "Preemptible Kernel" | |
321 | help | |
322 | This option reduces the latency of the kernel when reacting to | |
323 | real-time or interactive events by allowing a low priority process to | |
324 | be preempted even if it is in kernel mode executing a system call. | |
325 | This allows applications to run more reliably even when the system is | |
326 | under load. | |
327 | ||
328 | Say Y here if you are building a kernel for a desktop, embedded | |
329 | or real-time system. Say N if you are unsure. | |
330 | ||
3f22ab27 DH |
331 | source "mm/Kconfig" |
332 | ||
da9577c5 BP |
333 | config ARCH_SELECT_MEMORY_MODEL |
334 | def_bool y | |
335 | ||
336 | config ARCH_DISCONTIGMEM_ENABLE | |
337 | def_bool y | |
338 | help | |
339 | Say Y to support efficient handling of discontiguous physical memory, | |
340 | for architectures which are either NUMA (Non-Uniform Memory Access) | |
341 | or have huge holes in the physical address space for other reasons. | |
342 | See <file:Documentation/vm/numa> for more. | |
343 | ||
344 | config ARCH_FLATMEM_ENABLE | |
345 | def_bool y | |
346 | ||
347 | config ARCH_SPARSEMEM_ENABLE | |
348 | def_bool y | |
349 | depends on ARCH_DISCONTIGMEM_ENABLE | |
350 | ||
351 | config ARCH_DISCONTIGMEM_DEFAULT | |
352 | def_bool y if (IA64_SGI_SN2 || IA64_GENERIC || IA64_HP_ZX1 || IA64_HP_ZX1_SWIOTLB) | |
353 | depends on ARCH_DISCONTIGMEM_ENABLE | |
354 | ||
355 | config NUMA | |
356 | bool "NUMA support" | |
357 | depends on !IA64_HP_SIM && !FLATMEM | |
358 | default y if IA64_SGI_SN2 | |
6c33eb39 | 359 | select ACPI_NUMA if ACPI |
da9577c5 BP |
360 | help |
361 | Say Y to compile the kernel to support NUMA (Non-Uniform Memory | |
362 | Access). This option is for configuring high-end multiprocessor | |
363 | server systems. If in doubt, say N. | |
364 | ||
c80d79d7 YG |
365 | config NODES_SHIFT |
366 | int "Max num nodes shift(3-10)" | |
367 | range 3 10 | |
c57d68ca | 368 | default "10" |
c80d79d7 YG |
369 | depends on NEED_MULTIPLE_NODES |
370 | help | |
371 | This option specifies the maximum number of nodes in your SSI system. | |
372 | MAX_NUMNODES will be 2^(This value). | |
373 | If in doubt, use the default. | |
374 | ||
05e0caad MG |
375 | config ARCH_POPULATES_NODE_MAP |
376 | def_bool y | |
377 | ||
da9577c5 BP |
378 | # VIRTUAL_MEM_MAP and FLAT_NODE_MEM_MAP are functionally equivalent. |
379 | # VIRTUAL_MEM_MAP has been retained for historical reasons. | |
380 | config VIRTUAL_MEM_MAP | |
381 | bool "Virtual mem map" | |
382 | depends on !SPARSEMEM | |
383 | default y if !IA64_HP_SIM | |
384 | help | |
385 | Say Y to compile the kernel with support for a virtual mem map. | |
386 | This code also only takes effect if a memory hole of greater than | |
387 | 1 Gb is found during boot. You must turn this option on if you | |
388 | require the DISCONTIGMEM option for your machine. If you are | |
389 | unsure, say Y. | |
390 | ||
391 | config HOLES_IN_ZONE | |
392 | bool | |
393 | default y if VIRTUAL_MEM_MAP | |
394 | ||
395 | config HAVE_ARCH_EARLY_PFN_TO_NID | |
396 | def_bool y | |
397 | depends on NEED_MULTIPLE_NODES | |
398 | ||
10ad400b YG |
399 | config HAVE_ARCH_NODEDATA_EXTENSION |
400 | def_bool y | |
401 | depends on NUMA | |
402 | ||
1da177e4 LT |
403 | config IA32_SUPPORT |
404 | bool "Support for Linux/x86 binaries" | |
405 | help | |
406 | IA-64 processors can execute IA-32 (X86) instructions. By | |
407 | saying Y here, the kernel will include IA-32 system call | |
408 | emulation support which makes it possible to transparently | |
409 | run IA-32 Linux binaries on an IA-64 Linux system. | |
410 | If in doubt, say Y. | |
411 | ||
412 | config COMPAT | |
413 | bool | |
414 | depends on IA32_SUPPORT | |
415 | default y | |
416 | ||
417 | config IA64_MCA_RECOVERY | |
418 | tristate "MCA recovery from errors other than TLB." | |
419 | ||
420 | config PERFMON | |
421 | bool "Performance monitor support" | |
422 | help | |
423 | Selects whether support for the IA-64 performance monitor hardware | |
424 | is included in the kernel. This makes some kernel data-structures a | |
425 | little bigger and slows down execution a bit, but it is generally | |
426 | a good idea to turn this on. If you're unsure, say Y. | |
427 | ||
428 | config IA64_PALINFO | |
429 | tristate "/proc/pal support" | |
430 | help | |
431 | If you say Y here, you are able to get PAL (Processor Abstraction | |
432 | Layer) information in /proc/pal. This contains useful information | |
433 | about the processors in your systems, such as cache and TLB sizes | |
434 | and the PAL firmware version in use. | |
435 | ||
436 | To use this option, you have to ensure that the "/proc file system | |
437 | support" (CONFIG_PROC_FS) is enabled, too. | |
438 | ||
466575f4 JS |
439 | config SGI_SN |
440 | def_bool y if (IA64_SGI_SN2 || IA64_GENERIC) | |
441 | ||
2ab561a1 DMT |
442 | config IA64_ESI |
443 | bool "ESI (Extensible SAL Interface) support" | |
444 | help | |
445 | If you say Y here, support is built into the kernel to | |
446 | make ESI calls. ESI calls are used to support vendor-specific | |
447 | firmware extensions, such as the ability to inject memory-errors | |
448 | for test-purposes. If you're unsure, say N. | |
449 | ||
c1311af1 BC |
450 | source "drivers/sn/Kconfig" |
451 | ||
a7956113 ZN |
452 | config KEXEC |
453 | bool "kexec system call (EXPERIMENTAL)" | |
454 | depends on EXPERIMENTAL && !IA64_HP_SIM && (!SMP || HOTPLUG_CPU) | |
455 | help | |
456 | kexec is a system call that implements the ability to shutdown your | |
457 | current kernel, and to start another kernel. It is like a reboot | |
458 | but it is indepedent of the system firmware. And like a reboot | |
459 | you can start any kernel with it, not just Linux. | |
460 | ||
461 | The name comes from the similiarity to the exec system call. | |
462 | ||
463 | It is an ongoing process to be certain the hardware in a machine | |
464 | is properly shutdown, so do not be surprised if this code does not | |
465 | initially work for you. It may help to enable device hotplugging | |
466 | support. As of this writing the exact hardware interface is | |
467 | strongly in flux, so no good recommendation can be made. | |
468 | ||
469 | config CRASH_DUMP | |
470 | bool "kernel crash dumps (EXPERIMENTAL)" | |
471 | depends on EXPERIMENTAL && IA64_MCA_RECOVERY && !IA64_HP_SIM && (!SMP || HOTPLUG_CPU) | |
472 | help | |
473 | Generate crash dump after being started by kexec. | |
474 | ||
1da177e4 LT |
475 | source "drivers/firmware/Kconfig" |
476 | ||
477 | source "fs/Kconfig.binfmt" | |
478 | ||
479 | endmenu | |
480 | ||
481 | menu "Power management and ACPI" | |
482 | ||
eb7b6b32 | 483 | source "kernel/power/Kconfig" |
1da177e4 LT |
484 | |
485 | source "drivers/acpi/Kconfig" | |
486 | ||
4db8699b VP |
487 | if PM |
488 | ||
489 | source "arch/ia64/kernel/cpufreq/Kconfig" | |
490 | ||
491 | endif | |
492 | ||
1da177e4 LT |
493 | endmenu |
494 | ||
495 | if !IA64_HP_SIM | |
496 | ||
497 | menu "Bus options (PCI, PCMCIA)" | |
498 | ||
499 | config PCI | |
500 | bool "PCI support" | |
501 | help | |
85f265d8 CH |
502 | Real IA-64 machines all have PCI/PCI-X/PCI Express busses. Say Y |
503 | here unless you are using a simulator without PCI support. | |
1da177e4 LT |
504 | |
505 | config PCI_DOMAINS | |
506 | bool | |
507 | default PCI | |
508 | ||
b7bb575c KK |
509 | source "drivers/pci/pcie/Kconfig" |
510 | ||
1da177e4 LT |
511 | source "drivers/pci/Kconfig" |
512 | ||
513 | source "drivers/pci/hotplug/Kconfig" | |
514 | ||
515 | source "drivers/pcmcia/Kconfig" | |
516 | ||
517 | endmenu | |
518 | ||
519 | endif | |
520 | ||
d5950b43 SR |
521 | source "net/Kconfig" |
522 | ||
1da177e4 LT |
523 | source "drivers/Kconfig" |
524 | ||
1a4b0fc5 JS |
525 | config MSPEC |
526 | tristate "Memory special operations driver" | |
527 | depends on IA64 | |
528 | select IA64_UNCACHED_ALLOCATOR | |
529 | help | |
530 | If you have an ia64 and you want to enable memory special | |
531 | operations support (formerly known as fetchop), say Y here, | |
532 | otherwise say N. | |
533 | ||
1da177e4 LT |
534 | source "fs/Kconfig" |
535 | ||
536 | source "lib/Kconfig" | |
537 | ||
538 | # | |
539 | # Use the generic interrupt handling code in kernel/irq/: | |
540 | # | |
541 | config GENERIC_HARDIRQS | |
542 | bool | |
543 | default y | |
544 | ||
545 | config GENERIC_IRQ_PROBE | |
546 | bool | |
547 | default y | |
548 | ||
54d5d424 AR |
549 | config GENERIC_PENDING_IRQ |
550 | bool | |
551 | depends on GENERIC_HARDIRQS && SMP | |
552 | default y | |
553 | ||
0d7012a9 IM |
554 | config IRQ_PER_CPU |
555 | bool | |
556 | default y | |
557 | ||
1da177e4 LT |
558 | source "arch/ia64/hp/sim/Kconfig" |
559 | ||
cd6b0762 PP |
560 | menu "Instrumentation Support" |
561 | depends on EXPERIMENTAL | |
562 | ||
1da177e4 LT |
563 | source "arch/ia64/oprofile/Kconfig" |
564 | ||
cd6b0762 PP |
565 | config KPROBES |
566 | bool "Kprobes (EXPERIMENTAL)" | |
3a872d89 | 567 | depends on KALLSYMS && EXPERIMENTAL && MODULES |
cd6b0762 PP |
568 | help |
569 | Kprobes allows you to trap at almost any kernel address and | |
570 | execute a callback function. register_kprobe() establishes | |
571 | a probepoint and specifies the callback. Kprobes is useful | |
572 | for kernel debugging, non-intrusive instrumentation and testing. | |
573 | If in doubt, say "N". | |
574 | endmenu | |
575 | ||
1da177e4 LT |
576 | source "arch/ia64/Kconfig.debug" |
577 | ||
578 | source "security/Kconfig" | |
579 | ||
580 | source "crypto/Kconfig" |