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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 | |
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 | ||
21 | config 64BIT | |
22 | bool | |
23 | default y | |
24 | ||
25 | config MMU | |
26 | bool | |
27 | default y | |
28 | ||
6c654b5f JL |
29 | config SWIOTLB |
30 | bool | |
31 | default y | |
32 | ||
1da177e4 LT |
33 | config RWSEM_XCHGADD_ALGORITHM |
34 | bool | |
35 | default y | |
36 | ||
f0d1b0b3 DH |
37 | config ARCH_HAS_ILOG2_U32 |
38 | bool | |
39 | default n | |
40 | ||
41 | config ARCH_HAS_ILOG2_U64 | |
42 | bool | |
43 | default n | |
44 | ||
2875aef8 AM |
45 | config GENERIC_FIND_NEXT_BIT |
46 | bool | |
47 | default y | |
48 | ||
1da177e4 LT |
49 | config GENERIC_CALIBRATE_DELAY |
50 | bool | |
51 | default y | |
52 | ||
53 | config TIME_INTERPOLATION | |
54 | bool | |
55 | default y | |
56 | ||
3ed3bce8 MD |
57 | config DMI |
58 | bool | |
59 | default y | |
60 | ||
1da177e4 LT |
61 | config EFI |
62 | bool | |
63 | default y | |
64 | ||
65 | config GENERIC_IOMAP | |
66 | bool | |
67 | default y | |
68 | ||
7d12e522 AB |
69 | config SCHED_NO_NO_OMIT_FRAME_POINTER |
70 | bool | |
71 | default y | |
72 | ||
f14f75b8 JS |
73 | config IA64_UNCACHED_ALLOCATOR |
74 | bool | |
75 | select GENERIC_ALLOCATOR | |
76 | ||
e65e1fc2 AV |
77 | config AUDIT_ARCH |
78 | bool | |
79 | default y | |
80 | ||
1da177e4 LT |
81 | choice |
82 | prompt "System type" | |
83 | default IA64_GENERIC | |
84 | ||
85 | config IA64_GENERIC | |
86 | bool "generic" | |
eb7b6b32 | 87 | select ACPI |
1300124f | 88 | select PCI |
1da177e4 LT |
89 | select NUMA |
90 | select ACPI_NUMA | |
1da177e4 LT |
91 | help |
92 | This selects the system type of your hardware. A "generic" kernel | |
93 | will run on any supported IA-64 system. However, if you configure | |
94 | a kernel for your specific system, it will be faster and smaller. | |
95 | ||
96 | generic For any supported IA-64 system | |
97 | DIG-compliant For DIG ("Developer's Interface Guide") compliant systems | |
98 | HP-zx1/sx1000 For HP systems | |
99 | HP-zx1/sx1000+swiotlb For HP systems with (broken) DMA-constrained devices. | |
100 | SGI-SN2 For SGI Altix systems | |
101 | Ski-simulator For the HP simulator <http://www.hpl.hp.com/research/linux/ski/> | |
102 | ||
103 | If you don't know what to do, choose "generic". | |
104 | ||
105 | config IA64_DIG | |
106 | bool "DIG-compliant" | |
107 | ||
108 | config IA64_HP_ZX1 | |
109 | bool "HP-zx1/sx1000" | |
110 | help | |
111 | Build a kernel that runs on HP zx1 and sx1000 systems. This adds | |
112 | support for the HP I/O MMU. | |
113 | ||
114 | config IA64_HP_ZX1_SWIOTLB | |
115 | bool "HP-zx1/sx1000 with software I/O TLB" | |
116 | help | |
117 | Build a kernel that runs on HP zx1 and sx1000 systems even when they | |
118 | have broken PCI devices which cannot DMA to full 32 bits. Apart | |
119 | from support for the HP I/O MMU, this includes support for the software | |
120 | I/O TLB, which allows supporting the broken devices at the expense of | |
121 | wasting some kernel memory (about 2MB by default). | |
122 | ||
123 | config IA64_SGI_SN2 | |
124 | bool "SGI-SN2" | |
125 | help | |
126 | Selecting this option will optimize the kernel for use on sn2 based | |
127 | systems, but the resulting kernel binary will not run on other | |
128 | types of ia64 systems. If you have an SGI Altix system, it's safe | |
129 | to select this option. If in doubt, select ia64 generic support | |
130 | instead. | |
131 | ||
132 | config IA64_HP_SIM | |
133 | bool "Ski-simulator" | |
134 | ||
135 | endchoice | |
136 | ||
137 | choice | |
138 | prompt "Processor type" | |
139 | default ITANIUM | |
140 | ||
141 | config ITANIUM | |
142 | bool "Itanium" | |
143 | help | |
144 | Select your IA-64 processor type. The default is Itanium. | |
145 | This choice is safe for all IA-64 systems, but may not perform | |
146 | optimally on systems with, say, Itanium 2 or newer processors. | |
147 | ||
148 | config MCKINLEY | |
149 | bool "Itanium 2" | |
150 | help | |
151 | Select this to configure for an Itanium 2 (McKinley) processor. | |
152 | ||
153 | endchoice | |
154 | ||
155 | choice | |
156 | prompt "Kernel page size" | |
157 | default IA64_PAGE_SIZE_16KB | |
158 | ||
159 | config IA64_PAGE_SIZE_4KB | |
160 | bool "4KB" | |
161 | help | |
162 | This lets you select the page size of the kernel. For best IA-64 | |
163 | performance, a page size of 8KB or 16KB is recommended. For best | |
164 | IA-32 compatibility, a page size of 4KB should be selected (the vast | |
165 | majority of IA-32 binaries work perfectly fine with a larger page | |
166 | size). For Itanium 2 or newer systems, a page size of 64KB can also | |
167 | be selected. | |
168 | ||
169 | 4KB For best IA-32 compatibility | |
170 | 8KB For best IA-64 performance | |
171 | 16KB For best IA-64 performance | |
172 | 64KB Requires Itanium 2 or newer processor. | |
173 | ||
174 | If you don't know what to do, choose 16KB. | |
175 | ||
176 | config IA64_PAGE_SIZE_8KB | |
177 | bool "8KB" | |
178 | ||
179 | config IA64_PAGE_SIZE_16KB | |
180 | bool "16KB" | |
181 | ||
182 | config IA64_PAGE_SIZE_64KB | |
183 | depends on !ITANIUM | |
184 | bool "64KB" | |
185 | ||
186 | endchoice | |
187 | ||
837cd0bd RH |
188 | choice |
189 | prompt "Page Table Levels" | |
190 | default PGTABLE_3 | |
191 | ||
192 | config PGTABLE_3 | |
193 | bool "3 Levels" | |
194 | ||
195 | config PGTABLE_4 | |
196 | depends on !IA64_PAGE_SIZE_64KB | |
197 | bool "4 Levels" | |
198 | ||
199 | endchoice | |
200 | ||
b5d23e5b CL |
201 | source kernel/Kconfig.hz |
202 | ||
1da177e4 LT |
203 | config IA64_BRL_EMU |
204 | bool | |
205 | depends on ITANIUM | |
206 | default y | |
207 | ||
208 | # align cache-sensitive data to 128 bytes | |
209 | config IA64_L1_CACHE_SHIFT | |
210 | int | |
211 | default "7" if MCKINLEY | |
212 | default "6" if ITANIUM | |
213 | ||
1da177e4 LT |
214 | config IA64_CYCLONE |
215 | bool "Cyclone (EXA) Time Source support" | |
216 | help | |
217 | Say Y here to enable support for IBM EXA Cyclone time source. | |
218 | If you're unsure, answer N. | |
219 | ||
220 | config IOSAPIC | |
221 | bool | |
222 | depends on !IA64_HP_SIM | |
223 | default y | |
224 | ||
b0d82bd5 DN |
225 | config IA64_SGI_SN_XP |
226 | tristate "Support communication between SGI SSIs" | |
f79b3488 | 227 | depends on IA64_GENERIC || IA64_SGI_SN2 |
65ed0b33 | 228 | select IA64_UNCACHED_ALLOCATOR |
b0d82bd5 DN |
229 | help |
230 | An SGI machine can be divided into multiple Single System | |
231 | Images which act independently of each other and have | |
232 | hardware based memory protection from the others. Enabling | |
233 | this feature will allow for direct communication between SSIs | |
234 | based on a network adapter and DMA messaging. | |
235 | ||
1da177e4 | 236 | config FORCE_MAX_ZONEORDER |
da9577c5 BP |
237 | int "MAX_ORDER (11 - 17)" if !HUGETLB_PAGE |
238 | range 11 17 if !HUGETLB_PAGE | |
239 | default "17" if HUGETLB_PAGE | |
240 | default "11" | |
1da177e4 LT |
241 | |
242 | config SMP | |
243 | bool "Symmetric multi-processing support" | |
244 | help | |
245 | This enables support for systems with more than one CPU. If you have | |
246 | a system with only one CPU, say N. If you have a system with more | |
247 | than one CPU, say Y. | |
248 | ||
249 | If you say N here, the kernel will run on single and multiprocessor | |
250 | systems, but will use only one CPU of a multiprocessor system. If | |
251 | you say Y here, the kernel will run on many, but not all, | |
252 | single processor systems. On a single processor system, the kernel | |
253 | will run faster if you say N here. | |
254 | ||
255 | See also the <file:Documentation/smp.txt> and the SMP-HOWTO | |
256 | available at <http://www.tldp.org/docs.html#howto>. | |
257 | ||
258 | If you don't know what to do here, say N. | |
259 | ||
260 | config NR_CPUS | |
54703d36 JS |
261 | int "Maximum number of CPUs (2-1024)" |
262 | range 2 1024 | |
1da177e4 | 263 | depends on SMP |
c57d68ca | 264 | default "1024" |
1da177e4 LT |
265 | help |
266 | You should set this to the number of CPUs in your system, but | |
267 | keep in mind that a kernel compiled for, e.g., 2 CPUs will boot but | |
268 | only use 2 CPUs on a >2 CPU system. Setting this to a value larger | |
269 | than 64 will cause the use of a CPU mask array, causing a small | |
270 | performance hit. | |
271 | ||
272 | config 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 | ||
cc57637b YG |
282 | config ARCH_ENABLE_MEMORY_HOTPLUG |
283 | def_bool y | |
284 | ||
7a9bdd88 SS |
285 | config SCHED_SMT |
286 | bool "SMT scheduler support" | |
287 | depends on SMP | |
7a9bdd88 SS |
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 | ||
ff741906 AR |
293 | config PERMIT_BSP_REMOVE |
294 | bool "Support removal of Bootstrap Processor" | |
295 | depends on HOTPLUG_CPU | |
296 | default n | |
297 | ---help--- | |
298 | Say Y here if your platform SAL will support removal of BSP with HOTPLUG_CPU | |
299 | support. | |
300 | ||
301 | config FORCE_CPEI_RETARGET | |
302 | bool "Force assumption that CPEI can be re-targetted" | |
303 | depends on PERMIT_BSP_REMOVE | |
304 | default n | |
305 | ---help--- | |
306 | Say Y if you need to force the assumption that CPEI can be re-targetted to | |
307 | any cpu in the system. This hint is available via ACPI 3.0 specifications. | |
308 | Tiger4 systems are capable of re-directing CPEI to any CPU other than BSP. | |
309 | This option it useful to enable this feature on older BIOS's as well. | |
310 | You can also enable this by using boot command line option force_cpei=1. | |
311 | ||
1da177e4 LT |
312 | config PREEMPT |
313 | bool "Preemptible Kernel" | |
314 | help | |
315 | This option reduces the latency of the kernel when reacting to | |
316 | real-time or interactive events by allowing a low priority process to | |
317 | be preempted even if it is in kernel mode executing a system call. | |
318 | This allows applications to run more reliably even when the system is | |
319 | under load. | |
320 | ||
321 | Say Y here if you are building a kernel for a desktop, embedded | |
322 | or real-time system. Say N if you are unsure. | |
323 | ||
3f22ab27 DH |
324 | source "mm/Kconfig" |
325 | ||
da9577c5 BP |
326 | config ARCH_SELECT_MEMORY_MODEL |
327 | def_bool y | |
328 | ||
329 | config ARCH_DISCONTIGMEM_ENABLE | |
330 | def_bool y | |
331 | help | |
332 | Say Y to support efficient handling of discontiguous physical memory, | |
333 | for architectures which are either NUMA (Non-Uniform Memory Access) | |
334 | or have huge holes in the physical address space for other reasons. | |
335 | See <file:Documentation/vm/numa> for more. | |
336 | ||
337 | config ARCH_FLATMEM_ENABLE | |
338 | def_bool y | |
339 | ||
340 | config ARCH_SPARSEMEM_ENABLE | |
341 | def_bool y | |
342 | depends on ARCH_DISCONTIGMEM_ENABLE | |
343 | ||
344 | config ARCH_DISCONTIGMEM_DEFAULT | |
345 | def_bool y if (IA64_SGI_SN2 || IA64_GENERIC || IA64_HP_ZX1 || IA64_HP_ZX1_SWIOTLB) | |
346 | depends on ARCH_DISCONTIGMEM_ENABLE | |
347 | ||
348 | config NUMA | |
349 | bool "NUMA support" | |
350 | depends on !IA64_HP_SIM && !FLATMEM | |
351 | default y if IA64_SGI_SN2 | |
6c33eb39 | 352 | select ACPI_NUMA if ACPI |
da9577c5 BP |
353 | help |
354 | Say Y to compile the kernel to support NUMA (Non-Uniform Memory | |
355 | Access). This option is for configuring high-end multiprocessor | |
356 | server systems. If in doubt, say N. | |
357 | ||
c80d79d7 YG |
358 | config NODES_SHIFT |
359 | int "Max num nodes shift(3-10)" | |
360 | range 3 10 | |
c57d68ca | 361 | default "10" |
c80d79d7 YG |
362 | depends on NEED_MULTIPLE_NODES |
363 | help | |
364 | This option specifies the maximum number of nodes in your SSI system. | |
365 | MAX_NUMNODES will be 2^(This value). | |
366 | If in doubt, use the default. | |
367 | ||
05e0caad MG |
368 | config ARCH_POPULATES_NODE_MAP |
369 | def_bool y | |
370 | ||
da9577c5 BP |
371 | # VIRTUAL_MEM_MAP and FLAT_NODE_MEM_MAP are functionally equivalent. |
372 | # VIRTUAL_MEM_MAP has been retained for historical reasons. | |
373 | config VIRTUAL_MEM_MAP | |
374 | bool "Virtual mem map" | |
375 | depends on !SPARSEMEM | |
376 | default y if !IA64_HP_SIM | |
377 | help | |
378 | Say Y to compile the kernel with support for a virtual mem map. | |
379 | This code also only takes effect if a memory hole of greater than | |
380 | 1 Gb is found during boot. You must turn this option on if you | |
381 | require the DISCONTIGMEM option for your machine. If you are | |
382 | unsure, say Y. | |
383 | ||
384 | config HOLES_IN_ZONE | |
385 | bool | |
386 | default y if VIRTUAL_MEM_MAP | |
387 | ||
388 | config HAVE_ARCH_EARLY_PFN_TO_NID | |
389 | def_bool y | |
390 | depends on NEED_MULTIPLE_NODES | |
391 | ||
10ad400b YG |
392 | config HAVE_ARCH_NODEDATA_EXTENSION |
393 | def_bool y | |
394 | depends on NUMA | |
395 | ||
1da177e4 LT |
396 | config IA32_SUPPORT |
397 | bool "Support for Linux/x86 binaries" | |
398 | help | |
399 | IA-64 processors can execute IA-32 (X86) instructions. By | |
400 | saying Y here, the kernel will include IA-32 system call | |
401 | emulation support which makes it possible to transparently | |
402 | run IA-32 Linux binaries on an IA-64 Linux system. | |
403 | If in doubt, say Y. | |
404 | ||
405 | config COMPAT | |
406 | bool | |
407 | depends on IA32_SUPPORT | |
408 | default y | |
409 | ||
410 | config IA64_MCA_RECOVERY | |
411 | tristate "MCA recovery from errors other than TLB." | |
412 | ||
413 | config PERFMON | |
414 | bool "Performance monitor support" | |
415 | help | |
416 | Selects whether support for the IA-64 performance monitor hardware | |
417 | is included in the kernel. This makes some kernel data-structures a | |
418 | little bigger and slows down execution a bit, but it is generally | |
419 | a good idea to turn this on. If you're unsure, say Y. | |
420 | ||
421 | config IA64_PALINFO | |
422 | tristate "/proc/pal support" | |
423 | help | |
424 | If you say Y here, you are able to get PAL (Processor Abstraction | |
425 | Layer) information in /proc/pal. This contains useful information | |
426 | about the processors in your systems, such as cache and TLB sizes | |
427 | and the PAL firmware version in use. | |
428 | ||
429 | To use this option, you have to ensure that the "/proc file system | |
430 | support" (CONFIG_PROC_FS) is enabled, too. | |
431 | ||
466575f4 JS |
432 | config SGI_SN |
433 | def_bool y if (IA64_SGI_SN2 || IA64_GENERIC) | |
434 | ||
2ab561a1 DMT |
435 | config IA64_ESI |
436 | bool "ESI (Extensible SAL Interface) support" | |
437 | help | |
438 | If you say Y here, support is built into the kernel to | |
439 | make ESI calls. ESI calls are used to support vendor-specific | |
440 | firmware extensions, such as the ability to inject memory-errors | |
441 | for test-purposes. If you're unsure, say N. | |
442 | ||
c1311af1 BC |
443 | source "drivers/sn/Kconfig" |
444 | ||
a7956113 ZN |
445 | config KEXEC |
446 | bool "kexec system call (EXPERIMENTAL)" | |
447 | depends on EXPERIMENTAL && !IA64_HP_SIM && (!SMP || HOTPLUG_CPU) | |
448 | help | |
449 | kexec is a system call that implements the ability to shutdown your | |
450 | current kernel, and to start another kernel. It is like a reboot | |
451 | but it is indepedent of the system firmware. And like a reboot | |
452 | you can start any kernel with it, not just Linux. | |
453 | ||
454 | The name comes from the similiarity to the exec system call. | |
455 | ||
456 | It is an ongoing process to be certain the hardware in a machine | |
457 | is properly shutdown, so do not be surprised if this code does not | |
458 | initially work for you. It may help to enable device hotplugging | |
459 | support. As of this writing the exact hardware interface is | |
460 | strongly in flux, so no good recommendation can be made. | |
461 | ||
462 | config CRASH_DUMP | |
463 | bool "kernel crash dumps (EXPERIMENTAL)" | |
464 | depends on EXPERIMENTAL && IA64_MCA_RECOVERY && !IA64_HP_SIM && (!SMP || HOTPLUG_CPU) | |
465 | help | |
466 | Generate crash dump after being started by kexec. | |
467 | ||
1da177e4 LT |
468 | source "drivers/firmware/Kconfig" |
469 | ||
470 | source "fs/Kconfig.binfmt" | |
471 | ||
472 | endmenu | |
473 | ||
474 | menu "Power management and ACPI" | |
475 | ||
eb7b6b32 | 476 | source "kernel/power/Kconfig" |
1da177e4 LT |
477 | |
478 | source "drivers/acpi/Kconfig" | |
479 | ||
4db8699b VP |
480 | if PM |
481 | ||
482 | source "arch/ia64/kernel/cpufreq/Kconfig" | |
483 | ||
484 | endif | |
485 | ||
1da177e4 LT |
486 | endmenu |
487 | ||
488 | if !IA64_HP_SIM | |
489 | ||
490 | menu "Bus options (PCI, PCMCIA)" | |
491 | ||
492 | config PCI | |
493 | bool "PCI support" | |
494 | help | |
85f265d8 CH |
495 | Real IA-64 machines all have PCI/PCI-X/PCI Express busses. Say Y |
496 | here unless you are using a simulator without PCI support. | |
1da177e4 LT |
497 | |
498 | config PCI_DOMAINS | |
499 | bool | |
500 | default PCI | |
501 | ||
b7bb575c KK |
502 | source "drivers/pci/pcie/Kconfig" |
503 | ||
1da177e4 LT |
504 | source "drivers/pci/Kconfig" |
505 | ||
506 | source "drivers/pci/hotplug/Kconfig" | |
507 | ||
508 | source "drivers/pcmcia/Kconfig" | |
509 | ||
510 | endmenu | |
511 | ||
512 | endif | |
513 | ||
d5950b43 SR |
514 | source "net/Kconfig" |
515 | ||
1da177e4 LT |
516 | source "drivers/Kconfig" |
517 | ||
1a4b0fc5 JS |
518 | config MSPEC |
519 | tristate "Memory special operations driver" | |
520 | depends on IA64 | |
521 | select IA64_UNCACHED_ALLOCATOR | |
522 | help | |
523 | If you have an ia64 and you want to enable memory special | |
524 | operations support (formerly known as fetchop), say Y here, | |
525 | otherwise say N. | |
526 | ||
1da177e4 LT |
527 | source "fs/Kconfig" |
528 | ||
529 | source "lib/Kconfig" | |
530 | ||
531 | # | |
532 | # Use the generic interrupt handling code in kernel/irq/: | |
533 | # | |
534 | config GENERIC_HARDIRQS | |
535 | bool | |
536 | default y | |
537 | ||
538 | config GENERIC_IRQ_PROBE | |
539 | bool | |
540 | default y | |
541 | ||
54d5d424 AR |
542 | config GENERIC_PENDING_IRQ |
543 | bool | |
544 | depends on GENERIC_HARDIRQS && SMP | |
545 | default y | |
546 | ||
0d7012a9 IM |
547 | config IRQ_PER_CPU |
548 | bool | |
549 | default y | |
550 | ||
1da177e4 LT |
551 | source "arch/ia64/hp/sim/Kconfig" |
552 | ||
cd6b0762 PP |
553 | menu "Instrumentation Support" |
554 | depends on EXPERIMENTAL | |
555 | ||
1da177e4 LT |
556 | source "arch/ia64/oprofile/Kconfig" |
557 | ||
cd6b0762 PP |
558 | config KPROBES |
559 | bool "Kprobes (EXPERIMENTAL)" | |
3a872d89 | 560 | depends on KALLSYMS && EXPERIMENTAL && MODULES |
cd6b0762 PP |
561 | help |
562 | Kprobes allows you to trap at almost any kernel address and | |
563 | execute a callback function. register_kprobe() establishes | |
564 | a probepoint and specifies the callback. Kprobes is useful | |
565 | for kernel debugging, non-intrusive instrumentation and testing. | |
566 | If in doubt, say "N". | |
567 | endmenu | |
568 | ||
1da177e4 LT |
569 | source "arch/ia64/Kconfig.debug" |
570 | ||
571 | source "security/Kconfig" | |
572 | ||
573 | source "crypto/Kconfig" |