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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 | ||
2875aef8 AM |
37 | config GENERIC_FIND_NEXT_BIT |
38 | bool | |
39 | default y | |
40 | ||
1da177e4 LT |
41 | config GENERIC_CALIBRATE_DELAY |
42 | bool | |
43 | default y | |
44 | ||
45 | config TIME_INTERPOLATION | |
46 | bool | |
47 | default y | |
48 | ||
3ed3bce8 MD |
49 | config DMI |
50 | bool | |
51 | default y | |
52 | ||
1da177e4 LT |
53 | config EFI |
54 | bool | |
55 | default y | |
56 | ||
57 | config GENERIC_IOMAP | |
58 | bool | |
59 | default y | |
60 | ||
7d12e522 AB |
61 | config SCHED_NO_NO_OMIT_FRAME_POINTER |
62 | bool | |
63 | default y | |
64 | ||
f14f75b8 JS |
65 | config IA64_UNCACHED_ALLOCATOR |
66 | bool | |
67 | select GENERIC_ALLOCATOR | |
68 | ||
ff9569bc | 69 | config DMA_IS_DMA32 |
d1e3dfdc AK |
70 | bool |
71 | default y | |
72 | ||
1da177e4 LT |
73 | choice |
74 | prompt "System type" | |
75 | default IA64_GENERIC | |
76 | ||
77 | config IA64_GENERIC | |
78 | bool "generic" | |
eb7b6b32 | 79 | select ACPI |
1300124f | 80 | select PCI |
1da177e4 LT |
81 | select NUMA |
82 | select ACPI_NUMA | |
1da177e4 LT |
83 | help |
84 | This selects the system type of your hardware. A "generic" kernel | |
85 | will run on any supported IA-64 system. However, if you configure | |
86 | a kernel for your specific system, it will be faster and smaller. | |
87 | ||
88 | generic For any supported IA-64 system | |
89 | DIG-compliant For DIG ("Developer's Interface Guide") compliant systems | |
90 | HP-zx1/sx1000 For HP systems | |
91 | HP-zx1/sx1000+swiotlb For HP systems with (broken) DMA-constrained devices. | |
92 | SGI-SN2 For SGI Altix systems | |
93 | Ski-simulator For the HP simulator <http://www.hpl.hp.com/research/linux/ski/> | |
94 | ||
95 | If you don't know what to do, choose "generic". | |
96 | ||
97 | config IA64_DIG | |
98 | bool "DIG-compliant" | |
99 | ||
100 | config IA64_HP_ZX1 | |
101 | bool "HP-zx1/sx1000" | |
102 | help | |
103 | Build a kernel that runs on HP zx1 and sx1000 systems. This adds | |
104 | support for the HP I/O MMU. | |
105 | ||
106 | config IA64_HP_ZX1_SWIOTLB | |
107 | bool "HP-zx1/sx1000 with software I/O TLB" | |
108 | help | |
109 | Build a kernel that runs on HP zx1 and sx1000 systems even when they | |
110 | have broken PCI devices which cannot DMA to full 32 bits. Apart | |
111 | from support for the HP I/O MMU, this includes support for the software | |
112 | I/O TLB, which allows supporting the broken devices at the expense of | |
113 | wasting some kernel memory (about 2MB by default). | |
114 | ||
115 | config IA64_SGI_SN2 | |
116 | bool "SGI-SN2" | |
117 | help | |
118 | Selecting this option will optimize the kernel for use on sn2 based | |
119 | systems, but the resulting kernel binary will not run on other | |
120 | types of ia64 systems. If you have an SGI Altix system, it's safe | |
121 | to select this option. If in doubt, select ia64 generic support | |
122 | instead. | |
123 | ||
124 | config IA64_HP_SIM | |
125 | bool "Ski-simulator" | |
126 | ||
127 | endchoice | |
128 | ||
129 | choice | |
130 | prompt "Processor type" | |
131 | default ITANIUM | |
132 | ||
133 | config ITANIUM | |
134 | bool "Itanium" | |
135 | help | |
136 | Select your IA-64 processor type. The default is Itanium. | |
137 | This choice is safe for all IA-64 systems, but may not perform | |
138 | optimally on systems with, say, Itanium 2 or newer processors. | |
139 | ||
140 | config MCKINLEY | |
141 | bool "Itanium 2" | |
142 | help | |
143 | Select this to configure for an Itanium 2 (McKinley) processor. | |
144 | ||
145 | endchoice | |
146 | ||
147 | choice | |
148 | prompt "Kernel page size" | |
149 | default IA64_PAGE_SIZE_16KB | |
150 | ||
151 | config IA64_PAGE_SIZE_4KB | |
152 | bool "4KB" | |
153 | help | |
154 | This lets you select the page size of the kernel. For best IA-64 | |
155 | performance, a page size of 8KB or 16KB is recommended. For best | |
156 | IA-32 compatibility, a page size of 4KB should be selected (the vast | |
157 | majority of IA-32 binaries work perfectly fine with a larger page | |
158 | size). For Itanium 2 or newer systems, a page size of 64KB can also | |
159 | be selected. | |
160 | ||
161 | 4KB For best IA-32 compatibility | |
162 | 8KB For best IA-64 performance | |
163 | 16KB For best IA-64 performance | |
164 | 64KB Requires Itanium 2 or newer processor. | |
165 | ||
166 | If you don't know what to do, choose 16KB. | |
167 | ||
168 | config IA64_PAGE_SIZE_8KB | |
169 | bool "8KB" | |
170 | ||
171 | config IA64_PAGE_SIZE_16KB | |
172 | bool "16KB" | |
173 | ||
174 | config IA64_PAGE_SIZE_64KB | |
175 | depends on !ITANIUM | |
176 | bool "64KB" | |
177 | ||
178 | endchoice | |
179 | ||
837cd0bd RH |
180 | choice |
181 | prompt "Page Table Levels" | |
182 | default PGTABLE_3 | |
183 | ||
184 | config PGTABLE_3 | |
185 | bool "3 Levels" | |
186 | ||
187 | config PGTABLE_4 | |
188 | depends on !IA64_PAGE_SIZE_64KB | |
189 | bool "4 Levels" | |
190 | ||
191 | endchoice | |
192 | ||
b5d23e5b CL |
193 | source kernel/Kconfig.hz |
194 | ||
1da177e4 LT |
195 | config IA64_BRL_EMU |
196 | bool | |
197 | depends on ITANIUM | |
198 | default y | |
199 | ||
200 | # align cache-sensitive data to 128 bytes | |
201 | config IA64_L1_CACHE_SHIFT | |
202 | int | |
203 | default "7" if MCKINLEY | |
204 | default "6" if ITANIUM | |
205 | ||
1da177e4 LT |
206 | config IA64_CYCLONE |
207 | bool "Cyclone (EXA) Time Source support" | |
208 | help | |
209 | Say Y here to enable support for IBM EXA Cyclone time source. | |
210 | If you're unsure, answer N. | |
211 | ||
212 | config IOSAPIC | |
213 | bool | |
214 | depends on !IA64_HP_SIM | |
215 | default y | |
216 | ||
b0d82bd5 DN |
217 | config IA64_SGI_SN_XP |
218 | tristate "Support communication between SGI SSIs" | |
f79b3488 | 219 | depends on IA64_GENERIC || IA64_SGI_SN2 |
65ed0b33 | 220 | select IA64_UNCACHED_ALLOCATOR |
b0d82bd5 DN |
221 | help |
222 | An SGI machine can be divided into multiple Single System | |
223 | Images which act independently of each other and have | |
224 | hardware based memory protection from the others. Enabling | |
225 | this feature will allow for direct communication between SSIs | |
226 | based on a network adapter and DMA messaging. | |
227 | ||
1da177e4 | 228 | config FORCE_MAX_ZONEORDER |
da9577c5 BP |
229 | int "MAX_ORDER (11 - 17)" if !HUGETLB_PAGE |
230 | range 11 17 if !HUGETLB_PAGE | |
231 | default "17" if HUGETLB_PAGE | |
232 | default "11" | |
1da177e4 LT |
233 | |
234 | config SMP | |
235 | bool "Symmetric multi-processing support" | |
236 | help | |
237 | This enables support for systems with more than one CPU. If you have | |
238 | a system with only one CPU, say N. If you have a system with more | |
239 | than one CPU, say Y. | |
240 | ||
241 | If you say N here, the kernel will run on single and multiprocessor | |
242 | systems, but will use only one CPU of a multiprocessor system. If | |
243 | you say Y here, the kernel will run on many, but not all, | |
244 | single processor systems. On a single processor system, the kernel | |
245 | will run faster if you say N here. | |
246 | ||
247 | See also the <file:Documentation/smp.txt> and the SMP-HOWTO | |
248 | available at <http://www.tldp.org/docs.html#howto>. | |
249 | ||
250 | If you don't know what to do here, say N. | |
251 | ||
252 | config NR_CPUS | |
54703d36 JS |
253 | int "Maximum number of CPUs (2-1024)" |
254 | range 2 1024 | |
1da177e4 LT |
255 | depends on SMP |
256 | default "64" | |
257 | help | |
258 | You should set this to the number of CPUs in your system, but | |
259 | keep in mind that a kernel compiled for, e.g., 2 CPUs will boot but | |
260 | only use 2 CPUs on a >2 CPU system. Setting this to a value larger | |
261 | than 64 will cause the use of a CPU mask array, causing a small | |
262 | performance hit. | |
263 | ||
264 | config HOTPLUG_CPU | |
265 | bool "Support for hot-pluggable CPUs (EXPERIMENTAL)" | |
266 | depends on SMP && EXPERIMENTAL | |
267 | select HOTPLUG | |
268 | default n | |
269 | ---help--- | |
270 | Say Y here to experiment with turning CPUs off and on. CPUs | |
271 | can be controlled through /sys/devices/system/cpu/cpu#. | |
272 | Say N if you want to disable CPU hotplug. | |
273 | ||
cc57637b YG |
274 | config ARCH_ENABLE_MEMORY_HOTPLUG |
275 | def_bool y | |
276 | ||
7a9bdd88 SS |
277 | config SCHED_SMT |
278 | bool "SMT scheduler support" | |
279 | depends on SMP | |
7a9bdd88 SS |
280 | help |
281 | Improves the CPU scheduler's decision making when dealing with | |
282 | Intel IA64 chips with MultiThreading at a cost of slightly increased | |
283 | overhead in some places. If unsure say N here. | |
284 | ||
ff741906 AR |
285 | config PERMIT_BSP_REMOVE |
286 | bool "Support removal of Bootstrap Processor" | |
287 | depends on HOTPLUG_CPU | |
288 | default n | |
289 | ---help--- | |
290 | Say Y here if your platform SAL will support removal of BSP with HOTPLUG_CPU | |
291 | support. | |
292 | ||
293 | config FORCE_CPEI_RETARGET | |
294 | bool "Force assumption that CPEI can be re-targetted" | |
295 | depends on PERMIT_BSP_REMOVE | |
296 | default n | |
297 | ---help--- | |
298 | Say Y if you need to force the assumption that CPEI can be re-targetted to | |
299 | any cpu in the system. This hint is available via ACPI 3.0 specifications. | |
300 | Tiger4 systems are capable of re-directing CPEI to any CPU other than BSP. | |
301 | This option it useful to enable this feature on older BIOS's as well. | |
302 | You can also enable this by using boot command line option force_cpei=1. | |
303 | ||
1da177e4 LT |
304 | config PREEMPT |
305 | bool "Preemptible Kernel" | |
306 | help | |
307 | This option reduces the latency of the kernel when reacting to | |
308 | real-time or interactive events by allowing a low priority process to | |
309 | be preempted even if it is in kernel mode executing a system call. | |
310 | This allows applications to run more reliably even when the system is | |
311 | under load. | |
312 | ||
313 | Say Y here if you are building a kernel for a desktop, embedded | |
314 | or real-time system. Say N if you are unsure. | |
315 | ||
3f22ab27 DH |
316 | source "mm/Kconfig" |
317 | ||
da9577c5 BP |
318 | config ARCH_SELECT_MEMORY_MODEL |
319 | def_bool y | |
320 | ||
321 | config ARCH_DISCONTIGMEM_ENABLE | |
322 | def_bool y | |
323 | help | |
324 | Say Y to support efficient handling of discontiguous physical memory, | |
325 | for architectures which are either NUMA (Non-Uniform Memory Access) | |
326 | or have huge holes in the physical address space for other reasons. | |
327 | See <file:Documentation/vm/numa> for more. | |
328 | ||
329 | config ARCH_FLATMEM_ENABLE | |
330 | def_bool y | |
331 | ||
332 | config ARCH_SPARSEMEM_ENABLE | |
333 | def_bool y | |
334 | depends on ARCH_DISCONTIGMEM_ENABLE | |
335 | ||
336 | config ARCH_DISCONTIGMEM_DEFAULT | |
337 | def_bool y if (IA64_SGI_SN2 || IA64_GENERIC || IA64_HP_ZX1 || IA64_HP_ZX1_SWIOTLB) | |
338 | depends on ARCH_DISCONTIGMEM_ENABLE | |
339 | ||
340 | config NUMA | |
341 | bool "NUMA support" | |
342 | depends on !IA64_HP_SIM && !FLATMEM | |
343 | default y if IA64_SGI_SN2 | |
344 | help | |
345 | Say Y to compile the kernel to support NUMA (Non-Uniform Memory | |
346 | Access). This option is for configuring high-end multiprocessor | |
347 | server systems. If in doubt, say N. | |
348 | ||
c80d79d7 YG |
349 | config NODES_SHIFT |
350 | int "Max num nodes shift(3-10)" | |
351 | range 3 10 | |
352 | default "8" | |
353 | depends on NEED_MULTIPLE_NODES | |
354 | help | |
355 | This option specifies the maximum number of nodes in your SSI system. | |
356 | MAX_NUMNODES will be 2^(This value). | |
357 | If in doubt, use the default. | |
358 | ||
da9577c5 BP |
359 | # VIRTUAL_MEM_MAP and FLAT_NODE_MEM_MAP are functionally equivalent. |
360 | # VIRTUAL_MEM_MAP has been retained for historical reasons. | |
361 | config VIRTUAL_MEM_MAP | |
362 | bool "Virtual mem map" | |
363 | depends on !SPARSEMEM | |
364 | default y if !IA64_HP_SIM | |
365 | help | |
366 | Say Y to compile the kernel with support for a virtual mem map. | |
367 | This code also only takes effect if a memory hole of greater than | |
368 | 1 Gb is found during boot. You must turn this option on if you | |
369 | require the DISCONTIGMEM option for your machine. If you are | |
370 | unsure, say Y. | |
371 | ||
372 | config HOLES_IN_ZONE | |
373 | bool | |
374 | default y if VIRTUAL_MEM_MAP | |
375 | ||
376 | config HAVE_ARCH_EARLY_PFN_TO_NID | |
377 | def_bool y | |
378 | depends on NEED_MULTIPLE_NODES | |
379 | ||
10ad400b YG |
380 | config HAVE_ARCH_NODEDATA_EXTENSION |
381 | def_bool y | |
382 | depends on NUMA | |
383 | ||
1da177e4 LT |
384 | config IA32_SUPPORT |
385 | bool "Support for Linux/x86 binaries" | |
386 | help | |
387 | IA-64 processors can execute IA-32 (X86) instructions. By | |
388 | saying Y here, the kernel will include IA-32 system call | |
389 | emulation support which makes it possible to transparently | |
390 | run IA-32 Linux binaries on an IA-64 Linux system. | |
391 | If in doubt, say Y. | |
392 | ||
393 | config COMPAT | |
394 | bool | |
395 | depends on IA32_SUPPORT | |
396 | default y | |
397 | ||
398 | config IA64_MCA_RECOVERY | |
399 | tristate "MCA recovery from errors other than TLB." | |
400 | ||
401 | config PERFMON | |
402 | bool "Performance monitor support" | |
403 | help | |
404 | Selects whether support for the IA-64 performance monitor hardware | |
405 | is included in the kernel. This makes some kernel data-structures a | |
406 | little bigger and slows down execution a bit, but it is generally | |
407 | a good idea to turn this on. If you're unsure, say Y. | |
408 | ||
409 | config IA64_PALINFO | |
410 | tristate "/proc/pal support" | |
411 | help | |
412 | If you say Y here, you are able to get PAL (Processor Abstraction | |
413 | Layer) information in /proc/pal. This contains useful information | |
414 | about the processors in your systems, such as cache and TLB sizes | |
415 | and the PAL firmware version in use. | |
416 | ||
417 | To use this option, you have to ensure that the "/proc file system | |
418 | support" (CONFIG_PROC_FS) is enabled, too. | |
419 | ||
466575f4 JS |
420 | config SGI_SN |
421 | def_bool y if (IA64_SGI_SN2 || IA64_GENERIC) | |
422 | ||
c1311af1 BC |
423 | source "drivers/sn/Kconfig" |
424 | ||
1da177e4 LT |
425 | source "drivers/firmware/Kconfig" |
426 | ||
427 | source "fs/Kconfig.binfmt" | |
428 | ||
429 | endmenu | |
430 | ||
431 | menu "Power management and ACPI" | |
432 | ||
eb7b6b32 | 433 | source "kernel/power/Kconfig" |
1da177e4 LT |
434 | |
435 | source "drivers/acpi/Kconfig" | |
436 | ||
4db8699b VP |
437 | if PM |
438 | ||
439 | source "arch/ia64/kernel/cpufreq/Kconfig" | |
440 | ||
441 | endif | |
442 | ||
1da177e4 LT |
443 | endmenu |
444 | ||
445 | if !IA64_HP_SIM | |
446 | ||
447 | menu "Bus options (PCI, PCMCIA)" | |
448 | ||
449 | config PCI | |
450 | bool "PCI support" | |
451 | help | |
85f265d8 CH |
452 | Real IA-64 machines all have PCI/PCI-X/PCI Express busses. Say Y |
453 | here unless you are using a simulator without PCI support. | |
1da177e4 LT |
454 | |
455 | config PCI_DOMAINS | |
456 | bool | |
457 | default PCI | |
458 | ||
b7bb575c KK |
459 | source "drivers/pci/pcie/Kconfig" |
460 | ||
1da177e4 LT |
461 | source "drivers/pci/Kconfig" |
462 | ||
463 | source "drivers/pci/hotplug/Kconfig" | |
464 | ||
465 | source "drivers/pcmcia/Kconfig" | |
466 | ||
467 | endmenu | |
468 | ||
469 | endif | |
470 | ||
d5950b43 SR |
471 | source "net/Kconfig" |
472 | ||
1da177e4 LT |
473 | source "drivers/Kconfig" |
474 | ||
475 | source "fs/Kconfig" | |
476 | ||
477 | source "lib/Kconfig" | |
478 | ||
479 | # | |
480 | # Use the generic interrupt handling code in kernel/irq/: | |
481 | # | |
482 | config GENERIC_HARDIRQS | |
483 | bool | |
484 | default y | |
485 | ||
486 | config GENERIC_IRQ_PROBE | |
487 | bool | |
488 | default y | |
489 | ||
54d5d424 AR |
490 | config GENERIC_PENDING_IRQ |
491 | bool | |
492 | depends on GENERIC_HARDIRQS && SMP | |
493 | default y | |
494 | ||
1da177e4 LT |
495 | source "arch/ia64/hp/sim/Kconfig" |
496 | ||
cd6b0762 PP |
497 | menu "Instrumentation Support" |
498 | depends on EXPERIMENTAL | |
499 | ||
1da177e4 LT |
500 | source "arch/ia64/oprofile/Kconfig" |
501 | ||
cd6b0762 PP |
502 | config KPROBES |
503 | bool "Kprobes (EXPERIMENTAL)" | |
add2b6fd | 504 | depends on EXPERIMENTAL && MODULES |
cd6b0762 PP |
505 | help |
506 | Kprobes allows you to trap at almost any kernel address and | |
507 | execute a callback function. register_kprobe() establishes | |
508 | a probepoint and specifies the callback. Kprobes is useful | |
509 | for kernel debugging, non-intrusive instrumentation and testing. | |
510 | If in doubt, say "N". | |
511 | endmenu | |
512 | ||
1da177e4 LT |
513 | source "arch/ia64/Kconfig.debug" |
514 | ||
515 | source "security/Kconfig" | |
516 | ||
517 | source "crypto/Kconfig" |