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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 |
1da177e4 LT |
80 | select NUMA |
81 | select ACPI_NUMA | |
1da177e4 LT |
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 | ||
96 | config IA64_DIG | |
97 | bool "DIG-compliant" | |
98 | ||
99 | config 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 | ||
105 | config 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 | ||
114 | config 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 | ||
123 | config IA64_HP_SIM | |
124 | bool "Ski-simulator" | |
125 | ||
126 | endchoice | |
127 | ||
128 | choice | |
129 | prompt "Processor type" | |
130 | default ITANIUM | |
131 | ||
132 | config 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 | ||
139 | config MCKINLEY | |
140 | bool "Itanium 2" | |
141 | help | |
142 | Select this to configure for an Itanium 2 (McKinley) processor. | |
143 | ||
144 | endchoice | |
145 | ||
146 | choice | |
147 | prompt "Kernel page size" | |
148 | default IA64_PAGE_SIZE_16KB | |
149 | ||
150 | config 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 | ||
167 | config IA64_PAGE_SIZE_8KB | |
168 | bool "8KB" | |
169 | ||
170 | config IA64_PAGE_SIZE_16KB | |
171 | bool "16KB" | |
172 | ||
173 | config IA64_PAGE_SIZE_64KB | |
174 | depends on !ITANIUM | |
175 | bool "64KB" | |
176 | ||
177 | endchoice | |
178 | ||
837cd0bd RH |
179 | choice |
180 | prompt "Page Table Levels" | |
181 | default PGTABLE_3 | |
182 | ||
183 | config PGTABLE_3 | |
184 | bool "3 Levels" | |
185 | ||
186 | config PGTABLE_4 | |
187 | depends on !IA64_PAGE_SIZE_64KB | |
188 | bool "4 Levels" | |
189 | ||
190 | endchoice | |
191 | ||
b5d23e5b CL |
192 | source kernel/Kconfig.hz |
193 | ||
1da177e4 LT |
194 | config IA64_BRL_EMU |
195 | bool | |
196 | depends on ITANIUM | |
197 | default y | |
198 | ||
199 | # align cache-sensitive data to 128 bytes | |
200 | config IA64_L1_CACHE_SHIFT | |
201 | int | |
202 | default "7" if MCKINLEY | |
203 | default "6" if ITANIUM | |
204 | ||
1da177e4 LT |
205 | config 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 | ||
211 | config IOSAPIC | |
212 | bool | |
213 | depends on !IA64_HP_SIM | |
214 | default y | |
215 | ||
b0d82bd5 DN |
216 | config 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 |
b0d82bd5 DN |
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 | 227 | config FORCE_MAX_ZONEORDER |
da9577c5 BP |
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" | |
1da177e4 LT |
232 | |
233 | config 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 | ||
251 | config NR_CPUS | |
54703d36 JS |
252 | int "Maximum number of CPUs (2-1024)" |
253 | range 2 1024 | |
1da177e4 LT |
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 | ||
263 | config HOTPLUG_CPU | |
264 | bool "Support for hot-pluggable CPUs (EXPERIMENTAL)" | |
265 | depends on SMP && EXPERIMENTAL | |
266 | select HOTPLUG | |
267 | default n | |
268 | ---help--- | |
269 | Say Y here to experiment with turning CPUs off and on. CPUs | |
270 | can be controlled through /sys/devices/system/cpu/cpu#. | |
271 | Say N if you want to disable CPU hotplug. | |
272 | ||
7a9bdd88 SS |
273 | config SCHED_SMT |
274 | bool "SMT scheduler support" | |
275 | depends on SMP | |
276 | default off | |
277 | help | |
278 | Improves the CPU scheduler's decision making when dealing with | |
279 | Intel IA64 chips with MultiThreading at a cost of slightly increased | |
280 | overhead in some places. If unsure say N here. | |
281 | ||
ff741906 AR |
282 | config PERMIT_BSP_REMOVE |
283 | bool "Support removal of Bootstrap Processor" | |
284 | depends on HOTPLUG_CPU | |
285 | default n | |
286 | ---help--- | |
287 | Say Y here if your platform SAL will support removal of BSP with HOTPLUG_CPU | |
288 | support. | |
289 | ||
290 | config FORCE_CPEI_RETARGET | |
291 | bool "Force assumption that CPEI can be re-targetted" | |
292 | depends on PERMIT_BSP_REMOVE | |
293 | default n | |
294 | ---help--- | |
295 | Say Y if you need to force the assumption that CPEI can be re-targetted to | |
296 | any cpu in the system. This hint is available via ACPI 3.0 specifications. | |
297 | Tiger4 systems are capable of re-directing CPEI to any CPU other than BSP. | |
298 | This option it useful to enable this feature on older BIOS's as well. | |
299 | You can also enable this by using boot command line option force_cpei=1. | |
300 | ||
1da177e4 LT |
301 | config PREEMPT |
302 | bool "Preemptible Kernel" | |
303 | help | |
304 | This option reduces the latency of the kernel when reacting to | |
305 | real-time or interactive events by allowing a low priority process to | |
306 | be preempted even if it is in kernel mode executing a system call. | |
307 | This allows applications to run more reliably even when the system is | |
308 | under load. | |
309 | ||
310 | Say Y here if you are building a kernel for a desktop, embedded | |
311 | or real-time system. Say N if you are unsure. | |
312 | ||
3f22ab27 DH |
313 | source "mm/Kconfig" |
314 | ||
da9577c5 BP |
315 | config ARCH_SELECT_MEMORY_MODEL |
316 | def_bool y | |
317 | ||
318 | config ARCH_DISCONTIGMEM_ENABLE | |
319 | def_bool y | |
320 | help | |
321 | Say Y to support efficient handling of discontiguous physical memory, | |
322 | for architectures which are either NUMA (Non-Uniform Memory Access) | |
323 | or have huge holes in the physical address space for other reasons. | |
324 | See <file:Documentation/vm/numa> for more. | |
325 | ||
326 | config ARCH_FLATMEM_ENABLE | |
327 | def_bool y | |
328 | ||
329 | config ARCH_SPARSEMEM_ENABLE | |
330 | def_bool y | |
331 | depends on ARCH_DISCONTIGMEM_ENABLE | |
332 | ||
333 | config ARCH_DISCONTIGMEM_DEFAULT | |
334 | def_bool y if (IA64_SGI_SN2 || IA64_GENERIC || IA64_HP_ZX1 || IA64_HP_ZX1_SWIOTLB) | |
335 | depends on ARCH_DISCONTIGMEM_ENABLE | |
336 | ||
337 | config NUMA | |
338 | bool "NUMA support" | |
339 | depends on !IA64_HP_SIM && !FLATMEM | |
340 | default y if IA64_SGI_SN2 | |
341 | help | |
342 | Say Y to compile the kernel to support NUMA (Non-Uniform Memory | |
343 | Access). This option is for configuring high-end multiprocessor | |
344 | server systems. If in doubt, say N. | |
345 | ||
c80d79d7 YG |
346 | config NODES_SHIFT |
347 | int "Max num nodes shift(3-10)" | |
348 | range 3 10 | |
349 | default "8" | |
350 | depends on NEED_MULTIPLE_NODES | |
351 | help | |
352 | This option specifies the maximum number of nodes in your SSI system. | |
353 | MAX_NUMNODES will be 2^(This value). | |
354 | If in doubt, use the default. | |
355 | ||
da9577c5 BP |
356 | # VIRTUAL_MEM_MAP and FLAT_NODE_MEM_MAP are functionally equivalent. |
357 | # VIRTUAL_MEM_MAP has been retained for historical reasons. | |
358 | config VIRTUAL_MEM_MAP | |
359 | bool "Virtual mem map" | |
360 | depends on !SPARSEMEM | |
361 | default y if !IA64_HP_SIM | |
362 | help | |
363 | Say Y to compile the kernel with support for a virtual mem map. | |
364 | This code also only takes effect if a memory hole of greater than | |
365 | 1 Gb is found during boot. You must turn this option on if you | |
366 | require the DISCONTIGMEM option for your machine. If you are | |
367 | unsure, say Y. | |
368 | ||
369 | config HOLES_IN_ZONE | |
370 | bool | |
371 | default y if VIRTUAL_MEM_MAP | |
372 | ||
373 | config HAVE_ARCH_EARLY_PFN_TO_NID | |
374 | def_bool y | |
375 | depends on NEED_MULTIPLE_NODES | |
376 | ||
1da177e4 LT |
377 | config IA32_SUPPORT |
378 | bool "Support for Linux/x86 binaries" | |
379 | help | |
380 | IA-64 processors can execute IA-32 (X86) instructions. By | |
381 | saying Y here, the kernel will include IA-32 system call | |
382 | emulation support which makes it possible to transparently | |
383 | run IA-32 Linux binaries on an IA-64 Linux system. | |
384 | If in doubt, say Y. | |
385 | ||
386 | config COMPAT | |
387 | bool | |
388 | depends on IA32_SUPPORT | |
389 | default y | |
390 | ||
391 | config IA64_MCA_RECOVERY | |
392 | tristate "MCA recovery from errors other than TLB." | |
393 | ||
394 | config PERFMON | |
395 | bool "Performance monitor support" | |
396 | help | |
397 | Selects whether support for the IA-64 performance monitor hardware | |
398 | is included in the kernel. This makes some kernel data-structures a | |
399 | little bigger and slows down execution a bit, but it is generally | |
400 | a good idea to turn this on. If you're unsure, say Y. | |
401 | ||
402 | config IA64_PALINFO | |
403 | tristate "/proc/pal support" | |
404 | help | |
405 | If you say Y here, you are able to get PAL (Processor Abstraction | |
406 | Layer) information in /proc/pal. This contains useful information | |
407 | about the processors in your systems, such as cache and TLB sizes | |
408 | and the PAL firmware version in use. | |
409 | ||
410 | To use this option, you have to ensure that the "/proc file system | |
411 | support" (CONFIG_PROC_FS) is enabled, too. | |
412 | ||
466575f4 JS |
413 | config SGI_SN |
414 | def_bool y if (IA64_SGI_SN2 || IA64_GENERIC) | |
415 | ||
c1311af1 BC |
416 | source "drivers/sn/Kconfig" |
417 | ||
1da177e4 LT |
418 | source "drivers/firmware/Kconfig" |
419 | ||
420 | source "fs/Kconfig.binfmt" | |
421 | ||
422 | endmenu | |
423 | ||
424 | menu "Power management and ACPI" | |
425 | ||
eb7b6b32 | 426 | source "kernel/power/Kconfig" |
1da177e4 LT |
427 | |
428 | source "drivers/acpi/Kconfig" | |
429 | ||
4db8699b VP |
430 | if PM |
431 | ||
432 | source "arch/ia64/kernel/cpufreq/Kconfig" | |
433 | ||
434 | endif | |
435 | ||
1da177e4 LT |
436 | endmenu |
437 | ||
438 | if !IA64_HP_SIM | |
439 | ||
440 | menu "Bus options (PCI, PCMCIA)" | |
441 | ||
442 | config PCI | |
443 | bool "PCI support" | |
444 | help | |
85f265d8 CH |
445 | Real IA-64 machines all have PCI/PCI-X/PCI Express busses. Say Y |
446 | here unless you are using a simulator without PCI support. | |
1da177e4 LT |
447 | |
448 | config PCI_DOMAINS | |
449 | bool | |
450 | default PCI | |
451 | ||
452 | source "drivers/pci/Kconfig" | |
453 | ||
454 | source "drivers/pci/hotplug/Kconfig" | |
455 | ||
456 | source "drivers/pcmcia/Kconfig" | |
457 | ||
458 | endmenu | |
459 | ||
460 | endif | |
461 | ||
d5950b43 SR |
462 | source "net/Kconfig" |
463 | ||
1da177e4 LT |
464 | source "drivers/Kconfig" |
465 | ||
466 | source "fs/Kconfig" | |
467 | ||
468 | source "lib/Kconfig" | |
469 | ||
470 | # | |
471 | # Use the generic interrupt handling code in kernel/irq/: | |
472 | # | |
473 | config GENERIC_HARDIRQS | |
474 | bool | |
475 | default y | |
476 | ||
477 | config GENERIC_IRQ_PROBE | |
478 | bool | |
479 | default y | |
480 | ||
54d5d424 AR |
481 | config GENERIC_PENDING_IRQ |
482 | bool | |
483 | depends on GENERIC_HARDIRQS && SMP | |
484 | default y | |
485 | ||
1da177e4 LT |
486 | source "arch/ia64/hp/sim/Kconfig" |
487 | ||
cd6b0762 PP |
488 | menu "Instrumentation Support" |
489 | depends on EXPERIMENTAL | |
490 | ||
1da177e4 LT |
491 | source "arch/ia64/oprofile/Kconfig" |
492 | ||
cd6b0762 PP |
493 | config KPROBES |
494 | bool "Kprobes (EXPERIMENTAL)" | |
add2b6fd | 495 | depends on EXPERIMENTAL && MODULES |
cd6b0762 PP |
496 | help |
497 | Kprobes allows you to trap at almost any kernel address and | |
498 | execute a callback function. register_kprobe() establishes | |
499 | a probepoint and specifies the callback. Kprobes is useful | |
500 | for kernel debugging, non-intrusive instrumentation and testing. | |
501 | If in doubt, say "N". | |
502 | endmenu | |
503 | ||
1da177e4 LT |
504 | source "arch/ia64/Kconfig.debug" |
505 | ||
506 | source "security/Kconfig" | |
507 | ||
508 | source "crypto/Kconfig" |