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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 | ||
29 | config RWSEM_XCHGADD_ALGORITHM | |
30 | bool | |
31 | default y | |
32 | ||
33 | config GENERIC_CALIBRATE_DELAY | |
34 | bool | |
35 | default y | |
36 | ||
37 | config TIME_INTERPOLATION | |
38 | bool | |
39 | default y | |
40 | ||
41 | config EFI | |
42 | bool | |
43 | default y | |
44 | ||
45 | config GENERIC_IOMAP | |
46 | bool | |
47 | default y | |
48 | ||
7d12e522 AB |
49 | config SCHED_NO_NO_OMIT_FRAME_POINTER |
50 | bool | |
51 | default y | |
52 | ||
f14f75b8 JS |
53 | config IA64_UNCACHED_ALLOCATOR |
54 | bool | |
55 | select GENERIC_ALLOCATOR | |
56 | ||
1da177e4 LT |
57 | choice |
58 | prompt "System type" | |
59 | default IA64_GENERIC | |
60 | ||
61 | config IA64_GENERIC | |
62 | bool "generic" | |
63 | select NUMA | |
64 | select ACPI_NUMA | |
65 | select VIRTUAL_MEM_MAP | |
66 | select DISCONTIGMEM | |
67 | help | |
68 | This selects the system type of your hardware. A "generic" kernel | |
69 | will run on any supported IA-64 system. However, if you configure | |
70 | a kernel for your specific system, it will be faster and smaller. | |
71 | ||
72 | generic For any supported IA-64 system | |
73 | DIG-compliant For DIG ("Developer's Interface Guide") compliant systems | |
74 | HP-zx1/sx1000 For HP systems | |
75 | HP-zx1/sx1000+swiotlb For HP systems with (broken) DMA-constrained devices. | |
76 | SGI-SN2 For SGI Altix systems | |
77 | Ski-simulator For the HP simulator <http://www.hpl.hp.com/research/linux/ski/> | |
78 | ||
79 | If you don't know what to do, choose "generic". | |
80 | ||
81 | config IA64_DIG | |
82 | bool "DIG-compliant" | |
83 | ||
84 | config IA64_HP_ZX1 | |
85 | bool "HP-zx1/sx1000" | |
86 | help | |
87 | Build a kernel that runs on HP zx1 and sx1000 systems. This adds | |
88 | support for the HP I/O MMU. | |
89 | ||
90 | config IA64_HP_ZX1_SWIOTLB | |
91 | bool "HP-zx1/sx1000 with software I/O TLB" | |
92 | help | |
93 | Build a kernel that runs on HP zx1 and sx1000 systems even when they | |
94 | have broken PCI devices which cannot DMA to full 32 bits. Apart | |
95 | from support for the HP I/O MMU, this includes support for the software | |
96 | I/O TLB, which allows supporting the broken devices at the expense of | |
97 | wasting some kernel memory (about 2MB by default). | |
98 | ||
99 | config IA64_SGI_SN2 | |
100 | bool "SGI-SN2" | |
101 | help | |
102 | Selecting this option will optimize the kernel for use on sn2 based | |
103 | systems, but the resulting kernel binary will not run on other | |
104 | types of ia64 systems. If you have an SGI Altix system, it's safe | |
105 | to select this option. If in doubt, select ia64 generic support | |
106 | instead. | |
107 | ||
108 | config IA64_HP_SIM | |
109 | bool "Ski-simulator" | |
110 | ||
111 | endchoice | |
112 | ||
113 | choice | |
114 | prompt "Processor type" | |
115 | default ITANIUM | |
116 | ||
117 | config ITANIUM | |
118 | bool "Itanium" | |
119 | help | |
120 | Select your IA-64 processor type. The default is Itanium. | |
121 | This choice is safe for all IA-64 systems, but may not perform | |
122 | optimally on systems with, say, Itanium 2 or newer processors. | |
123 | ||
124 | config MCKINLEY | |
125 | bool "Itanium 2" | |
126 | help | |
127 | Select this to configure for an Itanium 2 (McKinley) processor. | |
128 | ||
129 | endchoice | |
130 | ||
131 | choice | |
132 | prompt "Kernel page size" | |
133 | default IA64_PAGE_SIZE_16KB | |
134 | ||
135 | config IA64_PAGE_SIZE_4KB | |
136 | bool "4KB" | |
137 | help | |
138 | This lets you select the page size of the kernel. For best IA-64 | |
139 | performance, a page size of 8KB or 16KB is recommended. For best | |
140 | IA-32 compatibility, a page size of 4KB should be selected (the vast | |
141 | majority of IA-32 binaries work perfectly fine with a larger page | |
142 | size). For Itanium 2 or newer systems, a page size of 64KB can also | |
143 | be selected. | |
144 | ||
145 | 4KB For best IA-32 compatibility | |
146 | 8KB For best IA-64 performance | |
147 | 16KB For best IA-64 performance | |
148 | 64KB Requires Itanium 2 or newer processor. | |
149 | ||
150 | If you don't know what to do, choose 16KB. | |
151 | ||
152 | config IA64_PAGE_SIZE_8KB | |
153 | bool "8KB" | |
154 | ||
155 | config IA64_PAGE_SIZE_16KB | |
156 | bool "16KB" | |
157 | ||
158 | config IA64_PAGE_SIZE_64KB | |
159 | depends on !ITANIUM | |
160 | bool "64KB" | |
161 | ||
162 | endchoice | |
163 | ||
b5d23e5b CL |
164 | source kernel/Kconfig.hz |
165 | ||
1da177e4 LT |
166 | config IA64_BRL_EMU |
167 | bool | |
168 | depends on ITANIUM | |
169 | default y | |
170 | ||
171 | # align cache-sensitive data to 128 bytes | |
172 | config IA64_L1_CACHE_SHIFT | |
173 | int | |
174 | default "7" if MCKINLEY | |
175 | default "6" if ITANIUM | |
176 | ||
177 | # align cache-sensitive data to 64 bytes | |
178 | config NUMA | |
179 | bool "NUMA support" | |
180 | depends on !IA64_HP_SIM | |
181 | default y if IA64_SGI_SN2 | |
182 | select ACPI_NUMA | |
183 | help | |
184 | Say Y to compile the kernel to support NUMA (Non-Uniform Memory | |
185 | Access). This option is for configuring high-end multiprocessor | |
186 | server systems. If in doubt, say N. | |
187 | ||
188 | config VIRTUAL_MEM_MAP | |
189 | bool "Virtual mem map" | |
190 | default y if !IA64_HP_SIM | |
191 | help | |
192 | Say Y to compile the kernel with support for a virtual mem map. | |
193 | This code also only takes effect if a memory hole of greater than | |
194 | 1 Gb is found during boot. You must turn this option on if you | |
195 | require the DISCONTIGMEM option for your machine. If you are | |
196 | unsure, say Y. | |
197 | ||
198 | config HOLES_IN_ZONE | |
199 | bool | |
200 | default y if VIRTUAL_MEM_MAP | |
201 | ||
3f22ab27 | 202 | config ARCH_DISCONTIGMEM_ENABLE |
1da177e4 LT |
203 | bool "Discontiguous memory support" |
204 | depends on (IA64_DIG || IA64_SGI_SN2 || IA64_GENERIC || IA64_HP_ZX1 || IA64_HP_ZX1_SWIOTLB) && NUMA && VIRTUAL_MEM_MAP | |
205 | default y if (IA64_SGI_SN2 || IA64_GENERIC) && NUMA | |
206 | help | |
207 | Say Y to support efficient handling of discontiguous physical memory, | |
208 | for architectures which are either NUMA (Non-Uniform Memory Access) | |
209 | or have huge holes in the physical address space for other reasons. | |
210 | See <file:Documentation/vm/numa> for more. | |
211 | ||
212 | config IA64_CYCLONE | |
213 | bool "Cyclone (EXA) Time Source support" | |
214 | help | |
215 | Say Y here to enable support for IBM EXA Cyclone time source. | |
216 | If you're unsure, answer N. | |
217 | ||
218 | config IOSAPIC | |
219 | bool | |
220 | depends on !IA64_HP_SIM | |
221 | default y | |
222 | ||
b0d82bd5 DN |
223 | config IA64_SGI_SN_XP |
224 | tristate "Support communication between SGI SSIs" | |
65ed0b33 | 225 | select IA64_UNCACHED_ALLOCATOR |
b0d82bd5 DN |
226 | help |
227 | An SGI machine can be divided into multiple Single System | |
228 | Images which act independently of each other and have | |
229 | hardware based memory protection from the others. Enabling | |
230 | this feature will allow for direct communication between SSIs | |
231 | based on a network adapter and DMA messaging. | |
232 | ||
1da177e4 LT |
233 | config FORCE_MAX_ZONEORDER |
234 | int | |
235 | default "18" | |
236 | ||
237 | config SMP | |
238 | bool "Symmetric multi-processing support" | |
239 | help | |
240 | This enables support for systems with more than one CPU. If you have | |
241 | a system with only one CPU, say N. If you have a system with more | |
242 | than one CPU, say Y. | |
243 | ||
244 | If you say N here, the kernel will run on single and multiprocessor | |
245 | systems, but will use only one CPU of a multiprocessor system. If | |
246 | you say Y here, the kernel will run on many, but not all, | |
247 | single processor systems. On a single processor system, the kernel | |
248 | will run faster if you say N here. | |
249 | ||
250 | See also the <file:Documentation/smp.txt> and the SMP-HOWTO | |
251 | available at <http://www.tldp.org/docs.html#howto>. | |
252 | ||
253 | If you don't know what to do here, say N. | |
254 | ||
255 | config NR_CPUS | |
256 | int "Maximum number of CPUs (2-512)" | |
257 | range 2 512 | |
258 | depends on SMP | |
259 | default "64" | |
260 | help | |
261 | You should set this to the number of CPUs in your system, but | |
262 | keep in mind that a kernel compiled for, e.g., 2 CPUs will boot but | |
263 | only use 2 CPUs on a >2 CPU system. Setting this to a value larger | |
264 | than 64 will cause the use of a CPU mask array, causing a small | |
265 | performance hit. | |
266 | ||
267 | config HOTPLUG_CPU | |
268 | bool "Support for hot-pluggable CPUs (EXPERIMENTAL)" | |
269 | depends on SMP && EXPERIMENTAL | |
270 | select HOTPLUG | |
271 | default n | |
272 | ---help--- | |
273 | Say Y here to experiment with turning CPUs off and on. CPUs | |
274 | can be controlled through /sys/devices/system/cpu/cpu#. | |
275 | Say N if you want to disable CPU hotplug. | |
276 | ||
7a9bdd88 SS |
277 | config SCHED_SMT |
278 | bool "SMT scheduler support" | |
279 | depends on SMP | |
280 | default off | |
281 | help | |
282 | Improves the CPU scheduler's decision making when dealing with | |
283 | Intel IA64 chips with MultiThreading at a cost of slightly increased | |
284 | overhead in some places. If unsure say N here. | |
285 | ||
1da177e4 LT |
286 | config PREEMPT |
287 | bool "Preemptible Kernel" | |
288 | help | |
289 | This option reduces the latency of the kernel when reacting to | |
290 | real-time or interactive events by allowing a low priority process to | |
291 | be preempted even if it is in kernel mode executing a system call. | |
292 | This allows applications to run more reliably even when the system is | |
293 | under load. | |
294 | ||
295 | Say Y here if you are building a kernel for a desktop, embedded | |
296 | or real-time system. Say N if you are unsure. | |
297 | ||
3f22ab27 DH |
298 | source "mm/Kconfig" |
299 | ||
1da177e4 LT |
300 | config HAVE_DEC_LOCK |
301 | bool | |
302 | depends on (SMP || PREEMPT) | |
303 | default y | |
304 | ||
305 | config IA32_SUPPORT | |
306 | bool "Support for Linux/x86 binaries" | |
307 | help | |
308 | IA-64 processors can execute IA-32 (X86) instructions. By | |
309 | saying Y here, the kernel will include IA-32 system call | |
310 | emulation support which makes it possible to transparently | |
311 | run IA-32 Linux binaries on an IA-64 Linux system. | |
312 | If in doubt, say Y. | |
313 | ||
314 | config COMPAT | |
315 | bool | |
316 | depends on IA32_SUPPORT | |
317 | default y | |
318 | ||
319 | config IA64_MCA_RECOVERY | |
320 | tristate "MCA recovery from errors other than TLB." | |
321 | ||
322 | config PERFMON | |
323 | bool "Performance monitor support" | |
324 | help | |
325 | Selects whether support for the IA-64 performance monitor hardware | |
326 | is included in the kernel. This makes some kernel data-structures a | |
327 | little bigger and slows down execution a bit, but it is generally | |
328 | a good idea to turn this on. If you're unsure, say Y. | |
329 | ||
330 | config IA64_PALINFO | |
331 | tristate "/proc/pal support" | |
332 | help | |
333 | If you say Y here, you are able to get PAL (Processor Abstraction | |
334 | Layer) information in /proc/pal. This contains useful information | |
335 | about the processors in your systems, such as cache and TLB sizes | |
336 | and the PAL firmware version in use. | |
337 | ||
338 | To use this option, you have to ensure that the "/proc file system | |
339 | support" (CONFIG_PROC_FS) is enabled, too. | |
340 | ||
341 | config ACPI_DEALLOCATE_IRQ | |
342 | bool | |
343 | depends on IOSAPIC && EXPERIMENTAL | |
344 | default y | |
345 | ||
346 | source "drivers/firmware/Kconfig" | |
347 | ||
348 | source "fs/Kconfig.binfmt" | |
349 | ||
350 | endmenu | |
351 | ||
352 | menu "Power management and ACPI" | |
353 | ||
354 | config PM | |
355 | bool "Power Management support" | |
605036cf | 356 | depends on !IA64_HP_SIM |
1da177e4 LT |
357 | default y |
358 | help | |
359 | "Power Management" means that parts of your computer are shut | |
360 | off or put into a power conserving "sleep" mode if they are not | |
361 | being used. There are two competing standards for doing this: APM | |
362 | and ACPI. If you want to use either one, say Y here and then also | |
363 | to the requisite support below. | |
364 | ||
365 | Power Management is most important for battery powered laptop | |
366 | computers; if you have a laptop, check out the Linux Laptop home | |
367 | page on the WWW at <http://www.linux-on-laptops.com/> and the | |
368 | Battery Powered Linux mini-HOWTO, available from | |
369 | <http://www.tldp.org/docs.html#howto>. | |
370 | ||
371 | Note that, even if you say N here, Linux on the x86 architecture | |
372 | will issue the hlt instruction if nothing is to be done, thereby | |
373 | sending the processor to sleep and saving power. | |
374 | ||
375 | config ACPI | |
376 | bool | |
377 | depends on !IA64_HP_SIM | |
378 | default y | |
379 | ||
380 | if !IA64_HP_SIM | |
381 | ||
382 | source "drivers/acpi/Kconfig" | |
383 | ||
384 | endif | |
385 | ||
4db8699b VP |
386 | if PM |
387 | ||
388 | source "arch/ia64/kernel/cpufreq/Kconfig" | |
389 | ||
390 | endif | |
391 | ||
1da177e4 LT |
392 | endmenu |
393 | ||
394 | if !IA64_HP_SIM | |
395 | ||
396 | menu "Bus options (PCI, PCMCIA)" | |
397 | ||
398 | config PCI | |
399 | bool "PCI support" | |
400 | help | |
85f265d8 CH |
401 | Real IA-64 machines all have PCI/PCI-X/PCI Express busses. Say Y |
402 | here unless you are using a simulator without PCI support. | |
1da177e4 LT |
403 | |
404 | config PCI_DOMAINS | |
405 | bool | |
406 | default PCI | |
407 | ||
408 | source "drivers/pci/Kconfig" | |
409 | ||
410 | source "drivers/pci/hotplug/Kconfig" | |
411 | ||
412 | source "drivers/pcmcia/Kconfig" | |
413 | ||
414 | endmenu | |
415 | ||
416 | endif | |
417 | ||
d5950b43 SR |
418 | source "net/Kconfig" |
419 | ||
1da177e4 LT |
420 | source "drivers/Kconfig" |
421 | ||
422 | source "fs/Kconfig" | |
423 | ||
424 | source "lib/Kconfig" | |
425 | ||
426 | # | |
427 | # Use the generic interrupt handling code in kernel/irq/: | |
428 | # | |
429 | config GENERIC_HARDIRQS | |
430 | bool | |
431 | default y | |
432 | ||
433 | config GENERIC_IRQ_PROBE | |
434 | bool | |
435 | default y | |
436 | ||
437 | source "arch/ia64/hp/sim/Kconfig" | |
438 | ||
439 | source "arch/ia64/oprofile/Kconfig" | |
440 | ||
441 | source "arch/ia64/Kconfig.debug" | |
442 | ||
443 | source "security/Kconfig" | |
444 | ||
445 | source "crypto/Kconfig" |