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linux
1#
2# For a description of the syntax of this configuration file,
3# see Documentation/kbuild/kconfig-language.txt.
4#
5
6mainmenu "IA-64 Linux Kernel Configuration"
7
8source "init/Kconfig"
9
10source "kernel/Kconfig.freezer"
11
12menu "Processor type and features"
13
14config IA64
15 bool
16 select PCI if (!IA64_HP_SIM)
17 select ACPI if (!IA64_HP_SIM)
18 select PM if (!IA64_HP_SIM)
19 select ARCH_SUPPORTS_MSI
20 select HAVE_UNSTABLE_SCHED_CLOCK
21 select HAVE_IDE
22 select HAVE_OPROFILE
23 select HAVE_KPROBES
24 select HAVE_KRETPROBES
25 select HAVE_FTRACE_MCOUNT_RECORD
26 select HAVE_DYNAMIC_FTRACE if (!ITANIUM)
27 select HAVE_FUNCTION_TRACER
28 select HAVE_DMA_ATTRS
29 select HAVE_KVM
30 select HAVE_ARCH_TRACEHOOK
31 select HAVE_DMA_API_DEBUG
32 default y
33 help
34 The Itanium Processor Family is Intel's 64-bit successor to
35 the 32-bit X86 line. The IA-64 Linux project has a home
36 page at <http://www.linuxia64.org/> and a mailing list at
37 <linux-ia64@vger.kernel.org>.
38
39config 64BIT
40 bool
41 select ATA_NONSTANDARD if ATA
42 default y
43
44config ZONE_DMA
45 def_bool y
46 depends on !IA64_SGI_SN2
47
48config QUICKLIST
49 bool
50 default y
51
52config MMU
53 bool
54 default y
55
56config SWIOTLB
57 bool
58
59config IOMMU_HELPER
60 bool
61
62config GENERIC_LOCKBREAK
63 bool
64 default y
65 depends on SMP && PREEMPT
66
67config RWSEM_XCHGADD_ALGORITHM
68 bool
69 default y
70
71config HUGETLB_PAGE_SIZE_VARIABLE
72 bool
73 depends on HUGETLB_PAGE
74 default y
75
76config GENERIC_FIND_NEXT_BIT
77 bool
78 default y
79
80config GENERIC_CALIBRATE_DELAY
81 bool
82 default y
83
84config GENERIC_TIME
85 bool
86 default y
87
88config GENERIC_TIME_VSYSCALL
89 bool
90 default y
91
92config HAVE_SETUP_PER_CPU_AREA
93 def_bool y
94
95config DMI
96 bool
97 default y
98
99config EFI
100 bool
101 default y
102
103config GENERIC_IOMAP
104 bool
105 default y
106
107config SCHED_OMIT_FRAME_POINTER
108 bool
109 default y
110
111config IA64_UNCACHED_ALLOCATOR
112 bool
113 select GENERIC_ALLOCATOR
114
115config AUDIT_ARCH
116 bool
117 default y
118
119menuconfig PARAVIRT_GUEST
120 bool "Paravirtualized guest support"
121 help
122 Say Y here to get to see options related to running Linux under
123 various hypervisors. This option alone does not add any kernel code.
124
125 If you say N, all options in this submenu will be skipped and disabled.
126
127if PARAVIRT_GUEST
128
129config PARAVIRT
130 bool "Enable paravirtualization code"
131 depends on PARAVIRT_GUEST
132 default y
133 bool
134 default y
135 help
136 This changes the kernel so it can modify itself when it is run
137 under a hypervisor, potentially improving performance significantly
138 over full virtualization. However, when run without a hypervisor
139 the kernel is theoretically slower and slightly larger.
140
141
142source "arch/ia64/xen/Kconfig"
143
144endif
145
146choice
147 prompt "System type"
148 default IA64_GENERIC
149
150config IA64_GENERIC
151 bool "generic"
152 select NUMA
153 select ACPI_NUMA
154 select SWIOTLB
155 select PCI_MSI
156 select DMAR
157 help
158 This selects the system type of your hardware. A "generic" kernel
159 will run on any supported IA-64 system. However, if you configure
160 a kernel for your specific system, it will be faster and smaller.
161
162 generic For any supported IA-64 system
163 DIG-compliant For DIG ("Developer's Interface Guide") compliant systems
164 DIG+Intel+IOMMU For DIG systems with Intel IOMMU
165 HP-zx1/sx1000 For HP systems
166 HP-zx1/sx1000+swiotlb For HP systems with (broken) DMA-constrained devices.
167 SGI-SN2 For SGI Altix systems
168 SGI-UV For SGI UV systems
169 Ski-simulator For the HP simulator <http://www.hpl.hp.com/research/linux/ski/>
170 Xen-domU For xen domU system
171
172 If you don't know what to do, choose "generic".
173
174config IA64_DIG
175 bool "DIG-compliant"
176 select SWIOTLB
177
178config IA64_DIG_VTD
179 bool "DIG+Intel+IOMMU"
180 select DMAR
181 select PCI_MSI
182
183config IA64_HP_ZX1
184 bool "HP-zx1/sx1000"
185 help
186 Build a kernel that runs on HP zx1 and sx1000 systems. This adds
187 support for the HP I/O MMU.
188
189config IA64_HP_ZX1_SWIOTLB
190 bool "HP-zx1/sx1000 with software I/O TLB"
191 select SWIOTLB
192 help
193 Build a kernel that runs on HP zx1 and sx1000 systems even when they
194 have broken PCI devices which cannot DMA to full 32 bits. Apart
195 from support for the HP I/O MMU, this includes support for the software
196 I/O TLB, which allows supporting the broken devices at the expense of
197 wasting some kernel memory (about 2MB by default).
198
199config IA64_SGI_SN2
200 bool "SGI-SN2"
201 select NUMA
202 select ACPI_NUMA
203 help
204 Selecting this option will optimize the kernel for use on sn2 based
205 systems, but the resulting kernel binary will not run on other
206 types of ia64 systems. If you have an SGI Altix system, it's safe
207 to select this option. If in doubt, select ia64 generic support
208 instead.
209
210config IA64_SGI_UV
211 bool "SGI-UV"
212 select NUMA
213 select ACPI_NUMA
214 select SWIOTLB
215 help
216 Selecting this option will optimize the kernel for use on UV based
217 systems, but the resulting kernel binary will not run on other
218 types of ia64 systems. If you have an SGI UV system, it's safe
219 to select this option. If in doubt, select ia64 generic support
220 instead.
221
222config IA64_HP_SIM
223 bool "Ski-simulator"
224 select SWIOTLB
225
226config IA64_XEN_GUEST
227 bool "Xen guest"
228 select SWIOTLB
229 depends on XEN
230 help
231 Build a kernel that runs on Xen guest domain. At this moment only
232 16KB page size in supported.
233
234endchoice
235
236choice
237 prompt "Processor type"
238 default ITANIUM
239
240config ITANIUM
241 bool "Itanium"
242 help
243 Select your IA-64 processor type. The default is Itanium.
244 This choice is safe for all IA-64 systems, but may not perform
245 optimally on systems with, say, Itanium 2 or newer processors.
246
247config MCKINLEY
248 bool "Itanium 2"
249 help
250 Select this to configure for an Itanium 2 (McKinley) processor.
251
252endchoice
253
254choice
255 prompt "Kernel page size"
256 default IA64_PAGE_SIZE_16KB
257
258config IA64_PAGE_SIZE_4KB
259 bool "4KB"
260 help
261 This lets you select the page size of the kernel. For best IA-64
262 performance, a page size of 8KB or 16KB is recommended. For best
263 IA-32 compatibility, a page size of 4KB should be selected (the vast
264 majority of IA-32 binaries work perfectly fine with a larger page
265 size). For Itanium 2 or newer systems, a page size of 64KB can also
266 be selected.
267
268 4KB For best IA-32 compatibility
269 8KB For best IA-64 performance
270 16KB For best IA-64 performance
271 64KB Requires Itanium 2 or newer processor.
272
273 If you don't know what to do, choose 16KB.
274
275config IA64_PAGE_SIZE_8KB
276 bool "8KB"
277
278config IA64_PAGE_SIZE_16KB
279 bool "16KB"
280
281config IA64_PAGE_SIZE_64KB
282 depends on !ITANIUM
283 bool "64KB"
284
285endchoice
286
287choice
288 prompt "Page Table Levels"
289 default PGTABLE_3
290
291config PGTABLE_3
292 bool "3 Levels"
293
294config PGTABLE_4
295 depends on !IA64_PAGE_SIZE_64KB
296 bool "4 Levels"
297
298endchoice
299
300if IA64_HP_SIM
301config HZ
302 default 32
303endif
304
305if !IA64_HP_SIM
306source kernel/Kconfig.hz
307endif
308
309config IA64_BRL_EMU
310 bool
311 depends on ITANIUM
312 default y
313
314# align cache-sensitive data to 128 bytes
315config IA64_L1_CACHE_SHIFT
316 int
317 default "7" if MCKINLEY
318 default "6" if ITANIUM
319
320config IA64_CYCLONE
321 bool "Cyclone (EXA) Time Source support"
322 help
323 Say Y here to enable support for IBM EXA Cyclone time source.
324 If you're unsure, answer N.
325
326config IOSAPIC
327 bool
328 depends on !IA64_HP_SIM
329 default y
330
331config FORCE_MAX_ZONEORDER
332 int "MAX_ORDER (11 - 17)" if !HUGETLB_PAGE
333 range 11 17 if !HUGETLB_PAGE
334 default "17" if HUGETLB_PAGE
335 default "11"
336
337config VIRT_CPU_ACCOUNTING
338 bool "Deterministic task and CPU time accounting"
339 default n
340 help
341 Select this option to enable more accurate task and CPU time
342 accounting. This is done by reading a CPU counter on each
343 kernel entry and exit and on transitions within the kernel
344 between system, softirq and hardirq state, so there is a
345 small performance impact.
346 If in doubt, say N here.
347
348config SMP
349 bool "Symmetric multi-processing support"
350 select USE_GENERIC_SMP_HELPERS
351 help
352 This enables support for systems with more than one CPU. If you have
353 a system with only one CPU, say N. If you have a system with more
354 than one CPU, say Y.
355
356 If you say N here, the kernel will run on single and multiprocessor
357 systems, but will use only one CPU of a multiprocessor system. If
358 you say Y here, the kernel will run on many, but not all,
359 single processor systems. On a single processor system, the kernel
360 will run faster if you say N here.
361
362 See also the SMP-HOWTO available at
363 <http://www.tldp.org/docs.html#howto>.
364
365 If you don't know what to do here, say N.
366
367config NR_CPUS
368 int "Maximum number of CPUs (2-4096)"
369 range 2 4096
370 depends on SMP
371 default "4096"
372 help
373 You should set this to the number of CPUs in your system, but
374 keep in mind that a kernel compiled for, e.g., 2 CPUs will boot but
375 only use 2 CPUs on a >2 CPU system. Setting this to a value larger
376 than 64 will cause the use of a CPU mask array, causing a small
377 performance hit.
378
379config HOTPLUG_CPU
380 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
381 depends on SMP && EXPERIMENTAL
382 select HOTPLUG
383 default n
384 ---help---
385 Say Y here to experiment with turning CPUs off and on. CPUs
386 can be controlled through /sys/devices/system/cpu/cpu#.
387 Say N if you want to disable CPU hotplug.
388
389config ARCH_ENABLE_MEMORY_HOTPLUG
390 def_bool y
391
392config ARCH_ENABLE_MEMORY_HOTREMOVE
393 def_bool y
394
395config SCHED_SMT
396 bool "SMT scheduler support"
397 depends on SMP
398 help
399 Improves the CPU scheduler's decision making when dealing with
400 Intel IA64 chips with MultiThreading at a cost of slightly increased
401 overhead in some places. If unsure say N here.
402
403config PERMIT_BSP_REMOVE
404 bool "Support removal of Bootstrap Processor"
405 depends on HOTPLUG_CPU
406 default n
407 ---help---
408 Say Y here if your platform SAL will support removal of BSP with HOTPLUG_CPU
409 support.
410
411config FORCE_CPEI_RETARGET
412 bool "Force assumption that CPEI can be re-targetted"
413 depends on PERMIT_BSP_REMOVE
414 default n
415 ---help---
416 Say Y if you need to force the assumption that CPEI can be re-targetted to
417 any cpu in the system. This hint is available via ACPI 3.0 specifications.
418 Tiger4 systems are capable of re-directing CPEI to any CPU other than BSP.
419 This option it useful to enable this feature on older BIOS's as well.
420 You can also enable this by using boot command line option force_cpei=1.
421
422source "kernel/Kconfig.preempt"
423
424source "mm/Kconfig"
425
426config ARCH_SELECT_MEMORY_MODEL
427 def_bool y
428
429config ARCH_DISCONTIGMEM_ENABLE
430 def_bool y
431 help
432 Say Y to support efficient handling of discontiguous physical memory,
433 for architectures which are either NUMA (Non-Uniform Memory Access)
434 or have huge holes in the physical address space for other reasons.
435 See <file:Documentation/vm/numa> for more.
436
437config ARCH_FLATMEM_ENABLE
438 def_bool y
439
440config ARCH_SPARSEMEM_ENABLE
441 def_bool y
442 depends on ARCH_DISCONTIGMEM_ENABLE
443 select SPARSEMEM_VMEMMAP_ENABLE
444
445config ARCH_DISCONTIGMEM_DEFAULT
446 def_bool y if (IA64_SGI_SN2 || IA64_GENERIC || IA64_HP_ZX1 || IA64_HP_ZX1_SWIOTLB)
447 depends on ARCH_DISCONTIGMEM_ENABLE
448
449config NUMA
450 bool "NUMA support"
451 depends on !IA64_HP_SIM && !FLATMEM
452 default y if IA64_SGI_SN2
453 select ACPI_NUMA if ACPI
454 help
455 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
456 Access). This option is for configuring high-end multiprocessor
457 server systems. If in doubt, say N.
458
459config NODES_SHIFT
460 int "Max num nodes shift(3-10)"
461 range 3 10
462 default "10"
463 depends on NEED_MULTIPLE_NODES
464 help
465 This option specifies the maximum number of nodes in your SSI system.
466 MAX_NUMNODES will be 2^(This value).
467 If in doubt, use the default.
468
469config ARCH_POPULATES_NODE_MAP
470 def_bool y
471
472# VIRTUAL_MEM_MAP and FLAT_NODE_MEM_MAP are functionally equivalent.
473# VIRTUAL_MEM_MAP has been retained for historical reasons.
474config VIRTUAL_MEM_MAP
475 bool "Virtual mem map"
476 depends on !SPARSEMEM
477 default y if !IA64_HP_SIM
478 help
479 Say Y to compile the kernel with support for a virtual mem map.
480 This code also only takes effect if a memory hole of greater than
481 1 Gb is found during boot. You must turn this option on if you
482 require the DISCONTIGMEM option for your machine. If you are
483 unsure, say Y.
484
485config HOLES_IN_ZONE
486 bool
487 default y if VIRTUAL_MEM_MAP
488
489config HAVE_ARCH_EARLY_PFN_TO_NID
490 def_bool NUMA && SPARSEMEM
491
492config HAVE_ARCH_NODEDATA_EXTENSION
493 def_bool y
494 depends on NUMA
495
496config IA32_SUPPORT
497 bool "Support for Linux/x86 binaries"
498 help
499 IA-64 processors can execute IA-32 (X86) instructions. By
500 saying Y here, the kernel will include IA-32 system call
501 emulation support which makes it possible to transparently
502 run IA-32 Linux binaries on an IA-64 Linux system.
503 If in doubt, say Y.
504
505config COMPAT
506 bool
507 depends on IA32_SUPPORT
508 default y
509
510config COMPAT_FOR_U64_ALIGNMENT
511 def_bool COMPAT
512
513config IA64_MCA_RECOVERY
514 tristate "MCA recovery from errors other than TLB."
515
516config PERFMON
517 bool "Performance monitor support"
518 help
519 Selects whether support for the IA-64 performance monitor hardware
520 is included in the kernel. This makes some kernel data-structures a
521 little bigger and slows down execution a bit, but it is generally
522 a good idea to turn this on. If you're unsure, say Y.
523
524config IA64_PALINFO
525 tristate "/proc/pal support"
526 help
527 If you say Y here, you are able to get PAL (Processor Abstraction
528 Layer) information in /proc/pal. This contains useful information
529 about the processors in your systems, such as cache and TLB sizes
530 and the PAL firmware version in use.
531
532 To use this option, you have to ensure that the "/proc file system
533 support" (CONFIG_PROC_FS) is enabled, too.
534
535config IA64_MC_ERR_INJECT
536 tristate "MC error injection support"
537 help
538 Adds support for MC error injection. If enabled, the kernel
539 will provide a sysfs interface for user applications to
540 call MC error injection PAL procedures to inject various errors.
541 This is a useful tool for MCA testing.
542
543 If you're unsure, do not select this option.
544
545config SGI_SN
546 def_bool y if (IA64_SGI_SN2 || IA64_GENERIC)
547
548config IA64_ESI
549 bool "ESI (Extensible SAL Interface) support"
550 help
551 If you say Y here, support is built into the kernel to
552 make ESI calls. ESI calls are used to support vendor-specific
553 firmware extensions, such as the ability to inject memory-errors
554 for test-purposes. If you're unsure, say N.
555
556config IA64_HP_AML_NFW
557 bool "Support ACPI AML calls to native firmware"
558 help
559 This driver installs a global ACPI Operation Region handler for
560 region 0xA1. AML methods can use this OpRegion to call arbitrary
561 native firmware functions. The driver installs the OpRegion
562 handler if there is an HPQ5001 device or if the user supplies
563 the "force" module parameter, e.g., with the "aml_nfw.force"
564 kernel command line option.
565
566source "drivers/sn/Kconfig"
567
568config KEXEC
569 bool "kexec system call (EXPERIMENTAL)"
570 depends on EXPERIMENTAL && !IA64_HP_SIM && (!SMP || HOTPLUG_CPU)
571 help
572 kexec is a system call that implements the ability to shutdown your
573 current kernel, and to start another kernel. It is like a reboot
574 but it is independent of the system firmware. And like a reboot
575 you can start any kernel with it, not just Linux.
576
577 The name comes from the similarity to the exec system call.
578
579 It is an ongoing process to be certain the hardware in a machine
580 is properly shutdown, so do not be surprised if this code does not
581 initially work for you. It may help to enable device hotplugging
582 support. As of this writing the exact hardware interface is
583 strongly in flux, so no good recommendation can be made.
584
585config CRASH_DUMP
586 bool "kernel crash dumps"
587 depends on IA64_MCA_RECOVERY && !IA64_HP_SIM && (!SMP || HOTPLUG_CPU)
588 help
589 Generate crash dump after being started by kexec.
590
591source "drivers/firmware/Kconfig"
592
593source "fs/Kconfig.binfmt"
594
595endmenu
596
597menu "Power management and ACPI options"
598
599source "kernel/power/Kconfig"
600
601source "drivers/acpi/Kconfig"
602
603if PM
604
605source "arch/ia64/kernel/cpufreq/Kconfig"
606
607endif
608
609endmenu
610
611if !IA64_HP_SIM
612
613menu "Bus options (PCI, PCMCIA)"
614
615config PCI
616 bool "PCI support"
617 help
618 Real IA-64 machines all have PCI/PCI-X/PCI Express busses. Say Y
619 here unless you are using a simulator without PCI support.
620
621config PCI_DOMAINS
622 def_bool PCI
623
624config PCI_SYSCALL
625 def_bool PCI
626
627source "drivers/pci/pcie/Kconfig"
628
629source "drivers/pci/Kconfig"
630
631source "drivers/pci/hotplug/Kconfig"
632
633source "drivers/pcmcia/Kconfig"
634
635config DMAR
636 bool "Support for DMA Remapping Devices (EXPERIMENTAL)"
637 depends on IA64_GENERIC && ACPI && EXPERIMENTAL
638 help
639 DMA remapping (DMAR) devices support enables independent address
640 translations for Direct Memory Access (DMA) from devices.
641 These DMA remapping devices are reported via ACPI tables
642 and include PCI device scope covered by these DMA
643 remapping devices.
644
645config DMAR_DEFAULT_ON
646 def_bool y
647 prompt "Enable DMA Remapping Devices by default"
648 depends on DMAR
649 help
650 Selecting this option will enable a DMAR device at boot time if
651 one is found. If this option is not selected, DMAR support can
652 be enabled by passing intel_iommu=on to the kernel. It is
653 recommended you say N here while the DMAR code remains
654 experimental.
655
656endmenu
657
658endif
659
660source "net/Kconfig"
661
662source "drivers/Kconfig"
663
664source "arch/ia64/hp/sim/Kconfig"
665
666config MSPEC
667 tristate "Memory special operations driver"
668 depends on IA64
669 select IA64_UNCACHED_ALLOCATOR
670 help
671 If you have an ia64 and you want to enable memory special
672 operations support (formerly known as fetchop), say Y here,
673 otherwise say N.
674
675source "fs/Kconfig"
676
677source "arch/ia64/Kconfig.debug"
678
679source "security/Kconfig"
680
681source "crypto/Kconfig"
682
683source "arch/ia64/kvm/Kconfig"
684
685source "lib/Kconfig"
686
687#
688# Use the generic interrupt handling code in kernel/irq/:
689#
690config GENERIC_HARDIRQS
691 bool
692 default y
693
694config GENERIC_IRQ_PROBE
695 bool
696 default y
697
698config GENERIC_PENDING_IRQ
699 bool
700 depends on GENERIC_HARDIRQS && SMP
701 default y
702
703config IRQ_PER_CPU
704 bool
705 default y
706
707config IOMMU_HELPER
708 def_bool (IA64_HP_ZX1 || IA64_HP_ZX1_SWIOTLB || IA64_GENERIC || SWIOTLB)
709
710config IOMMU_API
711 def_bool (DMAR)