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1# SPDX-License-Identifier: GPL-2.0
2config PGTABLE_LEVELS
3 int "Page Table Levels" if !IA64_PAGE_SIZE_64KB
4 range 3 4 if !IA64_PAGE_SIZE_64KB
5 default 3
6
7source "init/Kconfig"
8
9source "kernel/Kconfig.freezer"
10
11menu "Processor type and features"
12
13config IA64
14 bool
15 select ARCH_MIGHT_HAVE_PC_PARPORT
16 select ARCH_MIGHT_HAVE_PC_SERIO
17 select PCI if (!IA64_HP_SIM)
18 select ACPI if (!IA64_HP_SIM)
19 select ACPI_SYSTEM_POWER_STATES_SUPPORT if ACPI
20 select ARCH_MIGHT_HAVE_ACPI_PDC if ACPI
21 select HAVE_UNSTABLE_SCHED_CLOCK
22 select HAVE_EXIT_THREAD
23 select HAVE_IDE
24 select HAVE_OPROFILE
25 select HAVE_KPROBES
26 select HAVE_KRETPROBES
27 select HAVE_FTRACE_MCOUNT_RECORD
28 select HAVE_DYNAMIC_FTRACE if (!ITANIUM)
29 select HAVE_FUNCTION_TRACER
30 select TTY
31 select HAVE_ARCH_TRACEHOOK
32 select HAVE_DMA_API_DEBUG
33 select HAVE_MEMBLOCK
34 select HAVE_MEMBLOCK_NODE_MAP
35 select HAVE_VIRT_CPU_ACCOUNTING
36 select ARCH_HAS_DMA_MARK_CLEAN
37 select ARCH_HAS_SG_CHAIN
38 select VIRT_TO_BUS
39 select ARCH_DISCARD_MEMBLOCK
40 select GENERIC_IRQ_PROBE
41 select GENERIC_PENDING_IRQ if SMP
42 select GENERIC_IRQ_SHOW
43 select GENERIC_IRQ_LEGACY
44 select ARCH_HAVE_NMI_SAFE_CMPXCHG
45 select GENERIC_IOMAP
46 select GENERIC_SMP_IDLE_THREAD
47 select ARCH_TASK_STRUCT_ON_STACK
48 select ARCH_TASK_STRUCT_ALLOCATOR
49 select ARCH_THREAD_STACK_ALLOCATOR
50 select ARCH_CLOCKSOURCE_DATA
51 select GENERIC_TIME_VSYSCALL
52 select SYSCTL_ARCH_UNALIGN_NO_WARN
53 select HAVE_MOD_ARCH_SPECIFIC
54 select MODULES_USE_ELF_RELA
55 select ARCH_USE_CMPXCHG_LOCKREF
56 select HAVE_ARCH_AUDITSYSCALL
57 default y
58 help
59 The Itanium Processor Family is Intel's 64-bit successor to
60 the 32-bit X86 line. The IA-64 Linux project has a home
61 page at <http://www.linuxia64.org/> and a mailing list at
62 <linux-ia64@vger.kernel.org>.
63
64config 64BIT
65 bool
66 select ATA_NONSTANDARD if ATA
67 default y
68
69config ZONE_DMA32
70 def_bool y
71 depends on !IA64_SGI_SN2
72
73config QUICKLIST
74 bool
75 default y
76
77config MMU
78 bool
79 default y
80
81config ARCH_DMA_ADDR_T_64BIT
82 def_bool y
83
84config NEED_DMA_MAP_STATE
85 def_bool y
86
87config NEED_SG_DMA_LENGTH
88 def_bool y
89
90config SWIOTLB
91 bool
92
93config STACKTRACE_SUPPORT
94 def_bool y
95
96config GENERIC_LOCKBREAK
97 def_bool n
98
99config RWSEM_XCHGADD_ALGORITHM
100 bool
101 default y
102
103config HUGETLB_PAGE_SIZE_VARIABLE
104 bool
105 depends on HUGETLB_PAGE
106 default y
107
108config GENERIC_CALIBRATE_DELAY
109 bool
110 default y
111
112config HAVE_SETUP_PER_CPU_AREA
113 def_bool y
114
115config DMI
116 bool
117 default y
118 select DMI_SCAN_MACHINE_NON_EFI_FALLBACK
119
120config EFI
121 bool
122 select UCS2_STRING
123 default y
124
125config SCHED_OMIT_FRAME_POINTER
126 bool
127 default y
128
129config IA64_UNCACHED_ALLOCATOR
130 bool
131 select GENERIC_ALLOCATOR
132
133config ARCH_USES_PG_UNCACHED
134 def_bool y
135 depends on IA64_UNCACHED_ALLOCATOR
136
137config AUDIT_ARCH
138 bool
139 default y
140
141choice
142 prompt "System type"
143 default IA64_GENERIC
144
145config IA64_GENERIC
146 bool "generic"
147 select NUMA
148 select ACPI_NUMA
149 select DMA_DIRECT_OPS
150 select SWIOTLB
151 select PCI_MSI
152 help
153 This selects the system type of your hardware. A "generic" kernel
154 will run on any supported IA-64 system. However, if you configure
155 a kernel for your specific system, it will be faster and smaller.
156
157 generic For any supported IA-64 system
158 DIG-compliant For DIG ("Developer's Interface Guide") compliant systems
159 DIG+Intel+IOMMU For DIG systems with Intel IOMMU
160 HP-zx1/sx1000 For HP systems
161 HP-zx1/sx1000+swiotlb For HP systems with (broken) DMA-constrained devices.
162 SGI-SN2 For SGI Altix systems
163 SGI-UV For SGI UV systems
164 Ski-simulator For the HP simulator <http://www.hpl.hp.com/research/linux/ski/>
165
166 If you don't know what to do, choose "generic".
167
168config IA64_DIG
169 bool "DIG-compliant"
170 select DMA_DIRECT_OPS
171 select SWIOTLB
172
173config IA64_DIG_VTD
174 bool "DIG+Intel+IOMMU"
175 select INTEL_IOMMU
176 select PCI_MSI
177
178config IA64_HP_ZX1
179 bool "HP-zx1/sx1000"
180 help
181 Build a kernel that runs on HP zx1 and sx1000 systems. This adds
182 support for the HP I/O MMU.
183
184config IA64_HP_ZX1_SWIOTLB
185 bool "HP-zx1/sx1000 with software I/O TLB"
186 select DMA_DIRECT_OPS
187 select SWIOTLB
188 help
189 Build a kernel that runs on HP zx1 and sx1000 systems even when they
190 have broken PCI devices which cannot DMA to full 32 bits. Apart
191 from support for the HP I/O MMU, this includes support for the software
192 I/O TLB, which allows supporting the broken devices at the expense of
193 wasting some kernel memory (about 2MB by default).
194
195config IA64_SGI_SN2
196 bool "SGI-SN2"
197 select NUMA
198 select ACPI_NUMA
199 help
200 Selecting this option will optimize the kernel for use on sn2 based
201 systems, but the resulting kernel binary will not run on other
202 types of ia64 systems. If you have an SGI Altix system, it's safe
203 to select this option. If in doubt, select ia64 generic support
204 instead.
205
206config IA64_SGI_UV
207 bool "SGI-UV"
208 select NUMA
209 select ACPI_NUMA
210 select DMA_DIRECT_OPS
211 select SWIOTLB
212 help
213 Selecting this option will optimize the kernel for use on UV based
214 systems, but the resulting kernel binary will not run on other
215 types of ia64 systems. If you have an SGI UV system, it's safe
216 to select this option. If in doubt, select ia64 generic support
217 instead.
218
219config IA64_HP_SIM
220 bool "Ski-simulator"
221 select DMA_DIRECT_OPS
222 select SWIOTLB
223 depends on !PM
224
225endchoice
226
227choice
228 prompt "Processor type"
229 default ITANIUM
230
231config ITANIUM
232 bool "Itanium"
233 help
234 Select your IA-64 processor type. The default is Itanium.
235 This choice is safe for all IA-64 systems, but may not perform
236 optimally on systems with, say, Itanium 2 or newer processors.
237
238config MCKINLEY
239 bool "Itanium 2"
240 help
241 Select this to configure for an Itanium 2 (McKinley) processor.
242
243endchoice
244
245choice
246 prompt "Kernel page size"
247 default IA64_PAGE_SIZE_16KB
248
249config IA64_PAGE_SIZE_4KB
250 bool "4KB"
251 help
252 This lets you select the page size of the kernel. For best IA-64
253 performance, a page size of 8KB or 16KB is recommended. For best
254 IA-32 compatibility, a page size of 4KB should be selected (the vast
255 majority of IA-32 binaries work perfectly fine with a larger page
256 size). For Itanium 2 or newer systems, a page size of 64KB can also
257 be selected.
258
259 4KB For best IA-32 compatibility
260 8KB For best IA-64 performance
261 16KB For best IA-64 performance
262 64KB Requires Itanium 2 or newer processor.
263
264 If you don't know what to do, choose 16KB.
265
266config IA64_PAGE_SIZE_8KB
267 bool "8KB"
268
269config IA64_PAGE_SIZE_16KB
270 bool "16KB"
271
272config IA64_PAGE_SIZE_64KB
273 depends on !ITANIUM
274 bool "64KB"
275
276endchoice
277
278if IA64_HP_SIM
279config HZ
280 default 32
281endif
282
283if !IA64_HP_SIM
284source kernel/Kconfig.hz
285endif
286
287config IA64_BRL_EMU
288 bool
289 depends on ITANIUM
290 default y
291
292# align cache-sensitive data to 128 bytes
293config IA64_L1_CACHE_SHIFT
294 int
295 default "7" if MCKINLEY
296 default "6" if ITANIUM
297
298config IA64_CYCLONE
299 bool "Cyclone (EXA) Time Source support"
300 help
301 Say Y here to enable support for IBM EXA Cyclone time source.
302 If you're unsure, answer N.
303
304config IOSAPIC
305 bool
306 depends on !IA64_HP_SIM
307 default y
308
309config FORCE_MAX_ZONEORDER
310 int "MAX_ORDER (11 - 17)" if !HUGETLB_PAGE
311 range 11 17 if !HUGETLB_PAGE
312 default "17" if HUGETLB_PAGE
313 default "11"
314
315config SMP
316 bool "Symmetric multi-processing support"
317 help
318 This enables support for systems with more than one CPU. If you have
319 a system with only one CPU, say N. If you have a system with more
320 than one CPU, say Y.
321
322 If you say N here, the kernel will run on single and multiprocessor
323 systems, but will use only one CPU of a multiprocessor system. If
324 you say Y here, the kernel will run on many, but not all,
325 single processor systems. On a single processor system, the kernel
326 will run faster if you say N here.
327
328 See also the SMP-HOWTO available at
329 <http://www.tldp.org/docs.html#howto>.
330
331 If you don't know what to do here, say N.
332
333config NR_CPUS
334 int "Maximum number of CPUs (2-4096)"
335 range 2 4096
336 depends on SMP
337 default "4096"
338 help
339 You should set this to the number of CPUs in your system, but
340 keep in mind that a kernel compiled for, e.g., 2 CPUs will boot but
341 only use 2 CPUs on a >2 CPU system. Setting this to a value larger
342 than 64 will cause the use of a CPU mask array, causing a small
343 performance hit.
344
345config HOTPLUG_CPU
346 bool "Support for hot-pluggable CPUs"
347 depends on SMP
348 default n
349 ---help---
350 Say Y here to experiment with turning CPUs off and on. CPUs
351 can be controlled through /sys/devices/system/cpu/cpu#.
352 Say N if you want to disable CPU hotplug.
353
354config ARCH_ENABLE_MEMORY_HOTPLUG
355 def_bool y
356
357config ARCH_ENABLE_MEMORY_HOTREMOVE
358 def_bool y
359
360config SCHED_SMT
361 bool "SMT scheduler support"
362 depends on SMP
363 help
364 Improves the CPU scheduler's decision making when dealing with
365 Intel IA64 chips with MultiThreading at a cost of slightly increased
366 overhead in some places. If unsure say N here.
367
368config PERMIT_BSP_REMOVE
369 bool "Support removal of Bootstrap Processor"
370 depends on HOTPLUG_CPU
371 default n
372 ---help---
373 Say Y here if your platform SAL will support removal of BSP with HOTPLUG_CPU
374 support.
375
376config FORCE_CPEI_RETARGET
377 bool "Force assumption that CPEI can be re-targeted"
378 depends on PERMIT_BSP_REMOVE
379 default n
380 ---help---
381 Say Y if you need to force the assumption that CPEI can be re-targeted to
382 any cpu in the system. This hint is available via ACPI 3.0 specifications.
383 Tiger4 systems are capable of re-directing CPEI to any CPU other than BSP.
384 This option it useful to enable this feature on older BIOS's as well.
385 You can also enable this by using boot command line option force_cpei=1.
386
387source "kernel/Kconfig.preempt"
388
389source "mm/Kconfig"
390
391config ARCH_SELECT_MEMORY_MODEL
392 def_bool y
393
394config ARCH_DISCONTIGMEM_ENABLE
395 def_bool y
396 help
397 Say Y to support efficient handling of discontiguous physical memory,
398 for architectures which are either NUMA (Non-Uniform Memory Access)
399 or have huge holes in the physical address space for other reasons.
400 See <file:Documentation/vm/numa> for more.
401
402config ARCH_FLATMEM_ENABLE
403 def_bool y
404
405config ARCH_SPARSEMEM_ENABLE
406 def_bool y
407 depends on ARCH_DISCONTIGMEM_ENABLE
408 select SPARSEMEM_VMEMMAP_ENABLE
409
410config ARCH_DISCONTIGMEM_DEFAULT
411 def_bool y if (IA64_SGI_SN2 || IA64_GENERIC || IA64_HP_ZX1 || IA64_HP_ZX1_SWIOTLB)
412 depends on ARCH_DISCONTIGMEM_ENABLE
413
414config NUMA
415 bool "NUMA support"
416 depends on !IA64_HP_SIM && !FLATMEM
417 default y if IA64_SGI_SN2
418 select ACPI_NUMA if ACPI
419 help
420 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
421 Access). This option is for configuring high-end multiprocessor
422 server systems. If in doubt, say N.
423
424config NODES_SHIFT
425 int "Max num nodes shift(3-10)"
426 range 3 10
427 default "10"
428 depends on NEED_MULTIPLE_NODES
429 help
430 This option specifies the maximum number of nodes in your SSI system.
431 MAX_NUMNODES will be 2^(This value).
432 If in doubt, use the default.
433
434# VIRTUAL_MEM_MAP and FLAT_NODE_MEM_MAP are functionally equivalent.
435# VIRTUAL_MEM_MAP has been retained for historical reasons.
436config VIRTUAL_MEM_MAP
437 bool "Virtual mem map"
438 depends on !SPARSEMEM
439 default y if !IA64_HP_SIM
440 help
441 Say Y to compile the kernel with support for a virtual mem map.
442 This code also only takes effect if a memory hole of greater than
443 1 Gb is found during boot. You must turn this option on if you
444 require the DISCONTIGMEM option for your machine. If you are
445 unsure, say Y.
446
447config HOLES_IN_ZONE
448 bool
449 default y if VIRTUAL_MEM_MAP
450
451config HAVE_ARCH_EARLY_PFN_TO_NID
452 def_bool NUMA && SPARSEMEM
453
454config HAVE_ARCH_NODEDATA_EXTENSION
455 def_bool y
456 depends on NUMA
457
458config USE_PERCPU_NUMA_NODE_ID
459 def_bool y
460 depends on NUMA
461
462config HAVE_MEMORYLESS_NODES
463 def_bool NUMA
464
465config ARCH_PROC_KCORE_TEXT
466 def_bool y
467 depends on PROC_KCORE
468
469config IA64_MCA_RECOVERY
470 tristate "MCA recovery from errors other than TLB."
471
472config PERFMON
473 bool "Performance monitor support"
474 help
475 Selects whether support for the IA-64 performance monitor hardware
476 is included in the kernel. This makes some kernel data-structures a
477 little bigger and slows down execution a bit, but it is generally
478 a good idea to turn this on. If you're unsure, say Y.
479
480config IA64_PALINFO
481 tristate "/proc/pal support"
482 help
483 If you say Y here, you are able to get PAL (Processor Abstraction
484 Layer) information in /proc/pal. This contains useful information
485 about the processors in your systems, such as cache and TLB sizes
486 and the PAL firmware version in use.
487
488 To use this option, you have to ensure that the "/proc file system
489 support" (CONFIG_PROC_FS) is enabled, too.
490
491config IA64_MC_ERR_INJECT
492 tristate "MC error injection support"
493 help
494 Adds support for MC error injection. If enabled, the kernel
495 will provide a sysfs interface for user applications to
496 call MC error injection PAL procedures to inject various errors.
497 This is a useful tool for MCA testing.
498
499 If you're unsure, do not select this option.
500
501config SGI_SN
502 def_bool y if (IA64_SGI_SN2 || IA64_GENERIC)
503
504config IA64_ESI
505 bool "ESI (Extensible SAL Interface) support"
506 help
507 If you say Y here, support is built into the kernel to
508 make ESI calls. ESI calls are used to support vendor-specific
509 firmware extensions, such as the ability to inject memory-errors
510 for test-purposes. If you're unsure, say N.
511
512config IA64_HP_AML_NFW
513 bool "Support ACPI AML calls to native firmware"
514 help
515 This driver installs a global ACPI Operation Region handler for
516 region 0xA1. AML methods can use this OpRegion to call arbitrary
517 native firmware functions. The driver installs the OpRegion
518 handler if there is an HPQ5001 device or if the user supplies
519 the "force" module parameter, e.g., with the "aml_nfw.force"
520 kernel command line option.
521
522source "drivers/sn/Kconfig"
523
524config KEXEC
525 bool "kexec system call"
526 depends on !IA64_HP_SIM && (!SMP || HOTPLUG_CPU)
527 select KEXEC_CORE
528 help
529 kexec is a system call that implements the ability to shutdown your
530 current kernel, and to start another kernel. It is like a reboot
531 but it is independent of the system firmware. And like a reboot
532 you can start any kernel with it, not just Linux.
533
534 The name comes from the similarity to the exec system call.
535
536 It is an ongoing process to be certain the hardware in a machine
537 is properly shutdown, so do not be surprised if this code does not
538 initially work for you. As of this writing the exact hardware
539 interface is strongly in flux, so no good recommendation can be
540 made.
541
542config CRASH_DUMP
543 bool "kernel crash dumps"
544 depends on IA64_MCA_RECOVERY && !IA64_HP_SIM && (!SMP || HOTPLUG_CPU)
545 help
546 Generate crash dump after being started by kexec.
547
548source "drivers/firmware/Kconfig"
549
550source "fs/Kconfig.binfmt"
551
552endmenu
553
554menu "Power management and ACPI options"
555
556source "kernel/power/Kconfig"
557
558source "drivers/acpi/Kconfig"
559
560if PM
561menu "CPU Frequency scaling"
562source "drivers/cpufreq/Kconfig"
563endmenu
564endif
565
566endmenu
567
568if !IA64_HP_SIM
569
570menu "Bus options (PCI, PCMCIA)"
571
572config PCI
573 bool "PCI support"
574 help
575 Real IA-64 machines all have PCI/PCI-X/PCI Express busses. Say Y
576 here unless you are using a simulator without PCI support.
577
578config PCI_DOMAINS
579 def_bool PCI
580
581config PCI_SYSCALL
582 def_bool PCI
583
584source "drivers/pci/Kconfig"
585
586source "drivers/pcmcia/Kconfig"
587
588endmenu
589
590endif
591
592source "net/Kconfig"
593
594source "drivers/Kconfig"
595
596source "arch/ia64/hp/sim/Kconfig"
597
598config MSPEC
599 tristate "Memory special operations driver"
600 depends on IA64
601 select IA64_UNCACHED_ALLOCATOR
602 help
603 If you have an ia64 and you want to enable memory special
604 operations support (formerly known as fetchop), say Y here,
605 otherwise say N.
606
607source "fs/Kconfig"
608
609source "arch/ia64/Kconfig.debug"
610
611source "security/Kconfig"
612
613source "crypto/Kconfig"
614
615source "lib/Kconfig"
616
617config IOMMU_HELPER
618 def_bool (IA64_HP_ZX1 || IA64_HP_ZX1_SWIOTLB || IA64_GENERIC || SWIOTLB)
1# SPDX-License-Identifier: GPL-2.0
2config PGTABLE_LEVELS
3 int "Page Table Levels" if !IA64_PAGE_SIZE_64KB
4 range 3 4 if !IA64_PAGE_SIZE_64KB
5 default 3
6
7menu "Processor type and features"
8
9config IA64
10 bool
11 select ARCH_MIGHT_HAVE_PC_PARPORT
12 select ARCH_MIGHT_HAVE_PC_SERIO
13 select ACPI
14 select ACPI_NUMA if NUMA
15 select ARCH_SUPPORTS_ACPI
16 select ACPI_SYSTEM_POWER_STATES_SUPPORT if ACPI
17 select ARCH_MIGHT_HAVE_ACPI_PDC if ACPI
18 select FORCE_PCI
19 select PCI_DOMAINS if PCI
20 select PCI_MSI
21 select PCI_SYSCALL if PCI
22 select HAVE_ASM_MODVERSIONS
23 select HAVE_UNSTABLE_SCHED_CLOCK
24 select HAVE_EXIT_THREAD
25 select HAVE_IDE
26 select HAVE_OPROFILE
27 select HAVE_KPROBES
28 select HAVE_KRETPROBES
29 select HAVE_FTRACE_MCOUNT_RECORD
30 select HAVE_DYNAMIC_FTRACE if (!ITANIUM)
31 select HAVE_FUNCTION_TRACER
32 select TTY
33 select HAVE_ARCH_TRACEHOOK
34 select HAVE_VIRT_CPU_ACCOUNTING
35 select DMA_NONCOHERENT_MMAP
36 select ARCH_HAS_SYNC_DMA_FOR_CPU
37 select VIRT_TO_BUS
38 select GENERIC_IRQ_PROBE
39 select GENERIC_PENDING_IRQ if SMP
40 select GENERIC_IRQ_SHOW
41 select GENERIC_IRQ_LEGACY
42 select ARCH_HAVE_NMI_SAFE_CMPXCHG
43 select GENERIC_IOMAP
44 select GENERIC_SMP_IDLE_THREAD
45 select ARCH_TASK_STRUCT_ON_STACK
46 select ARCH_TASK_STRUCT_ALLOCATOR
47 select ARCH_THREAD_STACK_ALLOCATOR
48 select ARCH_CLOCKSOURCE_DATA
49 select GENERIC_TIME_VSYSCALL
50 select SWIOTLB
51 select SYSCTL_ARCH_UNALIGN_NO_WARN
52 select HAVE_MOD_ARCH_SPECIFIC
53 select MODULES_USE_ELF_RELA
54 select ARCH_USE_CMPXCHG_LOCKREF
55 select HAVE_ARCH_AUDITSYSCALL
56 select NEED_DMA_MAP_STATE
57 select NEED_SG_DMA_LENGTH
58 select NUMA if !FLATMEM
59 default y
60 help
61 The Itanium Processor Family is Intel's 64-bit successor to
62 the 32-bit X86 line. The IA-64 Linux project has a home
63 page at <http://www.linuxia64.org/> and a mailing list at
64 <linux-ia64@vger.kernel.org>.
65
66config 64BIT
67 bool
68 select ATA_NONSTANDARD if ATA
69 default y
70
71config ZONE_DMA32
72 def_bool y
73
74config MMU
75 bool
76 default y
77
78config STACKTRACE_SUPPORT
79 def_bool y
80
81config GENERIC_LOCKBREAK
82 def_bool n
83
84config HUGETLB_PAGE_SIZE_VARIABLE
85 bool
86 depends on HUGETLB_PAGE
87 default y
88
89config GENERIC_CALIBRATE_DELAY
90 bool
91 default y
92
93config HAVE_SETUP_PER_CPU_AREA
94 def_bool y
95
96config DMI
97 bool
98 default y
99 select DMI_SCAN_MACHINE_NON_EFI_FALLBACK
100
101config EFI
102 bool
103 select UCS2_STRING
104 default y
105
106config SCHED_OMIT_FRAME_POINTER
107 bool
108 default y
109
110config IA64_UNCACHED_ALLOCATOR
111 bool
112 select GENERIC_ALLOCATOR
113
114config ARCH_USES_PG_UNCACHED
115 def_bool y
116 depends on IA64_UNCACHED_ALLOCATOR
117
118config AUDIT_ARCH
119 bool
120 default y
121
122choice
123 prompt "Processor type"
124 default ITANIUM
125
126config ITANIUM
127 bool "Itanium"
128 help
129 Select your IA-64 processor type. The default is Itanium.
130 This choice is safe for all IA-64 systems, but may not perform
131 optimally on systems with, say, Itanium 2 or newer processors.
132
133config MCKINLEY
134 bool "Itanium 2"
135 help
136 Select this to configure for an Itanium 2 (McKinley) processor.
137
138endchoice
139
140choice
141 prompt "Kernel page size"
142 default IA64_PAGE_SIZE_16KB
143
144config IA64_PAGE_SIZE_4KB
145 bool "4KB"
146 help
147 This lets you select the page size of the kernel. For best IA-64
148 performance, a page size of 8KB or 16KB is recommended. For best
149 IA-32 compatibility, a page size of 4KB should be selected (the vast
150 majority of IA-32 binaries work perfectly fine with a larger page
151 size). For Itanium 2 or newer systems, a page size of 64KB can also
152 be selected.
153
154 4KB For best IA-32 compatibility
155 8KB For best IA-64 performance
156 16KB For best IA-64 performance
157 64KB Requires Itanium 2 or newer processor.
158
159 If you don't know what to do, choose 16KB.
160
161config IA64_PAGE_SIZE_8KB
162 bool "8KB"
163
164config IA64_PAGE_SIZE_16KB
165 bool "16KB"
166
167config IA64_PAGE_SIZE_64KB
168 depends on !ITANIUM
169 bool "64KB"
170
171endchoice
172
173source "kernel/Kconfig.hz"
174
175config IA64_BRL_EMU
176 bool
177 depends on ITANIUM
178 default y
179
180# align cache-sensitive data to 128 bytes
181config IA64_L1_CACHE_SHIFT
182 int
183 default "7" if MCKINLEY
184 default "6" if ITANIUM
185
186config IA64_SGI_UV
187 bool "SGI-UV support"
188 help
189 Selecting this option will add specific support for running on SGI
190 UV based systems. If you have an SGI UV system or are building a
191 distro kernel, select this option.
192
193config IA64_HP_SBA_IOMMU
194 bool "HP SBA IOMMU support"
195 select DMA_OPS
196 default y
197 help
198 Say Y here to add support for the SBA IOMMU found on HP zx1 and
199 sx1000 systems. If you're unsure, answer Y.
200
201config IA64_CYCLONE
202 bool "Cyclone (EXA) Time Source support"
203 help
204 Say Y here to enable support for IBM EXA Cyclone time source.
205 If you're unsure, answer N.
206
207config FORCE_MAX_ZONEORDER
208 int "MAX_ORDER (11 - 17)" if !HUGETLB_PAGE
209 range 11 17 if !HUGETLB_PAGE
210 default "17" if HUGETLB_PAGE
211 default "11"
212
213config SMP
214 bool "Symmetric multi-processing support"
215 help
216 This enables support for systems with more than one CPU. If you have
217 a system with only one CPU, say N. If you have a system with more
218 than one CPU, say Y.
219
220 If you say N here, the kernel will run on single and multiprocessor
221 systems, but will use only one CPU of a multiprocessor system. If
222 you say Y here, the kernel will run on many, but not all,
223 single processor systems. On a single processor system, the kernel
224 will run faster if you say N here.
225
226 See also the SMP-HOWTO available at
227 <http://www.tldp.org/docs.html#howto>.
228
229 If you don't know what to do here, say N.
230
231config NR_CPUS
232 int "Maximum number of CPUs (2-4096)"
233 range 2 4096
234 depends on SMP
235 default "4096"
236 help
237 You should set this to the number of CPUs in your system, but
238 keep in mind that a kernel compiled for, e.g., 2 CPUs will boot but
239 only use 2 CPUs on a >2 CPU system. Setting this to a value larger
240 than 64 will cause the use of a CPU mask array, causing a small
241 performance hit.
242
243config HOTPLUG_CPU
244 bool "Support for hot-pluggable CPUs"
245 depends on SMP
246 default n
247 help
248 Say Y here to experiment with turning CPUs off and on. CPUs
249 can be controlled through /sys/devices/system/cpu/cpu#.
250 Say N if you want to disable CPU hotplug.
251
252config ARCH_ENABLE_MEMORY_HOTPLUG
253 def_bool y
254
255config ARCH_ENABLE_MEMORY_HOTREMOVE
256 def_bool y
257
258config SCHED_SMT
259 bool "SMT scheduler support"
260 depends on SMP
261 help
262 Improves the CPU scheduler's decision making when dealing with
263 Intel IA64 chips with MultiThreading at a cost of slightly increased
264 overhead in some places. If unsure say N here.
265
266config PERMIT_BSP_REMOVE
267 bool "Support removal of Bootstrap Processor"
268 depends on HOTPLUG_CPU
269 default n
270 help
271 Say Y here if your platform SAL will support removal of BSP with HOTPLUG_CPU
272 support.
273
274config FORCE_CPEI_RETARGET
275 bool "Force assumption that CPEI can be re-targeted"
276 depends on PERMIT_BSP_REMOVE
277 default n
278 help
279 Say Y if you need to force the assumption that CPEI can be re-targeted to
280 any cpu in the system. This hint is available via ACPI 3.0 specifications.
281 Tiger4 systems are capable of re-directing CPEI to any CPU other than BSP.
282 This option it useful to enable this feature on older BIOS's as well.
283 You can also enable this by using boot command line option force_cpei=1.
284
285config ARCH_SELECT_MEMORY_MODEL
286 def_bool y
287
288config ARCH_DISCONTIGMEM_ENABLE
289 def_bool y
290 help
291 Say Y to support efficient handling of discontiguous physical memory,
292 for architectures which are either NUMA (Non-Uniform Memory Access)
293 or have huge holes in the physical address space for other reasons.
294 See <file:Documentation/vm/numa.rst> for more.
295
296config ARCH_FLATMEM_ENABLE
297 def_bool y
298
299config ARCH_SPARSEMEM_ENABLE
300 def_bool y
301 depends on ARCH_DISCONTIGMEM_ENABLE
302 select SPARSEMEM_VMEMMAP_ENABLE
303
304config ARCH_DISCONTIGMEM_DEFAULT
305 def_bool y
306 depends on ARCH_DISCONTIGMEM_ENABLE
307
308config NUMA
309 bool "NUMA support"
310 depends on !FLATMEM
311 select SMP
312 help
313 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
314 Access). This option is for configuring high-end multiprocessor
315 server systems. If in doubt, say N.
316
317config NODES_SHIFT
318 int "Max num nodes shift(3-10)"
319 range 3 10
320 default "10"
321 depends on NEED_MULTIPLE_NODES
322 help
323 This option specifies the maximum number of nodes in your SSI system.
324 MAX_NUMNODES will be 2^(This value).
325 If in doubt, use the default.
326
327# VIRTUAL_MEM_MAP and FLAT_NODE_MEM_MAP are functionally equivalent.
328# VIRTUAL_MEM_MAP has been retained for historical reasons.
329config VIRTUAL_MEM_MAP
330 bool "Virtual mem map"
331 depends on !SPARSEMEM
332 default y
333 help
334 Say Y to compile the kernel with support for a virtual mem map.
335 This code also only takes effect if a memory hole of greater than
336 1 Gb is found during boot. You must turn this option on if you
337 require the DISCONTIGMEM option for your machine. If you are
338 unsure, say Y.
339
340config HOLES_IN_ZONE
341 bool
342 default y if VIRTUAL_MEM_MAP
343
344config HAVE_ARCH_EARLY_PFN_TO_NID
345 def_bool NUMA && SPARSEMEM
346
347config HAVE_ARCH_NODEDATA_EXTENSION
348 def_bool y
349 depends on NUMA
350
351config USE_PERCPU_NUMA_NODE_ID
352 def_bool y
353 depends on NUMA
354
355config HAVE_MEMORYLESS_NODES
356 def_bool NUMA
357
358config ARCH_PROC_KCORE_TEXT
359 def_bool y
360 depends on PROC_KCORE
361
362config IA64_MCA_RECOVERY
363 tristate "MCA recovery from errors other than TLB."
364
365config PERFMON
366 bool "Performance monitor support"
367 depends on BROKEN
368 help
369 Selects whether support for the IA-64 performance monitor hardware
370 is included in the kernel. This makes some kernel data-structures a
371 little bigger and slows down execution a bit, but it is generally
372 a good idea to turn this on. If you're unsure, say Y.
373
374config IA64_PALINFO
375 tristate "/proc/pal support"
376 help
377 If you say Y here, you are able to get PAL (Processor Abstraction
378 Layer) information in /proc/pal. This contains useful information
379 about the processors in your systems, such as cache and TLB sizes
380 and the PAL firmware version in use.
381
382 To use this option, you have to ensure that the "/proc file system
383 support" (CONFIG_PROC_FS) is enabled, too.
384
385config IA64_MC_ERR_INJECT
386 tristate "MC error injection support"
387 help
388 Adds support for MC error injection. If enabled, the kernel
389 will provide a sysfs interface for user applications to
390 call MC error injection PAL procedures to inject various errors.
391 This is a useful tool for MCA testing.
392
393 If you're unsure, do not select this option.
394
395config IA64_ESI
396 bool "ESI (Extensible SAL Interface) support"
397 help
398 If you say Y here, support is built into the kernel to
399 make ESI calls. ESI calls are used to support vendor-specific
400 firmware extensions, such as the ability to inject memory-errors
401 for test-purposes. If you're unsure, say N.
402
403config IA64_HP_AML_NFW
404 bool "Support ACPI AML calls to native firmware"
405 help
406 This driver installs a global ACPI Operation Region handler for
407 region 0xA1. AML methods can use this OpRegion to call arbitrary
408 native firmware functions. The driver installs the OpRegion
409 handler if there is an HPQ5001 device or if the user supplies
410 the "force" module parameter, e.g., with the "aml_nfw.force"
411 kernel command line option.
412
413config KEXEC
414 bool "kexec system call"
415 depends on !SMP || HOTPLUG_CPU
416 select KEXEC_CORE
417 help
418 kexec is a system call that implements the ability to shutdown your
419 current kernel, and to start another kernel. It is like a reboot
420 but it is independent of the system firmware. And like a reboot
421 you can start any kernel with it, not just Linux.
422
423 The name comes from the similarity to the exec system call.
424
425 It is an ongoing process to be certain the hardware in a machine
426 is properly shutdown, so do not be surprised if this code does not
427 initially work for you. As of this writing the exact hardware
428 interface is strongly in flux, so no good recommendation can be
429 made.
430
431config CRASH_DUMP
432 bool "kernel crash dumps"
433 depends on IA64_MCA_RECOVERY && (!SMP || HOTPLUG_CPU)
434 help
435 Generate crash dump after being started by kexec.
436
437source "drivers/firmware/Kconfig"
438
439endmenu
440
441menu "Power management and ACPI options"
442
443source "kernel/power/Kconfig"
444
445source "drivers/acpi/Kconfig"
446
447if PM
448menu "CPU Frequency scaling"
449source "drivers/cpufreq/Kconfig"
450endmenu
451endif
452
453endmenu
454
455config MSPEC
456 tristate "Memory special operations driver"
457 depends on IA64
458 select IA64_UNCACHED_ALLOCATOR
459 help
460 If you have an ia64 and you want to enable memory special
461 operations support (formerly known as fetchop), say Y here,
462 otherwise say N.