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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
7menu "Processor type and features"
8
9config IA64
10	bool
11	select ARCH_HAS_CPU_FINALIZE_INIT
12	select ARCH_HAS_DMA_MARK_CLEAN
13	select ARCH_MIGHT_HAVE_PC_PARPORT
14	select ARCH_MIGHT_HAVE_PC_SERIO
15	select ACPI
16	select ACPI_NUMA if NUMA
17	select ARCH_SUPPORTS_ACPI
18	select ACPI_SYSTEM_POWER_STATES_SUPPORT if ACPI
19	select ARCH_MIGHT_HAVE_ACPI_PDC if ACPI
20	select FORCE_PCI
21	select PCI_DOMAINS if PCI
22	select PCI_MSI
23	select PCI_SYSCALL if PCI
24	select HAVE_ASM_MODVERSIONS
25	select HAVE_UNSTABLE_SCHED_CLOCK
26	select HAVE_EXIT_THREAD
27	select HAVE_IDE
28	select HAVE_OPROFILE
29	select HAVE_KPROBES
30	select HAVE_KRETPROBES
31	select HAVE_FTRACE_MCOUNT_RECORD
32	select HAVE_DYNAMIC_FTRACE if (!ITANIUM)
33	select HAVE_FUNCTION_TRACER
34	select TTY
35	select HAVE_ARCH_TRACEHOOK
36	select HAVE_VIRT_CPU_ACCOUNTING
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	select PCI_MSI_ARCH_FALLBACKS if PCI_MSI
60	select SET_FS
61	default y
62	help
63	  The Itanium Processor Family is Intel's 64-bit successor to
64	  the 32-bit X86 line.  The IA-64 Linux project has a home
65	  page at <http://www.linuxia64.org/> and a mailing list at
66	  <linux-ia64@vger.kernel.org>.
67
68config 64BIT
69	bool
70	select ATA_NONSTANDARD if ATA
71	default y
72
73config ZONE_DMA32
74	def_bool y
75
76config MMU
77	bool
78	default y
79
80config STACKTRACE_SUPPORT
81	def_bool y
82
83config GENERIC_LOCKBREAK
84	def_bool n
85
86config HUGETLB_PAGE_SIZE_VARIABLE
87	bool
88	depends on HUGETLB_PAGE
89	default y
90
91config GENERIC_CALIBRATE_DELAY
92	bool
93	default y
94
95config HAVE_SETUP_PER_CPU_AREA
96	def_bool y
97
98config DMI
99	bool
100	default y
101	select DMI_SCAN_MACHINE_NON_EFI_FALLBACK
102
103config EFI
104	bool
105	select UCS2_STRING
106	default y
107
108config SCHED_OMIT_FRAME_POINTER
109	bool
110	default y
111
112config IA64_UNCACHED_ALLOCATOR
113	bool
114	select GENERIC_ALLOCATOR
115
116config ARCH_USES_PG_UNCACHED
117	def_bool y
118	depends on IA64_UNCACHED_ALLOCATOR
119
120config AUDIT_ARCH
121	bool
122	default y
123
124choice
125	prompt "Processor type"
126	default ITANIUM
127
128config ITANIUM
129	bool "Itanium"
130	help
131	  Select your IA-64 processor type.  The default is Itanium.
132	  This choice is safe for all IA-64 systems, but may not perform
133	  optimally on systems with, say, Itanium 2 or newer processors.
134
135config MCKINLEY
136	bool "Itanium 2"
137	help
138	  Select this to configure for an Itanium 2 (McKinley) processor.
139
140endchoice
141
142choice
143	prompt "Kernel page size"
144	default IA64_PAGE_SIZE_16KB
145
146config IA64_PAGE_SIZE_4KB
147	bool "4KB"
148	help
149	  This lets you select the page size of the kernel.  For best IA-64
150	  performance, a page size of 8KB or 16KB is recommended.  For best
151	  IA-32 compatibility, a page size of 4KB should be selected (the vast
152	  majority of IA-32 binaries work perfectly fine with a larger page
153	  size).  For Itanium 2 or newer systems, a page size of 64KB can also
154	  be selected.
155
156	  4KB                For best IA-32 compatibility
157	  8KB                For best IA-64 performance
158	  16KB               For best IA-64 performance
159	  64KB               Requires Itanium 2 or newer processor.
160
161	  If you don't know what to do, choose 16KB.
162
163config IA64_PAGE_SIZE_8KB
164	bool "8KB"
165
166config IA64_PAGE_SIZE_16KB
167	bool "16KB"
168
169config IA64_PAGE_SIZE_64KB
170	depends on !ITANIUM
171	bool "64KB"
172
173endchoice
174
175source "kernel/Kconfig.hz"
176
177config IA64_BRL_EMU
178	bool
179	depends on ITANIUM
180	default y
181
182# align cache-sensitive data to 128 bytes
183config IA64_L1_CACHE_SHIFT
184	int
185	default "7" if MCKINLEY
186	default "6" if ITANIUM
187
188config IA64_SGI_UV
189	bool "SGI-UV support"
190	help
191	  Selecting this option will add specific support for running on SGI
192	  UV based systems.  If you have an SGI UV system or are building a
193	  distro kernel, select this option.
194
195config IA64_HP_SBA_IOMMU
196	bool "HP SBA IOMMU support"
197	select DMA_OPS
198	default y
199	help
200	  Say Y here to add support for the SBA IOMMU found on HP zx1 and
201	  sx1000 systems.  If you're unsure, answer Y.
202
203config IA64_CYCLONE
204	bool "Cyclone (EXA) Time Source support"
205	help
206	  Say Y here to enable support for IBM EXA Cyclone time source.
207	  If you're unsure, answer N.
208
209config FORCE_MAX_ZONEORDER
210	int "MAX_ORDER (11 - 17)"  if !HUGETLB_PAGE
211	range 11 17  if !HUGETLB_PAGE
212	default "17" if HUGETLB_PAGE
213	default "11"
214
215config SMP
216	bool "Symmetric multi-processing support"
217	help
218	  This enables support for systems with more than one CPU. If you have
219	  a system with only one CPU, say N.  If you have a system with more
220	  than one CPU, say Y.
221
222	  If you say N here, the kernel will run on single and multiprocessor
223	  systems, but will use only one CPU of a multiprocessor system.  If
224	  you say Y here, the kernel will run on many, but not all,
225	  single processor systems.  On a single processor system, the kernel
226	  will run faster if you say N here.
227
228	  See also the SMP-HOWTO available at
229	  <http://www.tldp.org/docs.html#howto>.
230
231	  If you don't know what to do here, say N.
232
233config NR_CPUS
234	int "Maximum number of CPUs (2-4096)"
235	range 2 4096
236	depends on SMP
237	default "4096"
238	help
239	  You should set this to the number of CPUs in your system, but
240	  keep in mind that a kernel compiled for, e.g., 2 CPUs will boot but
241	  only use 2 CPUs on a >2 CPU system.  Setting this to a value larger
242	  than 64 will cause the use of a CPU mask array, causing a small
243	  performance hit.
244
245config HOTPLUG_CPU
246	bool "Support for hot-pluggable CPUs"
247	depends on SMP
248	default n
249	help
250	  Say Y here to experiment with turning CPUs off and on.  CPUs
251	  can be controlled through /sys/devices/system/cpu/cpu#.
252	  Say N if you want to disable CPU hotplug.
253
254config ARCH_ENABLE_MEMORY_HOTPLUG
255	def_bool y
256
257config ARCH_ENABLE_MEMORY_HOTREMOVE
258	def_bool y
259
260config SCHED_SMT
261	bool "SMT scheduler support"
262	depends on SMP
263	help
264	  Improves the CPU scheduler's decision making when dealing with
265	  Intel IA64 chips with MultiThreading at a cost of slightly increased
266	  overhead in some places. If unsure say N here.
267
268config PERMIT_BSP_REMOVE
269	bool "Support removal of Bootstrap Processor"
270	depends on HOTPLUG_CPU
271	default n
272	help
273	Say Y here if your platform SAL will support removal of BSP with HOTPLUG_CPU
274	support.
275
276config FORCE_CPEI_RETARGET
277	bool "Force assumption that CPEI can be re-targeted"
278	depends on PERMIT_BSP_REMOVE
279	default n
280	help
281	Say Y if you need to force the assumption that CPEI can be re-targeted to
282	any cpu in the system. This hint is available via ACPI 3.0 specifications.
283	Tiger4 systems are capable of re-directing CPEI to any CPU other than BSP.
284	This option it useful to enable this feature on older BIOS's as well.
285	You can also enable this by using boot command line option force_cpei=1.
286
287config ARCH_SELECT_MEMORY_MODEL
288	def_bool y
289
290config ARCH_DISCONTIGMEM_ENABLE
291	def_bool y
292	help
293	  Say Y to support efficient handling of discontiguous physical memory,
294	  for architectures which are either NUMA (Non-Uniform Memory Access)
295	  or have huge holes in the physical address space for other reasons.
296	  See <file:Documentation/vm/numa.rst> for more.
297
298config ARCH_FLATMEM_ENABLE
299	def_bool y
300
301config ARCH_SPARSEMEM_ENABLE
302	def_bool y
303	depends on ARCH_DISCONTIGMEM_ENABLE
304	select SPARSEMEM_VMEMMAP_ENABLE
305
306config ARCH_DISCONTIGMEM_DEFAULT
307	def_bool y
308	depends on ARCH_DISCONTIGMEM_ENABLE
309
310config NUMA
311	bool "NUMA support"
312	depends on !FLATMEM
313	select SMP
314	help
315	  Say Y to compile the kernel to support NUMA (Non-Uniform Memory
316	  Access).  This option is for configuring high-end multiprocessor
317	  server systems.  If in doubt, say N.
318
319config NODES_SHIFT
320	int "Max num nodes shift(3-10)"
321	range 3 10
322	default "10"
323	depends on NEED_MULTIPLE_NODES
324	help
325	  This option specifies the maximum number of nodes in your SSI system.
326	  MAX_NUMNODES will be 2^(This value).
327	  If in doubt, use the default.
328
329# VIRTUAL_MEM_MAP and FLAT_NODE_MEM_MAP are functionally equivalent.
330# VIRTUAL_MEM_MAP has been retained for historical reasons.
331config VIRTUAL_MEM_MAP
332	bool "Virtual mem map"
333	depends on !SPARSEMEM
334	default y
335	help
336	  Say Y to compile the kernel with support for a virtual mem map.
337	  This code also only takes effect if a memory hole of greater than
338	  1 Gb is found during boot.  You must turn this option on if you
339	  require the DISCONTIGMEM option for your machine. If you are
340	  unsure, say Y.
341
342config HOLES_IN_ZONE
343	bool
344	default y if VIRTUAL_MEM_MAP
345
346config HAVE_ARCH_EARLY_PFN_TO_NID
347	def_bool NUMA && SPARSEMEM
348
349config HAVE_ARCH_NODEDATA_EXTENSION
350	def_bool y
351	depends on NUMA
352
353config USE_PERCPU_NUMA_NODE_ID
354	def_bool y
355	depends on NUMA
356
357config HAVE_MEMORYLESS_NODES
358	def_bool NUMA
359
360config ARCH_PROC_KCORE_TEXT
361	def_bool y
362	depends on PROC_KCORE
363
364config IA64_MCA_RECOVERY
365	bool "MCA recovery from errors other than TLB."
366
367config IA64_PALINFO
368	tristate "/proc/pal support"
369	help
370	  If you say Y here, you are able to get PAL (Processor Abstraction
371	  Layer) information in /proc/pal.  This contains useful information
372	  about the processors in your systems, such as cache and TLB sizes
373	  and the PAL firmware version in use.
374
375	  To use this option, you have to ensure that the "/proc file system
376	  support" (CONFIG_PROC_FS) is enabled, too.
377
378config IA64_MC_ERR_INJECT
379	tristate "MC error injection support"
380	help
381	  Adds support for MC error injection. If enabled, the kernel
382	  will provide a sysfs interface for user applications to
383	  call MC error injection PAL procedures to inject various errors.
384	  This is a useful tool for MCA testing.
385
386	  If you're unsure, do not select this option.
387
388config IA64_ESI
389	bool "ESI (Extensible SAL Interface) support"
390	help
391	  If you say Y here, support is built into the kernel to
392	  make ESI calls.  ESI calls are used to support vendor-specific
393	  firmware extensions, such as the ability to inject memory-errors
394	  for test-purposes.  If you're unsure, say N.
395
396config IA64_HP_AML_NFW
397	bool "Support ACPI AML calls to native firmware"
398	help
399	  This driver installs a global ACPI Operation Region handler for
400	  region 0xA1.  AML methods can use this OpRegion to call arbitrary
401	  native firmware functions.  The driver installs the OpRegion
402	  handler if there is an HPQ5001 device or if the user supplies
403	  the "force" module parameter, e.g., with the "aml_nfw.force"
404	  kernel command line option.
405
406config KEXEC
407	bool "kexec system call"
408	depends on !SMP || HOTPLUG_CPU
409	select KEXEC_CORE
410	help
411	  kexec is a system call that implements the ability to shutdown your
412	  current kernel, and to start another kernel.  It is like a reboot
413	  but it is independent of the system firmware.   And like a reboot
414	  you can start any kernel with it, not just Linux.
415
416	  The name comes from the similarity to the exec system call.
417
418	  It is an ongoing process to be certain the hardware in a machine
419	  is properly shutdown, so do not be surprised if this code does not
420	  initially work for you.  As of this writing the exact hardware
421	  interface is strongly in flux, so no good recommendation can be
422	  made.
423
424config CRASH_DUMP
425	  bool "kernel crash dumps"
426	  depends on IA64_MCA_RECOVERY && (!SMP || HOTPLUG_CPU)
427	  help
428	    Generate crash dump after being started by kexec.
429
430source "drivers/firmware/Kconfig"
431
432endmenu
433
434menu "Power management and ACPI options"
435
436source "kernel/power/Kconfig"
437
438source "drivers/acpi/Kconfig"
439
440if PM
441menu "CPU Frequency scaling"
442source "drivers/cpufreq/Kconfig"
443endmenu
444endif
445
446endmenu
447
448config MSPEC
449	tristate "Memory special operations driver"
450	depends on IA64
451	select IA64_UNCACHED_ALLOCATOR
452	help
453	  If you have an ia64 and you want to enable memory special
454	  operations support (formerly known as fetchop), say Y here,
455	  otherwise say N.
456