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_BINFMT_ELF_EXTRA_PHDRS
12	select ARCH_HAS_CPU_FINALIZE_INIT
13	select ARCH_HAS_DMA_MARK_CLEAN
14	select ARCH_HAS_STRNCPY_FROM_USER
15	select ARCH_HAS_STRNLEN_USER
16	select ARCH_MIGHT_HAVE_PC_PARPORT
17	select ARCH_MIGHT_HAVE_PC_SERIO
18	select ACPI
19	select ACPI_NUMA if NUMA
20	select ARCH_ENABLE_MEMORY_HOTPLUG
21	select ARCH_ENABLE_MEMORY_HOTREMOVE
22	select ARCH_SUPPORTS_ACPI
23	select ACPI_SYSTEM_POWER_STATES_SUPPORT if ACPI
24	select ARCH_MIGHT_HAVE_ACPI_PDC if ACPI
25	select FORCE_PCI
26	select PCI_DOMAINS if PCI
27	select PCI_MSI
28	select PCI_SYSCALL if PCI
29	select HAS_IOPORT
30	select HAVE_ASM_MODVERSIONS
31	select HAVE_UNSTABLE_SCHED_CLOCK
32	select HAVE_EXIT_THREAD
33	select HAVE_KPROBES
34	select HAVE_KRETPROBES
35	select HAVE_FTRACE_MCOUNT_RECORD
36	select HAVE_DYNAMIC_FTRACE if (!ITANIUM)
37	select HAVE_FUNCTION_TRACER
38	select HAVE_SETUP_PER_CPU_AREA
39	select TTY
40	select HAVE_ARCH_TRACEHOOK
41	select HAVE_FUNCTION_DESCRIPTORS
42	select HAVE_VIRT_CPU_ACCOUNTING
43	select HUGETLB_PAGE_SIZE_VARIABLE if HUGETLB_PAGE
44	select GENERIC_IRQ_PROBE
45	select GENERIC_PENDING_IRQ if SMP
46	select GENERIC_IRQ_SHOW
47	select GENERIC_IRQ_LEGACY
48	select ARCH_HAVE_NMI_SAFE_CMPXCHG
49	select GENERIC_IOMAP
50	select GENERIC_IOREMAP
51	select GENERIC_SMP_IDLE_THREAD
52	select ARCH_TASK_STRUCT_ON_STACK
53	select ARCH_TASK_STRUCT_ALLOCATOR
54	select ARCH_THREAD_STACK_ALLOCATOR
55	select ARCH_CLOCKSOURCE_DATA
56	select GENERIC_TIME_VSYSCALL
57	select LEGACY_TIMER_TICK
58	select SWIOTLB
59	select SYSCTL_ARCH_UNALIGN_NO_WARN
60	select HAVE_MOD_ARCH_SPECIFIC
61	select MODULES_USE_ELF_RELA
62	select ARCH_USE_CMPXCHG_LOCKREF
63	select HAVE_ARCH_AUDITSYSCALL
64	select NEED_DMA_MAP_STATE
65	select NEED_SG_DMA_LENGTH
66	select NUMA if !FLATMEM
67	select PCI_MSI_ARCH_FALLBACKS if PCI_MSI
68	select ZONE_DMA32
69	select FUNCTION_ALIGNMENT_32B
70	default y
71	help
72	  The Itanium Processor Family is Intel's 64-bit successor to
73	  the 32-bit X86 line.  The IA-64 Linux project has a home
74	  page at <http://www.linuxia64.org/> and a mailing list at
75	  <linux-ia64@vger.kernel.org>.
76
77config 64BIT
78	bool
79	select ATA_NONSTANDARD if ATA
80	default y
81
82config MMU
83	bool
84	default y
85
86config STACKTRACE_SUPPORT
87	def_bool y
88
89config GENERIC_LOCKBREAK
90	def_bool n
91
92config GENERIC_CALIBRATE_DELAY
93	bool
94	default 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 ARCH_FORCE_MAX_ORDER
208	int
209	default "16" if HUGETLB_PAGE
210	default "10"
211
212config SMP
213	bool "Symmetric multi-processing support"
214	help
215	  This enables support for systems with more than one CPU. If you have
216	  a system with only one CPU, say N.  If you have a system with more
217	  than one CPU, say Y.
218
219	  If you say N here, the kernel will run on single and multiprocessor
220	  systems, but will use only one CPU of a multiprocessor system.  If
221	  you say Y here, the kernel will run on many, but not all,
222	  single processor systems.  On a single processor system, the kernel
223	  will run faster if you say N here.
224
225	  See also the SMP-HOWTO available at
226	  <http://www.tldp.org/docs.html#howto>.
227
228	  If you don't know what to do here, say N.
229
230config NR_CPUS
231	int "Maximum number of CPUs (2-4096)"
232	range 2 4096
233	depends on SMP
234	default "4096"
235	help
236	  You should set this to the number of CPUs in your system, but
237	  keep in mind that a kernel compiled for, e.g., 2 CPUs will boot but
238	  only use 2 CPUs on a >2 CPU system.  Setting this to a value larger
239	  than 64 will cause the use of a CPU mask array, causing a small
240	  performance hit.
241
242config HOTPLUG_CPU
243	bool "Support for hot-pluggable CPUs"
244	depends on SMP
245	default n
246	help
247	  Say Y here to experiment with turning CPUs off and on.  CPUs
248	  can be controlled through /sys/devices/system/cpu/cpu#.
249	  Say N if you want to disable CPU hotplug.
250
251config SCHED_SMT
252	bool "SMT scheduler support"
253	depends on SMP
254	help
255	  Improves the CPU scheduler's decision making when dealing with
256	  Intel IA64 chips with MultiThreading at a cost of slightly increased
257	  overhead in some places. If unsure say N here.
258
259config PERMIT_BSP_REMOVE
260	bool "Support removal of Bootstrap Processor"
261	depends on HOTPLUG_CPU
262	default n
263	help
264	Say Y here if your platform SAL will support removal of BSP with HOTPLUG_CPU
265	support.
266
267config FORCE_CPEI_RETARGET
268	bool "Force assumption that CPEI can be re-targeted"
269	depends on PERMIT_BSP_REMOVE
270	default n
271	help
272	Say Y if you need to force the assumption that CPEI can be re-targeted to
273	any cpu in the system. This hint is available via ACPI 3.0 specifications.
274	Tiger4 systems are capable of re-directing CPEI to any CPU other than BSP.
275	This option it useful to enable this feature on older BIOS's as well.
276	You can also enable this by using boot command line option force_cpei=1.
277
278config ARCH_SELECT_MEMORY_MODEL
279	def_bool y
280
281config ARCH_FLATMEM_ENABLE
282	def_bool y
283
284config ARCH_SPARSEMEM_ENABLE
285	def_bool y
286	select SPARSEMEM_VMEMMAP_ENABLE
287
288config ARCH_SPARSEMEM_DEFAULT
289	def_bool y
290	depends on ARCH_SPARSEMEM_ENABLE
291
292config NUMA
293	bool "NUMA support"
294	depends on !FLATMEM
295	select SMP
296	select USE_PERCPU_NUMA_NODE_ID
297	help
298	  Say Y to compile the kernel to support NUMA (Non-Uniform Memory
299	  Access).  This option is for configuring high-end multiprocessor
300	  server systems.  If in doubt, say N.
301
302config NODES_SHIFT
303	int "Max num nodes shift(3-10)"
304	range 3 10
305	default "10"
306	depends on NUMA
307	help
308	  This option specifies the maximum number of nodes in your SSI system.
309	  MAX_NUMNODES will be 2^(This value).
310	  If in doubt, use the default.
311
312config HAVE_ARCH_NODEDATA_EXTENSION
313	def_bool y
314	depends on NUMA
315
316config HAVE_MEMORYLESS_NODES
317	def_bool NUMA
318
319config ARCH_PROC_KCORE_TEXT
320	def_bool y
321	depends on PROC_KCORE
322
323config IA64_MCA_RECOVERY
324	bool "MCA recovery from errors other than TLB."
325
326config IA64_PALINFO
327	tristate "/proc/pal support"
328	help
329	  If you say Y here, you are able to get PAL (Processor Abstraction
330	  Layer) information in /proc/pal.  This contains useful information
331	  about the processors in your systems, such as cache and TLB sizes
332	  and the PAL firmware version in use.
333
334	  To use this option, you have to ensure that the "/proc file system
335	  support" (CONFIG_PROC_FS) is enabled, too.
336
337config IA64_MC_ERR_INJECT
338	tristate "MC error injection support"
339	help
340	  Adds support for MC error injection. If enabled, the kernel
341	  will provide a sysfs interface for user applications to
342	  call MC error injection PAL procedures to inject various errors.
343	  This is a useful tool for MCA testing.
344
345	  If you're unsure, do not select this option.
346
347config IA64_ESI
348	bool "ESI (Extensible SAL Interface) support"
349	help
350	  If you say Y here, support is built into the kernel to
351	  make ESI calls.  ESI calls are used to support vendor-specific
352	  firmware extensions, such as the ability to inject memory-errors
353	  for test-purposes.  If you're unsure, say N.
354
355config IA64_HP_AML_NFW
356	bool "Support ACPI AML calls to native firmware"
357	help
358	  This driver installs a global ACPI Operation Region handler for
359	  region 0xA1.  AML methods can use this OpRegion to call arbitrary
360	  native firmware functions.  The driver installs the OpRegion
361	  handler if there is an HPQ5001 device or if the user supplies
362	  the "force" module parameter, e.g., with the "aml_nfw.force"
363	  kernel command line option.
364
365endmenu
366
367config ARCH_SUPPORTS_KEXEC
368	def_bool !SMP || HOTPLUG_CPU
369
370config ARCH_SUPPORTS_CRASH_DUMP
371	def_bool IA64_MCA_RECOVERY && (!SMP || HOTPLUG_CPU)
372
373menu "Power management and ACPI options"
374
375source "kernel/power/Kconfig"
376
377source "drivers/acpi/Kconfig"
378
379if PM
380menu "CPU Frequency scaling"
381source "drivers/cpufreq/Kconfig"
382endmenu
383endif
384
385endmenu
386
387config MSPEC
388	tristate "Memory special operations driver"
389	depends on IA64
390	select IA64_UNCACHED_ALLOCATOR
391	help
392	  If you have an ia64 and you want to enable memory special
393	  operations support (formerly known as fetchop), say Y here,
394	  otherwise say N.
395