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_DMA_MARK_CLEAN
13	select ARCH_HAS_STRNCPY_FROM_USER
14	select ARCH_HAS_STRNLEN_USER
15	select ARCH_MIGHT_HAVE_PC_PARPORT
16	select ARCH_MIGHT_HAVE_PC_SERIO
17	select ACPI
18	select ACPI_NUMA if NUMA
19	select ARCH_ENABLE_MEMORY_HOTPLUG
20	select ARCH_ENABLE_MEMORY_HOTREMOVE
21	select ARCH_SUPPORTS_ACPI
22	select ACPI_SYSTEM_POWER_STATES_SUPPORT if ACPI
23	select ARCH_MIGHT_HAVE_ACPI_PDC if ACPI
24	select FORCE_PCI
25	select PCI_DOMAINS if PCI
26	select PCI_MSI
27	select PCI_SYSCALL if PCI
28	select HAVE_ASM_MODVERSIONS
29	select HAVE_UNSTABLE_SCHED_CLOCK
30	select HAVE_EXIT_THREAD
31	select HAVE_KPROBES
32	select HAVE_KRETPROBES
33	select HAVE_FTRACE_MCOUNT_RECORD
34	select HAVE_DYNAMIC_FTRACE if (!ITANIUM)
35	select HAVE_FUNCTION_TRACER
36	select HAVE_SETUP_PER_CPU_AREA
37	select TTY
38	select HAVE_ARCH_TRACEHOOK
39	select HAVE_FUNCTION_DESCRIPTORS
40	select HAVE_VIRT_CPU_ACCOUNTING
41	select HUGETLB_PAGE_SIZE_VARIABLE if HUGETLB_PAGE
42	select GENERIC_IRQ_PROBE
43	select GENERIC_PENDING_IRQ if SMP
44	select GENERIC_IRQ_SHOW
45	select GENERIC_IRQ_LEGACY
46	select ARCH_HAVE_NMI_SAFE_CMPXCHG
47	select GENERIC_IOMAP
48	select GENERIC_SMP_IDLE_THREAD
49	select ARCH_TASK_STRUCT_ON_STACK
50	select ARCH_TASK_STRUCT_ALLOCATOR
51	select ARCH_THREAD_STACK_ALLOCATOR
52	select ARCH_CLOCKSOURCE_DATA
53	select GENERIC_TIME_VSYSCALL
54	select LEGACY_TIMER_TICK
55	select SWIOTLB
56	select SYSCTL_ARCH_UNALIGN_NO_WARN
57	select HAVE_MOD_ARCH_SPECIFIC
58	select MODULES_USE_ELF_RELA
59	select ARCH_USE_CMPXCHG_LOCKREF
60	select HAVE_ARCH_AUDITSYSCALL
61	select NEED_DMA_MAP_STATE
62	select NEED_SG_DMA_LENGTH
63	select NUMA if !FLATMEM
64	select PCI_MSI_ARCH_FALLBACKS if PCI_MSI
65	select ZONE_DMA32
66	select FUNCTION_ALIGNMENT_32B
67	default y
68	help
69	  The Itanium Processor Family is Intel's 64-bit successor to
70	  the 32-bit X86 line.  The IA-64 Linux project has a home
71	  page at <http://www.linuxia64.org/> and a mailing list at
72	  <linux-ia64@vger.kernel.org>.
73
74config 64BIT
75	bool
76	select ATA_NONSTANDARD if ATA
77	default y
78
79config MMU
80	bool
81	default y
82
83config STACKTRACE_SUPPORT
84	def_bool y
85
86config GENERIC_LOCKBREAK
87	def_bool n
88
89config GENERIC_CALIBRATE_DELAY
90	bool
91	default y
92
93config DMI
94	bool
95	default y
96	select DMI_SCAN_MACHINE_NON_EFI_FALLBACK
97
98config EFI
99	bool
100	select UCS2_STRING
101	default y
102
103config SCHED_OMIT_FRAME_POINTER
104	bool
105	default y
106
107config IA64_UNCACHED_ALLOCATOR
108	bool
109	select GENERIC_ALLOCATOR
110
111config ARCH_USES_PG_UNCACHED
112	def_bool y
113	depends on IA64_UNCACHED_ALLOCATOR
114
115config AUDIT_ARCH
116	bool
117	default y
118
119choice
120	prompt "Processor type"
121	default ITANIUM
122
123config ITANIUM
124	bool "Itanium"
125	help
126	  Select your IA-64 processor type.  The default is Itanium.
127	  This choice is safe for all IA-64 systems, but may not perform
128	  optimally on systems with, say, Itanium 2 or newer processors.
129
130config MCKINLEY
131	bool "Itanium 2"
132	help
133	  Select this to configure for an Itanium 2 (McKinley) processor.
134
135endchoice
136
137choice
138	prompt "Kernel page size"
139	default IA64_PAGE_SIZE_16KB
140
141config IA64_PAGE_SIZE_4KB
142	bool "4KB"
143	help
144	  This lets you select the page size of the kernel.  For best IA-64
145	  performance, a page size of 8KB or 16KB is recommended.  For best
146	  IA-32 compatibility, a page size of 4KB should be selected (the vast
147	  majority of IA-32 binaries work perfectly fine with a larger page
148	  size).  For Itanium 2 or newer systems, a page size of 64KB can also
149	  be selected.
150
151	  4KB                For best IA-32 compatibility
152	  8KB                For best IA-64 performance
153	  16KB               For best IA-64 performance
154	  64KB               Requires Itanium 2 or newer processor.
155
156	  If you don't know what to do, choose 16KB.
157
158config IA64_PAGE_SIZE_8KB
159	bool "8KB"
160
161config IA64_PAGE_SIZE_16KB
162	bool "16KB"
163
164config IA64_PAGE_SIZE_64KB
165	depends on !ITANIUM
166	bool "64KB"
167
168endchoice
169
170source "kernel/Kconfig.hz"
171
172config IA64_BRL_EMU
173	bool
174	depends on ITANIUM
175	default y
176
177# align cache-sensitive data to 128 bytes
178config IA64_L1_CACHE_SHIFT
179	int
180	default "7" if MCKINLEY
181	default "6" if ITANIUM
182
183config IA64_SGI_UV
184	bool "SGI-UV support"
185	help
186	  Selecting this option will add specific support for running on SGI
187	  UV based systems.  If you have an SGI UV system or are building a
188	  distro kernel, select this option.
189
190config IA64_HP_SBA_IOMMU
191	bool "HP SBA IOMMU support"
192	select DMA_OPS
193	default y
194	help
195	  Say Y here to add support for the SBA IOMMU found on HP zx1 and
196	  sx1000 systems.  If you're unsure, answer Y.
197
198config IA64_CYCLONE
199	bool "Cyclone (EXA) Time Source support"
200	help
201	  Say Y here to enable support for IBM EXA Cyclone time source.
202	  If you're unsure, answer N.
203
204config ARCH_FORCE_MAX_ORDER
205	int "MAX_ORDER (11 - 17)"  if !HUGETLB_PAGE
206	range 11 17  if !HUGETLB_PAGE
207	default "17" if HUGETLB_PAGE
208	default "11"
209
210config SMP
211	bool "Symmetric multi-processing support"
212	help
213	  This enables support for systems with more than one CPU. If you have
214	  a system with only one CPU, say N.  If you have a system with more
215	  than one CPU, say Y.
216
217	  If you say N here, the kernel will run on single and multiprocessor
218	  systems, but will use only one CPU of a multiprocessor system.  If
219	  you say Y here, the kernel will run on many, but not all,
220	  single processor systems.  On a single processor system, the kernel
221	  will run faster if you say N here.
222
223	  See also the SMP-HOWTO available at
224	  <http://www.tldp.org/docs.html#howto>.
225
226	  If you don't know what to do here, say N.
227
228config NR_CPUS
229	int "Maximum number of CPUs (2-4096)"
230	range 2 4096
231	depends on SMP
232	default "4096"
233	help
234	  You should set this to the number of CPUs in your system, but
235	  keep in mind that a kernel compiled for, e.g., 2 CPUs will boot but
236	  only use 2 CPUs on a >2 CPU system.  Setting this to a value larger
237	  than 64 will cause the use of a CPU mask array, causing a small
238	  performance hit.
239
240config HOTPLUG_CPU
241	bool "Support for hot-pluggable CPUs"
242	depends on SMP
243	default n
244	help
245	  Say Y here to experiment with turning CPUs off and on.  CPUs
246	  can be controlled through /sys/devices/system/cpu/cpu#.
247	  Say N if you want to disable CPU hotplug.
248
249config SCHED_SMT
250	bool "SMT scheduler support"
251	depends on SMP
252	help
253	  Improves the CPU scheduler's decision making when dealing with
254	  Intel IA64 chips with MultiThreading at a cost of slightly increased
255	  overhead in some places. If unsure say N here.
256
257config PERMIT_BSP_REMOVE
258	bool "Support removal of Bootstrap Processor"
259	depends on HOTPLUG_CPU
260	default n
261	help
262	Say Y here if your platform SAL will support removal of BSP with HOTPLUG_CPU
263	support.
264
265config FORCE_CPEI_RETARGET
266	bool "Force assumption that CPEI can be re-targeted"
267	depends on PERMIT_BSP_REMOVE
268	default n
269	help
270	Say Y if you need to force the assumption that CPEI can be re-targeted to
271	any cpu in the system. This hint is available via ACPI 3.0 specifications.
272	Tiger4 systems are capable of re-directing CPEI to any CPU other than BSP.
273	This option it useful to enable this feature on older BIOS's as well.
274	You can also enable this by using boot command line option force_cpei=1.
275
276config ARCH_SELECT_MEMORY_MODEL
277	def_bool y
278
279config ARCH_FLATMEM_ENABLE
280	def_bool y
281
282config ARCH_SPARSEMEM_ENABLE
283	def_bool y
284	select SPARSEMEM_VMEMMAP_ENABLE
285
286config ARCH_SPARSEMEM_DEFAULT
287	def_bool y
288	depends on ARCH_SPARSEMEM_ENABLE
289
290config NUMA
291	bool "NUMA support"
292	depends on !FLATMEM
293	select SMP
294	select USE_PERCPU_NUMA_NODE_ID
295	help
296	  Say Y to compile the kernel to support NUMA (Non-Uniform Memory
297	  Access).  This option is for configuring high-end multiprocessor
298	  server systems.  If in doubt, say N.
299
300config NODES_SHIFT
301	int "Max num nodes shift(3-10)"
302	range 3 10
303	default "10"
304	depends on NUMA
305	help
306	  This option specifies the maximum number of nodes in your SSI system.
307	  MAX_NUMNODES will be 2^(This value).
308	  If in doubt, use the default.
309
310config HAVE_ARCH_NODEDATA_EXTENSION
311	def_bool y
312	depends on NUMA
313
314config HAVE_MEMORYLESS_NODES
315	def_bool NUMA
316
317config ARCH_PROC_KCORE_TEXT
318	def_bool y
319	depends on PROC_KCORE
320
321config IA64_MCA_RECOVERY
322	bool "MCA recovery from errors other than TLB."
323
324config IA64_PALINFO
325	tristate "/proc/pal support"
326	help
327	  If you say Y here, you are able to get PAL (Processor Abstraction
328	  Layer) information in /proc/pal.  This contains useful information
329	  about the processors in your systems, such as cache and TLB sizes
330	  and the PAL firmware version in use.
331
332	  To use this option, you have to ensure that the "/proc file system
333	  support" (CONFIG_PROC_FS) is enabled, too.
334
335config IA64_MC_ERR_INJECT
336	tristate "MC error injection support"
337	help
338	  Adds support for MC error injection. If enabled, the kernel
339	  will provide a sysfs interface for user applications to
340	  call MC error injection PAL procedures to inject various errors.
341	  This is a useful tool for MCA testing.
342
343	  If you're unsure, do not select this option.
344
345config IA64_ESI
346	bool "ESI (Extensible SAL Interface) support"
347	help
348	  If you say Y here, support is built into the kernel to
349	  make ESI calls.  ESI calls are used to support vendor-specific
350	  firmware extensions, such as the ability to inject memory-errors
351	  for test-purposes.  If you're unsure, say N.
352
353config IA64_HP_AML_NFW
354	bool "Support ACPI AML calls to native firmware"
355	help
356	  This driver installs a global ACPI Operation Region handler for
357	  region 0xA1.  AML methods can use this OpRegion to call arbitrary
358	  native firmware functions.  The driver installs the OpRegion
359	  handler if there is an HPQ5001 device or if the user supplies
360	  the "force" module parameter, e.g., with the "aml_nfw.force"
361	  kernel command line option.
362
363config KEXEC
364	bool "kexec system call"
365	depends on !SMP || HOTPLUG_CPU
366	select KEXEC_CORE
367	help
368	  kexec is a system call that implements the ability to shutdown your
369	  current kernel, and to start another kernel.  It is like a reboot
370	  but it is independent of the system firmware.   And like a reboot
371	  you can start any kernel with it, not just Linux.
372
373	  The name comes from the similarity to the exec system call.
374
375	  It is an ongoing process to be certain the hardware in a machine
376	  is properly shutdown, so do not be surprised if this code does not
377	  initially work for you.  As of this writing the exact hardware
378	  interface is strongly in flux, so no good recommendation can be
379	  made.
380
381config CRASH_DUMP
382	  bool "kernel crash dumps"
383	  depends on IA64_MCA_RECOVERY && (!SMP || HOTPLUG_CPU)
384	  help
385	    Generate crash dump after being started by kexec.
386
387endmenu
388
389menu "Power management and ACPI options"
390
391source "kernel/power/Kconfig"
392
393source "drivers/acpi/Kconfig"
394
395if PM
396menu "CPU Frequency scaling"
397source "drivers/cpufreq/Kconfig"
398endmenu
399endif
400
401endmenu
402
403config MSPEC
404	tristate "Memory special operations driver"
405	depends on IA64
406	select IA64_UNCACHED_ALLOCATOR
407	help
408	  If you have an ia64 and you want to enable memory special
409	  operations support (formerly known as fetchop), say Y here,
410	  otherwise say N.
411