xref: /openbmc/linux/arch/ia64/Kconfig (revision 6b342707)
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_DMA_MARK_CLEAN
12	select ARCH_HAS_STRNCPY_FROM_USER
13	select ARCH_HAS_STRNLEN_USER
14	select ARCH_MIGHT_HAVE_PC_PARPORT
15	select ARCH_MIGHT_HAVE_PC_SERIO
16	select ACPI
17	select ACPI_NUMA if NUMA
18	select ARCH_ENABLE_MEMORY_HOTPLUG
19	select ARCH_ENABLE_MEMORY_HOTREMOVE
20	select ARCH_SUPPORTS_ACPI
21	select ACPI_SYSTEM_POWER_STATES_SUPPORT if ACPI
22	select ARCH_MIGHT_HAVE_ACPI_PDC if ACPI
23	select FORCE_PCI
24	select PCI_DOMAINS if PCI
25	select PCI_MSI
26	select PCI_SYSCALL if PCI
27	select HAVE_ASM_MODVERSIONS
28	select HAVE_UNSTABLE_SCHED_CLOCK
29	select HAVE_EXIT_THREAD
30	select HAVE_KPROBES
31	select HAVE_KRETPROBES
32	select HAVE_FTRACE_MCOUNT_RECORD
33	select HAVE_DYNAMIC_FTRACE if (!ITANIUM)
34	select HAVE_FUNCTION_TRACER
35	select HAVE_SETUP_PER_CPU_AREA
36	select TTY
37	select HAVE_ARCH_TRACEHOOK
38	select HAVE_VIRT_CPU_ACCOUNTING
39	select HUGETLB_PAGE_SIZE_VARIABLE if HUGETLB_PAGE
40	select VIRT_TO_BUS
41	select GENERIC_IRQ_PROBE
42	select GENERIC_PENDING_IRQ if SMP
43	select GENERIC_IRQ_SHOW
44	select GENERIC_IRQ_LEGACY
45	select ARCH_HAVE_NMI_SAFE_CMPXCHG
46	select GENERIC_IOMAP
47	select GENERIC_SMP_IDLE_THREAD
48	select ARCH_TASK_STRUCT_ON_STACK
49	select ARCH_TASK_STRUCT_ALLOCATOR
50	select ARCH_THREAD_STACK_ALLOCATOR
51	select ARCH_CLOCKSOURCE_DATA
52	select GENERIC_TIME_VSYSCALL
53	select LEGACY_TIMER_TICK
54	select SWIOTLB
55	select SYSCTL_ARCH_UNALIGN_NO_WARN
56	select HAVE_MOD_ARCH_SPECIFIC
57	select MODULES_USE_ELF_RELA
58	select ARCH_USE_CMPXCHG_LOCKREF
59	select HAVE_ARCH_AUDITSYSCALL
60	select NEED_DMA_MAP_STATE
61	select NEED_SG_DMA_LENGTH
62	select NUMA if !FLATMEM
63	select PCI_MSI_ARCH_FALLBACKS if PCI_MSI
64	select SET_FS
65	select ZONE_DMA32
66	default y
67	help
68	  The Itanium Processor Family is Intel's 64-bit successor to
69	  the 32-bit X86 line.  The IA-64 Linux project has a home
70	  page at <http://www.linuxia64.org/> and a mailing list at
71	  <linux-ia64@vger.kernel.org>.
72
73config 64BIT
74	bool
75	select ATA_NONSTANDARD if ATA
76	default y
77
78config MMU
79	bool
80	default y
81
82config STACKTRACE_SUPPORT
83	def_bool y
84
85config GENERIC_LOCKBREAK
86	def_bool n
87
88config GENERIC_CALIBRATE_DELAY
89	bool
90	default y
91
92config DMI
93	bool
94	default y
95	select DMI_SCAN_MACHINE_NON_EFI_FALLBACK
96
97config EFI
98	bool
99	select UCS2_STRING
100	default y
101
102config SCHED_OMIT_FRAME_POINTER
103	bool
104	default y
105
106config IA64_UNCACHED_ALLOCATOR
107	bool
108	select GENERIC_ALLOCATOR
109
110config ARCH_USES_PG_UNCACHED
111	def_bool y
112	depends on IA64_UNCACHED_ALLOCATOR
113
114config AUDIT_ARCH
115	bool
116	default y
117
118choice
119	prompt "Processor type"
120	default ITANIUM
121
122config ITANIUM
123	bool "Itanium"
124	help
125	  Select your IA-64 processor type.  The default is Itanium.
126	  This choice is safe for all IA-64 systems, but may not perform
127	  optimally on systems with, say, Itanium 2 or newer processors.
128
129config MCKINLEY
130	bool "Itanium 2"
131	help
132	  Select this to configure for an Itanium 2 (McKinley) processor.
133
134endchoice
135
136choice
137	prompt "Kernel page size"
138	default IA64_PAGE_SIZE_16KB
139
140config IA64_PAGE_SIZE_4KB
141	bool "4KB"
142	help
143	  This lets you select the page size of the kernel.  For best IA-64
144	  performance, a page size of 8KB or 16KB is recommended.  For best
145	  IA-32 compatibility, a page size of 4KB should be selected (the vast
146	  majority of IA-32 binaries work perfectly fine with a larger page
147	  size).  For Itanium 2 or newer systems, a page size of 64KB can also
148	  be selected.
149
150	  4KB                For best IA-32 compatibility
151	  8KB                For best IA-64 performance
152	  16KB               For best IA-64 performance
153	  64KB               Requires Itanium 2 or newer processor.
154
155	  If you don't know what to do, choose 16KB.
156
157config IA64_PAGE_SIZE_8KB
158	bool "8KB"
159
160config IA64_PAGE_SIZE_16KB
161	bool "16KB"
162
163config IA64_PAGE_SIZE_64KB
164	depends on !ITANIUM
165	bool "64KB"
166
167endchoice
168
169source "kernel/Kconfig.hz"
170
171config IA64_BRL_EMU
172	bool
173	depends on ITANIUM
174	default y
175
176# align cache-sensitive data to 128 bytes
177config IA64_L1_CACHE_SHIFT
178	int
179	default "7" if MCKINLEY
180	default "6" if ITANIUM
181
182config IA64_SGI_UV
183	bool "SGI-UV support"
184	help
185	  Selecting this option will add specific support for running on SGI
186	  UV based systems.  If you have an SGI UV system or are building a
187	  distro kernel, select this option.
188
189config IA64_HP_SBA_IOMMU
190	bool "HP SBA IOMMU support"
191	select DMA_OPS
192	default y
193	help
194	  Say Y here to add support for the SBA IOMMU found on HP zx1 and
195	  sx1000 systems.  If you're unsure, answer Y.
196
197config IA64_CYCLONE
198	bool "Cyclone (EXA) Time Source support"
199	help
200	  Say Y here to enable support for IBM EXA Cyclone time source.
201	  If you're unsure, answer N.
202
203config FORCE_MAX_ZONEORDER
204	int "MAX_ORDER (11 - 17)"  if !HUGETLB_PAGE
205	range 11 17  if !HUGETLB_PAGE
206	default "17" if HUGETLB_PAGE
207	default "11"
208
209config SMP
210	bool "Symmetric multi-processing support"
211	help
212	  This enables support for systems with more than one CPU. If you have
213	  a system with only one CPU, say N.  If you have a system with more
214	  than one CPU, say Y.
215
216	  If you say N here, the kernel will run on single and multiprocessor
217	  systems, but will use only one CPU of a multiprocessor system.  If
218	  you say Y here, the kernel will run on many, but not all,
219	  single processor systems.  On a single processor system, the kernel
220	  will run faster if you say N here.
221
222	  See also the SMP-HOWTO available at
223	  <http://www.tldp.org/docs.html#howto>.
224
225	  If you don't know what to do here, say N.
226
227config NR_CPUS
228	int "Maximum number of CPUs (2-4096)"
229	range 2 4096
230	depends on SMP
231	default "4096"
232	help
233	  You should set this to the number of CPUs in your system, but
234	  keep in mind that a kernel compiled for, e.g., 2 CPUs will boot but
235	  only use 2 CPUs on a >2 CPU system.  Setting this to a value larger
236	  than 64 will cause the use of a CPU mask array, causing a small
237	  performance hit.
238
239config HOTPLUG_CPU
240	bool "Support for hot-pluggable CPUs"
241	depends on SMP
242	default n
243	help
244	  Say Y here to experiment with turning CPUs off and on.  CPUs
245	  can be controlled through /sys/devices/system/cpu/cpu#.
246	  Say N if you want to disable CPU hotplug.
247
248config SCHED_SMT
249	bool "SMT scheduler support"
250	depends on SMP
251	help
252	  Improves the CPU scheduler's decision making when dealing with
253	  Intel IA64 chips with MultiThreading at a cost of slightly increased
254	  overhead in some places. If unsure say N here.
255
256config PERMIT_BSP_REMOVE
257	bool "Support removal of Bootstrap Processor"
258	depends on HOTPLUG_CPU
259	default n
260	help
261	Say Y here if your platform SAL will support removal of BSP with HOTPLUG_CPU
262	support.
263
264config FORCE_CPEI_RETARGET
265	bool "Force assumption that CPEI can be re-targeted"
266	depends on PERMIT_BSP_REMOVE
267	default n
268	help
269	Say Y if you need to force the assumption that CPEI can be re-targeted to
270	any cpu in the system. This hint is available via ACPI 3.0 specifications.
271	Tiger4 systems are capable of re-directing CPEI to any CPU other than BSP.
272	This option it useful to enable this feature on older BIOS's as well.
273	You can also enable this by using boot command line option force_cpei=1.
274
275config ARCH_SELECT_MEMORY_MODEL
276	def_bool y
277
278config ARCH_FLATMEM_ENABLE
279	def_bool y
280
281config ARCH_SPARSEMEM_ENABLE
282	def_bool y
283	select SPARSEMEM_VMEMMAP_ENABLE
284
285config ARCH_SPARSEMEM_DEFAULT
286	def_bool y
287	depends on ARCH_SPARSEMEM_ENABLE
288
289config NUMA
290	bool "NUMA support"
291	depends on !FLATMEM
292	select SMP
293	select USE_PERCPU_NUMA_NODE_ID
294	help
295	  Say Y to compile the kernel to support NUMA (Non-Uniform Memory
296	  Access).  This option is for configuring high-end multiprocessor
297	  server systems.  If in doubt, say N.
298
299config NODES_SHIFT
300	int "Max num nodes shift(3-10)"
301	range 3 10
302	default "10"
303	depends on NUMA
304	help
305	  This option specifies the maximum number of nodes in your SSI system.
306	  MAX_NUMNODES will be 2^(This value).
307	  If in doubt, use the default.
308
309config HAVE_ARCH_NODEDATA_EXTENSION
310	def_bool y
311	depends on NUMA
312
313config HAVE_MEMORYLESS_NODES
314	def_bool NUMA
315
316config ARCH_PROC_KCORE_TEXT
317	def_bool y
318	depends on PROC_KCORE
319
320config IA64_MCA_RECOVERY
321	bool "MCA recovery from errors other than TLB."
322
323config IA64_PALINFO
324	tristate "/proc/pal support"
325	help
326	  If you say Y here, you are able to get PAL (Processor Abstraction
327	  Layer) information in /proc/pal.  This contains useful information
328	  about the processors in your systems, such as cache and TLB sizes
329	  and the PAL firmware version in use.
330
331	  To use this option, you have to ensure that the "/proc file system
332	  support" (CONFIG_PROC_FS) is enabled, too.
333
334config IA64_MC_ERR_INJECT
335	tristate "MC error injection support"
336	help
337	  Adds support for MC error injection. If enabled, the kernel
338	  will provide a sysfs interface for user applications to
339	  call MC error injection PAL procedures to inject various errors.
340	  This is a useful tool for MCA testing.
341
342	  If you're unsure, do not select this option.
343
344config IA64_ESI
345	bool "ESI (Extensible SAL Interface) support"
346	help
347	  If you say Y here, support is built into the kernel to
348	  make ESI calls.  ESI calls are used to support vendor-specific
349	  firmware extensions, such as the ability to inject memory-errors
350	  for test-purposes.  If you're unsure, say N.
351
352config IA64_HP_AML_NFW
353	bool "Support ACPI AML calls to native firmware"
354	help
355	  This driver installs a global ACPI Operation Region handler for
356	  region 0xA1.  AML methods can use this OpRegion to call arbitrary
357	  native firmware functions.  The driver installs the OpRegion
358	  handler if there is an HPQ5001 device or if the user supplies
359	  the "force" module parameter, e.g., with the "aml_nfw.force"
360	  kernel command line option.
361
362config KEXEC
363	bool "kexec system call"
364	depends on !SMP || HOTPLUG_CPU
365	select KEXEC_CORE
366	help
367	  kexec is a system call that implements the ability to shutdown your
368	  current kernel, and to start another kernel.  It is like a reboot
369	  but it is independent of the system firmware.   And like a reboot
370	  you can start any kernel with it, not just Linux.
371
372	  The name comes from the similarity to the exec system call.
373
374	  It is an ongoing process to be certain the hardware in a machine
375	  is properly shutdown, so do not be surprised if this code does not
376	  initially work for you.  As of this writing the exact hardware
377	  interface is strongly in flux, so no good recommendation can be
378	  made.
379
380config CRASH_DUMP
381	  bool "kernel crash dumps"
382	  depends on IA64_MCA_RECOVERY && (!SMP || HOTPLUG_CPU)
383	  help
384	    Generate crash dump after being started by kexec.
385
386endmenu
387
388menu "Power management and ACPI options"
389
390source "kernel/power/Kconfig"
391
392source "drivers/acpi/Kconfig"
393
394if PM
395menu "CPU Frequency scaling"
396source "drivers/cpufreq/Kconfig"
397endmenu
398endif
399
400endmenu
401
402config MSPEC
403	tristate "Memory special operations driver"
404	depends on IA64
405	select IA64_UNCACHED_ALLOCATOR
406	help
407	  If you have an ia64 and you want to enable memory special
408	  operations support (formerly known as fetchop), say Y here,
409	  otherwise say N.
410