1 # SPDX-License-Identifier: GPL-2.0
3 int "Page Table Levels" if !IA64_PAGE_SIZE_64KB
4 range 3 4 if !IA64_PAGE_SIZE_64KB
7 menu "Processor type and features"
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
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
25 select PCI_DOMAINS if PCI
27 select PCI_SYSCALL if PCI
28 select HAVE_ASM_MODVERSIONS
29 select HAVE_UNSTABLE_SCHED_CLOCK
30 select HAVE_EXIT_THREAD
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
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
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
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
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>.
75 select ATA_NONSTANDARD if ATA
82 config STACKTRACE_SUPPORT
85 config GENERIC_LOCKBREAK
88 config GENERIC_CALIBRATE_DELAY
95 select DMI_SCAN_MACHINE_NON_EFI_FALLBACK
102 config SCHED_OMIT_FRAME_POINTER
106 config IA64_UNCACHED_ALLOCATOR
108 select GENERIC_ALLOCATOR
110 config ARCH_USES_PG_UNCACHED
112 depends on IA64_UNCACHED_ALLOCATOR
119 prompt "Processor type"
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.
132 Select this to configure for an Itanium 2 (McKinley) processor.
137 prompt "Kernel page size"
138 default IA64_PAGE_SIZE_16KB
140 config IA64_PAGE_SIZE_4KB
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
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.
155 If you don't know what to do, choose 16KB.
157 config IA64_PAGE_SIZE_8KB
160 config IA64_PAGE_SIZE_16KB
163 config IA64_PAGE_SIZE_64KB
169 source "kernel/Kconfig.hz"
176 # align cache-sensitive data to 128 bytes
177 config IA64_L1_CACHE_SHIFT
179 default "7" if MCKINLEY
180 default "6" if ITANIUM
183 bool "SGI-UV support"
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.
189 config IA64_HP_SBA_IOMMU
190 bool "HP SBA IOMMU support"
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.
198 bool "Cyclone (EXA) Time Source support"
200 Say Y here to enable support for IBM EXA Cyclone time source.
201 If you're unsure, answer N.
203 config ARCH_FORCE_MAX_ORDER
204 int "MAX_ORDER (11 - 17)" if !HUGETLB_PAGE
205 range 11 17 if !HUGETLB_PAGE
206 default "17" if HUGETLB_PAGE
210 bool "Symmetric multi-processing support"
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
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.
222 See also the SMP-HOWTO available at
223 <http://www.tldp.org/docs.html#howto>.
225 If you don't know what to do here, say N.
228 int "Maximum number of CPUs (2-4096)"
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
240 bool "Support for hot-pluggable CPUs"
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.
249 bool "SMT scheduler support"
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.
256 config PERMIT_BSP_REMOVE
257 bool "Support removal of Bootstrap Processor"
258 depends on HOTPLUG_CPU
261 Say Y here if your platform SAL will support removal of BSP with HOTPLUG_CPU
264 config FORCE_CPEI_RETARGET
265 bool "Force assumption that CPEI can be re-targeted"
266 depends on PERMIT_BSP_REMOVE
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.
275 config ARCH_SELECT_MEMORY_MODEL
278 config ARCH_FLATMEM_ENABLE
281 config ARCH_SPARSEMEM_ENABLE
283 select SPARSEMEM_VMEMMAP_ENABLE
285 config ARCH_SPARSEMEM_DEFAULT
287 depends on ARCH_SPARSEMEM_ENABLE
293 select USE_PERCPU_NUMA_NODE_ID
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.
300 int "Max num nodes shift(3-10)"
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.
309 config HAVE_ARCH_NODEDATA_EXTENSION
313 config HAVE_MEMORYLESS_NODES
316 config ARCH_PROC_KCORE_TEXT
318 depends on PROC_KCORE
320 config IA64_MCA_RECOVERY
321 bool "MCA recovery from errors other than TLB."
324 tristate "/proc/pal support"
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.
331 To use this option, you have to ensure that the "/proc file system
332 support" (CONFIG_PROC_FS) is enabled, too.
334 config IA64_MC_ERR_INJECT
335 tristate "MC error injection support"
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.
342 If you're unsure, do not select this option.
345 bool "ESI (Extensible SAL Interface) support"
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.
352 config IA64_HP_AML_NFW
353 bool "Support ACPI AML calls to native firmware"
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.
363 bool "kexec system call"
364 depends on !SMP || HOTPLUG_CPU
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.
372 The name comes from the similarity to the exec system call.
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
381 bool "kernel crash dumps"
382 depends on IA64_MCA_RECOVERY && (!SMP || HOTPLUG_CPU)
384 Generate crash dump after being started by kexec.
388 menu "Power management and ACPI options"
390 source "kernel/power/Kconfig"
392 source "drivers/acpi/Kconfig"
395 menu "CPU Frequency scaling"
396 source "drivers/cpufreq/Kconfig"
403 tristate "Memory special operations driver"
405 select IA64_UNCACHED_ALLOCATOR
407 If you have an ia64 and you want to enable memory special
408 operations support (formerly known as fetchop), say Y here,