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_MIGHT_HAVE_PC_PARPORT
12 select ARCH_MIGHT_HAVE_PC_SERIO
14 select ARCH_SUPPORTS_ACPI
15 select ACPI_SYSTEM_POWER_STATES_SUPPORT if ACPI
16 select ARCH_MIGHT_HAVE_ACPI_PDC if ACPI
18 select PCI_DOMAINS if PCI
19 select PCI_SYSCALL if PCI
20 select HAVE_UNSTABLE_SCHED_CLOCK
21 select HAVE_EXIT_THREAD
25 select HAVE_KRETPROBES
26 select HAVE_FTRACE_MCOUNT_RECORD
27 select HAVE_DYNAMIC_FTRACE if (!ITANIUM)
28 select HAVE_FUNCTION_TRACER
30 select HAVE_ARCH_TRACEHOOK
31 select HAVE_MEMBLOCK_NODE_MAP
32 select HAVE_VIRT_CPU_ACCOUNTING
33 select ARCH_HAS_DMA_COHERENT_TO_PFN if SWIOTLB
34 select ARCH_HAS_SYNC_DMA_FOR_CPU if SWIOTLB
36 select GENERIC_IRQ_PROBE
37 select GENERIC_PENDING_IRQ if SMP
38 select GENERIC_IRQ_SHOW
39 select GENERIC_IRQ_LEGACY
40 select ARCH_HAVE_NMI_SAFE_CMPXCHG
42 select GENERIC_SMP_IDLE_THREAD
43 select ARCH_TASK_STRUCT_ON_STACK
44 select ARCH_TASK_STRUCT_ALLOCATOR
45 select ARCH_THREAD_STACK_ALLOCATOR
46 select ARCH_CLOCKSOURCE_DATA
47 select GENERIC_TIME_VSYSCALL
48 select SYSCTL_ARCH_UNALIGN_NO_WARN
49 select HAVE_MOD_ARCH_SPECIFIC
50 select MODULES_USE_ELF_RELA
51 select ARCH_USE_CMPXCHG_LOCKREF
52 select HAVE_ARCH_AUDITSYSCALL
53 select NEED_DMA_MAP_STATE
54 select NEED_SG_DMA_LENGTH
57 The Itanium Processor Family is Intel's 64-bit successor to
58 the 32-bit X86 line. The IA-64 Linux project has a home
59 page at <http://www.linuxia64.org/> and a mailing list at
60 <linux-ia64@vger.kernel.org>.
64 select ATA_NONSTANDARD if ATA
78 config STACKTRACE_SUPPORT
81 config GENERIC_LOCKBREAK
84 config HUGETLB_PAGE_SIZE_VARIABLE
86 depends on HUGETLB_PAGE
89 config GENERIC_CALIBRATE_DELAY
93 config HAVE_SETUP_PER_CPU_AREA
99 select DMI_SCAN_MACHINE_NON_EFI_FALLBACK
106 config SCHED_OMIT_FRAME_POINTER
110 config IA64_UNCACHED_ALLOCATOR
112 select GENERIC_ALLOCATOR
114 config ARCH_USES_PG_UNCACHED
116 depends on IA64_UNCACHED_ALLOCATOR
133 This selects the system type of your hardware. A "generic" kernel
134 will run on any supported IA-64 system. However, if you configure
135 a kernel for your specific system, it will be faster and smaller.
137 generic For any supported IA-64 system
138 DIG-compliant For DIG ("Developer's Interface Guide") compliant systems
139 DIG+Intel+IOMMU For DIG systems with Intel IOMMU
140 HP-zx1/sx1000 For HP systems
141 HP-zx1/sx1000+swiotlb For HP systems with (broken) DMA-constrained devices.
142 SGI-UV For SGI UV systems
144 If you don't know what to do, choose "generic".
151 bool "DIG+Intel+IOMMU"
158 Build a kernel that runs on HP zx1 and sx1000 systems. This adds
159 support for the HP I/O MMU.
161 config IA64_HP_ZX1_SWIOTLB
162 bool "HP-zx1/sx1000 with software I/O TLB"
165 Build a kernel that runs on HP zx1 and sx1000 systems even when they
166 have broken PCI devices which cannot DMA to full 32 bits. Apart
167 from support for the HP I/O MMU, this includes support for the software
168 I/O TLB, which allows supporting the broken devices at the expense of
169 wasting some kernel memory (about 2MB by default).
177 Selecting this option will optimize the kernel for use on UV based
178 systems, but the resulting kernel binary will not run on other
179 types of ia64 systems. If you have an SGI UV system, it's safe
180 to select this option. If in doubt, select ia64 generic support
186 prompt "Processor type"
192 Select your IA-64 processor type. The default is Itanium.
193 This choice is safe for all IA-64 systems, but may not perform
194 optimally on systems with, say, Itanium 2 or newer processors.
199 Select this to configure for an Itanium 2 (McKinley) processor.
204 prompt "Kernel page size"
205 default IA64_PAGE_SIZE_16KB
207 config IA64_PAGE_SIZE_4KB
210 This lets you select the page size of the kernel. For best IA-64
211 performance, a page size of 8KB or 16KB is recommended. For best
212 IA-32 compatibility, a page size of 4KB should be selected (the vast
213 majority of IA-32 binaries work perfectly fine with a larger page
214 size). For Itanium 2 or newer systems, a page size of 64KB can also
217 4KB For best IA-32 compatibility
218 8KB For best IA-64 performance
219 16KB For best IA-64 performance
220 64KB Requires Itanium 2 or newer processor.
222 If you don't know what to do, choose 16KB.
224 config IA64_PAGE_SIZE_8KB
227 config IA64_PAGE_SIZE_16KB
230 config IA64_PAGE_SIZE_64KB
236 source "kernel/Kconfig.hz"
243 # align cache-sensitive data to 128 bytes
244 config IA64_L1_CACHE_SHIFT
246 default "7" if MCKINLEY
247 default "6" if ITANIUM
250 bool "Cyclone (EXA) Time Source support"
252 Say Y here to enable support for IBM EXA Cyclone time source.
253 If you're unsure, answer N.
255 config FORCE_MAX_ZONEORDER
256 int "MAX_ORDER (11 - 17)" if !HUGETLB_PAGE
257 range 11 17 if !HUGETLB_PAGE
258 default "17" if HUGETLB_PAGE
262 bool "Symmetric multi-processing support"
264 This enables support for systems with more than one CPU. If you have
265 a system with only one CPU, say N. If you have a system with more
268 If you say N here, the kernel will run on single and multiprocessor
269 systems, but will use only one CPU of a multiprocessor system. If
270 you say Y here, the kernel will run on many, but not all,
271 single processor systems. On a single processor system, the kernel
272 will run faster if you say N here.
274 See also the SMP-HOWTO available at
275 <http://www.tldp.org/docs.html#howto>.
277 If you don't know what to do here, say N.
280 int "Maximum number of CPUs (2-4096)"
285 You should set this to the number of CPUs in your system, but
286 keep in mind that a kernel compiled for, e.g., 2 CPUs will boot but
287 only use 2 CPUs on a >2 CPU system. Setting this to a value larger
288 than 64 will cause the use of a CPU mask array, causing a small
292 bool "Support for hot-pluggable CPUs"
296 Say Y here to experiment with turning CPUs off and on. CPUs
297 can be controlled through /sys/devices/system/cpu/cpu#.
298 Say N if you want to disable CPU hotplug.
300 config ARCH_ENABLE_MEMORY_HOTPLUG
303 config ARCH_ENABLE_MEMORY_HOTREMOVE
307 bool "SMT scheduler support"
310 Improves the CPU scheduler's decision making when dealing with
311 Intel IA64 chips with MultiThreading at a cost of slightly increased
312 overhead in some places. If unsure say N here.
314 config PERMIT_BSP_REMOVE
315 bool "Support removal of Bootstrap Processor"
316 depends on HOTPLUG_CPU
319 Say Y here if your platform SAL will support removal of BSP with HOTPLUG_CPU
322 config FORCE_CPEI_RETARGET
323 bool "Force assumption that CPEI can be re-targeted"
324 depends on PERMIT_BSP_REMOVE
327 Say Y if you need to force the assumption that CPEI can be re-targeted to
328 any cpu in the system. This hint is available via ACPI 3.0 specifications.
329 Tiger4 systems are capable of re-directing CPEI to any CPU other than BSP.
330 This option it useful to enable this feature on older BIOS's as well.
331 You can also enable this by using boot command line option force_cpei=1.
333 config ARCH_SELECT_MEMORY_MODEL
336 config ARCH_DISCONTIGMEM_ENABLE
339 Say Y to support efficient handling of discontiguous physical memory,
340 for architectures which are either NUMA (Non-Uniform Memory Access)
341 or have huge holes in the physical address space for other reasons.
342 See <file:Documentation/vm/numa.rst> for more.
344 config ARCH_FLATMEM_ENABLE
347 config ARCH_SPARSEMEM_ENABLE
349 depends on ARCH_DISCONTIGMEM_ENABLE
350 select SPARSEMEM_VMEMMAP_ENABLE
352 config ARCH_DISCONTIGMEM_DEFAULT
353 def_bool y if (IA64_GENERIC || IA64_HP_ZX1 || IA64_HP_ZX1_SWIOTLB)
354 depends on ARCH_DISCONTIGMEM_ENABLE
359 select ACPI_NUMA if ACPI
361 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
362 Access). This option is for configuring high-end multiprocessor
363 server systems. If in doubt, say N.
366 int "Max num nodes shift(3-10)"
369 depends on NEED_MULTIPLE_NODES
371 This option specifies the maximum number of nodes in your SSI system.
372 MAX_NUMNODES will be 2^(This value).
373 If in doubt, use the default.
375 # VIRTUAL_MEM_MAP and FLAT_NODE_MEM_MAP are functionally equivalent.
376 # VIRTUAL_MEM_MAP has been retained for historical reasons.
377 config VIRTUAL_MEM_MAP
378 bool "Virtual mem map"
379 depends on !SPARSEMEM
382 Say Y to compile the kernel with support for a virtual mem map.
383 This code also only takes effect if a memory hole of greater than
384 1 Gb is found during boot. You must turn this option on if you
385 require the DISCONTIGMEM option for your machine. If you are
390 default y if VIRTUAL_MEM_MAP
392 config HAVE_ARCH_EARLY_PFN_TO_NID
393 def_bool NUMA && SPARSEMEM
395 config HAVE_ARCH_NODEDATA_EXTENSION
399 config USE_PERCPU_NUMA_NODE_ID
403 config HAVE_MEMORYLESS_NODES
406 config ARCH_PROC_KCORE_TEXT
408 depends on PROC_KCORE
410 config IA64_MCA_RECOVERY
411 tristate "MCA recovery from errors other than TLB."
414 bool "Performance monitor support"
417 Selects whether support for the IA-64 performance monitor hardware
418 is included in the kernel. This makes some kernel data-structures a
419 little bigger and slows down execution a bit, but it is generally
420 a good idea to turn this on. If you're unsure, say Y.
423 tristate "/proc/pal support"
425 If you say Y here, you are able to get PAL (Processor Abstraction
426 Layer) information in /proc/pal. This contains useful information
427 about the processors in your systems, such as cache and TLB sizes
428 and the PAL firmware version in use.
430 To use this option, you have to ensure that the "/proc file system
431 support" (CONFIG_PROC_FS) is enabled, too.
433 config IA64_MC_ERR_INJECT
434 tristate "MC error injection support"
436 Adds support for MC error injection. If enabled, the kernel
437 will provide a sysfs interface for user applications to
438 call MC error injection PAL procedures to inject various errors.
439 This is a useful tool for MCA testing.
441 If you're unsure, do not select this option.
444 bool "ESI (Extensible SAL Interface) support"
446 If you say Y here, support is built into the kernel to
447 make ESI calls. ESI calls are used to support vendor-specific
448 firmware extensions, such as the ability to inject memory-errors
449 for test-purposes. If you're unsure, say N.
451 config IA64_HP_AML_NFW
452 bool "Support ACPI AML calls to native firmware"
454 This driver installs a global ACPI Operation Region handler for
455 region 0xA1. AML methods can use this OpRegion to call arbitrary
456 native firmware functions. The driver installs the OpRegion
457 handler if there is an HPQ5001 device or if the user supplies
458 the "force" module parameter, e.g., with the "aml_nfw.force"
459 kernel command line option.
462 bool "kexec system call"
463 depends on !SMP || HOTPLUG_CPU
466 kexec is a system call that implements the ability to shutdown your
467 current kernel, and to start another kernel. It is like a reboot
468 but it is independent of the system firmware. And like a reboot
469 you can start any kernel with it, not just Linux.
471 The name comes from the similarity to the exec system call.
473 It is an ongoing process to be certain the hardware in a machine
474 is properly shutdown, so do not be surprised if this code does not
475 initially work for you. As of this writing the exact hardware
476 interface is strongly in flux, so no good recommendation can be
480 bool "kernel crash dumps"
481 depends on IA64_MCA_RECOVERY && (!SMP || HOTPLUG_CPU)
483 Generate crash dump after being started by kexec.
485 source "drivers/firmware/Kconfig"
489 menu "Power management and ACPI options"
491 source "kernel/power/Kconfig"
493 source "drivers/acpi/Kconfig"
496 menu "CPU Frequency scaling"
497 source "drivers/cpufreq/Kconfig"
504 tristate "Memory special operations driver"
506 select IA64_UNCACHED_ALLOCATOR
508 If you have an ia64 and you want to enable memory special
509 operations support (formerly known as fetchop), say Y here,