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_HAS_CPU_FINALIZE_INIT
12 select ARCH_MIGHT_HAVE_PC_PARPORT
13 select ARCH_MIGHT_HAVE_PC_SERIO
14 select PCI if (!IA64_HP_SIM)
15 select ACPI if (!IA64_HP_SIM)
16 select ARCH_SUPPORTS_ACPI if (!IA64_HP_SIM)
17 select ACPI_SYSTEM_POWER_STATES_SUPPORT if ACPI
18 select ARCH_MIGHT_HAVE_ACPI_PDC if ACPI
19 select HAVE_UNSTABLE_SCHED_CLOCK
20 select HAVE_EXIT_THREAD
24 select HAVE_KRETPROBES
25 select HAVE_FTRACE_MCOUNT_RECORD
26 select HAVE_DYNAMIC_FTRACE if (!ITANIUM)
27 select HAVE_FUNCTION_TRACER
29 select HAVE_ARCH_TRACEHOOK
31 select HAVE_MEMBLOCK_NODE_MAP
33 select HAVE_VIRT_CPU_ACCOUNTING
34 select ARCH_HAS_DMA_MARK_CLEAN
35 select ARCH_HAS_SG_CHAIN
37 select ARCH_DISCARD_MEMBLOCK
38 select GENERIC_IRQ_PROBE
39 select GENERIC_PENDING_IRQ if SMP
40 select GENERIC_IRQ_SHOW
41 select GENERIC_IRQ_LEGACY
42 select ARCH_HAVE_NMI_SAFE_CMPXCHG
44 select GENERIC_SMP_IDLE_THREAD
45 select ARCH_TASK_STRUCT_ON_STACK
46 select ARCH_TASK_STRUCT_ALLOCATOR
47 select ARCH_THREAD_STACK_ALLOCATOR
48 select ARCH_CLOCKSOURCE_DATA
49 select GENERIC_TIME_VSYSCALL
50 select SYSCTL_ARCH_UNALIGN_NO_WARN
51 select HAVE_MOD_ARCH_SPECIFIC
52 select MODULES_USE_ELF_RELA
53 select ARCH_USE_CMPXCHG_LOCKREF
54 select HAVE_ARCH_AUDITSYSCALL
55 select NEED_DMA_MAP_STATE
56 select NEED_SG_DMA_LENGTH
59 The Itanium Processor Family is Intel's 64-bit successor to
60 the 32-bit X86 line. The IA-64 Linux project has a home
61 page at <http://www.linuxia64.org/> and a mailing list at
62 <linux-ia64@vger.kernel.org>.
66 select ATA_NONSTANDARD if ATA
71 depends on !IA64_SGI_SN2
81 config STACKTRACE_SUPPORT
84 config GENERIC_LOCKBREAK
87 config RWSEM_XCHGADD_ALGORITHM
91 config HUGETLB_PAGE_SIZE_VARIABLE
93 depends on HUGETLB_PAGE
96 config GENERIC_CALIBRATE_DELAY
100 config HAVE_SETUP_PER_CPU_AREA
106 select DMI_SCAN_MACHINE_NON_EFI_FALLBACK
113 config SCHED_OMIT_FRAME_POINTER
117 config IA64_UNCACHED_ALLOCATOR
119 select GENERIC_ALLOCATOR
121 config ARCH_USES_PG_UNCACHED
123 depends on IA64_UNCACHED_ALLOCATOR
140 This selects the system type of your hardware. A "generic" kernel
141 will run on any supported IA-64 system. However, if you configure
142 a kernel for your specific system, it will be faster and smaller.
144 generic For any supported IA-64 system
145 DIG-compliant For DIG ("Developer's Interface Guide") compliant systems
146 DIG+Intel+IOMMU For DIG systems with Intel IOMMU
147 HP-zx1/sx1000 For HP systems
148 HP-zx1/sx1000+swiotlb For HP systems with (broken) DMA-constrained devices.
149 SGI-SN2 For SGI Altix systems
150 SGI-UV For SGI UV systems
151 Ski-simulator For the HP simulator <http://www.hpl.hp.com/research/linux/ski/>
153 If you don't know what to do, choose "generic".
160 bool "DIG+Intel+IOMMU"
167 Build a kernel that runs on HP zx1 and sx1000 systems. This adds
168 support for the HP I/O MMU.
170 config IA64_HP_ZX1_SWIOTLB
171 bool "HP-zx1/sx1000 with software I/O TLB"
174 Build a kernel that runs on HP zx1 and sx1000 systems even when they
175 have broken PCI devices which cannot DMA to full 32 bits. Apart
176 from support for the HP I/O MMU, this includes support for the software
177 I/O TLB, which allows supporting the broken devices at the expense of
178 wasting some kernel memory (about 2MB by default).
185 Selecting this option will optimize the kernel for use on sn2 based
186 systems, but the resulting kernel binary will not run on other
187 types of ia64 systems. If you have an SGI Altix system, it's safe
188 to select this option. If in doubt, select ia64 generic support
197 Selecting this option will optimize the kernel for use on UV based
198 systems, but the resulting kernel binary will not run on other
199 types of ia64 systems. If you have an SGI UV system, it's safe
200 to select this option. If in doubt, select ia64 generic support
211 prompt "Processor type"
217 Select your IA-64 processor type. The default is Itanium.
218 This choice is safe for all IA-64 systems, but may not perform
219 optimally on systems with, say, Itanium 2 or newer processors.
224 Select this to configure for an Itanium 2 (McKinley) processor.
229 prompt "Kernel page size"
230 default IA64_PAGE_SIZE_16KB
232 config IA64_PAGE_SIZE_4KB
235 This lets you select the page size of the kernel. For best IA-64
236 performance, a page size of 8KB or 16KB is recommended. For best
237 IA-32 compatibility, a page size of 4KB should be selected (the vast
238 majority of IA-32 binaries work perfectly fine with a larger page
239 size). For Itanium 2 or newer systems, a page size of 64KB can also
242 4KB For best IA-32 compatibility
243 8KB For best IA-64 performance
244 16KB For best IA-64 performance
245 64KB Requires Itanium 2 or newer processor.
247 If you don't know what to do, choose 16KB.
249 config IA64_PAGE_SIZE_8KB
252 config IA64_PAGE_SIZE_16KB
255 config IA64_PAGE_SIZE_64KB
267 source kernel/Kconfig.hz
275 # align cache-sensitive data to 128 bytes
276 config IA64_L1_CACHE_SHIFT
278 default "7" if MCKINLEY
279 default "6" if ITANIUM
282 bool "Cyclone (EXA) Time Source support"
284 Say Y here to enable support for IBM EXA Cyclone time source.
285 If you're unsure, answer N.
289 depends on !IA64_HP_SIM
292 config FORCE_MAX_ZONEORDER
293 int "MAX_ORDER (11 - 17)" if !HUGETLB_PAGE
294 range 11 17 if !HUGETLB_PAGE
295 default "17" if HUGETLB_PAGE
299 bool "Symmetric multi-processing support"
301 This enables support for systems with more than one CPU. If you have
302 a system with only one CPU, say N. If you have a system with more
305 If you say N here, the kernel will run on single and multiprocessor
306 systems, but will use only one CPU of a multiprocessor system. If
307 you say Y here, the kernel will run on many, but not all,
308 single processor systems. On a single processor system, the kernel
309 will run faster if you say N here.
311 See also the SMP-HOWTO available at
312 <http://www.tldp.org/docs.html#howto>.
314 If you don't know what to do here, say N.
317 int "Maximum number of CPUs (2-4096)"
322 You should set this to the number of CPUs in your system, but
323 keep in mind that a kernel compiled for, e.g., 2 CPUs will boot but
324 only use 2 CPUs on a >2 CPU system. Setting this to a value larger
325 than 64 will cause the use of a CPU mask array, causing a small
329 bool "Support for hot-pluggable CPUs"
333 Say Y here to experiment with turning CPUs off and on. CPUs
334 can be controlled through /sys/devices/system/cpu/cpu#.
335 Say N if you want to disable CPU hotplug.
337 config ARCH_ENABLE_MEMORY_HOTPLUG
340 config ARCH_ENABLE_MEMORY_HOTREMOVE
344 bool "SMT scheduler support"
347 Improves the CPU scheduler's decision making when dealing with
348 Intel IA64 chips with MultiThreading at a cost of slightly increased
349 overhead in some places. If unsure say N here.
351 config PERMIT_BSP_REMOVE
352 bool "Support removal of Bootstrap Processor"
353 depends on HOTPLUG_CPU
356 Say Y here if your platform SAL will support removal of BSP with HOTPLUG_CPU
359 config FORCE_CPEI_RETARGET
360 bool "Force assumption that CPEI can be re-targeted"
361 depends on PERMIT_BSP_REMOVE
364 Say Y if you need to force the assumption that CPEI can be re-targeted to
365 any cpu in the system. This hint is available via ACPI 3.0 specifications.
366 Tiger4 systems are capable of re-directing CPEI to any CPU other than BSP.
367 This option it useful to enable this feature on older BIOS's as well.
368 You can also enable this by using boot command line option force_cpei=1.
370 config ARCH_SELECT_MEMORY_MODEL
373 config ARCH_DISCONTIGMEM_ENABLE
376 Say Y to support efficient handling of discontiguous physical memory,
377 for architectures which are either NUMA (Non-Uniform Memory Access)
378 or have huge holes in the physical address space for other reasons.
379 See <file:Documentation/vm/numa.rst> for more.
381 config ARCH_FLATMEM_ENABLE
384 config ARCH_SPARSEMEM_ENABLE
386 depends on ARCH_DISCONTIGMEM_ENABLE
387 select SPARSEMEM_VMEMMAP_ENABLE
389 config ARCH_DISCONTIGMEM_DEFAULT
390 def_bool y if (IA64_SGI_SN2 || IA64_GENERIC || IA64_HP_ZX1 || IA64_HP_ZX1_SWIOTLB)
391 depends on ARCH_DISCONTIGMEM_ENABLE
395 depends on !IA64_HP_SIM && !FLATMEM
396 default y if IA64_SGI_SN2
397 select ACPI_NUMA if ACPI
399 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
400 Access). This option is for configuring high-end multiprocessor
401 server systems. If in doubt, say N.
404 int "Max num nodes shift(3-10)"
407 depends on NEED_MULTIPLE_NODES
409 This option specifies the maximum number of nodes in your SSI system.
410 MAX_NUMNODES will be 2^(This value).
411 If in doubt, use the default.
413 # VIRTUAL_MEM_MAP and FLAT_NODE_MEM_MAP are functionally equivalent.
414 # VIRTUAL_MEM_MAP has been retained for historical reasons.
415 config VIRTUAL_MEM_MAP
416 bool "Virtual mem map"
417 depends on !SPARSEMEM
418 default y if !IA64_HP_SIM
420 Say Y to compile the kernel with support for a virtual mem map.
421 This code also only takes effect if a memory hole of greater than
422 1 Gb is found during boot. You must turn this option on if you
423 require the DISCONTIGMEM option for your machine. If you are
428 default y if VIRTUAL_MEM_MAP
430 config HAVE_ARCH_EARLY_PFN_TO_NID
431 def_bool NUMA && SPARSEMEM
433 config HAVE_ARCH_NODEDATA_EXTENSION
437 config USE_PERCPU_NUMA_NODE_ID
441 config HAVE_MEMORYLESS_NODES
444 config ARCH_PROC_KCORE_TEXT
446 depends on PROC_KCORE
448 config IA64_MCA_RECOVERY
449 bool "MCA recovery from errors other than TLB."
452 bool "Performance monitor support"
455 Selects whether support for the IA-64 performance monitor hardware
456 is included in the kernel. This makes some kernel data-structures a
457 little bigger and slows down execution a bit, but it is generally
458 a good idea to turn this on. If you're unsure, say Y.
461 tristate "/proc/pal support"
463 If you say Y here, you are able to get PAL (Processor Abstraction
464 Layer) information in /proc/pal. This contains useful information
465 about the processors in your systems, such as cache and TLB sizes
466 and the PAL firmware version in use.
468 To use this option, you have to ensure that the "/proc file system
469 support" (CONFIG_PROC_FS) is enabled, too.
471 config IA64_MC_ERR_INJECT
472 tristate "MC error injection support"
474 Adds support for MC error injection. If enabled, the kernel
475 will provide a sysfs interface for user applications to
476 call MC error injection PAL procedures to inject various errors.
477 This is a useful tool for MCA testing.
479 If you're unsure, do not select this option.
482 def_bool y if (IA64_SGI_SN2 || IA64_GENERIC)
485 bool "ESI (Extensible SAL Interface) support"
487 If you say Y here, support is built into the kernel to
488 make ESI calls. ESI calls are used to support vendor-specific
489 firmware extensions, such as the ability to inject memory-errors
490 for test-purposes. If you're unsure, say N.
492 config IA64_HP_AML_NFW
493 bool "Support ACPI AML calls to native firmware"
495 This driver installs a global ACPI Operation Region handler for
496 region 0xA1. AML methods can use this OpRegion to call arbitrary
497 native firmware functions. The driver installs the OpRegion
498 handler if there is an HPQ5001 device or if the user supplies
499 the "force" module parameter, e.g., with the "aml_nfw.force"
500 kernel command line option.
502 source "drivers/sn/Kconfig"
505 bool "kexec system call"
506 depends on !IA64_HP_SIM && (!SMP || HOTPLUG_CPU)
509 kexec is a system call that implements the ability to shutdown your
510 current kernel, and to start another kernel. It is like a reboot
511 but it is independent of the system firmware. And like a reboot
512 you can start any kernel with it, not just Linux.
514 The name comes from the similarity to the exec system call.
516 It is an ongoing process to be certain the hardware in a machine
517 is properly shutdown, so do not be surprised if this code does not
518 initially work for you. As of this writing the exact hardware
519 interface is strongly in flux, so no good recommendation can be
523 bool "kernel crash dumps"
524 depends on IA64_MCA_RECOVERY && !IA64_HP_SIM && (!SMP || HOTPLUG_CPU)
526 Generate crash dump after being started by kexec.
528 source "drivers/firmware/Kconfig"
532 menu "Power management and ACPI options"
534 source "kernel/power/Kconfig"
536 source "drivers/acpi/Kconfig"
539 menu "CPU Frequency scaling"
540 source "drivers/cpufreq/Kconfig"
548 menu "Bus options (PCI, PCMCIA)"
553 Real IA-64 machines all have PCI/PCI-X/PCI Express busses. Say Y
554 here unless you are using a simulator without PCI support.
562 source "drivers/pci/Kconfig"
564 source "drivers/pcmcia/Kconfig"
570 source "arch/ia64/hp/sim/Kconfig"
573 tristate "Memory special operations driver"
575 select IA64_UNCACHED_ALLOCATOR
577 If you have an ia64 and you want to enable memory special
578 operations support (formerly known as fetchop), say Y here,