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
13 select PCI if (!IA64_HP_SIM)
14 select ACPI if (!IA64_HP_SIM)
15 select ARCH_SUPPORTS_ACPI if (!IA64_HP_SIM)
16 select ACPI_SYSTEM_POWER_STATES_SUPPORT if ACPI
17 select ARCH_MIGHT_HAVE_ACPI_PDC if ACPI
18 select HAVE_UNSTABLE_SCHED_CLOCK
19 select HAVE_EXIT_THREAD
23 select HAVE_KRETPROBES
24 select HAVE_FTRACE_MCOUNT_RECORD
25 select HAVE_DYNAMIC_FTRACE if (!ITANIUM)
26 select HAVE_FUNCTION_TRACER
28 select HAVE_ARCH_TRACEHOOK
29 select HAVE_MEMBLOCK_NODE_MAP
30 select HAVE_VIRT_CPU_ACCOUNTING
31 select ARCH_HAS_DMA_MARK_CLEAN
32 select ARCH_HAS_SG_CHAIN
34 select ARCH_DISCARD_MEMBLOCK
35 select GENERIC_IRQ_PROBE
36 select GENERIC_PENDING_IRQ if SMP
37 select GENERIC_IRQ_SHOW
38 select GENERIC_IRQ_LEGACY
39 select ARCH_HAVE_NMI_SAFE_CMPXCHG
41 select GENERIC_SMP_IDLE_THREAD
42 select ARCH_TASK_STRUCT_ON_STACK
43 select ARCH_TASK_STRUCT_ALLOCATOR
44 select ARCH_THREAD_STACK_ALLOCATOR
45 select ARCH_CLOCKSOURCE_DATA
46 select GENERIC_TIME_VSYSCALL
47 select SYSCTL_ARCH_UNALIGN_NO_WARN
48 select HAVE_MOD_ARCH_SPECIFIC
49 select MODULES_USE_ELF_RELA
50 select ARCH_USE_CMPXCHG_LOCKREF
51 select HAVE_ARCH_AUDITSYSCALL
52 select NEED_DMA_MAP_STATE
53 select NEED_SG_DMA_LENGTH
56 The Itanium Processor Family is Intel's 64-bit successor to
57 the 32-bit X86 line. The IA-64 Linux project has a home
58 page at <http://www.linuxia64.org/> and a mailing list at
59 <linux-ia64@vger.kernel.org>.
63 select ATA_NONSTANDARD if ATA
68 depends on !IA64_SGI_SN2
78 config STACKTRACE_SUPPORT
81 config GENERIC_LOCKBREAK
84 config RWSEM_XCHGADD_ALGORITHM
88 config HUGETLB_PAGE_SIZE_VARIABLE
90 depends on HUGETLB_PAGE
93 config GENERIC_CALIBRATE_DELAY
97 config HAVE_SETUP_PER_CPU_AREA
103 select DMI_SCAN_MACHINE_NON_EFI_FALLBACK
110 config SCHED_OMIT_FRAME_POINTER
114 config IA64_UNCACHED_ALLOCATOR
116 select GENERIC_ALLOCATOR
118 config ARCH_USES_PG_UNCACHED
120 depends on IA64_UNCACHED_ALLOCATOR
137 This selects the system type of your hardware. A "generic" kernel
138 will run on any supported IA-64 system. However, if you configure
139 a kernel for your specific system, it will be faster and smaller.
141 generic For any supported IA-64 system
142 DIG-compliant For DIG ("Developer's Interface Guide") compliant systems
143 DIG+Intel+IOMMU For DIG systems with Intel IOMMU
144 HP-zx1/sx1000 For HP systems
145 HP-zx1/sx1000+swiotlb For HP systems with (broken) DMA-constrained devices.
146 SGI-SN2 For SGI Altix systems
147 SGI-UV For SGI UV systems
148 Ski-simulator For the HP simulator <http://www.hpl.hp.com/research/linux/ski/>
150 If you don't know what to do, choose "generic".
157 bool "DIG+Intel+IOMMU"
164 Build a kernel that runs on HP zx1 and sx1000 systems. This adds
165 support for the HP I/O MMU.
167 config IA64_HP_ZX1_SWIOTLB
168 bool "HP-zx1/sx1000 with software I/O TLB"
171 Build a kernel that runs on HP zx1 and sx1000 systems even when they
172 have broken PCI devices which cannot DMA to full 32 bits. Apart
173 from support for the HP I/O MMU, this includes support for the software
174 I/O TLB, which allows supporting the broken devices at the expense of
175 wasting some kernel memory (about 2MB by default).
182 Selecting this option will optimize the kernel for use on sn2 based
183 systems, but the resulting kernel binary will not run on other
184 types of ia64 systems. If you have an SGI Altix system, it's safe
185 to select this option. If in doubt, select ia64 generic support
194 Selecting this option will optimize the kernel for use on UV based
195 systems, but the resulting kernel binary will not run on other
196 types of ia64 systems. If you have an SGI UV system, it's safe
197 to select this option. If in doubt, select ia64 generic support
208 prompt "Processor type"
214 Select your IA-64 processor type. The default is Itanium.
215 This choice is safe for all IA-64 systems, but may not perform
216 optimally on systems with, say, Itanium 2 or newer processors.
221 Select this to configure for an Itanium 2 (McKinley) processor.
226 prompt "Kernel page size"
227 default IA64_PAGE_SIZE_16KB
229 config IA64_PAGE_SIZE_4KB
232 This lets you select the page size of the kernel. For best IA-64
233 performance, a page size of 8KB or 16KB is recommended. For best
234 IA-32 compatibility, a page size of 4KB should be selected (the vast
235 majority of IA-32 binaries work perfectly fine with a larger page
236 size). For Itanium 2 or newer systems, a page size of 64KB can also
239 4KB For best IA-32 compatibility
240 8KB For best IA-64 performance
241 16KB For best IA-64 performance
242 64KB Requires Itanium 2 or newer processor.
244 If you don't know what to do, choose 16KB.
246 config IA64_PAGE_SIZE_8KB
249 config IA64_PAGE_SIZE_16KB
252 config IA64_PAGE_SIZE_64KB
264 source kernel/Kconfig.hz
272 # align cache-sensitive data to 128 bytes
273 config IA64_L1_CACHE_SHIFT
275 default "7" if MCKINLEY
276 default "6" if ITANIUM
279 bool "Cyclone (EXA) Time Source support"
281 Say Y here to enable support for IBM EXA Cyclone time source.
282 If you're unsure, answer N.
286 depends on !IA64_HP_SIM
289 config FORCE_MAX_ZONEORDER
290 int "MAX_ORDER (11 - 17)" if !HUGETLB_PAGE
291 range 11 17 if !HUGETLB_PAGE
292 default "17" if HUGETLB_PAGE
296 bool "Symmetric multi-processing support"
298 This enables support for systems with more than one CPU. If you have
299 a system with only one CPU, say N. If you have a system with more
302 If you say N here, the kernel will run on single and multiprocessor
303 systems, but will use only one CPU of a multiprocessor system. If
304 you say Y here, the kernel will run on many, but not all,
305 single processor systems. On a single processor system, the kernel
306 will run faster if you say N here.
308 See also the SMP-HOWTO available at
309 <http://www.tldp.org/docs.html#howto>.
311 If you don't know what to do here, say N.
314 int "Maximum number of CPUs (2-4096)"
319 You should set this to the number of CPUs in your system, but
320 keep in mind that a kernel compiled for, e.g., 2 CPUs will boot but
321 only use 2 CPUs on a >2 CPU system. Setting this to a value larger
322 than 64 will cause the use of a CPU mask array, causing a small
326 bool "Support for hot-pluggable CPUs"
330 Say Y here to experiment with turning CPUs off and on. CPUs
331 can be controlled through /sys/devices/system/cpu/cpu#.
332 Say N if you want to disable CPU hotplug.
334 config ARCH_ENABLE_MEMORY_HOTPLUG
337 config ARCH_ENABLE_MEMORY_HOTREMOVE
341 bool "SMT scheduler support"
344 Improves the CPU scheduler's decision making when dealing with
345 Intel IA64 chips with MultiThreading at a cost of slightly increased
346 overhead in some places. If unsure say N here.
348 config PERMIT_BSP_REMOVE
349 bool "Support removal of Bootstrap Processor"
350 depends on HOTPLUG_CPU
353 Say Y here if your platform SAL will support removal of BSP with HOTPLUG_CPU
356 config FORCE_CPEI_RETARGET
357 bool "Force assumption that CPEI can be re-targeted"
358 depends on PERMIT_BSP_REMOVE
361 Say Y if you need to force the assumption that CPEI can be re-targeted to
362 any cpu in the system. This hint is available via ACPI 3.0 specifications.
363 Tiger4 systems are capable of re-directing CPEI to any CPU other than BSP.
364 This option it useful to enable this feature on older BIOS's as well.
365 You can also enable this by using boot command line option force_cpei=1.
367 config ARCH_SELECT_MEMORY_MODEL
370 config ARCH_DISCONTIGMEM_ENABLE
373 Say Y to support efficient handling of discontiguous physical memory,
374 for architectures which are either NUMA (Non-Uniform Memory Access)
375 or have huge holes in the physical address space for other reasons.
376 See <file:Documentation/vm/numa.rst> for more.
378 config ARCH_FLATMEM_ENABLE
381 config ARCH_SPARSEMEM_ENABLE
383 depends on ARCH_DISCONTIGMEM_ENABLE
384 select SPARSEMEM_VMEMMAP_ENABLE
386 config ARCH_DISCONTIGMEM_DEFAULT
387 def_bool y if (IA64_SGI_SN2 || IA64_GENERIC || IA64_HP_ZX1 || IA64_HP_ZX1_SWIOTLB)
388 depends on ARCH_DISCONTIGMEM_ENABLE
392 depends on !IA64_HP_SIM && !FLATMEM
393 default y if IA64_SGI_SN2
394 select ACPI_NUMA if ACPI
396 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
397 Access). This option is for configuring high-end multiprocessor
398 server systems. If in doubt, say N.
401 int "Max num nodes shift(3-10)"
404 depends on NEED_MULTIPLE_NODES
406 This option specifies the maximum number of nodes in your SSI system.
407 MAX_NUMNODES will be 2^(This value).
408 If in doubt, use the default.
410 # VIRTUAL_MEM_MAP and FLAT_NODE_MEM_MAP are functionally equivalent.
411 # VIRTUAL_MEM_MAP has been retained for historical reasons.
412 config VIRTUAL_MEM_MAP
413 bool "Virtual mem map"
414 depends on !SPARSEMEM
415 default y if !IA64_HP_SIM
417 Say Y to compile the kernel with support for a virtual mem map.
418 This code also only takes effect if a memory hole of greater than
419 1 Gb is found during boot. You must turn this option on if you
420 require the DISCONTIGMEM option for your machine. If you are
425 default y if VIRTUAL_MEM_MAP
427 config HAVE_ARCH_EARLY_PFN_TO_NID
428 def_bool NUMA && SPARSEMEM
430 config HAVE_ARCH_NODEDATA_EXTENSION
434 config USE_PERCPU_NUMA_NODE_ID
438 config HAVE_MEMORYLESS_NODES
441 config ARCH_PROC_KCORE_TEXT
443 depends on PROC_KCORE
445 config IA64_MCA_RECOVERY
446 tristate "MCA recovery from errors other than TLB."
449 bool "Performance monitor support"
452 Selects whether support for the IA-64 performance monitor hardware
453 is included in the kernel. This makes some kernel data-structures a
454 little bigger and slows down execution a bit, but it is generally
455 a good idea to turn this on. If you're unsure, say Y.
458 tristate "/proc/pal support"
460 If you say Y here, you are able to get PAL (Processor Abstraction
461 Layer) information in /proc/pal. This contains useful information
462 about the processors in your systems, such as cache and TLB sizes
463 and the PAL firmware version in use.
465 To use this option, you have to ensure that the "/proc file system
466 support" (CONFIG_PROC_FS) is enabled, too.
468 config IA64_MC_ERR_INJECT
469 tristate "MC error injection support"
471 Adds support for MC error injection. If enabled, the kernel
472 will provide a sysfs interface for user applications to
473 call MC error injection PAL procedures to inject various errors.
474 This is a useful tool for MCA testing.
476 If you're unsure, do not select this option.
479 def_bool y if (IA64_SGI_SN2 || IA64_GENERIC)
482 bool "ESI (Extensible SAL Interface) support"
484 If you say Y here, support is built into the kernel to
485 make ESI calls. ESI calls are used to support vendor-specific
486 firmware extensions, such as the ability to inject memory-errors
487 for test-purposes. If you're unsure, say N.
489 config IA64_HP_AML_NFW
490 bool "Support ACPI AML calls to native firmware"
492 This driver installs a global ACPI Operation Region handler for
493 region 0xA1. AML methods can use this OpRegion to call arbitrary
494 native firmware functions. The driver installs the OpRegion
495 handler if there is an HPQ5001 device or if the user supplies
496 the "force" module parameter, e.g., with the "aml_nfw.force"
497 kernel command line option.
499 source "drivers/sn/Kconfig"
502 bool "kexec system call"
503 depends on !IA64_HP_SIM && (!SMP || HOTPLUG_CPU)
506 kexec is a system call that implements the ability to shutdown your
507 current kernel, and to start another kernel. It is like a reboot
508 but it is independent of the system firmware. And like a reboot
509 you can start any kernel with it, not just Linux.
511 The name comes from the similarity to the exec system call.
513 It is an ongoing process to be certain the hardware in a machine
514 is properly shutdown, so do not be surprised if this code does not
515 initially work for you. As of this writing the exact hardware
516 interface is strongly in flux, so no good recommendation can be
520 bool "kernel crash dumps"
521 depends on IA64_MCA_RECOVERY && !IA64_HP_SIM && (!SMP || HOTPLUG_CPU)
523 Generate crash dump after being started by kexec.
525 source "drivers/firmware/Kconfig"
529 menu "Power management and ACPI options"
531 source "kernel/power/Kconfig"
533 source "drivers/acpi/Kconfig"
536 menu "CPU Frequency scaling"
537 source "drivers/cpufreq/Kconfig"
545 menu "Bus options (PCI, PCMCIA)"
550 Real IA-64 machines all have PCI/PCI-X/PCI Express busses. Say Y
551 here unless you are using a simulator without PCI support.
559 source "drivers/pci/Kconfig"
561 source "drivers/pcmcia/Kconfig"
567 source "arch/ia64/hp/sim/Kconfig"
570 tristate "Memory special operations driver"
572 select IA64_UNCACHED_ALLOCATOR
574 If you have an ia64 and you want to enable memory special
575 operations support (formerly known as fetchop), say Y here,