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 ACPI_SYSTEM_POWER_STATES_SUPPORT if ACPI
16 select ARCH_MIGHT_HAVE_ACPI_PDC if ACPI
17 select HAVE_UNSTABLE_SCHED_CLOCK
18 select HAVE_EXIT_THREAD
22 select HAVE_KRETPROBES
23 select HAVE_FTRACE_MCOUNT_RECORD
24 select HAVE_DYNAMIC_FTRACE if (!ITANIUM)
25 select HAVE_FUNCTION_TRACER
27 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 source "kernel/Kconfig.preempt"
369 config ARCH_SELECT_MEMORY_MODEL
372 config ARCH_DISCONTIGMEM_ENABLE
375 Say Y to support efficient handling of discontiguous physical memory,
376 for architectures which are either NUMA (Non-Uniform Memory Access)
377 or have huge holes in the physical address space for other reasons.
378 See <file:Documentation/vm/numa.rst> for more.
380 config ARCH_FLATMEM_ENABLE
383 config ARCH_SPARSEMEM_ENABLE
385 depends on ARCH_DISCONTIGMEM_ENABLE
386 select SPARSEMEM_VMEMMAP_ENABLE
388 config ARCH_DISCONTIGMEM_DEFAULT
389 def_bool y if (IA64_SGI_SN2 || IA64_GENERIC || IA64_HP_ZX1 || IA64_HP_ZX1_SWIOTLB)
390 depends on ARCH_DISCONTIGMEM_ENABLE
394 depends on !IA64_HP_SIM && !FLATMEM
395 default y if IA64_SGI_SN2
396 select ACPI_NUMA if ACPI
398 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
399 Access). This option is for configuring high-end multiprocessor
400 server systems. If in doubt, say N.
403 int "Max num nodes shift(3-10)"
406 depends on NEED_MULTIPLE_NODES
408 This option specifies the maximum number of nodes in your SSI system.
409 MAX_NUMNODES will be 2^(This value).
410 If in doubt, use the default.
412 # VIRTUAL_MEM_MAP and FLAT_NODE_MEM_MAP are functionally equivalent.
413 # VIRTUAL_MEM_MAP has been retained for historical reasons.
414 config VIRTUAL_MEM_MAP
415 bool "Virtual mem map"
416 depends on !SPARSEMEM
417 default y if !IA64_HP_SIM
419 Say Y to compile the kernel with support for a virtual mem map.
420 This code also only takes effect if a memory hole of greater than
421 1 Gb is found during boot. You must turn this option on if you
422 require the DISCONTIGMEM option for your machine. If you are
427 default y if VIRTUAL_MEM_MAP
429 config HAVE_ARCH_EARLY_PFN_TO_NID
430 def_bool NUMA && SPARSEMEM
432 config HAVE_ARCH_NODEDATA_EXTENSION
436 config USE_PERCPU_NUMA_NODE_ID
440 config HAVE_MEMORYLESS_NODES
443 config ARCH_PROC_KCORE_TEXT
445 depends on PROC_KCORE
447 config IA64_MCA_RECOVERY
448 tristate "MCA recovery from errors other than TLB."
451 bool "Performance monitor support"
454 Selects whether support for the IA-64 performance monitor hardware
455 is included in the kernel. This makes some kernel data-structures a
456 little bigger and slows down execution a bit, but it is generally
457 a good idea to turn this on. If you're unsure, say Y.
460 tristate "/proc/pal support"
462 If you say Y here, you are able to get PAL (Processor Abstraction
463 Layer) information in /proc/pal. This contains useful information
464 about the processors in your systems, such as cache and TLB sizes
465 and the PAL firmware version in use.
467 To use this option, you have to ensure that the "/proc file system
468 support" (CONFIG_PROC_FS) is enabled, too.
470 config IA64_MC_ERR_INJECT
471 tristate "MC error injection support"
473 Adds support for MC error injection. If enabled, the kernel
474 will provide a sysfs interface for user applications to
475 call MC error injection PAL procedures to inject various errors.
476 This is a useful tool for MCA testing.
478 If you're unsure, do not select this option.
481 def_bool y if (IA64_SGI_SN2 || IA64_GENERIC)
484 bool "ESI (Extensible SAL Interface) support"
486 If you say Y here, support is built into the kernel to
487 make ESI calls. ESI calls are used to support vendor-specific
488 firmware extensions, such as the ability to inject memory-errors
489 for test-purposes. If you're unsure, say N.
491 config IA64_HP_AML_NFW
492 bool "Support ACPI AML calls to native firmware"
494 This driver installs a global ACPI Operation Region handler for
495 region 0xA1. AML methods can use this OpRegion to call arbitrary
496 native firmware functions. The driver installs the OpRegion
497 handler if there is an HPQ5001 device or if the user supplies
498 the "force" module parameter, e.g., with the "aml_nfw.force"
499 kernel command line option.
501 source "drivers/sn/Kconfig"
504 bool "kexec system call"
505 depends on !IA64_HP_SIM && (!SMP || HOTPLUG_CPU)
508 kexec is a system call that implements the ability to shutdown your
509 current kernel, and to start another kernel. It is like a reboot
510 but it is independent of the system firmware. And like a reboot
511 you can start any kernel with it, not just Linux.
513 The name comes from the similarity to the exec system call.
515 It is an ongoing process to be certain the hardware in a machine
516 is properly shutdown, so do not be surprised if this code does not
517 initially work for you. As of this writing the exact hardware
518 interface is strongly in flux, so no good recommendation can be
522 bool "kernel crash dumps"
523 depends on IA64_MCA_RECOVERY && !IA64_HP_SIM && (!SMP || HOTPLUG_CPU)
525 Generate crash dump after being started by kexec.
527 source "drivers/firmware/Kconfig"
531 menu "Power management and ACPI options"
533 source "kernel/power/Kconfig"
535 source "drivers/acpi/Kconfig"
538 menu "CPU Frequency scaling"
539 source "drivers/cpufreq/Kconfig"
547 menu "Bus options (PCI, PCMCIA)"
552 Real IA-64 machines all have PCI/PCI-X/PCI Express busses. Say Y
553 here unless you are using a simulator without PCI support.
561 source "drivers/pci/Kconfig"
563 source "drivers/pcmcia/Kconfig"
569 source "arch/ia64/hp/sim/Kconfig"
572 tristate "Memory special operations driver"
574 select IA64_UNCACHED_ALLOCATOR
576 If you have an ia64 and you want to enable memory special
577 operations support (formerly known as fetchop), say Y here,