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 ACPI if (!IA64_HP_SIM)
14 select ARCH_SUPPORTS_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 FORCE_PCI if (!IA64_HP_SIM)
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
64 select ATA_NONSTANDARD if ATA
69 depends on !IA64_SGI_SN2
79 config STACKTRACE_SUPPORT
82 config GENERIC_LOCKBREAK
85 config HUGETLB_PAGE_SIZE_VARIABLE
87 depends on HUGETLB_PAGE
90 config GENERIC_CALIBRATE_DELAY
94 config HAVE_SETUP_PER_CPU_AREA
100 select DMI_SCAN_MACHINE_NON_EFI_FALLBACK
107 config SCHED_OMIT_FRAME_POINTER
111 config IA64_UNCACHED_ALLOCATOR
113 select GENERIC_ALLOCATOR
115 config ARCH_USES_PG_UNCACHED
117 depends on IA64_UNCACHED_ALLOCATOR
134 This selects the system type of your hardware. A "generic" kernel
135 will run on any supported IA-64 system. However, if you configure
136 a kernel for your specific system, it will be faster and smaller.
138 generic For any supported IA-64 system
139 DIG-compliant For DIG ("Developer's Interface Guide") compliant systems
140 DIG+Intel+IOMMU For DIG systems with Intel IOMMU
141 HP-zx1/sx1000 For HP systems
142 HP-zx1/sx1000+swiotlb For HP systems with (broken) DMA-constrained devices.
143 SGI-SN2 For SGI Altix systems
144 SGI-UV For SGI UV systems
145 Ski-simulator For the HP simulator <http://www.hpl.hp.com/research/linux/ski/>
147 If you don't know what to do, choose "generic".
154 bool "DIG+Intel+IOMMU"
161 Build a kernel that runs on HP zx1 and sx1000 systems. This adds
162 support for the HP I/O MMU.
164 config IA64_HP_ZX1_SWIOTLB
165 bool "HP-zx1/sx1000 with software I/O TLB"
168 Build a kernel that runs on HP zx1 and sx1000 systems even when they
169 have broken PCI devices which cannot DMA to full 32 bits. Apart
170 from support for the HP I/O MMU, this includes support for the software
171 I/O TLB, which allows supporting the broken devices at the expense of
172 wasting some kernel memory (about 2MB by default).
179 Selecting this option will optimize the kernel for use on sn2 based
180 systems, but the resulting kernel binary will not run on other
181 types of ia64 systems. If you have an SGI Altix system, it's safe
182 to select this option. If in doubt, select ia64 generic support
191 Selecting this option will optimize the kernel for use on UV based
192 systems, but the resulting kernel binary will not run on other
193 types of ia64 systems. If you have an SGI UV system, it's safe
194 to select this option. If in doubt, select ia64 generic support
205 prompt "Processor type"
211 Select your IA-64 processor type. The default is Itanium.
212 This choice is safe for all IA-64 systems, but may not perform
213 optimally on systems with, say, Itanium 2 or newer processors.
218 Select this to configure for an Itanium 2 (McKinley) processor.
223 prompt "Kernel page size"
224 default IA64_PAGE_SIZE_16KB
226 config IA64_PAGE_SIZE_4KB
229 This lets you select the page size of the kernel. For best IA-64
230 performance, a page size of 8KB or 16KB is recommended. For best
231 IA-32 compatibility, a page size of 4KB should be selected (the vast
232 majority of IA-32 binaries work perfectly fine with a larger page
233 size). For Itanium 2 or newer systems, a page size of 64KB can also
236 4KB For best IA-32 compatibility
237 8KB For best IA-64 performance
238 16KB For best IA-64 performance
239 64KB Requires Itanium 2 or newer processor.
241 If you don't know what to do, choose 16KB.
243 config IA64_PAGE_SIZE_8KB
246 config IA64_PAGE_SIZE_16KB
249 config IA64_PAGE_SIZE_64KB
261 source "kernel/Kconfig.hz"
269 # align cache-sensitive data to 128 bytes
270 config IA64_L1_CACHE_SHIFT
272 default "7" if MCKINLEY
273 default "6" if ITANIUM
276 bool "Cyclone (EXA) Time Source support"
278 Say Y here to enable support for IBM EXA Cyclone time source.
279 If you're unsure, answer N.
283 depends on !IA64_HP_SIM
286 config FORCE_MAX_ZONEORDER
287 int "MAX_ORDER (11 - 17)" if !HUGETLB_PAGE
288 range 11 17 if !HUGETLB_PAGE
289 default "17" if HUGETLB_PAGE
293 bool "Symmetric multi-processing support"
295 This enables support for systems with more than one CPU. If you have
296 a system with only one CPU, say N. If you have a system with more
299 If you say N here, the kernel will run on single and multiprocessor
300 systems, but will use only one CPU of a multiprocessor system. If
301 you say Y here, the kernel will run on many, but not all,
302 single processor systems. On a single processor system, the kernel
303 will run faster if you say N here.
305 See also the SMP-HOWTO available at
306 <http://www.tldp.org/docs.html#howto>.
308 If you don't know what to do here, say N.
311 int "Maximum number of CPUs (2-4096)"
316 You should set this to the number of CPUs in your system, but
317 keep in mind that a kernel compiled for, e.g., 2 CPUs will boot but
318 only use 2 CPUs on a >2 CPU system. Setting this to a value larger
319 than 64 will cause the use of a CPU mask array, causing a small
323 bool "Support for hot-pluggable CPUs"
327 Say Y here to experiment with turning CPUs off and on. CPUs
328 can be controlled through /sys/devices/system/cpu/cpu#.
329 Say N if you want to disable CPU hotplug.
331 config ARCH_ENABLE_MEMORY_HOTPLUG
334 config ARCH_ENABLE_MEMORY_HOTREMOVE
338 bool "SMT scheduler support"
341 Improves the CPU scheduler's decision making when dealing with
342 Intel IA64 chips with MultiThreading at a cost of slightly increased
343 overhead in some places. If unsure say N here.
345 config PERMIT_BSP_REMOVE
346 bool "Support removal of Bootstrap Processor"
347 depends on HOTPLUG_CPU
350 Say Y here if your platform SAL will support removal of BSP with HOTPLUG_CPU
353 config FORCE_CPEI_RETARGET
354 bool "Force assumption that CPEI can be re-targeted"
355 depends on PERMIT_BSP_REMOVE
358 Say Y if you need to force the assumption that CPEI can be re-targeted to
359 any cpu in the system. This hint is available via ACPI 3.0 specifications.
360 Tiger4 systems are capable of re-directing CPEI to any CPU other than BSP.
361 This option it useful to enable this feature on older BIOS's as well.
362 You can also enable this by using boot command line option force_cpei=1.
364 config ARCH_SELECT_MEMORY_MODEL
367 config ARCH_DISCONTIGMEM_ENABLE
370 Say Y to support efficient handling of discontiguous physical memory,
371 for architectures which are either NUMA (Non-Uniform Memory Access)
372 or have huge holes in the physical address space for other reasons.
373 See <file:Documentation/vm/numa.rst> for more.
375 config ARCH_FLATMEM_ENABLE
378 config ARCH_SPARSEMEM_ENABLE
380 depends on ARCH_DISCONTIGMEM_ENABLE
381 select SPARSEMEM_VMEMMAP_ENABLE
383 config ARCH_DISCONTIGMEM_DEFAULT
384 def_bool y if (IA64_SGI_SN2 || IA64_GENERIC || IA64_HP_ZX1 || IA64_HP_ZX1_SWIOTLB)
385 depends on ARCH_DISCONTIGMEM_ENABLE
389 depends on !IA64_HP_SIM && !FLATMEM
390 default y if IA64_SGI_SN2
391 select ACPI_NUMA if ACPI
393 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
394 Access). This option is for configuring high-end multiprocessor
395 server systems. If in doubt, say N.
398 int "Max num nodes shift(3-10)"
401 depends on NEED_MULTIPLE_NODES
403 This option specifies the maximum number of nodes in your SSI system.
404 MAX_NUMNODES will be 2^(This value).
405 If in doubt, use the default.
407 # VIRTUAL_MEM_MAP and FLAT_NODE_MEM_MAP are functionally equivalent.
408 # VIRTUAL_MEM_MAP has been retained for historical reasons.
409 config VIRTUAL_MEM_MAP
410 bool "Virtual mem map"
411 depends on !SPARSEMEM
412 default y if !IA64_HP_SIM
414 Say Y to compile the kernel with support for a virtual mem map.
415 This code also only takes effect if a memory hole of greater than
416 1 Gb is found during boot. You must turn this option on if you
417 require the DISCONTIGMEM option for your machine. If you are
422 default y if VIRTUAL_MEM_MAP
424 config HAVE_ARCH_EARLY_PFN_TO_NID
425 def_bool NUMA && SPARSEMEM
427 config HAVE_ARCH_NODEDATA_EXTENSION
431 config USE_PERCPU_NUMA_NODE_ID
435 config HAVE_MEMORYLESS_NODES
438 config ARCH_PROC_KCORE_TEXT
440 depends on PROC_KCORE
442 config IA64_MCA_RECOVERY
443 tristate "MCA recovery from errors other than TLB."
446 bool "Performance monitor support"
449 Selects whether support for the IA-64 performance monitor hardware
450 is included in the kernel. This makes some kernel data-structures a
451 little bigger and slows down execution a bit, but it is generally
452 a good idea to turn this on. If you're unsure, say Y.
455 tristate "/proc/pal support"
457 If you say Y here, you are able to get PAL (Processor Abstraction
458 Layer) information in /proc/pal. This contains useful information
459 about the processors in your systems, such as cache and TLB sizes
460 and the PAL firmware version in use.
462 To use this option, you have to ensure that the "/proc file system
463 support" (CONFIG_PROC_FS) is enabled, too.
465 config IA64_MC_ERR_INJECT
466 tristate "MC error injection support"
468 Adds support for MC error injection. If enabled, the kernel
469 will provide a sysfs interface for user applications to
470 call MC error injection PAL procedures to inject various errors.
471 This is a useful tool for MCA testing.
473 If you're unsure, do not select this option.
476 def_bool y if (IA64_SGI_SN2 || IA64_GENERIC)
479 bool "ESI (Extensible SAL Interface) support"
481 If you say Y here, support is built into the kernel to
482 make ESI calls. ESI calls are used to support vendor-specific
483 firmware extensions, such as the ability to inject memory-errors
484 for test-purposes. If you're unsure, say N.
486 config IA64_HP_AML_NFW
487 bool "Support ACPI AML calls to native firmware"
489 This driver installs a global ACPI Operation Region handler for
490 region 0xA1. AML methods can use this OpRegion to call arbitrary
491 native firmware functions. The driver installs the OpRegion
492 handler if there is an HPQ5001 device or if the user supplies
493 the "force" module parameter, e.g., with the "aml_nfw.force"
494 kernel command line option.
496 source "drivers/sn/Kconfig"
499 bool "kexec system call"
500 depends on !IA64_HP_SIM && (!SMP || HOTPLUG_CPU)
503 kexec is a system call that implements the ability to shutdown your
504 current kernel, and to start another kernel. It is like a reboot
505 but it is independent of the system firmware. And like a reboot
506 you can start any kernel with it, not just Linux.
508 The name comes from the similarity to the exec system call.
510 It is an ongoing process to be certain the hardware in a machine
511 is properly shutdown, so do not be surprised if this code does not
512 initially work for you. As of this writing the exact hardware
513 interface is strongly in flux, so no good recommendation can be
517 bool "kernel crash dumps"
518 depends on IA64_MCA_RECOVERY && !IA64_HP_SIM && (!SMP || HOTPLUG_CPU)
520 Generate crash dump after being started by kexec.
522 source "drivers/firmware/Kconfig"
526 menu "Power management and ACPI options"
528 source "kernel/power/Kconfig"
530 source "drivers/acpi/Kconfig"
533 menu "CPU Frequency scaling"
534 source "drivers/cpufreq/Kconfig"
540 source "arch/ia64/hp/sim/Kconfig"
543 tristate "Memory special operations driver"
545 select IA64_UNCACHED_ALLOCATOR
547 If you have an ia64 and you want to enable memory special
548 operations support (formerly known as fetchop), say Y here,