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
9 source "kernel/Kconfig.freezer"
11 menu "Processor type and features"
15 select ARCH_MIGHT_HAVE_PC_PARPORT
16 select ARCH_MIGHT_HAVE_PC_SERIO
17 select PCI if (!IA64_HP_SIM)
18 select ACPI if (!IA64_HP_SIM)
19 select ACPI_SYSTEM_POWER_STATES_SUPPORT if ACPI
20 select ARCH_MIGHT_HAVE_ACPI_PDC if ACPI
21 select HAVE_UNSTABLE_SCHED_CLOCK
22 select HAVE_EXIT_THREAD
26 select HAVE_KRETPROBES
27 select HAVE_FTRACE_MCOUNT_RECORD
28 select HAVE_DYNAMIC_FTRACE if (!ITANIUM)
29 select HAVE_FUNCTION_TRACER
31 select HAVE_ARCH_TRACEHOOK
32 select HAVE_DMA_API_DEBUG
34 select HAVE_MEMBLOCK_NODE_MAP
35 select HAVE_VIRT_CPU_ACCOUNTING
36 select ARCH_HAS_DMA_MARK_CLEAN
37 select ARCH_HAS_SG_CHAIN
39 select ARCH_DISCARD_MEMBLOCK
40 select GENERIC_IRQ_PROBE
41 select GENERIC_PENDING_IRQ if SMP
42 select GENERIC_IRQ_SHOW
43 select GENERIC_IRQ_LEGACY
44 select ARCH_HAVE_NMI_SAFE_CMPXCHG
46 select GENERIC_SMP_IDLE_THREAD
47 select ARCH_TASK_STRUCT_ON_STACK
48 select ARCH_TASK_STRUCT_ALLOCATOR
49 select ARCH_THREAD_STACK_ALLOCATOR
50 select ARCH_CLOCKSOURCE_DATA
51 select GENERIC_TIME_VSYSCALL
52 select SYSCTL_ARCH_UNALIGN_NO_WARN
53 select HAVE_MOD_ARCH_SPECIFIC
54 select MODULES_USE_ELF_RELA
55 select ARCH_USE_CMPXCHG_LOCKREF
56 select HAVE_ARCH_AUDITSYSCALL
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 ARCH_DMA_ADDR_T_64BIT
84 config NEED_DMA_MAP_STATE
87 config NEED_SG_DMA_LENGTH
93 config STACKTRACE_SUPPORT
96 config GENERIC_LOCKBREAK
99 config RWSEM_XCHGADD_ALGORITHM
103 config HUGETLB_PAGE_SIZE_VARIABLE
105 depends on HUGETLB_PAGE
108 config GENERIC_CALIBRATE_DELAY
112 config HAVE_SETUP_PER_CPU_AREA
118 select DMI_SCAN_MACHINE_NON_EFI_FALLBACK
125 config SCHED_OMIT_FRAME_POINTER
129 config IA64_UNCACHED_ALLOCATOR
131 select GENERIC_ALLOCATOR
133 config ARCH_USES_PG_UNCACHED
135 depends on IA64_UNCACHED_ALLOCATOR
149 select DMA_DIRECT_OPS
153 This selects the system type of your hardware. A "generic" kernel
154 will run on any supported IA-64 system. However, if you configure
155 a kernel for your specific system, it will be faster and smaller.
157 generic For any supported IA-64 system
158 DIG-compliant For DIG ("Developer's Interface Guide") compliant systems
159 DIG+Intel+IOMMU For DIG systems with Intel IOMMU
160 HP-zx1/sx1000 For HP systems
161 HP-zx1/sx1000+swiotlb For HP systems with (broken) DMA-constrained devices.
162 SGI-SN2 For SGI Altix systems
163 SGI-UV For SGI UV systems
164 Ski-simulator For the HP simulator <http://www.hpl.hp.com/research/linux/ski/>
166 If you don't know what to do, choose "generic".
170 select DMA_DIRECT_OPS
174 bool "DIG+Intel+IOMMU"
181 Build a kernel that runs on HP zx1 and sx1000 systems. This adds
182 support for the HP I/O MMU.
184 config IA64_HP_ZX1_SWIOTLB
185 bool "HP-zx1/sx1000 with software I/O TLB"
186 select DMA_DIRECT_OPS
189 Build a kernel that runs on HP zx1 and sx1000 systems even when they
190 have broken PCI devices which cannot DMA to full 32 bits. Apart
191 from support for the HP I/O MMU, this includes support for the software
192 I/O TLB, which allows supporting the broken devices at the expense of
193 wasting some kernel memory (about 2MB by default).
200 Selecting this option will optimize the kernel for use on sn2 based
201 systems, but the resulting kernel binary will not run on other
202 types of ia64 systems. If you have an SGI Altix system, it's safe
203 to select this option. If in doubt, select ia64 generic support
210 select DMA_DIRECT_OPS
213 Selecting this option will optimize the kernel for use on UV based
214 systems, but the resulting kernel binary will not run on other
215 types of ia64 systems. If you have an SGI UV system, it's safe
216 to select this option. If in doubt, select ia64 generic support
221 select DMA_DIRECT_OPS
228 prompt "Processor type"
234 Select your IA-64 processor type. The default is Itanium.
235 This choice is safe for all IA-64 systems, but may not perform
236 optimally on systems with, say, Itanium 2 or newer processors.
241 Select this to configure for an Itanium 2 (McKinley) processor.
246 prompt "Kernel page size"
247 default IA64_PAGE_SIZE_16KB
249 config IA64_PAGE_SIZE_4KB
252 This lets you select the page size of the kernel. For best IA-64
253 performance, a page size of 8KB or 16KB is recommended. For best
254 IA-32 compatibility, a page size of 4KB should be selected (the vast
255 majority of IA-32 binaries work perfectly fine with a larger page
256 size). For Itanium 2 or newer systems, a page size of 64KB can also
259 4KB For best IA-32 compatibility
260 8KB For best IA-64 performance
261 16KB For best IA-64 performance
262 64KB Requires Itanium 2 or newer processor.
264 If you don't know what to do, choose 16KB.
266 config IA64_PAGE_SIZE_8KB
269 config IA64_PAGE_SIZE_16KB
272 config IA64_PAGE_SIZE_64KB
284 source kernel/Kconfig.hz
292 # align cache-sensitive data to 128 bytes
293 config IA64_L1_CACHE_SHIFT
295 default "7" if MCKINLEY
296 default "6" if ITANIUM
299 bool "Cyclone (EXA) Time Source support"
301 Say Y here to enable support for IBM EXA Cyclone time source.
302 If you're unsure, answer N.
306 depends on !IA64_HP_SIM
309 config FORCE_MAX_ZONEORDER
310 int "MAX_ORDER (11 - 17)" if !HUGETLB_PAGE
311 range 11 17 if !HUGETLB_PAGE
312 default "17" if HUGETLB_PAGE
316 bool "Symmetric multi-processing support"
318 This enables support for systems with more than one CPU. If you have
319 a system with only one CPU, say N. If you have a system with more
322 If you say N here, the kernel will run on single and multiprocessor
323 systems, but will use only one CPU of a multiprocessor system. If
324 you say Y here, the kernel will run on many, but not all,
325 single processor systems. On a single processor system, the kernel
326 will run faster if you say N here.
328 See also the SMP-HOWTO available at
329 <http://www.tldp.org/docs.html#howto>.
331 If you don't know what to do here, say N.
334 int "Maximum number of CPUs (2-4096)"
339 You should set this to the number of CPUs in your system, but
340 keep in mind that a kernel compiled for, e.g., 2 CPUs will boot but
341 only use 2 CPUs on a >2 CPU system. Setting this to a value larger
342 than 64 will cause the use of a CPU mask array, causing a small
346 bool "Support for hot-pluggable CPUs"
350 Say Y here to experiment with turning CPUs off and on. CPUs
351 can be controlled through /sys/devices/system/cpu/cpu#.
352 Say N if you want to disable CPU hotplug.
354 config ARCH_ENABLE_MEMORY_HOTPLUG
357 config ARCH_ENABLE_MEMORY_HOTREMOVE
361 bool "SMT scheduler support"
364 Improves the CPU scheduler's decision making when dealing with
365 Intel IA64 chips with MultiThreading at a cost of slightly increased
366 overhead in some places. If unsure say N here.
368 config PERMIT_BSP_REMOVE
369 bool "Support removal of Bootstrap Processor"
370 depends on HOTPLUG_CPU
373 Say Y here if your platform SAL will support removal of BSP with HOTPLUG_CPU
376 config FORCE_CPEI_RETARGET
377 bool "Force assumption that CPEI can be re-targeted"
378 depends on PERMIT_BSP_REMOVE
381 Say Y if you need to force the assumption that CPEI can be re-targeted to
382 any cpu in the system. This hint is available via ACPI 3.0 specifications.
383 Tiger4 systems are capable of re-directing CPEI to any CPU other than BSP.
384 This option it useful to enable this feature on older BIOS's as well.
385 You can also enable this by using boot command line option force_cpei=1.
387 source "kernel/Kconfig.preempt"
391 config ARCH_SELECT_MEMORY_MODEL
394 config ARCH_DISCONTIGMEM_ENABLE
397 Say Y to support efficient handling of discontiguous physical memory,
398 for architectures which are either NUMA (Non-Uniform Memory Access)
399 or have huge holes in the physical address space for other reasons.
400 See <file:Documentation/vm/numa> for more.
402 config ARCH_FLATMEM_ENABLE
405 config ARCH_SPARSEMEM_ENABLE
407 depends on ARCH_DISCONTIGMEM_ENABLE
408 select SPARSEMEM_VMEMMAP_ENABLE
410 config ARCH_DISCONTIGMEM_DEFAULT
411 def_bool y if (IA64_SGI_SN2 || IA64_GENERIC || IA64_HP_ZX1 || IA64_HP_ZX1_SWIOTLB)
412 depends on ARCH_DISCONTIGMEM_ENABLE
416 depends on !IA64_HP_SIM && !FLATMEM
417 default y if IA64_SGI_SN2
418 select ACPI_NUMA if ACPI
420 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
421 Access). This option is for configuring high-end multiprocessor
422 server systems. If in doubt, say N.
425 int "Max num nodes shift(3-10)"
428 depends on NEED_MULTIPLE_NODES
430 This option specifies the maximum number of nodes in your SSI system.
431 MAX_NUMNODES will be 2^(This value).
432 If in doubt, use the default.
434 # VIRTUAL_MEM_MAP and FLAT_NODE_MEM_MAP are functionally equivalent.
435 # VIRTUAL_MEM_MAP has been retained for historical reasons.
436 config VIRTUAL_MEM_MAP
437 bool "Virtual mem map"
438 depends on !SPARSEMEM
439 default y if !IA64_HP_SIM
441 Say Y to compile the kernel with support for a virtual mem map.
442 This code also only takes effect if a memory hole of greater than
443 1 Gb is found during boot. You must turn this option on if you
444 require the DISCONTIGMEM option for your machine. If you are
449 default y if VIRTUAL_MEM_MAP
451 config HAVE_ARCH_EARLY_PFN_TO_NID
452 def_bool NUMA && SPARSEMEM
454 config HAVE_ARCH_NODEDATA_EXTENSION
458 config USE_PERCPU_NUMA_NODE_ID
462 config HAVE_MEMORYLESS_NODES
465 config ARCH_PROC_KCORE_TEXT
467 depends on PROC_KCORE
469 config IA64_MCA_RECOVERY
470 tristate "MCA recovery from errors other than TLB."
473 bool "Performance monitor support"
475 Selects whether support for the IA-64 performance monitor hardware
476 is included in the kernel. This makes some kernel data-structures a
477 little bigger and slows down execution a bit, but it is generally
478 a good idea to turn this on. If you're unsure, say Y.
481 tristate "/proc/pal support"
483 If you say Y here, you are able to get PAL (Processor Abstraction
484 Layer) information in /proc/pal. This contains useful information
485 about the processors in your systems, such as cache and TLB sizes
486 and the PAL firmware version in use.
488 To use this option, you have to ensure that the "/proc file system
489 support" (CONFIG_PROC_FS) is enabled, too.
491 config IA64_MC_ERR_INJECT
492 tristate "MC error injection support"
494 Adds support for MC error injection. If enabled, the kernel
495 will provide a sysfs interface for user applications to
496 call MC error injection PAL procedures to inject various errors.
497 This is a useful tool for MCA testing.
499 If you're unsure, do not select this option.
502 def_bool y if (IA64_SGI_SN2 || IA64_GENERIC)
505 bool "ESI (Extensible SAL Interface) support"
507 If you say Y here, support is built into the kernel to
508 make ESI calls. ESI calls are used to support vendor-specific
509 firmware extensions, such as the ability to inject memory-errors
510 for test-purposes. If you're unsure, say N.
512 config IA64_HP_AML_NFW
513 bool "Support ACPI AML calls to native firmware"
515 This driver installs a global ACPI Operation Region handler for
516 region 0xA1. AML methods can use this OpRegion to call arbitrary
517 native firmware functions. The driver installs the OpRegion
518 handler if there is an HPQ5001 device or if the user supplies
519 the "force" module parameter, e.g., with the "aml_nfw.force"
520 kernel command line option.
522 source "drivers/sn/Kconfig"
525 bool "kexec system call"
526 depends on !IA64_HP_SIM && (!SMP || HOTPLUG_CPU)
529 kexec is a system call that implements the ability to shutdown your
530 current kernel, and to start another kernel. It is like a reboot
531 but it is independent of the system firmware. And like a reboot
532 you can start any kernel with it, not just Linux.
534 The name comes from the similarity to the exec system call.
536 It is an ongoing process to be certain the hardware in a machine
537 is properly shutdown, so do not be surprised if this code does not
538 initially work for you. As of this writing the exact hardware
539 interface is strongly in flux, so no good recommendation can be
543 bool "kernel crash dumps"
544 depends on IA64_MCA_RECOVERY && !IA64_HP_SIM && (!SMP || HOTPLUG_CPU)
546 Generate crash dump after being started by kexec.
548 source "drivers/firmware/Kconfig"
550 source "fs/Kconfig.binfmt"
554 menu "Power management and ACPI options"
556 source "kernel/power/Kconfig"
558 source "drivers/acpi/Kconfig"
561 menu "CPU Frequency scaling"
562 source "drivers/cpufreq/Kconfig"
570 menu "Bus options (PCI, PCMCIA)"
575 Real IA-64 machines all have PCI/PCI-X/PCI Express busses. Say Y
576 here unless you are using a simulator without PCI support.
584 source "drivers/pci/Kconfig"
586 source "drivers/pcmcia/Kconfig"
594 source "drivers/Kconfig"
596 source "arch/ia64/hp/sim/Kconfig"
599 tristate "Memory special operations driver"
601 select IA64_UNCACHED_ALLOCATOR
603 If you have an ia64 and you want to enable memory special
604 operations support (formerly known as fetchop), say Y here,
609 source "arch/ia64/Kconfig.debug"
611 source "security/Kconfig"
613 source "crypto/Kconfig"
618 def_bool (IA64_HP_ZX1 || IA64_HP_ZX1_SWIOTLB || IA64_GENERIC || SWIOTLB)