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_SG_CHAIN
38 select ARCH_DISCARD_MEMBLOCK
39 select GENERIC_IRQ_PROBE
40 select GENERIC_PENDING_IRQ if SMP
41 select GENERIC_IRQ_SHOW
42 select GENERIC_IRQ_LEGACY
43 select ARCH_HAVE_NMI_SAFE_CMPXCHG
45 select GENERIC_SMP_IDLE_THREAD
47 select ARCH_TASK_STRUCT_ALLOCATOR
48 select ARCH_THREAD_STACK_ALLOCATOR
49 select ARCH_CLOCKSOURCE_DATA
50 select GENERIC_TIME_VSYSCALL_OLD
51 select SYSCTL_ARCH_UNALIGN_NO_WARN
52 select HAVE_MOD_ARCH_SPECIFIC
53 select MODULES_USE_ELF_RELA
54 select ARCH_USE_CMPXCHG_LOCKREF
55 select HAVE_ARCH_AUDITSYSCALL
58 The Itanium Processor Family is Intel's 64-bit successor to
59 the 32-bit X86 line. The IA-64 Linux project has a home
60 page at <http://www.linuxia64.org/> and a mailing list at
61 <linux-ia64@vger.kernel.org>.
65 select ATA_NONSTANDARD if ATA
70 depends on !IA64_SGI_SN2
80 config ARCH_DMA_ADDR_T_64BIT
83 config NEED_DMA_MAP_STATE
86 config NEED_SG_DMA_LENGTH
92 config STACKTRACE_SUPPORT
95 config GENERIC_LOCKBREAK
98 config RWSEM_XCHGADD_ALGORITHM
102 config HUGETLB_PAGE_SIZE_VARIABLE
104 depends on HUGETLB_PAGE
107 config GENERIC_CALIBRATE_DELAY
111 config HAVE_SETUP_PER_CPU_AREA
117 select DMI_SCAN_MACHINE_NON_EFI_FALLBACK
124 config SCHED_OMIT_FRAME_POINTER
128 config IA64_UNCACHED_ALLOCATOR
130 select GENERIC_ALLOCATOR
132 config ARCH_USES_PG_UNCACHED
134 depends on IA64_UNCACHED_ALLOCATOR
151 This selects the system type of your hardware. A "generic" kernel
152 will run on any supported IA-64 system. However, if you configure
153 a kernel for your specific system, it will be faster and smaller.
155 generic For any supported IA-64 system
156 DIG-compliant For DIG ("Developer's Interface Guide") compliant systems
157 DIG+Intel+IOMMU For DIG systems with Intel IOMMU
158 HP-zx1/sx1000 For HP systems
159 HP-zx1/sx1000+swiotlb For HP systems with (broken) DMA-constrained devices.
160 SGI-SN2 For SGI Altix systems
161 SGI-UV For SGI UV systems
162 Ski-simulator For the HP simulator <http://www.hpl.hp.com/research/linux/ski/>
164 If you don't know what to do, choose "generic".
171 bool "DIG+Intel+IOMMU"
178 Build a kernel that runs on HP zx1 and sx1000 systems. This adds
179 support for the HP I/O MMU.
181 config IA64_HP_ZX1_SWIOTLB
182 bool "HP-zx1/sx1000 with software I/O TLB"
185 Build a kernel that runs on HP zx1 and sx1000 systems even when they
186 have broken PCI devices which cannot DMA to full 32 bits. Apart
187 from support for the HP I/O MMU, this includes support for the software
188 I/O TLB, which allows supporting the broken devices at the expense of
189 wasting some kernel memory (about 2MB by default).
196 Selecting this option will optimize the kernel for use on sn2 based
197 systems, but the resulting kernel binary will not run on other
198 types of ia64 systems. If you have an SGI Altix system, it's safe
199 to select this option. If in doubt, select ia64 generic support
208 Selecting this option will optimize the kernel for use on UV based
209 systems, but the resulting kernel binary will not run on other
210 types of ia64 systems. If you have an SGI UV system, it's safe
211 to select this option. If in doubt, select ia64 generic support
222 prompt "Processor type"
228 Select your IA-64 processor type. The default is Itanium.
229 This choice is safe for all IA-64 systems, but may not perform
230 optimally on systems with, say, Itanium 2 or newer processors.
235 Select this to configure for an Itanium 2 (McKinley) processor.
240 prompt "Kernel page size"
241 default IA64_PAGE_SIZE_16KB
243 config IA64_PAGE_SIZE_4KB
246 This lets you select the page size of the kernel. For best IA-64
247 performance, a page size of 8KB or 16KB is recommended. For best
248 IA-32 compatibility, a page size of 4KB should be selected (the vast
249 majority of IA-32 binaries work perfectly fine with a larger page
250 size). For Itanium 2 or newer systems, a page size of 64KB can also
253 4KB For best IA-32 compatibility
254 8KB For best IA-64 performance
255 16KB For best IA-64 performance
256 64KB Requires Itanium 2 or newer processor.
258 If you don't know what to do, choose 16KB.
260 config IA64_PAGE_SIZE_8KB
263 config IA64_PAGE_SIZE_16KB
266 config IA64_PAGE_SIZE_64KB
278 source kernel/Kconfig.hz
286 # align cache-sensitive data to 128 bytes
287 config IA64_L1_CACHE_SHIFT
289 default "7" if MCKINLEY
290 default "6" if ITANIUM
293 bool "Cyclone (EXA) Time Source support"
295 Say Y here to enable support for IBM EXA Cyclone time source.
296 If you're unsure, answer N.
300 depends on !IA64_HP_SIM
303 config FORCE_MAX_ZONEORDER
304 int "MAX_ORDER (11 - 17)" if !HUGETLB_PAGE
305 range 11 17 if !HUGETLB_PAGE
306 default "17" if HUGETLB_PAGE
310 bool "Symmetric multi-processing support"
312 This enables support for systems with more than one CPU. If you have
313 a system with only one CPU, say N. If you have a system with more
316 If you say N here, the kernel will run on single and multiprocessor
317 systems, but will use only one CPU of a multiprocessor system. If
318 you say Y here, the kernel will run on many, but not all,
319 single processor systems. On a single processor system, the kernel
320 will run faster if you say N here.
322 See also the SMP-HOWTO available at
323 <http://www.tldp.org/docs.html#howto>.
325 If you don't know what to do here, say N.
328 int "Maximum number of CPUs (2-4096)"
333 You should set this to the number of CPUs in your system, but
334 keep in mind that a kernel compiled for, e.g., 2 CPUs will boot but
335 only use 2 CPUs on a >2 CPU system. Setting this to a value larger
336 than 64 will cause the use of a CPU mask array, causing a small
340 bool "Support for hot-pluggable CPUs"
344 Say Y here to experiment with turning CPUs off and on. CPUs
345 can be controlled through /sys/devices/system/cpu/cpu#.
346 Say N if you want to disable CPU hotplug.
348 config ARCH_ENABLE_MEMORY_HOTPLUG
351 config ARCH_ENABLE_MEMORY_HOTREMOVE
355 bool "SMT scheduler support"
358 Improves the CPU scheduler's decision making when dealing with
359 Intel IA64 chips with MultiThreading at a cost of slightly increased
360 overhead in some places. If unsure say N here.
362 config PERMIT_BSP_REMOVE
363 bool "Support removal of Bootstrap Processor"
364 depends on HOTPLUG_CPU
367 Say Y here if your platform SAL will support removal of BSP with HOTPLUG_CPU
370 config FORCE_CPEI_RETARGET
371 bool "Force assumption that CPEI can be re-targeted"
372 depends on PERMIT_BSP_REMOVE
375 Say Y if you need to force the assumption that CPEI can be re-targeted to
376 any cpu in the system. This hint is available via ACPI 3.0 specifications.
377 Tiger4 systems are capable of re-directing CPEI to any CPU other than BSP.
378 This option it useful to enable this feature on older BIOS's as well.
379 You can also enable this by using boot command line option force_cpei=1.
381 source "kernel/Kconfig.preempt"
385 config ARCH_SELECT_MEMORY_MODEL
388 config ARCH_DISCONTIGMEM_ENABLE
391 Say Y to support efficient handling of discontiguous physical memory,
392 for architectures which are either NUMA (Non-Uniform Memory Access)
393 or have huge holes in the physical address space for other reasons.
394 See <file:Documentation/vm/numa> for more.
396 config ARCH_FLATMEM_ENABLE
399 config ARCH_SPARSEMEM_ENABLE
401 depends on ARCH_DISCONTIGMEM_ENABLE
402 select SPARSEMEM_VMEMMAP_ENABLE
404 config ARCH_DISCONTIGMEM_DEFAULT
405 def_bool y if (IA64_SGI_SN2 || IA64_GENERIC || IA64_HP_ZX1 || IA64_HP_ZX1_SWIOTLB)
406 depends on ARCH_DISCONTIGMEM_ENABLE
410 depends on !IA64_HP_SIM && !FLATMEM
411 default y if IA64_SGI_SN2
412 select ACPI_NUMA if ACPI
414 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
415 Access). This option is for configuring high-end multiprocessor
416 server systems. If in doubt, say N.
419 int "Max num nodes shift(3-10)"
422 depends on NEED_MULTIPLE_NODES
424 This option specifies the maximum number of nodes in your SSI system.
425 MAX_NUMNODES will be 2^(This value).
426 If in doubt, use the default.
428 # VIRTUAL_MEM_MAP and FLAT_NODE_MEM_MAP are functionally equivalent.
429 # VIRTUAL_MEM_MAP has been retained for historical reasons.
430 config VIRTUAL_MEM_MAP
431 bool "Virtual mem map"
432 depends on !SPARSEMEM
433 default y if !IA64_HP_SIM
435 Say Y to compile the kernel with support for a virtual mem map.
436 This code also only takes effect if a memory hole of greater than
437 1 Gb is found during boot. You must turn this option on if you
438 require the DISCONTIGMEM option for your machine. If you are
443 default y if VIRTUAL_MEM_MAP
445 config HAVE_ARCH_EARLY_PFN_TO_NID
446 def_bool NUMA && SPARSEMEM
448 config HAVE_ARCH_NODEDATA_EXTENSION
452 config USE_PERCPU_NUMA_NODE_ID
456 config HAVE_MEMORYLESS_NODES
459 config ARCH_PROC_KCORE_TEXT
461 depends on PROC_KCORE
463 config IA64_MCA_RECOVERY
464 tristate "MCA recovery from errors other than TLB."
467 bool "Performance monitor support"
469 Selects whether support for the IA-64 performance monitor hardware
470 is included in the kernel. This makes some kernel data-structures a
471 little bigger and slows down execution a bit, but it is generally
472 a good idea to turn this on. If you're unsure, say Y.
475 tristate "/proc/pal support"
477 If you say Y here, you are able to get PAL (Processor Abstraction
478 Layer) information in /proc/pal. This contains useful information
479 about the processors in your systems, such as cache and TLB sizes
480 and the PAL firmware version in use.
482 To use this option, you have to ensure that the "/proc file system
483 support" (CONFIG_PROC_FS) is enabled, too.
485 config IA64_MC_ERR_INJECT
486 tristate "MC error injection support"
488 Adds support for MC error injection. If enabled, the kernel
489 will provide a sysfs interface for user applications to
490 call MC error injection PAL procedures to inject various errors.
491 This is a useful tool for MCA testing.
493 If you're unsure, do not select this option.
496 def_bool y if (IA64_SGI_SN2 || IA64_GENERIC)
499 bool "ESI (Extensible SAL Interface) support"
501 If you say Y here, support is built into the kernel to
502 make ESI calls. ESI calls are used to support vendor-specific
503 firmware extensions, such as the ability to inject memory-errors
504 for test-purposes. If you're unsure, say N.
506 config IA64_HP_AML_NFW
507 bool "Support ACPI AML calls to native firmware"
509 This driver installs a global ACPI Operation Region handler for
510 region 0xA1. AML methods can use this OpRegion to call arbitrary
511 native firmware functions. The driver installs the OpRegion
512 handler if there is an HPQ5001 device or if the user supplies
513 the "force" module parameter, e.g., with the "aml_nfw.force"
514 kernel command line option.
516 source "drivers/sn/Kconfig"
519 bool "kexec system call"
520 depends on !IA64_HP_SIM && (!SMP || HOTPLUG_CPU)
523 kexec is a system call that implements the ability to shutdown your
524 current kernel, and to start another kernel. It is like a reboot
525 but it is independent of the system firmware. And like a reboot
526 you can start any kernel with it, not just Linux.
528 The name comes from the similarity to the exec system call.
530 It is an ongoing process to be certain the hardware in a machine
531 is properly shutdown, so do not be surprised if this code does not
532 initially work for you. As of this writing the exact hardware
533 interface is strongly in flux, so no good recommendation can be
537 bool "kernel crash dumps"
538 depends on IA64_MCA_RECOVERY && !IA64_HP_SIM && (!SMP || HOTPLUG_CPU)
540 Generate crash dump after being started by kexec.
542 source "drivers/firmware/Kconfig"
544 source "fs/Kconfig.binfmt"
548 menu "Power management and ACPI options"
550 source "kernel/power/Kconfig"
552 source "drivers/acpi/Kconfig"
555 menu "CPU Frequency scaling"
556 source "drivers/cpufreq/Kconfig"
564 menu "Bus options (PCI, PCMCIA)"
569 Real IA-64 machines all have PCI/PCI-X/PCI Express busses. Say Y
570 here unless you are using a simulator without PCI support.
578 source "drivers/pci/Kconfig"
580 source "drivers/pcmcia/Kconfig"
588 source "drivers/Kconfig"
590 source "arch/ia64/hp/sim/Kconfig"
593 tristate "Memory special operations driver"
595 select IA64_UNCACHED_ALLOCATOR
597 If you have an ia64 and you want to enable memory special
598 operations support (formerly known as fetchop), say Y here,
603 source "arch/ia64/Kconfig.debug"
605 source "security/Kconfig"
607 source "crypto/Kconfig"
612 def_bool (IA64_HP_ZX1 || IA64_HP_ZX1_SWIOTLB || IA64_GENERIC || SWIOTLB)