2 # For a description of the syntax of this configuration file,
3 # see Documentation/kbuild/kconfig-language.txt.
6 mainmenu "IA-64 Linux Kernel Configuration"
10 menu "Processor type and features"
14 select PCI if (!IA64_HP_SIM)
15 select ACPI if (!IA64_HP_SIM)
16 select PM if (!IA64_HP_SIM)
17 select ARCH_SUPPORTS_MSI
20 The Itanium Processor Family is Intel's 64-bit successor to
21 the 32-bit X86 line. The IA-64 Linux project has a home
22 page at <http://www.linuxia64.org/> and a mailing list at
23 <linux-ia64@vger.kernel.org>.
27 select ATA_NONSTANDARD if ATA
32 depends on !IA64_SGI_SN2
45 config RWSEM_XCHGADD_ALGORITHM
49 config ARCH_HAS_ILOG2_U32
53 config ARCH_HAS_ILOG2_U64
57 config GENERIC_FIND_NEXT_BIT
61 config GENERIC_CALIBRATE_DELAY
69 config GENERIC_TIME_VSYSCALL
85 config SCHED_NO_NO_OMIT_FRAME_POINTER
89 config IA64_UNCACHED_ALLOCATOR
91 select GENERIC_ALLOCATOR
107 This selects the system type of your hardware. A "generic" kernel
108 will run on any supported IA-64 system. However, if you configure
109 a kernel for your specific system, it will be faster and smaller.
111 generic For any supported IA-64 system
112 DIG-compliant For DIG ("Developer's Interface Guide") compliant systems
113 HP-zx1/sx1000 For HP systems
114 HP-zx1/sx1000+swiotlb For HP systems with (broken) DMA-constrained devices.
115 SGI-SN2 For SGI Altix systems
116 Ski-simulator For the HP simulator <http://www.hpl.hp.com/research/linux/ski/>
118 If you don't know what to do, choose "generic".
127 Build a kernel that runs on HP zx1 and sx1000 systems. This adds
128 support for the HP I/O MMU.
130 config IA64_HP_ZX1_SWIOTLB
131 bool "HP-zx1/sx1000 with software I/O TLB"
134 Build a kernel that runs on HP zx1 and sx1000 systems even when they
135 have broken PCI devices which cannot DMA to full 32 bits. Apart
136 from support for the HP I/O MMU, this includes support for the software
137 I/O TLB, which allows supporting the broken devices at the expense of
138 wasting some kernel memory (about 2MB by default).
143 Selecting this option will optimize the kernel for use on sn2 based
144 systems, but the resulting kernel binary will not run on other
145 types of ia64 systems. If you have an SGI Altix system, it's safe
146 to select this option. If in doubt, select ia64 generic support
156 prompt "Processor type"
162 Select your IA-64 processor type. The default is Itanium.
163 This choice is safe for all IA-64 systems, but may not perform
164 optimally on systems with, say, Itanium 2 or newer processors.
169 Select this to configure for an Itanium 2 (McKinley) processor.
174 prompt "Kernel page size"
175 default IA64_PAGE_SIZE_16KB
177 config IA64_PAGE_SIZE_4KB
180 This lets you select the page size of the kernel. For best IA-64
181 performance, a page size of 8KB or 16KB is recommended. For best
182 IA-32 compatibility, a page size of 4KB should be selected (the vast
183 majority of IA-32 binaries work perfectly fine with a larger page
184 size). For Itanium 2 or newer systems, a page size of 64KB can also
187 4KB For best IA-32 compatibility
188 8KB For best IA-64 performance
189 16KB For best IA-64 performance
190 64KB Requires Itanium 2 or newer processor.
192 If you don't know what to do, choose 16KB.
194 config IA64_PAGE_SIZE_8KB
197 config IA64_PAGE_SIZE_16KB
200 config IA64_PAGE_SIZE_64KB
207 prompt "Page Table Levels"
214 depends on !IA64_PAGE_SIZE_64KB
219 source kernel/Kconfig.hz
226 # align cache-sensitive data to 128 bytes
227 config IA64_L1_CACHE_SHIFT
229 default "7" if MCKINLEY
230 default "6" if ITANIUM
233 bool "Cyclone (EXA) Time Source support"
235 Say Y here to enable support for IBM EXA Cyclone time source.
236 If you're unsure, answer N.
240 depends on !IA64_HP_SIM
243 config IA64_SGI_SN_XP
244 tristate "Support communication between SGI SSIs"
245 depends on IA64_GENERIC || IA64_SGI_SN2
246 select IA64_UNCACHED_ALLOCATOR
248 An SGI machine can be divided into multiple Single System
249 Images which act independently of each other and have
250 hardware based memory protection from the others. Enabling
251 this feature will allow for direct communication between SSIs
252 based on a network adapter and DMA messaging.
254 config FORCE_MAX_ZONEORDER
255 int "MAX_ORDER (11 - 17)" if !HUGETLB_PAGE
256 range 11 17 if !HUGETLB_PAGE
257 default "17" if HUGETLB_PAGE
261 bool "Symmetric multi-processing support"
263 This enables support for systems with more than one CPU. If you have
264 a system with only one CPU, say N. If you have a system with more
267 If you say N here, the kernel will run on single and multiprocessor
268 systems, but will use only one CPU of a multiprocessor system. If
269 you say Y here, the kernel will run on many, but not all,
270 single processor systems. On a single processor system, the kernel
271 will run faster if you say N here.
273 See also the <file:Documentation/smp.txt> and the SMP-HOWTO
274 available at <http://www.tldp.org/docs.html#howto>.
276 If you don't know what to do here, say N.
279 int "Maximum number of CPUs (2-1024)"
284 You should set this to the number of CPUs in your system, but
285 keep in mind that a kernel compiled for, e.g., 2 CPUs will boot but
286 only use 2 CPUs on a >2 CPU system. Setting this to a value larger
287 than 64 will cause the use of a CPU mask array, causing a small
291 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
292 depends on SMP && EXPERIMENTAL
296 Say Y here to experiment with turning CPUs off and on. CPUs
297 can be controlled through /sys/devices/system/cpu/cpu#.
298 Say N if you want to disable CPU hotplug.
300 config ARCH_ENABLE_MEMORY_HOTPLUG
304 bool "SMT scheduler support"
307 Improves the CPU scheduler's decision making when dealing with
308 Intel IA64 chips with MultiThreading at a cost of slightly increased
309 overhead in some places. If unsure say N here.
311 config PERMIT_BSP_REMOVE
312 bool "Support removal of Bootstrap Processor"
313 depends on HOTPLUG_CPU
316 Say Y here if your platform SAL will support removal of BSP with HOTPLUG_CPU
319 config FORCE_CPEI_RETARGET
320 bool "Force assumption that CPEI can be re-targetted"
321 depends on PERMIT_BSP_REMOVE
324 Say Y if you need to force the assumption that CPEI can be re-targetted to
325 any cpu in the system. This hint is available via ACPI 3.0 specifications.
326 Tiger4 systems are capable of re-directing CPEI to any CPU other than BSP.
327 This option it useful to enable this feature on older BIOS's as well.
328 You can also enable this by using boot command line option force_cpei=1.
330 source "kernel/Kconfig.preempt"
334 config ARCH_SELECT_MEMORY_MODEL
337 config ARCH_DISCONTIGMEM_ENABLE
340 Say Y to support efficient handling of discontiguous physical memory,
341 for architectures which are either NUMA (Non-Uniform Memory Access)
342 or have huge holes in the physical address space for other reasons.
343 See <file:Documentation/vm/numa> for more.
345 config ARCH_FLATMEM_ENABLE
348 config ARCH_SPARSEMEM_ENABLE
350 depends on ARCH_DISCONTIGMEM_ENABLE
351 select SPARSEMEM_VMEMMAP_ENABLE
353 config ARCH_DISCONTIGMEM_DEFAULT
354 def_bool y if (IA64_SGI_SN2 || IA64_GENERIC || IA64_HP_ZX1 || IA64_HP_ZX1_SWIOTLB)
355 depends on ARCH_DISCONTIGMEM_ENABLE
359 depends on !IA64_HP_SIM && !FLATMEM
360 default y if IA64_SGI_SN2
361 select ACPI_NUMA if ACPI
363 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
364 Access). This option is for configuring high-end multiprocessor
365 server systems. If in doubt, say N.
368 int "Max num nodes shift(3-10)"
371 depends on NEED_MULTIPLE_NODES
373 This option specifies the maximum number of nodes in your SSI system.
374 MAX_NUMNODES will be 2^(This value).
375 If in doubt, use the default.
377 config ARCH_POPULATES_NODE_MAP
380 # VIRTUAL_MEM_MAP and FLAT_NODE_MEM_MAP are functionally equivalent.
381 # VIRTUAL_MEM_MAP has been retained for historical reasons.
382 config VIRTUAL_MEM_MAP
383 bool "Virtual mem map"
384 depends on !SPARSEMEM
385 default y if !IA64_HP_SIM
387 Say Y to compile the kernel with support for a virtual mem map.
388 This code also only takes effect if a memory hole of greater than
389 1 Gb is found during boot. You must turn this option on if you
390 require the DISCONTIGMEM option for your machine. If you are
395 default y if VIRTUAL_MEM_MAP
397 config HAVE_ARCH_EARLY_PFN_TO_NID
399 depends on NEED_MULTIPLE_NODES
401 config HAVE_ARCH_NODEDATA_EXTENSION
406 bool "Support for Linux/x86 binaries"
408 IA-64 processors can execute IA-32 (X86) instructions. By
409 saying Y here, the kernel will include IA-32 system call
410 emulation support which makes it possible to transparently
411 run IA-32 Linux binaries on an IA-64 Linux system.
416 depends on IA32_SUPPORT
419 config COMPAT_FOR_U64_ALIGNMENT
422 config IA64_MCA_RECOVERY
423 tristate "MCA recovery from errors other than TLB."
426 bool "Performance monitor support"
428 Selects whether support for the IA-64 performance monitor hardware
429 is included in the kernel. This makes some kernel data-structures a
430 little bigger and slows down execution a bit, but it is generally
431 a good idea to turn this on. If you're unsure, say Y.
434 tristate "/proc/pal support"
436 If you say Y here, you are able to get PAL (Processor Abstraction
437 Layer) information in /proc/pal. This contains useful information
438 about the processors in your systems, such as cache and TLB sizes
439 and the PAL firmware version in use.
441 To use this option, you have to ensure that the "/proc file system
442 support" (CONFIG_PROC_FS) is enabled, too.
444 config IA64_MC_ERR_INJECT
445 tristate "MC error injection support"
447 Selets whether support for MC error injection. By enabling the
448 support, kernel provide sysfs interface for user application to
449 call MC error injection PAL procedure to inject various errors.
450 This is a useful tool for MCA testing.
452 If you're unsure, do not select this option.
455 def_bool y if (IA64_SGI_SN2 || IA64_GENERIC)
458 bool "ESI (Extensible SAL Interface) support"
460 If you say Y here, support is built into the kernel to
461 make ESI calls. ESI calls are used to support vendor-specific
462 firmware extensions, such as the ability to inject memory-errors
463 for test-purposes. If you're unsure, say N.
465 config IA64_HP_AML_NFW
466 bool "Support ACPI AML calls to native firmware"
468 This driver installs a global ACPI Operation Region handler for
469 region 0xA1. AML methods can use this OpRegion to call arbitrary
470 native firmware functions. The driver installs the OpRegion
471 handler if there is an HPQ5001 device or if the user supplies
472 the "force" module parameter, e.g., with the "aml_nfw.force"
473 kernel command line option.
475 source "drivers/sn/Kconfig"
478 bool "kexec system call (EXPERIMENTAL)"
479 depends on EXPERIMENTAL && !IA64_HP_SIM && (!SMP || HOTPLUG_CPU)
481 kexec is a system call that implements the ability to shutdown your
482 current kernel, and to start another kernel. It is like a reboot
483 but it is independent of the system firmware. And like a reboot
484 you can start any kernel with it, not just Linux.
486 The name comes from the similiarity to the exec system call.
488 It is an ongoing process to be certain the hardware in a machine
489 is properly shutdown, so do not be surprised if this code does not
490 initially work for you. It may help to enable device hotplugging
491 support. As of this writing the exact hardware interface is
492 strongly in flux, so no good recommendation can be made.
495 bool "kernel crash dumps (EXPERIMENTAL)"
496 depends on EXPERIMENTAL && IA64_MCA_RECOVERY && !IA64_HP_SIM && (!SMP || HOTPLUG_CPU)
498 Generate crash dump after being started by kexec.
500 source "drivers/firmware/Kconfig"
502 source "fs/Kconfig.binfmt"
506 menu "Power management and ACPI"
508 source "kernel/power/Kconfig"
510 source "drivers/acpi/Kconfig"
514 source "arch/ia64/kernel/cpufreq/Kconfig"
522 menu "Bus options (PCI, PCMCIA)"
527 Real IA-64 machines all have PCI/PCI-X/PCI Express busses. Say Y
528 here unless you are using a simulator without PCI support.
536 source "drivers/pci/pcie/Kconfig"
538 source "drivers/pci/Kconfig"
540 source "drivers/pci/hotplug/Kconfig"
542 source "drivers/pcmcia/Kconfig"
550 source "drivers/Kconfig"
553 tristate "Memory special operations driver"
555 select IA64_UNCACHED_ALLOCATOR
557 If you have an ia64 and you want to enable memory special
558 operations support (formerly known as fetchop), say Y here,
566 # Use the generic interrupt handling code in kernel/irq/:
568 config GENERIC_HARDIRQS
572 config GENERIC_IRQ_PROBE
576 config GENERIC_PENDING_IRQ
578 depends on GENERIC_HARDIRQS && SMP
585 source "arch/ia64/hp/sim/Kconfig"
587 menu "Instrumentation Support"
588 depends on EXPERIMENTAL
590 source "arch/ia64/oprofile/Kconfig"
594 depends on KALLSYMS && MODULES
596 Kprobes allows you to trap at almost any kernel address and
597 execute a callback function. register_kprobe() establishes
598 a probepoint and specifies the callback. Kprobes is useful
599 for kernel debugging, non-intrusive instrumentation and testing.
600 If in doubt, say "N".
603 source "arch/ia64/Kconfig.debug"
605 source "security/Kconfig"
607 source "crypto/Kconfig"