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 HUGETLB_PAGE_SIZE_VARIABLE
59 depends on HUGETLB_PAGE
62 config GENERIC_FIND_NEXT_BIT
66 config GENERIC_CALIBRATE_DELAY
74 config GENERIC_TIME_VSYSCALL
90 config SCHED_NO_NO_OMIT_FRAME_POINTER
94 config IA64_UNCACHED_ALLOCATOR
96 select GENERIC_ALLOCATOR
112 This selects the system type of your hardware. A "generic" kernel
113 will run on any supported IA-64 system. However, if you configure
114 a kernel for your specific system, it will be faster and smaller.
116 generic For any supported IA-64 system
117 DIG-compliant For DIG ("Developer's Interface Guide") compliant systems
118 HP-zx1/sx1000 For HP systems
119 HP-zx1/sx1000+swiotlb For HP systems with (broken) DMA-constrained devices.
120 SGI-SN2 For SGI Altix systems
121 Ski-simulator For the HP simulator <http://www.hpl.hp.com/research/linux/ski/>
123 If you don't know what to do, choose "generic".
132 Build a kernel that runs on HP zx1 and sx1000 systems. This adds
133 support for the HP I/O MMU.
135 config IA64_HP_ZX1_SWIOTLB
136 bool "HP-zx1/sx1000 with software I/O TLB"
139 Build a kernel that runs on HP zx1 and sx1000 systems even when they
140 have broken PCI devices which cannot DMA to full 32 bits. Apart
141 from support for the HP I/O MMU, this includes support for the software
142 I/O TLB, which allows supporting the broken devices at the expense of
143 wasting some kernel memory (about 2MB by default).
148 Selecting this option will optimize the kernel for use on sn2 based
149 systems, but the resulting kernel binary will not run on other
150 types of ia64 systems. If you have an SGI Altix system, it's safe
151 to select this option. If in doubt, select ia64 generic support
161 prompt "Processor type"
167 Select your IA-64 processor type. The default is Itanium.
168 This choice is safe for all IA-64 systems, but may not perform
169 optimally on systems with, say, Itanium 2 or newer processors.
174 Select this to configure for an Itanium 2 (McKinley) processor.
179 prompt "Kernel page size"
180 default IA64_PAGE_SIZE_16KB
182 config IA64_PAGE_SIZE_4KB
185 This lets you select the page size of the kernel. For best IA-64
186 performance, a page size of 8KB or 16KB is recommended. For best
187 IA-32 compatibility, a page size of 4KB should be selected (the vast
188 majority of IA-32 binaries work perfectly fine with a larger page
189 size). For Itanium 2 or newer systems, a page size of 64KB can also
192 4KB For best IA-32 compatibility
193 8KB For best IA-64 performance
194 16KB For best IA-64 performance
195 64KB Requires Itanium 2 or newer processor.
197 If you don't know what to do, choose 16KB.
199 config IA64_PAGE_SIZE_8KB
202 config IA64_PAGE_SIZE_16KB
205 config IA64_PAGE_SIZE_64KB
212 prompt "Page Table Levels"
219 depends on !IA64_PAGE_SIZE_64KB
224 source kernel/Kconfig.hz
231 # align cache-sensitive data to 128 bytes
232 config IA64_L1_CACHE_SHIFT
234 default "7" if MCKINLEY
235 default "6" if ITANIUM
238 bool "Cyclone (EXA) Time Source support"
240 Say Y here to enable support for IBM EXA Cyclone time source.
241 If you're unsure, answer N.
245 depends on !IA64_HP_SIM
248 config IA64_SGI_SN_XP
249 tristate "Support communication between SGI SSIs"
250 depends on IA64_GENERIC || IA64_SGI_SN2
251 select IA64_UNCACHED_ALLOCATOR
253 An SGI machine can be divided into multiple Single System
254 Images which act independently of each other and have
255 hardware based memory protection from the others. Enabling
256 this feature will allow for direct communication between SSIs
257 based on a network adapter and DMA messaging.
259 config FORCE_MAX_ZONEORDER
260 int "MAX_ORDER (11 - 17)" if !HUGETLB_PAGE
261 range 11 17 if !HUGETLB_PAGE
262 default "17" if HUGETLB_PAGE
266 bool "Symmetric multi-processing support"
268 This enables support for systems with more than one CPU. If you have
269 a system with only one CPU, say N. If you have a system with more
272 If you say N here, the kernel will run on single and multiprocessor
273 systems, but will use only one CPU of a multiprocessor system. If
274 you say Y here, the kernel will run on many, but not all,
275 single processor systems. On a single processor system, the kernel
276 will run faster if you say N here.
278 See also the <file:Documentation/smp.txt> and the SMP-HOWTO
279 available at <http://www.tldp.org/docs.html#howto>.
281 If you don't know what to do here, say N.
284 int "Maximum number of CPUs (2-1024)"
289 You should set this to the number of CPUs in your system, but
290 keep in mind that a kernel compiled for, e.g., 2 CPUs will boot but
291 only use 2 CPUs on a >2 CPU system. Setting this to a value larger
292 than 64 will cause the use of a CPU mask array, causing a small
296 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
297 depends on SMP && EXPERIMENTAL
301 Say Y here to experiment with turning CPUs off and on. CPUs
302 can be controlled through /sys/devices/system/cpu/cpu#.
303 Say N if you want to disable CPU hotplug.
305 config ARCH_ENABLE_MEMORY_HOTPLUG
308 config ARCH_ENABLE_MEMORY_HOTREMOVE
312 bool "SMT scheduler support"
315 Improves the CPU scheduler's decision making when dealing with
316 Intel IA64 chips with MultiThreading at a cost of slightly increased
317 overhead in some places. If unsure say N here.
319 config PERMIT_BSP_REMOVE
320 bool "Support removal of Bootstrap Processor"
321 depends on HOTPLUG_CPU
324 Say Y here if your platform SAL will support removal of BSP with HOTPLUG_CPU
327 config FORCE_CPEI_RETARGET
328 bool "Force assumption that CPEI can be re-targetted"
329 depends on PERMIT_BSP_REMOVE
332 Say Y if you need to force the assumption that CPEI can be re-targetted to
333 any cpu in the system. This hint is available via ACPI 3.0 specifications.
334 Tiger4 systems are capable of re-directing CPEI to any CPU other than BSP.
335 This option it useful to enable this feature on older BIOS's as well.
336 You can also enable this by using boot command line option force_cpei=1.
338 source "kernel/Kconfig.preempt"
342 config ARCH_SELECT_MEMORY_MODEL
345 config ARCH_DISCONTIGMEM_ENABLE
348 Say Y to support efficient handling of discontiguous physical memory,
349 for architectures which are either NUMA (Non-Uniform Memory Access)
350 or have huge holes in the physical address space for other reasons.
351 See <file:Documentation/vm/numa> for more.
353 config ARCH_FLATMEM_ENABLE
356 config ARCH_SPARSEMEM_ENABLE
358 depends on ARCH_DISCONTIGMEM_ENABLE
359 select SPARSEMEM_VMEMMAP_ENABLE
361 config ARCH_DISCONTIGMEM_DEFAULT
362 def_bool y if (IA64_SGI_SN2 || IA64_GENERIC || IA64_HP_ZX1 || IA64_HP_ZX1_SWIOTLB)
363 depends on ARCH_DISCONTIGMEM_ENABLE
367 depends on !IA64_HP_SIM && !FLATMEM
368 default y if IA64_SGI_SN2
369 select ACPI_NUMA if ACPI
371 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
372 Access). This option is for configuring high-end multiprocessor
373 server systems. If in doubt, say N.
376 int "Max num nodes shift(3-10)"
379 depends on NEED_MULTIPLE_NODES
381 This option specifies the maximum number of nodes in your SSI system.
382 MAX_NUMNODES will be 2^(This value).
383 If in doubt, use the default.
385 config ARCH_POPULATES_NODE_MAP
388 # VIRTUAL_MEM_MAP and FLAT_NODE_MEM_MAP are functionally equivalent.
389 # VIRTUAL_MEM_MAP has been retained for historical reasons.
390 config VIRTUAL_MEM_MAP
391 bool "Virtual mem map"
392 depends on !SPARSEMEM
393 default y if !IA64_HP_SIM
395 Say Y to compile the kernel with support for a virtual mem map.
396 This code also only takes effect if a memory hole of greater than
397 1 Gb is found during boot. You must turn this option on if you
398 require the DISCONTIGMEM option for your machine. If you are
403 default y if VIRTUAL_MEM_MAP
405 config HAVE_ARCH_EARLY_PFN_TO_NID
407 depends on NEED_MULTIPLE_NODES
409 config HAVE_ARCH_NODEDATA_EXTENSION
414 bool "Support for Linux/x86 binaries"
416 IA-64 processors can execute IA-32 (X86) instructions. By
417 saying Y here, the kernel will include IA-32 system call
418 emulation support which makes it possible to transparently
419 run IA-32 Linux binaries on an IA-64 Linux system.
424 depends on IA32_SUPPORT
427 config COMPAT_FOR_U64_ALIGNMENT
430 config IA64_MCA_RECOVERY
431 tristate "MCA recovery from errors other than TLB."
434 bool "Performance monitor support"
436 Selects whether support for the IA-64 performance monitor hardware
437 is included in the kernel. This makes some kernel data-structures a
438 little bigger and slows down execution a bit, but it is generally
439 a good idea to turn this on. If you're unsure, say Y.
442 tristate "/proc/pal support"
444 If you say Y here, you are able to get PAL (Processor Abstraction
445 Layer) information in /proc/pal. This contains useful information
446 about the processors in your systems, such as cache and TLB sizes
447 and the PAL firmware version in use.
449 To use this option, you have to ensure that the "/proc file system
450 support" (CONFIG_PROC_FS) is enabled, too.
452 config IA64_MC_ERR_INJECT
453 tristate "MC error injection support"
455 Adds support for MC error injection. If enabled, the kernel
456 will provide a sysfs interface for user applications to
457 call MC error injection PAL procedures to inject various errors.
458 This is a useful tool for MCA testing.
460 If you're unsure, do not select this option.
463 def_bool y if (IA64_SGI_SN2 || IA64_GENERIC)
466 bool "ESI (Extensible SAL Interface) support"
468 If you say Y here, support is built into the kernel to
469 make ESI calls. ESI calls are used to support vendor-specific
470 firmware extensions, such as the ability to inject memory-errors
471 for test-purposes. If you're unsure, say N.
473 config IA64_HP_AML_NFW
474 bool "Support ACPI AML calls to native firmware"
476 This driver installs a global ACPI Operation Region handler for
477 region 0xA1. AML methods can use this OpRegion to call arbitrary
478 native firmware functions. The driver installs the OpRegion
479 handler if there is an HPQ5001 device or if the user supplies
480 the "force" module parameter, e.g., with the "aml_nfw.force"
481 kernel command line option.
483 source "drivers/sn/Kconfig"
486 bool "kexec system call (EXPERIMENTAL)"
487 depends on EXPERIMENTAL && !IA64_HP_SIM && (!SMP || HOTPLUG_CPU)
489 kexec is a system call that implements the ability to shutdown your
490 current kernel, and to start another kernel. It is like a reboot
491 but it is independent of the system firmware. And like a reboot
492 you can start any kernel with it, not just Linux.
494 The name comes from the similarity to the exec system call.
496 It is an ongoing process to be certain the hardware in a machine
497 is properly shutdown, so do not be surprised if this code does not
498 initially work for you. It may help to enable device hotplugging
499 support. As of this writing the exact hardware interface is
500 strongly in flux, so no good recommendation can be made.
503 bool "kernel crash dumps (EXPERIMENTAL)"
504 depends on EXPERIMENTAL && IA64_MCA_RECOVERY && !IA64_HP_SIM && (!SMP || HOTPLUG_CPU)
506 Generate crash dump after being started by kexec.
508 source "drivers/firmware/Kconfig"
510 source "fs/Kconfig.binfmt"
514 menu "Power management and ACPI"
516 source "kernel/power/Kconfig"
518 source "drivers/acpi/Kconfig"
522 source "arch/ia64/kernel/cpufreq/Kconfig"
530 menu "Bus options (PCI, PCMCIA)"
535 Real IA-64 machines all have PCI/PCI-X/PCI Express busses. Say Y
536 here unless you are using a simulator without PCI support.
544 source "drivers/pci/pcie/Kconfig"
546 source "drivers/pci/Kconfig"
548 source "drivers/pci/hotplug/Kconfig"
550 source "drivers/pcmcia/Kconfig"
558 source "drivers/Kconfig"
561 tristate "Memory special operations driver"
563 select IA64_UNCACHED_ALLOCATOR
565 If you have an ia64 and you want to enable memory special
566 operations support (formerly known as fetchop), say Y here,
574 # Use the generic interrupt handling code in kernel/irq/:
576 config GENERIC_HARDIRQS
580 config GENERIC_IRQ_PROBE
584 config GENERIC_PENDING_IRQ
586 depends on GENERIC_HARDIRQS && SMP
593 source "arch/ia64/hp/sim/Kconfig"
595 source "kernel/Kconfig.instrumentation"
597 source "arch/ia64/Kconfig.debug"
599 source "security/Kconfig"
601 source "crypto/Kconfig"