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
21 The Itanium Processor Family is Intel's 64-bit successor to
22 the 32-bit X86 line. The IA-64 Linux project has a home
23 page at <http://www.linuxia64.org/> and a mailing list at
24 <linux-ia64@vger.kernel.org>.
28 select ATA_NONSTANDARD if ATA
33 depends on !IA64_SGI_SN2
46 config GENERIC_LOCKBREAK
49 depends on SMP && PREEMPT
51 config RWSEM_XCHGADD_ALGORITHM
55 config ARCH_HAS_ILOG2_U32
59 config ARCH_HAS_ILOG2_U64
63 config HUGETLB_PAGE_SIZE_VARIABLE
65 depends on HUGETLB_PAGE
68 config GENERIC_FIND_NEXT_BIT
72 config GENERIC_CALIBRATE_DELAY
80 config GENERIC_TIME_VSYSCALL
84 config HAVE_SETUP_PER_CPU_AREA
99 config SCHED_NO_NO_OMIT_FRAME_POINTER
103 config IA64_UNCACHED_ALLOCATOR
105 select GENERIC_ALLOCATOR
121 This selects the system type of your hardware. A "generic" kernel
122 will run on any supported IA-64 system. However, if you configure
123 a kernel for your specific system, it will be faster and smaller.
125 generic For any supported IA-64 system
126 DIG-compliant For DIG ("Developer's Interface Guide") compliant systems
127 HP-zx1/sx1000 For HP systems
128 HP-zx1/sx1000+swiotlb For HP systems with (broken) DMA-constrained devices.
129 SGI-SN2 For SGI Altix systems
130 Ski-simulator For the HP simulator <http://www.hpl.hp.com/research/linux/ski/>
132 If you don't know what to do, choose "generic".
141 Build a kernel that runs on HP zx1 and sx1000 systems. This adds
142 support for the HP I/O MMU.
144 config IA64_HP_ZX1_SWIOTLB
145 bool "HP-zx1/sx1000 with software I/O TLB"
148 Build a kernel that runs on HP zx1 and sx1000 systems even when they
149 have broken PCI devices which cannot DMA to full 32 bits. Apart
150 from support for the HP I/O MMU, this includes support for the software
151 I/O TLB, which allows supporting the broken devices at the expense of
152 wasting some kernel memory (about 2MB by default).
157 Selecting this option will optimize the kernel for use on sn2 based
158 systems, but the resulting kernel binary will not run on other
159 types of ia64 systems. If you have an SGI Altix system, it's safe
160 to select this option. If in doubt, select ia64 generic support
170 prompt "Processor type"
176 Select your IA-64 processor type. The default is Itanium.
177 This choice is safe for all IA-64 systems, but may not perform
178 optimally on systems with, say, Itanium 2 or newer processors.
183 Select this to configure for an Itanium 2 (McKinley) processor.
188 prompt "Kernel page size"
189 default IA64_PAGE_SIZE_16KB
191 config IA64_PAGE_SIZE_4KB
194 This lets you select the page size of the kernel. For best IA-64
195 performance, a page size of 8KB or 16KB is recommended. For best
196 IA-32 compatibility, a page size of 4KB should be selected (the vast
197 majority of IA-32 binaries work perfectly fine with a larger page
198 size). For Itanium 2 or newer systems, a page size of 64KB can also
201 4KB For best IA-32 compatibility
202 8KB For best IA-64 performance
203 16KB For best IA-64 performance
204 64KB Requires Itanium 2 or newer processor.
206 If you don't know what to do, choose 16KB.
208 config IA64_PAGE_SIZE_8KB
211 config IA64_PAGE_SIZE_16KB
214 config IA64_PAGE_SIZE_64KB
221 prompt "Page Table Levels"
228 depends on !IA64_PAGE_SIZE_64KB
233 source kernel/Kconfig.hz
240 # align cache-sensitive data to 128 bytes
241 config IA64_L1_CACHE_SHIFT
243 default "7" if MCKINLEY
244 default "6" if ITANIUM
247 bool "Cyclone (EXA) Time Source support"
249 Say Y here to enable support for IBM EXA Cyclone time source.
250 If you're unsure, answer N.
254 depends on !IA64_HP_SIM
257 config IA64_SGI_SN_XP
258 tristate "Support communication between SGI SSIs"
259 depends on IA64_GENERIC || IA64_SGI_SN2
260 select IA64_UNCACHED_ALLOCATOR
262 An SGI machine can be divided into multiple Single System
263 Images which act independently of each other and have
264 hardware based memory protection from the others. Enabling
265 this feature will allow for direct communication between SSIs
266 based on a network adapter and DMA messaging.
268 config FORCE_MAX_ZONEORDER
269 int "MAX_ORDER (11 - 17)" if !HUGETLB_PAGE
270 range 11 17 if !HUGETLB_PAGE
271 default "17" if HUGETLB_PAGE
275 bool "Symmetric multi-processing support"
277 This enables support for systems with more than one CPU. If you have
278 a system with only one CPU, say N. If you have a system with more
281 If you say N here, the kernel will run on single and multiprocessor
282 systems, but will use only one CPU of a multiprocessor system. If
283 you say Y here, the kernel will run on many, but not all,
284 single processor systems. On a single processor system, the kernel
285 will run faster if you say N here.
287 See also the <file:Documentation/smp.txt> and the SMP-HOWTO
288 available at <http://www.tldp.org/docs.html#howto>.
290 If you don't know what to do here, say N.
293 int "Maximum number of CPUs (2-1024)"
298 You should set this to the number of CPUs in your system, but
299 keep in mind that a kernel compiled for, e.g., 2 CPUs will boot but
300 only use 2 CPUs on a >2 CPU system. Setting this to a value larger
301 than 64 will cause the use of a CPU mask array, causing a small
305 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
306 depends on SMP && EXPERIMENTAL
310 Say Y here to experiment with turning CPUs off and on. CPUs
311 can be controlled through /sys/devices/system/cpu/cpu#.
312 Say N if you want to disable CPU hotplug.
314 config ARCH_ENABLE_MEMORY_HOTPLUG
317 config ARCH_ENABLE_MEMORY_HOTREMOVE
321 bool "SMT scheduler support"
324 Improves the CPU scheduler's decision making when dealing with
325 Intel IA64 chips with MultiThreading at a cost of slightly increased
326 overhead in some places. If unsure say N here.
328 config PERMIT_BSP_REMOVE
329 bool "Support removal of Bootstrap Processor"
330 depends on HOTPLUG_CPU
333 Say Y here if your platform SAL will support removal of BSP with HOTPLUG_CPU
336 config FORCE_CPEI_RETARGET
337 bool "Force assumption that CPEI can be re-targetted"
338 depends on PERMIT_BSP_REMOVE
341 Say Y if you need to force the assumption that CPEI can be re-targetted to
342 any cpu in the system. This hint is available via ACPI 3.0 specifications.
343 Tiger4 systems are capable of re-directing CPEI to any CPU other than BSP.
344 This option it useful to enable this feature on older BIOS's as well.
345 You can also enable this by using boot command line option force_cpei=1.
347 source "kernel/Kconfig.preempt"
351 config ARCH_SELECT_MEMORY_MODEL
354 config ARCH_DISCONTIGMEM_ENABLE
357 Say Y to support efficient handling of discontiguous physical memory,
358 for architectures which are either NUMA (Non-Uniform Memory Access)
359 or have huge holes in the physical address space for other reasons.
360 See <file:Documentation/vm/numa> for more.
362 config ARCH_FLATMEM_ENABLE
365 config ARCH_SPARSEMEM_ENABLE
367 depends on ARCH_DISCONTIGMEM_ENABLE
368 select SPARSEMEM_VMEMMAP_ENABLE
370 config ARCH_DISCONTIGMEM_DEFAULT
371 def_bool y if (IA64_SGI_SN2 || IA64_GENERIC || IA64_HP_ZX1 || IA64_HP_ZX1_SWIOTLB)
372 depends on ARCH_DISCONTIGMEM_ENABLE
376 depends on !IA64_HP_SIM && !FLATMEM
377 default y if IA64_SGI_SN2
378 select ACPI_NUMA if ACPI
380 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
381 Access). This option is for configuring high-end multiprocessor
382 server systems. If in doubt, say N.
385 int "Max num nodes shift(3-10)"
388 depends on NEED_MULTIPLE_NODES
390 This option specifies the maximum number of nodes in your SSI system.
391 MAX_NUMNODES will be 2^(This value).
392 If in doubt, use the default.
394 config ARCH_POPULATES_NODE_MAP
397 # VIRTUAL_MEM_MAP and FLAT_NODE_MEM_MAP are functionally equivalent.
398 # VIRTUAL_MEM_MAP has been retained for historical reasons.
399 config VIRTUAL_MEM_MAP
400 bool "Virtual mem map"
401 depends on !SPARSEMEM
402 default y if !IA64_HP_SIM
404 Say Y to compile the kernel with support for a virtual mem map.
405 This code also only takes effect if a memory hole of greater than
406 1 Gb is found during boot. You must turn this option on if you
407 require the DISCONTIGMEM option for your machine. If you are
412 default y if VIRTUAL_MEM_MAP
414 config HAVE_ARCH_EARLY_PFN_TO_NID
416 depends on NEED_MULTIPLE_NODES
418 config HAVE_ARCH_NODEDATA_EXTENSION
423 bool "Support for Linux/x86 binaries"
425 IA-64 processors can execute IA-32 (X86) instructions. By
426 saying Y here, the kernel will include IA-32 system call
427 emulation support which makes it possible to transparently
428 run IA-32 Linux binaries on an IA-64 Linux system.
433 depends on IA32_SUPPORT
436 config COMPAT_FOR_U64_ALIGNMENT
439 config IA64_MCA_RECOVERY
440 tristate "MCA recovery from errors other than TLB."
443 bool "Performance monitor support"
445 Selects whether support for the IA-64 performance monitor hardware
446 is included in the kernel. This makes some kernel data-structures a
447 little bigger and slows down execution a bit, but it is generally
448 a good idea to turn this on. If you're unsure, say Y.
451 tristate "/proc/pal support"
453 If you say Y here, you are able to get PAL (Processor Abstraction
454 Layer) information in /proc/pal. This contains useful information
455 about the processors in your systems, such as cache and TLB sizes
456 and the PAL firmware version in use.
458 To use this option, you have to ensure that the "/proc file system
459 support" (CONFIG_PROC_FS) is enabled, too.
461 config IA64_MC_ERR_INJECT
462 tristate "MC error injection support"
464 Adds support for MC error injection. If enabled, the kernel
465 will provide a sysfs interface for user applications to
466 call MC error injection PAL procedures to inject various errors.
467 This is a useful tool for MCA testing.
469 If you're unsure, do not select this option.
472 def_bool y if (IA64_SGI_SN2 || IA64_GENERIC)
475 bool "ESI (Extensible SAL Interface) support"
477 If you say Y here, support is built into the kernel to
478 make ESI calls. ESI calls are used to support vendor-specific
479 firmware extensions, such as the ability to inject memory-errors
480 for test-purposes. If you're unsure, say N.
482 config IA64_HP_AML_NFW
483 bool "Support ACPI AML calls to native firmware"
485 This driver installs a global ACPI Operation Region handler for
486 region 0xA1. AML methods can use this OpRegion to call arbitrary
487 native firmware functions. The driver installs the OpRegion
488 handler if there is an HPQ5001 device or if the user supplies
489 the "force" module parameter, e.g., with the "aml_nfw.force"
490 kernel command line option.
492 source "drivers/sn/Kconfig"
495 bool "kexec system call (EXPERIMENTAL)"
496 depends on EXPERIMENTAL && !IA64_HP_SIM && (!SMP || HOTPLUG_CPU)
498 kexec is a system call that implements the ability to shutdown your
499 current kernel, and to start another kernel. It is like a reboot
500 but it is independent of the system firmware. And like a reboot
501 you can start any kernel with it, not just Linux.
503 The name comes from the similarity to the exec system call.
505 It is an ongoing process to be certain the hardware in a machine
506 is properly shutdown, so do not be surprised if this code does not
507 initially work for you. It may help to enable device hotplugging
508 support. As of this writing the exact hardware interface is
509 strongly in flux, so no good recommendation can be made.
512 bool "kernel crash dumps (EXPERIMENTAL)"
513 depends on EXPERIMENTAL && IA64_MCA_RECOVERY && !IA64_HP_SIM && (!SMP || HOTPLUG_CPU)
515 Generate crash dump after being started by kexec.
517 source "drivers/firmware/Kconfig"
519 source "fs/Kconfig.binfmt"
523 menu "Power management and ACPI"
525 source "kernel/power/Kconfig"
527 source "drivers/acpi/Kconfig"
531 source "arch/ia64/kernel/cpufreq/Kconfig"
539 menu "Bus options (PCI, PCMCIA)"
544 Real IA-64 machines all have PCI/PCI-X/PCI Express busses. Say Y
545 here unless you are using a simulator without PCI support.
553 source "drivers/pci/pcie/Kconfig"
555 source "drivers/pci/Kconfig"
557 source "drivers/pci/hotplug/Kconfig"
559 source "drivers/pcmcia/Kconfig"
567 source "drivers/Kconfig"
570 tristate "Memory special operations driver"
572 select IA64_UNCACHED_ALLOCATOR
574 If you have an ia64 and you want to enable memory special
575 operations support (formerly known as fetchop), say Y here,
583 # Use the generic interrupt handling code in kernel/irq/:
585 config GENERIC_HARDIRQS
589 config GENERIC_IRQ_PROBE
593 config GENERIC_PENDING_IRQ
595 depends on GENERIC_HARDIRQS && SMP
602 source "arch/ia64/hp/sim/Kconfig"
604 source "kernel/Kconfig.instrumentation"
606 source "arch/ia64/Kconfig.debug"
608 source "security/Kconfig"
610 source "crypto/Kconfig"