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
23 The Itanium Processor Family is Intel's 64-bit successor to
24 the 32-bit X86 line. The IA-64 Linux project has a home
25 page at <http://www.linuxia64.org/> and a mailing list at
26 <linux-ia64@vger.kernel.org>.
30 select ATA_NONSTANDARD if ATA
35 depends on !IA64_SGI_SN2
48 config GENERIC_LOCKBREAK
51 depends on SMP && PREEMPT
53 config RWSEM_XCHGADD_ALGORITHM
57 config ARCH_HAS_ILOG2_U32
61 config ARCH_HAS_ILOG2_U64
65 config HUGETLB_PAGE_SIZE_VARIABLE
67 depends on HUGETLB_PAGE
70 config GENERIC_FIND_NEXT_BIT
74 config GENERIC_CALIBRATE_DELAY
82 config GENERIC_TIME_VSYSCALL
86 config HAVE_SETUP_PER_CPU_AREA
101 config SCHED_NO_NO_OMIT_FRAME_POINTER
105 config IA64_UNCACHED_ALLOCATOR
107 select GENERIC_ALLOCATOR
123 This selects the system type of your hardware. A "generic" kernel
124 will run on any supported IA-64 system. However, if you configure
125 a kernel for your specific system, it will be faster and smaller.
127 generic For any supported IA-64 system
128 DIG-compliant For DIG ("Developer's Interface Guide") compliant systems
129 HP-zx1/sx1000 For HP systems
130 HP-zx1/sx1000+swiotlb For HP systems with (broken) DMA-constrained devices.
131 SGI-SN2 For SGI Altix systems
132 Ski-simulator For the HP simulator <http://www.hpl.hp.com/research/linux/ski/>
134 If you don't know what to do, choose "generic".
143 Build a kernel that runs on HP zx1 and sx1000 systems. This adds
144 support for the HP I/O MMU.
146 config IA64_HP_ZX1_SWIOTLB
147 bool "HP-zx1/sx1000 with software I/O TLB"
150 Build a kernel that runs on HP zx1 and sx1000 systems even when they
151 have broken PCI devices which cannot DMA to full 32 bits. Apart
152 from support for the HP I/O MMU, this includes support for the software
153 I/O TLB, which allows supporting the broken devices at the expense of
154 wasting some kernel memory (about 2MB by default).
159 Selecting this option will optimize the kernel for use on sn2 based
160 systems, but the resulting kernel binary will not run on other
161 types of ia64 systems. If you have an SGI Altix system, it's safe
162 to select this option. If in doubt, select ia64 generic support
172 prompt "Processor type"
178 Select your IA-64 processor type. The default is Itanium.
179 This choice is safe for all IA-64 systems, but may not perform
180 optimally on systems with, say, Itanium 2 or newer processors.
185 Select this to configure for an Itanium 2 (McKinley) processor.
190 prompt "Kernel page size"
191 default IA64_PAGE_SIZE_16KB
193 config IA64_PAGE_SIZE_4KB
196 This lets you select the page size of the kernel. For best IA-64
197 performance, a page size of 8KB or 16KB is recommended. For best
198 IA-32 compatibility, a page size of 4KB should be selected (the vast
199 majority of IA-32 binaries work perfectly fine with a larger page
200 size). For Itanium 2 or newer systems, a page size of 64KB can also
203 4KB For best IA-32 compatibility
204 8KB For best IA-64 performance
205 16KB For best IA-64 performance
206 64KB Requires Itanium 2 or newer processor.
208 If you don't know what to do, choose 16KB.
210 config IA64_PAGE_SIZE_8KB
213 config IA64_PAGE_SIZE_16KB
216 config IA64_PAGE_SIZE_64KB
223 prompt "Page Table Levels"
230 depends on !IA64_PAGE_SIZE_64KB
235 source kernel/Kconfig.hz
242 # align cache-sensitive data to 128 bytes
243 config IA64_L1_CACHE_SHIFT
245 default "7" if MCKINLEY
246 default "6" if ITANIUM
249 bool "Cyclone (EXA) Time Source support"
251 Say Y here to enable support for IBM EXA Cyclone time source.
252 If you're unsure, answer N.
256 depends on !IA64_HP_SIM
259 config IA64_SGI_SN_XP
260 tristate "Support communication between SGI SSIs"
261 depends on IA64_GENERIC || IA64_SGI_SN2
262 select IA64_UNCACHED_ALLOCATOR
264 An SGI machine can be divided into multiple Single System
265 Images which act independently of each other and have
266 hardware based memory protection from the others. Enabling
267 this feature will allow for direct communication between SSIs
268 based on a network adapter and DMA messaging.
270 config FORCE_MAX_ZONEORDER
271 int "MAX_ORDER (11 - 17)" if !HUGETLB_PAGE
272 range 11 17 if !HUGETLB_PAGE
273 default "17" if HUGETLB_PAGE
277 bool "Symmetric multi-processing support"
279 This enables support for systems with more than one CPU. If you have
280 a system with only one CPU, say N. If you have a system with more
283 If you say N here, the kernel will run on single and multiprocessor
284 systems, but will use only one CPU of a multiprocessor system. If
285 you say Y here, the kernel will run on many, but not all,
286 single processor systems. On a single processor system, the kernel
287 will run faster if you say N here.
289 See also the SMP-HOWTO available at
290 <http://www.tldp.org/docs.html#howto>.
292 If you don't know what to do here, say N.
295 int "Maximum number of CPUs (2-1024)"
300 You should set this to the number of CPUs in your system, but
301 keep in mind that a kernel compiled for, e.g., 2 CPUs will boot but
302 only use 2 CPUs on a >2 CPU system. Setting this to a value larger
303 than 64 will cause the use of a CPU mask array, causing a small
307 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
308 depends on SMP && EXPERIMENTAL
312 Say Y here to experiment with turning CPUs off and on. CPUs
313 can be controlled through /sys/devices/system/cpu/cpu#.
314 Say N if you want to disable CPU hotplug.
316 config ARCH_ENABLE_MEMORY_HOTPLUG
319 config ARCH_ENABLE_MEMORY_HOTREMOVE
323 bool "SMT scheduler support"
326 Improves the CPU scheduler's decision making when dealing with
327 Intel IA64 chips with MultiThreading at a cost of slightly increased
328 overhead in some places. If unsure say N here.
330 config PERMIT_BSP_REMOVE
331 bool "Support removal of Bootstrap Processor"
332 depends on HOTPLUG_CPU
335 Say Y here if your platform SAL will support removal of BSP with HOTPLUG_CPU
338 config FORCE_CPEI_RETARGET
339 bool "Force assumption that CPEI can be re-targetted"
340 depends on PERMIT_BSP_REMOVE
343 Say Y if you need to force the assumption that CPEI can be re-targetted to
344 any cpu in the system. This hint is available via ACPI 3.0 specifications.
345 Tiger4 systems are capable of re-directing CPEI to any CPU other than BSP.
346 This option it useful to enable this feature on older BIOS's as well.
347 You can also enable this by using boot command line option force_cpei=1.
349 source "kernel/Kconfig.preempt"
353 config ARCH_SELECT_MEMORY_MODEL
356 config ARCH_DISCONTIGMEM_ENABLE
359 Say Y to support efficient handling of discontiguous physical memory,
360 for architectures which are either NUMA (Non-Uniform Memory Access)
361 or have huge holes in the physical address space for other reasons.
362 See <file:Documentation/vm/numa> for more.
364 config ARCH_FLATMEM_ENABLE
367 config ARCH_SPARSEMEM_ENABLE
369 depends on ARCH_DISCONTIGMEM_ENABLE
370 select SPARSEMEM_VMEMMAP_ENABLE
372 config ARCH_DISCONTIGMEM_DEFAULT
373 def_bool y if (IA64_SGI_SN2 || IA64_GENERIC || IA64_HP_ZX1 || IA64_HP_ZX1_SWIOTLB)
374 depends on ARCH_DISCONTIGMEM_ENABLE
378 depends on !IA64_HP_SIM && !FLATMEM
379 default y if IA64_SGI_SN2
380 select ACPI_NUMA if ACPI
382 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
383 Access). This option is for configuring high-end multiprocessor
384 server systems. If in doubt, say N.
387 int "Max num nodes shift(3-10)"
390 depends on NEED_MULTIPLE_NODES
392 This option specifies the maximum number of nodes in your SSI system.
393 MAX_NUMNODES will be 2^(This value).
394 If in doubt, use the default.
396 config ARCH_POPULATES_NODE_MAP
399 # VIRTUAL_MEM_MAP and FLAT_NODE_MEM_MAP are functionally equivalent.
400 # VIRTUAL_MEM_MAP has been retained for historical reasons.
401 config VIRTUAL_MEM_MAP
402 bool "Virtual mem map"
403 depends on !SPARSEMEM
404 default y if !IA64_HP_SIM
406 Say Y to compile the kernel with support for a virtual mem map.
407 This code also only takes effect if a memory hole of greater than
408 1 Gb is found during boot. You must turn this option on if you
409 require the DISCONTIGMEM option for your machine. If you are
414 default y if VIRTUAL_MEM_MAP
416 config HAVE_ARCH_EARLY_PFN_TO_NID
418 depends on NEED_MULTIPLE_NODES
420 config HAVE_ARCH_NODEDATA_EXTENSION
425 bool "Support for Linux/x86 binaries"
427 IA-64 processors can execute IA-32 (X86) instructions. By
428 saying Y here, the kernel will include IA-32 system call
429 emulation support which makes it possible to transparently
430 run IA-32 Linux binaries on an IA-64 Linux system.
435 depends on IA32_SUPPORT
438 config COMPAT_FOR_U64_ALIGNMENT
441 config IA64_MCA_RECOVERY
442 tristate "MCA recovery from errors other than TLB."
445 bool "Performance monitor support"
447 Selects whether support for the IA-64 performance monitor hardware
448 is included in the kernel. This makes some kernel data-structures a
449 little bigger and slows down execution a bit, but it is generally
450 a good idea to turn this on. If you're unsure, say Y.
453 tristate "/proc/pal support"
455 If you say Y here, you are able to get PAL (Processor Abstraction
456 Layer) information in /proc/pal. This contains useful information
457 about the processors in your systems, such as cache and TLB sizes
458 and the PAL firmware version in use.
460 To use this option, you have to ensure that the "/proc file system
461 support" (CONFIG_PROC_FS) is enabled, too.
463 config IA64_MC_ERR_INJECT
464 tristate "MC error injection support"
466 Adds support for MC error injection. If enabled, the kernel
467 will provide a sysfs interface for user applications to
468 call MC error injection PAL procedures to inject various errors.
469 This is a useful tool for MCA testing.
471 If you're unsure, do not select this option.
474 def_bool y if (IA64_SGI_SN2 || IA64_GENERIC)
477 bool "ESI (Extensible SAL Interface) support"
479 If you say Y here, support is built into the kernel to
480 make ESI calls. ESI calls are used to support vendor-specific
481 firmware extensions, such as the ability to inject memory-errors
482 for test-purposes. If you're unsure, say N.
484 config IA64_HP_AML_NFW
485 bool "Support ACPI AML calls to native firmware"
487 This driver installs a global ACPI Operation Region handler for
488 region 0xA1. AML methods can use this OpRegion to call arbitrary
489 native firmware functions. The driver installs the OpRegion
490 handler if there is an HPQ5001 device or if the user supplies
491 the "force" module parameter, e.g., with the "aml_nfw.force"
492 kernel command line option.
494 source "drivers/sn/Kconfig"
497 bool "kexec system call (EXPERIMENTAL)"
498 depends on EXPERIMENTAL && !IA64_HP_SIM && (!SMP || HOTPLUG_CPU)
500 kexec is a system call that implements the ability to shutdown your
501 current kernel, and to start another kernel. It is like a reboot
502 but it is independent of the system firmware. And like a reboot
503 you can start any kernel with it, not just Linux.
505 The name comes from the similarity to the exec system call.
507 It is an ongoing process to be certain the hardware in a machine
508 is properly shutdown, so do not be surprised if this code does not
509 initially work for you. It may help to enable device hotplugging
510 support. As of this writing the exact hardware interface is
511 strongly in flux, so no good recommendation can be made.
514 bool "kernel crash dumps (EXPERIMENTAL)"
515 depends on EXPERIMENTAL && IA64_MCA_RECOVERY && !IA64_HP_SIM && (!SMP || HOTPLUG_CPU)
517 Generate crash dump after being started by kexec.
519 source "drivers/firmware/Kconfig"
521 source "fs/Kconfig.binfmt"
525 menu "Power management and ACPI"
527 source "kernel/power/Kconfig"
529 source "drivers/acpi/Kconfig"
533 source "arch/ia64/kernel/cpufreq/Kconfig"
541 menu "Bus options (PCI, PCMCIA)"
546 Real IA-64 machines all have PCI/PCI-X/PCI Express busses. Say Y
547 here unless you are using a simulator without PCI support.
555 source "drivers/pci/pcie/Kconfig"
557 source "drivers/pci/Kconfig"
559 source "drivers/pci/hotplug/Kconfig"
561 source "drivers/pcmcia/Kconfig"
569 source "drivers/Kconfig"
572 tristate "Memory special operations driver"
574 select IA64_UNCACHED_ALLOCATOR
576 If you have an ia64 and you want to enable memory special
577 operations support (formerly known as fetchop), say Y here,
585 # Use the generic interrupt handling code in kernel/irq/:
587 config GENERIC_HARDIRQS
591 config GENERIC_IRQ_PROBE
595 config GENERIC_PENDING_IRQ
597 depends on GENERIC_HARDIRQS && SMP
604 source "arch/ia64/hp/sim/Kconfig"
606 source "arch/ia64/Kconfig.debug"
608 source "security/Kconfig"
610 source "crypto/Kconfig"