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
7 menu "Processor type and features"
11 select ARCH_MIGHT_HAVE_PC_PARPORT
12 select ARCH_MIGHT_HAVE_PC_SERIO
13 select ACPI if (!IA64_HP_SIM)
14 select ARCH_SUPPORTS_ACPI if (!IA64_HP_SIM)
15 select ACPI_SYSTEM_POWER_STATES_SUPPORT if ACPI
16 select ARCH_MIGHT_HAVE_ACPI_PDC if ACPI
17 select FORCE_PCI if (!IA64_HP_SIM)
18 select PCI_DOMAINS if PCI
19 select PCI_SYSCALL if PCI
20 select HAVE_UNSTABLE_SCHED_CLOCK
21 select HAVE_EXIT_THREAD
25 select HAVE_KRETPROBES
26 select HAVE_FTRACE_MCOUNT_RECORD
27 select HAVE_DYNAMIC_FTRACE if (!ITANIUM)
28 select HAVE_FUNCTION_TRACER
30 select HAVE_ARCH_TRACEHOOK
31 select HAVE_MEMBLOCK_NODE_MAP
32 select HAVE_VIRT_CPU_ACCOUNTING
33 select ARCH_HAS_DMA_COHERENT_TO_PFN if SWIOTLB
34 select ARCH_HAS_SYNC_DMA_FOR_CPU if SWIOTLB
36 select GENERIC_IRQ_PROBE
37 select GENERIC_PENDING_IRQ if SMP
38 select GENERIC_IRQ_SHOW
39 select GENERIC_IRQ_LEGACY
40 select ARCH_HAVE_NMI_SAFE_CMPXCHG
42 select GENERIC_SMP_IDLE_THREAD
43 select ARCH_TASK_STRUCT_ON_STACK
44 select ARCH_TASK_STRUCT_ALLOCATOR
45 select ARCH_THREAD_STACK_ALLOCATOR
46 select ARCH_CLOCKSOURCE_DATA
47 select GENERIC_TIME_VSYSCALL
48 select SYSCTL_ARCH_UNALIGN_NO_WARN
49 select HAVE_MOD_ARCH_SPECIFIC
50 select MODULES_USE_ELF_RELA
51 select ARCH_USE_CMPXCHG_LOCKREF
52 select HAVE_ARCH_AUDITSYSCALL
53 select NEED_DMA_MAP_STATE
54 select NEED_SG_DMA_LENGTH
57 The Itanium Processor Family is Intel's 64-bit successor to
58 the 32-bit X86 line. The IA-64 Linux project has a home
59 page at <http://www.linuxia64.org/> and a mailing list at
60 <linux-ia64@vger.kernel.org>.
64 select ATA_NONSTANDARD if ATA
78 config STACKTRACE_SUPPORT
81 config GENERIC_LOCKBREAK
84 config HUGETLB_PAGE_SIZE_VARIABLE
86 depends on HUGETLB_PAGE
89 config GENERIC_CALIBRATE_DELAY
93 config HAVE_SETUP_PER_CPU_AREA
99 select DMI_SCAN_MACHINE_NON_EFI_FALLBACK
106 config SCHED_OMIT_FRAME_POINTER
110 config IA64_UNCACHED_ALLOCATOR
112 select GENERIC_ALLOCATOR
114 config ARCH_USES_PG_UNCACHED
116 depends on IA64_UNCACHED_ALLOCATOR
133 This selects the system type of your hardware. A "generic" kernel
134 will run on any supported IA-64 system. However, if you configure
135 a kernel for your specific system, it will be faster and smaller.
137 generic For any supported IA-64 system
138 DIG-compliant For DIG ("Developer's Interface Guide") compliant systems
139 DIG+Intel+IOMMU For DIG systems with Intel IOMMU
140 HP-zx1/sx1000 For HP systems
141 HP-zx1/sx1000+swiotlb For HP systems with (broken) DMA-constrained devices.
142 SGI-UV For SGI UV systems
143 Ski-simulator For the HP simulator <http://www.hpl.hp.com/research/linux/ski/>
145 If you don't know what to do, choose "generic".
152 bool "DIG+Intel+IOMMU"
159 Build a kernel that runs on HP zx1 and sx1000 systems. This adds
160 support for the HP I/O MMU.
162 config IA64_HP_ZX1_SWIOTLB
163 bool "HP-zx1/sx1000 with software I/O TLB"
166 Build a kernel that runs on HP zx1 and sx1000 systems even when they
167 have broken PCI devices which cannot DMA to full 32 bits. Apart
168 from support for the HP I/O MMU, this includes support for the software
169 I/O TLB, which allows supporting the broken devices at the expense of
170 wasting some kernel memory (about 2MB by default).
178 Selecting this option will optimize the kernel for use on UV based
179 systems, but the resulting kernel binary will not run on other
180 types of ia64 systems. If you have an SGI UV system, it's safe
181 to select this option. If in doubt, select ia64 generic support
192 prompt "Processor type"
198 Select your IA-64 processor type. The default is Itanium.
199 This choice is safe for all IA-64 systems, but may not perform
200 optimally on systems with, say, Itanium 2 or newer processors.
205 Select this to configure for an Itanium 2 (McKinley) processor.
210 prompt "Kernel page size"
211 default IA64_PAGE_SIZE_16KB
213 config IA64_PAGE_SIZE_4KB
216 This lets you select the page size of the kernel. For best IA-64
217 performance, a page size of 8KB or 16KB is recommended. For best
218 IA-32 compatibility, a page size of 4KB should be selected (the vast
219 majority of IA-32 binaries work perfectly fine with a larger page
220 size). For Itanium 2 or newer systems, a page size of 64KB can also
223 4KB For best IA-32 compatibility
224 8KB For best IA-64 performance
225 16KB For best IA-64 performance
226 64KB Requires Itanium 2 or newer processor.
228 If you don't know what to do, choose 16KB.
230 config IA64_PAGE_SIZE_8KB
233 config IA64_PAGE_SIZE_16KB
236 config IA64_PAGE_SIZE_64KB
248 source "kernel/Kconfig.hz"
256 # align cache-sensitive data to 128 bytes
257 config IA64_L1_CACHE_SHIFT
259 default "7" if MCKINLEY
260 default "6" if ITANIUM
263 bool "Cyclone (EXA) Time Source support"
265 Say Y here to enable support for IBM EXA Cyclone time source.
266 If you're unsure, answer N.
270 depends on !IA64_HP_SIM
273 config FORCE_MAX_ZONEORDER
274 int "MAX_ORDER (11 - 17)" if !HUGETLB_PAGE
275 range 11 17 if !HUGETLB_PAGE
276 default "17" if HUGETLB_PAGE
280 bool "Symmetric multi-processing support"
282 This enables support for systems with more than one CPU. If you have
283 a system with only one CPU, say N. If you have a system with more
286 If you say N here, the kernel will run on single and multiprocessor
287 systems, but will use only one CPU of a multiprocessor system. If
288 you say Y here, the kernel will run on many, but not all,
289 single processor systems. On a single processor system, the kernel
290 will run faster if you say N here.
292 See also the SMP-HOWTO available at
293 <http://www.tldp.org/docs.html#howto>.
295 If you don't know what to do here, say N.
298 int "Maximum number of CPUs (2-4096)"
303 You should set this to the number of CPUs in your system, but
304 keep in mind that a kernel compiled for, e.g., 2 CPUs will boot but
305 only use 2 CPUs on a >2 CPU system. Setting this to a value larger
306 than 64 will cause the use of a CPU mask array, causing a small
310 bool "Support for hot-pluggable CPUs"
314 Say Y here to experiment with turning CPUs off and on. CPUs
315 can be controlled through /sys/devices/system/cpu/cpu#.
316 Say N if you want to disable CPU hotplug.
318 config ARCH_ENABLE_MEMORY_HOTPLUG
321 config ARCH_ENABLE_MEMORY_HOTREMOVE
325 bool "SMT scheduler support"
328 Improves the CPU scheduler's decision making when dealing with
329 Intel IA64 chips with MultiThreading at a cost of slightly increased
330 overhead in some places. If unsure say N here.
332 config PERMIT_BSP_REMOVE
333 bool "Support removal of Bootstrap Processor"
334 depends on HOTPLUG_CPU
337 Say Y here if your platform SAL will support removal of BSP with HOTPLUG_CPU
340 config FORCE_CPEI_RETARGET
341 bool "Force assumption that CPEI can be re-targeted"
342 depends on PERMIT_BSP_REMOVE
345 Say Y if you need to force the assumption that CPEI can be re-targeted to
346 any cpu in the system. This hint is available via ACPI 3.0 specifications.
347 Tiger4 systems are capable of re-directing CPEI to any CPU other than BSP.
348 This option it useful to enable this feature on older BIOS's as well.
349 You can also enable this by using boot command line option force_cpei=1.
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.rst> 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_GENERIC || IA64_HP_ZX1 || IA64_HP_ZX1_SWIOTLB)
372 depends on ARCH_DISCONTIGMEM_ENABLE
376 depends on !IA64_HP_SIM && !FLATMEM
377 select ACPI_NUMA if ACPI
379 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
380 Access). This option is for configuring high-end multiprocessor
381 server systems. If in doubt, say N.
384 int "Max num nodes shift(3-10)"
387 depends on NEED_MULTIPLE_NODES
389 This option specifies the maximum number of nodes in your SSI system.
390 MAX_NUMNODES will be 2^(This value).
391 If in doubt, use the default.
393 # VIRTUAL_MEM_MAP and FLAT_NODE_MEM_MAP are functionally equivalent.
394 # VIRTUAL_MEM_MAP has been retained for historical reasons.
395 config VIRTUAL_MEM_MAP
396 bool "Virtual mem map"
397 depends on !SPARSEMEM
398 default y if !IA64_HP_SIM
400 Say Y to compile the kernel with support for a virtual mem map.
401 This code also only takes effect if a memory hole of greater than
402 1 Gb is found during boot. You must turn this option on if you
403 require the DISCONTIGMEM option for your machine. If you are
408 default y if VIRTUAL_MEM_MAP
410 config HAVE_ARCH_EARLY_PFN_TO_NID
411 def_bool NUMA && SPARSEMEM
413 config HAVE_ARCH_NODEDATA_EXTENSION
417 config USE_PERCPU_NUMA_NODE_ID
421 config HAVE_MEMORYLESS_NODES
424 config ARCH_PROC_KCORE_TEXT
426 depends on PROC_KCORE
428 config IA64_MCA_RECOVERY
429 tristate "MCA recovery from errors other than TLB."
432 bool "Performance monitor support"
435 Selects whether support for the IA-64 performance monitor hardware
436 is included in the kernel. This makes some kernel data-structures a
437 little bigger and slows down execution a bit, but it is generally
438 a good idea to turn this on. If you're unsure, say Y.
441 tristate "/proc/pal support"
443 If you say Y here, you are able to get PAL (Processor Abstraction
444 Layer) information in /proc/pal. This contains useful information
445 about the processors in your systems, such as cache and TLB sizes
446 and the PAL firmware version in use.
448 To use this option, you have to ensure that the "/proc file system
449 support" (CONFIG_PROC_FS) is enabled, too.
451 config IA64_MC_ERR_INJECT
452 tristate "MC error injection support"
454 Adds support for MC error injection. If enabled, the kernel
455 will provide a sysfs interface for user applications to
456 call MC error injection PAL procedures to inject various errors.
457 This is a useful tool for MCA testing.
459 If you're unsure, do not select this option.
462 bool "ESI (Extensible SAL Interface) support"
464 If you say Y here, support is built into the kernel to
465 make ESI calls. ESI calls are used to support vendor-specific
466 firmware extensions, such as the ability to inject memory-errors
467 for test-purposes. If you're unsure, say N.
469 config IA64_HP_AML_NFW
470 bool "Support ACPI AML calls to native firmware"
472 This driver installs a global ACPI Operation Region handler for
473 region 0xA1. AML methods can use this OpRegion to call arbitrary
474 native firmware functions. The driver installs the OpRegion
475 handler if there is an HPQ5001 device or if the user supplies
476 the "force" module parameter, e.g., with the "aml_nfw.force"
477 kernel command line option.
480 bool "kexec system call"
481 depends on !IA64_HP_SIM && (!SMP || HOTPLUG_CPU)
484 kexec is a system call that implements the ability to shutdown your
485 current kernel, and to start another kernel. It is like a reboot
486 but it is independent of the system firmware. And like a reboot
487 you can start any kernel with it, not just Linux.
489 The name comes from the similarity to the exec system call.
491 It is an ongoing process to be certain the hardware in a machine
492 is properly shutdown, so do not be surprised if this code does not
493 initially work for you. As of this writing the exact hardware
494 interface is strongly in flux, so no good recommendation can be
498 bool "kernel crash dumps"
499 depends on IA64_MCA_RECOVERY && !IA64_HP_SIM && (!SMP || HOTPLUG_CPU)
501 Generate crash dump after being started by kexec.
503 source "drivers/firmware/Kconfig"
507 menu "Power management and ACPI options"
509 source "kernel/power/Kconfig"
511 source "drivers/acpi/Kconfig"
514 menu "CPU Frequency scaling"
515 source "drivers/cpufreq/Kconfig"
521 source "arch/ia64/hp/sim/Kconfig"
524 tristate "Memory special operations driver"
526 select IA64_UNCACHED_ALLOCATOR
528 If you have an ia64 and you want to enable memory special
529 operations support (formerly known as fetchop), say Y here,