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_HAS_DMA_MARK_CLEAN
12 select ARCH_MIGHT_HAVE_PC_PARPORT
13 select ARCH_MIGHT_HAVE_PC_SERIO
15 select ACPI_NUMA if NUMA
16 select ARCH_ENABLE_MEMORY_HOTPLUG
17 select ARCH_ENABLE_MEMORY_HOTREMOVE
18 select ARCH_SUPPORTS_ACPI
19 select ACPI_SYSTEM_POWER_STATES_SUPPORT if ACPI
20 select ARCH_MIGHT_HAVE_ACPI_PDC if ACPI
22 select PCI_DOMAINS if PCI
24 select PCI_SYSCALL if PCI
25 select HAVE_ASM_MODVERSIONS
26 select HAVE_UNSTABLE_SCHED_CLOCK
27 select HAVE_EXIT_THREAD
29 select HAVE_KRETPROBES
30 select HAVE_FTRACE_MCOUNT_RECORD
31 select HAVE_DYNAMIC_FTRACE if (!ITANIUM)
32 select HAVE_FUNCTION_TRACER
34 select HAVE_ARCH_TRACEHOOK
35 select HAVE_VIRT_CPU_ACCOUNTING
36 select HUGETLB_PAGE_SIZE_VARIABLE if HUGETLB_PAGE
38 select GENERIC_IRQ_PROBE
39 select GENERIC_PENDING_IRQ if SMP
40 select GENERIC_IRQ_SHOW
41 select GENERIC_IRQ_LEGACY
42 select ARCH_HAVE_NMI_SAFE_CMPXCHG
44 select GENERIC_SMP_IDLE_THREAD
45 select ARCH_TASK_STRUCT_ON_STACK
46 select ARCH_TASK_STRUCT_ALLOCATOR
47 select ARCH_THREAD_STACK_ALLOCATOR
48 select ARCH_CLOCKSOURCE_DATA
49 select GENERIC_TIME_VSYSCALL
50 select LEGACY_TIMER_TICK
52 select SYSCTL_ARCH_UNALIGN_NO_WARN
53 select HAVE_MOD_ARCH_SPECIFIC
54 select MODULES_USE_ELF_RELA
55 select ARCH_USE_CMPXCHG_LOCKREF
56 select HAVE_ARCH_AUDITSYSCALL
57 select NEED_DMA_MAP_STATE
58 select NEED_SG_DMA_LENGTH
59 select NUMA if !FLATMEM
60 select PCI_MSI_ARCH_FALLBACKS if PCI_MSI
65 The Itanium Processor Family is Intel's 64-bit successor to
66 the 32-bit X86 line. The IA-64 Linux project has a home
67 page at <http://www.linuxia64.org/> and a mailing list at
68 <linux-ia64@vger.kernel.org>.
72 select ATA_NONSTANDARD if ATA
79 config STACKTRACE_SUPPORT
82 config GENERIC_LOCKBREAK
85 config GENERIC_CALIBRATE_DELAY
89 config HAVE_SETUP_PER_CPU_AREA
95 select DMI_SCAN_MACHINE_NON_EFI_FALLBACK
102 config SCHED_OMIT_FRAME_POINTER
106 config IA64_UNCACHED_ALLOCATOR
108 select GENERIC_ALLOCATOR
110 config ARCH_USES_PG_UNCACHED
112 depends on IA64_UNCACHED_ALLOCATOR
119 prompt "Processor type"
125 Select your IA-64 processor type. The default is Itanium.
126 This choice is safe for all IA-64 systems, but may not perform
127 optimally on systems with, say, Itanium 2 or newer processors.
132 Select this to configure for an Itanium 2 (McKinley) processor.
137 prompt "Kernel page size"
138 default IA64_PAGE_SIZE_16KB
140 config IA64_PAGE_SIZE_4KB
143 This lets you select the page size of the kernel. For best IA-64
144 performance, a page size of 8KB or 16KB is recommended. For best
145 IA-32 compatibility, a page size of 4KB should be selected (the vast
146 majority of IA-32 binaries work perfectly fine with a larger page
147 size). For Itanium 2 or newer systems, a page size of 64KB can also
150 4KB For best IA-32 compatibility
151 8KB For best IA-64 performance
152 16KB For best IA-64 performance
153 64KB Requires Itanium 2 or newer processor.
155 If you don't know what to do, choose 16KB.
157 config IA64_PAGE_SIZE_8KB
160 config IA64_PAGE_SIZE_16KB
163 config IA64_PAGE_SIZE_64KB
169 source "kernel/Kconfig.hz"
176 # align cache-sensitive data to 128 bytes
177 config IA64_L1_CACHE_SHIFT
179 default "7" if MCKINLEY
180 default "6" if ITANIUM
183 bool "SGI-UV support"
185 Selecting this option will add specific support for running on SGI
186 UV based systems. If you have an SGI UV system or are building a
187 distro kernel, select this option.
189 config IA64_HP_SBA_IOMMU
190 bool "HP SBA IOMMU support"
194 Say Y here to add support for the SBA IOMMU found on HP zx1 and
195 sx1000 systems. If you're unsure, answer Y.
198 bool "Cyclone (EXA) Time Source support"
200 Say Y here to enable support for IBM EXA Cyclone time source.
201 If you're unsure, answer N.
203 config FORCE_MAX_ZONEORDER
204 int "MAX_ORDER (11 - 17)" if !HUGETLB_PAGE
205 range 11 17 if !HUGETLB_PAGE
206 default "17" if HUGETLB_PAGE
210 bool "Symmetric multi-processing support"
212 This enables support for systems with more than one CPU. If you have
213 a system with only one CPU, say N. If you have a system with more
216 If you say N here, the kernel will run on single and multiprocessor
217 systems, but will use only one CPU of a multiprocessor system. If
218 you say Y here, the kernel will run on many, but not all,
219 single processor systems. On a single processor system, the kernel
220 will run faster if you say N here.
222 See also the SMP-HOWTO available at
223 <http://www.tldp.org/docs.html#howto>.
225 If you don't know what to do here, say N.
228 int "Maximum number of CPUs (2-4096)"
233 You should set this to the number of CPUs in your system, but
234 keep in mind that a kernel compiled for, e.g., 2 CPUs will boot but
235 only use 2 CPUs on a >2 CPU system. Setting this to a value larger
236 than 64 will cause the use of a CPU mask array, causing a small
240 bool "Support for hot-pluggable CPUs"
244 Say Y here to experiment with turning CPUs off and on. CPUs
245 can be controlled through /sys/devices/system/cpu/cpu#.
246 Say N if you want to disable CPU hotplug.
249 bool "SMT scheduler support"
252 Improves the CPU scheduler's decision making when dealing with
253 Intel IA64 chips with MultiThreading at a cost of slightly increased
254 overhead in some places. If unsure say N here.
256 config PERMIT_BSP_REMOVE
257 bool "Support removal of Bootstrap Processor"
258 depends on HOTPLUG_CPU
261 Say Y here if your platform SAL will support removal of BSP with HOTPLUG_CPU
264 config FORCE_CPEI_RETARGET
265 bool "Force assumption that CPEI can be re-targeted"
266 depends on PERMIT_BSP_REMOVE
269 Say Y if you need to force the assumption that CPEI can be re-targeted to
270 any cpu in the system. This hint is available via ACPI 3.0 specifications.
271 Tiger4 systems are capable of re-directing CPEI to any CPU other than BSP.
272 This option it useful to enable this feature on older BIOS's as well.
273 You can also enable this by using boot command line option force_cpei=1.
275 config ARCH_SELECT_MEMORY_MODEL
278 config ARCH_FLATMEM_ENABLE
281 config ARCH_SPARSEMEM_ENABLE
283 select SPARSEMEM_VMEMMAP_ENABLE
285 config ARCH_SPARSEMEM_DEFAULT
287 depends on ARCH_SPARSEMEM_ENABLE
294 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
295 Access). This option is for configuring high-end multiprocessor
296 server systems. If in doubt, say N.
299 int "Max num nodes shift(3-10)"
304 This option specifies the maximum number of nodes in your SSI system.
305 MAX_NUMNODES will be 2^(This value).
306 If in doubt, use the default.
308 config HAVE_ARCH_NODEDATA_EXTENSION
312 config USE_PERCPU_NUMA_NODE_ID
316 config HAVE_MEMORYLESS_NODES
319 config ARCH_PROC_KCORE_TEXT
321 depends on PROC_KCORE
323 config IA64_MCA_RECOVERY
324 tristate "MCA recovery from errors other than TLB."
327 tristate "/proc/pal support"
329 If you say Y here, you are able to get PAL (Processor Abstraction
330 Layer) information in /proc/pal. This contains useful information
331 about the processors in your systems, such as cache and TLB sizes
332 and the PAL firmware version in use.
334 To use this option, you have to ensure that the "/proc file system
335 support" (CONFIG_PROC_FS) is enabled, too.
337 config IA64_MC_ERR_INJECT
338 tristate "MC error injection support"
340 Adds support for MC error injection. If enabled, the kernel
341 will provide a sysfs interface for user applications to
342 call MC error injection PAL procedures to inject various errors.
343 This is a useful tool for MCA testing.
345 If you're unsure, do not select this option.
348 bool "ESI (Extensible SAL Interface) support"
350 If you say Y here, support is built into the kernel to
351 make ESI calls. ESI calls are used to support vendor-specific
352 firmware extensions, such as the ability to inject memory-errors
353 for test-purposes. If you're unsure, say N.
355 config IA64_HP_AML_NFW
356 bool "Support ACPI AML calls to native firmware"
358 This driver installs a global ACPI Operation Region handler for
359 region 0xA1. AML methods can use this OpRegion to call arbitrary
360 native firmware functions. The driver installs the OpRegion
361 handler if there is an HPQ5001 device or if the user supplies
362 the "force" module parameter, e.g., with the "aml_nfw.force"
363 kernel command line option.
366 bool "kexec system call"
367 depends on !SMP || HOTPLUG_CPU
370 kexec is a system call that implements the ability to shutdown your
371 current kernel, and to start another kernel. It is like a reboot
372 but it is independent of the system firmware. And like a reboot
373 you can start any kernel with it, not just Linux.
375 The name comes from the similarity to the exec system call.
377 It is an ongoing process to be certain the hardware in a machine
378 is properly shutdown, so do not be surprised if this code does not
379 initially work for you. As of this writing the exact hardware
380 interface is strongly in flux, so no good recommendation can be
384 bool "kernel crash dumps"
385 depends on IA64_MCA_RECOVERY && (!SMP || HOTPLUG_CPU)
387 Generate crash dump after being started by kexec.
389 source "drivers/firmware/Kconfig"
393 menu "Power management and ACPI options"
395 source "kernel/power/Kconfig"
397 source "drivers/acpi/Kconfig"
400 menu "CPU Frequency scaling"
401 source "drivers/cpufreq/Kconfig"
408 tristate "Memory special operations driver"
410 select IA64_UNCACHED_ALLOCATOR
412 If you have an ia64 and you want to enable memory special
413 operations support (formerly known as fetchop), say Y here,