arch/ia64/Kconfig

   1 # SPDX-License-Identifier: GPL-2.0
   2 config PGTABLE_LEVELS
   3         int "Page Table Levels" if !IA64_PAGE_SIZE_64KB
   4         range 3 4 if !IA64_PAGE_SIZE_64KB
   5         default 3
   6
   7 menu "Processor type and features"
   8
   9 config IA64
  10         bool
  11         select ARCH_MIGHT_HAVE_PC_PARPORT
  12         select ARCH_MIGHT_HAVE_PC_SERIO
  13         select PCI if (!IA64_HP_SIM)
  14         select 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 HAVE_UNSTABLE_SCHED_CLOCK
  18         select HAVE_EXIT_THREAD
  19         select HAVE_IDE
  20         select HAVE_OPROFILE
  21         select HAVE_KPROBES
  22         select HAVE_KRETPROBES
  23         select HAVE_FTRACE_MCOUNT_RECORD
  24         select HAVE_DYNAMIC_FTRACE if (!ITANIUM)
  25         select HAVE_FUNCTION_TRACER
  26         select TTY
  27         select HAVE_ARCH_TRACEHOOK
  28         select HAVE_MEMBLOCK
  29         select HAVE_MEMBLOCK_NODE_MAP
  30         select HAVE_VIRT_CPU_ACCOUNTING
  31         select ARCH_HAS_DMA_MARK_CLEAN
  32         select ARCH_HAS_SG_CHAIN
  33         select VIRT_TO_BUS
  34         select ARCH_DISCARD_MEMBLOCK
  35         select GENERIC_IRQ_PROBE
  36         select GENERIC_PENDING_IRQ if SMP
  37         select GENERIC_IRQ_SHOW
  38         select GENERIC_IRQ_LEGACY
  39         select ARCH_HAVE_NMI_SAFE_CMPXCHG
  40         select GENERIC_IOMAP
  41         select GENERIC_SMP_IDLE_THREAD
  42         select ARCH_TASK_STRUCT_ON_STACK
  43         select ARCH_TASK_STRUCT_ALLOCATOR
  44         select ARCH_THREAD_STACK_ALLOCATOR
  45         select ARCH_CLOCKSOURCE_DATA
  46         select GENERIC_TIME_VSYSCALL
  47         select SYSCTL_ARCH_UNALIGN_NO_WARN
  48         select HAVE_MOD_ARCH_SPECIFIC
  49         select MODULES_USE_ELF_RELA
  50         select ARCH_USE_CMPXCHG_LOCKREF
  51         select HAVE_ARCH_AUDITSYSCALL
  52         select NEED_DMA_MAP_STATE
  53         select NEED_SG_DMA_LENGTH
  54         default y
  55         help
  56           The Itanium Processor Family is Intel's 64-bit successor to
  57           the 32-bit X86 line.  The IA-64 Linux project has a home
  58           page at <http://www.linuxia64.org/> and a mailing list at
  59           <linux-ia64@vger.kernel.org>.
  60
  61 config 64BIT
  62         bool
  63         select ATA_NONSTANDARD if ATA
  64         default y
  65
  66 config ZONE_DMA32
  67         def_bool y
  68         depends on !IA64_SGI_SN2
  69
  70 config QUICKLIST
  71         bool
  72         default y
  73
  74 config MMU
  75         bool
  76         default y
  77
  78 config STACKTRACE_SUPPORT
  79         def_bool y
  80
  81 config GENERIC_LOCKBREAK
  82         def_bool n
  83
  84 config RWSEM_XCHGADD_ALGORITHM
  85         bool
  86         default y
  87
  88 config HUGETLB_PAGE_SIZE_VARIABLE
  89         bool
  90         depends on HUGETLB_PAGE
  91         default y
  92
  93 config GENERIC_CALIBRATE_DELAY
  94         bool
  95         default y
  96
  97 config HAVE_SETUP_PER_CPU_AREA
  98         def_bool y
  99
 100 config DMI
 101         bool
 102         default y
 103         select DMI_SCAN_MACHINE_NON_EFI_FALLBACK
 104
 105 config EFI
 106         bool
 107         select UCS2_STRING
 108         default y
 109
 110 config SCHED_OMIT_FRAME_POINTER
 111         bool
 112         default y
 113
 114 config IA64_UNCACHED_ALLOCATOR
 115         bool
 116         select GENERIC_ALLOCATOR
 117
 118 config ARCH_USES_PG_UNCACHED
 119         def_bool y
 120         depends on IA64_UNCACHED_ALLOCATOR
 121
 122 config AUDIT_ARCH
 123         bool
 124         default y
 125
 126 choice
 127         prompt "System type"
 128         default IA64_GENERIC
 129
 130 config IA64_GENERIC
 131         bool "generic"
 132         select NUMA
 133         select ACPI_NUMA
 134         select SWIOTLB
 135         select PCI_MSI
 136         help
 137           This selects the system type of your hardware.  A "generic" kernel
 138           will run on any supported IA-64 system.  However, if you configure
 139           a kernel for your specific system, it will be faster and smaller.
 140
 141           generic               For any supported IA-64 system
 142           DIG-compliant         For DIG ("Developer's Interface Guide") compliant systems
 143           DIG+Intel+IOMMU       For DIG systems with Intel IOMMU
 144           HP-zx1/sx1000         For HP systems
 145           HP-zx1/sx1000+swiotlb For HP systems with (broken) DMA-constrained devices.
 146           SGI-SN2               For SGI Altix systems
 147           SGI-UV                For SGI UV systems
 148           Ski-simulator         For the HP simulator <http://www.hpl.hp.com/research/linux/ski/>
 149
 150           If you don't know what to do, choose "generic".
 151
 152 config IA64_DIG
 153         bool "DIG-compliant"
 154         select SWIOTLB
 155
 156 config IA64_DIG_VTD
 157         bool "DIG+Intel+IOMMU"
 158         select INTEL_IOMMU
 159         select PCI_MSI
 160
 161 config IA64_HP_ZX1
 162         bool "HP-zx1/sx1000"
 163         help
 164           Build a kernel that runs on HP zx1 and sx1000 systems.  This adds
 165           support for the HP I/O MMU.
 166
 167 config IA64_HP_ZX1_SWIOTLB
 168         bool "HP-zx1/sx1000 with software I/O TLB"
 169         select SWIOTLB
 170         help
 171           Build a kernel that runs on HP zx1 and sx1000 systems even when they
 172           have broken PCI devices which cannot DMA to full 32 bits.  Apart
 173           from support for the HP I/O MMU, this includes support for the software
 174           I/O TLB, which allows supporting the broken devices at the expense of
 175           wasting some kernel memory (about 2MB by default).
 176
 177 config IA64_SGI_SN2
 178         bool "SGI-SN2"
 179         select NUMA
 180         select ACPI_NUMA
 181         help
 182           Selecting this option will optimize the kernel for use on sn2 based
 183           systems, but the resulting kernel binary will not run on other
 184           types of ia64 systems.  If you have an SGI Altix system, it's safe
 185           to select this option.  If in doubt, select ia64 generic support
 186           instead.
 187
 188 config IA64_SGI_UV
 189         bool "SGI-UV"
 190         select NUMA
 191         select ACPI_NUMA
 192         select SWIOTLB
 193         help
 194           Selecting this option will optimize the kernel for use on UV based
 195           systems, but the resulting kernel binary will not run on other
 196           types of ia64 systems.  If you have an SGI UV system, it's safe
 197           to select this option.  If in doubt, select ia64 generic support
 198           instead.
 199
 200 config IA64_HP_SIM
 201         bool "Ski-simulator"
 202         select SWIOTLB
 203         depends on !PM
 204
 205 endchoice
 206
 207 choice
 208         prompt "Processor type"
 209         default ITANIUM
 210
 211 config ITANIUM
 212         bool "Itanium"
 213         help
 214           Select your IA-64 processor type.  The default is Itanium.
 215           This choice is safe for all IA-64 systems, but may not perform
 216           optimally on systems with, say, Itanium 2 or newer processors.
 217
 218 config MCKINLEY
 219         bool "Itanium 2"
 220         help
 221           Select this to configure for an Itanium 2 (McKinley) processor.
 222
 223 endchoice
 224
 225 choice
 226         prompt "Kernel page size"
 227         default IA64_PAGE_SIZE_16KB
 228
 229 config IA64_PAGE_SIZE_4KB
 230         bool "4KB"
 231         help
 232           This lets you select the page size of the kernel.  For best IA-64
 233           performance, a page size of 8KB or 16KB is recommended.  For best
 234           IA-32 compatibility, a page size of 4KB should be selected (the vast
 235           majority of IA-32 binaries work perfectly fine with a larger page
 236           size).  For Itanium 2 or newer systems, a page size of 64KB can also
 237           be selected.
 238
 239           4KB                For best IA-32 compatibility
 240           8KB                For best IA-64 performance
 241           16KB               For best IA-64 performance
 242           64KB               Requires Itanium 2 or newer processor.
 243
 244           If you don't know what to do, choose 16KB.
 245
 246 config IA64_PAGE_SIZE_8KB
 247         bool "8KB"
 248
 249 config IA64_PAGE_SIZE_16KB
 250         bool "16KB"
 251
 252 config IA64_PAGE_SIZE_64KB
 253         depends on !ITANIUM
 254         bool "64KB"
 255
 256 endchoice
 257
 258 if IA64_HP_SIM
 259 config HZ
 260         default 32
 261 endif
 262
 263 if !IA64_HP_SIM
 264 source kernel/Kconfig.hz
 265 endif
 266
 267 config IA64_BRL_EMU
 268         bool
 269         depends on ITANIUM
 270         default y
 271
 272 # align cache-sensitive data to 128 bytes
 273 config IA64_L1_CACHE_SHIFT
 274         int
 275         default "7" if MCKINLEY
 276         default "6" if ITANIUM
 277
 278 config IA64_CYCLONE
 279         bool "Cyclone (EXA) Time Source support"
 280         help
 281           Say Y here to enable support for IBM EXA Cyclone time source.
 282           If you're unsure, answer N.
 283
 284 config IOSAPIC
 285         bool
 286         depends on !IA64_HP_SIM
 287         default y
 288
 289 config FORCE_MAX_ZONEORDER
 290         int "MAX_ORDER (11 - 17)"  if !HUGETLB_PAGE
 291         range 11 17  if !HUGETLB_PAGE
 292         default "17" if HUGETLB_PAGE
 293         default "11"
 294
 295 config SMP
 296         bool "Symmetric multi-processing support"
 297         help
 298           This enables support for systems with more than one CPU. If you have
 299           a system with only one CPU, say N.  If you have a system with more
 300           than one CPU, say Y.
 301
 302           If you say N here, the kernel will run on single and multiprocessor
 303           systems, but will use only one CPU of a multiprocessor system.  If
 304           you say Y here, the kernel will run on many, but not all,
 305           single processor systems.  On a single processor system, the kernel
 306           will run faster if you say N here.
 307
 308           See also the SMP-HOWTO available at
 309           <http://www.tldp.org/docs.html#howto>.
 310
 311           If you don't know what to do here, say N.
 312
 313 config NR_CPUS
 314         int "Maximum number of CPUs (2-4096)"
 315         range 2 4096
 316         depends on SMP
 317         default "4096"
 318         help
 319           You should set this to the number of CPUs in your system, but
 320           keep in mind that a kernel compiled for, e.g., 2 CPUs will boot but
 321           only use 2 CPUs on a >2 CPU system.  Setting this to a value larger
 322           than 64 will cause the use of a CPU mask array, causing a small
 323           performance hit.
 324
 325 config HOTPLUG_CPU
 326         bool "Support for hot-pluggable CPUs"
 327         depends on SMP
 328         default n
 329         ---help---
 330           Say Y here to experiment with turning CPUs off and on.  CPUs
 331           can be controlled through /sys/devices/system/cpu/cpu#.
 332           Say N if you want to disable CPU hotplug.
 333
 334 config ARCH_ENABLE_MEMORY_HOTPLUG
 335         def_bool y
 336
 337 config ARCH_ENABLE_MEMORY_HOTREMOVE
 338         def_bool y
 339
 340 config SCHED_SMT
 341         bool "SMT scheduler support"
 342         depends on SMP
 343         help
 344           Improves the CPU scheduler's decision making when dealing with
 345           Intel IA64 chips with MultiThreading at a cost of slightly increased
 346           overhead in some places. If unsure say N here.
 347
 348 config PERMIT_BSP_REMOVE
 349         bool "Support removal of Bootstrap Processor"
 350         depends on HOTPLUG_CPU
 351         default n
 352         ---help---
 353         Say Y here if your platform SAL will support removal of BSP with HOTPLUG_CPU
 354         support.
 355
 356 config FORCE_CPEI_RETARGET
 357         bool "Force assumption that CPEI can be re-targeted"
 358         depends on PERMIT_BSP_REMOVE
 359         default n
 360         ---help---
 361         Say Y if you need to force the assumption that CPEI can be re-targeted to
 362         any cpu in the system. This hint is available via ACPI 3.0 specifications.
 363         Tiger4 systems are capable of re-directing CPEI to any CPU other than BSP.
 364         This option it useful to enable this feature on older BIOS's as well.
 365         You can also enable this by using boot command line option force_cpei=1.
 366
 367 source "kernel/Kconfig.preempt"
 368
 369 config ARCH_SELECT_MEMORY_MODEL
 370         def_bool y
 371
 372 config ARCH_DISCONTIGMEM_ENABLE
 373         def_bool y
 374         help
 375           Say Y to support efficient handling of discontiguous physical memory,
 376           for architectures which are either NUMA (Non-Uniform Memory Access)
 377           or have huge holes in the physical address space for other reasons.
 378           See <file:Documentation/vm/numa.rst> for more.
 379
 380 config ARCH_FLATMEM_ENABLE
 381         def_bool y
 382
 383 config ARCH_SPARSEMEM_ENABLE
 384         def_bool y
 385         depends on ARCH_DISCONTIGMEM_ENABLE
 386         select SPARSEMEM_VMEMMAP_ENABLE
 387
 388 config ARCH_DISCONTIGMEM_DEFAULT
 389         def_bool y if (IA64_SGI_SN2 || IA64_GENERIC || IA64_HP_ZX1 || IA64_HP_ZX1_SWIOTLB)
 390         depends on ARCH_DISCONTIGMEM_ENABLE
 391
 392 config NUMA
 393         bool "NUMA support"
 394         depends on !IA64_HP_SIM && !FLATMEM
 395         default y if IA64_SGI_SN2
 396         select ACPI_NUMA if ACPI
 397         help
 398           Say Y to compile the kernel to support NUMA (Non-Uniform Memory
 399           Access).  This option is for configuring high-end multiprocessor
 400           server systems.  If in doubt, say N.
 401
 402 config NODES_SHIFT
 403         int "Max num nodes shift(3-10)"
 404         range 3 10
 405         default "10"
 406         depends on NEED_MULTIPLE_NODES
 407         help
 408           This option specifies the maximum number of nodes in your SSI system.
 409           MAX_NUMNODES will be 2^(This value).
 410           If in doubt, use the default.
 411
 412 # VIRTUAL_MEM_MAP and FLAT_NODE_MEM_MAP are functionally equivalent.
 413 # VIRTUAL_MEM_MAP has been retained for historical reasons.
 414 config VIRTUAL_MEM_MAP
 415         bool "Virtual mem map"
 416         depends on !SPARSEMEM
 417         default y if !IA64_HP_SIM
 418         help
 419           Say Y to compile the kernel with support for a virtual mem map.
 420           This code also only takes effect if a memory hole of greater than
 421           1 Gb is found during boot.  You must turn this option on if you
 422           require the DISCONTIGMEM option for your machine. If you are
 423           unsure, say Y.
 424
 425 config HOLES_IN_ZONE
 426         bool
 427         default y if VIRTUAL_MEM_MAP
 428
 429 config HAVE_ARCH_EARLY_PFN_TO_NID
 430         def_bool NUMA && SPARSEMEM
 431
 432 config HAVE_ARCH_NODEDATA_EXTENSION
 433         def_bool y
 434         depends on NUMA
 435
 436 config USE_PERCPU_NUMA_NODE_ID
 437         def_bool y
 438         depends on NUMA
 439
 440 config HAVE_MEMORYLESS_NODES
 441         def_bool NUMA
 442
 443 config ARCH_PROC_KCORE_TEXT
 444         def_bool y
 445         depends on PROC_KCORE
 446
 447 config IA64_MCA_RECOVERY
 448         tristate "MCA recovery from errors other than TLB."
 449
 450 config PERFMON
 451         bool "Performance monitor support"
 452         depends on BROKEN
 453         help
 454           Selects whether support for the IA-64 performance monitor hardware
 455           is included in the kernel.  This makes some kernel data-structures a
 456           little bigger and slows down execution a bit, but it is generally
 457           a good idea to turn this on.  If you're unsure, say Y.
 458
 459 config IA64_PALINFO
 460         tristate "/proc/pal support"
 461         help
 462           If you say Y here, you are able to get PAL (Processor Abstraction
 463           Layer) information in /proc/pal.  This contains useful information
 464           about the processors in your systems, such as cache and TLB sizes
 465           and the PAL firmware version in use.
 466
 467           To use this option, you have to ensure that the "/proc file system
 468           support" (CONFIG_PROC_FS) is enabled, too.
 469
 470 config IA64_MC_ERR_INJECT
 471         tristate "MC error injection support"
 472         help
 473           Adds support for MC error injection. If enabled, the kernel
 474           will provide a sysfs interface for user applications to
 475           call MC error injection PAL procedures to inject various errors.
 476           This is a useful tool for MCA testing.
 477
 478           If you're unsure, do not select this option.
 479
 480 config SGI_SN
 481         def_bool y if (IA64_SGI_SN2 || IA64_GENERIC)
 482
 483 config IA64_ESI
 484         bool "ESI (Extensible SAL Interface) support"
 485         help
 486           If you say Y here, support is built into the kernel to
 487           make ESI calls.  ESI calls are used to support vendor-specific
 488           firmware extensions, such as the ability to inject memory-errors
 489           for test-purposes.  If you're unsure, say N.
 490
 491 config IA64_HP_AML_NFW
 492         bool "Support ACPI AML calls to native firmware"
 493         help
 494           This driver installs a global ACPI Operation Region handler for
 495           region 0xA1.  AML methods can use this OpRegion to call arbitrary
 496           native firmware functions.  The driver installs the OpRegion
 497           handler if there is an HPQ5001 device or if the user supplies
 498           the "force" module parameter, e.g., with the "aml_nfw.force"
 499           kernel command line option.
 500
 501 source "drivers/sn/Kconfig"
 502
 503 config KEXEC
 504         bool "kexec system call"
 505         depends on !IA64_HP_SIM && (!SMP || HOTPLUG_CPU)
 506         select KEXEC_CORE
 507         help
 508           kexec is a system call that implements the ability to shutdown your
 509           current kernel, and to start another kernel.  It is like a reboot
 510           but it is independent of the system firmware.   And like a reboot
 511           you can start any kernel with it, not just Linux.
 512
 513           The name comes from the similarity to the exec system call.
 514
 515           It is an ongoing process to be certain the hardware in a machine
 516           is properly shutdown, so do not be surprised if this code does not
 517           initially work for you.  As of this writing the exact hardware
 518           interface is strongly in flux, so no good recommendation can be
 519           made.
 520
 521 config CRASH_DUMP
 522           bool "kernel crash dumps"
 523           depends on IA64_MCA_RECOVERY && !IA64_HP_SIM && (!SMP || HOTPLUG_CPU)
 524           help
 525             Generate crash dump after being started by kexec.
 526
 527 source "drivers/firmware/Kconfig"
 528
 529 endmenu
 530
 531 menu "Power management and ACPI options"
 532
 533 source "kernel/power/Kconfig"
 534
 535 source "drivers/acpi/Kconfig"
 536
 537 if PM
 538 menu "CPU Frequency scaling"
 539 source "drivers/cpufreq/Kconfig"
 540 endmenu
 541 endif
 542
 543 endmenu
 544
 545 if !IA64_HP_SIM
 546
 547 menu "Bus options (PCI, PCMCIA)"
 548
 549 config PCI
 550         bool "PCI support"
 551         help
 552           Real IA-64 machines all have PCI/PCI-X/PCI Express busses.  Say Y
 553           here unless you are using a simulator without PCI support.
 554
 555 config PCI_DOMAINS
 556         def_bool PCI
 557
 558 config PCI_SYSCALL
 559         def_bool PCI
 560
 561 source "drivers/pci/Kconfig"
 562
 563 source "drivers/pcmcia/Kconfig"
 564
 565 endmenu
 566
 567 endif
 568
 569 source "arch/ia64/hp/sim/Kconfig"
 570
 571 config MSPEC
 572         tristate "Memory special operations driver"
 573         depends on IA64
 574         select IA64_UNCACHED_ALLOCATOR
 575         help
 576           If you have an ia64 and you want to enable memory special
 577           operations support (formerly known as fetchop), say Y here,
 578           otherwise say N.