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 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
  22         select HAVE_IDE
  23         select HAVE_OPROFILE
  24         select HAVE_KPROBES
  25         select HAVE_KRETPROBES
  26         select HAVE_FTRACE_MCOUNT_RECORD
  27         select HAVE_DYNAMIC_FTRACE if (!ITANIUM)
  28         select HAVE_FUNCTION_TRACER
  29         select TTY
  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
  35         select VIRT_TO_BUS
  36         select ARCH_DISCARD_MEMBLOCK
  37         select GENERIC_IRQ_PROBE
  38         select GENERIC_PENDING_IRQ if SMP
  39         select GENERIC_IRQ_SHOW
  40         select GENERIC_IRQ_LEGACY
  41         select ARCH_HAVE_NMI_SAFE_CMPXCHG
  42         select GENERIC_IOMAP
  43         select GENERIC_SMP_IDLE_THREAD
  44         select ARCH_TASK_STRUCT_ON_STACK
  45         select ARCH_TASK_STRUCT_ALLOCATOR
  46         select ARCH_THREAD_STACK_ALLOCATOR
  47         select ARCH_CLOCKSOURCE_DATA
  48         select GENERIC_TIME_VSYSCALL
  49         select SYSCTL_ARCH_UNALIGN_NO_WARN
  50         select HAVE_MOD_ARCH_SPECIFIC
  51         select MODULES_USE_ELF_RELA
  52         select ARCH_USE_CMPXCHG_LOCKREF
  53         select HAVE_ARCH_AUDITSYSCALL
  54         select NEED_DMA_MAP_STATE
  55         select NEED_SG_DMA_LENGTH
  56         default y
  57         help
  58           The Itanium Processor Family is Intel's 64-bit successor to
  59           the 32-bit X86 line.  The IA-64 Linux project has a home
  60           page at <http://www.linuxia64.org/> and a mailing list at
  61           <linux-ia64@vger.kernel.org>.
  62
  63 config 64BIT
  64         bool
  65         select ATA_NONSTANDARD if ATA
  66         default y
  67
  68 config ZONE_DMA32
  69         def_bool y
  70         depends on !IA64_SGI_SN2
  71
  72 config QUICKLIST
  73         bool
  74         default y
  75
  76 config MMU
  77         bool
  78         default y
  79
  80 config STACKTRACE_SUPPORT
  81         def_bool y
  82
  83 config GENERIC_LOCKBREAK
  84         def_bool n
  85
  86 config RWSEM_XCHGADD_ALGORITHM
  87         bool
  88         default y
  89
  90 config HUGETLB_PAGE_SIZE_VARIABLE
  91         bool
  92         depends on HUGETLB_PAGE
  93         default y
  94
  95 config GENERIC_CALIBRATE_DELAY
  96         bool
  97         default y
  98
  99 config HAVE_SETUP_PER_CPU_AREA
 100         def_bool y
 101
 102 config DMI
 103         bool
 104         default y
 105         select DMI_SCAN_MACHINE_NON_EFI_FALLBACK
 106
 107 config EFI
 108         bool
 109         select UCS2_STRING
 110         default y
 111
 112 config SCHED_OMIT_FRAME_POINTER
 113         bool
 114         default y
 115
 116 config IA64_UNCACHED_ALLOCATOR
 117         bool
 118         select GENERIC_ALLOCATOR
 119
 120 config ARCH_USES_PG_UNCACHED
 121         def_bool y
 122         depends on IA64_UNCACHED_ALLOCATOR
 123
 124 config AUDIT_ARCH
 125         bool
 126         default y
 127
 128 choice
 129         prompt "System type"
 130         default IA64_GENERIC
 131
 132 config IA64_GENERIC
 133         bool "generic"
 134         select NUMA
 135         select ACPI_NUMA
 136         select SWIOTLB
 137         select PCI_MSI
 138         help
 139           This selects the system type of your hardware.  A "generic" kernel
 140           will run on any supported IA-64 system.  However, if you configure
 141           a kernel for your specific system, it will be faster and smaller.
 142
 143           generic               For any supported IA-64 system
 144           DIG-compliant         For DIG ("Developer's Interface Guide") compliant systems
 145           DIG+Intel+IOMMU       For DIG systems with Intel IOMMU
 146           HP-zx1/sx1000         For HP systems
 147           HP-zx1/sx1000+swiotlb For HP systems with (broken) DMA-constrained devices.
 148           SGI-SN2               For SGI Altix systems
 149           SGI-UV                For SGI UV systems
 150           Ski-simulator         For the HP simulator <http://www.hpl.hp.com/research/linux/ski/>
 151
 152           If you don't know what to do, choose "generic".
 153
 154 config IA64_DIG
 155         bool "DIG-compliant"
 156         select SWIOTLB
 157
 158 config IA64_DIG_VTD
 159         bool "DIG+Intel+IOMMU"
 160         select INTEL_IOMMU
 161         select PCI_MSI
 162
 163 config IA64_HP_ZX1
 164         bool "HP-zx1/sx1000"
 165         help
 166           Build a kernel that runs on HP zx1 and sx1000 systems.  This adds
 167           support for the HP I/O MMU.
 168
 169 config IA64_HP_ZX1_SWIOTLB
 170         bool "HP-zx1/sx1000 with software I/O TLB"
 171         select SWIOTLB
 172         help
 173           Build a kernel that runs on HP zx1 and sx1000 systems even when they
 174           have broken PCI devices which cannot DMA to full 32 bits.  Apart
 175           from support for the HP I/O MMU, this includes support for the software
 176           I/O TLB, which allows supporting the broken devices at the expense of
 177           wasting some kernel memory (about 2MB by default).
 178
 179 config IA64_SGI_SN2
 180         bool "SGI-SN2"
 181         select NUMA
 182         select ACPI_NUMA
 183         help
 184           Selecting this option will optimize the kernel for use on sn2 based
 185           systems, but the resulting kernel binary will not run on other
 186           types of ia64 systems.  If you have an SGI Altix system, it's safe
 187           to select this option.  If in doubt, select ia64 generic support
 188           instead.
 189
 190 config IA64_SGI_UV
 191         bool "SGI-UV"
 192         select NUMA
 193         select ACPI_NUMA
 194         select SWIOTLB
 195         help
 196           Selecting this option will optimize the kernel for use on UV based
 197           systems, but the resulting kernel binary will not run on other
 198           types of ia64 systems.  If you have an SGI UV system, it's safe
 199           to select this option.  If in doubt, select ia64 generic support
 200           instead.
 201
 202 config IA64_HP_SIM
 203         bool "Ski-simulator"
 204         select SWIOTLB
 205         depends on !PM
 206
 207 endchoice
 208
 209 choice
 210         prompt "Processor type"
 211         default ITANIUM
 212
 213 config ITANIUM
 214         bool "Itanium"
 215         help
 216           Select your IA-64 processor type.  The default is Itanium.
 217           This choice is safe for all IA-64 systems, but may not perform
 218           optimally on systems with, say, Itanium 2 or newer processors.
 219
 220 config MCKINLEY
 221         bool "Itanium 2"
 222         help
 223           Select this to configure for an Itanium 2 (McKinley) processor.
 224
 225 endchoice
 226
 227 choice
 228         prompt "Kernel page size"
 229         default IA64_PAGE_SIZE_16KB
 230
 231 config IA64_PAGE_SIZE_4KB
 232         bool "4KB"
 233         help
 234           This lets you select the page size of the kernel.  For best IA-64
 235           performance, a page size of 8KB or 16KB is recommended.  For best
 236           IA-32 compatibility, a page size of 4KB should be selected (the vast
 237           majority of IA-32 binaries work perfectly fine with a larger page
 238           size).  For Itanium 2 or newer systems, a page size of 64KB can also
 239           be selected.
 240
 241           4KB                For best IA-32 compatibility
 242           8KB                For best IA-64 performance
 243           16KB               For best IA-64 performance
 244           64KB               Requires Itanium 2 or newer processor.
 245
 246           If you don't know what to do, choose 16KB.
 247
 248 config IA64_PAGE_SIZE_8KB
 249         bool "8KB"
 250
 251 config IA64_PAGE_SIZE_16KB
 252         bool "16KB"
 253
 254 config IA64_PAGE_SIZE_64KB
 255         depends on !ITANIUM
 256         bool "64KB"
 257
 258 endchoice
 259
 260 if IA64_HP_SIM
 261 config HZ
 262         default 32
 263 endif
 264
 265 if !IA64_HP_SIM
 266 source "kernel/Kconfig.hz"
 267 endif
 268
 269 config IA64_BRL_EMU
 270         bool
 271         depends on ITANIUM
 272         default y
 273
 274 # align cache-sensitive data to 128 bytes
 275 config IA64_L1_CACHE_SHIFT
 276         int
 277         default "7" if MCKINLEY
 278         default "6" if ITANIUM
 279
 280 config IA64_CYCLONE
 281         bool "Cyclone (EXA) Time Source support"
 282         help
 283           Say Y here to enable support for IBM EXA Cyclone time source.
 284           If you're unsure, answer N.
 285
 286 config IOSAPIC
 287         bool
 288         depends on !IA64_HP_SIM
 289         default y
 290
 291 config FORCE_MAX_ZONEORDER
 292         int "MAX_ORDER (11 - 17)"  if !HUGETLB_PAGE
 293         range 11 17  if !HUGETLB_PAGE
 294         default "17" if HUGETLB_PAGE
 295         default "11"
 296
 297 config SMP
 298         bool "Symmetric multi-processing support"
 299         help
 300           This enables support for systems with more than one CPU. If you have
 301           a system with only one CPU, say N.  If you have a system with more
 302           than one CPU, say Y.
 303
 304           If you say N here, the kernel will run on single and multiprocessor
 305           systems, but will use only one CPU of a multiprocessor system.  If
 306           you say Y here, the kernel will run on many, but not all,
 307           single processor systems.  On a single processor system, the kernel
 308           will run faster if you say N here.
 309
 310           See also the SMP-HOWTO available at
 311           <http://www.tldp.org/docs.html#howto>.
 312
 313           If you don't know what to do here, say N.
 314
 315 config NR_CPUS
 316         int "Maximum number of CPUs (2-4096)"
 317         range 2 4096
 318         depends on SMP
 319         default "4096"
 320         help
 321           You should set this to the number of CPUs in your system, but
 322           keep in mind that a kernel compiled for, e.g., 2 CPUs will boot but
 323           only use 2 CPUs on a >2 CPU system.  Setting this to a value larger
 324           than 64 will cause the use of a CPU mask array, causing a small
 325           performance hit.
 326
 327 config HOTPLUG_CPU
 328         bool "Support for hot-pluggable CPUs"
 329         depends on SMP
 330         default n
 331         ---help---
 332           Say Y here to experiment with turning CPUs off and on.  CPUs
 333           can be controlled through /sys/devices/system/cpu/cpu#.
 334           Say N if you want to disable CPU hotplug.
 335
 336 config ARCH_ENABLE_MEMORY_HOTPLUG
 337         def_bool y
 338
 339 config ARCH_ENABLE_MEMORY_HOTREMOVE
 340         def_bool y
 341
 342 config SCHED_SMT
 343         bool "SMT scheduler support"
 344         depends on SMP
 345         help
 346           Improves the CPU scheduler's decision making when dealing with
 347           Intel IA64 chips with MultiThreading at a cost of slightly increased
 348           overhead in some places. If unsure say N here.
 349
 350 config PERMIT_BSP_REMOVE
 351         bool "Support removal of Bootstrap Processor"
 352         depends on HOTPLUG_CPU
 353         default n
 354         ---help---
 355         Say Y here if your platform SAL will support removal of BSP with HOTPLUG_CPU
 356         support.
 357
 358 config FORCE_CPEI_RETARGET
 359         bool "Force assumption that CPEI can be re-targeted"
 360         depends on PERMIT_BSP_REMOVE
 361         default n
 362         ---help---
 363         Say Y if you need to force the assumption that CPEI can be re-targeted to
 364         any cpu in the system. This hint is available via ACPI 3.0 specifications.
 365         Tiger4 systems are capable of re-directing CPEI to any CPU other than BSP.
 366         This option it useful to enable this feature on older BIOS's as well.
 367         You can also enable this by using boot command line option force_cpei=1.
 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 source "arch/ia64/hp/sim/Kconfig"
 546
 547 config MSPEC
 548         tristate "Memory special operations driver"
 549         depends on IA64
 550         select IA64_UNCACHED_ALLOCATOR
 551         help
 552           If you have an ia64 and you want to enable memory special
 553           operations support (formerly known as fetchop), say Y here,
 554           otherwise say N.