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
  14         select ACPI_NUMA if NUMA
  15         select ARCH_SUPPORTS_ACPI
  16         select ACPI_SYSTEM_POWER_STATES_SUPPORT if ACPI
  17         select ARCH_MIGHT_HAVE_ACPI_PDC if ACPI
  18         select FORCE_PCI
  19         select PCI_DOMAINS if PCI
  20         select PCI_MSI
  21         select PCI_SYSCALL if PCI
  22         select HAVE_ASM_MODVERSIONS
  23         select HAVE_UNSTABLE_SCHED_CLOCK
  24         select HAVE_EXIT_THREAD
  25         select HAVE_IDE
  26         select HAVE_OPROFILE
  27         select HAVE_KPROBES
  28         select HAVE_KRETPROBES
  29         select HAVE_FTRACE_MCOUNT_RECORD
  30         select HAVE_DYNAMIC_FTRACE if (!ITANIUM)
  31         select HAVE_FUNCTION_TRACER
  32         select TTY
  33         select HAVE_ARCH_TRACEHOOK
  34         select HAVE_VIRT_CPU_ACCOUNTING
  35         select DMA_NONCOHERENT_MMAP
  36         select ARCH_HAS_SYNC_DMA_FOR_CPU
  37         select VIRT_TO_BUS
  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
  43         select GENERIC_IOMAP
  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 SWIOTLB
  51         select SYSCTL_ARCH_UNALIGN_NO_WARN
  52         select HAVE_MOD_ARCH_SPECIFIC
  53         select MODULES_USE_ELF_RELA
  54         select ARCH_USE_CMPXCHG_LOCKREF
  55         select HAVE_ARCH_AUDITSYSCALL
  56         select NEED_DMA_MAP_STATE
  57         select NEED_SG_DMA_LENGTH
  58         select NUMA if !FLATMEM
  59         default y
  60         help
  61           The Itanium Processor Family is Intel's 64-bit successor to
  62           the 32-bit X86 line.  The IA-64 Linux project has a home
  63           page at <http://www.linuxia64.org/> and a mailing list at
  64           <linux-ia64@vger.kernel.org>.
  65
  66 config 64BIT
  67         bool
  68         select ATA_NONSTANDARD if ATA
  69         default y
  70
  71 config ZONE_DMA32
  72         def_bool 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 HUGETLB_PAGE_SIZE_VARIABLE
  85         bool
  86         depends on HUGETLB_PAGE
  87         default y
  88
  89 config GENERIC_CALIBRATE_DELAY
  90         bool
  91         default y
  92
  93 config HAVE_SETUP_PER_CPU_AREA
  94         def_bool y
  95
  96 config DMI
  97         bool
  98         default y
  99         select DMI_SCAN_MACHINE_NON_EFI_FALLBACK
 100
 101 config EFI
 102         bool
 103         select UCS2_STRING
 104         default y
 105
 106 config SCHED_OMIT_FRAME_POINTER
 107         bool
 108         default y
 109
 110 config IA64_UNCACHED_ALLOCATOR
 111         bool
 112         select GENERIC_ALLOCATOR
 113
 114 config ARCH_USES_PG_UNCACHED
 115         def_bool y
 116         depends on IA64_UNCACHED_ALLOCATOR
 117
 118 config AUDIT_ARCH
 119         bool
 120         default y
 121
 122 choice
 123         prompt "Processor type"
 124         default ITANIUM
 125
 126 config ITANIUM
 127         bool "Itanium"
 128         help
 129           Select your IA-64 processor type.  The default is Itanium.
 130           This choice is safe for all IA-64 systems, but may not perform
 131           optimally on systems with, say, Itanium 2 or newer processors.
 132
 133 config MCKINLEY
 134         bool "Itanium 2"
 135         help
 136           Select this to configure for an Itanium 2 (McKinley) processor.
 137
 138 endchoice
 139
 140 choice
 141         prompt "Kernel page size"
 142         default IA64_PAGE_SIZE_16KB
 143
 144 config IA64_PAGE_SIZE_4KB
 145         bool "4KB"
 146         help
 147           This lets you select the page size of the kernel.  For best IA-64
 148           performance, a page size of 8KB or 16KB is recommended.  For best
 149           IA-32 compatibility, a page size of 4KB should be selected (the vast
 150           majority of IA-32 binaries work perfectly fine with a larger page
 151           size).  For Itanium 2 or newer systems, a page size of 64KB can also
 152           be selected.
 153
 154           4KB                For best IA-32 compatibility
 155           8KB                For best IA-64 performance
 156           16KB               For best IA-64 performance
 157           64KB               Requires Itanium 2 or newer processor.
 158
 159           If you don't know what to do, choose 16KB.
 160
 161 config IA64_PAGE_SIZE_8KB
 162         bool "8KB"
 163
 164 config IA64_PAGE_SIZE_16KB
 165         bool "16KB"
 166
 167 config IA64_PAGE_SIZE_64KB
 168         depends on !ITANIUM
 169         bool "64KB"
 170
 171 endchoice
 172
 173 source "kernel/Kconfig.hz"
 174
 175 config IA64_BRL_EMU
 176         bool
 177         depends on ITANIUM
 178         default y
 179
 180 # align cache-sensitive data to 128 bytes
 181 config IA64_L1_CACHE_SHIFT
 182         int
 183         default "7" if MCKINLEY
 184         default "6" if ITANIUM
 185
 186 config IA64_SGI_UV
 187         bool "SGI-UV support"
 188         help
 189           Selecting this option will add specific support for running on SGI
 190           UV based systems.  If you have an SGI UV system or are building a
 191           distro kernel, select this option.
 192
 193 config IA64_HP_SBA_IOMMU
 194         bool "HP SBA IOMMU support"
 195         default y
 196         help
 197           Say Y here to add support for the SBA IOMMU found on HP zx1 and
 198           sx1000 systems.  If you're unsure, answer Y.
 199
 200 config IA64_CYCLONE
 201         bool "Cyclone (EXA) Time Source support"
 202         help
 203           Say Y here to enable support for IBM EXA Cyclone time source.
 204           If you're unsure, answer N.
 205
 206 config FORCE_MAX_ZONEORDER
 207         int "MAX_ORDER (11 - 17)"  if !HUGETLB_PAGE
 208         range 11 17  if !HUGETLB_PAGE
 209         default "17" if HUGETLB_PAGE
 210         default "11"
 211
 212 config SMP
 213         bool "Symmetric multi-processing support"
 214         help
 215           This enables support for systems with more than one CPU. If you have
 216           a system with only one CPU, say N.  If you have a system with more
 217           than one CPU, say Y.
 218
 219           If you say N here, the kernel will run on single and multiprocessor
 220           systems, but will use only one CPU of a multiprocessor system.  If
 221           you say Y here, the kernel will run on many, but not all,
 222           single processor systems.  On a single processor system, the kernel
 223           will run faster if you say N here.
 224
 225           See also the SMP-HOWTO available at
 226           <http://www.tldp.org/docs.html#howto>.
 227
 228           If you don't know what to do here, say N.
 229
 230 config NR_CPUS
 231         int "Maximum number of CPUs (2-4096)"
 232         range 2 4096
 233         depends on SMP
 234         default "4096"
 235         help
 236           You should set this to the number of CPUs in your system, but
 237           keep in mind that a kernel compiled for, e.g., 2 CPUs will boot but
 238           only use 2 CPUs on a >2 CPU system.  Setting this to a value larger
 239           than 64 will cause the use of a CPU mask array, causing a small
 240           performance hit.
 241
 242 config HOTPLUG_CPU
 243         bool "Support for hot-pluggable CPUs"
 244         depends on SMP
 245         default n
 246         help
 247           Say Y here to experiment with turning CPUs off and on.  CPUs
 248           can be controlled through /sys/devices/system/cpu/cpu#.
 249           Say N if you want to disable CPU hotplug.
 250
 251 config ARCH_ENABLE_MEMORY_HOTPLUG
 252         def_bool y
 253
 254 config ARCH_ENABLE_MEMORY_HOTREMOVE
 255         def_bool y
 256
 257 config SCHED_SMT
 258         bool "SMT scheduler support"
 259         depends on SMP
 260         help
 261           Improves the CPU scheduler's decision making when dealing with
 262           Intel IA64 chips with MultiThreading at a cost of slightly increased
 263           overhead in some places. If unsure say N here.
 264
 265 config PERMIT_BSP_REMOVE
 266         bool "Support removal of Bootstrap Processor"
 267         depends on HOTPLUG_CPU
 268         default n
 269         help
 270         Say Y here if your platform SAL will support removal of BSP with HOTPLUG_CPU
 271         support.
 272
 273 config FORCE_CPEI_RETARGET
 274         bool "Force assumption that CPEI can be re-targeted"
 275         depends on PERMIT_BSP_REMOVE
 276         default n
 277         help
 278         Say Y if you need to force the assumption that CPEI can be re-targeted to
 279         any cpu in the system. This hint is available via ACPI 3.0 specifications.
 280         Tiger4 systems are capable of re-directing CPEI to any CPU other than BSP.
 281         This option it useful to enable this feature on older BIOS's as well.
 282         You can also enable this by using boot command line option force_cpei=1.
 283
 284 config ARCH_SELECT_MEMORY_MODEL
 285         def_bool y
 286
 287 config ARCH_DISCONTIGMEM_ENABLE
 288         def_bool y
 289         help
 290           Say Y to support efficient handling of discontiguous physical memory,
 291           for architectures which are either NUMA (Non-Uniform Memory Access)
 292           or have huge holes in the physical address space for other reasons.
 293           See <file:Documentation/vm/numa.rst> for more.
 294
 295 config ARCH_FLATMEM_ENABLE
 296         def_bool y
 297
 298 config ARCH_SPARSEMEM_ENABLE
 299         def_bool y
 300         depends on ARCH_DISCONTIGMEM_ENABLE
 301         select SPARSEMEM_VMEMMAP_ENABLE
 302
 303 config ARCH_DISCONTIGMEM_DEFAULT
 304         def_bool y
 305         depends on ARCH_DISCONTIGMEM_ENABLE
 306
 307 config NUMA
 308         bool "NUMA support"
 309         depends on !FLATMEM
 310         select SMP
 311         help
 312           Say Y to compile the kernel to support NUMA (Non-Uniform Memory
 313           Access).  This option is for configuring high-end multiprocessor
 314           server systems.  If in doubt, say N.
 315
 316 config NODES_SHIFT
 317         int "Max num nodes shift(3-10)"
 318         range 3 10
 319         default "10"
 320         depends on NEED_MULTIPLE_NODES
 321         help
 322           This option specifies the maximum number of nodes in your SSI system.
 323           MAX_NUMNODES will be 2^(This value).
 324           If in doubt, use the default.
 325
 326 # VIRTUAL_MEM_MAP and FLAT_NODE_MEM_MAP are functionally equivalent.
 327 # VIRTUAL_MEM_MAP has been retained for historical reasons.
 328 config VIRTUAL_MEM_MAP
 329         bool "Virtual mem map"
 330         depends on !SPARSEMEM
 331         default y
 332         help
 333           Say Y to compile the kernel with support for a virtual mem map.
 334           This code also only takes effect if a memory hole of greater than
 335           1 Gb is found during boot.  You must turn this option on if you
 336           require the DISCONTIGMEM option for your machine. If you are
 337           unsure, say Y.
 338
 339 config HOLES_IN_ZONE
 340         bool
 341         default y if VIRTUAL_MEM_MAP
 342
 343 config HAVE_ARCH_EARLY_PFN_TO_NID
 344         def_bool NUMA && SPARSEMEM
 345
 346 config HAVE_ARCH_NODEDATA_EXTENSION
 347         def_bool y
 348         depends on NUMA
 349
 350 config USE_PERCPU_NUMA_NODE_ID
 351         def_bool y
 352         depends on NUMA
 353
 354 config HAVE_MEMORYLESS_NODES
 355         def_bool NUMA
 356
 357 config ARCH_PROC_KCORE_TEXT
 358         def_bool y
 359         depends on PROC_KCORE
 360
 361 config IA64_MCA_RECOVERY
 362         tristate "MCA recovery from errors other than TLB."
 363
 364 config PERFMON
 365         bool "Performance monitor support"
 366         depends on BROKEN
 367         help
 368           Selects whether support for the IA-64 performance monitor hardware
 369           is included in the kernel.  This makes some kernel data-structures a
 370           little bigger and slows down execution a bit, but it is generally
 371           a good idea to turn this on.  If you're unsure, say Y.
 372
 373 config IA64_PALINFO
 374         tristate "/proc/pal support"
 375         help
 376           If you say Y here, you are able to get PAL (Processor Abstraction
 377           Layer) information in /proc/pal.  This contains useful information
 378           about the processors in your systems, such as cache and TLB sizes
 379           and the PAL firmware version in use.
 380
 381           To use this option, you have to ensure that the "/proc file system
 382           support" (CONFIG_PROC_FS) is enabled, too.
 383
 384 config IA64_MC_ERR_INJECT
 385         tristate "MC error injection support"
 386         help
 387           Adds support for MC error injection. If enabled, the kernel
 388           will provide a sysfs interface for user applications to
 389           call MC error injection PAL procedures to inject various errors.
 390           This is a useful tool for MCA testing.
 391
 392           If you're unsure, do not select this option.
 393
 394 config IA64_ESI
 395         bool "ESI (Extensible SAL Interface) support"
 396         help
 397           If you say Y here, support is built into the kernel to
 398           make ESI calls.  ESI calls are used to support vendor-specific
 399           firmware extensions, such as the ability to inject memory-errors
 400           for test-purposes.  If you're unsure, say N.
 401
 402 config IA64_HP_AML_NFW
 403         bool "Support ACPI AML calls to native firmware"
 404         help
 405           This driver installs a global ACPI Operation Region handler for
 406           region 0xA1.  AML methods can use this OpRegion to call arbitrary
 407           native firmware functions.  The driver installs the OpRegion
 408           handler if there is an HPQ5001 device or if the user supplies
 409           the "force" module parameter, e.g., with the "aml_nfw.force"
 410           kernel command line option.
 411
 412 config KEXEC
 413         bool "kexec system call"
 414         depends on !SMP || HOTPLUG_CPU
 415         select KEXEC_CORE
 416         help
 417           kexec is a system call that implements the ability to shutdown your
 418           current kernel, and to start another kernel.  It is like a reboot
 419           but it is independent of the system firmware.   And like a reboot
 420           you can start any kernel with it, not just Linux.
 421
 422           The name comes from the similarity to the exec system call.
 423
 424           It is an ongoing process to be certain the hardware in a machine
 425           is properly shutdown, so do not be surprised if this code does not
 426           initially work for you.  As of this writing the exact hardware
 427           interface is strongly in flux, so no good recommendation can be
 428           made.
 429
 430 config CRASH_DUMP
 431           bool "kernel crash dumps"
 432           depends on IA64_MCA_RECOVERY && (!SMP || HOTPLUG_CPU)
 433           help
 434             Generate crash dump after being started by kexec.
 435
 436 source "drivers/firmware/Kconfig"
 437
 438 endmenu
 439
 440 menu "Power management and ACPI options"
 441
 442 source "kernel/power/Kconfig"
 443
 444 source "drivers/acpi/Kconfig"
 445
 446 if PM
 447 menu "CPU Frequency scaling"
 448 source "drivers/cpufreq/Kconfig"
 449 endmenu
 450 endif
 451
 452 endmenu
 453
 454 config MSPEC
 455         tristate "Memory special operations driver"
 456         depends on IA64
 457         select IA64_UNCACHED_ALLOCATOR
 458         help
 459           If you have an ia64 and you want to enable memory special
 460           operations support (formerly known as fetchop), say Y here,
 461           otherwise say N.