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_MEMBLOCK_NODE_MAP
  35         select HAVE_VIRT_CPU_ACCOUNTING
  36         select ARCH_HAS_DMA_COHERENT_TO_PFN
  37         select ARCH_HAS_SYNC_DMA_FOR_CPU
  38         select VIRT_TO_BUS
  39         select GENERIC_IRQ_PROBE
  40         select GENERIC_PENDING_IRQ if SMP
  41         select GENERIC_IRQ_SHOW
  42         select GENERIC_IRQ_LEGACY
  43         select ARCH_HAVE_NMI_SAFE_CMPXCHG
  44         select GENERIC_IOMAP
  45         select GENERIC_SMP_IDLE_THREAD
  46         select ARCH_TASK_STRUCT_ON_STACK
  47         select ARCH_TASK_STRUCT_ALLOCATOR
  48         select ARCH_THREAD_STACK_ALLOCATOR
  49         select ARCH_CLOCKSOURCE_DATA
  50         select GENERIC_TIME_VSYSCALL
  51         select SWIOTLB
  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         default y
  61         help
  62           The Itanium Processor Family is Intel's 64-bit successor to
  63           the 32-bit X86 line.  The IA-64 Linux project has a home
  64           page at <http://www.linuxia64.org/> and a mailing list at
  65           <linux-ia64@vger.kernel.org>.
  66
  67 config 64BIT
  68         bool
  69         select ATA_NONSTANDARD if ATA
  70         default y
  71
  72 config ZONE_DMA32
  73         def_bool y
  74
  75 config MMU
  76         bool
  77         default y
  78
  79 config STACKTRACE_SUPPORT
  80         def_bool y
  81
  82 config GENERIC_LOCKBREAK
  83         def_bool n
  84
  85 config HUGETLB_PAGE_SIZE_VARIABLE
  86         bool
  87         depends on HUGETLB_PAGE
  88         default y
  89
  90 config GENERIC_CALIBRATE_DELAY
  91         bool
  92         default y
  93
  94 config HAVE_SETUP_PER_CPU_AREA
  95         def_bool y
  96
  97 config DMI
  98         bool
  99         default y
 100         select DMI_SCAN_MACHINE_NON_EFI_FALLBACK
 101
 102 config EFI
 103         bool
 104         select UCS2_STRING
 105         default y
 106
 107 config SCHED_OMIT_FRAME_POINTER
 108         bool
 109         default y
 110
 111 config IA64_UNCACHED_ALLOCATOR
 112         bool
 113         select GENERIC_ALLOCATOR
 114
 115 config ARCH_USES_PG_UNCACHED
 116         def_bool y
 117         depends on IA64_UNCACHED_ALLOCATOR
 118
 119 config AUDIT_ARCH
 120         bool
 121         default y
 122
 123 choice
 124         prompt "Processor type"
 125         default ITANIUM
 126
 127 config ITANIUM
 128         bool "Itanium"
 129         help
 130           Select your IA-64 processor type.  The default is Itanium.
 131           This choice is safe for all IA-64 systems, but may not perform
 132           optimally on systems with, say, Itanium 2 or newer processors.
 133
 134 config MCKINLEY
 135         bool "Itanium 2"
 136         help
 137           Select this to configure for an Itanium 2 (McKinley) processor.
 138
 139 endchoice
 140
 141 choice
 142         prompt "Kernel page size"
 143         default IA64_PAGE_SIZE_16KB
 144
 145 config IA64_PAGE_SIZE_4KB
 146         bool "4KB"
 147         help
 148           This lets you select the page size of the kernel.  For best IA-64
 149           performance, a page size of 8KB or 16KB is recommended.  For best
 150           IA-32 compatibility, a page size of 4KB should be selected (the vast
 151           majority of IA-32 binaries work perfectly fine with a larger page
 152           size).  For Itanium 2 or newer systems, a page size of 64KB can also
 153           be selected.
 154
 155           4KB                For best IA-32 compatibility
 156           8KB                For best IA-64 performance
 157           16KB               For best IA-64 performance
 158           64KB               Requires Itanium 2 or newer processor.
 159
 160           If you don't know what to do, choose 16KB.
 161
 162 config IA64_PAGE_SIZE_8KB
 163         bool "8KB"
 164
 165 config IA64_PAGE_SIZE_16KB
 166         bool "16KB"
 167
 168 config IA64_PAGE_SIZE_64KB
 169         depends on !ITANIUM
 170         bool "64KB"
 171
 172 endchoice
 173
 174 source "kernel/Kconfig.hz"
 175
 176 config IA64_BRL_EMU
 177         bool
 178         depends on ITANIUM
 179         default y
 180
 181 # align cache-sensitive data to 128 bytes
 182 config IA64_L1_CACHE_SHIFT
 183         int
 184         default "7" if MCKINLEY
 185         default "6" if ITANIUM
 186
 187 config IA64_SGI_UV
 188         bool "SGI-UV support"
 189         help
 190           Selecting this option will add specific support for running on SGI
 191           UV based systems.  If you have an SGI UV system or are building a
 192           distro kernel, select this option.
 193
 194 config IA64_HP_SBA_IOMMU
 195         bool "HP SBA IOMMU support"
 196         default y
 197         help
 198           Say Y here to add support for the SBA IOMMU found on HP zx1 and
 199           sx1000 systems.  If you're unsure, answer Y.
 200
 201 config IA64_CYCLONE
 202         bool "Cyclone (EXA) Time Source support"
 203         help
 204           Say Y here to enable support for IBM EXA Cyclone time source.
 205           If you're unsure, answer N.
 206
 207 config FORCE_MAX_ZONEORDER
 208         int "MAX_ORDER (11 - 17)"  if !HUGETLB_PAGE
 209         range 11 17  if !HUGETLB_PAGE
 210         default "17" if HUGETLB_PAGE
 211         default "11"
 212
 213 config SMP
 214         bool "Symmetric multi-processing support"
 215         help
 216           This enables support for systems with more than one CPU. If you have
 217           a system with only one CPU, say N.  If you have a system with more
 218           than one CPU, say Y.
 219
 220           If you say N here, the kernel will run on single and multiprocessor
 221           systems, but will use only one CPU of a multiprocessor system.  If
 222           you say Y here, the kernel will run on many, but not all,
 223           single processor systems.  On a single processor system, the kernel
 224           will run faster if you say N here.
 225
 226           See also the SMP-HOWTO available at
 227           <http://www.tldp.org/docs.html#howto>.
 228
 229           If you don't know what to do here, say N.
 230
 231 config NR_CPUS
 232         int "Maximum number of CPUs (2-4096)"
 233         range 2 4096
 234         depends on SMP
 235         default "4096"
 236         help
 237           You should set this to the number of CPUs in your system, but
 238           keep in mind that a kernel compiled for, e.g., 2 CPUs will boot but
 239           only use 2 CPUs on a >2 CPU system.  Setting this to a value larger
 240           than 64 will cause the use of a CPU mask array, causing a small
 241           performance hit.
 242
 243 config HOTPLUG_CPU
 244         bool "Support for hot-pluggable CPUs"
 245         depends on SMP
 246         default n
 247         ---help---
 248           Say Y here to experiment with turning CPUs off and on.  CPUs
 249           can be controlled through /sys/devices/system/cpu/cpu#.
 250           Say N if you want to disable CPU hotplug.
 251
 252 config ARCH_ENABLE_MEMORY_HOTPLUG
 253         def_bool y
 254
 255 config ARCH_ENABLE_MEMORY_HOTREMOVE
 256         def_bool y
 257
 258 config SCHED_SMT
 259         bool "SMT scheduler support"
 260         depends on SMP
 261         help
 262           Improves the CPU scheduler's decision making when dealing with
 263           Intel IA64 chips with MultiThreading at a cost of slightly increased
 264           overhead in some places. If unsure say N here.
 265
 266 config PERMIT_BSP_REMOVE
 267         bool "Support removal of Bootstrap Processor"
 268         depends on HOTPLUG_CPU
 269         default n
 270         ---help---
 271         Say Y here if your platform SAL will support removal of BSP with HOTPLUG_CPU
 272         support.
 273
 274 config FORCE_CPEI_RETARGET
 275         bool "Force assumption that CPEI can be re-targeted"
 276         depends on PERMIT_BSP_REMOVE
 277         default n
 278         ---help---
 279         Say Y if you need to force the assumption that CPEI can be re-targeted to
 280         any cpu in the system. This hint is available via ACPI 3.0 specifications.
 281         Tiger4 systems are capable of re-directing CPEI to any CPU other than BSP.
 282         This option it useful to enable this feature on older BIOS's as well.
 283         You can also enable this by using boot command line option force_cpei=1.
 284
 285 config ARCH_SELECT_MEMORY_MODEL
 286         def_bool y
 287
 288 config ARCH_DISCONTIGMEM_ENABLE
 289         def_bool y
 290         help
 291           Say Y to support efficient handling of discontiguous physical memory,
 292           for architectures which are either NUMA (Non-Uniform Memory Access)
 293           or have huge holes in the physical address space for other reasons.
 294           See <file:Documentation/vm/numa.rst> for more.
 295
 296 config ARCH_FLATMEM_ENABLE
 297         def_bool y
 298
 299 config ARCH_SPARSEMEM_ENABLE
 300         def_bool y
 301         depends on ARCH_DISCONTIGMEM_ENABLE
 302         select SPARSEMEM_VMEMMAP_ENABLE
 303
 304 config ARCH_DISCONTIGMEM_DEFAULT
 305         def_bool y
 306         depends on ARCH_DISCONTIGMEM_ENABLE
 307
 308 config NUMA
 309         bool "NUMA support"
 310         depends on !FLATMEM
 311         select SMP
 312         help
 313           Say Y to compile the kernel to support NUMA (Non-Uniform Memory
 314           Access).  This option is for configuring high-end multiprocessor
 315           server systems.  If in doubt, say N.
 316
 317 config NODES_SHIFT
 318         int "Max num nodes shift(3-10)"
 319         range 3 10
 320         default "10"
 321         depends on NEED_MULTIPLE_NODES
 322         help
 323           This option specifies the maximum number of nodes in your SSI system.
 324           MAX_NUMNODES will be 2^(This value).
 325           If in doubt, use the default.
 326
 327 # VIRTUAL_MEM_MAP and FLAT_NODE_MEM_MAP are functionally equivalent.
 328 # VIRTUAL_MEM_MAP has been retained for historical reasons.
 329 config VIRTUAL_MEM_MAP
 330         bool "Virtual mem map"
 331         depends on !SPARSEMEM
 332         default y
 333         help
 334           Say Y to compile the kernel with support for a virtual mem map.
 335           This code also only takes effect if a memory hole of greater than
 336           1 Gb is found during boot.  You must turn this option on if you
 337           require the DISCONTIGMEM option for your machine. If you are
 338           unsure, say Y.
 339
 340 config HOLES_IN_ZONE
 341         bool
 342         default y if VIRTUAL_MEM_MAP
 343
 344 config HAVE_ARCH_EARLY_PFN_TO_NID
 345         def_bool NUMA && SPARSEMEM
 346
 347 config HAVE_ARCH_NODEDATA_EXTENSION
 348         def_bool y
 349         depends on NUMA
 350
 351 config USE_PERCPU_NUMA_NODE_ID
 352         def_bool y
 353         depends on NUMA
 354
 355 config HAVE_MEMORYLESS_NODES
 356         def_bool NUMA
 357
 358 config ARCH_PROC_KCORE_TEXT
 359         def_bool y
 360         depends on PROC_KCORE
 361
 362 config IA64_MCA_RECOVERY
 363         tristate "MCA recovery from errors other than TLB."
 364
 365 config PERFMON
 366         bool "Performance monitor support"
 367         depends on BROKEN
 368         help
 369           Selects whether support for the IA-64 performance monitor hardware
 370           is included in the kernel.  This makes some kernel data-structures a
 371           little bigger and slows down execution a bit, but it is generally
 372           a good idea to turn this on.  If you're unsure, say Y.
 373
 374 config IA64_PALINFO
 375         tristate "/proc/pal support"
 376         help
 377           If you say Y here, you are able to get PAL (Processor Abstraction
 378           Layer) information in /proc/pal.  This contains useful information
 379           about the processors in your systems, such as cache and TLB sizes
 380           and the PAL firmware version in use.
 381
 382           To use this option, you have to ensure that the "/proc file system
 383           support" (CONFIG_PROC_FS) is enabled, too.
 384
 385 config IA64_MC_ERR_INJECT
 386         tristate "MC error injection support"
 387         help
 388           Adds support for MC error injection. If enabled, the kernel
 389           will provide a sysfs interface for user applications to
 390           call MC error injection PAL procedures to inject various errors.
 391           This is a useful tool for MCA testing.
 392
 393           If you're unsure, do not select this option.
 394
 395 config IA64_ESI
 396         bool "ESI (Extensible SAL Interface) support"
 397         help
 398           If you say Y here, support is built into the kernel to
 399           make ESI calls.  ESI calls are used to support vendor-specific
 400           firmware extensions, such as the ability to inject memory-errors
 401           for test-purposes.  If you're unsure, say N.
 402
 403 config IA64_HP_AML_NFW
 404         bool "Support ACPI AML calls to native firmware"
 405         help
 406           This driver installs a global ACPI Operation Region handler for
 407           region 0xA1.  AML methods can use this OpRegion to call arbitrary
 408           native firmware functions.  The driver installs the OpRegion
 409           handler if there is an HPQ5001 device or if the user supplies
 410           the "force" module parameter, e.g., with the "aml_nfw.force"
 411           kernel command line option.
 412
 413 config KEXEC
 414         bool "kexec system call"
 415         depends on !SMP || HOTPLUG_CPU
 416         select KEXEC_CORE
 417         help
 418           kexec is a system call that implements the ability to shutdown your
 419           current kernel, and to start another kernel.  It is like a reboot
 420           but it is independent of the system firmware.   And like a reboot
 421           you can start any kernel with it, not just Linux.
 422
 423           The name comes from the similarity to the exec system call.
 424
 425           It is an ongoing process to be certain the hardware in a machine
 426           is properly shutdown, so do not be surprised if this code does not
 427           initially work for you.  As of this writing the exact hardware
 428           interface is strongly in flux, so no good recommendation can be
 429           made.
 430
 431 config CRASH_DUMP
 432           bool "kernel crash dumps"
 433           depends on IA64_MCA_RECOVERY && (!SMP || HOTPLUG_CPU)
 434           help
 435             Generate crash dump after being started by kexec.
 436
 437 source "drivers/firmware/Kconfig"
 438
 439 endmenu
 440
 441 menu "Power management and ACPI options"
 442
 443 source "kernel/power/Kconfig"
 444
 445 source "drivers/acpi/Kconfig"
 446
 447 if PM
 448 menu "CPU Frequency scaling"
 449 source "drivers/cpufreq/Kconfig"
 450 endmenu
 451 endif
 452
 453 endmenu
 454
 455 config MSPEC
 456         tristate "Memory special operations driver"
 457         depends on IA64
 458         select IA64_UNCACHED_ALLOCATOR
 459         help
 460           If you have an ia64 and you want to enable memory special
 461           operations support (formerly known as fetchop), say Y here,
 462           otherwise say N.