1# 2# For a description of the syntax of this configuration file, 3# see Documentation/kbuild/kconfig-language.txt. 4# 5 6mainmenu "IA-64 Linux Kernel Configuration" 7 8source "init/Kconfig" 9 10menu "Processor type and features" 11 12config IA64 13 bool 14 select PCI if (!IA64_HP_SIM) 15 select ACPI if (!IA64_HP_SIM) 16 select PM if (!IA64_HP_SIM) 17 select ARCH_SUPPORTS_MSI 18 default y 19 help 20 The Itanium Processor Family is Intel's 64-bit successor to 21 the 32-bit X86 line. The IA-64 Linux project has a home 22 page at <http://www.linuxia64.org/> and a mailing list at 23 <linux-ia64@vger.kernel.org>. 24 25config 64BIT 26 bool 27 select ATA_NONSTANDARD if ATA 28 default y 29 30config ZONE_DMA 31 def_bool y 32 depends on !IA64_SGI_SN2 33 34config QUICKLIST 35 bool 36 default y 37 38config MMU 39 bool 40 default y 41 42config SWIOTLB 43 bool 44 45config RWSEM_XCHGADD_ALGORITHM 46 bool 47 default y 48 49config ARCH_HAS_ILOG2_U32 50 bool 51 default n 52 53config ARCH_HAS_ILOG2_U64 54 bool 55 default n 56 57config GENERIC_FIND_NEXT_BIT 58 bool 59 default y 60 61config GENERIC_CALIBRATE_DELAY 62 bool 63 default y 64 65config TIME_INTERPOLATION 66 bool 67 default y 68 69config DMI 70 bool 71 default y 72 73config EFI 74 bool 75 default y 76 77config GENERIC_IOMAP 78 bool 79 default y 80 81config SCHED_NO_NO_OMIT_FRAME_POINTER 82 bool 83 default y 84 85config IA64_UNCACHED_ALLOCATOR 86 bool 87 select GENERIC_ALLOCATOR 88 89config AUDIT_ARCH 90 bool 91 default y 92 93choice 94 prompt "System type" 95 default IA64_GENERIC 96 97config IA64_GENERIC 98 bool "generic" 99 select NUMA 100 select ACPI_NUMA 101 select SWIOTLB 102 help 103 This selects the system type of your hardware. A "generic" kernel 104 will run on any supported IA-64 system. However, if you configure 105 a kernel for your specific system, it will be faster and smaller. 106 107 generic For any supported IA-64 system 108 DIG-compliant For DIG ("Developer's Interface Guide") compliant systems 109 HP-zx1/sx1000 For HP systems 110 HP-zx1/sx1000+swiotlb For HP systems with (broken) DMA-constrained devices. 111 SGI-SN2 For SGI Altix systems 112 Ski-simulator For the HP simulator <http://www.hpl.hp.com/research/linux/ski/> 113 114 If you don't know what to do, choose "generic". 115 116config IA64_DIG 117 bool "DIG-compliant" 118 select SWIOTLB 119 120config IA64_HP_ZX1 121 bool "HP-zx1/sx1000" 122 help 123 Build a kernel that runs on HP zx1 and sx1000 systems. This adds 124 support for the HP I/O MMU. 125 126config IA64_HP_ZX1_SWIOTLB 127 bool "HP-zx1/sx1000 with software I/O TLB" 128 select SWIOTLB 129 help 130 Build a kernel that runs on HP zx1 and sx1000 systems even when they 131 have broken PCI devices which cannot DMA to full 32 bits. Apart 132 from support for the HP I/O MMU, this includes support for the software 133 I/O TLB, which allows supporting the broken devices at the expense of 134 wasting some kernel memory (about 2MB by default). 135 136config IA64_SGI_SN2 137 bool "SGI-SN2" 138 help 139 Selecting this option will optimize the kernel for use on sn2 based 140 systems, but the resulting kernel binary will not run on other 141 types of ia64 systems. If you have an SGI Altix system, it's safe 142 to select this option. If in doubt, select ia64 generic support 143 instead. 144 145config IA64_HP_SIM 146 bool "Ski-simulator" 147 select SWIOTLB 148 149endchoice 150 151choice 152 prompt "Processor type" 153 default ITANIUM 154 155config ITANIUM 156 bool "Itanium" 157 help 158 Select your IA-64 processor type. The default is Itanium. 159 This choice is safe for all IA-64 systems, but may not perform 160 optimally on systems with, say, Itanium 2 or newer processors. 161 162config MCKINLEY 163 bool "Itanium 2" 164 help 165 Select this to configure for an Itanium 2 (McKinley) processor. 166 167endchoice 168 169choice 170 prompt "Kernel page size" 171 default IA64_PAGE_SIZE_16KB 172 173config IA64_PAGE_SIZE_4KB 174 bool "4KB" 175 help 176 This lets you select the page size of the kernel. For best IA-64 177 performance, a page size of 8KB or 16KB is recommended. For best 178 IA-32 compatibility, a page size of 4KB should be selected (the vast 179 majority of IA-32 binaries work perfectly fine with a larger page 180 size). For Itanium 2 or newer systems, a page size of 64KB can also 181 be selected. 182 183 4KB For best IA-32 compatibility 184 8KB For best IA-64 performance 185 16KB For best IA-64 performance 186 64KB Requires Itanium 2 or newer processor. 187 188 If you don't know what to do, choose 16KB. 189 190config IA64_PAGE_SIZE_8KB 191 bool "8KB" 192 193config IA64_PAGE_SIZE_16KB 194 bool "16KB" 195 196config IA64_PAGE_SIZE_64KB 197 depends on !ITANIUM 198 bool "64KB" 199 200endchoice 201 202choice 203 prompt "Page Table Levels" 204 default PGTABLE_3 205 206config PGTABLE_3 207 bool "3 Levels" 208 209config PGTABLE_4 210 depends on !IA64_PAGE_SIZE_64KB 211 bool "4 Levels" 212 213endchoice 214 215source kernel/Kconfig.hz 216 217config IA64_BRL_EMU 218 bool 219 depends on ITANIUM 220 default y 221 222# align cache-sensitive data to 128 bytes 223config IA64_L1_CACHE_SHIFT 224 int 225 default "7" if MCKINLEY 226 default "6" if ITANIUM 227 228config IA64_CYCLONE 229 bool "Cyclone (EXA) Time Source support" 230 help 231 Say Y here to enable support for IBM EXA Cyclone time source. 232 If you're unsure, answer N. 233 234config IOSAPIC 235 bool 236 depends on !IA64_HP_SIM 237 default y 238 239config IA64_SGI_SN_XP 240 tristate "Support communication between SGI SSIs" 241 depends on IA64_GENERIC || IA64_SGI_SN2 242 select IA64_UNCACHED_ALLOCATOR 243 help 244 An SGI machine can be divided into multiple Single System 245 Images which act independently of each other and have 246 hardware based memory protection from the others. Enabling 247 this feature will allow for direct communication between SSIs 248 based on a network adapter and DMA messaging. 249 250config FORCE_MAX_ZONEORDER 251 int "MAX_ORDER (11 - 17)" if !HUGETLB_PAGE 252 range 11 17 if !HUGETLB_PAGE 253 default "17" if HUGETLB_PAGE 254 default "11" 255 256config SMP 257 bool "Symmetric multi-processing support" 258 help 259 This enables support for systems with more than one CPU. If you have 260 a system with only one CPU, say N. If you have a system with more 261 than one CPU, say Y. 262 263 If you say N here, the kernel will run on single and multiprocessor 264 systems, but will use only one CPU of a multiprocessor system. If 265 you say Y here, the kernel will run on many, but not all, 266 single processor systems. On a single processor system, the kernel 267 will run faster if you say N here. 268 269 See also the <file:Documentation/smp.txt> and the SMP-HOWTO 270 available at <http://www.tldp.org/docs.html#howto>. 271 272 If you don't know what to do here, say N. 273 274config NR_CPUS 275 int "Maximum number of CPUs (2-1024)" 276 range 2 1024 277 depends on SMP 278 default "1024" 279 help 280 You should set this to the number of CPUs in your system, but 281 keep in mind that a kernel compiled for, e.g., 2 CPUs will boot but 282 only use 2 CPUs on a >2 CPU system. Setting this to a value larger 283 than 64 will cause the use of a CPU mask array, causing a small 284 performance hit. 285 286config HOTPLUG_CPU 287 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)" 288 depends on SMP && EXPERIMENTAL 289 select HOTPLUG 290 default n 291 ---help--- 292 Say Y here to experiment with turning CPUs off and on. CPUs 293 can be controlled through /sys/devices/system/cpu/cpu#. 294 Say N if you want to disable CPU hotplug. 295 296config ARCH_ENABLE_MEMORY_HOTPLUG 297 def_bool y 298 299config SCHED_SMT 300 bool "SMT scheduler support" 301 depends on SMP 302 help 303 Improves the CPU scheduler's decision making when dealing with 304 Intel IA64 chips with MultiThreading at a cost of slightly increased 305 overhead in some places. If unsure say N here. 306 307config PERMIT_BSP_REMOVE 308 bool "Support removal of Bootstrap Processor" 309 depends on HOTPLUG_CPU 310 default n 311 ---help--- 312 Say Y here if your platform SAL will support removal of BSP with HOTPLUG_CPU 313 support. 314 315config FORCE_CPEI_RETARGET 316 bool "Force assumption that CPEI can be re-targetted" 317 depends on PERMIT_BSP_REMOVE 318 default n 319 ---help--- 320 Say Y if you need to force the assumption that CPEI can be re-targetted to 321 any cpu in the system. This hint is available via ACPI 3.0 specifications. 322 Tiger4 systems are capable of re-directing CPEI to any CPU other than BSP. 323 This option it useful to enable this feature on older BIOS's as well. 324 You can also enable this by using boot command line option force_cpei=1. 325 326config PREEMPT 327 bool "Preemptible Kernel" 328 help 329 This option reduces the latency of the kernel when reacting to 330 real-time or interactive events by allowing a low priority process to 331 be preempted even if it is in kernel mode executing a system call. 332 This allows applications to run more reliably even when the system is 333 under load. 334 335 Say Y here if you are building a kernel for a desktop, embedded 336 or real-time system. Say N if you are unsure. 337 338source "mm/Kconfig" 339 340config ARCH_SELECT_MEMORY_MODEL 341 def_bool y 342 343config ARCH_DISCONTIGMEM_ENABLE 344 def_bool y 345 help 346 Say Y to support efficient handling of discontiguous physical memory, 347 for architectures which are either NUMA (Non-Uniform Memory Access) 348 or have huge holes in the physical address space for other reasons. 349 See <file:Documentation/vm/numa> for more. 350 351config ARCH_FLATMEM_ENABLE 352 def_bool y 353 354config ARCH_SPARSEMEM_ENABLE 355 def_bool y 356 depends on ARCH_DISCONTIGMEM_ENABLE 357 358config ARCH_DISCONTIGMEM_DEFAULT 359 def_bool y if (IA64_SGI_SN2 || IA64_GENERIC || IA64_HP_ZX1 || IA64_HP_ZX1_SWIOTLB) 360 depends on ARCH_DISCONTIGMEM_ENABLE 361 362config NUMA 363 bool "NUMA support" 364 depends on !IA64_HP_SIM && !FLATMEM 365 default y if IA64_SGI_SN2 366 select ACPI_NUMA if ACPI 367 help 368 Say Y to compile the kernel to support NUMA (Non-Uniform Memory 369 Access). This option is for configuring high-end multiprocessor 370 server systems. If in doubt, say N. 371 372config NODES_SHIFT 373 int "Max num nodes shift(3-10)" 374 range 3 10 375 default "10" 376 depends on NEED_MULTIPLE_NODES 377 help 378 This option specifies the maximum number of nodes in your SSI system. 379 MAX_NUMNODES will be 2^(This value). 380 If in doubt, use the default. 381 382config ARCH_POPULATES_NODE_MAP 383 def_bool y 384 385# VIRTUAL_MEM_MAP and FLAT_NODE_MEM_MAP are functionally equivalent. 386# VIRTUAL_MEM_MAP has been retained for historical reasons. 387config VIRTUAL_MEM_MAP 388 bool "Virtual mem map" 389 depends on !SPARSEMEM 390 default y if !IA64_HP_SIM 391 help 392 Say Y to compile the kernel with support for a virtual mem map. 393 This code also only takes effect if a memory hole of greater than 394 1 Gb is found during boot. You must turn this option on if you 395 require the DISCONTIGMEM option for your machine. If you are 396 unsure, say Y. 397 398config HOLES_IN_ZONE 399 bool 400 default y if VIRTUAL_MEM_MAP 401 402config HAVE_ARCH_EARLY_PFN_TO_NID 403 def_bool y 404 depends on NEED_MULTIPLE_NODES 405 406config HAVE_ARCH_NODEDATA_EXTENSION 407 def_bool y 408 depends on NUMA 409 410config IA32_SUPPORT 411 bool "Support for Linux/x86 binaries" 412 help 413 IA-64 processors can execute IA-32 (X86) instructions. By 414 saying Y here, the kernel will include IA-32 system call 415 emulation support which makes it possible to transparently 416 run IA-32 Linux binaries on an IA-64 Linux system. 417 If in doubt, say Y. 418 419config COMPAT 420 bool 421 depends on IA32_SUPPORT 422 default y 423 424config IA64_MCA_RECOVERY 425 tristate "MCA recovery from errors other than TLB." 426 427config PERFMON 428 bool "Performance monitor support" 429 help 430 Selects whether support for the IA-64 performance monitor hardware 431 is included in the kernel. This makes some kernel data-structures a 432 little bigger and slows down execution a bit, but it is generally 433 a good idea to turn this on. If you're unsure, say Y. 434 435config IA64_PALINFO 436 tristate "/proc/pal support" 437 help 438 If you say Y here, you are able to get PAL (Processor Abstraction 439 Layer) information in /proc/pal. This contains useful information 440 about the processors in your systems, such as cache and TLB sizes 441 and the PAL firmware version in use. 442 443 To use this option, you have to ensure that the "/proc file system 444 support" (CONFIG_PROC_FS) is enabled, too. 445 446config IA64_MC_ERR_INJECT 447 tristate "MC error injection support" 448 help 449 Selets whether support for MC error injection. By enabling the 450 support, kernel provide sysfs interface for user application to 451 call MC error injection PAL procedure to inject various errors. 452 This is a useful tool for MCA testing. 453 454 If you're unsure, do not select this option. 455 456config SGI_SN 457 def_bool y if (IA64_SGI_SN2 || IA64_GENERIC) 458 459config IA64_ESI 460 bool "ESI (Extensible SAL Interface) support" 461 help 462 If you say Y here, support is built into the kernel to 463 make ESI calls. ESI calls are used to support vendor-specific 464 firmware extensions, such as the ability to inject memory-errors 465 for test-purposes. If you're unsure, say N. 466 467source "drivers/sn/Kconfig" 468 469config KEXEC 470 bool "kexec system call (EXPERIMENTAL)" 471 depends on EXPERIMENTAL && !IA64_HP_SIM && (!SMP || HOTPLUG_CPU) 472 help 473 kexec is a system call that implements the ability to shutdown your 474 current kernel, and to start another kernel. It is like a reboot 475 but it is independent of the system firmware. And like a reboot 476 you can start any kernel with it, not just Linux. 477 478 The name comes from the similiarity to the exec system call. 479 480 It is an ongoing process to be certain the hardware in a machine 481 is properly shutdown, so do not be surprised if this code does not 482 initially work for you. It may help to enable device hotplugging 483 support. As of this writing the exact hardware interface is 484 strongly in flux, so no good recommendation can be made. 485 486config CRASH_DUMP 487 bool "kernel crash dumps (EXPERIMENTAL)" 488 depends on EXPERIMENTAL && IA64_MCA_RECOVERY && !IA64_HP_SIM && (!SMP || HOTPLUG_CPU) 489 help 490 Generate crash dump after being started by kexec. 491 492source "drivers/firmware/Kconfig" 493 494source "fs/Kconfig.binfmt" 495 496endmenu 497 498menu "Power management and ACPI" 499 500source "kernel/power/Kconfig" 501 502source "drivers/acpi/Kconfig" 503 504if PM 505 506source "arch/ia64/kernel/cpufreq/Kconfig" 507 508endif 509 510endmenu 511 512if !IA64_HP_SIM 513 514menu "Bus options (PCI, PCMCIA)" 515 516config PCI 517 bool "PCI support" 518 help 519 Real IA-64 machines all have PCI/PCI-X/PCI Express busses. Say Y 520 here unless you are using a simulator without PCI support. 521 522config PCI_DOMAINS 523 bool 524 default PCI 525 526source "drivers/pci/pcie/Kconfig" 527 528source "drivers/pci/Kconfig" 529 530source "drivers/pci/hotplug/Kconfig" 531 532source "drivers/pcmcia/Kconfig" 533 534endmenu 535 536endif 537 538source "net/Kconfig" 539 540source "drivers/Kconfig" 541 542config MSPEC 543 tristate "Memory special operations driver" 544 depends on IA64 545 select IA64_UNCACHED_ALLOCATOR 546 help 547 If you have an ia64 and you want to enable memory special 548 operations support (formerly known as fetchop), say Y here, 549 otherwise say N. 550 551source "fs/Kconfig" 552 553source "lib/Kconfig" 554 555# 556# Use the generic interrupt handling code in kernel/irq/: 557# 558config GENERIC_HARDIRQS 559 bool 560 default y 561 562config GENERIC_IRQ_PROBE 563 bool 564 default y 565 566config GENERIC_PENDING_IRQ 567 bool 568 depends on GENERIC_HARDIRQS && SMP 569 default y 570 571config IRQ_PER_CPU 572 bool 573 default y 574 575source "arch/ia64/hp/sim/Kconfig" 576 577menu "Instrumentation Support" 578 depends on EXPERIMENTAL 579 580source "arch/ia64/oprofile/Kconfig" 581 582config KPROBES 583 bool "Kprobes (EXPERIMENTAL)" 584 depends on KALLSYMS && EXPERIMENTAL && MODULES 585 help 586 Kprobes allows you to trap at almost any kernel address and 587 execute a callback function. register_kprobe() establishes 588 a probepoint and specifies the callback. Kprobes is useful 589 for kernel debugging, non-intrusive instrumentation and testing. 590 If in doubt, say "N". 591endmenu 592 593source "arch/ia64/Kconfig.debug" 594 595source "security/Kconfig" 596 597source "crypto/Kconfig" 598