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 HUGETLB_PAGE_SIZE_VARIABLE 58 bool 59 depends on HUGETLB_PAGE 60 default y 61 62config GENERIC_FIND_NEXT_BIT 63 bool 64 default y 65 66config GENERIC_CALIBRATE_DELAY 67 bool 68 default y 69 70config GENERIC_TIME 71 bool 72 default y 73 74config GENERIC_TIME_VSYSCALL 75 bool 76 default y 77 78config DMI 79 bool 80 default y 81 82config EFI 83 bool 84 default y 85 86config GENERIC_IOMAP 87 bool 88 default y 89 90config SCHED_NO_NO_OMIT_FRAME_POINTER 91 bool 92 default y 93 94config IA64_UNCACHED_ALLOCATOR 95 bool 96 select GENERIC_ALLOCATOR 97 98config AUDIT_ARCH 99 bool 100 default y 101 102choice 103 prompt "System type" 104 default IA64_GENERIC 105 106config IA64_GENERIC 107 bool "generic" 108 select NUMA 109 select ACPI_NUMA 110 select SWIOTLB 111 help 112 This selects the system type of your hardware. A "generic" kernel 113 will run on any supported IA-64 system. However, if you configure 114 a kernel for your specific system, it will be faster and smaller. 115 116 generic For any supported IA-64 system 117 DIG-compliant For DIG ("Developer's Interface Guide") compliant systems 118 HP-zx1/sx1000 For HP systems 119 HP-zx1/sx1000+swiotlb For HP systems with (broken) DMA-constrained devices. 120 SGI-SN2 For SGI Altix systems 121 Ski-simulator For the HP simulator <http://www.hpl.hp.com/research/linux/ski/> 122 123 If you don't know what to do, choose "generic". 124 125config IA64_DIG 126 bool "DIG-compliant" 127 select SWIOTLB 128 129config IA64_HP_ZX1 130 bool "HP-zx1/sx1000" 131 help 132 Build a kernel that runs on HP zx1 and sx1000 systems. This adds 133 support for the HP I/O MMU. 134 135config IA64_HP_ZX1_SWIOTLB 136 bool "HP-zx1/sx1000 with software I/O TLB" 137 select SWIOTLB 138 help 139 Build a kernel that runs on HP zx1 and sx1000 systems even when they 140 have broken PCI devices which cannot DMA to full 32 bits. Apart 141 from support for the HP I/O MMU, this includes support for the software 142 I/O TLB, which allows supporting the broken devices at the expense of 143 wasting some kernel memory (about 2MB by default). 144 145config IA64_SGI_SN2 146 bool "SGI-SN2" 147 help 148 Selecting this option will optimize the kernel for use on sn2 based 149 systems, but the resulting kernel binary will not run on other 150 types of ia64 systems. If you have an SGI Altix system, it's safe 151 to select this option. If in doubt, select ia64 generic support 152 instead. 153 154config IA64_HP_SIM 155 bool "Ski-simulator" 156 select SWIOTLB 157 158endchoice 159 160choice 161 prompt "Processor type" 162 default ITANIUM 163 164config ITANIUM 165 bool "Itanium" 166 help 167 Select your IA-64 processor type. The default is Itanium. 168 This choice is safe for all IA-64 systems, but may not perform 169 optimally on systems with, say, Itanium 2 or newer processors. 170 171config MCKINLEY 172 bool "Itanium 2" 173 help 174 Select this to configure for an Itanium 2 (McKinley) processor. 175 176endchoice 177 178choice 179 prompt "Kernel page size" 180 default IA64_PAGE_SIZE_16KB 181 182config IA64_PAGE_SIZE_4KB 183 bool "4KB" 184 help 185 This lets you select the page size of the kernel. For best IA-64 186 performance, a page size of 8KB or 16KB is recommended. For best 187 IA-32 compatibility, a page size of 4KB should be selected (the vast 188 majority of IA-32 binaries work perfectly fine with a larger page 189 size). For Itanium 2 or newer systems, a page size of 64KB can also 190 be selected. 191 192 4KB For best IA-32 compatibility 193 8KB For best IA-64 performance 194 16KB For best IA-64 performance 195 64KB Requires Itanium 2 or newer processor. 196 197 If you don't know what to do, choose 16KB. 198 199config IA64_PAGE_SIZE_8KB 200 bool "8KB" 201 202config IA64_PAGE_SIZE_16KB 203 bool "16KB" 204 205config IA64_PAGE_SIZE_64KB 206 depends on !ITANIUM 207 bool "64KB" 208 209endchoice 210 211choice 212 prompt "Page Table Levels" 213 default PGTABLE_3 214 215config PGTABLE_3 216 bool "3 Levels" 217 218config PGTABLE_4 219 depends on !IA64_PAGE_SIZE_64KB 220 bool "4 Levels" 221 222endchoice 223 224source kernel/Kconfig.hz 225 226config IA64_BRL_EMU 227 bool 228 depends on ITANIUM 229 default y 230 231# align cache-sensitive data to 128 bytes 232config IA64_L1_CACHE_SHIFT 233 int 234 default "7" if MCKINLEY 235 default "6" if ITANIUM 236 237config IA64_CYCLONE 238 bool "Cyclone (EXA) Time Source support" 239 help 240 Say Y here to enable support for IBM EXA Cyclone time source. 241 If you're unsure, answer N. 242 243config IOSAPIC 244 bool 245 depends on !IA64_HP_SIM 246 default y 247 248config IA64_SGI_SN_XP 249 tristate "Support communication between SGI SSIs" 250 depends on IA64_GENERIC || IA64_SGI_SN2 251 select IA64_UNCACHED_ALLOCATOR 252 help 253 An SGI machine can be divided into multiple Single System 254 Images which act independently of each other and have 255 hardware based memory protection from the others. Enabling 256 this feature will allow for direct communication between SSIs 257 based on a network adapter and DMA messaging. 258 259config FORCE_MAX_ZONEORDER 260 int "MAX_ORDER (11 - 17)" if !HUGETLB_PAGE 261 range 11 17 if !HUGETLB_PAGE 262 default "17" if HUGETLB_PAGE 263 default "11" 264 265config SMP 266 bool "Symmetric multi-processing support" 267 help 268 This enables support for systems with more than one CPU. If you have 269 a system with only one CPU, say N. If you have a system with more 270 than one CPU, say Y. 271 272 If you say N here, the kernel will run on single and multiprocessor 273 systems, but will use only one CPU of a multiprocessor system. If 274 you say Y here, the kernel will run on many, but not all, 275 single processor systems. On a single processor system, the kernel 276 will run faster if you say N here. 277 278 See also the <file:Documentation/smp.txt> and the SMP-HOWTO 279 available at <http://www.tldp.org/docs.html#howto>. 280 281 If you don't know what to do here, say N. 282 283config NR_CPUS 284 int "Maximum number of CPUs (2-1024)" 285 range 2 1024 286 depends on SMP 287 default "1024" 288 help 289 You should set this to the number of CPUs in your system, but 290 keep in mind that a kernel compiled for, e.g., 2 CPUs will boot but 291 only use 2 CPUs on a >2 CPU system. Setting this to a value larger 292 than 64 will cause the use of a CPU mask array, causing a small 293 performance hit. 294 295config HOTPLUG_CPU 296 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)" 297 depends on SMP && EXPERIMENTAL 298 select HOTPLUG 299 default n 300 ---help--- 301 Say Y here to experiment with turning CPUs off and on. CPUs 302 can be controlled through /sys/devices/system/cpu/cpu#. 303 Say N if you want to disable CPU hotplug. 304 305config ARCH_ENABLE_MEMORY_HOTPLUG 306 def_bool y 307 308config ARCH_ENABLE_MEMORY_HOTREMOVE 309 def_bool y 310 311config SCHED_SMT 312 bool "SMT scheduler support" 313 depends on SMP 314 help 315 Improves the CPU scheduler's decision making when dealing with 316 Intel IA64 chips with MultiThreading at a cost of slightly increased 317 overhead in some places. If unsure say N here. 318 319config PERMIT_BSP_REMOVE 320 bool "Support removal of Bootstrap Processor" 321 depends on HOTPLUG_CPU 322 default n 323 ---help--- 324 Say Y here if your platform SAL will support removal of BSP with HOTPLUG_CPU 325 support. 326 327config FORCE_CPEI_RETARGET 328 bool "Force assumption that CPEI can be re-targetted" 329 depends on PERMIT_BSP_REMOVE 330 default n 331 ---help--- 332 Say Y if you need to force the assumption that CPEI can be re-targetted to 333 any cpu in the system. This hint is available via ACPI 3.0 specifications. 334 Tiger4 systems are capable of re-directing CPEI to any CPU other than BSP. 335 This option it useful to enable this feature on older BIOS's as well. 336 You can also enable this by using boot command line option force_cpei=1. 337 338source "kernel/Kconfig.preempt" 339 340source "mm/Kconfig" 341 342config ARCH_SELECT_MEMORY_MODEL 343 def_bool y 344 345config ARCH_DISCONTIGMEM_ENABLE 346 def_bool y 347 help 348 Say Y to support efficient handling of discontiguous physical memory, 349 for architectures which are either NUMA (Non-Uniform Memory Access) 350 or have huge holes in the physical address space for other reasons. 351 See <file:Documentation/vm/numa> for more. 352 353config ARCH_FLATMEM_ENABLE 354 def_bool y 355 356config ARCH_SPARSEMEM_ENABLE 357 def_bool y 358 depends on ARCH_DISCONTIGMEM_ENABLE 359 select SPARSEMEM_VMEMMAP_ENABLE 360 361config ARCH_DISCONTIGMEM_DEFAULT 362 def_bool y if (IA64_SGI_SN2 || IA64_GENERIC || IA64_HP_ZX1 || IA64_HP_ZX1_SWIOTLB) 363 depends on ARCH_DISCONTIGMEM_ENABLE 364 365config NUMA 366 bool "NUMA support" 367 depends on !IA64_HP_SIM && !FLATMEM 368 default y if IA64_SGI_SN2 369 select ACPI_NUMA if ACPI 370 help 371 Say Y to compile the kernel to support NUMA (Non-Uniform Memory 372 Access). This option is for configuring high-end multiprocessor 373 server systems. If in doubt, say N. 374 375config NODES_SHIFT 376 int "Max num nodes shift(3-10)" 377 range 3 10 378 default "10" 379 depends on NEED_MULTIPLE_NODES 380 help 381 This option specifies the maximum number of nodes in your SSI system. 382 MAX_NUMNODES will be 2^(This value). 383 If in doubt, use the default. 384 385config ARCH_POPULATES_NODE_MAP 386 def_bool y 387 388# VIRTUAL_MEM_MAP and FLAT_NODE_MEM_MAP are functionally equivalent. 389# VIRTUAL_MEM_MAP has been retained for historical reasons. 390config VIRTUAL_MEM_MAP 391 bool "Virtual mem map" 392 depends on !SPARSEMEM 393 default y if !IA64_HP_SIM 394 help 395 Say Y to compile the kernel with support for a virtual mem map. 396 This code also only takes effect if a memory hole of greater than 397 1 Gb is found during boot. You must turn this option on if you 398 require the DISCONTIGMEM option for your machine. If you are 399 unsure, say Y. 400 401config HOLES_IN_ZONE 402 bool 403 default y if VIRTUAL_MEM_MAP 404 405config HAVE_ARCH_EARLY_PFN_TO_NID 406 def_bool y 407 depends on NEED_MULTIPLE_NODES 408 409config HAVE_ARCH_NODEDATA_EXTENSION 410 def_bool y 411 depends on NUMA 412 413config IA32_SUPPORT 414 bool "Support for Linux/x86 binaries" 415 help 416 IA-64 processors can execute IA-32 (X86) instructions. By 417 saying Y here, the kernel will include IA-32 system call 418 emulation support which makes it possible to transparently 419 run IA-32 Linux binaries on an IA-64 Linux system. 420 If in doubt, say Y. 421 422config COMPAT 423 bool 424 depends on IA32_SUPPORT 425 default y 426 427config COMPAT_FOR_U64_ALIGNMENT 428 def_bool COMPAT 429 430config IA64_MCA_RECOVERY 431 tristate "MCA recovery from errors other than TLB." 432 433config PERFMON 434 bool "Performance monitor support" 435 help 436 Selects whether support for the IA-64 performance monitor hardware 437 is included in the kernel. This makes some kernel data-structures a 438 little bigger and slows down execution a bit, but it is generally 439 a good idea to turn this on. If you're unsure, say Y. 440 441config IA64_PALINFO 442 tristate "/proc/pal support" 443 help 444 If you say Y here, you are able to get PAL (Processor Abstraction 445 Layer) information in /proc/pal. This contains useful information 446 about the processors in your systems, such as cache and TLB sizes 447 and the PAL firmware version in use. 448 449 To use this option, you have to ensure that the "/proc file system 450 support" (CONFIG_PROC_FS) is enabled, too. 451 452config IA64_MC_ERR_INJECT 453 tristate "MC error injection support" 454 help 455 Selets whether support for MC error injection. By enabling the 456 support, kernel provide sysfs interface for user application to 457 call MC error injection PAL procedure to inject various errors. 458 This is a useful tool for MCA testing. 459 460 If you're unsure, do not select this option. 461 462config SGI_SN 463 def_bool y if (IA64_SGI_SN2 || IA64_GENERIC) 464 465config IA64_ESI 466 bool "ESI (Extensible SAL Interface) support" 467 help 468 If you say Y here, support is built into the kernel to 469 make ESI calls. ESI calls are used to support vendor-specific 470 firmware extensions, such as the ability to inject memory-errors 471 for test-purposes. If you're unsure, say N. 472 473config IA64_HP_AML_NFW 474 bool "Support ACPI AML calls to native firmware" 475 help 476 This driver installs a global ACPI Operation Region handler for 477 region 0xA1. AML methods can use this OpRegion to call arbitrary 478 native firmware functions. The driver installs the OpRegion 479 handler if there is an HPQ5001 device or if the user supplies 480 the "force" module parameter, e.g., with the "aml_nfw.force" 481 kernel command line option. 482 483source "drivers/sn/Kconfig" 484 485config KEXEC 486 bool "kexec system call (EXPERIMENTAL)" 487 depends on EXPERIMENTAL && !IA64_HP_SIM && (!SMP || HOTPLUG_CPU) 488 help 489 kexec is a system call that implements the ability to shutdown your 490 current kernel, and to start another kernel. It is like a reboot 491 but it is independent of the system firmware. And like a reboot 492 you can start any kernel with it, not just Linux. 493 494 The name comes from the similiarity to the exec system call. 495 496 It is an ongoing process to be certain the hardware in a machine 497 is properly shutdown, so do not be surprised if this code does not 498 initially work for you. It may help to enable device hotplugging 499 support. As of this writing the exact hardware interface is 500 strongly in flux, so no good recommendation can be made. 501 502config CRASH_DUMP 503 bool "kernel crash dumps (EXPERIMENTAL)" 504 depends on EXPERIMENTAL && IA64_MCA_RECOVERY && !IA64_HP_SIM && (!SMP || HOTPLUG_CPU) 505 help 506 Generate crash dump after being started by kexec. 507 508source "drivers/firmware/Kconfig" 509 510source "fs/Kconfig.binfmt" 511 512endmenu 513 514menu "Power management and ACPI" 515 516source "kernel/power/Kconfig" 517 518source "drivers/acpi/Kconfig" 519 520if PM 521 522source "arch/ia64/kernel/cpufreq/Kconfig" 523 524endif 525 526endmenu 527 528if !IA64_HP_SIM 529 530menu "Bus options (PCI, PCMCIA)" 531 532config PCI 533 bool "PCI support" 534 help 535 Real IA-64 machines all have PCI/PCI-X/PCI Express busses. Say Y 536 here unless you are using a simulator without PCI support. 537 538config PCI_DOMAINS 539 def_bool PCI 540 541config PCI_SYSCALL 542 def_bool PCI 543 544source "drivers/pci/pcie/Kconfig" 545 546source "drivers/pci/Kconfig" 547 548source "drivers/pci/hotplug/Kconfig" 549 550source "drivers/pcmcia/Kconfig" 551 552endmenu 553 554endif 555 556source "net/Kconfig" 557 558source "drivers/Kconfig" 559 560config MSPEC 561 tristate "Memory special operations driver" 562 depends on IA64 563 select IA64_UNCACHED_ALLOCATOR 564 help 565 If you have an ia64 and you want to enable memory special 566 operations support (formerly known as fetchop), say Y here, 567 otherwise say N. 568 569source "fs/Kconfig" 570 571source "lib/Kconfig" 572 573# 574# Use the generic interrupt handling code in kernel/irq/: 575# 576config GENERIC_HARDIRQS 577 bool 578 default y 579 580config GENERIC_IRQ_PROBE 581 bool 582 default y 583 584config GENERIC_PENDING_IRQ 585 bool 586 depends on GENERIC_HARDIRQS && SMP 587 default y 588 589config IRQ_PER_CPU 590 bool 591 default y 592 593source "arch/ia64/hp/sim/Kconfig" 594 595menu "Instrumentation Support" 596 597source "arch/ia64/oprofile/Kconfig" 598 599config KPROBES 600 bool "Kprobes" 601 depends on KALLSYMS && MODULES 602 help 603 Kprobes allows you to trap at almost any kernel address and 604 execute a callback function. register_kprobe() establishes 605 a probepoint and specifies the callback. Kprobes is useful 606 for kernel debugging, non-intrusive instrumentation and testing. 607 If in doubt, say "N". 608endmenu 609 610source "arch/ia64/Kconfig.debug" 611 612source "security/Kconfig" 613 614source "crypto/Kconfig" 615