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 default y 15 help 16 The Itanium Processor Family is Intel's 64-bit successor to 17 the 32-bit X86 line. The IA-64 Linux project has a home 18 page at <http://www.linuxia64.org/> and a mailing list at 19 <linux-ia64@vger.kernel.org>. 20 21config 64BIT 22 bool 23 default y 24 25config MMU 26 bool 27 default y 28 29config RWSEM_XCHGADD_ALGORITHM 30 bool 31 default y 32 33config GENERIC_CALIBRATE_DELAY 34 bool 35 default y 36 37config TIME_INTERPOLATION 38 bool 39 default y 40 41config EFI 42 bool 43 default y 44 45config GENERIC_IOMAP 46 bool 47 default y 48 49choice 50 prompt "System type" 51 default IA64_GENERIC 52 53config IA64_GENERIC 54 bool "generic" 55 select NUMA 56 select ACPI_NUMA 57 select VIRTUAL_MEM_MAP 58 select DISCONTIGMEM 59 help 60 This selects the system type of your hardware. A "generic" kernel 61 will run on any supported IA-64 system. However, if you configure 62 a kernel for your specific system, it will be faster and smaller. 63 64 generic For any supported IA-64 system 65 DIG-compliant For DIG ("Developer's Interface Guide") compliant systems 66 HP-zx1/sx1000 For HP systems 67 HP-zx1/sx1000+swiotlb For HP systems with (broken) DMA-constrained devices. 68 SGI-SN2 For SGI Altix systems 69 Ski-simulator For the HP simulator <http://www.hpl.hp.com/research/linux/ski/> 70 71 If you don't know what to do, choose "generic". 72 73config IA64_DIG 74 bool "DIG-compliant" 75 76config IA64_HP_ZX1 77 bool "HP-zx1/sx1000" 78 help 79 Build a kernel that runs on HP zx1 and sx1000 systems. This adds 80 support for the HP I/O MMU. 81 82config IA64_HP_ZX1_SWIOTLB 83 bool "HP-zx1/sx1000 with software I/O TLB" 84 help 85 Build a kernel that runs on HP zx1 and sx1000 systems even when they 86 have broken PCI devices which cannot DMA to full 32 bits. Apart 87 from support for the HP I/O MMU, this includes support for the software 88 I/O TLB, which allows supporting the broken devices at the expense of 89 wasting some kernel memory (about 2MB by default). 90 91config IA64_SGI_SN2 92 bool "SGI-SN2" 93 help 94 Selecting this option will optimize the kernel for use on sn2 based 95 systems, but the resulting kernel binary will not run on other 96 types of ia64 systems. If you have an SGI Altix system, it's safe 97 to select this option. If in doubt, select ia64 generic support 98 instead. 99 100config IA64_HP_SIM 101 bool "Ski-simulator" 102 103endchoice 104 105choice 106 prompt "Processor type" 107 default ITANIUM 108 109config ITANIUM 110 bool "Itanium" 111 help 112 Select your IA-64 processor type. The default is Itanium. 113 This choice is safe for all IA-64 systems, but may not perform 114 optimally on systems with, say, Itanium 2 or newer processors. 115 116config MCKINLEY 117 bool "Itanium 2" 118 help 119 Select this to configure for an Itanium 2 (McKinley) processor. 120 121endchoice 122 123choice 124 prompt "Kernel page size" 125 default IA64_PAGE_SIZE_16KB 126 127config IA64_PAGE_SIZE_4KB 128 bool "4KB" 129 help 130 This lets you select the page size of the kernel. For best IA-64 131 performance, a page size of 8KB or 16KB is recommended. For best 132 IA-32 compatibility, a page size of 4KB should be selected (the vast 133 majority of IA-32 binaries work perfectly fine with a larger page 134 size). For Itanium 2 or newer systems, a page size of 64KB can also 135 be selected. 136 137 4KB For best IA-32 compatibility 138 8KB For best IA-64 performance 139 16KB For best IA-64 performance 140 64KB Requires Itanium 2 or newer processor. 141 142 If you don't know what to do, choose 16KB. 143 144config IA64_PAGE_SIZE_8KB 145 bool "8KB" 146 147config IA64_PAGE_SIZE_16KB 148 bool "16KB" 149 150config IA64_PAGE_SIZE_64KB 151 depends on !ITANIUM 152 bool "64KB" 153 154endchoice 155 156config IA64_BRL_EMU 157 bool 158 depends on ITANIUM 159 default y 160 161# align cache-sensitive data to 128 bytes 162config IA64_L1_CACHE_SHIFT 163 int 164 default "7" if MCKINLEY 165 default "6" if ITANIUM 166 167# align cache-sensitive data to 64 bytes 168config NUMA 169 bool "NUMA support" 170 depends on !IA64_HP_SIM 171 default y if IA64_SGI_SN2 172 select ACPI_NUMA 173 help 174 Say Y to compile the kernel to support NUMA (Non-Uniform Memory 175 Access). This option is for configuring high-end multiprocessor 176 server systems. If in doubt, say N. 177 178config VIRTUAL_MEM_MAP 179 bool "Virtual mem map" 180 default y if !IA64_HP_SIM 181 help 182 Say Y to compile the kernel with support for a virtual mem map. 183 This code also only takes effect if a memory hole of greater than 184 1 Gb is found during boot. You must turn this option on if you 185 require the DISCONTIGMEM option for your machine. If you are 186 unsure, say Y. 187 188config HOLES_IN_ZONE 189 bool 190 default y if VIRTUAL_MEM_MAP 191 192config DISCONTIGMEM 193 bool "Discontiguous memory support" 194 depends on (IA64_DIG || IA64_SGI_SN2 || IA64_GENERIC || IA64_HP_ZX1 || IA64_HP_ZX1_SWIOTLB) && NUMA && VIRTUAL_MEM_MAP 195 default y if (IA64_SGI_SN2 || IA64_GENERIC) && NUMA 196 help 197 Say Y to support efficient handling of discontiguous physical memory, 198 for architectures which are either NUMA (Non-Uniform Memory Access) 199 or have huge holes in the physical address space for other reasons. 200 See <file:Documentation/vm/numa> for more. 201 202config IA64_CYCLONE 203 bool "Cyclone (EXA) Time Source support" 204 help 205 Say Y here to enable support for IBM EXA Cyclone time source. 206 If you're unsure, answer N. 207 208config IOSAPIC 209 bool 210 depends on !IA64_HP_SIM 211 default y 212 213config IA64_SGI_SN_SIM 214 bool "SGI Medusa Simulator Support" 215 depends on IA64_SGI_SN2 216 help 217 If you are compiling a kernel that will run under SGI's IA-64 218 simulator (Medusa) then say Y, otherwise say N. 219 220config FORCE_MAX_ZONEORDER 221 int 222 default "18" 223 224config SMP 225 bool "Symmetric multi-processing support" 226 help 227 This enables support for systems with more than one CPU. If you have 228 a system with only one CPU, say N. If you have a system with more 229 than one CPU, say Y. 230 231 If you say N here, the kernel will run on single and multiprocessor 232 systems, but will use only one CPU of a multiprocessor system. If 233 you say Y here, the kernel will run on many, but not all, 234 single processor systems. On a single processor system, the kernel 235 will run faster if you say N here. 236 237 See also the <file:Documentation/smp.txt> and the SMP-HOWTO 238 available at <http://www.tldp.org/docs.html#howto>. 239 240 If you don't know what to do here, say N. 241 242config NR_CPUS 243 int "Maximum number of CPUs (2-512)" 244 range 2 512 245 depends on SMP 246 default "64" 247 help 248 You should set this to the number of CPUs in your system, but 249 keep in mind that a kernel compiled for, e.g., 2 CPUs will boot but 250 only use 2 CPUs on a >2 CPU system. Setting this to a value larger 251 than 64 will cause the use of a CPU mask array, causing a small 252 performance hit. 253 254config HOTPLUG_CPU 255 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)" 256 depends on SMP && EXPERIMENTAL 257 select HOTPLUG 258 default n 259 ---help--- 260 Say Y here to experiment with turning CPUs off and on. CPUs 261 can be controlled through /sys/devices/system/cpu/cpu#. 262 Say N if you want to disable CPU hotplug. 263 264config PREEMPT 265 bool "Preemptible Kernel" 266 help 267 This option reduces the latency of the kernel when reacting to 268 real-time or interactive events by allowing a low priority process to 269 be preempted even if it is in kernel mode executing a system call. 270 This allows applications to run more reliably even when the system is 271 under load. 272 273 Say Y here if you are building a kernel for a desktop, embedded 274 or real-time system. Say N if you are unsure. 275 276config HAVE_DEC_LOCK 277 bool 278 depends on (SMP || PREEMPT) 279 default y 280 281config IA32_SUPPORT 282 bool "Support for Linux/x86 binaries" 283 help 284 IA-64 processors can execute IA-32 (X86) instructions. By 285 saying Y here, the kernel will include IA-32 system call 286 emulation support which makes it possible to transparently 287 run IA-32 Linux binaries on an IA-64 Linux system. 288 If in doubt, say Y. 289 290config COMPAT 291 bool 292 depends on IA32_SUPPORT 293 default y 294 295config IA64_MCA_RECOVERY 296 tristate "MCA recovery from errors other than TLB." 297 298config PERFMON 299 bool "Performance monitor support" 300 help 301 Selects whether support for the IA-64 performance monitor hardware 302 is included in the kernel. This makes some kernel data-structures a 303 little bigger and slows down execution a bit, but it is generally 304 a good idea to turn this on. If you're unsure, say Y. 305 306config IA64_PALINFO 307 tristate "/proc/pal support" 308 help 309 If you say Y here, you are able to get PAL (Processor Abstraction 310 Layer) information in /proc/pal. This contains useful information 311 about the processors in your systems, such as cache and TLB sizes 312 and the PAL firmware version in use. 313 314 To use this option, you have to ensure that the "/proc file system 315 support" (CONFIG_PROC_FS) is enabled, too. 316 317config ACPI_DEALLOCATE_IRQ 318 bool 319 depends on IOSAPIC && EXPERIMENTAL 320 default y 321 322source "drivers/firmware/Kconfig" 323 324source "fs/Kconfig.binfmt" 325 326endmenu 327 328menu "Power management and ACPI" 329 330config PM 331 bool "Power Management support" 332 depends on IA64_GENERIC || IA64_DIG || IA64_HP_ZX1 || IA64_HP_ZX1_SWIOTLB 333 default y 334 help 335 "Power Management" means that parts of your computer are shut 336 off or put into a power conserving "sleep" mode if they are not 337 being used. There are two competing standards for doing this: APM 338 and ACPI. If you want to use either one, say Y here and then also 339 to the requisite support below. 340 341 Power Management is most important for battery powered laptop 342 computers; if you have a laptop, check out the Linux Laptop home 343 page on the WWW at <http://www.linux-on-laptops.com/> and the 344 Battery Powered Linux mini-HOWTO, available from 345 <http://www.tldp.org/docs.html#howto>. 346 347 Note that, even if you say N here, Linux on the x86 architecture 348 will issue the hlt instruction if nothing is to be done, thereby 349 sending the processor to sleep and saving power. 350 351config ACPI 352 bool 353 depends on !IA64_HP_SIM 354 default y 355 356if !IA64_HP_SIM 357 358source "drivers/acpi/Kconfig" 359 360endif 361 362endmenu 363 364if !IA64_HP_SIM 365 366menu "Bus options (PCI, PCMCIA)" 367 368config PCI 369 bool "PCI support" 370 help 371 Find out whether you have a PCI motherboard. PCI is the name of a 372 bus system, i.e. the way the CPU talks to the other stuff inside 373 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or 374 VESA. If you have PCI, say Y, otherwise N. 375 376 The PCI-HOWTO, available from 377 <http://www.tldp.org/docs.html#howto>, contains valuable 378 information about which PCI hardware does work under Linux and which 379 doesn't. 380 381config PCI_DOMAINS 382 bool 383 default PCI 384 385source "drivers/pci/Kconfig" 386 387source "drivers/pci/hotplug/Kconfig" 388 389source "drivers/pcmcia/Kconfig" 390 391endmenu 392 393endif 394 395source "drivers/Kconfig" 396 397source "fs/Kconfig" 398 399source "lib/Kconfig" 400 401# 402# Use the generic interrupt handling code in kernel/irq/: 403# 404config GENERIC_HARDIRQS 405 bool 406 default y 407 408config GENERIC_IRQ_PROBE 409 bool 410 default y 411 412source "arch/ia64/hp/sim/Kconfig" 413 414source "arch/ia64/oprofile/Kconfig" 415 416source "arch/ia64/Kconfig.debug" 417 418source "security/Kconfig" 419 420source "crypto/Kconfig" 421