arch/mips/Kconfig

   1 config MIPS
   2         bool
   3         default y
   4         # Horrible source of confusion.  Die, die, die ...
   5         select EMBEDDED
   6
   7 # shouldn't it be per-subarchitecture?
   8 config ARCH_MAY_HAVE_PC_FDC
   9         bool
  10         default y
  11
  12 mainmenu "Linux/MIPS Kernel Configuration"
  13
  14 source "init/Kconfig"
  15
  16 config SYS_SUPPORTS_32BIT_KERNEL
  17         bool
  18 config SYS_SUPPORTS_64BIT_KERNEL
  19         bool
  20 config CPU_SUPPORTS_32BIT_KERNEL
  21         bool
  22 config CPU_SUPPORTS_64BIT_KERNEL
  23         bool
  24
  25 menu "Kernel type"
  26
  27 choice
  28
  29         prompt "Kernel code model"
  30         help
  31           You should only select this option if you have a workload that
  32           actually benefits from 64-bit processing or if your machine has
  33           large memory.  You will only be presented a single option in this
  34           menu if your system does not support both 32-bit and 64-bit kernels.
  35
  36 config 32BIT
  37         bool "32-bit kernel"
  38         depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
  39         select TRAD_SIGNALS
  40         help
  41           Select this option if you want to build a 32-bit kernel.
  42
  43 config 64BIT
  44         bool "64-bit kernel"
  45         depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
  46         help
  47           Select this option if you want to build a 64-bit kernel.
  48
  49 endchoice
  50
  51 endmenu
  52
  53 menu "Machine selection"
  54
  55 config MACH_JAZZ
  56         bool "Support for the Jazz family of machines"
  57         select ARC
  58         select ARC32
  59         select GENERIC_ISA_DMA
  60         select I8259
  61         select ISA
  62         select SYS_SUPPORTS_32BIT_KERNEL
  63         select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
  64         help
  65          This a family of machines based on the MIPS R4030 chipset which was
  66          used by several vendors to build RISC/os and Windows NT workstations.
  67          Members include the Acer PICA, MIPS Magnum 4000, MIPS Millenium and
  68          Olivetti M700-10 workstations.
  69
  70 config ACER_PICA_61
  71         bool "Support for Acer PICA 1 chipset (EXPERIMENTAL)"
  72         depends on MACH_JAZZ && EXPERIMENTAL
  73         select DMA_NONCOHERENT
  74         help
  75           This is a machine with a R4400 133/150 MHz CPU. To compile a Linux
  76           kernel that runs on these, say Y here. For details about Linux on
  77           the MIPS architecture, check out the Linux/MIPS FAQ on the WWW at
  78           <http://www.linux-mips.org/>.
  79
  80 config MIPS_MAGNUM_4000
  81         bool "Support for MIPS Magnum 4000"
  82         depends on MACH_JAZZ
  83         select DMA_NONCOHERENT
  84         help
  85           This is a machine with a R4000 100 MHz CPU. To compile a Linux
  86           kernel that runs on these, say Y here. For details about Linux on
  87           the MIPS architecture, check out the Linux/MIPS FAQ on the WWW at
  88           <http://www.linux-mips.org/>.
  89
  90 config OLIVETTI_M700
  91         bool "Support for Olivetti M700-10"
  92         depends on MACH_JAZZ
  93         select DMA_NONCOHERENT
  94         help
  95           This is a machine with a R4000 100 MHz CPU. To compile a Linux
  96           kernel that runs on these, say Y here. For details about Linux on
  97           the MIPS architecture, check out the Linux/MIPS FAQ on the WWW at
  98           <http://www.linux-mips.org/>.
  99
 100 config MACH_VR41XX
 101         bool "Support for NEC VR4100 series based machines"
 102         select SYS_SUPPORTS_32BIT_KERNEL
 103         select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
 104
 105 config NEC_CMBVR4133
 106         bool "Support for NEC CMB-VR4133"
 107         depends on MACH_VR41XX
 108         select CPU_VR41XX
 109         select DMA_NONCOHERENT
 110         select IRQ_CPU
 111         select HW_HAS_PCI
 112
 113 config ROCKHOPPER
 114         bool "Support for Rockhopper baseboard"
 115         depends on NEC_CMBVR4133
 116         select I8259
 117         select HAVE_STD_PC_SERIAL_PORT
 118
 119 config CASIO_E55
 120         bool "Support for CASIO CASSIOPEIA E-10/15/55/65"
 121         depends on MACH_VR41XX
 122         select CPU_LITTLE_ENDIAN
 123         select DMA_NONCOHERENT
 124         select IRQ_CPU
 125         select ISA
 126
 127 config IBM_WORKPAD
 128         bool "Support for IBM WorkPad z50"
 129         depends on MACH_VR41XX
 130         select CPU_LITTLE_ENDIAN
 131         select DMA_NONCOHERENT
 132         select IRQ_CPU
 133         select ISA
 134
 135 config TANBAC_TB022X
 136         bool "Support for TANBAC VR4131 multichip module and TANBAC VR4131DIMM"
 137         depends on MACH_VR41XX
 138         select CPU_LITTLE_ENDIAN
 139         select DMA_NONCOHERENT
 140         select IRQ_CPU
 141         select HW_HAS_PCI
 142         help
 143           The TANBAC VR4131 multichip module(TB0225) and
 144           the TANBAC VR4131DIMM(TB0229) are MIPS-based platforms
 145           manufactured by TANBAC.
 146           Please refer to <http://www.tanbac.co.jp/>
 147           about VR4131 multichip module and VR4131DIMM.
 148
 149 config TANBAC_TB0226
 150         bool "Support for TANBAC Mbase(TB0226)"
 151         depends on TANBAC_TB022X
 152         select GPIO_VR41XX
 153         help
 154           The TANBAC Mbase(TB0226) is a MIPS-based platform manufactured by TANBAC.
 155           Please refer to <http://www.tanbac.co.jp/> about Mbase.
 156
 157 config TANBAC_TB0287
 158         bool "Support for TANBAC Mini-ITX DIMM base(TB0287)"
 159         depends on TANBAC_TB022X
 160         help
 161           The TANBAC Mini-ITX DIMM base(TB0287) is a MIPS-based platform manufactured by TANBAC.
 162           Please refer to <http://www.tanbac.co.jp/> about Mini-ITX DIMM base.
 163
 164 config VICTOR_MPC30X
 165         bool "Support for Victor MP-C303/304"
 166         depends on MACH_VR41XX
 167         select CPU_LITTLE_ENDIAN
 168         select DMA_NONCOHERENT
 169         select IRQ_CPU
 170         select HW_HAS_PCI
 171
 172 config ZAO_CAPCELLA
 173         bool "Support for ZAO Networks Capcella"
 174         depends on MACH_VR41XX
 175         select CPU_LITTLE_ENDIAN
 176         select DMA_NONCOHERENT
 177         select IRQ_CPU
 178         select HW_HAS_PCI
 179
 180 config PCI_VR41XX
 181         bool "Add PCI control unit support of NEC VR4100 series"
 182         depends on MACH_VR41XX && HW_HAS_PCI
 183         default y
 184         select PCI
 185
 186 config VRC4173
 187         tristate "Add NEC VRC4173 companion chip support"
 188         depends on MACH_VR41XX && PCI_VR41XX
 189         ---help---
 190           The NEC VRC4173 is a companion chip for NEC VR4122/VR4131.
 191
 192 config TOSHIBA_JMR3927
 193         bool "Support for Toshiba JMR-TX3927 board"
 194         select DMA_NONCOHERENT
 195         select HW_HAS_PCI
 196         select SWAP_IO_SPACE
 197         select SYS_SUPPORTS_32BIT_KERNEL
 198
 199 config MIPS_COBALT
 200         bool "Support for Cobalt Server"
 201         depends on EXPERIMENTAL
 202         select DMA_NONCOHERENT
 203         select HW_HAS_PCI
 204         select I8259
 205         select IRQ_CPU
 206         select SYS_SUPPORTS_32BIT_KERNEL
 207         select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
 208
 209 config MACH_DECSTATION
 210         bool "Support for DECstations"
 211         select BOOT_ELF32
 212         select DMA_NONCOHERENT
 213         select EARLY_PRINTK
 214         select IRQ_CPU
 215         select SYS_SUPPORTS_32BIT_KERNEL
 216         select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
 217         ---help---
 218           This enables support for DEC's MIPS based workstations.  For details
 219           see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
 220           DECstation porting pages on <http://decstation.unix-ag.org/>.
 221
 222           If you have one of the following DECstation Models you definitely
 223           want to choose R4xx0 for the CPU Type:
 224
 225                 DECstation 5000/50
 226                 DECstation 5000/150
 227                 DECstation 5000/260
 228                 DECsystem 5900/260
 229
 230           otherwise choose R3000.
 231
 232 config MIPS_EV64120
 233         bool "Support for Galileo EV64120 Evaluation board (EXPERIMENTAL)"
 234         depends on EXPERIMENTAL
 235         select DMA_NONCOHERENT
 236         select HW_HAS_PCI
 237         select MIPS_GT64120
 238         select SYS_SUPPORTS_32BIT_KERNEL
 239         select SYS_SUPPORTS_64BIT_KERNEL
 240         help
 241           This is an evaluation board based on the Galileo GT-64120
 242           single-chip system controller that contains a MIPS R5000 compatible
 243           core running at 75/100MHz.  Their website is located at
 244           <http://www.marvell.com/>.  Say Y here if you wish to build a
 245           kernel for this platform.
 246
 247 config EVB_PCI1
 248         bool "Enable Second PCI (PCI1)"
 249         depends on MIPS_EV64120
 250
 251 config MIPS_EV96100
 252         bool "Support for Galileo EV96100 Evaluation board (EXPERIMENTAL)"
 253         depends on EXPERIMENTAL
 254         select DMA_NONCOHERENT
 255         select HW_HAS_PCI
 256         select IRQ_CPU
 257         select MIPS_GT96100
 258         select RM7000_CPU_SCACHE
 259         select SWAP_IO_SPACE
 260         select SYS_SUPPORTS_32BIT_KERNEL
 261         select SYS_SUPPORTS_64BIT_KERNEL
 262         help
 263           This is an evaluation board based on the Galileo GT-96100 LAN/WAN
 264           communications controllers containing a MIPS R5000 compatible core
 265           running at 83MHz. Their website is <http://www.marvell.com/>. Say Y
 266           here if you wish to build a kernel for this platform.
 267
 268 config MIPS_IVR
 269         bool "Support for Globespan IVR board"
 270         select DMA_NONCOHERENT
 271         select HW_HAS_PCI
 272         select SYS_SUPPORTS_32BIT_KERNEL
 273         select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
 274         help
 275           This is an evaluation board built by Globespan to showcase thir
 276           iVR (Internet Video Recorder) design. It utilizes a QED RM5231
 277           R5000 MIPS core. More information can be found out their website
 278           located at <http://www.globespan.net/>. Say Y here if you wish to
 279           build a kernel for this platform.
 280
 281 config LASAT
 282         bool "Support for LASAT Networks platforms"
 283         select DMA_NONCOHERENT
 284         select HW_HAS_PCI
 285         select MIPS_GT64120
 286         select R5000_CPU_SCACHE
 287         select SYS_SUPPORTS_32BIT_KERNEL
 288         select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
 289
 290 config PICVUE
 291         tristate "PICVUE LCD display driver"
 292         depends on LASAT
 293
 294 config PICVUE_PROC
 295         tristate "PICVUE LCD display driver /proc interface"
 296         depends on PICVUE
 297
 298 config DS1603
 299         bool "DS1603 RTC driver"
 300         depends on LASAT
 301
 302 config LASAT_SYSCTL
 303         bool "LASAT sysctl interface"
 304         depends on LASAT
 305
 306 config MIPS_ITE8172
 307         bool "Support for ITE 8172G board"
 308         select DMA_NONCOHERENT
 309         select HW_HAS_PCI
 310         select SYS_SUPPORTS_32BIT_KERNEL
 311         select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
 312         help
 313           Ths is an evaluation board made by ITE <http://www.ite.com.tw/>
 314           with ATX form factor that utilizes a MIPS R5000 to work with its
 315           ITE8172G companion internet appliance chip. The MIPS core can be
 316           either a NEC Vr5432 or QED RM5231. Say Y here if you wish to build
 317           a kernel for this platform.
 318
 319 config IT8172_REVC
 320         bool "Support for older IT8172 (Rev C)"
 321         depends on MIPS_ITE8172
 322         help
 323           Say Y here to support the older, Revision C version of the Integrated
 324           Technology Express, Inc. ITE8172 SBC.  Vendor page at
 325           <http://www.ite.com.tw/ia/brief_it8172bsp.htm>; picture of the
 326           board at <http://www.mvista.com/partners/semiconductor/ite.html>.
 327
 328 config MIPS_ATLAS
 329         bool "Support for MIPS Atlas board"
 330         select BOOT_ELF32
 331         select DMA_NONCOHERENT
 332         select HW_HAS_PCI
 333         select MIPS_GT64120
 334         select RM7000_CPU_SCACHE
 335         select SWAP_IO_SPACE
 336         select SYS_SUPPORTS_32BIT_KERNEL
 337         select SYS_SUPPORTS_64BIT_KERNEL
 338         help
 339           This enables support for the MIPS Technologies Atlas evaluation
 340           board.
 341
 342 config MIPS_MALTA
 343         bool "Support for MIPS Malta board"
 344         select BOOT_ELF32
 345         select HAVE_STD_PC_SERIAL_PORT
 346         select DMA_NONCOHERENT
 347         select GENERIC_ISA_DMA
 348         select HW_HAS_PCI
 349         select I8259
 350         select MIPS_GT64120
 351         select SWAP_IO_SPACE
 352         select SYS_SUPPORTS_32BIT_KERNEL
 353         select SYS_SUPPORTS_64BIT_KERNEL
 354         help
 355           This enables support for the MIPS Technologies Malta evaluation
 356           board.
 357
 358 config MIPS_SEAD
 359         bool "Support for MIPS SEAD board (EXPERIMENTAL)"
 360         depends on EXPERIMENTAL
 361         select IRQ_CPU
 362         select DMA_NONCOHERENT
 363         select SYS_SUPPORTS_32BIT_KERNEL
 364         select SYS_SUPPORTS_64BIT_KERNEL
 365         help
 366           This enables support for the MIPS Technologies SEAD evaluation
 367           board.
 368
 369 config MOMENCO_OCELOT
 370         bool "Support for Momentum Ocelot board"
 371         select DMA_NONCOHERENT
 372         select HW_HAS_PCI
 373         select IRQ_CPU
 374         select IRQ_CPU_RM7K
 375         select MIPS_GT64120
 376         select RM7000_CPU_SCACHE
 377         select SWAP_IO_SPACE
 378         select SYS_SUPPORTS_32BIT_KERNEL
 379         select SYS_SUPPORTS_64BIT_KERNEL
 380         help
 381           The Ocelot is a MIPS-based Single Board Computer (SBC) made by
 382           Momentum Computer <http://www.momenco.com/>.
 383
 384 config MOMENCO_OCELOT_G
 385         bool "Support for Momentum Ocelot-G board"
 386         select DMA_NONCOHERENT
 387         select HW_HAS_PCI
 388         select IRQ_CPU
 389         select IRQ_CPU_RM7K
 390         select PCI_MARVELL
 391         select RM7000_CPU_SCACHE
 392         select SWAP_IO_SPACE
 393         select SYS_SUPPORTS_32BIT_KERNEL
 394         select SYS_SUPPORTS_64BIT_KERNEL
 395         help
 396           The Ocelot is a MIPS-based Single Board Computer (SBC) made by
 397           Momentum Computer <http://www.momenco.com/>.
 398
 399 config MOMENCO_OCELOT_C
 400         bool "Support for Momentum Ocelot-C board"
 401         select DMA_NONCOHERENT
 402         select HW_HAS_PCI
 403         select IRQ_CPU
 404         select IRQ_MV64340
 405         select PCI_MARVELL
 406         select RM7000_CPU_SCACHE
 407         select SWAP_IO_SPACE
 408         select SYS_SUPPORTS_32BIT_KERNEL
 409         select SYS_SUPPORTS_64BIT_KERNEL
 410         help
 411           The Ocelot is a MIPS-based Single Board Computer (SBC) made by
 412           Momentum Computer <http://www.momenco.com/>.
 413
 414 config MOMENCO_OCELOT_3
 415         bool "Support for Momentum Ocelot-3 board"
 416         select BOOT_ELF32
 417         select DMA_NONCOHERENT
 418         select HW_HAS_PCI
 419         select IRQ_CPU
 420         select IRQ_CPU_RM7K
 421         select IRQ_MV64340
 422         select PCI_MARVELL
 423         select RM7000_CPU_SCACHE
 424         select SWAP_IO_SPACE
 425         select SYS_SUPPORTS_32BIT_KERNEL
 426         select SYS_SUPPORTS_64BIT_KERNEL
 427         help
 428           The Ocelot-3 is based off Discovery III System Controller and
 429           PMC-Sierra Rm79000 core.
 430
 431 config MOMENCO_JAGUAR_ATX
 432         bool "Support for Momentum Jaguar board"
 433         select BOOT_ELF32
 434         select DMA_NONCOHERENT
 435         select HW_HAS_PCI
 436         select IRQ_CPU
 437         select IRQ_CPU_RM7K
 438         select IRQ_MV64340
 439         select LIMITED_DMA
 440         select PCI_MARVELL
 441         select RM7000_CPU_SCACHE
 442         select SWAP_IO_SPACE
 443         select SYS_SUPPORTS_32BIT_KERNEL
 444         select SYS_SUPPORTS_64BIT_KERNEL
 445         help
 446           The Jaguar ATX is a MIPS-based Single Board Computer (SBC) made by
 447           Momentum Computer <http://www.momenco.com/>.
 448
 449 config JAGUAR_DMALOW
 450         bool "Low DMA Mode"
 451         depends on MOMENCO_JAGUAR_ATX
 452         help
 453           Select to Y if jump JP5 is set on your board, N otherwise.  Normally
 454           the jumper is set, so if you feel unsafe, just say Y.
 455
 456 config PMC_YOSEMITE
 457         bool "Support for PMC-Sierra Yosemite eval board"
 458         select DMA_COHERENT
 459         select HW_HAS_PCI
 460         select IRQ_CPU
 461         select IRQ_CPU_RM7K
 462         select IRQ_CPU_RM9K
 463         select SWAP_IO_SPACE
 464         select SYS_SUPPORTS_32BIT_KERNEL
 465         select SYS_SUPPORTS_64BIT_KERNEL
 466         help
 467           Yosemite is an evaluation board for the RM9000x2 processor
 468           manufactured by PMC-Sierra
 469
 470 config HYPERTRANSPORT
 471         bool "Hypertransport Support for PMC-Sierra Yosemite"
 472         depends on PMC_YOSEMITE
 473
 474 config DDB5074
 475         bool "Support for NEC DDB Vrc-5074 (EXPERIMENTAL)"
 476         depends on EXPERIMENTAL
 477         select DMA_NONCOHERENT
 478         select HAVE_STD_PC_SERIAL_PORT
 479         select HW_HAS_PCI
 480         select IRQ_CPU
 481         select I8259
 482         select ISA
 483         select SYS_SUPPORTS_32BIT_KERNEL
 484         select SYS_SUPPORTS_64BIT_KERNEL
 485         help
 486           This enables support for the VR5000-based NEC DDB Vrc-5074
 487           evaluation board.
 488
 489 config DDB5476
 490         bool "Support for NEC DDB Vrc-5476"
 491         select DMA_NONCOHERENT
 492         select HAVE_STD_PC_SERIAL_PORT
 493         select HW_HAS_PCI
 494         select IRQ_CPU
 495         select I8259
 496         select ISA
 497         select SYS_SUPPORTS_32BIT_KERNEL
 498         select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
 499         help
 500           This enables support for the R5432-based NEC DDB Vrc-5476
 501           evaluation board.
 502
 503           Features : kernel debugging, serial terminal, NFS root fs, on-board
 504           ether port USB, AC97, PCI, PCI VGA card & framebuffer console,
 505           IDE controller, PS2 keyboard, PS2 mouse, etc.
 506
 507 config DDB5477
 508         bool "Support for NEC DDB Vrc-5477"
 509         select DMA_NONCOHERENT
 510         select HW_HAS_PCI
 511         select I8259
 512         select IRQ_CPU
 513         select SYS_SUPPORTS_32BIT_KERNEL
 514         select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
 515         help
 516           This enables support for the R5432-based NEC DDB Vrc-5477,
 517           or Rockhopper/SolutionGear boards with R5432/R5500 CPUs.
 518
 519           Features : kernel debugging, serial terminal, NFS root fs, on-board
 520           ether port USB, AC97, PCI, etc.
 521
 522 config DDB5477_BUS_FREQUENCY
 523         int "bus frequency (in kHZ, 0 for auto-detect)"
 524         depends on DDB5477
 525         default 0
 526
 527 config QEMU
 528         bool "Support for Qemu"
 529         select DMA_COHERENT
 530         select GENERIC_ISA_DMA
 531         select HAVE_STD_PC_SERIAL_PORT
 532         select I8259
 533         select ISA
 534         select SWAP_IO_SPACE
 535         select SYS_SUPPORTS_32BIT_KERNEL
 536         select SYS_SUPPORTS_BIG_ENDIAN
 537         help
 538          Qemu is a software emulator which among other architectures also
 539          can simulate a MIPS32 4Kc system.  This patch adds support for the
 540          system architecture that currently is being simulated by Qemu.  It
 541          will eventually be removed again when Qemu has the capability to
 542          simulate actual MIPS hardware platforms.  More information on Qemu
 543          can be found at http://www.linux-mips.org/wiki/Qemu.
 544
 545 config SGI_IP22
 546         bool "Support for SGI IP22 (Indy/Indigo2)"
 547         select ARC
 548         select ARC32
 549         select BOOT_ELF32
 550         select DMA_NONCOHERENT
 551         select IP22_CPU_SCACHE
 552         select IRQ_CPU
 553         select SWAP_IO_SPACE
 554         select SYS_SUPPORTS_32BIT_KERNEL
 555         select SYS_SUPPORTS_64BIT_KERNEL
 556         help
 557           This are the SGI Indy, Challenge S and Indigo2, as well as certain
 558           OEM variants like the Tandem CMN B006S. To compile a Linux kernel
 559           that runs on these, say Y here.
 560
 561 config SGI_IP27
 562         bool "Support for SGI IP27 (Origin200/2000)"
 563         select ARC
 564         select ARC64
 565         select DMA_IP27
 566         select HW_HAS_PCI
 567         select PCI_DOMAINS
 568         select SYS_SUPPORTS_64BIT_KERNEL
 569         help
 570           This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
 571           workstations.  To compile a Linux kernel that runs on these, say Y
 572           here.
 573
 574 #config SGI_SN0_XXL
 575 #       bool "IP27 XXL"
 576 #       depends on SGI_IP27
 577 #         This options adds support for userspace processes upto 16TB size.
 578 #         Normally the limit is just .5TB.
 579
 580 config SGI_SN0_N_MODE
 581         bool "IP27 N-Mode"
 582         depends on SGI_IP27
 583         help
 584           The nodes of Origin 200, Origin 2000 and Onyx 2 systems can be
 585           configured in either N-Modes which allows for more nodes or M-Mode
 586           which allows for more memory.  Your system is most probably
 587           running in M-Mode, so you should say N here.
 588
 589 config ARCH_DISCONTIGMEM_ENABLE
 590         bool
 591         default y if SGI_IP27
 592         help
 593           Say Y to upport efficient handling of discontiguous physical memory,
 594           for architectures which are either NUMA (Non-Uniform Memory Access)
 595           or have huge holes in the physical address space for other reasons.
 596           See <file:Documentation/vm/numa> for more.
 597
 598 config NUMA
 599         bool "NUMA Support"
 600         depends on SGI_IP27
 601         help
 602           Say Y to compile the kernel to support NUMA (Non-Uniform Memory
 603           Access).  This option is for configuring high-end multiprocessor
 604           server machines.  If in doubt, say N.
 605
 606 config MAPPED_KERNEL
 607         bool "Mapped kernel support"
 608         depends on SGI_IP27
 609         help
 610           Change the way a Linux kernel is loaded into memory on a MIPS64
 611           machine.  This is required in order to support text replication and
 612           NUMA.  If you need to understand it, read the source code.
 613
 614 config REPLICATE_KTEXT
 615         bool "Kernel text replication support"
 616         depends on SGI_IP27
 617         help
 618           Say Y here to enable replicating the kernel text across multiple
 619           nodes in a NUMA cluster.  This trades memory for speed.
 620
 621 config REPLICATE_EXHANDLERS
 622         bool "Exception handler replication support"
 623         depends on SGI_IP27
 624         help
 625           Say Y here to enable replicating the kernel exception handlers
 626           across multiple nodes in a NUMA cluster. This trades memory for
 627           speed.
 628
 629 config SGI_IP32
 630         bool "Support for SGI IP32 (O2) (EXPERIMENTAL)"
 631         depends on EXPERIMENTAL
 632         select ARC
 633         select ARC32
 634         select BOOT_ELF32
 635         select OWN_DMA
 636         select DMA_IP32
 637         select DMA_NONCOHERENT
 638         select HW_HAS_PCI
 639         select R5000_CPU_SCACHE
 640         select RM7000_CPU_SCACHE
 641         select SYS_SUPPORTS_64BIT_KERNEL
 642         help
 643           If you want this kernel to run on SGI O2 workstation, say Y here.
 644
 645 config SOC_AU1200
 646         bool
 647         select SOC_AU1X00
 648
 649 config SOC_AU1X00
 650         bool "Support for AMD/Alchemy Au1X00 SOCs"
 651         select SYS_SUPPORTS_32BIT_KERNEL
 652
 653 choice
 654         prompt "Au1X00 SOC Type"
 655         depends on SOC_AU1X00
 656         help
 657           Say Y here to enable support for one of three AMD/Alchemy
 658           SOCs. For additional documentation see www.amd.com.
 659
 660 config SOC_AU1000
 661         bool "SOC_AU1000"
 662 config SOC_AU1100
 663         bool "SOC_AU1100"
 664 config SOC_AU1500
 665         bool "SOC_AU1500"
 666 config SOC_AU1550
 667         bool "SOC_AU1550"
 668
 669 endchoice
 670
 671 choice
 672         prompt "AMD/Alchemy Au1x00 board support"
 673         depends on SOC_AU1X00
 674         help
 675           These are evaluation boards built by AMD/Alchemy to
 676           showcase their Au1X00 Internet Edge Processors. The SOC design
 677           is based on the MIPS32 architecture running at 266/400/500MHz
 678           with many integrated peripherals. Further information can be
 679           found at their website, <http://www.amd.com/>. Say Y here if you
 680           wish to build a kernel for this platform.
 681
 682 config MIPS_PB1000
 683         bool "PB1000 board"
 684         depends on SOC_AU1000
 685         select DMA_NONCOHERENT
 686         select HW_HAS_PCI
 687         select SWAP_IO_SPACE
 688
 689 config MIPS_PB1100
 690         bool "PB1100 board"
 691         depends on SOC_AU1100
 692         select DMA_NONCOHERENT
 693         select HW_HAS_PCI
 694         select SWAP_IO_SPACE
 695
 696 config MIPS_PB1500
 697         bool "PB1500 board"
 698         depends on SOC_AU1500
 699         select DMA_NONCOHERENT
 700         select HW_HAS_PCI
 701
 702 config MIPS_PB1550
 703         bool "PB1550 board"
 704         depends on SOC_AU1550
 705         select DMA_COHERENT
 706         select HW_HAS_PCI
 707         select MIPS_DISABLE_OBSOLETE_IDE
 708
 709 config MIPS_PB1200
 710         bool "AMD Alchemy PB1200 board"
 711         select SOC_AU1200
 712         select DMA_NONCOHERENT
 713         select MIPS_DISABLE_OBSOLETE_IDE
 714         select SYS_SUPPORTS_LITTLE_ENDIAN
 715
 716 config MIPS_DB1000
 717         bool "DB1000 board"
 718         depends on SOC_AU1000
 719         select DMA_NONCOHERENT
 720         select HW_HAS_PCI
 721
 722 config MIPS_DB1100
 723         bool "DB1100 board"
 724         depends on SOC_AU1100
 725         select DMA_NONCOHERENT
 726
 727 config MIPS_DB1500
 728         bool "DB1500 board"
 729         depends on SOC_AU1500
 730         select DMA_NONCOHERENT
 731         select HW_HAS_PCI
 732         select MIPS_DISABLE_OBSOLETE_IDE
 733
 734 config MIPS_DB1550
 735         bool "DB1550 board"
 736         depends on SOC_AU1550
 737         select HW_HAS_PCI
 738         select DMA_NONCOHERENT
 739         select MIPS_DISABLE_OBSOLETE_IDE
 740
 741 config MIPS_BOSPORUS
 742         bool "Bosporus board"
 743         depends on SOC_AU1500
 744         select DMA_NONCOHERENT
 745
 746 config MIPS_DB1200
 747         bool "AMD Alchemy DB1200 board"
 748         select SOC_AU1200
 749         select DMA_NONCOHERENT
 750         select MIPS_DISABLE_OBSOLETE_IDE
 751         select SYS_SUPPORTS_LITTLE_ENDIAN
 752
 753 config MIPS_MIRAGE
 754         bool "Mirage board"
 755         depends on SOC_AU1500
 756         select DMA_NONCOHERENT
 757
 758 config MIPS_XXS1500
 759         bool "MyCable XXS1500 board"
 760         depends on SOC_AU1500
 761         select DMA_NONCOHERENT
 762
 763 config MIPS_MTX1
 764         bool "4G Systems MTX-1 board"
 765         depends on SOC_AU1500
 766         select HW_HAS_PCI
 767         select DMA_NONCOHERENT
 768
 769 endchoice
 770
 771 config SNI_RM200_PCI
 772         bool "Support for SNI RM200 PCI"
 773         select ARC
 774         select ARC32
 775         select BOOT_ELF32
 776         select DMA_NONCOHERENT
 777         select GENERIC_ISA_DMA
 778         select HAVE_STD_PC_SERIAL_PORT
 779         select HW_HAS_PCI
 780         select I8259
 781         select ISA
 782         select SYS_SUPPORTS_32BIT_KERNEL
 783         select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
 784         help
 785           The SNI RM200 PCI was a MIPS-based platform manufactured by Siemens
 786           Nixdorf Informationssysteme (SNI), parent company of Pyramid
 787           Technology and now in turn merged with Fujitsu.  Say Y here to
 788           support this machine type.
 789
 790 config TOSHIBA_RBTX4927
 791         bool "Support for Toshiba TBTX49[23]7 board"
 792         select DMA_NONCOHERENT
 793         select HAS_TXX9_SERIAL
 794         select HW_HAS_PCI
 795         select I8259
 796         select ISA
 797         select SWAP_IO_SPACE
 798         select SYS_SUPPORTS_32BIT_KERNEL
 799         select SYS_SUPPORTS_64BIT_KERNEL
 800         help
 801           This Toshiba board is based on the TX4927 processor. Say Y here to
 802           support this machine type
 803
 804 config TOSHIBA_FPCIB0
 805         bool "FPCIB0 Backplane Support"
 806         depends on TOSHIBA_RBTX4927
 807
 808 source "arch/mips/sgi-ip27/Kconfig"
 809 source "arch/mips/sibyte/Kconfig"
 810
 811 config RWSEM_GENERIC_SPINLOCK
 812         bool
 813         default y
 814
 815 config RWSEM_XCHGADD_ALGORITHM
 816         bool
 817
 818 config GENERIC_CALIBRATE_DELAY
 819         bool
 820         default y
 821
 822 #
 823 # Select some configuration options automatically based on user selections.
 824 #
 825 config ARC
 826         bool
 827         depends on SNI_RM200_PCI || SGI_IP32 || SGI_IP27 || SGI_IP22 || MIPS_MAGNUM_4000 || OLIVETTI_M700 || ACER_PICA_61
 828         default y
 829
 830 config DMA_COHERENT
 831         bool
 832
 833 config DMA_IP27
 834         bool
 835
 836 config DMA_IP32
 837         bool
 838         select DMA_NEED_PCI_MAP_STATE
 839
 840 config DMA_NONCOHERENT
 841         bool
 842         select DMA_NEED_PCI_MAP_STATE
 843
 844 config DMA_NEED_PCI_MAP_STATE
 845         bool
 846
 847 config EARLY_PRINTK
 848         bool
 849         depends on MACH_DECSTATION
 850         default y
 851
 852 config GENERIC_ISA_DMA
 853         bool
 854         depends on SNI_RM200_PCI || MIPS_MAGNUM_4000 || OLIVETTI_M700 || ACER_PICA_61 || MIPS_MALTA
 855         default y
 856
 857 config I8259
 858         bool
 859         depends on SNI_RM200_PCI || DDB5477 || DDB5476 || DDB5074 || MACH_JAZZ || MIPS_MALTA || MIPS_COBALT
 860         default y
 861
 862 config LIMITED_DMA
 863         bool
 864         select HIGHMEM
 865
 866 config MIPS_BONITO64
 867         bool
 868         depends on MIPS_ATLAS || MIPS_MALTA
 869         default y
 870
 871 config MIPS_MSC
 872         bool
 873         depends on MIPS_ATLAS || MIPS_MALTA
 874         default y
 875
 876 config MIPS_NILE4
 877         bool
 878         depends on LASAT
 879         default y
 880
 881 config MIPS_DISABLE_OBSOLETE_IDE
 882         bool
 883
 884 config CPU_LITTLE_ENDIAN
 885         bool "Generate little endian code"
 886         default y if ACER_PICA_61 || CASIO_E55 || DDB5074 || DDB5476 || DDB5477 || MACH_DECSTATION || IBM_WORKPAD || LASAT || MIPS_COBALT || MIPS_ITE8172 || MIPS_IVR || SOC_AU1X00 || OLIVETTI_M700 || SNI_RM200_PCI || VICTOR_MPC30X || ZAO_CAPCELLA
 887         default n if MIPS_EV64120 || MIPS_EV96100 || MOMENCO_OCELOT || MOMENCO_OCELOT_G || SGI_IP22 || SGI_IP27 || SGI_IP32 || TOSHIBA_JMR3927
 888         help
 889           Some MIPS machines can be configured for either little or big endian
 890           byte order. These modes require different kernels. Say Y if your
 891           machine is little endian, N if it's a big endian machine.
 892
 893 config IRQ_CPU
 894         bool
 895
 896 config IRQ_CPU_RM7K
 897         bool
 898
 899 config IRQ_MV64340
 900         bool
 901
 902 config DDB5XXX_COMMON
 903         bool
 904         depends on DDB5074 || DDB5476 || DDB5477
 905         default y
 906
 907 config MIPS_BOARDS_GEN
 908         bool
 909         depends on MIPS_ATLAS || MIPS_MALTA || MIPS_SEAD
 910         default y
 911
 912 config MIPS_GT64111
 913         bool
 914         depends on MIPS_COBALT
 915         default y
 916
 917 config MIPS_GT64120
 918         bool
 919         depends on MIPS_EV64120 || MIPS_EV96100 || LASAT || MIPS_ATLAS || MIPS_MALTA || MOMENCO_OCELOT
 920         default y
 921
 922 config MIPS_TX3927
 923         bool
 924         depends on TOSHIBA_JMR3927
 925         select HAS_TXX9_SERIAL
 926         default y
 927
 928 config PCI_MARVELL
 929         bool
 930
 931 config ITE_BOARD_GEN
 932         bool
 933         depends on MIPS_IVR || MIPS_ITE8172
 934         default y
 935
 936 config SWAP_IO_SPACE
 937         bool
 938
 939 #
 940 # Unfortunately not all GT64120 systems run the chip at the same clock.
 941 # As the user for the clock rate and try to minimize the available options.
 942 #
 943 choice
 944         prompt "Galileo Chip Clock"
 945         #default SYSCLK_83 if MIPS_EV64120
 946         depends on MIPS_EV64120 || MOMENCO_OCELOT || MOMENCO_OCELOT_G
 947         default SYSCLK_83 if MIPS_EV64120
 948         default SYSCLK_100 if MOMENCO_OCELOT || MOMENCO_OCELOT_G
 949
 950 config SYSCLK_75
 951         bool "75" if MIPS_EV64120
 952
 953 config SYSCLK_83
 954         bool "83.3" if MIPS_EV64120
 955
 956 config SYSCLK_100
 957         bool "100" if MIPS_EV64120 || MOMENCO_OCELOT || MOMENCO_OCELOT_G
 958
 959 endchoice
 960
 961 config AU1X00_USB_DEVICE
 962         bool
 963         depends on MIPS_PB1500 || MIPS_PB1100 || MIPS_PB1000
 964         default n
 965
 966 config MIPS_GT96100
 967         bool
 968         depends on MIPS_EV96100
 969         default y
 970         help
 971           Say Y here to support the Galileo Technology GT96100 communications
 972           controller card.  There is a web page at <http://www.galileot.com/>.
 973
 974 config IT8172_CIR
 975         bool
 976         depends on MIPS_ITE8172 || MIPS_IVR
 977         default y
 978
 979 config IT8712
 980         bool
 981         depends on MIPS_ITE8172
 982         default y
 983
 984 config BOOT_ELF32
 985         bool
 986         depends on MACH_DECSTATION || MIPS_ATLAS || MIPS_MALTA || MOMENCO_JAGUAR_ATX || MOMENCO_OCELOT_3 || SIBYTE_SB1xxx_SOC || SGI_IP32 || SGI_IP22 || SNI_RM200_PCI
 987         default y
 988
 989 config MIPS_L1_CACHE_SHIFT
 990         int
 991         default "4" if MACH_DECSTATION
 992         default "7" if SGI_IP27
 993         default "5"
 994
 995 config ARC32
 996         bool
 997         depends on MACH_JAZZ || SNI_RM200_PCI || SGI_IP22 || SGI_IP32
 998         default y
 999
1000 config HAVE_STD_PC_SERIAL_PORT
1001         bool
1002
1003 config ARC_CONSOLE
1004         bool "ARC console support"
1005         depends on SGI_IP22 || SNI_RM200_PCI
1006
1007 config ARC_MEMORY
1008         bool
1009         depends on MACH_JAZZ || SNI_RM200_PCI || SGI_IP32
1010         default y
1011
1012 config ARC_PROMLIB
1013         bool
1014         depends on MACH_JAZZ || SNI_RM200_PCI || SGI_IP22 || SGI_IP32
1015         default y
1016
1017 config ARC64
1018         bool
1019         depends on SGI_IP27
1020         default y
1021
1022 config BOOT_ELF64
1023         bool
1024         depends on SGI_IP27
1025         default y
1026
1027 #config MAPPED_PCI_IO y
1028 #       bool
1029 #       depends on SGI_IP27
1030 #       default y
1031
1032 config QL_ISP_A64
1033         bool
1034         depends on SGI_IP27
1035         default y
1036
1037 config TOSHIBA_BOARDS
1038         bool
1039         depends on TOSHIBA_JMR3927 || TOSHIBA_RBTX4927
1040         default y
1041
1042 endmenu
1043
1044 menu "CPU selection"
1045
1046 choice
1047         prompt "CPU type"
1048         default CPU_R4X00
1049
1050 config CPU_MIPS32
1051         bool "MIPS32"
1052         select CPU_SUPPORTS_32BIT_KERNEL
1053
1054 config CPU_MIPS64
1055         bool "MIPS64"
1056         select CPU_SUPPORTS_32BIT_KERNEL
1057         select CPU_SUPPORTS_64BIT_KERNEL
1058
1059 config CPU_R3000
1060         bool "R3000"
1061         select CPU_SUPPORTS_32BIT_KERNEL
1062         help
1063           Please make sure to pick the right CPU type. Linux/MIPS is not
1064           designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1065           *not* work on R4000 machines and vice versa.  However, since most
1066           of the supported machines have an R4000 (or similar) CPU, R4x00
1067           might be a safe bet.  If the resulting kernel does not work,
1068           try to recompile with R3000.
1069
1070 config CPU_TX39XX
1071         bool "R39XX"
1072         select CPU_SUPPORTS_32BIT_KERNEL
1073
1074 config CPU_VR41XX
1075         bool "R41xx"
1076         select CPU_SUPPORTS_32BIT_KERNEL
1077         select CPU_SUPPORTS_64BIT_KERNEL
1078         help
1079           The options selects support for the NEC VR41xx series of processors.
1080           Only choose this option if you have one of these processors as a
1081           kernel built with this option will not run on any other type of
1082           processor or vice versa.
1083
1084 config CPU_R4300
1085         bool "R4300"
1086         select CPU_SUPPORTS_32BIT_KERNEL
1087         select CPU_SUPPORTS_64BIT_KERNEL
1088         help
1089           MIPS Technologies R4300-series processors.
1090
1091 config CPU_R4X00
1092         bool "R4x00"
1093         select CPU_SUPPORTS_32BIT_KERNEL
1094         select CPU_SUPPORTS_64BIT_KERNEL
1095         help
1096           MIPS Technologies R4000-series processors other than 4300, including
1097           the R4000, R4400, R4600, and 4700.
1098
1099 config CPU_TX49XX
1100         bool "R49XX"
1101         select CPU_SUPPORTS_32BIT_KERNEL
1102         select CPU_SUPPORTS_64BIT_KERNEL
1103
1104 config CPU_R5000
1105         bool "R5000"
1106         select CPU_SUPPORTS_32BIT_KERNEL
1107         select CPU_SUPPORTS_64BIT_KERNEL
1108         help
1109           MIPS Technologies R5000-series processors other than the Nevada.
1110
1111 config CPU_R5432
1112         bool "R5432"
1113
1114 config CPU_R6000
1115         bool "R6000"
1116         depends on EXPERIMENTAL
1117         select CPU_SUPPORTS_32BIT_KERNEL
1118         help
1119           MIPS Technologies R6000 and R6000A series processors.  Note these
1120           processors are extremly rare and the support for them is incomplete.
1121
1122 config CPU_NEVADA
1123         bool "RM52xx"
1124         select CPU_SUPPORTS_32BIT_KERNEL
1125         select CPU_SUPPORTS_64BIT_KERNEL
1126         help
1127           QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1128
1129 config CPU_R8000
1130         bool "R8000"
1131         depends on EXPERIMENTAL
1132         select CPU_SUPPORTS_64BIT_KERNEL
1133         help
1134           MIPS Technologies R8000 processors.  Note these processors are
1135           uncommon and the support for them is incomplete.
1136
1137 config CPU_R10000
1138         bool "R10000"
1139         select CPU_SUPPORTS_32BIT_KERNEL
1140         select CPU_SUPPORTS_64BIT_KERNEL
1141         help
1142           MIPS Technologies R10000-series processors.
1143
1144 config CPU_RM7000
1145         bool "RM7000"
1146         select CPU_SUPPORTS_32BIT_KERNEL
1147         select CPU_SUPPORTS_64BIT_KERNEL
1148
1149 config CPU_RM9000
1150         bool "RM9000"
1151         select CPU_SUPPORTS_32BIT_KERNEL
1152         select CPU_SUPPORTS_64BIT_KERNEL
1153
1154 config CPU_SB1
1155         bool "SB1"
1156         select CPU_SUPPORTS_32BIT_KERNEL
1157         select CPU_SUPPORTS_64BIT_KERNEL
1158
1159 endchoice
1160
1161 choice
1162         prompt "Kernel page size"
1163         default PAGE_SIZE_4KB
1164
1165 config PAGE_SIZE_4KB
1166         bool "4kB"
1167         help
1168          This option select the standard 4kB Linux page size.  On some
1169          R3000-family processors this is the only available page size.  Using
1170          4kB page size will minimize memory consumption and is therefore
1171          recommended for low memory systems.
1172
1173 config PAGE_SIZE_8KB
1174         bool "8kB"
1175         depends on EXPERIMENTAL && CPU_R8000
1176         help
1177           Using 8kB page size will result in higher performance kernel at
1178           the price of higher memory consumption.  This option is available
1179           only on the R8000 processor.  Not that at the time of this writing
1180           this option is still high experimental; there are also issues with
1181           compatibility of user applications.
1182
1183 config PAGE_SIZE_16KB
1184         bool "16kB"
1185         depends on EXPERIMENTAL && !CPU_R3000 && !CPU_TX39XX
1186         help
1187           Using 16kB page size will result in higher performance kernel at
1188           the price of higher memory consumption.  This option is available on
1189           all non-R3000 family processor.  Not that at the time of this
1190           writing this option is still high experimental; there are also
1191           issues with compatibility of user applications.
1192
1193 config PAGE_SIZE_64KB
1194         bool "64kB"
1195         depends on EXPERIMENTAL && !CPU_R3000 && !CPU_TX39XX
1196         help
1197           Using 64kB page size will result in higher performance kernel at
1198           the price of higher memory consumption.  This option is available on
1199           all non-R3000 family processor.  Not that at the time of this
1200           writing this option is still high experimental; there are also
1201           issues with compatibility of user applications.
1202
1203 endchoice
1204
1205 config BOARD_SCACHE
1206         bool
1207
1208 config IP22_CPU_SCACHE
1209         bool
1210         select BOARD_SCACHE
1211
1212 config R5000_CPU_SCACHE
1213         bool
1214         select BOARD_SCACHE
1215
1216 config RM7000_CPU_SCACHE
1217         bool
1218         select BOARD_SCACHE
1219
1220 config SIBYTE_DMA_PAGEOPS
1221         bool "Use DMA to clear/copy pages"
1222         depends on CPU_SB1
1223         help
1224           Instead of using the CPU to zero and copy pages, use a Data Mover
1225           channel.  These DMA channels are otherwise unused by the standard
1226           SiByte Linux port.  Seems to give a small performance benefit.
1227
1228 config CPU_HAS_PREFETCH
1229         bool "Enable prefetches" if CPU_SB1 && !CPU_SB1_PASS_2
1230         default y if CPU_MIPS32 || CPU_MIPS64 || CPU_RM7000 || CPU_RM9000 || CPU_R10000
1231
1232 config VTAG_ICACHE
1233         bool "Support for Virtual Tagged I-cache" if CPU_MIPS64 || CPU_MIPS32
1234         default y if CPU_SB1
1235
1236 config SB1_PASS_1_WORKAROUNDS
1237         bool
1238         depends on CPU_SB1_PASS_1
1239         default y
1240
1241 config SB1_PASS_2_WORKAROUNDS
1242         bool
1243         depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
1244         default y
1245
1246 config SB1_PASS_2_1_WORKAROUNDS
1247         bool
1248         depends on CPU_SB1 && CPU_SB1_PASS_2
1249         default y
1250
1251 config 64BIT_PHYS_ADDR
1252         bool "Support for 64-bit physical address space"
1253         depends on (CPU_R4X00 || CPU_R5000 || CPU_RM7000 || CPU_RM9000 || CPU_R10000 || CPU_SB1 || CPU_MIPS32 || CPU_MIPS64) && 32BIT
1254
1255 config CPU_ADVANCED
1256         bool "Override CPU Options"
1257         depends on 32BIT
1258         help
1259           Saying yes here allows you to select support for various features
1260           your CPU may or may not have.  Most people should say N here.
1261
1262 config CPU_HAS_LLSC
1263         bool "ll/sc Instructions available" if CPU_ADVANCED
1264         default y if !CPU_ADVANCED && !CPU_R3000 && !CPU_VR41XX && !CPU_TX39XX
1265         help
1266           MIPS R4000 series and later provide the Load Linked (ll)
1267           and Store Conditional (sc) instructions. More information is
1268           available at <http://www.go-ecs.com/mips/miptek1.htm>.
1269
1270           Say Y here if your CPU has the ll and sc instructions.  Say Y here
1271           for better performance, N if you don't know.  You must say Y here
1272           for multiprocessor machines.
1273
1274 config CPU_HAS_LLDSCD
1275         bool "lld/scd Instructions available" if CPU_ADVANCED
1276         default y if !CPU_ADVANCED && !CPU_R3000 && !CPU_VR41XX && !CPU_TX39XX && !CPU_MIPS32
1277         help
1278           Say Y here if your CPU has the lld and scd instructions, the 64-bit
1279           equivalents of ll and sc.  Say Y here for better performance, N if
1280           you don't know.  You must say Y here for multiprocessor machines.
1281
1282 config CPU_HAS_WB
1283         bool "Writeback Buffer available" if CPU_ADVANCED
1284         default y if !CPU_ADVANCED && CPU_R3000 && MACH_DECSTATION
1285         help
1286           Say N here for slightly better performance.  You must say Y here for
1287           machines which require flushing of write buffers in software.  Saying
1288           Y is the safe option; N may result in kernel malfunction and crashes.
1289
1290 config CPU_HAS_SYNC
1291         bool
1292         depends on !CPU_R3000
1293         default y
1294
1295 #
1296 # - Highmem only makes sense for the 32-bit kernel.
1297 # - The current highmem code will only work properly on physically indexed
1298 #   caches such as R3000, SB1, R7000 or those that look like they're virtually
1299 #   indexed such as R4000/R4400 SC and MC versions or R10000.  So for the
1300 #   moment we protect the user and offer the highmem option only on machines
1301 #   where it's known to be safe.  This will not offer highmem on a few systems
1302 #   such as MIPS32 and MIPS64 CPUs which may have virtual and physically
1303 #   indexed CPUs but we're playing safe.
1304 # - We should not offer highmem for system of which we already know that they
1305 #   don't have memory configurations that could gain from highmem support in
1306 #   the kernel because they don't support configurations with RAM at physical
1307 #   addresses > 0x20000000.
1308 #
1309 config HIGHMEM
1310         bool "High Memory Support"
1311         depends on 32BIT && (CPU_R3000 || CPU_SB1 || CPU_R7000 || CPU_RM9000 || CPU_R10000) && !(MACH_DECSTATION || MOMENCO_JAGUAR_ATX)
1312
1313 config ARCH_FLATMEM_ENABLE
1314         def_bool y
1315         depends on !NUMA
1316
1317 source "mm/Kconfig"
1318
1319 config SMP
1320         bool "Multi-Processing support"
1321         depends on CPU_RM9000 || (SIBYTE_SB1250 && !SIBYTE_STANDALONE) || SGI_IP27
1322         ---help---
1323           This enables support for systems with more than one CPU. If you have
1324           a system with only one CPU, like most personal computers, say N. If
1325           you have a system with more than one CPU, say Y.
1326
1327           If you say N here, the kernel will run on single and multiprocessor
1328           machines, but will use only one CPU of a multiprocessor machine. If
1329           you say Y here, the kernel will run on many, but not all,
1330           singleprocessor machines. On a singleprocessor machine, the kernel
1331           will run faster if you say N here.
1332
1333           People using multiprocessor machines who say Y here should also say
1334           Y to "Enhanced Real Time Clock Support", below.
1335
1336           See also the <file:Documentation/smp.txt> and the SMP-HOWTO
1337           available at <http://www.tldp.org/docs.html#howto>.
1338
1339           If you don't know what to do here, say N.
1340
1341 config NR_CPUS
1342         int "Maximum number of CPUs (2-64)"
1343         range 2 64
1344         depends on SMP
1345         default "64" if SGI_IP27
1346         default "2"
1347         help
1348           This allows you to specify the maximum number of CPUs which this
1349           kernel will support.  The maximum supported value is 32 for 32-bit
1350           kernel and 64 for 64-bit kernels; the minimum value which makes
1351           sense is 2.
1352
1353           This is purely to save memory - each supported CPU adds
1354           approximately eight kilobytes to the kernel image.
1355
1356 config PREEMPT
1357         bool "Preemptible Kernel"
1358         help
1359           This option reduces the latency of the kernel when reacting to
1360           real-time or interactive events by allowing a low priority process to
1361           be preempted even if it is in kernel mode executing a system call.
1362           This allows applications to run more reliably even when the system is
1363           under load.
1364
1365 config RTC_DS1742
1366         bool "DS1742 BRAM/RTC support"
1367         depends on TOSHIBA_JMR3927 || TOSHIBA_RBTX4927
1368
1369 config MIPS_INSANE_LARGE
1370         bool "Support for large 64-bit configurations"
1371         depends on CPU_R10000 && 64BIT
1372         help
1373           MIPS R10000 does support a 44 bit / 16TB address space as opposed to
1374           previous 64-bit processors which only supported 40 bit / 1TB. If you
1375           need processes of more than 1TB virtual address space, say Y here.
1376           This will result in additional memory usage, so it is not
1377           recommended for normal users.
1378
1379 config RWSEM_GENERIC_SPINLOCK
1380         bool
1381         default y
1382
1383 endmenu
1384
1385 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
1386
1387 config HW_HAS_PCI
1388         bool
1389
1390 config PCI
1391         bool "Support for PCI controller"
1392         depends on HW_HAS_PCI
1393         help
1394           Find out whether you have a PCI motherboard. PCI is the name of a
1395           bus system, i.e. the way the CPU talks to the other stuff inside
1396           your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
1397           say Y, otherwise N.
1398
1399           The PCI-HOWTO, available from
1400           <http://www.tldp.org/docs.html#howto>, contains valuable
1401           information about which PCI hardware does work under Linux and which
1402           doesn't.
1403
1404 config PCI_DOMAINS
1405         bool
1406         depends on PCI
1407
1408 source "drivers/pci/Kconfig"
1409
1410 #
1411 # ISA support is now enabled via select.  Too many systems still have the one
1412 # or other ISA chip on the board that users don't know about so don't expect
1413 # users to choose the right thing ...
1414 #
1415 config ISA
1416         bool
1417
1418 config EISA
1419         bool "EISA support"
1420         depends on SGI_IP22 || SNI_RM200_PCI
1421         select ISA
1422         ---help---
1423           The Extended Industry Standard Architecture (EISA) bus was
1424           developed as an open alternative to the IBM MicroChannel bus.
1425
1426           The EISA bus provided some of the features of the IBM MicroChannel
1427           bus while maintaining backward compatibility with cards made for
1428           the older ISA bus.  The EISA bus saw limited use between 1988 and
1429           1995 when it was made obsolete by the PCI bus.
1430
1431           Say Y here if you are building a kernel for an EISA-based machine.
1432
1433           Otherwise, say N.
1434
1435 source "drivers/eisa/Kconfig"
1436
1437 config TC
1438         bool "TURBOchannel support"
1439         depends on MACH_DECSTATION
1440         help
1441           TurboChannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
1442           processors.  Documentation on writing device drivers for TurboChannel
1443           is available at:
1444           <http://www.cs.arizona.edu/computer.help/policy/DIGITAL_unix/AA-PS3HD-TET1_html/TITLE.html>.
1445
1446 #config ACCESSBUS
1447 #       bool "Access.Bus support"
1448 #       depends on TC
1449
1450 config MMU
1451         bool
1452         default y
1453
1454 config MCA
1455         bool
1456
1457 config SBUS
1458         bool
1459
1460 source "drivers/pcmcia/Kconfig"
1461
1462 source "drivers/pci/hotplug/Kconfig"
1463
1464 endmenu
1465
1466 menu "Executable file formats"
1467
1468 source "fs/Kconfig.binfmt"
1469
1470 config TRAD_SIGNALS
1471         bool
1472         default y if 32BIT
1473
1474 config BUILD_ELF64
1475         bool "Use 64-bit ELF format for building"
1476         depends on 64BIT
1477         help
1478           A 64-bit kernel is usually built using the 64-bit ELF binary object
1479           format as it's one that allows arbitrary 64-bit constructs.  For
1480           kernels that are loaded within the KSEG compatibility segments the
1481           32-bit ELF format can optionally be used resulting in a somewhat
1482           smaller binary, but this option is not explicitly supported by the
1483           toolchain and since binutils 2.14 it does not even work at all.
1484
1485           Say Y to use the 64-bit format or N to use the 32-bit one.
1486
1487           If unsure say Y.
1488
1489 config BINFMT_IRIX
1490         bool "Include IRIX binary compatibility"
1491         depends on !CPU_LITTLE_ENDIAN && 32BIT && BROKEN
1492
1493 config MIPS32_COMPAT
1494         bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
1495         depends on 64BIT
1496         help
1497           Select this option if you want Linux/MIPS 32-bit binary
1498           compatibility. Since all software available for Linux/MIPS is
1499           currently 32-bit you should say Y here.
1500
1501 config COMPAT
1502         bool
1503         depends on MIPS32_COMPAT
1504         default y
1505
1506 config MIPS32_O32
1507         bool "Kernel support for o32 binaries"
1508         depends on MIPS32_COMPAT
1509         help
1510           Select this option if you want to run o32 binaries.  These are pure
1511           32-bit binaries as used by the 32-bit Linux/MIPS port.  Most of
1512           existing binaries are in this format.
1513
1514           If unsure, say Y.
1515
1516 config MIPS32_N32
1517         bool "Kernel support for n32 binaries"
1518         depends on MIPS32_COMPAT
1519         help
1520           Select this option if you want to run n32 binaries.  These are
1521           64-bit binaries using 32-bit quantities for addressing and certain
1522           data that would normally be 64-bit.  They are used in special
1523           cases.
1524
1525           If unsure, say N.
1526
1527 config BINFMT_ELF32
1528         bool
1529         default y if MIPS32_O32 || MIPS32_N32
1530
1531 config PM
1532         bool "Power Management support (EXPERIMENTAL)"
1533         depends on EXPERIMENTAL && MACH_AU1X00
1534
1535 endmenu
1536
1537 source "net/Kconfig"
1538
1539 source "drivers/Kconfig"
1540
1541 source "fs/Kconfig"
1542
1543 source "arch/mips/Kconfig.debug"
1544
1545 source "security/Kconfig"
1546
1547 source "crypto/Kconfig"
1548
1549 source "lib/Kconfig"
1550
1551 #
1552 # Use the generic interrupt handling code in kernel/irq/:
1553 #
1554 config GENERIC_HARDIRQS
1555         bool
1556         default y
1557
1558 config GENERIC_IRQ_PROBE
1559         bool
1560         default y
1561
1562 config ISA_DMA_API
1563         bool
1564         default y