Kconfig 25.9 KB
Newer Older
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39
# For a description of the syntax of this configuration file,
# see Documentation/kbuild/kconfig-language.txt.
#

mainmenu "Linux/PowerPC Kernel Configuration"

config PPC64
	bool "64-bit kernel"
	default n
	help
	  This option selects whether a 32-bit or a 64-bit kernel
	  will be built.

config PPC32
	bool
	default y if !PPC64

config 64BIT
	bool
	default y if PPC64

config PPC_MERGE
	def_bool y

config MMU
	bool
	default y

config GENERIC_HARDIRQS
	bool
	default y

config RWSEM_GENERIC_SPINLOCK
	bool

config RWSEM_XCHGADD_ALGORITHM
	bool
	default y

40 41 42 43
config GENERIC_HWEIGHT
	bool
	default y

44 45 46 47
config GENERIC_CALIBRATE_DELAY
	bool
	default y

48 49 50 51
config GENERIC_FIND_NEXT_BIT
	bool
	default y

52 53 54 55 56 57
config PPC
	bool
	default y

config EARLY_PRINTK
	bool
58
	default y
59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81

config COMPAT
	bool
	default y if PPC64

config SYSVIPC_COMPAT
	bool
	depends on COMPAT && SYSVIPC
	default y

# All PPC32s use generic nvram driver through ppc_md
config GENERIC_NVRAM
	bool
	default y if PPC32

config SCHED_NO_NO_OMIT_FRAME_POINTER
	bool
	default y

config ARCH_MAY_HAVE_PC_FDC
	bool
	default y

82 83 84 85 86 87 88 89 90 91 92 93
config PPC_OF
	def_bool y

config PPC_UDBG_16550
	bool
	default n

config GENERIC_TBSYNC
	bool
	default y if PPC32 && SMP
	default n

94 95 96 97 98 99
config DEFAULT_UIMAGE
	bool
	help
	  Used to allow a board to specify it wants a uImage built by default
	default n

100 101 102 103 104 105
menu "Processor support"
choice
	prompt "Processor Type"
	depends on PPC32
	default 6xx

106
config CLASSIC32
107 108
	bool "6xx/7xx/74xx"
	select PPC_FPU
109
	select 6xx
110 111 112 113 114 115 116 117 118 119 120 121 122
	help
	  There are four families of PowerPC chips supported.  The more common
	  types (601, 603, 604, 740, 750, 7400), the Motorola embedded
	  versions (821, 823, 850, 855, 860, 52xx, 82xx, 83xx), the AMCC
	  embedded versions (403 and 405) and the high end 64 bit Power
	  processors (POWER 3, POWER4, and IBM PPC970 also known as G5).
	  
	  Unless you are building a kernel for one of the embedded processor
	  systems, 64 bit IBM RS/6000 or an Apple G5, choose 6xx.
	  Note that the kernel runs in 32-bit mode even on 64-bit chips.

config PPC_52xx
	bool "Freescale 52xx"
123 124
	select 6xx
	select PPC_FPU
125 126 127
	
config PPC_82xx
	bool "Freescale 82xx"
128 129
	select 6xx
	select PPC_FPU
130 131 132

config PPC_83xx
	bool "Freescale 83xx"
133 134 135 136
	select 6xx
	select FSL_SOC
	select 83xx
	select PPC_FPU
137

138 139 140 141 142 143
config PPC_85xx
	bool "Freescale 85xx"
	select E500
	select FSL_SOC
	select 85xx

144 145 146 147 148 149 150 151 152
config PPC_86xx
	bool "Freescale 86xx"
	select 6xx
	select FSL_SOC
	select PPC_FPU
	select ALTIVEC
	help
	  The Freescale E600 SoCs have 74xx cores.

153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168
config 40x
	bool "AMCC 40x"

config 44x
	bool "AMCC 44x"

config 8xx
	bool "Freescale 8xx"

config E200
	bool "Freescale e200"

endchoice

config POWER4_ONLY
	bool "Optimize for POWER4"
169
	depends on PPC64
170 171 172 173 174 175 176 177
	default n
	---help---
	  Cause the compiler to optimize for POWER4/POWER5/PPC970 processors.
	  The resulting binary will not work on POWER3 or RS64 processors
	  when compiled with binutils 2.15 or later.

config POWER3
	bool
178
	depends on PPC64
179 180 181
	default y if !POWER4_ONLY

config POWER4
182
	depends on PPC64
183 184
	def_bool y

185 186 187 188 189 190 191
config 6xx
	bool

# this is temp to handle compat with arch=ppc
config 83xx
	bool

192 193 194 195 196 197 198
# this is temp to handle compat with arch=ppc
config 85xx
	bool

config E500
	bool

199
config PPC_FPU
200 201
	bool
	default y if PPC64
202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230

config BOOKE
	bool
	depends on E200 || E500
	default y

config FSL_BOOKE
	bool
	depends on E200 || E500
	default y

config PTE_64BIT
	bool
	depends on 44x || E500
	default y if 44x
	default y if E500 && PHYS_64BIT

config PHYS_64BIT
	bool 'Large physical address support' if E500
	depends on 44x || E500
	default y if 44x
	---help---
	  This option enables kernel support for larger than 32-bit physical
	  addresses.  This features is not be available on all e500 cores.

	  If in doubt, say N here.

config ALTIVEC
	bool "AltiVec Support"
231
	depends on CLASSIC32 || POWER4
232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247
	---help---
	  This option enables kernel support for the Altivec extensions to the
	  PowerPC processor. The kernel currently supports saving and restoring
	  altivec registers, and turning on the 'altivec enable' bit so user
	  processes can execute altivec instructions.

	  This option is only usefully if you have a processor that supports
	  altivec (G4, otherwise known as 74xx series), but does not have
	  any affect on a non-altivec cpu (it does, however add code to the
	  kernel).

	  If in doubt, say Y here.

config SPE
	bool "SPE Support"
	depends on E200 || E500
248
	default y
249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269
	---help---
	  This option enables kernel support for the Signal Processing
	  Extensions (SPE) to the PowerPC processor. The kernel currently
	  supports saving and restoring SPE registers, and turning on the
	  'spe enable' bit so user processes can execute SPE instructions.

	  This option is only useful if you have a processor that supports
	  SPE (e500, otherwise known as 85xx series), but does not have any
	  effect on a non-spe cpu (it does, however add code to the kernel).

	  If in doubt, say Y here.

config PPC_STD_MMU
	bool
	depends on 6xx || POWER3 || POWER4 || PPC64
	default y

config PPC_STD_MMU_32
	def_bool y
	depends on PPC_STD_MMU && PPC32

270 271 272 273 274 275 276 277 278 279 280 281 282 283 284
config VIRT_CPU_ACCOUNTING
	bool "Deterministic task and CPU time accounting"
	depends on PPC64
	default y
	help
	  Select this option to enable more accurate task and CPU time
	  accounting.  This is done by reading a CPU counter on each
	  kernel entry and exit and on transitions within the kernel
	  between system, softirq and hardirq state, so there is a
	  small performance impact.  This also enables accounting of
	  stolen time on logically-partitioned systems running on
	  IBM POWER5-based machines.

	  If in doubt, say Y here.

285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304
config SMP
	depends on PPC_STD_MMU
	bool "Symmetric multi-processing support"
	---help---
	  This enables support for systems with more than one CPU. If you have
	  a system with only one CPU, say N. If you have a system with more
	  than one CPU, say Y.  Note that the kernel does not currently
	  support SMP machines with 603/603e/603ev or PPC750 ("G3") processors
	  since they have inadequate hardware support for multiprocessor
	  operation.

	  If you say N here, the kernel will run on single and multiprocessor
	  machines, but will use only one CPU of a multiprocessor machine. If
	  you say Y here, the kernel will run on single-processor machines.
	  On a single-processor machine, the kernel will run faster if you say
	  N here.

	  If you don't know what to do here, say N.

config NR_CPUS
305
	int "Maximum number of CPUs (2-128)"
306 307 308 309 310 311 312 313 314 315 316 317 318 319
	range 2 128
	depends on SMP
	default "32" if PPC64
	default "4"

config NOT_COHERENT_CACHE
	bool
	depends on 4xx || 8xx || E200
	default y
endmenu

source "init/Kconfig"

menu "Platform support"
320
	depends on PPC64 || CLASSIC32
321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338

choice
	prompt "Machine type"
	default PPC_MULTIPLATFORM

config PPC_MULTIPLATFORM
	bool "Generic desktop/server/laptop"
	help
	  Select this option if configuring for an IBM pSeries or
	  RS/6000 machine, an Apple machine, or a PReP, CHRP,
	  Maple or Cell-based machine.

config PPC_ISERIES
	bool "IBM Legacy iSeries"
	depends on PPC64

config EMBEDDED6xx
	bool "Embedded 6xx/7xx/7xxx-based board"
339
	depends on PPC32 && BROKEN
340 341 342 343 344 345 346 347 348 349 350 351

config APUS
	bool "Amiga-APUS"
	depends on PPC32 && BROKEN
	help
	  Select APUS if configuring for a PowerUP Amiga.
	  More information is available at:
	  <http://linux-apus.sourceforge.net/>.
endchoice

config PPC_PSERIES
	depends on PPC_MULTIPLATFORM && PPC64
352
	bool "IBM pSeries & new (POWER5-based) iSeries"
353
	select PPC_I8259
354 355
	select PPC_RTAS
	select RTAS_ERROR_LOGGING
356
	select PPC_UDBG_16550
357 358 359
	default y

config PPC_CHRP
360
	bool "Common Hardware Reference Platform (CHRP) based machines"
361
	depends on PPC_MULTIPLATFORM && PPC32
362
	select PPC_I8259
363
	select PPC_INDIRECT_PCI
364
	select PPC_RTAS
365
	select PPC_MPC106
366
	select PPC_UDBG_16550
367 368 369
	default y

config PPC_PMAC
370
	bool "Apple PowerMac based machines"
371
	depends on PPC_MULTIPLATFORM
372
	select PPC_INDIRECT_PCI if PPC32
373
	select PPC_MPC106 if PPC32
374 375 376 377 378
	default y

config PPC_PMAC64
	bool
	depends on PPC_PMAC && POWER4
379
	select U3_DART
380
	select MPIC_BROKEN_U3
381
	select GENERIC_TBSYNC
382
	select PPC_970_NAP
383 384 385
	default y

config PPC_PREP
386
	bool "PowerPC Reference Platform (PReP) based machines"
387
	depends on PPC_MULTIPLATFORM && PPC32 && BROKEN
388
	select PPC_I8259
389
	select PPC_INDIRECT_PCI
390
	select PPC_UDBG_16550
391 392 393 394
	default y

config PPC_MAPLE
	depends on PPC_MULTIPLATFORM && PPC64
395
	bool "Maple 970FX Evaluation Board"
396 397
	select U3_DART
	select MPIC_BROKEN_U3
398
	select GENERIC_TBSYNC
399
	select PPC_UDBG_16550
400
	select PPC_970_NAP
401 402 403 404 405
	default n
	help
          This option enables support for the Maple 970FX Evaluation Board.
	  For more informations, refer to <http://www.970eval.com>

406
config PPC_CELL
407 408 409 410 411 412 413 414 415 416
	bool
	default n

config PPC_CELL_NATIVE
	bool
	select PPC_CELL
	default n

config PPC_IBM_CELL_BLADE
	bool "  IBM Cell Blade"
417
	depends on PPC_MULTIPLATFORM && PPC64
418
	select PPC_CELL_NATIVE
419
	select PPC_RTAS
420
	select MMIO_NVRAM
421
	select PPC_UDBG_16550
422
	select UDBG_RTAS_CONSOLE
423

424 425 426 427
config UDBG_RTAS_CONSOLE
	bool
	default n

428 429 430 431 432 433 434 435 436 437 438
config XICS
	depends on PPC_PSERIES
	bool
	default y

config U3_DART
	bool 
	depends on PPC_MULTIPLATFORM && PPC64
	default n

config MPIC
439
	depends on PPC_PSERIES || PPC_PMAC || PPC_MAPLE || PPC_CHRP
440 441 442
	bool
	default y

443 444 445 446 447 448 449 450 451
config PPC_RTAS
	bool
	default n

config RTAS_ERROR_LOGGING
	bool
	depends on PPC_RTAS
	default n

452 453
config RTAS_PROC
	bool "Proc interface to RTAS"
454
	depends on PPC_RTAS
455 456 457 458 459
	default y

config RTAS_FLASH
	tristate "Firmware flash interface"
	depends on PPC64 && RTAS_PROC
460

461 462 463 464
config MMIO_NVRAM
	bool
	default n

465 466 467 468 469 470 471 472 473 474
config MPIC_BROKEN_U3
	bool
	depends on PPC_MAPLE
	default y

config IBMVIO
	depends on PPC_PSERIES || PPC_ISERIES
	bool
	default y

475 476 477 478 479 480
config IBMEBUS
	depends on PPC_PSERIES
	bool "Support for GX bus based adapters"
	help
	  Bus device driver for GX bus based adapters.

481 482 483 484
config PPC_MPC106
	bool
	default n

485 486 487 488
config PPC_970_NAP
	bool
	default n

489 490 491 492 493 494 495 496 497 498 499
source "drivers/cpufreq/Kconfig"

config CPU_FREQ_PMAC
	bool "Support for Apple PowerBooks"
	depends on CPU_FREQ && ADB_PMU && PPC32
	select CPU_FREQ_TABLE
	help
	  This adds support for frequency switching on Apple PowerBooks,
	  this currently includes some models of iBook & Titanium
	  PowerBook.

500 501 502 503 504 505 506 507
config CPU_FREQ_PMAC64
	bool "Support for some Apple G5s"
	depends on CPU_FREQ && PMAC_SMU && PPC64
	select CPU_FREQ_TABLE
	help
	  This adds support for frequency switching on Apple iMac G5,
	  and some of the more recent desktop G5 machines as well.

508 509 510 511 512 513 514 515 516 517 518 519 520 521 522
config PPC601_SYNC_FIX
	bool "Workarounds for PPC601 bugs"
	depends on 6xx && (PPC_PREP || PPC_PMAC)
	help
	  Some versions of the PPC601 (the first PowerPC chip) have bugs which
	  mean that extra synchronization instructions are required near
	  certain instructions, typically those that make major changes to the
	  CPU state.  These extra instructions reduce performance slightly.
	  If you say N here, these extra instructions will not be included,
	  resulting in a kernel which will run faster but may not run at all
	  on some systems with the PPC601 chip.

	  If in doubt, say Y here.

config TAU
523
	bool "On-chip CPU temperature sensor support"
524 525 526 527 528 529 530 531
	depends on 6xx
	help
	  G3 and G4 processors have an on-chip temperature sensor called the
	  'Thermal Assist Unit (TAU)', which, in theory, can measure the on-die
	  temperature within 2-4 degrees Celsius. This option shows the current
	  on-die temperature in /proc/cpuinfo if the cpu supports it.

	  Unfortunately, on some chip revisions, this sensor is very inaccurate
532
	  and in many cases, does not work at all, so don't assume the cpu
533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568
	  temp is actually what /proc/cpuinfo says it is.

config TAU_INT
	bool "Interrupt driven TAU driver (DANGEROUS)"
	depends on TAU
	---help---
	  The TAU supports an interrupt driven mode which causes an interrupt
	  whenever the temperature goes out of range. This is the fastest way
	  to get notified the temp has exceeded a range. With this option off,
	  a timer is used to re-check the temperature periodically.

	  However, on some cpus it appears that the TAU interrupt hardware
	  is buggy and can cause a situation which would lead unexplained hard
	  lockups.

	  Unless you are extending the TAU driver, or enjoy kernel/hardware
	  debugging, leave this option off.

config TAU_AVERAGE
	bool "Average high and low temp"
	depends on TAU
	---help---
	  The TAU hardware can compare the temperature to an upper and lower
	  bound.  The default behavior is to show both the upper and lower
	  bound in /proc/cpuinfo. If the range is large, the temperature is
	  either changing a lot, or the TAU hardware is broken (likely on some
	  G4's). If the range is small (around 4 degrees), the temperature is
	  relatively stable.  If you say Y here, a single temperature value,
	  halfway between the upper and lower bounds, will be reported in
	  /proc/cpuinfo.

	  If in doubt, say N here.
endmenu

source arch/powerpc/platforms/embedded6xx/Kconfig
source arch/powerpc/platforms/4xx/Kconfig
569
source arch/powerpc/platforms/83xx/Kconfig
570
source arch/powerpc/platforms/85xx/Kconfig
571
source arch/powerpc/platforms/86xx/Kconfig
572
source arch/powerpc/platforms/8xx/Kconfig
573
source arch/powerpc/platforms/cell/Kconfig
574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590

menu "Kernel options"

config HIGHMEM
	bool "High memory support"
	depends on PPC32

source kernel/Kconfig.hz
source kernel/Kconfig.preempt
source "fs/Kconfig.binfmt"

# We optimistically allocate largepages from the VM, so make the limit
# large enough (16MB). This badly named config option is actually
# max order + 1
config FORCE_MAX_ZONEORDER
	int
	depends on PPC64
M
Mike Kravetz 已提交
591
	default "9" if PPC_64K_PAGES
592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642
	default "13"

config MATH_EMULATION
	bool "Math emulation"
	depends on 4xx || 8xx || E200 || E500
	---help---
	  Some PowerPC chips designed for embedded applications do not have
	  a floating-point unit and therefore do not implement the
	  floating-point instructions in the PowerPC instruction set.  If you
	  say Y here, the kernel will include code to emulate a floating-point
	  unit, which will allow programs that use floating-point
	  instructions to run.

config IOMMU_VMERGE
	bool "Enable IOMMU virtual merging (EXPERIMENTAL)"
	depends on EXPERIMENTAL && PPC64
	default n
	help
	  Cause IO segments sent to a device for DMA to be merged virtually
	  by the IOMMU when they happen to have been allocated contiguously.
	  This doesn't add pressure to the IOMMU allocator. However, some
	  drivers don't support getting large merged segments coming back
	  from *_map_sg(). Say Y if you know the drivers you are using are
	  properly handling this case.

config HOTPLUG_CPU
	bool "Support for enabling/disabling CPUs"
	depends on SMP && HOTPLUG && EXPERIMENTAL && (PPC_PSERIES || PPC_PMAC)
	---help---
	  Say Y here to be able to disable and re-enable individual
	  CPUs at runtime on SMP machines.

	  Say N if you are unsure.

config KEXEC
	bool "kexec system call (EXPERIMENTAL)"
	depends on PPC_MULTIPLATFORM && EXPERIMENTAL
	help
	  kexec is a system call that implements the ability to shutdown your
	  current kernel, and to start another kernel.  It is like a reboot
	  but it is indepedent of the system firmware.   And like a reboot
	  you can start any kernel with it, not just Linux.

	  The name comes from the similiarity to the exec system call.

	  It is an ongoing process to be certain the hardware in a machine
	  is properly shutdown, so do not be surprised if this code does not
	  initially work for you.  It may help to enable device hotplugging
	  support.  As of this writing the exact hardware interface is
	  strongly in flux, so no good recommendation can be made.

643
config CRASH_DUMP
644
	bool "Build a kdump crash kernel (EXPERIMENTAL)"
645 646 647 648 649 650 651 652
	depends on PPC_MULTIPLATFORM && PPC64 && EXPERIMENTAL
	help
	  Build a kernel suitable for use as a kdump capture kernel.
	  The kernel will be linked at a different address than normal, and
	  so can only be used for Kdump.

	  Don't change this unless you know what you are doing.

653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676
config EMBEDDEDBOOT
	bool
	depends on 8xx || 8260
	default y

config PC_KEYBOARD
	bool "PC PS/2 style Keyboard"
	depends on 4xx || CPM2

config PPCBUG_NVRAM
	bool "Enable reading PPCBUG NVRAM during boot" if PPLUS || LOPEC
	default y if PPC_PREP

config IRQ_ALL_CPUS
	bool "Distribute interrupts on all CPUs by default"
	depends on SMP && !MV64360
	help
	  This option gives the kernel permission to distribute IRQs across
	  multiple CPUs.  Saying N here will route all IRQs to the first
	  CPU.  Generally saying Y is safe, although some problems have been
	  reported with SMP Power Macintoshes with this option enabled.

source "arch/powerpc/platforms/pseries/Kconfig"

677 678 679 680 681
config NUMA
	bool "NUMA support"
	depends on PPC64
	default y if SMP && PPC_PSERIES

Y
Yasunori Goto 已提交
682 683 684 685 686
config NODES_SHIFT
	int
	default "4"
	depends on NEED_MULTIPLE_NODES

687 688 689 690 691
config ARCH_SELECT_MEMORY_MODEL
	def_bool y
	depends on PPC64

config ARCH_FLATMEM_ENABLE
692 693
	def_bool y
	depends on (PPC64 && !NUMA) || PPC32
694

695
config ARCH_SPARSEMEM_ENABLE
696
	def_bool y
697
	depends on PPC64
698

699
config ARCH_SPARSEMEM_DEFAULT
700
	def_bool y
701
	depends on SMP && PPC_PSERIES
702 703 704 705 706 707 708

source "mm/Kconfig"

config HAVE_ARCH_EARLY_PFN_TO_NID
	def_bool y
	depends on NEED_MULTIPLE_NODES

M
Mike Kravetz 已提交
709 710 711 712
config ARCH_MEMORY_PROBE
	def_bool y
	depends on MEMORY_HOTPLUG

713 714
config PPC_64K_PAGES
	bool "64k page size"
715
	depends on PPC64
716 717 718 719 720 721 722
	help
	  This option changes the kernel logical page size to 64k. On machines
          without processor support for 64k pages, the kernel will simulate
          them by loading each individual 4k page on demand transparently,
          while on hardware with such support, it will be used to map
          normal application pages.

723 724 725 726 727 728 729 730 731
config SCHED_SMT
	bool "SMT (Hyperthreading) scheduler support"
	depends on PPC64 && SMP
	help
	  SMT scheduler support improves the CPU scheduler's decision making
	  when dealing with POWER5 cpus at a cost of slightly increased
	  overhead in some places. If unsure say N here.

config PROC_DEVICETREE
732 733
	bool "Support for device tree in /proc"
	depends on PROC_FS
734 735 736
	help
	  This option adds a device-tree directory under /proc which contains
	  an image of the device tree that the kernel copies from Open
737
	  Firmware or other boot firmware. If unsure, say Y here.
738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786

source "arch/powerpc/platforms/prep/Kconfig"

config CMDLINE_BOOL
	bool "Default bootloader kernel arguments"
	depends on !PPC_ISERIES

config CMDLINE
	string "Initial kernel command string"
	depends on CMDLINE_BOOL
	default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
	help
	  On some platforms, there is currently no way for the boot loader to
	  pass arguments to the kernel. For these platforms, you can supply
	  some command-line options at build time by entering them here.  In
	  most cases you will need to specify the root device here.

if !44x || BROKEN
source kernel/power/Kconfig
endif

config SECCOMP
	bool "Enable seccomp to safely compute untrusted bytecode"
	depends on PROC_FS
	default y
	help
	  This kernel feature is useful for number crunching applications
	  that may need to compute untrusted bytecode during their
	  execution. By using pipes or other transports made available to
	  the process as file descriptors supporting the read/write
	  syscalls, it's possible to isolate those applications in
	  their own address space using seccomp. Once seccomp is
	  enabled via /proc/<pid>/seccomp, it cannot be disabled
	  and the task is only allowed to execute a few safe syscalls
	  defined by each seccomp mode.

	  If unsure, say Y. Only embedded should say N here.

endmenu

config ISA_DMA_API
	bool
	default y

menu "Bus options"

config ISA
	bool "Support for ISA-bus hardware"
	depends on PPC_PREP || PPC_CHRP
787
	select PPC_I8259
788 789 790 791 792 793 794 795 796 797 798 799
	help
	  Find out whether you have ISA slots on your motherboard.  ISA is the
	  name of a bus system, i.e. the way the CPU talks to the other stuff
	  inside your box.  If you have an Apple machine, say N here; if you
	  have an IBM RS/6000 or pSeries machine or a PReP machine, say Y.  If
	  you have an embedded board, consult your board documentation.

config GENERIC_ISA_DMA
	bool
	depends on PPC64 || POWER4 || 6xx && !CPM2
	default y

800 801 802 803
config PPC_I8259
	bool
	default n

804 805 806
config PPC_INDIRECT_PCI
	bool
	depends on PCI
807
	default y if 40x || 44x
808 809
	default n

810 811 812 813 814 815
config EISA
	bool

config SBUS
	bool

816 817 818
config FSL_SOC
	bool

819 820 821 822 823
# Yes MCA RS/6000s exist but Linux-PPC does not currently support any
config MCA
	bool

config PCI
824 825
	bool "PCI support" if 40x || CPM2 || PPC_83xx || PPC_85xx || PPC_86xx || PPC_MPC52xx || (EMBEDDED && PPC_ISERIES)
	default y if !40x && !CPM2 && !8xx && !APUS && !PPC_83xx && !PPC_85xx && !PPC_86xx
826 827 828 829 830 831 832 833 834 835 836 837 838 839 840
	default PCI_PERMEDIA if !4xx && !CPM2 && !8xx && APUS
	default PCI_QSPAN if !4xx && !CPM2 && 8xx
	help
	  Find out whether your system includes a PCI bus. PCI is the name of
	  a bus system, i.e. the way the CPU talks to the other stuff inside
	  your box.  If you say Y here, the kernel will include drivers and
	  infrastructure code to support PCI bus devices.

config PCI_DOMAINS
	bool
	default PCI

config PCI_QSPAN
	bool "QSpan PCI"
	depends on !4xx && !CPM2 && 8xx
841
	select PPC_I8259
842 843 844 845 846 847 848
	help
	  Say Y here if you have a system based on a Motorola 8xx-series
	  embedded processor with a QSPAN PCI interface, otherwise say N.

config PCI_8260
	bool
	depends on PCI && 8260
849
	select PPC_INDIRECT_PCI
850 851 852
	default y

config 8260_PCI9
853
	bool "Enable workaround for MPC826x erratum PCI 9"
854 855 856 857
	depends on PCI_8260 && !ADS8272
	default y

choice
858
	prompt "IDMA channel for PCI 9 workaround"
859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874
	depends on 8260_PCI9

config 8260_PCI9_IDMA1
	bool "IDMA1"

config 8260_PCI9_IDMA2
	bool "IDMA2"

config 8260_PCI9_IDMA3
	bool "IDMA3"

config 8260_PCI9_IDMA4
	bool "IDMA4"

endchoice

875 876
source "drivers/pci/pcie/Kconfig"

877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004
source "drivers/pci/Kconfig"

source "drivers/pcmcia/Kconfig"

source "drivers/pci/hotplug/Kconfig"

endmenu

menu "Advanced setup"
	depends on PPC32

config ADVANCED_OPTIONS
	bool "Prompt for advanced kernel configuration options"
	help
	  This option will enable prompting for a variety of advanced kernel
	  configuration options.  These options can cause the kernel to not
	  work if they are set incorrectly, but can be used to optimize certain
	  aspects of kernel memory management.

	  Unless you know what you are doing, say N here.

comment "Default settings for advanced configuration options are used"
	depends on !ADVANCED_OPTIONS

config HIGHMEM_START_BOOL
	bool "Set high memory pool address"
	depends on ADVANCED_OPTIONS && HIGHMEM
	help
	  This option allows you to set the base address of the kernel virtual
	  area used to map high memory pages.  This can be useful in
	  optimizing the layout of kernel virtual memory.

	  Say N here unless you know what you are doing.

config HIGHMEM_START
	hex "Virtual start address of high memory pool" if HIGHMEM_START_BOOL
	default "0xfe000000"

config LOWMEM_SIZE_BOOL
	bool "Set maximum low memory"
	depends on ADVANCED_OPTIONS
	help
	  This option allows you to set the maximum amount of memory which
	  will be used as "low memory", that is, memory which the kernel can
	  access directly, without having to set up a kernel virtual mapping.
	  This can be useful in optimizing the layout of kernel virtual
	  memory.

	  Say N here unless you know what you are doing.

config LOWMEM_SIZE
	hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
	default "0x30000000"

config KERNEL_START_BOOL
	bool "Set custom kernel base address"
	depends on ADVANCED_OPTIONS
	help
	  This option allows you to set the kernel virtual address at which
	  the kernel will map low memory (the kernel image will be linked at
	  this address).  This can be useful in optimizing the virtual memory
	  layout of the system.

	  Say N here unless you know what you are doing.

config KERNEL_START
	hex "Virtual address of kernel base" if KERNEL_START_BOOL
	default "0xc0000000"

config TASK_SIZE_BOOL
	bool "Set custom user task size"
	depends on ADVANCED_OPTIONS
	help
	  This option allows you to set the amount of virtual address space
	  allocated to user tasks.  This can be useful in optimizing the
	  virtual memory layout of the system.

	  Say N here unless you know what you are doing.

config TASK_SIZE
	hex "Size of user task space" if TASK_SIZE_BOOL
	default "0x80000000"

config CONSISTENT_START_BOOL
	bool "Set custom consistent memory pool address"
	depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
	help
	  This option allows you to set the base virtual address
	  of the the consistent memory pool.  This pool of virtual
	  memory is used to make consistent memory allocations.

config CONSISTENT_START
	hex "Base virtual address of consistent memory pool" if CONSISTENT_START_BOOL
	default "0xff100000" if NOT_COHERENT_CACHE

config CONSISTENT_SIZE_BOOL
	bool "Set custom consistent memory pool size"
	depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
	help
	  This option allows you to set the size of the the
	  consistent memory pool.  This pool of virtual memory
	  is used to make consistent memory allocations.

config CONSISTENT_SIZE
	hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
	default "0x00200000" if NOT_COHERENT_CACHE

config BOOT_LOAD_BOOL
	bool "Set the boot link/load address"
	depends on ADVANCED_OPTIONS && !PPC_MULTIPLATFORM
	help
	  This option allows you to set the initial load address of the zImage
	  or zImage.initrd file.  This can be useful if you are on a board
	  which has a small amount of memory.

	  Say N here unless you know what you are doing.

config BOOT_LOAD
	hex "Link/load address for booting" if BOOT_LOAD_BOOL
	default "0x00400000" if 40x || 8xx || 8260
	default "0x01000000" if 44x
	default "0x00800000"

config PIN_TLB
	bool "Pinned Kernel TLBs (860 ONLY)"
	depends on ADVANCED_OPTIONS && 8xx
endmenu

S
Stephen Rothwell 已提交
1005 1006 1007
if PPC64
config KERNEL_START
	hex
S
Stephen Rothwell 已提交
1008
	default "0xc000000000000000"
S
Stephen Rothwell 已提交
1009 1010
endif

1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024
source "net/Kconfig"

source "drivers/Kconfig"

source "fs/Kconfig"

# XXX source "arch/ppc/8xx_io/Kconfig"

# XXX source "arch/ppc/8260_io/Kconfig"

source "arch/powerpc/platforms/iseries/Kconfig"

source "lib/Kconfig"

1025 1026 1027
menu "Instrumentation Support"
        depends on EXPERIMENTAL

1028 1029
source "arch/powerpc/oprofile/Kconfig"

1030 1031
config KPROBES
	bool "Kprobes (EXPERIMENTAL)"
L
Linus Torvalds 已提交
1032
	depends on PPC64 && EXPERIMENTAL && MODULES
1033 1034 1035 1036 1037 1038 1039 1040
	help
	  Kprobes allows you to trap at almost any kernel address and
	  execute a callback function.  register_kprobe() establishes
	  a probepoint and specifies the callback.  Kprobes is useful
	  for kernel debugging, non-intrusive instrumentation and testing.
	  If in doubt, say "N".
endmenu

1041 1042 1043 1044 1045 1046 1047 1048 1049 1050
source "arch/powerpc/Kconfig.debug"

source "security/Kconfig"

config KEYS_COMPAT
	bool
	depends on COMPAT && KEYS
	default y

source "crypto/Kconfig"