Kconfig 24.5 KB
Newer Older
1 2 3 4 5 6
# For a description of the syntax of this configuration file,
# see Documentation/kbuild/kconfig-language.txt.
#

mainmenu "Linux/PowerPC Kernel Configuration"

7
source "arch/powerpc/platforms/Kconfig.cputype"
8

9 10 11 12 13 14 15 16
config PPC32
	bool
	default y if !PPC64

config 64BIT
	bool
	default y if PPC64

17 18 19 20 21
config WORD_SIZE
	int
	default 64 if PPC64
	default 32 if !PPC64

22 23 24
config ARCH_PHYS_ADDR_T_64BIT
       def_bool PPC64 || PHYS_64BIT

25 26 27 28
config MMU
	bool
	default y

29 30 31
config GENERIC_CMOS_UPDATE
	def_bool y

32 33 34 35 36 37
config GENERIC_TIME
	def_bool y

config GENERIC_TIME_VSYSCALL
	def_bool y

38 39 40
config GENERIC_CLOCKEVENTS
	def_bool y

41 42 43 44
config GENERIC_HARDIRQS
	bool
	default y

45 46 47 48
config GENERIC_HARDIRQS_NO__DO_IRQ
	bool
	default y

49
config HAVE_SETUP_PER_CPU_AREA
50 51
	def_bool PPC64

52
config NEED_PER_CPU_EMBED_FIRST_CHUNK
53 54
	def_bool PPC64

55 56 57 58
config IRQ_PER_CPU
	bool
	default y

59 60
config NR_IRQS
	int "Number of virtual interrupt numbers"
61
	range 32 32768
62 63 64 65 66 67 68
	default "512"
	help
	  This defines the number of virtual interrupt numbers the kernel
	  can manage. Virtual interrupt numbers are what you see in
	  /proc/interrupts. If you configure your system to have too few,
	  drivers will fail to load or worse - handle with care.

69 70 71 72
config STACKTRACE_SUPPORT
	bool
	default y

A
Arnd Bergmann 已提交
73 74 75
config HAVE_LATENCYTOP_SUPPORT
	def_bool y

76 77 78 79 80 81 82 83
config TRACE_IRQFLAGS_SUPPORT
	bool
	default y

config LOCKDEP_SUPPORT
	bool
	default y

84 85 86 87 88 89 90
config RWSEM_GENERIC_SPINLOCK
	bool

config RWSEM_XCHGADD_ALGORITHM
	bool
	default y

N
Nick Piggin 已提交
91 92 93 94 95
config GENERIC_LOCKBREAK
	bool
	default y
	depends on SMP && PREEMPT

96 97
config ARCH_HAS_ILOG2_U32
	bool
98
	default y
99 100 101

config ARCH_HAS_ILOG2_U64
	bool
102
	default y if 64BIT
103

104 105 106 107
config GENERIC_HWEIGHT
	bool
	default y

108 109 110 111
config GENERIC_FIND_NEXT_BIT
	bool
	default y

112 113 114 115 116
config GENERIC_GPIO
	bool
	help
	  Generic GPIO API support

S
Stephen Rothwell 已提交
117 118 119
config ARCH_NO_VIRT_TO_BUS
	def_bool PPC64

120 121 122
config PPC
	bool
	default y
S
Steven Rostedt 已提交
123 124
	select HAVE_FTRACE_MCOUNT_RECORD
	select HAVE_DYNAMIC_FTRACE
125
	select HAVE_FUNCTION_TRACER
126
	select HAVE_FUNCTION_GRAPH_TRACER
M
Michael Buesch 已提交
127
	select ARCH_WANT_OPTIONAL_GPIOLIB
S
Sam Ravnborg 已提交
128
	select HAVE_IDE
B
Benjamin Herrenschmidt 已提交
129
	select HAVE_IOREMAP_PROT
130
	select HAVE_EFFICIENT_UNALIGNED_ACCESS
M
Mathieu Desnoyers 已提交
131
	select HAVE_KPROBES
132
	select HAVE_ARCH_KGDB
133
	select HAVE_KRETPROBES
134
	select HAVE_ARCH_TRACEHOOK
135
	select HAVE_LMB
136
	select HAVE_DMA_ATTRS
137
	select HAVE_DMA_API_DEBUG
138
	select USE_GENERIC_SMP_HELPERS if SMP
S
Steven Rostedt 已提交
139
	select HAVE_OPROFILE
140
	select HAVE_SYSCALL_WRAPPERS if PPC64
141
	select GENERIC_ATOMIC64 if PPC32
142
	select HAVE_PERF_EVENTS
143 144 145

config EARLY_PRINTK
	bool
146
	default y
147 148 149 150

config COMPAT
	bool
	default y if PPC64
151
	select COMPAT_BINFMT_ELF
152 153 154 155 156 157 158 159 160 161 162

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

163
config SCHED_OMIT_FRAME_POINTER
164 165 166 167 168
	bool
	default y

config ARCH_MAY_HAVE_PC_FDC
	bool
169
	default !PPC_PSERIES || PCI
170

171 172 173
config PPC_OF
	def_bool y

174 175 176
config OF
	def_bool y

177 178 179 180 181 182 183 184 185
config PPC_UDBG_16550
	bool
	default n

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

186 187 188 189
config AUDIT_ARCH
	bool
	default y

190 191 192 193 194
config GENERIC_BUG
	bool
	default y
	depends on BUG

195
config SYS_SUPPORTS_APM_EMULATION
K
Kumar Gala 已提交
196
	default y if PMAC_APM_EMU
197 198
	bool

199 200 201 202
config DTC
       bool
       default y

203 204 205 206 207 208
config DEFAULT_UIMAGE
	bool
	help
	  Used to allow a board to specify it wants a uImage built by default
	default n

209 210 211
config REDBOOT
	bool

212 213
config ARCH_HIBERNATION_POSSIBLE
	bool
214 215
	default y

J
Johannes Berg 已提交
216 217
config ARCH_SUSPEND_POSSIBLE
	def_bool y
218 219
	depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx || \
		   PPC_85xx || PPC_86xx
J
Johannes Berg 已提交
220

221 222 223 224 225 226 227 228 229 230 231 232 233
config PPC_DCR_NATIVE
	bool
	default n

config PPC_DCR_MMIO
	bool
	default n

config PPC_DCR
	bool
	depends on PPC_DCR_NATIVE || PPC_DCR_MMIO
	default y

234 235
config PPC_OF_PLATFORM_PCI
	bool
236
	depends on PCI
237 238 239
	depends on PPC64 # not supported on 32 bits yet
	default n

A
Akinobu Mita 已提交
240 241 242
config ARCH_SUPPORTS_DEBUG_PAGEALLOC
	def_bool y

243 244
source "init/Kconfig"

245 246
source "kernel/Kconfig.freezer"

247
source "arch/powerpc/sysdev/Kconfig"
248
source "arch/powerpc/platforms/Kconfig"
249 250 251 252 253 254 255

menu "Kernel options"

config HIGHMEM
	bool "High memory support"
	depends on PPC32

256
source kernel/time/Kconfig
257 258 259 260
source kernel/Kconfig.hz
source kernel/Kconfig.preempt
source "fs/Kconfig.binfmt"

261 262 263 264 265
config HUGETLB_PAGE_SIZE_VARIABLE
	bool
	depends on HUGETLB_PAGE
	default y

266 267
config MATH_EMULATION
	bool "Math emulation"
268
	depends on 4xx || 8xx || E200 || PPC_MPC832x || E500
269 270 271 272 273 274 275 276
	---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.

277 278 279 280 281 282 283 284 285 286 287
config 8XX_MINIMAL_FPEMU
	bool "Minimal math emulation for 8xx"
	depends on 8xx && !MATH_EMULATION
	help
	  Older arch/ppc kernels still emulated a few floating point
	  instructions such as load and store, even when full math
	  emulation is disabled.  Say "Y" here if you want to preserve
	  this behavior.

	  It is recommended that you build a soft-float userspace instead.

288
config IOMMU_VMERGE
289 290 291
	bool "Enable IOMMU virtual merging"
	depends on PPC64
	default y
292 293 294 295 296
	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
297 298 299
	  from *_map_sg().

	  Most drivers don't have this problem; it is safe to say Y here.
300

301 302 303
config IOMMU_HELPER
	def_bool PPC64

304 305 306 307 308 309 310 311 312 313
config SWIOTLB
	bool "SWIOTLB support"
	default n
	select IOMMU_HELPER
	---help---
	  Support for IO bounce buffering for systems without an IOMMU.
	  This allows us to DMA to the full physical address space on
	  platforms where the size of a physical address is larger
	  than the bus address.  Not all platforms support this.

314 315 316 317 318 319 320 321 322
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.

323 324 325 326
config ARCH_CPU_PROBE_RELEASE
	def_bool y
	depends on HOTPLUG_CPU

327 328 329
config ARCH_ENABLE_MEMORY_HOTPLUG
	def_bool y

330 331 332
config ARCH_HAS_WALK_MEMORY
	def_bool y

333 334 335
config ARCH_ENABLE_MEMORY_HOTREMOVE
	def_bool y

336 337
config KEXEC
	bool "kexec system call (EXPERIMENTAL)"
338
	depends on PPC_BOOK3S && EXPERIMENTAL
339 340 341
	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
342
	  but it is independent of the system firmware.   And like a reboot
343 344
	  you can start any kernel with it, not just Linux.

345
	  The name comes from the similarity to the exec system call.
346 347 348 349 350 351 352

	  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.

353
config CRASH_DUMP
354
	bool "Build a kdump crash kernel"
355 356
	depends on PPC64 || 6xx
	select RELOCATABLE if PPC64
357 358
	help
	  Build a kernel suitable for use as a kdump capture kernel.
359 360
	  The same kernel binary can be used as production kernel and dump
	  capture kernel.
361

362 363 364 365 366 367
config PHYP_DUMP
	bool "Hypervisor-assisted dump (EXPERIMENTAL)"
	depends on PPC_PSERIES && EXPERIMENTAL
	help
	  Hypervisor-assisted dump is meant to be a kdump replacement
	  offering robustness and speed not possible without system
368
	  hypervisor assistance.
369 370 371

	  If unsure, say "N"

372 373 374 375 376 377 378 379 380 381 382 383 384
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.

385 386 387 388 389 390 391 392 393 394 395 396 397
config SPARSE_IRQ
	bool "Support sparse irq numbering"
	default y
	help
	  This enables support for sparse irqs. This is useful for distro
	  kernels that want to define a high CONFIG_NR_CPUS value but still
	  want to have low kernel memory footprint on smaller machines.

	  ( Sparse IRQs can also be beneficial on NUMA boxes, as they spread
	    out the irq_desc[] array in a more NUMA-friendly way. )

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

398 399 400 401 402
config NUMA
	bool "NUMA support"
	depends on PPC64
	default y if SMP && PPC_PSERIES

Y
Yasunori Goto 已提交
403 404
config NODES_SHIFT
	int
405
	default "8" if PPC64
Y
Yasunori Goto 已提交
406 407 408
	default "4"
	depends on NEED_MULTIPLE_NODES

409 410 411 412 413
config MAX_ACTIVE_REGIONS
	int
	default "256" if PPC64
	default "32"

414 415 416 417 418
config ARCH_SELECT_MEMORY_MODEL
	def_bool y
	depends on PPC64

config ARCH_FLATMEM_ENABLE
419 420
	def_bool y
	depends on (PPC64 && !NUMA) || PPC32
421

422
config ARCH_SPARSEMEM_ENABLE
423
	def_bool y
424
	depends on PPC64
A
Andy Whitcroft 已提交
425
	select SPARSEMEM_VMEMMAP_ENABLE
426

427
config ARCH_SPARSEMEM_DEFAULT
428
	def_bool y
429
	depends on (SMP && PPC_PSERIES) || PPC_PS3
430

431
config ARCH_POPULATES_NODE_MAP
432
	def_bool y
433

434 435 436 437
config SYS_SUPPORTS_HUGETLBFS
       def_bool y
       depends on PPC_BOOK3S_64

438
source "mm/Kconfig"
439

M
Mike Kravetz 已提交
440 441 442 443
config ARCH_MEMORY_PROBE
	def_bool y
	depends on MEMORY_HOTPLUG

444 445 446 447 448 449 450 451 452
# Some NUMA nodes have memory ranges that span
# other nodes.  Even though a pfn is valid and
# between a node's start and end pfns, it may not
# reside on that node.  See memmap_init_zone()
# for details.
config NODES_SPAN_OTHER_NODES
	def_bool y
	depends on NEED_MULTIPLE_NODES

453 454 455 456 457
config PPC_HAS_HASH_64K
	bool
	depends on PPC64
	default n

458 459 460 461 462 463 464 465 466 467 468 469
config STDBINUTILS
	bool "Using standard binutils settings"
	depends on 44x
	default y
	help
	  Turning this option off allows you to select 256KB PAGE_SIZE on 44x.
	  Note, that kernel will be able to run only those applications,
	  which had been compiled using binutils later than 2.17.50.0.3 with
	  '-zmax-page-size' set to 256K (the default is 64K). Or, if using
	  the older binutils, you can patch them with a trivial patch, which
	  changes the ELF_MAXPAGESIZE definition from 0x10000 to 0x40000.

470 471 472
choice
	prompt "Page size"
	default PPC_4K_PAGES
473
	help
474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501
	  Select the kernel logical page size. Increasing the page size
	  will reduce software overhead at each page boundary, allow
	  hardware prefetch mechanisms to be more effective, and allow
	  larger dma transfers increasing IO efficiency and reducing
	  overhead. However the utilization of memory will increase.
	  For example, each cached file will using a multiple of the
	  page size to hold its contents and the difference between the
	  end of file and the end of page is wasted.

	  Some dedicated systems, such as software raid serving with
	  accelerated calculations, have shown significant increases.

	  If you configure a 64 bit kernel for 64k pages but the
	  processor does not support them, then the kernel will simulate
	  them with 4k pages, loading them on demand, but with the
	  reduced software overhead and larger internal fragmentation.
	  For the 32 bit kernel, a large page option will not be offered
	  unless it is supported by the configured processor.

	  If unsure, choose 4K_PAGES.

config PPC_4K_PAGES
	bool "4k page size"

config PPC_16K_PAGES
	bool "16k page size" if 44x

config PPC_64K_PAGES
502
	bool "64k page size" if 44x || PPC_STD_MMU_64 || PPC_BOOK3E_64
503 504
	select PPC_HAS_HASH_64K if PPC_STD_MMU_64

505 506
config PPC_256K_PAGES
	bool "256k page size" if 44x
507
	depends on !STDBINUTILS
508 509 510 511 512 513 514 515 516 517
	help
	  Make the page size 256k.

	  As the ELF standard only requires alignment to support page
	  sizes up to 64k, you will need to compile all of your user
	  space applications with a non-standard binutils settings
	  (see the STDBINUTILS description for details).

	  Say N unless you know what you are doing.

518
endchoice
519

520 521
config FORCE_MAX_ZONEORDER
	int "Maximum zone order"
522 523 524 525 526 527 528 529 530 531
	range 9 64 if PPC64 && PPC_64K_PAGES
	default "9" if PPC64 && PPC_64K_PAGES
	range 13 64 if PPC64 && !PPC_64K_PAGES
	default "13" if PPC64 && !PPC_64K_PAGES
	range 9 64 if PPC32 && PPC_16K_PAGES
	default "9" if PPC32 && PPC_16K_PAGES
	range 7 64 if PPC32 && PPC_64K_PAGES
	default "7" if PPC32 && PPC_64K_PAGES
	range 5 64 if PPC32 && PPC_256K_PAGES
	default "5" if PPC32 && PPC_256K_PAGES
J
Johannes Berg 已提交
532
	range 11 64
533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548
	default "11"
	help
	  The kernel memory allocator divides physically contiguous memory
	  blocks into "zones", where each zone is a power of two number of
	  pages.  This option selects the largest power of two that the kernel
	  keeps in the memory allocator.  If you need to allocate very large
	  blocks of physically contiguous memory, then you may need to
	  increase this value.

	  This config option is actually maximum order plus one. For example,
	  a value of 11 means that the largest free memory block is 2^10 pages.

	  The page size is not necessarily 4KB.  For example, on 64-bit
	  systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES.  Keep
	  this in mind when choosing a value for this option.

549 550
config PPC_SUBPAGE_PROT
	bool "Support setting protections for 4k subpages"
551
	depends on PPC_STD_MMU_64 && PPC_64K_PAGES
552 553 554 555 556
	help
	  This option adds support for a system call to allow user programs
	  to set access permissions (read/write, readonly, or no access)
	  on the 4k subpages of each 64k page.

557 558 559 560 561 562 563 564 565
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
566 567
	bool "Support for device tree in /proc"
	depends on PROC_FS
568 569 570
	help
	  This option adds a device-tree directory under /proc which contains
	  an image of the device tree that the kernel copies from Open
571
	  Firmware or other boot firmware. If unsure, say Y here.
572 573 574 575 576 577 578 579 580 581 582 583 584 585

config CMDLINE_BOOL
	bool "Default bootloader kernel arguments"

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.

586 587 588 589 590 591 592 593 594 595 596 597 598
config EXTRA_TARGETS
	string "Additional default image types"
	help
	  List additional targets to be built by the bootwrapper here (separated
	  by spaces).  This is useful for targets that depend of device tree
	  files in the .dts directory.

	  Targets in this list will be build as part of the default build
	  target, or when the user does a 'make zImage' or a
	  'make zImage.initrd'.

	  If unsure, leave blank

599
if !44x || BROKEN
600 601 602 603
config ARCH_WANTS_FREEZER_CONTROL
	def_bool y
	depends on ADB_PMU

604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627
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
628
	default !PPC_ISERIES || PCI
629 630 631 632 633 634

menu "Bus options"

config ISA
	bool "Support for ISA-bus hardware"
	depends on PPC_PREP || PPC_CHRP
635
	select PPC_I8259
636 637 638 639 640 641 642
	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.

643 644 645 646
config ZONE_DMA
	bool
	default y

647 648 649 650 651
config GENERIC_ISA_DMA
	bool
	depends on PPC64 || POWER4 || 6xx && !CPM2
	default y

652 653 654
config PPC_INDIRECT_PCI
	bool
	depends on PCI
655
	default y if 40x || 44x
656 657
	default n

658 659 660 661 662 663
config EISA
	bool

config SBUS
	bool

664 665 666
config FSL_SOC
	bool

667 668 669
config FSL_PCI
 	bool
	select PPC_INDIRECT_PCI
670
	select PCI_QUIRKS
671

672 673 674 675 676 677 678 679
config FSL_PMC
	bool
	default y
	depends on SUSPEND && (PPC_85xx || PPC_86xx)
	help
	  Freescale MPC85xx/MPC86xx power management controller support
	  (suspend/resume). For MPC83xx see platforms/83xx/suspend.c

680 681 682
config 4xx_SOC
	bool

683 684 685 686 687
config FSL_LBC
	bool
	help
	  Freescale Localbus support

688 689 690 691 692 693
config FSL_GTM
	bool
	depends on PPC_83xx || QUICC_ENGINE || CPM2
	help
	  Freescale General-purpose Timers support

694 695 696 697
# Yes MCA RS/6000s exist but Linux-PPC does not currently support any
config MCA
	bool

J
John Rigby 已提交
698 699 700 701 702 703
# Platforms that what PCI turned unconditionally just do select PCI
# in their config node.  Platforms that want to choose at config
# time should select PPC_PCI_CHOICE
config PPC_PCI_CHOICE
	bool

704
config PCI
J
John Rigby 已提交
705 706
	bool "PCI support" if PPC_PCI_CHOICE
	default y if !40x && !CPM2 && !8xx && !PPC_83xx \
707
		&& !PPC_85xx && !PPC_86xx && !GAMECUBE_COMMON
708
	default PCI_PERMEDIA if !4xx && !CPM2 && !8xx
709
	default PCI_QSPAN if !4xx && !CPM2 && 8xx
710
	select ARCH_SUPPORTS_MSI
711 712 713 714 715 716 717
	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
718 719 720 721
	def_bool PCI

config PCI_SYSCALL
	def_bool PCI
722 723 724 725

config PCI_QSPAN
	bool "QSpan PCI"
	depends on !4xx && !CPM2 && 8xx
726
	select PPC_I8259
727 728 729 730 731 732 733
	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
734
	select PPC_INDIRECT_PCI
735 736 737
	default y

config 8260_PCI9
738
	bool "Enable workaround for MPC826x erratum PCI 9"
739
	depends on PCI_8260 && !8272
740 741 742
	default y

choice
743
	prompt "IDMA channel for PCI 9 workaround"
744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759
	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

760 761
source "drivers/pci/pcie/Kconfig"

762 763 764 765 766 767
source "drivers/pci/Kconfig"

source "drivers/pcmcia/Kconfig"

source "drivers/pci/hotplug/Kconfig"

768 769 770 771 772 773 774 775 776 777 778 779 780
config HAS_RAPIDIO
	bool
	default n

config RAPIDIO
	bool "RapidIO support"
	depends on HAS_RAPIDIO
	help
	  If you say Y here, the kernel will include drivers and
	  infrastructure code to support RapidIO interconnect devices.

source "drivers/rapidio/Kconfig"

781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814
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 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"

815 816 817 818 819 820 821 822 823 824 825 826 827
config LOWMEM_CAM_NUM_BOOL
	bool "Set number of CAMs to use to map low memory"
	depends on ADVANCED_OPTIONS && FSL_BOOKE
	help
	  This option allows you to set the maximum number of CAM slots that
	  will be used to map low memory.  There are a limited number of slots
	  available and even more limited number that will fit in the L1 MMU.
	  However, using more entries will allow mapping more low memory.  This
	  can be useful in optimizing the layout of kernel virtual memory.

	  Say N here unless you know what you are doing.

config LOWMEM_CAM_NUM
828
	depends on FSL_BOOKE
829 830 831
	int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL
	default 3

832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863
config RELOCATABLE
	bool "Build a relocatable kernel (EXPERIMENTAL)"
	depends on EXPERIMENTAL && ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE
	help
	  This builds a kernel image that is capable of running at the
	  location the kernel is loaded at (some alignment restrictions may
	  exist).

	  One use is for the kexec on panic case where the recovery kernel
	  must live at a different physical address than the primary
	  kernel.

	  Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address
	  it has been loaded at and the compile time physical addresses
	  CONFIG_PHYSICAL_START is ignored.  However CONFIG_PHYSICAL_START
	  setting can still be useful to bootwrappers that need to know the
	  load location of the kernel (eg. u-boot/mkimage).

config PAGE_OFFSET_BOOL
	bool "Set custom page offset address"
	depends on ADVANCED_OPTIONS
	help
	  This option allows you to set the kernel virtual address at which
	  the kernel will map low memory.  This can be useful in optimizing
	  the virtual memory layout of the system.

	  Say N here unless you know what you are doing.

config PAGE_OFFSET
	hex "Virtual address of memory base" if PAGE_OFFSET_BOOL
	default "0xc0000000"

864 865 866 867 868
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
869 870 871
	  the kernel will be loaded.  Normally this should match PAGE_OFFSET
	  however there are times (like kdump) that one might not want them
	  to be the same.
872 873 874 875 876

	  Say N here unless you know what you are doing.

config KERNEL_START
	hex "Virtual address of kernel base" if KERNEL_START_BOOL
877 878
	default PAGE_OFFSET if PAGE_OFFSET_BOOL
	default "0xc2000000" if CRASH_DUMP
879 880
	default "0xc0000000"

881 882 883 884 885 886 887 888 889 890 891 892 893 894 895
config PHYSICAL_START_BOOL
	bool "Set physical address where the kernel is loaded"
	depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE
	help
	  This gives the physical address where the kernel is loaded.

	  Say N here unless you know what you are doing.

config PHYSICAL_START
	hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL
	default "0x02000000" if PPC_STD_MMU && CRASH_DUMP
	default "0x00000000"

config PHYSICAL_ALIGN
	hex
896
	default "0x04000000" if FSL_BOOKE
897 898 899 900 901
	help
	  This value puts the alignment restrictions on physical address
	  where kernel is loaded and run from. Kernel is compiled for an
	  address which meets above alignment restriction.

902 903 904 905 906 907 908 909 910 911 912 913
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
914 915
	default "0x80000000" if PPC_PREP || PPC_8xx
	default "0xc0000000"
916

917 918 919 920 921 922 923 924 925 926 927 928
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
	  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

929 930 931 932 933
config PIN_TLB
	bool "Pinned Kernel TLBs (860 ONLY)"
	depends on ADVANCED_OPTIONS && 8xx
endmenu

S
Stephen Rothwell 已提交
934
if PPC64
935 936 937 938 939 940 941 942 943 944 945 946 947
config RELOCATABLE
	bool "Build a relocatable kernel"
	help
	  This builds a kernel image that is capable of running anywhere
	  in the RMA (real memory area) at any 16k-aligned base address.
	  The kernel is linked as a position-independent executable (PIE)
	  and contains dynamic relocations which are processed early
	  in the bootup process.

	  One use is for the kexec on panic case where the recovery kernel
	  must live at a different physical address than the primary
	  kernel.

948 949 950
config PAGE_OFFSET
	hex
	default "0xc000000000000000"
S
Stephen Rothwell 已提交
951 952
config KERNEL_START
	hex
S
Stephen Rothwell 已提交
953
	default "0xc000000000000000"
954 955 956
config PHYSICAL_START
	hex
	default "0x00000000"
S
Stephen Rothwell 已提交
957 958
endif

959 960 961 962 963 964
source "net/Kconfig"

source "drivers/Kconfig"

source "fs/Kconfig"

965 966
source "arch/powerpc/sysdev/qe_lib/Kconfig"

967 968 969 970 971 972 973 974 975 976 977 978
source "lib/Kconfig"

source "arch/powerpc/Kconfig.debug"

source "security/Kconfig"

config KEYS_COMPAT
	bool
	depends on COMPAT && KEYS
	default y

source "crypto/Kconfig"
979 980 981 982

config PPC_CLOCK
	bool
	default n
983
	select HAVE_CLK
984 985 986 987

config PPC_LIB_RHEAP
	bool

988
source "arch/powerpc/kvm/Kconfig"