Kconfig 22.0 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
config HAVE_SETUP_PER_CPU_AREA
46 47
	def_bool PPC64

48 49 50 51
config IRQ_PER_CPU
	bool
	default y

52 53 54 55
config STACKTRACE_SUPPORT
	bool
	default y

A
Arnd Bergmann 已提交
56 57 58
config HAVE_LATENCYTOP_SUPPORT
	def_bool y

59 60 61 62 63 64 65 66 67
config TRACE_IRQFLAGS_SUPPORT
	bool
	depends on PPC64
	default y

config LOCKDEP_SUPPORT
	bool
	default y

68 69 70 71 72 73 74
config RWSEM_GENERIC_SPINLOCK
	bool

config RWSEM_XCHGADD_ALGORITHM
	bool
	default y

N
Nick Piggin 已提交
75 76 77 78 79
config GENERIC_LOCKBREAK
	bool
	default y
	depends on SMP && PREEMPT

80 81
config ARCH_HAS_ILOG2_U32
	bool
82
	default y
83 84 85

config ARCH_HAS_ILOG2_U64
	bool
86
	default y if 64BIT
87

88 89 90 91
config GENERIC_HWEIGHT
	bool
	default y

92 93 94 95
config GENERIC_CALIBRATE_DELAY
	bool
	default y

96 97 98 99
config GENERIC_FIND_NEXT_BIT
	bool
	default y

100 101 102 103 104
config GENERIC_GPIO
	bool
	help
	  Generic GPIO API support

S
Stephen Rothwell 已提交
105 106 107
config ARCH_NO_VIRT_TO_BUS
	def_bool PPC64

108 109 110
config PPC
	bool
	default y
S
Steven Rostedt 已提交
111 112
	select HAVE_FTRACE_MCOUNT_RECORD
	select HAVE_DYNAMIC_FTRACE
113
	select HAVE_FUNCTION_TRACER
M
Michael Buesch 已提交
114
	select ARCH_WANT_OPTIONAL_GPIOLIB
S
Sam Ravnborg 已提交
115
	select HAVE_IDE
B
Benjamin Herrenschmidt 已提交
116
	select HAVE_IOREMAP_PROT
117
	select HAVE_EFFICIENT_UNALIGNED_ACCESS
M
Mathieu Desnoyers 已提交
118
	select HAVE_KPROBES
119
	select HAVE_ARCH_KGDB
120
	select HAVE_KRETPROBES
121
	select HAVE_ARCH_TRACEHOOK
122
	select HAVE_LMB
123
	select HAVE_DMA_ATTRS if PPC64
124
	select USE_GENERIC_SMP_HELPERS if SMP
S
Steven Rostedt 已提交
125
	select HAVE_OPROFILE
126
	select HAVE_SYSCALL_WRAPPERS if PPC64
127 128 129

config EARLY_PRINTK
	bool
130
	default y
131 132 133 134

config COMPAT
	bool
	default y if PPC64
135
	select COMPAT_BINFMT_ELF
136 137 138 139 140 141 142 143 144 145 146

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

147
config SCHED_OMIT_FRAME_POINTER
148 149 150 151 152
	bool
	default y

config ARCH_MAY_HAVE_PC_FDC
	bool
153
	default !PPC_PSERIES || PCI
154

155 156 157
config PPC_OF
	def_bool y

158 159 160
config OF
	def_bool y

161 162 163 164 165 166 167 168 169
config PPC_UDBG_16550
	bool
	default n

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

170 171 172 173
config AUDIT_ARCH
	bool
	default y

174 175 176 177 178
config GENERIC_BUG
	bool
	default y
	depends on BUG

179
config SYS_SUPPORTS_APM_EMULATION
K
Kumar Gala 已提交
180
	default y if PMAC_APM_EMU
181 182
	bool

183 184 185 186 187 188
config DEFAULT_UIMAGE
	bool
	help
	  Used to allow a board to specify it wants a uImage built by default
	default n

189 190 191
config REDBOOT
	bool

192
config HIBERNATE_32
193
	bool
194 195 196 197 198 199 200 201 202 203 204
	depends on (PPC_PMAC && !SMP) || BROKEN
	default y

config HIBERNATE_64
	bool
	depends on BROKEN || (PPC_PMAC64 && EXPERIMENTAL)
	default y

config ARCH_HIBERNATION_POSSIBLE
	bool
	depends on (PPC64 && HIBERNATE_64) || (PPC32 && HIBERNATE_32)
205 206
	default y

J
Johannes Berg 已提交
207 208
config ARCH_SUSPEND_POSSIBLE
	def_bool y
209
	depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx
J
Johannes Berg 已提交
210

211 212 213 214 215 216 217 218 219 220 221 222 223
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

224 225
config PPC_OF_PLATFORM_PCI
	bool
226
	depends on PCI
227 228 229
	depends on PPC64 # not supported on 32 bits yet
	default n

230 231
source "init/Kconfig"

232 233
source "kernel/Kconfig.freezer"

234
source "arch/powerpc/sysdev/Kconfig"
235
source "arch/powerpc/platforms/Kconfig"
236 237 238 239 240 241 242

menu "Kernel options"

config HIGHMEM
	bool "High memory support"
	depends on PPC32

243
source kernel/time/Kconfig
244 245 246 247
source kernel/Kconfig.hz
source kernel/Kconfig.preempt
source "fs/Kconfig.binfmt"

248 249 250 251 252
config HUGETLB_PAGE_SIZE_VARIABLE
	bool
	depends on HUGETLB_PAGE
	default y

253 254
config MATH_EMULATION
	bool "Math emulation"
255
	depends on 4xx || 8xx || E200 || PPC_MPC832x || E500
256 257 258 259 260 261 262 263
	---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.

264 265 266 267 268 269 270 271 272 273 274
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.

275
config IOMMU_VMERGE
276 277 278
	bool "Enable IOMMU virtual merging"
	depends on PPC64
	default y
279 280 281 282 283
	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
284 285 286
	  from *_map_sg().

	  Most drivers don't have this problem; it is safe to say Y here.
287

288 289 290
config IOMMU_HELPER
	def_bool PPC64

B
Becky Bruce 已提交
291 292 293 294
config PPC_NEED_DMA_SYNC_OPS
	def_bool y
	depends on NOT_COHERENT_CACHE

295 296 297 298 299 300 301 302 303
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.

304 305 306
config ARCH_ENABLE_MEMORY_HOTPLUG
	def_bool y

307 308 309
config ARCH_HAS_WALK_MEMORY
	def_bool y

310 311 312
config ARCH_ENABLE_MEMORY_HOTREMOVE
	def_bool y

313 314
config KEXEC
	bool "kexec system call (EXPERIMENTAL)"
315
	depends on (PPC_PRPMC2800 || PPC_MULTIPLATFORM) && EXPERIMENTAL
316 317 318
	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
319
	  but it is independent of the system firmware.   And like a reboot
320 321
	  you can start any kernel with it, not just Linux.

322
	  The name comes from the similarity to the exec system call.
323 324 325 326 327 328 329

	  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.

330
config CRASH_DUMP
331
	bool "Build a kdump crash kernel"
332 333
	depends on PPC64 || 6xx
	select RELOCATABLE if PPC64
334 335
	help
	  Build a kernel suitable for use as a kdump capture kernel.
336 337
	  The same kernel binary can be used as production kernel and dump
	  capture kernel.
338

339 340 341 342 343 344 345 346 347 348
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
	  hypervisor assistence.

	  If unsure, say "N"

349 350 351 352 353 354 355 356 357 358 359 360 361
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.

362 363 364 365 366
config NUMA
	bool "NUMA support"
	depends on PPC64
	default y if SMP && PPC_PSERIES

Y
Yasunori Goto 已提交
367 368 369 370 371
config NODES_SHIFT
	int
	default "4"
	depends on NEED_MULTIPLE_NODES

372 373 374 375 376
config ARCH_SELECT_MEMORY_MODEL
	def_bool y
	depends on PPC64

config ARCH_FLATMEM_ENABLE
377 378
	def_bool y
	depends on (PPC64 && !NUMA) || PPC32
379

380
config ARCH_SPARSEMEM_ENABLE
381
	def_bool y
382
	depends on PPC64
A
Andy Whitcroft 已提交
383
	select SPARSEMEM_VMEMMAP_ENABLE
384

385
config ARCH_SPARSEMEM_DEFAULT
386
	def_bool y
387
	depends on (SMP && PPC_PSERIES) || PPC_PS3
388

389
config ARCH_POPULATES_NODE_MAP
390
	def_bool y
391 392

source "mm/Kconfig"
393

M
Mike Kravetz 已提交
394 395 396 397
config ARCH_MEMORY_PROBE
	def_bool y
	depends on MEMORY_HOTPLUG

398 399 400 401 402 403 404 405 406
# 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

407 408 409 410 411
config PPC_HAS_HASH_64K
	bool
	depends on PPC64
	default n

412 413 414
choice
	prompt "Page size"
	default PPC_4K_PAGES
415
	help
416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447
	  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
	bool "64k page size" if 44x || PPC_STD_MMU_64
	select PPC_HAS_HASH_64K if PPC_STD_MMU_64

endchoice
448

449 450
config FORCE_MAX_ZONEORDER
	int "Maximum zone order"
451 452 453 454 455 456 457 458
	range 9 64 if PPC_STD_MMU_64 && PPC_64K_PAGES
	default "9" if PPC_STD_MMU_64 && PPC_64K_PAGES
	range 13 64 if PPC_STD_MMU_64 && !PPC_64K_PAGES
	default "13" if PPC_STD_MMU_64 && !PPC_64K_PAGES
	range 9 64 if PPC_STD_MMU_32 && PPC_16K_PAGES
	default "9" if PPC_STD_MMU_32 && PPC_16K_PAGES
	range 7 64 if PPC_STD_MMU_32 && PPC_64K_PAGES
	default "7" if PPC_STD_MMU_32 && PPC_64K_PAGES
J
Johannes Berg 已提交
459
	range 11 64
460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475
	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.

476 477
config PPC_SUBPAGE_PROT
	bool "Support setting protections for 4k subpages"
478
	depends on PPC_STD_MMU_64 && PPC_64K_PAGES
479 480 481 482 483
	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.

484 485 486 487 488 489 490 491 492
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
493 494
	bool "Support for device tree in /proc"
	depends on PROC_FS
495 496 497
	help
	  This option adds a device-tree directory under /proc which contains
	  an image of the device tree that the kernel copies from Open
498
	  Firmware or other boot firmware. If unsure, say Y here.
499 500 501 502 503 504 505 506 507 508 509 510 511 512

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.

513 514 515 516 517 518 519 520 521 522 523 524 525
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

526
if !44x || BROKEN
527 528 529 530
config ARCH_WANTS_FREEZER_CONTROL
	def_bool y
	depends on ADB_PMU

531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554
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
555
	default !PPC_ISERIES || PCI
556 557 558 559 560 561

menu "Bus options"

config ISA
	bool "Support for ISA-bus hardware"
	depends on PPC_PREP || PPC_CHRP
562
	select PPC_I8259
563 564 565 566 567 568 569
	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.

570 571 572 573
config ZONE_DMA
	bool
	default y

574 575 576 577 578
config GENERIC_ISA_DMA
	bool
	depends on PPC64 || POWER4 || 6xx && !CPM2
	default y

579 580 581
config PPC_INDIRECT_PCI
	bool
	depends on PCI
582
	default y if 40x || 44x
583 584
	default n

585 586 587 588 589 590
config EISA
	bool

config SBUS
	bool

591 592 593
config FSL_SOC
	bool

594 595 596 597
config FSL_PCI
 	bool
	select PPC_INDIRECT_PCI

598 599 600
config 4xx_SOC
	bool

601 602 603 604 605
config FSL_LBC
	bool
	help
	  Freescale Localbus support

606 607 608 609 610 611
config FSL_GTM
	bool
	depends on PPC_83xx || QUICC_ENGINE || CPM2
	help
	  Freescale General-purpose Timers support

612 613 614 615
# Yes MCA RS/6000s exist but Linux-PPC does not currently support any
config MCA
	bool

J
John Rigby 已提交
616 617 618 619 620 621
# 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

622
config PCI
J
John Rigby 已提交
623 624
	bool "PCI support" if PPC_PCI_CHOICE
	default y if !40x && !CPM2 && !8xx && !PPC_83xx \
625
		&& !PPC_85xx && !PPC_86xx
626
	default PCI_PERMEDIA if !4xx && !CPM2 && !8xx
627
	default PCI_QSPAN if !4xx && !CPM2 && 8xx
628
	select ARCH_SUPPORTS_MSI
629 630 631 632 633 634 635
	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
636 637 638 639
	def_bool PCI

config PCI_SYSCALL
	def_bool PCI
640 641 642 643

config PCI_QSPAN
	bool "QSpan PCI"
	depends on !4xx && !CPM2 && 8xx
644
	select PPC_I8259
645 646 647 648 649 650 651
	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
652
	select PPC_INDIRECT_PCI
653 654 655
	default y

config 8260_PCI9
656
	bool "Enable workaround for MPC826x erratum PCI 9"
657
	depends on PCI_8260 && !8272
658 659 660
	default y

choice
661
	prompt "IDMA channel for PCI 9 workaround"
662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677
	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

678 679
source "drivers/pci/pcie/Kconfig"

680 681 682 683 684 685
source "drivers/pci/Kconfig"

source "drivers/pcmcia/Kconfig"

source "drivers/pci/hotplug/Kconfig"

686 687 688 689 690 691 692 693 694 695 696 697 698
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"

699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732
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"

733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764
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"

765 766 767 768 769
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
770 771 772
	  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.
773 774 775 776 777

	  Say N here unless you know what you are doing.

config KERNEL_START
	hex "Virtual address of kernel base" if KERNEL_START_BOOL
778 779
	default PAGE_OFFSET if PAGE_OFFSET_BOOL
	default "0xc2000000" if CRASH_DUMP
780 781
	default "0xc0000000"

782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802
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
	default "0x10000000" if FSL_BOOKE
	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.

803 804 805 806 807 808 809 810 811 812 813 814
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
815 816
	default "0x80000000" if PPC_PREP || PPC_8xx
	default "0xc0000000"
817 818 819 820 821 822

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
M
Matt LaPlante 已提交
823
	  of the consistent memory pool.  This pool of virtual
824 825 826 827
	  memory is used to make consistent memory allocations.

config CONSISTENT_START
	hex "Base virtual address of consistent memory pool" if CONSISTENT_START_BOOL
S
Scott Wood 已提交
828
	default "0xfd000000" if (NOT_COHERENT_CACHE && 8xx)
829 830 831 832 833 834
	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
M
Matt LaPlante 已提交
835
	  This option allows you to set the size of the
836 837 838 839 840 841 842 843 844 845 846 847
	  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 PIN_TLB
	bool "Pinned Kernel TLBs (860 ONLY)"
	depends on ADVANCED_OPTIONS && 8xx
endmenu

S
Stephen Rothwell 已提交
848
if PPC64
849 850 851 852 853 854 855 856 857 858 859 860 861
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.

862 863 864
config PAGE_OFFSET
	hex
	default "0xc000000000000000"
S
Stephen Rothwell 已提交
865 866
config KERNEL_START
	hex
S
Stephen Rothwell 已提交
867
	default "0xc000000000000000"
868 869 870
config PHYSICAL_START
	hex
	default "0x00000000"
S
Stephen Rothwell 已提交
871 872
endif

873 874 875 876 877 878 879 880 881 882
source "net/Kconfig"

source "drivers/Kconfig"

source "fs/Kconfig"

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

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

883 884
source "arch/powerpc/sysdev/qe_lib/Kconfig"

885 886 887 888 889 890 891 892 893 894 895 896
source "lib/Kconfig"

source "arch/powerpc/Kconfig.debug"

source "security/Kconfig"

config KEYS_COMPAT
	bool
	depends on COMPAT && KEYS
	default y

source "crypto/Kconfig"
897 898 899 900

config PPC_CLOCK
	bool
	default n
901
	select HAVE_CLK
902 903 904 905

config PPC_LIB_RHEAP
	bool

906
source "arch/powerpc/kvm/Kconfig"