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Paul Mackerras14cf11a2005-09-26 16:04:21 +10001# For a description of the syntax of this configuration file,
2# see Documentation/kbuild/kconfig-language.txt.
3#
4
5mainmenu "Linux/PowerPC Kernel Configuration"
6
Arnd Bergmanna0ae9c72007-06-13 02:30:17 +10007source "arch/powerpc/platforms/Kconfig.cputype"
Johannes Berg17e638b2007-03-19 11:53:53 +01008
Paul Mackerras14cf11a2005-09-26 16:04:21 +10009config PPC32
10 bool
11 default y if !PPC64
12
13config 64BIT
14 bool
15 default y if PPC64
16
Stephen Rothwell2578bfa2007-09-21 10:16:20 +100017config WORD_SIZE
18 int
19 default 64 if PPC64
20 default 32 if !PPC64
21
Paul Mackerras14cf11a2005-09-26 16:04:21 +100022config PPC_MERGE
23 def_bool y
24
25config MMU
26 bool
27 default y
28
Tony Breedsaa3be5f2007-09-21 13:26:02 +100029config GENERIC_CMOS_UPDATE
30 def_bool y
31
Tony Breeds4a4cfe32007-09-22 07:35:52 +100032config GENERIC_TIME
33 def_bool y
34
35config GENERIC_TIME_VSYSCALL
36 def_bool y
37
Tony Breedsd831d0b2007-09-21 13:26:03 +100038config GENERIC_CLOCKEVENTS
39 def_bool y
40
Paul Mackerras14cf11a2005-09-26 16:04:21 +100041config GENERIC_HARDIRQS
42 bool
43 default y
44
Ingo Molnar0d7012a2006-06-29 02:24:43 -070045config IRQ_PER_CPU
46 bool
47 default y
48
Paul Mackerras14cf11a2005-09-26 16:04:21 +100049config RWSEM_GENERIC_SPINLOCK
50 bool
51
52config RWSEM_XCHGADD_ALGORITHM
53 bool
54 default y
55
David Howellsf0d1b0b2006-12-08 02:37:49 -080056config ARCH_HAS_ILOG2_U32
57 bool
David Howellsef55d532006-12-08 02:37:53 -080058 default y
David Howellsf0d1b0b2006-12-08 02:37:49 -080059
60config ARCH_HAS_ILOG2_U64
61 bool
David Howellsef55d532006-12-08 02:37:53 -080062 default y if 64BIT
David Howellsf0d1b0b2006-12-08 02:37:49 -080063
Akinobu Mitae779b2f2006-03-26 01:39:33 -080064config GENERIC_HWEIGHT
65 bool
66 default y
67
Paul Mackerras14cf11a2005-09-26 16:04:21 +100068config GENERIC_CALIBRATE_DELAY
69 bool
70 default y
71
Jon Mason0a9cb462006-05-19 15:35:32 -050072config GENERIC_FIND_NEXT_BIT
73 bool
74 default y
75
Stephen Rothwellf057eac2007-07-15 23:40:05 -070076config ARCH_NO_VIRT_TO_BUS
77 def_bool PPC64
78
Paul Mackerras14cf11a2005-09-26 16:04:21 +100079config PPC
80 bool
81 default y
82
83config EARLY_PRINTK
84 bool
Benjamin Herrenschmidt51d30822005-11-23 17:57:25 +110085 default y
Paul Mackerras14cf11a2005-09-26 16:04:21 +100086
87config COMPAT
88 bool
89 default y if PPC64
90
91config SYSVIPC_COMPAT
92 bool
93 depends on COMPAT && SYSVIPC
94 default y
95
96# All PPC32s use generic nvram driver through ppc_md
97config GENERIC_NVRAM
98 bool
99 default y if PPC32
100
101config SCHED_NO_NO_OMIT_FRAME_POINTER
102 bool
103 default y
104
105config ARCH_MAY_HAVE_PC_FDC
106 bool
Stephen Rothwellbed59272007-03-04 17:04:44 +1100107 default !PPC_PSERIES || PCI
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000108
Kumar Gala08264cb2006-01-10 21:43:56 -0600109config PPC_OF
110 def_bool y
111
Stephen Rothwell97e873e2007-05-01 16:26:07 +1000112config OF
113 def_bool y
114
Kumar Gala08264cb2006-01-10 21:43:56 -0600115config PPC_UDBG_16550
116 bool
117 default n
118
Kumar Gala08264cb2006-01-10 21:43:56 -0600119config GENERIC_TBSYNC
120 bool
121 default y if PPC32 && SMP
122 default n
123
Al Viroe65e1fc2006-09-12 03:04:40 -0400124config AUDIT_ARCH
125 bool
126 default y
127
Jeremy Fitzhardinge73c9cea2006-12-08 03:30:41 -0800128config GENERIC_BUG
129 bool
130 default y
131 depends on BUG
132
Johannes Bergb3028872007-03-20 05:18:02 +1100133config SYS_SUPPORTS_APM_EMULATION
Kumar Gala58da10b2007-05-23 09:51:46 -0500134 default y if PMAC_APM_EMU
Johannes Bergb3028872007-03-20 05:18:02 +1100135 bool
136
Kumar Galaf4fc4a52006-01-16 10:53:22 -0600137config DEFAULT_UIMAGE
138 bool
139 help
140 Used to allow a board to specify it wants a uImage built by default
141 default n
142
Johannes Berg543b9fd2007-05-03 22:31:38 +1000143config PPC64_SWSUSP
144 bool
145 depends on PPC64 && (BROKEN || (PPC_PMAC64 && EXPERIMENTAL))
146 default y
147
Benjamin Herrenschmidt4c75a6f2006-11-11 17:24:53 +1100148config PPC_DCR_NATIVE
149 bool
150 default n
151
152config PPC_DCR_MMIO
153 bool
154 default n
155
156config PPC_DCR
157 bool
158 depends on PPC_DCR_NATIVE || PPC_DCR_MMIO
159 default y
160
Benjamin Herrenschmidt4c9d2802006-11-11 17:25:08 +1100161config PPC_OF_PLATFORM_PCI
162 bool
163 depends on PPC64 # not supported on 32 bits yet
164 default n
165
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000166source "init/Kconfig"
167
Kumar Gala4330f5d2007-03-16 09:32:17 -0500168source "arch/powerpc/platforms/Kconfig"
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000169
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000170menu "Kernel options"
171
172config HIGHMEM
173 bool "High memory support"
174 depends on PPC32
175
Tony Breeds1ad74992007-09-21 13:26:03 +1000176source kernel/time/Kconfig
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000177source kernel/Kconfig.hz
178source kernel/Kconfig.preempt
179source "fs/Kconfig.binfmt"
180
181# We optimistically allocate largepages from the VM, so make the limit
182# large enough (16MB). This badly named config option is actually
183# max order + 1
184config FORCE_MAX_ZONEORDER
185 int
186 depends on PPC64
Mike Kravetz02864862005-11-07 13:48:59 -0800187 default "9" if PPC_64K_PAGES
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000188 default "13"
189
190config MATH_EMULATION
191 bool "Math emulation"
Kumar Gala4d527192007-01-26 00:23:34 -0600192 depends on 4xx || 8xx || E200 || PPC_MPC832x || E500
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000193 ---help---
194 Some PowerPC chips designed for embedded applications do not have
195 a floating-point unit and therefore do not implement the
196 floating-point instructions in the PowerPC instruction set. If you
197 say Y here, the kernel will include code to emulate a floating-point
198 unit, which will allow programs that use floating-point
199 instructions to run.
200
Scott Wood5dd57a12007-09-18 15:29:35 -0500201config 8XX_MINIMAL_FPEMU
202 bool "Minimal math emulation for 8xx"
203 depends on 8xx && !MATH_EMULATION
204 help
205 Older arch/ppc kernels still emulated a few floating point
206 instructions such as load and store, even when full math
207 emulation is disabled. Say "Y" here if you want to preserve
208 this behavior.
209
210 It is recommended that you build a soft-float userspace instead.
211
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000212config IOMMU_VMERGE
Linas Vepstas768cc2d2007-07-18 02:09:35 +1000213 bool "Enable IOMMU virtual merging"
214 depends on PPC64
215 default y
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000216 help
217 Cause IO segments sent to a device for DMA to be merged virtually
218 by the IOMMU when they happen to have been allocated contiguously.
219 This doesn't add pressure to the IOMMU allocator. However, some
220 drivers don't support getting large merged segments coming back
Linas Vepstas768cc2d2007-07-18 02:09:35 +1000221 from *_map_sg().
222
223 Most drivers don't have this problem; it is safe to say Y here.
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000224
225config HOTPLUG_CPU
226 bool "Support for enabling/disabling CPUs"
227 depends on SMP && HOTPLUG && EXPERIMENTAL && (PPC_PSERIES || PPC_PMAC)
228 ---help---
229 Say Y here to be able to disable and re-enable individual
230 CPUs at runtime on SMP machines.
231
232 Say N if you are unsure.
233
Yasunori Gotocc576372006-06-29 02:24:27 -0700234config ARCH_ENABLE_MEMORY_HOTPLUG
235 def_bool y
236
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000237config KEXEC
238 bool "kexec system call (EXPERIMENTAL)"
Dale Farnsworthfd4ba7e2007-05-12 10:58:43 +1000239 depends on (PPC_PRPMC2800 || PPC_MULTIPLATFORM) && EXPERIMENTAL
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000240 help
241 kexec is a system call that implements the ability to shutdown your
242 current kernel, and to start another kernel. It is like a reboot
Matt LaPlante1f1332f2006-06-29 01:32:47 -0400243 but it is independent of the system firmware. And like a reboot
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000244 you can start any kernel with it, not just Linux.
245
Matt LaPlante1f1332f2006-06-29 01:32:47 -0400246 The name comes from the similarity to the exec system call.
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000247
248 It is an ongoing process to be certain the hardware in a machine
249 is properly shutdown, so do not be surprised if this code does not
250 initially work for you. It may help to enable device hotplugging
251 support. As of this writing the exact hardware interface is
252 strongly in flux, so no good recommendation can be made.
253
Haren Mynenie8625d462006-01-14 13:48:25 -0800254config CRASH_DUMP
Michael Ellermancd9c99d2006-03-10 15:01:08 +1100255 bool "Build a kdump crash kernel (EXPERIMENTAL)"
Haren Mynenie8625d462006-01-14 13:48:25 -0800256 depends on PPC_MULTIPLATFORM && PPC64 && EXPERIMENTAL
257 help
258 Build a kernel suitable for use as a kdump capture kernel.
259 The kernel will be linked at a different address than normal, and
260 so can only be used for Kdump.
261
262 Don't change this unless you know what you are doing.
263
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000264config PPCBUG_NVRAM
265 bool "Enable reading PPCBUG NVRAM during boot" if PPLUS || LOPEC
266 default y if PPC_PREP
267
268config IRQ_ALL_CPUS
269 bool "Distribute interrupts on all CPUs by default"
270 depends on SMP && !MV64360
271 help
272 This option gives the kernel permission to distribute IRQs across
273 multiple CPUs. Saying N here will route all IRQs to the first
274 CPU. Generally saying Y is safe, although some problems have been
275 reported with SMP Power Macintoshes with this option enabled.
276
Andy Whitcroftffa27b62005-10-28 17:46:58 -0700277config NUMA
278 bool "NUMA support"
279 depends on PPC64
280 default y if SMP && PPC_PSERIES
281
Yasunori Gotoc80d79d2006-04-10 22:53:53 -0700282config NODES_SHIFT
283 int
284 default "4"
285 depends on NEED_MULTIPLE_NODES
286
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000287config ARCH_SELECT_MEMORY_MODEL
288 def_bool y
289 depends on PPC64
290
291config ARCH_FLATMEM_ENABLE
Andy Whitcroft9100b202005-11-29 19:20:55 +0000292 def_bool y
293 depends on (PPC64 && !NUMA) || PPC32
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000294
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000295config ARCH_SPARSEMEM_ENABLE
296 def_bool y
Andy Whitcroft9100b202005-11-29 19:20:55 +0000297 depends on PPC64
Anton Blanchard45fb6ce2005-11-11 14:22:35 +1100298
299config ARCH_SPARSEMEM_DEFAULT
300 def_bool y
Benjamin Herrenschmidt78bde532007-02-13 11:46:06 +1100301 depends on (SMP && PPC_PSERIES) || PPC_PS3
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000302
Mel Gormanc67c3cb2006-09-27 01:49:49 -0700303config ARCH_POPULATES_NODE_MAP
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000304 def_bool y
Mel Gormanc67c3cb2006-09-27 01:49:49 -0700305
306source "mm/Kconfig"
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000307
Mike Kravetz7e9191d2005-11-07 09:39:48 -0800308config ARCH_MEMORY_PROBE
309 def_bool y
310 depends on MEMORY_HOTPLUG
311
Andy Whitcroft75167952006-10-21 10:24:14 -0700312# Some NUMA nodes have memory ranges that span
313# other nodes. Even though a pfn is valid and
314# between a node's start and end pfns, it may not
315# reside on that node. See memmap_init_zone()
316# for details.
317config NODES_SPAN_OTHER_NODES
318 def_bool y
319 depends on NEED_MULTIPLE_NODES
320
Benjamin Herrenschmidt16c2d472007-05-08 16:27:28 +1000321config PPC_HAS_HASH_64K
322 bool
323 depends on PPC64
324 default n
325
Benjamin Herrenschmidt3c726f82005-11-07 11:06:55 +1100326config PPC_64K_PAGES
327 bool "64k page size"
Benjamin Herrenschmidt863c84b2005-11-07 00:57:58 -0800328 depends on PPC64
Benjamin Herrenschmidt16c2d472007-05-08 16:27:28 +1000329 select PPC_HAS_HASH_64K
Benjamin Herrenschmidt3c726f82005-11-07 11:06:55 +1100330 help
331 This option changes the kernel logical page size to 64k. On machines
Kumar Gala98750262007-04-12 18:01:34 -0500332 without processor support for 64k pages, the kernel will simulate
333 them by loading each individual 4k page on demand transparently,
334 while on hardware with such support, it will be used to map
335 normal application pages.
Benjamin Herrenschmidt3c726f82005-11-07 11:06:55 +1100336
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000337config SCHED_SMT
338 bool "SMT (Hyperthreading) scheduler support"
339 depends on PPC64 && SMP
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000340 help
341 SMT scheduler support improves the CPU scheduler's decision making
342 when dealing with POWER5 cpus at a cost of slightly increased
343 overhead in some places. If unsure say N here.
344
345config PROC_DEVICETREE
Paul Mackerras5f296752005-10-17 20:14:59 +1000346 bool "Support for device tree in /proc"
347 depends on PROC_FS
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000348 help
349 This option adds a device-tree directory under /proc which contains
350 an image of the device tree that the kernel copies from Open
Paul Mackerras5f296752005-10-17 20:14:59 +1000351 Firmware or other boot firmware. If unsure, say Y here.
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000352
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000353config CMDLINE_BOOL
354 bool "Default bootloader kernel arguments"
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000355
356config CMDLINE
357 string "Initial kernel command string"
358 depends on CMDLINE_BOOL
359 default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
360 help
361 On some platforms, there is currently no way for the boot loader to
362 pass arguments to the kernel. For these platforms, you can supply
363 some command-line options at build time by entering them here. In
364 most cases you will need to specify the root device here.
365
366if !44x || BROKEN
367source kernel/power/Kconfig
368endif
369
370config SECCOMP
371 bool "Enable seccomp to safely compute untrusted bytecode"
372 depends on PROC_FS
373 default y
374 help
375 This kernel feature is useful for number crunching applications
376 that may need to compute untrusted bytecode during their
377 execution. By using pipes or other transports made available to
378 the process as file descriptors supporting the read/write
379 syscalls, it's possible to isolate those applications in
380 their own address space using seccomp. Once seccomp is
381 enabled via /proc/<pid>/seccomp, it cannot be disabled
382 and the task is only allowed to execute a few safe syscalls
383 defined by each seccomp mode.
384
385 If unsure, say Y. Only embedded should say N here.
386
Scott Wood270429b2007-04-17 09:24:51 +1000387config WANT_DEVICE_TREE
388 bool
389 default n
390
391config DEVICE_TREE
392 string "Static device tree source file"
393 depends on WANT_DEVICE_TREE
394 help
395 This specifies the device tree source (.dts) file to be
396 compiled and included when building the bootwrapper. If a
397 relative filename is given, then it will be relative to
398 arch/powerpc/boot/dts. If you are not using the bootwrapper,
399 or do not need to build a dts into the bootwrapper, this
400 field is ignored.
401
402 For example, this is required when building a cuImage target
403 for an older U-Boot, which cannot pass a device tree itself.
404 Such a kernel will not work with a newer U-Boot that tries to
405 pass a device tree (unless you tell it not to). If your U-Boot
406 does not mention a device tree in "help bootm", then use the
407 cuImage target and specify a device tree here. Otherwise, use
408 the uImage target and leave this field blank.
409
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000410endmenu
411
412config ISA_DMA_API
413 bool
414 default y
415
416menu "Bus options"
417
418config ISA
419 bool "Support for ISA-bus hardware"
420 depends on PPC_PREP || PPC_CHRP
Paul Mackerrasf9bd1702005-10-26 16:47:42 +1000421 select PPC_I8259
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000422 help
423 Find out whether you have ISA slots on your motherboard. ISA is the
424 name of a bus system, i.e. the way the CPU talks to the other stuff
425 inside your box. If you have an Apple machine, say N here; if you
426 have an IBM RS/6000 or pSeries machine or a PReP machine, say Y. If
427 you have an embedded board, consult your board documentation.
428
Christoph Lameter5ac6da62007-02-10 01:43:14 -0800429config ZONE_DMA
430 bool
431 default y
432
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000433config GENERIC_ISA_DMA
434 bool
435 depends on PPC64 || POWER4 || 6xx && !CPM2
436 default y
437
Paul Mackerras25635c72005-10-26 16:36:55 +1000438config PPC_INDIRECT_PCI
439 bool
440 depends on PCI
Becky Bruce63dafe52006-01-14 16:57:39 -0600441 default y if 40x || 44x
Paul Mackerras25635c72005-10-26 16:36:55 +1000442 default n
443
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000444config EISA
445 bool
446
447config SBUS
448 bool
449
Kumar Gala08264cb2006-01-10 21:43:56 -0600450config FSL_SOC
451 bool
452
Roy Zang55c44992007-07-10 18:44:34 +0800453config FSL_PCI
454 bool
455 select PPC_INDIRECT_PCI
456
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000457# Yes MCA RS/6000s exist but Linux-PPC does not currently support any
458config MCA
459 bool
460
461config PCI
Jon Loeliger53158622006-08-09 10:37:28 -0500462 bool "PCI support" if 40x || CPM2 || PPC_83xx || PPC_85xx || PPC_86xx \
Stephen Rothwellbed59272007-03-04 17:04:44 +1100463 || PPC_MPC52xx || (EMBEDDED && (PPC_PSERIES || PPC_ISERIES)) \
Arnd Bergmannd3c7ffa2007-06-18 01:06:58 +0200464 || PPC_PS3
David Gibsonf21f49e2007-06-13 14:52:54 +1000465 default y if !40x && !CPM2 && !8xx && !PPC_83xx \
Jon Loeliger53158622006-08-09 10:37:28 -0500466 && !PPC_85xx && !PPC_86xx
David Gibsonf21f49e2007-06-13 14:52:54 +1000467 default PCI_PERMEDIA if !4xx && !CPM2 && !8xx
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000468 default PCI_QSPAN if !4xx && !CPM2 && 8xx
Michael Ellermandf87ef52007-05-08 12:58:34 +1000469 select ARCH_SUPPORTS_MSI
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000470 help
471 Find out whether your system includes a PCI bus. PCI is the name of
472 a bus system, i.e. the way the CPU talks to the other stuff inside
473 your box. If you say Y here, the kernel will include drivers and
474 infrastructure code to support PCI bus devices.
475
476config PCI_DOMAINS
Matthew Wilcox36e23592007-07-10 10:54:40 -0600477 def_bool PCI
478
479config PCI_SYSCALL
480 def_bool PCI
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000481
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000482config PCI_QSPAN
483 bool "QSpan PCI"
484 depends on !4xx && !CPM2 && 8xx
Paul Mackerrasf9bd1702005-10-26 16:47:42 +1000485 select PPC_I8259
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000486 help
487 Say Y here if you have a system based on a Motorola 8xx-series
488 embedded processor with a QSPAN PCI interface, otherwise say N.
489
490config PCI_8260
491 bool
492 depends on PCI && 8260
Paul Mackerras25635c72005-10-26 16:36:55 +1000493 select PPC_INDIRECT_PCI
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000494 default y
495
496config 8260_PCI9
Andrew Morton4a3ecc62006-06-01 20:36:04 -0700497 bool "Enable workaround for MPC826x erratum PCI 9"
Scott Woode00c5492007-09-14 15:41:56 -0500498 depends on PCI_8260 && !8272
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000499 default y
500
501choice
Andrew Morton4a3ecc62006-06-01 20:36:04 -0700502 prompt "IDMA channel for PCI 9 workaround"
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000503 depends on 8260_PCI9
504
505config 8260_PCI9_IDMA1
506 bool "IDMA1"
507
508config 8260_PCI9_IDMA2
509 bool "IDMA2"
510
511config 8260_PCI9_IDMA3
512 bool "IDMA3"
513
514config 8260_PCI9_IDMA4
515 bool "IDMA4"
516
517endchoice
518
Jake Moilanenbb53bb32006-06-07 16:05:46 -0500519source "drivers/pci/pcie/Kconfig"
520
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000521source "drivers/pci/Kconfig"
522
523source "drivers/pcmcia/Kconfig"
524
525source "drivers/pci/hotplug/Kconfig"
526
527endmenu
528
529menu "Advanced setup"
530 depends on PPC32
531
532config ADVANCED_OPTIONS
533 bool "Prompt for advanced kernel configuration options"
534 help
535 This option will enable prompting for a variety of advanced kernel
536 configuration options. These options can cause the kernel to not
537 work if they are set incorrectly, but can be used to optimize certain
538 aspects of kernel memory management.
539
540 Unless you know what you are doing, say N here.
541
542comment "Default settings for advanced configuration options are used"
543 depends on !ADVANCED_OPTIONS
544
545config HIGHMEM_START_BOOL
546 bool "Set high memory pool address"
547 depends on ADVANCED_OPTIONS && HIGHMEM
548 help
549 This option allows you to set the base address of the kernel virtual
550 area used to map high memory pages. This can be useful in
551 optimizing the layout of kernel virtual memory.
552
553 Say N here unless you know what you are doing.
554
555config HIGHMEM_START
556 hex "Virtual start address of high memory pool" if HIGHMEM_START_BOOL
557 default "0xfe000000"
558
559config LOWMEM_SIZE_BOOL
560 bool "Set maximum low memory"
561 depends on ADVANCED_OPTIONS
562 help
563 This option allows you to set the maximum amount of memory which
564 will be used as "low memory", that is, memory which the kernel can
565 access directly, without having to set up a kernel virtual mapping.
566 This can be useful in optimizing the layout of kernel virtual
567 memory.
568
569 Say N here unless you know what you are doing.
570
571config LOWMEM_SIZE
572 hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
573 default "0x30000000"
574
575config KERNEL_START_BOOL
576 bool "Set custom kernel base address"
577 depends on ADVANCED_OPTIONS
578 help
579 This option allows you to set the kernel virtual address at which
580 the kernel will map low memory (the kernel image will be linked at
581 this address). This can be useful in optimizing the virtual memory
582 layout of the system.
583
584 Say N here unless you know what you are doing.
585
586config KERNEL_START
587 hex "Virtual address of kernel base" if KERNEL_START_BOOL
588 default "0xc0000000"
589
590config TASK_SIZE_BOOL
591 bool "Set custom user task size"
592 depends on ADVANCED_OPTIONS
593 help
594 This option allows you to set the amount of virtual address space
595 allocated to user tasks. This can be useful in optimizing the
596 virtual memory layout of the system.
597
598 Say N here unless you know what you are doing.
599
600config TASK_SIZE
601 hex "Size of user task space" if TASK_SIZE_BOOL
Kumar Gala4d9e55102007-10-11 13:40:21 -0500602 default "0x80000000" if PPC_PREP || PPC_8xx
603 default "0xc0000000"
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000604
605config CONSISTENT_START_BOOL
606 bool "Set custom consistent memory pool address"
607 depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
608 help
609 This option allows you to set the base virtual address
Matt LaPlante4b3f6862006-10-03 22:21:02 +0200610 of the consistent memory pool. This pool of virtual
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000611 memory is used to make consistent memory allocations.
612
613config CONSISTENT_START
614 hex "Base virtual address of consistent memory pool" if CONSISTENT_START_BOOL
Scott Woodccf0d682007-07-16 11:28:18 -0500615 default "0xfd000000" if (NOT_COHERENT_CACHE && 8xx)
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000616 default "0xff100000" if NOT_COHERENT_CACHE
617
618config CONSISTENT_SIZE_BOOL
619 bool "Set custom consistent memory pool size"
620 depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
621 help
Matt LaPlante4b3f6862006-10-03 22:21:02 +0200622 This option allows you to set the size of the
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000623 consistent memory pool. This pool of virtual memory
624 is used to make consistent memory allocations.
625
626config CONSISTENT_SIZE
627 hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
628 default "0x00200000" if NOT_COHERENT_CACHE
629
630config BOOT_LOAD_BOOL
631 bool "Set the boot link/load address"
632 depends on ADVANCED_OPTIONS && !PPC_MULTIPLATFORM
633 help
634 This option allows you to set the initial load address of the zImage
635 or zImage.initrd file. This can be useful if you are on a board
636 which has a small amount of memory.
637
638 Say N here unless you know what you are doing.
639
640config BOOT_LOAD
641 hex "Link/load address for booting" if BOOT_LOAD_BOOL
642 default "0x00400000" if 40x || 8xx || 8260
643 default "0x01000000" if 44x
644 default "0x00800000"
645
646config PIN_TLB
647 bool "Pinned Kernel TLBs (860 ONLY)"
648 depends on ADVANCED_OPTIONS && 8xx
649endmenu
650
Stephen Rothwellcabb5582005-09-30 16:16:52 +1000651if PPC64
652config KERNEL_START
653 hex
Stephen Rothwelleeb2d212005-09-30 17:24:15 +1000654 default "0xc000000000000000"
Stephen Rothwellcabb5582005-09-30 16:16:52 +1000655endif
656
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000657source "net/Kconfig"
658
659source "drivers/Kconfig"
660
661source "fs/Kconfig"
662
663# XXX source "arch/ppc/8xx_io/Kconfig"
664
665# XXX source "arch/ppc/8260_io/Kconfig"
666
Li Yang98658532006-10-03 23:10:46 -0500667source "arch/powerpc/sysdev/qe_lib/Kconfig"
668
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000669source "lib/Kconfig"
670
Prasanna S Panchamukhicd6b0762005-11-07 00:59:14 -0800671menu "Instrumentation Support"
Kumar Gala98750262007-04-12 18:01:34 -0500672 depends on EXPERIMENTAL
Prasanna S Panchamukhicd6b0762005-11-07 00:59:14 -0800673
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000674source "arch/powerpc/oprofile/Kconfig"
675
Prasanna S Panchamukhicd6b0762005-11-07 00:59:14 -0800676config KPROBES
Ananth N Mavinakayanahalli87a7def2007-07-17 04:03:54 -0700677 bool "Kprobes"
678 depends on !BOOKE && !4xx && KALLSYMS && MODULES
Prasanna S Panchamukhicd6b0762005-11-07 00:59:14 -0800679 help
680 Kprobes allows you to trap at almost any kernel address and
681 execute a callback function. register_kprobe() establishes
682 a probepoint and specifies the callback. Kprobes is useful
683 for kernel debugging, non-intrusive instrumentation and testing.
684 If in doubt, say "N".
685endmenu
686
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000687source "arch/powerpc/Kconfig.debug"
688
689source "security/Kconfig"
690
691config KEYS_COMPAT
692 bool
693 depends on COMPAT && KEYS
694 default y
695
696source "crypto/Kconfig"
Domen Puncer6f668282007-09-21 00:00:11 +1000697
698config PPC_CLOCK
699 bool
700 default n
Sylvain Munaut1088a202007-09-16 20:53:25 +1000701
702config PPC_LIB_RHEAP
703 bool
704