blob: 0e4617104f8caa29710f01fd9a0e5b1e2785e969 [file] [log] [blame]
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
7config PPC64
8 bool "64-bit kernel"
9 default n
10 help
11 This option selects whether a 32-bit or a 64-bit kernel
12 will be built.
13
14config PPC32
15 bool
16 default y if !PPC64
17
18config 64BIT
19 bool
20 default y if PPC64
21
22config PPC_MERGE
23 def_bool y
24
25config MMU
26 bool
27 default y
28
29config UID16
30 bool
31
32config GENERIC_HARDIRQS
33 bool
34 default y
35
36config RWSEM_GENERIC_SPINLOCK
37 bool
38
39config RWSEM_XCHGADD_ALGORITHM
40 bool
41 default y
42
43config GENERIC_CALIBRATE_DELAY
44 bool
45 default y
46
47config PPC
48 bool
49 default y
50
51config EARLY_PRINTK
52 bool
Benjamin Herrenschmidt51d30822005-11-23 17:57:25 +110053 default y
Paul Mackerras14cf11a2005-09-26 16:04:21 +100054
55config COMPAT
56 bool
57 default y if PPC64
58
59config SYSVIPC_COMPAT
60 bool
61 depends on COMPAT && SYSVIPC
62 default y
63
64# All PPC32s use generic nvram driver through ppc_md
65config GENERIC_NVRAM
66 bool
67 default y if PPC32
68
69config SCHED_NO_NO_OMIT_FRAME_POINTER
70 bool
71 default y
72
73config ARCH_MAY_HAVE_PC_FDC
74 bool
75 default y
76
77menu "Processor support"
78choice
79 prompt "Processor Type"
80 depends on PPC32
81 default 6xx
82
83config 6xx
84 bool "6xx/7xx/74xx"
85 select PPC_FPU
86 help
87 There are four families of PowerPC chips supported. The more common
88 types (601, 603, 604, 740, 750, 7400), the Motorola embedded
89 versions (821, 823, 850, 855, 860, 52xx, 82xx, 83xx), the AMCC
90 embedded versions (403 and 405) and the high end 64 bit Power
91 processors (POWER 3, POWER4, and IBM PPC970 also known as G5).
92
93 Unless you are building a kernel for one of the embedded processor
94 systems, 64 bit IBM RS/6000 or an Apple G5, choose 6xx.
95 Note that the kernel runs in 32-bit mode even on 64-bit chips.
96
97config PPC_52xx
98 bool "Freescale 52xx"
99
100config PPC_82xx
101 bool "Freescale 82xx"
102
103config PPC_83xx
104 bool "Freescale 83xx"
105
106config 40x
107 bool "AMCC 40x"
108
109config 44x
110 bool "AMCC 44x"
111
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000112config 8xx
113 bool "Freescale 8xx"
114
115config E200
116 bool "Freescale e200"
117
118config E500
119 bool "Freescale e500"
120endchoice
121
122config POWER4_ONLY
123 bool "Optimize for POWER4"
Paul Mackerras187a0062005-10-06 12:49:05 +1000124 depends on PPC64
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000125 default n
126 ---help---
127 Cause the compiler to optimize for POWER4/POWER5/PPC970 processors.
128 The resulting binary will not work on POWER3 or RS64 processors
129 when compiled with binutils 2.15 or later.
130
131config POWER3
132 bool
Paul Mackerras187a0062005-10-06 12:49:05 +1000133 depends on PPC64
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000134 default y if !POWER4_ONLY
135
136config POWER4
Paul Mackerras187a0062005-10-06 12:49:05 +1000137 depends on PPC64
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000138 def_bool y
139
140config PPC_FPU
Paul Mackerras187a0062005-10-06 12:49:05 +1000141 bool
142 default y if PPC64
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000143
144config BOOKE
145 bool
146 depends on E200 || E500
147 default y
148
149config FSL_BOOKE
150 bool
151 depends on E200 || E500
152 default y
153
154config PTE_64BIT
155 bool
156 depends on 44x || E500
157 default y if 44x
158 default y if E500 && PHYS_64BIT
159
160config PHYS_64BIT
161 bool 'Large physical address support' if E500
162 depends on 44x || E500
163 default y if 44x
164 ---help---
165 This option enables kernel support for larger than 32-bit physical
166 addresses. This features is not be available on all e500 cores.
167
168 If in doubt, say N here.
169
170config ALTIVEC
171 bool "AltiVec Support"
172 depends on 6xx || POWER4
173 ---help---
174 This option enables kernel support for the Altivec extensions to the
175 PowerPC processor. The kernel currently supports saving and restoring
176 altivec registers, and turning on the 'altivec enable' bit so user
177 processes can execute altivec instructions.
178
179 This option is only usefully if you have a processor that supports
180 altivec (G4, otherwise known as 74xx series), but does not have
181 any affect on a non-altivec cpu (it does, however add code to the
182 kernel).
183
184 If in doubt, say Y here.
185
186config SPE
187 bool "SPE Support"
188 depends on E200 || E500
189 ---help---
190 This option enables kernel support for the Signal Processing
191 Extensions (SPE) to the PowerPC processor. The kernel currently
192 supports saving and restoring SPE registers, and turning on the
193 'spe enable' bit so user processes can execute SPE instructions.
194
195 This option is only useful if you have a processor that supports
196 SPE (e500, otherwise known as 85xx series), but does not have any
197 effect on a non-spe cpu (it does, however add code to the kernel).
198
199 If in doubt, say Y here.
200
201config PPC_STD_MMU
202 bool
203 depends on 6xx || POWER3 || POWER4 || PPC64
204 default y
205
206config PPC_STD_MMU_32
207 def_bool y
208 depends on PPC_STD_MMU && PPC32
209
210config SMP
211 depends on PPC_STD_MMU
212 bool "Symmetric multi-processing support"
213 ---help---
214 This enables support for systems with more than one CPU. If you have
215 a system with only one CPU, say N. If you have a system with more
216 than one CPU, say Y. Note that the kernel does not currently
217 support SMP machines with 603/603e/603ev or PPC750 ("G3") processors
218 since they have inadequate hardware support for multiprocessor
219 operation.
220
221 If you say N here, the kernel will run on single and multiprocessor
222 machines, but will use only one CPU of a multiprocessor machine. If
223 you say Y here, the kernel will run on single-processor machines.
224 On a single-processor machine, the kernel will run faster if you say
225 N here.
226
227 If you don't know what to do here, say N.
228
229config NR_CPUS
Olaf Heringe8a167a2005-12-01 21:10:10 +0100230 int "Maximum number of CPUs (2-128)"
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000231 range 2 128
232 depends on SMP
233 default "32" if PPC64
234 default "4"
235
236config NOT_COHERENT_CACHE
237 bool
238 depends on 4xx || 8xx || E200
239 default y
240endmenu
241
242source "init/Kconfig"
243
244menu "Platform support"
245 depends on PPC64 || 6xx
246
247choice
248 prompt "Machine type"
249 default PPC_MULTIPLATFORM
250
251config PPC_MULTIPLATFORM
252 bool "Generic desktop/server/laptop"
253 help
254 Select this option if configuring for an IBM pSeries or
255 RS/6000 machine, an Apple machine, or a PReP, CHRP,
256 Maple or Cell-based machine.
257
258config PPC_ISERIES
259 bool "IBM Legacy iSeries"
260 depends on PPC64
261
262config EMBEDDED6xx
263 bool "Embedded 6xx/7xx/7xxx-based board"
Paul Mackerras5be396b2005-11-14 17:31:55 +1100264 depends on PPC32 && BROKEN
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000265
266config APUS
267 bool "Amiga-APUS"
268 depends on PPC32 && BROKEN
269 help
270 Select APUS if configuring for a PowerUP Amiga.
271 More information is available at:
272 <http://linux-apus.sourceforge.net/>.
273endchoice
274
275config PPC_PSERIES
276 depends on PPC_MULTIPLATFORM && PPC64
277 bool " IBM pSeries & new (POWER5-based) iSeries"
Paul Mackerrasf9bd1702005-10-26 16:47:42 +1000278 select PPC_I8259
Paul Mackerras033ef332005-10-26 17:05:24 +1000279 select PPC_RTAS
280 select RTAS_ERROR_LOGGING
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000281 default y
282
283config PPC_CHRP
284 bool " Common Hardware Reference Platform (CHRP) based machines"
285 depends on PPC_MULTIPLATFORM && PPC32
Paul Mackerrasf9bd1702005-10-26 16:47:42 +1000286 select PPC_I8259
Paul Mackerras25635c72005-10-26 16:36:55 +1000287 select PPC_INDIRECT_PCI
Paul Mackerras033ef332005-10-26 17:05:24 +1000288 select PPC_RTAS
Paul Mackerras830825d2005-10-26 17:16:38 +1000289 select PPC_MPC106
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000290 default y
291
292config PPC_PMAC
293 bool " Apple PowerMac based machines"
294 depends on PPC_MULTIPLATFORM
Paul Mackerras25635c72005-10-26 16:36:55 +1000295 select PPC_INDIRECT_PCI if PPC32
Paul Mackerrasb6a4ce52005-10-26 22:54:17 +1000296 select PPC_MPC106 if PPC32
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000297 default y
298
299config PPC_PMAC64
300 bool
301 depends on PPC_PMAC && POWER4
Paul Mackerras35499c02005-10-22 16:02:39 +1000302 select U3_DART
Paul Mackerras8ad200d2005-11-04 13:28:58 +1100303 select GENERIC_TBSYNC
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000304 default y
305
306config PPC_PREP
307 bool " PowerPC Reference Platform (PReP) based machines"
Paul Mackerras5be396b2005-11-14 17:31:55 +1100308 depends on PPC_MULTIPLATFORM && PPC32 && BROKEN
Paul Mackerrasf9bd1702005-10-26 16:47:42 +1000309 select PPC_I8259
Paul Mackerras25635c72005-10-26 16:36:55 +1000310 select PPC_INDIRECT_PCI
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000311 default y
312
313config PPC_MAPLE
314 depends on PPC_MULTIPLATFORM && PPC64
315 bool " Maple 970FX Evaluation Board"
316 select U3_DART
317 select MPIC_BROKEN_U3
Paul Mackerras8ad200d2005-11-04 13:28:58 +1100318 select GENERIC_TBSYNC
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000319 default n
320 help
321 This option enables support for the Maple 970FX Evaluation Board.
322 For more informations, refer to <http://www.970eval.com>
323
Arnd Bergmannf3f66f52005-10-31 20:08:37 -0500324config PPC_CELL
325 bool " Cell Broadband Processor Architecture"
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000326 depends on PPC_MULTIPLATFORM && PPC64
Paul Mackerras033ef332005-10-26 17:05:24 +1000327 select PPC_RTAS
Arnd Bergmannedf03c12005-10-31 20:08:40 -0500328 select MMIO_NVRAM
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000329
330config PPC_OF
331 bool
Paul Mackerras187a0062005-10-06 12:49:05 +1000332 depends on PPC_MULTIPLATFORM # for now
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000333 default y
334
335config XICS
336 depends on PPC_PSERIES
337 bool
338 default y
339
340config U3_DART
341 bool
342 depends on PPC_MULTIPLATFORM && PPC64
343 default n
344
345config MPIC
Paul Mackerrasbbd0abd2005-10-26 21:45:56 +1000346 depends on PPC_PSERIES || PPC_PMAC || PPC_MAPLE || PPC_CHRP
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000347 bool
348 default y
349
Paul Mackerras033ef332005-10-26 17:05:24 +1000350config PPC_RTAS
351 bool
352 default n
353
354config RTAS_ERROR_LOGGING
355 bool
356 depends on PPC_RTAS
357 default n
358
Paul Mackerrasf4fcbbe2005-11-03 14:41:19 +1100359config RTAS_PROC
360 bool "Proc interface to RTAS"
Arnd Bergmanne9add2e2005-10-31 20:08:39 -0500361 depends on PPC_RTAS
Paul Mackerrasf4fcbbe2005-11-03 14:41:19 +1100362 default y
363
364config RTAS_FLASH
365 tristate "Firmware flash interface"
366 depends on PPC64 && RTAS_PROC
Arnd Bergmanne9add2e2005-10-31 20:08:39 -0500367
Arnd Bergmannedf03c12005-10-31 20:08:40 -0500368config MMIO_NVRAM
369 bool
370 default n
371
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000372config MPIC_BROKEN_U3
373 bool
374 depends on PPC_MAPLE
375 default y
376
Arnd Bergmannf3f66f52005-10-31 20:08:37 -0500377config CELL_IIC
378 depends on PPC_CELL
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000379 bool
380 default y
381
382config IBMVIO
383 depends on PPC_PSERIES || PPC_ISERIES
384 bool
385 default y
386
Heiko J Schickd7a30102005-11-16 08:56:43 +0100387config IBMEBUS
388 depends on PPC_PSERIES
389 bool "Support for GX bus based adapters"
390 default y
391 help
392 Bus device driver for GX bus based adapters.
393
Paul Mackerras830825d2005-10-26 17:16:38 +1000394config PPC_MPC106
395 bool
396 default n
397
Paul Mackerras8ad200d2005-11-04 13:28:58 +1100398config GENERIC_TBSYNC
399 bool
400 default y if CONFIG_PPC32 && CONFIG_SMP
401 default n
402
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000403source "drivers/cpufreq/Kconfig"
404
405config CPU_FREQ_PMAC
406 bool "Support for Apple PowerBooks"
407 depends on CPU_FREQ && ADB_PMU && PPC32
408 select CPU_FREQ_TABLE
409 help
410 This adds support for frequency switching on Apple PowerBooks,
411 this currently includes some models of iBook & Titanium
412 PowerBook.
413
Benjamin Herrenschmidt43501472005-11-07 14:27:33 +1100414config CPU_FREQ_PMAC64
415 bool "Support for some Apple G5s"
416 depends on CPU_FREQ && PMAC_SMU && PPC64
417 select CPU_FREQ_TABLE
418 help
419 This adds support for frequency switching on Apple iMac G5,
420 and some of the more recent desktop G5 machines as well.
421
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000422config PPC601_SYNC_FIX
423 bool "Workarounds for PPC601 bugs"
424 depends on 6xx && (PPC_PREP || PPC_PMAC)
425 help
426 Some versions of the PPC601 (the first PowerPC chip) have bugs which
427 mean that extra synchronization instructions are required near
428 certain instructions, typically those that make major changes to the
429 CPU state. These extra instructions reduce performance slightly.
430 If you say N here, these extra instructions will not be included,
431 resulting in a kernel which will run faster but may not run at all
432 on some systems with the PPC601 chip.
433
434 If in doubt, say Y here.
435
436config TAU
437 bool "Thermal Management Support"
438 depends on 6xx
439 help
440 G3 and G4 processors have an on-chip temperature sensor called the
441 'Thermal Assist Unit (TAU)', which, in theory, can measure the on-die
442 temperature within 2-4 degrees Celsius. This option shows the current
443 on-die temperature in /proc/cpuinfo if the cpu supports it.
444
445 Unfortunately, on some chip revisions, this sensor is very inaccurate
446 and in some cases, does not work at all, so don't assume the cpu
447 temp is actually what /proc/cpuinfo says it is.
448
449config TAU_INT
450 bool "Interrupt driven TAU driver (DANGEROUS)"
451 depends on TAU
452 ---help---
453 The TAU supports an interrupt driven mode which causes an interrupt
454 whenever the temperature goes out of range. This is the fastest way
455 to get notified the temp has exceeded a range. With this option off,
456 a timer is used to re-check the temperature periodically.
457
458 However, on some cpus it appears that the TAU interrupt hardware
459 is buggy and can cause a situation which would lead unexplained hard
460 lockups.
461
462 Unless you are extending the TAU driver, or enjoy kernel/hardware
463 debugging, leave this option off.
464
465config TAU_AVERAGE
466 bool "Average high and low temp"
467 depends on TAU
468 ---help---
469 The TAU hardware can compare the temperature to an upper and lower
470 bound. The default behavior is to show both the upper and lower
471 bound in /proc/cpuinfo. If the range is large, the temperature is
472 either changing a lot, or the TAU hardware is broken (likely on some
473 G4's). If the range is small (around 4 degrees), the temperature is
474 relatively stable. If you say Y here, a single temperature value,
475 halfway between the upper and lower bounds, will be reported in
476 /proc/cpuinfo.
477
478 If in doubt, say N here.
479endmenu
480
481source arch/powerpc/platforms/embedded6xx/Kconfig
482source arch/powerpc/platforms/4xx/Kconfig
483source arch/powerpc/platforms/85xx/Kconfig
484source arch/powerpc/platforms/8xx/Kconfig
Arnd Bergmann67207b92005-11-15 15:53:48 -0500485source arch/powerpc/platforms/cell/Kconfig
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000486
487menu "Kernel options"
488
489config HIGHMEM
490 bool "High memory support"
491 depends on PPC32
492
493source kernel/Kconfig.hz
494source kernel/Kconfig.preempt
495source "fs/Kconfig.binfmt"
496
497# We optimistically allocate largepages from the VM, so make the limit
498# large enough (16MB). This badly named config option is actually
499# max order + 1
500config FORCE_MAX_ZONEORDER
501 int
502 depends on PPC64
Mike Kravetz02864862005-11-07 13:48:59 -0800503 default "9" if PPC_64K_PAGES
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000504 default "13"
505
506config MATH_EMULATION
507 bool "Math emulation"
508 depends on 4xx || 8xx || E200 || E500
509 ---help---
510 Some PowerPC chips designed for embedded applications do not have
511 a floating-point unit and therefore do not implement the
512 floating-point instructions in the PowerPC instruction set. If you
513 say Y here, the kernel will include code to emulate a floating-point
514 unit, which will allow programs that use floating-point
515 instructions to run.
516
517config IOMMU_VMERGE
518 bool "Enable IOMMU virtual merging (EXPERIMENTAL)"
519 depends on EXPERIMENTAL && PPC64
520 default n
521 help
522 Cause IO segments sent to a device for DMA to be merged virtually
523 by the IOMMU when they happen to have been allocated contiguously.
524 This doesn't add pressure to the IOMMU allocator. However, some
525 drivers don't support getting large merged segments coming back
526 from *_map_sg(). Say Y if you know the drivers you are using are
527 properly handling this case.
528
529config HOTPLUG_CPU
530 bool "Support for enabling/disabling CPUs"
531 depends on SMP && HOTPLUG && EXPERIMENTAL && (PPC_PSERIES || PPC_PMAC)
532 ---help---
533 Say Y here to be able to disable and re-enable individual
534 CPUs at runtime on SMP machines.
535
536 Say N if you are unsure.
537
538config KEXEC
539 bool "kexec system call (EXPERIMENTAL)"
540 depends on PPC_MULTIPLATFORM && EXPERIMENTAL
541 help
542 kexec is a system call that implements the ability to shutdown your
543 current kernel, and to start another kernel. It is like a reboot
544 but it is indepedent of the system firmware. And like a reboot
545 you can start any kernel with it, not just Linux.
546
547 The name comes from the similiarity to the exec system call.
548
549 It is an ongoing process to be certain the hardware in a machine
550 is properly shutdown, so do not be surprised if this code does not
551 initially work for you. It may help to enable device hotplugging
552 support. As of this writing the exact hardware interface is
553 strongly in flux, so no good recommendation can be made.
554
555config EMBEDDEDBOOT
556 bool
557 depends on 8xx || 8260
558 default y
559
560config PC_KEYBOARD
561 bool "PC PS/2 style Keyboard"
562 depends on 4xx || CPM2
563
564config PPCBUG_NVRAM
565 bool "Enable reading PPCBUG NVRAM during boot" if PPLUS || LOPEC
566 default y if PPC_PREP
567
568config IRQ_ALL_CPUS
569 bool "Distribute interrupts on all CPUs by default"
570 depends on SMP && !MV64360
571 help
572 This option gives the kernel permission to distribute IRQs across
573 multiple CPUs. Saying N here will route all IRQs to the first
574 CPU. Generally saying Y is safe, although some problems have been
575 reported with SMP Power Macintoshes with this option enabled.
576
577source "arch/powerpc/platforms/pseries/Kconfig"
578
Andy Whitcroftffa27b62005-10-28 17:46:58 -0700579config NUMA
580 bool "NUMA support"
581 depends on PPC64
582 default y if SMP && PPC_PSERIES
583
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000584config ARCH_SELECT_MEMORY_MODEL
585 def_bool y
586 depends on PPC64
587
588config ARCH_FLATMEM_ENABLE
589 def_bool y
590 depends on PPC64 && !NUMA
591
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000592config ARCH_SPARSEMEM_ENABLE
593 def_bool y
Anton Blanchard45fb6ce2005-11-11 14:22:35 +1100594
595config ARCH_SPARSEMEM_DEFAULT
596 def_bool y
597 depends on SMP && PPC_PSERIES
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000598
599source "mm/Kconfig"
600
601config HAVE_ARCH_EARLY_PFN_TO_NID
602 def_bool y
603 depends on NEED_MULTIPLE_NODES
604
Mike Kravetz7e9191d2005-11-07 09:39:48 -0800605config ARCH_MEMORY_PROBE
606 def_bool y
607 depends on MEMORY_HOTPLUG
608
Benjamin Herrenschmidt3c726f82005-11-07 11:06:55 +1100609config PPC_64K_PAGES
610 bool "64k page size"
Benjamin Herrenschmidt863c84b2005-11-07 00:57:58 -0800611 depends on PPC64
Benjamin Herrenschmidt3c726f82005-11-07 11:06:55 +1100612 help
613 This option changes the kernel logical page size to 64k. On machines
614 without processor support for 64k pages, the kernel will simulate
615 them by loading each individual 4k page on demand transparently,
616 while on hardware with such support, it will be used to map
617 normal application pages.
618
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000619config SCHED_SMT
620 bool "SMT (Hyperthreading) scheduler support"
621 depends on PPC64 && SMP
622 default off
623 help
624 SMT scheduler support improves the CPU scheduler's decision making
625 when dealing with POWER5 cpus at a cost of slightly increased
626 overhead in some places. If unsure say N here.
627
628config PROC_DEVICETREE
Paul Mackerras5f296752005-10-17 20:14:59 +1000629 bool "Support for device tree in /proc"
630 depends on PROC_FS
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000631 help
632 This option adds a device-tree directory under /proc which contains
633 an image of the device tree that the kernel copies from Open
Paul Mackerras5f296752005-10-17 20:14:59 +1000634 Firmware or other boot firmware. If unsure, say Y here.
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000635
636source "arch/powerpc/platforms/prep/Kconfig"
637
638config CMDLINE_BOOL
639 bool "Default bootloader kernel arguments"
640 depends on !PPC_ISERIES
641
642config CMDLINE
643 string "Initial kernel command string"
644 depends on CMDLINE_BOOL
645 default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
646 help
647 On some platforms, there is currently no way for the boot loader to
648 pass arguments to the kernel. For these platforms, you can supply
649 some command-line options at build time by entering them here. In
650 most cases you will need to specify the root device here.
651
652if !44x || BROKEN
653source kernel/power/Kconfig
654endif
655
656config SECCOMP
657 bool "Enable seccomp to safely compute untrusted bytecode"
658 depends on PROC_FS
659 default y
660 help
661 This kernel feature is useful for number crunching applications
662 that may need to compute untrusted bytecode during their
663 execution. By using pipes or other transports made available to
664 the process as file descriptors supporting the read/write
665 syscalls, it's possible to isolate those applications in
666 their own address space using seccomp. Once seccomp is
667 enabled via /proc/<pid>/seccomp, it cannot be disabled
668 and the task is only allowed to execute a few safe syscalls
669 defined by each seccomp mode.
670
671 If unsure, say Y. Only embedded should say N here.
672
673endmenu
674
675config ISA_DMA_API
676 bool
677 default y
678
679menu "Bus options"
680
681config ISA
682 bool "Support for ISA-bus hardware"
683 depends on PPC_PREP || PPC_CHRP
Paul Mackerrasf9bd1702005-10-26 16:47:42 +1000684 select PPC_I8259
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000685 help
686 Find out whether you have ISA slots on your motherboard. ISA is the
687 name of a bus system, i.e. the way the CPU talks to the other stuff
688 inside your box. If you have an Apple machine, say N here; if you
689 have an IBM RS/6000 or pSeries machine or a PReP machine, say Y. If
690 you have an embedded board, consult your board documentation.
691
692config GENERIC_ISA_DMA
693 bool
694 depends on PPC64 || POWER4 || 6xx && !CPM2
695 default y
696
Paul Mackerrasf9bd1702005-10-26 16:47:42 +1000697config PPC_I8259
698 bool
699 default y if 85xx
700 default n
701
Paul Mackerras25635c72005-10-26 16:36:55 +1000702config PPC_INDIRECT_PCI
703 bool
704 depends on PCI
705 default y if 40x || 44x || 85xx || 83xx
706 default n
707
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000708config EISA
709 bool
710
711config SBUS
712 bool
713
714# Yes MCA RS/6000s exist but Linux-PPC does not currently support any
715config MCA
716 bool
717
718config PCI
719 bool "PCI support" if 40x || CPM2 || 83xx || 85xx || PPC_MPC52xx || (EMBEDDED && PPC_ISERIES)
720 default y if !40x && !CPM2 && !8xx && !APUS && !83xx && !85xx
721 default PCI_PERMEDIA if !4xx && !CPM2 && !8xx && APUS
722 default PCI_QSPAN if !4xx && !CPM2 && 8xx
723 help
724 Find out whether your system includes a PCI bus. PCI is the name of
725 a bus system, i.e. the way the CPU talks to the other stuff inside
726 your box. If you say Y here, the kernel will include drivers and
727 infrastructure code to support PCI bus devices.
728
729config PCI_DOMAINS
730 bool
731 default PCI
732
733config MPC83xx_PCI2
734 bool " Supprt for 2nd PCI host controller"
735 depends on PCI && MPC834x
736 default y if MPC834x_SYS
737
738config PCI_QSPAN
739 bool "QSpan PCI"
740 depends on !4xx && !CPM2 && 8xx
Paul Mackerrasf9bd1702005-10-26 16:47:42 +1000741 select PPC_I8259
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000742 help
743 Say Y here if you have a system based on a Motorola 8xx-series
744 embedded processor with a QSPAN PCI interface, otherwise say N.
745
746config PCI_8260
747 bool
748 depends on PCI && 8260
Paul Mackerras25635c72005-10-26 16:36:55 +1000749 select PPC_INDIRECT_PCI
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000750 default y
751
752config 8260_PCI9
753 bool " Enable workaround for MPC826x erratum PCI 9"
754 depends on PCI_8260 && !ADS8272
755 default y
756
757choice
758 prompt " IDMA channel for PCI 9 workaround"
759 depends on 8260_PCI9
760
761config 8260_PCI9_IDMA1
762 bool "IDMA1"
763
764config 8260_PCI9_IDMA2
765 bool "IDMA2"
766
767config 8260_PCI9_IDMA3
768 bool "IDMA3"
769
770config 8260_PCI9_IDMA4
771 bool "IDMA4"
772
773endchoice
774
775source "drivers/pci/Kconfig"
776
777source "drivers/pcmcia/Kconfig"
778
779source "drivers/pci/hotplug/Kconfig"
780
781endmenu
782
783menu "Advanced setup"
784 depends on PPC32
785
786config ADVANCED_OPTIONS
787 bool "Prompt for advanced kernel configuration options"
788 help
789 This option will enable prompting for a variety of advanced kernel
790 configuration options. These options can cause the kernel to not
791 work if they are set incorrectly, but can be used to optimize certain
792 aspects of kernel memory management.
793
794 Unless you know what you are doing, say N here.
795
796comment "Default settings for advanced configuration options are used"
797 depends on !ADVANCED_OPTIONS
798
799config HIGHMEM_START_BOOL
800 bool "Set high memory pool address"
801 depends on ADVANCED_OPTIONS && HIGHMEM
802 help
803 This option allows you to set the base address of the kernel virtual
804 area used to map high memory pages. This can be useful in
805 optimizing the layout of kernel virtual memory.
806
807 Say N here unless you know what you are doing.
808
809config HIGHMEM_START
810 hex "Virtual start address of high memory pool" if HIGHMEM_START_BOOL
811 default "0xfe000000"
812
813config LOWMEM_SIZE_BOOL
814 bool "Set maximum low memory"
815 depends on ADVANCED_OPTIONS
816 help
817 This option allows you to set the maximum amount of memory which
818 will be used as "low memory", that is, memory which the kernel can
819 access directly, without having to set up a kernel virtual mapping.
820 This can be useful in optimizing the layout of kernel virtual
821 memory.
822
823 Say N here unless you know what you are doing.
824
825config LOWMEM_SIZE
826 hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
827 default "0x30000000"
828
829config KERNEL_START_BOOL
830 bool "Set custom kernel base address"
831 depends on ADVANCED_OPTIONS
832 help
833 This option allows you to set the kernel virtual address at which
834 the kernel will map low memory (the kernel image will be linked at
835 this address). This can be useful in optimizing the virtual memory
836 layout of the system.
837
838 Say N here unless you know what you are doing.
839
840config KERNEL_START
841 hex "Virtual address of kernel base" if KERNEL_START_BOOL
842 default "0xc0000000"
843
844config TASK_SIZE_BOOL
845 bool "Set custom user task size"
846 depends on ADVANCED_OPTIONS
847 help
848 This option allows you to set the amount of virtual address space
849 allocated to user tasks. This can be useful in optimizing the
850 virtual memory layout of the system.
851
852 Say N here unless you know what you are doing.
853
854config TASK_SIZE
855 hex "Size of user task space" if TASK_SIZE_BOOL
856 default "0x80000000"
857
858config CONSISTENT_START_BOOL
859 bool "Set custom consistent memory pool address"
860 depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
861 help
862 This option allows you to set the base virtual address
863 of the the consistent memory pool. This pool of virtual
864 memory is used to make consistent memory allocations.
865
866config CONSISTENT_START
867 hex "Base virtual address of consistent memory pool" if CONSISTENT_START_BOOL
868 default "0xff100000" if NOT_COHERENT_CACHE
869
870config CONSISTENT_SIZE_BOOL
871 bool "Set custom consistent memory pool size"
872 depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
873 help
874 This option allows you to set the size of the the
875 consistent memory pool. This pool of virtual memory
876 is used to make consistent memory allocations.
877
878config CONSISTENT_SIZE
879 hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
880 default "0x00200000" if NOT_COHERENT_CACHE
881
882config BOOT_LOAD_BOOL
883 bool "Set the boot link/load address"
884 depends on ADVANCED_OPTIONS && !PPC_MULTIPLATFORM
885 help
886 This option allows you to set the initial load address of the zImage
887 or zImage.initrd file. This can be useful if you are on a board
888 which has a small amount of memory.
889
890 Say N here unless you know what you are doing.
891
892config BOOT_LOAD
893 hex "Link/load address for booting" if BOOT_LOAD_BOOL
894 default "0x00400000" if 40x || 8xx || 8260
895 default "0x01000000" if 44x
896 default "0x00800000"
897
898config PIN_TLB
899 bool "Pinned Kernel TLBs (860 ONLY)"
900 depends on ADVANCED_OPTIONS && 8xx
901endmenu
902
Stephen Rothwellcabb5582005-09-30 16:16:52 +1000903if PPC64
904config KERNEL_START
905 hex
Stephen Rothwelleeb2d212005-09-30 17:24:15 +1000906 default "0xc000000000000000"
Stephen Rothwellcabb5582005-09-30 16:16:52 +1000907endif
908
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000909source "net/Kconfig"
910
911source "drivers/Kconfig"
912
913source "fs/Kconfig"
914
915# XXX source "arch/ppc/8xx_io/Kconfig"
916
917# XXX source "arch/ppc/8260_io/Kconfig"
918
919source "arch/powerpc/platforms/iseries/Kconfig"
920
921source "lib/Kconfig"
922
Prasanna S Panchamukhicd6b0762005-11-07 00:59:14 -0800923menu "Instrumentation Support"
924 depends on EXPERIMENTAL
925
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000926source "arch/powerpc/oprofile/Kconfig"
927
Prasanna S Panchamukhicd6b0762005-11-07 00:59:14 -0800928config KPROBES
929 bool "Kprobes (EXPERIMENTAL)"
Paul Mackerras7568cb42005-11-14 17:30:17 +1100930 depends on PPC64
Prasanna S Panchamukhicd6b0762005-11-07 00:59:14 -0800931 help
932 Kprobes allows you to trap at almost any kernel address and
933 execute a callback function. register_kprobe() establishes
934 a probepoint and specifies the callback. Kprobes is useful
935 for kernel debugging, non-intrusive instrumentation and testing.
936 If in doubt, say "N".
937endmenu
938
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000939source "arch/powerpc/Kconfig.debug"
940
941source "security/Kconfig"
942
943config KEYS_COMPAT
944 bool
945 depends on COMPAT && KEYS
946 default y
947
948source "crypto/Kconfig"