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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
travis@sgi.com988c3882008-01-30 23:27:58 +010045config HAVE_SETUP_PER_CPU_AREA
travis@sgi.comb32ef632008-01-30 13:32:51 +010046 def_bool PPC64
47
Ingo Molnar0d7012a2006-06-29 02:24:43 -070048config IRQ_PER_CPU
49 bool
50 default y
51
Paul Mackerras14cf11a2005-09-26 16:04:21 +100052config RWSEM_GENERIC_SPINLOCK
53 bool
54
55config RWSEM_XCHGADD_ALGORITHM
56 bool
57 default y
58
Nick Piggin95c354f2008-01-30 13:31:20 +010059config GENERIC_LOCKBREAK
60 bool
61 default y
62 depends on SMP && PREEMPT
63
David Howellsf0d1b0b2006-12-08 02:37:49 -080064config ARCH_HAS_ILOG2_U32
65 bool
David Howellsef55d532006-12-08 02:37:53 -080066 default y
David Howellsf0d1b0b2006-12-08 02:37:49 -080067
68config ARCH_HAS_ILOG2_U64
69 bool
David Howellsef55d532006-12-08 02:37:53 -080070 default y if 64BIT
David Howellsf0d1b0b2006-12-08 02:37:49 -080071
Akinobu Mitae779b2f2006-03-26 01:39:33 -080072config GENERIC_HWEIGHT
73 bool
74 default y
75
Paul Mackerras14cf11a2005-09-26 16:04:21 +100076config GENERIC_CALIBRATE_DELAY
77 bool
78 default y
79
Jon Mason0a9cb462006-05-19 15:35:32 -050080config GENERIC_FIND_NEXT_BIT
81 bool
82 default y
83
Stephen Rothwellf057eac2007-07-15 23:40:05 -070084config ARCH_NO_VIRT_TO_BUS
85 def_bool PPC64
86
Paul Mackerras14cf11a2005-09-26 16:04:21 +100087config PPC
88 bool
89 default y
Mathieu Desnoyers42d4b832008-02-02 15:10:34 -050090 select HAVE_OPROFILE
Mathieu Desnoyers3f550092008-02-02 15:10:35 -050091 select HAVE_KPROBES
Paul Mackerras14cf11a2005-09-26 16:04:21 +100092
93config EARLY_PRINTK
94 bool
Benjamin Herrenschmidt51d30822005-11-23 17:57:25 +110095 default y
Paul Mackerras14cf11a2005-09-26 16:04:21 +100096
97config COMPAT
98 bool
99 default y if PPC64
Roland McGrath01e31db2008-01-02 17:03:11 -0800100 select COMPAT_BINFMT_ELF
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000101
102config SYSVIPC_COMPAT
103 bool
104 depends on COMPAT && SYSVIPC
105 default y
106
107# All PPC32s use generic nvram driver through ppc_md
108config GENERIC_NVRAM
109 bool
110 default y if PPC32
111
112config SCHED_NO_NO_OMIT_FRAME_POINTER
113 bool
114 default y
115
116config ARCH_MAY_HAVE_PC_FDC
117 bool
Stephen Rothwellbed59272007-03-04 17:04:44 +1100118 default !PPC_PSERIES || PCI
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000119
Kumar Gala08264cb2006-01-10 21:43:56 -0600120config PPC_OF
121 def_bool y
122
Stephen Rothwell97e873e2007-05-01 16:26:07 +1000123config OF
124 def_bool y
125
Kumar Gala08264cb2006-01-10 21:43:56 -0600126config PPC_UDBG_16550
127 bool
128 default n
129
Kumar Gala08264cb2006-01-10 21:43:56 -0600130config GENERIC_TBSYNC
131 bool
132 default y if PPC32 && SMP
133 default n
134
Al Viroe65e1fc2006-09-12 03:04:40 -0400135config AUDIT_ARCH
136 bool
137 default y
138
Jeremy Fitzhardinge73c9cea2006-12-08 03:30:41 -0800139config GENERIC_BUG
140 bool
141 default y
142 depends on BUG
143
Johannes Bergb3028872007-03-20 05:18:02 +1100144config SYS_SUPPORTS_APM_EMULATION
Kumar Gala58da10b2007-05-23 09:51:46 -0500145 default y if PMAC_APM_EMU
Johannes Bergb3028872007-03-20 05:18:02 +1100146 bool
147
Kumar Galaf4fc4a52006-01-16 10:53:22 -0600148config DEFAULT_UIMAGE
149 bool
150 help
151 Used to allow a board to specify it wants a uImage built by default
152 default n
153
Scott Woodb09c1642008-01-17 16:31:40 -0600154config REDBOOT
155 bool
156
Johannes Berg801e4062007-12-08 02:12:39 +0100157config HIBERNATE_32
Johannes Berg543b9fd2007-05-03 22:31:38 +1000158 bool
Johannes Berg801e4062007-12-08 02:12:39 +0100159 depends on (PPC_PMAC && !SMP) || BROKEN
160 default y
161
162config HIBERNATE_64
163 bool
164 depends on BROKEN || (PPC_PMAC64 && EXPERIMENTAL)
165 default y
166
167config ARCH_HIBERNATION_POSSIBLE
168 bool
169 depends on (PPC64 && HIBERNATE_64) || (PPC32 && HIBERNATE_32)
Johannes Berg543b9fd2007-05-03 22:31:38 +1000170 default y
171
Johannes Bergf4cb5702007-12-08 02:14:00 +0100172config ARCH_SUSPEND_POSSIBLE
173 def_bool y
174 depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200
175
Benjamin Herrenschmidt4c75a6f2006-11-11 17:24:53 +1100176config PPC_DCR_NATIVE
177 bool
178 default n
179
180config PPC_DCR_MMIO
181 bool
182 default n
183
184config PPC_DCR
185 bool
186 depends on PPC_DCR_NATIVE || PPC_DCR_MMIO
187 default y
188
Benjamin Herrenschmidt4c9d2802006-11-11 17:25:08 +1100189config PPC_OF_PLATFORM_PCI
190 bool
Stephen Rothwell373a6da2007-12-21 15:37:07 +1100191 depends on PCI
Benjamin Herrenschmidt4c9d2802006-11-11 17:25:08 +1100192 depends on PPC64 # not supported on 32 bits yet
193 default n
194
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000195source "init/Kconfig"
196
Benjamin Herrenschmidta2d2e1e2007-12-21 15:39:24 +1100197source "arch/powerpc/sysdev/Kconfig"
Kumar Gala4330f5d2007-03-16 09:32:17 -0500198source "arch/powerpc/platforms/Kconfig"
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000199
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000200menu "Kernel options"
201
202config HIGHMEM
203 bool "High memory support"
204 depends on PPC32
205
Tony Breeds1ad74992007-09-21 13:26:03 +1000206source kernel/time/Kconfig
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000207source kernel/Kconfig.hz
208source kernel/Kconfig.preempt
209source "fs/Kconfig.binfmt"
210
211# We optimistically allocate largepages from the VM, so make the limit
212# large enough (16MB). This badly named config option is actually
213# max order + 1
214config FORCE_MAX_ZONEORDER
215 int
216 depends on PPC64
Mike Kravetz02864862005-11-07 13:48:59 -0800217 default "9" if PPC_64K_PAGES
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000218 default "13"
219
Mel Gormanba72cb82007-11-28 16:21:13 -0800220config HUGETLB_PAGE_SIZE_VARIABLE
221 bool
222 depends on HUGETLB_PAGE
223 default y
224
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000225config MATH_EMULATION
226 bool "Math emulation"
Kumar Gala4d527192007-01-26 00:23:34 -0600227 depends on 4xx || 8xx || E200 || PPC_MPC832x || E500
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000228 ---help---
229 Some PowerPC chips designed for embedded applications do not have
230 a floating-point unit and therefore do not implement the
231 floating-point instructions in the PowerPC instruction set. If you
232 say Y here, the kernel will include code to emulate a floating-point
233 unit, which will allow programs that use floating-point
234 instructions to run.
235
Scott Wood5dd57a12007-09-18 15:29:35 -0500236config 8XX_MINIMAL_FPEMU
237 bool "Minimal math emulation for 8xx"
238 depends on 8xx && !MATH_EMULATION
239 help
240 Older arch/ppc kernels still emulated a few floating point
241 instructions such as load and store, even when full math
242 emulation is disabled. Say "Y" here if you want to preserve
243 this behavior.
244
245 It is recommended that you build a soft-float userspace instead.
246
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000247config IOMMU_VMERGE
Linas Vepstas768cc2d2007-07-18 02:09:35 +1000248 bool "Enable IOMMU virtual merging"
249 depends on PPC64
250 default y
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000251 help
252 Cause IO segments sent to a device for DMA to be merged virtually
253 by the IOMMU when they happen to have been allocated contiguously.
254 This doesn't add pressure to the IOMMU allocator. However, some
255 drivers don't support getting large merged segments coming back
Linas Vepstas768cc2d2007-07-18 02:09:35 +1000256 from *_map_sg().
257
258 Most drivers don't have this problem; it is safe to say Y here.
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000259
FUJITA Tomonorifb3475e2008-02-04 22:28:08 -0800260config IOMMU_HELPER
261 def_bool PPC64
262
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000263config HOTPLUG_CPU
264 bool "Support for enabling/disabling CPUs"
265 depends on SMP && HOTPLUG && EXPERIMENTAL && (PPC_PSERIES || PPC_PMAC)
266 ---help---
267 Say Y here to be able to disable and re-enable individual
268 CPUs at runtime on SMP machines.
269
270 Say N if you are unsure.
271
Yasunori Gotocc576372006-06-29 02:24:27 -0700272config ARCH_ENABLE_MEMORY_HOTPLUG
273 def_bool y
274
Badari Pulavartya99824f2008-02-05 00:10:18 -0800275config ARCH_HAS_WALK_MEMORY
276 def_bool y
277
Badari Pulavarty14824712008-02-05 00:10:17 -0800278config ARCH_ENABLE_MEMORY_HOTREMOVE
279 def_bool y
280
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000281config KEXEC
282 bool "kexec system call (EXPERIMENTAL)"
Dale Farnsworthfd4ba7e2007-05-12 10:58:43 +1000283 depends on (PPC_PRPMC2800 || PPC_MULTIPLATFORM) && EXPERIMENTAL
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000284 help
285 kexec is a system call that implements the ability to shutdown your
286 current kernel, and to start another kernel. It is like a reboot
Matt LaPlante1f1332f2006-06-29 01:32:47 -0400287 but it is independent of the system firmware. And like a reboot
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000288 you can start any kernel with it, not just Linux.
289
Matt LaPlante1f1332f2006-06-29 01:32:47 -0400290 The name comes from the similarity to the exec system call.
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000291
292 It is an ongoing process to be certain the hardware in a machine
293 is properly shutdown, so do not be surprised if this code does not
294 initially work for you. It may help to enable device hotplugging
295 support. As of this writing the exact hardware interface is
296 strongly in flux, so no good recommendation can be made.
297
Haren Mynenie8625d462006-01-14 13:48:25 -0800298config CRASH_DUMP
Michael Ellermancd9c99d2006-03-10 15:01:08 +1100299 bool "Build a kdump crash kernel (EXPERIMENTAL)"
Haren Mynenie8625d462006-01-14 13:48:25 -0800300 depends on PPC_MULTIPLATFORM && PPC64 && EXPERIMENTAL
301 help
302 Build a kernel suitable for use as a kdump capture kernel.
303 The kernel will be linked at a different address than normal, and
304 so can only be used for Kdump.
305
306 Don't change this unless you know what you are doing.
307
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000308config PPCBUG_NVRAM
309 bool "Enable reading PPCBUG NVRAM during boot" if PPLUS || LOPEC
310 default y if PPC_PREP
311
312config IRQ_ALL_CPUS
313 bool "Distribute interrupts on all CPUs by default"
314 depends on SMP && !MV64360
315 help
316 This option gives the kernel permission to distribute IRQs across
317 multiple CPUs. Saying N here will route all IRQs to the first
318 CPU. Generally saying Y is safe, although some problems have been
319 reported with SMP Power Macintoshes with this option enabled.
320
Andy Whitcroftffa27b62005-10-28 17:46:58 -0700321config NUMA
322 bool "NUMA support"
323 depends on PPC64
324 default y if SMP && PPC_PSERIES
325
Yasunori Gotoc80d79d2006-04-10 22:53:53 -0700326config NODES_SHIFT
327 int
328 default "4"
329 depends on NEED_MULTIPLE_NODES
330
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000331config ARCH_SELECT_MEMORY_MODEL
332 def_bool y
333 depends on PPC64
334
335config ARCH_FLATMEM_ENABLE
Andy Whitcroft9100b202005-11-29 19:20:55 +0000336 def_bool y
337 depends on (PPC64 && !NUMA) || PPC32
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000338
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000339config ARCH_SPARSEMEM_ENABLE
340 def_bool y
Andy Whitcroft9100b202005-11-29 19:20:55 +0000341 depends on PPC64
Andy Whitcroftd29eff72007-10-16 01:24:17 -0700342 select SPARSEMEM_VMEMMAP_ENABLE
Anton Blanchard45fb6ce2005-11-11 14:22:35 +1100343
344config ARCH_SPARSEMEM_DEFAULT
345 def_bool y
Benjamin Herrenschmidt78bde532007-02-13 11:46:06 +1100346 depends on (SMP && PPC_PSERIES) || PPC_PS3
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000347
Mel Gormanc67c3cb2006-09-27 01:49:49 -0700348config ARCH_POPULATES_NODE_MAP
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000349 def_bool y
Mel Gormanc67c3cb2006-09-27 01:49:49 -0700350
351source "mm/Kconfig"
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000352
Mike Kravetz7e9191d2005-11-07 09:39:48 -0800353config ARCH_MEMORY_PROBE
354 def_bool y
355 depends on MEMORY_HOTPLUG
356
Andy Whitcroft75167952006-10-21 10:24:14 -0700357# Some NUMA nodes have memory ranges that span
358# other nodes. Even though a pfn is valid and
359# between a node's start and end pfns, it may not
360# reside on that node. See memmap_init_zone()
361# for details.
362config NODES_SPAN_OTHER_NODES
363 def_bool y
364 depends on NEED_MULTIPLE_NODES
365
Benjamin Herrenschmidt16c2d472007-05-08 16:27:28 +1000366config PPC_HAS_HASH_64K
367 bool
368 depends on PPC64
369 default n
370
Benjamin Herrenschmidt3c726f82005-11-07 11:06:55 +1100371config PPC_64K_PAGES
372 bool "64k page size"
Benjamin Herrenschmidt863c84b2005-11-07 00:57:58 -0800373 depends on PPC64
Benjamin Herrenschmidt16c2d472007-05-08 16:27:28 +1000374 select PPC_HAS_HASH_64K
Benjamin Herrenschmidt3c726f82005-11-07 11:06:55 +1100375 help
376 This option changes the kernel logical page size to 64k. On machines
Kumar Gala98750262007-04-12 18:01:34 -0500377 without processor support for 64k pages, the kernel will simulate
378 them by loading each individual 4k page on demand transparently,
379 while on hardware with such support, it will be used to map
380 normal application pages.
Benjamin Herrenschmidt3c726f82005-11-07 11:06:55 +1100381
Paul Mackerrasfa282372008-01-24 08:35:13 +1100382config PPC_SUBPAGE_PROT
383 bool "Support setting protections for 4k subpages"
384 depends on PPC_64K_PAGES
385 help
386 This option adds support for a system call to allow user programs
387 to set access permissions (read/write, readonly, or no access)
388 on the 4k subpages of each 64k page.
389
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000390config SCHED_SMT
391 bool "SMT (Hyperthreading) scheduler support"
392 depends on PPC64 && SMP
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000393 help
394 SMT scheduler support improves the CPU scheduler's decision making
395 when dealing with POWER5 cpus at a cost of slightly increased
396 overhead in some places. If unsure say N here.
397
398config PROC_DEVICETREE
Paul Mackerras5f296752005-10-17 20:14:59 +1000399 bool "Support for device tree in /proc"
400 depends on PROC_FS
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000401 help
402 This option adds a device-tree directory under /proc which contains
403 an image of the device tree that the kernel copies from Open
Paul Mackerras5f296752005-10-17 20:14:59 +1000404 Firmware or other boot firmware. If unsure, say Y here.
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000405
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000406config CMDLINE_BOOL
407 bool "Default bootloader kernel arguments"
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000408
409config CMDLINE
410 string "Initial kernel command string"
411 depends on CMDLINE_BOOL
412 default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
413 help
414 On some platforms, there is currently no way for the boot loader to
415 pass arguments to the kernel. For these platforms, you can supply
416 some command-line options at build time by entering them here. In
417 most cases you will need to specify the root device here.
418
419if !44x || BROKEN
Johannes Bergb28f5082008-01-15 23:17:00 -0500420config ARCH_WANTS_FREEZER_CONTROL
421 def_bool y
422 depends on ADB_PMU
423
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000424source kernel/power/Kconfig
425endif
426
427config SECCOMP
428 bool "Enable seccomp to safely compute untrusted bytecode"
429 depends on PROC_FS
430 default y
431 help
432 This kernel feature is useful for number crunching applications
433 that may need to compute untrusted bytecode during their
434 execution. By using pipes or other transports made available to
435 the process as file descriptors supporting the read/write
436 syscalls, it's possible to isolate those applications in
437 their own address space using seccomp. Once seccomp is
438 enabled via /proc/<pid>/seccomp, it cannot be disabled
439 and the task is only allowed to execute a few safe syscalls
440 defined by each seccomp mode.
441
442 If unsure, say Y. Only embedded should say N here.
443
Scott Wood270429b2007-04-17 09:24:51 +1000444config WANT_DEVICE_TREE
445 bool
446 default n
447
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000448endmenu
449
450config ISA_DMA_API
451 bool
Stephen Rothwell373a6da2007-12-21 15:37:07 +1100452 default !PPC_ISERIES || PCI
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000453
454menu "Bus options"
455
456config ISA
457 bool "Support for ISA-bus hardware"
458 depends on PPC_PREP || PPC_CHRP
Paul Mackerrasf9bd1702005-10-26 16:47:42 +1000459 select PPC_I8259
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000460 help
461 Find out whether you have ISA slots on your motherboard. ISA is the
462 name of a bus system, i.e. the way the CPU talks to the other stuff
463 inside your box. If you have an Apple machine, say N here; if you
464 have an IBM RS/6000 or pSeries machine or a PReP machine, say Y. If
465 you have an embedded board, consult your board documentation.
466
Christoph Lameter5ac6da62007-02-10 01:43:14 -0800467config ZONE_DMA
468 bool
469 default y
470
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000471config GENERIC_ISA_DMA
472 bool
473 depends on PPC64 || POWER4 || 6xx && !CPM2
474 default y
475
Paul Mackerras25635c72005-10-26 16:36:55 +1000476config PPC_INDIRECT_PCI
477 bool
478 depends on PCI
Becky Bruce63dafe52006-01-14 16:57:39 -0600479 default y if 40x || 44x
Paul Mackerras25635c72005-10-26 16:36:55 +1000480 default n
481
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000482config EISA
483 bool
484
485config SBUS
486 bool
487
Kumar Gala08264cb2006-01-10 21:43:56 -0600488config FSL_SOC
489 bool
490
Roy Zang55c44992007-07-10 18:44:34 +0800491config FSL_PCI
492 bool
493 select PPC_INDIRECT_PCI
494
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000495# Yes MCA RS/6000s exist but Linux-PPC does not currently support any
496config MCA
497 bool
498
499config PCI
Jon Loeliger53158622006-08-09 10:37:28 -0500500 bool "PCI support" if 40x || CPM2 || PPC_83xx || PPC_85xx || PPC_86xx \
Stephen Rothwellbed59272007-03-04 17:04:44 +1100501 || PPC_MPC52xx || (EMBEDDED && (PPC_PSERIES || PPC_ISERIES)) \
Sean MacLennanf9bdedb2008-01-22 04:55:29 +1100502 || PPC_PS3 || 44x
John Rigbye177edc2008-01-29 04:28:53 +1100503 default y if !40x && !CPM2 && !8xx && !PPC_MPC512x && !PPC_83xx \
Jon Loeliger53158622006-08-09 10:37:28 -0500504 && !PPC_85xx && !PPC_86xx
David Gibsonf21f49e2007-06-13 14:52:54 +1000505 default PCI_PERMEDIA if !4xx && !CPM2 && !8xx
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000506 default PCI_QSPAN if !4xx && !CPM2 && 8xx
Michael Ellermandf87ef52007-05-08 12:58:34 +1000507 select ARCH_SUPPORTS_MSI
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000508 help
509 Find out whether your system includes a PCI bus. PCI is the name of
510 a bus system, i.e. the way the CPU talks to the other stuff inside
511 your box. If you say Y here, the kernel will include drivers and
512 infrastructure code to support PCI bus devices.
513
514config PCI_DOMAINS
Matthew Wilcox36e23592007-07-10 10:54:40 -0600515 def_bool PCI
516
517config PCI_SYSCALL
518 def_bool PCI
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000519
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000520config PCI_QSPAN
521 bool "QSpan PCI"
522 depends on !4xx && !CPM2 && 8xx
Paul Mackerrasf9bd1702005-10-26 16:47:42 +1000523 select PPC_I8259
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000524 help
525 Say Y here if you have a system based on a Motorola 8xx-series
526 embedded processor with a QSPAN PCI interface, otherwise say N.
527
528config PCI_8260
529 bool
530 depends on PCI && 8260
Paul Mackerras25635c72005-10-26 16:36:55 +1000531 select PPC_INDIRECT_PCI
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000532 default y
533
534config 8260_PCI9
Andrew Morton4a3ecc62006-06-01 20:36:04 -0700535 bool "Enable workaround for MPC826x erratum PCI 9"
Scott Woode00c5492007-09-14 15:41:56 -0500536 depends on PCI_8260 && !8272
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000537 default y
538
539choice
Andrew Morton4a3ecc62006-06-01 20:36:04 -0700540 prompt "IDMA channel for PCI 9 workaround"
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000541 depends on 8260_PCI9
542
543config 8260_PCI9_IDMA1
544 bool "IDMA1"
545
546config 8260_PCI9_IDMA2
547 bool "IDMA2"
548
549config 8260_PCI9_IDMA3
550 bool "IDMA3"
551
552config 8260_PCI9_IDMA4
553 bool "IDMA4"
554
555endchoice
556
Jake Moilanenbb53bb32006-06-07 16:05:46 -0500557source "drivers/pci/pcie/Kconfig"
558
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000559source "drivers/pci/Kconfig"
560
561source "drivers/pcmcia/Kconfig"
562
563source "drivers/pci/hotplug/Kconfig"
564
565endmenu
566
567menu "Advanced setup"
568 depends on PPC32
569
570config ADVANCED_OPTIONS
571 bool "Prompt for advanced kernel configuration options"
572 help
573 This option will enable prompting for a variety of advanced kernel
574 configuration options. These options can cause the kernel to not
575 work if they are set incorrectly, but can be used to optimize certain
576 aspects of kernel memory management.
577
578 Unless you know what you are doing, say N here.
579
580comment "Default settings for advanced configuration options are used"
581 depends on !ADVANCED_OPTIONS
582
583config HIGHMEM_START_BOOL
584 bool "Set high memory pool address"
585 depends on ADVANCED_OPTIONS && HIGHMEM
586 help
587 This option allows you to set the base address of the kernel virtual
588 area used to map high memory pages. This can be useful in
589 optimizing the layout of kernel virtual memory.
590
591 Say N here unless you know what you are doing.
592
593config HIGHMEM_START
594 hex "Virtual start address of high memory pool" if HIGHMEM_START_BOOL
595 default "0xfe000000"
596
597config LOWMEM_SIZE_BOOL
598 bool "Set maximum low memory"
599 depends on ADVANCED_OPTIONS
600 help
601 This option allows you to set the maximum amount of memory which
602 will be used as "low memory", that is, memory which the kernel can
603 access directly, without having to set up a kernel virtual mapping.
604 This can be useful in optimizing the layout of kernel virtual
605 memory.
606
607 Say N here unless you know what you are doing.
608
609config LOWMEM_SIZE
610 hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
611 default "0x30000000"
612
613config KERNEL_START_BOOL
614 bool "Set custom kernel base address"
615 depends on ADVANCED_OPTIONS
616 help
617 This option allows you to set the kernel virtual address at which
618 the kernel will map low memory (the kernel image will be linked at
619 this address). This can be useful in optimizing the virtual memory
620 layout of the system.
621
622 Say N here unless you know what you are doing.
623
624config KERNEL_START
625 hex "Virtual address of kernel base" if KERNEL_START_BOOL
626 default "0xc0000000"
627
628config TASK_SIZE_BOOL
629 bool "Set custom user task size"
630 depends on ADVANCED_OPTIONS
631 help
632 This option allows you to set the amount of virtual address space
633 allocated to user tasks. This can be useful in optimizing the
634 virtual memory layout of the system.
635
636 Say N here unless you know what you are doing.
637
638config TASK_SIZE
639 hex "Size of user task space" if TASK_SIZE_BOOL
Kumar Gala4d9e55102007-10-11 13:40:21 -0500640 default "0x80000000" if PPC_PREP || PPC_8xx
641 default "0xc0000000"
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000642
643config CONSISTENT_START_BOOL
644 bool "Set custom consistent memory pool address"
645 depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
646 help
647 This option allows you to set the base virtual address
Matt LaPlante4b3f6862006-10-03 22:21:02 +0200648 of the consistent memory pool. This pool of virtual
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000649 memory is used to make consistent memory allocations.
650
651config CONSISTENT_START
652 hex "Base virtual address of consistent memory pool" if CONSISTENT_START_BOOL
Scott Woodccf0d682007-07-16 11:28:18 -0500653 default "0xfd000000" if (NOT_COHERENT_CACHE && 8xx)
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000654 default "0xff100000" if NOT_COHERENT_CACHE
655
656config CONSISTENT_SIZE_BOOL
657 bool "Set custom consistent memory pool size"
658 depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
659 help
Matt LaPlante4b3f6862006-10-03 22:21:02 +0200660 This option allows you to set the size of the
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000661 consistent memory pool. This pool of virtual memory
662 is used to make consistent memory allocations.
663
664config CONSISTENT_SIZE
665 hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
666 default "0x00200000" if NOT_COHERENT_CACHE
667
668config BOOT_LOAD_BOOL
669 bool "Set the boot link/load address"
670 depends on ADVANCED_OPTIONS && !PPC_MULTIPLATFORM
671 help
672 This option allows you to set the initial load address of the zImage
673 or zImage.initrd file. This can be useful if you are on a board
674 which has a small amount of memory.
675
676 Say N here unless you know what you are doing.
677
678config BOOT_LOAD
679 hex "Link/load address for booting" if BOOT_LOAD_BOOL
680 default "0x00400000" if 40x || 8xx || 8260
681 default "0x01000000" if 44x
682 default "0x00800000"
683
684config PIN_TLB
685 bool "Pinned Kernel TLBs (860 ONLY)"
686 depends on ADVANCED_OPTIONS && 8xx
687endmenu
688
Stephen Rothwellcabb5582005-09-30 16:16:52 +1000689if PPC64
690config KERNEL_START
691 hex
Stephen Rothwelleeb2d212005-09-30 17:24:15 +1000692 default "0xc000000000000000"
Stephen Rothwellcabb5582005-09-30 16:16:52 +1000693endif
694
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000695source "net/Kconfig"
696
697source "drivers/Kconfig"
698
699source "fs/Kconfig"
700
701# XXX source "arch/ppc/8xx_io/Kconfig"
702
703# XXX source "arch/ppc/8260_io/Kconfig"
704
Li Yang98658532006-10-03 23:10:46 -0500705source "arch/powerpc/sysdev/qe_lib/Kconfig"
706
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000707source "lib/Kconfig"
708
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000709source "arch/powerpc/Kconfig.debug"
710
711source "security/Kconfig"
712
713config KEYS_COMPAT
714 bool
715 depends on COMPAT && KEYS
716 default y
717
718source "crypto/Kconfig"
Domen Puncer6f668282007-09-21 00:00:11 +1000719
720config PPC_CLOCK
721 bool
722 default n
Sylvain Munaut1088a202007-09-16 20:53:25 +1000723
724config PPC_LIB_RHEAP
725 bool
726