blob: 4eecaaa54451f6c71993d6a7c593791a0db806b8 [file] [log] [blame]
Arnd Bergmanna0ae9c72007-06-13 02:30:17 +10001source "arch/powerpc/platforms/Kconfig.cputype"
Johannes Berg17e638b2007-03-19 11:53:53 +01002
Paul Mackerras14cf11a2005-09-26 16:04:21 +10003config PPC32
4 bool
5 default y if !PPC64
6
kerstin jonsson234a71a2010-10-22 00:17:55 +00007config 32BIT
8 bool
9 default y if PPC32
10
Paul Mackerras14cf11a2005-09-26 16:04:21 +100011config 64BIT
12 bool
13 default y if PPC64
14
Stephen Rothwell2578bfa2007-09-21 10:16:20 +100015config WORD_SIZE
16 int
17 default 64 if PPC64
18 default 32 if !PPC64
19
Jeremy Fitzhardinge600715d2008-09-11 01:31:45 -070020config ARCH_PHYS_ADDR_T_64BIT
21 def_bool PPC64 || PHYS_64BIT
22
FUJITA Tomonori787d44c2010-10-01 11:12:54 +000023config ARCH_DMA_ADDR_T_64BIT
24 def_bool ARCH_PHYS_ADDR_T_64BIT
25
Paul Mackerras14cf11a2005-09-26 16:04:21 +100026config MMU
27 bool
28 default y
29
Tony Breedsaa3be5f2007-09-21 13:26:02 +100030config GENERIC_CMOS_UPDATE
31 def_bool y
32
Tony Breeds4a4cfe32007-09-22 07:35:52 +100033config GENERIC_TIME_VSYSCALL
34 def_bool y
35
Tony Breedsd831d0b2007-09-21 13:26:03 +100036config GENERIC_CLOCKEVENTS
37 def_bool y
38
Tejun Heoc2a7e812009-08-14 15:00:53 +090039config HAVE_SETUP_PER_CPU_AREA
Tejun Heoe74e3962009-03-30 19:07:44 +090040 def_bool PPC64
41
Tejun Heoc2a7e812009-08-14 15:00:53 +090042config NEED_PER_CPU_EMBED_FIRST_CHUNK
travis@sgi.comb32ef632008-01-30 13:32:51 +010043 def_bool PPC64
44
Michael Ellerman551b81f2009-10-13 19:44:44 +000045config NR_IRQS
46 int "Number of virtual interrupt numbers"
Anton Blanchard859aefc2010-01-31 01:14:03 +000047 range 32 32768
Michael Ellerman551b81f2009-10-13 19:44:44 +000048 default "512"
49 help
50 This defines the number of virtual interrupt numbers the kernel
51 can manage. Virtual interrupt numbers are what you see in
52 /proc/interrupts. If you configure your system to have too few,
53 drivers will fail to load or worse - handle with care.
54
Christoph Hellwigfd3e0bb2008-04-17 14:35:00 +100055config STACKTRACE_SUPPORT
56 bool
57 default y
58
Arnd Bergmann01f4b8b2008-07-11 00:08:18 +100059config HAVE_LATENCYTOP_SUPPORT
60 def_bool y
61
Benjamin Herrenschmidt945feb12008-04-17 14:35:01 +100062config TRACE_IRQFLAGS_SUPPORT
63 bool
Benjamin Herrenschmidt945feb12008-04-17 14:35:01 +100064 default y
65
66config LOCKDEP_SUPPORT
67 bool
68 default y
69
Paul Mackerras14cf11a2005-09-26 16:04:21 +100070config RWSEM_GENERIC_SPINLOCK
71 bool
72
73config RWSEM_XCHGADD_ALGORITHM
74 bool
75 default y
76
Nick Piggin95c354f2008-01-30 13:31:20 +010077config GENERIC_LOCKBREAK
78 bool
79 default y
80 depends on SMP && PREEMPT
81
David Howellsf0d1b0b2006-12-08 02:37:49 -080082config ARCH_HAS_ILOG2_U32
83 bool
David Howellsef55d532006-12-08 02:37:53 -080084 default y
David Howellsf0d1b0b2006-12-08 02:37:49 -080085
86config ARCH_HAS_ILOG2_U64
87 bool
David Howellsef55d532006-12-08 02:37:53 -080088 default y if 64BIT
David Howellsf0d1b0b2006-12-08 02:37:49 -080089
Deepthi Dharwar771dae82011-11-30 02:46:31 +000090config ARCH_HAS_CPU_IDLE_WAIT
91 bool
92 default y
93
Akinobu Mitae779b2f2006-03-26 01:39:33 -080094config GENERIC_HWEIGHT
95 bool
96 default y
97
Anton Vorontsovb7ce3412008-04-11 23:06:36 +100098config GENERIC_GPIO
99 bool
100 help
101 Generic GPIO API support
102
Stephen Rothwellf057eac2007-07-15 23:40:05 -0700103config ARCH_NO_VIRT_TO_BUS
104 def_bool PPC64
105
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000106config PPC
107 bool
108 default y
Stephen Rothwell10f85f42010-06-29 12:43:34 +1000109 select OF
Stephen Neuendorffere6ce1322010-11-18 15:54:56 -0800110 select OF_EARLY_FLATTREE
Steven Rostedt2b79d692009-01-06 18:49:17 +0000111 select HAVE_FTRACE_MCOUNT_RECORD
112 select HAVE_DYNAMIC_FTRACE
Steven Rostedt606576c2008-10-06 19:06:12 -0400113 select HAVE_FUNCTION_TRACER
Steven Rostedt60ce8f72009-02-11 20:06:43 -0500114 select HAVE_FUNCTION_GRAPH_TRACER
Michael Buesch7444a722008-07-25 01:46:11 -0700115 select ARCH_WANT_OPTIONAL_GPIOLIB
Sam Ravnborgec7748b2008-02-09 10:46:40 +0100116 select HAVE_IDE
Benjamin Herrenschmidta1f242f2008-07-23 21:27:08 -0700117 select HAVE_IOREMAP_PROT
Johannes Berg58340a02008-07-25 01:45:33 -0700118 select HAVE_EFFICIENT_UNALIGNED_ACCESS
Mathieu Desnoyers3f550092008-02-02 15:10:35 -0500119 select HAVE_KPROBES
Jason Wessel17ce4522008-07-23 11:30:15 -0500120 select HAVE_ARCH_KGDB
Ananth N Mavinakayanahalli9edddaa2008-03-04 14:28:37 -0800121 select HAVE_KRETPROBES
Roland McGrathdec2b0d2008-07-27 16:53:20 +1000122 select HAVE_ARCH_TRACEHOOK
Yinghai Lu95f72d12010-07-12 14:36:09 +1000123 select HAVE_MEMBLOCK
Tejun Heo1d7cfe12011-12-08 10:22:08 -0800124 select HAVE_MEMBLOCK_NODE_MAP
FUJITA Tomonori46bab4e2009-08-04 19:08:26 +0000125 select HAVE_DMA_ATTRS
FUJITA Tomonori80d3e8a2009-08-04 19:08:28 +0000126 select HAVE_DMA_API_DEBUG
Jens Axboeb7d7a242008-06-26 11:22:13 +0200127 select USE_GENERIC_SMP_HELPERS if SMP
Steven Rostedt4e491d12008-05-14 23:49:44 -0400128 select HAVE_OPROFILE
Benjamin Herrenschmidtee6a0932009-01-14 14:14:00 +0100129 select HAVE_SYSCALL_WRAPPERS if PPC64
Paul Mackerrasc2e95c62009-06-12 21:10:41 +0000130 select GENERIC_ATOMIC64 if PPC32
Peter Zijlstrae360adb2010-10-14 14:01:34 +0800131 select HAVE_IRQ_WORK
Ingo Molnarcdd6c482009-09-21 12:02:48 +0200132 select HAVE_PERF_EVENTS
Mahesh Salgaonkar359e4282010-04-07 18:10:20 +1000133 select HAVE_REGS_AND_STACK_ACCESS_API
K.Prasad5aae8a52010-06-15 11:35:19 +0530134 select HAVE_HW_BREAKPOINT if PERF_EVENTS && PPC_BOOK3S_64
Thomas Gleixner26043622011-01-19 20:39:39 +0100135 select HAVE_GENERIC_HARDIRQS
136 select HAVE_SPARSE_IRQ
Grant Likelyad5b7f132012-01-30 08:02:19 +0000137 select SPARSE_IRQ
Thomas Gleixner26043622011-01-19 20:39:39 +0100138 select IRQ_PER_CPU
Thomas Gleixner433c9c62011-03-25 17:04:59 +0100139 select GENERIC_IRQ_SHOW
140 select GENERIC_IRQ_SHOW_LEVEL
Thomas Gleixnere8d2c472011-10-05 02:30:51 +0000141 select IRQ_FORCED_THREADING
Peter Zijlstra26723912011-05-24 17:12:00 -0700142 select HAVE_RCU_TABLE_FREE if SMP
Ian Munsie02424d82011-02-02 17:27:24 +0000143 select HAVE_SYSCALL_TRACEPOINTS
David S. Miller368940d2011-07-21 23:26:13 -0700144 select HAVE_BPF_JIT if (PPC64 && NET)
Michael Ellermanac5f89c2011-06-29 19:16:59 +0000145 select HAVE_ARCH_JUMP_LABEL
Huang Yingdf013ff2011-07-13 13:14:22 +0800146 select ARCH_HAVE_NMI_SAFE_CMPXCHG
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000147
148config EARLY_PRINTK
149 bool
Benjamin Herrenschmidt51d30822005-11-23 17:57:25 +1100150 default y
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000151
152config COMPAT
153 bool
154 default y if PPC64
Roland McGrath01e31db2008-01-02 17:03:11 -0800155 select COMPAT_BINFMT_ELF
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000156
157config SYSVIPC_COMPAT
158 bool
159 depends on COMPAT && SYSVIPC
160 default y
161
162# All PPC32s use generic nvram driver through ppc_md
163config GENERIC_NVRAM
164 bool
165 default y if PPC32
166
Ingo Molnarae1e9132008-11-11 09:05:16 +0100167config SCHED_OMIT_FRAME_POINTER
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000168 bool
169 default y
170
171config ARCH_MAY_HAVE_PC_FDC
172 bool
Stephen Rothwellbed59272007-03-04 17:04:44 +1100173 default !PPC_PSERIES || PCI
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000174
Kumar Gala08264cb2006-01-10 21:43:56 -0600175config PPC_OF
176 def_bool y
177
178config PPC_UDBG_16550
179 bool
180 default n
181
Kumar Gala08264cb2006-01-10 21:43:56 -0600182config GENERIC_TBSYNC
183 bool
184 default y if PPC32 && SMP
185 default n
186
Al Viroe65e1fc2006-09-12 03:04:40 -0400187config AUDIT_ARCH
188 bool
189 default y
190
Jeremy Fitzhardinge73c9cea2006-12-08 03:30:41 -0800191config GENERIC_BUG
192 bool
193 default y
194 depends on BUG
195
Johannes Bergb3028872007-03-20 05:18:02 +1100196config SYS_SUPPORTS_APM_EMULATION
Kumar Gala58da10b2007-05-23 09:51:46 -0500197 default y if PMAC_APM_EMU
Johannes Bergb3028872007-03-20 05:18:02 +1100198 bool
199
David Gibson6c5b59b2011-04-14 18:29:16 +0000200config EPAPR_BOOT
201 bool
202 help
203 Used to allow a board to specify it wants an ePAPR compliant wrapper.
204 default n
205
Kumar Galaf4fc4a52006-01-16 10:53:22 -0600206config DEFAULT_UIMAGE
207 bool
208 help
209 Used to allow a board to specify it wants a uImage built by default
210 default n
211
Scott Woodb09c1642008-01-17 16:31:40 -0600212config REDBOOT
213 bool
214
Johannes Berg801e4062007-12-08 02:12:39 +0100215config ARCH_HIBERNATION_POSSIBLE
216 bool
Johannes Berg543b9fd2007-05-03 22:31:38 +1000217 default y
218
Johannes Bergf4cb5702007-12-08 02:14:00 +0100219config ARCH_SUSPEND_POSSIBLE
220 def_bool y
Anton Vorontsov4ffd6952009-09-16 01:43:57 +0400221 depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx || \
Kumar Galae5462d12011-04-08 04:20:54 -0500222 (PPC_85xx && !SMP) || PPC_86xx || PPC_PSERIES || 44x || 40x
Johannes Bergf4cb5702007-12-08 02:14:00 +0100223
Benjamin Herrenschmidt4c75a6f2006-11-11 17:24:53 +1100224config PPC_DCR_NATIVE
225 bool
226 default n
227
228config PPC_DCR_MMIO
229 bool
230 default n
231
232config PPC_DCR
233 bool
234 depends on PPC_DCR_NATIVE || PPC_DCR_MMIO
235 default y
236
Benjamin Herrenschmidt4c9d2802006-11-11 17:25:08 +1100237config PPC_OF_PLATFORM_PCI
238 bool
Stephen Rothwell373a6da2007-12-21 15:37:07 +1100239 depends on PCI
Benjamin Herrenschmidt4c9d2802006-11-11 17:25:08 +1100240 depends on PPC64 # not supported on 32 bits yet
241 default n
242
Akinobu Mita6a11f752009-03-31 15:23:17 -0700243config ARCH_SUPPORTS_DEBUG_PAGEALLOC
244 def_bool y
245
Dave Kleikamp172ae2e2010-02-08 11:50:57 +0000246config PPC_ADV_DEBUG_REGS
247 bool
248 depends on 40x || BOOKE
249 default y
250
251config PPC_ADV_DEBUG_IACS
252 int
253 depends on PPC_ADV_DEBUG_REGS
254 default 4 if 44x
255 default 2
256
257config PPC_ADV_DEBUG_DACS
258 int
259 depends on PPC_ADV_DEBUG_REGS
260 default 2
261
262config PPC_ADV_DEBUG_DVCS
263 int
264 depends on PPC_ADV_DEBUG_REGS
265 default 2 if 44x
266 default 0
267
268config PPC_ADV_DEBUG_DAC_RANGE
269 bool
270 depends on PPC_ADV_DEBUG_REGS && 44x
271 default y
272
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000273source "init/Kconfig"
274
Matt Helsleydc52ddc2008-10-18 20:27:21 -0700275source "kernel/Kconfig.freezer"
276
Benjamin Herrenschmidta2d2e1e2007-12-21 15:39:24 +1100277source "arch/powerpc/sysdev/Kconfig"
Kumar Gala4330f5d2007-03-16 09:32:17 -0500278source "arch/powerpc/platforms/Kconfig"
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000279
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000280menu "Kernel options"
281
282config HIGHMEM
283 bool "High memory support"
284 depends on PPC32
285
Tony Breeds1ad74992007-09-21 13:26:03 +1000286source kernel/time/Kconfig
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000287source kernel/Kconfig.hz
288source kernel/Kconfig.preempt
289source "fs/Kconfig.binfmt"
290
Mel Gormanba72cb82007-11-28 16:21:13 -0800291config HUGETLB_PAGE_SIZE_VARIABLE
292 bool
293 depends on HUGETLB_PAGE
294 default y
295
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000296config MATH_EMULATION
297 bool "Math emulation"
Kumar Gala4d527192007-01-26 00:23:34 -0600298 depends on 4xx || 8xx || E200 || PPC_MPC832x || E500
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000299 ---help---
300 Some PowerPC chips designed for embedded applications do not have
301 a floating-point unit and therefore do not implement the
302 floating-point instructions in the PowerPC instruction set. If you
303 say Y here, the kernel will include code to emulate a floating-point
304 unit, which will allow programs that use floating-point
305 instructions to run.
306
Scott Wood5dd57a12007-09-18 15:29:35 -0500307config 8XX_MINIMAL_FPEMU
308 bool "Minimal math emulation for 8xx"
309 depends on 8xx && !MATH_EMULATION
310 help
311 Older arch/ppc kernels still emulated a few floating point
312 instructions such as load and store, even when full math
313 emulation is disabled. Say "Y" here if you want to preserve
314 this behavior.
315
316 It is recommended that you build a soft-float userspace instead.
317
FUJITA Tomonorifb3475e2008-02-04 22:28:08 -0800318config IOMMU_HELPER
319 def_bool PPC64
320
Becky Bruceec3cf2e2009-05-14 12:42:28 +0000321config SWIOTLB
322 bool "SWIOTLB support"
323 default n
324 select IOMMU_HELPER
325 ---help---
326 Support for IO bounce buffering for systems without an IOMMU.
327 This allows us to DMA to the full physical address space on
328 platforms where the size of a physical address is larger
329 than the bus address. Not all platforms support this.
330
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000331config HOTPLUG_CPU
332 bool "Support for enabling/disabling CPUs"
Benjamin Herrenschmidt344eb012011-09-19 17:44:54 +0000333 depends on SMP && HOTPLUG && EXPERIMENTAL && (PPC_PSERIES || PPC_PMAC || PPC_POWERNV)
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000334 ---help---
335 Say Y here to be able to disable and re-enable individual
336 CPUs at runtime on SMP machines.
337
338 Say N if you are unsure.
339
Nathan Fontenot12633e82009-11-25 17:23:25 +0000340config ARCH_CPU_PROBE_RELEASE
341 def_bool y
342 depends on HOTPLUG_CPU
343
Yasunori Gotocc576372006-06-29 02:24:27 -0700344config ARCH_ENABLE_MEMORY_HOTPLUG
345 def_bool y
346
Badari Pulavartya99824f2008-02-05 00:10:18 -0800347config ARCH_HAS_WALK_MEMORY
348 def_bool y
349
Badari Pulavarty14824712008-02-05 00:10:17 -0800350config ARCH_ENABLE_MEMORY_HOTREMOVE
351 def_bool y
352
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000353config KEXEC
354 bool "kexec system call (EXPERIMENTAL)"
Suzuki Poulosebbc24a22011-11-14 16:43:50 +0000355 depends on (PPC_BOOK3S || FSL_BOOKE || (44x && !SMP && !PPC_47x)) && EXPERIMENTAL
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000356 help
357 kexec is a system call that implements the ability to shutdown your
358 current kernel, and to start another kernel. It is like a reboot
Matt LaPlante1f1332f2006-06-29 01:32:47 -0400359 but it is independent of the system firmware. And like a reboot
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000360 you can start any kernel with it, not just Linux.
361
Matt LaPlante1f1332f2006-06-29 01:32:47 -0400362 The name comes from the similarity to the exec system call.
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000363
364 It is an ongoing process to be certain the hardware in a machine
365 is properly shutdown, so do not be surprised if this code does not
366 initially work for you. It may help to enable device hotplugging
367 support. As of this writing the exact hardware interface is
368 strongly in flux, so no good recommendation can be made.
369
Haren Mynenie8625d462006-01-14 13:48:25 -0800370config CRASH_DUMP
Bernhard Walle3420b5d2008-06-27 03:02:15 +1000371 bool "Build a kdump crash kernel"
Suzuki Poulose5b2e4782011-12-14 22:59:37 +0000372 depends on PPC64 || 6xx || FSL_BOOKE || (44x && !SMP && !PPC_47x)
373 select RELOCATABLE if PPC64 || 44x
Suzuki Poulose0f890c82011-12-14 22:57:15 +0000374 select DYNAMIC_MEMSTART if FSL_BOOKE
Haren Mynenie8625d462006-01-14 13:48:25 -0800375 help
376 Build a kernel suitable for use as a kdump capture kernel.
Mohan Kumar M54622f12008-10-21 17:38:10 +0000377 The same kernel binary can be used as production kernel and dump
378 capture kernel.
Haren Mynenie8625d462006-01-14 13:48:25 -0800379
Mahesh Salgaonkareb39c882012-02-16 01:14:22 +0000380config FA_DUMP
381 bool "Firmware-assisted dump"
382 depends on PPC64 && PPC_RTAS && CRASH_DUMP
383 help
384 A robust mechanism to get reliable kernel crash dump with
385 assistance from firmware. This approach does not use kexec,
386 instead firmware assists in booting the kdump kernel
387 while preserving memory contents. Firmware-assisted dump
388 is meant to be a kdump replacement offering robustness and
389 speed not possible without system firmware assistance.
390
391 If unsure, say "N"
392
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000393config IRQ_ALL_CPUS
394 bool "Distribute interrupts on all CPUs by default"
395 depends on SMP && !MV64360
396 help
397 This option gives the kernel permission to distribute IRQs across
398 multiple CPUs. Saying N here will route all IRQs to the first
399 CPU. Generally saying Y is safe, although some problems have been
400 reported with SMP Power Macintoshes with this option enabled.
401
Andy Whitcroftffa27b62005-10-28 17:46:58 -0700402config NUMA
403 bool "NUMA support"
404 depends on PPC64
405 default y if SMP && PPC_PSERIES
406
Yasunori Gotoc80d79d2006-04-10 22:53:53 -0700407config NODES_SHIFT
408 int
Anton Blanchardea55bf22009-09-21 19:56:43 +0000409 default "8" if PPC64
Yasunori Gotoc80d79d2006-04-10 22:53:53 -0700410 default "4"
411 depends on NEED_MULTIPLE_NODES
412
Anton Blanchardea55bf22009-09-21 19:56:43 +0000413config MAX_ACTIVE_REGIONS
414 int
415 default "256" if PPC64
416 default "32"
417
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000418config ARCH_SELECT_MEMORY_MODEL
419 def_bool y
420 depends on PPC64
421
422config ARCH_FLATMEM_ENABLE
Andy Whitcroft9100b202005-11-29 19:20:55 +0000423 def_bool y
424 depends on (PPC64 && !NUMA) || PPC32
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000425
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000426config ARCH_SPARSEMEM_ENABLE
427 def_bool y
Andy Whitcroft9100b202005-11-29 19:20:55 +0000428 depends on PPC64
Andy Whitcroftd29eff72007-10-16 01:24:17 -0700429 select SPARSEMEM_VMEMMAP_ENABLE
Anton Blanchard45fb6ce2005-11-11 14:22:35 +1100430
431config ARCH_SPARSEMEM_DEFAULT
432 def_bool y
Benjamin Herrenschmidt78bde532007-02-13 11:46:06 +1100433 depends on (SMP && PPC_PSERIES) || PPC_PS3
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000434
Benjamin Herrenschmidt5a1eb5c2009-10-30 15:03:54 +1100435config SYS_SUPPORTS_HUGETLBFS
Becky Bruce41151e72011-06-28 09:54:48 +0000436 bool
Benjamin Herrenschmidt5a1eb5c2009-10-30 15:03:54 +1100437
Mel Gormanc67c3cb2006-09-27 01:49:49 -0700438source "mm/Kconfig"
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000439
Mike Kravetz7e9191d2005-11-07 09:39:48 -0800440config ARCH_MEMORY_PROBE
441 def_bool y
442 depends on MEMORY_HOTPLUG
443
Andy Whitcroft75167952006-10-21 10:24:14 -0700444# Some NUMA nodes have memory ranges that span
445# other nodes. Even though a pfn is valid and
446# between a node's start and end pfns, it may not
447# reside on that node. See memmap_init_zone()
448# for details.
449config NODES_SPAN_OTHER_NODES
450 def_bool y
451 depends on NEED_MULTIPLE_NODES
452
Benjamin Herrenschmidt16c2d472007-05-08 16:27:28 +1000453config PPC_HAS_HASH_64K
454 bool
455 depends on PPC64
456 default n
457
Yuri Tikhonove1240122009-01-29 01:40:44 +0000458config STDBINUTILS
459 bool "Using standard binutils settings"
460 depends on 44x
461 default y
462 help
463 Turning this option off allows you to select 256KB PAGE_SIZE on 44x.
464 Note, that kernel will be able to run only those applications,
465 which had been compiled using binutils later than 2.17.50.0.3 with
466 '-zmax-page-size' set to 256K (the default is 64K). Or, if using
467 the older binutils, you can patch them with a trivial patch, which
468 changes the ELF_MAXPAGESIZE definition from 0x10000 to 0x40000.
469
Ilya Yanokca9153a2008-12-11 04:55:41 +0300470choice
471 prompt "Page size"
472 default PPC_4K_PAGES
Benjamin Herrenschmidt3c726f82005-11-07 11:06:55 +1100473 help
Ilya Yanokca9153a2008-12-11 04:55:41 +0300474 Select the kernel logical page size. Increasing the page size
475 will reduce software overhead at each page boundary, allow
476 hardware prefetch mechanisms to be more effective, and allow
477 larger dma transfers increasing IO efficiency and reducing
478 overhead. However the utilization of memory will increase.
479 For example, each cached file will using a multiple of the
480 page size to hold its contents and the difference between the
481 end of file and the end of page is wasted.
482
483 Some dedicated systems, such as software raid serving with
484 accelerated calculations, have shown significant increases.
485
486 If you configure a 64 bit kernel for 64k pages but the
487 processor does not support them, then the kernel will simulate
488 them with 4k pages, loading them on demand, but with the
489 reduced software overhead and larger internal fragmentation.
490 For the 32 bit kernel, a large page option will not be offered
491 unless it is supported by the configured processor.
492
493 If unsure, choose 4K_PAGES.
494
495config PPC_4K_PAGES
496 bool "4k page size"
497
498config PPC_16K_PAGES
499 bool "16k page size" if 44x
500
501config PPC_64K_PAGES
Benjamin Herrenschmidt2d27cfd2009-07-23 23:15:59 +0000502 bool "64k page size" if 44x || PPC_STD_MMU_64 || PPC_BOOK3E_64
Ilya Yanokca9153a2008-12-11 04:55:41 +0300503 select PPC_HAS_HASH_64K if PPC_STD_MMU_64
504
Yuri Tikhonove1240122009-01-29 01:40:44 +0000505config PPC_256K_PAGES
506 bool "256k page size" if 44x
Hugh Dickinsadf213c2009-04-06 11:01:15 +0000507 depends on !STDBINUTILS
Yuri Tikhonove1240122009-01-29 01:40:44 +0000508 help
509 Make the page size 256k.
510
511 As the ELF standard only requires alignment to support page
512 sizes up to 64k, you will need to compile all of your user
513 space applications with a non-standard binutils settings
514 (see the STDBINUTILS description for details).
515
516 Say N unless you know what you are doing.
517
Ilya Yanokca9153a2008-12-11 04:55:41 +0300518endchoice
Benjamin Herrenschmidt3c726f82005-11-07 11:06:55 +1100519
Stephen Rothwell53bcddb2008-04-11 11:11:56 +1000520config FORCE_MAX_ZONEORDER
521 int "Maximum zone order"
Benjamin Herrenschmidt066c4b82009-07-21 15:25:53 +0000522 range 9 64 if PPC64 && PPC_64K_PAGES
523 default "9" if PPC64 && PPC_64K_PAGES
524 range 13 64 if PPC64 && !PPC_64K_PAGES
525 default "13" if PPC64 && !PPC_64K_PAGES
526 range 9 64 if PPC32 && PPC_16K_PAGES
527 default "9" if PPC32 && PPC_16K_PAGES
528 range 7 64 if PPC32 && PPC_64K_PAGES
529 default "7" if PPC32 && PPC_64K_PAGES
530 range 5 64 if PPC32 && PPC_256K_PAGES
531 default "5" if PPC32 && PPC_256K_PAGES
Johannes Bergebe40c52008-09-24 04:29:08 +0000532 range 11 64
Stephen Rothwell53bcddb2008-04-11 11:11:56 +1000533 default "11"
534 help
535 The kernel memory allocator divides physically contiguous memory
536 blocks into "zones", where each zone is a power of two number of
537 pages. This option selects the largest power of two that the kernel
538 keeps in the memory allocator. If you need to allocate very large
539 blocks of physically contiguous memory, then you may need to
540 increase this value.
541
542 This config option is actually maximum order plus one. For example,
543 a value of 11 means that the largest free memory block is 2^10 pages.
544
545 The page size is not necessarily 4KB. For example, on 64-bit
546 systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES. Keep
547 this in mind when choosing a value for this option.
548
Paul Mackerrasfa282372008-01-24 08:35:13 +1100549config PPC_SUBPAGE_PROT
550 bool "Support setting protections for 4k subpages"
Ilya Yanokca9153a2008-12-11 04:55:41 +0300551 depends on PPC_STD_MMU_64 && PPC_64K_PAGES
Paul Mackerrasfa282372008-01-24 08:35:13 +1100552 help
553 This option adds support for a system call to allow user programs
554 to set access permissions (read/write, readonly, or no access)
555 on the 4k subpages of each 64k page.
556
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000557config SCHED_SMT
558 bool "SMT (Hyperthreading) scheduler support"
559 depends on PPC64 && SMP
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000560 help
561 SMT scheduler support improves the CPU scheduler's decision making
562 when dealing with POWER5 cpus at a cost of slightly increased
563 overhead in some places. If unsure say N here.
564
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000565config CMDLINE_BOOL
566 bool "Default bootloader kernel arguments"
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000567
568config CMDLINE
569 string "Initial kernel command string"
570 depends on CMDLINE_BOOL
571 default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
572 help
573 On some platforms, there is currently no way for the boot loader to
574 pass arguments to the kernel. For these platforms, you can supply
575 some command-line options at build time by entering them here. In
576 most cases you will need to specify the root device here.
577
Grant Likelyc356aa42008-07-09 09:41:52 -0600578config EXTRA_TARGETS
579 string "Additional default image types"
580 help
581 List additional targets to be built by the bootwrapper here (separated
582 by spaces). This is useful for targets that depend of device tree
583 files in the .dts directory.
584
585 Targets in this list will be build as part of the default build
586 target, or when the user does a 'make zImage' or a
587 'make zImage.initrd'.
588
589 If unsure, leave blank
590
Johannes Bergb28f5082008-01-15 23:17:00 -0500591config ARCH_WANTS_FREEZER_CONTROL
592 def_bool y
593 depends on ADB_PMU
594
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000595source kernel/power/Kconfig
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000596
597config SECCOMP
598 bool "Enable seccomp to safely compute untrusted bytecode"
599 depends on PROC_FS
600 default y
601 help
602 This kernel feature is useful for number crunching applications
603 that may need to compute untrusted bytecode during their
604 execution. By using pipes or other transports made available to
605 the process as file descriptors supporting the read/write
606 syscalls, it's possible to isolate those applications in
607 their own address space using seccomp. Once seccomp is
608 enabled via /proc/<pid>/seccomp, it cannot be disabled
609 and the task is only allowed to execute a few safe syscalls
610 defined by each seccomp mode.
611
612 If unsure, say Y. Only embedded should say N here.
613
614endmenu
615
616config ISA_DMA_API
617 bool
Stephen Rothwell3d066d72012-02-22 14:10:12 +0000618 default PCI
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000619
620menu "Bus options"
621
622config ISA
623 bool "Support for ISA-bus hardware"
624 depends on PPC_PREP || PPC_CHRP
Paul Mackerrasf9bd1702005-10-26 16:47:42 +1000625 select PPC_I8259
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000626 help
627 Find out whether you have ISA slots on your motherboard. ISA is the
628 name of a bus system, i.e. the way the CPU talks to the other stuff
629 inside your box. If you have an Apple machine, say N here; if you
630 have an IBM RS/6000 or pSeries machine or a PReP machine, say Y. If
631 you have an embedded board, consult your board documentation.
632
Christoph Lameter5ac6da62007-02-10 01:43:14 -0800633config ZONE_DMA
634 bool
635 default y
636
FUJITA Tomonoriaf407c62010-03-10 15:23:27 -0800637config NEED_DMA_MAP_STATE
638 def_bool (PPC64 || NOT_COHERENT_CACHE)
639
FUJITA Tomonorie32205e2010-05-26 14:44:33 -0700640config NEED_SG_DMA_LENGTH
641 def_bool y
642
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000643config GENERIC_ISA_DMA
644 bool
Anton Vorontsov19274452010-07-15 07:38:16 +0000645 depends on ISA_DMA_API
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000646 default y
647
Paul Mackerras25635c72005-10-26 16:36:55 +1000648config PPC_INDIRECT_PCI
649 bool
650 depends on PCI
Becky Bruce63dafe52006-01-14 16:57:39 -0600651 default y if 40x || 44x
Paul Mackerras25635c72005-10-26 16:36:55 +1000652 default n
653
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000654config EISA
655 bool
656
657config SBUS
658 bool
659
Kumar Gala08264cb2006-01-10 21:43:56 -0600660config FSL_SOC
661 bool
holt@sgi.comb489da82011-08-16 17:32:24 +0000662 select HAVE_CAN_FLEXCAN if NET && CAN
663 select PPC_CLOCK if CAN_FLEXCAN
Kumar Gala08264cb2006-01-10 21:43:56 -0600664
Roy Zang55c44992007-07-10 18:44:34 +0800665config FSL_PCI
666 bool
667 select PPC_INDIRECT_PCI
Kumar Galad0839112009-01-28 13:25:29 -0600668 select PCI_QUIRKS
Roy Zang55c44992007-07-10 18:44:34 +0800669
Anton Vorontsov4ffd6952009-09-16 01:43:57 +0400670config FSL_PMC
671 bool
672 default y
673 depends on SUSPEND && (PPC_85xx || PPC_86xx)
674 help
675 Freescale MPC85xx/MPC86xx power management controller support
676 (suspend/resume). For MPC83xx see platforms/83xx/suspend.c
677
Victor Gallardod164f6d2010-10-08 10:25:27 +0000678config PPC4xx_CPM
679 bool
680 default y
681 depends on SUSPEND && (44x || 40x)
682 help
683 PPC4xx Clock Power Management (CPM) support (suspend/resume).
684 It also enables support for two different idle states (idle-wait
685 and idle-doze).
686
Stefan Roese2a706912008-03-26 22:39:50 +1100687config 4xx_SOC
688 bool
689
Anton Vorontsovacaa7aa2008-04-11 21:03:40 +0400690config FSL_LBC
Roy Zang3ab8f2a2010-10-18 15:22:31 +0800691 bool "Freescale Local Bus support"
692 depends on FSL_SOC
Anton Vorontsovacaa7aa2008-04-11 21:03:40 +0400693 help
Roy Zang3ab8f2a2010-10-18 15:22:31 +0800694 Enables reporting of errors from the Freescale local bus
695 controller. Also contains some common code used by
696 drivers for specific local bus peripherals.
Anton Vorontsovacaa7aa2008-04-11 21:03:40 +0400697
Prabhakar Kushwahaa20cbde2011-12-27 17:39:13 +0530698config FSL_IFC
699 bool
700 depends on FSL_SOC
701
Anton Vorontsov83ff9dc2008-05-23 20:38:54 +0400702config FSL_GTM
703 bool
704 depends on PPC_83xx || QUICC_ENGINE || CPM2
705 help
706 Freescale General-purpose Timers support
707
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000708# Yes MCA RS/6000s exist but Linux-PPC does not currently support any
709config MCA
710 bool
711
John Rigbyb5005632008-06-26 11:07:56 -0600712# Platforms that what PCI turned unconditionally just do select PCI
713# in their config node. Platforms that want to choose at config
714# time should select PPC_PCI_CHOICE
715config PPC_PCI_CHOICE
716 bool
717
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000718config PCI
John Rigbyb5005632008-06-26 11:07:56 -0600719 bool "PCI support" if PPC_PCI_CHOICE
720 default y if !40x && !CPM2 && !8xx && !PPC_83xx \
Albert Herranzbcc48592009-12-12 06:31:39 +0000721 && !PPC_85xx && !PPC_86xx && !GAMECUBE_COMMON
David Gibsonf21f49e2007-06-13 14:52:54 +1000722 default PCI_PERMEDIA if !4xx && !CPM2 && !8xx
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000723 default PCI_QSPAN if !4xx && !CPM2 && 8xx
Michael Ellermandf87ef52007-05-08 12:58:34 +1000724 select ARCH_SUPPORTS_MSI
Michael S. Tsirkin335b8cf2011-11-24 21:06:41 +0200725 select GENERIC_PCI_IOMAP
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000726 help
727 Find out whether your system includes a PCI bus. PCI is the name of
728 a bus system, i.e. the way the CPU talks to the other stuff inside
729 your box. If you say Y here, the kernel will include drivers and
730 infrastructure code to support PCI bus devices.
731
732config PCI_DOMAINS
Matthew Wilcox36e23592007-07-10 10:54:40 -0600733 def_bool PCI
734
735config PCI_SYSCALL
736 def_bool PCI
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000737
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000738config 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
Andrew Morton4a3ecc62006-06-01 20:36:04 -0700753 bool "Enable workaround for MPC826x erratum PCI 9"
Scott Woode00c5492007-09-14 15:41:56 -0500754 depends on PCI_8260 && !8272
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000755 default y
756
Jake Moilanenbb53bb32006-06-07 16:05:46 -0500757source "drivers/pci/pcie/Kconfig"
758
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000759source "drivers/pci/Kconfig"
760
761source "drivers/pcmcia/Kconfig"
762
763source "drivers/pci/hotplug/Kconfig"
764
Zhang Weif1f389d2008-04-18 13:33:39 -0700765config HAS_RAPIDIO
766 bool
767 default n
768
769config RAPIDIO
770 bool "RapidIO support"
Alexandre Bounine388b78a2011-03-23 16:43:03 -0700771 depends on HAS_RAPIDIO || PCI
Zhang Weif1f389d2008-04-18 13:33:39 -0700772 help
773 If you say Y here, the kernel will include drivers and
774 infrastructure code to support RapidIO interconnect devices.
775
Alexandre Bounine388b78a2011-03-23 16:43:03 -0700776config FSL_RIO
777 bool "Freescale Embedded SRIO Controller support"
778 depends on RAPIDIO && HAS_RAPIDIO
779 default "n"
780 ---help---
781 Include support for RapidIO controller on Freescale embedded
782 processors (MPC8548, MPC8641, etc).
783
Zhang Weif1f389d2008-04-18 13:33:39 -0700784source "drivers/rapidio/Kconfig"
785
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000786endmenu
787
Suzuki Poulose0f890c82011-12-14 22:57:15 +0000788config NONSTATIC_KERNEL
789 bool
790 default n
791
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000792menu "Advanced setup"
793 depends on PPC32
794
795config ADVANCED_OPTIONS
796 bool "Prompt for advanced kernel configuration options"
797 help
798 This option will enable prompting for a variety of advanced kernel
799 configuration options. These options can cause the kernel to not
800 work if they are set incorrectly, but can be used to optimize certain
801 aspects of kernel memory management.
802
803 Unless you know what you are doing, say N here.
804
805comment "Default settings for advanced configuration options are used"
806 depends on !ADVANCED_OPTIONS
807
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000808config LOWMEM_SIZE_BOOL
809 bool "Set maximum low memory"
810 depends on ADVANCED_OPTIONS
811 help
812 This option allows you to set the maximum amount of memory which
813 will be used as "low memory", that is, memory which the kernel can
814 access directly, without having to set up a kernel virtual mapping.
815 This can be useful in optimizing the layout of kernel virtual
816 memory.
817
818 Say N here unless you know what you are doing.
819
820config LOWMEM_SIZE
821 hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
822 default "0x30000000"
823
Trent Piepho96051462008-12-08 19:34:58 -0800824config LOWMEM_CAM_NUM_BOOL
825 bool "Set number of CAMs to use to map low memory"
826 depends on ADVANCED_OPTIONS && FSL_BOOKE
827 help
828 This option allows you to set the maximum number of CAM slots that
829 will be used to map low memory. There are a limited number of slots
830 available and even more limited number that will fit in the L1 MMU.
831 However, using more entries will allow mapping more low memory. This
832 can be useful in optimizing the layout of kernel virtual memory.
833
834 Say N here unless you know what you are doing.
835
836config LOWMEM_CAM_NUM
Josh Boyer9b71dbd2009-03-31 08:05:50 -0400837 depends on FSL_BOOKE
Trent Piepho96051462008-12-08 19:34:58 -0800838 int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL
839 default 3
840
Suzuki Poulose0f890c82011-12-14 22:57:15 +0000841config DYNAMIC_MEMSTART
842 bool "Enable page aligned dynamic load address for kernel (EXPERIMENTAL)"
Suzuki Poulose23913242011-12-14 22:57:57 +0000843 depends on EXPERIMENTAL && ADVANCED_OPTIONS && FLATMEM && (FSL_BOOKE || 44x)
Suzuki Poulose0f890c82011-12-14 22:57:15 +0000844 select NONSTATIC_KERNEL
Kumar Gala37dd2ba2008-04-22 04:22:34 +1000845 help
Suzuki Poulose0f890c82011-12-14 22:57:15 +0000846 This option enables the kernel to be loaded at any page aligned
847 physical address. The kernel creates a mapping from KERNELBASE to
848 the address where the kernel is loaded. The page size here implies
849 the TLB page size of the mapping for kernel on the particular platform.
850 Please refer to the init code for finding the TLB page size.
Kumar Gala37dd2ba2008-04-22 04:22:34 +1000851
Suzuki Poulose0f890c82011-12-14 22:57:15 +0000852 DYNAMIC_MEMSTART is an easy way of implementing pseudo-RELOCATABLE
853 kernel image, where the only restriction is the page aligned kernel
854 load address. When this option is enabled, the compile time physical
855 address CONFIG_PHYSICAL_START is ignored.
Kumar Gala37dd2ba2008-04-22 04:22:34 +1000856
Suzuki Poulose9c5f7d32011-12-14 22:58:12 +0000857 This option is overridden by CONFIG_RELOCATABLE
858
Kumar Gala37dd2ba2008-04-22 04:22:34 +1000859config RELOCATABLE
860 bool "Build a relocatable kernel (EXPERIMENTAL)"
Suzuki Poulose26ecb6c2011-12-14 22:59:24 +0000861 depends on EXPERIMENTAL && ADVANCED_OPTIONS && FLATMEM && 44x
Suzuki Poulose9c5f7d32011-12-14 22:58:12 +0000862 select NONSTATIC_KERNEL
Kumar Gala37dd2ba2008-04-22 04:22:34 +1000863 help
864 This builds a kernel image that is capable of running at the
Suzuki Poulose9c5f7d32011-12-14 22:58:12 +0000865 location the kernel is loaded at, without any alignment restrictions.
866 This feature is a superset of DYNAMIC_MEMSTART and hence overrides it.
Kumar Gala37dd2ba2008-04-22 04:22:34 +1000867
868 One use is for the kexec on panic case where the recovery kernel
869 must live at a different physical address than the primary
870 kernel.
871
872 Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address
873 it has been loaded at and the compile time physical addresses
874 CONFIG_PHYSICAL_START is ignored. However CONFIG_PHYSICAL_START
875 setting can still be useful to bootwrappers that need to know the
Suzuki Poulose9c5f7d32011-12-14 22:58:12 +0000876 load address of the kernel (eg. u-boot/mkimage).
877
878config RELOCATABLE_PPC32
879 def_bool y
880 depends on PPC32 && RELOCATABLE
Kumar Gala37dd2ba2008-04-22 04:22:34 +1000881
882config PAGE_OFFSET_BOOL
883 bool "Set custom page offset address"
884 depends on ADVANCED_OPTIONS
885 help
886 This option allows you to set the kernel virtual address at which
887 the kernel will map low memory. This can be useful in optimizing
888 the virtual memory layout of the system.
889
890 Say N here unless you know what you are doing.
891
892config PAGE_OFFSET
893 hex "Virtual address of memory base" if PAGE_OFFSET_BOOL
894 default "0xc0000000"
895
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000896config KERNEL_START_BOOL
897 bool "Set custom kernel base address"
898 depends on ADVANCED_OPTIONS
899 help
900 This option allows you to set the kernel virtual address at which
Kumar Gala37dd2ba2008-04-22 04:22:34 +1000901 the kernel will be loaded. Normally this should match PAGE_OFFSET
902 however there are times (like kdump) that one might not want them
903 to be the same.
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000904
905 Say N here unless you know what you are doing.
906
907config KERNEL_START
908 hex "Virtual address of kernel base" if KERNEL_START_BOOL
Kumar Gala37dd2ba2008-04-22 04:22:34 +1000909 default PAGE_OFFSET if PAGE_OFFSET_BOOL
Suzuki Poulose0f890c82011-12-14 22:57:15 +0000910 default "0xc2000000" if CRASH_DUMP && !NONSTATIC_KERNEL
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000911 default "0xc0000000"
912
Kumar Gala37dd2ba2008-04-22 04:22:34 +1000913config PHYSICAL_START_BOOL
914 bool "Set physical address where the kernel is loaded"
915 depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE
916 help
917 This gives the physical address where the kernel is loaded.
918
919 Say N here unless you know what you are doing.
920
921config PHYSICAL_START
922 hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL
Suzuki Poulose0f890c82011-12-14 22:57:15 +0000923 default "0x02000000" if PPC_STD_MMU && CRASH_DUMP && !NONSTATIC_KERNEL
Kumar Gala37dd2ba2008-04-22 04:22:34 +1000924 default "0x00000000"
925
926config PHYSICAL_ALIGN
927 hex
Trent Piephoc8f35702008-12-08 19:34:59 -0800928 default "0x04000000" if FSL_BOOKE
Kumar Gala37dd2ba2008-04-22 04:22:34 +1000929 help
930 This value puts the alignment restrictions on physical address
931 where kernel is loaded and run from. Kernel is compiled for an
932 address which meets above alignment restriction.
933
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000934config TASK_SIZE_BOOL
935 bool "Set custom user task size"
936 depends on ADVANCED_OPTIONS
937 help
938 This option allows you to set the amount of virtual address space
939 allocated to user tasks. This can be useful in optimizing the
940 virtual memory layout of the system.
941
942 Say N here unless you know what you are doing.
943
944config TASK_SIZE
945 hex "Size of user task space" if TASK_SIZE_BOOL
Kumar Gala4d9e55102007-10-11 13:40:21 -0500946 default "0x80000000" if PPC_PREP || PPC_8xx
947 default "0xc0000000"
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000948
Benjamin Herrenschmidt84532a02009-05-27 13:33:14 +1000949config CONSISTENT_SIZE_BOOL
950 bool "Set custom consistent memory pool size"
951 depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
952 help
953 This option allows you to set the size of the
954 consistent memory pool. This pool of virtual memory
955 is used to make consistent memory allocations.
956
957config CONSISTENT_SIZE
958 hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
959 default "0x00200000" if NOT_COHERENT_CACHE
960
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000961config PIN_TLB
962 bool "Pinned Kernel TLBs (860 ONLY)"
963 depends on ADVANCED_OPTIONS && 8xx
964endmenu
965
Stephen Rothwellcabb5582005-09-30 16:16:52 +1000966if PPC64
Paul Mackerras549e8152008-08-30 11:43:47 +1000967config RELOCATABLE
968 bool "Build a relocatable kernel"
Suzuki Poulose0f890c82011-12-14 22:57:15 +0000969 select NONSTATIC_KERNEL
Paul Mackerras549e8152008-08-30 11:43:47 +1000970 help
971 This builds a kernel image that is capable of running anywhere
972 in the RMA (real memory area) at any 16k-aligned base address.
973 The kernel is linked as a position-independent executable (PIE)
974 and contains dynamic relocations which are processed early
975 in the bootup process.
976
977 One use is for the kexec on panic case where the recovery kernel
978 must live at a different physical address than the primary
979 kernel.
980
Kumar Gala37dd2ba2008-04-22 04:22:34 +1000981config PAGE_OFFSET
Stephen Rothwellcabb5582005-09-30 16:16:52 +1000982 hex
Stephen Rothwelleeb2d212005-09-30 17:24:15 +1000983 default "0xc000000000000000"
Kumar Gala37dd2ba2008-04-22 04:22:34 +1000984config KERNEL_START
985 hex
Kumar Gala37dd2ba2008-04-22 04:22:34 +1000986 default "0xc000000000000000"
987config PHYSICAL_START
988 hex
Kumar Gala37dd2ba2008-04-22 04:22:34 +1000989 default "0x00000000"
Stephen Rothwellcabb5582005-09-30 16:16:52 +1000990endif
991
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000992source "net/Kconfig"
993
994source "drivers/Kconfig"
995
996source "fs/Kconfig"
997
Li Yang98658532006-10-03 23:10:46 -0500998source "arch/powerpc/sysdev/qe_lib/Kconfig"
999
Paul Mackerras14cf11a2005-09-26 16:04:21 +10001000source "lib/Kconfig"
1001
Paul Mackerras14cf11a2005-09-26 16:04:21 +10001002source "arch/powerpc/Kconfig.debug"
1003
1004source "security/Kconfig"
1005
1006config KEYS_COMPAT
1007 bool
1008 depends on COMPAT && KEYS
1009 default y
1010
1011source "crypto/Kconfig"
Domen Puncer6f668282007-09-21 00:00:11 +10001012
1013config PPC_CLOCK
1014 bool
1015 default n
David Brownell9483a572008-07-23 21:26:48 -07001016 select HAVE_CLK
Sylvain Munaut1088a202007-09-16 20:53:25 +10001017
1018config PPC_LIB_RHEAP
1019 bool
1020
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -05001021source "arch/powerpc/kvm/Kconfig"