blob: 22b0940494bb5016be1fca2a98aa7b75c105487a [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
Tejun Heoc2a7e812009-08-14 15:00:53 +090030config HAVE_SETUP_PER_CPU_AREA
Tejun Heoe74e3962009-03-30 19:07:44 +090031 def_bool PPC64
32
Tejun Heoc2a7e812009-08-14 15:00:53 +090033config NEED_PER_CPU_EMBED_FIRST_CHUNK
travis@sgi.comb32ef632008-01-30 13:32:51 +010034 def_bool PPC64
35
Michael Ellerman551b81f2009-10-13 19:44:44 +000036config NR_IRQS
37 int "Number of virtual interrupt numbers"
Anton Blanchard859aefc2010-01-31 01:14:03 +000038 range 32 32768
Michael Ellerman551b81f2009-10-13 19:44:44 +000039 default "512"
40 help
41 This defines the number of virtual interrupt numbers the kernel
42 can manage. Virtual interrupt numbers are what you see in
43 /proc/interrupts. If you configure your system to have too few,
44 drivers will fail to load or worse - handle with care.
45
Christoph Hellwigfd3e0bb2008-04-17 14:35:00 +100046config STACKTRACE_SUPPORT
47 bool
48 default y
49
Arnd Bergmann01f4b8b2008-07-11 00:08:18 +100050config HAVE_LATENCYTOP_SUPPORT
51 def_bool y
52
Benjamin Herrenschmidt945feb12008-04-17 14:35:01 +100053config TRACE_IRQFLAGS_SUPPORT
54 bool
Benjamin Herrenschmidt945feb12008-04-17 14:35:01 +100055 default y
56
57config LOCKDEP_SUPPORT
58 bool
59 default y
60
Paul Mackerras14cf11a2005-09-26 16:04:21 +100061config RWSEM_GENERIC_SPINLOCK
62 bool
63
64config RWSEM_XCHGADD_ALGORITHM
65 bool
66 default y
67
Nick Piggin95c354f2008-01-30 13:31:20 +010068config GENERIC_LOCKBREAK
69 bool
70 default y
71 depends on SMP && PREEMPT
72
David Howellsf0d1b0b2006-12-08 02:37:49 -080073config ARCH_HAS_ILOG2_U32
74 bool
David Howellsef55d532006-12-08 02:37:53 -080075 default y
David Howellsf0d1b0b2006-12-08 02:37:49 -080076
77config ARCH_HAS_ILOG2_U64
78 bool
David Howellsef55d532006-12-08 02:37:53 -080079 default y if 64BIT
David Howellsf0d1b0b2006-12-08 02:37:49 -080080
Akinobu Mitae779b2f2006-03-26 01:39:33 -080081config GENERIC_HWEIGHT
82 bool
83 default y
84
Paul Mackerras14cf11a2005-09-26 16:04:21 +100085config PPC
86 bool
87 default y
Mark Salterb7e7c372013-10-07 22:15:32 -040088 select ARCH_MIGHT_HAVE_PC_PARPORT
Mark Salterc74e6d32014-01-01 11:32:26 -080089 select ARCH_MIGHT_HAVE_PC_SERIO
Stephen Rothwelld812c0e12013-03-06 18:11:51 +000090 select BINFMT_ELF
Vineeth Vijayan59994fb2014-11-14 14:42:05 +053091 select ARCH_BINFMT_ELF_RANDOMIZE_PIE
Stephen Rothwell10f85f42010-06-29 12:43:34 +100092 select OF
Stephen Neuendorffere6ce1322010-11-18 15:54:56 -080093 select OF_EARLY_FLATTREE
Marek Szyprowski708b7ee2014-02-28 14:42:56 +010094 select OF_RESERVED_MEM
Steven Rostedt2b79d692009-01-06 18:49:17 +000095 select HAVE_FTRACE_MCOUNT_RECORD
96 select HAVE_DYNAMIC_FTRACE
Steven Rostedt606576c2008-10-06 19:06:12 -040097 select HAVE_FUNCTION_TRACER
Steven Rostedt60ce8f72009-02-11 20:06:43 -050098 select HAVE_FUNCTION_GRAPH_TRACER
Catalin Marinas7ac57a82012-10-08 16:28:16 -070099 select SYSCTL_EXCEPTION_TRACE
Michael Buesch7444a722008-07-25 01:46:11 -0700100 select ARCH_WANT_OPTIONAL_GPIOLIB
Stephen Rothwell4febd952013-03-07 15:48:16 +1100101 select VIRT_TO_BUS if !PPC64
Sam Ravnborgec7748b2008-02-09 10:46:40 +0100102 select HAVE_IDE
Benjamin Herrenschmidta1f242f2008-07-23 21:27:08 -0700103 select HAVE_IOREMAP_PROT
Anton Blanchard0b5e6662013-09-23 12:05:12 +1000104 select HAVE_EFFICIENT_UNALIGNED_ACCESS if !CPU_LITTLE_ENDIAN
Mathieu Desnoyers3f550092008-02-02 15:10:35 -0500105 select HAVE_KPROBES
Jason Wessel17ce4522008-07-23 11:30:15 -0500106 select HAVE_ARCH_KGDB
Ananth N Mavinakayanahalli9edddaa2008-03-04 14:28:37 -0800107 select HAVE_KRETPROBES
Roland McGrathdec2b0d2008-07-27 16:53:20 +1000108 select HAVE_ARCH_TRACEHOOK
Yinghai Lu95f72d12010-07-12 14:36:09 +1000109 select HAVE_MEMBLOCK
Tejun Heo1d7cfe12011-12-08 10:22:08 -0800110 select HAVE_MEMBLOCK_NODE_MAP
FUJITA Tomonori46bab4e2009-08-04 19:08:26 +0000111 select HAVE_DMA_ATTRS
FUJITA Tomonori80d3e8a2009-08-04 19:08:28 +0000112 select HAVE_DMA_API_DEBUG
Steven Rostedt4e491d12008-05-14 23:49:44 -0400113 select HAVE_OPROFILE
Catalin Marinasb69ec422012-10-08 16:28:11 -0700114 select HAVE_DEBUG_KMEMLEAK
Laura Abbott308c09f2014-08-08 14:23:25 -0700115 select ARCH_HAS_SG_CHAIN
Paul Mackerrasc2e95c62009-06-12 21:10:41 +0000116 select GENERIC_ATOMIC64 if PPC32
Catalin Marinas74634492012-07-30 14:41:09 -0700117 select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
Ingo Molnarcdd6c482009-09-21 12:02:48 +0200118 select HAVE_PERF_EVENTS
Mahesh Salgaonkar359e4282010-04-07 18:10:20 +1000119 select HAVE_REGS_AND_STACK_ACCESS_API
K.Prasad5aae8a52010-06-15 11:35:19 +0530120 select HAVE_HW_BREAKPOINT if PERF_EVENTS && PPC_BOOK3S_64
Will Deaconc1d7e012012-07-30 14:42:46 -0700121 select ARCH_WANT_IPC_PARSE_VERSION
Grant Likelyad5b7f132012-01-30 08:02:19 +0000122 select SPARSE_IRQ
Grant Likelycc79ca62012-02-16 01:37:49 -0700123 select IRQ_DOMAIN
Thomas Gleixner433c9c62011-03-25 17:04:59 +0100124 select GENERIC_IRQ_SHOW
125 select GENERIC_IRQ_SHOW_LEVEL
Thomas Gleixnere8d2c472011-10-05 02:30:51 +0000126 select IRQ_FORCED_THREADING
Peter Zijlstra26723912011-05-24 17:12:00 -0700127 select HAVE_RCU_TABLE_FREE if SMP
Ian Munsie02424d82011-02-02 17:27:24 +0000128 select HAVE_SYSCALL_TRACEPOINTS
Sam Ravnborge47b65b2012-05-21 20:45:37 +0200129 select HAVE_BPF_JIT if PPC64
Michael Ellermanac5f89c2011-06-29 19:16:59 +0000130 select HAVE_ARCH_JUMP_LABEL
Huang Yingdf013ff2011-07-13 13:14:22 +0800131 select ARCH_HAVE_NMI_SAFE_CMPXCHG
Riku Voipio957e3fa2014-12-12 16:57:44 -0800132 select ARCH_HAS_GCOV_PROFILE_ALL
Thomas Gleixner17e32ea2012-04-20 13:05:48 +0000133 select GENERIC_SMP_IDLE_THREAD
Anna-Maria Gleixnerb9ed27d2012-05-18 16:45:51 +0000134 select GENERIC_CMOS_UPDATE
John Stultz70639422012-09-04 15:34:21 -0400135 select GENERIC_TIME_VSYSCALL_OLD
Anna-Maria Gleixnerb9ed27d2012-05-18 16:45:51 +0000136 select GENERIC_CLOCKEVENTS
Preeti U Murthy0d948732014-02-26 05:39:06 +0530137 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
138 select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
Paul Mackerras16293722012-05-28 13:03:47 +1000139 select GENERIC_STRNCPY_FROM_USER
140 select GENERIC_STRNLEN_USER
David Howells786d35d2012-09-28 14:31:03 +0930141 select HAVE_MOD_ARCH_SPECIFIC
142 select MODULES_USE_ELF_RELA
Al Viro0bcfe542012-10-26 23:08:25 -0400143 select CLONE_BACKWARDS
David Woodhousefe3955c2012-12-19 15:14:17 +0000144 select ARCH_USE_BUILTIN_BSWAP
Al Viro0980cae2012-12-25 16:23:09 -0500145 select OLD_SIGSUSPEND
Al Viro09a4d5d2012-12-25 19:27:42 -0500146 select OLD_SIGACTION if PPC32
Dave Hansend1a1dc02013-07-01 13:04:42 -0700147 select HAVE_DEBUG_STACKOVERFLOW
Frederic Weisbecker62d26c82013-09-24 17:18:36 +0200148 select HAVE_IRQ_EXIT_ON_IRQ_STACK
Michael Ellerman3405d232014-01-15 18:14:28 +1100149 select ARCH_USE_CMPXCHG_LOCKREF if PPC64
AKASHI Takahiro7a017722014-02-25 18:16:24 +0900150 select HAVE_ARCH_AUDITSYSCALL
Peter Zijlstra4badad32014-06-06 19:53:16 +0200151 select ARCH_SUPPORTS_ATOMIC_RMW
Anton Blancharda75c3802014-09-19 09:40:21 +1000152 select DCACHE_WORD_ACCESS if PPC64 && CPU_LITTLE_ENDIAN
Anton Blanchard10239732014-09-17 22:15:33 +1000153 select NO_BOOTMEM
Aneesh Kumar K.Vb30e7592014-11-05 21:57:41 +0530154 select HAVE_GENERIC_RCU_GUP
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000155
Anton Blanchard7a332b02013-09-23 12:04:51 +1000156config GENERIC_CSUM
157 def_bool CPU_LITTLE_ENDIAN
158
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000159config EARLY_PRINTK
160 bool
Benjamin Herrenschmidt51d30822005-11-23 17:57:25 +1100161 default y
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000162
Jason Baronb71d47c2013-11-25 23:23:11 +0000163config PANIC_TIMEOUT
164 int
165 default 180
166
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000167config COMPAT
168 bool
169 default y if PPC64
Roland McGrath01e31db2008-01-02 17:03:11 -0800170 select COMPAT_BINFMT_ELF
Chris Metcalf48b25c42012-03-15 13:13:38 -0400171 select ARCH_WANT_OLD_COMPAT_IPC
Al Viro09a4d5d2012-12-25 19:27:42 -0500172 select COMPAT_OLD_SIGACTION
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000173
174config SYSVIPC_COMPAT
175 bool
176 depends on COMPAT && SYSVIPC
177 default y
178
179# All PPC32s use generic nvram driver through ppc_md
180config GENERIC_NVRAM
181 bool
182 default y if PPC32
183
Ingo Molnarae1e9132008-11-11 09:05:16 +0100184config SCHED_OMIT_FRAME_POINTER
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000185 bool
186 default y
187
188config ARCH_MAY_HAVE_PC_FDC
189 bool
Pranith Kumar3484a312014-08-18 17:13:41 -0400190 default PCI
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000191
Kumar Gala08264cb2006-01-10 21:43:56 -0600192config PPC_OF
193 def_bool y
194
195config PPC_UDBG_16550
196 bool
197 default n
198
Kumar Gala08264cb2006-01-10 21:43:56 -0600199config GENERIC_TBSYNC
200 bool
201 default y if PPC32 && SMP
202 default n
203
Al Viroe65e1fc2006-09-12 03:04:40 -0400204config AUDIT_ARCH
205 bool
206 default y
207
Jeremy Fitzhardinge73c9cea2006-12-08 03:30:41 -0800208config GENERIC_BUG
209 bool
210 default y
211 depends on BUG
212
Johannes Bergb3028872007-03-20 05:18:02 +1100213config SYS_SUPPORTS_APM_EMULATION
Kumar Gala58da10b2007-05-23 09:51:46 -0500214 default y if PMAC_APM_EMU
Johannes Bergb3028872007-03-20 05:18:02 +1100215 bool
216
David Gibson6c5b59b2011-04-14 18:29:16 +0000217config EPAPR_BOOT
218 bool
219 help
220 Used to allow a board to specify it wants an ePAPR compliant wrapper.
221 default n
222
Kumar Galaf4fc4a52006-01-16 10:53:22 -0600223config DEFAULT_UIMAGE
224 bool
225 help
226 Used to allow a board to specify it wants a uImage built by default
227 default n
228
Johannes Berg801e4062007-12-08 02:12:39 +0100229config ARCH_HIBERNATION_POSSIBLE
230 bool
Johannes Berg543b9fd2007-05-03 22:31:38 +1000231 default y
232
Johannes Bergf4cb5702007-12-08 02:14:00 +0100233config ARCH_SUSPEND_POSSIBLE
234 def_bool y
Anton Vorontsov4ffd6952009-09-16 01:43:57 +0400235 depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx || \
Zhao Chenhuid0832a72012-07-20 20:42:36 +0800236 (PPC_85xx && !PPC_E500MC) || PPC_86xx || PPC_PSERIES \
237 || 44x || 40x
Johannes Bergf4cb5702007-12-08 02:14:00 +0100238
Benjamin Herrenschmidt4c75a6f2006-11-11 17:24:53 +1100239config PPC_DCR_NATIVE
240 bool
241 default n
242
243config PPC_DCR_MMIO
244 bool
245 default n
246
247config PPC_DCR
248 bool
249 depends on PPC_DCR_NATIVE || PPC_DCR_MMIO
250 default y
251
Benjamin Herrenschmidt4c9d2802006-11-11 17:25:08 +1100252config PPC_OF_PLATFORM_PCI
253 bool
Stephen Rothwell373a6da2007-12-21 15:37:07 +1100254 depends on PCI
Benjamin Herrenschmidt4c9d2802006-11-11 17:25:08 +1100255 depends on PPC64 # not supported on 32 bits yet
256 default n
257
Akinobu Mita6a11f752009-03-31 15:23:17 -0700258config ARCH_SUPPORTS_DEBUG_PAGEALLOC
Kim Phillipsce614c32015-01-26 13:22:22 -0600259 depends on PPC32 || PPC_STD_MMU_64
Akinobu Mita6a11f752009-03-31 15:23:17 -0700260 def_bool y
261
Ananth N Mavinakayanahalli8b7b80b2012-08-23 21:31:32 +0000262config ARCH_SUPPORTS_UPROBES
263 def_bool y
264
Dave Kleikamp172ae2e2010-02-08 11:50:57 +0000265config PPC_ADV_DEBUG_REGS
266 bool
267 depends on 40x || BOOKE
268 default y
269
270config PPC_ADV_DEBUG_IACS
271 int
272 depends on PPC_ADV_DEBUG_REGS
273 default 4 if 44x
274 default 2
275
276config PPC_ADV_DEBUG_DACS
277 int
278 depends on PPC_ADV_DEBUG_REGS
279 default 2
280
281config PPC_ADV_DEBUG_DVCS
282 int
283 depends on PPC_ADV_DEBUG_REGS
284 default 2 if 44x
285 default 0
286
287config PPC_ADV_DEBUG_DAC_RANGE
288 bool
289 depends on PPC_ADV_DEBUG_REGS && 44x
290 default y
291
Suzuki K. Poulose5e249d42013-01-07 00:26:57 +0000292config PPC_EMULATE_SSTEP
293 bool
294 default y if KPROBES || UPROBES || XMON || HAVE_HW_BREAKPOINT
295
Scott Wood1c980252014-08-08 18:40:42 -0500296config ZONE_DMA32
297 bool
298 default y if PPC64
299
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000300source "init/Kconfig"
301
Matt Helsleydc52ddc2008-10-18 20:27:21 -0700302source "kernel/Kconfig.freezer"
303
Benjamin Herrenschmidta2d2e1e2007-12-21 15:39:24 +1100304source "arch/powerpc/sysdev/Kconfig"
Kumar Gala4330f5d2007-03-16 09:32:17 -0500305source "arch/powerpc/platforms/Kconfig"
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000306
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000307menu "Kernel options"
308
309config HIGHMEM
310 bool "High memory support"
311 depends on PPC32
312
313source kernel/Kconfig.hz
314source kernel/Kconfig.preempt
315source "fs/Kconfig.binfmt"
316
Mel Gormanba72cb82007-11-28 16:21:13 -0800317config HUGETLB_PAGE_SIZE_VARIABLE
318 bool
319 depends on HUGETLB_PAGE
320 default y
321
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000322config MATH_EMULATION
323 bool "Math emulation"
Benjamin Herrenschmidt4e63f8e2013-06-09 17:01:24 +1000324 depends on 4xx || 8xx || PPC_MPC832x || BOOKE
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000325 ---help---
326 Some PowerPC chips designed for embedded applications do not have
327 a floating-point unit and therefore do not implement the
328 floating-point instructions in the PowerPC instruction set. If you
329 say Y here, the kernel will include code to emulate a floating-point
330 unit, which will allow programs that use floating-point
331 instructions to run.
332
Benjamin Herrenschmidt4e63f8e2013-06-09 17:01:24 +1000333 This is also useful to emulate missing (optional) instructions
334 such as fsqrt on cores that do have an FPU but do not implement
335 them (such as Freescale BookE).
336
Kevin Haoe05c0e82013-07-16 19:57:15 +0800337choice
338 prompt "Math emulation options"
339 default MATH_EMULATION_FULL
340 depends on MATH_EMULATION
341
342config MATH_EMULATION_FULL
343 bool "Emulate all the floating point instructions"
344 ---help---
345 Select this option will enable the kernel to support to emulate
346 all the floating point instructions. If your SoC doesn't have
347 a FPU, you should select this.
348
349config MATH_EMULATION_HW_UNIMPLEMENTED
350 bool "Just emulate the FPU unimplemented instructions"
351 ---help---
352 Select this if you know there does have a hardware FPU on your
353 SoC, but some floating point instructions are not implemented by that.
354
355endchoice
356
Michael Neuling3d72bbc2013-02-13 16:21:43 +0000357config PPC_TRANSACTIONAL_MEM
358 bool "Transactional Memory support for POWERPC"
359 depends on PPC_BOOK3S_64
360 depends on SMP
Michael Neuling7b37a122014-01-08 21:25:31 +1100361 select ALTIVEC
362 select VSX
Michael Neuling3d72bbc2013-02-13 16:21:43 +0000363 default n
364 ---help---
365 Support user-mode Transactional Memory on POWERPC.
366
FUJITA Tomonorifb3475e2008-02-04 22:28:08 -0800367config IOMMU_HELPER
368 def_bool PPC64
369
Becky Bruceec3cf2e2009-05-14 12:42:28 +0000370config SWIOTLB
371 bool "SWIOTLB support"
372 default n
373 select IOMMU_HELPER
374 ---help---
375 Support for IO bounce buffering for systems without an IOMMU.
376 This allows us to DMA to the full physical address space on
377 platforms where the size of a physical address is larger
378 than the bus address. Not all platforms support this.
379
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000380config HOTPLUG_CPU
381 bool "Support for enabling/disabling CPUs"
Stephen Rothwell40b31362013-05-21 13:49:35 +1000382 depends on SMP && (PPC_PSERIES || \
Zhao Chenhuid0832a72012-07-20 20:42:36 +0800383 PPC_PMAC || PPC_POWERNV || (PPC_85xx && !PPC_E500MC))
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000384 ---help---
385 Say Y here to be able to disable and re-enable individual
386 CPUs at runtime on SMP machines.
387
388 Say N if you are unsure.
389
Nathan Fontenot12633e82009-11-25 17:23:25 +0000390config ARCH_CPU_PROBE_RELEASE
391 def_bool y
392 depends on HOTPLUG_CPU
393
Yasunori Gotocc576372006-06-29 02:24:27 -0700394config ARCH_ENABLE_MEMORY_HOTPLUG
395 def_bool y
396
Badari Pulavartya99824f2008-02-05 00:10:18 -0800397config ARCH_HAS_WALK_MEMORY
398 def_bool y
399
Badari Pulavarty14824712008-02-05 00:10:17 -0800400config ARCH_ENABLE_MEMORY_HOTREMOVE
401 def_bool y
402
Mahesh Salgaonkarf2296a32013-11-15 09:50:50 +0530403config PPC64_SUPPORTS_MEMORY_FAILURE
404 bool "Add support for memory hwpoison"
405 depends on PPC_BOOK3S_64
406 default "y" if PPC_POWERNV
407 select ARCH_SUPPORTS_MEMORY_FAILURE
408
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000409config KEXEC
Kees Cook642e56f2013-01-16 18:53:25 -0800410 bool "kexec system call"
411 depends on (PPC_BOOK3S || FSL_BOOKE || (44x && !SMP))
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000412 help
413 kexec is a system call that implements the ability to shutdown your
414 current kernel, and to start another kernel. It is like a reboot
Matt LaPlante1f1332f2006-06-29 01:32:47 -0400415 but it is independent of the system firmware. And like a reboot
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000416 you can start any kernel with it, not just Linux.
417
Matt LaPlante1f1332f2006-06-29 01:32:47 -0400418 The name comes from the similarity to the exec system call.
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000419
420 It is an ongoing process to be certain the hardware in a machine
421 is properly shutdown, so do not be surprised if this code does not
Geert Uytterhoevenbf220692013-08-20 21:38:03 +0200422 initially work for you. As of this writing the exact hardware
423 interface is strongly in flux, so no good recommendation can be
424 made.
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000425
Haren Mynenie8625d462006-01-14 13:48:25 -0800426config CRASH_DUMP
Bernhard Walle3420b5d2008-06-27 03:02:15 +1000427 bool "Build a kdump crash kernel"
Suzuki Poulose47da4212012-04-15 22:27:35 +0000428 depends on PPC64 || 6xx || FSL_BOOKE || (44x && !SMP)
Guenter Roeckfb43e842014-06-30 11:45:30 -0700429 select RELOCATABLE if (PPC64 && !COMPILE_TEST) || 44x || FSL_BOOKE
Haren Mynenie8625d462006-01-14 13:48:25 -0800430 help
431 Build a kernel suitable for use as a kdump capture kernel.
Mohan Kumar M54622f12008-10-21 17:38:10 +0000432 The same kernel binary can be used as production kernel and dump
433 capture kernel.
Haren Mynenie8625d462006-01-14 13:48:25 -0800434
Mahesh Salgaonkareb39c882012-02-16 01:14:22 +0000435config FA_DUMP
436 bool "Firmware-assisted dump"
Michael Ellerman90890b12013-10-28 15:00:35 +1100437 depends on PPC64 && PPC_RTAS && CRASH_DUMP && KEXEC
Manish Ahuja242f2712008-03-22 10:50:50 +1100438 help
Mahesh Salgaonkareb39c882012-02-16 01:14:22 +0000439 A robust mechanism to get reliable kernel crash dump with
440 assistance from firmware. This approach does not use kexec,
441 instead firmware assists in booting the kdump kernel
442 while preserving memory contents. Firmware-assisted dump
443 is meant to be a kdump replacement offering robustness and
444 speed not possible without system firmware assistance.
Manish Ahuja242f2712008-03-22 10:50:50 +1100445
446 If unsure, say "N"
447
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000448config IRQ_ALL_CPUS
449 bool "Distribute interrupts on all CPUs by default"
Paul Bolle6cf09b92013-05-15 11:21:01 +0200450 depends on SMP
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000451 help
452 This option gives the kernel permission to distribute IRQs across
453 multiple CPUs. Saying N here will route all IRQs to the first
454 CPU. Generally saying Y is safe, although some problems have been
455 reported with SMP Power Macintoshes with this option enabled.
456
Andy Whitcroftffa27b62005-10-28 17:46:58 -0700457config NUMA
458 bool "NUMA support"
459 depends on PPC64
460 default y if SMP && PPC_PSERIES
461
Yasunori Gotoc80d79d2006-04-10 22:53:53 -0700462config NODES_SHIFT
463 int
Anton Blanchardea55bf22009-09-21 19:56:43 +0000464 default "8" if PPC64
Yasunori Gotoc80d79d2006-04-10 22:53:53 -0700465 default "4"
466 depends on NEED_MULTIPLE_NODES
467
Nishanth Aravamudan8c272262014-05-19 11:14:23 -0700468config USE_PERCPU_NUMA_NODE_ID
469 def_bool y
470 depends on NUMA
471
Nishanth Aravamudan64bb80d2014-05-16 16:41:20 -0700472config HAVE_MEMORYLESS_NODES
473 def_bool y
474 depends on NUMA
475
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000476config ARCH_SELECT_MEMORY_MODEL
477 def_bool y
478 depends on PPC64
479
480config ARCH_FLATMEM_ENABLE
Andy Whitcroft9100b202005-11-29 19:20:55 +0000481 def_bool y
482 depends on (PPC64 && !NUMA) || PPC32
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000483
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000484config ARCH_SPARSEMEM_ENABLE
485 def_bool y
Andy Whitcroft9100b202005-11-29 19:20:55 +0000486 depends on PPC64
Andy Whitcroftd29eff72007-10-16 01:24:17 -0700487 select SPARSEMEM_VMEMMAP_ENABLE
Anton Blanchard45fb6ce2005-11-11 14:22:35 +1100488
489config ARCH_SPARSEMEM_DEFAULT
490 def_bool y
Benjamin Herrenschmidt78bde532007-02-13 11:46:06 +1100491 depends on (SMP && PPC_PSERIES) || PPC_PS3
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000492
Benjamin Herrenschmidt5a1eb5c2009-10-30 15:03:54 +1100493config SYS_SUPPORTS_HUGETLBFS
Becky Bruce41151e72011-06-28 09:54:48 +0000494 bool
Benjamin Herrenschmidt5a1eb5c2009-10-30 15:03:54 +1100495
Mel Gormanc67c3cb2006-09-27 01:49:49 -0700496source "mm/Kconfig"
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000497
Mike Kravetz7e9191d2005-11-07 09:39:48 -0800498config ARCH_MEMORY_PROBE
499 def_bool y
500 depends on MEMORY_HOTPLUG
501
Andy Whitcroft75167952006-10-21 10:24:14 -0700502# Some NUMA nodes have memory ranges that span
503# other nodes. Even though a pfn is valid and
504# between a node's start and end pfns, it may not
505# reside on that node. See memmap_init_zone()
506# for details.
507config NODES_SPAN_OTHER_NODES
508 def_bool y
509 depends on NEED_MULTIPLE_NODES
510
Benjamin Herrenschmidt16c2d472007-05-08 16:27:28 +1000511config PPC_HAS_HASH_64K
512 bool
513 depends on PPC64
514 default n
515
Yuri Tikhonove1240122009-01-29 01:40:44 +0000516config STDBINUTILS
517 bool "Using standard binutils settings"
518 depends on 44x
519 default y
520 help
521 Turning this option off allows you to select 256KB PAGE_SIZE on 44x.
522 Note, that kernel will be able to run only those applications,
523 which had been compiled using binutils later than 2.17.50.0.3 with
524 '-zmax-page-size' set to 256K (the default is 64K). Or, if using
525 the older binutils, you can patch them with a trivial patch, which
526 changes the ELF_MAXPAGESIZE definition from 0x10000 to 0x40000.
527
Ilya Yanokca9153a2008-12-11 04:55:41 +0300528choice
529 prompt "Page size"
530 default PPC_4K_PAGES
Benjamin Herrenschmidt3c726f82005-11-07 11:06:55 +1100531 help
Ilya Yanokca9153a2008-12-11 04:55:41 +0300532 Select the kernel logical page size. Increasing the page size
533 will reduce software overhead at each page boundary, allow
534 hardware prefetch mechanisms to be more effective, and allow
535 larger dma transfers increasing IO efficiency and reducing
536 overhead. However the utilization of memory will increase.
537 For example, each cached file will using a multiple of the
538 page size to hold its contents and the difference between the
539 end of file and the end of page is wasted.
540
541 Some dedicated systems, such as software raid serving with
542 accelerated calculations, have shown significant increases.
543
544 If you configure a 64 bit kernel for 64k pages but the
545 processor does not support them, then the kernel will simulate
546 them with 4k pages, loading them on demand, but with the
547 reduced software overhead and larger internal fragmentation.
548 For the 32 bit kernel, a large page option will not be offered
549 unless it is supported by the configured processor.
550
551 If unsure, choose 4K_PAGES.
552
553config PPC_4K_PAGES
554 bool "4k page size"
555
556config PPC_16K_PAGES
LEROY Christophe959d6172014-09-19 10:36:09 +0200557 bool "16k page size" if 44x || PPC_8xx
Ilya Yanokca9153a2008-12-11 04:55:41 +0300558
559config PPC_64K_PAGES
Benjamin Herrenschmidt2d27cfd2009-07-23 23:15:59 +0000560 bool "64k page size" if 44x || PPC_STD_MMU_64 || PPC_BOOK3E_64
Scott Wood9841c792014-01-17 18:36:38 -0600561 depends on !PPC_FSL_BOOK3E
Ilya Yanokca9153a2008-12-11 04:55:41 +0300562 select PPC_HAS_HASH_64K if PPC_STD_MMU_64
563
Yuri Tikhonove1240122009-01-29 01:40:44 +0000564config PPC_256K_PAGES
565 bool "256k page size" if 44x
Hugh Dickinsadf213c2009-04-06 11:01:15 +0000566 depends on !STDBINUTILS
Yuri Tikhonove1240122009-01-29 01:40:44 +0000567 help
568 Make the page size 256k.
569
570 As the ELF standard only requires alignment to support page
571 sizes up to 64k, you will need to compile all of your user
572 space applications with a non-standard binutils settings
573 (see the STDBINUTILS description for details).
574
575 Say N unless you know what you are doing.
576
Ilya Yanokca9153a2008-12-11 04:55:41 +0300577endchoice
Benjamin Herrenschmidt3c726f82005-11-07 11:06:55 +1100578
Stephen Rothwell53bcddb2008-04-11 11:11:56 +1000579config FORCE_MAX_ZONEORDER
580 int "Maximum zone order"
Benjamin Herrenschmidt066c4b82009-07-21 15:25:53 +0000581 range 9 64 if PPC64 && PPC_64K_PAGES
582 default "9" if PPC64 && PPC_64K_PAGES
583 range 13 64 if PPC64 && !PPC_64K_PAGES
584 default "13" if PPC64 && !PPC_64K_PAGES
585 range 9 64 if PPC32 && PPC_16K_PAGES
586 default "9" if PPC32 && PPC_16K_PAGES
587 range 7 64 if PPC32 && PPC_64K_PAGES
588 default "7" if PPC32 && PPC_64K_PAGES
589 range 5 64 if PPC32 && PPC_256K_PAGES
590 default "5" if PPC32 && PPC_256K_PAGES
Johannes Bergebe40c52008-09-24 04:29:08 +0000591 range 11 64
Stephen Rothwell53bcddb2008-04-11 11:11:56 +1000592 default "11"
593 help
594 The kernel memory allocator divides physically contiguous memory
595 blocks into "zones", where each zone is a power of two number of
596 pages. This option selects the largest power of two that the kernel
597 keeps in the memory allocator. If you need to allocate very large
598 blocks of physically contiguous memory, then you may need to
599 increase this value.
600
601 This config option is actually maximum order plus one. For example,
602 a value of 11 means that the largest free memory block is 2^10 pages.
603
604 The page size is not necessarily 4KB. For example, on 64-bit
605 systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES. Keep
606 this in mind when choosing a value for this option.
607
Paul Mackerrasfa282372008-01-24 08:35:13 +1100608config PPC_SUBPAGE_PROT
609 bool "Support setting protections for 4k subpages"
Ilya Yanokca9153a2008-12-11 04:55:41 +0300610 depends on PPC_STD_MMU_64 && PPC_64K_PAGES
Paul Mackerrasfa282372008-01-24 08:35:13 +1100611 help
612 This option adds support for a system call to allow user programs
613 to set access permissions (read/write, readonly, or no access)
614 on the 4k subpages of each 64k page.
615
Ian Munsiee83d0162014-10-08 19:54:50 +1100616config PPC_COPRO_BASE
617 bool
618 default n
619
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000620config SCHED_SMT
621 bool "SMT (Hyperthreading) scheduler support"
622 depends on PPC64 && SMP
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000623 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
Michael Neulingb92a66a2012-09-10 00:35:26 +0000628config PPC_DENORMALISATION
629 bool "PowerPC denormalisation exception handling"
630 depends on PPC_BOOK3S_64
Anton Blanchard4e90a2a2013-07-31 16:31:26 +1000631 default "y" if PPC_POWERNV
Michael Neulingb92a66a2012-09-10 00:35:26 +0000632 ---help---
633 Add support for handling denormalisation of single precision
634 values. Useful for bare metal only. If unsure say Y here.
635
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000636config CMDLINE_BOOL
637 bool "Default bootloader kernel arguments"
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000638
639config CMDLINE
640 string "Initial kernel command string"
641 depends on CMDLINE_BOOL
642 default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
643 help
644 On some platforms, there is currently no way for the boot loader to
645 pass arguments to the kernel. For these platforms, you can supply
646 some command-line options at build time by entering them here. In
647 most cases you will need to specify the root device here.
648
Sebastian Siewioreb3b80f2014-02-20 21:48:17 +0100649config CMDLINE_FORCE
650 bool "Always use the default kernel command string"
651 depends on CMDLINE_BOOL
652 help
653 Always use the default kernel command string, even if the boot
654 loader passes other arguments to the kernel.
655 This is useful if you cannot or don't want to change the
656 command-line options your boot loader passes to the kernel.
657
Grant Likelyc356aa42008-07-09 09:41:52 -0600658config EXTRA_TARGETS
659 string "Additional default image types"
660 help
661 List additional targets to be built by the bootwrapper here (separated
662 by spaces). This is useful for targets that depend of device tree
663 files in the .dts directory.
664
665 Targets in this list will be build as part of the default build
666 target, or when the user does a 'make zImage' or a
667 'make zImage.initrd'.
668
669 If unsure, leave blank
670
Johannes Bergb28f5082008-01-15 23:17:00 -0500671config ARCH_WANTS_FREEZER_CONTROL
672 def_bool y
673 depends on ADB_PMU
674
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000675source kernel/power/Kconfig
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000676
677config SECCOMP
678 bool "Enable seccomp to safely compute untrusted bytecode"
679 depends on PROC_FS
680 default y
681 help
682 This kernel feature is useful for number crunching applications
683 that may need to compute untrusted bytecode during their
684 execution. By using pipes or other transports made available to
685 the process as file descriptors supporting the read/write
686 syscalls, it's possible to isolate those applications in
687 their own address space using seccomp. Once seccomp is
688 enabled via /proc/<pid>/seccomp, it cannot be disabled
689 and the task is only allowed to execute a few safe syscalls
690 defined by each seccomp mode.
691
692 If unsure, say Y. Only embedded should say N here.
693
694endmenu
695
696config ISA_DMA_API
697 bool
Stephen Rothwell3d066d72012-02-22 14:10:12 +0000698 default PCI
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000699
700menu "Bus options"
701
702config ISA
703 bool "Support for ISA-bus hardware"
Paul Bolle933ee712013-03-27 00:47:03 +0000704 depends on PPC_CHRP
Paul Mackerrasf9bd1702005-10-26 16:47:42 +1000705 select PPC_I8259
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000706 help
707 Find out whether you have ISA slots on your motherboard. ISA is the
708 name of a bus system, i.e. the way the CPU talks to the other stuff
709 inside your box. If you have an Apple machine, say N here; if you
Paul Bolle933ee712013-03-27 00:47:03 +0000710 have an IBM RS/6000 or pSeries machine, say Y. If you have an
711 embedded board, consult your board documentation.
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000712
Christoph Lameter5ac6da62007-02-10 01:43:14 -0800713config ZONE_DMA
714 bool
715 default y
716
FUJITA Tomonoriaf407c62010-03-10 15:23:27 -0800717config NEED_DMA_MAP_STATE
718 def_bool (PPC64 || NOT_COHERENT_CACHE)
719
FUJITA Tomonorie32205e2010-05-26 14:44:33 -0700720config NEED_SG_DMA_LENGTH
721 def_bool y
722
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000723config GENERIC_ISA_DMA
724 bool
Anton Vorontsov19274452010-07-15 07:38:16 +0000725 depends on ISA_DMA_API
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000726 default y
727
Paul Mackerras25635c72005-10-26 16:36:55 +1000728config PPC_INDIRECT_PCI
729 bool
730 depends on PCI
Becky Bruce63dafe52006-01-14 16:57:39 -0600731 default y if 40x || 44x
Paul Mackerras25635c72005-10-26 16:36:55 +1000732 default n
733
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000734config EISA
735 bool
736
737config SBUS
738 bool
739
Kumar Gala08264cb2006-01-10 21:43:56 -0600740config FSL_SOC
741 bool
742
Roy Zang55c44992007-07-10 18:44:34 +0800743config FSL_PCI
744 bool
745 select PPC_INDIRECT_PCI
Kumar Galad0839112009-01-28 13:25:29 -0600746 select PCI_QUIRKS
Roy Zang55c44992007-07-10 18:44:34 +0800747
Anton Vorontsov4ffd6952009-09-16 01:43:57 +0400748config FSL_PMC
749 bool
750 default y
751 depends on SUSPEND && (PPC_85xx || PPC_86xx)
752 help
753 Freescale MPC85xx/MPC86xx power management controller support
754 (suspend/resume). For MPC83xx see platforms/83xx/suspend.c
755
Victor Gallardod164f6d2010-10-08 10:25:27 +0000756config PPC4xx_CPM
757 bool
758 default y
759 depends on SUSPEND && (44x || 40x)
760 help
761 PPC4xx Clock Power Management (CPM) support (suspend/resume).
762 It also enables support for two different idle states (idle-wait
763 and idle-doze).
764
Stefan Roese2a706912008-03-26 22:39:50 +1100765config 4xx_SOC
766 bool
767
Anton Vorontsovacaa7aa2008-04-11 21:03:40 +0400768config FSL_LBC
Roy Zang3ab8f2a2010-10-18 15:22:31 +0800769 bool "Freescale Local Bus support"
770 depends on FSL_SOC
Anton Vorontsovacaa7aa2008-04-11 21:03:40 +0400771 help
Roy Zang3ab8f2a2010-10-18 15:22:31 +0800772 Enables reporting of errors from the Freescale local bus
773 controller. Also contains some common code used by
774 drivers for specific local bus peripherals.
Anton Vorontsovacaa7aa2008-04-11 21:03:40 +0400775
Anton Vorontsov83ff9dc2008-05-23 20:38:54 +0400776config FSL_GTM
777 bool
778 depends on PPC_83xx || QUICC_ENGINE || CPM2
779 help
780 Freescale General-purpose Timers support
781
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000782# Yes MCA RS/6000s exist but Linux-PPC does not currently support any
783config MCA
784 bool
785
John Rigbyb5005632008-06-26 11:07:56 -0600786# Platforms that what PCI turned unconditionally just do select PCI
787# in their config node. Platforms that want to choose at config
788# time should select PPC_PCI_CHOICE
789config PPC_PCI_CHOICE
790 bool
791
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000792config PCI
John Rigbyb5005632008-06-26 11:07:56 -0600793 bool "PCI support" if PPC_PCI_CHOICE
794 default y if !40x && !CPM2 && !8xx && !PPC_83xx \
Albert Herranzbcc48592009-12-12 06:31:39 +0000795 && !PPC_85xx && !PPC_86xx && !GAMECUBE_COMMON
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000796 default PCI_QSPAN if !4xx && !CPM2 && 8xx
Michael S. Tsirkin335b8cf2011-11-24 21:06:41 +0200797 select GENERIC_PCI_IOMAP
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000798 help
799 Find out whether your system includes a PCI bus. PCI is the name of
800 a bus system, i.e. the way the CPU talks to the other stuff inside
801 your box. If you say Y here, the kernel will include drivers and
802 infrastructure code to support PCI bus devices.
803
804config PCI_DOMAINS
Matthew Wilcox36e23592007-07-10 10:54:40 -0600805 def_bool PCI
806
807config PCI_SYSCALL
808 def_bool PCI
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000809
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000810config PCI_QSPAN
811 bool "QSpan PCI"
812 depends on !4xx && !CPM2 && 8xx
Paul Mackerrasf9bd1702005-10-26 16:47:42 +1000813 select PPC_I8259
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000814 help
815 Say Y here if you have a system based on a Motorola 8xx-series
816 embedded processor with a QSPAN PCI interface, otherwise say N.
817
818config PCI_8260
819 bool
820 depends on PCI && 8260
Paul Mackerras25635c72005-10-26 16:36:55 +1000821 select PPC_INDIRECT_PCI
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000822 default y
823
Jake Moilanenbb53bb32006-06-07 16:05:46 -0500824source "drivers/pci/pcie/Kconfig"
825
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000826source "drivers/pci/Kconfig"
827
828source "drivers/pcmcia/Kconfig"
829
830source "drivers/pci/hotplug/Kconfig"
831
Zhang Weif1f389d2008-04-18 13:33:39 -0700832config HAS_RAPIDIO
833 bool
834 default n
835
836config RAPIDIO
Alexandre Bounine56abde72014-01-23 15:56:04 -0800837 tristate "RapidIO support"
Alexandre Bounine388b78a2011-03-23 16:43:03 -0700838 depends on HAS_RAPIDIO || PCI
Zhang Weif1f389d2008-04-18 13:33:39 -0700839 help
840 If you say Y here, the kernel will include drivers and
841 infrastructure code to support RapidIO interconnect devices.
842
Alexandre Bounine388b78a2011-03-23 16:43:03 -0700843config FSL_RIO
844 bool "Freescale Embedded SRIO Controller support"
Alexandre Bounine56abde72014-01-23 15:56:04 -0800845 depends on RAPIDIO = y && HAS_RAPIDIO
Alexandre Bounine388b78a2011-03-23 16:43:03 -0700846 default "n"
847 ---help---
848 Include support for RapidIO controller on Freescale embedded
849 processors (MPC8548, MPC8641, etc).
850
Zhang Weif1f389d2008-04-18 13:33:39 -0700851source "drivers/rapidio/Kconfig"
852
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000853endmenu
854
Suzuki Poulose0f890c82011-12-14 22:57:15 +0000855config NONSTATIC_KERNEL
856 bool
857 default n
858
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000859menu "Advanced setup"
860 depends on PPC32
861
862config ADVANCED_OPTIONS
863 bool "Prompt for advanced kernel configuration options"
864 help
865 This option will enable prompting for a variety of advanced kernel
866 configuration options. These options can cause the kernel to not
867 work if they are set incorrectly, but can be used to optimize certain
868 aspects of kernel memory management.
869
870 Unless you know what you are doing, say N here.
871
872comment "Default settings for advanced configuration options are used"
873 depends on !ADVANCED_OPTIONS
874
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000875config LOWMEM_SIZE_BOOL
876 bool "Set maximum low memory"
877 depends on ADVANCED_OPTIONS
878 help
879 This option allows you to set the maximum amount of memory which
880 will be used as "low memory", that is, memory which the kernel can
881 access directly, without having to set up a kernel virtual mapping.
882 This can be useful in optimizing the layout of kernel virtual
883 memory.
884
885 Say N here unless you know what you are doing.
886
887config LOWMEM_SIZE
888 hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
889 default "0x30000000"
890
Trent Piepho96051462008-12-08 19:34:58 -0800891config LOWMEM_CAM_NUM_BOOL
892 bool "Set number of CAMs to use to map low memory"
893 depends on ADVANCED_OPTIONS && FSL_BOOKE
894 help
895 This option allows you to set the maximum number of CAM slots that
896 will be used to map low memory. There are a limited number of slots
897 available and even more limited number that will fit in the L1 MMU.
898 However, using more entries will allow mapping more low memory. This
899 can be useful in optimizing the layout of kernel virtual memory.
900
901 Say N here unless you know what you are doing.
902
903config LOWMEM_CAM_NUM
Josh Boyer9b71dbd2009-03-31 08:05:50 -0400904 depends on FSL_BOOKE
Trent Piepho96051462008-12-08 19:34:58 -0800905 int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL
906 default 3
907
Suzuki Poulose0f890c82011-12-14 22:57:15 +0000908config DYNAMIC_MEMSTART
Kees Cook642e56f2013-01-16 18:53:25 -0800909 bool "Enable page aligned dynamic load address for kernel"
910 depends on ADVANCED_OPTIONS && FLATMEM && (FSL_BOOKE || 44x)
Suzuki Poulose0f890c82011-12-14 22:57:15 +0000911 select NONSTATIC_KERNEL
Kumar Gala37dd2ba2008-04-22 04:22:34 +1000912 help
Suzuki Poulose0f890c82011-12-14 22:57:15 +0000913 This option enables the kernel to be loaded at any page aligned
914 physical address. The kernel creates a mapping from KERNELBASE to
915 the address where the kernel is loaded. The page size here implies
916 the TLB page size of the mapping for kernel on the particular platform.
917 Please refer to the init code for finding the TLB page size.
Kumar Gala37dd2ba2008-04-22 04:22:34 +1000918
Suzuki Poulose0f890c82011-12-14 22:57:15 +0000919 DYNAMIC_MEMSTART is an easy way of implementing pseudo-RELOCATABLE
920 kernel image, where the only restriction is the page aligned kernel
921 load address. When this option is enabled, the compile time physical
922 address CONFIG_PHYSICAL_START is ignored.
Kumar Gala37dd2ba2008-04-22 04:22:34 +1000923
Suzuki Poulose9c5f7d32011-12-14 22:58:12 +0000924 This option is overridden by CONFIG_RELOCATABLE
925
Kumar Gala37dd2ba2008-04-22 04:22:34 +1000926config RELOCATABLE
Kees Cook642e56f2013-01-16 18:53:25 -0800927 bool "Build a relocatable kernel"
Kevin Haodd189692013-12-24 15:12:06 +0800928 depends on ADVANCED_OPTIONS && FLATMEM && (44x || FSL_BOOKE)
Suzuki Poulose9c5f7d32011-12-14 22:58:12 +0000929 select NONSTATIC_KERNEL
Kumar Gala37dd2ba2008-04-22 04:22:34 +1000930 help
931 This builds a kernel image that is capable of running at the
Suzuki Poulose9c5f7d32011-12-14 22:58:12 +0000932 location the kernel is loaded at, without any alignment restrictions.
933 This feature is a superset of DYNAMIC_MEMSTART and hence overrides it.
Kumar Gala37dd2ba2008-04-22 04:22:34 +1000934
935 One use is for the kexec on panic case where the recovery kernel
936 must live at a different physical address than the primary
937 kernel.
938
939 Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address
940 it has been loaded at and the compile time physical addresses
941 CONFIG_PHYSICAL_START is ignored. However CONFIG_PHYSICAL_START
942 setting can still be useful to bootwrappers that need to know the
Suzuki Poulose9c5f7d32011-12-14 22:58:12 +0000943 load address of the kernel (eg. u-boot/mkimage).
944
945config RELOCATABLE_PPC32
946 def_bool y
947 depends on PPC32 && RELOCATABLE
Kumar Gala37dd2ba2008-04-22 04:22:34 +1000948
949config PAGE_OFFSET_BOOL
950 bool "Set custom page offset address"
951 depends on ADVANCED_OPTIONS
952 help
953 This option allows you to set the kernel virtual address at which
954 the kernel will map low memory. This can be useful in optimizing
955 the virtual memory layout of the system.
956
957 Say N here unless you know what you are doing.
958
959config PAGE_OFFSET
960 hex "Virtual address of memory base" if PAGE_OFFSET_BOOL
961 default "0xc0000000"
962
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000963config KERNEL_START_BOOL
964 bool "Set custom kernel base address"
965 depends on ADVANCED_OPTIONS
966 help
967 This option allows you to set the kernel virtual address at which
Kumar Gala37dd2ba2008-04-22 04:22:34 +1000968 the kernel will be loaded. Normally this should match PAGE_OFFSET
969 however there are times (like kdump) that one might not want them
970 to be the same.
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000971
972 Say N here unless you know what you are doing.
973
974config KERNEL_START
975 hex "Virtual address of kernel base" if KERNEL_START_BOOL
Kumar Gala37dd2ba2008-04-22 04:22:34 +1000976 default PAGE_OFFSET if PAGE_OFFSET_BOOL
Suzuki Poulose0f890c82011-12-14 22:57:15 +0000977 default "0xc2000000" if CRASH_DUMP && !NONSTATIC_KERNEL
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000978 default "0xc0000000"
979
Kumar Gala37dd2ba2008-04-22 04:22:34 +1000980config PHYSICAL_START_BOOL
981 bool "Set physical address where the kernel is loaded"
982 depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE
983 help
984 This gives the physical address where the kernel is loaded.
985
986 Say N here unless you know what you are doing.
987
988config PHYSICAL_START
989 hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL
Suzuki Poulose0f890c82011-12-14 22:57:15 +0000990 default "0x02000000" if PPC_STD_MMU && CRASH_DUMP && !NONSTATIC_KERNEL
Kumar Gala37dd2ba2008-04-22 04:22:34 +1000991 default "0x00000000"
992
993config PHYSICAL_ALIGN
994 hex
Trent Piephoc8f35702008-12-08 19:34:59 -0800995 default "0x04000000" if FSL_BOOKE
Kumar Gala37dd2ba2008-04-22 04:22:34 +1000996 help
997 This value puts the alignment restrictions on physical address
998 where kernel is loaded and run from. Kernel is compiled for an
999 address which meets above alignment restriction.
1000
Paul Mackerras14cf11a2005-09-26 16:04:21 +10001001config TASK_SIZE_BOOL
1002 bool "Set custom user task size"
1003 depends on ADVANCED_OPTIONS
1004 help
1005 This option allows you to set the amount of virtual address space
1006 allocated to user tasks. This can be useful in optimizing the
1007 virtual memory layout of the system.
1008
1009 Say N here unless you know what you are doing.
1010
1011config TASK_SIZE
1012 hex "Size of user task space" if TASK_SIZE_BOOL
Paul Bolle933ee712013-03-27 00:47:03 +00001013 default "0x80000000" if PPC_8xx
Kumar Gala4d9e55102007-10-11 13:40:21 -05001014 default "0xc0000000"
Paul Mackerras14cf11a2005-09-26 16:04:21 +10001015
Benjamin Herrenschmidt84532a02009-05-27 13:33:14 +10001016config CONSISTENT_SIZE_BOOL
1017 bool "Set custom consistent memory pool size"
1018 depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
1019 help
1020 This option allows you to set the size of the
1021 consistent memory pool. This pool of virtual memory
1022 is used to make consistent memory allocations.
1023
1024config CONSISTENT_SIZE
1025 hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
1026 default "0x00200000" if NOT_COHERENT_CACHE
1027
Paul Mackerras14cf11a2005-09-26 16:04:21 +10001028config PIN_TLB
1029 bool "Pinned Kernel TLBs (860 ONLY)"
1030 depends on ADVANCED_OPTIONS && 8xx
1031endmenu
1032
Stephen Rothwellcabb5582005-09-30 16:16:52 +10001033if PPC64
Paul Mackerras549e8152008-08-30 11:43:47 +10001034config RELOCATABLE
1035 bool "Build a relocatable kernel"
Guenter Roeckfb43e842014-06-30 11:45:30 -07001036 depends on !COMPILE_TEST
Suzuki Poulose0f890c82011-12-14 22:57:15 +00001037 select NONSTATIC_KERNEL
Paul Mackerras549e8152008-08-30 11:43:47 +10001038 help
1039 This builds a kernel image that is capable of running anywhere
1040 in the RMA (real memory area) at any 16k-aligned base address.
1041 The kernel is linked as a position-independent executable (PIE)
1042 and contains dynamic relocations which are processed early
1043 in the bootup process.
1044
1045 One use is for the kexec on panic case where the recovery kernel
1046 must live at a different physical address than the primary
1047 kernel.
1048
Paul Mackerrasbdbc29c2013-08-27 16:07:49 +10001049# This value must have zeroes in the bottom 60 bits otherwise lots will break
Kumar Gala37dd2ba2008-04-22 04:22:34 +10001050config PAGE_OFFSET
Stephen Rothwellcabb5582005-09-30 16:16:52 +10001051 hex
Stephen Rothwelleeb2d212005-09-30 17:24:15 +10001052 default "0xc000000000000000"
Kumar Gala37dd2ba2008-04-22 04:22:34 +10001053config KERNEL_START
1054 hex
Kumar Gala37dd2ba2008-04-22 04:22:34 +10001055 default "0xc000000000000000"
1056config PHYSICAL_START
1057 hex
Kumar Gala37dd2ba2008-04-22 04:22:34 +10001058 default "0x00000000"
Stephen Rothwellcabb5582005-09-30 16:16:52 +10001059endif
1060
Michael Ellermana4da0d52013-10-11 14:07:57 +11001061config ARCH_RANDOM
1062 def_bool n
1063
Paul Mackerras14cf11a2005-09-26 16:04:21 +10001064source "net/Kconfig"
1065
1066source "drivers/Kconfig"
1067
1068source "fs/Kconfig"
1069
Li Yang98658532006-10-03 23:10:46 -05001070source "arch/powerpc/sysdev/qe_lib/Kconfig"
1071
Paul Mackerras14cf11a2005-09-26 16:04:21 +10001072source "lib/Kconfig"
1073
Paul Mackerras14cf11a2005-09-26 16:04:21 +10001074source "arch/powerpc/Kconfig.debug"
1075
1076source "security/Kconfig"
1077
1078config KEYS_COMPAT
1079 bool
1080 depends on COMPAT && KEYS
1081 default y
1082
1083source "crypto/Kconfig"
Domen Puncer6f668282007-09-21 00:00:11 +10001084
Sylvain Munaut1088a202007-09-16 20:53:25 +10001085config PPC_LIB_RHEAP
1086 bool
1087
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -05001088source "arch/powerpc/kvm/Kconfig"