blob: 65fba4c34cd75fd94e7565aeea211e223938c8fe [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
Jeremy Fitzhardinge600715d2008-09-11 01:31:45 -070015config ARCH_PHYS_ADDR_T_64BIT
16 def_bool PPC64 || PHYS_64BIT
17
FUJITA Tomonori787d44c2010-10-01 11:12:54 +000018config ARCH_DMA_ADDR_T_64BIT
19 def_bool ARCH_PHYS_ADDR_T_64BIT
20
Paul Mackerras14cf11a2005-09-26 16:04:21 +100021config MMU
22 bool
23 default y
24
Tejun Heoc2a7e812009-08-14 15:00:53 +090025config HAVE_SETUP_PER_CPU_AREA
Tejun Heoe74e3962009-03-30 19:07:44 +090026 def_bool PPC64
27
Tejun Heoc2a7e812009-08-14 15:00:53 +090028config NEED_PER_CPU_EMBED_FIRST_CHUNK
travis@sgi.comb32ef632008-01-30 13:32:51 +010029 def_bool PPC64
30
Michael Ellerman551b81f2009-10-13 19:44:44 +000031config NR_IRQS
32 int "Number of virtual interrupt numbers"
Anton Blanchard859aefc2010-01-31 01:14:03 +000033 range 32 32768
Michael Ellerman551b81f2009-10-13 19:44:44 +000034 default "512"
35 help
36 This defines the number of virtual interrupt numbers the kernel
37 can manage. Virtual interrupt numbers are what you see in
38 /proc/interrupts. If you configure your system to have too few,
39 drivers will fail to load or worse - handle with care.
40
Christoph Hellwigfd3e0bb2008-04-17 14:35:00 +100041config STACKTRACE_SUPPORT
42 bool
43 default y
44
Benjamin Herrenschmidt945feb12008-04-17 14:35:01 +100045config TRACE_IRQFLAGS_SUPPORT
46 bool
Benjamin Herrenschmidt945feb12008-04-17 14:35:01 +100047 default y
48
49config LOCKDEP_SUPPORT
50 bool
51 default y
52
Paul Mackerras14cf11a2005-09-26 16:04:21 +100053config RWSEM_GENERIC_SPINLOCK
54 bool
55
56config RWSEM_XCHGADD_ALGORITHM
57 bool
58 default y
59
Nick Piggin95c354f2008-01-30 13:31:20 +010060config GENERIC_LOCKBREAK
61 bool
62 default y
63 depends on SMP && PREEMPT
64
David Howellsf0d1b0b2006-12-08 02:37:49 -080065config ARCH_HAS_ILOG2_U32
66 bool
David Howellsef55d532006-12-08 02:37:53 -080067 default y
David Howellsf0d1b0b2006-12-08 02:37:49 -080068
69config ARCH_HAS_ILOG2_U64
70 bool
David Howellsef55d532006-12-08 02:37:53 -080071 default y if 64BIT
David Howellsf0d1b0b2006-12-08 02:37:49 -080072
Akinobu Mitae779b2f2006-03-26 01:39:33 -080073config GENERIC_HWEIGHT
74 bool
75 default y
76
Benjamin Herrenschmidt817820b2015-06-24 15:25:31 +100077config ARCH_HAS_DMA_SET_COHERENT_MASK
78 bool
79
Paul Mackerras14cf11a2005-09-26 16:04:21 +100080config PPC
81 bool
82 default y
Mark Salterb7e7c372013-10-07 22:15:32 -040083 select ARCH_MIGHT_HAVE_PC_PARPORT
Mark Salterc74e6d32014-01-01 11:32:26 -080084 select ARCH_MIGHT_HAVE_PC_SERIO
Stephen Rothwelld812c0e12013-03-06 18:11:51 +000085 select BINFMT_ELF
Kees Cook2b68f6c2015-04-14 15:48:00 -070086 select ARCH_HAS_ELF_RANDOMIZE
Stephen Rothwell10f85f42010-06-29 12:43:34 +100087 select OF
Stephen Neuendorffere6ce1322010-11-18 15:54:56 -080088 select OF_EARLY_FLATTREE
Marek Szyprowski708b7ee2014-02-28 14:42:56 +010089 select OF_RESERVED_MEM
Steven Rostedt2b79d692009-01-06 18:49:17 +000090 select HAVE_FTRACE_MCOUNT_RECORD
91 select HAVE_DYNAMIC_FTRACE
Torsten Duwe8c50b722016-03-03 15:27:00 +110092 select HAVE_DYNAMIC_FTRACE_WITH_REGS if MPROFILE_KERNEL
Steven Rostedt606576c2008-10-06 19:06:12 -040093 select HAVE_FUNCTION_TRACER
Steven Rostedt60ce8f72009-02-11 20:06:43 -050094 select HAVE_FUNCTION_GRAPH_TRACER
Catalin Marinas7ac57a82012-10-08 16:28:16 -070095 select SYSCTL_EXCEPTION_TRACE
Stephen Rothwell4febd952013-03-07 15:48:16 +110096 select VIRT_TO_BUS if !PPC64
Sam Ravnborgec7748b2008-02-09 10:46:40 +010097 select HAVE_IDE
Benjamin Herrenschmidta1f242f2008-07-23 21:27:08 -070098 select HAVE_IOREMAP_PROT
Anton Blanchard8a18cc02016-09-25 22:35:40 +100099 select HAVE_EFFICIENT_UNALIGNED_ACCESS if !(CPU_LITTLE_ENDIAN && POWER7_CPU)
Mathieu Desnoyers3f550092008-02-02 15:10:35 -0500100 select HAVE_KPROBES
Jason Wessel17ce4522008-07-23 11:30:15 -0500101 select HAVE_ARCH_KGDB
Ananth N Mavinakayanahalli9edddaa2008-03-04 14:28:37 -0800102 select HAVE_KRETPROBES
Roland McGrathdec2b0d2008-07-27 16:53:20 +1000103 select HAVE_ARCH_TRACEHOOK
Yinghai Lu95f72d12010-07-12 14:36:09 +1000104 select HAVE_MEMBLOCK
Tejun Heo1d7cfe12011-12-08 10:22:08 -0800105 select HAVE_MEMBLOCK_NODE_MAP
FUJITA Tomonori80d3e8a2009-08-04 19:08:28 +0000106 select HAVE_DMA_API_DEBUG
Steven Rostedt4e491d12008-05-14 23:49:44 -0400107 select HAVE_OPROFILE
Catalin Marinasb69ec422012-10-08 16:28:11 -0700108 select HAVE_DEBUG_KMEMLEAK
Laura Abbott308c09f2014-08-08 14:23:25 -0700109 select ARCH_HAS_SG_CHAIN
Paul Mackerrasc2e95c62009-06-12 21:10:41 +0000110 select GENERIC_ATOMIC64 if PPC32
Ingo Molnarcdd6c482009-09-21 12:02:48 +0200111 select HAVE_PERF_EVENTS
Anju Ted4a4ef2016-02-20 10:32:46 +0530112 select HAVE_PERF_REGS
Chandan Kumar17ed7c32016-04-28 15:01:08 +0530113 select HAVE_PERF_USER_STACK_DUMP
Mahesh Salgaonkar359e4282010-04-07 18:10:20 +1000114 select HAVE_REGS_AND_STACK_ACCESS_API
K.Prasad5aae8a52010-06-15 11:35:19 +0530115 select HAVE_HW_BREAKPOINT if PERF_EVENTS && PPC_BOOK3S_64
Will Deaconc1d7e012012-07-30 14:42:46 -0700116 select ARCH_WANT_IPC_PARSE_VERSION
Grant Likelyad5b7f132012-01-30 08:02:19 +0000117 select SPARSE_IRQ
Grant Likelycc79ca62012-02-16 01:37:49 -0700118 select IRQ_DOMAIN
Thomas Gleixner433c9c62011-03-25 17:04:59 +0100119 select GENERIC_IRQ_SHOW
120 select GENERIC_IRQ_SHOW_LEVEL
Thomas Gleixnere8d2c472011-10-05 02:30:51 +0000121 select IRQ_FORCED_THREADING
Peter Zijlstra26723912011-05-24 17:12:00 -0700122 select HAVE_RCU_TABLE_FREE if SMP
Ian Munsie02424d82011-02-02 17:27:24 +0000123 select HAVE_SYSCALL_TRACEPOINTS
Naveen N. Rao156d0e22016-06-22 21:55:07 +0530124 select HAVE_CBPF_JIT if !PPC64
125 select HAVE_EBPF_JIT if PPC64
Michael Ellermanac5f89c2011-06-29 19:16:59 +0000126 select HAVE_ARCH_JUMP_LABEL
Huang Yingdf013ff2011-07-13 13:14:22 +0800127 select ARCH_HAVE_NMI_SAFE_CMPXCHG
Riku Voipio957e3fa2014-12-12 16:57:44 -0800128 select ARCH_HAS_GCOV_PROFILE_ALL
Thomas Gleixner17e32ea2012-04-20 13:05:48 +0000129 select GENERIC_SMP_IDLE_THREAD
Anna-Maria Gleixnerb9ed27d2012-05-18 16:45:51 +0000130 select GENERIC_CMOS_UPDATE
John Stultz70639422012-09-04 15:34:21 -0400131 select GENERIC_TIME_VSYSCALL_OLD
Anna-Maria Gleixnerb9ed27d2012-05-18 16:45:51 +0000132 select GENERIC_CLOCKEVENTS
Preeti U Murthy0d948732014-02-26 05:39:06 +0530133 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
134 select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
Paul Mackerras16293722012-05-28 13:03:47 +1000135 select GENERIC_STRNCPY_FROM_USER
136 select GENERIC_STRNLEN_USER
David Howells786d35d2012-09-28 14:31:03 +0930137 select HAVE_MOD_ARCH_SPECIFIC
138 select MODULES_USE_ELF_RELA
Al Viro0bcfe542012-10-26 23:08:25 -0400139 select CLONE_BACKWARDS
David Woodhousefe3955c2012-12-19 15:14:17 +0000140 select ARCH_USE_BUILTIN_BSWAP
Al Viro0980cae2012-12-25 16:23:09 -0500141 select OLD_SIGSUSPEND
Al Viro09a4d5d2012-12-25 19:27:42 -0500142 select OLD_SIGACTION if PPC32
Dave Hansend1a1dc02013-07-01 13:04:42 -0700143 select HAVE_DEBUG_STACKOVERFLOW
Frederic Weisbecker62d26c82013-09-24 17:18:36 +0200144 select HAVE_IRQ_EXIT_ON_IRQ_STACK
Michael Ellerman3405d232014-01-15 18:14:28 +1100145 select ARCH_USE_CMPXCHG_LOCKREF if PPC64
AKASHI Takahiro7a017722014-02-25 18:16:24 +0900146 select HAVE_ARCH_AUDITSYSCALL
Peter Zijlstra4badad32014-06-06 19:53:16 +0200147 select ARCH_SUPPORTS_ATOMIC_RMW
Anton Blancharda75c3802014-09-19 09:40:21 +1000148 select DCACHE_WORD_ACCESS if PPC64 && CPU_LITTLE_ENDIAN
Anton Blanchard10239732014-09-17 22:15:33 +1000149 select NO_BOOTMEM
Aneesh Kumar K.Vb30e7592014-11-05 21:57:41 +0530150 select HAVE_GENERIC_RCU_GUP
Anton Blanchardc54b2bf2015-04-09 12:52:56 +1000151 select HAVE_PERF_EVENTS_NMI if PPC64
Petr Mladek42a0bb32016-05-20 17:00:33 -0700152 select HAVE_NMI if PERF_EVENTS
Borislav Petkovb01aec92015-05-21 19:59:31 +0200153 select EDAC_SUPPORT
154 select EDAC_ATOMIC_SCRUB
Benjamin Herrenschmidt817820b2015-06-24 15:25:31 +1000155 select ARCH_HAS_DMA_SET_COHERENT_MASK
Dan Williams21266be2015-11-19 18:19:29 -0800156 select ARCH_HAS_DEVMEM_IS_ALLOWED
Michael Ellerman2449acc2015-07-23 20:21:09 +1000157 select HAVE_ARCH_SECCOMP_FILTER
Daniel Axtensbf76f732016-01-20 15:00:58 -0800158 select ARCH_HAS_UBSAN_SANITIZE_ALL
Li Zhang7f2bd002016-03-17 14:20:19 -0700159 select ARCH_SUPPORTS_DEFERRED_STRUCT_PAGE_INIT
Michael Ellerman85baa092016-03-24 22:04:05 +1100160 select HAVE_LIVEPATCH if HAVE_DYNAMIC_FTRACE_WITH_REGS
Alastair D'Silva4a120272016-07-19 14:03:52 +1000161 select GENERIC_CPU_AUTOPROBE
Christophe Leroyc223c902016-05-17 08:33:46 +0200162 select HAVE_VIRT_CPU_ACCOUNTING
Kees Cook1d3c1322016-06-23 15:10:01 -0700163 select HAVE_ARCH_HARDENED_USERCOPY
Oliver O'Halloran22750d92016-09-22 16:54:30 +1000164 select HAVE_KERNEL_GZIP
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000165
Anton Blanchard7a332b02013-09-23 12:04:51 +1000166config GENERIC_CSUM
167 def_bool CPU_LITTLE_ENDIAN
168
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000169config EARLY_PRINTK
170 bool
Benjamin Herrenschmidt51d30822005-11-23 17:57:25 +1100171 default y
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000172
Jason Baronb71d47c2013-11-25 23:23:11 +0000173config PANIC_TIMEOUT
174 int
175 default 180
176
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000177config COMPAT
178 bool
179 default y if PPC64
Roland McGrath01e31db2008-01-02 17:03:11 -0800180 select COMPAT_BINFMT_ELF
Chris Metcalf48b25c42012-03-15 13:13:38 -0400181 select ARCH_WANT_OLD_COMPAT_IPC
Al Viro09a4d5d2012-12-25 19:27:42 -0500182 select COMPAT_OLD_SIGACTION
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000183
184config SYSVIPC_COMPAT
185 bool
186 depends on COMPAT && SYSVIPC
187 default y
188
189# All PPC32s use generic nvram driver through ppc_md
190config GENERIC_NVRAM
191 bool
192 default y if PPC32
193
Ingo Molnarae1e9132008-11-11 09:05:16 +0100194config SCHED_OMIT_FRAME_POINTER
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000195 bool
196 default y
197
198config ARCH_MAY_HAVE_PC_FDC
199 bool
Pranith Kumar3484a312014-08-18 17:13:41 -0400200 default PCI
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000201
Kumar Gala08264cb2006-01-10 21:43:56 -0600202config PPC_UDBG_16550
203 bool
204 default n
205
Kumar Gala08264cb2006-01-10 21:43:56 -0600206config GENERIC_TBSYNC
207 bool
208 default y if PPC32 && SMP
209 default n
210
Al Viroe65e1fc2006-09-12 03:04:40 -0400211config AUDIT_ARCH
212 bool
213 default y
214
Jeremy Fitzhardinge73c9cea2006-12-08 03:30:41 -0800215config GENERIC_BUG
216 bool
217 default y
218 depends on BUG
219
Johannes Bergb3028872007-03-20 05:18:02 +1100220config SYS_SUPPORTS_APM_EMULATION
Kumar Gala58da10b2007-05-23 09:51:46 -0500221 default y if PMAC_APM_EMU
Johannes Bergb3028872007-03-20 05:18:02 +1100222 bool
223
David Gibson6c5b59b2011-04-14 18:29:16 +0000224config EPAPR_BOOT
225 bool
226 help
227 Used to allow a board to specify it wants an ePAPR compliant wrapper.
228 default n
229
Kumar Galaf4fc4a52006-01-16 10:53:22 -0600230config DEFAULT_UIMAGE
231 bool
232 help
233 Used to allow a board to specify it wants a uImage built by default
234 default n
235
Johannes Berg801e4062007-12-08 02:12:39 +0100236config ARCH_HIBERNATION_POSSIBLE
237 bool
Johannes Berg543b9fd2007-05-03 22:31:38 +1000238 default y
239
Johannes Bergf4cb5702007-12-08 02:14:00 +0100240config ARCH_SUSPEND_POSSIBLE
241 def_bool y
Anton Vorontsov4ffd6952009-09-16 01:43:57 +0400242 depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx || \
Zhao Chenhuid0832a72012-07-20 20:42:36 +0800243 (PPC_85xx && !PPC_E500MC) || PPC_86xx || PPC_PSERIES \
244 || 44x || 40x
Johannes Bergf4cb5702007-12-08 02:14:00 +0100245
Benjamin Herrenschmidt4c75a6f2006-11-11 17:24:53 +1100246config PPC_DCR_NATIVE
247 bool
248 default n
249
250config PPC_DCR_MMIO
251 bool
252 default n
253
254config PPC_DCR
255 bool
256 depends on PPC_DCR_NATIVE || PPC_DCR_MMIO
257 default y
258
Benjamin Herrenschmidt4c9d2802006-11-11 17:25:08 +1100259config PPC_OF_PLATFORM_PCI
260 bool
Stephen Rothwell373a6da2007-12-21 15:37:07 +1100261 depends on PCI
Benjamin Herrenschmidt4c9d2802006-11-11 17:25:08 +1100262 depends on PPC64 # not supported on 32 bits yet
263 default n
264
Akinobu Mita6a11f752009-03-31 15:23:17 -0700265config ARCH_SUPPORTS_DEBUG_PAGEALLOC
Kim Phillipsce614c32015-01-26 13:22:22 -0600266 depends on PPC32 || PPC_STD_MMU_64
Akinobu Mita6a11f752009-03-31 15:23:17 -0700267 def_bool y
268
Ananth N Mavinakayanahalli8b7b80b2012-08-23 21:31:32 +0000269config ARCH_SUPPORTS_UPROBES
270 def_bool y
271
Dave Kleikamp172ae2e2010-02-08 11:50:57 +0000272config PPC_ADV_DEBUG_REGS
273 bool
274 depends on 40x || BOOKE
275 default y
276
277config PPC_ADV_DEBUG_IACS
278 int
279 depends on PPC_ADV_DEBUG_REGS
280 default 4 if 44x
281 default 2
282
283config PPC_ADV_DEBUG_DACS
284 int
285 depends on PPC_ADV_DEBUG_REGS
286 default 2
287
288config PPC_ADV_DEBUG_DVCS
289 int
290 depends on PPC_ADV_DEBUG_REGS
291 default 2 if 44x
292 default 0
293
294config PPC_ADV_DEBUG_DAC_RANGE
295 bool
296 depends on PPC_ADV_DEBUG_REGS && 44x
297 default y
298
Suzuki K. Poulose5e249d42013-01-07 00:26:57 +0000299config PPC_EMULATE_SSTEP
300 bool
301 default y if KPROBES || UPROBES || XMON || HAVE_HW_BREAKPOINT
302
Scott Wood1c980252014-08-08 18:40:42 -0500303config ZONE_DMA32
304 bool
305 default y if PPC64
306
Kirill A. Shutemov06ef42a2015-04-14 15:45:57 -0700307config PGTABLE_LEVELS
308 int
309 default 2 if !PPC64
Aneesh Kumar K.V368ced72016-03-01 09:45:13 +0530310 default 3 if PPC_64K_PAGES && !PPC_BOOK3S_64
Kirill A. Shutemov06ef42a2015-04-14 15:45:57 -0700311 default 4
312
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000313source "init/Kconfig"
314
Matt Helsleydc52ddc2008-10-18 20:27:21 -0700315source "kernel/Kconfig.freezer"
316
Benjamin Herrenschmidta2d2e1e2007-12-21 15:39:24 +1100317source "arch/powerpc/sysdev/Kconfig"
Kumar Gala4330f5d2007-03-16 09:32:17 -0500318source "arch/powerpc/platforms/Kconfig"
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000319
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000320menu "Kernel options"
321
322config HIGHMEM
323 bool "High memory support"
324 depends on PPC32
325
326source kernel/Kconfig.hz
327source kernel/Kconfig.preempt
328source "fs/Kconfig.binfmt"
329
Mel Gormanba72cb82007-11-28 16:21:13 -0800330config HUGETLB_PAGE_SIZE_VARIABLE
331 bool
332 depends on HUGETLB_PAGE
333 default y
334
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000335config MATH_EMULATION
336 bool "Math emulation"
Benjamin Herrenschmidt4e63f8e2013-06-09 17:01:24 +1000337 depends on 4xx || 8xx || PPC_MPC832x || BOOKE
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000338 ---help---
339 Some PowerPC chips designed for embedded applications do not have
340 a floating-point unit and therefore do not implement the
341 floating-point instructions in the PowerPC instruction set. If you
342 say Y here, the kernel will include code to emulate a floating-point
343 unit, which will allow programs that use floating-point
344 instructions to run.
345
Benjamin Herrenschmidt4e63f8e2013-06-09 17:01:24 +1000346 This is also useful to emulate missing (optional) instructions
347 such as fsqrt on cores that do have an FPU but do not implement
348 them (such as Freescale BookE).
349
Kevin Haoe05c0e82013-07-16 19:57:15 +0800350choice
351 prompt "Math emulation options"
352 default MATH_EMULATION_FULL
353 depends on MATH_EMULATION
354
355config MATH_EMULATION_FULL
356 bool "Emulate all the floating point instructions"
357 ---help---
358 Select this option will enable the kernel to support to emulate
359 all the floating point instructions. If your SoC doesn't have
360 a FPU, you should select this.
361
362config MATH_EMULATION_HW_UNIMPLEMENTED
363 bool "Just emulate the FPU unimplemented instructions"
364 ---help---
365 Select this if you know there does have a hardware FPU on your
366 SoC, but some floating point instructions are not implemented by that.
367
368endchoice
369
Michael Neuling3d72bbc2013-02-13 16:21:43 +0000370config PPC_TRANSACTIONAL_MEM
371 bool "Transactional Memory support for POWERPC"
372 depends on PPC_BOOK3S_64
373 depends on SMP
Michael Neuling7b37a122014-01-08 21:25:31 +1100374 select ALTIVEC
375 select VSX
Michael Neuling3d72bbc2013-02-13 16:21:43 +0000376 default n
377 ---help---
378 Support user-mode Transactional Memory on POWERPC.
379
Torsten Duwe8c50b722016-03-03 15:27:00 +1100380config DISABLE_MPROFILE_KERNEL
381 bool "Disable use of mprofile-kernel for kernel tracing"
382 depends on PPC64 && CPU_LITTLE_ENDIAN
383 default y
384 help
385 Selecting this options disables use of the mprofile-kernel ABI for
386 kernel tracing. That will cause options such as live patching
387 (CONFIG_LIVEPATCH) which depend on CONFIG_DYNAMIC_FTRACE_WITH_REGS to
388 be disabled also.
389
390 If you have a toolchain which supports mprofile-kernel, then you can
391 enable this. Otherwise leave it disabled. If you're not sure, say
392 "N".
393
394config MPROFILE_KERNEL
395 depends on PPC64 && CPU_LITTLE_ENDIAN
396 def_bool !DISABLE_MPROFILE_KERNEL
397
FUJITA Tomonorifb3475e2008-02-04 22:28:08 -0800398config IOMMU_HELPER
399 def_bool PPC64
400
Becky Bruceec3cf2e2009-05-14 12:42:28 +0000401config SWIOTLB
402 bool "SWIOTLB support"
403 default n
404 select IOMMU_HELPER
405 ---help---
406 Support for IO bounce buffering for systems without an IOMMU.
407 This allows us to DMA to the full physical address space on
408 platforms where the size of a physical address is larger
409 than the bus address. Not all platforms support this.
410
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000411config HOTPLUG_CPU
412 bool "Support for enabling/disabling CPUs"
Stephen Rothwell40b31362013-05-21 13:49:35 +1000413 depends on SMP && (PPC_PSERIES || \
chenhui zhao2f4f1f82015-11-20 17:14:01 +0800414 PPC_PMAC || PPC_POWERNV || FSL_SOC_BOOKE)
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000415 ---help---
416 Say Y here to be able to disable and re-enable individual
417 CPUs at runtime on SMP machines.
418
419 Say N if you are unsure.
420
Nathan Fontenot12633e82009-11-25 17:23:25 +0000421config ARCH_CPU_PROBE_RELEASE
422 def_bool y
423 depends on HOTPLUG_CPU
424
Yasunori Gotocc576372006-06-29 02:24:27 -0700425config ARCH_ENABLE_MEMORY_HOTPLUG
426 def_bool y
427
Badari Pulavartya99824f2008-02-05 00:10:18 -0800428config ARCH_HAS_WALK_MEMORY
429 def_bool y
430
Badari Pulavarty14824712008-02-05 00:10:17 -0800431config ARCH_ENABLE_MEMORY_HOTREMOVE
432 def_bool y
433
Mahesh Salgaonkarf2296a32013-11-15 09:50:50 +0530434config PPC64_SUPPORTS_MEMORY_FAILURE
435 bool "Add support for memory hwpoison"
436 depends on PPC_BOOK3S_64
437 default "y" if PPC_POWERNV
438 select ARCH_SUPPORTS_MEMORY_FAILURE
439
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000440config KEXEC
Kees Cook642e56f2013-01-16 18:53:25 -0800441 bool "kexec system call"
Tiejun Chen96eea642015-10-06 22:48:22 -0500442 depends on (PPC_BOOK3S || FSL_BOOKE || (44x && !SMP)) || PPC_BOOK3E
Dave Young2965faa2015-09-09 15:38:55 -0700443 select KEXEC_CORE
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000444 help
445 kexec is a system call that implements the ability to shutdown your
446 current kernel, and to start another kernel. It is like a reboot
Matt LaPlante1f1332f2006-06-29 01:32:47 -0400447 but it is independent of the system firmware. And like a reboot
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000448 you can start any kernel with it, not just Linux.
449
Matt LaPlante1f1332f2006-06-29 01:32:47 -0400450 The name comes from the similarity to the exec system call.
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000451
452 It is an ongoing process to be certain the hardware in a machine
453 is properly shutdown, so do not be surprised if this code does not
Geert Uytterhoevenbf220692013-08-20 21:38:03 +0200454 initially work for you. As of this writing the exact hardware
455 interface is strongly in flux, so no good recommendation can be
456 made.
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000457
Kevin Hao4c91bd62016-07-13 09:14:39 +0800458config RELOCATABLE
459 bool "Build a relocatable kernel"
460 depends on (PPC64 && !COMPILE_TEST) || (FLATMEM && (44x || FSL_BOOKE))
461 select NONSTATIC_KERNEL
462 help
463 This builds a kernel image that is capable of running at the
464 location the kernel is loaded at. For ppc32, there is no any
465 alignment restrictions, and this feature is a superset of
466 DYNAMIC_MEMSTART and hence overrides it. For ppc64, we should use
467 16k-aligned base address. The kernel is linked as a
468 position-independent executable (PIE) and contains dynamic relocations
469 which are processed early in the bootup process.
470
471 One use is for the kexec on panic case where the recovery kernel
472 must live at a different physical address than the primary
473 kernel.
474
475 Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address
476 it has been loaded at and the compile time physical addresses
477 CONFIG_PHYSICAL_START is ignored. However CONFIG_PHYSICAL_START
478 setting can still be useful to bootwrappers that need to know the
479 load address of the kernel (eg. u-boot/mkimage).
480
Haren Mynenie8625d462006-01-14 13:48:25 -0800481config CRASH_DUMP
Bernhard Walle3420b5d2008-06-27 03:02:15 +1000482 bool "Build a kdump crash kernel"
Suzuki Poulose47da4212012-04-15 22:27:35 +0000483 depends on PPC64 || 6xx || FSL_BOOKE || (44x && !SMP)
Guenter Roeckfb43e842014-06-30 11:45:30 -0700484 select RELOCATABLE if (PPC64 && !COMPILE_TEST) || 44x || FSL_BOOKE
Haren Mynenie8625d462006-01-14 13:48:25 -0800485 help
486 Build a kernel suitable for use as a kdump capture kernel.
Mohan Kumar M54622f12008-10-21 17:38:10 +0000487 The same kernel binary can be used as production kernel and dump
488 capture kernel.
Haren Mynenie8625d462006-01-14 13:48:25 -0800489
Mahesh Salgaonkareb39c882012-02-16 01:14:22 +0000490config FA_DUMP
491 bool "Firmware-assisted dump"
Michael Ellerman90890b12013-10-28 15:00:35 +1100492 depends on PPC64 && PPC_RTAS && CRASH_DUMP && KEXEC
Manish Ahuja242f2712008-03-22 10:50:50 +1100493 help
Mahesh Salgaonkareb39c882012-02-16 01:14:22 +0000494 A robust mechanism to get reliable kernel crash dump with
495 assistance from firmware. This approach does not use kexec,
496 instead firmware assists in booting the kdump kernel
497 while preserving memory contents. Firmware-assisted dump
498 is meant to be a kdump replacement offering robustness and
499 speed not possible without system firmware assistance.
Manish Ahuja242f2712008-03-22 10:50:50 +1100500
501 If unsure, say "N"
502
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000503config IRQ_ALL_CPUS
504 bool "Distribute interrupts on all CPUs by default"
Paul Bolle6cf09b92013-05-15 11:21:01 +0200505 depends on SMP
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000506 help
507 This option gives the kernel permission to distribute IRQs across
508 multiple CPUs. Saying N here will route all IRQs to the first
509 CPU. Generally saying Y is safe, although some problems have been
510 reported with SMP Power Macintoshes with this option enabled.
511
Andy Whitcroftffa27b62005-10-28 17:46:58 -0700512config NUMA
513 bool "NUMA support"
514 depends on PPC64
515 default y if SMP && PPC_PSERIES
516
Yasunori Gotoc80d79d2006-04-10 22:53:53 -0700517config NODES_SHIFT
518 int
Anton Blanchardea55bf22009-09-21 19:56:43 +0000519 default "8" if PPC64
Yasunori Gotoc80d79d2006-04-10 22:53:53 -0700520 default "4"
521 depends on NEED_MULTIPLE_NODES
522
Nishanth Aravamudan8c272262014-05-19 11:14:23 -0700523config USE_PERCPU_NUMA_NODE_ID
524 def_bool y
525 depends on NUMA
526
Nishanth Aravamudan64bb80d2014-05-16 16:41:20 -0700527config HAVE_MEMORYLESS_NODES
528 def_bool y
529 depends on NUMA
530
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000531config ARCH_SELECT_MEMORY_MODEL
532 def_bool y
533 depends on PPC64
534
535config ARCH_FLATMEM_ENABLE
Andy Whitcroft9100b202005-11-29 19:20:55 +0000536 def_bool y
537 depends on (PPC64 && !NUMA) || PPC32
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000538
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000539config ARCH_SPARSEMEM_ENABLE
540 def_bool y
Andy Whitcroft9100b202005-11-29 19:20:55 +0000541 depends on PPC64
Andy Whitcroftd29eff72007-10-16 01:24:17 -0700542 select SPARSEMEM_VMEMMAP_ENABLE
Anton Blanchard45fb6ce2005-11-11 14:22:35 +1100543
544config ARCH_SPARSEMEM_DEFAULT
545 def_bool y
Benjamin Herrenschmidt78bde532007-02-13 11:46:06 +1100546 depends on (SMP && PPC_PSERIES) || PPC_PS3
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000547
Benjamin Herrenschmidt5a1eb5c2009-10-30 15:03:54 +1100548config SYS_SUPPORTS_HUGETLBFS
Becky Bruce41151e72011-06-28 09:54:48 +0000549 bool
Benjamin Herrenschmidt5a1eb5c2009-10-30 15:03:54 +1100550
Mel Gormanc67c3cb2006-09-27 01:49:49 -0700551source "mm/Kconfig"
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000552
Mike Kravetz7e9191d2005-11-07 09:39:48 -0800553config ARCH_MEMORY_PROBE
554 def_bool y
555 depends on MEMORY_HOTPLUG
556
Andy Whitcroft75167952006-10-21 10:24:14 -0700557# Some NUMA nodes have memory ranges that span
558# other nodes. Even though a pfn is valid and
559# between a node's start and end pfns, it may not
560# reside on that node. See memmap_init_zone()
561# for details.
562config NODES_SPAN_OTHER_NODES
563 def_bool y
564 depends on NEED_MULTIPLE_NODES
565
Yuri Tikhonove1240122009-01-29 01:40:44 +0000566config STDBINUTILS
567 bool "Using standard binutils settings"
568 depends on 44x
569 default y
570 help
571 Turning this option off allows you to select 256KB PAGE_SIZE on 44x.
572 Note, that kernel will be able to run only those applications,
573 which had been compiled using binutils later than 2.17.50.0.3 with
574 '-zmax-page-size' set to 256K (the default is 64K). Or, if using
575 the older binutils, you can patch them with a trivial patch, which
576 changes the ELF_MAXPAGESIZE definition from 0x10000 to 0x40000.
577
Ilya Yanokca9153a2008-12-11 04:55:41 +0300578choice
579 prompt "Page size"
580 default PPC_4K_PAGES
Benjamin Herrenschmidt3c726f82005-11-07 11:06:55 +1100581 help
Ilya Yanokca9153a2008-12-11 04:55:41 +0300582 Select the kernel logical page size. Increasing the page size
583 will reduce software overhead at each page boundary, allow
584 hardware prefetch mechanisms to be more effective, and allow
585 larger dma transfers increasing IO efficiency and reducing
586 overhead. However the utilization of memory will increase.
587 For example, each cached file will using a multiple of the
588 page size to hold its contents and the difference between the
589 end of file and the end of page is wasted.
590
591 Some dedicated systems, such as software raid serving with
592 accelerated calculations, have shown significant increases.
593
594 If you configure a 64 bit kernel for 64k pages but the
595 processor does not support them, then the kernel will simulate
596 them with 4k pages, loading them on demand, but with the
597 reduced software overhead and larger internal fragmentation.
598 For the 32 bit kernel, a large page option will not be offered
599 unless it is supported by the configured processor.
600
601 If unsure, choose 4K_PAGES.
602
603config PPC_4K_PAGES
604 bool "4k page size"
Aneesh Kumar K.V19f97c92016-01-29 22:32:49 +0530605 select HAVE_ARCH_SOFT_DIRTY if PPC_BOOK3S_64
Ilya Yanokca9153a2008-12-11 04:55:41 +0300606
607config PPC_16K_PAGES
Michael Ellerman55f8b5b2015-08-07 16:19:46 +1000608 bool "16k page size"
609 depends on 44x || PPC_8xx
Ilya Yanokca9153a2008-12-11 04:55:41 +0300610
611config PPC_64K_PAGES
Michael Ellerman55f8b5b2015-08-07 16:19:46 +1000612 bool "64k page size"
613 depends on !PPC_FSL_BOOK3E && (44x || PPC_STD_MMU_64 || PPC_BOOK3E_64)
Aneesh Kumar K.V19f97c92016-01-29 22:32:49 +0530614 select HAVE_ARCH_SOFT_DIRTY if PPC_BOOK3S_64
Ilya Yanokca9153a2008-12-11 04:55:41 +0300615
Yuri Tikhonove1240122009-01-29 01:40:44 +0000616config PPC_256K_PAGES
Michael Ellerman55f8b5b2015-08-07 16:19:46 +1000617 bool "256k page size"
618 depends on 44x && !STDBINUTILS
Yuri Tikhonove1240122009-01-29 01:40:44 +0000619 help
620 Make the page size 256k.
621
622 As the ELF standard only requires alignment to support page
623 sizes up to 64k, you will need to compile all of your user
624 space applications with a non-standard binutils settings
625 (see the STDBINUTILS description for details).
626
627 Say N unless you know what you are doing.
628
Ilya Yanokca9153a2008-12-11 04:55:41 +0300629endchoice
Benjamin Herrenschmidt3c726f82005-11-07 11:06:55 +1100630
Stephen Rothwell53bcddb2008-04-11 11:11:56 +1000631config FORCE_MAX_ZONEORDER
632 int "Maximum zone order"
Rashmica Guptaa7ee5392016-02-19 16:38:47 +1100633 range 8 9 if PPC64 && PPC_64K_PAGES
Benjamin Herrenschmidt066c4b82009-07-21 15:25:53 +0000634 default "9" if PPC64 && PPC_64K_PAGES
Aneesh Kumar K.Vd5a1e422016-09-19 23:01:33 +0530635 range 13 13 if PPC64 && !PPC_64K_PAGES
Benjamin Herrenschmidt066c4b82009-07-21 15:25:53 +0000636 default "13" if PPC64 && !PPC_64K_PAGES
637 range 9 64 if PPC32 && PPC_16K_PAGES
638 default "9" if PPC32 && PPC_16K_PAGES
639 range 7 64 if PPC32 && PPC_64K_PAGES
640 default "7" if PPC32 && PPC_64K_PAGES
641 range 5 64 if PPC32 && PPC_256K_PAGES
642 default "5" if PPC32 && PPC_256K_PAGES
Johannes Bergebe40c52008-09-24 04:29:08 +0000643 range 11 64
Stephen Rothwell53bcddb2008-04-11 11:11:56 +1000644 default "11"
645 help
646 The kernel memory allocator divides physically contiguous memory
647 blocks into "zones", where each zone is a power of two number of
648 pages. This option selects the largest power of two that the kernel
649 keeps in the memory allocator. If you need to allocate very large
650 blocks of physically contiguous memory, then you may need to
651 increase this value.
652
653 This config option is actually maximum order plus one. For example,
654 a value of 11 means that the largest free memory block is 2^10 pages.
655
656 The page size is not necessarily 4KB. For example, on 64-bit
657 systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES. Keep
658 this in mind when choosing a value for this option.
659
Paul Mackerrasfa282372008-01-24 08:35:13 +1100660config PPC_SUBPAGE_PROT
661 bool "Support setting protections for 4k subpages"
Ilya Yanokca9153a2008-12-11 04:55:41 +0300662 depends on PPC_STD_MMU_64 && PPC_64K_PAGES
Paul Mackerrasfa282372008-01-24 08:35:13 +1100663 help
664 This option adds support for a system call to allow user programs
665 to set access permissions (read/write, readonly, or no access)
666 on the 4k subpages of each 64k page.
667
Ian Munsiee83d0162014-10-08 19:54:50 +1100668config PPC_COPRO_BASE
669 bool
670 default n
671
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000672config SCHED_SMT
673 bool "SMT (Hyperthreading) scheduler support"
674 depends on PPC64 && SMP
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000675 help
676 SMT scheduler support improves the CPU scheduler's decision making
677 when dealing with POWER5 cpus at a cost of slightly increased
678 overhead in some places. If unsure say N here.
679
Michael Neulingb92a66a2012-09-10 00:35:26 +0000680config PPC_DENORMALISATION
681 bool "PowerPC denormalisation exception handling"
682 depends on PPC_BOOK3S_64
Anton Blanchard4e90a2a2013-07-31 16:31:26 +1000683 default "y" if PPC_POWERNV
Michael Neulingb92a66a2012-09-10 00:35:26 +0000684 ---help---
685 Add support for handling denormalisation of single precision
686 values. Useful for bare metal only. If unsure say Y here.
687
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000688config CMDLINE_BOOL
689 bool "Default bootloader kernel arguments"
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000690
691config CMDLINE
692 string "Initial kernel command string"
693 depends on CMDLINE_BOOL
694 default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
695 help
696 On some platforms, there is currently no way for the boot loader to
697 pass arguments to the kernel. For these platforms, you can supply
698 some command-line options at build time by entering them here. In
699 most cases you will need to specify the root device here.
700
Sebastian Siewioreb3b80f2014-02-20 21:48:17 +0100701config CMDLINE_FORCE
702 bool "Always use the default kernel command string"
703 depends on CMDLINE_BOOL
704 help
705 Always use the default kernel command string, even if the boot
706 loader passes other arguments to the kernel.
707 This is useful if you cannot or don't want to change the
708 command-line options your boot loader passes to the kernel.
709
Grant Likelyc356aa42008-07-09 09:41:52 -0600710config EXTRA_TARGETS
711 string "Additional default image types"
712 help
713 List additional targets to be built by the bootwrapper here (separated
714 by spaces). This is useful for targets that depend of device tree
715 files in the .dts directory.
716
717 Targets in this list will be build as part of the default build
718 target, or when the user does a 'make zImage' or a
719 'make zImage.initrd'.
720
721 If unsure, leave blank
722
Johannes Bergb28f5082008-01-15 23:17:00 -0500723config ARCH_WANTS_FREEZER_CONTROL
724 def_bool y
725 depends on ADB_PMU
726
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000727source kernel/power/Kconfig
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000728
729config SECCOMP
730 bool "Enable seccomp to safely compute untrusted bytecode"
731 depends on PROC_FS
732 default y
733 help
734 This kernel feature is useful for number crunching applications
735 that may need to compute untrusted bytecode during their
736 execution. By using pipes or other transports made available to
737 the process as file descriptors supporting the read/write
738 syscalls, it's possible to isolate those applications in
739 their own address space using seccomp. Once seccomp is
740 enabled via /proc/<pid>/seccomp, it cannot be disabled
741 and the task is only allowed to execute a few safe syscalls
742 defined by each seccomp mode.
743
744 If unsure, say Y. Only embedded should say N here.
745
746endmenu
747
748config ISA_DMA_API
749 bool
Stephen Rothwell3d066d72012-02-22 14:10:12 +0000750 default PCI
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000751
752menu "Bus options"
753
754config ISA
755 bool "Support for ISA-bus hardware"
Paul Bolle933ee712013-03-27 00:47:03 +0000756 depends on PPC_CHRP
Paul Mackerrasf9bd1702005-10-26 16:47:42 +1000757 select PPC_I8259
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000758 help
759 Find out whether you have ISA slots on your motherboard. ISA is the
760 name of a bus system, i.e. the way the CPU talks to the other stuff
761 inside your box. If you have an Apple machine, say N here; if you
Paul Bolle933ee712013-03-27 00:47:03 +0000762 have an IBM RS/6000 or pSeries machine, say Y. If you have an
763 embedded board, consult your board documentation.
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000764
Christoph Lameter5ac6da62007-02-10 01:43:14 -0800765config ZONE_DMA
766 bool
767 default y
768
FUJITA Tomonoriaf407c62010-03-10 15:23:27 -0800769config NEED_DMA_MAP_STATE
770 def_bool (PPC64 || NOT_COHERENT_CACHE)
771
FUJITA Tomonorie32205e2010-05-26 14:44:33 -0700772config NEED_SG_DMA_LENGTH
773 def_bool y
774
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000775config GENERIC_ISA_DMA
776 bool
Anton Vorontsov19274452010-07-15 07:38:16 +0000777 depends on ISA_DMA_API
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000778 default y
779
Paul Mackerras25635c72005-10-26 16:36:55 +1000780config PPC_INDIRECT_PCI
781 bool
782 depends on PCI
Becky Bruce63dafe52006-01-14 16:57:39 -0600783 default y if 40x || 44x
Paul Mackerras25635c72005-10-26 16:36:55 +1000784 default n
785
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000786config EISA
787 bool
788
789config SBUS
790 bool
791
Kumar Gala08264cb2006-01-10 21:43:56 -0600792config FSL_SOC
793 bool
794
Roy Zang55c44992007-07-10 18:44:34 +0800795config FSL_PCI
796 bool
797 select PPC_INDIRECT_PCI
Kumar Galad0839112009-01-28 13:25:29 -0600798 select PCI_QUIRKS
Roy Zang55c44992007-07-10 18:44:34 +0800799
Anton Vorontsov4ffd6952009-09-16 01:43:57 +0400800config FSL_PMC
801 bool
802 default y
803 depends on SUSPEND && (PPC_85xx || PPC_86xx)
804 help
805 Freescale MPC85xx/MPC86xx power management controller support
806 (suspend/resume). For MPC83xx see platforms/83xx/suspend.c
807
Victor Gallardod164f6d2010-10-08 10:25:27 +0000808config PPC4xx_CPM
809 bool
810 default y
811 depends on SUSPEND && (44x || 40x)
812 help
813 PPC4xx Clock Power Management (CPM) support (suspend/resume).
814 It also enables support for two different idle states (idle-wait
815 and idle-doze).
816
Stefan Roese2a706912008-03-26 22:39:50 +1100817config 4xx_SOC
818 bool
819
Anton Vorontsovacaa7aa2008-04-11 21:03:40 +0400820config FSL_LBC
Roy Zang3ab8f2a2010-10-18 15:22:31 +0800821 bool "Freescale Local Bus support"
Anton Vorontsovacaa7aa2008-04-11 21:03:40 +0400822 help
Roy Zang3ab8f2a2010-10-18 15:22:31 +0800823 Enables reporting of errors from the Freescale local bus
824 controller. Also contains some common code used by
825 drivers for specific local bus peripherals.
Anton Vorontsovacaa7aa2008-04-11 21:03:40 +0400826
Anton Vorontsov83ff9dc2008-05-23 20:38:54 +0400827config FSL_GTM
828 bool
829 depends on PPC_83xx || QUICC_ENGINE || CPM2
830 help
831 Freescale General-purpose Timers support
832
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000833# Yes MCA RS/6000s exist but Linux-PPC does not currently support any
834config MCA
835 bool
836
John Rigbyb5005632008-06-26 11:07:56 -0600837# Platforms that what PCI turned unconditionally just do select PCI
838# in their config node. Platforms that want to choose at config
839# time should select PPC_PCI_CHOICE
840config PPC_PCI_CHOICE
841 bool
842
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000843config PCI
John Rigbyb5005632008-06-26 11:07:56 -0600844 bool "PCI support" if PPC_PCI_CHOICE
845 default y if !40x && !CPM2 && !8xx && !PPC_83xx \
Albert Herranzbcc48592009-12-12 06:31:39 +0000846 && !PPC_85xx && !PPC_86xx && !GAMECUBE_COMMON
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000847 default PCI_QSPAN if !4xx && !CPM2 && 8xx
Michael S. Tsirkin335b8cf2011-11-24 21:06:41 +0200848 select GENERIC_PCI_IOMAP
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000849 help
850 Find out whether your system includes a PCI bus. PCI is the name of
851 a bus system, i.e. the way the CPU talks to the other stuff inside
852 your box. If you say Y here, the kernel will include drivers and
853 infrastructure code to support PCI bus devices.
854
855config PCI_DOMAINS
Matthew Wilcox36e23592007-07-10 10:54:40 -0600856 def_bool PCI
857
858config PCI_SYSCALL
859 def_bool PCI
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000860
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000861config PCI_QSPAN
862 bool "QSpan PCI"
863 depends on !4xx && !CPM2 && 8xx
Paul Mackerrasf9bd1702005-10-26 16:47:42 +1000864 select PPC_I8259
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000865 help
866 Say Y here if you have a system based on a Motorola 8xx-series
867 embedded processor with a QSPAN PCI interface, otherwise say N.
868
869config PCI_8260
870 bool
871 depends on PCI && 8260
Paul Mackerras25635c72005-10-26 16:36:55 +1000872 select PPC_INDIRECT_PCI
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000873 default y
874
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000875source "drivers/pci/Kconfig"
876
877source "drivers/pcmcia/Kconfig"
878
Zhang Weif1f389d2008-04-18 13:33:39 -0700879config HAS_RAPIDIO
880 bool
881 default n
882
883config RAPIDIO
Alexandre Bounine56abde72014-01-23 15:56:04 -0800884 tristate "RapidIO support"
Alexandre Bounine388b78a2011-03-23 16:43:03 -0700885 depends on HAS_RAPIDIO || PCI
Zhang Weif1f389d2008-04-18 13:33:39 -0700886 help
887 If you say Y here, the kernel will include drivers and
888 infrastructure code to support RapidIO interconnect devices.
889
Alexandre Bounine388b78a2011-03-23 16:43:03 -0700890config FSL_RIO
891 bool "Freescale Embedded SRIO Controller support"
Alexandre Bounine56abde72014-01-23 15:56:04 -0800892 depends on RAPIDIO = y && HAS_RAPIDIO
Alexandre Bounine388b78a2011-03-23 16:43:03 -0700893 default "n"
894 ---help---
895 Include support for RapidIO controller on Freescale embedded
896 processors (MPC8548, MPC8641, etc).
897
Zhang Weif1f389d2008-04-18 13:33:39 -0700898source "drivers/rapidio/Kconfig"
899
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000900endmenu
901
Suzuki Poulose0f890c82011-12-14 22:57:15 +0000902config NONSTATIC_KERNEL
903 bool
904 default n
905
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000906menu "Advanced setup"
907 depends on PPC32
908
909config ADVANCED_OPTIONS
910 bool "Prompt for advanced kernel configuration options"
911 help
912 This option will enable prompting for a variety of advanced kernel
913 configuration options. These options can cause the kernel to not
914 work if they are set incorrectly, but can be used to optimize certain
915 aspects of kernel memory management.
916
917 Unless you know what you are doing, say N here.
918
919comment "Default settings for advanced configuration options are used"
920 depends on !ADVANCED_OPTIONS
921
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000922config LOWMEM_SIZE_BOOL
923 bool "Set maximum low memory"
924 depends on ADVANCED_OPTIONS
925 help
926 This option allows you to set the maximum amount of memory which
927 will be used as "low memory", that is, memory which the kernel can
928 access directly, without having to set up a kernel virtual mapping.
929 This can be useful in optimizing the layout of kernel virtual
930 memory.
931
932 Say N here unless you know what you are doing.
933
934config LOWMEM_SIZE
935 hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
936 default "0x30000000"
937
Trent Piepho96051462008-12-08 19:34:58 -0800938config LOWMEM_CAM_NUM_BOOL
939 bool "Set number of CAMs to use to map low memory"
940 depends on ADVANCED_OPTIONS && FSL_BOOKE
941 help
942 This option allows you to set the maximum number of CAM slots that
943 will be used to map low memory. There are a limited number of slots
944 available and even more limited number that will fit in the L1 MMU.
945 However, using more entries will allow mapping more low memory. This
946 can be useful in optimizing the layout of kernel virtual memory.
947
948 Say N here unless you know what you are doing.
949
950config LOWMEM_CAM_NUM
Josh Boyer9b71dbd2009-03-31 08:05:50 -0400951 depends on FSL_BOOKE
Trent Piepho96051462008-12-08 19:34:58 -0800952 int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL
953 default 3
954
Suzuki Poulose0f890c82011-12-14 22:57:15 +0000955config DYNAMIC_MEMSTART
Kees Cook642e56f2013-01-16 18:53:25 -0800956 bool "Enable page aligned dynamic load address for kernel"
957 depends on ADVANCED_OPTIONS && FLATMEM && (FSL_BOOKE || 44x)
Suzuki Poulose0f890c82011-12-14 22:57:15 +0000958 select NONSTATIC_KERNEL
Kumar Gala37dd2ba2008-04-22 04:22:34 +1000959 help
Suzuki Poulose0f890c82011-12-14 22:57:15 +0000960 This option enables the kernel to be loaded at any page aligned
961 physical address. The kernel creates a mapping from KERNELBASE to
962 the address where the kernel is loaded. The page size here implies
963 the TLB page size of the mapping for kernel on the particular platform.
964 Please refer to the init code for finding the TLB page size.
Kumar Gala37dd2ba2008-04-22 04:22:34 +1000965
Suzuki Poulose0f890c82011-12-14 22:57:15 +0000966 DYNAMIC_MEMSTART is an easy way of implementing pseudo-RELOCATABLE
967 kernel image, where the only restriction is the page aligned kernel
968 load address. When this option is enabled, the compile time physical
969 address CONFIG_PHYSICAL_START is ignored.
Kumar Gala37dd2ba2008-04-22 04:22:34 +1000970
Suzuki Poulose9c5f7d32011-12-14 22:58:12 +0000971 This option is overridden by CONFIG_RELOCATABLE
972
Kumar Gala37dd2ba2008-04-22 04:22:34 +1000973config PAGE_OFFSET_BOOL
974 bool "Set custom page offset address"
975 depends on ADVANCED_OPTIONS
976 help
977 This option allows you to set the kernel virtual address at which
978 the kernel will map low memory. This can be useful in optimizing
979 the virtual memory layout of the system.
980
981 Say N here unless you know what you are doing.
982
983config PAGE_OFFSET
984 hex "Virtual address of memory base" if PAGE_OFFSET_BOOL
985 default "0xc0000000"
986
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000987config KERNEL_START_BOOL
988 bool "Set custom kernel base address"
989 depends on ADVANCED_OPTIONS
990 help
991 This option allows you to set the kernel virtual address at which
Kumar Gala37dd2ba2008-04-22 04:22:34 +1000992 the kernel will be loaded. Normally this should match PAGE_OFFSET
993 however there are times (like kdump) that one might not want them
994 to be the same.
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000995
996 Say N here unless you know what you are doing.
997
998config KERNEL_START
999 hex "Virtual address of kernel base" if KERNEL_START_BOOL
Kumar Gala37dd2ba2008-04-22 04:22:34 +10001000 default PAGE_OFFSET if PAGE_OFFSET_BOOL
Suzuki Poulose0f890c82011-12-14 22:57:15 +00001001 default "0xc2000000" if CRASH_DUMP && !NONSTATIC_KERNEL
Paul Mackerras14cf11a2005-09-26 16:04:21 +10001002 default "0xc0000000"
1003
Kumar Gala37dd2ba2008-04-22 04:22:34 +10001004config PHYSICAL_START_BOOL
1005 bool "Set physical address where the kernel is loaded"
1006 depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE
1007 help
1008 This gives the physical address where the kernel is loaded.
1009
1010 Say N here unless you know what you are doing.
1011
1012config PHYSICAL_START
1013 hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL
Suzuki Poulose0f890c82011-12-14 22:57:15 +00001014 default "0x02000000" if PPC_STD_MMU && CRASH_DUMP && !NONSTATIC_KERNEL
Kumar Gala37dd2ba2008-04-22 04:22:34 +10001015 default "0x00000000"
1016
1017config PHYSICAL_ALIGN
1018 hex
Trent Piephoc8f35702008-12-08 19:34:59 -08001019 default "0x04000000" if FSL_BOOKE
Kumar Gala37dd2ba2008-04-22 04:22:34 +10001020 help
1021 This value puts the alignment restrictions on physical address
1022 where kernel is loaded and run from. Kernel is compiled for an
1023 address which meets above alignment restriction.
1024
Paul Mackerras14cf11a2005-09-26 16:04:21 +10001025config TASK_SIZE_BOOL
1026 bool "Set custom user task size"
1027 depends on ADVANCED_OPTIONS
1028 help
1029 This option allows you to set the amount of virtual address space
1030 allocated to user tasks. This can be useful in optimizing the
1031 virtual memory layout of the system.
1032
1033 Say N here unless you know what you are doing.
1034
1035config TASK_SIZE
1036 hex "Size of user task space" if TASK_SIZE_BOOL
Paul Bolle933ee712013-03-27 00:47:03 +00001037 default "0x80000000" if PPC_8xx
Kumar Gala4d9e55102007-10-11 13:40:21 -05001038 default "0xc0000000"
Paul Mackerras14cf11a2005-09-26 16:04:21 +10001039
Benjamin Herrenschmidt84532a02009-05-27 13:33:14 +10001040config CONSISTENT_SIZE_BOOL
1041 bool "Set custom consistent memory pool size"
1042 depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
1043 help
1044 This option allows you to set the size of the
1045 consistent memory pool. This pool of virtual memory
1046 is used to make consistent memory allocations.
1047
1048config CONSISTENT_SIZE
1049 hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
1050 default "0x00200000" if NOT_COHERENT_CACHE
1051
Paul Mackerras14cf11a2005-09-26 16:04:21 +10001052config PIN_TLB
1053 bool "Pinned Kernel TLBs (860 ONLY)"
1054 depends on ADVANCED_OPTIONS && 8xx
Christophe Leroy62f64b42016-05-17 09:02:56 +02001055
1056config PIN_TLB_IMMR
1057 bool "Pinned TLB for IMMR"
1058 depends on PIN_TLB
1059 default y
Paul Mackerras14cf11a2005-09-26 16:04:21 +10001060endmenu
1061
Stephen Rothwellcabb5582005-09-30 16:16:52 +10001062if PPC64
Paul Mackerrasbdbc29c2013-08-27 16:07:49 +10001063# This value must have zeroes in the bottom 60 bits otherwise lots will break
Kumar Gala37dd2ba2008-04-22 04:22:34 +10001064config PAGE_OFFSET
Stephen Rothwellcabb5582005-09-30 16:16:52 +10001065 hex
Stephen Rothwelleeb2d212005-09-30 17:24:15 +10001066 default "0xc000000000000000"
Kumar Gala37dd2ba2008-04-22 04:22:34 +10001067config KERNEL_START
1068 hex
Kumar Gala37dd2ba2008-04-22 04:22:34 +10001069 default "0xc000000000000000"
1070config PHYSICAL_START
1071 hex
Kumar Gala37dd2ba2008-04-22 04:22:34 +10001072 default "0x00000000"
Stephen Rothwellcabb5582005-09-30 16:16:52 +10001073endif
1074
Michael Ellermana4da0d52013-10-11 14:07:57 +11001075config ARCH_RANDOM
1076 def_bool n
1077
Paul Mackerras14cf11a2005-09-26 16:04:21 +10001078source "net/Kconfig"
1079
1080source "drivers/Kconfig"
1081
1082source "fs/Kconfig"
1083
Paul Mackerras14cf11a2005-09-26 16:04:21 +10001084source "lib/Kconfig"
1085
Paul Mackerras14cf11a2005-09-26 16:04:21 +10001086source "arch/powerpc/Kconfig.debug"
1087
1088source "security/Kconfig"
1089
1090config KEYS_COMPAT
1091 bool
1092 depends on COMPAT && KEYS
1093 default y
1094
1095source "crypto/Kconfig"
Domen Puncer6f668282007-09-21 00:00:11 +10001096
Sylvain Munaut1088a202007-09-16 20:53:25 +10001097config PPC_LIB_RHEAP
1098 bool
1099
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -05001100source "arch/powerpc/kvm/Kconfig"
Michael Ellerman85baa092016-03-24 22:04:05 +11001101
1102source "kernel/livepatch/Kconfig"