blob: b77035f534917d10fdf9e8881ef7917cc8e0d54b [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
Benjamin Herrenschmidt817820b2015-06-24 15:25:31 +100085config ARCH_HAS_DMA_SET_COHERENT_MASK
86 bool
87
Paul Mackerras14cf11a2005-09-26 16:04:21 +100088config PPC
89 bool
90 default y
Mark Salterb7e7c372013-10-07 22:15:32 -040091 select ARCH_MIGHT_HAVE_PC_PARPORT
Mark Salterc74e6d32014-01-01 11:32:26 -080092 select ARCH_MIGHT_HAVE_PC_SERIO
Stephen Rothwelld812c0e12013-03-06 18:11:51 +000093 select BINFMT_ELF
Kees Cook2b68f6c2015-04-14 15:48:00 -070094 select ARCH_HAS_ELF_RANDOMIZE
Stephen Rothwell10f85f42010-06-29 12:43:34 +100095 select OF
Stephen Neuendorffere6ce1322010-11-18 15:54:56 -080096 select OF_EARLY_FLATTREE
Marek Szyprowski708b7ee2014-02-28 14:42:56 +010097 select OF_RESERVED_MEM
Steven Rostedt2b79d692009-01-06 18:49:17 +000098 select HAVE_FTRACE_MCOUNT_RECORD
99 select HAVE_DYNAMIC_FTRACE
Steven Rostedt606576c2008-10-06 19:06:12 -0400100 select HAVE_FUNCTION_TRACER
Steven Rostedt60ce8f72009-02-11 20:06:43 -0500101 select HAVE_FUNCTION_GRAPH_TRACER
Catalin Marinas7ac57a82012-10-08 16:28:16 -0700102 select SYSCTL_EXCEPTION_TRACE
Michael Buesch7444a722008-07-25 01:46:11 -0700103 select ARCH_WANT_OPTIONAL_GPIOLIB
Stephen Rothwell4febd952013-03-07 15:48:16 +1100104 select VIRT_TO_BUS if !PPC64
Sam Ravnborgec7748b2008-02-09 10:46:40 +0100105 select HAVE_IDE
Benjamin Herrenschmidta1f242f2008-07-23 21:27:08 -0700106 select HAVE_IOREMAP_PROT
Anton Blanchard0b5e6662013-09-23 12:05:12 +1000107 select HAVE_EFFICIENT_UNALIGNED_ACCESS if !CPU_LITTLE_ENDIAN
Mathieu Desnoyers3f550092008-02-02 15:10:35 -0500108 select HAVE_KPROBES
Jason Wessel17ce4522008-07-23 11:30:15 -0500109 select HAVE_ARCH_KGDB
Ananth N Mavinakayanahalli9edddaa2008-03-04 14:28:37 -0800110 select HAVE_KRETPROBES
Roland McGrathdec2b0d2008-07-27 16:53:20 +1000111 select HAVE_ARCH_TRACEHOOK
Yinghai Lu95f72d12010-07-12 14:36:09 +1000112 select HAVE_MEMBLOCK
Tejun Heo1d7cfe12011-12-08 10:22:08 -0800113 select HAVE_MEMBLOCK_NODE_MAP
FUJITA Tomonori46bab4e2009-08-04 19:08:26 +0000114 select HAVE_DMA_ATTRS
FUJITA Tomonori80d3e8a2009-08-04 19:08:28 +0000115 select HAVE_DMA_API_DEBUG
Steven Rostedt4e491d12008-05-14 23:49:44 -0400116 select HAVE_OPROFILE
Catalin Marinasb69ec422012-10-08 16:28:11 -0700117 select HAVE_DEBUG_KMEMLEAK
Laura Abbott308c09f2014-08-08 14:23:25 -0700118 select ARCH_HAS_SG_CHAIN
Paul Mackerrasc2e95c62009-06-12 21:10:41 +0000119 select GENERIC_ATOMIC64 if PPC32
Catalin Marinas74634492012-07-30 14:41:09 -0700120 select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
Ingo Molnarcdd6c482009-09-21 12:02:48 +0200121 select HAVE_PERF_EVENTS
Mahesh Salgaonkar359e4282010-04-07 18:10:20 +1000122 select HAVE_REGS_AND_STACK_ACCESS_API
K.Prasad5aae8a52010-06-15 11:35:19 +0530123 select HAVE_HW_BREAKPOINT if PERF_EVENTS && PPC_BOOK3S_64
Will Deaconc1d7e012012-07-30 14:42:46 -0700124 select ARCH_WANT_IPC_PARSE_VERSION
Grant Likelyad5b7f132012-01-30 08:02:19 +0000125 select SPARSE_IRQ
Grant Likelycc79ca62012-02-16 01:37:49 -0700126 select IRQ_DOMAIN
Thomas Gleixner433c9c62011-03-25 17:04:59 +0100127 select GENERIC_IRQ_SHOW
128 select GENERIC_IRQ_SHOW_LEVEL
Thomas Gleixnere8d2c472011-10-05 02:30:51 +0000129 select IRQ_FORCED_THREADING
Peter Zijlstra26723912011-05-24 17:12:00 -0700130 select HAVE_RCU_TABLE_FREE if SMP
Ian Munsie02424d82011-02-02 17:27:24 +0000131 select HAVE_SYSCALL_TRACEPOINTS
Denis Kirjanoveb84bab2015-02-17 10:04:43 +0300132 select HAVE_BPF_JIT
Michael Ellermanac5f89c2011-06-29 19:16:59 +0000133 select HAVE_ARCH_JUMP_LABEL
Huang Yingdf013ff2011-07-13 13:14:22 +0800134 select ARCH_HAVE_NMI_SAFE_CMPXCHG
Riku Voipio957e3fa2014-12-12 16:57:44 -0800135 select ARCH_HAS_GCOV_PROFILE_ALL
Thomas Gleixner17e32ea2012-04-20 13:05:48 +0000136 select GENERIC_SMP_IDLE_THREAD
Anna-Maria Gleixnerb9ed27d2012-05-18 16:45:51 +0000137 select GENERIC_CMOS_UPDATE
John Stultz70639422012-09-04 15:34:21 -0400138 select GENERIC_TIME_VSYSCALL_OLD
Anna-Maria Gleixnerb9ed27d2012-05-18 16:45:51 +0000139 select GENERIC_CLOCKEVENTS
Preeti U Murthy0d948732014-02-26 05:39:06 +0530140 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
141 select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
Paul Mackerras16293722012-05-28 13:03:47 +1000142 select GENERIC_STRNCPY_FROM_USER
143 select GENERIC_STRNLEN_USER
David Howells786d35d2012-09-28 14:31:03 +0930144 select HAVE_MOD_ARCH_SPECIFIC
145 select MODULES_USE_ELF_RELA
Al Viro0bcfe542012-10-26 23:08:25 -0400146 select CLONE_BACKWARDS
David Woodhousefe3955c2012-12-19 15:14:17 +0000147 select ARCH_USE_BUILTIN_BSWAP
Al Viro0980cae2012-12-25 16:23:09 -0500148 select OLD_SIGSUSPEND
Al Viro09a4d5d2012-12-25 19:27:42 -0500149 select OLD_SIGACTION if PPC32
Dave Hansend1a1dc02013-07-01 13:04:42 -0700150 select HAVE_DEBUG_STACKOVERFLOW
Frederic Weisbecker62d26c82013-09-24 17:18:36 +0200151 select HAVE_IRQ_EXIT_ON_IRQ_STACK
Michael Ellerman3405d232014-01-15 18:14:28 +1100152 select ARCH_USE_CMPXCHG_LOCKREF if PPC64
AKASHI Takahiro7a017722014-02-25 18:16:24 +0900153 select HAVE_ARCH_AUDITSYSCALL
Peter Zijlstra4badad32014-06-06 19:53:16 +0200154 select ARCH_SUPPORTS_ATOMIC_RMW
Anton Blancharda75c3802014-09-19 09:40:21 +1000155 select DCACHE_WORD_ACCESS if PPC64 && CPU_LITTLE_ENDIAN
Anton Blanchard10239732014-09-17 22:15:33 +1000156 select NO_BOOTMEM
Aneesh Kumar K.Vb30e7592014-11-05 21:57:41 +0530157 select HAVE_GENERIC_RCU_GUP
Anton Blanchardc54b2bf2015-04-09 12:52:56 +1000158 select HAVE_PERF_EVENTS_NMI if PPC64
Borislav Petkovb01aec92015-05-21 19:59:31 +0200159 select EDAC_SUPPORT
160 select EDAC_ATOMIC_SCRUB
Benjamin Herrenschmidt817820b2015-06-24 15:25:31 +1000161 select ARCH_HAS_DMA_SET_COHERENT_MASK
Michael Ellerman2449acc2015-07-23 20:21:09 +1000162 select HAVE_ARCH_SECCOMP_FILTER
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000163
Anton Blanchard7a332b02013-09-23 12:04:51 +1000164config GENERIC_CSUM
165 def_bool CPU_LITTLE_ENDIAN
166
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000167config EARLY_PRINTK
168 bool
Benjamin Herrenschmidt51d30822005-11-23 17:57:25 +1100169 default y
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000170
Jason Baronb71d47c2013-11-25 23:23:11 +0000171config PANIC_TIMEOUT
172 int
173 default 180
174
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000175config COMPAT
176 bool
177 default y if PPC64
Roland McGrath01e31db2008-01-02 17:03:11 -0800178 select COMPAT_BINFMT_ELF
Chris Metcalf48b25c42012-03-15 13:13:38 -0400179 select ARCH_WANT_OLD_COMPAT_IPC
Al Viro09a4d5d2012-12-25 19:27:42 -0500180 select COMPAT_OLD_SIGACTION
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000181
182config SYSVIPC_COMPAT
183 bool
184 depends on COMPAT && SYSVIPC
185 default y
186
187# All PPC32s use generic nvram driver through ppc_md
188config GENERIC_NVRAM
189 bool
190 default y if PPC32
191
Ingo Molnarae1e9132008-11-11 09:05:16 +0100192config SCHED_OMIT_FRAME_POINTER
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000193 bool
194 default y
195
196config ARCH_MAY_HAVE_PC_FDC
197 bool
Pranith Kumar3484a312014-08-18 17:13:41 -0400198 default PCI
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000199
Kumar Gala08264cb2006-01-10 21:43:56 -0600200config PPC_UDBG_16550
201 bool
202 default n
203
Kumar Gala08264cb2006-01-10 21:43:56 -0600204config GENERIC_TBSYNC
205 bool
206 default y if PPC32 && SMP
207 default n
208
Al Viroe65e1fc2006-09-12 03:04:40 -0400209config AUDIT_ARCH
210 bool
211 default y
212
Jeremy Fitzhardinge73c9cea2006-12-08 03:30:41 -0800213config GENERIC_BUG
214 bool
215 default y
216 depends on BUG
217
Johannes Bergb3028872007-03-20 05:18:02 +1100218config SYS_SUPPORTS_APM_EMULATION
Kumar Gala58da10b2007-05-23 09:51:46 -0500219 default y if PMAC_APM_EMU
Johannes Bergb3028872007-03-20 05:18:02 +1100220 bool
221
David Gibson6c5b59b2011-04-14 18:29:16 +0000222config EPAPR_BOOT
223 bool
224 help
225 Used to allow a board to specify it wants an ePAPR compliant wrapper.
226 default n
227
Kumar Galaf4fc4a52006-01-16 10:53:22 -0600228config DEFAULT_UIMAGE
229 bool
230 help
231 Used to allow a board to specify it wants a uImage built by default
232 default n
233
Johannes Berg801e4062007-12-08 02:12:39 +0100234config ARCH_HIBERNATION_POSSIBLE
235 bool
Johannes Berg543b9fd2007-05-03 22:31:38 +1000236 default y
237
Johannes Bergf4cb5702007-12-08 02:14:00 +0100238config ARCH_SUSPEND_POSSIBLE
239 def_bool y
Anton Vorontsov4ffd6952009-09-16 01:43:57 +0400240 depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx || \
Zhao Chenhuid0832a72012-07-20 20:42:36 +0800241 (PPC_85xx && !PPC_E500MC) || PPC_86xx || PPC_PSERIES \
242 || 44x || 40x
Johannes Bergf4cb5702007-12-08 02:14:00 +0100243
Benjamin Herrenschmidt4c75a6f2006-11-11 17:24:53 +1100244config PPC_DCR_NATIVE
245 bool
246 default n
247
248config PPC_DCR_MMIO
249 bool
250 default n
251
252config PPC_DCR
253 bool
254 depends on PPC_DCR_NATIVE || PPC_DCR_MMIO
255 default y
256
Benjamin Herrenschmidt4c9d2802006-11-11 17:25:08 +1100257config PPC_OF_PLATFORM_PCI
258 bool
Stephen Rothwell373a6da2007-12-21 15:37:07 +1100259 depends on PCI
Benjamin Herrenschmidt4c9d2802006-11-11 17:25:08 +1100260 depends on PPC64 # not supported on 32 bits yet
261 default n
262
Akinobu Mita6a11f752009-03-31 15:23:17 -0700263config ARCH_SUPPORTS_DEBUG_PAGEALLOC
Kim Phillipsce614c32015-01-26 13:22:22 -0600264 depends on PPC32 || PPC_STD_MMU_64
Akinobu Mita6a11f752009-03-31 15:23:17 -0700265 def_bool y
266
Ananth N Mavinakayanahalli8b7b80b2012-08-23 21:31:32 +0000267config ARCH_SUPPORTS_UPROBES
268 def_bool y
269
Dave Kleikamp172ae2e2010-02-08 11:50:57 +0000270config PPC_ADV_DEBUG_REGS
271 bool
272 depends on 40x || BOOKE
273 default y
274
275config PPC_ADV_DEBUG_IACS
276 int
277 depends on PPC_ADV_DEBUG_REGS
278 default 4 if 44x
279 default 2
280
281config PPC_ADV_DEBUG_DACS
282 int
283 depends on PPC_ADV_DEBUG_REGS
284 default 2
285
286config PPC_ADV_DEBUG_DVCS
287 int
288 depends on PPC_ADV_DEBUG_REGS
289 default 2 if 44x
290 default 0
291
292config PPC_ADV_DEBUG_DAC_RANGE
293 bool
294 depends on PPC_ADV_DEBUG_REGS && 44x
295 default y
296
Suzuki K. Poulose5e249d42013-01-07 00:26:57 +0000297config PPC_EMULATE_SSTEP
298 bool
299 default y if KPROBES || UPROBES || XMON || HAVE_HW_BREAKPOINT
300
Scott Wood1c980252014-08-08 18:40:42 -0500301config ZONE_DMA32
302 bool
303 default y if PPC64
304
Kirill A. Shutemov06ef42a2015-04-14 15:45:57 -0700305config PGTABLE_LEVELS
306 int
307 default 2 if !PPC64
308 default 3 if PPC_64K_PAGES
309 default 4
310
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000311source "init/Kconfig"
312
Matt Helsleydc52ddc2008-10-18 20:27:21 -0700313source "kernel/Kconfig.freezer"
314
Benjamin Herrenschmidta2d2e1e2007-12-21 15:39:24 +1100315source "arch/powerpc/sysdev/Kconfig"
Kumar Gala4330f5d2007-03-16 09:32:17 -0500316source "arch/powerpc/platforms/Kconfig"
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000317
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000318menu "Kernel options"
319
320config HIGHMEM
321 bool "High memory support"
322 depends on PPC32
323
324source kernel/Kconfig.hz
325source kernel/Kconfig.preempt
326source "fs/Kconfig.binfmt"
327
Mel Gormanba72cb82007-11-28 16:21:13 -0800328config HUGETLB_PAGE_SIZE_VARIABLE
329 bool
330 depends on HUGETLB_PAGE
331 default y
332
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000333config MATH_EMULATION
334 bool "Math emulation"
Benjamin Herrenschmidt4e63f8e2013-06-09 17:01:24 +1000335 depends on 4xx || 8xx || PPC_MPC832x || BOOKE
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000336 ---help---
337 Some PowerPC chips designed for embedded applications do not have
338 a floating-point unit and therefore do not implement the
339 floating-point instructions in the PowerPC instruction set. If you
340 say Y here, the kernel will include code to emulate a floating-point
341 unit, which will allow programs that use floating-point
342 instructions to run.
343
Benjamin Herrenschmidt4e63f8e2013-06-09 17:01:24 +1000344 This is also useful to emulate missing (optional) instructions
345 such as fsqrt on cores that do have an FPU but do not implement
346 them (such as Freescale BookE).
347
Kevin Haoe05c0e82013-07-16 19:57:15 +0800348choice
349 prompt "Math emulation options"
350 default MATH_EMULATION_FULL
351 depends on MATH_EMULATION
352
353config MATH_EMULATION_FULL
354 bool "Emulate all the floating point instructions"
355 ---help---
356 Select this option will enable the kernel to support to emulate
357 all the floating point instructions. If your SoC doesn't have
358 a FPU, you should select this.
359
360config MATH_EMULATION_HW_UNIMPLEMENTED
361 bool "Just emulate the FPU unimplemented instructions"
362 ---help---
363 Select this if you know there does have a hardware FPU on your
364 SoC, but some floating point instructions are not implemented by that.
365
366endchoice
367
Michael Neuling3d72bbc2013-02-13 16:21:43 +0000368config PPC_TRANSACTIONAL_MEM
369 bool "Transactional Memory support for POWERPC"
370 depends on PPC_BOOK3S_64
371 depends on SMP
Michael Neuling7b37a122014-01-08 21:25:31 +1100372 select ALTIVEC
373 select VSX
Michael Neuling3d72bbc2013-02-13 16:21:43 +0000374 default n
375 ---help---
376 Support user-mode Transactional Memory on POWERPC.
377
FUJITA Tomonorifb3475e2008-02-04 22:28:08 -0800378config IOMMU_HELPER
379 def_bool PPC64
380
Becky Bruceec3cf2e2009-05-14 12:42:28 +0000381config SWIOTLB
382 bool "SWIOTLB support"
383 default n
384 select IOMMU_HELPER
385 ---help---
386 Support for IO bounce buffering for systems without an IOMMU.
387 This allows us to DMA to the full physical address space on
388 platforms where the size of a physical address is larger
389 than the bus address. Not all platforms support this.
390
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000391config HOTPLUG_CPU
392 bool "Support for enabling/disabling CPUs"
Stephen Rothwell40b31362013-05-21 13:49:35 +1000393 depends on SMP && (PPC_PSERIES || \
Zhao Chenhuid0832a72012-07-20 20:42:36 +0800394 PPC_PMAC || PPC_POWERNV || (PPC_85xx && !PPC_E500MC))
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000395 ---help---
396 Say Y here to be able to disable and re-enable individual
397 CPUs at runtime on SMP machines.
398
399 Say N if you are unsure.
400
Nathan Fontenot12633e82009-11-25 17:23:25 +0000401config ARCH_CPU_PROBE_RELEASE
402 def_bool y
403 depends on HOTPLUG_CPU
404
Yasunori Gotocc576372006-06-29 02:24:27 -0700405config ARCH_ENABLE_MEMORY_HOTPLUG
406 def_bool y
407
Badari Pulavartya99824f2008-02-05 00:10:18 -0800408config ARCH_HAS_WALK_MEMORY
409 def_bool y
410
Badari Pulavarty14824712008-02-05 00:10:17 -0800411config ARCH_ENABLE_MEMORY_HOTREMOVE
412 def_bool y
413
Mahesh Salgaonkarf2296a32013-11-15 09:50:50 +0530414config PPC64_SUPPORTS_MEMORY_FAILURE
415 bool "Add support for memory hwpoison"
416 depends on PPC_BOOK3S_64
417 default "y" if PPC_POWERNV
418 select ARCH_SUPPORTS_MEMORY_FAILURE
419
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000420config KEXEC
Kees Cook642e56f2013-01-16 18:53:25 -0800421 bool "kexec system call"
422 depends on (PPC_BOOK3S || FSL_BOOKE || (44x && !SMP))
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000423 help
424 kexec is a system call that implements the ability to shutdown your
425 current kernel, and to start another kernel. It is like a reboot
Matt LaPlante1f1332f2006-06-29 01:32:47 -0400426 but it is independent of the system firmware. And like a reboot
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000427 you can start any kernel with it, not just Linux.
428
Matt LaPlante1f1332f2006-06-29 01:32:47 -0400429 The name comes from the similarity to the exec system call.
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000430
431 It is an ongoing process to be certain the hardware in a machine
432 is properly shutdown, so do not be surprised if this code does not
Geert Uytterhoevenbf220692013-08-20 21:38:03 +0200433 initially work for you. As of this writing the exact hardware
434 interface is strongly in flux, so no good recommendation can be
435 made.
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000436
Haren Mynenie8625d462006-01-14 13:48:25 -0800437config CRASH_DUMP
Bernhard Walle3420b5d2008-06-27 03:02:15 +1000438 bool "Build a kdump crash kernel"
Suzuki Poulose47da4212012-04-15 22:27:35 +0000439 depends on PPC64 || 6xx || FSL_BOOKE || (44x && !SMP)
Guenter Roeckfb43e842014-06-30 11:45:30 -0700440 select RELOCATABLE if (PPC64 && !COMPILE_TEST) || 44x || FSL_BOOKE
Haren Mynenie8625d462006-01-14 13:48:25 -0800441 help
442 Build a kernel suitable for use as a kdump capture kernel.
Mohan Kumar M54622f12008-10-21 17:38:10 +0000443 The same kernel binary can be used as production kernel and dump
444 capture kernel.
Haren Mynenie8625d462006-01-14 13:48:25 -0800445
Mahesh Salgaonkareb39c882012-02-16 01:14:22 +0000446config FA_DUMP
447 bool "Firmware-assisted dump"
Michael Ellerman90890b12013-10-28 15:00:35 +1100448 depends on PPC64 && PPC_RTAS && CRASH_DUMP && KEXEC
Manish Ahuja242f2712008-03-22 10:50:50 +1100449 help
Mahesh Salgaonkareb39c882012-02-16 01:14:22 +0000450 A robust mechanism to get reliable kernel crash dump with
451 assistance from firmware. This approach does not use kexec,
452 instead firmware assists in booting the kdump kernel
453 while preserving memory contents. Firmware-assisted dump
454 is meant to be a kdump replacement offering robustness and
455 speed not possible without system firmware assistance.
Manish Ahuja242f2712008-03-22 10:50:50 +1100456
457 If unsure, say "N"
458
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000459config IRQ_ALL_CPUS
460 bool "Distribute interrupts on all CPUs by default"
Paul Bolle6cf09b92013-05-15 11:21:01 +0200461 depends on SMP
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000462 help
463 This option gives the kernel permission to distribute IRQs across
464 multiple CPUs. Saying N here will route all IRQs to the first
465 CPU. Generally saying Y is safe, although some problems have been
466 reported with SMP Power Macintoshes with this option enabled.
467
Andy Whitcroftffa27b62005-10-28 17:46:58 -0700468config NUMA
469 bool "NUMA support"
470 depends on PPC64
471 default y if SMP && PPC_PSERIES
472
Yasunori Gotoc80d79d2006-04-10 22:53:53 -0700473config NODES_SHIFT
474 int
Anton Blanchardea55bf22009-09-21 19:56:43 +0000475 default "8" if PPC64
Yasunori Gotoc80d79d2006-04-10 22:53:53 -0700476 default "4"
477 depends on NEED_MULTIPLE_NODES
478
Nishanth Aravamudan8c272262014-05-19 11:14:23 -0700479config USE_PERCPU_NUMA_NODE_ID
480 def_bool y
481 depends on NUMA
482
Nishanth Aravamudan64bb80d2014-05-16 16:41:20 -0700483config HAVE_MEMORYLESS_NODES
484 def_bool y
485 depends on NUMA
486
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000487config ARCH_SELECT_MEMORY_MODEL
488 def_bool y
489 depends on PPC64
490
491config ARCH_FLATMEM_ENABLE
Andy Whitcroft9100b202005-11-29 19:20:55 +0000492 def_bool y
493 depends on (PPC64 && !NUMA) || PPC32
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000494
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000495config ARCH_SPARSEMEM_ENABLE
496 def_bool y
Andy Whitcroft9100b202005-11-29 19:20:55 +0000497 depends on PPC64
Andy Whitcroftd29eff72007-10-16 01:24:17 -0700498 select SPARSEMEM_VMEMMAP_ENABLE
Anton Blanchard45fb6ce2005-11-11 14:22:35 +1100499
500config ARCH_SPARSEMEM_DEFAULT
501 def_bool y
Benjamin Herrenschmidt78bde532007-02-13 11:46:06 +1100502 depends on (SMP && PPC_PSERIES) || PPC_PS3
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000503
Benjamin Herrenschmidt5a1eb5c2009-10-30 15:03:54 +1100504config SYS_SUPPORTS_HUGETLBFS
Becky Bruce41151e72011-06-28 09:54:48 +0000505 bool
Benjamin Herrenschmidt5a1eb5c2009-10-30 15:03:54 +1100506
Mel Gormanc67c3cb2006-09-27 01:49:49 -0700507source "mm/Kconfig"
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000508
Mike Kravetz7e9191d2005-11-07 09:39:48 -0800509config ARCH_MEMORY_PROBE
510 def_bool y
511 depends on MEMORY_HOTPLUG
512
Andy Whitcroft75167952006-10-21 10:24:14 -0700513# Some NUMA nodes have memory ranges that span
514# other nodes. Even though a pfn is valid and
515# between a node's start and end pfns, it may not
516# reside on that node. See memmap_init_zone()
517# for details.
518config NODES_SPAN_OTHER_NODES
519 def_bool y
520 depends on NEED_MULTIPLE_NODES
521
Benjamin Herrenschmidt16c2d472007-05-08 16:27:28 +1000522config PPC_HAS_HASH_64K
523 bool
524 depends on PPC64
525 default n
526
Yuri Tikhonove1240122009-01-29 01:40:44 +0000527config STDBINUTILS
528 bool "Using standard binutils settings"
529 depends on 44x
530 default y
531 help
532 Turning this option off allows you to select 256KB PAGE_SIZE on 44x.
533 Note, that kernel will be able to run only those applications,
534 which had been compiled using binutils later than 2.17.50.0.3 with
535 '-zmax-page-size' set to 256K (the default is 64K). Or, if using
536 the older binutils, you can patch them with a trivial patch, which
537 changes the ELF_MAXPAGESIZE definition from 0x10000 to 0x40000.
538
Ilya Yanokca9153a2008-12-11 04:55:41 +0300539choice
540 prompt "Page size"
541 default PPC_4K_PAGES
Benjamin Herrenschmidt3c726f82005-11-07 11:06:55 +1100542 help
Ilya Yanokca9153a2008-12-11 04:55:41 +0300543 Select the kernel logical page size. Increasing the page size
544 will reduce software overhead at each page boundary, allow
545 hardware prefetch mechanisms to be more effective, and allow
546 larger dma transfers increasing IO efficiency and reducing
547 overhead. However the utilization of memory will increase.
548 For example, each cached file will using a multiple of the
549 page size to hold its contents and the difference between the
550 end of file and the end of page is wasted.
551
552 Some dedicated systems, such as software raid serving with
553 accelerated calculations, have shown significant increases.
554
555 If you configure a 64 bit kernel for 64k pages but the
556 processor does not support them, then the kernel will simulate
557 them with 4k pages, loading them on demand, but with the
558 reduced software overhead and larger internal fragmentation.
559 For the 32 bit kernel, a large page option will not be offered
560 unless it is supported by the configured processor.
561
562 If unsure, choose 4K_PAGES.
563
564config PPC_4K_PAGES
565 bool "4k page size"
566
567config PPC_16K_PAGES
Michael Ellerman55f8b5b2015-08-07 16:19:46 +1000568 bool "16k page size"
569 depends on 44x || PPC_8xx
Ilya Yanokca9153a2008-12-11 04:55:41 +0300570
571config PPC_64K_PAGES
Michael Ellerman55f8b5b2015-08-07 16:19:46 +1000572 bool "64k page size"
573 depends on !PPC_FSL_BOOK3E && (44x || PPC_STD_MMU_64 || PPC_BOOK3E_64)
Ilya Yanokca9153a2008-12-11 04:55:41 +0300574 select PPC_HAS_HASH_64K if PPC_STD_MMU_64
575
Yuri Tikhonove1240122009-01-29 01:40:44 +0000576config PPC_256K_PAGES
Michael Ellerman55f8b5b2015-08-07 16:19:46 +1000577 bool "256k page size"
578 depends on 44x && !STDBINUTILS
Yuri Tikhonove1240122009-01-29 01:40:44 +0000579 help
580 Make the page size 256k.
581
582 As the ELF standard only requires alignment to support page
583 sizes up to 64k, you will need to compile all of your user
584 space applications with a non-standard binutils settings
585 (see the STDBINUTILS description for details).
586
587 Say N unless you know what you are doing.
588
Ilya Yanokca9153a2008-12-11 04:55:41 +0300589endchoice
Benjamin Herrenschmidt3c726f82005-11-07 11:06:55 +1100590
Stephen Rothwell53bcddb2008-04-11 11:11:56 +1000591config FORCE_MAX_ZONEORDER
592 int "Maximum zone order"
Benjamin Herrenschmidt066c4b82009-07-21 15:25:53 +0000593 range 9 64 if PPC64 && PPC_64K_PAGES
594 default "9" if PPC64 && PPC_64K_PAGES
595 range 13 64 if PPC64 && !PPC_64K_PAGES
596 default "13" if PPC64 && !PPC_64K_PAGES
597 range 9 64 if PPC32 && PPC_16K_PAGES
598 default "9" if PPC32 && PPC_16K_PAGES
599 range 7 64 if PPC32 && PPC_64K_PAGES
600 default "7" if PPC32 && PPC_64K_PAGES
601 range 5 64 if PPC32 && PPC_256K_PAGES
602 default "5" if PPC32 && PPC_256K_PAGES
Johannes Bergebe40c52008-09-24 04:29:08 +0000603 range 11 64
Stephen Rothwell53bcddb2008-04-11 11:11:56 +1000604 default "11"
605 help
606 The kernel memory allocator divides physically contiguous memory
607 blocks into "zones", where each zone is a power of two number of
608 pages. This option selects the largest power of two that the kernel
609 keeps in the memory allocator. If you need to allocate very large
610 blocks of physically contiguous memory, then you may need to
611 increase this value.
612
613 This config option is actually maximum order plus one. For example,
614 a value of 11 means that the largest free memory block is 2^10 pages.
615
616 The page size is not necessarily 4KB. For example, on 64-bit
617 systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES. Keep
618 this in mind when choosing a value for this option.
619
Paul Mackerrasfa282372008-01-24 08:35:13 +1100620config PPC_SUBPAGE_PROT
621 bool "Support setting protections for 4k subpages"
Ilya Yanokca9153a2008-12-11 04:55:41 +0300622 depends on PPC_STD_MMU_64 && PPC_64K_PAGES
Paul Mackerrasfa282372008-01-24 08:35:13 +1100623 help
624 This option adds support for a system call to allow user programs
625 to set access permissions (read/write, readonly, or no access)
626 on the 4k subpages of each 64k page.
627
Ian Munsiee83d0162014-10-08 19:54:50 +1100628config PPC_COPRO_BASE
629 bool
630 default n
631
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000632config SCHED_SMT
633 bool "SMT (Hyperthreading) scheduler support"
634 depends on PPC64 && SMP
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000635 help
636 SMT scheduler support improves the CPU scheduler's decision making
637 when dealing with POWER5 cpus at a cost of slightly increased
638 overhead in some places. If unsure say N here.
639
Michael Neulingb92a66a2012-09-10 00:35:26 +0000640config PPC_DENORMALISATION
641 bool "PowerPC denormalisation exception handling"
642 depends on PPC_BOOK3S_64
Anton Blanchard4e90a2a2013-07-31 16:31:26 +1000643 default "y" if PPC_POWERNV
Michael Neulingb92a66a2012-09-10 00:35:26 +0000644 ---help---
645 Add support for handling denormalisation of single precision
646 values. Useful for bare metal only. If unsure say Y here.
647
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000648config CMDLINE_BOOL
649 bool "Default bootloader kernel arguments"
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000650
651config CMDLINE
652 string "Initial kernel command string"
653 depends on CMDLINE_BOOL
654 default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
655 help
656 On some platforms, there is currently no way for the boot loader to
657 pass arguments to the kernel. For these platforms, you can supply
658 some command-line options at build time by entering them here. In
659 most cases you will need to specify the root device here.
660
Sebastian Siewioreb3b80f2014-02-20 21:48:17 +0100661config CMDLINE_FORCE
662 bool "Always use the default kernel command string"
663 depends on CMDLINE_BOOL
664 help
665 Always use the default kernel command string, even if the boot
666 loader passes other arguments to the kernel.
667 This is useful if you cannot or don't want to change the
668 command-line options your boot loader passes to the kernel.
669
Grant Likelyc356aa42008-07-09 09:41:52 -0600670config EXTRA_TARGETS
671 string "Additional default image types"
672 help
673 List additional targets to be built by the bootwrapper here (separated
674 by spaces). This is useful for targets that depend of device tree
675 files in the .dts directory.
676
677 Targets in this list will be build as part of the default build
678 target, or when the user does a 'make zImage' or a
679 'make zImage.initrd'.
680
681 If unsure, leave blank
682
Johannes Bergb28f5082008-01-15 23:17:00 -0500683config ARCH_WANTS_FREEZER_CONTROL
684 def_bool y
685 depends on ADB_PMU
686
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000687source kernel/power/Kconfig
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000688
689config SECCOMP
690 bool "Enable seccomp to safely compute untrusted bytecode"
691 depends on PROC_FS
692 default y
693 help
694 This kernel feature is useful for number crunching applications
695 that may need to compute untrusted bytecode during their
696 execution. By using pipes or other transports made available to
697 the process as file descriptors supporting the read/write
698 syscalls, it's possible to isolate those applications in
699 their own address space using seccomp. Once seccomp is
700 enabled via /proc/<pid>/seccomp, it cannot be disabled
701 and the task is only allowed to execute a few safe syscalls
702 defined by each seccomp mode.
703
704 If unsure, say Y. Only embedded should say N here.
705
706endmenu
707
708config ISA_DMA_API
709 bool
Stephen Rothwell3d066d72012-02-22 14:10:12 +0000710 default PCI
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000711
712menu "Bus options"
713
714config ISA
715 bool "Support for ISA-bus hardware"
Paul Bolle933ee712013-03-27 00:47:03 +0000716 depends on PPC_CHRP
Paul Mackerrasf9bd1702005-10-26 16:47:42 +1000717 select PPC_I8259
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000718 help
719 Find out whether you have ISA slots on your motherboard. ISA is the
720 name of a bus system, i.e. the way the CPU talks to the other stuff
721 inside your box. If you have an Apple machine, say N here; if you
Paul Bolle933ee712013-03-27 00:47:03 +0000722 have an IBM RS/6000 or pSeries machine, say Y. If you have an
723 embedded board, consult your board documentation.
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000724
Christoph Lameter5ac6da62007-02-10 01:43:14 -0800725config ZONE_DMA
726 bool
727 default y
728
FUJITA Tomonoriaf407c62010-03-10 15:23:27 -0800729config NEED_DMA_MAP_STATE
730 def_bool (PPC64 || NOT_COHERENT_CACHE)
731
FUJITA Tomonorie32205e2010-05-26 14:44:33 -0700732config NEED_SG_DMA_LENGTH
733 def_bool y
734
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000735config GENERIC_ISA_DMA
736 bool
Anton Vorontsov19274452010-07-15 07:38:16 +0000737 depends on ISA_DMA_API
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000738 default y
739
Paul Mackerras25635c72005-10-26 16:36:55 +1000740config PPC_INDIRECT_PCI
741 bool
742 depends on PCI
Becky Bruce63dafe52006-01-14 16:57:39 -0600743 default y if 40x || 44x
Paul Mackerras25635c72005-10-26 16:36:55 +1000744 default n
745
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000746config EISA
747 bool
748
749config SBUS
750 bool
751
Kumar Gala08264cb2006-01-10 21:43:56 -0600752config FSL_SOC
753 bool
754
Roy Zang55c44992007-07-10 18:44:34 +0800755config FSL_PCI
756 bool
757 select PPC_INDIRECT_PCI
Kumar Galad0839112009-01-28 13:25:29 -0600758 select PCI_QUIRKS
Roy Zang55c44992007-07-10 18:44:34 +0800759
Anton Vorontsov4ffd6952009-09-16 01:43:57 +0400760config FSL_PMC
761 bool
762 default y
763 depends on SUSPEND && (PPC_85xx || PPC_86xx)
764 help
765 Freescale MPC85xx/MPC86xx power management controller support
766 (suspend/resume). For MPC83xx see platforms/83xx/suspend.c
767
Victor Gallardod164f6d2010-10-08 10:25:27 +0000768config PPC4xx_CPM
769 bool
770 default y
771 depends on SUSPEND && (44x || 40x)
772 help
773 PPC4xx Clock Power Management (CPM) support (suspend/resume).
774 It also enables support for two different idle states (idle-wait
775 and idle-doze).
776
Stefan Roese2a706912008-03-26 22:39:50 +1100777config 4xx_SOC
778 bool
779
Anton Vorontsovacaa7aa2008-04-11 21:03:40 +0400780config FSL_LBC
Roy Zang3ab8f2a2010-10-18 15:22:31 +0800781 bool "Freescale Local Bus support"
782 depends on FSL_SOC
Anton Vorontsovacaa7aa2008-04-11 21:03:40 +0400783 help
Roy Zang3ab8f2a2010-10-18 15:22:31 +0800784 Enables reporting of errors from the Freescale local bus
785 controller. Also contains some common code used by
786 drivers for specific local bus peripherals.
Anton Vorontsovacaa7aa2008-04-11 21:03:40 +0400787
Anton Vorontsov83ff9dc2008-05-23 20:38:54 +0400788config FSL_GTM
789 bool
790 depends on PPC_83xx || QUICC_ENGINE || CPM2
791 help
792 Freescale General-purpose Timers support
793
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000794# Yes MCA RS/6000s exist but Linux-PPC does not currently support any
795config MCA
796 bool
797
John Rigbyb5005632008-06-26 11:07:56 -0600798# Platforms that what PCI turned unconditionally just do select PCI
799# in their config node. Platforms that want to choose at config
800# time should select PPC_PCI_CHOICE
801config PPC_PCI_CHOICE
802 bool
803
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000804config PCI
John Rigbyb5005632008-06-26 11:07:56 -0600805 bool "PCI support" if PPC_PCI_CHOICE
806 default y if !40x && !CPM2 && !8xx && !PPC_83xx \
Albert Herranzbcc48592009-12-12 06:31:39 +0000807 && !PPC_85xx && !PPC_86xx && !GAMECUBE_COMMON
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000808 default PCI_QSPAN if !4xx && !CPM2 && 8xx
Michael S. Tsirkin335b8cf2011-11-24 21:06:41 +0200809 select GENERIC_PCI_IOMAP
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000810 help
811 Find out whether your system includes a PCI bus. PCI is the name of
812 a bus system, i.e. the way the CPU talks to the other stuff inside
813 your box. If you say Y here, the kernel will include drivers and
814 infrastructure code to support PCI bus devices.
815
816config PCI_DOMAINS
Matthew Wilcox36e23592007-07-10 10:54:40 -0600817 def_bool PCI
818
819config PCI_SYSCALL
820 def_bool PCI
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000821
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000822config PCI_QSPAN
823 bool "QSpan PCI"
824 depends on !4xx && !CPM2 && 8xx
Paul Mackerrasf9bd1702005-10-26 16:47:42 +1000825 select PPC_I8259
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000826 help
827 Say Y here if you have a system based on a Motorola 8xx-series
828 embedded processor with a QSPAN PCI interface, otherwise say N.
829
830config PCI_8260
831 bool
832 depends on PCI && 8260
Paul Mackerras25635c72005-10-26 16:36:55 +1000833 select PPC_INDIRECT_PCI
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000834 default y
835
Jake Moilanenbb53bb32006-06-07 16:05:46 -0500836source "drivers/pci/pcie/Kconfig"
837
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000838source "drivers/pci/Kconfig"
839
840source "drivers/pcmcia/Kconfig"
841
842source "drivers/pci/hotplug/Kconfig"
843
Zhang Weif1f389d2008-04-18 13:33:39 -0700844config HAS_RAPIDIO
845 bool
846 default n
847
848config RAPIDIO
Alexandre Bounine56abde72014-01-23 15:56:04 -0800849 tristate "RapidIO support"
Alexandre Bounine388b78a2011-03-23 16:43:03 -0700850 depends on HAS_RAPIDIO || PCI
Zhang Weif1f389d2008-04-18 13:33:39 -0700851 help
852 If you say Y here, the kernel will include drivers and
853 infrastructure code to support RapidIO interconnect devices.
854
Alexandre Bounine388b78a2011-03-23 16:43:03 -0700855config FSL_RIO
856 bool "Freescale Embedded SRIO Controller support"
Alexandre Bounine56abde72014-01-23 15:56:04 -0800857 depends on RAPIDIO = y && HAS_RAPIDIO
Alexandre Bounine388b78a2011-03-23 16:43:03 -0700858 default "n"
859 ---help---
860 Include support for RapidIO controller on Freescale embedded
861 processors (MPC8548, MPC8641, etc).
862
Zhang Weif1f389d2008-04-18 13:33:39 -0700863source "drivers/rapidio/Kconfig"
864
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000865endmenu
866
Suzuki Poulose0f890c82011-12-14 22:57:15 +0000867config NONSTATIC_KERNEL
868 bool
869 default n
870
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000871menu "Advanced setup"
872 depends on PPC32
873
874config ADVANCED_OPTIONS
875 bool "Prompt for advanced kernel configuration options"
876 help
877 This option will enable prompting for a variety of advanced kernel
878 configuration options. These options can cause the kernel to not
879 work if they are set incorrectly, but can be used to optimize certain
880 aspects of kernel memory management.
881
882 Unless you know what you are doing, say N here.
883
884comment "Default settings for advanced configuration options are used"
885 depends on !ADVANCED_OPTIONS
886
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000887config LOWMEM_SIZE_BOOL
888 bool "Set maximum low memory"
889 depends on ADVANCED_OPTIONS
890 help
891 This option allows you to set the maximum amount of memory which
892 will be used as "low memory", that is, memory which the kernel can
893 access directly, without having to set up a kernel virtual mapping.
894 This can be useful in optimizing the layout of kernel virtual
895 memory.
896
897 Say N here unless you know what you are doing.
898
899config LOWMEM_SIZE
900 hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
901 default "0x30000000"
902
Trent Piepho96051462008-12-08 19:34:58 -0800903config LOWMEM_CAM_NUM_BOOL
904 bool "Set number of CAMs to use to map low memory"
905 depends on ADVANCED_OPTIONS && FSL_BOOKE
906 help
907 This option allows you to set the maximum number of CAM slots that
908 will be used to map low memory. There are a limited number of slots
909 available and even more limited number that will fit in the L1 MMU.
910 However, using more entries will allow mapping more low memory. This
911 can be useful in optimizing the layout of kernel virtual memory.
912
913 Say N here unless you know what you are doing.
914
915config LOWMEM_CAM_NUM
Josh Boyer9b71dbd2009-03-31 08:05:50 -0400916 depends on FSL_BOOKE
Trent Piepho96051462008-12-08 19:34:58 -0800917 int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL
918 default 3
919
Suzuki Poulose0f890c82011-12-14 22:57:15 +0000920config DYNAMIC_MEMSTART
Kees Cook642e56f2013-01-16 18:53:25 -0800921 bool "Enable page aligned dynamic load address for kernel"
922 depends on ADVANCED_OPTIONS && FLATMEM && (FSL_BOOKE || 44x)
Suzuki Poulose0f890c82011-12-14 22:57:15 +0000923 select NONSTATIC_KERNEL
Kumar Gala37dd2ba2008-04-22 04:22:34 +1000924 help
Suzuki Poulose0f890c82011-12-14 22:57:15 +0000925 This option enables the kernel to be loaded at any page aligned
926 physical address. The kernel creates a mapping from KERNELBASE to
927 the address where the kernel is loaded. The page size here implies
928 the TLB page size of the mapping for kernel on the particular platform.
929 Please refer to the init code for finding the TLB page size.
Kumar Gala37dd2ba2008-04-22 04:22:34 +1000930
Suzuki Poulose0f890c82011-12-14 22:57:15 +0000931 DYNAMIC_MEMSTART is an easy way of implementing pseudo-RELOCATABLE
932 kernel image, where the only restriction is the page aligned kernel
933 load address. When this option is enabled, the compile time physical
934 address CONFIG_PHYSICAL_START is ignored.
Kumar Gala37dd2ba2008-04-22 04:22:34 +1000935
Suzuki Poulose9c5f7d32011-12-14 22:58:12 +0000936 This option is overridden by CONFIG_RELOCATABLE
937
Kumar Gala37dd2ba2008-04-22 04:22:34 +1000938config RELOCATABLE
Kees Cook642e56f2013-01-16 18:53:25 -0800939 bool "Build a relocatable kernel"
Kevin Haodd189692013-12-24 15:12:06 +0800940 depends on ADVANCED_OPTIONS && FLATMEM && (44x || FSL_BOOKE)
Suzuki Poulose9c5f7d32011-12-14 22:58:12 +0000941 select NONSTATIC_KERNEL
Kumar Gala37dd2ba2008-04-22 04:22:34 +1000942 help
943 This builds a kernel image that is capable of running at the
Suzuki Poulose9c5f7d32011-12-14 22:58:12 +0000944 location the kernel is loaded at, without any alignment restrictions.
945 This feature is a superset of DYNAMIC_MEMSTART and hence overrides it.
Kumar Gala37dd2ba2008-04-22 04:22:34 +1000946
947 One use is for the kexec on panic case where the recovery kernel
948 must live at a different physical address than the primary
949 kernel.
950
951 Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address
952 it has been loaded at and the compile time physical addresses
953 CONFIG_PHYSICAL_START is ignored. However CONFIG_PHYSICAL_START
954 setting can still be useful to bootwrappers that need to know the
Suzuki Poulose9c5f7d32011-12-14 22:58:12 +0000955 load address of the kernel (eg. u-boot/mkimage).
956
957config RELOCATABLE_PPC32
958 def_bool y
959 depends on PPC32 && RELOCATABLE
Kumar Gala37dd2ba2008-04-22 04:22:34 +1000960
961config PAGE_OFFSET_BOOL
962 bool "Set custom page offset address"
963 depends on ADVANCED_OPTIONS
964 help
965 This option allows you to set the kernel virtual address at which
966 the kernel will map low memory. This can be useful in optimizing
967 the virtual memory layout of the system.
968
969 Say N here unless you know what you are doing.
970
971config PAGE_OFFSET
972 hex "Virtual address of memory base" if PAGE_OFFSET_BOOL
973 default "0xc0000000"
974
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000975config KERNEL_START_BOOL
976 bool "Set custom kernel base address"
977 depends on ADVANCED_OPTIONS
978 help
979 This option allows you to set the kernel virtual address at which
Kumar Gala37dd2ba2008-04-22 04:22:34 +1000980 the kernel will be loaded. Normally this should match PAGE_OFFSET
981 however there are times (like kdump) that one might not want them
982 to be the same.
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000983
984 Say N here unless you know what you are doing.
985
986config KERNEL_START
987 hex "Virtual address of kernel base" if KERNEL_START_BOOL
Kumar Gala37dd2ba2008-04-22 04:22:34 +1000988 default PAGE_OFFSET if PAGE_OFFSET_BOOL
Suzuki Poulose0f890c82011-12-14 22:57:15 +0000989 default "0xc2000000" if CRASH_DUMP && !NONSTATIC_KERNEL
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000990 default "0xc0000000"
991
Kumar Gala37dd2ba2008-04-22 04:22:34 +1000992config PHYSICAL_START_BOOL
993 bool "Set physical address where the kernel is loaded"
994 depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE
995 help
996 This gives the physical address where the kernel is loaded.
997
998 Say N here unless you know what you are doing.
999
1000config PHYSICAL_START
1001 hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL
Suzuki Poulose0f890c82011-12-14 22:57:15 +00001002 default "0x02000000" if PPC_STD_MMU && CRASH_DUMP && !NONSTATIC_KERNEL
Kumar Gala37dd2ba2008-04-22 04:22:34 +10001003 default "0x00000000"
1004
1005config PHYSICAL_ALIGN
1006 hex
Trent Piephoc8f35702008-12-08 19:34:59 -08001007 default "0x04000000" if FSL_BOOKE
Kumar Gala37dd2ba2008-04-22 04:22:34 +10001008 help
1009 This value puts the alignment restrictions on physical address
1010 where kernel is loaded and run from. Kernel is compiled for an
1011 address which meets above alignment restriction.
1012
Paul Mackerras14cf11a2005-09-26 16:04:21 +10001013config TASK_SIZE_BOOL
1014 bool "Set custom user task size"
1015 depends on ADVANCED_OPTIONS
1016 help
1017 This option allows you to set the amount of virtual address space
1018 allocated to user tasks. This can be useful in optimizing the
1019 virtual memory layout of the system.
1020
1021 Say N here unless you know what you are doing.
1022
1023config TASK_SIZE
1024 hex "Size of user task space" if TASK_SIZE_BOOL
Paul Bolle933ee712013-03-27 00:47:03 +00001025 default "0x80000000" if PPC_8xx
Kumar Gala4d9e55102007-10-11 13:40:21 -05001026 default "0xc0000000"
Paul Mackerras14cf11a2005-09-26 16:04:21 +10001027
Benjamin Herrenschmidt84532a02009-05-27 13:33:14 +10001028config CONSISTENT_SIZE_BOOL
1029 bool "Set custom consistent memory pool size"
1030 depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
1031 help
1032 This option allows you to set the size of the
1033 consistent memory pool. This pool of virtual memory
1034 is used to make consistent memory allocations.
1035
1036config CONSISTENT_SIZE
1037 hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
1038 default "0x00200000" if NOT_COHERENT_CACHE
1039
Paul Mackerras14cf11a2005-09-26 16:04:21 +10001040config PIN_TLB
1041 bool "Pinned Kernel TLBs (860 ONLY)"
1042 depends on ADVANCED_OPTIONS && 8xx
1043endmenu
1044
Stephen Rothwellcabb5582005-09-30 16:16:52 +10001045if PPC64
Paul Mackerras549e8152008-08-30 11:43:47 +10001046config RELOCATABLE
1047 bool "Build a relocatable kernel"
Guenter Roeckfb43e842014-06-30 11:45:30 -07001048 depends on !COMPILE_TEST
Suzuki Poulose0f890c82011-12-14 22:57:15 +00001049 select NONSTATIC_KERNEL
Paul Mackerras549e8152008-08-30 11:43:47 +10001050 help
1051 This builds a kernel image that is capable of running anywhere
1052 in the RMA (real memory area) at any 16k-aligned base address.
1053 The kernel is linked as a position-independent executable (PIE)
1054 and contains dynamic relocations which are processed early
1055 in the bootup process.
1056
1057 One use is for the kexec on panic case where the recovery kernel
1058 must live at a different physical address than the primary
1059 kernel.
1060
Paul Mackerrasbdbc29c2013-08-27 16:07:49 +10001061# This value must have zeroes in the bottom 60 bits otherwise lots will break
Kumar Gala37dd2ba2008-04-22 04:22:34 +10001062config PAGE_OFFSET
Stephen Rothwellcabb5582005-09-30 16:16:52 +10001063 hex
Stephen Rothwelleeb2d212005-09-30 17:24:15 +10001064 default "0xc000000000000000"
Kumar Gala37dd2ba2008-04-22 04:22:34 +10001065config KERNEL_START
1066 hex
Kumar Gala37dd2ba2008-04-22 04:22:34 +10001067 default "0xc000000000000000"
1068config PHYSICAL_START
1069 hex
Kumar Gala37dd2ba2008-04-22 04:22:34 +10001070 default "0x00000000"
Stephen Rothwellcabb5582005-09-30 16:16:52 +10001071endif
1072
Michael Ellermana4da0d52013-10-11 14:07:57 +11001073config ARCH_RANDOM
1074 def_bool n
1075
Paul Mackerras14cf11a2005-09-26 16:04:21 +10001076source "net/Kconfig"
1077
1078source "drivers/Kconfig"
1079
1080source "fs/Kconfig"
1081
Li Yang98658532006-10-03 23:10:46 -05001082source "arch/powerpc/sysdev/qe_lib/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"