blob: fe2f2c595fd9fd8429f3cbac5278d543e13e8810 [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
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000162
Anton Blanchard7a332b02013-09-23 12:04:51 +1000163config GENERIC_CSUM
164 def_bool CPU_LITTLE_ENDIAN
165
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000166config EARLY_PRINTK
167 bool
Benjamin Herrenschmidt51d30822005-11-23 17:57:25 +1100168 default y
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000169
Jason Baronb71d47c2013-11-25 23:23:11 +0000170config PANIC_TIMEOUT
171 int
172 default 180
173
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000174config COMPAT
175 bool
176 default y if PPC64
Roland McGrath01e31db2008-01-02 17:03:11 -0800177 select COMPAT_BINFMT_ELF
Chris Metcalf48b25c42012-03-15 13:13:38 -0400178 select ARCH_WANT_OLD_COMPAT_IPC
Al Viro09a4d5d2012-12-25 19:27:42 -0500179 select COMPAT_OLD_SIGACTION
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000180
181config SYSVIPC_COMPAT
182 bool
183 depends on COMPAT && SYSVIPC
184 default y
185
186# All PPC32s use generic nvram driver through ppc_md
187config GENERIC_NVRAM
188 bool
189 default y if PPC32
190
Ingo Molnarae1e9132008-11-11 09:05:16 +0100191config SCHED_OMIT_FRAME_POINTER
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000192 bool
193 default y
194
195config ARCH_MAY_HAVE_PC_FDC
196 bool
Pranith Kumar3484a312014-08-18 17:13:41 -0400197 default PCI
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000198
Kumar Gala08264cb2006-01-10 21:43:56 -0600199config PPC_UDBG_16550
200 bool
201 default n
202
Kumar Gala08264cb2006-01-10 21:43:56 -0600203config GENERIC_TBSYNC
204 bool
205 default y if PPC32 && SMP
206 default n
207
Al Viroe65e1fc2006-09-12 03:04:40 -0400208config AUDIT_ARCH
209 bool
210 default y
211
Jeremy Fitzhardinge73c9cea2006-12-08 03:30:41 -0800212config GENERIC_BUG
213 bool
214 default y
215 depends on BUG
216
Johannes Bergb3028872007-03-20 05:18:02 +1100217config SYS_SUPPORTS_APM_EMULATION
Kumar Gala58da10b2007-05-23 09:51:46 -0500218 default y if PMAC_APM_EMU
Johannes Bergb3028872007-03-20 05:18:02 +1100219 bool
220
David Gibson6c5b59b2011-04-14 18:29:16 +0000221config EPAPR_BOOT
222 bool
223 help
224 Used to allow a board to specify it wants an ePAPR compliant wrapper.
225 default n
226
Kumar Galaf4fc4a52006-01-16 10:53:22 -0600227config DEFAULT_UIMAGE
228 bool
229 help
230 Used to allow a board to specify it wants a uImage built by default
231 default n
232
Johannes Berg801e4062007-12-08 02:12:39 +0100233config ARCH_HIBERNATION_POSSIBLE
234 bool
Johannes Berg543b9fd2007-05-03 22:31:38 +1000235 default y
236
Johannes Bergf4cb5702007-12-08 02:14:00 +0100237config ARCH_SUSPEND_POSSIBLE
238 def_bool y
Anton Vorontsov4ffd6952009-09-16 01:43:57 +0400239 depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx || \
Zhao Chenhuid0832a72012-07-20 20:42:36 +0800240 (PPC_85xx && !PPC_E500MC) || PPC_86xx || PPC_PSERIES \
241 || 44x || 40x
Johannes Bergf4cb5702007-12-08 02:14:00 +0100242
Benjamin Herrenschmidt4c75a6f2006-11-11 17:24:53 +1100243config PPC_DCR_NATIVE
244 bool
245 default n
246
247config PPC_DCR_MMIO
248 bool
249 default n
250
251config PPC_DCR
252 bool
253 depends on PPC_DCR_NATIVE || PPC_DCR_MMIO
254 default y
255
Benjamin Herrenschmidt4c9d2802006-11-11 17:25:08 +1100256config PPC_OF_PLATFORM_PCI
257 bool
Stephen Rothwell373a6da2007-12-21 15:37:07 +1100258 depends on PCI
Benjamin Herrenschmidt4c9d2802006-11-11 17:25:08 +1100259 depends on PPC64 # not supported on 32 bits yet
260 default n
261
Akinobu Mita6a11f752009-03-31 15:23:17 -0700262config ARCH_SUPPORTS_DEBUG_PAGEALLOC
Kim Phillipsce614c32015-01-26 13:22:22 -0600263 depends on PPC32 || PPC_STD_MMU_64
Akinobu Mita6a11f752009-03-31 15:23:17 -0700264 def_bool y
265
Ananth N Mavinakayanahalli8b7b80b2012-08-23 21:31:32 +0000266config ARCH_SUPPORTS_UPROBES
267 def_bool y
268
Dave Kleikamp172ae2e2010-02-08 11:50:57 +0000269config PPC_ADV_DEBUG_REGS
270 bool
271 depends on 40x || BOOKE
272 default y
273
274config PPC_ADV_DEBUG_IACS
275 int
276 depends on PPC_ADV_DEBUG_REGS
277 default 4 if 44x
278 default 2
279
280config PPC_ADV_DEBUG_DACS
281 int
282 depends on PPC_ADV_DEBUG_REGS
283 default 2
284
285config PPC_ADV_DEBUG_DVCS
286 int
287 depends on PPC_ADV_DEBUG_REGS
288 default 2 if 44x
289 default 0
290
291config PPC_ADV_DEBUG_DAC_RANGE
292 bool
293 depends on PPC_ADV_DEBUG_REGS && 44x
294 default y
295
Suzuki K. Poulose5e249d42013-01-07 00:26:57 +0000296config PPC_EMULATE_SSTEP
297 bool
298 default y if KPROBES || UPROBES || XMON || HAVE_HW_BREAKPOINT
299
Scott Wood1c980252014-08-08 18:40:42 -0500300config ZONE_DMA32
301 bool
302 default y if PPC64
303
Kirill A. Shutemov06ef42a2015-04-14 15:45:57 -0700304config PGTABLE_LEVELS
305 int
306 default 2 if !PPC64
307 default 3 if PPC_64K_PAGES
308 default 4
309
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000310source "init/Kconfig"
311
Matt Helsleydc52ddc2008-10-18 20:27:21 -0700312source "kernel/Kconfig.freezer"
313
Benjamin Herrenschmidta2d2e1e2007-12-21 15:39:24 +1100314source "arch/powerpc/sysdev/Kconfig"
Kumar Gala4330f5d2007-03-16 09:32:17 -0500315source "arch/powerpc/platforms/Kconfig"
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000316
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000317menu "Kernel options"
318
319config HIGHMEM
320 bool "High memory support"
321 depends on PPC32
322
323source kernel/Kconfig.hz
324source kernel/Kconfig.preempt
325source "fs/Kconfig.binfmt"
326
Mel Gormanba72cb82007-11-28 16:21:13 -0800327config HUGETLB_PAGE_SIZE_VARIABLE
328 bool
329 depends on HUGETLB_PAGE
330 default y
331
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000332config MATH_EMULATION
333 bool "Math emulation"
Benjamin Herrenschmidt4e63f8e2013-06-09 17:01:24 +1000334 depends on 4xx || 8xx || PPC_MPC832x || BOOKE
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000335 ---help---
336 Some PowerPC chips designed for embedded applications do not have
337 a floating-point unit and therefore do not implement the
338 floating-point instructions in the PowerPC instruction set. If you
339 say Y here, the kernel will include code to emulate a floating-point
340 unit, which will allow programs that use floating-point
341 instructions to run.
342
Benjamin Herrenschmidt4e63f8e2013-06-09 17:01:24 +1000343 This is also useful to emulate missing (optional) instructions
344 such as fsqrt on cores that do have an FPU but do not implement
345 them (such as Freescale BookE).
346
Kevin Haoe05c0e82013-07-16 19:57:15 +0800347choice
348 prompt "Math emulation options"
349 default MATH_EMULATION_FULL
350 depends on MATH_EMULATION
351
352config MATH_EMULATION_FULL
353 bool "Emulate all the floating point instructions"
354 ---help---
355 Select this option will enable the kernel to support to emulate
356 all the floating point instructions. If your SoC doesn't have
357 a FPU, you should select this.
358
359config MATH_EMULATION_HW_UNIMPLEMENTED
360 bool "Just emulate the FPU unimplemented instructions"
361 ---help---
362 Select this if you know there does have a hardware FPU on your
363 SoC, but some floating point instructions are not implemented by that.
364
365endchoice
366
Michael Neuling3d72bbc2013-02-13 16:21:43 +0000367config PPC_TRANSACTIONAL_MEM
368 bool "Transactional Memory support for POWERPC"
369 depends on PPC_BOOK3S_64
370 depends on SMP
Michael Neuling7b37a122014-01-08 21:25:31 +1100371 select ALTIVEC
372 select VSX
Michael Neuling3d72bbc2013-02-13 16:21:43 +0000373 default n
374 ---help---
375 Support user-mode Transactional Memory on POWERPC.
376
FUJITA Tomonorifb3475e2008-02-04 22:28:08 -0800377config IOMMU_HELPER
378 def_bool PPC64
379
Becky Bruceec3cf2e2009-05-14 12:42:28 +0000380config SWIOTLB
381 bool "SWIOTLB support"
382 default n
383 select IOMMU_HELPER
384 ---help---
385 Support for IO bounce buffering for systems without an IOMMU.
386 This allows us to DMA to the full physical address space on
387 platforms where the size of a physical address is larger
388 than the bus address. Not all platforms support this.
389
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000390config HOTPLUG_CPU
391 bool "Support for enabling/disabling CPUs"
Stephen Rothwell40b31362013-05-21 13:49:35 +1000392 depends on SMP && (PPC_PSERIES || \
Zhao Chenhuid0832a72012-07-20 20:42:36 +0800393 PPC_PMAC || PPC_POWERNV || (PPC_85xx && !PPC_E500MC))
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000394 ---help---
395 Say Y here to be able to disable and re-enable individual
396 CPUs at runtime on SMP machines.
397
398 Say N if you are unsure.
399
Nathan Fontenot12633e82009-11-25 17:23:25 +0000400config ARCH_CPU_PROBE_RELEASE
401 def_bool y
402 depends on HOTPLUG_CPU
403
Yasunori Gotocc576372006-06-29 02:24:27 -0700404config ARCH_ENABLE_MEMORY_HOTPLUG
405 def_bool y
406
Badari Pulavartya99824f2008-02-05 00:10:18 -0800407config ARCH_HAS_WALK_MEMORY
408 def_bool y
409
Badari Pulavarty14824712008-02-05 00:10:17 -0800410config ARCH_ENABLE_MEMORY_HOTREMOVE
411 def_bool y
412
Mahesh Salgaonkarf2296a32013-11-15 09:50:50 +0530413config PPC64_SUPPORTS_MEMORY_FAILURE
414 bool "Add support for memory hwpoison"
415 depends on PPC_BOOK3S_64
416 default "y" if PPC_POWERNV
417 select ARCH_SUPPORTS_MEMORY_FAILURE
418
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000419config KEXEC
Kees Cook642e56f2013-01-16 18:53:25 -0800420 bool "kexec system call"
421 depends on (PPC_BOOK3S || FSL_BOOKE || (44x && !SMP))
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000422 help
423 kexec is a system call that implements the ability to shutdown your
424 current kernel, and to start another kernel. It is like a reboot
Matt LaPlante1f1332f2006-06-29 01:32:47 -0400425 but it is independent of the system firmware. And like a reboot
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000426 you can start any kernel with it, not just Linux.
427
Matt LaPlante1f1332f2006-06-29 01:32:47 -0400428 The name comes from the similarity to the exec system call.
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000429
430 It is an ongoing process to be certain the hardware in a machine
431 is properly shutdown, so do not be surprised if this code does not
Geert Uytterhoevenbf220692013-08-20 21:38:03 +0200432 initially work for you. As of this writing the exact hardware
433 interface is strongly in flux, so no good recommendation can be
434 made.
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000435
Haren Mynenie8625d462006-01-14 13:48:25 -0800436config CRASH_DUMP
Bernhard Walle3420b5d2008-06-27 03:02:15 +1000437 bool "Build a kdump crash kernel"
Suzuki Poulose47da4212012-04-15 22:27:35 +0000438 depends on PPC64 || 6xx || FSL_BOOKE || (44x && !SMP)
Guenter Roeckfb43e842014-06-30 11:45:30 -0700439 select RELOCATABLE if (PPC64 && !COMPILE_TEST) || 44x || FSL_BOOKE
Haren Mynenie8625d462006-01-14 13:48:25 -0800440 help
441 Build a kernel suitable for use as a kdump capture kernel.
Mohan Kumar M54622f12008-10-21 17:38:10 +0000442 The same kernel binary can be used as production kernel and dump
443 capture kernel.
Haren Mynenie8625d462006-01-14 13:48:25 -0800444
Mahesh Salgaonkareb39c882012-02-16 01:14:22 +0000445config FA_DUMP
446 bool "Firmware-assisted dump"
Michael Ellerman90890b12013-10-28 15:00:35 +1100447 depends on PPC64 && PPC_RTAS && CRASH_DUMP && KEXEC
Manish Ahuja242f2712008-03-22 10:50:50 +1100448 help
Mahesh Salgaonkareb39c882012-02-16 01:14:22 +0000449 A robust mechanism to get reliable kernel crash dump with
450 assistance from firmware. This approach does not use kexec,
451 instead firmware assists in booting the kdump kernel
452 while preserving memory contents. Firmware-assisted dump
453 is meant to be a kdump replacement offering robustness and
454 speed not possible without system firmware assistance.
Manish Ahuja242f2712008-03-22 10:50:50 +1100455
456 If unsure, say "N"
457
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000458config IRQ_ALL_CPUS
459 bool "Distribute interrupts on all CPUs by default"
Paul Bolle6cf09b92013-05-15 11:21:01 +0200460 depends on SMP
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000461 help
462 This option gives the kernel permission to distribute IRQs across
463 multiple CPUs. Saying N here will route all IRQs to the first
464 CPU. Generally saying Y is safe, although some problems have been
465 reported with SMP Power Macintoshes with this option enabled.
466
Andy Whitcroftffa27b62005-10-28 17:46:58 -0700467config NUMA
468 bool "NUMA support"
469 depends on PPC64
470 default y if SMP && PPC_PSERIES
471
Yasunori Gotoc80d79d2006-04-10 22:53:53 -0700472config NODES_SHIFT
473 int
Anton Blanchardea55bf22009-09-21 19:56:43 +0000474 default "8" if PPC64
Yasunori Gotoc80d79d2006-04-10 22:53:53 -0700475 default "4"
476 depends on NEED_MULTIPLE_NODES
477
Nishanth Aravamudan8c272262014-05-19 11:14:23 -0700478config USE_PERCPU_NUMA_NODE_ID
479 def_bool y
480 depends on NUMA
481
Nishanth Aravamudan64bb80d2014-05-16 16:41:20 -0700482config HAVE_MEMORYLESS_NODES
483 def_bool y
484 depends on NUMA
485
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000486config ARCH_SELECT_MEMORY_MODEL
487 def_bool y
488 depends on PPC64
489
490config ARCH_FLATMEM_ENABLE
Andy Whitcroft9100b202005-11-29 19:20:55 +0000491 def_bool y
492 depends on (PPC64 && !NUMA) || PPC32
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000493
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000494config ARCH_SPARSEMEM_ENABLE
495 def_bool y
Andy Whitcroft9100b202005-11-29 19:20:55 +0000496 depends on PPC64
Andy Whitcroftd29eff72007-10-16 01:24:17 -0700497 select SPARSEMEM_VMEMMAP_ENABLE
Anton Blanchard45fb6ce2005-11-11 14:22:35 +1100498
499config ARCH_SPARSEMEM_DEFAULT
500 def_bool y
Benjamin Herrenschmidt78bde532007-02-13 11:46:06 +1100501 depends on (SMP && PPC_PSERIES) || PPC_PS3
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000502
Benjamin Herrenschmidt5a1eb5c2009-10-30 15:03:54 +1100503config SYS_SUPPORTS_HUGETLBFS
Becky Bruce41151e72011-06-28 09:54:48 +0000504 bool
Benjamin Herrenschmidt5a1eb5c2009-10-30 15:03:54 +1100505
Mel Gormanc67c3cb2006-09-27 01:49:49 -0700506source "mm/Kconfig"
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000507
Mike Kravetz7e9191d2005-11-07 09:39:48 -0800508config ARCH_MEMORY_PROBE
509 def_bool y
510 depends on MEMORY_HOTPLUG
511
Andy Whitcroft75167952006-10-21 10:24:14 -0700512# Some NUMA nodes have memory ranges that span
513# other nodes. Even though a pfn is valid and
514# between a node's start and end pfns, it may not
515# reside on that node. See memmap_init_zone()
516# for details.
517config NODES_SPAN_OTHER_NODES
518 def_bool y
519 depends on NEED_MULTIPLE_NODES
520
Benjamin Herrenschmidt16c2d472007-05-08 16:27:28 +1000521config PPC_HAS_HASH_64K
522 bool
523 depends on PPC64
524 default n
525
Yuri Tikhonove1240122009-01-29 01:40:44 +0000526config STDBINUTILS
527 bool "Using standard binutils settings"
528 depends on 44x
529 default y
530 help
531 Turning this option off allows you to select 256KB PAGE_SIZE on 44x.
532 Note, that kernel will be able to run only those applications,
533 which had been compiled using binutils later than 2.17.50.0.3 with
534 '-zmax-page-size' set to 256K (the default is 64K). Or, if using
535 the older binutils, you can patch them with a trivial patch, which
536 changes the ELF_MAXPAGESIZE definition from 0x10000 to 0x40000.
537
Ilya Yanokca9153a2008-12-11 04:55:41 +0300538choice
539 prompt "Page size"
540 default PPC_4K_PAGES
Benjamin Herrenschmidt3c726f82005-11-07 11:06:55 +1100541 help
Ilya Yanokca9153a2008-12-11 04:55:41 +0300542 Select the kernel logical page size. Increasing the page size
543 will reduce software overhead at each page boundary, allow
544 hardware prefetch mechanisms to be more effective, and allow
545 larger dma transfers increasing IO efficiency and reducing
546 overhead. However the utilization of memory will increase.
547 For example, each cached file will using a multiple of the
548 page size to hold its contents and the difference between the
549 end of file and the end of page is wasted.
550
551 Some dedicated systems, such as software raid serving with
552 accelerated calculations, have shown significant increases.
553
554 If you configure a 64 bit kernel for 64k pages but the
555 processor does not support them, then the kernel will simulate
556 them with 4k pages, loading them on demand, but with the
557 reduced software overhead and larger internal fragmentation.
558 For the 32 bit kernel, a large page option will not be offered
559 unless it is supported by the configured processor.
560
561 If unsure, choose 4K_PAGES.
562
563config PPC_4K_PAGES
564 bool "4k page size"
565
566config PPC_16K_PAGES
LEROY Christophe959d6172014-09-19 10:36:09 +0200567 bool "16k page size" if 44x || PPC_8xx
Ilya Yanokca9153a2008-12-11 04:55:41 +0300568
569config PPC_64K_PAGES
Benjamin Herrenschmidt2d27cfd2009-07-23 23:15:59 +0000570 bool "64k page size" if 44x || PPC_STD_MMU_64 || PPC_BOOK3E_64
Scott Wood9841c792014-01-17 18:36:38 -0600571 depends on !PPC_FSL_BOOK3E
Ilya Yanokca9153a2008-12-11 04:55:41 +0300572 select PPC_HAS_HASH_64K if PPC_STD_MMU_64
573
Yuri Tikhonove1240122009-01-29 01:40:44 +0000574config PPC_256K_PAGES
575 bool "256k page size" if 44x
Hugh Dickinsadf213c2009-04-06 11:01:15 +0000576 depends on !STDBINUTILS
Yuri Tikhonove1240122009-01-29 01:40:44 +0000577 help
578 Make the page size 256k.
579
580 As the ELF standard only requires alignment to support page
581 sizes up to 64k, you will need to compile all of your user
582 space applications with a non-standard binutils settings
583 (see the STDBINUTILS description for details).
584
585 Say N unless you know what you are doing.
586
Ilya Yanokca9153a2008-12-11 04:55:41 +0300587endchoice
Benjamin Herrenschmidt3c726f82005-11-07 11:06:55 +1100588
Stephen Rothwell53bcddb2008-04-11 11:11:56 +1000589config FORCE_MAX_ZONEORDER
590 int "Maximum zone order"
Benjamin Herrenschmidt066c4b82009-07-21 15:25:53 +0000591 range 9 64 if PPC64 && PPC_64K_PAGES
592 default "9" if PPC64 && PPC_64K_PAGES
593 range 13 64 if PPC64 && !PPC_64K_PAGES
594 default "13" if PPC64 && !PPC_64K_PAGES
595 range 9 64 if PPC32 && PPC_16K_PAGES
596 default "9" if PPC32 && PPC_16K_PAGES
597 range 7 64 if PPC32 && PPC_64K_PAGES
598 default "7" if PPC32 && PPC_64K_PAGES
599 range 5 64 if PPC32 && PPC_256K_PAGES
600 default "5" if PPC32 && PPC_256K_PAGES
Johannes Bergebe40c52008-09-24 04:29:08 +0000601 range 11 64
Stephen Rothwell53bcddb2008-04-11 11:11:56 +1000602 default "11"
603 help
604 The kernel memory allocator divides physically contiguous memory
605 blocks into "zones", where each zone is a power of two number of
606 pages. This option selects the largest power of two that the kernel
607 keeps in the memory allocator. If you need to allocate very large
608 blocks of physically contiguous memory, then you may need to
609 increase this value.
610
611 This config option is actually maximum order plus one. For example,
612 a value of 11 means that the largest free memory block is 2^10 pages.
613
614 The page size is not necessarily 4KB. For example, on 64-bit
615 systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES. Keep
616 this in mind when choosing a value for this option.
617
Paul Mackerrasfa282372008-01-24 08:35:13 +1100618config PPC_SUBPAGE_PROT
619 bool "Support setting protections for 4k subpages"
Ilya Yanokca9153a2008-12-11 04:55:41 +0300620 depends on PPC_STD_MMU_64 && PPC_64K_PAGES
Paul Mackerrasfa282372008-01-24 08:35:13 +1100621 help
622 This option adds support for a system call to allow user programs
623 to set access permissions (read/write, readonly, or no access)
624 on the 4k subpages of each 64k page.
625
Ian Munsiee83d0162014-10-08 19:54:50 +1100626config PPC_COPRO_BASE
627 bool
628 default n
629
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000630config SCHED_SMT
631 bool "SMT (Hyperthreading) scheduler support"
632 depends on PPC64 && SMP
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000633 help
634 SMT scheduler support improves the CPU scheduler's decision making
635 when dealing with POWER5 cpus at a cost of slightly increased
636 overhead in some places. If unsure say N here.
637
Michael Neulingb92a66a2012-09-10 00:35:26 +0000638config PPC_DENORMALISATION
639 bool "PowerPC denormalisation exception handling"
640 depends on PPC_BOOK3S_64
Anton Blanchard4e90a2a2013-07-31 16:31:26 +1000641 default "y" if PPC_POWERNV
Michael Neulingb92a66a2012-09-10 00:35:26 +0000642 ---help---
643 Add support for handling denormalisation of single precision
644 values. Useful for bare metal only. If unsure say Y here.
645
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000646config CMDLINE_BOOL
647 bool "Default bootloader kernel arguments"
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000648
649config CMDLINE
650 string "Initial kernel command string"
651 depends on CMDLINE_BOOL
652 default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
653 help
654 On some platforms, there is currently no way for the boot loader to
655 pass arguments to the kernel. For these platforms, you can supply
656 some command-line options at build time by entering them here. In
657 most cases you will need to specify the root device here.
658
Sebastian Siewioreb3b80f2014-02-20 21:48:17 +0100659config CMDLINE_FORCE
660 bool "Always use the default kernel command string"
661 depends on CMDLINE_BOOL
662 help
663 Always use the default kernel command string, even if the boot
664 loader passes other arguments to the kernel.
665 This is useful if you cannot or don't want to change the
666 command-line options your boot loader passes to the kernel.
667
Grant Likelyc356aa42008-07-09 09:41:52 -0600668config EXTRA_TARGETS
669 string "Additional default image types"
670 help
671 List additional targets to be built by the bootwrapper here (separated
672 by spaces). This is useful for targets that depend of device tree
673 files in the .dts directory.
674
675 Targets in this list will be build as part of the default build
676 target, or when the user does a 'make zImage' or a
677 'make zImage.initrd'.
678
679 If unsure, leave blank
680
Johannes Bergb28f5082008-01-15 23:17:00 -0500681config ARCH_WANTS_FREEZER_CONTROL
682 def_bool y
683 depends on ADB_PMU
684
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000685source kernel/power/Kconfig
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000686
687config SECCOMP
688 bool "Enable seccomp to safely compute untrusted bytecode"
689 depends on PROC_FS
690 default y
691 help
692 This kernel feature is useful for number crunching applications
693 that may need to compute untrusted bytecode during their
694 execution. By using pipes or other transports made available to
695 the process as file descriptors supporting the read/write
696 syscalls, it's possible to isolate those applications in
697 their own address space using seccomp. Once seccomp is
698 enabled via /proc/<pid>/seccomp, it cannot be disabled
699 and the task is only allowed to execute a few safe syscalls
700 defined by each seccomp mode.
701
702 If unsure, say Y. Only embedded should say N here.
703
704endmenu
705
706config ISA_DMA_API
707 bool
Stephen Rothwell3d066d72012-02-22 14:10:12 +0000708 default PCI
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000709
710menu "Bus options"
711
712config ISA
713 bool "Support for ISA-bus hardware"
Paul Bolle933ee712013-03-27 00:47:03 +0000714 depends on PPC_CHRP
Paul Mackerrasf9bd1702005-10-26 16:47:42 +1000715 select PPC_I8259
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000716 help
717 Find out whether you have ISA slots on your motherboard. ISA is the
718 name of a bus system, i.e. the way the CPU talks to the other stuff
719 inside your box. If you have an Apple machine, say N here; if you
Paul Bolle933ee712013-03-27 00:47:03 +0000720 have an IBM RS/6000 or pSeries machine, say Y. If you have an
721 embedded board, consult your board documentation.
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000722
Christoph Lameter5ac6da62007-02-10 01:43:14 -0800723config ZONE_DMA
724 bool
725 default y
726
FUJITA Tomonoriaf407c62010-03-10 15:23:27 -0800727config NEED_DMA_MAP_STATE
728 def_bool (PPC64 || NOT_COHERENT_CACHE)
729
FUJITA Tomonorie32205e2010-05-26 14:44:33 -0700730config NEED_SG_DMA_LENGTH
731 def_bool y
732
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000733config GENERIC_ISA_DMA
734 bool
Anton Vorontsov19274452010-07-15 07:38:16 +0000735 depends on ISA_DMA_API
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000736 default y
737
Paul Mackerras25635c72005-10-26 16:36:55 +1000738config PPC_INDIRECT_PCI
739 bool
740 depends on PCI
Becky Bruce63dafe52006-01-14 16:57:39 -0600741 default y if 40x || 44x
Paul Mackerras25635c72005-10-26 16:36:55 +1000742 default n
743
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000744config EISA
745 bool
746
747config SBUS
748 bool
749
Kumar Gala08264cb2006-01-10 21:43:56 -0600750config FSL_SOC
751 bool
752
Roy Zang55c44992007-07-10 18:44:34 +0800753config FSL_PCI
754 bool
755 select PPC_INDIRECT_PCI
Kumar Galad0839112009-01-28 13:25:29 -0600756 select PCI_QUIRKS
Roy Zang55c44992007-07-10 18:44:34 +0800757
Anton Vorontsov4ffd6952009-09-16 01:43:57 +0400758config FSL_PMC
759 bool
760 default y
761 depends on SUSPEND && (PPC_85xx || PPC_86xx)
762 help
763 Freescale MPC85xx/MPC86xx power management controller support
764 (suspend/resume). For MPC83xx see platforms/83xx/suspend.c
765
Victor Gallardod164f6d2010-10-08 10:25:27 +0000766config PPC4xx_CPM
767 bool
768 default y
769 depends on SUSPEND && (44x || 40x)
770 help
771 PPC4xx Clock Power Management (CPM) support (suspend/resume).
772 It also enables support for two different idle states (idle-wait
773 and idle-doze).
774
Stefan Roese2a706912008-03-26 22:39:50 +1100775config 4xx_SOC
776 bool
777
Anton Vorontsovacaa7aa2008-04-11 21:03:40 +0400778config FSL_LBC
Roy Zang3ab8f2a2010-10-18 15:22:31 +0800779 bool "Freescale Local Bus support"
780 depends on FSL_SOC
Anton Vorontsovacaa7aa2008-04-11 21:03:40 +0400781 help
Roy Zang3ab8f2a2010-10-18 15:22:31 +0800782 Enables reporting of errors from the Freescale local bus
783 controller. Also contains some common code used by
784 drivers for specific local bus peripherals.
Anton Vorontsovacaa7aa2008-04-11 21:03:40 +0400785
Anton Vorontsov83ff9dc2008-05-23 20:38:54 +0400786config FSL_GTM
787 bool
788 depends on PPC_83xx || QUICC_ENGINE || CPM2
789 help
790 Freescale General-purpose Timers support
791
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000792# Yes MCA RS/6000s exist but Linux-PPC does not currently support any
793config MCA
794 bool
795
John Rigbyb5005632008-06-26 11:07:56 -0600796# Platforms that what PCI turned unconditionally just do select PCI
797# in their config node. Platforms that want to choose at config
798# time should select PPC_PCI_CHOICE
799config PPC_PCI_CHOICE
800 bool
801
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000802config PCI
John Rigbyb5005632008-06-26 11:07:56 -0600803 bool "PCI support" if PPC_PCI_CHOICE
804 default y if !40x && !CPM2 && !8xx && !PPC_83xx \
Albert Herranzbcc48592009-12-12 06:31:39 +0000805 && !PPC_85xx && !PPC_86xx && !GAMECUBE_COMMON
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000806 default PCI_QSPAN if !4xx && !CPM2 && 8xx
Michael S. Tsirkin335b8cf2011-11-24 21:06:41 +0200807 select GENERIC_PCI_IOMAP
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000808 help
809 Find out whether your system includes a PCI bus. PCI is the name of
810 a bus system, i.e. the way the CPU talks to the other stuff inside
811 your box. If you say Y here, the kernel will include drivers and
812 infrastructure code to support PCI bus devices.
813
814config PCI_DOMAINS
Matthew Wilcox36e23592007-07-10 10:54:40 -0600815 def_bool PCI
816
817config PCI_SYSCALL
818 def_bool PCI
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000819
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000820config PCI_QSPAN
821 bool "QSpan PCI"
822 depends on !4xx && !CPM2 && 8xx
Paul Mackerrasf9bd1702005-10-26 16:47:42 +1000823 select PPC_I8259
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000824 help
825 Say Y here if you have a system based on a Motorola 8xx-series
826 embedded processor with a QSPAN PCI interface, otherwise say N.
827
828config PCI_8260
829 bool
830 depends on PCI && 8260
Paul Mackerras25635c72005-10-26 16:36:55 +1000831 select PPC_INDIRECT_PCI
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000832 default y
833
Jake Moilanenbb53bb32006-06-07 16:05:46 -0500834source "drivers/pci/pcie/Kconfig"
835
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000836source "drivers/pci/Kconfig"
837
838source "drivers/pcmcia/Kconfig"
839
840source "drivers/pci/hotplug/Kconfig"
841
Zhang Weif1f389d2008-04-18 13:33:39 -0700842config HAS_RAPIDIO
843 bool
844 default n
845
846config RAPIDIO
Alexandre Bounine56abde72014-01-23 15:56:04 -0800847 tristate "RapidIO support"
Alexandre Bounine388b78a2011-03-23 16:43:03 -0700848 depends on HAS_RAPIDIO || PCI
Zhang Weif1f389d2008-04-18 13:33:39 -0700849 help
850 If you say Y here, the kernel will include drivers and
851 infrastructure code to support RapidIO interconnect devices.
852
Alexandre Bounine388b78a2011-03-23 16:43:03 -0700853config FSL_RIO
854 bool "Freescale Embedded SRIO Controller support"
Alexandre Bounine56abde72014-01-23 15:56:04 -0800855 depends on RAPIDIO = y && HAS_RAPIDIO
Alexandre Bounine388b78a2011-03-23 16:43:03 -0700856 default "n"
857 ---help---
858 Include support for RapidIO controller on Freescale embedded
859 processors (MPC8548, MPC8641, etc).
860
Zhang Weif1f389d2008-04-18 13:33:39 -0700861source "drivers/rapidio/Kconfig"
862
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000863endmenu
864
Suzuki Poulose0f890c82011-12-14 22:57:15 +0000865config NONSTATIC_KERNEL
866 bool
867 default n
868
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000869menu "Advanced setup"
870 depends on PPC32
871
872config ADVANCED_OPTIONS
873 bool "Prompt for advanced kernel configuration options"
874 help
875 This option will enable prompting for a variety of advanced kernel
876 configuration options. These options can cause the kernel to not
877 work if they are set incorrectly, but can be used to optimize certain
878 aspects of kernel memory management.
879
880 Unless you know what you are doing, say N here.
881
882comment "Default settings for advanced configuration options are used"
883 depends on !ADVANCED_OPTIONS
884
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000885config LOWMEM_SIZE_BOOL
886 bool "Set maximum low memory"
887 depends on ADVANCED_OPTIONS
888 help
889 This option allows you to set the maximum amount of memory which
890 will be used as "low memory", that is, memory which the kernel can
891 access directly, without having to set up a kernel virtual mapping.
892 This can be useful in optimizing the layout of kernel virtual
893 memory.
894
895 Say N here unless you know what you are doing.
896
897config LOWMEM_SIZE
898 hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
899 default "0x30000000"
900
Trent Piepho96051462008-12-08 19:34:58 -0800901config LOWMEM_CAM_NUM_BOOL
902 bool "Set number of CAMs to use to map low memory"
903 depends on ADVANCED_OPTIONS && FSL_BOOKE
904 help
905 This option allows you to set the maximum number of CAM slots that
906 will be used to map low memory. There are a limited number of slots
907 available and even more limited number that will fit in the L1 MMU.
908 However, using more entries will allow mapping more low memory. This
909 can be useful in optimizing the layout of kernel virtual memory.
910
911 Say N here unless you know what you are doing.
912
913config LOWMEM_CAM_NUM
Josh Boyer9b71dbd2009-03-31 08:05:50 -0400914 depends on FSL_BOOKE
Trent Piepho96051462008-12-08 19:34:58 -0800915 int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL
916 default 3
917
Suzuki Poulose0f890c82011-12-14 22:57:15 +0000918config DYNAMIC_MEMSTART
Kees Cook642e56f2013-01-16 18:53:25 -0800919 bool "Enable page aligned dynamic load address for kernel"
920 depends on ADVANCED_OPTIONS && FLATMEM && (FSL_BOOKE || 44x)
Suzuki Poulose0f890c82011-12-14 22:57:15 +0000921 select NONSTATIC_KERNEL
Kumar Gala37dd2ba2008-04-22 04:22:34 +1000922 help
Suzuki Poulose0f890c82011-12-14 22:57:15 +0000923 This option enables the kernel to be loaded at any page aligned
924 physical address. The kernel creates a mapping from KERNELBASE to
925 the address where the kernel is loaded. The page size here implies
926 the TLB page size of the mapping for kernel on the particular platform.
927 Please refer to the init code for finding the TLB page size.
Kumar Gala37dd2ba2008-04-22 04:22:34 +1000928
Suzuki Poulose0f890c82011-12-14 22:57:15 +0000929 DYNAMIC_MEMSTART is an easy way of implementing pseudo-RELOCATABLE
930 kernel image, where the only restriction is the page aligned kernel
931 load address. When this option is enabled, the compile time physical
932 address CONFIG_PHYSICAL_START is ignored.
Kumar Gala37dd2ba2008-04-22 04:22:34 +1000933
Suzuki Poulose9c5f7d32011-12-14 22:58:12 +0000934 This option is overridden by CONFIG_RELOCATABLE
935
Kumar Gala37dd2ba2008-04-22 04:22:34 +1000936config RELOCATABLE
Kees Cook642e56f2013-01-16 18:53:25 -0800937 bool "Build a relocatable kernel"
Kevin Haodd189692013-12-24 15:12:06 +0800938 depends on ADVANCED_OPTIONS && FLATMEM && (44x || FSL_BOOKE)
Suzuki Poulose9c5f7d32011-12-14 22:58:12 +0000939 select NONSTATIC_KERNEL
Kumar Gala37dd2ba2008-04-22 04:22:34 +1000940 help
941 This builds a kernel image that is capable of running at the
Suzuki Poulose9c5f7d32011-12-14 22:58:12 +0000942 location the kernel is loaded at, without any alignment restrictions.
943 This feature is a superset of DYNAMIC_MEMSTART and hence overrides it.
Kumar Gala37dd2ba2008-04-22 04:22:34 +1000944
945 One use is for the kexec on panic case where the recovery kernel
946 must live at a different physical address than the primary
947 kernel.
948
949 Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address
950 it has been loaded at and the compile time physical addresses
951 CONFIG_PHYSICAL_START is ignored. However CONFIG_PHYSICAL_START
952 setting can still be useful to bootwrappers that need to know the
Suzuki Poulose9c5f7d32011-12-14 22:58:12 +0000953 load address of the kernel (eg. u-boot/mkimage).
954
955config RELOCATABLE_PPC32
956 def_bool y
957 depends on PPC32 && RELOCATABLE
Kumar Gala37dd2ba2008-04-22 04:22:34 +1000958
959config PAGE_OFFSET_BOOL
960 bool "Set custom page offset address"
961 depends on ADVANCED_OPTIONS
962 help
963 This option allows you to set the kernel virtual address at which
964 the kernel will map low memory. This can be useful in optimizing
965 the virtual memory layout of the system.
966
967 Say N here unless you know what you are doing.
968
969config PAGE_OFFSET
970 hex "Virtual address of memory base" if PAGE_OFFSET_BOOL
971 default "0xc0000000"
972
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000973config KERNEL_START_BOOL
974 bool "Set custom kernel base address"
975 depends on ADVANCED_OPTIONS
976 help
977 This option allows you to set the kernel virtual address at which
Kumar Gala37dd2ba2008-04-22 04:22:34 +1000978 the kernel will be loaded. Normally this should match PAGE_OFFSET
979 however there are times (like kdump) that one might not want them
980 to be the same.
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000981
982 Say N here unless you know what you are doing.
983
984config KERNEL_START
985 hex "Virtual address of kernel base" if KERNEL_START_BOOL
Kumar Gala37dd2ba2008-04-22 04:22:34 +1000986 default PAGE_OFFSET if PAGE_OFFSET_BOOL
Suzuki Poulose0f890c82011-12-14 22:57:15 +0000987 default "0xc2000000" if CRASH_DUMP && !NONSTATIC_KERNEL
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000988 default "0xc0000000"
989
Kumar Gala37dd2ba2008-04-22 04:22:34 +1000990config PHYSICAL_START_BOOL
991 bool "Set physical address where the kernel is loaded"
992 depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE
993 help
994 This gives the physical address where the kernel is loaded.
995
996 Say N here unless you know what you are doing.
997
998config PHYSICAL_START
999 hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL
Suzuki Poulose0f890c82011-12-14 22:57:15 +00001000 default "0x02000000" if PPC_STD_MMU && CRASH_DUMP && !NONSTATIC_KERNEL
Kumar Gala37dd2ba2008-04-22 04:22:34 +10001001 default "0x00000000"
1002
1003config PHYSICAL_ALIGN
1004 hex
Trent Piephoc8f35702008-12-08 19:34:59 -08001005 default "0x04000000" if FSL_BOOKE
Kumar Gala37dd2ba2008-04-22 04:22:34 +10001006 help
1007 This value puts the alignment restrictions on physical address
1008 where kernel is loaded and run from. Kernel is compiled for an
1009 address which meets above alignment restriction.
1010
Paul Mackerras14cf11a2005-09-26 16:04:21 +10001011config TASK_SIZE_BOOL
1012 bool "Set custom user task size"
1013 depends on ADVANCED_OPTIONS
1014 help
1015 This option allows you to set the amount of virtual address space
1016 allocated to user tasks. This can be useful in optimizing the
1017 virtual memory layout of the system.
1018
1019 Say N here unless you know what you are doing.
1020
1021config TASK_SIZE
1022 hex "Size of user task space" if TASK_SIZE_BOOL
Paul Bolle933ee712013-03-27 00:47:03 +00001023 default "0x80000000" if PPC_8xx
Kumar Gala4d9e55102007-10-11 13:40:21 -05001024 default "0xc0000000"
Paul Mackerras14cf11a2005-09-26 16:04:21 +10001025
Benjamin Herrenschmidt84532a02009-05-27 13:33:14 +10001026config CONSISTENT_SIZE_BOOL
1027 bool "Set custom consistent memory pool size"
1028 depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
1029 help
1030 This option allows you to set the size of the
1031 consistent memory pool. This pool of virtual memory
1032 is used to make consistent memory allocations.
1033
1034config CONSISTENT_SIZE
1035 hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
1036 default "0x00200000" if NOT_COHERENT_CACHE
1037
Paul Mackerras14cf11a2005-09-26 16:04:21 +10001038config PIN_TLB
1039 bool "Pinned Kernel TLBs (860 ONLY)"
1040 depends on ADVANCED_OPTIONS && 8xx
1041endmenu
1042
Stephen Rothwellcabb5582005-09-30 16:16:52 +10001043if PPC64
Paul Mackerras549e8152008-08-30 11:43:47 +10001044config RELOCATABLE
1045 bool "Build a relocatable kernel"
Guenter Roeckfb43e842014-06-30 11:45:30 -07001046 depends on !COMPILE_TEST
Suzuki Poulose0f890c82011-12-14 22:57:15 +00001047 select NONSTATIC_KERNEL
Paul Mackerras549e8152008-08-30 11:43:47 +10001048 help
1049 This builds a kernel image that is capable of running anywhere
1050 in the RMA (real memory area) at any 16k-aligned base address.
1051 The kernel is linked as a position-independent executable (PIE)
1052 and contains dynamic relocations which are processed early
1053 in the bootup process.
1054
1055 One use is for the kexec on panic case where the recovery kernel
1056 must live at a different physical address than the primary
1057 kernel.
1058
Paul Mackerrasbdbc29c2013-08-27 16:07:49 +10001059# This value must have zeroes in the bottom 60 bits otherwise lots will break
Kumar Gala37dd2ba2008-04-22 04:22:34 +10001060config PAGE_OFFSET
Stephen Rothwellcabb5582005-09-30 16:16:52 +10001061 hex
Stephen Rothwelleeb2d212005-09-30 17:24:15 +10001062 default "0xc000000000000000"
Kumar Gala37dd2ba2008-04-22 04:22:34 +10001063config KERNEL_START
1064 hex
Kumar Gala37dd2ba2008-04-22 04:22:34 +10001065 default "0xc000000000000000"
1066config PHYSICAL_START
1067 hex
Kumar Gala37dd2ba2008-04-22 04:22:34 +10001068 default "0x00000000"
Stephen Rothwellcabb5582005-09-30 16:16:52 +10001069endif
1070
Michael Ellermana4da0d52013-10-11 14:07:57 +11001071config ARCH_RANDOM
1072 def_bool n
1073
Paul Mackerras14cf11a2005-09-26 16:04:21 +10001074source "net/Kconfig"
1075
1076source "drivers/Kconfig"
1077
1078source "fs/Kconfig"
1079
Li Yang98658532006-10-03 23:10:46 -05001080source "arch/powerpc/sysdev/qe_lib/Kconfig"
1081
Paul Mackerras14cf11a2005-09-26 16:04:21 +10001082source "lib/Kconfig"
1083
Paul Mackerras14cf11a2005-09-26 16:04:21 +10001084source "arch/powerpc/Kconfig.debug"
1085
1086source "security/Kconfig"
1087
1088config KEYS_COMPAT
1089 bool
1090 depends on COMPAT && KEYS
1091 default y
1092
1093source "crypto/Kconfig"
Domen Puncer6f668282007-09-21 00:00:11 +10001094
Sylvain Munaut1088a202007-09-16 20:53:25 +10001095config PPC_LIB_RHEAP
1096 bool
1097
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -05001098source "arch/powerpc/kvm/Kconfig"