blob: 190cc48abc0cc683b8d53e9f8460d67cbe93c671 [file] [log] [blame]
Arnd Bergmanna0ae9c72007-06-13 02:30:17 +10001source "arch/powerpc/platforms/Kconfig.cputype"
Johannes Berg17e638b2007-03-19 11:53:53 +01002
Paul Mackerras14cf11a2005-09-26 16:04:21 +10003config PPC32
4 bool
5 default y if !PPC64
6
kerstin jonsson234a71a2010-10-22 00:17:55 +00007config 32BIT
8 bool
9 default y if PPC32
10
Paul Mackerras14cf11a2005-09-26 16:04:21 +100011config 64BIT
12 bool
13 default y if PPC64
14
Stephen Rothwell2578bfa2007-09-21 10:16:20 +100015config WORD_SIZE
16 int
17 default 64 if PPC64
18 default 32 if !PPC64
19
Jeremy Fitzhardinge600715d2008-09-11 01:31:45 -070020config ARCH_PHYS_ADDR_T_64BIT
21 def_bool PPC64 || PHYS_64BIT
22
FUJITA Tomonori787d44c2010-10-01 11:12:54 +000023config ARCH_DMA_ADDR_T_64BIT
24 def_bool ARCH_PHYS_ADDR_T_64BIT
25
Paul Mackerras14cf11a2005-09-26 16:04:21 +100026config MMU
27 bool
28 default y
29
Tejun Heoc2a7e812009-08-14 15:00:53 +090030config HAVE_SETUP_PER_CPU_AREA
Tejun Heoe74e3962009-03-30 19:07:44 +090031 def_bool PPC64
32
Tejun Heoc2a7e812009-08-14 15:00:53 +090033config NEED_PER_CPU_EMBED_FIRST_CHUNK
travis@sgi.comb32ef632008-01-30 13:32:51 +010034 def_bool PPC64
35
Michael Ellerman551b81f2009-10-13 19:44:44 +000036config NR_IRQS
37 int "Number of virtual interrupt numbers"
Anton Blanchard859aefc2010-01-31 01:14:03 +000038 range 32 32768
Michael Ellerman551b81f2009-10-13 19:44:44 +000039 default "512"
40 help
41 This defines the number of virtual interrupt numbers the kernel
42 can manage. Virtual interrupt numbers are what you see in
43 /proc/interrupts. If you configure your system to have too few,
44 drivers will fail to load or worse - handle with care.
45
Christoph Hellwigfd3e0bb2008-04-17 14:35:00 +100046config STACKTRACE_SUPPORT
47 bool
48 default y
49
Arnd Bergmann01f4b8b2008-07-11 00:08:18 +100050config HAVE_LATENCYTOP_SUPPORT
51 def_bool y
52
Benjamin Herrenschmidt945feb12008-04-17 14:35:01 +100053config TRACE_IRQFLAGS_SUPPORT
54 bool
Benjamin Herrenschmidt945feb12008-04-17 14:35:01 +100055 default y
56
57config LOCKDEP_SUPPORT
58 bool
59 default y
60
Paul Mackerras14cf11a2005-09-26 16:04:21 +100061config RWSEM_GENERIC_SPINLOCK
62 bool
63
64config RWSEM_XCHGADD_ALGORITHM
65 bool
66 default y
67
Nick Piggin95c354f2008-01-30 13:31:20 +010068config GENERIC_LOCKBREAK
69 bool
70 default y
71 depends on SMP && PREEMPT
72
David Howellsf0d1b0b2006-12-08 02:37:49 -080073config ARCH_HAS_ILOG2_U32
74 bool
David Howellsef55d532006-12-08 02:37:53 -080075 default y
David Howellsf0d1b0b2006-12-08 02:37:49 -080076
77config ARCH_HAS_ILOG2_U64
78 bool
David Howellsef55d532006-12-08 02:37:53 -080079 default y if 64BIT
David Howellsf0d1b0b2006-12-08 02:37:49 -080080
Akinobu Mitae779b2f2006-03-26 01:39:33 -080081config GENERIC_HWEIGHT
82 bool
83 default y
84
Paul Mackerras14cf11a2005-09-26 16:04:21 +100085config PPC
86 bool
87 default y
Mark Salterb7e7c372013-10-07 22:15:32 -040088 select ARCH_MIGHT_HAVE_PC_PARPORT
Mark Salterc74e6d32014-01-01 11:32:26 -080089 select ARCH_MIGHT_HAVE_PC_SERIO
Stephen Rothwelld812c0e12013-03-06 18:11:51 +000090 select BINFMT_ELF
Kees Cook2b68f6c2015-04-14 15:48:00 -070091 select ARCH_HAS_ELF_RANDOMIZE
Stephen Rothwell10f85f42010-06-29 12:43:34 +100092 select OF
Stephen Neuendorffere6ce1322010-11-18 15:54:56 -080093 select OF_EARLY_FLATTREE
Marek Szyprowski708b7ee2014-02-28 14:42:56 +010094 select OF_RESERVED_MEM
Steven Rostedt2b79d692009-01-06 18:49:17 +000095 select HAVE_FTRACE_MCOUNT_RECORD
96 select HAVE_DYNAMIC_FTRACE
Steven Rostedt606576c2008-10-06 19:06:12 -040097 select HAVE_FUNCTION_TRACER
Steven Rostedt60ce8f72009-02-11 20:06:43 -050098 select HAVE_FUNCTION_GRAPH_TRACER
Catalin Marinas7ac57a82012-10-08 16:28:16 -070099 select SYSCTL_EXCEPTION_TRACE
Michael Buesch7444a722008-07-25 01:46:11 -0700100 select ARCH_WANT_OPTIONAL_GPIOLIB
Stephen Rothwell4febd952013-03-07 15:48:16 +1100101 select VIRT_TO_BUS if !PPC64
Sam Ravnborgec7748b2008-02-09 10:46:40 +0100102 select HAVE_IDE
Benjamin Herrenschmidta1f242f2008-07-23 21:27:08 -0700103 select HAVE_IOREMAP_PROT
Anton Blanchard0b5e6662013-09-23 12:05:12 +1000104 select HAVE_EFFICIENT_UNALIGNED_ACCESS if !CPU_LITTLE_ENDIAN
Mathieu Desnoyers3f550092008-02-02 15:10:35 -0500105 select HAVE_KPROBES
Jason Wessel17ce4522008-07-23 11:30:15 -0500106 select HAVE_ARCH_KGDB
Ananth N Mavinakayanahalli9edddaa2008-03-04 14:28:37 -0800107 select HAVE_KRETPROBES
Roland McGrathdec2b0d2008-07-27 16:53:20 +1000108 select HAVE_ARCH_TRACEHOOK
Yinghai Lu95f72d12010-07-12 14:36:09 +1000109 select HAVE_MEMBLOCK
Tejun Heo1d7cfe12011-12-08 10:22:08 -0800110 select HAVE_MEMBLOCK_NODE_MAP
FUJITA Tomonori46bab4e2009-08-04 19:08:26 +0000111 select HAVE_DMA_ATTRS
FUJITA Tomonori80d3e8a2009-08-04 19:08:28 +0000112 select HAVE_DMA_API_DEBUG
Steven Rostedt4e491d12008-05-14 23:49:44 -0400113 select HAVE_OPROFILE
Catalin Marinasb69ec422012-10-08 16:28:11 -0700114 select HAVE_DEBUG_KMEMLEAK
Laura Abbott308c09f2014-08-08 14:23:25 -0700115 select ARCH_HAS_SG_CHAIN
Paul Mackerrasc2e95c62009-06-12 21:10:41 +0000116 select GENERIC_ATOMIC64 if PPC32
Catalin Marinas74634492012-07-30 14:41:09 -0700117 select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
Ingo Molnarcdd6c482009-09-21 12:02:48 +0200118 select HAVE_PERF_EVENTS
Mahesh Salgaonkar359e4282010-04-07 18:10:20 +1000119 select HAVE_REGS_AND_STACK_ACCESS_API
K.Prasad5aae8a52010-06-15 11:35:19 +0530120 select HAVE_HW_BREAKPOINT if PERF_EVENTS && PPC_BOOK3S_64
Will Deaconc1d7e012012-07-30 14:42:46 -0700121 select ARCH_WANT_IPC_PARSE_VERSION
Grant Likelyad5b7f132012-01-30 08:02:19 +0000122 select SPARSE_IRQ
Grant Likelycc79ca62012-02-16 01:37:49 -0700123 select IRQ_DOMAIN
Thomas Gleixner433c9c62011-03-25 17:04:59 +0100124 select GENERIC_IRQ_SHOW
125 select GENERIC_IRQ_SHOW_LEVEL
Thomas Gleixnere8d2c472011-10-05 02:30:51 +0000126 select IRQ_FORCED_THREADING
Peter Zijlstra26723912011-05-24 17:12:00 -0700127 select HAVE_RCU_TABLE_FREE if SMP
Ian Munsie02424d82011-02-02 17:27:24 +0000128 select HAVE_SYSCALL_TRACEPOINTS
Denis Kirjanoveb84bab2015-02-17 10:04:43 +0300129 select HAVE_BPF_JIT
Michael Ellermanac5f89c2011-06-29 19:16:59 +0000130 select HAVE_ARCH_JUMP_LABEL
Huang Yingdf013ff2011-07-13 13:14:22 +0800131 select ARCH_HAVE_NMI_SAFE_CMPXCHG
Riku Voipio957e3fa2014-12-12 16:57:44 -0800132 select ARCH_HAS_GCOV_PROFILE_ALL
Thomas Gleixner17e32ea2012-04-20 13:05:48 +0000133 select GENERIC_SMP_IDLE_THREAD
Anna-Maria Gleixnerb9ed27d2012-05-18 16:45:51 +0000134 select GENERIC_CMOS_UPDATE
John Stultz70639422012-09-04 15:34:21 -0400135 select GENERIC_TIME_VSYSCALL_OLD
Anna-Maria Gleixnerb9ed27d2012-05-18 16:45:51 +0000136 select GENERIC_CLOCKEVENTS
Preeti U Murthy0d948732014-02-26 05:39:06 +0530137 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
138 select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
Paul Mackerras16293722012-05-28 13:03:47 +1000139 select GENERIC_STRNCPY_FROM_USER
140 select GENERIC_STRNLEN_USER
David Howells786d35d2012-09-28 14:31:03 +0930141 select HAVE_MOD_ARCH_SPECIFIC
142 select MODULES_USE_ELF_RELA
Al Viro0bcfe542012-10-26 23:08:25 -0400143 select CLONE_BACKWARDS
David Woodhousefe3955c2012-12-19 15:14:17 +0000144 select ARCH_USE_BUILTIN_BSWAP
Al Viro0980cae2012-12-25 16:23:09 -0500145 select OLD_SIGSUSPEND
Al Viro09a4d5d2012-12-25 19:27:42 -0500146 select OLD_SIGACTION if PPC32
Dave Hansend1a1dc02013-07-01 13:04:42 -0700147 select HAVE_DEBUG_STACKOVERFLOW
Frederic Weisbecker62d26c82013-09-24 17:18:36 +0200148 select HAVE_IRQ_EXIT_ON_IRQ_STACK
Michael Ellerman3405d232014-01-15 18:14:28 +1100149 select ARCH_USE_CMPXCHG_LOCKREF if PPC64
AKASHI Takahiro7a017722014-02-25 18:16:24 +0900150 select HAVE_ARCH_AUDITSYSCALL
Peter Zijlstra4badad32014-06-06 19:53:16 +0200151 select ARCH_SUPPORTS_ATOMIC_RMW
Anton Blancharda75c3802014-09-19 09:40:21 +1000152 select DCACHE_WORD_ACCESS if PPC64 && CPU_LITTLE_ENDIAN
Anton Blanchard10239732014-09-17 22:15:33 +1000153 select NO_BOOTMEM
Aneesh Kumar K.Vb30e7592014-11-05 21:57:41 +0530154 select HAVE_GENERIC_RCU_GUP
Anton Blanchardc54b2bf2015-04-09 12:52:56 +1000155 select HAVE_PERF_EVENTS_NMI if PPC64
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000156
Anton Blanchard7a332b02013-09-23 12:04:51 +1000157config GENERIC_CSUM
158 def_bool CPU_LITTLE_ENDIAN
159
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000160config EARLY_PRINTK
161 bool
Benjamin Herrenschmidt51d30822005-11-23 17:57:25 +1100162 default y
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000163
Jason Baronb71d47c2013-11-25 23:23:11 +0000164config PANIC_TIMEOUT
165 int
166 default 180
167
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000168config COMPAT
169 bool
170 default y if PPC64
Roland McGrath01e31db2008-01-02 17:03:11 -0800171 select COMPAT_BINFMT_ELF
Chris Metcalf48b25c42012-03-15 13:13:38 -0400172 select ARCH_WANT_OLD_COMPAT_IPC
Al Viro09a4d5d2012-12-25 19:27:42 -0500173 select COMPAT_OLD_SIGACTION
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000174
175config SYSVIPC_COMPAT
176 bool
177 depends on COMPAT && SYSVIPC
178 default y
179
180# All PPC32s use generic nvram driver through ppc_md
181config GENERIC_NVRAM
182 bool
183 default y if PPC32
184
Ingo Molnarae1e9132008-11-11 09:05:16 +0100185config SCHED_OMIT_FRAME_POINTER
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000186 bool
187 default y
188
189config ARCH_MAY_HAVE_PC_FDC
190 bool
Pranith Kumar3484a312014-08-18 17:13:41 -0400191 default PCI
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000192
Kumar Gala08264cb2006-01-10 21:43:56 -0600193config PPC_UDBG_16550
194 bool
195 default n
196
Kumar Gala08264cb2006-01-10 21:43:56 -0600197config GENERIC_TBSYNC
198 bool
199 default y if PPC32 && SMP
200 default n
201
Al Viroe65e1fc2006-09-12 03:04:40 -0400202config AUDIT_ARCH
203 bool
204 default y
205
Jeremy Fitzhardinge73c9cea2006-12-08 03:30:41 -0800206config GENERIC_BUG
207 bool
208 default y
209 depends on BUG
210
Johannes Bergb3028872007-03-20 05:18:02 +1100211config SYS_SUPPORTS_APM_EMULATION
Kumar Gala58da10b2007-05-23 09:51:46 -0500212 default y if PMAC_APM_EMU
Johannes Bergb3028872007-03-20 05:18:02 +1100213 bool
214
David Gibson6c5b59b2011-04-14 18:29:16 +0000215config EPAPR_BOOT
216 bool
217 help
218 Used to allow a board to specify it wants an ePAPR compliant wrapper.
219 default n
220
Kumar Galaf4fc4a52006-01-16 10:53:22 -0600221config DEFAULT_UIMAGE
222 bool
223 help
224 Used to allow a board to specify it wants a uImage built by default
225 default n
226
Johannes Berg801e4062007-12-08 02:12:39 +0100227config ARCH_HIBERNATION_POSSIBLE
228 bool
Johannes Berg543b9fd2007-05-03 22:31:38 +1000229 default y
230
Johannes Bergf4cb5702007-12-08 02:14:00 +0100231config ARCH_SUSPEND_POSSIBLE
232 def_bool y
Anton Vorontsov4ffd6952009-09-16 01:43:57 +0400233 depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx || \
Zhao Chenhuid0832a72012-07-20 20:42:36 +0800234 (PPC_85xx && !PPC_E500MC) || PPC_86xx || PPC_PSERIES \
235 || 44x || 40x
Johannes Bergf4cb5702007-12-08 02:14:00 +0100236
Benjamin Herrenschmidt4c75a6f2006-11-11 17:24:53 +1100237config PPC_DCR_NATIVE
238 bool
239 default n
240
241config PPC_DCR_MMIO
242 bool
243 default n
244
245config PPC_DCR
246 bool
247 depends on PPC_DCR_NATIVE || PPC_DCR_MMIO
248 default y
249
Benjamin Herrenschmidt4c9d2802006-11-11 17:25:08 +1100250config PPC_OF_PLATFORM_PCI
251 bool
Stephen Rothwell373a6da2007-12-21 15:37:07 +1100252 depends on PCI
Benjamin Herrenschmidt4c9d2802006-11-11 17:25:08 +1100253 depends on PPC64 # not supported on 32 bits yet
254 default n
255
Akinobu Mita6a11f752009-03-31 15:23:17 -0700256config ARCH_SUPPORTS_DEBUG_PAGEALLOC
Kim Phillipsce614c32015-01-26 13:22:22 -0600257 depends on PPC32 || PPC_STD_MMU_64
Akinobu Mita6a11f752009-03-31 15:23:17 -0700258 def_bool y
259
Ananth N Mavinakayanahalli8b7b80b2012-08-23 21:31:32 +0000260config ARCH_SUPPORTS_UPROBES
261 def_bool y
262
Dave Kleikamp172ae2e2010-02-08 11:50:57 +0000263config PPC_ADV_DEBUG_REGS
264 bool
265 depends on 40x || BOOKE
266 default y
267
268config PPC_ADV_DEBUG_IACS
269 int
270 depends on PPC_ADV_DEBUG_REGS
271 default 4 if 44x
272 default 2
273
274config PPC_ADV_DEBUG_DACS
275 int
276 depends on PPC_ADV_DEBUG_REGS
277 default 2
278
279config PPC_ADV_DEBUG_DVCS
280 int
281 depends on PPC_ADV_DEBUG_REGS
282 default 2 if 44x
283 default 0
284
285config PPC_ADV_DEBUG_DAC_RANGE
286 bool
287 depends on PPC_ADV_DEBUG_REGS && 44x
288 default y
289
Suzuki K. Poulose5e249d42013-01-07 00:26:57 +0000290config PPC_EMULATE_SSTEP
291 bool
292 default y if KPROBES || UPROBES || XMON || HAVE_HW_BREAKPOINT
293
Scott Wood1c980252014-08-08 18:40:42 -0500294config ZONE_DMA32
295 bool
296 default y if PPC64
297
Kirill A. Shutemov06ef42a2015-04-14 15:45:57 -0700298config PGTABLE_LEVELS
299 int
300 default 2 if !PPC64
301 default 3 if PPC_64K_PAGES
302 default 4
303
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000304source "init/Kconfig"
305
Matt Helsleydc52ddc2008-10-18 20:27:21 -0700306source "kernel/Kconfig.freezer"
307
Benjamin Herrenschmidta2d2e1e2007-12-21 15:39:24 +1100308source "arch/powerpc/sysdev/Kconfig"
Kumar Gala4330f5d2007-03-16 09:32:17 -0500309source "arch/powerpc/platforms/Kconfig"
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000310
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000311menu "Kernel options"
312
313config HIGHMEM
314 bool "High memory support"
315 depends on PPC32
316
317source kernel/Kconfig.hz
318source kernel/Kconfig.preempt
319source "fs/Kconfig.binfmt"
320
Mel Gormanba72cb82007-11-28 16:21:13 -0800321config HUGETLB_PAGE_SIZE_VARIABLE
322 bool
323 depends on HUGETLB_PAGE
324 default y
325
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000326config MATH_EMULATION
327 bool "Math emulation"
Benjamin Herrenschmidt4e63f8e2013-06-09 17:01:24 +1000328 depends on 4xx || 8xx || PPC_MPC832x || BOOKE
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000329 ---help---
330 Some PowerPC chips designed for embedded applications do not have
331 a floating-point unit and therefore do not implement the
332 floating-point instructions in the PowerPC instruction set. If you
333 say Y here, the kernel will include code to emulate a floating-point
334 unit, which will allow programs that use floating-point
335 instructions to run.
336
Benjamin Herrenschmidt4e63f8e2013-06-09 17:01:24 +1000337 This is also useful to emulate missing (optional) instructions
338 such as fsqrt on cores that do have an FPU but do not implement
339 them (such as Freescale BookE).
340
Kevin Haoe05c0e82013-07-16 19:57:15 +0800341choice
342 prompt "Math emulation options"
343 default MATH_EMULATION_FULL
344 depends on MATH_EMULATION
345
346config MATH_EMULATION_FULL
347 bool "Emulate all the floating point instructions"
348 ---help---
349 Select this option will enable the kernel to support to emulate
350 all the floating point instructions. If your SoC doesn't have
351 a FPU, you should select this.
352
353config MATH_EMULATION_HW_UNIMPLEMENTED
354 bool "Just emulate the FPU unimplemented instructions"
355 ---help---
356 Select this if you know there does have a hardware FPU on your
357 SoC, but some floating point instructions are not implemented by that.
358
359endchoice
360
Michael Neuling3d72bbc2013-02-13 16:21:43 +0000361config PPC_TRANSACTIONAL_MEM
362 bool "Transactional Memory support for POWERPC"
363 depends on PPC_BOOK3S_64
364 depends on SMP
Michael Neuling7b37a122014-01-08 21:25:31 +1100365 select ALTIVEC
366 select VSX
Michael Neuling3d72bbc2013-02-13 16:21:43 +0000367 default n
368 ---help---
369 Support user-mode Transactional Memory on POWERPC.
370
FUJITA Tomonorifb3475e2008-02-04 22:28:08 -0800371config IOMMU_HELPER
372 def_bool PPC64
373
Becky Bruceec3cf2e2009-05-14 12:42:28 +0000374config SWIOTLB
375 bool "SWIOTLB support"
376 default n
377 select IOMMU_HELPER
378 ---help---
379 Support for IO bounce buffering for systems without an IOMMU.
380 This allows us to DMA to the full physical address space on
381 platforms where the size of a physical address is larger
382 than the bus address. Not all platforms support this.
383
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000384config HOTPLUG_CPU
385 bool "Support for enabling/disabling CPUs"
Stephen Rothwell40b31362013-05-21 13:49:35 +1000386 depends on SMP && (PPC_PSERIES || \
Zhao Chenhuid0832a72012-07-20 20:42:36 +0800387 PPC_PMAC || PPC_POWERNV || (PPC_85xx && !PPC_E500MC))
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000388 ---help---
389 Say Y here to be able to disable and re-enable individual
390 CPUs at runtime on SMP machines.
391
392 Say N if you are unsure.
393
Nathan Fontenot12633e82009-11-25 17:23:25 +0000394config ARCH_CPU_PROBE_RELEASE
395 def_bool y
396 depends on HOTPLUG_CPU
397
Yasunori Gotocc576372006-06-29 02:24:27 -0700398config ARCH_ENABLE_MEMORY_HOTPLUG
399 def_bool y
400
Badari Pulavartya99824f2008-02-05 00:10:18 -0800401config ARCH_HAS_WALK_MEMORY
402 def_bool y
403
Badari Pulavarty14824712008-02-05 00:10:17 -0800404config ARCH_ENABLE_MEMORY_HOTREMOVE
405 def_bool y
406
Mahesh Salgaonkarf2296a32013-11-15 09:50:50 +0530407config PPC64_SUPPORTS_MEMORY_FAILURE
408 bool "Add support for memory hwpoison"
409 depends on PPC_BOOK3S_64
410 default "y" if PPC_POWERNV
411 select ARCH_SUPPORTS_MEMORY_FAILURE
412
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000413config KEXEC
Kees Cook642e56f2013-01-16 18:53:25 -0800414 bool "kexec system call"
415 depends on (PPC_BOOK3S || FSL_BOOKE || (44x && !SMP))
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000416 help
417 kexec is a system call that implements the ability to shutdown your
418 current kernel, and to start another kernel. It is like a reboot
Matt LaPlante1f1332f2006-06-29 01:32:47 -0400419 but it is independent of the system firmware. And like a reboot
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000420 you can start any kernel with it, not just Linux.
421
Matt LaPlante1f1332f2006-06-29 01:32:47 -0400422 The name comes from the similarity to the exec system call.
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000423
424 It is an ongoing process to be certain the hardware in a machine
425 is properly shutdown, so do not be surprised if this code does not
Geert Uytterhoevenbf220692013-08-20 21:38:03 +0200426 initially work for you. As of this writing the exact hardware
427 interface is strongly in flux, so no good recommendation can be
428 made.
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000429
Haren Mynenie8625d462006-01-14 13:48:25 -0800430config CRASH_DUMP
Bernhard Walle3420b5d2008-06-27 03:02:15 +1000431 bool "Build a kdump crash kernel"
Suzuki Poulose47da4212012-04-15 22:27:35 +0000432 depends on PPC64 || 6xx || FSL_BOOKE || (44x && !SMP)
Guenter Roeckfb43e842014-06-30 11:45:30 -0700433 select RELOCATABLE if (PPC64 && !COMPILE_TEST) || 44x || FSL_BOOKE
Haren Mynenie8625d462006-01-14 13:48:25 -0800434 help
435 Build a kernel suitable for use as a kdump capture kernel.
Mohan Kumar M54622f12008-10-21 17:38:10 +0000436 The same kernel binary can be used as production kernel and dump
437 capture kernel.
Haren Mynenie8625d462006-01-14 13:48:25 -0800438
Mahesh Salgaonkareb39c882012-02-16 01:14:22 +0000439config FA_DUMP
440 bool "Firmware-assisted dump"
Michael Ellerman90890b12013-10-28 15:00:35 +1100441 depends on PPC64 && PPC_RTAS && CRASH_DUMP && KEXEC
Manish Ahuja242f2712008-03-22 10:50:50 +1100442 help
Mahesh Salgaonkareb39c882012-02-16 01:14:22 +0000443 A robust mechanism to get reliable kernel crash dump with
444 assistance from firmware. This approach does not use kexec,
445 instead firmware assists in booting the kdump kernel
446 while preserving memory contents. Firmware-assisted dump
447 is meant to be a kdump replacement offering robustness and
448 speed not possible without system firmware assistance.
Manish Ahuja242f2712008-03-22 10:50:50 +1100449
450 If unsure, say "N"
451
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000452config IRQ_ALL_CPUS
453 bool "Distribute interrupts on all CPUs by default"
Paul Bolle6cf09b92013-05-15 11:21:01 +0200454 depends on SMP
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000455 help
456 This option gives the kernel permission to distribute IRQs across
457 multiple CPUs. Saying N here will route all IRQs to the first
458 CPU. Generally saying Y is safe, although some problems have been
459 reported with SMP Power Macintoshes with this option enabled.
460
Andy Whitcroftffa27b62005-10-28 17:46:58 -0700461config NUMA
462 bool "NUMA support"
463 depends on PPC64
464 default y if SMP && PPC_PSERIES
465
Yasunori Gotoc80d79d2006-04-10 22:53:53 -0700466config NODES_SHIFT
467 int
Anton Blanchardea55bf22009-09-21 19:56:43 +0000468 default "8" if PPC64
Yasunori Gotoc80d79d2006-04-10 22:53:53 -0700469 default "4"
470 depends on NEED_MULTIPLE_NODES
471
Nishanth Aravamudan8c272262014-05-19 11:14:23 -0700472config USE_PERCPU_NUMA_NODE_ID
473 def_bool y
474 depends on NUMA
475
Nishanth Aravamudan64bb80d2014-05-16 16:41:20 -0700476config HAVE_MEMORYLESS_NODES
477 def_bool y
478 depends on NUMA
479
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000480config ARCH_SELECT_MEMORY_MODEL
481 def_bool y
482 depends on PPC64
483
484config ARCH_FLATMEM_ENABLE
Andy Whitcroft9100b202005-11-29 19:20:55 +0000485 def_bool y
486 depends on (PPC64 && !NUMA) || PPC32
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000487
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000488config ARCH_SPARSEMEM_ENABLE
489 def_bool y
Andy Whitcroft9100b202005-11-29 19:20:55 +0000490 depends on PPC64
Andy Whitcroftd29eff72007-10-16 01:24:17 -0700491 select SPARSEMEM_VMEMMAP_ENABLE
Anton Blanchard45fb6ce2005-11-11 14:22:35 +1100492
493config ARCH_SPARSEMEM_DEFAULT
494 def_bool y
Benjamin Herrenschmidt78bde532007-02-13 11:46:06 +1100495 depends on (SMP && PPC_PSERIES) || PPC_PS3
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000496
Benjamin Herrenschmidt5a1eb5c2009-10-30 15:03:54 +1100497config SYS_SUPPORTS_HUGETLBFS
Becky Bruce41151e72011-06-28 09:54:48 +0000498 bool
Benjamin Herrenschmidt5a1eb5c2009-10-30 15:03:54 +1100499
Mel Gormanc67c3cb2006-09-27 01:49:49 -0700500source "mm/Kconfig"
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000501
Mike Kravetz7e9191d2005-11-07 09:39:48 -0800502config ARCH_MEMORY_PROBE
503 def_bool y
504 depends on MEMORY_HOTPLUG
505
Andy Whitcroft75167952006-10-21 10:24:14 -0700506# Some NUMA nodes have memory ranges that span
507# other nodes. Even though a pfn is valid and
508# between a node's start and end pfns, it may not
509# reside on that node. See memmap_init_zone()
510# for details.
511config NODES_SPAN_OTHER_NODES
512 def_bool y
513 depends on NEED_MULTIPLE_NODES
514
Benjamin Herrenschmidt16c2d472007-05-08 16:27:28 +1000515config PPC_HAS_HASH_64K
516 bool
517 depends on PPC64
518 default n
519
Yuri Tikhonove1240122009-01-29 01:40:44 +0000520config STDBINUTILS
521 bool "Using standard binutils settings"
522 depends on 44x
523 default y
524 help
525 Turning this option off allows you to select 256KB PAGE_SIZE on 44x.
526 Note, that kernel will be able to run only those applications,
527 which had been compiled using binutils later than 2.17.50.0.3 with
528 '-zmax-page-size' set to 256K (the default is 64K). Or, if using
529 the older binutils, you can patch them with a trivial patch, which
530 changes the ELF_MAXPAGESIZE definition from 0x10000 to 0x40000.
531
Ilya Yanokca9153a2008-12-11 04:55:41 +0300532choice
533 prompt "Page size"
534 default PPC_4K_PAGES
Benjamin Herrenschmidt3c726f82005-11-07 11:06:55 +1100535 help
Ilya Yanokca9153a2008-12-11 04:55:41 +0300536 Select the kernel logical page size. Increasing the page size
537 will reduce software overhead at each page boundary, allow
538 hardware prefetch mechanisms to be more effective, and allow
539 larger dma transfers increasing IO efficiency and reducing
540 overhead. However the utilization of memory will increase.
541 For example, each cached file will using a multiple of the
542 page size to hold its contents and the difference between the
543 end of file and the end of page is wasted.
544
545 Some dedicated systems, such as software raid serving with
546 accelerated calculations, have shown significant increases.
547
548 If you configure a 64 bit kernel for 64k pages but the
549 processor does not support them, then the kernel will simulate
550 them with 4k pages, loading them on demand, but with the
551 reduced software overhead and larger internal fragmentation.
552 For the 32 bit kernel, a large page option will not be offered
553 unless it is supported by the configured processor.
554
555 If unsure, choose 4K_PAGES.
556
557config PPC_4K_PAGES
558 bool "4k page size"
559
560config PPC_16K_PAGES
LEROY Christophe959d6172014-09-19 10:36:09 +0200561 bool "16k page size" if 44x || PPC_8xx
Ilya Yanokca9153a2008-12-11 04:55:41 +0300562
563config PPC_64K_PAGES
Benjamin Herrenschmidt2d27cfd2009-07-23 23:15:59 +0000564 bool "64k page size" if 44x || PPC_STD_MMU_64 || PPC_BOOK3E_64
Scott Wood9841c792014-01-17 18:36:38 -0600565 depends on !PPC_FSL_BOOK3E
Ilya Yanokca9153a2008-12-11 04:55:41 +0300566 select PPC_HAS_HASH_64K if PPC_STD_MMU_64
567
Yuri Tikhonove1240122009-01-29 01:40:44 +0000568config PPC_256K_PAGES
569 bool "256k page size" if 44x
Hugh Dickinsadf213c2009-04-06 11:01:15 +0000570 depends on !STDBINUTILS
Yuri Tikhonove1240122009-01-29 01:40:44 +0000571 help
572 Make the page size 256k.
573
574 As the ELF standard only requires alignment to support page
575 sizes up to 64k, you will need to compile all of your user
576 space applications with a non-standard binutils settings
577 (see the STDBINUTILS description for details).
578
579 Say N unless you know what you are doing.
580
Ilya Yanokca9153a2008-12-11 04:55:41 +0300581endchoice
Benjamin Herrenschmidt3c726f82005-11-07 11:06:55 +1100582
Stephen Rothwell53bcddb2008-04-11 11:11:56 +1000583config FORCE_MAX_ZONEORDER
584 int "Maximum zone order"
Benjamin Herrenschmidt066c4b82009-07-21 15:25:53 +0000585 range 9 64 if PPC64 && PPC_64K_PAGES
586 default "9" if PPC64 && PPC_64K_PAGES
587 range 13 64 if PPC64 && !PPC_64K_PAGES
588 default "13" if PPC64 && !PPC_64K_PAGES
589 range 9 64 if PPC32 && PPC_16K_PAGES
590 default "9" if PPC32 && PPC_16K_PAGES
591 range 7 64 if PPC32 && PPC_64K_PAGES
592 default "7" if PPC32 && PPC_64K_PAGES
593 range 5 64 if PPC32 && PPC_256K_PAGES
594 default "5" if PPC32 && PPC_256K_PAGES
Johannes Bergebe40c52008-09-24 04:29:08 +0000595 range 11 64
Stephen Rothwell53bcddb2008-04-11 11:11:56 +1000596 default "11"
597 help
598 The kernel memory allocator divides physically contiguous memory
599 blocks into "zones", where each zone is a power of two number of
600 pages. This option selects the largest power of two that the kernel
601 keeps in the memory allocator. If you need to allocate very large
602 blocks of physically contiguous memory, then you may need to
603 increase this value.
604
605 This config option is actually maximum order plus one. For example,
606 a value of 11 means that the largest free memory block is 2^10 pages.
607
608 The page size is not necessarily 4KB. For example, on 64-bit
609 systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES. Keep
610 this in mind when choosing a value for this option.
611
Paul Mackerrasfa282372008-01-24 08:35:13 +1100612config PPC_SUBPAGE_PROT
613 bool "Support setting protections for 4k subpages"
Ilya Yanokca9153a2008-12-11 04:55:41 +0300614 depends on PPC_STD_MMU_64 && PPC_64K_PAGES
Paul Mackerrasfa282372008-01-24 08:35:13 +1100615 help
616 This option adds support for a system call to allow user programs
617 to set access permissions (read/write, readonly, or no access)
618 on the 4k subpages of each 64k page.
619
Ian Munsiee83d0162014-10-08 19:54:50 +1100620config PPC_COPRO_BASE
621 bool
622 default n
623
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000624config SCHED_SMT
625 bool "SMT (Hyperthreading) scheduler support"
626 depends on PPC64 && SMP
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000627 help
628 SMT scheduler support improves the CPU scheduler's decision making
629 when dealing with POWER5 cpus at a cost of slightly increased
630 overhead in some places. If unsure say N here.
631
Michael Neulingb92a66a2012-09-10 00:35:26 +0000632config PPC_DENORMALISATION
633 bool "PowerPC denormalisation exception handling"
634 depends on PPC_BOOK3S_64
Anton Blanchard4e90a2a2013-07-31 16:31:26 +1000635 default "y" if PPC_POWERNV
Michael Neulingb92a66a2012-09-10 00:35:26 +0000636 ---help---
637 Add support for handling denormalisation of single precision
638 values. Useful for bare metal only. If unsure say Y here.
639
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000640config CMDLINE_BOOL
641 bool "Default bootloader kernel arguments"
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000642
643config CMDLINE
644 string "Initial kernel command string"
645 depends on CMDLINE_BOOL
646 default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
647 help
648 On some platforms, there is currently no way for the boot loader to
649 pass arguments to the kernel. For these platforms, you can supply
650 some command-line options at build time by entering them here. In
651 most cases you will need to specify the root device here.
652
Sebastian Siewioreb3b80f2014-02-20 21:48:17 +0100653config CMDLINE_FORCE
654 bool "Always use the default kernel command string"
655 depends on CMDLINE_BOOL
656 help
657 Always use the default kernel command string, even if the boot
658 loader passes other arguments to the kernel.
659 This is useful if you cannot or don't want to change the
660 command-line options your boot loader passes to the kernel.
661
Grant Likelyc356aa42008-07-09 09:41:52 -0600662config EXTRA_TARGETS
663 string "Additional default image types"
664 help
665 List additional targets to be built by the bootwrapper here (separated
666 by spaces). This is useful for targets that depend of device tree
667 files in the .dts directory.
668
669 Targets in this list will be build as part of the default build
670 target, or when the user does a 'make zImage' or a
671 'make zImage.initrd'.
672
673 If unsure, leave blank
674
Johannes Bergb28f5082008-01-15 23:17:00 -0500675config ARCH_WANTS_FREEZER_CONTROL
676 def_bool y
677 depends on ADB_PMU
678
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000679source kernel/power/Kconfig
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000680
681config SECCOMP
682 bool "Enable seccomp to safely compute untrusted bytecode"
683 depends on PROC_FS
684 default y
685 help
686 This kernel feature is useful for number crunching applications
687 that may need to compute untrusted bytecode during their
688 execution. By using pipes or other transports made available to
689 the process as file descriptors supporting the read/write
690 syscalls, it's possible to isolate those applications in
691 their own address space using seccomp. Once seccomp is
692 enabled via /proc/<pid>/seccomp, it cannot be disabled
693 and the task is only allowed to execute a few safe syscalls
694 defined by each seccomp mode.
695
696 If unsure, say Y. Only embedded should say N here.
697
698endmenu
699
700config ISA_DMA_API
701 bool
Stephen Rothwell3d066d72012-02-22 14:10:12 +0000702 default PCI
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000703
704menu "Bus options"
705
706config ISA
707 bool "Support for ISA-bus hardware"
Paul Bolle933ee712013-03-27 00:47:03 +0000708 depends on PPC_CHRP
Paul Mackerrasf9bd1702005-10-26 16:47:42 +1000709 select PPC_I8259
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000710 help
711 Find out whether you have ISA slots on your motherboard. ISA is the
712 name of a bus system, i.e. the way the CPU talks to the other stuff
713 inside your box. If you have an Apple machine, say N here; if you
Paul Bolle933ee712013-03-27 00:47:03 +0000714 have an IBM RS/6000 or pSeries machine, say Y. If you have an
715 embedded board, consult your board documentation.
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000716
Christoph Lameter5ac6da62007-02-10 01:43:14 -0800717config ZONE_DMA
718 bool
719 default y
720
FUJITA Tomonoriaf407c62010-03-10 15:23:27 -0800721config NEED_DMA_MAP_STATE
722 def_bool (PPC64 || NOT_COHERENT_CACHE)
723
FUJITA Tomonorie32205e2010-05-26 14:44:33 -0700724config NEED_SG_DMA_LENGTH
725 def_bool y
726
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000727config GENERIC_ISA_DMA
728 bool
Anton Vorontsov19274452010-07-15 07:38:16 +0000729 depends on ISA_DMA_API
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000730 default y
731
Paul Mackerras25635c72005-10-26 16:36:55 +1000732config PPC_INDIRECT_PCI
733 bool
734 depends on PCI
Becky Bruce63dafe52006-01-14 16:57:39 -0600735 default y if 40x || 44x
Paul Mackerras25635c72005-10-26 16:36:55 +1000736 default n
737
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000738config EISA
739 bool
740
741config SBUS
742 bool
743
Kumar Gala08264cb2006-01-10 21:43:56 -0600744config FSL_SOC
745 bool
746
Roy Zang55c44992007-07-10 18:44:34 +0800747config FSL_PCI
748 bool
749 select PPC_INDIRECT_PCI
Kumar Galad0839112009-01-28 13:25:29 -0600750 select PCI_QUIRKS
Roy Zang55c44992007-07-10 18:44:34 +0800751
Anton Vorontsov4ffd6952009-09-16 01:43:57 +0400752config FSL_PMC
753 bool
754 default y
755 depends on SUSPEND && (PPC_85xx || PPC_86xx)
756 help
757 Freescale MPC85xx/MPC86xx power management controller support
758 (suspend/resume). For MPC83xx see platforms/83xx/suspend.c
759
Victor Gallardod164f6d2010-10-08 10:25:27 +0000760config PPC4xx_CPM
761 bool
762 default y
763 depends on SUSPEND && (44x || 40x)
764 help
765 PPC4xx Clock Power Management (CPM) support (suspend/resume).
766 It also enables support for two different idle states (idle-wait
767 and idle-doze).
768
Stefan Roese2a706912008-03-26 22:39:50 +1100769config 4xx_SOC
770 bool
771
Anton Vorontsovacaa7aa2008-04-11 21:03:40 +0400772config FSL_LBC
Roy Zang3ab8f2a2010-10-18 15:22:31 +0800773 bool "Freescale Local Bus support"
774 depends on FSL_SOC
Anton Vorontsovacaa7aa2008-04-11 21:03:40 +0400775 help
Roy Zang3ab8f2a2010-10-18 15:22:31 +0800776 Enables reporting of errors from the Freescale local bus
777 controller. Also contains some common code used by
778 drivers for specific local bus peripherals.
Anton Vorontsovacaa7aa2008-04-11 21:03:40 +0400779
Anton Vorontsov83ff9dc2008-05-23 20:38:54 +0400780config FSL_GTM
781 bool
782 depends on PPC_83xx || QUICC_ENGINE || CPM2
783 help
784 Freescale General-purpose Timers support
785
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000786# Yes MCA RS/6000s exist but Linux-PPC does not currently support any
787config MCA
788 bool
789
John Rigbyb5005632008-06-26 11:07:56 -0600790# Platforms that what PCI turned unconditionally just do select PCI
791# in their config node. Platforms that want to choose at config
792# time should select PPC_PCI_CHOICE
793config PPC_PCI_CHOICE
794 bool
795
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000796config PCI
John Rigbyb5005632008-06-26 11:07:56 -0600797 bool "PCI support" if PPC_PCI_CHOICE
798 default y if !40x && !CPM2 && !8xx && !PPC_83xx \
Albert Herranzbcc48592009-12-12 06:31:39 +0000799 && !PPC_85xx && !PPC_86xx && !GAMECUBE_COMMON
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000800 default PCI_QSPAN if !4xx && !CPM2 && 8xx
Michael S. Tsirkin335b8cf2011-11-24 21:06:41 +0200801 select GENERIC_PCI_IOMAP
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000802 help
803 Find out whether your system includes a PCI bus. PCI is the name of
804 a bus system, i.e. the way the CPU talks to the other stuff inside
805 your box. If you say Y here, the kernel will include drivers and
806 infrastructure code to support PCI bus devices.
807
808config PCI_DOMAINS
Matthew Wilcox36e23592007-07-10 10:54:40 -0600809 def_bool PCI
810
811config PCI_SYSCALL
812 def_bool PCI
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000813
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000814config PCI_QSPAN
815 bool "QSpan PCI"
816 depends on !4xx && !CPM2 && 8xx
Paul Mackerrasf9bd1702005-10-26 16:47:42 +1000817 select PPC_I8259
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000818 help
819 Say Y here if you have a system based on a Motorola 8xx-series
820 embedded processor with a QSPAN PCI interface, otherwise say N.
821
822config PCI_8260
823 bool
824 depends on PCI && 8260
Paul Mackerras25635c72005-10-26 16:36:55 +1000825 select PPC_INDIRECT_PCI
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000826 default y
827
Jake Moilanenbb53bb32006-06-07 16:05:46 -0500828source "drivers/pci/pcie/Kconfig"
829
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000830source "drivers/pci/Kconfig"
831
832source "drivers/pcmcia/Kconfig"
833
834source "drivers/pci/hotplug/Kconfig"
835
Zhang Weif1f389d2008-04-18 13:33:39 -0700836config HAS_RAPIDIO
837 bool
838 default n
839
840config RAPIDIO
Alexandre Bounine56abde72014-01-23 15:56:04 -0800841 tristate "RapidIO support"
Alexandre Bounine388b78a2011-03-23 16:43:03 -0700842 depends on HAS_RAPIDIO || PCI
Zhang Weif1f389d2008-04-18 13:33:39 -0700843 help
844 If you say Y here, the kernel will include drivers and
845 infrastructure code to support RapidIO interconnect devices.
846
Alexandre Bounine388b78a2011-03-23 16:43:03 -0700847config FSL_RIO
848 bool "Freescale Embedded SRIO Controller support"
Alexandre Bounine56abde72014-01-23 15:56:04 -0800849 depends on RAPIDIO = y && HAS_RAPIDIO
Alexandre Bounine388b78a2011-03-23 16:43:03 -0700850 default "n"
851 ---help---
852 Include support for RapidIO controller on Freescale embedded
853 processors (MPC8548, MPC8641, etc).
854
Zhang Weif1f389d2008-04-18 13:33:39 -0700855source "drivers/rapidio/Kconfig"
856
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000857endmenu
858
Suzuki Poulose0f890c82011-12-14 22:57:15 +0000859config NONSTATIC_KERNEL
860 bool
861 default n
862
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000863menu "Advanced setup"
864 depends on PPC32
865
866config ADVANCED_OPTIONS
867 bool "Prompt for advanced kernel configuration options"
868 help
869 This option will enable prompting for a variety of advanced kernel
870 configuration options. These options can cause the kernel to not
871 work if they are set incorrectly, but can be used to optimize certain
872 aspects of kernel memory management.
873
874 Unless you know what you are doing, say N here.
875
876comment "Default settings for advanced configuration options are used"
877 depends on !ADVANCED_OPTIONS
878
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000879config LOWMEM_SIZE_BOOL
880 bool "Set maximum low memory"
881 depends on ADVANCED_OPTIONS
882 help
883 This option allows you to set the maximum amount of memory which
884 will be used as "low memory", that is, memory which the kernel can
885 access directly, without having to set up a kernel virtual mapping.
886 This can be useful in optimizing the layout of kernel virtual
887 memory.
888
889 Say N here unless you know what you are doing.
890
891config LOWMEM_SIZE
892 hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
893 default "0x30000000"
894
Trent Piepho96051462008-12-08 19:34:58 -0800895config LOWMEM_CAM_NUM_BOOL
896 bool "Set number of CAMs to use to map low memory"
897 depends on ADVANCED_OPTIONS && FSL_BOOKE
898 help
899 This option allows you to set the maximum number of CAM slots that
900 will be used to map low memory. There are a limited number of slots
901 available and even more limited number that will fit in the L1 MMU.
902 However, using more entries will allow mapping more low memory. This
903 can be useful in optimizing the layout of kernel virtual memory.
904
905 Say N here unless you know what you are doing.
906
907config LOWMEM_CAM_NUM
Josh Boyer9b71dbd2009-03-31 08:05:50 -0400908 depends on FSL_BOOKE
Trent Piepho96051462008-12-08 19:34:58 -0800909 int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL
910 default 3
911
Suzuki Poulose0f890c82011-12-14 22:57:15 +0000912config DYNAMIC_MEMSTART
Kees Cook642e56f2013-01-16 18:53:25 -0800913 bool "Enable page aligned dynamic load address for kernel"
914 depends on ADVANCED_OPTIONS && FLATMEM && (FSL_BOOKE || 44x)
Suzuki Poulose0f890c82011-12-14 22:57:15 +0000915 select NONSTATIC_KERNEL
Kumar Gala37dd2ba2008-04-22 04:22:34 +1000916 help
Suzuki Poulose0f890c82011-12-14 22:57:15 +0000917 This option enables the kernel to be loaded at any page aligned
918 physical address. The kernel creates a mapping from KERNELBASE to
919 the address where the kernel is loaded. The page size here implies
920 the TLB page size of the mapping for kernel on the particular platform.
921 Please refer to the init code for finding the TLB page size.
Kumar Gala37dd2ba2008-04-22 04:22:34 +1000922
Suzuki Poulose0f890c82011-12-14 22:57:15 +0000923 DYNAMIC_MEMSTART is an easy way of implementing pseudo-RELOCATABLE
924 kernel image, where the only restriction is the page aligned kernel
925 load address. When this option is enabled, the compile time physical
926 address CONFIG_PHYSICAL_START is ignored.
Kumar Gala37dd2ba2008-04-22 04:22:34 +1000927
Suzuki Poulose9c5f7d32011-12-14 22:58:12 +0000928 This option is overridden by CONFIG_RELOCATABLE
929
Kumar Gala37dd2ba2008-04-22 04:22:34 +1000930config RELOCATABLE
Kees Cook642e56f2013-01-16 18:53:25 -0800931 bool "Build a relocatable kernel"
Kevin Haodd189692013-12-24 15:12:06 +0800932 depends on ADVANCED_OPTIONS && FLATMEM && (44x || FSL_BOOKE)
Suzuki Poulose9c5f7d32011-12-14 22:58:12 +0000933 select NONSTATIC_KERNEL
Kumar Gala37dd2ba2008-04-22 04:22:34 +1000934 help
935 This builds a kernel image that is capable of running at the
Suzuki Poulose9c5f7d32011-12-14 22:58:12 +0000936 location the kernel is loaded at, without any alignment restrictions.
937 This feature is a superset of DYNAMIC_MEMSTART and hence overrides it.
Kumar Gala37dd2ba2008-04-22 04:22:34 +1000938
939 One use is for the kexec on panic case where the recovery kernel
940 must live at a different physical address than the primary
941 kernel.
942
943 Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address
944 it has been loaded at and the compile time physical addresses
945 CONFIG_PHYSICAL_START is ignored. However CONFIG_PHYSICAL_START
946 setting can still be useful to bootwrappers that need to know the
Suzuki Poulose9c5f7d32011-12-14 22:58:12 +0000947 load address of the kernel (eg. u-boot/mkimage).
948
949config RELOCATABLE_PPC32
950 def_bool y
951 depends on PPC32 && RELOCATABLE
Kumar Gala37dd2ba2008-04-22 04:22:34 +1000952
953config PAGE_OFFSET_BOOL
954 bool "Set custom page offset address"
955 depends on ADVANCED_OPTIONS
956 help
957 This option allows you to set the kernel virtual address at which
958 the kernel will map low memory. This can be useful in optimizing
959 the virtual memory layout of the system.
960
961 Say N here unless you know what you are doing.
962
963config PAGE_OFFSET
964 hex "Virtual address of memory base" if PAGE_OFFSET_BOOL
965 default "0xc0000000"
966
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000967config KERNEL_START_BOOL
968 bool "Set custom kernel base address"
969 depends on ADVANCED_OPTIONS
970 help
971 This option allows you to set the kernel virtual address at which
Kumar Gala37dd2ba2008-04-22 04:22:34 +1000972 the kernel will be loaded. Normally this should match PAGE_OFFSET
973 however there are times (like kdump) that one might not want them
974 to be the same.
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000975
976 Say N here unless you know what you are doing.
977
978config KERNEL_START
979 hex "Virtual address of kernel base" if KERNEL_START_BOOL
Kumar Gala37dd2ba2008-04-22 04:22:34 +1000980 default PAGE_OFFSET if PAGE_OFFSET_BOOL
Suzuki Poulose0f890c82011-12-14 22:57:15 +0000981 default "0xc2000000" if CRASH_DUMP && !NONSTATIC_KERNEL
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000982 default "0xc0000000"
983
Kumar Gala37dd2ba2008-04-22 04:22:34 +1000984config PHYSICAL_START_BOOL
985 bool "Set physical address where the kernel is loaded"
986 depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE
987 help
988 This gives the physical address where the kernel is loaded.
989
990 Say N here unless you know what you are doing.
991
992config PHYSICAL_START
993 hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL
Suzuki Poulose0f890c82011-12-14 22:57:15 +0000994 default "0x02000000" if PPC_STD_MMU && CRASH_DUMP && !NONSTATIC_KERNEL
Kumar Gala37dd2ba2008-04-22 04:22:34 +1000995 default "0x00000000"
996
997config PHYSICAL_ALIGN
998 hex
Trent Piephoc8f35702008-12-08 19:34:59 -0800999 default "0x04000000" if FSL_BOOKE
Kumar Gala37dd2ba2008-04-22 04:22:34 +10001000 help
1001 This value puts the alignment restrictions on physical address
1002 where kernel is loaded and run from. Kernel is compiled for an
1003 address which meets above alignment restriction.
1004
Paul Mackerras14cf11a2005-09-26 16:04:21 +10001005config TASK_SIZE_BOOL
1006 bool "Set custom user task size"
1007 depends on ADVANCED_OPTIONS
1008 help
1009 This option allows you to set the amount of virtual address space
1010 allocated to user tasks. This can be useful in optimizing the
1011 virtual memory layout of the system.
1012
1013 Say N here unless you know what you are doing.
1014
1015config TASK_SIZE
1016 hex "Size of user task space" if TASK_SIZE_BOOL
Paul Bolle933ee712013-03-27 00:47:03 +00001017 default "0x80000000" if PPC_8xx
Kumar Gala4d9e55102007-10-11 13:40:21 -05001018 default "0xc0000000"
Paul Mackerras14cf11a2005-09-26 16:04:21 +10001019
Benjamin Herrenschmidt84532a02009-05-27 13:33:14 +10001020config CONSISTENT_SIZE_BOOL
1021 bool "Set custom consistent memory pool size"
1022 depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
1023 help
1024 This option allows you to set the size of the
1025 consistent memory pool. This pool of virtual memory
1026 is used to make consistent memory allocations.
1027
1028config CONSISTENT_SIZE
1029 hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
1030 default "0x00200000" if NOT_COHERENT_CACHE
1031
Paul Mackerras14cf11a2005-09-26 16:04:21 +10001032config PIN_TLB
1033 bool "Pinned Kernel TLBs (860 ONLY)"
1034 depends on ADVANCED_OPTIONS && 8xx
1035endmenu
1036
Stephen Rothwellcabb5582005-09-30 16:16:52 +10001037if PPC64
Paul Mackerras549e8152008-08-30 11:43:47 +10001038config RELOCATABLE
1039 bool "Build a relocatable kernel"
Guenter Roeckfb43e842014-06-30 11:45:30 -07001040 depends on !COMPILE_TEST
Suzuki Poulose0f890c82011-12-14 22:57:15 +00001041 select NONSTATIC_KERNEL
Paul Mackerras549e8152008-08-30 11:43:47 +10001042 help
1043 This builds a kernel image that is capable of running anywhere
1044 in the RMA (real memory area) at any 16k-aligned base address.
1045 The kernel is linked as a position-independent executable (PIE)
1046 and contains dynamic relocations which are processed early
1047 in the bootup process.
1048
1049 One use is for the kexec on panic case where the recovery kernel
1050 must live at a different physical address than the primary
1051 kernel.
1052
Paul Mackerrasbdbc29c2013-08-27 16:07:49 +10001053# This value must have zeroes in the bottom 60 bits otherwise lots will break
Kumar Gala37dd2ba2008-04-22 04:22:34 +10001054config PAGE_OFFSET
Stephen Rothwellcabb5582005-09-30 16:16:52 +10001055 hex
Stephen Rothwelleeb2d212005-09-30 17:24:15 +10001056 default "0xc000000000000000"
Kumar Gala37dd2ba2008-04-22 04:22:34 +10001057config KERNEL_START
1058 hex
Kumar Gala37dd2ba2008-04-22 04:22:34 +10001059 default "0xc000000000000000"
1060config PHYSICAL_START
1061 hex
Kumar Gala37dd2ba2008-04-22 04:22:34 +10001062 default "0x00000000"
Stephen Rothwellcabb5582005-09-30 16:16:52 +10001063endif
1064
Michael Ellermana4da0d52013-10-11 14:07:57 +11001065config ARCH_RANDOM
1066 def_bool n
1067
Paul Mackerras14cf11a2005-09-26 16:04:21 +10001068source "net/Kconfig"
1069
1070source "drivers/Kconfig"
1071
1072source "fs/Kconfig"
1073
Li Yang98658532006-10-03 23:10:46 -05001074source "arch/powerpc/sysdev/qe_lib/Kconfig"
1075
Paul Mackerras14cf11a2005-09-26 16:04:21 +10001076source "lib/Kconfig"
1077
Paul Mackerras14cf11a2005-09-26 16:04:21 +10001078source "arch/powerpc/Kconfig.debug"
1079
1080source "security/Kconfig"
1081
1082config KEYS_COMPAT
1083 bool
1084 depends on COMPAT && KEYS
1085 default y
1086
1087source "crypto/Kconfig"
Domen Puncer6f668282007-09-21 00:00:11 +10001088
Sylvain Munaut1088a202007-09-16 20:53:25 +10001089config PPC_LIB_RHEAP
1090 bool
1091
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -05001092source "arch/powerpc/kvm/Kconfig"