blob: 421df5cc6d18a46f000ab05d9d7c2fc20d8b231a [file] [log] [blame]
Arnd Bergmanna0ae9c72007-06-13 02:30:17 +10001source "arch/powerpc/platforms/Kconfig.cputype"
Johannes Berg17e638b2007-03-19 11:53:53 +01002
Paul Mackerras14cf11a2005-09-26 16:04:21 +10003config PPC32
4 bool
5 default y if !PPC64
6
kerstin jonsson234a71a2010-10-22 00:17:55 +00007config 32BIT
8 bool
9 default y if PPC32
10
Paul Mackerras14cf11a2005-09-26 16:04:21 +100011config 64BIT
12 bool
13 default y if PPC64
14
Stephen Rothwell2578bfa2007-09-21 10:16:20 +100015config WORD_SIZE
16 int
17 default 64 if PPC64
18 default 32 if !PPC64
19
Jeremy Fitzhardinge600715d2008-09-11 01:31:45 -070020config ARCH_PHYS_ADDR_T_64BIT
21 def_bool PPC64 || PHYS_64BIT
22
FUJITA Tomonori787d44c2010-10-01 11:12:54 +000023config ARCH_DMA_ADDR_T_64BIT
24 def_bool ARCH_PHYS_ADDR_T_64BIT
25
Paul Mackerras14cf11a2005-09-26 16:04:21 +100026config MMU
27 bool
28 default y
29
Tejun Heoc2a7e812009-08-14 15:00:53 +090030config HAVE_SETUP_PER_CPU_AREA
Tejun Heoe74e3962009-03-30 19:07:44 +090031 def_bool PPC64
32
Tejun Heoc2a7e812009-08-14 15:00:53 +090033config NEED_PER_CPU_EMBED_FIRST_CHUNK
travis@sgi.comb32ef632008-01-30 13:32:51 +010034 def_bool PPC64
35
Michael Ellerman551b81f2009-10-13 19:44:44 +000036config NR_IRQS
37 int "Number of virtual interrupt numbers"
Anton Blanchard859aefc2010-01-31 01:14:03 +000038 range 32 32768
Michael Ellerman551b81f2009-10-13 19:44:44 +000039 default "512"
40 help
41 This defines the number of virtual interrupt numbers the kernel
42 can manage. Virtual interrupt numbers are what you see in
43 /proc/interrupts. If you configure your system to have too few,
44 drivers will fail to load or worse - handle with care.
45
Christoph Hellwigfd3e0bb2008-04-17 14:35:00 +100046config STACKTRACE_SUPPORT
47 bool
48 default y
49
Arnd Bergmann01f4b8b2008-07-11 00:08:18 +100050config HAVE_LATENCYTOP_SUPPORT
51 def_bool y
52
Benjamin Herrenschmidt945feb12008-04-17 14:35:01 +100053config TRACE_IRQFLAGS_SUPPORT
54 bool
Benjamin Herrenschmidt945feb12008-04-17 14:35:01 +100055 default y
56
57config LOCKDEP_SUPPORT
58 bool
59 default y
60
Paul Mackerras14cf11a2005-09-26 16:04:21 +100061config RWSEM_GENERIC_SPINLOCK
62 bool
63
64config RWSEM_XCHGADD_ALGORITHM
65 bool
66 default y
67
Nick Piggin95c354f2008-01-30 13:31:20 +010068config GENERIC_LOCKBREAK
69 bool
70 default y
71 depends on SMP && PREEMPT
72
David Howellsf0d1b0b2006-12-08 02:37:49 -080073config ARCH_HAS_ILOG2_U32
74 bool
David Howellsef55d532006-12-08 02:37:53 -080075 default y
David Howellsf0d1b0b2006-12-08 02:37:49 -080076
77config ARCH_HAS_ILOG2_U64
78 bool
David Howellsef55d532006-12-08 02:37:53 -080079 default y if 64BIT
David Howellsf0d1b0b2006-12-08 02:37:49 -080080
Akinobu Mitae779b2f2006-03-26 01:39:33 -080081config GENERIC_HWEIGHT
82 bool
83 default y
84
Paul Mackerras14cf11a2005-09-26 16:04:21 +100085config PPC
86 bool
87 default y
Mark Salterb7e7c372013-10-07 22:15:32 -040088 select ARCH_MIGHT_HAVE_PC_PARPORT
Mark Salterc74e6d32014-01-01 11:32:26 -080089 select ARCH_MIGHT_HAVE_PC_SERIO
Stephen Rothwelld812c0e12013-03-06 18:11:51 +000090 select BINFMT_ELF
Vineeth Vijayan59994fb2014-11-14 14:42:05 +053091 select ARCH_BINFMT_ELF_RANDOMIZE_PIE
Stephen Rothwell10f85f42010-06-29 12:43:34 +100092 select OF
Stephen Neuendorffere6ce1322010-11-18 15:54:56 -080093 select OF_EARLY_FLATTREE
Marek Szyprowski708b7ee2014-02-28 14:42:56 +010094 select OF_RESERVED_MEM
Steven Rostedt2b79d692009-01-06 18:49:17 +000095 select HAVE_FTRACE_MCOUNT_RECORD
96 select HAVE_DYNAMIC_FTRACE
Steven Rostedt606576c2008-10-06 19:06:12 -040097 select HAVE_FUNCTION_TRACER
Steven Rostedt60ce8f72009-02-11 20:06:43 -050098 select HAVE_FUNCTION_GRAPH_TRACER
Catalin Marinas7ac57a82012-10-08 16:28:16 -070099 select SYSCTL_EXCEPTION_TRACE
Michael Buesch7444a722008-07-25 01:46:11 -0700100 select ARCH_WANT_OPTIONAL_GPIOLIB
Stephen Rothwell4febd952013-03-07 15:48:16 +1100101 select VIRT_TO_BUS if !PPC64
Sam Ravnborgec7748b2008-02-09 10:46:40 +0100102 select HAVE_IDE
Benjamin Herrenschmidta1f242f2008-07-23 21:27:08 -0700103 select HAVE_IOREMAP_PROT
Anton Blanchard0b5e6662013-09-23 12:05:12 +1000104 select HAVE_EFFICIENT_UNALIGNED_ACCESS if !CPU_LITTLE_ENDIAN
Mathieu Desnoyers3f550092008-02-02 15:10:35 -0500105 select HAVE_KPROBES
Jason Wessel17ce4522008-07-23 11:30:15 -0500106 select HAVE_ARCH_KGDB
Ananth N Mavinakayanahalli9edddaa2008-03-04 14:28:37 -0800107 select HAVE_KRETPROBES
Roland McGrathdec2b0d2008-07-27 16:53:20 +1000108 select HAVE_ARCH_TRACEHOOK
Yinghai Lu95f72d12010-07-12 14:36:09 +1000109 select HAVE_MEMBLOCK
Tejun Heo1d7cfe12011-12-08 10:22:08 -0800110 select HAVE_MEMBLOCK_NODE_MAP
FUJITA Tomonori46bab4e2009-08-04 19:08:26 +0000111 select HAVE_DMA_ATTRS
FUJITA Tomonori80d3e8a2009-08-04 19:08:28 +0000112 select HAVE_DMA_API_DEBUG
Steven Rostedt4e491d12008-05-14 23:49:44 -0400113 select HAVE_OPROFILE
Catalin Marinasb69ec422012-10-08 16:28:11 -0700114 select HAVE_DEBUG_KMEMLEAK
Laura Abbott308c09f2014-08-08 14:23:25 -0700115 select ARCH_HAS_SG_CHAIN
Paul Mackerrasc2e95c62009-06-12 21:10:41 +0000116 select GENERIC_ATOMIC64 if PPC32
Catalin Marinas74634492012-07-30 14:41:09 -0700117 select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
Ingo Molnarcdd6c482009-09-21 12:02:48 +0200118 select HAVE_PERF_EVENTS
Mahesh Salgaonkar359e4282010-04-07 18:10:20 +1000119 select HAVE_REGS_AND_STACK_ACCESS_API
K.Prasad5aae8a52010-06-15 11:35:19 +0530120 select HAVE_HW_BREAKPOINT if PERF_EVENTS && PPC_BOOK3S_64
Will Deaconc1d7e012012-07-30 14:42:46 -0700121 select ARCH_WANT_IPC_PARSE_VERSION
Grant Likelyad5b7f132012-01-30 08:02:19 +0000122 select SPARSE_IRQ
Grant Likelycc79ca62012-02-16 01:37:49 -0700123 select IRQ_DOMAIN
Thomas Gleixner433c9c62011-03-25 17:04:59 +0100124 select GENERIC_IRQ_SHOW
125 select GENERIC_IRQ_SHOW_LEVEL
Thomas Gleixnere8d2c472011-10-05 02:30:51 +0000126 select IRQ_FORCED_THREADING
Peter Zijlstra26723912011-05-24 17:12:00 -0700127 select HAVE_RCU_TABLE_FREE if SMP
Ian Munsie02424d82011-02-02 17:27:24 +0000128 select HAVE_SYSCALL_TRACEPOINTS
Sam Ravnborge47b65b2012-05-21 20:45:37 +0200129 select HAVE_BPF_JIT if PPC64
Michael Ellermanac5f89c2011-06-29 19:16:59 +0000130 select HAVE_ARCH_JUMP_LABEL
Huang Yingdf013ff2011-07-13 13:14:22 +0800131 select ARCH_HAVE_NMI_SAFE_CMPXCHG
Thomas Gleixner17e32ea2012-04-20 13:05:48 +0000132 select GENERIC_SMP_IDLE_THREAD
Anna-Maria Gleixnerb9ed27d2012-05-18 16:45:51 +0000133 select GENERIC_CMOS_UPDATE
John Stultz70639422012-09-04 15:34:21 -0400134 select GENERIC_TIME_VSYSCALL_OLD
Anna-Maria Gleixnerb9ed27d2012-05-18 16:45:51 +0000135 select GENERIC_CLOCKEVENTS
Preeti U Murthy0d948732014-02-26 05:39:06 +0530136 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
137 select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
Paul Mackerras16293722012-05-28 13:03:47 +1000138 select GENERIC_STRNCPY_FROM_USER
139 select GENERIC_STRNLEN_USER
David Howells786d35d2012-09-28 14:31:03 +0930140 select HAVE_MOD_ARCH_SPECIFIC
141 select MODULES_USE_ELF_RELA
Al Viro0bcfe542012-10-26 23:08:25 -0400142 select CLONE_BACKWARDS
David Woodhousefe3955c2012-12-19 15:14:17 +0000143 select ARCH_USE_BUILTIN_BSWAP
Al Viro0980cae2012-12-25 16:23:09 -0500144 select OLD_SIGSUSPEND
Al Viro09a4d5d2012-12-25 19:27:42 -0500145 select OLD_SIGACTION if PPC32
Dave Hansend1a1dc02013-07-01 13:04:42 -0700146 select HAVE_DEBUG_STACKOVERFLOW
Frederic Weisbecker62d26c82013-09-24 17:18:36 +0200147 select HAVE_IRQ_EXIT_ON_IRQ_STACK
Michael Ellerman3405d232014-01-15 18:14:28 +1100148 select ARCH_USE_CMPXCHG_LOCKREF if PPC64
AKASHI Takahiro7a017722014-02-25 18:16:24 +0900149 select HAVE_ARCH_AUDITSYSCALL
Peter Zijlstra4badad32014-06-06 19:53:16 +0200150 select ARCH_SUPPORTS_ATOMIC_RMW
Anton Blancharda75c3802014-09-19 09:40:21 +1000151 select DCACHE_WORD_ACCESS if PPC64 && CPU_LITTLE_ENDIAN
Anton Blanchard10239732014-09-17 22:15:33 +1000152 select NO_BOOTMEM
Aneesh Kumar K.Vb30e7592014-11-05 21:57:41 +0530153 select HAVE_GENERIC_RCU_GUP
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000154
Anton Blanchard7a332b02013-09-23 12:04:51 +1000155config GENERIC_CSUM
156 def_bool CPU_LITTLE_ENDIAN
157
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000158config EARLY_PRINTK
159 bool
Benjamin Herrenschmidt51d30822005-11-23 17:57:25 +1100160 default y
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000161
Jason Baronb71d47c2013-11-25 23:23:11 +0000162config PANIC_TIMEOUT
163 int
164 default 180
165
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000166config COMPAT
167 bool
168 default y if PPC64
Roland McGrath01e31db2008-01-02 17:03:11 -0800169 select COMPAT_BINFMT_ELF
Chris Metcalf48b25c42012-03-15 13:13:38 -0400170 select ARCH_WANT_OLD_COMPAT_IPC
Al Viro09a4d5d2012-12-25 19:27:42 -0500171 select COMPAT_OLD_SIGACTION
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000172
173config SYSVIPC_COMPAT
174 bool
175 depends on COMPAT && SYSVIPC
176 default y
177
178# All PPC32s use generic nvram driver through ppc_md
179config GENERIC_NVRAM
180 bool
181 default y if PPC32
182
Ingo Molnarae1e9132008-11-11 09:05:16 +0100183config SCHED_OMIT_FRAME_POINTER
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000184 bool
185 default y
186
187config ARCH_MAY_HAVE_PC_FDC
188 bool
Pranith Kumar3484a312014-08-18 17:13:41 -0400189 default PCI
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000190
Kumar Gala08264cb2006-01-10 21:43:56 -0600191config PPC_OF
192 def_bool y
193
194config PPC_UDBG_16550
195 bool
196 default n
197
Kumar Gala08264cb2006-01-10 21:43:56 -0600198config GENERIC_TBSYNC
199 bool
200 default y if PPC32 && SMP
201 default n
202
Al Viroe65e1fc2006-09-12 03:04:40 -0400203config AUDIT_ARCH
204 bool
205 default y
206
Jeremy Fitzhardinge73c9cea2006-12-08 03:30:41 -0800207config GENERIC_BUG
208 bool
209 default y
210 depends on BUG
211
Johannes Bergb3028872007-03-20 05:18:02 +1100212config SYS_SUPPORTS_APM_EMULATION
Kumar Gala58da10b2007-05-23 09:51:46 -0500213 default y if PMAC_APM_EMU
Johannes Bergb3028872007-03-20 05:18:02 +1100214 bool
215
David Gibson6c5b59b2011-04-14 18:29:16 +0000216config EPAPR_BOOT
217 bool
218 help
219 Used to allow a board to specify it wants an ePAPR compliant wrapper.
220 default n
221
Kumar Galaf4fc4a52006-01-16 10:53:22 -0600222config DEFAULT_UIMAGE
223 bool
224 help
225 Used to allow a board to specify it wants a uImage built by default
226 default n
227
Johannes Berg801e4062007-12-08 02:12:39 +0100228config ARCH_HIBERNATION_POSSIBLE
229 bool
Johannes Berg543b9fd2007-05-03 22:31:38 +1000230 default y
231
Johannes Bergf4cb5702007-12-08 02:14:00 +0100232config ARCH_SUSPEND_POSSIBLE
233 def_bool y
Anton Vorontsov4ffd6952009-09-16 01:43:57 +0400234 depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx || \
Zhao Chenhuid0832a72012-07-20 20:42:36 +0800235 (PPC_85xx && !PPC_E500MC) || PPC_86xx || PPC_PSERIES \
236 || 44x || 40x
Johannes Bergf4cb5702007-12-08 02:14:00 +0100237
Benjamin Herrenschmidt4c75a6f2006-11-11 17:24:53 +1100238config PPC_DCR_NATIVE
239 bool
240 default n
241
242config PPC_DCR_MMIO
243 bool
244 default n
245
246config PPC_DCR
247 bool
248 depends on PPC_DCR_NATIVE || PPC_DCR_MMIO
249 default y
250
Benjamin Herrenschmidt4c9d2802006-11-11 17:25:08 +1100251config PPC_OF_PLATFORM_PCI
252 bool
Stephen Rothwell373a6da2007-12-21 15:37:07 +1100253 depends on PCI
Benjamin Herrenschmidt4c9d2802006-11-11 17:25:08 +1100254 depends on PPC64 # not supported on 32 bits yet
255 default n
256
Akinobu Mita6a11f752009-03-31 15:23:17 -0700257config ARCH_SUPPORTS_DEBUG_PAGEALLOC
258 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
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000298source "init/Kconfig"
299
Matt Helsleydc52ddc2008-10-18 20:27:21 -0700300source "kernel/Kconfig.freezer"
301
Benjamin Herrenschmidta2d2e1e2007-12-21 15:39:24 +1100302source "arch/powerpc/sysdev/Kconfig"
Kumar Gala4330f5d2007-03-16 09:32:17 -0500303source "arch/powerpc/platforms/Kconfig"
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000304
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000305menu "Kernel options"
306
307config HIGHMEM
308 bool "High memory support"
309 depends on PPC32
310
311source kernel/Kconfig.hz
312source kernel/Kconfig.preempt
313source "fs/Kconfig.binfmt"
314
Mel Gormanba72cb82007-11-28 16:21:13 -0800315config HUGETLB_PAGE_SIZE_VARIABLE
316 bool
317 depends on HUGETLB_PAGE
318 default y
319
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000320config MATH_EMULATION
321 bool "Math emulation"
Benjamin Herrenschmidt4e63f8e2013-06-09 17:01:24 +1000322 depends on 4xx || 8xx || PPC_MPC832x || BOOKE
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000323 ---help---
324 Some PowerPC chips designed for embedded applications do not have
325 a floating-point unit and therefore do not implement the
326 floating-point instructions in the PowerPC instruction set. If you
327 say Y here, the kernel will include code to emulate a floating-point
328 unit, which will allow programs that use floating-point
329 instructions to run.
330
Benjamin Herrenschmidt4e63f8e2013-06-09 17:01:24 +1000331 This is also useful to emulate missing (optional) instructions
332 such as fsqrt on cores that do have an FPU but do not implement
333 them (such as Freescale BookE).
334
Kevin Haoe05c0e82013-07-16 19:57:15 +0800335choice
336 prompt "Math emulation options"
337 default MATH_EMULATION_FULL
338 depends on MATH_EMULATION
339
340config MATH_EMULATION_FULL
341 bool "Emulate all the floating point instructions"
342 ---help---
343 Select this option will enable the kernel to support to emulate
344 all the floating point instructions. If your SoC doesn't have
345 a FPU, you should select this.
346
347config MATH_EMULATION_HW_UNIMPLEMENTED
348 bool "Just emulate the FPU unimplemented instructions"
349 ---help---
350 Select this if you know there does have a hardware FPU on your
351 SoC, but some floating point instructions are not implemented by that.
352
353endchoice
354
Michael Neuling3d72bbc2013-02-13 16:21:43 +0000355config PPC_TRANSACTIONAL_MEM
356 bool "Transactional Memory support for POWERPC"
357 depends on PPC_BOOK3S_64
358 depends on SMP
Michael Neuling7b37a122014-01-08 21:25:31 +1100359 select ALTIVEC
360 select VSX
Michael Neuling3d72bbc2013-02-13 16:21:43 +0000361 default n
362 ---help---
363 Support user-mode Transactional Memory on POWERPC.
364
FUJITA Tomonorifb3475e2008-02-04 22:28:08 -0800365config IOMMU_HELPER
366 def_bool PPC64
367
Becky Bruceec3cf2e2009-05-14 12:42:28 +0000368config SWIOTLB
369 bool "SWIOTLB support"
370 default n
371 select IOMMU_HELPER
372 ---help---
373 Support for IO bounce buffering for systems without an IOMMU.
374 This allows us to DMA to the full physical address space on
375 platforms where the size of a physical address is larger
376 than the bus address. Not all platforms support this.
377
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000378config HOTPLUG_CPU
379 bool "Support for enabling/disabling CPUs"
Stephen Rothwell40b31362013-05-21 13:49:35 +1000380 depends on SMP && (PPC_PSERIES || \
Zhao Chenhuid0832a72012-07-20 20:42:36 +0800381 PPC_PMAC || PPC_POWERNV || (PPC_85xx && !PPC_E500MC))
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000382 ---help---
383 Say Y here to be able to disable and re-enable individual
384 CPUs at runtime on SMP machines.
385
386 Say N if you are unsure.
387
Nathan Fontenot12633e82009-11-25 17:23:25 +0000388config ARCH_CPU_PROBE_RELEASE
389 def_bool y
390 depends on HOTPLUG_CPU
391
Yasunori Gotocc576372006-06-29 02:24:27 -0700392config ARCH_ENABLE_MEMORY_HOTPLUG
393 def_bool y
394
Badari Pulavartya99824f2008-02-05 00:10:18 -0800395config ARCH_HAS_WALK_MEMORY
396 def_bool y
397
Badari Pulavarty14824712008-02-05 00:10:17 -0800398config ARCH_ENABLE_MEMORY_HOTREMOVE
399 def_bool y
400
Mahesh Salgaonkarf2296a32013-11-15 09:50:50 +0530401config PPC64_SUPPORTS_MEMORY_FAILURE
402 bool "Add support for memory hwpoison"
403 depends on PPC_BOOK3S_64
404 default "y" if PPC_POWERNV
405 select ARCH_SUPPORTS_MEMORY_FAILURE
406
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000407config KEXEC
Kees Cook642e56f2013-01-16 18:53:25 -0800408 bool "kexec system call"
409 depends on (PPC_BOOK3S || FSL_BOOKE || (44x && !SMP))
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000410 help
411 kexec is a system call that implements the ability to shutdown your
412 current kernel, and to start another kernel. It is like a reboot
Matt LaPlante1f1332f2006-06-29 01:32:47 -0400413 but it is independent of the system firmware. And like a reboot
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000414 you can start any kernel with it, not just Linux.
415
Matt LaPlante1f1332f2006-06-29 01:32:47 -0400416 The name comes from the similarity to the exec system call.
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000417
418 It is an ongoing process to be certain the hardware in a machine
419 is properly shutdown, so do not be surprised if this code does not
Geert Uytterhoevenbf220692013-08-20 21:38:03 +0200420 initially work for you. As of this writing the exact hardware
421 interface is strongly in flux, so no good recommendation can be
422 made.
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000423
Haren Mynenie8625d462006-01-14 13:48:25 -0800424config CRASH_DUMP
Bernhard Walle3420b5d2008-06-27 03:02:15 +1000425 bool "Build a kdump crash kernel"
Suzuki Poulose47da4212012-04-15 22:27:35 +0000426 depends on PPC64 || 6xx || FSL_BOOKE || (44x && !SMP)
Guenter Roeckfb43e842014-06-30 11:45:30 -0700427 select RELOCATABLE if (PPC64 && !COMPILE_TEST) || 44x || FSL_BOOKE
Haren Mynenie8625d462006-01-14 13:48:25 -0800428 help
429 Build a kernel suitable for use as a kdump capture kernel.
Mohan Kumar M54622f12008-10-21 17:38:10 +0000430 The same kernel binary can be used as production kernel and dump
431 capture kernel.
Haren Mynenie8625d462006-01-14 13:48:25 -0800432
Mahesh Salgaonkareb39c882012-02-16 01:14:22 +0000433config FA_DUMP
434 bool "Firmware-assisted dump"
Michael Ellerman90890b12013-10-28 15:00:35 +1100435 depends on PPC64 && PPC_RTAS && CRASH_DUMP && KEXEC
Manish Ahuja242f2712008-03-22 10:50:50 +1100436 help
Mahesh Salgaonkareb39c882012-02-16 01:14:22 +0000437 A robust mechanism to get reliable kernel crash dump with
438 assistance from firmware. This approach does not use kexec,
439 instead firmware assists in booting the kdump kernel
440 while preserving memory contents. Firmware-assisted dump
441 is meant to be a kdump replacement offering robustness and
442 speed not possible without system firmware assistance.
Manish Ahuja242f2712008-03-22 10:50:50 +1100443
444 If unsure, say "N"
445
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000446config IRQ_ALL_CPUS
447 bool "Distribute interrupts on all CPUs by default"
Paul Bolle6cf09b92013-05-15 11:21:01 +0200448 depends on SMP
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000449 help
450 This option gives the kernel permission to distribute IRQs across
451 multiple CPUs. Saying N here will route all IRQs to the first
452 CPU. Generally saying Y is safe, although some problems have been
453 reported with SMP Power Macintoshes with this option enabled.
454
Andy Whitcroftffa27b62005-10-28 17:46:58 -0700455config NUMA
456 bool "NUMA support"
457 depends on PPC64
458 default y if SMP && PPC_PSERIES
459
Yasunori Gotoc80d79d2006-04-10 22:53:53 -0700460config NODES_SHIFT
461 int
Anton Blanchardea55bf22009-09-21 19:56:43 +0000462 default "8" if PPC64
Yasunori Gotoc80d79d2006-04-10 22:53:53 -0700463 default "4"
464 depends on NEED_MULTIPLE_NODES
465
Nishanth Aravamudan8c272262014-05-19 11:14:23 -0700466config USE_PERCPU_NUMA_NODE_ID
467 def_bool y
468 depends on NUMA
469
Nishanth Aravamudan64bb80d2014-05-16 16:41:20 -0700470config HAVE_MEMORYLESS_NODES
471 def_bool y
472 depends on NUMA
473
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000474config ARCH_SELECT_MEMORY_MODEL
475 def_bool y
476 depends on PPC64
477
478config ARCH_FLATMEM_ENABLE
Andy Whitcroft9100b202005-11-29 19:20:55 +0000479 def_bool y
480 depends on (PPC64 && !NUMA) || PPC32
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000481
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000482config ARCH_SPARSEMEM_ENABLE
483 def_bool y
Andy Whitcroft9100b202005-11-29 19:20:55 +0000484 depends on PPC64
Andy Whitcroftd29eff72007-10-16 01:24:17 -0700485 select SPARSEMEM_VMEMMAP_ENABLE
Anton Blanchard45fb6ce2005-11-11 14:22:35 +1100486
487config ARCH_SPARSEMEM_DEFAULT
488 def_bool y
Benjamin Herrenschmidt78bde532007-02-13 11:46:06 +1100489 depends on (SMP && PPC_PSERIES) || PPC_PS3
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000490
Benjamin Herrenschmidt5a1eb5c2009-10-30 15:03:54 +1100491config SYS_SUPPORTS_HUGETLBFS
Becky Bruce41151e72011-06-28 09:54:48 +0000492 bool
Benjamin Herrenschmidt5a1eb5c2009-10-30 15:03:54 +1100493
Mel Gormanc67c3cb2006-09-27 01:49:49 -0700494source "mm/Kconfig"
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000495
Mike Kravetz7e9191d2005-11-07 09:39:48 -0800496config ARCH_MEMORY_PROBE
497 def_bool y
498 depends on MEMORY_HOTPLUG
499
Andy Whitcroft75167952006-10-21 10:24:14 -0700500# Some NUMA nodes have memory ranges that span
501# other nodes. Even though a pfn is valid and
502# between a node's start and end pfns, it may not
503# reside on that node. See memmap_init_zone()
504# for details.
505config NODES_SPAN_OTHER_NODES
506 def_bool y
507 depends on NEED_MULTIPLE_NODES
508
Benjamin Herrenschmidt16c2d472007-05-08 16:27:28 +1000509config PPC_HAS_HASH_64K
510 bool
511 depends on PPC64
512 default n
513
Yuri Tikhonove1240122009-01-29 01:40:44 +0000514config STDBINUTILS
515 bool "Using standard binutils settings"
516 depends on 44x
517 default y
518 help
519 Turning this option off allows you to select 256KB PAGE_SIZE on 44x.
520 Note, that kernel will be able to run only those applications,
521 which had been compiled using binutils later than 2.17.50.0.3 with
522 '-zmax-page-size' set to 256K (the default is 64K). Or, if using
523 the older binutils, you can patch them with a trivial patch, which
524 changes the ELF_MAXPAGESIZE definition from 0x10000 to 0x40000.
525
Ilya Yanokca9153a2008-12-11 04:55:41 +0300526choice
527 prompt "Page size"
528 default PPC_4K_PAGES
Benjamin Herrenschmidt3c726f82005-11-07 11:06:55 +1100529 help
Ilya Yanokca9153a2008-12-11 04:55:41 +0300530 Select the kernel logical page size. Increasing the page size
531 will reduce software overhead at each page boundary, allow
532 hardware prefetch mechanisms to be more effective, and allow
533 larger dma transfers increasing IO efficiency and reducing
534 overhead. However the utilization of memory will increase.
535 For example, each cached file will using a multiple of the
536 page size to hold its contents and the difference between the
537 end of file and the end of page is wasted.
538
539 Some dedicated systems, such as software raid serving with
540 accelerated calculations, have shown significant increases.
541
542 If you configure a 64 bit kernel for 64k pages but the
543 processor does not support them, then the kernel will simulate
544 them with 4k pages, loading them on demand, but with the
545 reduced software overhead and larger internal fragmentation.
546 For the 32 bit kernel, a large page option will not be offered
547 unless it is supported by the configured processor.
548
549 If unsure, choose 4K_PAGES.
550
551config PPC_4K_PAGES
552 bool "4k page size"
553
554config PPC_16K_PAGES
555 bool "16k page size" if 44x
556
557config PPC_64K_PAGES
Benjamin Herrenschmidt2d27cfd2009-07-23 23:15:59 +0000558 bool "64k page size" if 44x || PPC_STD_MMU_64 || PPC_BOOK3E_64
Scott Wood9841c792014-01-17 18:36:38 -0600559 depends on !PPC_FSL_BOOK3E
Ilya Yanokca9153a2008-12-11 04:55:41 +0300560 select PPC_HAS_HASH_64K if PPC_STD_MMU_64
561
Yuri Tikhonove1240122009-01-29 01:40:44 +0000562config PPC_256K_PAGES
563 bool "256k page size" if 44x
Hugh Dickinsadf213c2009-04-06 11:01:15 +0000564 depends on !STDBINUTILS
Yuri Tikhonove1240122009-01-29 01:40:44 +0000565 help
566 Make the page size 256k.
567
568 As the ELF standard only requires alignment to support page
569 sizes up to 64k, you will need to compile all of your user
570 space applications with a non-standard binutils settings
571 (see the STDBINUTILS description for details).
572
573 Say N unless you know what you are doing.
574
Ilya Yanokca9153a2008-12-11 04:55:41 +0300575endchoice
Benjamin Herrenschmidt3c726f82005-11-07 11:06:55 +1100576
Stephen Rothwell53bcddb2008-04-11 11:11:56 +1000577config FORCE_MAX_ZONEORDER
578 int "Maximum zone order"
Benjamin Herrenschmidt066c4b82009-07-21 15:25:53 +0000579 range 9 64 if PPC64 && PPC_64K_PAGES
580 default "9" if PPC64 && PPC_64K_PAGES
581 range 13 64 if PPC64 && !PPC_64K_PAGES
582 default "13" if PPC64 && !PPC_64K_PAGES
583 range 9 64 if PPC32 && PPC_16K_PAGES
584 default "9" if PPC32 && PPC_16K_PAGES
585 range 7 64 if PPC32 && PPC_64K_PAGES
586 default "7" if PPC32 && PPC_64K_PAGES
587 range 5 64 if PPC32 && PPC_256K_PAGES
588 default "5" if PPC32 && PPC_256K_PAGES
Johannes Bergebe40c52008-09-24 04:29:08 +0000589 range 11 64
Stephen Rothwell53bcddb2008-04-11 11:11:56 +1000590 default "11"
591 help
592 The kernel memory allocator divides physically contiguous memory
593 blocks into "zones", where each zone is a power of two number of
594 pages. This option selects the largest power of two that the kernel
595 keeps in the memory allocator. If you need to allocate very large
596 blocks of physically contiguous memory, then you may need to
597 increase this value.
598
599 This config option is actually maximum order plus one. For example,
600 a value of 11 means that the largest free memory block is 2^10 pages.
601
602 The page size is not necessarily 4KB. For example, on 64-bit
603 systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES. Keep
604 this in mind when choosing a value for this option.
605
Paul Mackerrasfa282372008-01-24 08:35:13 +1100606config PPC_SUBPAGE_PROT
607 bool "Support setting protections for 4k subpages"
Ilya Yanokca9153a2008-12-11 04:55:41 +0300608 depends on PPC_STD_MMU_64 && PPC_64K_PAGES
Paul Mackerrasfa282372008-01-24 08:35:13 +1100609 help
610 This option adds support for a system call to allow user programs
611 to set access permissions (read/write, readonly, or no access)
612 on the 4k subpages of each 64k page.
613
Ian Munsiee83d0162014-10-08 19:54:50 +1100614config PPC_COPRO_BASE
615 bool
616 default n
617
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000618config SCHED_SMT
619 bool "SMT (Hyperthreading) scheduler support"
620 depends on PPC64 && SMP
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000621 help
622 SMT scheduler support improves the CPU scheduler's decision making
623 when dealing with POWER5 cpus at a cost of slightly increased
624 overhead in some places. If unsure say N here.
625
Michael Neulingb92a66a2012-09-10 00:35:26 +0000626config PPC_DENORMALISATION
627 bool "PowerPC denormalisation exception handling"
628 depends on PPC_BOOK3S_64
Anton Blanchard4e90a2a2013-07-31 16:31:26 +1000629 default "y" if PPC_POWERNV
Michael Neulingb92a66a2012-09-10 00:35:26 +0000630 ---help---
631 Add support for handling denormalisation of single precision
632 values. Useful for bare metal only. If unsure say Y here.
633
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000634config CMDLINE_BOOL
635 bool "Default bootloader kernel arguments"
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000636
637config CMDLINE
638 string "Initial kernel command string"
639 depends on CMDLINE_BOOL
640 default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
641 help
642 On some platforms, there is currently no way for the boot loader to
643 pass arguments to the kernel. For these platforms, you can supply
644 some command-line options at build time by entering them here. In
645 most cases you will need to specify the root device here.
646
Sebastian Siewioreb3b80f2014-02-20 21:48:17 +0100647config CMDLINE_FORCE
648 bool "Always use the default kernel command string"
649 depends on CMDLINE_BOOL
650 help
651 Always use the default kernel command string, even if the boot
652 loader passes other arguments to the kernel.
653 This is useful if you cannot or don't want to change the
654 command-line options your boot loader passes to the kernel.
655
Grant Likelyc356aa42008-07-09 09:41:52 -0600656config EXTRA_TARGETS
657 string "Additional default image types"
658 help
659 List additional targets to be built by the bootwrapper here (separated
660 by spaces). This is useful for targets that depend of device tree
661 files in the .dts directory.
662
663 Targets in this list will be build as part of the default build
664 target, or when the user does a 'make zImage' or a
665 'make zImage.initrd'.
666
667 If unsure, leave blank
668
Johannes Bergb28f5082008-01-15 23:17:00 -0500669config ARCH_WANTS_FREEZER_CONTROL
670 def_bool y
671 depends on ADB_PMU
672
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000673source kernel/power/Kconfig
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000674
675config SECCOMP
676 bool "Enable seccomp to safely compute untrusted bytecode"
677 depends on PROC_FS
678 default y
679 help
680 This kernel feature is useful for number crunching applications
681 that may need to compute untrusted bytecode during their
682 execution. By using pipes or other transports made available to
683 the process as file descriptors supporting the read/write
684 syscalls, it's possible to isolate those applications in
685 their own address space using seccomp. Once seccomp is
686 enabled via /proc/<pid>/seccomp, it cannot be disabled
687 and the task is only allowed to execute a few safe syscalls
688 defined by each seccomp mode.
689
690 If unsure, say Y. Only embedded should say N here.
691
692endmenu
693
694config ISA_DMA_API
695 bool
Stephen Rothwell3d066d72012-02-22 14:10:12 +0000696 default PCI
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000697
698menu "Bus options"
699
700config ISA
701 bool "Support for ISA-bus hardware"
Paul Bolle933ee712013-03-27 00:47:03 +0000702 depends on PPC_CHRP
Paul Mackerrasf9bd1702005-10-26 16:47:42 +1000703 select PPC_I8259
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000704 help
705 Find out whether you have ISA slots on your motherboard. ISA is the
706 name of a bus system, i.e. the way the CPU talks to the other stuff
707 inside your box. If you have an Apple machine, say N here; if you
Paul Bolle933ee712013-03-27 00:47:03 +0000708 have an IBM RS/6000 or pSeries machine, say Y. If you have an
709 embedded board, consult your board documentation.
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000710
Christoph Lameter5ac6da62007-02-10 01:43:14 -0800711config ZONE_DMA
712 bool
713 default y
714
FUJITA Tomonoriaf407c62010-03-10 15:23:27 -0800715config NEED_DMA_MAP_STATE
716 def_bool (PPC64 || NOT_COHERENT_CACHE)
717
FUJITA Tomonorie32205e2010-05-26 14:44:33 -0700718config NEED_SG_DMA_LENGTH
719 def_bool y
720
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000721config GENERIC_ISA_DMA
722 bool
Anton Vorontsov19274452010-07-15 07:38:16 +0000723 depends on ISA_DMA_API
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000724 default y
725
Paul Mackerras25635c72005-10-26 16:36:55 +1000726config PPC_INDIRECT_PCI
727 bool
728 depends on PCI
Becky Bruce63dafe52006-01-14 16:57:39 -0600729 default y if 40x || 44x
Paul Mackerras25635c72005-10-26 16:36:55 +1000730 default n
731
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000732config EISA
733 bool
734
735config SBUS
736 bool
737
Kumar Gala08264cb2006-01-10 21:43:56 -0600738config FSL_SOC
739 bool
740
Roy Zang55c44992007-07-10 18:44:34 +0800741config FSL_PCI
742 bool
743 select PPC_INDIRECT_PCI
Kumar Galad0839112009-01-28 13:25:29 -0600744 select PCI_QUIRKS
Roy Zang55c44992007-07-10 18:44:34 +0800745
Anton Vorontsov4ffd6952009-09-16 01:43:57 +0400746config FSL_PMC
747 bool
748 default y
749 depends on SUSPEND && (PPC_85xx || PPC_86xx)
750 help
751 Freescale MPC85xx/MPC86xx power management controller support
752 (suspend/resume). For MPC83xx see platforms/83xx/suspend.c
753
Victor Gallardod164f6d2010-10-08 10:25:27 +0000754config PPC4xx_CPM
755 bool
756 default y
757 depends on SUSPEND && (44x || 40x)
758 help
759 PPC4xx Clock Power Management (CPM) support (suspend/resume).
760 It also enables support for two different idle states (idle-wait
761 and idle-doze).
762
Stefan Roese2a706912008-03-26 22:39:50 +1100763config 4xx_SOC
764 bool
765
Anton Vorontsovacaa7aa2008-04-11 21:03:40 +0400766config FSL_LBC
Roy Zang3ab8f2a2010-10-18 15:22:31 +0800767 bool "Freescale Local Bus support"
768 depends on FSL_SOC
Anton Vorontsovacaa7aa2008-04-11 21:03:40 +0400769 help
Roy Zang3ab8f2a2010-10-18 15:22:31 +0800770 Enables reporting of errors from the Freescale local bus
771 controller. Also contains some common code used by
772 drivers for specific local bus peripherals.
Anton Vorontsovacaa7aa2008-04-11 21:03:40 +0400773
Anton Vorontsov83ff9dc2008-05-23 20:38:54 +0400774config FSL_GTM
775 bool
776 depends on PPC_83xx || QUICC_ENGINE || CPM2
777 help
778 Freescale General-purpose Timers support
779
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000780# Yes MCA RS/6000s exist but Linux-PPC does not currently support any
781config MCA
782 bool
783
John Rigbyb5005632008-06-26 11:07:56 -0600784# Platforms that what PCI turned unconditionally just do select PCI
785# in their config node. Platforms that want to choose at config
786# time should select PPC_PCI_CHOICE
787config PPC_PCI_CHOICE
788 bool
789
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000790config PCI
John Rigbyb5005632008-06-26 11:07:56 -0600791 bool "PCI support" if PPC_PCI_CHOICE
792 default y if !40x && !CPM2 && !8xx && !PPC_83xx \
Albert Herranzbcc48592009-12-12 06:31:39 +0000793 && !PPC_85xx && !PPC_86xx && !GAMECUBE_COMMON
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000794 default PCI_QSPAN if !4xx && !CPM2 && 8xx
Michael S. Tsirkin335b8cf2011-11-24 21:06:41 +0200795 select GENERIC_PCI_IOMAP
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000796 help
797 Find out whether your system includes a PCI bus. PCI is the name of
798 a bus system, i.e. the way the CPU talks to the other stuff inside
799 your box. If you say Y here, the kernel will include drivers and
800 infrastructure code to support PCI bus devices.
801
802config PCI_DOMAINS
Matthew Wilcox36e23592007-07-10 10:54:40 -0600803 def_bool PCI
804
805config PCI_SYSCALL
806 def_bool PCI
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000807
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000808config PCI_QSPAN
809 bool "QSpan PCI"
810 depends on !4xx && !CPM2 && 8xx
Paul Mackerrasf9bd1702005-10-26 16:47:42 +1000811 select PPC_I8259
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000812 help
813 Say Y here if you have a system based on a Motorola 8xx-series
814 embedded processor with a QSPAN PCI interface, otherwise say N.
815
816config PCI_8260
817 bool
818 depends on PCI && 8260
Paul Mackerras25635c72005-10-26 16:36:55 +1000819 select PPC_INDIRECT_PCI
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000820 default y
821
Jake Moilanenbb53bb32006-06-07 16:05:46 -0500822source "drivers/pci/pcie/Kconfig"
823
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000824source "drivers/pci/Kconfig"
825
826source "drivers/pcmcia/Kconfig"
827
828source "drivers/pci/hotplug/Kconfig"
829
Zhang Weif1f389d2008-04-18 13:33:39 -0700830config HAS_RAPIDIO
831 bool
832 default n
833
834config RAPIDIO
Alexandre Bounine56abde72014-01-23 15:56:04 -0800835 tristate "RapidIO support"
Alexandre Bounine388b78a2011-03-23 16:43:03 -0700836 depends on HAS_RAPIDIO || PCI
Zhang Weif1f389d2008-04-18 13:33:39 -0700837 help
838 If you say Y here, the kernel will include drivers and
839 infrastructure code to support RapidIO interconnect devices.
840
Alexandre Bounine388b78a2011-03-23 16:43:03 -0700841config FSL_RIO
842 bool "Freescale Embedded SRIO Controller support"
Alexandre Bounine56abde72014-01-23 15:56:04 -0800843 depends on RAPIDIO = y && HAS_RAPIDIO
Alexandre Bounine388b78a2011-03-23 16:43:03 -0700844 default "n"
845 ---help---
846 Include support for RapidIO controller on Freescale embedded
847 processors (MPC8548, MPC8641, etc).
848
Zhang Weif1f389d2008-04-18 13:33:39 -0700849source "drivers/rapidio/Kconfig"
850
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000851endmenu
852
Suzuki Poulose0f890c82011-12-14 22:57:15 +0000853config NONSTATIC_KERNEL
854 bool
855 default n
856
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000857menu "Advanced setup"
858 depends on PPC32
859
860config ADVANCED_OPTIONS
861 bool "Prompt for advanced kernel configuration options"
862 help
863 This option will enable prompting for a variety of advanced kernel
864 configuration options. These options can cause the kernel to not
865 work if they are set incorrectly, but can be used to optimize certain
866 aspects of kernel memory management.
867
868 Unless you know what you are doing, say N here.
869
870comment "Default settings for advanced configuration options are used"
871 depends on !ADVANCED_OPTIONS
872
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000873config LOWMEM_SIZE_BOOL
874 bool "Set maximum low memory"
875 depends on ADVANCED_OPTIONS
876 help
877 This option allows you to set the maximum amount of memory which
878 will be used as "low memory", that is, memory which the kernel can
879 access directly, without having to set up a kernel virtual mapping.
880 This can be useful in optimizing the layout of kernel virtual
881 memory.
882
883 Say N here unless you know what you are doing.
884
885config LOWMEM_SIZE
886 hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
887 default "0x30000000"
888
Trent Piepho96051462008-12-08 19:34:58 -0800889config LOWMEM_CAM_NUM_BOOL
890 bool "Set number of CAMs to use to map low memory"
891 depends on ADVANCED_OPTIONS && FSL_BOOKE
892 help
893 This option allows you to set the maximum number of CAM slots that
894 will be used to map low memory. There are a limited number of slots
895 available and even more limited number that will fit in the L1 MMU.
896 However, using more entries will allow mapping more low memory. This
897 can be useful in optimizing the layout of kernel virtual memory.
898
899 Say N here unless you know what you are doing.
900
901config LOWMEM_CAM_NUM
Josh Boyer9b71dbd2009-03-31 08:05:50 -0400902 depends on FSL_BOOKE
Trent Piepho96051462008-12-08 19:34:58 -0800903 int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL
904 default 3
905
Suzuki Poulose0f890c82011-12-14 22:57:15 +0000906config DYNAMIC_MEMSTART
Kees Cook642e56f2013-01-16 18:53:25 -0800907 bool "Enable page aligned dynamic load address for kernel"
908 depends on ADVANCED_OPTIONS && FLATMEM && (FSL_BOOKE || 44x)
Suzuki Poulose0f890c82011-12-14 22:57:15 +0000909 select NONSTATIC_KERNEL
Kumar Gala37dd2ba2008-04-22 04:22:34 +1000910 help
Suzuki Poulose0f890c82011-12-14 22:57:15 +0000911 This option enables the kernel to be loaded at any page aligned
912 physical address. The kernel creates a mapping from KERNELBASE to
913 the address where the kernel is loaded. The page size here implies
914 the TLB page size of the mapping for kernel on the particular platform.
915 Please refer to the init code for finding the TLB page size.
Kumar Gala37dd2ba2008-04-22 04:22:34 +1000916
Suzuki Poulose0f890c82011-12-14 22:57:15 +0000917 DYNAMIC_MEMSTART is an easy way of implementing pseudo-RELOCATABLE
918 kernel image, where the only restriction is the page aligned kernel
919 load address. When this option is enabled, the compile time physical
920 address CONFIG_PHYSICAL_START is ignored.
Kumar Gala37dd2ba2008-04-22 04:22:34 +1000921
Suzuki Poulose9c5f7d32011-12-14 22:58:12 +0000922 This option is overridden by CONFIG_RELOCATABLE
923
Kumar Gala37dd2ba2008-04-22 04:22:34 +1000924config RELOCATABLE
Kees Cook642e56f2013-01-16 18:53:25 -0800925 bool "Build a relocatable kernel"
Kevin Haodd189692013-12-24 15:12:06 +0800926 depends on ADVANCED_OPTIONS && FLATMEM && (44x || FSL_BOOKE)
Suzuki Poulose9c5f7d32011-12-14 22:58:12 +0000927 select NONSTATIC_KERNEL
Kumar Gala37dd2ba2008-04-22 04:22:34 +1000928 help
929 This builds a kernel image that is capable of running at the
Suzuki Poulose9c5f7d32011-12-14 22:58:12 +0000930 location the kernel is loaded at, without any alignment restrictions.
931 This feature is a superset of DYNAMIC_MEMSTART and hence overrides it.
Kumar Gala37dd2ba2008-04-22 04:22:34 +1000932
933 One use is for the kexec on panic case where the recovery kernel
934 must live at a different physical address than the primary
935 kernel.
936
937 Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address
938 it has been loaded at and the compile time physical addresses
939 CONFIG_PHYSICAL_START is ignored. However CONFIG_PHYSICAL_START
940 setting can still be useful to bootwrappers that need to know the
Suzuki Poulose9c5f7d32011-12-14 22:58:12 +0000941 load address of the kernel (eg. u-boot/mkimage).
942
943config RELOCATABLE_PPC32
944 def_bool y
945 depends on PPC32 && RELOCATABLE
Kumar Gala37dd2ba2008-04-22 04:22:34 +1000946
947config PAGE_OFFSET_BOOL
948 bool "Set custom page offset address"
949 depends on ADVANCED_OPTIONS
950 help
951 This option allows you to set the kernel virtual address at which
952 the kernel will map low memory. This can be useful in optimizing
953 the virtual memory layout of the system.
954
955 Say N here unless you know what you are doing.
956
957config PAGE_OFFSET
958 hex "Virtual address of memory base" if PAGE_OFFSET_BOOL
959 default "0xc0000000"
960
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000961config KERNEL_START_BOOL
962 bool "Set custom kernel base address"
963 depends on ADVANCED_OPTIONS
964 help
965 This option allows you to set the kernel virtual address at which
Kumar Gala37dd2ba2008-04-22 04:22:34 +1000966 the kernel will be loaded. Normally this should match PAGE_OFFSET
967 however there are times (like kdump) that one might not want them
968 to be the same.
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000969
970 Say N here unless you know what you are doing.
971
972config KERNEL_START
973 hex "Virtual address of kernel base" if KERNEL_START_BOOL
Kumar Gala37dd2ba2008-04-22 04:22:34 +1000974 default PAGE_OFFSET if PAGE_OFFSET_BOOL
Suzuki Poulose0f890c82011-12-14 22:57:15 +0000975 default "0xc2000000" if CRASH_DUMP && !NONSTATIC_KERNEL
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000976 default "0xc0000000"
977
Kumar Gala37dd2ba2008-04-22 04:22:34 +1000978config PHYSICAL_START_BOOL
979 bool "Set physical address where the kernel is loaded"
980 depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE
981 help
982 This gives the physical address where the kernel is loaded.
983
984 Say N here unless you know what you are doing.
985
986config PHYSICAL_START
987 hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL
Suzuki Poulose0f890c82011-12-14 22:57:15 +0000988 default "0x02000000" if PPC_STD_MMU && CRASH_DUMP && !NONSTATIC_KERNEL
Kumar Gala37dd2ba2008-04-22 04:22:34 +1000989 default "0x00000000"
990
991config PHYSICAL_ALIGN
992 hex
Trent Piephoc8f35702008-12-08 19:34:59 -0800993 default "0x04000000" if FSL_BOOKE
Kumar Gala37dd2ba2008-04-22 04:22:34 +1000994 help
995 This value puts the alignment restrictions on physical address
996 where kernel is loaded and run from. Kernel is compiled for an
997 address which meets above alignment restriction.
998
Paul Mackerras14cf11a2005-09-26 16:04:21 +1000999config TASK_SIZE_BOOL
1000 bool "Set custom user task size"
1001 depends on ADVANCED_OPTIONS
1002 help
1003 This option allows you to set the amount of virtual address space
1004 allocated to user tasks. This can be useful in optimizing the
1005 virtual memory layout of the system.
1006
1007 Say N here unless you know what you are doing.
1008
1009config TASK_SIZE
1010 hex "Size of user task space" if TASK_SIZE_BOOL
Paul Bolle933ee712013-03-27 00:47:03 +00001011 default "0x80000000" if PPC_8xx
Kumar Gala4d9e55102007-10-11 13:40:21 -05001012 default "0xc0000000"
Paul Mackerras14cf11a2005-09-26 16:04:21 +10001013
Benjamin Herrenschmidt84532a02009-05-27 13:33:14 +10001014config CONSISTENT_SIZE_BOOL
1015 bool "Set custom consistent memory pool size"
1016 depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
1017 help
1018 This option allows you to set the size of the
1019 consistent memory pool. This pool of virtual memory
1020 is used to make consistent memory allocations.
1021
1022config CONSISTENT_SIZE
1023 hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
1024 default "0x00200000" if NOT_COHERENT_CACHE
1025
Paul Mackerras14cf11a2005-09-26 16:04:21 +10001026config PIN_TLB
1027 bool "Pinned Kernel TLBs (860 ONLY)"
1028 depends on ADVANCED_OPTIONS && 8xx
1029endmenu
1030
Stephen Rothwellcabb5582005-09-30 16:16:52 +10001031if PPC64
Paul Mackerras549e8152008-08-30 11:43:47 +10001032config RELOCATABLE
1033 bool "Build a relocatable kernel"
Guenter Roeckfb43e842014-06-30 11:45:30 -07001034 depends on !COMPILE_TEST
Suzuki Poulose0f890c82011-12-14 22:57:15 +00001035 select NONSTATIC_KERNEL
Paul Mackerras549e8152008-08-30 11:43:47 +10001036 help
1037 This builds a kernel image that is capable of running anywhere
1038 in the RMA (real memory area) at any 16k-aligned base address.
1039 The kernel is linked as a position-independent executable (PIE)
1040 and contains dynamic relocations which are processed early
1041 in the bootup process.
1042
1043 One use is for the kexec on panic case where the recovery kernel
1044 must live at a different physical address than the primary
1045 kernel.
1046
Paul Mackerrasbdbc29c2013-08-27 16:07:49 +10001047# This value must have zeroes in the bottom 60 bits otherwise lots will break
Kumar Gala37dd2ba2008-04-22 04:22:34 +10001048config PAGE_OFFSET
Stephen Rothwellcabb5582005-09-30 16:16:52 +10001049 hex
Stephen Rothwelleeb2d212005-09-30 17:24:15 +10001050 default "0xc000000000000000"
Kumar Gala37dd2ba2008-04-22 04:22:34 +10001051config KERNEL_START
1052 hex
Kumar Gala37dd2ba2008-04-22 04:22:34 +10001053 default "0xc000000000000000"
1054config PHYSICAL_START
1055 hex
Kumar Gala37dd2ba2008-04-22 04:22:34 +10001056 default "0x00000000"
Stephen Rothwellcabb5582005-09-30 16:16:52 +10001057endif
1058
Michael Ellermana4da0d52013-10-11 14:07:57 +11001059config ARCH_RANDOM
1060 def_bool n
1061
Paul Mackerras14cf11a2005-09-26 16:04:21 +10001062source "net/Kconfig"
1063
1064source "drivers/Kconfig"
1065
1066source "fs/Kconfig"
1067
Li Yang98658532006-10-03 23:10:46 -05001068source "arch/powerpc/sysdev/qe_lib/Kconfig"
1069
Paul Mackerras14cf11a2005-09-26 16:04:21 +10001070source "lib/Kconfig"
1071
Paul Mackerras14cf11a2005-09-26 16:04:21 +10001072source "arch/powerpc/Kconfig.debug"
1073
1074source "security/Kconfig"
1075
1076config KEYS_COMPAT
1077 bool
1078 depends on COMPAT && KEYS
1079 default y
1080
1081source "crypto/Kconfig"
Domen Puncer6f668282007-09-21 00:00:11 +10001082
Sylvain Munaut1088a202007-09-16 20:53:25 +10001083config PPC_LIB_RHEAP
1084 bool
1085
Hollis Blanchardbbf45ba2008-04-16 23:28:09 -05001086source "arch/powerpc/kvm/Kconfig"