powerpc64: port of the function graph tracer
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / arch / powerpc / Kconfig
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1# For a description of the syntax of this configuration file,
2# see Documentation/kbuild/kconfig-language.txt.
3#
4
5mainmenu "Linux/PowerPC Kernel Configuration"
6
a0ae9c7c 7source "arch/powerpc/platforms/Kconfig.cputype"
17e638bc 8
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9config PPC32
10 bool
11 default y if !PPC64
12
13config 64BIT
14 bool
15 default y if PPC64
16
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17config WORD_SIZE
18 int
19 default 64 if PPC64
20 default 32 if !PPC64
21
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22config ARCH_PHYS_ADDR_T_64BIT
23 def_bool PPC64 || PHYS_64BIT
24
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25config MMU
26 bool
27 default y
28
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29config GENERIC_CMOS_UPDATE
30 def_bool y
31
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32config GENERIC_TIME
33 def_bool y
34
35config GENERIC_TIME_VSYSCALL
36 def_bool y
37
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38config GENERIC_CLOCKEVENTS
39 def_bool y
40
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41config GENERIC_HARDIRQS
42 bool
43 default y
44
988c388a 45config HAVE_SETUP_PER_CPU_AREA
b32ef636 46 def_bool PPC64
47
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48config IRQ_PER_CPU
49 bool
50 default y
51
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52config STACKTRACE_SUPPORT
53 bool
54 default y
55
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56config HAVE_LATENCYTOP_SUPPORT
57 def_bool y
58
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59config TRACE_IRQFLAGS_SUPPORT
60 bool
61 depends on PPC64
62 default y
63
64config LOCKDEP_SUPPORT
65 bool
66 default y
67
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68config RWSEM_GENERIC_SPINLOCK
69 bool
70
71config RWSEM_XCHGADD_ALGORITHM
72 bool
73 default y
74
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75config GENERIC_LOCKBREAK
76 bool
77 default y
78 depends on SMP && PREEMPT
79
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80config ARCH_HAS_ILOG2_U32
81 bool
ef55d53c 82 default y
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83
84config ARCH_HAS_ILOG2_U64
85 bool
ef55d53c 86 default y if 64BIT
f0d1b0b3 87
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88config GENERIC_HWEIGHT
89 bool
90 default y
91
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92config GENERIC_CALIBRATE_DELAY
93 bool
94 default y
95
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96config GENERIC_FIND_NEXT_BIT
97 bool
98 default y
99
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100config GENERIC_GPIO
101 bool
102 help
103 Generic GPIO API support
104
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105config ARCH_NO_VIRT_TO_BUS
106 def_bool PPC64
107
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108config PPC
109 bool
110 default y
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111 select HAVE_FTRACE_MCOUNT_RECORD
112 select HAVE_DYNAMIC_FTRACE
606576ce 113 select HAVE_FUNCTION_TRACER
6794c782 114 select HAVE_FUNCTION_GRAPH_TRACER if !DYNAMIC_FTRACE && PPC64
7444a72e 115 select ARCH_WANT_OPTIONAL_GPIOLIB
ec7748b5 116 select HAVE_IDE
a1f242ff 117 select HAVE_IOREMAP_PROT
58340a07 118 select HAVE_EFFICIENT_UNALIGNED_ACCESS
3f550096 119 select HAVE_KPROBES
17ce452f 120 select HAVE_ARCH_KGDB
9edddaa2 121 select HAVE_KRETPROBES
dec2b0d0 122 select HAVE_ARCH_TRACEHOOK
d9b2b2a2 123 select HAVE_LMB
7ff86b03 124 select HAVE_DMA_ATTRS if PPC64
b7d7a240 125 select USE_GENERIC_SMP_HELPERS if SMP
4e491d14 126 select HAVE_OPROFILE
ee6a0932 127 select HAVE_SYSCALL_WRAPPERS if PPC64
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128
129config EARLY_PRINTK
130 bool
51d3082f 131 default y
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132
133config COMPAT
134 bool
135 default y if PPC64
01e31dba 136 select COMPAT_BINFMT_ELF
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137
138config SYSVIPC_COMPAT
139 bool
140 depends on COMPAT && SYSVIPC
141 default y
142
143# All PPC32s use generic nvram driver through ppc_md
144config GENERIC_NVRAM
145 bool
146 default y if PPC32
147
ae1e9130 148config SCHED_OMIT_FRAME_POINTER
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149 bool
150 default y
151
152config ARCH_MAY_HAVE_PC_FDC
153 bool
bed59275 154 default !PPC_PSERIES || PCI
14cf11af 155
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156config PPC_OF
157 def_bool y
158
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159config OF
160 def_bool y
161
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162config PPC_UDBG_16550
163 bool
164 default n
165
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166config GENERIC_TBSYNC
167 bool
168 default y if PPC32 && SMP
169 default n
170
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171config AUDIT_ARCH
172 bool
173 default y
174
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175config GENERIC_BUG
176 bool
177 default y
178 depends on BUG
179
b3028878 180config SYS_SUPPORTS_APM_EMULATION
58da10bb 181 default y if PMAC_APM_EMU
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182 bool
183
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184config DEFAULT_UIMAGE
185 bool
186 help
187 Used to allow a board to specify it wants a uImage built by default
188 default n
189
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190config REDBOOT
191 bool
192
801e4062 193config HIBERNATE_32
543b9fd3 194 bool
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195 depends on (PPC_PMAC && !SMP) || BROKEN
196 default y
197
198config HIBERNATE_64
199 bool
200 depends on BROKEN || (PPC_PMAC64 && EXPERIMENTAL)
201 default y
202
203config ARCH_HIBERNATION_POSSIBLE
204 bool
205 depends on (PPC64 && HIBERNATE_64) || (PPC32 && HIBERNATE_32)
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206 default y
207
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208config ARCH_SUSPEND_POSSIBLE
209 def_bool y
d49747bd 210 depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx
f4cb5700 211
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212config PPC_DCR_NATIVE
213 bool
214 default n
215
216config PPC_DCR_MMIO
217 bool
218 default n
219
220config PPC_DCR
221 bool
222 depends on PPC_DCR_NATIVE || PPC_DCR_MMIO
223 default y
224
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225config PPC_OF_PLATFORM_PCI
226 bool
373a6da1 227 depends on PCI
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228 depends on PPC64 # not supported on 32 bits yet
229 default n
230
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231source "init/Kconfig"
232
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233source "kernel/Kconfig.freezer"
234
a2d2e1ec 235source "arch/powerpc/sysdev/Kconfig"
4330f5da 236source "arch/powerpc/platforms/Kconfig"
14cf11af 237
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238menu "Kernel options"
239
240config HIGHMEM
241 bool "High memory support"
242 depends on PPC32
243
1ad74998 244source kernel/time/Kconfig
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245source kernel/Kconfig.hz
246source kernel/Kconfig.preempt
247source "fs/Kconfig.binfmt"
248
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249config HUGETLB_PAGE_SIZE_VARIABLE
250 bool
251 depends on HUGETLB_PAGE
252 default y
253
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254config MATH_EMULATION
255 bool "Math emulation"
4d52719a 256 depends on 4xx || 8xx || E200 || PPC_MPC832x || E500
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257 ---help---
258 Some PowerPC chips designed for embedded applications do not have
259 a floating-point unit and therefore do not implement the
260 floating-point instructions in the PowerPC instruction set. If you
261 say Y here, the kernel will include code to emulate a floating-point
262 unit, which will allow programs that use floating-point
263 instructions to run.
264
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265config 8XX_MINIMAL_FPEMU
266 bool "Minimal math emulation for 8xx"
267 depends on 8xx && !MATH_EMULATION
268 help
269 Older arch/ppc kernels still emulated a few floating point
270 instructions such as load and store, even when full math
271 emulation is disabled. Say "Y" here if you want to preserve
272 this behavior.
273
274 It is recommended that you build a soft-float userspace instead.
275
14cf11af 276config IOMMU_VMERGE
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277 bool "Enable IOMMU virtual merging"
278 depends on PPC64
279 default y
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280 help
281 Cause IO segments sent to a device for DMA to be merged virtually
282 by the IOMMU when they happen to have been allocated contiguously.
283 This doesn't add pressure to the IOMMU allocator. However, some
284 drivers don't support getting large merged segments coming back
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285 from *_map_sg().
286
287 Most drivers don't have this problem; it is safe to say Y here.
14cf11af 288
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289config IOMMU_HELPER
290 def_bool PPC64
291
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292config PPC_NEED_DMA_SYNC_OPS
293 def_bool y
294 depends on NOT_COHERENT_CACHE
295
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296config HOTPLUG_CPU
297 bool "Support for enabling/disabling CPUs"
298 depends on SMP && HOTPLUG && EXPERIMENTAL && (PPC_PSERIES || PPC_PMAC)
299 ---help---
300 Say Y here to be able to disable and re-enable individual
301 CPUs at runtime on SMP machines.
302
303 Say N if you are unsure.
304
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305config ARCH_ENABLE_MEMORY_HOTPLUG
306 def_bool y
307
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308config ARCH_HAS_WALK_MEMORY
309 def_bool y
310
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311config ARCH_ENABLE_MEMORY_HOTREMOVE
312 def_bool y
313
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314config KEXEC
315 bool "kexec system call (EXPERIMENTAL)"
fd4ba7e2 316 depends on (PPC_PRPMC2800 || PPC_MULTIPLATFORM) && EXPERIMENTAL
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317 help
318 kexec is a system call that implements the ability to shutdown your
319 current kernel, and to start another kernel. It is like a reboot
1f1332f7 320 but it is independent of the system firmware. And like a reboot
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321 you can start any kernel with it, not just Linux.
322
1f1332f7 323 The name comes from the similarity to the exec system call.
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324
325 It is an ongoing process to be certain the hardware in a machine
326 is properly shutdown, so do not be surprised if this code does not
327 initially work for you. It may help to enable device hotplugging
328 support. As of this writing the exact hardware interface is
329 strongly in flux, so no good recommendation can be made.
330
e8625d46 331config CRASH_DUMP
3420b5da 332 bool "Build a kdump crash kernel"
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333 depends on PPC64 || 6xx
334 select RELOCATABLE if PPC64
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335 help
336 Build a kernel suitable for use as a kdump capture kernel.
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337 The same kernel binary can be used as production kernel and dump
338 capture kernel.
e8625d46 339
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340config PHYP_DUMP
341 bool "Hypervisor-assisted dump (EXPERIMENTAL)"
342 depends on PPC_PSERIES && EXPERIMENTAL
343 help
344 Hypervisor-assisted dump is meant to be a kdump replacement
345 offering robustness and speed not possible without system
346 hypervisor assistence.
347
348 If unsure, say "N"
349
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350config PPCBUG_NVRAM
351 bool "Enable reading PPCBUG NVRAM during boot" if PPLUS || LOPEC
352 default y if PPC_PREP
353
354config IRQ_ALL_CPUS
355 bool "Distribute interrupts on all CPUs by default"
356 depends on SMP && !MV64360
357 help
358 This option gives the kernel permission to distribute IRQs across
359 multiple CPUs. Saying N here will route all IRQs to the first
360 CPU. Generally saying Y is safe, although some problems have been
361 reported with SMP Power Macintoshes with this option enabled.
362
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363config NUMA
364 bool "NUMA support"
365 depends on PPC64
366 default y if SMP && PPC_PSERIES
367
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368config NODES_SHIFT
369 int
370 default "4"
371 depends on NEED_MULTIPLE_NODES
372
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373config ARCH_SELECT_MEMORY_MODEL
374 def_bool y
375 depends on PPC64
376
377config ARCH_FLATMEM_ENABLE
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378 def_bool y
379 depends on (PPC64 && !NUMA) || PPC32
14cf11af 380
45fb6cea 381config ARCH_SPARSEMEM_ENABLE
14cf11af 382 def_bool y
9100b205 383 depends on PPC64
d29eff7b 384 select SPARSEMEM_VMEMMAP_ENABLE
14cf11af 385
45fb6cea 386config ARCH_SPARSEMEM_DEFAULT
14cf11af 387 def_bool y
78bde53e 388 depends on (SMP && PPC_PSERIES) || PPC_PS3
14cf11af 389
c67c3cb4 390config ARCH_POPULATES_NODE_MAP
14cf11af 391 def_bool y
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392
393source "mm/Kconfig"
14cf11af 394
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395config ARCH_MEMORY_PROBE
396 def_bool y
397 depends on MEMORY_HOTPLUG
398
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399# Some NUMA nodes have memory ranges that span
400# other nodes. Even though a pfn is valid and
401# between a node's start and end pfns, it may not
402# reside on that node. See memmap_init_zone()
403# for details.
404config NODES_SPAN_OTHER_NODES
405 def_bool y
406 depends on NEED_MULTIPLE_NODES
407
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408config PPC_HAS_HASH_64K
409 bool
410 depends on PPC64
411 default n
412
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413choice
414 prompt "Page size"
415 default PPC_4K_PAGES
3c726f8d 416 help
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417 Select the kernel logical page size. Increasing the page size
418 will reduce software overhead at each page boundary, allow
419 hardware prefetch mechanisms to be more effective, and allow
420 larger dma transfers increasing IO efficiency and reducing
421 overhead. However the utilization of memory will increase.
422 For example, each cached file will using a multiple of the
423 page size to hold its contents and the difference between the
424 end of file and the end of page is wasted.
425
426 Some dedicated systems, such as software raid serving with
427 accelerated calculations, have shown significant increases.
428
429 If you configure a 64 bit kernel for 64k pages but the
430 processor does not support them, then the kernel will simulate
431 them with 4k pages, loading them on demand, but with the
432 reduced software overhead and larger internal fragmentation.
433 For the 32 bit kernel, a large page option will not be offered
434 unless it is supported by the configured processor.
435
436 If unsure, choose 4K_PAGES.
437
438config PPC_4K_PAGES
439 bool "4k page size"
440
441config PPC_16K_PAGES
442 bool "16k page size" if 44x
443
444config PPC_64K_PAGES
445 bool "64k page size" if 44x || PPC_STD_MMU_64
446 select PPC_HAS_HASH_64K if PPC_STD_MMU_64
447
448endchoice
3c726f8d 449
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450config FORCE_MAX_ZONEORDER
451 int "Maximum zone order"
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452 range 9 64 if PPC_STD_MMU_64 && PPC_64K_PAGES
453 default "9" if PPC_STD_MMU_64 && PPC_64K_PAGES
454 range 13 64 if PPC_STD_MMU_64 && !PPC_64K_PAGES
455 default "13" if PPC_STD_MMU_64 && !PPC_64K_PAGES
456 range 9 64 if PPC_STD_MMU_32 && PPC_16K_PAGES
457 default "9" if PPC_STD_MMU_32 && PPC_16K_PAGES
458 range 7 64 if PPC_STD_MMU_32 && PPC_64K_PAGES
459 default "7" if PPC_STD_MMU_32 && PPC_64K_PAGES
ebe40c5c 460 range 11 64
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461 default "11"
462 help
463 The kernel memory allocator divides physically contiguous memory
464 blocks into "zones", where each zone is a power of two number of
465 pages. This option selects the largest power of two that the kernel
466 keeps in the memory allocator. If you need to allocate very large
467 blocks of physically contiguous memory, then you may need to
468 increase this value.
469
470 This config option is actually maximum order plus one. For example,
471 a value of 11 means that the largest free memory block is 2^10 pages.
472
473 The page size is not necessarily 4KB. For example, on 64-bit
474 systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES. Keep
475 this in mind when choosing a value for this option.
476
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477config PPC_SUBPAGE_PROT
478 bool "Support setting protections for 4k subpages"
ca9153a3 479 depends on PPC_STD_MMU_64 && PPC_64K_PAGES
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480 help
481 This option adds support for a system call to allow user programs
482 to set access permissions (read/write, readonly, or no access)
483 on the 4k subpages of each 64k page.
484
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485config SCHED_SMT
486 bool "SMT (Hyperthreading) scheduler support"
487 depends on PPC64 && SMP
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488 help
489 SMT scheduler support improves the CPU scheduler's decision making
490 when dealing with POWER5 cpus at a cost of slightly increased
491 overhead in some places. If unsure say N here.
492
493config PROC_DEVICETREE
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494 bool "Support for device tree in /proc"
495 depends on PROC_FS
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496 help
497 This option adds a device-tree directory under /proc which contains
498 an image of the device tree that the kernel copies from Open
5f296755 499 Firmware or other boot firmware. If unsure, say Y here.
14cf11af 500
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501config CMDLINE_BOOL
502 bool "Default bootloader kernel arguments"
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503
504config CMDLINE
505 string "Initial kernel command string"
506 depends on CMDLINE_BOOL
507 default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
508 help
509 On some platforms, there is currently no way for the boot loader to
510 pass arguments to the kernel. For these platforms, you can supply
511 some command-line options at build time by entering them here. In
512 most cases you will need to specify the root device here.
513
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514config EXTRA_TARGETS
515 string "Additional default image types"
516 help
517 List additional targets to be built by the bootwrapper here (separated
518 by spaces). This is useful for targets that depend of device tree
519 files in the .dts directory.
520
521 Targets in this list will be build as part of the default build
522 target, or when the user does a 'make zImage' or a
523 'make zImage.initrd'.
524
525 If unsure, leave blank
526
14cf11af 527if !44x || BROKEN
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528config ARCH_WANTS_FREEZER_CONTROL
529 def_bool y
530 depends on ADB_PMU
531
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532source kernel/power/Kconfig
533endif
534
535config SECCOMP
536 bool "Enable seccomp to safely compute untrusted bytecode"
537 depends on PROC_FS
538 default y
539 help
540 This kernel feature is useful for number crunching applications
541 that may need to compute untrusted bytecode during their
542 execution. By using pipes or other transports made available to
543 the process as file descriptors supporting the read/write
544 syscalls, it's possible to isolate those applications in
545 their own address space using seccomp. Once seccomp is
546 enabled via /proc/<pid>/seccomp, it cannot be disabled
547 and the task is only allowed to execute a few safe syscalls
548 defined by each seccomp mode.
549
550 If unsure, say Y. Only embedded should say N here.
551
552endmenu
553
554config ISA_DMA_API
555 bool
373a6da1 556 default !PPC_ISERIES || PCI
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557
558menu "Bus options"
559
560config ISA
561 bool "Support for ISA-bus hardware"
562 depends on PPC_PREP || PPC_CHRP
f9bd170a 563 select PPC_I8259
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564 help
565 Find out whether you have ISA slots on your motherboard. ISA is the
566 name of a bus system, i.e. the way the CPU talks to the other stuff
567 inside your box. If you have an Apple machine, say N here; if you
568 have an IBM RS/6000 or pSeries machine or a PReP machine, say Y. If
569 you have an embedded board, consult your board documentation.
570
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571config ZONE_DMA
572 bool
573 default y
574
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575config GENERIC_ISA_DMA
576 bool
577 depends on PPC64 || POWER4 || 6xx && !CPM2
578 default y
579
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580config PPC_INDIRECT_PCI
581 bool
582 depends on PCI
63dafe57 583 default y if 40x || 44x
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584 default n
585
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586config EISA
587 bool
588
589config SBUS
590 bool
591
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592config FSL_SOC
593 bool
594
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595config FSL_PCI
596 bool
597 select PPC_INDIRECT_PCI
d0839118 598 select PCI_QUIRKS
55c44991 599
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600config 4xx_SOC
601 bool
602
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603config FSL_LBC
604 bool
605 help
606 Freescale Localbus support
607
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608config FSL_GTM
609 bool
610 depends on PPC_83xx || QUICC_ENGINE || CPM2
611 help
612 Freescale General-purpose Timers support
613
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614# Yes MCA RS/6000s exist but Linux-PPC does not currently support any
615config MCA
616 bool
617
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618# Platforms that what PCI turned unconditionally just do select PCI
619# in their config node. Platforms that want to choose at config
620# time should select PPC_PCI_CHOICE
621config PPC_PCI_CHOICE
622 bool
623
14cf11af 624config PCI
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625 bool "PCI support" if PPC_PCI_CHOICE
626 default y if !40x && !CPM2 && !8xx && !PPC_83xx \
53158620 627 && !PPC_85xx && !PPC_86xx
f21f49ea 628 default PCI_PERMEDIA if !4xx && !CPM2 && !8xx
14cf11af 629 default PCI_QSPAN if !4xx && !CPM2 && 8xx
df87ef55 630 select ARCH_SUPPORTS_MSI
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631 help
632 Find out whether your system includes a PCI bus. PCI is the name of
633 a bus system, i.e. the way the CPU talks to the other stuff inside
634 your box. If you say Y here, the kernel will include drivers and
635 infrastructure code to support PCI bus devices.
636
637config PCI_DOMAINS
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638 def_bool PCI
639
640config PCI_SYSCALL
641 def_bool PCI
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643config PCI_QSPAN
644 bool "QSpan PCI"
645 depends on !4xx && !CPM2 && 8xx
f9bd170a 646 select PPC_I8259
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647 help
648 Say Y here if you have a system based on a Motorola 8xx-series
649 embedded processor with a QSPAN PCI interface, otherwise say N.
650
651config PCI_8260
652 bool
653 depends on PCI && 8260
25635c71 654 select PPC_INDIRECT_PCI
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655 default y
656
657config 8260_PCI9
4a3ecc62 658 bool "Enable workaround for MPC826x erratum PCI 9"
e00c5498 659 depends on PCI_8260 && !8272
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660 default y
661
662choice
4a3ecc62 663 prompt "IDMA channel for PCI 9 workaround"
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664 depends on 8260_PCI9
665
666config 8260_PCI9_IDMA1
667 bool "IDMA1"
668
669config 8260_PCI9_IDMA2
670 bool "IDMA2"
671
672config 8260_PCI9_IDMA3
673 bool "IDMA3"
674
675config 8260_PCI9_IDMA4
676 bool "IDMA4"
677
678endchoice
679
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680source "drivers/pci/pcie/Kconfig"
681
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682source "drivers/pci/Kconfig"
683
684source "drivers/pcmcia/Kconfig"
685
686source "drivers/pci/hotplug/Kconfig"
687
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688config HAS_RAPIDIO
689 bool
690 default n
691
692config RAPIDIO
693 bool "RapidIO support"
694 depends on HAS_RAPIDIO
695 help
696 If you say Y here, the kernel will include drivers and
697 infrastructure code to support RapidIO interconnect devices.
698
699source "drivers/rapidio/Kconfig"
700
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701endmenu
702
703menu "Advanced setup"
704 depends on PPC32
705
706config ADVANCED_OPTIONS
707 bool "Prompt for advanced kernel configuration options"
708 help
709 This option will enable prompting for a variety of advanced kernel
710 configuration options. These options can cause the kernel to not
711 work if they are set incorrectly, but can be used to optimize certain
712 aspects of kernel memory management.
713
714 Unless you know what you are doing, say N here.
715
716comment "Default settings for advanced configuration options are used"
717 depends on !ADVANCED_OPTIONS
718
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719config LOWMEM_SIZE_BOOL
720 bool "Set maximum low memory"
721 depends on ADVANCED_OPTIONS
722 help
723 This option allows you to set the maximum amount of memory which
724 will be used as "low memory", that is, memory which the kernel can
725 access directly, without having to set up a kernel virtual mapping.
726 This can be useful in optimizing the layout of kernel virtual
727 memory.
728
729 Say N here unless you know what you are doing.
730
731config LOWMEM_SIZE
732 hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
733 default "0x30000000"
734
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735config LOWMEM_CAM_NUM_BOOL
736 bool "Set number of CAMs to use to map low memory"
737 depends on ADVANCED_OPTIONS && FSL_BOOKE
738 help
739 This option allows you to set the maximum number of CAM slots that
740 will be used to map low memory. There are a limited number of slots
741 available and even more limited number that will fit in the L1 MMU.
742 However, using more entries will allow mapping more low memory. This
743 can be useful in optimizing the layout of kernel virtual memory.
744
745 Say N here unless you know what you are doing.
746
747config LOWMEM_CAM_NUM
748 int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL
749 default 3
750
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751config RELOCATABLE
752 bool "Build a relocatable kernel (EXPERIMENTAL)"
753 depends on EXPERIMENTAL && ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE
754 help
755 This builds a kernel image that is capable of running at the
756 location the kernel is loaded at (some alignment restrictions may
757 exist).
758
759 One use is for the kexec on panic case where the recovery kernel
760 must live at a different physical address than the primary
761 kernel.
762
763 Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address
764 it has been loaded at and the compile time physical addresses
765 CONFIG_PHYSICAL_START is ignored. However CONFIG_PHYSICAL_START
766 setting can still be useful to bootwrappers that need to know the
767 load location of the kernel (eg. u-boot/mkimage).
768
769config PAGE_OFFSET_BOOL
770 bool "Set custom page offset address"
771 depends on ADVANCED_OPTIONS
772 help
773 This option allows you to set the kernel virtual address at which
774 the kernel will map low memory. This can be useful in optimizing
775 the virtual memory layout of the system.
776
777 Say N here unless you know what you are doing.
778
779config PAGE_OFFSET
780 hex "Virtual address of memory base" if PAGE_OFFSET_BOOL
781 default "0xc0000000"
782
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783config KERNEL_START_BOOL
784 bool "Set custom kernel base address"
785 depends on ADVANCED_OPTIONS
786 help
787 This option allows you to set the kernel virtual address at which
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788 the kernel will be loaded. Normally this should match PAGE_OFFSET
789 however there are times (like kdump) that one might not want them
790 to be the same.
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791
792 Say N here unless you know what you are doing.
793
794config KERNEL_START
795 hex "Virtual address of kernel base" if KERNEL_START_BOOL
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796 default PAGE_OFFSET if PAGE_OFFSET_BOOL
797 default "0xc2000000" if CRASH_DUMP
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798 default "0xc0000000"
799
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800config PHYSICAL_START_BOOL
801 bool "Set physical address where the kernel is loaded"
802 depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE
803 help
804 This gives the physical address where the kernel is loaded.
805
806 Say N here unless you know what you are doing.
807
808config PHYSICAL_START
809 hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL
810 default "0x02000000" if PPC_STD_MMU && CRASH_DUMP
811 default "0x00000000"
812
813config PHYSICAL_ALIGN
814 hex
c8f3570b 815 default "0x04000000" if FSL_BOOKE
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816 help
817 This value puts the alignment restrictions on physical address
818 where kernel is loaded and run from. Kernel is compiled for an
819 address which meets above alignment restriction.
820
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821config TASK_SIZE_BOOL
822 bool "Set custom user task size"
823 depends on ADVANCED_OPTIONS
824 help
825 This option allows you to set the amount of virtual address space
826 allocated to user tasks. This can be useful in optimizing the
827 virtual memory layout of the system.
828
829 Say N here unless you know what you are doing.
830
831config TASK_SIZE
832 hex "Size of user task space" if TASK_SIZE_BOOL
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833 default "0x80000000" if PPC_PREP || PPC_8xx
834 default "0xc0000000"
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835
836config CONSISTENT_START_BOOL
837 bool "Set custom consistent memory pool address"
838 depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
839 help
840 This option allows you to set the base virtual address
4b3f686d 841 of the consistent memory pool. This pool of virtual
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842 memory is used to make consistent memory allocations.
843
844config CONSISTENT_START
845 hex "Base virtual address of consistent memory pool" if CONSISTENT_START_BOOL
ccf0d68e 846 default "0xfd000000" if (NOT_COHERENT_CACHE && 8xx)
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847 default "0xff100000" if NOT_COHERENT_CACHE
848
849config CONSISTENT_SIZE_BOOL
850 bool "Set custom consistent memory pool size"
851 depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
852 help
4b3f686d 853 This option allows you to set the size of the
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854 consistent memory pool. This pool of virtual memory
855 is used to make consistent memory allocations.
856
857config CONSISTENT_SIZE
858 hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
859 default "0x00200000" if NOT_COHERENT_CACHE
860
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861config PIN_TLB
862 bool "Pinned Kernel TLBs (860 ONLY)"
863 depends on ADVANCED_OPTIONS && 8xx
864endmenu
865
cabb5587 866if PPC64
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867config RELOCATABLE
868 bool "Build a relocatable kernel"
869 help
870 This builds a kernel image that is capable of running anywhere
871 in the RMA (real memory area) at any 16k-aligned base address.
872 The kernel is linked as a position-independent executable (PIE)
873 and contains dynamic relocations which are processed early
874 in the bootup process.
875
876 One use is for the kexec on panic case where the recovery kernel
877 must live at a different physical address than the primary
878 kernel.
879
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880config PAGE_OFFSET
881 hex
882 default "0xc000000000000000"
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883config KERNEL_START
884 hex
eeb2d218 885 default "0xc000000000000000"
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886config PHYSICAL_START
887 hex
37dd2bad 888 default "0x00000000"
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889endif
890
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891source "net/Kconfig"
892
893source "drivers/Kconfig"
894
895source "fs/Kconfig"
896
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897source "arch/powerpc/sysdev/qe_lib/Kconfig"
898
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899source "lib/Kconfig"
900
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901source "arch/powerpc/Kconfig.debug"
902
903source "security/Kconfig"
904
905config KEYS_COMPAT
906 bool
907 depends on COMPAT && KEYS
908 default y
909
910source "crypto/Kconfig"
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911
912config PPC_CLOCK
913 bool
914 default n
9483a578 915 select HAVE_CLK
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916
917config PPC_LIB_RHEAP
918 bool
919
bbf45ba5 920source "arch/powerpc/kvm/Kconfig"