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Linux/arch/powerpc/Kconfig

  1 source "arch/powerpc/platforms/Kconfig.cputype"
  2 
  3 config PPC32
  4         bool
  5         default y if !PPC64
  6 
  7 config 32BIT
  8         bool
  9         default y if PPC32
 10 
 11 config 64BIT
 12         bool
 13         default y if PPC64
 14 
 15 config WORD_SIZE
 16         int
 17         default 64 if PPC64
 18         default 32 if !PPC64
 19 
 20 config ARCH_PHYS_ADDR_T_64BIT
 21        def_bool PPC64 || PHYS_64BIT
 22 
 23 config ARCH_DMA_ADDR_T_64BIT
 24         def_bool ARCH_PHYS_ADDR_T_64BIT
 25 
 26 config MMU
 27         bool
 28         default y
 29 
 30 config HAVE_SETUP_PER_CPU_AREA
 31         def_bool PPC64
 32 
 33 config NEED_PER_CPU_EMBED_FIRST_CHUNK
 34         def_bool PPC64
 35 
 36 config NR_IRQS
 37         int "Number of virtual interrupt numbers"
 38         range 32 32768
 39         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 
 46 config STACKTRACE_SUPPORT
 47         bool
 48         default y
 49 
 50 config HAVE_LATENCYTOP_SUPPORT
 51         def_bool y
 52 
 53 config TRACE_IRQFLAGS_SUPPORT
 54         bool
 55         default y
 56 
 57 config LOCKDEP_SUPPORT
 58         bool
 59         default y
 60 
 61 config RWSEM_GENERIC_SPINLOCK
 62         bool
 63 
 64 config RWSEM_XCHGADD_ALGORITHM
 65         bool
 66         default y
 67 
 68 config GENERIC_LOCKBREAK
 69         bool
 70         default y
 71         depends on SMP && PREEMPT
 72 
 73 config ARCH_HAS_ILOG2_U32
 74         bool
 75         default y
 76 
 77 config ARCH_HAS_ILOG2_U64
 78         bool
 79         default y if 64BIT
 80 
 81 config GENERIC_HWEIGHT
 82         bool
 83         default y
 84 
 85 config PPC
 86         bool
 87         default y
 88         select ARCH_MIGHT_HAVE_PC_PARPORT
 89         select ARCH_MIGHT_HAVE_PC_SERIO
 90         select BINFMT_ELF
 91         select ARCH_HAS_ELF_RANDOMIZE
 92         select OF
 93         select OF_EARLY_FLATTREE
 94         select OF_RESERVED_MEM
 95         select HAVE_FTRACE_MCOUNT_RECORD
 96         select HAVE_DYNAMIC_FTRACE
 97         select HAVE_FUNCTION_TRACER
 98         select HAVE_FUNCTION_GRAPH_TRACER
 99         select SYSCTL_EXCEPTION_TRACE
100         select ARCH_WANT_OPTIONAL_GPIOLIB
101         select VIRT_TO_BUS if !PPC64
102         select HAVE_IDE
103         select HAVE_IOREMAP_PROT
104         select HAVE_EFFICIENT_UNALIGNED_ACCESS if !CPU_LITTLE_ENDIAN
105         select HAVE_KPROBES
106         select HAVE_ARCH_KGDB
107         select HAVE_KRETPROBES
108         select HAVE_ARCH_TRACEHOOK
109         select HAVE_MEMBLOCK
110         select HAVE_MEMBLOCK_NODE_MAP
111         select HAVE_DMA_ATTRS
112         select HAVE_DMA_API_DEBUG
113         select HAVE_OPROFILE
114         select HAVE_DEBUG_KMEMLEAK
115         select ARCH_HAS_SG_CHAIN
116         select GENERIC_ATOMIC64 if PPC32
117         select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
118         select HAVE_PERF_EVENTS
119         select HAVE_REGS_AND_STACK_ACCESS_API
120         select HAVE_HW_BREAKPOINT if PERF_EVENTS && PPC_BOOK3S_64
121         select ARCH_WANT_IPC_PARSE_VERSION
122         select SPARSE_IRQ
123         select IRQ_DOMAIN
124         select GENERIC_IRQ_SHOW
125         select GENERIC_IRQ_SHOW_LEVEL
126         select IRQ_FORCED_THREADING
127         select HAVE_RCU_TABLE_FREE if SMP
128         select HAVE_SYSCALL_TRACEPOINTS
129         select HAVE_BPF_JIT
130         select HAVE_ARCH_JUMP_LABEL
131         select ARCH_HAVE_NMI_SAFE_CMPXCHG
132         select ARCH_HAS_GCOV_PROFILE_ALL
133         select GENERIC_SMP_IDLE_THREAD
134         select GENERIC_CMOS_UPDATE
135         select GENERIC_TIME_VSYSCALL_OLD
136         select GENERIC_CLOCKEVENTS
137         select GENERIC_CLOCKEVENTS_BROADCAST if SMP
138         select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
139         select GENERIC_STRNCPY_FROM_USER
140         select GENERIC_STRNLEN_USER
141         select HAVE_MOD_ARCH_SPECIFIC
142         select MODULES_USE_ELF_RELA
143         select CLONE_BACKWARDS
144         select ARCH_USE_BUILTIN_BSWAP
145         select OLD_SIGSUSPEND
146         select OLD_SIGACTION if PPC32
147         select HAVE_DEBUG_STACKOVERFLOW
148         select HAVE_IRQ_EXIT_ON_IRQ_STACK
149         select ARCH_USE_CMPXCHG_LOCKREF if PPC64
150         select HAVE_ARCH_AUDITSYSCALL
151         select ARCH_SUPPORTS_ATOMIC_RMW
152         select DCACHE_WORD_ACCESS if PPC64 && CPU_LITTLE_ENDIAN
153         select NO_BOOTMEM
154         select HAVE_GENERIC_RCU_GUP
155         select HAVE_PERF_EVENTS_NMI if PPC64
156         select EDAC_SUPPORT
157         select EDAC_ATOMIC_SCRUB
158 
159 config GENERIC_CSUM
160         def_bool CPU_LITTLE_ENDIAN
161 
162 config EARLY_PRINTK
163         bool
164         default y
165 
166 config PANIC_TIMEOUT
167         int
168         default 180
169 
170 config COMPAT
171         bool
172         default y if PPC64
173         select COMPAT_BINFMT_ELF
174         select ARCH_WANT_OLD_COMPAT_IPC
175         select COMPAT_OLD_SIGACTION
176 
177 config SYSVIPC_COMPAT
178         bool
179         depends on COMPAT && SYSVIPC
180         default y
181 
182 # All PPC32s use generic nvram driver through ppc_md
183 config GENERIC_NVRAM
184         bool
185         default y if PPC32
186 
187 config SCHED_OMIT_FRAME_POINTER
188         bool
189         default y
190 
191 config ARCH_MAY_HAVE_PC_FDC
192         bool
193         default PCI
194 
195 config PPC_UDBG_16550
196         bool
197         default n
198 
199 config GENERIC_TBSYNC
200         bool
201         default y if PPC32 && SMP
202         default n
203 
204 config AUDIT_ARCH
205         bool
206         default y
207 
208 config GENERIC_BUG
209         bool
210         default y
211         depends on BUG
212 
213 config SYS_SUPPORTS_APM_EMULATION
214         default y if PMAC_APM_EMU
215         bool
216 
217 config EPAPR_BOOT
218         bool
219         help
220           Used to allow a board to specify it wants an ePAPR compliant wrapper.
221         default n
222 
223 config DEFAULT_UIMAGE
224         bool
225         help
226           Used to allow a board to specify it wants a uImage built by default
227         default n
228 
229 config ARCH_HIBERNATION_POSSIBLE
230         bool
231         default y
232 
233 config ARCH_SUSPEND_POSSIBLE
234         def_bool y
235         depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx || \
236                    (PPC_85xx && !PPC_E500MC) || PPC_86xx || PPC_PSERIES \
237                    || 44x || 40x
238 
239 config PPC_DCR_NATIVE
240         bool
241         default n
242 
243 config PPC_DCR_MMIO
244         bool
245         default n
246 
247 config PPC_DCR
248         bool
249         depends on PPC_DCR_NATIVE || PPC_DCR_MMIO
250         default y
251 
252 config PPC_OF_PLATFORM_PCI
253         bool
254         depends on PCI
255         depends on PPC64 # not supported on 32 bits yet
256         default n
257 
258 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
259         depends on PPC32 || PPC_STD_MMU_64
260         def_bool y
261 
262 config ARCH_SUPPORTS_UPROBES
263         def_bool y
264 
265 config PPC_ADV_DEBUG_REGS
266         bool
267         depends on 40x || BOOKE
268         default y
269 
270 config PPC_ADV_DEBUG_IACS
271         int
272         depends on PPC_ADV_DEBUG_REGS
273         default 4 if 44x
274         default 2
275 
276 config PPC_ADV_DEBUG_DACS
277         int
278         depends on PPC_ADV_DEBUG_REGS
279         default 2
280 
281 config PPC_ADV_DEBUG_DVCS
282         int
283         depends on PPC_ADV_DEBUG_REGS
284         default 2 if 44x
285         default 0
286 
287 config PPC_ADV_DEBUG_DAC_RANGE
288         bool
289         depends on PPC_ADV_DEBUG_REGS && 44x
290         default y
291 
292 config PPC_EMULATE_SSTEP
293         bool
294         default y if KPROBES || UPROBES || XMON || HAVE_HW_BREAKPOINT
295 
296 config ZONE_DMA32
297         bool
298         default y if PPC64
299 
300 config PGTABLE_LEVELS
301         int
302         default 2 if !PPC64
303         default 3 if PPC_64K_PAGES
304         default 4
305 
306 source "init/Kconfig"
307 
308 source "kernel/Kconfig.freezer"
309 
310 source "arch/powerpc/sysdev/Kconfig"
311 source "arch/powerpc/platforms/Kconfig"
312 
313 menu "Kernel options"
314 
315 config HIGHMEM
316         bool "High memory support"
317         depends on PPC32
318 
319 source kernel/Kconfig.hz
320 source kernel/Kconfig.preempt
321 source "fs/Kconfig.binfmt"
322 
323 config HUGETLB_PAGE_SIZE_VARIABLE
324         bool
325         depends on HUGETLB_PAGE
326         default y
327 
328 config MATH_EMULATION
329         bool "Math emulation"
330         depends on 4xx || 8xx || PPC_MPC832x || BOOKE
331         ---help---
332           Some PowerPC chips designed for embedded applications do not have
333           a floating-point unit and therefore do not implement the
334           floating-point instructions in the PowerPC instruction set.  If you
335           say Y here, the kernel will include code to emulate a floating-point
336           unit, which will allow programs that use floating-point
337           instructions to run.
338 
339           This is also useful to emulate missing (optional) instructions
340           such as fsqrt on cores that do have an FPU but do not implement
341           them (such as Freescale BookE).
342 
343 choice
344         prompt "Math emulation options"
345         default MATH_EMULATION_FULL
346         depends on MATH_EMULATION
347 
348 config  MATH_EMULATION_FULL
349         bool "Emulate all the floating point instructions"
350         ---help---
351           Select this option will enable the kernel to support to emulate
352           all the floating point instructions. If your SoC doesn't have
353           a FPU, you should select this.
354 
355 config MATH_EMULATION_HW_UNIMPLEMENTED
356         bool "Just emulate the FPU unimplemented instructions"
357         ---help---
358           Select this if you know there does have a hardware FPU on your
359           SoC, but some floating point instructions are not implemented by that.
360 
361 endchoice
362 
363 config PPC_TRANSACTIONAL_MEM
364        bool "Transactional Memory support for POWERPC"
365        depends on PPC_BOOK3S_64
366        depends on SMP
367        select ALTIVEC
368        select VSX
369        default n
370        ---help---
371          Support user-mode Transactional Memory on POWERPC.
372 
373 config IOMMU_HELPER
374         def_bool PPC64
375 
376 config SWIOTLB
377         bool "SWIOTLB support"
378         default n
379         select IOMMU_HELPER
380         ---help---
381           Support for IO bounce buffering for systems without an IOMMU.
382           This allows us to DMA to the full physical address space on
383           platforms where the size of a physical address is larger
384           than the bus address.  Not all platforms support this.
385 
386 config HOTPLUG_CPU
387         bool "Support for enabling/disabling CPUs"
388         depends on SMP && (PPC_PSERIES || \
389         PPC_PMAC || PPC_POWERNV || (PPC_85xx && !PPC_E500MC))
390         ---help---
391           Say Y here to be able to disable and re-enable individual
392           CPUs at runtime on SMP machines.
393 
394           Say N if you are unsure.
395 
396 config ARCH_CPU_PROBE_RELEASE
397         def_bool y
398         depends on HOTPLUG_CPU
399 
400 config ARCH_ENABLE_MEMORY_HOTPLUG
401         def_bool y
402 
403 config ARCH_HAS_WALK_MEMORY
404         def_bool y
405 
406 config ARCH_ENABLE_MEMORY_HOTREMOVE
407         def_bool y
408 
409 config PPC64_SUPPORTS_MEMORY_FAILURE
410         bool "Add support for memory hwpoison"
411         depends on PPC_BOOK3S_64
412         default "y" if PPC_POWERNV
413         select ARCH_SUPPORTS_MEMORY_FAILURE
414 
415 config KEXEC
416         bool "kexec system call"
417         depends on (PPC_BOOK3S || FSL_BOOKE || (44x && !SMP))
418         help
419           kexec is a system call that implements the ability to shutdown your
420           current kernel, and to start another kernel.  It is like a reboot
421           but it is independent of the system firmware.   And like a reboot
422           you can start any kernel with it, not just Linux.
423 
424           The name comes from the similarity to the exec system call.
425 
426           It is an ongoing process to be certain the hardware in a machine
427           is properly shutdown, so do not be surprised if this code does not
428           initially work for you.  As of this writing the exact hardware
429           interface is strongly in flux, so no good recommendation can be
430           made.
431 
432 config CRASH_DUMP
433         bool "Build a kdump crash kernel"
434         depends on PPC64 || 6xx || FSL_BOOKE || (44x && !SMP)
435         select RELOCATABLE if (PPC64 && !COMPILE_TEST) || 44x || FSL_BOOKE
436         help
437           Build a kernel suitable for use as a kdump capture kernel.
438           The same kernel binary can be used as production kernel and dump
439           capture kernel.
440 
441 config FA_DUMP
442         bool "Firmware-assisted dump"
443         depends on PPC64 && PPC_RTAS && CRASH_DUMP && KEXEC
444         help
445           A robust mechanism to get reliable kernel crash dump with
446           assistance from firmware. This approach does not use kexec,
447           instead firmware assists in booting the kdump kernel
448           while preserving memory contents. Firmware-assisted dump
449           is meant to be a kdump replacement offering robustness and
450           speed not possible without system firmware assistance.
451 
452           If unsure, say "N"
453 
454 config IRQ_ALL_CPUS
455         bool "Distribute interrupts on all CPUs by default"
456         depends on SMP
457         help
458           This option gives the kernel permission to distribute IRQs across
459           multiple CPUs.  Saying N here will route all IRQs to the first
460           CPU.  Generally saying Y is safe, although some problems have been
461           reported with SMP Power Macintoshes with this option enabled.
462 
463 config NUMA
464         bool "NUMA support"
465         depends on PPC64
466         default y if SMP && PPC_PSERIES
467 
468 config NODES_SHIFT
469         int
470         default "8" if PPC64
471         default "4"
472         depends on NEED_MULTIPLE_NODES
473 
474 config USE_PERCPU_NUMA_NODE_ID
475         def_bool y
476         depends on NUMA
477 
478 config HAVE_MEMORYLESS_NODES
479         def_bool y
480         depends on NUMA
481 
482 config ARCH_SELECT_MEMORY_MODEL
483         def_bool y
484         depends on PPC64
485 
486 config ARCH_FLATMEM_ENABLE
487         def_bool y
488         depends on (PPC64 && !NUMA) || PPC32
489 
490 config ARCH_SPARSEMEM_ENABLE
491         def_bool y
492         depends on PPC64
493         select SPARSEMEM_VMEMMAP_ENABLE
494 
495 config ARCH_SPARSEMEM_DEFAULT
496         def_bool y
497         depends on (SMP && PPC_PSERIES) || PPC_PS3
498 
499 config SYS_SUPPORTS_HUGETLBFS
500         bool
501 
502 source "mm/Kconfig"
503 
504 config ARCH_MEMORY_PROBE
505         def_bool y
506         depends on MEMORY_HOTPLUG
507 
508 # Some NUMA nodes have memory ranges that span
509 # other nodes.  Even though a pfn is valid and
510 # between a node's start and end pfns, it may not
511 # reside on that node.  See memmap_init_zone()
512 # for details.
513 config NODES_SPAN_OTHER_NODES
514         def_bool y
515         depends on NEED_MULTIPLE_NODES
516 
517 config PPC_HAS_HASH_64K
518         bool
519         depends on PPC64
520         default n
521 
522 config STDBINUTILS
523         bool "Using standard binutils settings"
524         depends on 44x
525         default y
526         help
527           Turning this option off allows you to select 256KB PAGE_SIZE on 44x.
528           Note, that kernel will be able to run only those applications,
529           which had been compiled using binutils later than 2.17.50.0.3 with
530           '-zmax-page-size' set to 256K (the default is 64K). Or, if using
531           the older binutils, you can patch them with a trivial patch, which
532           changes the ELF_MAXPAGESIZE definition from 0x10000 to 0x40000.
533 
534 choice
535         prompt "Page size"
536         default PPC_4K_PAGES
537         help
538           Select the kernel logical page size. Increasing the page size
539           will reduce software overhead at each page boundary, allow
540           hardware prefetch mechanisms to be more effective, and allow
541           larger dma transfers increasing IO efficiency and reducing
542           overhead. However the utilization of memory will increase.
543           For example, each cached file will using a multiple of the
544           page size to hold its contents and the difference between the
545           end of file and the end of page is wasted.
546 
547           Some dedicated systems, such as software raid serving with
548           accelerated calculations, have shown significant increases.
549 
550           If you configure a 64 bit kernel for 64k pages but the
551           processor does not support them, then the kernel will simulate
552           them with 4k pages, loading them on demand, but with the
553           reduced software overhead and larger internal fragmentation.
554           For the 32 bit kernel, a large page option will not be offered
555           unless it is supported by the configured processor.
556 
557           If unsure, choose 4K_PAGES.
558 
559 config PPC_4K_PAGES
560         bool "4k page size"
561 
562 config PPC_16K_PAGES
563         bool "16k page size" if 44x || PPC_8xx
564 
565 config PPC_64K_PAGES
566         bool "64k page size" if 44x || PPC_STD_MMU_64 || PPC_BOOK3E_64
567         depends on !PPC_FSL_BOOK3E
568         select PPC_HAS_HASH_64K if PPC_STD_MMU_64
569 
570 config PPC_256K_PAGES
571         bool "256k page size" if 44x
572         depends on !STDBINUTILS
573         help
574           Make the page size 256k.
575 
576           As the ELF standard only requires alignment to support page
577           sizes up to 64k, you will need to compile all of your user
578           space applications with a non-standard binutils settings
579           (see the STDBINUTILS description for details).
580 
581           Say N unless you know what you are doing.
582 
583 endchoice
584 
585 config FORCE_MAX_ZONEORDER
586         int "Maximum zone order"
587         range 9 64 if PPC64 && PPC_64K_PAGES
588         default "9" if PPC64 && PPC_64K_PAGES
589         range 13 64 if PPC64 && !PPC_64K_PAGES
590         default "13" if PPC64 && !PPC_64K_PAGES
591         range 9 64 if PPC32 && PPC_16K_PAGES
592         default "9" if PPC32 && PPC_16K_PAGES
593         range 7 64 if PPC32 && PPC_64K_PAGES
594         default "7" if PPC32 && PPC_64K_PAGES
595         range 5 64 if PPC32 && PPC_256K_PAGES
596         default "5" if PPC32 && PPC_256K_PAGES
597         range 11 64
598         default "11"
599         help
600           The kernel memory allocator divides physically contiguous memory
601           blocks into "zones", where each zone is a power of two number of
602           pages.  This option selects the largest power of two that the kernel
603           keeps in the memory allocator.  If you need to allocate very large
604           blocks of physically contiguous memory, then you may need to
605           increase this value.
606 
607           This config option is actually maximum order plus one. For example,
608           a value of 11 means that the largest free memory block is 2^10 pages.
609 
610           The page size is not necessarily 4KB.  For example, on 64-bit
611           systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES.  Keep
612           this in mind when choosing a value for this option.
613 
614 config PPC_SUBPAGE_PROT
615         bool "Support setting protections for 4k subpages"
616         depends on PPC_STD_MMU_64 && PPC_64K_PAGES
617         help
618           This option adds support for a system call to allow user programs
619           to set access permissions (read/write, readonly, or no access)
620           on the 4k subpages of each 64k page.
621 
622 config PPC_COPRO_BASE
623         bool
624         default n
625 
626 config SCHED_SMT
627         bool "SMT (Hyperthreading) scheduler support"
628         depends on PPC64 && SMP
629         help
630           SMT scheduler support improves the CPU scheduler's decision making
631           when dealing with POWER5 cpus at a cost of slightly increased
632           overhead in some places. If unsure say N here.
633 
634 config PPC_DENORMALISATION
635         bool "PowerPC denormalisation exception handling"
636         depends on PPC_BOOK3S_64
637         default "y" if PPC_POWERNV
638         ---help---
639           Add support for handling denormalisation of single precision
640           values.  Useful for bare metal only.  If unsure say Y here.
641 
642 config CMDLINE_BOOL
643         bool "Default bootloader kernel arguments"
644 
645 config CMDLINE
646         string "Initial kernel command string"
647         depends on CMDLINE_BOOL
648         default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
649         help
650           On some platforms, there is currently no way for the boot loader to
651           pass arguments to the kernel. For these platforms, you can supply
652           some command-line options at build time by entering them here.  In
653           most cases you will need to specify the root device here.
654 
655 config CMDLINE_FORCE
656         bool "Always use the default kernel command string"
657         depends on CMDLINE_BOOL
658         help
659           Always use the default kernel command string, even if the boot
660           loader passes other arguments to the kernel.
661           This is useful if you cannot or don't want to change the
662           command-line options your boot loader passes to the kernel.
663 
664 config EXTRA_TARGETS
665         string "Additional default image types"
666         help
667           List additional targets to be built by the bootwrapper here (separated
668           by spaces).  This is useful for targets that depend of device tree
669           files in the .dts directory.
670 
671           Targets in this list will be build as part of the default build
672           target, or when the user does a 'make zImage' or a
673           'make zImage.initrd'.
674 
675           If unsure, leave blank
676 
677 config ARCH_WANTS_FREEZER_CONTROL
678         def_bool y
679         depends on ADB_PMU
680 
681 source kernel/power/Kconfig
682 
683 config SECCOMP
684         bool "Enable seccomp to safely compute untrusted bytecode"
685         depends on PROC_FS
686         default y
687         help
688           This kernel feature is useful for number crunching applications
689           that may need to compute untrusted bytecode during their
690           execution. By using pipes or other transports made available to
691           the process as file descriptors supporting the read/write
692           syscalls, it's possible to isolate those applications in
693           their own address space using seccomp. Once seccomp is
694           enabled via /proc/<pid>/seccomp, it cannot be disabled
695           and the task is only allowed to execute a few safe syscalls
696           defined by each seccomp mode.
697 
698           If unsure, say Y. Only embedded should say N here.
699 
700 endmenu
701 
702 config ISA_DMA_API
703         bool
704         default PCI
705 
706 menu "Bus options"
707 
708 config ISA
709         bool "Support for ISA-bus hardware"
710         depends on PPC_CHRP
711         select PPC_I8259
712         help
713           Find out whether you have ISA slots on your motherboard.  ISA is the
714           name of a bus system, i.e. the way the CPU talks to the other stuff
715           inside your box.  If you have an Apple machine, say N here; if you
716           have an IBM RS/6000 or pSeries machine, say Y.  If you have an
717           embedded board, consult your board documentation.
718 
719 config ZONE_DMA
720         bool
721         default y
722 
723 config NEED_DMA_MAP_STATE
724         def_bool (PPC64 || NOT_COHERENT_CACHE)
725 
726 config NEED_SG_DMA_LENGTH
727         def_bool y
728 
729 config GENERIC_ISA_DMA
730         bool
731         depends on ISA_DMA_API
732         default y
733 
734 config PPC_INDIRECT_PCI
735         bool
736         depends on PCI
737         default y if 40x || 44x
738         default n
739 
740 config EISA
741         bool
742 
743 config SBUS
744         bool
745 
746 config FSL_SOC
747         bool
748 
749 config FSL_PCI
750         bool
751         select PPC_INDIRECT_PCI
752         select PCI_QUIRKS
753 
754 config FSL_PMC
755         bool
756         default y
757         depends on SUSPEND && (PPC_85xx || PPC_86xx)
758         help
759           Freescale MPC85xx/MPC86xx power management controller support
760           (suspend/resume). For MPC83xx see platforms/83xx/suspend.c
761 
762 config PPC4xx_CPM
763         bool
764         default y
765         depends on SUSPEND && (44x || 40x)
766         help
767           PPC4xx Clock Power Management (CPM) support (suspend/resume).
768           It also enables support for two different idle states (idle-wait
769           and idle-doze).
770 
771 config 4xx_SOC
772         bool
773 
774 config FSL_LBC
775         bool "Freescale Local Bus support"
776         depends on FSL_SOC
777         help
778           Enables reporting of errors from the Freescale local bus
779           controller.  Also contains some common code used by
780           drivers for specific local bus peripherals.
781 
782 config FSL_GTM
783         bool
784         depends on PPC_83xx || QUICC_ENGINE || CPM2
785         help
786           Freescale General-purpose Timers support
787 
788 # Yes MCA RS/6000s exist but Linux-PPC does not currently support any
789 config MCA
790         bool
791 
792 # Platforms that what PCI turned unconditionally just do select PCI
793 # in their config node.  Platforms that want to choose at config
794 # time should select PPC_PCI_CHOICE
795 config PPC_PCI_CHOICE
796         bool
797 
798 config PCI
799         bool "PCI support" if PPC_PCI_CHOICE
800         default y if !40x && !CPM2 && !8xx && !PPC_83xx \
801                 && !PPC_85xx && !PPC_86xx && !GAMECUBE_COMMON
802         default PCI_QSPAN if !4xx && !CPM2 && 8xx
803         select GENERIC_PCI_IOMAP
804         help
805           Find out whether your system includes a PCI bus. PCI is the name of
806           a bus system, i.e. the way the CPU talks to the other stuff inside
807           your box.  If you say Y here, the kernel will include drivers and
808           infrastructure code to support PCI bus devices.
809 
810 config PCI_DOMAINS
811         def_bool PCI
812 
813 config PCI_SYSCALL
814         def_bool PCI
815 
816 config PCI_QSPAN
817         bool "QSpan PCI"
818         depends on !4xx && !CPM2 && 8xx
819         select PPC_I8259
820         help
821           Say Y here if you have a system based on a Motorola 8xx-series
822           embedded processor with a QSPAN PCI interface, otherwise say N.
823 
824 config PCI_8260
825         bool
826         depends on PCI && 8260
827         select PPC_INDIRECT_PCI
828         default y
829 
830 source "drivers/pci/pcie/Kconfig"
831 
832 source "drivers/pci/Kconfig"
833 
834 source "drivers/pcmcia/Kconfig"
835 
836 source "drivers/pci/hotplug/Kconfig"
837 
838 config HAS_RAPIDIO
839         bool
840         default n
841 
842 config RAPIDIO
843         tristate "RapidIO support"
844         depends on HAS_RAPIDIO || PCI
845         help
846           If you say Y here, the kernel will include drivers and
847           infrastructure code to support RapidIO interconnect devices.
848 
849 config FSL_RIO
850         bool "Freescale Embedded SRIO Controller support"
851         depends on RAPIDIO = y && HAS_RAPIDIO
852         default "n"
853         ---help---
854           Include support for RapidIO controller on Freescale embedded
855           processors (MPC8548, MPC8641, etc).
856 
857 source "drivers/rapidio/Kconfig"
858 
859 endmenu
860 
861 config NONSTATIC_KERNEL
862         bool
863         default n
864 
865 menu "Advanced setup"
866         depends on PPC32
867 
868 config ADVANCED_OPTIONS
869         bool "Prompt for advanced kernel configuration options"
870         help
871           This option will enable prompting for a variety of advanced kernel
872           configuration options.  These options can cause the kernel to not
873           work if they are set incorrectly, but can be used to optimize certain
874           aspects of kernel memory management.
875 
876           Unless you know what you are doing, say N here.
877 
878 comment "Default settings for advanced configuration options are used"
879         depends on !ADVANCED_OPTIONS
880 
881 config LOWMEM_SIZE_BOOL
882         bool "Set maximum low memory"
883         depends on ADVANCED_OPTIONS
884         help
885           This option allows you to set the maximum amount of memory which
886           will be used as "low memory", that is, memory which the kernel can
887           access directly, without having to set up a kernel virtual mapping.
888           This can be useful in optimizing the layout of kernel virtual
889           memory.
890 
891           Say N here unless you know what you are doing.
892 
893 config LOWMEM_SIZE
894         hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
895         default "0x30000000"
896 
897 config LOWMEM_CAM_NUM_BOOL
898         bool "Set number of CAMs to use to map low memory"
899         depends on ADVANCED_OPTIONS && FSL_BOOKE
900         help
901           This option allows you to set the maximum number of CAM slots that
902           will be used to map low memory.  There are a limited number of slots
903           available and even more limited number that will fit in the L1 MMU.
904           However, using more entries will allow mapping more low memory.  This
905           can be useful in optimizing the layout of kernel virtual memory.
906 
907           Say N here unless you know what you are doing.
908 
909 config LOWMEM_CAM_NUM
910         depends on FSL_BOOKE
911         int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL
912         default 3
913 
914 config DYNAMIC_MEMSTART
915         bool "Enable page aligned dynamic load address for kernel"
916         depends on ADVANCED_OPTIONS && FLATMEM && (FSL_BOOKE || 44x)
917         select NONSTATIC_KERNEL
918         help
919           This option enables the kernel to be loaded at any page aligned
920           physical address. The kernel creates a mapping from KERNELBASE to 
921           the address where the kernel is loaded. The page size here implies
922           the TLB page size of the mapping for kernel on the particular platform.
923           Please refer to the init code for finding the TLB page size.
924 
925           DYNAMIC_MEMSTART is an easy way of implementing pseudo-RELOCATABLE
926           kernel image, where the only restriction is the page aligned kernel
927           load address. When this option is enabled, the compile time physical 
928           address CONFIG_PHYSICAL_START is ignored.
929 
930           This option is overridden by CONFIG_RELOCATABLE
931 
932 config RELOCATABLE
933         bool "Build a relocatable kernel"
934         depends on ADVANCED_OPTIONS && FLATMEM && (44x || FSL_BOOKE)
935         select NONSTATIC_KERNEL
936         help
937           This builds a kernel image that is capable of running at the
938           location the kernel is loaded at, without any alignment restrictions.
939           This feature is a superset of DYNAMIC_MEMSTART and hence overrides it.
940 
941           One use is for the kexec on panic case where the recovery kernel
942           must live at a different physical address than the primary
943           kernel.
944 
945           Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address
946           it has been loaded at and the compile time physical addresses
947           CONFIG_PHYSICAL_START is ignored.  However CONFIG_PHYSICAL_START
948           setting can still be useful to bootwrappers that need to know the
949           load address of the kernel (eg. u-boot/mkimage).
950 
951 config RELOCATABLE_PPC32
952         def_bool y
953         depends on PPC32 && RELOCATABLE
954 
955 config PAGE_OFFSET_BOOL
956         bool "Set custom page offset address"
957         depends on ADVANCED_OPTIONS
958         help
959           This option allows you to set the kernel virtual address at which
960           the kernel will map low memory.  This can be useful in optimizing
961           the virtual memory layout of the system.
962 
963           Say N here unless you know what you are doing.
964 
965 config PAGE_OFFSET
966         hex "Virtual address of memory base" if PAGE_OFFSET_BOOL
967         default "0xc0000000"
968 
969 config KERNEL_START_BOOL
970         bool "Set custom kernel base address"
971         depends on ADVANCED_OPTIONS
972         help
973           This option allows you to set the kernel virtual address at which
974           the kernel will be loaded.  Normally this should match PAGE_OFFSET
975           however there are times (like kdump) that one might not want them
976           to be the same.
977 
978           Say N here unless you know what you are doing.
979 
980 config KERNEL_START
981         hex "Virtual address of kernel base" if KERNEL_START_BOOL
982         default PAGE_OFFSET if PAGE_OFFSET_BOOL
983         default "0xc2000000" if CRASH_DUMP && !NONSTATIC_KERNEL
984         default "0xc0000000"
985 
986 config PHYSICAL_START_BOOL
987         bool "Set physical address where the kernel is loaded"
988         depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE
989         help
990           This gives the physical address where the kernel is loaded.
991 
992           Say N here unless you know what you are doing.
993 
994 config PHYSICAL_START
995         hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL
996         default "0x02000000" if PPC_STD_MMU && CRASH_DUMP && !NONSTATIC_KERNEL
997         default "0x00000000"
998 
999 config PHYSICAL_ALIGN
1000         hex
1001         default "0x04000000" if FSL_BOOKE
1002         help
1003           This value puts the alignment restrictions on physical address
1004           where kernel is loaded and run from. Kernel is compiled for an
1005           address which meets above alignment restriction.
1006 
1007 config TASK_SIZE_BOOL
1008         bool "Set custom user task size"
1009         depends on ADVANCED_OPTIONS
1010         help
1011           This option allows you to set the amount of virtual address space
1012           allocated to user tasks.  This can be useful in optimizing the
1013           virtual memory layout of the system.
1014 
1015           Say N here unless you know what you are doing.
1016 
1017 config TASK_SIZE
1018         hex "Size of user task space" if TASK_SIZE_BOOL
1019         default "0x80000000" if PPC_8xx
1020         default "0xc0000000"
1021 
1022 config CONSISTENT_SIZE_BOOL
1023         bool "Set custom consistent memory pool size"
1024         depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
1025         help
1026           This option allows you to set the size of the
1027           consistent memory pool.  This pool of virtual memory
1028           is used to make consistent memory allocations.
1029 
1030 config CONSISTENT_SIZE
1031         hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
1032         default "0x00200000" if NOT_COHERENT_CACHE
1033 
1034 config PIN_TLB
1035         bool "Pinned Kernel TLBs (860 ONLY)"
1036         depends on ADVANCED_OPTIONS && 8xx
1037 endmenu
1038 
1039 if PPC64
1040 config RELOCATABLE
1041         bool "Build a relocatable kernel"
1042         depends on !COMPILE_TEST
1043         select NONSTATIC_KERNEL
1044         help
1045           This builds a kernel image that is capable of running anywhere
1046           in the RMA (real memory area) at any 16k-aligned base address.
1047           The kernel is linked as a position-independent executable (PIE)
1048           and contains dynamic relocations which are processed early
1049           in the bootup process.
1050 
1051           One use is for the kexec on panic case where the recovery kernel
1052           must live at a different physical address than the primary
1053           kernel.
1054 
1055 # This value must have zeroes in the bottom 60 bits otherwise lots will break
1056 config PAGE_OFFSET
1057         hex
1058         default "0xc000000000000000"
1059 config KERNEL_START
1060         hex
1061         default "0xc000000000000000"
1062 config PHYSICAL_START
1063         hex
1064         default "0x00000000"
1065 endif
1066 
1067 config  ARCH_RANDOM
1068         def_bool n
1069 
1070 source "net/Kconfig"
1071 
1072 source "drivers/Kconfig"
1073 
1074 source "fs/Kconfig"
1075 
1076 source "arch/powerpc/sysdev/qe_lib/Kconfig"
1077 
1078 source "lib/Kconfig"
1079 
1080 source "arch/powerpc/Kconfig.debug"
1081 
1082 source "security/Kconfig"
1083 
1084 config KEYS_COMPAT
1085         bool
1086         depends on COMPAT && KEYS
1087         default y
1088 
1089 source "crypto/Kconfig"
1090 
1091 config PPC_LIB_RHEAP
1092         bool
1093 
1094 source "arch/powerpc/kvm/Kconfig"

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