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

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