Version:  2.0.40 2.2.26 2.4.37 2.6.39 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.14 3.15

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

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