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

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