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Linux/arch/powerpc/Kconfig

  1 source "arch/powerpc/platforms/Kconfig.cputype"
  2 
  3 config PPC32
  4         bool
  5         default y if !PPC64
  6 
  7 config 32BIT
  8         bool
  9         default y if PPC32
 10 
 11 config 64BIT
 12         bool
 13         default y if PPC64
 14 
 15 config WORD_SIZE
 16         int
 17         default 64 if PPC64
 18         default 32 if !PPC64
 19 
 20 config ARCH_PHYS_ADDR_T_64BIT
 21        def_bool PPC64 || PHYS_64BIT
 22 
 23 config ARCH_DMA_ADDR_T_64BIT
 24         def_bool ARCH_PHYS_ADDR_T_64BIT
 25 
 26 config MMU
 27         bool
 28         default y
 29 
 30 config HAVE_SETUP_PER_CPU_AREA
 31         def_bool PPC64
 32 
 33 config NEED_PER_CPU_EMBED_FIRST_CHUNK
 34         def_bool PPC64
 35 
 36 config NR_IRQS
 37         int "Number of virtual interrupt numbers"
 38         range 32 32768
 39         default "512"
 40         help
 41           This defines the number of virtual interrupt numbers the kernel
 42           can manage. Virtual interrupt numbers are what you see in
 43           /proc/interrupts. If you configure your system to have too few,
 44           drivers will fail to load or worse - handle with care.
 45 
 46 config STACKTRACE_SUPPORT
 47         bool
 48         default y
 49 
 50 config HAVE_LATENCYTOP_SUPPORT
 51         def_bool y
 52 
 53 config TRACE_IRQFLAGS_SUPPORT
 54         bool
 55         default y
 56 
 57 config LOCKDEP_SUPPORT
 58         bool
 59         default y
 60 
 61 config RWSEM_GENERIC_SPINLOCK
 62         bool
 63 
 64 config RWSEM_XCHGADD_ALGORITHM
 65         bool
 66         default y
 67 
 68 config GENERIC_LOCKBREAK
 69         bool
 70         default y
 71         depends on SMP && PREEMPT
 72 
 73 config ARCH_HAS_ILOG2_U32
 74         bool
 75         default y
 76 
 77 config ARCH_HAS_ILOG2_U64
 78         bool
 79         default y if 64BIT
 80 
 81 config GENERIC_HWEIGHT
 82         bool
 83         default y
 84 
 85 config PPC
 86         bool
 87         default y
 88         select ARCH_MIGHT_HAVE_PC_PARPORT
 89         select ARCH_MIGHT_HAVE_PC_SERIO
 90         select BINFMT_ELF
 91         select ARCH_BINFMT_ELF_RANDOMIZE_PIE
 92         select OF
 93         select OF_EARLY_FLATTREE
 94         select OF_RESERVED_MEM
 95         select HAVE_FTRACE_MCOUNT_RECORD
 96         select HAVE_DYNAMIC_FTRACE
 97         select HAVE_FUNCTION_TRACER
 98         select HAVE_FUNCTION_GRAPH_TRACER
 99         select SYSCTL_EXCEPTION_TRACE
100         select ARCH_WANT_OPTIONAL_GPIOLIB
101         select VIRT_TO_BUS if !PPC64
102         select HAVE_IDE
103         select HAVE_IOREMAP_PROT
104         select HAVE_EFFICIENT_UNALIGNED_ACCESS if !CPU_LITTLE_ENDIAN
105         select HAVE_KPROBES
106         select HAVE_ARCH_KGDB
107         select HAVE_KRETPROBES
108         select HAVE_ARCH_TRACEHOOK
109         select HAVE_MEMBLOCK
110         select HAVE_MEMBLOCK_NODE_MAP
111         select HAVE_DMA_ATTRS
112         select HAVE_DMA_API_DEBUG
113         select HAVE_OPROFILE
114         select HAVE_DEBUG_KMEMLEAK
115         select ARCH_HAS_SG_CHAIN
116         select GENERIC_ATOMIC64 if PPC32
117         select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
118         select HAVE_PERF_EVENTS
119         select HAVE_REGS_AND_STACK_ACCESS_API
120         select HAVE_HW_BREAKPOINT if PERF_EVENTS && PPC_BOOK3S_64
121         select ARCH_WANT_IPC_PARSE_VERSION
122         select SPARSE_IRQ
123         select IRQ_DOMAIN
124         select GENERIC_IRQ_SHOW
125         select GENERIC_IRQ_SHOW_LEVEL
126         select IRQ_FORCED_THREADING
127         select HAVE_RCU_TABLE_FREE if SMP
128         select HAVE_SYSCALL_TRACEPOINTS
129         select HAVE_BPF_JIT if PPC64
130         select HAVE_ARCH_JUMP_LABEL
131         select ARCH_HAVE_NMI_SAFE_CMPXCHG
132         select ARCH_HAS_GCOV_PROFILE_ALL
133         select GENERIC_SMP_IDLE_THREAD
134         select GENERIC_CMOS_UPDATE
135         select GENERIC_TIME_VSYSCALL_OLD
136         select GENERIC_CLOCKEVENTS
137         select GENERIC_CLOCKEVENTS_BROADCAST if SMP
138         select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
139         select GENERIC_STRNCPY_FROM_USER
140         select GENERIC_STRNLEN_USER
141         select HAVE_MOD_ARCH_SPECIFIC
142         select MODULES_USE_ELF_RELA
143         select CLONE_BACKWARDS
144         select ARCH_USE_BUILTIN_BSWAP
145         select OLD_SIGSUSPEND
146         select OLD_SIGACTION if PPC32
147         select HAVE_DEBUG_STACKOVERFLOW
148         select HAVE_IRQ_EXIT_ON_IRQ_STACK
149         select ARCH_USE_CMPXCHG_LOCKREF if PPC64
150         select HAVE_ARCH_AUDITSYSCALL
151         select ARCH_SUPPORTS_ATOMIC_RMW
152         select DCACHE_WORD_ACCESS if PPC64 && CPU_LITTLE_ENDIAN
153         select NO_BOOTMEM
154         select HAVE_GENERIC_RCU_GUP
155 
156 config GENERIC_CSUM
157         def_bool CPU_LITTLE_ENDIAN
158 
159 config EARLY_PRINTK
160         bool
161         default y
162 
163 config PANIC_TIMEOUT
164         int
165         default 180
166 
167 config COMPAT
168         bool
169         default y if PPC64
170         select COMPAT_BINFMT_ELF
171         select ARCH_WANT_OLD_COMPAT_IPC
172         select COMPAT_OLD_SIGACTION
173 
174 config SYSVIPC_COMPAT
175         bool
176         depends on COMPAT && SYSVIPC
177         default y
178 
179 # All PPC32s use generic nvram driver through ppc_md
180 config GENERIC_NVRAM
181         bool
182         default y if PPC32
183 
184 config SCHED_OMIT_FRAME_POINTER
185         bool
186         default y
187 
188 config ARCH_MAY_HAVE_PC_FDC
189         bool
190         default PCI
191 
192 config PPC_OF
193         def_bool y
194 
195 config PPC_UDBG_16550
196         bool
197         default n
198 
199 config GENERIC_TBSYNC
200         bool
201         default y if PPC32 && SMP
202         default n
203 
204 config AUDIT_ARCH
205         bool
206         default y
207 
208 config GENERIC_BUG
209         bool
210         default y
211         depends on BUG
212 
213 config SYS_SUPPORTS_APM_EMULATION
214         default y if PMAC_APM_EMU
215         bool
216 
217 config EPAPR_BOOT
218         bool
219         help
220           Used to allow a board to specify it wants an ePAPR compliant wrapper.
221         default n
222 
223 config DEFAULT_UIMAGE
224         bool
225         help
226           Used to allow a board to specify it wants a uImage built by default
227         default n
228 
229 config ARCH_HIBERNATION_POSSIBLE
230         bool
231         default y
232 
233 config ARCH_SUSPEND_POSSIBLE
234         def_bool y
235         depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx || \
236                    (PPC_85xx && !PPC_E500MC) || PPC_86xx || PPC_PSERIES \
237                    || 44x || 40x
238 
239 config PPC_DCR_NATIVE
240         bool
241         default n
242 
243 config PPC_DCR_MMIO
244         bool
245         default n
246 
247 config PPC_DCR
248         bool
249         depends on PPC_DCR_NATIVE || PPC_DCR_MMIO
250         default y
251 
252 config PPC_OF_PLATFORM_PCI
253         bool
254         depends on PCI
255         depends on PPC64 # not supported on 32 bits yet
256         default n
257 
258 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
259         depends on PPC32 || PPC_STD_MMU_64
260         def_bool y
261 
262 config ARCH_SUPPORTS_UPROBES
263         def_bool y
264 
265 config PPC_ADV_DEBUG_REGS
266         bool
267         depends on 40x || BOOKE
268         default y
269 
270 config PPC_ADV_DEBUG_IACS
271         int
272         depends on PPC_ADV_DEBUG_REGS
273         default 4 if 44x
274         default 2
275 
276 config PPC_ADV_DEBUG_DACS
277         int
278         depends on PPC_ADV_DEBUG_REGS
279         default 2
280 
281 config PPC_ADV_DEBUG_DVCS
282         int
283         depends on PPC_ADV_DEBUG_REGS
284         default 2 if 44x
285         default 0
286 
287 config PPC_ADV_DEBUG_DAC_RANGE
288         bool
289         depends on PPC_ADV_DEBUG_REGS && 44x
290         default y
291 
292 config PPC_EMULATE_SSTEP
293         bool
294         default y if KPROBES || UPROBES || XMON || HAVE_HW_BREAKPOINT
295 
296 config ZONE_DMA32
297         bool
298         default y if PPC64
299 
300 source "init/Kconfig"
301 
302 source "kernel/Kconfig.freezer"
303 
304 source "arch/powerpc/sysdev/Kconfig"
305 source "arch/powerpc/platforms/Kconfig"
306 
307 menu "Kernel options"
308 
309 config HIGHMEM
310         bool "High memory support"
311         depends on PPC32
312 
313 source kernel/Kconfig.hz
314 source kernel/Kconfig.preempt
315 source "fs/Kconfig.binfmt"
316 
317 config HUGETLB_PAGE_SIZE_VARIABLE
318         bool
319         depends on HUGETLB_PAGE
320         default y
321 
322 config MATH_EMULATION
323         bool "Math emulation"
324         depends on 4xx || 8xx || PPC_MPC832x || BOOKE
325         ---help---
326           Some PowerPC chips designed for embedded applications do not have
327           a floating-point unit and therefore do not implement the
328           floating-point instructions in the PowerPC instruction set.  If you
329           say Y here, the kernel will include code to emulate a floating-point
330           unit, which will allow programs that use floating-point
331           instructions to run.
332 
333           This is also useful to emulate missing (optional) instructions
334           such as fsqrt on cores that do have an FPU but do not implement
335           them (such as Freescale BookE).
336 
337 choice
338         prompt "Math emulation options"
339         default MATH_EMULATION_FULL
340         depends on MATH_EMULATION
341 
342 config  MATH_EMULATION_FULL
343         bool "Emulate all the floating point instructions"
344         ---help---
345           Select this option will enable the kernel to support to emulate
346           all the floating point instructions. If your SoC doesn't have
347           a FPU, you should select this.
348 
349 config MATH_EMULATION_HW_UNIMPLEMENTED
350         bool "Just emulate the FPU unimplemented instructions"
351         ---help---
352           Select this if you know there does have a hardware FPU on your
353           SoC, but some floating point instructions are not implemented by that.
354 
355 endchoice
356 
357 config PPC_TRANSACTIONAL_MEM
358        bool "Transactional Memory support for POWERPC"
359        depends on PPC_BOOK3S_64
360        depends on SMP
361        select ALTIVEC
362        select VSX
363        default n
364        ---help---
365          Support user-mode Transactional Memory on POWERPC.
366 
367 config IOMMU_HELPER
368         def_bool PPC64
369 
370 config SWIOTLB
371         bool "SWIOTLB support"
372         default n
373         select IOMMU_HELPER
374         ---help---
375           Support for IO bounce buffering for systems without an IOMMU.
376           This allows us to DMA to the full physical address space on
377           platforms where the size of a physical address is larger
378           than the bus address.  Not all platforms support this.
379 
380 config HOTPLUG_CPU
381         bool "Support for enabling/disabling CPUs"
382         depends on SMP && (PPC_PSERIES || \
383         PPC_PMAC || PPC_POWERNV || (PPC_85xx && !PPC_E500MC))
384         ---help---
385           Say Y here to be able to disable and re-enable individual
386           CPUs at runtime on SMP machines.
387 
388           Say N if you are unsure.
389 
390 config ARCH_CPU_PROBE_RELEASE
391         def_bool y
392         depends on HOTPLUG_CPU
393 
394 config ARCH_ENABLE_MEMORY_HOTPLUG
395         def_bool y
396 
397 config ARCH_HAS_WALK_MEMORY
398         def_bool y
399 
400 config ARCH_ENABLE_MEMORY_HOTREMOVE
401         def_bool y
402 
403 config PPC64_SUPPORTS_MEMORY_FAILURE
404         bool "Add support for memory hwpoison"
405         depends on PPC_BOOK3S_64
406         default "y" if PPC_POWERNV
407         select ARCH_SUPPORTS_MEMORY_FAILURE
408 
409 config KEXEC
410         bool "kexec system call"
411         depends on (PPC_BOOK3S || FSL_BOOKE || (44x && !SMP))
412         help
413           kexec is a system call that implements the ability to shutdown your
414           current kernel, and to start another kernel.  It is like a reboot
415           but it is independent of the system firmware.   And like a reboot
416           you can start any kernel with it, not just Linux.
417 
418           The name comes from the similarity to the exec system call.
419 
420           It is an ongoing process to be certain the hardware in a machine
421           is properly shutdown, so do not be surprised if this code does not
422           initially work for you.  As of this writing the exact hardware
423           interface is strongly in flux, so no good recommendation can be
424           made.
425 
426 config CRASH_DUMP
427         bool "Build a kdump crash kernel"
428         depends on PPC64 || 6xx || FSL_BOOKE || (44x && !SMP)
429         select RELOCATABLE if (PPC64 && !COMPILE_TEST) || 44x || FSL_BOOKE
430         help
431           Build a kernel suitable for use as a kdump capture kernel.
432           The same kernel binary can be used as production kernel and dump
433           capture kernel.
434 
435 config FA_DUMP
436         bool "Firmware-assisted dump"
437         depends on PPC64 && PPC_RTAS && CRASH_DUMP && KEXEC
438         help
439           A robust mechanism to get reliable kernel crash dump with
440           assistance from firmware. This approach does not use kexec,
441           instead firmware assists in booting the kdump kernel
442           while preserving memory contents. Firmware-assisted dump
443           is meant to be a kdump replacement offering robustness and
444           speed not possible without system firmware assistance.
445 
446           If unsure, say "N"
447 
448 config IRQ_ALL_CPUS
449         bool "Distribute interrupts on all CPUs by default"
450         depends on SMP
451         help
452           This option gives the kernel permission to distribute IRQs across
453           multiple CPUs.  Saying N here will route all IRQs to the first
454           CPU.  Generally saying Y is safe, although some problems have been
455           reported with SMP Power Macintoshes with this option enabled.
456 
457 config NUMA
458         bool "NUMA support"
459         depends on PPC64
460         default y if SMP && PPC_PSERIES
461 
462 config NODES_SHIFT
463         int
464         default "8" if PPC64
465         default "4"
466         depends on NEED_MULTIPLE_NODES
467 
468 config USE_PERCPU_NUMA_NODE_ID
469         def_bool y
470         depends on NUMA
471 
472 config HAVE_MEMORYLESS_NODES
473         def_bool y
474         depends on NUMA
475 
476 config ARCH_SELECT_MEMORY_MODEL
477         def_bool y
478         depends on PPC64
479 
480 config ARCH_FLATMEM_ENABLE
481         def_bool y
482         depends on (PPC64 && !NUMA) || PPC32
483 
484 config ARCH_SPARSEMEM_ENABLE
485         def_bool y
486         depends on PPC64
487         select SPARSEMEM_VMEMMAP_ENABLE
488 
489 config ARCH_SPARSEMEM_DEFAULT
490         def_bool y
491         depends on (SMP && PPC_PSERIES) || PPC_PS3
492 
493 config SYS_SUPPORTS_HUGETLBFS
494         bool
495 
496 source "mm/Kconfig"
497 
498 config ARCH_MEMORY_PROBE
499         def_bool y
500         depends on MEMORY_HOTPLUG
501 
502 # Some NUMA nodes have memory ranges that span
503 # other nodes.  Even though a pfn is valid and
504 # between a node's start and end pfns, it may not
505 # reside on that node.  See memmap_init_zone()
506 # for details.
507 config NODES_SPAN_OTHER_NODES
508         def_bool y
509         depends on NEED_MULTIPLE_NODES
510 
511 config PPC_HAS_HASH_64K
512         bool
513         depends on PPC64
514         default n
515 
516 config STDBINUTILS
517         bool "Using standard binutils settings"
518         depends on 44x
519         default y
520         help
521           Turning this option off allows you to select 256KB PAGE_SIZE on 44x.
522           Note, that kernel will be able to run only those applications,
523           which had been compiled using binutils later than 2.17.50.0.3 with
524           '-zmax-page-size' set to 256K (the default is 64K). Or, if using
525           the older binutils, you can patch them with a trivial patch, which
526           changes the ELF_MAXPAGESIZE definition from 0x10000 to 0x40000.
527 
528 choice
529         prompt "Page size"
530         default PPC_4K_PAGES
531         help
532           Select the kernel logical page size. Increasing the page size
533           will reduce software overhead at each page boundary, allow
534           hardware prefetch mechanisms to be more effective, and allow
535           larger dma transfers increasing IO efficiency and reducing
536           overhead. However the utilization of memory will increase.
537           For example, each cached file will using a multiple of the
538           page size to hold its contents and the difference between the
539           end of file and the end of page is wasted.
540 
541           Some dedicated systems, such as software raid serving with
542           accelerated calculations, have shown significant increases.
543 
544           If you configure a 64 bit kernel for 64k pages but the
545           processor does not support them, then the kernel will simulate
546           them with 4k pages, loading them on demand, but with the
547           reduced software overhead and larger internal fragmentation.
548           For the 32 bit kernel, a large page option will not be offered
549           unless it is supported by the configured processor.
550 
551           If unsure, choose 4K_PAGES.
552 
553 config PPC_4K_PAGES
554         bool "4k page size"
555 
556 config PPC_16K_PAGES
557         bool "16k page size" if 44x || PPC_8xx
558 
559 config PPC_64K_PAGES
560         bool "64k page size" if 44x || PPC_STD_MMU_64 || PPC_BOOK3E_64
561         depends on !PPC_FSL_BOOK3E
562         select PPC_HAS_HASH_64K if PPC_STD_MMU_64
563 
564 config PPC_256K_PAGES
565         bool "256k page size" if 44x
566         depends on !STDBINUTILS
567         help
568           Make the page size 256k.
569 
570           As the ELF standard only requires alignment to support page
571           sizes up to 64k, you will need to compile all of your user
572           space applications with a non-standard binutils settings
573           (see the STDBINUTILS description for details).
574 
575           Say N unless you know what you are doing.
576 
577 endchoice
578 
579 config FORCE_MAX_ZONEORDER
580         int "Maximum zone order"
581         range 9 64 if PPC64 && PPC_64K_PAGES
582         default "9" if PPC64 && PPC_64K_PAGES
583         range 13 64 if PPC64 && !PPC_64K_PAGES
584         default "13" if PPC64 && !PPC_64K_PAGES
585         range 9 64 if PPC32 && PPC_16K_PAGES
586         default "9" if PPC32 && PPC_16K_PAGES
587         range 7 64 if PPC32 && PPC_64K_PAGES
588         default "7" if PPC32 && PPC_64K_PAGES
589         range 5 64 if PPC32 && PPC_256K_PAGES
590         default "5" if PPC32 && PPC_256K_PAGES
591         range 11 64
592         default "11"
593         help
594           The kernel memory allocator divides physically contiguous memory
595           blocks into "zones", where each zone is a power of two number of
596           pages.  This option selects the largest power of two that the kernel
597           keeps in the memory allocator.  If you need to allocate very large
598           blocks of physically contiguous memory, then you may need to
599           increase this value.
600 
601           This config option is actually maximum order plus one. For example,
602           a value of 11 means that the largest free memory block is 2^10 pages.
603 
604           The page size is not necessarily 4KB.  For example, on 64-bit
605           systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES.  Keep
606           this in mind when choosing a value for this option.
607 
608 config PPC_SUBPAGE_PROT
609         bool "Support setting protections for 4k subpages"
610         depends on PPC_STD_MMU_64 && PPC_64K_PAGES
611         help
612           This option adds support for a system call to allow user programs
613           to set access permissions (read/write, readonly, or no access)
614           on the 4k subpages of each 64k page.
615 
616 config PPC_COPRO_BASE
617         bool
618         default n
619 
620 config SCHED_SMT
621         bool "SMT (Hyperthreading) scheduler support"
622         depends on PPC64 && SMP
623         help
624           SMT scheduler support improves the CPU scheduler's decision making
625           when dealing with POWER5 cpus at a cost of slightly increased
626           overhead in some places. If unsure say N here.
627 
628 config PPC_DENORMALISATION
629         bool "PowerPC denormalisation exception handling"
630         depends on PPC_BOOK3S_64
631         default "y" if PPC_POWERNV
632         ---help---
633           Add support for handling denormalisation of single precision
634           values.  Useful for bare metal only.  If unsure say Y here.
635 
636 config CMDLINE_BOOL
637         bool "Default bootloader kernel arguments"
638 
639 config CMDLINE
640         string "Initial kernel command string"
641         depends on CMDLINE_BOOL
642         default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
643         help
644           On some platforms, there is currently no way for the boot loader to
645           pass arguments to the kernel. For these platforms, you can supply
646           some command-line options at build time by entering them here.  In
647           most cases you will need to specify the root device here.
648 
649 config CMDLINE_FORCE
650         bool "Always use the default kernel command string"
651         depends on CMDLINE_BOOL
652         help
653           Always use the default kernel command string, even if the boot
654           loader passes other arguments to the kernel.
655           This is useful if you cannot or don't want to change the
656           command-line options your boot loader passes to the kernel.
657 
658 config EXTRA_TARGETS
659         string "Additional default image types"
660         help
661           List additional targets to be built by the bootwrapper here (separated
662           by spaces).  This is useful for targets that depend of device tree
663           files in the .dts directory.
664 
665           Targets in this list will be build as part of the default build
666           target, or when the user does a 'make zImage' or a
667           'make zImage.initrd'.
668 
669           If unsure, leave blank
670 
671 config ARCH_WANTS_FREEZER_CONTROL
672         def_bool y
673         depends on ADB_PMU
674 
675 source kernel/power/Kconfig
676 
677 config SECCOMP
678         bool "Enable seccomp to safely compute untrusted bytecode"
679         depends on PROC_FS
680         default y
681         help
682           This kernel feature is useful for number crunching applications
683           that may need to compute untrusted bytecode during their
684           execution. By using pipes or other transports made available to
685           the process as file descriptors supporting the read/write
686           syscalls, it's possible to isolate those applications in
687           their own address space using seccomp. Once seccomp is
688           enabled via /proc/<pid>/seccomp, it cannot be disabled
689           and the task is only allowed to execute a few safe syscalls
690           defined by each seccomp mode.
691 
692           If unsure, say Y. Only embedded should say N here.
693 
694 endmenu
695 
696 config ISA_DMA_API
697         bool
698         default PCI
699 
700 menu "Bus options"
701 
702 config ISA
703         bool "Support for ISA-bus hardware"
704         depends on PPC_CHRP
705         select PPC_I8259
706         help
707           Find out whether you have ISA slots on your motherboard.  ISA is the
708           name of a bus system, i.e. the way the CPU talks to the other stuff
709           inside your box.  If you have an Apple machine, say N here; if you
710           have an IBM RS/6000 or pSeries machine, say Y.  If you have an
711           embedded board, consult your board documentation.
712 
713 config ZONE_DMA
714         bool
715         default y
716 
717 config NEED_DMA_MAP_STATE
718         def_bool (PPC64 || NOT_COHERENT_CACHE)
719 
720 config NEED_SG_DMA_LENGTH
721         def_bool y
722 
723 config GENERIC_ISA_DMA
724         bool
725         depends on ISA_DMA_API
726         default y
727 
728 config PPC_INDIRECT_PCI
729         bool
730         depends on PCI
731         default y if 40x || 44x
732         default n
733 
734 config EISA
735         bool
736 
737 config SBUS
738         bool
739 
740 config FSL_SOC
741         bool
742 
743 config FSL_PCI
744         bool
745         select PPC_INDIRECT_PCI
746         select PCI_QUIRKS
747 
748 config FSL_PMC
749         bool
750         default y
751         depends on SUSPEND && (PPC_85xx || PPC_86xx)
752         help
753           Freescale MPC85xx/MPC86xx power management controller support
754           (suspend/resume). For MPC83xx see platforms/83xx/suspend.c
755 
756 config PPC4xx_CPM
757         bool
758         default y
759         depends on SUSPEND && (44x || 40x)
760         help
761           PPC4xx Clock Power Management (CPM) support (suspend/resume).
762           It also enables support for two different idle states (idle-wait
763           and idle-doze).
764 
765 config 4xx_SOC
766         bool
767 
768 config FSL_LBC
769         bool "Freescale Local Bus support"
770         depends on FSL_SOC
771         help
772           Enables reporting of errors from the Freescale local bus
773           controller.  Also contains some common code used by
774           drivers for specific local bus peripherals.
775 
776 config FSL_GTM
777         bool
778         depends on PPC_83xx || QUICC_ENGINE || CPM2
779         help
780           Freescale General-purpose Timers support
781 
782 # Yes MCA RS/6000s exist but Linux-PPC does not currently support any
783 config MCA
784         bool
785 
786 # Platforms that what PCI turned unconditionally just do select PCI
787 # in their config node.  Platforms that want to choose at config
788 # time should select PPC_PCI_CHOICE
789 config PPC_PCI_CHOICE
790         bool
791 
792 config PCI
793         bool "PCI support" if PPC_PCI_CHOICE
794         default y if !40x && !CPM2 && !8xx && !PPC_83xx \
795                 && !PPC_85xx && !PPC_86xx && !GAMECUBE_COMMON
796         default PCI_QSPAN if !4xx && !CPM2 && 8xx
797         select GENERIC_PCI_IOMAP
798         help
799           Find out whether your system includes a PCI bus. PCI is the name of
800           a bus system, i.e. the way the CPU talks to the other stuff inside
801           your box.  If you say Y here, the kernel will include drivers and
802           infrastructure code to support PCI bus devices.
803 
804 config PCI_DOMAINS
805         def_bool PCI
806 
807 config PCI_SYSCALL
808         def_bool PCI
809 
810 config PCI_QSPAN
811         bool "QSpan PCI"
812         depends on !4xx && !CPM2 && 8xx
813         select PPC_I8259
814         help
815           Say Y here if you have a system based on a Motorola 8xx-series
816           embedded processor with a QSPAN PCI interface, otherwise say N.
817 
818 config PCI_8260
819         bool
820         depends on PCI && 8260
821         select PPC_INDIRECT_PCI
822         default y
823 
824 source "drivers/pci/pcie/Kconfig"
825 
826 source "drivers/pci/Kconfig"
827 
828 source "drivers/pcmcia/Kconfig"
829 
830 source "drivers/pci/hotplug/Kconfig"
831 
832 config HAS_RAPIDIO
833         bool
834         default n
835 
836 config RAPIDIO
837         tristate "RapidIO support"
838         depends on HAS_RAPIDIO || PCI
839         help
840           If you say Y here, the kernel will include drivers and
841           infrastructure code to support RapidIO interconnect devices.
842 
843 config FSL_RIO
844         bool "Freescale Embedded SRIO Controller support"
845         depends on RAPIDIO = y && HAS_RAPIDIO
846         default "n"
847         ---help---
848           Include support for RapidIO controller on Freescale embedded
849           processors (MPC8548, MPC8641, etc).
850 
851 source "drivers/rapidio/Kconfig"
852 
853 endmenu
854 
855 config NONSTATIC_KERNEL
856         bool
857         default n
858 
859 menu "Advanced setup"
860         depends on PPC32
861 
862 config ADVANCED_OPTIONS
863         bool "Prompt for advanced kernel configuration options"
864         help
865           This option will enable prompting for a variety of advanced kernel
866           configuration options.  These options can cause the kernel to not
867           work if they are set incorrectly, but can be used to optimize certain
868           aspects of kernel memory management.
869 
870           Unless you know what you are doing, say N here.
871 
872 comment "Default settings for advanced configuration options are used"
873         depends on !ADVANCED_OPTIONS
874 
875 config LOWMEM_SIZE_BOOL
876         bool "Set maximum low memory"
877         depends on ADVANCED_OPTIONS
878         help
879           This option allows you to set the maximum amount of memory which
880           will be used as "low memory", that is, memory which the kernel can
881           access directly, without having to set up a kernel virtual mapping.
882           This can be useful in optimizing the layout of kernel virtual
883           memory.
884 
885           Say N here unless you know what you are doing.
886 
887 config LOWMEM_SIZE
888         hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
889         default "0x30000000"
890 
891 config LOWMEM_CAM_NUM_BOOL
892         bool "Set number of CAMs to use to map low memory"
893         depends on ADVANCED_OPTIONS && FSL_BOOKE
894         help
895           This option allows you to set the maximum number of CAM slots that
896           will be used to map low memory.  There are a limited number of slots
897           available and even more limited number that will fit in the L1 MMU.
898           However, using more entries will allow mapping more low memory.  This
899           can be useful in optimizing the layout of kernel virtual memory.
900 
901           Say N here unless you know what you are doing.
902 
903 config LOWMEM_CAM_NUM
904         depends on FSL_BOOKE
905         int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL
906         default 3
907 
908 config DYNAMIC_MEMSTART
909         bool "Enable page aligned dynamic load address for kernel"
910         depends on ADVANCED_OPTIONS && FLATMEM && (FSL_BOOKE || 44x)
911         select NONSTATIC_KERNEL
912         help
913           This option enables the kernel to be loaded at any page aligned
914           physical address. The kernel creates a mapping from KERNELBASE to 
915           the address where the kernel is loaded. The page size here implies
916           the TLB page size of the mapping for kernel on the particular platform.
917           Please refer to the init code for finding the TLB page size.
918 
919           DYNAMIC_MEMSTART is an easy way of implementing pseudo-RELOCATABLE
920           kernel image, where the only restriction is the page aligned kernel
921           load address. When this option is enabled, the compile time physical 
922           address CONFIG_PHYSICAL_START is ignored.
923 
924           This option is overridden by CONFIG_RELOCATABLE
925 
926 config RELOCATABLE
927         bool "Build a relocatable kernel"
928         depends on ADVANCED_OPTIONS && FLATMEM && (44x || FSL_BOOKE)
929         select NONSTATIC_KERNEL
930         help
931           This builds a kernel image that is capable of running at the
932           location the kernel is loaded at, without any alignment restrictions.
933           This feature is a superset of DYNAMIC_MEMSTART and hence overrides it.
934 
935           One use is for the kexec on panic case where the recovery kernel
936           must live at a different physical address than the primary
937           kernel.
938 
939           Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address
940           it has been loaded at and the compile time physical addresses
941           CONFIG_PHYSICAL_START is ignored.  However CONFIG_PHYSICAL_START
942           setting can still be useful to bootwrappers that need to know the
943           load address of the kernel (eg. u-boot/mkimage).
944 
945 config RELOCATABLE_PPC32
946         def_bool y
947         depends on PPC32 && RELOCATABLE
948 
949 config PAGE_OFFSET_BOOL
950         bool "Set custom page offset address"
951         depends on ADVANCED_OPTIONS
952         help
953           This option allows you to set the kernel virtual address at which
954           the kernel will map low memory.  This can be useful in optimizing
955           the virtual memory layout of the system.
956 
957           Say N here unless you know what you are doing.
958 
959 config PAGE_OFFSET
960         hex "Virtual address of memory base" if PAGE_OFFSET_BOOL
961         default "0xc0000000"
962 
963 config KERNEL_START_BOOL
964         bool "Set custom kernel base address"
965         depends on ADVANCED_OPTIONS
966         help
967           This option allows you to set the kernel virtual address at which
968           the kernel will be loaded.  Normally this should match PAGE_OFFSET
969           however there are times (like kdump) that one might not want them
970           to be the same.
971 
972           Say N here unless you know what you are doing.
973 
974 config KERNEL_START
975         hex "Virtual address of kernel base" if KERNEL_START_BOOL
976         default PAGE_OFFSET if PAGE_OFFSET_BOOL
977         default "0xc2000000" if CRASH_DUMP && !NONSTATIC_KERNEL
978         default "0xc0000000"
979 
980 config PHYSICAL_START_BOOL
981         bool "Set physical address where the kernel is loaded"
982         depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE
983         help
984           This gives the physical address where the kernel is loaded.
985 
986           Say N here unless you know what you are doing.
987 
988 config PHYSICAL_START
989         hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL
990         default "0x02000000" if PPC_STD_MMU && CRASH_DUMP && !NONSTATIC_KERNEL
991         default "0x00000000"
992 
993 config PHYSICAL_ALIGN
994         hex
995         default "0x04000000" if FSL_BOOKE
996         help
997           This value puts the alignment restrictions on physical address
998           where kernel is loaded and run from. Kernel is compiled for an
999           address which meets above alignment restriction.
1000 
1001 config TASK_SIZE_BOOL
1002         bool "Set custom user task size"
1003         depends on ADVANCED_OPTIONS
1004         help
1005           This option allows you to set the amount of virtual address space
1006           allocated to user tasks.  This can be useful in optimizing the
1007           virtual memory layout of the system.
1008 
1009           Say N here unless you know what you are doing.
1010 
1011 config TASK_SIZE
1012         hex "Size of user task space" if TASK_SIZE_BOOL
1013         default "0x80000000" if PPC_8xx
1014         default "0xc0000000"
1015 
1016 config CONSISTENT_SIZE_BOOL
1017         bool "Set custom consistent memory pool size"
1018         depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
1019         help
1020           This option allows you to set the size of the
1021           consistent memory pool.  This pool of virtual memory
1022           is used to make consistent memory allocations.
1023 
1024 config CONSISTENT_SIZE
1025         hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
1026         default "0x00200000" if NOT_COHERENT_CACHE
1027 
1028 config PIN_TLB
1029         bool "Pinned Kernel TLBs (860 ONLY)"
1030         depends on ADVANCED_OPTIONS && 8xx
1031 endmenu
1032 
1033 if PPC64
1034 config RELOCATABLE
1035         bool "Build a relocatable kernel"
1036         depends on !COMPILE_TEST
1037         select NONSTATIC_KERNEL
1038         help
1039           This builds a kernel image that is capable of running anywhere
1040           in the RMA (real memory area) at any 16k-aligned base address.
1041           The kernel is linked as a position-independent executable (PIE)
1042           and contains dynamic relocations which are processed early
1043           in the bootup process.
1044 
1045           One use is for the kexec on panic case where the recovery kernel
1046           must live at a different physical address than the primary
1047           kernel.
1048 
1049 # This value must have zeroes in the bottom 60 bits otherwise lots will break
1050 config PAGE_OFFSET
1051         hex
1052         default "0xc000000000000000"
1053 config KERNEL_START
1054         hex
1055         default "0xc000000000000000"
1056 config PHYSICAL_START
1057         hex
1058         default "0x00000000"
1059 endif
1060 
1061 config  ARCH_RANDOM
1062         def_bool n
1063 
1064 source "net/Kconfig"
1065 
1066 source "drivers/Kconfig"
1067 
1068 source "fs/Kconfig"
1069 
1070 source "arch/powerpc/sysdev/qe_lib/Kconfig"
1071 
1072 source "lib/Kconfig"
1073 
1074 source "arch/powerpc/Kconfig.debug"
1075 
1076 source "security/Kconfig"
1077 
1078 config KEYS_COMPAT
1079         bool
1080         depends on COMPAT && KEYS
1081         default y
1082 
1083 source "crypto/Kconfig"
1084 
1085 config PPC_LIB_RHEAP
1086         bool
1087 
1088 source "arch/powerpc/kvm/Kconfig"

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