Root/arch/powerpc/Kconfig

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

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