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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 TRACE_IRQFLAGS_SUPPORT
51 bool
52 default y
53
54config LOCKDEP_SUPPORT
55 bool
56 default y
57
58config RWSEM_GENERIC_SPINLOCK
59 bool
60
61config RWSEM_XCHGADD_ALGORITHM
62 bool
63 default y
64
65config GENERIC_LOCKBREAK
66 bool
67 default y
68 depends on SMP && PREEMPT
69
70config ARCH_HAS_ILOG2_U32
71 bool
72 default y
73
74config ARCH_HAS_ILOG2_U64
75 bool
76 default y if 64BIT
77
78config GENERIC_HWEIGHT
79 bool
80 default y
81
82config ARCH_HAS_DMA_SET_COHERENT_MASK
83 bool
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 ARCH_HAS_ELF_RANDOMIZE
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_DYNAMIC_FTRACE_WITH_REGS if MPROFILE_KERNEL
98 select HAVE_FUNCTION_TRACER
99 select HAVE_FUNCTION_GRAPH_TRACER
100 select SYSCTL_EXCEPTION_TRACE
101 select ARCH_WANT_OPTIONAL_GPIOLIB
102 select VIRT_TO_BUS if !PPC64
103 select HAVE_IDE
104 select HAVE_IOREMAP_PROT
105 select HAVE_EFFICIENT_UNALIGNED_ACCESS if !CPU_LITTLE_ENDIAN
106 select HAVE_KPROBES
107 select HAVE_ARCH_KGDB
108 select HAVE_KRETPROBES
109 select HAVE_ARCH_TRACEHOOK
110 select HAVE_MEMBLOCK
111 select HAVE_MEMBLOCK_NODE_MAP
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
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 select HAVE_PERF_EVENTS_NMI if PPC64
156 select EDAC_SUPPORT
157 select EDAC_ATOMIC_SCRUB
158 select ARCH_HAS_DMA_SET_COHERENT_MASK
159 select ARCH_HAS_DEVMEM_IS_ALLOWED
160 select HAVE_ARCH_SECCOMP_FILTER
161 select ARCH_HAS_UBSAN_SANITIZE_ALL
162 select ARCH_SUPPORTS_DEFERRED_STRUCT_PAGE_INIT
163
164config GENERIC_CSUM
165 def_bool CPU_LITTLE_ENDIAN
166
167config EARLY_PRINTK
168 bool
169 default y
170
171config PANIC_TIMEOUT
172 int
173 default 180
174
175config COMPAT
176 bool
177 default y if PPC64
178 select COMPAT_BINFMT_ELF
179 select ARCH_WANT_OLD_COMPAT_IPC
180 select COMPAT_OLD_SIGACTION
181
182config SYSVIPC_COMPAT
183 bool
184 depends on COMPAT && SYSVIPC
185 default y
186
187# All PPC32s use generic nvram driver through ppc_md
188config GENERIC_NVRAM
189 bool
190 default y if PPC32
191
192config SCHED_OMIT_FRAME_POINTER
193 bool
194 default y
195
196config ARCH_MAY_HAVE_PC_FDC
197 bool
198 default PCI
199
200config PPC_UDBG_16550
201 bool
202 default n
203
204config GENERIC_TBSYNC
205 bool
206 default y if PPC32 && SMP
207 default n
208
209config AUDIT_ARCH
210 bool
211 default y
212
213config GENERIC_BUG
214 bool
215 default y
216 depends on BUG
217
218config SYS_SUPPORTS_APM_EMULATION
219 default y if PMAC_APM_EMU
220 bool
221
222config EPAPR_BOOT
223 bool
224 help
225 Used to allow a board to specify it wants an ePAPR compliant wrapper.
226 default n
227
228config DEFAULT_UIMAGE
229 bool
230 help
231 Used to allow a board to specify it wants a uImage built by default
232 default n
233
234config ARCH_HIBERNATION_POSSIBLE
235 bool
236 default y
237
238config ARCH_SUSPEND_POSSIBLE
239 def_bool y
240 depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx || \
241 (PPC_85xx && !PPC_E500MC) || PPC_86xx || PPC_PSERIES \
242 || 44x || 40x
243
244config PPC_DCR_NATIVE
245 bool
246 default n
247
248config PPC_DCR_MMIO
249 bool
250 default n
251
252config PPC_DCR
253 bool
254 depends on PPC_DCR_NATIVE || PPC_DCR_MMIO
255 default y
256
257config PPC_OF_PLATFORM_PCI
258 bool
259 depends on PCI
260 depends on PPC64 # not supported on 32 bits yet
261 default n
262
263config ARCH_SUPPORTS_DEBUG_PAGEALLOC
264 depends on PPC32 || PPC_STD_MMU_64
265 def_bool y
266
267config ARCH_SUPPORTS_UPROBES
268 def_bool y
269
270config PPC_ADV_DEBUG_REGS
271 bool
272 depends on 40x || BOOKE
273 default y
274
275config PPC_ADV_DEBUG_IACS
276 int
277 depends on PPC_ADV_DEBUG_REGS
278 default 4 if 44x
279 default 2
280
281config PPC_ADV_DEBUG_DACS
282 int
283 depends on PPC_ADV_DEBUG_REGS
284 default 2
285
286config PPC_ADV_DEBUG_DVCS
287 int
288 depends on PPC_ADV_DEBUG_REGS
289 default 2 if 44x
290 default 0
291
292config PPC_ADV_DEBUG_DAC_RANGE
293 bool
294 depends on PPC_ADV_DEBUG_REGS && 44x
295 default y
296
297config PPC_EMULATE_SSTEP
298 bool
299 default y if KPROBES || UPROBES || XMON || HAVE_HW_BREAKPOINT
300
301config ZONE_DMA32
302 bool
303 default y if PPC64
304
305config PGTABLE_LEVELS
306 int
307 default 2 if !PPC64
308 default 3 if PPC_64K_PAGES && !PPC_BOOK3S_64
309 default 4
310
311source "init/Kconfig"
312
313source "kernel/Kconfig.freezer"
314
315source "arch/powerpc/sysdev/Kconfig"
316source "arch/powerpc/platforms/Kconfig"
317
318menu "Kernel options"
319
320config HIGHMEM
321 bool "High memory support"
322 depends on PPC32
323
324source kernel/Kconfig.hz
325source kernel/Kconfig.preempt
326source "fs/Kconfig.binfmt"
327
328config HUGETLB_PAGE_SIZE_VARIABLE
329 bool
330 depends on HUGETLB_PAGE
331 default y
332
333config MATH_EMULATION
334 bool "Math emulation"
335 depends on 4xx || 8xx || PPC_MPC832x || BOOKE
336 ---help---
337 Some PowerPC chips designed for embedded applications do not have
338 a floating-point unit and therefore do not implement the
339 floating-point instructions in the PowerPC instruction set. If you
340 say Y here, the kernel will include code to emulate a floating-point
341 unit, which will allow programs that use floating-point
342 instructions to run.
343
344 This is also useful to emulate missing (optional) instructions
345 such as fsqrt on cores that do have an FPU but do not implement
346 them (such as Freescale BookE).
347
348choice
349 prompt "Math emulation options"
350 default MATH_EMULATION_FULL
351 depends on MATH_EMULATION
352
353config MATH_EMULATION_FULL
354 bool "Emulate all the floating point instructions"
355 ---help---
356 Select this option will enable the kernel to support to emulate
357 all the floating point instructions. If your SoC doesn't have
358 a FPU, you should select this.
359
360config MATH_EMULATION_HW_UNIMPLEMENTED
361 bool "Just emulate the FPU unimplemented instructions"
362 ---help---
363 Select this if you know there does have a hardware FPU on your
364 SoC, but some floating point instructions are not implemented by that.
365
366endchoice
367
368config PPC_TRANSACTIONAL_MEM
369 bool "Transactional Memory support for POWERPC"
370 depends on PPC_BOOK3S_64
371 depends on SMP
372 select ALTIVEC
373 select VSX
374 default n
375 ---help---
376 Support user-mode Transactional Memory on POWERPC.
377
378config DISABLE_MPROFILE_KERNEL
379 bool "Disable use of mprofile-kernel for kernel tracing"
380 depends on PPC64 && CPU_LITTLE_ENDIAN
381 default y
382 help
383 Selecting this options disables use of the mprofile-kernel ABI for
384 kernel tracing. That will cause options such as live patching
385 (CONFIG_LIVEPATCH) which depend on CONFIG_DYNAMIC_FTRACE_WITH_REGS to
386 be disabled also.
387
388 If you have a toolchain which supports mprofile-kernel, then you can
389 enable this. Otherwise leave it disabled. If you're not sure, say
390 "N".
391
392config MPROFILE_KERNEL
393 depends on PPC64 && CPU_LITTLE_ENDIAN
394 def_bool !DISABLE_MPROFILE_KERNEL
395
396config IOMMU_HELPER
397 def_bool PPC64
398
399config SWIOTLB
400 bool "SWIOTLB support"
401 default n
402 select IOMMU_HELPER
403 ---help---
404 Support for IO bounce buffering for systems without an IOMMU.
405 This allows us to DMA to the full physical address space on
406 platforms where the size of a physical address is larger
407 than the bus address. Not all platforms support this.
408
409config HOTPLUG_CPU
410 bool "Support for enabling/disabling CPUs"
411 depends on SMP && (PPC_PSERIES || \
412 PPC_PMAC || PPC_POWERNV || FSL_SOC_BOOKE)
413 ---help---
414 Say Y here to be able to disable and re-enable individual
415 CPUs at runtime on SMP machines.
416
417 Say N if you are unsure.
418
419config ARCH_CPU_PROBE_RELEASE
420 def_bool y
421 depends on HOTPLUG_CPU
422
423config ARCH_ENABLE_MEMORY_HOTPLUG
424 def_bool y
425
426config ARCH_HAS_WALK_MEMORY
427 def_bool y
428
429config ARCH_ENABLE_MEMORY_HOTREMOVE
430 def_bool y
431
432config PPC64_SUPPORTS_MEMORY_FAILURE
433 bool "Add support for memory hwpoison"
434 depends on PPC_BOOK3S_64
435 default "y" if PPC_POWERNV
436 select ARCH_SUPPORTS_MEMORY_FAILURE
437
438config KEXEC
439 bool "kexec system call"
440 depends on (PPC_BOOK3S || FSL_BOOKE || (44x && !SMP)) || PPC_BOOK3E
441 select KEXEC_CORE
442 help
443 kexec is a system call that implements the ability to shutdown your
444 current kernel, and to start another kernel. It is like a reboot
445 but it is independent of the system firmware. And like a reboot
446 you can start any kernel with it, not just Linux.
447
448 The name comes from the similarity to the exec system call.
449
450 It is an ongoing process to be certain the hardware in a machine
451 is properly shutdown, so do not be surprised if this code does not
452 initially work for you. As of this writing the exact hardware
453 interface is strongly in flux, so no good recommendation can be
454 made.
455
456config CRASH_DUMP
457 bool "Build a kdump crash kernel"
458 depends on PPC64 || 6xx || FSL_BOOKE || (44x && !SMP)
459 select RELOCATABLE if (PPC64 && !COMPILE_TEST) || 44x || FSL_BOOKE
460 help
461 Build a kernel suitable for use as a kdump capture kernel.
462 The same kernel binary can be used as production kernel and dump
463 capture kernel.
464
465config FA_DUMP
466 bool "Firmware-assisted dump"
467 depends on PPC64 && PPC_RTAS && CRASH_DUMP && KEXEC
468 help
469 A robust mechanism to get reliable kernel crash dump with
470 assistance from firmware. This approach does not use kexec,
471 instead firmware assists in booting the kdump kernel
472 while preserving memory contents. Firmware-assisted dump
473 is meant to be a kdump replacement offering robustness and
474 speed not possible without system firmware assistance.
475
476 If unsure, say "N"
477
478config IRQ_ALL_CPUS
479 bool "Distribute interrupts on all CPUs by default"
480 depends on SMP
481 help
482 This option gives the kernel permission to distribute IRQs across
483 multiple CPUs. Saying N here will route all IRQs to the first
484 CPU. Generally saying Y is safe, although some problems have been
485 reported with SMP Power Macintoshes with this option enabled.
486
487config NUMA
488 bool "NUMA support"
489 depends on PPC64
490 default y if SMP && PPC_PSERIES
491
492config NODES_SHIFT
493 int
494 default "8" if PPC64
495 default "4"
496 depends on NEED_MULTIPLE_NODES
497
498config USE_PERCPU_NUMA_NODE_ID
499 def_bool y
500 depends on NUMA
501
502config HAVE_MEMORYLESS_NODES
503 def_bool y
504 depends on NUMA
505
506config ARCH_SELECT_MEMORY_MODEL
507 def_bool y
508 depends on PPC64
509
510config ARCH_FLATMEM_ENABLE
511 def_bool y
512 depends on (PPC64 && !NUMA) || PPC32
513
514config ARCH_SPARSEMEM_ENABLE
515 def_bool y
516 depends on PPC64
517 select SPARSEMEM_VMEMMAP_ENABLE
518
519config ARCH_SPARSEMEM_DEFAULT
520 def_bool y
521 depends on (SMP && PPC_PSERIES) || PPC_PS3
522
523config SYS_SUPPORTS_HUGETLBFS
524 bool
525
526source "mm/Kconfig"
527
528config ARCH_MEMORY_PROBE
529 def_bool y
530 depends on MEMORY_HOTPLUG
531
532# Some NUMA nodes have memory ranges that span
533# other nodes. Even though a pfn is valid and
534# between a node's start and end pfns, it may not
535# reside on that node. See memmap_init_zone()
536# for details.
537config NODES_SPAN_OTHER_NODES
538 def_bool y
539 depends on NEED_MULTIPLE_NODES
540
541config STDBINUTILS
542 bool "Using standard binutils settings"
543 depends on 44x
544 default y
545 help
546 Turning this option off allows you to select 256KB PAGE_SIZE on 44x.
547 Note, that kernel will be able to run only those applications,
548 which had been compiled using binutils later than 2.17.50.0.3 with
549 '-zmax-page-size' set to 256K (the default is 64K). Or, if using
550 the older binutils, you can patch them with a trivial patch, which
551 changes the ELF_MAXPAGESIZE definition from 0x10000 to 0x40000.
552
553choice
554 prompt "Page size"
555 default PPC_4K_PAGES
556 help
557 Select the kernel logical page size. Increasing the page size
558 will reduce software overhead at each page boundary, allow
559 hardware prefetch mechanisms to be more effective, and allow
560 larger dma transfers increasing IO efficiency and reducing
561 overhead. However the utilization of memory will increase.
562 For example, each cached file will using a multiple of the
563 page size to hold its contents and the difference between the
564 end of file and the end of page is wasted.
565
566 Some dedicated systems, such as software raid serving with
567 accelerated calculations, have shown significant increases.
568
569 If you configure a 64 bit kernel for 64k pages but the
570 processor does not support them, then the kernel will simulate
571 them with 4k pages, loading them on demand, but with the
572 reduced software overhead and larger internal fragmentation.
573 For the 32 bit kernel, a large page option will not be offered
574 unless it is supported by the configured processor.
575
576 If unsure, choose 4K_PAGES.
577
578config PPC_4K_PAGES
579 bool "4k page size"
580 select HAVE_ARCH_SOFT_DIRTY if PPC_BOOK3S_64
581
582config PPC_16K_PAGES
583 bool "16k page size"
584 depends on 44x || PPC_8xx
585
586config PPC_64K_PAGES
587 bool "64k page size"
588 depends on !PPC_FSL_BOOK3E && (44x || PPC_STD_MMU_64 || PPC_BOOK3E_64)
589 select HAVE_ARCH_SOFT_DIRTY if PPC_BOOK3S_64
590
591config PPC_256K_PAGES
592 bool "256k page size"
593 depends on 44x && !STDBINUTILS
594 help
595 Make the page size 256k.
596
597 As the ELF standard only requires alignment to support page
598 sizes up to 64k, you will need to compile all of your user
599 space applications with a non-standard binutils settings
600 (see the STDBINUTILS description for details).
601
602 Say N unless you know what you are doing.
603
604endchoice
605
606config FORCE_MAX_ZONEORDER
607 int "Maximum zone order"
608 range 9 64 if PPC64 && PPC_64K_PAGES
609 default "9" if PPC64 && PPC_64K_PAGES
610 range 13 64 if PPC64 && !PPC_64K_PAGES
611 default "13" if PPC64 && !PPC_64K_PAGES
612 range 9 64 if PPC32 && PPC_16K_PAGES
613 default "9" if PPC32 && PPC_16K_PAGES
614 range 7 64 if PPC32 && PPC_64K_PAGES
615 default "7" if PPC32 && PPC_64K_PAGES
616 range 5 64 if PPC32 && PPC_256K_PAGES
617 default "5" if PPC32 && PPC_256K_PAGES
618 range 11 64
619 default "11"
620 help
621 The kernel memory allocator divides physically contiguous memory
622 blocks into "zones", where each zone is a power of two number of
623 pages. This option selects the largest power of two that the kernel
624 keeps in the memory allocator. If you need to allocate very large
625 blocks of physically contiguous memory, then you may need to
626 increase this value.
627
628 This config option is actually maximum order plus one. For example,
629 a value of 11 means that the largest free memory block is 2^10 pages.
630
631 The page size is not necessarily 4KB. For example, on 64-bit
632 systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES. Keep
633 this in mind when choosing a value for this option.
634
635config PPC_SUBPAGE_PROT
636 bool "Support setting protections for 4k subpages"
637 depends on PPC_STD_MMU_64 && PPC_64K_PAGES
638 help
639 This option adds support for a system call to allow user programs
640 to set access permissions (read/write, readonly, or no access)
641 on the 4k subpages of each 64k page.
642
643config PPC_COPRO_BASE
644 bool
645 default n
646
647config SCHED_SMT
648 bool "SMT (Hyperthreading) scheduler support"
649 depends on PPC64 && SMP
650 help
651 SMT scheduler support improves the CPU scheduler's decision making
652 when dealing with POWER5 cpus at a cost of slightly increased
653 overhead in some places. If unsure say N here.
654
655config PPC_DENORMALISATION
656 bool "PowerPC denormalisation exception handling"
657 depends on PPC_BOOK3S_64
658 default "y" if PPC_POWERNV
659 ---help---
660 Add support for handling denormalisation of single precision
661 values. Useful for bare metal only. If unsure say Y here.
662
663config CMDLINE_BOOL
664 bool "Default bootloader kernel arguments"
665
666config CMDLINE
667 string "Initial kernel command string"
668 depends on CMDLINE_BOOL
669 default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
670 help
671 On some platforms, there is currently no way for the boot loader to
672 pass arguments to the kernel. For these platforms, you can supply
673 some command-line options at build time by entering them here. In
674 most cases you will need to specify the root device here.
675
676config CMDLINE_FORCE
677 bool "Always use the default kernel command string"
678 depends on CMDLINE_BOOL
679 help
680 Always use the default kernel command string, even if the boot
681 loader passes other arguments to the kernel.
682 This is useful if you cannot or don't want to change the
683 command-line options your boot loader passes to the kernel.
684
685config EXTRA_TARGETS
686 string "Additional default image types"
687 help
688 List additional targets to be built by the bootwrapper here (separated
689 by spaces). This is useful for targets that depend of device tree
690 files in the .dts directory.
691
692 Targets in this list will be build as part of the default build
693 target, or when the user does a 'make zImage' or a
694 'make zImage.initrd'.
695
696 If unsure, leave blank
697
698config ARCH_WANTS_FREEZER_CONTROL
699 def_bool y
700 depends on ADB_PMU
701
702source kernel/power/Kconfig
703
704config SECCOMP
705 bool "Enable seccomp to safely compute untrusted bytecode"
706 depends on PROC_FS
707 default y
708 help
709 This kernel feature is useful for number crunching applications
710 that may need to compute untrusted bytecode during their
711 execution. By using pipes or other transports made available to
712 the process as file descriptors supporting the read/write
713 syscalls, it's possible to isolate those applications in
714 their own address space using seccomp. Once seccomp is
715 enabled via /proc/<pid>/seccomp, it cannot be disabled
716 and the task is only allowed to execute a few safe syscalls
717 defined by each seccomp mode.
718
719 If unsure, say Y. Only embedded should say N here.
720
721endmenu
722
723config ISA_DMA_API
724 bool
725 default PCI
726
727menu "Bus options"
728
729config ISA
730 bool "Support for ISA-bus hardware"
731 depends on PPC_CHRP
732 select PPC_I8259
733 help
734 Find out whether you have ISA slots on your motherboard. ISA is the
735 name of a bus system, i.e. the way the CPU talks to the other stuff
736 inside your box. If you have an Apple machine, say N here; if you
737 have an IBM RS/6000 or pSeries machine, say Y. If you have an
738 embedded board, consult your board documentation.
739
740config ZONE_DMA
741 bool
742 default y
743
744config NEED_DMA_MAP_STATE
745 def_bool (PPC64 || NOT_COHERENT_CACHE)
746
747config NEED_SG_DMA_LENGTH
748 def_bool y
749
750config GENERIC_ISA_DMA
751 bool
752 depends on ISA_DMA_API
753 default y
754
755config PPC_INDIRECT_PCI
756 bool
757 depends on PCI
758 default y if 40x || 44x
759 default n
760
761config EISA
762 bool
763
764config SBUS
765 bool
766
767config FSL_SOC
768 bool
769
770config FSL_PCI
771 bool
772 select PPC_INDIRECT_PCI
773 select PCI_QUIRKS
774
775config FSL_PMC
776 bool
777 default y
778 depends on SUSPEND && (PPC_85xx || PPC_86xx)
779 help
780 Freescale MPC85xx/MPC86xx power management controller support
781 (suspend/resume). For MPC83xx see platforms/83xx/suspend.c
782
783config PPC4xx_CPM
784 bool
785 default y
786 depends on SUSPEND && (44x || 40x)
787 help
788 PPC4xx Clock Power Management (CPM) support (suspend/resume).
789 It also enables support for two different idle states (idle-wait
790 and idle-doze).
791
792config 4xx_SOC
793 bool
794
795config FSL_LBC
796 bool "Freescale Local Bus support"
797 depends on FSL_SOC
798 help
799 Enables reporting of errors from the Freescale local bus
800 controller. Also contains some common code used by
801 drivers for specific local bus peripherals.
802
803config FSL_GTM
804 bool
805 depends on PPC_83xx || QUICC_ENGINE || CPM2
806 help
807 Freescale General-purpose Timers support
808
809# Yes MCA RS/6000s exist but Linux-PPC does not currently support any
810config MCA
811 bool
812
813# Platforms that what PCI turned unconditionally just do select PCI
814# in their config node. Platforms that want to choose at config
815# time should select PPC_PCI_CHOICE
816config PPC_PCI_CHOICE
817 bool
818
819config PCI
820 bool "PCI support" if PPC_PCI_CHOICE
821 default y if !40x && !CPM2 && !8xx && !PPC_83xx \
822 && !PPC_85xx && !PPC_86xx && !GAMECUBE_COMMON
823 default PCI_QSPAN if !4xx && !CPM2 && 8xx
824 select GENERIC_PCI_IOMAP
825 help
826 Find out whether your system includes a PCI bus. PCI is the name of
827 a bus system, i.e. the way the CPU talks to the other stuff inside
828 your box. If you say Y here, the kernel will include drivers and
829 infrastructure code to support PCI bus devices.
830
831config PCI_DOMAINS
832 def_bool PCI
833
834config PCI_SYSCALL
835 def_bool PCI
836
837config PCI_QSPAN
838 bool "QSpan PCI"
839 depends on !4xx && !CPM2 && 8xx
840 select PPC_I8259
841 help
842 Say Y here if you have a system based on a Motorola 8xx-series
843 embedded processor with a QSPAN PCI interface, otherwise say N.
844
845config PCI_8260
846 bool
847 depends on PCI && 8260
848 select PPC_INDIRECT_PCI
849 default y
850
851source "drivers/pci/Kconfig"
852
853source "drivers/pcmcia/Kconfig"
854
855config HAS_RAPIDIO
856 bool
857 default n
858
859config RAPIDIO
860 tristate "RapidIO support"
861 depends on HAS_RAPIDIO || PCI
862 help
863 If you say Y here, the kernel will include drivers and
864 infrastructure code to support RapidIO interconnect devices.
865
866config FSL_RIO
867 bool "Freescale Embedded SRIO Controller support"
868 depends on RAPIDIO = y && HAS_RAPIDIO
869 default "n"
870 ---help---
871 Include support for RapidIO controller on Freescale embedded
872 processors (MPC8548, MPC8641, etc).
873
874source "drivers/rapidio/Kconfig"
875
876endmenu
877
878config NONSTATIC_KERNEL
879 bool
880 default n
881
882menu "Advanced setup"
883 depends on PPC32
884
885config ADVANCED_OPTIONS
886 bool "Prompt for advanced kernel configuration options"
887 help
888 This option will enable prompting for a variety of advanced kernel
889 configuration options. These options can cause the kernel to not
890 work if they are set incorrectly, but can be used to optimize certain
891 aspects of kernel memory management.
892
893 Unless you know what you are doing, say N here.
894
895comment "Default settings for advanced configuration options are used"
896 depends on !ADVANCED_OPTIONS
897
898config LOWMEM_SIZE_BOOL
899 bool "Set maximum low memory"
900 depends on ADVANCED_OPTIONS
901 help
902 This option allows you to set the maximum amount of memory which
903 will be used as "low memory", that is, memory which the kernel can
904 access directly, without having to set up a kernel virtual mapping.
905 This can be useful in optimizing the layout of kernel virtual
906 memory.
907
908 Say N here unless you know what you are doing.
909
910config LOWMEM_SIZE
911 hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
912 default "0x30000000"
913
914config LOWMEM_CAM_NUM_BOOL
915 bool "Set number of CAMs to use to map low memory"
916 depends on ADVANCED_OPTIONS && FSL_BOOKE
917 help
918 This option allows you to set the maximum number of CAM slots that
919 will be used to map low memory. There are a limited number of slots
920 available and even more limited number that will fit in the L1 MMU.
921 However, using more entries will allow mapping more low memory. This
922 can be useful in optimizing the layout of kernel virtual memory.
923
924 Say N here unless you know what you are doing.
925
926config LOWMEM_CAM_NUM
927 depends on FSL_BOOKE
928 int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL
929 default 3
930
931config DYNAMIC_MEMSTART
932 bool "Enable page aligned dynamic load address for kernel"
933 depends on ADVANCED_OPTIONS && FLATMEM && (FSL_BOOKE || 44x)
934 select NONSTATIC_KERNEL
935 help
936 This option enables the kernel to be loaded at any page aligned
937 physical address. The kernel creates a mapping from KERNELBASE to
938 the address where the kernel is loaded. The page size here implies
939 the TLB page size of the mapping for kernel on the particular platform.
940 Please refer to the init code for finding the TLB page size.
941
942 DYNAMIC_MEMSTART is an easy way of implementing pseudo-RELOCATABLE
943 kernel image, where the only restriction is the page aligned kernel
944 load address. When this option is enabled, the compile time physical
945 address CONFIG_PHYSICAL_START is ignored.
946
947 This option is overridden by CONFIG_RELOCATABLE
948
949config RELOCATABLE
950 bool "Build a relocatable kernel"
951 depends on ADVANCED_OPTIONS && FLATMEM && (44x || FSL_BOOKE)
952 select NONSTATIC_KERNEL
953 help
954 This builds a kernel image that is capable of running at the
955 location the kernel is loaded at, without any alignment restrictions.
956 This feature is a superset of DYNAMIC_MEMSTART and hence overrides it.
957
958 One use is for the kexec on panic case where the recovery kernel
959 must live at a different physical address than the primary
960 kernel.
961
962 Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address
963 it has been loaded at and the compile time physical addresses
964 CONFIG_PHYSICAL_START is ignored. However CONFIG_PHYSICAL_START
965 setting can still be useful to bootwrappers that need to know the
966 load address of the kernel (eg. u-boot/mkimage).
967
968config RELOCATABLE_PPC32
969 def_bool y
970 depends on PPC32 && RELOCATABLE
971
972config PAGE_OFFSET_BOOL
973 bool "Set custom page offset address"
974 depends on ADVANCED_OPTIONS
975 help
976 This option allows you to set the kernel virtual address at which
977 the kernel will map low memory. This can be useful in optimizing
978 the virtual memory layout of the system.
979
980 Say N here unless you know what you are doing.
981
982config PAGE_OFFSET
983 hex "Virtual address of memory base" if PAGE_OFFSET_BOOL
984 default "0xc0000000"
985
986config KERNEL_START_BOOL
987 bool "Set custom kernel base address"
988 depends on ADVANCED_OPTIONS
989 help
990 This option allows you to set the kernel virtual address at which
991 the kernel will be loaded. Normally this should match PAGE_OFFSET
992 however there are times (like kdump) that one might not want them
993 to be the same.
994
995 Say N here unless you know what you are doing.
996
997config KERNEL_START
998 hex "Virtual address of kernel base" if KERNEL_START_BOOL
999 default PAGE_OFFSET if PAGE_OFFSET_BOOL
1000 default "0xc2000000" if CRASH_DUMP && !NONSTATIC_KERNEL
1001 default "0xc0000000"
1002
1003config PHYSICAL_START_BOOL
1004 bool "Set physical address where the kernel is loaded"
1005 depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE
1006 help
1007 This gives the physical address where the kernel is loaded.
1008
1009 Say N here unless you know what you are doing.
1010
1011config PHYSICAL_START
1012 hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL
1013 default "0x02000000" if PPC_STD_MMU && CRASH_DUMP && !NONSTATIC_KERNEL
1014 default "0x00000000"
1015
1016config PHYSICAL_ALIGN
1017 hex
1018 default "0x04000000" if FSL_BOOKE
1019 help
1020 This value puts the alignment restrictions on physical address
1021 where kernel is loaded and run from. Kernel is compiled for an
1022 address which meets above alignment restriction.
1023
1024config TASK_SIZE_BOOL
1025 bool "Set custom user task size"
1026 depends on ADVANCED_OPTIONS
1027 help
1028 This option allows you to set the amount of virtual address space
1029 allocated to user tasks. This can be useful in optimizing the
1030 virtual memory layout of the system.
1031
1032 Say N here unless you know what you are doing.
1033
1034config TASK_SIZE
1035 hex "Size of user task space" if TASK_SIZE_BOOL
1036 default "0x80000000" if PPC_8xx
1037 default "0xc0000000"
1038
1039config CONSISTENT_SIZE_BOOL
1040 bool "Set custom consistent memory pool size"
1041 depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
1042 help
1043 This option allows you to set the size of the
1044 consistent memory pool. This pool of virtual memory
1045 is used to make consistent memory allocations.
1046
1047config CONSISTENT_SIZE
1048 hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
1049 default "0x00200000" if NOT_COHERENT_CACHE
1050
1051config PIN_TLB
1052 bool "Pinned Kernel TLBs (860 ONLY)"
1053 depends on ADVANCED_OPTIONS && 8xx
1054endmenu
1055
1056if PPC64
1057config RELOCATABLE
1058 bool "Build a relocatable kernel"
1059 depends on !COMPILE_TEST
1060 select NONSTATIC_KERNEL
1061 help
1062 This builds a kernel image that is capable of running anywhere
1063 in the RMA (real memory area) at any 16k-aligned base address.
1064 The kernel is linked as a position-independent executable (PIE)
1065 and contains dynamic relocations which are processed early
1066 in the bootup process.
1067
1068 One use is for the kexec on panic case where the recovery kernel
1069 must live at a different physical address than the primary
1070 kernel.
1071
1072# This value must have zeroes in the bottom 60 bits otherwise lots will break
1073config PAGE_OFFSET
1074 hex
1075 default "0xc000000000000000"
1076config KERNEL_START
1077 hex
1078 default "0xc000000000000000"
1079config PHYSICAL_START
1080 hex
1081 default "0x00000000"
1082endif
1083
1084config ARCH_RANDOM
1085 def_bool n
1086
1087source "net/Kconfig"
1088
1089source "drivers/Kconfig"
1090
1091source "fs/Kconfig"
1092
1093source "lib/Kconfig"
1094
1095source "arch/powerpc/Kconfig.debug"
1096
1097source "security/Kconfig"
1098
1099config KEYS_COMPAT
1100 bool
1101 depends on COMPAT && KEYS
1102 default y
1103
1104source "crypto/Kconfig"
1105
1106config PPC_LIB_RHEAP
1107 bool
1108
1109source "arch/powerpc/kvm/Kconfig"