xref: /openbmc/linux/arch/powerpc/Kconfig (revision e8e0929d)
1# For a description of the syntax of this configuration file,
2# see Documentation/kbuild/kconfig-language.txt.
3#
4
5mainmenu "Linux/PowerPC Kernel Configuration"
6
7source "arch/powerpc/platforms/Kconfig.cputype"
8
9config PPC32
10	bool
11	default y if !PPC64
12
13config 64BIT
14	bool
15	default y if PPC64
16
17config WORD_SIZE
18	int
19	default 64 if PPC64
20	default 32 if !PPC64
21
22config ARCH_PHYS_ADDR_T_64BIT
23       def_bool PPC64 || PHYS_64BIT
24
25config MMU
26	bool
27	default y
28
29config GENERIC_CMOS_UPDATE
30	def_bool y
31
32config GENERIC_TIME
33	def_bool y
34
35config GENERIC_TIME_VSYSCALL
36	def_bool y
37
38config GENERIC_CLOCKEVENTS
39	def_bool y
40
41config GENERIC_HARDIRQS
42	bool
43	default y
44
45config GENERIC_HARDIRQS_NO__DO_IRQ
46	bool
47	default y
48
49config HAVE_SETUP_PER_CPU_AREA
50	def_bool PPC64
51
52config NEED_PER_CPU_EMBED_FIRST_CHUNK
53	def_bool PPC64
54
55config IRQ_PER_CPU
56	bool
57	default y
58
59config STACKTRACE_SUPPORT
60	bool
61	default y
62
63config HAVE_LATENCYTOP_SUPPORT
64	def_bool y
65
66config TRACE_IRQFLAGS_SUPPORT
67	bool
68	default y
69
70config LOCKDEP_SUPPORT
71	bool
72	default y
73
74config RWSEM_GENERIC_SPINLOCK
75	bool
76
77config RWSEM_XCHGADD_ALGORITHM
78	bool
79	default y
80
81config GENERIC_LOCKBREAK
82	bool
83	default y
84	depends on SMP && PREEMPT
85
86config ARCH_HAS_ILOG2_U32
87	bool
88	default y
89
90config ARCH_HAS_ILOG2_U64
91	bool
92	default y if 64BIT
93
94config GENERIC_HWEIGHT
95	bool
96	default y
97
98config GENERIC_FIND_NEXT_BIT
99	bool
100	default y
101
102config GENERIC_GPIO
103	bool
104	help
105	  Generic GPIO API support
106
107config ARCH_NO_VIRT_TO_BUS
108	def_bool PPC64
109
110config PPC
111	bool
112	default y
113	select HAVE_FTRACE_MCOUNT_RECORD
114	select HAVE_DYNAMIC_FTRACE
115	select HAVE_FUNCTION_TRACER
116	select HAVE_FUNCTION_GRAPH_TRACER
117	select ARCH_WANT_OPTIONAL_GPIOLIB
118	select HAVE_IDE
119	select HAVE_IOREMAP_PROT
120	select HAVE_EFFICIENT_UNALIGNED_ACCESS
121	select HAVE_KPROBES
122	select HAVE_ARCH_KGDB
123	select HAVE_KRETPROBES
124	select HAVE_ARCH_TRACEHOOK
125	select HAVE_LMB
126	select HAVE_DMA_ATTRS
127	select HAVE_DMA_API_DEBUG
128	select USE_GENERIC_SMP_HELPERS if SMP
129	select HAVE_OPROFILE
130	select HAVE_SYSCALL_WRAPPERS if PPC64
131	select GENERIC_ATOMIC64 if PPC32
132	select HAVE_PERF_EVENTS
133
134config EARLY_PRINTK
135	bool
136	default y
137
138config COMPAT
139	bool
140	default y if PPC64
141	select COMPAT_BINFMT_ELF
142
143config SYSVIPC_COMPAT
144	bool
145	depends on COMPAT && SYSVIPC
146	default y
147
148# All PPC32s use generic nvram driver through ppc_md
149config GENERIC_NVRAM
150	bool
151	default y if PPC32
152
153config SCHED_OMIT_FRAME_POINTER
154	bool
155	default y
156
157config ARCH_MAY_HAVE_PC_FDC
158	bool
159	default !PPC_PSERIES || PCI
160
161config PPC_OF
162	def_bool y
163
164config OF
165	def_bool y
166
167config PPC_UDBG_16550
168	bool
169	default n
170
171config GENERIC_TBSYNC
172	bool
173	default y if PPC32 && SMP
174	default n
175
176config AUDIT_ARCH
177	bool
178	default y
179
180config GENERIC_BUG
181	bool
182	default y
183	depends on BUG
184
185config SYS_SUPPORTS_APM_EMULATION
186	default y if PMAC_APM_EMU
187	bool
188
189config DTC
190       bool
191       default y
192
193config DEFAULT_UIMAGE
194	bool
195	help
196	  Used to allow a board to specify it wants a uImage built by default
197	default n
198
199config REDBOOT
200	bool
201
202config HIBERNATE_32
203	bool
204	depends on (PPC_PMAC && !SMP) || BROKEN
205	default y
206
207config HIBERNATE_64
208	bool
209	depends on BROKEN || (PPC_PMAC64 && EXPERIMENTAL)
210	default y
211
212config ARCH_HIBERNATION_POSSIBLE
213	bool
214	depends on (PPC64 && HIBERNATE_64) || (PPC32 && HIBERNATE_32)
215	default y
216
217config ARCH_SUSPEND_POSSIBLE
218	def_bool y
219	depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx
220
221config PPC_DCR_NATIVE
222	bool
223	default n
224
225config PPC_DCR_MMIO
226	bool
227	default n
228
229config PPC_DCR
230	bool
231	depends on PPC_DCR_NATIVE || PPC_DCR_MMIO
232	default y
233
234config PPC_OF_PLATFORM_PCI
235	bool
236	depends on PCI
237	depends on PPC64 # not supported on 32 bits yet
238	default n
239
240config ARCH_SUPPORTS_DEBUG_PAGEALLOC
241	def_bool y
242
243source "init/Kconfig"
244
245source "kernel/Kconfig.freezer"
246
247source "arch/powerpc/sysdev/Kconfig"
248source "arch/powerpc/platforms/Kconfig"
249
250menu "Kernel options"
251
252config HIGHMEM
253	bool "High memory support"
254	depends on PPC32
255
256source kernel/time/Kconfig
257source kernel/Kconfig.hz
258source kernel/Kconfig.preempt
259source "fs/Kconfig.binfmt"
260
261config HUGETLB_PAGE_SIZE_VARIABLE
262	bool
263	depends on HUGETLB_PAGE
264	default y
265
266config MATH_EMULATION
267	bool "Math emulation"
268	depends on 4xx || 8xx || E200 || PPC_MPC832x || E500
269	---help---
270	  Some PowerPC chips designed for embedded applications do not have
271	  a floating-point unit and therefore do not implement the
272	  floating-point instructions in the PowerPC instruction set.  If you
273	  say Y here, the kernel will include code to emulate a floating-point
274	  unit, which will allow programs that use floating-point
275	  instructions to run.
276
277config 8XX_MINIMAL_FPEMU
278	bool "Minimal math emulation for 8xx"
279	depends on 8xx && !MATH_EMULATION
280	help
281	  Older arch/ppc kernels still emulated a few floating point
282	  instructions such as load and store, even when full math
283	  emulation is disabled.  Say "Y" here if you want to preserve
284	  this behavior.
285
286	  It is recommended that you build a soft-float userspace instead.
287
288config IOMMU_VMERGE
289	bool "Enable IOMMU virtual merging"
290	depends on PPC64
291	default y
292	help
293	  Cause IO segments sent to a device for DMA to be merged virtually
294	  by the IOMMU when they happen to have been allocated contiguously.
295	  This doesn't add pressure to the IOMMU allocator. However, some
296	  drivers don't support getting large merged segments coming back
297	  from *_map_sg().
298
299	  Most drivers don't have this problem; it is safe to say Y here.
300
301config IOMMU_HELPER
302	def_bool PPC64
303
304config SWIOTLB
305	bool "SWIOTLB support"
306	default n
307	select IOMMU_HELPER
308	---help---
309	  Support for IO bounce buffering for systems without an IOMMU.
310	  This allows us to DMA to the full physical address space on
311	  platforms where the size of a physical address is larger
312	  than the bus address.  Not all platforms support this.
313
314config HOTPLUG_CPU
315	bool "Support for enabling/disabling CPUs"
316	depends on SMP && HOTPLUG && EXPERIMENTAL && (PPC_PSERIES || PPC_PMAC)
317	---help---
318	  Say Y here to be able to disable and re-enable individual
319	  CPUs at runtime on SMP machines.
320
321	  Say N if you are unsure.
322
323config ARCH_ENABLE_MEMORY_HOTPLUG
324	def_bool y
325
326config ARCH_HAS_WALK_MEMORY
327	def_bool y
328
329config ARCH_ENABLE_MEMORY_HOTREMOVE
330	def_bool y
331
332config KEXEC
333	bool "kexec system call (EXPERIMENTAL)"
334	depends on PPC_BOOK3S && EXPERIMENTAL
335	help
336	  kexec is a system call that implements the ability to shutdown your
337	  current kernel, and to start another kernel.  It is like a reboot
338	  but it is independent of the system firmware.   And like a reboot
339	  you can start any kernel with it, not just Linux.
340
341	  The name comes from the similarity to the exec system call.
342
343	  It is an ongoing process to be certain the hardware in a machine
344	  is properly shutdown, so do not be surprised if this code does not
345	  initially work for you.  It may help to enable device hotplugging
346	  support.  As of this writing the exact hardware interface is
347	  strongly in flux, so no good recommendation can be made.
348
349config CRASH_DUMP
350	bool "Build a kdump crash kernel"
351	depends on PPC64 || 6xx
352	select RELOCATABLE if PPC64
353	help
354	  Build a kernel suitable for use as a kdump capture kernel.
355	  The same kernel binary can be used as production kernel and dump
356	  capture kernel.
357
358config PHYP_DUMP
359	bool "Hypervisor-assisted dump (EXPERIMENTAL)"
360	depends on PPC_PSERIES && EXPERIMENTAL
361	help
362	  Hypervisor-assisted dump is meant to be a kdump replacement
363	  offering robustness and speed not possible without system
364	  hypervisor assistance.
365
366	  If unsure, say "N"
367
368config PPCBUG_NVRAM
369	bool "Enable reading PPCBUG NVRAM during boot" if PPLUS || LOPEC
370	default y if PPC_PREP
371
372config IRQ_ALL_CPUS
373	bool "Distribute interrupts on all CPUs by default"
374	depends on SMP && !MV64360
375	help
376	  This option gives the kernel permission to distribute IRQs across
377	  multiple CPUs.  Saying N here will route all IRQs to the first
378	  CPU.  Generally saying Y is safe, although some problems have been
379	  reported with SMP Power Macintoshes with this option enabled.
380
381config NUMA
382	bool "NUMA support"
383	depends on PPC64
384	default y if SMP && PPC_PSERIES
385
386config NODES_SHIFT
387	int
388	default "8" if PPC64
389	default "4"
390	depends on NEED_MULTIPLE_NODES
391
392config MAX_ACTIVE_REGIONS
393	int
394	default "256" if PPC64
395	default "32"
396
397config ARCH_SELECT_MEMORY_MODEL
398	def_bool y
399	depends on PPC64
400
401config ARCH_FLATMEM_ENABLE
402	def_bool y
403	depends on (PPC64 && !NUMA) || PPC32
404
405config ARCH_SPARSEMEM_ENABLE
406	def_bool y
407	depends on PPC64
408	select SPARSEMEM_VMEMMAP_ENABLE
409
410config ARCH_SPARSEMEM_DEFAULT
411	def_bool y
412	depends on (SMP && PPC_PSERIES) || PPC_PS3
413
414config ARCH_POPULATES_NODE_MAP
415	def_bool y
416
417source "mm/Kconfig"
418
419config ARCH_MEMORY_PROBE
420	def_bool y
421	depends on MEMORY_HOTPLUG
422
423# Some NUMA nodes have memory ranges that span
424# other nodes.  Even though a pfn is valid and
425# between a node's start and end pfns, it may not
426# reside on that node.  See memmap_init_zone()
427# for details.
428config NODES_SPAN_OTHER_NODES
429	def_bool y
430	depends on NEED_MULTIPLE_NODES
431
432config PPC_HAS_HASH_64K
433	bool
434	depends on PPC64
435	default n
436
437config STDBINUTILS
438	bool "Using standard binutils settings"
439	depends on 44x
440	default y
441	help
442	  Turning this option off allows you to select 256KB PAGE_SIZE on 44x.
443	  Note, that kernel will be able to run only those applications,
444	  which had been compiled using binutils later than 2.17.50.0.3 with
445	  '-zmax-page-size' set to 256K (the default is 64K). Or, if using
446	  the older binutils, you can patch them with a trivial patch, which
447	  changes the ELF_MAXPAGESIZE definition from 0x10000 to 0x40000.
448
449choice
450	prompt "Page size"
451	default PPC_4K_PAGES
452	help
453	  Select the kernel logical page size. Increasing the page size
454	  will reduce software overhead at each page boundary, allow
455	  hardware prefetch mechanisms to be more effective, and allow
456	  larger dma transfers increasing IO efficiency and reducing
457	  overhead. However the utilization of memory will increase.
458	  For example, each cached file will using a multiple of the
459	  page size to hold its contents and the difference between the
460	  end of file and the end of page is wasted.
461
462	  Some dedicated systems, such as software raid serving with
463	  accelerated calculations, have shown significant increases.
464
465	  If you configure a 64 bit kernel for 64k pages but the
466	  processor does not support them, then the kernel will simulate
467	  them with 4k pages, loading them on demand, but with the
468	  reduced software overhead and larger internal fragmentation.
469	  For the 32 bit kernel, a large page option will not be offered
470	  unless it is supported by the configured processor.
471
472	  If unsure, choose 4K_PAGES.
473
474config PPC_4K_PAGES
475	bool "4k page size"
476
477config PPC_16K_PAGES
478	bool "16k page size" if 44x
479
480config PPC_64K_PAGES
481	bool "64k page size" if 44x || PPC_STD_MMU_64 || PPC_BOOK3E_64
482	select PPC_HAS_HASH_64K if PPC_STD_MMU_64
483
484config PPC_256K_PAGES
485	bool "256k page size" if 44x
486	depends on !STDBINUTILS
487	help
488	  Make the page size 256k.
489
490	  As the ELF standard only requires alignment to support page
491	  sizes up to 64k, you will need to compile all of your user
492	  space applications with a non-standard binutils settings
493	  (see the STDBINUTILS description for details).
494
495	  Say N unless you know what you are doing.
496
497endchoice
498
499config FORCE_MAX_ZONEORDER
500	int "Maximum zone order"
501	range 9 64 if PPC64 && PPC_64K_PAGES
502	default "9" if PPC64 && PPC_64K_PAGES
503	range 13 64 if PPC64 && !PPC_64K_PAGES
504	default "13" if PPC64 && !PPC_64K_PAGES
505	range 9 64 if PPC32 && PPC_16K_PAGES
506	default "9" if PPC32 && PPC_16K_PAGES
507	range 7 64 if PPC32 && PPC_64K_PAGES
508	default "7" if PPC32 && PPC_64K_PAGES
509	range 5 64 if PPC32 && PPC_256K_PAGES
510	default "5" if PPC32 && PPC_256K_PAGES
511	range 11 64
512	default "11"
513	help
514	  The kernel memory allocator divides physically contiguous memory
515	  blocks into "zones", where each zone is a power of two number of
516	  pages.  This option selects the largest power of two that the kernel
517	  keeps in the memory allocator.  If you need to allocate very large
518	  blocks of physically contiguous memory, then you may need to
519	  increase this value.
520
521	  This config option is actually maximum order plus one. For example,
522	  a value of 11 means that the largest free memory block is 2^10 pages.
523
524	  The page size is not necessarily 4KB.  For example, on 64-bit
525	  systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES.  Keep
526	  this in mind when choosing a value for this option.
527
528config PPC_SUBPAGE_PROT
529	bool "Support setting protections for 4k subpages"
530	depends on PPC_STD_MMU_64 && PPC_64K_PAGES
531	help
532	  This option adds support for a system call to allow user programs
533	  to set access permissions (read/write, readonly, or no access)
534	  on the 4k subpages of each 64k page.
535
536config SCHED_SMT
537	bool "SMT (Hyperthreading) scheduler support"
538	depends on PPC64 && SMP
539	help
540	  SMT scheduler support improves the CPU scheduler's decision making
541	  when dealing with POWER5 cpus at a cost of slightly increased
542	  overhead in some places. If unsure say N here.
543
544config PROC_DEVICETREE
545	bool "Support for device tree in /proc"
546	depends on PROC_FS
547	help
548	  This option adds a device-tree directory under /proc which contains
549	  an image of the device tree that the kernel copies from Open
550	  Firmware or other boot firmware. If unsure, say Y here.
551
552config CMDLINE_BOOL
553	bool "Default bootloader kernel arguments"
554
555config CMDLINE
556	string "Initial kernel command string"
557	depends on CMDLINE_BOOL
558	default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
559	help
560	  On some platforms, there is currently no way for the boot loader to
561	  pass arguments to the kernel. For these platforms, you can supply
562	  some command-line options at build time by entering them here.  In
563	  most cases you will need to specify the root device here.
564
565config EXTRA_TARGETS
566	string "Additional default image types"
567	help
568	  List additional targets to be built by the bootwrapper here (separated
569	  by spaces).  This is useful for targets that depend of device tree
570	  files in the .dts directory.
571
572	  Targets in this list will be build as part of the default build
573	  target, or when the user does a 'make zImage' or a
574	  'make zImage.initrd'.
575
576	  If unsure, leave blank
577
578if !44x || BROKEN
579config ARCH_WANTS_FREEZER_CONTROL
580	def_bool y
581	depends on ADB_PMU
582
583source kernel/power/Kconfig
584endif
585
586config SECCOMP
587	bool "Enable seccomp to safely compute untrusted bytecode"
588	depends on PROC_FS
589	default y
590	help
591	  This kernel feature is useful for number crunching applications
592	  that may need to compute untrusted bytecode during their
593	  execution. By using pipes or other transports made available to
594	  the process as file descriptors supporting the read/write
595	  syscalls, it's possible to isolate those applications in
596	  their own address space using seccomp. Once seccomp is
597	  enabled via /proc/<pid>/seccomp, it cannot be disabled
598	  and the task is only allowed to execute a few safe syscalls
599	  defined by each seccomp mode.
600
601	  If unsure, say Y. Only embedded should say N here.
602
603endmenu
604
605config ISA_DMA_API
606	bool
607	default !PPC_ISERIES || PCI
608
609menu "Bus options"
610
611config ISA
612	bool "Support for ISA-bus hardware"
613	depends on PPC_PREP || PPC_CHRP
614	select PPC_I8259
615	help
616	  Find out whether you have ISA slots on your motherboard.  ISA is the
617	  name of a bus system, i.e. the way the CPU talks to the other stuff
618	  inside your box.  If you have an Apple machine, say N here; if you
619	  have an IBM RS/6000 or pSeries machine or a PReP machine, say Y.  If
620	  you have an embedded board, consult your board documentation.
621
622config ZONE_DMA
623	bool
624	default y
625
626config GENERIC_ISA_DMA
627	bool
628	depends on PPC64 || POWER4 || 6xx && !CPM2
629	default y
630
631config PPC_INDIRECT_PCI
632	bool
633	depends on PCI
634	default y if 40x || 44x
635	default n
636
637config EISA
638	bool
639
640config SBUS
641	bool
642
643config FSL_SOC
644	bool
645
646config FSL_PCI
647 	bool
648	select PPC_INDIRECT_PCI
649	select PCI_QUIRKS
650
651config 4xx_SOC
652	bool
653
654config FSL_LBC
655	bool
656	help
657	  Freescale Localbus support
658
659config FSL_GTM
660	bool
661	depends on PPC_83xx || QUICC_ENGINE || CPM2
662	help
663	  Freescale General-purpose Timers support
664
665# Yes MCA RS/6000s exist but Linux-PPC does not currently support any
666config MCA
667	bool
668
669# Platforms that what PCI turned unconditionally just do select PCI
670# in their config node.  Platforms that want to choose at config
671# time should select PPC_PCI_CHOICE
672config PPC_PCI_CHOICE
673	bool
674
675config PCI
676	bool "PCI support" if PPC_PCI_CHOICE
677	default y if !40x && !CPM2 && !8xx && !PPC_83xx \
678		&& !PPC_85xx && !PPC_86xx
679	default PCI_PERMEDIA if !4xx && !CPM2 && !8xx
680	default PCI_QSPAN if !4xx && !CPM2 && 8xx
681	select ARCH_SUPPORTS_MSI
682	help
683	  Find out whether your system includes a PCI bus. PCI is the name of
684	  a bus system, i.e. the way the CPU talks to the other stuff inside
685	  your box.  If you say Y here, the kernel will include drivers and
686	  infrastructure code to support PCI bus devices.
687
688config PCI_DOMAINS
689	def_bool PCI
690
691config PCI_SYSCALL
692	def_bool PCI
693
694config PCI_QSPAN
695	bool "QSpan PCI"
696	depends on !4xx && !CPM2 && 8xx
697	select PPC_I8259
698	help
699	  Say Y here if you have a system based on a Motorola 8xx-series
700	  embedded processor with a QSPAN PCI interface, otherwise say N.
701
702config PCI_8260
703	bool
704	depends on PCI && 8260
705	select PPC_INDIRECT_PCI
706	default y
707
708config 8260_PCI9
709	bool "Enable workaround for MPC826x erratum PCI 9"
710	depends on PCI_8260 && !8272
711	default y
712
713choice
714	prompt "IDMA channel for PCI 9 workaround"
715	depends on 8260_PCI9
716
717config 8260_PCI9_IDMA1
718	bool "IDMA1"
719
720config 8260_PCI9_IDMA2
721	bool "IDMA2"
722
723config 8260_PCI9_IDMA3
724	bool "IDMA3"
725
726config 8260_PCI9_IDMA4
727	bool "IDMA4"
728
729endchoice
730
731source "drivers/pci/pcie/Kconfig"
732
733source "drivers/pci/Kconfig"
734
735source "drivers/pcmcia/Kconfig"
736
737source "drivers/pci/hotplug/Kconfig"
738
739config HAS_RAPIDIO
740	bool
741	default n
742
743config RAPIDIO
744	bool "RapidIO support"
745	depends on HAS_RAPIDIO
746	help
747	  If you say Y here, the kernel will include drivers and
748	  infrastructure code to support RapidIO interconnect devices.
749
750source "drivers/rapidio/Kconfig"
751
752endmenu
753
754menu "Advanced setup"
755	depends on PPC32
756
757config ADVANCED_OPTIONS
758	bool "Prompt for advanced kernel configuration options"
759	help
760	  This option will enable prompting for a variety of advanced kernel
761	  configuration options.  These options can cause the kernel to not
762	  work if they are set incorrectly, but can be used to optimize certain
763	  aspects of kernel memory management.
764
765	  Unless you know what you are doing, say N here.
766
767comment "Default settings for advanced configuration options are used"
768	depends on !ADVANCED_OPTIONS
769
770config LOWMEM_SIZE_BOOL
771	bool "Set maximum low memory"
772	depends on ADVANCED_OPTIONS
773	help
774	  This option allows you to set the maximum amount of memory which
775	  will be used as "low memory", that is, memory which the kernel can
776	  access directly, without having to set up a kernel virtual mapping.
777	  This can be useful in optimizing the layout of kernel virtual
778	  memory.
779
780	  Say N here unless you know what you are doing.
781
782config LOWMEM_SIZE
783	hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
784	default "0x30000000"
785
786config LOWMEM_CAM_NUM_BOOL
787	bool "Set number of CAMs to use to map low memory"
788	depends on ADVANCED_OPTIONS && FSL_BOOKE
789	help
790	  This option allows you to set the maximum number of CAM slots that
791	  will be used to map low memory.  There are a limited number of slots
792	  available and even more limited number that will fit in the L1 MMU.
793	  However, using more entries will allow mapping more low memory.  This
794	  can be useful in optimizing the layout of kernel virtual memory.
795
796	  Say N here unless you know what you are doing.
797
798config LOWMEM_CAM_NUM
799	depends on FSL_BOOKE
800	int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL
801	default 3
802
803config RELOCATABLE
804	bool "Build a relocatable kernel (EXPERIMENTAL)"
805	depends on EXPERIMENTAL && ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE
806	help
807	  This builds a kernel image that is capable of running at the
808	  location the kernel is loaded at (some alignment restrictions may
809	  exist).
810
811	  One use is for the kexec on panic case where the recovery kernel
812	  must live at a different physical address than the primary
813	  kernel.
814
815	  Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address
816	  it has been loaded at and the compile time physical addresses
817	  CONFIG_PHYSICAL_START is ignored.  However CONFIG_PHYSICAL_START
818	  setting can still be useful to bootwrappers that need to know the
819	  load location of the kernel (eg. u-boot/mkimage).
820
821config PAGE_OFFSET_BOOL
822	bool "Set custom page offset address"
823	depends on ADVANCED_OPTIONS
824	help
825	  This option allows you to set the kernel virtual address at which
826	  the kernel will map low memory.  This can be useful in optimizing
827	  the virtual memory layout of the system.
828
829	  Say N here unless you know what you are doing.
830
831config PAGE_OFFSET
832	hex "Virtual address of memory base" if PAGE_OFFSET_BOOL
833	default "0xc0000000"
834
835config KERNEL_START_BOOL
836	bool "Set custom kernel base address"
837	depends on ADVANCED_OPTIONS
838	help
839	  This option allows you to set the kernel virtual address at which
840	  the kernel will be loaded.  Normally this should match PAGE_OFFSET
841	  however there are times (like kdump) that one might not want them
842	  to be the same.
843
844	  Say N here unless you know what you are doing.
845
846config KERNEL_START
847	hex "Virtual address of kernel base" if KERNEL_START_BOOL
848	default PAGE_OFFSET if PAGE_OFFSET_BOOL
849	default "0xc2000000" if CRASH_DUMP
850	default "0xc0000000"
851
852config PHYSICAL_START_BOOL
853	bool "Set physical address where the kernel is loaded"
854	depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE
855	help
856	  This gives the physical address where the kernel is loaded.
857
858	  Say N here unless you know what you are doing.
859
860config PHYSICAL_START
861	hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL
862	default "0x02000000" if PPC_STD_MMU && CRASH_DUMP
863	default "0x00000000"
864
865config PHYSICAL_ALIGN
866	hex
867	default "0x04000000" if FSL_BOOKE
868	help
869	  This value puts the alignment restrictions on physical address
870	  where kernel is loaded and run from. Kernel is compiled for an
871	  address which meets above alignment restriction.
872
873config TASK_SIZE_BOOL
874	bool "Set custom user task size"
875	depends on ADVANCED_OPTIONS
876	help
877	  This option allows you to set the amount of virtual address space
878	  allocated to user tasks.  This can be useful in optimizing the
879	  virtual memory layout of the system.
880
881	  Say N here unless you know what you are doing.
882
883config TASK_SIZE
884	hex "Size of user task space" if TASK_SIZE_BOOL
885	default "0x80000000" if PPC_PREP || PPC_8xx
886	default "0xc0000000"
887
888config CONSISTENT_SIZE_BOOL
889	bool "Set custom consistent memory pool size"
890	depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
891	help
892	  This option allows you to set the size of the
893	  consistent memory pool.  This pool of virtual memory
894	  is used to make consistent memory allocations.
895
896config CONSISTENT_SIZE
897	hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
898	default "0x00200000" if NOT_COHERENT_CACHE
899
900config PIN_TLB
901	bool "Pinned Kernel TLBs (860 ONLY)"
902	depends on ADVANCED_OPTIONS && 8xx
903endmenu
904
905if PPC64
906config RELOCATABLE
907	bool "Build a relocatable kernel"
908	help
909	  This builds a kernel image that is capable of running anywhere
910	  in the RMA (real memory area) at any 16k-aligned base address.
911	  The kernel is linked as a position-independent executable (PIE)
912	  and contains dynamic relocations which are processed early
913	  in the bootup process.
914
915	  One use is for the kexec on panic case where the recovery kernel
916	  must live at a different physical address than the primary
917	  kernel.
918
919config PAGE_OFFSET
920	hex
921	default "0xc000000000000000"
922config KERNEL_START
923	hex
924	default "0xc000000000000000"
925config PHYSICAL_START
926	hex
927	default "0x00000000"
928endif
929
930source "net/Kconfig"
931
932source "drivers/Kconfig"
933
934source "fs/Kconfig"
935
936source "arch/powerpc/sysdev/qe_lib/Kconfig"
937
938source "lib/Kconfig"
939
940source "arch/powerpc/Kconfig.debug"
941
942source "security/Kconfig"
943
944config KEYS_COMPAT
945	bool
946	depends on COMPAT && KEYS
947	default y
948
949source "crypto/Kconfig"
950
951config PPC_CLOCK
952	bool
953	default n
954	select HAVE_CLK
955
956config PPC_LIB_RHEAP
957	bool
958
959source "arch/powerpc/kvm/Kconfig"
960