1 source "arch/powerpc/platforms/Kconfig.cputype"
15 config ARCH_PHYS_ADDR_T_64BIT
16 def_bool PPC64 || PHYS_64BIT
18 config ARCH_DMA_ADDR_T_64BIT
19 def_bool ARCH_PHYS_ADDR_T_64BIT
25 config HAVE_SETUP_PER_CPU_AREA
28 config NEED_PER_CPU_EMBED_FIRST_CHUNK
32 int "Number of virtual interrupt numbers"
36 This defines the number of virtual interrupt numbers the kernel
37 can manage. Virtual interrupt numbers are what you see in
38 /proc/interrupts. If you configure your system to have too few,
39 drivers will fail to load or worse - handle with care.
41 config STACKTRACE_SUPPORT
45 config TRACE_IRQFLAGS_SUPPORT
49 config LOCKDEP_SUPPORT
53 config RWSEM_GENERIC_SPINLOCK
56 config RWSEM_XCHGADD_ALGORITHM
60 config GENERIC_LOCKBREAK
63 depends on SMP && PREEMPT
65 config ARCH_HAS_ILOG2_U32
69 config ARCH_HAS_ILOG2_U64
73 config GENERIC_HWEIGHT
77 config ARCH_HAS_DMA_SET_COHERENT_MASK
84 # Please keep this list sorted alphabetically.
86 select ARCH_HAS_DEVMEM_IS_ALLOWED
87 select ARCH_HAS_DMA_SET_COHERENT_MASK
88 select ARCH_HAS_ELF_RANDOMIZE
89 select ARCH_HAS_GCOV_PROFILE_ALL
90 select ARCH_HAS_RAW_COPY_USER
91 select ARCH_HAS_SCALED_CPUTIME if VIRT_CPU_ACCOUNTING_NATIVE
92 select ARCH_HAS_SG_CHAIN
93 select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
94 select ARCH_HAS_UBSAN_SANITIZE_ALL
95 select ARCH_HAVE_NMI_SAFE_CMPXCHG
96 select ARCH_MIGHT_HAVE_PC_PARPORT
97 select ARCH_MIGHT_HAVE_PC_SERIO
98 select ARCH_SUPPORTS_ATOMIC_RMW
99 select ARCH_SUPPORTS_DEFERRED_STRUCT_PAGE_INIT
100 select ARCH_USE_BUILTIN_BSWAP
101 select ARCH_USE_CMPXCHG_LOCKREF if PPC64
102 select ARCH_WANT_IPC_PARSE_VERSION
104 select BUILDTIME_EXTABLE_SORT
105 select CLONE_BACKWARDS
106 select DCACHE_WORD_ACCESS if PPC64 && CPU_LITTLE_ENDIAN
107 select EDAC_ATOMIC_SCRUB
109 select GENERIC_ATOMIC64 if PPC32
110 select GENERIC_CLOCKEVENTS
111 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
112 select GENERIC_CMOS_UPDATE
113 select GENERIC_CPU_AUTOPROBE
114 select GENERIC_IRQ_SHOW
115 select GENERIC_IRQ_SHOW_LEVEL
116 select GENERIC_SMP_IDLE_THREAD
117 select GENERIC_STRNCPY_FROM_USER
118 select GENERIC_STRNLEN_USER
119 select GENERIC_TIME_VSYSCALL_OLD
120 select HAVE_ARCH_AUDITSYSCALL
121 select HAVE_ARCH_HARDENED_USERCOPY
122 select HAVE_ARCH_JUMP_LABEL
123 select HAVE_ARCH_KGDB
124 select HAVE_ARCH_SECCOMP_FILTER
125 select HAVE_ARCH_TRACEHOOK
126 select HAVE_CBPF_JIT if !PPC64
127 select HAVE_CONTEXT_TRACKING if PPC64
128 select HAVE_DEBUG_KMEMLEAK
129 select HAVE_DEBUG_STACKOVERFLOW
130 select HAVE_DMA_API_DEBUG
131 select HAVE_DYNAMIC_FTRACE
132 select HAVE_DYNAMIC_FTRACE_WITH_REGS if MPROFILE_KERNEL
133 select HAVE_EBPF_JIT if PPC64
134 select HAVE_EFFICIENT_UNALIGNED_ACCESS if !(CPU_LITTLE_ENDIAN && POWER7_CPU)
135 select HAVE_FTRACE_MCOUNT_RECORD
136 select HAVE_FUNCTION_GRAPH_TRACER
137 select HAVE_FUNCTION_TRACER
138 select HAVE_GCC_PLUGINS
139 select HAVE_GENERIC_RCU_GUP
140 select HAVE_HW_BREAKPOINT if PERF_EVENTS && (PPC_BOOK3S || PPC_8xx)
142 select HAVE_IOREMAP_PROT
143 select HAVE_IRQ_EXIT_ON_IRQ_STACK
144 select HAVE_KERNEL_GZIP
146 select HAVE_KRETPROBES
147 select HAVE_LIVEPATCH if HAVE_DYNAMIC_FTRACE_WITH_REGS
149 select HAVE_MEMBLOCK_NODE_MAP
150 select HAVE_MOD_ARCH_SPECIFIC
151 select HAVE_NMI if PERF_EVENTS
153 select HAVE_OPTPROBES if PPC64
154 select HAVE_PERF_EVENTS
155 select HAVE_PERF_EVENTS_NMI if PPC64
156 select HAVE_PERF_REGS
157 select HAVE_PERF_USER_STACK_DUMP
158 select HAVE_RCU_TABLE_FREE if SMP
159 select HAVE_REGS_AND_STACK_ACCESS_API
160 select HAVE_SYSCALL_TRACEPOINTS
161 select HAVE_VIRT_CPU_ACCOUNTING
163 select IRQ_FORCED_THREADING
164 select MODULES_USE_ELF_RELA
167 select OF_EARLY_FLATTREE
168 select OF_RESERVED_MEM
169 select OLD_SIGACTION if PPC32
170 select OLD_SIGSUSPEND
172 select SYSCTL_EXCEPTION_TRACE
173 select VIRT_TO_BUS if !PPC64
175 # Please keep this list sorted alphabetically.
192 select COMPAT_BINFMT_ELF
193 select ARCH_WANT_OLD_COMPAT_IPC
194 select COMPAT_OLD_SIGACTION
196 config SYSVIPC_COMPAT
198 depends on COMPAT && SYSVIPC
201 # All PPC32s use generic nvram driver through ppc_md
206 config SCHED_OMIT_FRAME_POINTER
210 config ARCH_MAY_HAVE_PC_FDC
214 config PPC_UDBG_16550
218 config GENERIC_TBSYNC
220 default y if PPC32 && SMP
232 config SYS_SUPPORTS_APM_EMULATION
233 default y if PMAC_APM_EMU
239 Used to allow a board to specify it wants an ePAPR compliant wrapper.
242 config DEFAULT_UIMAGE
245 Used to allow a board to specify it wants a uImage built by default
248 config ARCH_HIBERNATION_POSSIBLE
252 config ARCH_SUSPEND_POSSIBLE
254 depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx || \
255 (PPC_85xx && !PPC_E500MC) || PPC_86xx || PPC_PSERIES \
258 config PPC_DCR_NATIVE
268 depends on PPC_DCR_NATIVE || PPC_DCR_MMIO
271 config PPC_OF_PLATFORM_PCI
274 depends on PPC64 # not supported on 32 bits yet
277 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
278 depends on PPC32 || PPC_STD_MMU_64
281 config ARCH_SUPPORTS_UPROBES
284 config PPC_ADV_DEBUG_REGS
286 depends on 40x || BOOKE
289 config PPC_ADV_DEBUG_IACS
291 depends on PPC_ADV_DEBUG_REGS
295 config PPC_ADV_DEBUG_DACS
297 depends on PPC_ADV_DEBUG_REGS
300 config PPC_ADV_DEBUG_DVCS
302 depends on PPC_ADV_DEBUG_REGS
306 config PPC_ADV_DEBUG_DAC_RANGE
308 depends on PPC_ADV_DEBUG_REGS && 44x
311 config PPC_EMULATE_SSTEP
313 default y if KPROBES || UPROBES || XMON || HAVE_HW_BREAKPOINT
319 config PGTABLE_LEVELS
322 default 3 if PPC_64K_PAGES && !PPC_BOOK3S_64
325 source "init/Kconfig"
327 source "kernel/Kconfig.freezer"
329 source "arch/powerpc/sysdev/Kconfig"
330 source "arch/powerpc/platforms/Kconfig"
332 menu "Kernel options"
335 bool "High memory support"
338 source kernel/Kconfig.hz
339 source kernel/Kconfig.preempt
340 source "fs/Kconfig.binfmt"
342 config HUGETLB_PAGE_SIZE_VARIABLE
344 depends on HUGETLB_PAGE
347 config MATH_EMULATION
348 bool "Math emulation"
349 depends on 4xx || 8xx || PPC_MPC832x || BOOKE
351 Some PowerPC chips designed for embedded applications do not have
352 a floating-point unit and therefore do not implement the
353 floating-point instructions in the PowerPC instruction set. If you
354 say Y here, the kernel will include code to emulate a floating-point
355 unit, which will allow programs that use floating-point
358 This is also useful to emulate missing (optional) instructions
359 such as fsqrt on cores that do have an FPU but do not implement
360 them (such as Freescale BookE).
363 prompt "Math emulation options"
364 default MATH_EMULATION_FULL
365 depends on MATH_EMULATION
367 config MATH_EMULATION_FULL
368 bool "Emulate all the floating point instructions"
370 Select this option will enable the kernel to support to emulate
371 all the floating point instructions. If your SoC doesn't have
372 a FPU, you should select this.
374 config MATH_EMULATION_HW_UNIMPLEMENTED
375 bool "Just emulate the FPU unimplemented instructions"
377 Select this if you know there does have a hardware FPU on your
378 SoC, but some floating point instructions are not implemented by that.
382 config PPC_TRANSACTIONAL_MEM
383 bool "Transactional Memory support for POWERPC"
384 depends on PPC_BOOK3S_64
390 Support user-mode Transactional Memory on POWERPC.
392 config DISABLE_MPROFILE_KERNEL
393 bool "Disable use of mprofile-kernel for kernel tracing"
394 depends on PPC64 && CPU_LITTLE_ENDIAN
397 Selecting this options disables use of the mprofile-kernel ABI for
398 kernel tracing. That will cause options such as live patching
399 (CONFIG_LIVEPATCH) which depend on CONFIG_DYNAMIC_FTRACE_WITH_REGS to
402 If you have a toolchain which supports mprofile-kernel, then you can
403 disable this. Otherwise leave it enabled. If you're not sure, say
406 config MPROFILE_KERNEL
407 depends on PPC64 && CPU_LITTLE_ENDIAN
408 def_bool !DISABLE_MPROFILE_KERNEL
410 config USE_THIN_ARCHIVES
411 bool "Build the kernel using thin archives"
415 Build the kernel using thin archives.
416 If you're unsure say N.
422 bool "SWIOTLB support"
426 Support for IO bounce buffering for systems without an IOMMU.
427 This allows us to DMA to the full physical address space on
428 platforms where the size of a physical address is larger
429 than the bus address. Not all platforms support this.
432 bool "Support for enabling/disabling CPUs"
433 depends on SMP && (PPC_PSERIES || \
434 PPC_PMAC || PPC_POWERNV || FSL_SOC_BOOKE)
436 Say Y here to be able to disable and re-enable individual
437 CPUs at runtime on SMP machines.
439 Say N if you are unsure.
441 config ARCH_CPU_PROBE_RELEASE
443 depends on HOTPLUG_CPU
445 config ARCH_ENABLE_MEMORY_HOTPLUG
448 config ARCH_HAS_WALK_MEMORY
451 config ARCH_ENABLE_MEMORY_HOTREMOVE
454 config PPC64_SUPPORTS_MEMORY_FAILURE
455 bool "Add support for memory hwpoison"
456 depends on PPC_BOOK3S_64
457 default "y" if PPC_POWERNV
458 select ARCH_SUPPORTS_MEMORY_FAILURE
461 bool "kexec system call"
462 depends on (PPC_BOOK3S || FSL_BOOKE || (44x && !SMP)) || PPC_BOOK3E
465 kexec is a system call that implements the ability to shutdown your
466 current kernel, and to start another kernel. It is like a reboot
467 but it is independent of the system firmware. And like a reboot
468 you can start any kernel with it, not just Linux.
470 The name comes from the similarity to the exec system call.
472 It is an ongoing process to be certain the hardware in a machine
473 is properly shutdown, so do not be surprised if this code does not
474 initially work for you. As of this writing the exact hardware
475 interface is strongly in flux, so no good recommendation can be
479 bool "kexec file based system call"
481 select HAVE_IMA_KEXEC
485 depends on CRYPTO_SHA256=y
487 This is a new version of the kexec system call. This call is
488 file based and takes in file descriptors as system call arguments
489 for kernel and initramfs as opposed to a list of segments as is the
490 case for the older kexec call.
493 bool "Build a relocatable kernel"
494 depends on (PPC64 && !COMPILE_TEST) || (FLATMEM && (44x || FSL_BOOKE))
495 select NONSTATIC_KERNEL
496 select MODULE_REL_CRCS if MODVERSIONS
498 This builds a kernel image that is capable of running at the
499 location the kernel is loaded at. For ppc32, there is no any
500 alignment restrictions, and this feature is a superset of
501 DYNAMIC_MEMSTART and hence overrides it. For ppc64, we should use
502 16k-aligned base address. The kernel is linked as a
503 position-independent executable (PIE) and contains dynamic relocations
504 which are processed early in the bootup process.
506 One use is for the kexec on panic case where the recovery kernel
507 must live at a different physical address than the primary
510 Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address
511 it has been loaded at and the compile time physical addresses
512 CONFIG_PHYSICAL_START is ignored. However CONFIG_PHYSICAL_START
513 setting can still be useful to bootwrappers that need to know the
514 load address of the kernel (eg. u-boot/mkimage).
516 config RELOCATABLE_TEST
517 bool "Test relocatable kernel"
518 depends on (PPC64 && RELOCATABLE)
521 This runs the relocatable kernel at the address it was initially
522 loaded at, which tends to be non-zero and therefore test the
526 bool "Build a kdump crash kernel"
527 depends on PPC64 || 6xx || FSL_BOOKE || (44x && !SMP)
528 select RELOCATABLE if (PPC64 && !COMPILE_TEST) || 44x || FSL_BOOKE
530 Build a kernel suitable for use as a kdump capture kernel.
531 The same kernel binary can be used as production kernel and dump
535 bool "Firmware-assisted dump"
536 depends on PPC64 && PPC_RTAS && CRASH_DUMP && KEXEC_CORE
538 A robust mechanism to get reliable kernel crash dump with
539 assistance from firmware. This approach does not use kexec,
540 instead firmware assists in booting the kdump kernel
541 while preserving memory contents. Firmware-assisted dump
542 is meant to be a kdump replacement offering robustness and
543 speed not possible without system firmware assistance.
548 bool "Distribute interrupts on all CPUs by default"
551 This option gives the kernel permission to distribute IRQs across
552 multiple CPUs. Saying N here will route all IRQs to the first
553 CPU. Generally saying Y is safe, although some problems have been
554 reported with SMP Power Macintoshes with this option enabled.
559 default y if SMP && PPC_PSERIES
565 depends on NEED_MULTIPLE_NODES
567 config USE_PERCPU_NUMA_NODE_ID
571 config HAVE_MEMORYLESS_NODES
575 config ARCH_SELECT_MEMORY_MODEL
579 config ARCH_FLATMEM_ENABLE
581 depends on (PPC64 && !NUMA) || PPC32
583 config ARCH_SPARSEMEM_ENABLE
586 select SPARSEMEM_VMEMMAP_ENABLE
588 config ARCH_SPARSEMEM_DEFAULT
590 depends on (SMP && PPC_PSERIES) || PPC_PS3
592 config SYS_SUPPORTS_HUGETLBFS
595 config ILLEGAL_POINTER_VALUE
597 # This is roughly half way between the top of user space and the bottom
598 # of kernel space, which seems about as good as we can get.
599 default 0x5deadbeef0000000 if PPC64
604 config ARCH_MEMORY_PROBE
606 depends on MEMORY_HOTPLUG
608 # Some NUMA nodes have memory ranges that span
609 # other nodes. Even though a pfn is valid and
610 # between a node's start and end pfns, it may not
611 # reside on that node. See memmap_init_zone()
613 config NODES_SPAN_OTHER_NODES
615 depends on NEED_MULTIPLE_NODES
618 bool "Using standard binutils settings"
622 Turning this option off allows you to select 256KB PAGE_SIZE on 44x.
623 Note, that kernel will be able to run only those applications,
624 which had been compiled using binutils later than 2.17.50.0.3 with
625 '-zmax-page-size' set to 256K (the default is 64K). Or, if using
626 the older binutils, you can patch them with a trivial patch, which
627 changes the ELF_MAXPAGESIZE definition from 0x10000 to 0x40000.
633 Select the kernel logical page size. Increasing the page size
634 will reduce software overhead at each page boundary, allow
635 hardware prefetch mechanisms to be more effective, and allow
636 larger dma transfers increasing IO efficiency and reducing
637 overhead. However the utilization of memory will increase.
638 For example, each cached file will using a multiple of the
639 page size to hold its contents and the difference between the
640 end of file and the end of page is wasted.
642 Some dedicated systems, such as software raid serving with
643 accelerated calculations, have shown significant increases.
645 If you configure a 64 bit kernel for 64k pages but the
646 processor does not support them, then the kernel will simulate
647 them with 4k pages, loading them on demand, but with the
648 reduced software overhead and larger internal fragmentation.
649 For the 32 bit kernel, a large page option will not be offered
650 unless it is supported by the configured processor.
652 If unsure, choose 4K_PAGES.
656 select HAVE_ARCH_SOFT_DIRTY if PPC_BOOK3S_64
660 depends on 44x || PPC_8xx
664 depends on !PPC_FSL_BOOK3E && (44x || PPC_STD_MMU_64 || PPC_BOOK3E_64)
665 select HAVE_ARCH_SOFT_DIRTY if PPC_BOOK3S_64
667 config PPC_256K_PAGES
668 bool "256k page size"
669 depends on 44x && !STDBINUTILS
671 Make the page size 256k.
673 As the ELF standard only requires alignment to support page
674 sizes up to 64k, you will need to compile all of your user
675 space applications with a non-standard binutils settings
676 (see the STDBINUTILS description for details).
678 Say N unless you know what you are doing.
682 config FORCE_MAX_ZONEORDER
683 int "Maximum zone order"
684 range 8 9 if PPC64 && PPC_64K_PAGES
685 default "9" if PPC64 && PPC_64K_PAGES
686 range 13 13 if PPC64 && !PPC_64K_PAGES
687 default "13" if PPC64 && !PPC_64K_PAGES
688 range 9 64 if PPC32 && PPC_16K_PAGES
689 default "9" if PPC32 && PPC_16K_PAGES
690 range 7 64 if PPC32 && PPC_64K_PAGES
691 default "7" if PPC32 && PPC_64K_PAGES
692 range 5 64 if PPC32 && PPC_256K_PAGES
693 default "5" if PPC32 && PPC_256K_PAGES
697 The kernel memory allocator divides physically contiguous memory
698 blocks into "zones", where each zone is a power of two number of
699 pages. This option selects the largest power of two that the kernel
700 keeps in the memory allocator. If you need to allocate very large
701 blocks of physically contiguous memory, then you may need to
704 This config option is actually maximum order plus one. For example,
705 a value of 11 means that the largest free memory block is 2^10 pages.
707 The page size is not necessarily 4KB. For example, on 64-bit
708 systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES. Keep
709 this in mind when choosing a value for this option.
711 config PPC_SUBPAGE_PROT
712 bool "Support setting protections for 4k subpages"
713 depends on PPC_STD_MMU_64 && PPC_64K_PAGES
715 This option adds support for a system call to allow user programs
716 to set access permissions (read/write, readonly, or no access)
717 on the 4k subpages of each 64k page.
719 config PPC_COPRO_BASE
724 bool "SMT (Hyperthreading) scheduler support"
725 depends on PPC64 && SMP
727 SMT scheduler support improves the CPU scheduler's decision making
728 when dealing with POWER5 cpus at a cost of slightly increased
729 overhead in some places. If unsure say N here.
731 config PPC_DENORMALISATION
732 bool "PowerPC denormalisation exception handling"
733 depends on PPC_BOOK3S_64
734 default "y" if PPC_POWERNV
736 Add support for handling denormalisation of single precision
737 values. Useful for bare metal only. If unsure say Y here.
740 bool "Default bootloader kernel arguments"
743 string "Initial kernel command string"
744 depends on CMDLINE_BOOL
745 default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
747 On some platforms, there is currently no way for the boot loader to
748 pass arguments to the kernel. For these platforms, you can supply
749 some command-line options at build time by entering them here. In
750 most cases you will need to specify the root device here.
753 bool "Always use the default kernel command string"
754 depends on CMDLINE_BOOL
756 Always use the default kernel command string, even if the boot
757 loader passes other arguments to the kernel.
758 This is useful if you cannot or don't want to change the
759 command-line options your boot loader passes to the kernel.
762 string "Additional default image types"
764 List additional targets to be built by the bootwrapper here (separated
765 by spaces). This is useful for targets that depend of device tree
766 files in the .dts directory.
768 Targets in this list will be build as part of the default build
769 target, or when the user does a 'make zImage' or a
770 'make zImage.initrd'.
772 If unsure, leave blank
774 config ARCH_WANTS_FREEZER_CONTROL
778 source kernel/power/Kconfig
781 bool "Enable seccomp to safely compute untrusted bytecode"
785 This kernel feature is useful for number crunching applications
786 that may need to compute untrusted bytecode during their
787 execution. By using pipes or other transports made available to
788 the process as file descriptors supporting the read/write
789 syscalls, it's possible to isolate those applications in
790 their own address space using seccomp. Once seccomp is
791 enabled via /proc/<pid>/seccomp, it cannot be disabled
792 and the task is only allowed to execute a few safe syscalls
793 defined by each seccomp mode.
795 If unsure, say Y. Only embedded should say N here.
806 bool "Support for ISA-bus hardware"
810 Find out whether you have ISA slots on your motherboard. ISA is the
811 name of a bus system, i.e. the way the CPU talks to the other stuff
812 inside your box. If you have an Apple machine, say N here; if you
813 have an IBM RS/6000 or pSeries machine, say Y. If you have an
814 embedded board, consult your board documentation.
820 config NEED_DMA_MAP_STATE
821 def_bool (PPC64 || NOT_COHERENT_CACHE)
823 config NEED_SG_DMA_LENGTH
826 config GENERIC_ISA_DMA
828 depends on ISA_DMA_API
831 config PPC_INDIRECT_PCI
834 default y if 40x || 44x
848 select PPC_INDIRECT_PCI
854 depends on SUSPEND && (PPC_85xx || PPC_86xx)
856 Freescale MPC85xx/MPC86xx power management controller support
857 (suspend/resume). For MPC83xx see platforms/83xx/suspend.c
862 depends on SUSPEND && (44x || 40x)
864 PPC4xx Clock Power Management (CPM) support (suspend/resume).
865 It also enables support for two different idle states (idle-wait
872 bool "Freescale Local Bus support"
874 Enables reporting of errors from the Freescale local bus
875 controller. Also contains some common code used by
876 drivers for specific local bus peripherals.
880 depends on PPC_83xx || QUICC_ENGINE || CPM2
882 Freescale General-purpose Timers support
884 # Yes MCA RS/6000s exist but Linux-PPC does not currently support any
888 # Platforms that what PCI turned unconditionally just do select PCI
889 # in their config node. Platforms that want to choose at config
890 # time should select PPC_PCI_CHOICE
891 config PPC_PCI_CHOICE
895 bool "PCI support" if PPC_PCI_CHOICE
896 default y if !40x && !CPM2 && !8xx && !PPC_83xx \
897 && !PPC_85xx && !PPC_86xx && !GAMECUBE_COMMON
898 default PCI_QSPAN if !4xx && !CPM2 && 8xx
899 select GENERIC_PCI_IOMAP
901 Find out whether your system includes a PCI bus. PCI is the name of
902 a bus system, i.e. the way the CPU talks to the other stuff inside
903 your box. If you say Y here, the kernel will include drivers and
904 infrastructure code to support PCI bus devices.
914 depends on !4xx && !CPM2 && 8xx
917 Say Y here if you have a system based on a Motorola 8xx-series
918 embedded processor with a QSPAN PCI interface, otherwise say N.
922 depends on PCI && 8260
923 select PPC_INDIRECT_PCI
926 source "drivers/pci/Kconfig"
928 source "drivers/pcmcia/Kconfig"
935 tristate "RapidIO support"
936 depends on HAS_RAPIDIO || PCI
938 If you say Y here, the kernel will include drivers and
939 infrastructure code to support RapidIO interconnect devices.
942 bool "Freescale Embedded SRIO Controller support"
943 depends on RAPIDIO = y && HAS_RAPIDIO
946 Include support for RapidIO controller on Freescale embedded
947 processors (MPC8548, MPC8641, etc).
949 source "drivers/rapidio/Kconfig"
953 config NONSTATIC_KERNEL
957 menu "Advanced setup"
960 config ADVANCED_OPTIONS
961 bool "Prompt for advanced kernel configuration options"
963 This option will enable prompting for a variety of advanced kernel
964 configuration options. These options can cause the kernel to not
965 work if they are set incorrectly, but can be used to optimize certain
966 aspects of kernel memory management.
968 Unless you know what you are doing, say N here.
970 comment "Default settings for advanced configuration options are used"
971 depends on !ADVANCED_OPTIONS
973 config LOWMEM_SIZE_BOOL
974 bool "Set maximum low memory"
975 depends on ADVANCED_OPTIONS
977 This option allows you to set the maximum amount of memory which
978 will be used as "low memory", that is, memory which the kernel can
979 access directly, without having to set up a kernel virtual mapping.
980 This can be useful in optimizing the layout of kernel virtual
983 Say N here unless you know what you are doing.
986 hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
989 config LOWMEM_CAM_NUM_BOOL
990 bool "Set number of CAMs to use to map low memory"
991 depends on ADVANCED_OPTIONS && FSL_BOOKE
993 This option allows you to set the maximum number of CAM slots that
994 will be used to map low memory. There are a limited number of slots
995 available and even more limited number that will fit in the L1 MMU.
996 However, using more entries will allow mapping more low memory. This
997 can be useful in optimizing the layout of kernel virtual memory.
999 Say N here unless you know what you are doing.
1001 config LOWMEM_CAM_NUM
1002 depends on FSL_BOOKE
1003 int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL
1006 config DYNAMIC_MEMSTART
1007 bool "Enable page aligned dynamic load address for kernel"
1008 depends on ADVANCED_OPTIONS && FLATMEM && (FSL_BOOKE || 44x)
1009 select NONSTATIC_KERNEL
1011 This option enables the kernel to be loaded at any page aligned
1012 physical address. The kernel creates a mapping from KERNELBASE to
1013 the address where the kernel is loaded. The page size here implies
1014 the TLB page size of the mapping for kernel on the particular platform.
1015 Please refer to the init code for finding the TLB page size.
1017 DYNAMIC_MEMSTART is an easy way of implementing pseudo-RELOCATABLE
1018 kernel image, where the only restriction is the page aligned kernel
1019 load address. When this option is enabled, the compile time physical
1020 address CONFIG_PHYSICAL_START is ignored.
1022 This option is overridden by CONFIG_RELOCATABLE
1024 config PAGE_OFFSET_BOOL
1025 bool "Set custom page offset address"
1026 depends on ADVANCED_OPTIONS
1028 This option allows you to set the kernel virtual address at which
1029 the kernel will map low memory. This can be useful in optimizing
1030 the virtual memory layout of the system.
1032 Say N here unless you know what you are doing.
1035 hex "Virtual address of memory base" if PAGE_OFFSET_BOOL
1036 default "0xc0000000"
1038 config KERNEL_START_BOOL
1039 bool "Set custom kernel base address"
1040 depends on ADVANCED_OPTIONS
1042 This option allows you to set the kernel virtual address at which
1043 the kernel will be loaded. Normally this should match PAGE_OFFSET
1044 however there are times (like kdump) that one might not want them
1047 Say N here unless you know what you are doing.
1050 hex "Virtual address of kernel base" if KERNEL_START_BOOL
1051 default PAGE_OFFSET if PAGE_OFFSET_BOOL
1052 default "0xc2000000" if CRASH_DUMP && !NONSTATIC_KERNEL
1053 default "0xc0000000"
1055 config PHYSICAL_START_BOOL
1056 bool "Set physical address where the kernel is loaded"
1057 depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE
1059 This gives the physical address where the kernel is loaded.
1061 Say N here unless you know what you are doing.
1063 config PHYSICAL_START
1064 hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL
1065 default "0x02000000" if PPC_STD_MMU && CRASH_DUMP && !NONSTATIC_KERNEL
1066 default "0x00000000"
1068 config PHYSICAL_ALIGN
1070 default "0x04000000" if FSL_BOOKE
1072 This value puts the alignment restrictions on physical address
1073 where kernel is loaded and run from. Kernel is compiled for an
1074 address which meets above alignment restriction.
1076 config TASK_SIZE_BOOL
1077 bool "Set custom user task size"
1078 depends on ADVANCED_OPTIONS
1080 This option allows you to set the amount of virtual address space
1081 allocated to user tasks. This can be useful in optimizing the
1082 virtual memory layout of the system.
1084 Say N here unless you know what you are doing.
1087 hex "Size of user task space" if TASK_SIZE_BOOL
1088 default "0x80000000" if PPC_8xx
1089 default "0xc0000000"
1091 config CONSISTENT_SIZE_BOOL
1092 bool "Set custom consistent memory pool size"
1093 depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
1095 This option allows you to set the size of the
1096 consistent memory pool. This pool of virtual memory
1097 is used to make consistent memory allocations.
1099 config CONSISTENT_SIZE
1100 hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
1101 default "0x00200000" if NOT_COHERENT_CACHE
1104 bool "Pinned Kernel TLBs (860 ONLY)"
1105 depends on ADVANCED_OPTIONS && 8xx
1108 bool "Pinned TLB for IMMR"
1114 # This value must have zeroes in the bottom 60 bits otherwise lots will break
1117 default "0xc000000000000000"
1120 default "0xc000000000000000"
1121 config PHYSICAL_START
1123 default "0x00000000"
1129 source "net/Kconfig"
1131 source "drivers/Kconfig"
1135 source "lib/Kconfig"
1137 source "arch/powerpc/Kconfig.debug"
1139 source "security/Kconfig"
1143 depends on COMPAT && KEYS
1146 source "crypto/Kconfig"
1148 config PPC_LIB_RHEAP
1151 source "arch/powerpc/kvm/Kconfig"
1153 source "kernel/livepatch/Kconfig"