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
83 select BUILDTIME_EXTABLE_SORT
84 select ARCH_MIGHT_HAVE_PC_PARPORT
85 select ARCH_MIGHT_HAVE_PC_SERIO
87 select ARCH_HAS_ELF_RANDOMIZE
89 select OF_EARLY_FLATTREE
90 select OF_RESERVED_MEM
91 select HAVE_FTRACE_MCOUNT_RECORD
92 select HAVE_DYNAMIC_FTRACE
93 select HAVE_DYNAMIC_FTRACE_WITH_REGS if MPROFILE_KERNEL
94 select HAVE_FUNCTION_TRACER
95 select HAVE_FUNCTION_GRAPH_TRACER
96 select HAVE_GCC_PLUGINS
97 select SYSCTL_EXCEPTION_TRACE
98 select VIRT_TO_BUS if !PPC64
100 select HAVE_IOREMAP_PROT
101 select HAVE_EFFICIENT_UNALIGNED_ACCESS if !(CPU_LITTLE_ENDIAN && POWER7_CPU)
103 select HAVE_OPTPROBES if PPC64
104 select HAVE_ARCH_KGDB
105 select HAVE_KRETPROBES
106 select HAVE_ARCH_TRACEHOOK
108 select HAVE_MEMBLOCK_NODE_MAP
109 select HAVE_DMA_API_DEBUG
111 select HAVE_DEBUG_KMEMLEAK
112 select ARCH_HAS_SG_CHAIN
113 select GENERIC_ATOMIC64 if PPC32
114 select HAVE_PERF_EVENTS
115 select HAVE_PERF_REGS
116 select HAVE_PERF_USER_STACK_DUMP
117 select HAVE_REGS_AND_STACK_ACCESS_API
118 select HAVE_HW_BREAKPOINT if PERF_EVENTS && PPC_BOOK3S_64
119 select ARCH_WANT_IPC_PARSE_VERSION
122 select GENERIC_IRQ_SHOW
123 select GENERIC_IRQ_SHOW_LEVEL
124 select IRQ_FORCED_THREADING
125 select HAVE_RCU_TABLE_FREE if SMP
126 select HAVE_SYSCALL_TRACEPOINTS
127 select HAVE_CBPF_JIT if !PPC64
128 select HAVE_EBPF_JIT if PPC64
129 select HAVE_ARCH_JUMP_LABEL
130 select ARCH_HAVE_NMI_SAFE_CMPXCHG
131 select ARCH_HAS_GCOV_PROFILE_ALL
132 select GENERIC_SMP_IDLE_THREAD
133 select GENERIC_CMOS_UPDATE
134 select GENERIC_TIME_VSYSCALL_OLD
135 select GENERIC_CLOCKEVENTS
136 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
137 select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
138 select GENERIC_STRNCPY_FROM_USER
139 select GENERIC_STRNLEN_USER
140 select HAVE_MOD_ARCH_SPECIFIC
141 select MODULES_USE_ELF_RELA
142 select CLONE_BACKWARDS
143 select ARCH_USE_BUILTIN_BSWAP
144 select OLD_SIGSUSPEND
145 select OLD_SIGACTION if PPC32
146 select HAVE_DEBUG_STACKOVERFLOW
147 select HAVE_IRQ_EXIT_ON_IRQ_STACK
148 select ARCH_USE_CMPXCHG_LOCKREF if PPC64
149 select HAVE_ARCH_AUDITSYSCALL
150 select ARCH_SUPPORTS_ATOMIC_RMW
151 select DCACHE_WORD_ACCESS if PPC64 && CPU_LITTLE_ENDIAN
153 select HAVE_GENERIC_RCU_GUP
154 select HAVE_PERF_EVENTS_NMI if PPC64
155 select HAVE_NMI if PERF_EVENTS
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 select HAVE_LIVEPATCH if HAVE_DYNAMIC_FTRACE_WITH_REGS
164 select GENERIC_CPU_AUTOPROBE
165 select HAVE_VIRT_CPU_ACCOUNTING
166 select ARCH_HAS_SCALED_CPUTIME if VIRT_CPU_ACCOUNTING_NATIVE
167 select HAVE_ARCH_HARDENED_USERCOPY
168 select HAVE_KERNEL_GZIP
169 select HAVE_CONTEXT_TRACKING if PPC64
185 select COMPAT_BINFMT_ELF
186 select ARCH_WANT_OLD_COMPAT_IPC
187 select COMPAT_OLD_SIGACTION
189 config SYSVIPC_COMPAT
191 depends on COMPAT && SYSVIPC
194 # All PPC32s use generic nvram driver through ppc_md
199 config SCHED_OMIT_FRAME_POINTER
203 config ARCH_MAY_HAVE_PC_FDC
207 config PPC_UDBG_16550
211 config GENERIC_TBSYNC
213 default y if PPC32 && SMP
225 config SYS_SUPPORTS_APM_EMULATION
226 default y if PMAC_APM_EMU
232 Used to allow a board to specify it wants an ePAPR compliant wrapper.
235 config DEFAULT_UIMAGE
238 Used to allow a board to specify it wants a uImage built by default
241 config ARCH_HIBERNATION_POSSIBLE
245 config ARCH_SUSPEND_POSSIBLE
247 depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx || \
248 (PPC_85xx && !PPC_E500MC) || PPC_86xx || PPC_PSERIES \
251 config PPC_DCR_NATIVE
261 depends on PPC_DCR_NATIVE || PPC_DCR_MMIO
264 config PPC_OF_PLATFORM_PCI
267 depends on PPC64 # not supported on 32 bits yet
270 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
271 depends on PPC32 || PPC_STD_MMU_64
274 config ARCH_SUPPORTS_UPROBES
277 config PPC_ADV_DEBUG_REGS
279 depends on 40x || BOOKE
282 config PPC_ADV_DEBUG_IACS
284 depends on PPC_ADV_DEBUG_REGS
288 config PPC_ADV_DEBUG_DACS
290 depends on PPC_ADV_DEBUG_REGS
293 config PPC_ADV_DEBUG_DVCS
295 depends on PPC_ADV_DEBUG_REGS
299 config PPC_ADV_DEBUG_DAC_RANGE
301 depends on PPC_ADV_DEBUG_REGS && 44x
304 config PPC_EMULATE_SSTEP
306 default y if KPROBES || UPROBES || XMON || HAVE_HW_BREAKPOINT
312 config PGTABLE_LEVELS
315 default 3 if PPC_64K_PAGES && !PPC_BOOK3S_64
318 source "init/Kconfig"
320 source "kernel/Kconfig.freezer"
322 source "arch/powerpc/sysdev/Kconfig"
323 source "arch/powerpc/platforms/Kconfig"
325 menu "Kernel options"
328 bool "High memory support"
331 source kernel/Kconfig.hz
332 source kernel/Kconfig.preempt
333 source "fs/Kconfig.binfmt"
335 config HUGETLB_PAGE_SIZE_VARIABLE
337 depends on HUGETLB_PAGE
340 config MATH_EMULATION
341 bool "Math emulation"
342 depends on 4xx || 8xx || PPC_MPC832x || BOOKE
344 Some PowerPC chips designed for embedded applications do not have
345 a floating-point unit and therefore do not implement the
346 floating-point instructions in the PowerPC instruction set. If you
347 say Y here, the kernel will include code to emulate a floating-point
348 unit, which will allow programs that use floating-point
351 This is also useful to emulate missing (optional) instructions
352 such as fsqrt on cores that do have an FPU but do not implement
353 them (such as Freescale BookE).
356 prompt "Math emulation options"
357 default MATH_EMULATION_FULL
358 depends on MATH_EMULATION
360 config MATH_EMULATION_FULL
361 bool "Emulate all the floating point instructions"
363 Select this option will enable the kernel to support to emulate
364 all the floating point instructions. If your SoC doesn't have
365 a FPU, you should select this.
367 config MATH_EMULATION_HW_UNIMPLEMENTED
368 bool "Just emulate the FPU unimplemented instructions"
370 Select this if you know there does have a hardware FPU on your
371 SoC, but some floating point instructions are not implemented by that.
375 config PPC_TRANSACTIONAL_MEM
376 bool "Transactional Memory support for POWERPC"
377 depends on PPC_BOOK3S_64
383 Support user-mode Transactional Memory on POWERPC.
385 config DISABLE_MPROFILE_KERNEL
386 bool "Disable use of mprofile-kernel for kernel tracing"
387 depends on PPC64 && CPU_LITTLE_ENDIAN
390 Selecting this options disables use of the mprofile-kernel ABI for
391 kernel tracing. That will cause options such as live patching
392 (CONFIG_LIVEPATCH) which depend on CONFIG_DYNAMIC_FTRACE_WITH_REGS to
395 If you have a toolchain which supports mprofile-kernel, then you can
396 disable this. Otherwise leave it enabled. If you're not sure, say
399 config MPROFILE_KERNEL
400 depends on PPC64 && CPU_LITTLE_ENDIAN
401 def_bool !DISABLE_MPROFILE_KERNEL
403 config USE_THIN_ARCHIVES
404 bool "Build the kernel using thin archives"
408 Build the kernel using thin archives.
409 If you're unsure say N.
415 bool "SWIOTLB support"
419 Support for IO bounce buffering for systems without an IOMMU.
420 This allows us to DMA to the full physical address space on
421 platforms where the size of a physical address is larger
422 than the bus address. Not all platforms support this.
425 bool "Support for enabling/disabling CPUs"
426 depends on SMP && (PPC_PSERIES || \
427 PPC_PMAC || PPC_POWERNV || FSL_SOC_BOOKE)
429 Say Y here to be able to disable and re-enable individual
430 CPUs at runtime on SMP machines.
432 Say N if you are unsure.
434 config ARCH_CPU_PROBE_RELEASE
436 depends on HOTPLUG_CPU
438 config ARCH_ENABLE_MEMORY_HOTPLUG
441 config ARCH_HAS_WALK_MEMORY
444 config ARCH_ENABLE_MEMORY_HOTREMOVE
447 config PPC64_SUPPORTS_MEMORY_FAILURE
448 bool "Add support for memory hwpoison"
449 depends on PPC_BOOK3S_64
450 default "y" if PPC_POWERNV
451 select ARCH_SUPPORTS_MEMORY_FAILURE
454 bool "kexec system call"
455 depends on (PPC_BOOK3S || FSL_BOOKE || (44x && !SMP)) || PPC_BOOK3E
458 kexec is a system call that implements the ability to shutdown your
459 current kernel, and to start another kernel. It is like a reboot
460 but it is independent of the system firmware. And like a reboot
461 you can start any kernel with it, not just Linux.
463 The name comes from the similarity to the exec system call.
465 It is an ongoing process to be certain the hardware in a machine
466 is properly shutdown, so do not be surprised if this code does not
467 initially work for you. As of this writing the exact hardware
468 interface is strongly in flux, so no good recommendation can be
472 bool "kexec file based system call"
474 select HAVE_IMA_KEXEC
478 depends on CRYPTO_SHA256=y
480 This is a new version of the kexec system call. This call is
481 file based and takes in file descriptors as system call arguments
482 for kernel and initramfs as opposed to a list of segments as is the
483 case for the older kexec call.
486 bool "Build a relocatable kernel"
487 depends on (PPC64 && !COMPILE_TEST) || (FLATMEM && (44x || FSL_BOOKE))
488 select NONSTATIC_KERNEL
489 select MODULE_REL_CRCS if MODVERSIONS
491 This builds a kernel image that is capable of running at the
492 location the kernel is loaded at. For ppc32, there is no any
493 alignment restrictions, and this feature is a superset of
494 DYNAMIC_MEMSTART and hence overrides it. For ppc64, we should use
495 16k-aligned base address. The kernel is linked as a
496 position-independent executable (PIE) and contains dynamic relocations
497 which are processed early in the bootup process.
499 One use is for the kexec on panic case where the recovery kernel
500 must live at a different physical address than the primary
503 Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address
504 it has been loaded at and the compile time physical addresses
505 CONFIG_PHYSICAL_START is ignored. However CONFIG_PHYSICAL_START
506 setting can still be useful to bootwrappers that need to know the
507 load address of the kernel (eg. u-boot/mkimage).
509 config RELOCATABLE_TEST
510 bool "Test relocatable kernel"
511 depends on (PPC64 && RELOCATABLE)
514 This runs the relocatable kernel at the address it was initially
515 loaded at, which tends to be non-zero and therefore test the
519 bool "Build a kdump crash kernel"
520 depends on PPC64 || 6xx || FSL_BOOKE || (44x && !SMP)
521 select RELOCATABLE if (PPC64 && !COMPILE_TEST) || 44x || FSL_BOOKE
523 Build a kernel suitable for use as a kdump capture kernel.
524 The same kernel binary can be used as production kernel and dump
528 bool "Firmware-assisted dump"
529 depends on PPC64 && PPC_RTAS && CRASH_DUMP && KEXEC_CORE
531 A robust mechanism to get reliable kernel crash dump with
532 assistance from firmware. This approach does not use kexec,
533 instead firmware assists in booting the kdump kernel
534 while preserving memory contents. Firmware-assisted dump
535 is meant to be a kdump replacement offering robustness and
536 speed not possible without system firmware assistance.
541 bool "Distribute interrupts on all CPUs by default"
544 This option gives the kernel permission to distribute IRQs across
545 multiple CPUs. Saying N here will route all IRQs to the first
546 CPU. Generally saying Y is safe, although some problems have been
547 reported with SMP Power Macintoshes with this option enabled.
552 default y if SMP && PPC_PSERIES
558 depends on NEED_MULTIPLE_NODES
560 config USE_PERCPU_NUMA_NODE_ID
564 config HAVE_MEMORYLESS_NODES
568 config ARCH_SELECT_MEMORY_MODEL
572 config ARCH_FLATMEM_ENABLE
574 depends on (PPC64 && !NUMA) || PPC32
576 config ARCH_SPARSEMEM_ENABLE
579 select SPARSEMEM_VMEMMAP_ENABLE
581 config ARCH_SPARSEMEM_DEFAULT
583 depends on (SMP && PPC_PSERIES) || PPC_PS3
585 config SYS_SUPPORTS_HUGETLBFS
588 config ILLEGAL_POINTER_VALUE
590 # This is roughly half way between the top of user space and the bottom
591 # of kernel space, which seems about as good as we can get.
592 default 0x5deadbeef0000000 if PPC64
597 config ARCH_MEMORY_PROBE
599 depends on MEMORY_HOTPLUG
601 # Some NUMA nodes have memory ranges that span
602 # other nodes. Even though a pfn is valid and
603 # between a node's start and end pfns, it may not
604 # reside on that node. See memmap_init_zone()
606 config NODES_SPAN_OTHER_NODES
608 depends on NEED_MULTIPLE_NODES
611 bool "Using standard binutils settings"
615 Turning this option off allows you to select 256KB PAGE_SIZE on 44x.
616 Note, that kernel will be able to run only those applications,
617 which had been compiled using binutils later than 2.17.50.0.3 with
618 '-zmax-page-size' set to 256K (the default is 64K). Or, if using
619 the older binutils, you can patch them with a trivial patch, which
620 changes the ELF_MAXPAGESIZE definition from 0x10000 to 0x40000.
626 Select the kernel logical page size. Increasing the page size
627 will reduce software overhead at each page boundary, allow
628 hardware prefetch mechanisms to be more effective, and allow
629 larger dma transfers increasing IO efficiency and reducing
630 overhead. However the utilization of memory will increase.
631 For example, each cached file will using a multiple of the
632 page size to hold its contents and the difference between the
633 end of file and the end of page is wasted.
635 Some dedicated systems, such as software raid serving with
636 accelerated calculations, have shown significant increases.
638 If you configure a 64 bit kernel for 64k pages but the
639 processor does not support them, then the kernel will simulate
640 them with 4k pages, loading them on demand, but with the
641 reduced software overhead and larger internal fragmentation.
642 For the 32 bit kernel, a large page option will not be offered
643 unless it is supported by the configured processor.
645 If unsure, choose 4K_PAGES.
649 select HAVE_ARCH_SOFT_DIRTY if PPC_BOOK3S_64
653 depends on 44x || PPC_8xx
657 depends on !PPC_FSL_BOOK3E && (44x || PPC_STD_MMU_64 || PPC_BOOK3E_64)
658 select HAVE_ARCH_SOFT_DIRTY if PPC_BOOK3S_64
660 config PPC_256K_PAGES
661 bool "256k page size"
662 depends on 44x && !STDBINUTILS
664 Make the page size 256k.
666 As the ELF standard only requires alignment to support page
667 sizes up to 64k, you will need to compile all of your user
668 space applications with a non-standard binutils settings
669 (see the STDBINUTILS description for details).
671 Say N unless you know what you are doing.
675 config FORCE_MAX_ZONEORDER
676 int "Maximum zone order"
677 range 8 9 if PPC64 && PPC_64K_PAGES
678 default "9" if PPC64 && PPC_64K_PAGES
679 range 13 13 if PPC64 && !PPC_64K_PAGES
680 default "13" if PPC64 && !PPC_64K_PAGES
681 range 9 64 if PPC32 && PPC_16K_PAGES
682 default "9" if PPC32 && PPC_16K_PAGES
683 range 7 64 if PPC32 && PPC_64K_PAGES
684 default "7" if PPC32 && PPC_64K_PAGES
685 range 5 64 if PPC32 && PPC_256K_PAGES
686 default "5" if PPC32 && PPC_256K_PAGES
690 The kernel memory allocator divides physically contiguous memory
691 blocks into "zones", where each zone is a power of two number of
692 pages. This option selects the largest power of two that the kernel
693 keeps in the memory allocator. If you need to allocate very large
694 blocks of physically contiguous memory, then you may need to
697 This config option is actually maximum order plus one. For example,
698 a value of 11 means that the largest free memory block is 2^10 pages.
700 The page size is not necessarily 4KB. For example, on 64-bit
701 systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES. Keep
702 this in mind when choosing a value for this option.
704 config PPC_SUBPAGE_PROT
705 bool "Support setting protections for 4k subpages"
706 depends on PPC_STD_MMU_64 && PPC_64K_PAGES
708 This option adds support for a system call to allow user programs
709 to set access permissions (read/write, readonly, or no access)
710 on the 4k subpages of each 64k page.
712 config PPC_COPRO_BASE
717 bool "SMT (Hyperthreading) scheduler support"
718 depends on PPC64 && SMP
720 SMT scheduler support improves the CPU scheduler's decision making
721 when dealing with POWER5 cpus at a cost of slightly increased
722 overhead in some places. If unsure say N here.
724 config PPC_DENORMALISATION
725 bool "PowerPC denormalisation exception handling"
726 depends on PPC_BOOK3S_64
727 default "y" if PPC_POWERNV
729 Add support for handling denormalisation of single precision
730 values. Useful for bare metal only. If unsure say Y here.
733 bool "Default bootloader kernel arguments"
736 string "Initial kernel command string"
737 depends on CMDLINE_BOOL
738 default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
740 On some platforms, there is currently no way for the boot loader to
741 pass arguments to the kernel. For these platforms, you can supply
742 some command-line options at build time by entering them here. In
743 most cases you will need to specify the root device here.
746 bool "Always use the default kernel command string"
747 depends on CMDLINE_BOOL
749 Always use the default kernel command string, even if the boot
750 loader passes other arguments to the kernel.
751 This is useful if you cannot or don't want to change the
752 command-line options your boot loader passes to the kernel.
755 string "Additional default image types"
757 List additional targets to be built by the bootwrapper here (separated
758 by spaces). This is useful for targets that depend of device tree
759 files in the .dts directory.
761 Targets in this list will be build as part of the default build
762 target, or when the user does a 'make zImage' or a
763 'make zImage.initrd'.
765 If unsure, leave blank
767 config ARCH_WANTS_FREEZER_CONTROL
771 source kernel/power/Kconfig
774 bool "Enable seccomp to safely compute untrusted bytecode"
778 This kernel feature is useful for number crunching applications
779 that may need to compute untrusted bytecode during their
780 execution. By using pipes or other transports made available to
781 the process as file descriptors supporting the read/write
782 syscalls, it's possible to isolate those applications in
783 their own address space using seccomp. Once seccomp is
784 enabled via /proc/<pid>/seccomp, it cannot be disabled
785 and the task is only allowed to execute a few safe syscalls
786 defined by each seccomp mode.
788 If unsure, say Y. Only embedded should say N here.
799 bool "Support for ISA-bus hardware"
803 Find out whether you have ISA slots on your motherboard. ISA is the
804 name of a bus system, i.e. the way the CPU talks to the other stuff
805 inside your box. If you have an Apple machine, say N here; if you
806 have an IBM RS/6000 or pSeries machine, say Y. If you have an
807 embedded board, consult your board documentation.
813 config NEED_DMA_MAP_STATE
814 def_bool (PPC64 || NOT_COHERENT_CACHE)
816 config NEED_SG_DMA_LENGTH
819 config GENERIC_ISA_DMA
821 depends on ISA_DMA_API
824 config PPC_INDIRECT_PCI
827 default y if 40x || 44x
841 select PPC_INDIRECT_PCI
847 depends on SUSPEND && (PPC_85xx || PPC_86xx)
849 Freescale MPC85xx/MPC86xx power management controller support
850 (suspend/resume). For MPC83xx see platforms/83xx/suspend.c
855 depends on SUSPEND && (44x || 40x)
857 PPC4xx Clock Power Management (CPM) support (suspend/resume).
858 It also enables support for two different idle states (idle-wait
865 bool "Freescale Local Bus support"
867 Enables reporting of errors from the Freescale local bus
868 controller. Also contains some common code used by
869 drivers for specific local bus peripherals.
873 depends on PPC_83xx || QUICC_ENGINE || CPM2
875 Freescale General-purpose Timers support
877 # Yes MCA RS/6000s exist but Linux-PPC does not currently support any
881 # Platforms that what PCI turned unconditionally just do select PCI
882 # in their config node. Platforms that want to choose at config
883 # time should select PPC_PCI_CHOICE
884 config PPC_PCI_CHOICE
888 bool "PCI support" if PPC_PCI_CHOICE
889 default y if !40x && !CPM2 && !8xx && !PPC_83xx \
890 && !PPC_85xx && !PPC_86xx && !GAMECUBE_COMMON
891 default PCI_QSPAN if !4xx && !CPM2 && 8xx
892 select GENERIC_PCI_IOMAP
894 Find out whether your system includes a PCI bus. PCI is the name of
895 a bus system, i.e. the way the CPU talks to the other stuff inside
896 your box. If you say Y here, the kernel will include drivers and
897 infrastructure code to support PCI bus devices.
907 depends on !4xx && !CPM2 && 8xx
910 Say Y here if you have a system based on a Motorola 8xx-series
911 embedded processor with a QSPAN PCI interface, otherwise say N.
915 depends on PCI && 8260
916 select PPC_INDIRECT_PCI
919 source "drivers/pci/Kconfig"
921 source "drivers/pcmcia/Kconfig"
928 tristate "RapidIO support"
929 depends on HAS_RAPIDIO || PCI
931 If you say Y here, the kernel will include drivers and
932 infrastructure code to support RapidIO interconnect devices.
935 bool "Freescale Embedded SRIO Controller support"
936 depends on RAPIDIO = y && HAS_RAPIDIO
939 Include support for RapidIO controller on Freescale embedded
940 processors (MPC8548, MPC8641, etc).
942 source "drivers/rapidio/Kconfig"
946 config NONSTATIC_KERNEL
950 menu "Advanced setup"
953 config ADVANCED_OPTIONS
954 bool "Prompt for advanced kernel configuration options"
956 This option will enable prompting for a variety of advanced kernel
957 configuration options. These options can cause the kernel to not
958 work if they are set incorrectly, but can be used to optimize certain
959 aspects of kernel memory management.
961 Unless you know what you are doing, say N here.
963 comment "Default settings for advanced configuration options are used"
964 depends on !ADVANCED_OPTIONS
966 config LOWMEM_SIZE_BOOL
967 bool "Set maximum low memory"
968 depends on ADVANCED_OPTIONS
970 This option allows you to set the maximum amount of memory which
971 will be used as "low memory", that is, memory which the kernel can
972 access directly, without having to set up a kernel virtual mapping.
973 This can be useful in optimizing the layout of kernel virtual
976 Say N here unless you know what you are doing.
979 hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
982 config LOWMEM_CAM_NUM_BOOL
983 bool "Set number of CAMs to use to map low memory"
984 depends on ADVANCED_OPTIONS && FSL_BOOKE
986 This option allows you to set the maximum number of CAM slots that
987 will be used to map low memory. There are a limited number of slots
988 available and even more limited number that will fit in the L1 MMU.
989 However, using more entries will allow mapping more low memory. This
990 can be useful in optimizing the layout of kernel virtual memory.
992 Say N here unless you know what you are doing.
994 config LOWMEM_CAM_NUM
996 int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL
999 config DYNAMIC_MEMSTART
1000 bool "Enable page aligned dynamic load address for kernel"
1001 depends on ADVANCED_OPTIONS && FLATMEM && (FSL_BOOKE || 44x)
1002 select NONSTATIC_KERNEL
1004 This option enables the kernel to be loaded at any page aligned
1005 physical address. The kernel creates a mapping from KERNELBASE to
1006 the address where the kernel is loaded. The page size here implies
1007 the TLB page size of the mapping for kernel on the particular platform.
1008 Please refer to the init code for finding the TLB page size.
1010 DYNAMIC_MEMSTART is an easy way of implementing pseudo-RELOCATABLE
1011 kernel image, where the only restriction is the page aligned kernel
1012 load address. When this option is enabled, the compile time physical
1013 address CONFIG_PHYSICAL_START is ignored.
1015 This option is overridden by CONFIG_RELOCATABLE
1017 config PAGE_OFFSET_BOOL
1018 bool "Set custom page offset address"
1019 depends on ADVANCED_OPTIONS
1021 This option allows you to set the kernel virtual address at which
1022 the kernel will map low memory. This can be useful in optimizing
1023 the virtual memory layout of the system.
1025 Say N here unless you know what you are doing.
1028 hex "Virtual address of memory base" if PAGE_OFFSET_BOOL
1029 default "0xc0000000"
1031 config KERNEL_START_BOOL
1032 bool "Set custom kernel base address"
1033 depends on ADVANCED_OPTIONS
1035 This option allows you to set the kernel virtual address at which
1036 the kernel will be loaded. Normally this should match PAGE_OFFSET
1037 however there are times (like kdump) that one might not want them
1040 Say N here unless you know what you are doing.
1043 hex "Virtual address of kernel base" if KERNEL_START_BOOL
1044 default PAGE_OFFSET if PAGE_OFFSET_BOOL
1045 default "0xc2000000" if CRASH_DUMP && !NONSTATIC_KERNEL
1046 default "0xc0000000"
1048 config PHYSICAL_START_BOOL
1049 bool "Set physical address where the kernel is loaded"
1050 depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE
1052 This gives the physical address where the kernel is loaded.
1054 Say N here unless you know what you are doing.
1056 config PHYSICAL_START
1057 hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL
1058 default "0x02000000" if PPC_STD_MMU && CRASH_DUMP && !NONSTATIC_KERNEL
1059 default "0x00000000"
1061 config PHYSICAL_ALIGN
1063 default "0x04000000" if FSL_BOOKE
1065 This value puts the alignment restrictions on physical address
1066 where kernel is loaded and run from. Kernel is compiled for an
1067 address which meets above alignment restriction.
1069 config TASK_SIZE_BOOL
1070 bool "Set custom user task size"
1071 depends on ADVANCED_OPTIONS
1073 This option allows you to set the amount of virtual address space
1074 allocated to user tasks. This can be useful in optimizing the
1075 virtual memory layout of the system.
1077 Say N here unless you know what you are doing.
1080 hex "Size of user task space" if TASK_SIZE_BOOL
1081 default "0x80000000" if PPC_8xx
1082 default "0xc0000000"
1084 config CONSISTENT_SIZE_BOOL
1085 bool "Set custom consistent memory pool size"
1086 depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
1088 This option allows you to set the size of the
1089 consistent memory pool. This pool of virtual memory
1090 is used to make consistent memory allocations.
1092 config CONSISTENT_SIZE
1093 hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
1094 default "0x00200000" if NOT_COHERENT_CACHE
1097 bool "Pinned Kernel TLBs (860 ONLY)"
1098 depends on ADVANCED_OPTIONS && 8xx
1101 bool "Pinned TLB for IMMR"
1107 # This value must have zeroes in the bottom 60 bits otherwise lots will break
1110 default "0xc000000000000000"
1113 default "0xc000000000000000"
1114 config PHYSICAL_START
1116 default "0x00000000"
1122 source "net/Kconfig"
1124 source "drivers/Kconfig"
1128 source "lib/Kconfig"
1130 source "arch/powerpc/Kconfig.debug"
1132 source "security/Kconfig"
1136 depends on COMPAT && KEYS
1139 source "crypto/Kconfig"
1141 config PPC_LIB_RHEAP
1144 source "arch/powerpc/kvm/Kconfig"
1146 source "kernel/livepatch/Kconfig"