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_SCALED_CPUTIME if VIRT_CPU_ACCOUNTING_NATIVE
91 select ARCH_HAS_SG_CHAIN
92 select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
93 select ARCH_HAS_UBSAN_SANITIZE_ALL
94 select ARCH_HAVE_NMI_SAFE_CMPXCHG
95 select ARCH_MIGHT_HAVE_PC_PARPORT
96 select ARCH_MIGHT_HAVE_PC_SERIO
97 select ARCH_SUPPORTS_ATOMIC_RMW
98 select ARCH_SUPPORTS_DEFERRED_STRUCT_PAGE_INIT
99 select ARCH_USE_BUILTIN_BSWAP
100 select ARCH_USE_CMPXCHG_LOCKREF if PPC64
101 select ARCH_WANT_IPC_PARSE_VERSION
103 select BUILDTIME_EXTABLE_SORT
104 select CLONE_BACKWARDS
105 select DCACHE_WORD_ACCESS if PPC64 && CPU_LITTLE_ENDIAN
106 select EDAC_ATOMIC_SCRUB
108 select GENERIC_ATOMIC64 if PPC32
109 select GENERIC_CLOCKEVENTS
110 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
111 select GENERIC_CMOS_UPDATE
112 select GENERIC_CPU_AUTOPROBE
113 select GENERIC_IRQ_SHOW
114 select GENERIC_IRQ_SHOW_LEVEL
115 select GENERIC_SMP_IDLE_THREAD
116 select GENERIC_STRNCPY_FROM_USER
117 select GENERIC_STRNLEN_USER
118 select GENERIC_TIME_VSYSCALL_OLD
119 select HAVE_ARCH_AUDITSYSCALL
120 select HAVE_ARCH_HARDENED_USERCOPY
121 select HAVE_ARCH_JUMP_LABEL
122 select HAVE_ARCH_KGDB
123 select HAVE_ARCH_SECCOMP_FILTER
124 select HAVE_ARCH_TRACEHOOK
125 select HAVE_CBPF_JIT if !PPC64
126 select HAVE_CONTEXT_TRACKING if PPC64
127 select HAVE_DEBUG_KMEMLEAK
128 select HAVE_DEBUG_STACKOVERFLOW
129 select HAVE_DMA_API_DEBUG
130 select HAVE_DYNAMIC_FTRACE
131 select HAVE_DYNAMIC_FTRACE_WITH_REGS if MPROFILE_KERNEL
132 select HAVE_EBPF_JIT if PPC64
133 select HAVE_EFFICIENT_UNALIGNED_ACCESS if !(CPU_LITTLE_ENDIAN && POWER7_CPU)
134 select HAVE_FTRACE_MCOUNT_RECORD
135 select HAVE_FUNCTION_GRAPH_TRACER
136 select HAVE_FUNCTION_TRACER
137 select HAVE_GCC_PLUGINS
138 select HAVE_GENERIC_RCU_GUP
139 select HAVE_HW_BREAKPOINT if PERF_EVENTS && (PPC_BOOK3S || PPC_8xx)
141 select HAVE_IOREMAP_PROT
142 select HAVE_IRQ_EXIT_ON_IRQ_STACK
143 select HAVE_KERNEL_GZIP
145 select HAVE_KRETPROBES
146 select HAVE_LIVEPATCH if HAVE_DYNAMIC_FTRACE_WITH_REGS
148 select HAVE_MEMBLOCK_NODE_MAP
149 select HAVE_MOD_ARCH_SPECIFIC
150 select HAVE_NMI if PERF_EVENTS
152 select HAVE_OPTPROBES if PPC64
153 select HAVE_PERF_EVENTS
154 select HAVE_PERF_EVENTS_NMI if PPC64
155 select HAVE_PERF_REGS
156 select HAVE_PERF_USER_STACK_DUMP
157 select HAVE_RCU_TABLE_FREE if SMP
158 select HAVE_REGS_AND_STACK_ACCESS_API
159 select HAVE_SYSCALL_TRACEPOINTS
160 select HAVE_VIRT_CPU_ACCOUNTING
162 select IRQ_FORCED_THREADING
163 select MODULES_USE_ELF_RELA
166 select OF_EARLY_FLATTREE
167 select OF_RESERVED_MEM
168 select OLD_SIGACTION if PPC32
169 select OLD_SIGSUSPEND
171 select SYSCTL_EXCEPTION_TRACE
172 select VIRT_TO_BUS if !PPC64
174 # Please keep this list sorted alphabetically.
191 select COMPAT_BINFMT_ELF
192 select ARCH_WANT_OLD_COMPAT_IPC
193 select COMPAT_OLD_SIGACTION
195 config SYSVIPC_COMPAT
197 depends on COMPAT && SYSVIPC
200 # All PPC32s use generic nvram driver through ppc_md
205 config SCHED_OMIT_FRAME_POINTER
209 config ARCH_MAY_HAVE_PC_FDC
213 config PPC_UDBG_16550
217 config GENERIC_TBSYNC
219 default y if PPC32 && SMP
231 config SYS_SUPPORTS_APM_EMULATION
232 default y if PMAC_APM_EMU
238 Used to allow a board to specify it wants an ePAPR compliant wrapper.
241 config DEFAULT_UIMAGE
244 Used to allow a board to specify it wants a uImage built by default
247 config ARCH_HIBERNATION_POSSIBLE
251 config ARCH_SUSPEND_POSSIBLE
253 depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx || \
254 (PPC_85xx && !PPC_E500MC) || PPC_86xx || PPC_PSERIES \
257 config PPC_DCR_NATIVE
267 depends on PPC_DCR_NATIVE || PPC_DCR_MMIO
270 config PPC_OF_PLATFORM_PCI
273 depends on PPC64 # not supported on 32 bits yet
276 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
277 depends on PPC32 || PPC_STD_MMU_64
280 config ARCH_SUPPORTS_UPROBES
283 config PPC_ADV_DEBUG_REGS
285 depends on 40x || BOOKE
288 config PPC_ADV_DEBUG_IACS
290 depends on PPC_ADV_DEBUG_REGS
294 config PPC_ADV_DEBUG_DACS
296 depends on PPC_ADV_DEBUG_REGS
299 config PPC_ADV_DEBUG_DVCS
301 depends on PPC_ADV_DEBUG_REGS
305 config PPC_ADV_DEBUG_DAC_RANGE
307 depends on PPC_ADV_DEBUG_REGS && 44x
310 config PPC_EMULATE_SSTEP
312 default y if KPROBES || UPROBES || XMON || HAVE_HW_BREAKPOINT
318 config PGTABLE_LEVELS
321 default 3 if PPC_64K_PAGES && !PPC_BOOK3S_64
324 source "init/Kconfig"
326 source "kernel/Kconfig.freezer"
328 source "arch/powerpc/sysdev/Kconfig"
329 source "arch/powerpc/platforms/Kconfig"
331 menu "Kernel options"
334 bool "High memory support"
337 source kernel/Kconfig.hz
338 source kernel/Kconfig.preempt
339 source "fs/Kconfig.binfmt"
341 config HUGETLB_PAGE_SIZE_VARIABLE
343 depends on HUGETLB_PAGE
346 config MATH_EMULATION
347 bool "Math emulation"
348 depends on 4xx || 8xx || PPC_MPC832x || BOOKE
350 Some PowerPC chips designed for embedded applications do not have
351 a floating-point unit and therefore do not implement the
352 floating-point instructions in the PowerPC instruction set. If you
353 say Y here, the kernel will include code to emulate a floating-point
354 unit, which will allow programs that use floating-point
357 This is also useful to emulate missing (optional) instructions
358 such as fsqrt on cores that do have an FPU but do not implement
359 them (such as Freescale BookE).
362 prompt "Math emulation options"
363 default MATH_EMULATION_FULL
364 depends on MATH_EMULATION
366 config MATH_EMULATION_FULL
367 bool "Emulate all the floating point instructions"
369 Select this option will enable the kernel to support to emulate
370 all the floating point instructions. If your SoC doesn't have
371 a FPU, you should select this.
373 config MATH_EMULATION_HW_UNIMPLEMENTED
374 bool "Just emulate the FPU unimplemented instructions"
376 Select this if you know there does have a hardware FPU on your
377 SoC, but some floating point instructions are not implemented by that.
381 config PPC_TRANSACTIONAL_MEM
382 bool "Transactional Memory support for POWERPC"
383 depends on PPC_BOOK3S_64
389 Support user-mode Transactional Memory on POWERPC.
391 config DISABLE_MPROFILE_KERNEL
392 bool "Disable use of mprofile-kernel for kernel tracing"
393 depends on PPC64 && CPU_LITTLE_ENDIAN
396 Selecting this options disables use of the mprofile-kernel ABI for
397 kernel tracing. That will cause options such as live patching
398 (CONFIG_LIVEPATCH) which depend on CONFIG_DYNAMIC_FTRACE_WITH_REGS to
401 If you have a toolchain which supports mprofile-kernel, then you can
402 disable this. Otherwise leave it enabled. If you're not sure, say
405 config MPROFILE_KERNEL
406 depends on PPC64 && CPU_LITTLE_ENDIAN
407 def_bool !DISABLE_MPROFILE_KERNEL
409 config USE_THIN_ARCHIVES
410 bool "Build the kernel using thin archives"
414 Build the kernel using thin archives.
415 If you're unsure say N.
421 bool "SWIOTLB support"
425 Support for IO bounce buffering for systems without an IOMMU.
426 This allows us to DMA to the full physical address space on
427 platforms where the size of a physical address is larger
428 than the bus address. Not all platforms support this.
431 bool "Support for enabling/disabling CPUs"
432 depends on SMP && (PPC_PSERIES || \
433 PPC_PMAC || PPC_POWERNV || FSL_SOC_BOOKE)
435 Say Y here to be able to disable and re-enable individual
436 CPUs at runtime on SMP machines.
438 Say N if you are unsure.
440 config ARCH_CPU_PROBE_RELEASE
442 depends on HOTPLUG_CPU
444 config ARCH_ENABLE_MEMORY_HOTPLUG
447 config ARCH_HAS_WALK_MEMORY
450 config ARCH_ENABLE_MEMORY_HOTREMOVE
453 config PPC64_SUPPORTS_MEMORY_FAILURE
454 bool "Add support for memory hwpoison"
455 depends on PPC_BOOK3S_64
456 default "y" if PPC_POWERNV
457 select ARCH_SUPPORTS_MEMORY_FAILURE
460 bool "kexec system call"
461 depends on (PPC_BOOK3S || FSL_BOOKE || (44x && !SMP)) || PPC_BOOK3E
464 kexec is a system call that implements the ability to shutdown your
465 current kernel, and to start another kernel. It is like a reboot
466 but it is independent of the system firmware. And like a reboot
467 you can start any kernel with it, not just Linux.
469 The name comes from the similarity to the exec system call.
471 It is an ongoing process to be certain the hardware in a machine
472 is properly shutdown, so do not be surprised if this code does not
473 initially work for you. As of this writing the exact hardware
474 interface is strongly in flux, so no good recommendation can be
478 bool "kexec file based system call"
480 select HAVE_IMA_KEXEC
484 depends on CRYPTO_SHA256=y
486 This is a new version of the kexec system call. This call is
487 file based and takes in file descriptors as system call arguments
488 for kernel and initramfs as opposed to a list of segments as is the
489 case for the older kexec call.
492 bool "Build a relocatable kernel"
493 depends on (PPC64 && !COMPILE_TEST) || (FLATMEM && (44x || FSL_BOOKE))
494 select NONSTATIC_KERNEL
495 select MODULE_REL_CRCS if MODVERSIONS
497 This builds a kernel image that is capable of running at the
498 location the kernel is loaded at. For ppc32, there is no any
499 alignment restrictions, and this feature is a superset of
500 DYNAMIC_MEMSTART and hence overrides it. For ppc64, we should use
501 16k-aligned base address. The kernel is linked as a
502 position-independent executable (PIE) and contains dynamic relocations
503 which are processed early in the bootup process.
505 One use is for the kexec on panic case where the recovery kernel
506 must live at a different physical address than the primary
509 Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address
510 it has been loaded at and the compile time physical addresses
511 CONFIG_PHYSICAL_START is ignored. However CONFIG_PHYSICAL_START
512 setting can still be useful to bootwrappers that need to know the
513 load address of the kernel (eg. u-boot/mkimage).
515 config RELOCATABLE_TEST
516 bool "Test relocatable kernel"
517 depends on (PPC64 && RELOCATABLE)
520 This runs the relocatable kernel at the address it was initially
521 loaded at, which tends to be non-zero and therefore test the
525 bool "Build a kdump crash kernel"
526 depends on PPC64 || 6xx || FSL_BOOKE || (44x && !SMP)
527 select RELOCATABLE if (PPC64 && !COMPILE_TEST) || 44x || FSL_BOOKE
529 Build a kernel suitable for use as a kdump capture kernel.
530 The same kernel binary can be used as production kernel and dump
534 bool "Firmware-assisted dump"
535 depends on PPC64 && PPC_RTAS && CRASH_DUMP && KEXEC_CORE
537 A robust mechanism to get reliable kernel crash dump with
538 assistance from firmware. This approach does not use kexec,
539 instead firmware assists in booting the kdump kernel
540 while preserving memory contents. Firmware-assisted dump
541 is meant to be a kdump replacement offering robustness and
542 speed not possible without system firmware assistance.
547 bool "Distribute interrupts on all CPUs by default"
550 This option gives the kernel permission to distribute IRQs across
551 multiple CPUs. Saying N here will route all IRQs to the first
552 CPU. Generally saying Y is safe, although some problems have been
553 reported with SMP Power Macintoshes with this option enabled.
558 default y if SMP && PPC_PSERIES
564 depends on NEED_MULTIPLE_NODES
566 config USE_PERCPU_NUMA_NODE_ID
570 config HAVE_MEMORYLESS_NODES
574 config ARCH_SELECT_MEMORY_MODEL
578 config ARCH_FLATMEM_ENABLE
580 depends on (PPC64 && !NUMA) || PPC32
582 config ARCH_SPARSEMEM_ENABLE
585 select SPARSEMEM_VMEMMAP_ENABLE
587 config ARCH_SPARSEMEM_DEFAULT
589 depends on (SMP && PPC_PSERIES) || PPC_PS3
591 config SYS_SUPPORTS_HUGETLBFS
594 config ILLEGAL_POINTER_VALUE
596 # This is roughly half way between the top of user space and the bottom
597 # of kernel space, which seems about as good as we can get.
598 default 0x5deadbeef0000000 if PPC64
603 config ARCH_MEMORY_PROBE
605 depends on MEMORY_HOTPLUG
607 # Some NUMA nodes have memory ranges that span
608 # other nodes. Even though a pfn is valid and
609 # between a node's start and end pfns, it may not
610 # reside on that node. See memmap_init_zone()
612 config NODES_SPAN_OTHER_NODES
614 depends on NEED_MULTIPLE_NODES
617 bool "Using standard binutils settings"
621 Turning this option off allows you to select 256KB PAGE_SIZE on 44x.
622 Note, that kernel will be able to run only those applications,
623 which had been compiled using binutils later than 2.17.50.0.3 with
624 '-zmax-page-size' set to 256K (the default is 64K). Or, if using
625 the older binutils, you can patch them with a trivial patch, which
626 changes the ELF_MAXPAGESIZE definition from 0x10000 to 0x40000.
632 Select the kernel logical page size. Increasing the page size
633 will reduce software overhead at each page boundary, allow
634 hardware prefetch mechanisms to be more effective, and allow
635 larger dma transfers increasing IO efficiency and reducing
636 overhead. However the utilization of memory will increase.
637 For example, each cached file will using a multiple of the
638 page size to hold its contents and the difference between the
639 end of file and the end of page is wasted.
641 Some dedicated systems, such as software raid serving with
642 accelerated calculations, have shown significant increases.
644 If you configure a 64 bit kernel for 64k pages but the
645 processor does not support them, then the kernel will simulate
646 them with 4k pages, loading them on demand, but with the
647 reduced software overhead and larger internal fragmentation.
648 For the 32 bit kernel, a large page option will not be offered
649 unless it is supported by the configured processor.
651 If unsure, choose 4K_PAGES.
655 select HAVE_ARCH_SOFT_DIRTY if PPC_BOOK3S_64
659 depends on 44x || PPC_8xx
663 depends on !PPC_FSL_BOOK3E && (44x || PPC_STD_MMU_64 || PPC_BOOK3E_64)
664 select HAVE_ARCH_SOFT_DIRTY if PPC_BOOK3S_64
666 config PPC_256K_PAGES
667 bool "256k page size"
668 depends on 44x && !STDBINUTILS
670 Make the page size 256k.
672 As the ELF standard only requires alignment to support page
673 sizes up to 64k, you will need to compile all of your user
674 space applications with a non-standard binutils settings
675 (see the STDBINUTILS description for details).
677 Say N unless you know what you are doing.
681 config FORCE_MAX_ZONEORDER
682 int "Maximum zone order"
683 range 8 9 if PPC64 && PPC_64K_PAGES
684 default "9" if PPC64 && PPC_64K_PAGES
685 range 13 13 if PPC64 && !PPC_64K_PAGES
686 default "13" if PPC64 && !PPC_64K_PAGES
687 range 9 64 if PPC32 && PPC_16K_PAGES
688 default "9" if PPC32 && PPC_16K_PAGES
689 range 7 64 if PPC32 && PPC_64K_PAGES
690 default "7" if PPC32 && PPC_64K_PAGES
691 range 5 64 if PPC32 && PPC_256K_PAGES
692 default "5" if PPC32 && PPC_256K_PAGES
696 The kernel memory allocator divides physically contiguous memory
697 blocks into "zones", where each zone is a power of two number of
698 pages. This option selects the largest power of two that the kernel
699 keeps in the memory allocator. If you need to allocate very large
700 blocks of physically contiguous memory, then you may need to
703 This config option is actually maximum order plus one. For example,
704 a value of 11 means that the largest free memory block is 2^10 pages.
706 The page size is not necessarily 4KB. For example, on 64-bit
707 systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES. Keep
708 this in mind when choosing a value for this option.
710 config PPC_SUBPAGE_PROT
711 bool "Support setting protections for 4k subpages"
712 depends on PPC_STD_MMU_64 && PPC_64K_PAGES
714 This option adds support for a system call to allow user programs
715 to set access permissions (read/write, readonly, or no access)
716 on the 4k subpages of each 64k page.
718 config PPC_COPRO_BASE
723 bool "SMT (Hyperthreading) scheduler support"
724 depends on PPC64 && SMP
726 SMT scheduler support improves the CPU scheduler's decision making
727 when dealing with POWER5 cpus at a cost of slightly increased
728 overhead in some places. If unsure say N here.
730 config PPC_DENORMALISATION
731 bool "PowerPC denormalisation exception handling"
732 depends on PPC_BOOK3S_64
733 default "y" if PPC_POWERNV
735 Add support for handling denormalisation of single precision
736 values. Useful for bare metal only. If unsure say Y here.
739 bool "Default bootloader kernel arguments"
742 string "Initial kernel command string"
743 depends on CMDLINE_BOOL
744 default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
746 On some platforms, there is currently no way for the boot loader to
747 pass arguments to the kernel. For these platforms, you can supply
748 some command-line options at build time by entering them here. In
749 most cases you will need to specify the root device here.
752 bool "Always use the default kernel command string"
753 depends on CMDLINE_BOOL
755 Always use the default kernel command string, even if the boot
756 loader passes other arguments to the kernel.
757 This is useful if you cannot or don't want to change the
758 command-line options your boot loader passes to the kernel.
761 string "Additional default image types"
763 List additional targets to be built by the bootwrapper here (separated
764 by spaces). This is useful for targets that depend of device tree
765 files in the .dts directory.
767 Targets in this list will be build as part of the default build
768 target, or when the user does a 'make zImage' or a
769 'make zImage.initrd'.
771 If unsure, leave blank
773 config ARCH_WANTS_FREEZER_CONTROL
777 source kernel/power/Kconfig
780 bool "Enable seccomp to safely compute untrusted bytecode"
784 This kernel feature is useful for number crunching applications
785 that may need to compute untrusted bytecode during their
786 execution. By using pipes or other transports made available to
787 the process as file descriptors supporting the read/write
788 syscalls, it's possible to isolate those applications in
789 their own address space using seccomp. Once seccomp is
790 enabled via /proc/<pid>/seccomp, it cannot be disabled
791 and the task is only allowed to execute a few safe syscalls
792 defined by each seccomp mode.
794 If unsure, say Y. Only embedded should say N here.
805 bool "Support for ISA-bus hardware"
809 Find out whether you have ISA slots on your motherboard. ISA is the
810 name of a bus system, i.e. the way the CPU talks to the other stuff
811 inside your box. If you have an Apple machine, say N here; if you
812 have an IBM RS/6000 or pSeries machine, say Y. If you have an
813 embedded board, consult your board documentation.
819 config NEED_DMA_MAP_STATE
820 def_bool (PPC64 || NOT_COHERENT_CACHE)
822 config NEED_SG_DMA_LENGTH
825 config GENERIC_ISA_DMA
827 depends on ISA_DMA_API
830 config PPC_INDIRECT_PCI
833 default y if 40x || 44x
847 select PPC_INDIRECT_PCI
853 depends on SUSPEND && (PPC_85xx || PPC_86xx)
855 Freescale MPC85xx/MPC86xx power management controller support
856 (suspend/resume). For MPC83xx see platforms/83xx/suspend.c
861 depends on SUSPEND && (44x || 40x)
863 PPC4xx Clock Power Management (CPM) support (suspend/resume).
864 It also enables support for two different idle states (idle-wait
871 bool "Freescale Local Bus support"
873 Enables reporting of errors from the Freescale local bus
874 controller. Also contains some common code used by
875 drivers for specific local bus peripherals.
879 depends on PPC_83xx || QUICC_ENGINE || CPM2
881 Freescale General-purpose Timers support
883 # Yes MCA RS/6000s exist but Linux-PPC does not currently support any
887 # Platforms that what PCI turned unconditionally just do select PCI
888 # in their config node. Platforms that want to choose at config
889 # time should select PPC_PCI_CHOICE
890 config PPC_PCI_CHOICE
894 bool "PCI support" if PPC_PCI_CHOICE
895 default y if !40x && !CPM2 && !8xx && !PPC_83xx \
896 && !PPC_85xx && !PPC_86xx && !GAMECUBE_COMMON
897 default PCI_QSPAN if !4xx && !CPM2 && 8xx
898 select GENERIC_PCI_IOMAP
900 Find out whether your system includes a PCI bus. PCI is the name of
901 a bus system, i.e. the way the CPU talks to the other stuff inside
902 your box. If you say Y here, the kernel will include drivers and
903 infrastructure code to support PCI bus devices.
913 depends on !4xx && !CPM2 && 8xx
916 Say Y here if you have a system based on a Motorola 8xx-series
917 embedded processor with a QSPAN PCI interface, otherwise say N.
921 depends on PCI && 8260
922 select PPC_INDIRECT_PCI
925 source "drivers/pci/Kconfig"
927 source "drivers/pcmcia/Kconfig"
934 tristate "RapidIO support"
935 depends on HAS_RAPIDIO || PCI
937 If you say Y here, the kernel will include drivers and
938 infrastructure code to support RapidIO interconnect devices.
941 bool "Freescale Embedded SRIO Controller support"
942 depends on RAPIDIO = y && HAS_RAPIDIO
945 Include support for RapidIO controller on Freescale embedded
946 processors (MPC8548, MPC8641, etc).
948 source "drivers/rapidio/Kconfig"
952 config NONSTATIC_KERNEL
956 menu "Advanced setup"
959 config ADVANCED_OPTIONS
960 bool "Prompt for advanced kernel configuration options"
962 This option will enable prompting for a variety of advanced kernel
963 configuration options. These options can cause the kernel to not
964 work if they are set incorrectly, but can be used to optimize certain
965 aspects of kernel memory management.
967 Unless you know what you are doing, say N here.
969 comment "Default settings for advanced configuration options are used"
970 depends on !ADVANCED_OPTIONS
972 config LOWMEM_SIZE_BOOL
973 bool "Set maximum low memory"
974 depends on ADVANCED_OPTIONS
976 This option allows you to set the maximum amount of memory which
977 will be used as "low memory", that is, memory which the kernel can
978 access directly, without having to set up a kernel virtual mapping.
979 This can be useful in optimizing the layout of kernel virtual
982 Say N here unless you know what you are doing.
985 hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
988 config LOWMEM_CAM_NUM_BOOL
989 bool "Set number of CAMs to use to map low memory"
990 depends on ADVANCED_OPTIONS && FSL_BOOKE
992 This option allows you to set the maximum number of CAM slots that
993 will be used to map low memory. There are a limited number of slots
994 available and even more limited number that will fit in the L1 MMU.
995 However, using more entries will allow mapping more low memory. This
996 can be useful in optimizing the layout of kernel virtual memory.
998 Say N here unless you know what you are doing.
1000 config LOWMEM_CAM_NUM
1001 depends on FSL_BOOKE
1002 int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL
1005 config DYNAMIC_MEMSTART
1006 bool "Enable page aligned dynamic load address for kernel"
1007 depends on ADVANCED_OPTIONS && FLATMEM && (FSL_BOOKE || 44x)
1008 select NONSTATIC_KERNEL
1010 This option enables the kernel to be loaded at any page aligned
1011 physical address. The kernel creates a mapping from KERNELBASE to
1012 the address where the kernel is loaded. The page size here implies
1013 the TLB page size of the mapping for kernel on the particular platform.
1014 Please refer to the init code for finding the TLB page size.
1016 DYNAMIC_MEMSTART is an easy way of implementing pseudo-RELOCATABLE
1017 kernel image, where the only restriction is the page aligned kernel
1018 load address. When this option is enabled, the compile time physical
1019 address CONFIG_PHYSICAL_START is ignored.
1021 This option is overridden by CONFIG_RELOCATABLE
1023 config PAGE_OFFSET_BOOL
1024 bool "Set custom page offset address"
1025 depends on ADVANCED_OPTIONS
1027 This option allows you to set the kernel virtual address at which
1028 the kernel will map low memory. This can be useful in optimizing
1029 the virtual memory layout of the system.
1031 Say N here unless you know what you are doing.
1034 hex "Virtual address of memory base" if PAGE_OFFSET_BOOL
1035 default "0xc0000000"
1037 config KERNEL_START_BOOL
1038 bool "Set custom kernel base address"
1039 depends on ADVANCED_OPTIONS
1041 This option allows you to set the kernel virtual address at which
1042 the kernel will be loaded. Normally this should match PAGE_OFFSET
1043 however there are times (like kdump) that one might not want them
1046 Say N here unless you know what you are doing.
1049 hex "Virtual address of kernel base" if KERNEL_START_BOOL
1050 default PAGE_OFFSET if PAGE_OFFSET_BOOL
1051 default "0xc2000000" if CRASH_DUMP && !NONSTATIC_KERNEL
1052 default "0xc0000000"
1054 config PHYSICAL_START_BOOL
1055 bool "Set physical address where the kernel is loaded"
1056 depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE
1058 This gives the physical address where the kernel is loaded.
1060 Say N here unless you know what you are doing.
1062 config PHYSICAL_START
1063 hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL
1064 default "0x02000000" if PPC_STD_MMU && CRASH_DUMP && !NONSTATIC_KERNEL
1065 default "0x00000000"
1067 config PHYSICAL_ALIGN
1069 default "0x04000000" if FSL_BOOKE
1071 This value puts the alignment restrictions on physical address
1072 where kernel is loaded and run from. Kernel is compiled for an
1073 address which meets above alignment restriction.
1075 config TASK_SIZE_BOOL
1076 bool "Set custom user task size"
1077 depends on ADVANCED_OPTIONS
1079 This option allows you to set the amount of virtual address space
1080 allocated to user tasks. This can be useful in optimizing the
1081 virtual memory layout of the system.
1083 Say N here unless you know what you are doing.
1086 hex "Size of user task space" if TASK_SIZE_BOOL
1087 default "0x80000000" if PPC_8xx
1088 default "0xc0000000"
1090 config CONSISTENT_SIZE_BOOL
1091 bool "Set custom consistent memory pool size"
1092 depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
1094 This option allows you to set the size of the
1095 consistent memory pool. This pool of virtual memory
1096 is used to make consistent memory allocations.
1098 config CONSISTENT_SIZE
1099 hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
1100 default "0x00200000" if NOT_COHERENT_CACHE
1103 bool "Pinned Kernel TLBs (860 ONLY)"
1104 depends on ADVANCED_OPTIONS && 8xx
1107 bool "Pinned TLB for IMMR"
1113 # This value must have zeroes in the bottom 60 bits otherwise lots will break
1116 default "0xc000000000000000"
1119 default "0xc000000000000000"
1120 config PHYSICAL_START
1122 default "0x00000000"
1128 source "net/Kconfig"
1130 source "drivers/Kconfig"
1134 source "lib/Kconfig"
1136 source "arch/powerpc/Kconfig.debug"
1138 source "security/Kconfig"
1142 depends on COMPAT && KEYS
1145 source "crypto/Kconfig"
1147 config PPC_LIB_RHEAP
1150 source "arch/powerpc/kvm/Kconfig"
1152 source "kernel/livepatch/Kconfig"