1 source "arch/powerpc/platforms/Kconfig.cputype"
20 config ARCH_PHYS_ADDR_T_64BIT
21 def_bool PPC64 || PHYS_64BIT
23 config ARCH_DMA_ADDR_T_64BIT
24 def_bool ARCH_PHYS_ADDR_T_64BIT
30 config HAVE_SETUP_PER_CPU_AREA
33 config NEED_PER_CPU_EMBED_FIRST_CHUNK
37 int "Number of virtual interrupt numbers"
41 This defines the number of virtual interrupt numbers the kernel
42 can manage. Virtual interrupt numbers are what you see in
43 /proc/interrupts. If you configure your system to have too few,
44 drivers will fail to load or worse - handle with care.
46 config STACKTRACE_SUPPORT
50 config HAVE_LATENCYTOP_SUPPORT
53 config TRACE_IRQFLAGS_SUPPORT
57 config LOCKDEP_SUPPORT
61 config RWSEM_GENERIC_SPINLOCK
64 config RWSEM_XCHGADD_ALGORITHM
68 config GENERIC_LOCKBREAK
71 depends on SMP && PREEMPT
73 config ARCH_HAS_ILOG2_U32
77 config ARCH_HAS_ILOG2_U64
81 config GENERIC_HWEIGHT
88 Generic GPIO API support
90 config ARCH_NO_VIRT_TO_BUS
97 select OF_EARLY_FLATTREE
98 select HAVE_FTRACE_MCOUNT_RECORD
99 select HAVE_DYNAMIC_FTRACE
100 select HAVE_FUNCTION_TRACER
101 select HAVE_FUNCTION_GRAPH_TRACER
102 select SYSCTL_EXCEPTION_TRACE
103 select ARCH_WANT_OPTIONAL_GPIOLIB
105 select HAVE_IOREMAP_PROT
106 select HAVE_EFFICIENT_UNALIGNED_ACCESS
108 select HAVE_ARCH_KGDB
109 select HAVE_KRETPROBES
110 select HAVE_ARCH_TRACEHOOK
112 select HAVE_MEMBLOCK_NODE_MAP
113 select HAVE_DMA_ATTRS
114 select HAVE_DMA_API_DEBUG
115 select USE_GENERIC_SMP_HELPERS if SMP
117 select HAVE_DEBUG_KMEMLEAK
118 select HAVE_SYSCALL_WRAPPERS if PPC64
119 select GENERIC_ATOMIC64 if PPC32
120 select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
122 select HAVE_PERF_EVENTS
123 select HAVE_REGS_AND_STACK_ACCESS_API
124 select HAVE_HW_BREAKPOINT if PERF_EVENTS && PPC_BOOK3S_64
125 select HAVE_GENERIC_HARDIRQS
126 select ARCH_WANT_IPC_PARSE_VERSION
130 select GENERIC_IRQ_SHOW
131 select GENERIC_IRQ_SHOW_LEVEL
132 select IRQ_FORCED_THREADING
133 select HAVE_RCU_TABLE_FREE if SMP
134 select HAVE_SYSCALL_TRACEPOINTS
135 select HAVE_BPF_JIT if PPC64
136 select HAVE_ARCH_JUMP_LABEL
137 select ARCH_HAVE_NMI_SAFE_CMPXCHG
138 select GENERIC_SMP_IDLE_THREAD
139 select GENERIC_CMOS_UPDATE
140 select GENERIC_TIME_VSYSCALL_OLD
141 select GENERIC_CLOCKEVENTS
142 select GENERIC_STRNCPY_FROM_USER
143 select GENERIC_STRNLEN_USER
144 select HAVE_MOD_ARCH_SPECIFIC
145 select MODULES_USE_ELF_RELA
146 select CLONE_BACKWARDS
147 select OLD_SIGSUSPEND
148 select OLD_SIGACTION if PPC32
157 select COMPAT_BINFMT_ELF
158 select ARCH_WANT_OLD_COMPAT_IPC
159 select COMPAT_OLD_SIGACTION
161 config SYSVIPC_COMPAT
163 depends on COMPAT && SYSVIPC
166 # All PPC32s use generic nvram driver through ppc_md
171 config SCHED_OMIT_FRAME_POINTER
175 config ARCH_MAY_HAVE_PC_FDC
177 default !PPC_PSERIES || PCI
182 config PPC_UDBG_16550
186 config GENERIC_TBSYNC
188 default y if PPC32 && SMP
200 config SYS_SUPPORTS_APM_EMULATION
201 default y if PMAC_APM_EMU
207 Used to allow a board to specify it wants an ePAPR compliant wrapper.
210 config DEFAULT_UIMAGE
213 Used to allow a board to specify it wants a uImage built by default
219 config ARCH_HIBERNATION_POSSIBLE
223 config ARCH_SUSPEND_POSSIBLE
225 depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx || \
226 (PPC_85xx && !PPC_E500MC) || PPC_86xx || PPC_PSERIES \
229 config PPC_DCR_NATIVE
239 depends on PPC_DCR_NATIVE || PPC_DCR_MMIO
242 config PPC_OF_PLATFORM_PCI
245 depends on PPC64 # not supported on 32 bits yet
248 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
251 config ARCH_SUPPORTS_UPROBES
254 config PPC_ADV_DEBUG_REGS
256 depends on 40x || BOOKE
259 config PPC_ADV_DEBUG_IACS
261 depends on PPC_ADV_DEBUG_REGS
265 config PPC_ADV_DEBUG_DACS
267 depends on PPC_ADV_DEBUG_REGS
270 config PPC_ADV_DEBUG_DVCS
272 depends on PPC_ADV_DEBUG_REGS
276 config PPC_ADV_DEBUG_DAC_RANGE
278 depends on PPC_ADV_DEBUG_REGS && 44x
281 source "init/Kconfig"
283 source "kernel/Kconfig.freezer"
285 source "arch/powerpc/sysdev/Kconfig"
286 source "arch/powerpc/platforms/Kconfig"
288 menu "Kernel options"
291 bool "High memory support"
294 source kernel/Kconfig.hz
295 source kernel/Kconfig.preempt
296 source "fs/Kconfig.binfmt"
298 config HUGETLB_PAGE_SIZE_VARIABLE
300 depends on HUGETLB_PAGE
303 config MATH_EMULATION
304 bool "Math emulation"
305 depends on 4xx || 8xx || E200 || PPC_MPC832x || E500
307 Some PowerPC chips designed for embedded applications do not have
308 a floating-point unit and therefore do not implement the
309 floating-point instructions in the PowerPC instruction set. If you
310 say Y here, the kernel will include code to emulate a floating-point
311 unit, which will allow programs that use floating-point
314 config 8XX_MINIMAL_FPEMU
315 bool "Minimal math emulation for 8xx"
316 depends on 8xx && !MATH_EMULATION
318 Older arch/ppc kernels still emulated a few floating point
319 instructions such as load and store, even when full math
320 emulation is disabled. Say "Y" here if you want to preserve
323 It is recommended that you build a soft-float userspace instead.
329 bool "SWIOTLB support"
333 Support for IO bounce buffering for systems without an IOMMU.
334 This allows us to DMA to the full physical address space on
335 platforms where the size of a physical address is larger
336 than the bus address. Not all platforms support this.
339 bool "Support for enabling/disabling CPUs"
340 depends on SMP && HOTPLUG && EXPERIMENTAL && (PPC_PSERIES || \
341 PPC_PMAC || PPC_POWERNV || (PPC_85xx && !PPC_E500MC))
343 Say Y here to be able to disable and re-enable individual
344 CPUs at runtime on SMP machines.
346 Say N if you are unsure.
348 config ARCH_CPU_PROBE_RELEASE
350 depends on HOTPLUG_CPU
352 config ARCH_ENABLE_MEMORY_HOTPLUG
355 config ARCH_HAS_WALK_MEMORY
358 config ARCH_ENABLE_MEMORY_HOTREMOVE
362 bool "kexec system call (EXPERIMENTAL)"
363 depends on (PPC_BOOK3S || FSL_BOOKE || (44x && !SMP)) && EXPERIMENTAL
365 kexec is a system call that implements the ability to shutdown your
366 current kernel, and to start another kernel. It is like a reboot
367 but it is independent of the system firmware. And like a reboot
368 you can start any kernel with it, not just Linux.
370 The name comes from the similarity to the exec system call.
372 It is an ongoing process to be certain the hardware in a machine
373 is properly shutdown, so do not be surprised if this code does not
374 initially work for you. It may help to enable device hotplugging
375 support. As of this writing the exact hardware interface is
376 strongly in flux, so no good recommendation can be made.
379 bool "Build a kdump crash kernel"
380 depends on PPC64 || 6xx || FSL_BOOKE || (44x && !SMP)
381 select RELOCATABLE if PPC64 || 44x
382 select DYNAMIC_MEMSTART if FSL_BOOKE
384 Build a kernel suitable for use as a kdump capture kernel.
385 The same kernel binary can be used as production kernel and dump
389 bool "Firmware-assisted dump"
390 depends on PPC64 && PPC_RTAS && CRASH_DUMP
392 A robust mechanism to get reliable kernel crash dump with
393 assistance from firmware. This approach does not use kexec,
394 instead firmware assists in booting the kdump kernel
395 while preserving memory contents. Firmware-assisted dump
396 is meant to be a kdump replacement offering robustness and
397 speed not possible without system firmware assistance.
402 bool "Distribute interrupts on all CPUs by default"
403 depends on SMP && !MV64360
405 This option gives the kernel permission to distribute IRQs across
406 multiple CPUs. Saying N here will route all IRQs to the first
407 CPU. Generally saying Y is safe, although some problems have been
408 reported with SMP Power Macintoshes with this option enabled.
413 default y if SMP && PPC_PSERIES
419 depends on NEED_MULTIPLE_NODES
421 config MAX_ACTIVE_REGIONS
423 default "256" if PPC64
426 config ARCH_SELECT_MEMORY_MODEL
430 config ARCH_FLATMEM_ENABLE
432 depends on (PPC64 && !NUMA) || PPC32
434 config ARCH_SPARSEMEM_ENABLE
437 select SPARSEMEM_VMEMMAP_ENABLE
439 config ARCH_SPARSEMEM_DEFAULT
441 depends on (SMP && PPC_PSERIES) || PPC_PS3
443 config SYS_SUPPORTS_HUGETLBFS
448 config ARCH_MEMORY_PROBE
450 depends on MEMORY_HOTPLUG
452 # Some NUMA nodes have memory ranges that span
453 # other nodes. Even though a pfn is valid and
454 # between a node's start and end pfns, it may not
455 # reside on that node. See memmap_init_zone()
457 config NODES_SPAN_OTHER_NODES
459 depends on NEED_MULTIPLE_NODES
461 config PPC_HAS_HASH_64K
467 bool "Using standard binutils settings"
471 Turning this option off allows you to select 256KB PAGE_SIZE on 44x.
472 Note, that kernel will be able to run only those applications,
473 which had been compiled using binutils later than 2.17.50.0.3 with
474 '-zmax-page-size' set to 256K (the default is 64K). Or, if using
475 the older binutils, you can patch them with a trivial patch, which
476 changes the ELF_MAXPAGESIZE definition from 0x10000 to 0x40000.
482 Select the kernel logical page size. Increasing the page size
483 will reduce software overhead at each page boundary, allow
484 hardware prefetch mechanisms to be more effective, and allow
485 larger dma transfers increasing IO efficiency and reducing
486 overhead. However the utilization of memory will increase.
487 For example, each cached file will using a multiple of the
488 page size to hold its contents and the difference between the
489 end of file and the end of page is wasted.
491 Some dedicated systems, such as software raid serving with
492 accelerated calculations, have shown significant increases.
494 If you configure a 64 bit kernel for 64k pages but the
495 processor does not support them, then the kernel will simulate
496 them with 4k pages, loading them on demand, but with the
497 reduced software overhead and larger internal fragmentation.
498 For the 32 bit kernel, a large page option will not be offered
499 unless it is supported by the configured processor.
501 If unsure, choose 4K_PAGES.
507 bool "16k page size" if 44x
510 bool "64k page size" if 44x || PPC_STD_MMU_64 || PPC_BOOK3E_64
511 select PPC_HAS_HASH_64K if PPC_STD_MMU_64
513 config PPC_256K_PAGES
514 bool "256k page size" if 44x
515 depends on !STDBINUTILS
517 Make the page size 256k.
519 As the ELF standard only requires alignment to support page
520 sizes up to 64k, you will need to compile all of your user
521 space applications with a non-standard binutils settings
522 (see the STDBINUTILS description for details).
524 Say N unless you know what you are doing.
528 config FORCE_MAX_ZONEORDER
529 int "Maximum zone order"
530 range 9 64 if PPC64 && PPC_64K_PAGES
531 default "9" if PPC64 && PPC_64K_PAGES
532 range 13 64 if PPC64 && !PPC_64K_PAGES
533 default "13" if PPC64 && !PPC_64K_PAGES
534 range 9 64 if PPC32 && PPC_16K_PAGES
535 default "9" if PPC32 && PPC_16K_PAGES
536 range 7 64 if PPC32 && PPC_64K_PAGES
537 default "7" if PPC32 && PPC_64K_PAGES
538 range 5 64 if PPC32 && PPC_256K_PAGES
539 default "5" if PPC32 && PPC_256K_PAGES
543 The kernel memory allocator divides physically contiguous memory
544 blocks into "zones", where each zone is a power of two number of
545 pages. This option selects the largest power of two that the kernel
546 keeps in the memory allocator. If you need to allocate very large
547 blocks of physically contiguous memory, then you may need to
550 This config option is actually maximum order plus one. For example,
551 a value of 11 means that the largest free memory block is 2^10 pages.
553 The page size is not necessarily 4KB. For example, on 64-bit
554 systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES. Keep
555 this in mind when choosing a value for this option.
557 config PPC_SUBPAGE_PROT
558 bool "Support setting protections for 4k subpages"
559 depends on PPC_STD_MMU_64 && PPC_64K_PAGES
561 This option adds support for a system call to allow user programs
562 to set access permissions (read/write, readonly, or no access)
563 on the 4k subpages of each 64k page.
566 bool "SMT (Hyperthreading) scheduler support"
567 depends on PPC64 && SMP
569 SMT scheduler support improves the CPU scheduler's decision making
570 when dealing with POWER5 cpus at a cost of slightly increased
571 overhead in some places. If unsure say N here.
573 config PPC_DENORMALISATION
574 bool "PowerPC denormalisation exception handling"
575 depends on PPC_BOOK3S_64
578 Add support for handling denormalisation of single precision
579 values. Useful for bare metal only. If unsure say Y here.
582 bool "Default bootloader kernel arguments"
585 string "Initial kernel command string"
586 depends on CMDLINE_BOOL
587 default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
589 On some platforms, there is currently no way for the boot loader to
590 pass arguments to the kernel. For these platforms, you can supply
591 some command-line options at build time by entering them here. In
592 most cases you will need to specify the root device here.
595 string "Additional default image types"
597 List additional targets to be built by the bootwrapper here (separated
598 by spaces). This is useful for targets that depend of device tree
599 files in the .dts directory.
601 Targets in this list will be build as part of the default build
602 target, or when the user does a 'make zImage' or a
603 'make zImage.initrd'.
605 If unsure, leave blank
607 config ARCH_WANTS_FREEZER_CONTROL
611 source kernel/power/Kconfig
614 bool "Enable seccomp to safely compute untrusted bytecode"
618 This kernel feature is useful for number crunching applications
619 that may need to compute untrusted bytecode during their
620 execution. By using pipes or other transports made available to
621 the process as file descriptors supporting the read/write
622 syscalls, it's possible to isolate those applications in
623 their own address space using seccomp. Once seccomp is
624 enabled via /proc/<pid>/seccomp, it cannot be disabled
625 and the task is only allowed to execute a few safe syscalls
626 defined by each seccomp mode.
628 If unsure, say Y. Only embedded should say N here.
639 bool "Support for ISA-bus hardware"
640 depends on PPC_PREP || PPC_CHRP
643 Find out whether you have ISA slots on your motherboard. ISA is the
644 name of a bus system, i.e. the way the CPU talks to the other stuff
645 inside your box. If you have an Apple machine, say N here; if you
646 have an IBM RS/6000 or pSeries machine or a PReP machine, say Y. If
647 you have an embedded board, consult your board documentation.
653 config NEED_DMA_MAP_STATE
654 def_bool (PPC64 || NOT_COHERENT_CACHE)
656 config NEED_SG_DMA_LENGTH
659 config GENERIC_ISA_DMA
661 depends on ISA_DMA_API
664 config PPC_INDIRECT_PCI
667 default y if 40x || 44x
678 select HAVE_CAN_FLEXCAN if NET && CAN
683 select PPC_INDIRECT_PCI
689 depends on SUSPEND && (PPC_85xx || PPC_86xx)
691 Freescale MPC85xx/MPC86xx power management controller support
692 (suspend/resume). For MPC83xx see platforms/83xx/suspend.c
697 depends on SUSPEND && (44x || 40x)
699 PPC4xx Clock Power Management (CPM) support (suspend/resume).
700 It also enables support for two different idle states (idle-wait
707 bool "Freescale Local Bus support"
710 Enables reporting of errors from the Freescale local bus
711 controller. Also contains some common code used by
712 drivers for specific local bus peripherals.
720 depends on PPC_83xx || QUICC_ENGINE || CPM2
722 Freescale General-purpose Timers support
724 # Yes MCA RS/6000s exist but Linux-PPC does not currently support any
728 # Platforms that what PCI turned unconditionally just do select PCI
729 # in their config node. Platforms that want to choose at config
730 # time should select PPC_PCI_CHOICE
731 config PPC_PCI_CHOICE
735 bool "PCI support" if PPC_PCI_CHOICE
736 default y if !40x && !CPM2 && !8xx && !PPC_83xx \
737 && !PPC_85xx && !PPC_86xx && !GAMECUBE_COMMON
738 default PCI_PERMEDIA if !4xx && !CPM2 && !8xx
739 default PCI_QSPAN if !4xx && !CPM2 && 8xx
740 select ARCH_SUPPORTS_MSI
741 select GENERIC_PCI_IOMAP
743 Find out whether your system includes a PCI bus. PCI is the name of
744 a bus system, i.e. the way the CPU talks to the other stuff inside
745 your box. If you say Y here, the kernel will include drivers and
746 infrastructure code to support PCI bus devices.
756 depends on !4xx && !CPM2 && 8xx
759 Say Y here if you have a system based on a Motorola 8xx-series
760 embedded processor with a QSPAN PCI interface, otherwise say N.
764 depends on PCI && 8260
765 select PPC_INDIRECT_PCI
769 bool "Enable workaround for MPC826x erratum PCI 9"
770 depends on PCI_8260 && !8272
773 source "drivers/pci/pcie/Kconfig"
775 source "drivers/pci/Kconfig"
777 source "drivers/pcmcia/Kconfig"
779 source "drivers/pci/hotplug/Kconfig"
786 bool "RapidIO support"
787 depends on HAS_RAPIDIO || PCI
789 If you say Y here, the kernel will include drivers and
790 infrastructure code to support RapidIO interconnect devices.
793 bool "Freescale Embedded SRIO Controller support"
794 depends on RAPIDIO && HAS_RAPIDIO
797 Include support for RapidIO controller on Freescale embedded
798 processors (MPC8548, MPC8641, etc).
800 source "drivers/rapidio/Kconfig"
804 config NONSTATIC_KERNEL
808 menu "Advanced setup"
811 config ADVANCED_OPTIONS
812 bool "Prompt for advanced kernel configuration options"
814 This option will enable prompting for a variety of advanced kernel
815 configuration options. These options can cause the kernel to not
816 work if they are set incorrectly, but can be used to optimize certain
817 aspects of kernel memory management.
819 Unless you know what you are doing, say N here.
821 comment "Default settings for advanced configuration options are used"
822 depends on !ADVANCED_OPTIONS
824 config LOWMEM_SIZE_BOOL
825 bool "Set maximum low memory"
826 depends on ADVANCED_OPTIONS
828 This option allows you to set the maximum amount of memory which
829 will be used as "low memory", that is, memory which the kernel can
830 access directly, without having to set up a kernel virtual mapping.
831 This can be useful in optimizing the layout of kernel virtual
834 Say N here unless you know what you are doing.
837 hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
840 config LOWMEM_CAM_NUM_BOOL
841 bool "Set number of CAMs to use to map low memory"
842 depends on ADVANCED_OPTIONS && FSL_BOOKE
844 This option allows you to set the maximum number of CAM slots that
845 will be used to map low memory. There are a limited number of slots
846 available and even more limited number that will fit in the L1 MMU.
847 However, using more entries will allow mapping more low memory. This
848 can be useful in optimizing the layout of kernel virtual memory.
850 Say N here unless you know what you are doing.
852 config LOWMEM_CAM_NUM
854 int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL
857 config DYNAMIC_MEMSTART
858 bool "Enable page aligned dynamic load address for kernel (EXPERIMENTAL)"
859 depends on EXPERIMENTAL && ADVANCED_OPTIONS && FLATMEM && (FSL_BOOKE || 44x)
860 select NONSTATIC_KERNEL
862 This option enables the kernel to be loaded at any page aligned
863 physical address. The kernel creates a mapping from KERNELBASE to
864 the address where the kernel is loaded. The page size here implies
865 the TLB page size of the mapping for kernel on the particular platform.
866 Please refer to the init code for finding the TLB page size.
868 DYNAMIC_MEMSTART is an easy way of implementing pseudo-RELOCATABLE
869 kernel image, where the only restriction is the page aligned kernel
870 load address. When this option is enabled, the compile time physical
871 address CONFIG_PHYSICAL_START is ignored.
873 This option is overridden by CONFIG_RELOCATABLE
876 bool "Build a relocatable kernel (EXPERIMENTAL)"
877 depends on EXPERIMENTAL && ADVANCED_OPTIONS && FLATMEM && 44x
878 select NONSTATIC_KERNEL
880 This builds a kernel image that is capable of running at the
881 location the kernel is loaded at, without any alignment restrictions.
882 This feature is a superset of DYNAMIC_MEMSTART and hence overrides it.
884 One use is for the kexec on panic case where the recovery kernel
885 must live at a different physical address than the primary
888 Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address
889 it has been loaded at and the compile time physical addresses
890 CONFIG_PHYSICAL_START is ignored. However CONFIG_PHYSICAL_START
891 setting can still be useful to bootwrappers that need to know the
892 load address of the kernel (eg. u-boot/mkimage).
894 config RELOCATABLE_PPC32
896 depends on PPC32 && RELOCATABLE
898 config PAGE_OFFSET_BOOL
899 bool "Set custom page offset address"
900 depends on ADVANCED_OPTIONS
902 This option allows you to set the kernel virtual address at which
903 the kernel will map low memory. This can be useful in optimizing
904 the virtual memory layout of the system.
906 Say N here unless you know what you are doing.
909 hex "Virtual address of memory base" if PAGE_OFFSET_BOOL
912 config KERNEL_START_BOOL
913 bool "Set custom kernel base address"
914 depends on ADVANCED_OPTIONS
916 This option allows you to set the kernel virtual address at which
917 the kernel will be loaded. Normally this should match PAGE_OFFSET
918 however there are times (like kdump) that one might not want them
921 Say N here unless you know what you are doing.
924 hex "Virtual address of kernel base" if KERNEL_START_BOOL
925 default PAGE_OFFSET if PAGE_OFFSET_BOOL
926 default "0xc2000000" if CRASH_DUMP && !NONSTATIC_KERNEL
929 config PHYSICAL_START_BOOL
930 bool "Set physical address where the kernel is loaded"
931 depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE
933 This gives the physical address where the kernel is loaded.
935 Say N here unless you know what you are doing.
937 config PHYSICAL_START
938 hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL
939 default "0x02000000" if PPC_STD_MMU && CRASH_DUMP && !NONSTATIC_KERNEL
942 config PHYSICAL_ALIGN
944 default "0x04000000" if FSL_BOOKE
946 This value puts the alignment restrictions on physical address
947 where kernel is loaded and run from. Kernel is compiled for an
948 address which meets above alignment restriction.
950 config TASK_SIZE_BOOL
951 bool "Set custom user task size"
952 depends on ADVANCED_OPTIONS
954 This option allows you to set the amount of virtual address space
955 allocated to user tasks. This can be useful in optimizing the
956 virtual memory layout of the system.
958 Say N here unless you know what you are doing.
961 hex "Size of user task space" if TASK_SIZE_BOOL
962 default "0x80000000" if PPC_PREP || PPC_8xx
965 config CONSISTENT_SIZE_BOOL
966 bool "Set custom consistent memory pool size"
967 depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
969 This option allows you to set the size of the
970 consistent memory pool. This pool of virtual memory
971 is used to make consistent memory allocations.
973 config CONSISTENT_SIZE
974 hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
975 default "0x00200000" if NOT_COHERENT_CACHE
978 bool "Pinned Kernel TLBs (860 ONLY)"
979 depends on ADVANCED_OPTIONS && 8xx
984 bool "Build a relocatable kernel"
985 select NONSTATIC_KERNEL
987 This builds a kernel image that is capable of running anywhere
988 in the RMA (real memory area) at any 16k-aligned base address.
989 The kernel is linked as a position-independent executable (PIE)
990 and contains dynamic relocations which are processed early
991 in the bootup process.
993 One use is for the kexec on panic case where the recovery kernel
994 must live at a different physical address than the primary
999 default "0xc000000000000000"
1002 default "0xc000000000000000"
1003 config PHYSICAL_START
1005 default "0x00000000"
1008 source "net/Kconfig"
1010 source "drivers/Kconfig"
1014 source "arch/powerpc/sysdev/qe_lib/Kconfig"
1016 source "lib/Kconfig"
1018 source "arch/powerpc/Kconfig.debug"
1020 source "security/Kconfig"
1024 depends on COMPAT && KEYS
1027 source "crypto/Kconfig"
1034 config PPC_LIB_RHEAP
1037 source "arch/powerpc/kvm/Kconfig"