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
90 select OF_EARLY_FLATTREE
91 select HAVE_FTRACE_MCOUNT_RECORD
92 select HAVE_DYNAMIC_FTRACE
93 select HAVE_FUNCTION_TRACER
94 select HAVE_FUNCTION_GRAPH_TRACER
95 select SYSCTL_EXCEPTION_TRACE
96 select ARCH_WANT_OPTIONAL_GPIOLIB
97 select VIRT_TO_BUS if !PPC64
99 select HAVE_IOREMAP_PROT
100 select HAVE_EFFICIENT_UNALIGNED_ACCESS
102 select HAVE_ARCH_KGDB
103 select HAVE_KRETPROBES
104 select HAVE_ARCH_TRACEHOOK
106 select HAVE_MEMBLOCK_NODE_MAP
107 select HAVE_DMA_ATTRS
108 select HAVE_DMA_API_DEBUG
109 select USE_GENERIC_SMP_HELPERS if SMP
111 select HAVE_DEBUG_KMEMLEAK
112 select GENERIC_ATOMIC64 if PPC32
113 select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
114 select HAVE_PERF_EVENTS
115 select HAVE_REGS_AND_STACK_ACCESS_API
116 select HAVE_HW_BREAKPOINT if PERF_EVENTS && PPC_BOOK3S_64
117 select HAVE_GENERIC_HARDIRQS
118 select ARCH_WANT_IPC_PARSE_VERSION
121 select GENERIC_IRQ_SHOW
122 select GENERIC_IRQ_SHOW_LEVEL
123 select IRQ_FORCED_THREADING
124 select HAVE_RCU_TABLE_FREE if SMP
125 select HAVE_SYSCALL_TRACEPOINTS
126 select HAVE_BPF_JIT if PPC64
127 select HAVE_ARCH_JUMP_LABEL
128 select ARCH_HAVE_NMI_SAFE_CMPXCHG
129 select GENERIC_SMP_IDLE_THREAD
130 select GENERIC_CMOS_UPDATE
131 select GENERIC_TIME_VSYSCALL_OLD
132 select GENERIC_CLOCKEVENTS
133 select GENERIC_STRNCPY_FROM_USER
134 select GENERIC_STRNLEN_USER
135 select HAVE_MOD_ARCH_SPECIFIC
136 select MODULES_USE_ELF_RELA
137 select CLONE_BACKWARDS
138 select ARCH_USE_BUILTIN_BSWAP
139 select OLD_SIGSUSPEND
140 select OLD_SIGACTION if PPC32
149 select COMPAT_BINFMT_ELF
150 select ARCH_WANT_OLD_COMPAT_IPC
151 select COMPAT_OLD_SIGACTION
153 config SYSVIPC_COMPAT
155 depends on COMPAT && SYSVIPC
158 # All PPC32s use generic nvram driver through ppc_md
163 config SCHED_OMIT_FRAME_POINTER
167 config ARCH_MAY_HAVE_PC_FDC
169 default !PPC_PSERIES || PCI
174 config PPC_UDBG_16550
178 config GENERIC_TBSYNC
180 default y if PPC32 && SMP
192 config SYS_SUPPORTS_APM_EMULATION
193 default y if PMAC_APM_EMU
199 Used to allow a board to specify it wants an ePAPR compliant wrapper.
202 config DEFAULT_UIMAGE
205 Used to allow a board to specify it wants a uImage built by default
211 config ARCH_HIBERNATION_POSSIBLE
215 config ARCH_SUSPEND_POSSIBLE
217 depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx || \
218 (PPC_85xx && !PPC_E500MC) || PPC_86xx || PPC_PSERIES \
221 config PPC_DCR_NATIVE
231 depends on PPC_DCR_NATIVE || PPC_DCR_MMIO
234 config PPC_OF_PLATFORM_PCI
237 depends on PPC64 # not supported on 32 bits yet
240 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
243 config ARCH_SUPPORTS_UPROBES
246 config PPC_ADV_DEBUG_REGS
248 depends on 40x || BOOKE
251 config PPC_ADV_DEBUG_IACS
253 depends on PPC_ADV_DEBUG_REGS
257 config PPC_ADV_DEBUG_DACS
259 depends on PPC_ADV_DEBUG_REGS
262 config PPC_ADV_DEBUG_DVCS
264 depends on PPC_ADV_DEBUG_REGS
268 config PPC_ADV_DEBUG_DAC_RANGE
270 depends on PPC_ADV_DEBUG_REGS && 44x
273 config PPC_EMULATE_SSTEP
275 default y if KPROBES || UPROBES || XMON || HAVE_HW_BREAKPOINT
277 source "init/Kconfig"
279 source "kernel/Kconfig.freezer"
281 source "arch/powerpc/sysdev/Kconfig"
282 source "arch/powerpc/platforms/Kconfig"
284 menu "Kernel options"
287 bool "High memory support"
290 source kernel/Kconfig.hz
291 source kernel/Kconfig.preempt
292 source "fs/Kconfig.binfmt"
294 config HUGETLB_PAGE_SIZE_VARIABLE
296 depends on HUGETLB_PAGE
299 config MATH_EMULATION
300 bool "Math emulation"
301 depends on 4xx || 8xx || PPC_MPC832x || BOOKE
303 Some PowerPC chips designed for embedded applications do not have
304 a floating-point unit and therefore do not implement the
305 floating-point instructions in the PowerPC instruction set. If you
306 say Y here, the kernel will include code to emulate a floating-point
307 unit, which will allow programs that use floating-point
310 This is also useful to emulate missing (optional) instructions
311 such as fsqrt on cores that do have an FPU but do not implement
312 them (such as Freescale BookE).
314 config PPC_TRANSACTIONAL_MEM
315 bool "Transactional Memory support for POWERPC"
316 depends on PPC_BOOK3S_64
320 Support user-mode Transactional Memory on POWERPC.
322 config 8XX_MINIMAL_FPEMU
323 bool "Minimal math emulation for 8xx"
324 depends on 8xx && !MATH_EMULATION
326 Older arch/ppc kernels still emulated a few floating point
327 instructions such as load and store, even when full math
328 emulation is disabled. Say "Y" here if you want to preserve
331 It is recommended that you build a soft-float userspace instead.
337 bool "SWIOTLB support"
341 Support for IO bounce buffering for systems without an IOMMU.
342 This allows us to DMA to the full physical address space on
343 platforms where the size of a physical address is larger
344 than the bus address. Not all platforms support this.
347 bool "Support for enabling/disabling CPUs"
348 depends on SMP && HOTPLUG && (PPC_PSERIES || \
349 PPC_PMAC || PPC_POWERNV || (PPC_85xx && !PPC_E500MC))
351 Say Y here to be able to disable and re-enable individual
352 CPUs at runtime on SMP machines.
354 Say N if you are unsure.
356 config ARCH_CPU_PROBE_RELEASE
358 depends on HOTPLUG_CPU
360 config ARCH_ENABLE_MEMORY_HOTPLUG
363 config ARCH_HAS_WALK_MEMORY
366 config ARCH_ENABLE_MEMORY_HOTREMOVE
370 bool "kexec system call"
371 depends on (PPC_BOOK3S || FSL_BOOKE || (44x && !SMP))
373 kexec is a system call that implements the ability to shutdown your
374 current kernel, and to start another kernel. It is like a reboot
375 but it is independent of the system firmware. And like a reboot
376 you can start any kernel with it, not just Linux.
378 The name comes from the similarity to the exec system call.
380 It is an ongoing process to be certain the hardware in a machine
381 is properly shutdown, so do not be surprised if this code does not
382 initially work for you. It may help to enable device hotplugging
383 support. As of this writing the exact hardware interface is
384 strongly in flux, so no good recommendation can be made.
387 bool "Build a kdump crash kernel"
388 depends on PPC64 || 6xx || FSL_BOOKE || (44x && !SMP)
389 select RELOCATABLE if PPC64 || 44x
390 select DYNAMIC_MEMSTART if FSL_BOOKE
392 Build a kernel suitable for use as a kdump capture kernel.
393 The same kernel binary can be used as production kernel and dump
397 bool "Firmware-assisted dump"
398 depends on PPC64 && PPC_RTAS && CRASH_DUMP
400 A robust mechanism to get reliable kernel crash dump with
401 assistance from firmware. This approach does not use kexec,
402 instead firmware assists in booting the kdump kernel
403 while preserving memory contents. Firmware-assisted dump
404 is meant to be a kdump replacement offering robustness and
405 speed not possible without system firmware assistance.
410 bool "Distribute interrupts on all CPUs by default"
411 depends on SMP && !MV64360
413 This option gives the kernel permission to distribute IRQs across
414 multiple CPUs. Saying N here will route all IRQs to the first
415 CPU. Generally saying Y is safe, although some problems have been
416 reported with SMP Power Macintoshes with this option enabled.
421 default y if SMP && PPC_PSERIES
427 depends on NEED_MULTIPLE_NODES
429 config ARCH_SELECT_MEMORY_MODEL
433 config ARCH_FLATMEM_ENABLE
435 depends on (PPC64 && !NUMA) || PPC32
437 config ARCH_SPARSEMEM_ENABLE
440 select SPARSEMEM_VMEMMAP_ENABLE
442 config ARCH_SPARSEMEM_DEFAULT
444 depends on (SMP && PPC_PSERIES) || PPC_PS3
446 config SYS_SUPPORTS_HUGETLBFS
451 config ARCH_MEMORY_PROBE
453 depends on MEMORY_HOTPLUG
455 # Some NUMA nodes have memory ranges that span
456 # other nodes. Even though a pfn is valid and
457 # between a node's start and end pfns, it may not
458 # reside on that node. See memmap_init_zone()
460 config NODES_SPAN_OTHER_NODES
462 depends on NEED_MULTIPLE_NODES
464 config PPC_HAS_HASH_64K
470 bool "Using standard binutils settings"
474 Turning this option off allows you to select 256KB PAGE_SIZE on 44x.
475 Note, that kernel will be able to run only those applications,
476 which had been compiled using binutils later than 2.17.50.0.3 with
477 '-zmax-page-size' set to 256K (the default is 64K). Or, if using
478 the older binutils, you can patch them with a trivial patch, which
479 changes the ELF_MAXPAGESIZE definition from 0x10000 to 0x40000.
485 Select the kernel logical page size. Increasing the page size
486 will reduce software overhead at each page boundary, allow
487 hardware prefetch mechanisms to be more effective, and allow
488 larger dma transfers increasing IO efficiency and reducing
489 overhead. However the utilization of memory will increase.
490 For example, each cached file will using a multiple of the
491 page size to hold its contents and the difference between the
492 end of file and the end of page is wasted.
494 Some dedicated systems, such as software raid serving with
495 accelerated calculations, have shown significant increases.
497 If you configure a 64 bit kernel for 64k pages but the
498 processor does not support them, then the kernel will simulate
499 them with 4k pages, loading them on demand, but with the
500 reduced software overhead and larger internal fragmentation.
501 For the 32 bit kernel, a large page option will not be offered
502 unless it is supported by the configured processor.
504 If unsure, choose 4K_PAGES.
510 bool "16k page size" if 44x
513 bool "64k page size" if 44x || PPC_STD_MMU_64 || PPC_BOOK3E_64
514 select PPC_HAS_HASH_64K if PPC_STD_MMU_64
516 config PPC_256K_PAGES
517 bool "256k page size" if 44x
518 depends on !STDBINUTILS
520 Make the page size 256k.
522 As the ELF standard only requires alignment to support page
523 sizes up to 64k, you will need to compile all of your user
524 space applications with a non-standard binutils settings
525 (see the STDBINUTILS description for details).
527 Say N unless you know what you are doing.
531 config FORCE_MAX_ZONEORDER
532 int "Maximum zone order"
533 range 9 64 if PPC64 && PPC_64K_PAGES
534 default "9" if PPC64 && PPC_64K_PAGES
535 range 13 64 if PPC64 && !PPC_64K_PAGES
536 default "13" if PPC64 && !PPC_64K_PAGES
537 range 9 64 if PPC32 && PPC_16K_PAGES
538 default "9" if PPC32 && PPC_16K_PAGES
539 range 7 64 if PPC32 && PPC_64K_PAGES
540 default "7" if PPC32 && PPC_64K_PAGES
541 range 5 64 if PPC32 && PPC_256K_PAGES
542 default "5" if PPC32 && PPC_256K_PAGES
546 The kernel memory allocator divides physically contiguous memory
547 blocks into "zones", where each zone is a power of two number of
548 pages. This option selects the largest power of two that the kernel
549 keeps in the memory allocator. If you need to allocate very large
550 blocks of physically contiguous memory, then you may need to
553 This config option is actually maximum order plus one. For example,
554 a value of 11 means that the largest free memory block is 2^10 pages.
556 The page size is not necessarily 4KB. For example, on 64-bit
557 systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES. Keep
558 this in mind when choosing a value for this option.
560 config PPC_SUBPAGE_PROT
561 bool "Support setting protections for 4k subpages"
562 depends on PPC_STD_MMU_64 && PPC_64K_PAGES
564 This option adds support for a system call to allow user programs
565 to set access permissions (read/write, readonly, or no access)
566 on the 4k subpages of each 64k page.
569 bool "SMT (Hyperthreading) scheduler support"
570 depends on PPC64 && SMP
572 SMT scheduler support improves the CPU scheduler's decision making
573 when dealing with POWER5 cpus at a cost of slightly increased
574 overhead in some places. If unsure say N here.
576 config PPC_DENORMALISATION
577 bool "PowerPC denormalisation exception handling"
578 depends on PPC_BOOK3S_64
581 Add support for handling denormalisation of single precision
582 values. Useful for bare metal only. If unsure say Y here.
585 bool "Default bootloader kernel arguments"
588 string "Initial kernel command string"
589 depends on CMDLINE_BOOL
590 default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
592 On some platforms, there is currently no way for the boot loader to
593 pass arguments to the kernel. For these platforms, you can supply
594 some command-line options at build time by entering them here. In
595 most cases you will need to specify the root device here.
598 string "Additional default image types"
600 List additional targets to be built by the bootwrapper here (separated
601 by spaces). This is useful for targets that depend of device tree
602 files in the .dts directory.
604 Targets in this list will be build as part of the default build
605 target, or when the user does a 'make zImage' or a
606 'make zImage.initrd'.
608 If unsure, leave blank
610 config ARCH_WANTS_FREEZER_CONTROL
614 source kernel/power/Kconfig
617 bool "Enable seccomp to safely compute untrusted bytecode"
621 This kernel feature is useful for number crunching applications
622 that may need to compute untrusted bytecode during their
623 execution. By using pipes or other transports made available to
624 the process as file descriptors supporting the read/write
625 syscalls, it's possible to isolate those applications in
626 their own address space using seccomp. Once seccomp is
627 enabled via /proc/<pid>/seccomp, it cannot be disabled
628 and the task is only allowed to execute a few safe syscalls
629 defined by each seccomp mode.
631 If unsure, say Y. Only embedded should say N here.
642 bool "Support for ISA-bus hardware"
646 Find out whether you have ISA slots on your motherboard. ISA is the
647 name of a bus system, i.e. the way the CPU talks to the other stuff
648 inside your box. If you have an Apple machine, say N here; if you
649 have an IBM RS/6000 or pSeries machine, say Y. If you have an
650 embedded board, consult your board documentation.
656 config NEED_DMA_MAP_STATE
657 def_bool (PPC64 || NOT_COHERENT_CACHE)
659 config NEED_SG_DMA_LENGTH
662 config GENERIC_ISA_DMA
664 depends on ISA_DMA_API
667 config PPC_INDIRECT_PCI
670 default y if 40x || 44x
681 select HAVE_CAN_FLEXCAN if NET && CAN
685 select PPC_INDIRECT_PCI
691 depends on SUSPEND && (PPC_85xx || PPC_86xx)
693 Freescale MPC85xx/MPC86xx power management controller support
694 (suspend/resume). For MPC83xx see platforms/83xx/suspend.c
699 depends on SUSPEND && (44x || 40x)
701 PPC4xx Clock Power Management (CPM) support (suspend/resume).
702 It also enables support for two different idle states (idle-wait
709 bool "Freescale Local Bus support"
712 Enables reporting of errors from the Freescale local bus
713 controller. Also contains some common code used by
714 drivers for specific local bus peripherals.
722 depends on PPC_83xx || QUICC_ENGINE || CPM2
724 Freescale General-purpose Timers support
726 # Yes MCA RS/6000s exist but Linux-PPC does not currently support any
730 # Platforms that what PCI turned unconditionally just do select PCI
731 # in their config node. Platforms that want to choose at config
732 # time should select PPC_PCI_CHOICE
733 config PPC_PCI_CHOICE
737 bool "PCI support" if PPC_PCI_CHOICE
738 default y if !40x && !CPM2 && !8xx && !PPC_83xx \
739 && !PPC_85xx && !PPC_86xx && !GAMECUBE_COMMON
740 default PCI_QSPAN if !4xx && !CPM2 && 8xx
741 select ARCH_SUPPORTS_MSI
742 select GENERIC_PCI_IOMAP
744 Find out whether your system includes a PCI bus. PCI is the name of
745 a bus system, i.e. the way the CPU talks to the other stuff inside
746 your box. If you say Y here, the kernel will include drivers and
747 infrastructure code to support PCI bus devices.
757 depends on !4xx && !CPM2 && 8xx
760 Say Y here if you have a system based on a Motorola 8xx-series
761 embedded processor with a QSPAN PCI interface, otherwise say N.
765 depends on PCI && 8260
766 select PPC_INDIRECT_PCI
769 source "drivers/pci/pcie/Kconfig"
771 source "drivers/pci/Kconfig"
773 source "drivers/pcmcia/Kconfig"
775 source "drivers/pci/hotplug/Kconfig"
782 bool "RapidIO support"
783 depends on HAS_RAPIDIO || PCI
785 If you say Y here, the kernel will include drivers and
786 infrastructure code to support RapidIO interconnect devices.
789 bool "Freescale Embedded SRIO Controller support"
790 depends on RAPIDIO && HAS_RAPIDIO
793 Include support for RapidIO controller on Freescale embedded
794 processors (MPC8548, MPC8641, etc).
796 source "drivers/rapidio/Kconfig"
800 config NONSTATIC_KERNEL
804 menu "Advanced setup"
807 config ADVANCED_OPTIONS
808 bool "Prompt for advanced kernel configuration options"
810 This option will enable prompting for a variety of advanced kernel
811 configuration options. These options can cause the kernel to not
812 work if they are set incorrectly, but can be used to optimize certain
813 aspects of kernel memory management.
815 Unless you know what you are doing, say N here.
817 comment "Default settings for advanced configuration options are used"
818 depends on !ADVANCED_OPTIONS
820 config LOWMEM_SIZE_BOOL
821 bool "Set maximum low memory"
822 depends on ADVANCED_OPTIONS
824 This option allows you to set the maximum amount of memory which
825 will be used as "low memory", that is, memory which the kernel can
826 access directly, without having to set up a kernel virtual mapping.
827 This can be useful in optimizing the layout of kernel virtual
830 Say N here unless you know what you are doing.
833 hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
836 config LOWMEM_CAM_NUM_BOOL
837 bool "Set number of CAMs to use to map low memory"
838 depends on ADVANCED_OPTIONS && FSL_BOOKE
840 This option allows you to set the maximum number of CAM slots that
841 will be used to map low memory. There are a limited number of slots
842 available and even more limited number that will fit in the L1 MMU.
843 However, using more entries will allow mapping more low memory. This
844 can be useful in optimizing the layout of kernel virtual memory.
846 Say N here unless you know what you are doing.
848 config LOWMEM_CAM_NUM
850 int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL
853 config DYNAMIC_MEMSTART
854 bool "Enable page aligned dynamic load address for kernel"
855 depends on ADVANCED_OPTIONS && FLATMEM && (FSL_BOOKE || 44x)
856 select NONSTATIC_KERNEL
858 This option enables the kernel to be loaded at any page aligned
859 physical address. The kernel creates a mapping from KERNELBASE to
860 the address where the kernel is loaded. The page size here implies
861 the TLB page size of the mapping for kernel on the particular platform.
862 Please refer to the init code for finding the TLB page size.
864 DYNAMIC_MEMSTART is an easy way of implementing pseudo-RELOCATABLE
865 kernel image, where the only restriction is the page aligned kernel
866 load address. When this option is enabled, the compile time physical
867 address CONFIG_PHYSICAL_START is ignored.
869 This option is overridden by CONFIG_RELOCATABLE
872 bool "Build a relocatable kernel"
873 depends on ADVANCED_OPTIONS && FLATMEM && 44x
874 select NONSTATIC_KERNEL
876 This builds a kernel image that is capable of running at the
877 location the kernel is loaded at, without any alignment restrictions.
878 This feature is a superset of DYNAMIC_MEMSTART and hence overrides it.
880 One use is for the kexec on panic case where the recovery kernel
881 must live at a different physical address than the primary
884 Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address
885 it has been loaded at and the compile time physical addresses
886 CONFIG_PHYSICAL_START is ignored. However CONFIG_PHYSICAL_START
887 setting can still be useful to bootwrappers that need to know the
888 load address of the kernel (eg. u-boot/mkimage).
890 config RELOCATABLE_PPC32
892 depends on PPC32 && RELOCATABLE
894 config PAGE_OFFSET_BOOL
895 bool "Set custom page offset address"
896 depends on ADVANCED_OPTIONS
898 This option allows you to set the kernel virtual address at which
899 the kernel will map low memory. This can be useful in optimizing
900 the virtual memory layout of the system.
902 Say N here unless you know what you are doing.
905 hex "Virtual address of memory base" if PAGE_OFFSET_BOOL
908 config KERNEL_START_BOOL
909 bool "Set custom kernel base address"
910 depends on ADVANCED_OPTIONS
912 This option allows you to set the kernel virtual address at which
913 the kernel will be loaded. Normally this should match PAGE_OFFSET
914 however there are times (like kdump) that one might not want them
917 Say N here unless you know what you are doing.
920 hex "Virtual address of kernel base" if KERNEL_START_BOOL
921 default PAGE_OFFSET if PAGE_OFFSET_BOOL
922 default "0xc2000000" if CRASH_DUMP && !NONSTATIC_KERNEL
925 config PHYSICAL_START_BOOL
926 bool "Set physical address where the kernel is loaded"
927 depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE
929 This gives the physical address where the kernel is loaded.
931 Say N here unless you know what you are doing.
933 config PHYSICAL_START
934 hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL
935 default "0x02000000" if PPC_STD_MMU && CRASH_DUMP && !NONSTATIC_KERNEL
938 config PHYSICAL_ALIGN
940 default "0x04000000" if FSL_BOOKE
942 This value puts the alignment restrictions on physical address
943 where kernel is loaded and run from. Kernel is compiled for an
944 address which meets above alignment restriction.
946 config TASK_SIZE_BOOL
947 bool "Set custom user task size"
948 depends on ADVANCED_OPTIONS
950 This option allows you to set the amount of virtual address space
951 allocated to user tasks. This can be useful in optimizing the
952 virtual memory layout of the system.
954 Say N here unless you know what you are doing.
957 hex "Size of user task space" if TASK_SIZE_BOOL
958 default "0x80000000" if PPC_8xx
961 config CONSISTENT_SIZE_BOOL
962 bool "Set custom consistent memory pool size"
963 depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
965 This option allows you to set the size of the
966 consistent memory pool. This pool of virtual memory
967 is used to make consistent memory allocations.
969 config CONSISTENT_SIZE
970 hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
971 default "0x00200000" if NOT_COHERENT_CACHE
974 bool "Pinned Kernel TLBs (860 ONLY)"
975 depends on ADVANCED_OPTIONS && 8xx
980 bool "Build a relocatable kernel"
981 select NONSTATIC_KERNEL
983 This builds a kernel image that is capable of running anywhere
984 in the RMA (real memory area) at any 16k-aligned base address.
985 The kernel is linked as a position-independent executable (PIE)
986 and contains dynamic relocations which are processed early
987 in the bootup process.
989 One use is for the kexec on panic case where the recovery kernel
990 must live at a different physical address than the primary
995 default "0xc000000000000000"
998 default "0xc000000000000000"
999 config PHYSICAL_START
1001 default "0x00000000"
1004 source "net/Kconfig"
1006 source "drivers/Kconfig"
1010 source "arch/powerpc/sysdev/qe_lib/Kconfig"
1012 source "lib/Kconfig"
1014 source "arch/powerpc/Kconfig.debug"
1016 source "security/Kconfig"
1020 depends on COMPAT && KEYS
1023 source "crypto/Kconfig"
1030 config PPC_LIB_RHEAP
1033 source "arch/powerpc/kvm/Kconfig"