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
141 select ARCH_SUPPORTS_ATOMIC_RMW
150 select COMPAT_BINFMT_ELF
151 select ARCH_WANT_OLD_COMPAT_IPC
152 select COMPAT_OLD_SIGACTION
154 config SYSVIPC_COMPAT
156 depends on COMPAT && SYSVIPC
159 # All PPC32s use generic nvram driver through ppc_md
164 config SCHED_OMIT_FRAME_POINTER
168 config ARCH_MAY_HAVE_PC_FDC
170 default !PPC_PSERIES || PCI
175 config PPC_UDBG_16550
179 config GENERIC_TBSYNC
181 default y if PPC32 && SMP
193 config SYS_SUPPORTS_APM_EMULATION
194 default y if PMAC_APM_EMU
200 Used to allow a board to specify it wants an ePAPR compliant wrapper.
203 config DEFAULT_UIMAGE
206 Used to allow a board to specify it wants a uImage built by default
212 config ARCH_HIBERNATION_POSSIBLE
216 config ARCH_SUSPEND_POSSIBLE
218 depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx || \
219 (PPC_85xx && !PPC_E500MC) || PPC_86xx || PPC_PSERIES \
222 config PPC_DCR_NATIVE
232 depends on PPC_DCR_NATIVE || PPC_DCR_MMIO
235 config PPC_OF_PLATFORM_PCI
238 depends on PPC64 # not supported on 32 bits yet
241 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
244 config ARCH_SUPPORTS_UPROBES
247 config PPC_ADV_DEBUG_REGS
249 depends on 40x || BOOKE
252 config PPC_ADV_DEBUG_IACS
254 depends on PPC_ADV_DEBUG_REGS
258 config PPC_ADV_DEBUG_DACS
260 depends on PPC_ADV_DEBUG_REGS
263 config PPC_ADV_DEBUG_DVCS
265 depends on PPC_ADV_DEBUG_REGS
269 config PPC_ADV_DEBUG_DAC_RANGE
271 depends on PPC_ADV_DEBUG_REGS && 44x
274 config PPC_EMULATE_SSTEP
276 default y if KPROBES || UPROBES || XMON || HAVE_HW_BREAKPOINT
278 source "init/Kconfig"
280 source "kernel/Kconfig.freezer"
282 source "arch/powerpc/sysdev/Kconfig"
283 source "arch/powerpc/platforms/Kconfig"
285 menu "Kernel options"
288 bool "High memory support"
291 source kernel/Kconfig.hz
292 source kernel/Kconfig.preempt
293 source "fs/Kconfig.binfmt"
295 config HUGETLB_PAGE_SIZE_VARIABLE
297 depends on HUGETLB_PAGE
300 config MATH_EMULATION
301 bool "Math emulation"
302 depends on 4xx || 8xx || E200 || PPC_MPC832x || E500
304 Some PowerPC chips designed for embedded applications do not have
305 a floating-point unit and therefore do not implement the
306 floating-point instructions in the PowerPC instruction set. If you
307 say Y here, the kernel will include code to emulate a floating-point
308 unit, which will allow programs that use floating-point
311 config PPC_TRANSACTIONAL_MEM
312 bool "Transactional Memory support for POWERPC"
313 depends on PPC_BOOK3S_64
317 Support user-mode Transactional Memory on POWERPC.
319 config 8XX_MINIMAL_FPEMU
320 bool "Minimal math emulation for 8xx"
321 depends on 8xx && !MATH_EMULATION
323 Older arch/ppc kernels still emulated a few floating point
324 instructions such as load and store, even when full math
325 emulation is disabled. Say "Y" here if you want to preserve
328 It is recommended that you build a soft-float userspace instead.
334 bool "SWIOTLB support"
338 Support for IO bounce buffering for systems without an IOMMU.
339 This allows us to DMA to the full physical address space on
340 platforms where the size of a physical address is larger
341 than the bus address. Not all platforms support this.
344 bool "Support for enabling/disabling CPUs"
345 depends on SMP && HOTPLUG && (PPC_PSERIES || \
346 PPC_PMAC || PPC_POWERNV || (PPC_85xx && !PPC_E500MC))
348 Say Y here to be able to disable and re-enable individual
349 CPUs at runtime on SMP machines.
351 Say N if you are unsure.
353 config ARCH_CPU_PROBE_RELEASE
355 depends on HOTPLUG_CPU
357 config ARCH_ENABLE_MEMORY_HOTPLUG
360 config ARCH_HAS_WALK_MEMORY
363 config ARCH_ENABLE_MEMORY_HOTREMOVE
367 bool "kexec system call"
368 depends on (PPC_BOOK3S || FSL_BOOKE || (44x && !SMP))
370 kexec is a system call that implements the ability to shutdown your
371 current kernel, and to start another kernel. It is like a reboot
372 but it is independent of the system firmware. And like a reboot
373 you can start any kernel with it, not just Linux.
375 The name comes from the similarity to the exec system call.
377 It is an ongoing process to be certain the hardware in a machine
378 is properly shutdown, so do not be surprised if this code does not
379 initially work for you. It may help to enable device hotplugging
380 support. As of this writing the exact hardware interface is
381 strongly in flux, so no good recommendation can be made.
384 bool "Build a kdump crash kernel"
385 depends on PPC64 || 6xx || FSL_BOOKE || (44x && !SMP)
386 select RELOCATABLE if PPC64 || 44x
387 select DYNAMIC_MEMSTART if FSL_BOOKE
389 Build a kernel suitable for use as a kdump capture kernel.
390 The same kernel binary can be used as production kernel and dump
394 bool "Firmware-assisted dump"
395 depends on PPC64 && PPC_RTAS && CRASH_DUMP
397 A robust mechanism to get reliable kernel crash dump with
398 assistance from firmware. This approach does not use kexec,
399 instead firmware assists in booting the kdump kernel
400 while preserving memory contents. Firmware-assisted dump
401 is meant to be a kdump replacement offering robustness and
402 speed not possible without system firmware assistance.
407 bool "Distribute interrupts on all CPUs by default"
408 depends on SMP && !MV64360
410 This option gives the kernel permission to distribute IRQs across
411 multiple CPUs. Saying N here will route all IRQs to the first
412 CPU. Generally saying Y is safe, although some problems have been
413 reported with SMP Power Macintoshes with this option enabled.
418 default y if SMP && PPC_PSERIES
424 depends on NEED_MULTIPLE_NODES
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
576 default "y" if PPC_POWERNV
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"
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, say Y. If you have an
647 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
682 select PPC_INDIRECT_PCI
688 depends on SUSPEND && (PPC_85xx || PPC_86xx)
690 Freescale MPC85xx/MPC86xx power management controller support
691 (suspend/resume). For MPC83xx see platforms/83xx/suspend.c
696 depends on SUSPEND && (44x || 40x)
698 PPC4xx Clock Power Management (CPM) support (suspend/resume).
699 It also enables support for two different idle states (idle-wait
706 bool "Freescale Local Bus support"
709 Enables reporting of errors from the Freescale local bus
710 controller. Also contains some common code used by
711 drivers for specific local bus peripherals.
719 depends on PPC_83xx || QUICC_ENGINE || CPM2
721 Freescale General-purpose Timers support
723 # Yes MCA RS/6000s exist but Linux-PPC does not currently support any
727 # Platforms that what PCI turned unconditionally just do select PCI
728 # in their config node. Platforms that want to choose at config
729 # time should select PPC_PCI_CHOICE
730 config PPC_PCI_CHOICE
734 bool "PCI support" if PPC_PCI_CHOICE
735 default y if !40x && !CPM2 && !8xx && !PPC_83xx \
736 && !PPC_85xx && !PPC_86xx && !GAMECUBE_COMMON
737 default PCI_QSPAN if !4xx && !CPM2 && 8xx
738 select ARCH_SUPPORTS_MSI
739 select GENERIC_PCI_IOMAP
741 Find out whether your system includes a PCI bus. PCI is the name of
742 a bus system, i.e. the way the CPU talks to the other stuff inside
743 your box. If you say Y here, the kernel will include drivers and
744 infrastructure code to support PCI bus devices.
754 depends on !4xx && !CPM2 && 8xx
757 Say Y here if you have a system based on a Motorola 8xx-series
758 embedded processor with a QSPAN PCI interface, otherwise say N.
762 depends on PCI && 8260
763 select PPC_INDIRECT_PCI
766 source "drivers/pci/pcie/Kconfig"
768 source "drivers/pci/Kconfig"
770 source "drivers/pcmcia/Kconfig"
772 source "drivers/pci/hotplug/Kconfig"
779 bool "RapidIO support"
780 depends on HAS_RAPIDIO || PCI
782 If you say Y here, the kernel will include drivers and
783 infrastructure code to support RapidIO interconnect devices.
786 bool "Freescale Embedded SRIO Controller support"
787 depends on RAPIDIO && HAS_RAPIDIO
790 Include support for RapidIO controller on Freescale embedded
791 processors (MPC8548, MPC8641, etc).
793 source "drivers/rapidio/Kconfig"
797 config NONSTATIC_KERNEL
801 menu "Advanced setup"
804 config ADVANCED_OPTIONS
805 bool "Prompt for advanced kernel configuration options"
807 This option will enable prompting for a variety of advanced kernel
808 configuration options. These options can cause the kernel to not
809 work if they are set incorrectly, but can be used to optimize certain
810 aspects of kernel memory management.
812 Unless you know what you are doing, say N here.
814 comment "Default settings for advanced configuration options are used"
815 depends on !ADVANCED_OPTIONS
817 config LOWMEM_SIZE_BOOL
818 bool "Set maximum low memory"
819 depends on ADVANCED_OPTIONS
821 This option allows you to set the maximum amount of memory which
822 will be used as "low memory", that is, memory which the kernel can
823 access directly, without having to set up a kernel virtual mapping.
824 This can be useful in optimizing the layout of kernel virtual
827 Say N here unless you know what you are doing.
830 hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
833 config LOWMEM_CAM_NUM_BOOL
834 bool "Set number of CAMs to use to map low memory"
835 depends on ADVANCED_OPTIONS && FSL_BOOKE
837 This option allows you to set the maximum number of CAM slots that
838 will be used to map low memory. There are a limited number of slots
839 available and even more limited number that will fit in the L1 MMU.
840 However, using more entries will allow mapping more low memory. This
841 can be useful in optimizing the layout of kernel virtual memory.
843 Say N here unless you know what you are doing.
845 config LOWMEM_CAM_NUM
847 int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL
850 config DYNAMIC_MEMSTART
851 bool "Enable page aligned dynamic load address for kernel"
852 depends on ADVANCED_OPTIONS && FLATMEM && (FSL_BOOKE || 44x)
853 select NONSTATIC_KERNEL
855 This option enables the kernel to be loaded at any page aligned
856 physical address. The kernel creates a mapping from KERNELBASE to
857 the address where the kernel is loaded. The page size here implies
858 the TLB page size of the mapping for kernel on the particular platform.
859 Please refer to the init code for finding the TLB page size.
861 DYNAMIC_MEMSTART is an easy way of implementing pseudo-RELOCATABLE
862 kernel image, where the only restriction is the page aligned kernel
863 load address. When this option is enabled, the compile time physical
864 address CONFIG_PHYSICAL_START is ignored.
866 This option is overridden by CONFIG_RELOCATABLE
869 bool "Build a relocatable kernel"
870 depends on ADVANCED_OPTIONS && FLATMEM && 44x
871 select NONSTATIC_KERNEL
873 This builds a kernel image that is capable of running at the
874 location the kernel is loaded at, without any alignment restrictions.
875 This feature is a superset of DYNAMIC_MEMSTART and hence overrides it.
877 One use is for the kexec on panic case where the recovery kernel
878 must live at a different physical address than the primary
881 Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address
882 it has been loaded at and the compile time physical addresses
883 CONFIG_PHYSICAL_START is ignored. However CONFIG_PHYSICAL_START
884 setting can still be useful to bootwrappers that need to know the
885 load address of the kernel (eg. u-boot/mkimage).
887 config RELOCATABLE_PPC32
889 depends on PPC32 && RELOCATABLE
891 config PAGE_OFFSET_BOOL
892 bool "Set custom page offset address"
893 depends on ADVANCED_OPTIONS
895 This option allows you to set the kernel virtual address at which
896 the kernel will map low memory. This can be useful in optimizing
897 the virtual memory layout of the system.
899 Say N here unless you know what you are doing.
902 hex "Virtual address of memory base" if PAGE_OFFSET_BOOL
905 config KERNEL_START_BOOL
906 bool "Set custom kernel base address"
907 depends on ADVANCED_OPTIONS
909 This option allows you to set the kernel virtual address at which
910 the kernel will be loaded. Normally this should match PAGE_OFFSET
911 however there are times (like kdump) that one might not want them
914 Say N here unless you know what you are doing.
917 hex "Virtual address of kernel base" if KERNEL_START_BOOL
918 default PAGE_OFFSET if PAGE_OFFSET_BOOL
919 default "0xc2000000" if CRASH_DUMP && !NONSTATIC_KERNEL
922 config PHYSICAL_START_BOOL
923 bool "Set physical address where the kernel is loaded"
924 depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE
926 This gives the physical address where the kernel is loaded.
928 Say N here unless you know what you are doing.
930 config PHYSICAL_START
931 hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL
932 default "0x02000000" if PPC_STD_MMU && CRASH_DUMP && !NONSTATIC_KERNEL
935 config PHYSICAL_ALIGN
937 default "0x04000000" if FSL_BOOKE
939 This value puts the alignment restrictions on physical address
940 where kernel is loaded and run from. Kernel is compiled for an
941 address which meets above alignment restriction.
943 config TASK_SIZE_BOOL
944 bool "Set custom user task size"
945 depends on ADVANCED_OPTIONS
947 This option allows you to set the amount of virtual address space
948 allocated to user tasks. This can be useful in optimizing the
949 virtual memory layout of the system.
951 Say N here unless you know what you are doing.
954 hex "Size of user task space" if TASK_SIZE_BOOL
955 default "0x80000000" if PPC_8xx
958 config CONSISTENT_SIZE_BOOL
959 bool "Set custom consistent memory pool size"
960 depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
962 This option allows you to set the size of the
963 consistent memory pool. This pool of virtual memory
964 is used to make consistent memory allocations.
966 config CONSISTENT_SIZE
967 hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
968 default "0x00200000" if NOT_COHERENT_CACHE
971 bool "Pinned Kernel TLBs (860 ONLY)"
972 depends on ADVANCED_OPTIONS && 8xx
977 bool "Build a relocatable kernel"
978 select NONSTATIC_KERNEL
980 This builds a kernel image that is capable of running anywhere
981 in the RMA (real memory area) at any 16k-aligned base address.
982 The kernel is linked as a position-independent executable (PIE)
983 and contains dynamic relocations which are processed early
984 in the bootup process.
986 One use is for the kexec on panic case where the recovery kernel
987 must live at a different physical address than the primary
990 # This value must have zeroes in the bottom 60 bits otherwise lots will break
993 default "0xc000000000000000"
996 default "0xc000000000000000"
997 config PHYSICAL_START
1002 source "net/Kconfig"
1004 source "drivers/Kconfig"
1008 source "arch/powerpc/sysdev/qe_lib/Kconfig"
1010 source "lib/Kconfig"
1012 source "arch/powerpc/Kconfig.debug"
1014 source "security/Kconfig"
1018 depends on COMPAT && KEYS
1021 source "crypto/Kconfig"
1028 config PPC_LIB_RHEAP
1031 source "arch/powerpc/kvm/Kconfig"