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 ARCH_USE_BUILTIN_BSWAP
156 select COMPAT_BINFMT_ELF
157 select ARCH_WANT_OLD_COMPAT_IPC
159 config SYSVIPC_COMPAT
161 depends on COMPAT && SYSVIPC
164 # All PPC32s use generic nvram driver through ppc_md
169 config SCHED_OMIT_FRAME_POINTER
173 config ARCH_MAY_HAVE_PC_FDC
175 default !PPC_PSERIES || PCI
180 config PPC_UDBG_16550
184 config GENERIC_TBSYNC
186 default y if PPC32 && SMP
198 config SYS_SUPPORTS_APM_EMULATION
199 default y if PMAC_APM_EMU
205 Used to allow a board to specify it wants an ePAPR compliant wrapper.
208 config DEFAULT_UIMAGE
211 Used to allow a board to specify it wants a uImage built by default
217 config ARCH_HIBERNATION_POSSIBLE
221 config ARCH_SUSPEND_POSSIBLE
223 depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx || \
224 (PPC_85xx && !PPC_E500MC) || PPC_86xx || PPC_PSERIES \
227 config PPC_DCR_NATIVE
237 depends on PPC_DCR_NATIVE || PPC_DCR_MMIO
240 config PPC_OF_PLATFORM_PCI
243 depends on PPC64 # not supported on 32 bits yet
246 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
249 config ARCH_SUPPORTS_UPROBES
252 config PPC_ADV_DEBUG_REGS
254 depends on 40x || BOOKE
257 config PPC_ADV_DEBUG_IACS
259 depends on PPC_ADV_DEBUG_REGS
263 config PPC_ADV_DEBUG_DACS
265 depends on PPC_ADV_DEBUG_REGS
268 config PPC_ADV_DEBUG_DVCS
270 depends on PPC_ADV_DEBUG_REGS
274 config PPC_ADV_DEBUG_DAC_RANGE
276 depends on PPC_ADV_DEBUG_REGS && 44x
279 config PPC_EMULATE_SSTEP
281 default y if KPROBES || UPROBES || XMON || HAVE_HW_BREAKPOINT
283 source "init/Kconfig"
285 source "kernel/Kconfig.freezer"
287 source "arch/powerpc/sysdev/Kconfig"
288 source "arch/powerpc/platforms/Kconfig"
290 menu "Kernel options"
293 bool "High memory support"
296 source kernel/Kconfig.hz
297 source kernel/Kconfig.preempt
298 source "fs/Kconfig.binfmt"
300 config HUGETLB_PAGE_SIZE_VARIABLE
302 depends on HUGETLB_PAGE
305 config MATH_EMULATION
306 bool "Math emulation"
307 depends on 4xx || 8xx || E200 || PPC_MPC832x || E500
309 Some PowerPC chips designed for embedded applications do not have
310 a floating-point unit and therefore do not implement the
311 floating-point instructions in the PowerPC instruction set. If you
312 say Y here, the kernel will include code to emulate a floating-point
313 unit, which will allow programs that use floating-point
316 config 8XX_MINIMAL_FPEMU
317 bool "Minimal math emulation for 8xx"
318 depends on 8xx && !MATH_EMULATION
320 Older arch/ppc kernels still emulated a few floating point
321 instructions such as load and store, even when full math
322 emulation is disabled. Say "Y" here if you want to preserve
325 It is recommended that you build a soft-float userspace instead.
331 bool "SWIOTLB support"
335 Support for IO bounce buffering for systems without an IOMMU.
336 This allows us to DMA to the full physical address space on
337 platforms where the size of a physical address is larger
338 than the bus address. Not all platforms support this.
341 bool "Support for enabling/disabling CPUs"
342 depends on SMP && HOTPLUG && EXPERIMENTAL && (PPC_PSERIES || \
343 PPC_PMAC || PPC_POWERNV || (PPC_85xx && !PPC_E500MC))
345 Say Y here to be able to disable and re-enable individual
346 CPUs at runtime on SMP machines.
348 Say N if you are unsure.
350 config ARCH_CPU_PROBE_RELEASE
352 depends on HOTPLUG_CPU
354 config ARCH_ENABLE_MEMORY_HOTPLUG
357 config ARCH_HAS_WALK_MEMORY
360 config ARCH_ENABLE_MEMORY_HOTREMOVE
364 bool "kexec system call (EXPERIMENTAL)"
365 depends on (PPC_BOOK3S || FSL_BOOKE || (44x && !SMP)) && EXPERIMENTAL
367 kexec is a system call that implements the ability to shutdown your
368 current kernel, and to start another kernel. It is like a reboot
369 but it is independent of the system firmware. And like a reboot
370 you can start any kernel with it, not just Linux.
372 The name comes from the similarity to the exec system call.
374 It is an ongoing process to be certain the hardware in a machine
375 is properly shutdown, so do not be surprised if this code does not
376 initially work for you. It may help to enable device hotplugging
377 support. As of this writing the exact hardware interface is
378 strongly in flux, so no good recommendation can be made.
381 bool "Build a kdump crash kernel"
382 depends on PPC64 || 6xx || FSL_BOOKE || (44x && !SMP)
383 select RELOCATABLE if PPC64 || 44x
384 select DYNAMIC_MEMSTART if FSL_BOOKE
386 Build a kernel suitable for use as a kdump capture kernel.
387 The same kernel binary can be used as production kernel and dump
391 bool "Firmware-assisted dump"
392 depends on PPC64 && PPC_RTAS && CRASH_DUMP
394 A robust mechanism to get reliable kernel crash dump with
395 assistance from firmware. This approach does not use kexec,
396 instead firmware assists in booting the kdump kernel
397 while preserving memory contents. Firmware-assisted dump
398 is meant to be a kdump replacement offering robustness and
399 speed not possible without system firmware assistance.
404 bool "Distribute interrupts on all CPUs by default"
405 depends on SMP && !MV64360
407 This option gives the kernel permission to distribute IRQs across
408 multiple CPUs. Saying N here will route all IRQs to the first
409 CPU. Generally saying Y is safe, although some problems have been
410 reported with SMP Power Macintoshes with this option enabled.
415 default y if SMP && PPC_PSERIES
421 depends on NEED_MULTIPLE_NODES
423 config MAX_ACTIVE_REGIONS
425 default "256" if PPC64
428 config ARCH_SELECT_MEMORY_MODEL
432 config ARCH_FLATMEM_ENABLE
434 depends on (PPC64 && !NUMA) || PPC32
436 config ARCH_SPARSEMEM_ENABLE
439 select SPARSEMEM_VMEMMAP_ENABLE
441 config ARCH_SPARSEMEM_DEFAULT
443 depends on (SMP && PPC_PSERIES) || PPC_PS3
445 config SYS_SUPPORTS_HUGETLBFS
450 config ARCH_MEMORY_PROBE
452 depends on MEMORY_HOTPLUG
454 # Some NUMA nodes have memory ranges that span
455 # other nodes. Even though a pfn is valid and
456 # between a node's start and end pfns, it may not
457 # reside on that node. See memmap_init_zone()
459 config NODES_SPAN_OTHER_NODES
461 depends on NEED_MULTIPLE_NODES
463 config PPC_HAS_HASH_64K
469 bool "Using standard binutils settings"
473 Turning this option off allows you to select 256KB PAGE_SIZE on 44x.
474 Note, that kernel will be able to run only those applications,
475 which had been compiled using binutils later than 2.17.50.0.3 with
476 '-zmax-page-size' set to 256K (the default is 64K). Or, if using
477 the older binutils, you can patch them with a trivial patch, which
478 changes the ELF_MAXPAGESIZE definition from 0x10000 to 0x40000.
484 Select the kernel logical page size. Increasing the page size
485 will reduce software overhead at each page boundary, allow
486 hardware prefetch mechanisms to be more effective, and allow
487 larger dma transfers increasing IO efficiency and reducing
488 overhead. However the utilization of memory will increase.
489 For example, each cached file will using a multiple of the
490 page size to hold its contents and the difference between the
491 end of file and the end of page is wasted.
493 Some dedicated systems, such as software raid serving with
494 accelerated calculations, have shown significant increases.
496 If you configure a 64 bit kernel for 64k pages but the
497 processor does not support them, then the kernel will simulate
498 them with 4k pages, loading them on demand, but with the
499 reduced software overhead and larger internal fragmentation.
500 For the 32 bit kernel, a large page option will not be offered
501 unless it is supported by the configured processor.
503 If unsure, choose 4K_PAGES.
509 bool "16k page size" if 44x
512 bool "64k page size" if 44x || PPC_STD_MMU_64 || PPC_BOOK3E_64
513 select PPC_HAS_HASH_64K if PPC_STD_MMU_64
515 config PPC_256K_PAGES
516 bool "256k page size" if 44x
517 depends on !STDBINUTILS
519 Make the page size 256k.
521 As the ELF standard only requires alignment to support page
522 sizes up to 64k, you will need to compile all of your user
523 space applications with a non-standard binutils settings
524 (see the STDBINUTILS description for details).
526 Say N unless you know what you are doing.
530 config FORCE_MAX_ZONEORDER
531 int "Maximum zone order"
532 range 9 64 if PPC64 && PPC_64K_PAGES
533 default "9" if PPC64 && PPC_64K_PAGES
534 range 13 64 if PPC64 && !PPC_64K_PAGES
535 default "13" if PPC64 && !PPC_64K_PAGES
536 range 9 64 if PPC32 && PPC_16K_PAGES
537 default "9" if PPC32 && PPC_16K_PAGES
538 range 7 64 if PPC32 && PPC_64K_PAGES
539 default "7" if PPC32 && PPC_64K_PAGES
540 range 5 64 if PPC32 && PPC_256K_PAGES
541 default "5" if PPC32 && PPC_256K_PAGES
545 The kernel memory allocator divides physically contiguous memory
546 blocks into "zones", where each zone is a power of two number of
547 pages. This option selects the largest power of two that the kernel
548 keeps in the memory allocator. If you need to allocate very large
549 blocks of physically contiguous memory, then you may need to
552 This config option is actually maximum order plus one. For example,
553 a value of 11 means that the largest free memory block is 2^10 pages.
555 The page size is not necessarily 4KB. For example, on 64-bit
556 systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES. Keep
557 this in mind when choosing a value for this option.
559 config PPC_SUBPAGE_PROT
560 bool "Support setting protections for 4k subpages"
561 depends on PPC_STD_MMU_64 && PPC_64K_PAGES
563 This option adds support for a system call to allow user programs
564 to set access permissions (read/write, readonly, or no access)
565 on the 4k subpages of each 64k page.
568 bool "SMT (Hyperthreading) scheduler support"
569 depends on PPC64 && SMP
571 SMT scheduler support improves the CPU scheduler's decision making
572 when dealing with POWER5 cpus at a cost of slightly increased
573 overhead in some places. If unsure say N here.
575 config PPC_DENORMALISATION
576 bool "PowerPC denormalisation exception handling"
577 depends on PPC_BOOK3S_64
580 Add support for handling denormalisation of single precision
581 values. Useful for bare metal only. If unsure say Y here.
584 bool "Default bootloader kernel arguments"
587 string "Initial kernel command string"
588 depends on CMDLINE_BOOL
589 default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
591 On some platforms, there is currently no way for the boot loader to
592 pass arguments to the kernel. For these platforms, you can supply
593 some command-line options at build time by entering them here. In
594 most cases you will need to specify the root device here.
597 string "Additional default image types"
599 List additional targets to be built by the bootwrapper here (separated
600 by spaces). This is useful for targets that depend of device tree
601 files in the .dts directory.
603 Targets in this list will be build as part of the default build
604 target, or when the user does a 'make zImage' or a
605 'make zImage.initrd'.
607 If unsure, leave blank
609 config ARCH_WANTS_FREEZER_CONTROL
613 source kernel/power/Kconfig
616 bool "Enable seccomp to safely compute untrusted bytecode"
620 This kernel feature is useful for number crunching applications
621 that may need to compute untrusted bytecode during their
622 execution. By using pipes or other transports made available to
623 the process as file descriptors supporting the read/write
624 syscalls, it's possible to isolate those applications in
625 their own address space using seccomp. Once seccomp is
626 enabled via /proc/<pid>/seccomp, it cannot be disabled
627 and the task is only allowed to execute a few safe syscalls
628 defined by each seccomp mode.
630 If unsure, say Y. Only embedded should say N here.
641 bool "Support for ISA-bus hardware"
642 depends on PPC_PREP || PPC_CHRP
645 Find out whether you have ISA slots on your motherboard. ISA is the
646 name of a bus system, i.e. the way the CPU talks to the other stuff
647 inside your box. If you have an Apple machine, say N here; if you
648 have an IBM RS/6000 or pSeries machine or a PReP machine, say Y. If
649 you have an embedded board, consult your board documentation.
655 config NEED_DMA_MAP_STATE
656 def_bool (PPC64 || NOT_COHERENT_CACHE)
658 config NEED_SG_DMA_LENGTH
661 config GENERIC_ISA_DMA
663 depends on ISA_DMA_API
666 config PPC_INDIRECT_PCI
669 default y if 40x || 44x
680 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_PERMEDIA if !4xx && !CPM2 && !8xx
741 default PCI_QSPAN if !4xx && !CPM2 && 8xx
742 select ARCH_SUPPORTS_MSI
743 select GENERIC_PCI_IOMAP
745 Find out whether your system includes a PCI bus. PCI is the name of
746 a bus system, i.e. the way the CPU talks to the other stuff inside
747 your box. If you say Y here, the kernel will include drivers and
748 infrastructure code to support PCI bus devices.
758 depends on !4xx && !CPM2 && 8xx
761 Say Y here if you have a system based on a Motorola 8xx-series
762 embedded processor with a QSPAN PCI interface, otherwise say N.
766 depends on PCI && 8260
767 select PPC_INDIRECT_PCI
771 bool "Enable workaround for MPC826x erratum PCI 9"
772 depends on PCI_8260 && !8272
775 source "drivers/pci/pcie/Kconfig"
777 source "drivers/pci/Kconfig"
779 source "drivers/pcmcia/Kconfig"
781 source "drivers/pci/hotplug/Kconfig"
788 bool "RapidIO support"
789 depends on HAS_RAPIDIO || PCI
791 If you say Y here, the kernel will include drivers and
792 infrastructure code to support RapidIO interconnect devices.
795 bool "Freescale Embedded SRIO Controller support"
796 depends on RAPIDIO && HAS_RAPIDIO
799 Include support for RapidIO controller on Freescale embedded
800 processors (MPC8548, MPC8641, etc).
802 source "drivers/rapidio/Kconfig"
806 config NONSTATIC_KERNEL
810 menu "Advanced setup"
813 config ADVANCED_OPTIONS
814 bool "Prompt for advanced kernel configuration options"
816 This option will enable prompting for a variety of advanced kernel
817 configuration options. These options can cause the kernel to not
818 work if they are set incorrectly, but can be used to optimize certain
819 aspects of kernel memory management.
821 Unless you know what you are doing, say N here.
823 comment "Default settings for advanced configuration options are used"
824 depends on !ADVANCED_OPTIONS
826 config LOWMEM_SIZE_BOOL
827 bool "Set maximum low memory"
828 depends on ADVANCED_OPTIONS
830 This option allows you to set the maximum amount of memory which
831 will be used as "low memory", that is, memory which the kernel can
832 access directly, without having to set up a kernel virtual mapping.
833 This can be useful in optimizing the layout of kernel virtual
836 Say N here unless you know what you are doing.
839 hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
842 config LOWMEM_CAM_NUM_BOOL
843 bool "Set number of CAMs to use to map low memory"
844 depends on ADVANCED_OPTIONS && FSL_BOOKE
846 This option allows you to set the maximum number of CAM slots that
847 will be used to map low memory. There are a limited number of slots
848 available and even more limited number that will fit in the L1 MMU.
849 However, using more entries will allow mapping more low memory. This
850 can be useful in optimizing the layout of kernel virtual memory.
852 Say N here unless you know what you are doing.
854 config LOWMEM_CAM_NUM
856 int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL
859 config DYNAMIC_MEMSTART
860 bool "Enable page aligned dynamic load address for kernel (EXPERIMENTAL)"
861 depends on EXPERIMENTAL && ADVANCED_OPTIONS && FLATMEM && (FSL_BOOKE || 44x)
862 select NONSTATIC_KERNEL
864 This option enables the kernel to be loaded at any page aligned
865 physical address. The kernel creates a mapping from KERNELBASE to
866 the address where the kernel is loaded. The page size here implies
867 the TLB page size of the mapping for kernel on the particular platform.
868 Please refer to the init code for finding the TLB page size.
870 DYNAMIC_MEMSTART is an easy way of implementing pseudo-RELOCATABLE
871 kernel image, where the only restriction is the page aligned kernel
872 load address. When this option is enabled, the compile time physical
873 address CONFIG_PHYSICAL_START is ignored.
875 This option is overridden by CONFIG_RELOCATABLE
878 bool "Build a relocatable kernel (EXPERIMENTAL)"
879 depends on EXPERIMENTAL && ADVANCED_OPTIONS && FLATMEM && 44x
880 select NONSTATIC_KERNEL
882 This builds a kernel image that is capable of running at the
883 location the kernel is loaded at, without any alignment restrictions.
884 This feature is a superset of DYNAMIC_MEMSTART and hence overrides it.
886 One use is for the kexec on panic case where the recovery kernel
887 must live at a different physical address than the primary
890 Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address
891 it has been loaded at and the compile time physical addresses
892 CONFIG_PHYSICAL_START is ignored. However CONFIG_PHYSICAL_START
893 setting can still be useful to bootwrappers that need to know the
894 load address of the kernel (eg. u-boot/mkimage).
896 config RELOCATABLE_PPC32
898 depends on PPC32 && RELOCATABLE
900 config PAGE_OFFSET_BOOL
901 bool "Set custom page offset address"
902 depends on ADVANCED_OPTIONS
904 This option allows you to set the kernel virtual address at which
905 the kernel will map low memory. This can be useful in optimizing
906 the virtual memory layout of the system.
908 Say N here unless you know what you are doing.
911 hex "Virtual address of memory base" if PAGE_OFFSET_BOOL
914 config KERNEL_START_BOOL
915 bool "Set custom kernel base address"
916 depends on ADVANCED_OPTIONS
918 This option allows you to set the kernel virtual address at which
919 the kernel will be loaded. Normally this should match PAGE_OFFSET
920 however there are times (like kdump) that one might not want them
923 Say N here unless you know what you are doing.
926 hex "Virtual address of kernel base" if KERNEL_START_BOOL
927 default PAGE_OFFSET if PAGE_OFFSET_BOOL
928 default "0xc2000000" if CRASH_DUMP && !NONSTATIC_KERNEL
931 config PHYSICAL_START_BOOL
932 bool "Set physical address where the kernel is loaded"
933 depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE
935 This gives the physical address where the kernel is loaded.
937 Say N here unless you know what you are doing.
939 config PHYSICAL_START
940 hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL
941 default "0x02000000" if PPC_STD_MMU && CRASH_DUMP && !NONSTATIC_KERNEL
944 config PHYSICAL_ALIGN
946 default "0x04000000" if FSL_BOOKE
948 This value puts the alignment restrictions on physical address
949 where kernel is loaded and run from. Kernel is compiled for an
950 address which meets above alignment restriction.
952 config TASK_SIZE_BOOL
953 bool "Set custom user task size"
954 depends on ADVANCED_OPTIONS
956 This option allows you to set the amount of virtual address space
957 allocated to user tasks. This can be useful in optimizing the
958 virtual memory layout of the system.
960 Say N here unless you know what you are doing.
963 hex "Size of user task space" if TASK_SIZE_BOOL
964 default "0x80000000" if PPC_PREP || PPC_8xx
967 config CONSISTENT_SIZE_BOOL
968 bool "Set custom consistent memory pool size"
969 depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
971 This option allows you to set the size of the
972 consistent memory pool. This pool of virtual memory
973 is used to make consistent memory allocations.
975 config CONSISTENT_SIZE
976 hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
977 default "0x00200000" if NOT_COHERENT_CACHE
980 bool "Pinned Kernel TLBs (860 ONLY)"
981 depends on ADVANCED_OPTIONS && 8xx
986 bool "Build a relocatable kernel"
987 select NONSTATIC_KERNEL
989 This builds a kernel image that is capable of running anywhere
990 in the RMA (real memory area) at any 16k-aligned base address.
991 The kernel is linked as a position-independent executable (PIE)
992 and contains dynamic relocations which are processed early
993 in the bootup process.
995 One use is for the kexec on panic case where the recovery kernel
996 must live at a different physical address than the primary
1001 default "0xc000000000000000"
1004 default "0xc000000000000000"
1005 config PHYSICAL_START
1007 default "0x00000000"
1010 source "net/Kconfig"
1012 source "drivers/Kconfig"
1016 source "arch/powerpc/sysdev/qe_lib/Kconfig"
1018 source "lib/Kconfig"
1020 source "arch/powerpc/Kconfig.debug"
1022 source "security/Kconfig"
1026 depends on COMPAT && KEYS
1029 source "crypto/Kconfig"
1036 config PPC_LIB_RHEAP
1039 source "arch/powerpc/kvm/Kconfig"