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 ARCH_HAS_GCOV_PROFILE_ALL
130 select GENERIC_SMP_IDLE_THREAD
131 select GENERIC_CMOS_UPDATE
132 select GENERIC_TIME_VSYSCALL_OLD
133 select GENERIC_CLOCKEVENTS
134 select GENERIC_STRNCPY_FROM_USER
135 select GENERIC_STRNLEN_USER
136 select HAVE_MOD_ARCH_SPECIFIC
137 select MODULES_USE_ELF_RELA
138 select CLONE_BACKWARDS
139 select ARCH_USE_BUILTIN_BSWAP
140 select OLD_SIGSUSPEND
141 select OLD_SIGACTION if PPC32
142 select ARCH_SUPPORTS_ATOMIC_RMW
151 select COMPAT_BINFMT_ELF
152 select ARCH_WANT_OLD_COMPAT_IPC
153 select COMPAT_OLD_SIGACTION
155 config SYSVIPC_COMPAT
157 depends on COMPAT && SYSVIPC
160 # All PPC32s use generic nvram driver through ppc_md
165 config SCHED_OMIT_FRAME_POINTER
169 config ARCH_MAY_HAVE_PC_FDC
171 default !PPC_PSERIES || PCI
176 config PPC_UDBG_16550
180 config GENERIC_TBSYNC
182 default y if PPC32 && SMP
194 config SYS_SUPPORTS_APM_EMULATION
195 default y if PMAC_APM_EMU
201 Used to allow a board to specify it wants an ePAPR compliant wrapper.
204 config DEFAULT_UIMAGE
207 Used to allow a board to specify it wants a uImage built by default
213 config ARCH_HIBERNATION_POSSIBLE
217 config ARCH_SUSPEND_POSSIBLE
219 depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx || \
220 (PPC_85xx && !PPC_E500MC) || PPC_86xx || PPC_PSERIES \
223 config PPC_DCR_NATIVE
233 depends on PPC_DCR_NATIVE || PPC_DCR_MMIO
236 config PPC_OF_PLATFORM_PCI
239 depends on PPC64 # not supported on 32 bits yet
242 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
245 config ARCH_SUPPORTS_UPROBES
248 config PPC_ADV_DEBUG_REGS
250 depends on 40x || BOOKE
253 config PPC_ADV_DEBUG_IACS
255 depends on PPC_ADV_DEBUG_REGS
259 config PPC_ADV_DEBUG_DACS
261 depends on PPC_ADV_DEBUG_REGS
264 config PPC_ADV_DEBUG_DVCS
266 depends on PPC_ADV_DEBUG_REGS
270 config PPC_ADV_DEBUG_DAC_RANGE
272 depends on PPC_ADV_DEBUG_REGS && 44x
275 config PPC_EMULATE_SSTEP
277 default y if KPROBES || UPROBES || XMON || HAVE_HW_BREAKPOINT
279 source "init/Kconfig"
281 source "kernel/Kconfig.freezer"
283 source "arch/powerpc/sysdev/Kconfig"
284 source "arch/powerpc/platforms/Kconfig"
286 menu "Kernel options"
289 bool "High memory support"
292 source kernel/Kconfig.hz
293 source kernel/Kconfig.preempt
294 source "fs/Kconfig.binfmt"
296 config HUGETLB_PAGE_SIZE_VARIABLE
298 depends on HUGETLB_PAGE
301 config MATH_EMULATION
302 bool "Math emulation"
303 depends on 4xx || 8xx || E200 || PPC_MPC832x || E500
305 Some PowerPC chips designed for embedded applications do not have
306 a floating-point unit and therefore do not implement the
307 floating-point instructions in the PowerPC instruction set. If you
308 say Y here, the kernel will include code to emulate a floating-point
309 unit, which will allow programs that use floating-point
312 config PPC_TRANSACTIONAL_MEM
313 bool "Transactional Memory support for POWERPC"
314 depends on PPC_BOOK3S_64
318 Support user-mode Transactional Memory on POWERPC.
320 config 8XX_MINIMAL_FPEMU
321 bool "Minimal math emulation for 8xx"
322 depends on 8xx && !MATH_EMULATION
324 Older arch/ppc kernels still emulated a few floating point
325 instructions such as load and store, even when full math
326 emulation is disabled. Say "Y" here if you want to preserve
329 It is recommended that you build a soft-float userspace instead.
335 bool "SWIOTLB support"
339 Support for IO bounce buffering for systems without an IOMMU.
340 This allows us to DMA to the full physical address space on
341 platforms where the size of a physical address is larger
342 than the bus address. Not all platforms support this.
345 bool "Support for enabling/disabling CPUs"
346 depends on SMP && HOTPLUG && (PPC_PSERIES || \
347 PPC_PMAC || PPC_POWERNV || (PPC_85xx && !PPC_E500MC))
349 Say Y here to be able to disable and re-enable individual
350 CPUs at runtime on SMP machines.
352 Say N if you are unsure.
354 config ARCH_CPU_PROBE_RELEASE
356 depends on HOTPLUG_CPU
358 config ARCH_ENABLE_MEMORY_HOTPLUG
361 config ARCH_HAS_WALK_MEMORY
364 config ARCH_ENABLE_MEMORY_HOTREMOVE
368 bool "kexec system call"
369 depends on (PPC_BOOK3S || FSL_BOOKE || (44x && !SMP))
371 kexec is a system call that implements the ability to shutdown your
372 current kernel, and to start another kernel. It is like a reboot
373 but it is independent of the system firmware. And like a reboot
374 you can start any kernel with it, not just Linux.
376 The name comes from the similarity to the exec system call.
378 It is an ongoing process to be certain the hardware in a machine
379 is properly shutdown, so do not be surprised if this code does not
380 initially work for you. It may help to enable device hotplugging
381 support. As of this writing the exact hardware interface is
382 strongly in flux, so no good recommendation can be made.
385 bool "Build a kdump crash kernel"
386 depends on PPC64 || 6xx || FSL_BOOKE || (44x && !SMP)
387 select RELOCATABLE if PPC64 || 44x
388 select DYNAMIC_MEMSTART if FSL_BOOKE
390 Build a kernel suitable for use as a kdump capture kernel.
391 The same kernel binary can be used as production kernel and dump
395 bool "Firmware-assisted dump"
396 depends on PPC64 && PPC_RTAS && CRASH_DUMP
398 A robust mechanism to get reliable kernel crash dump with
399 assistance from firmware. This approach does not use kexec,
400 instead firmware assists in booting the kdump kernel
401 while preserving memory contents. Firmware-assisted dump
402 is meant to be a kdump replacement offering robustness and
403 speed not possible without system firmware assistance.
408 bool "Distribute interrupts on all CPUs by default"
409 depends on SMP && !MV64360
411 This option gives the kernel permission to distribute IRQs across
412 multiple CPUs. Saying N here will route all IRQs to the first
413 CPU. Generally saying Y is safe, although some problems have been
414 reported with SMP Power Macintoshes with this option enabled.
419 default y if SMP && PPC_PSERIES
425 depends on NEED_MULTIPLE_NODES
427 config ARCH_SELECT_MEMORY_MODEL
431 config ARCH_FLATMEM_ENABLE
433 depends on (PPC64 && !NUMA) || PPC32
435 config ARCH_SPARSEMEM_ENABLE
438 select SPARSEMEM_VMEMMAP_ENABLE
440 config ARCH_SPARSEMEM_DEFAULT
442 depends on (SMP && PPC_PSERIES) || PPC_PS3
444 config SYS_SUPPORTS_HUGETLBFS
449 config ARCH_MEMORY_PROBE
451 depends on MEMORY_HOTPLUG
453 # Some NUMA nodes have memory ranges that span
454 # other nodes. Even though a pfn is valid and
455 # between a node's start and end pfns, it may not
456 # reside on that node. See memmap_init_zone()
458 config NODES_SPAN_OTHER_NODES
460 depends on NEED_MULTIPLE_NODES
462 config PPC_HAS_HASH_64K
468 bool "Using standard binutils settings"
472 Turning this option off allows you to select 256KB PAGE_SIZE on 44x.
473 Note, that kernel will be able to run only those applications,
474 which had been compiled using binutils later than 2.17.50.0.3 with
475 '-zmax-page-size' set to 256K (the default is 64K). Or, if using
476 the older binutils, you can patch them with a trivial patch, which
477 changes the ELF_MAXPAGESIZE definition from 0x10000 to 0x40000.
483 Select the kernel logical page size. Increasing the page size
484 will reduce software overhead at each page boundary, allow
485 hardware prefetch mechanisms to be more effective, and allow
486 larger dma transfers increasing IO efficiency and reducing
487 overhead. However the utilization of memory will increase.
488 For example, each cached file will using a multiple of the
489 page size to hold its contents and the difference between the
490 end of file and the end of page is wasted.
492 Some dedicated systems, such as software raid serving with
493 accelerated calculations, have shown significant increases.
495 If you configure a 64 bit kernel for 64k pages but the
496 processor does not support them, then the kernel will simulate
497 them with 4k pages, loading them on demand, but with the
498 reduced software overhead and larger internal fragmentation.
499 For the 32 bit kernel, a large page option will not be offered
500 unless it is supported by the configured processor.
502 If unsure, choose 4K_PAGES.
508 bool "16k page size" if 44x
511 bool "64k page size" if 44x || PPC_STD_MMU_64 || PPC_BOOK3E_64
512 select PPC_HAS_HASH_64K if PPC_STD_MMU_64
514 config PPC_256K_PAGES
515 bool "256k page size" if 44x
516 depends on !STDBINUTILS
518 Make the page size 256k.
520 As the ELF standard only requires alignment to support page
521 sizes up to 64k, you will need to compile all of your user
522 space applications with a non-standard binutils settings
523 (see the STDBINUTILS description for details).
525 Say N unless you know what you are doing.
529 config FORCE_MAX_ZONEORDER
530 int "Maximum zone order"
531 range 9 64 if PPC64 && PPC_64K_PAGES
532 default "9" if PPC64 && PPC_64K_PAGES
533 range 13 64 if PPC64 && !PPC_64K_PAGES
534 default "13" if PPC64 && !PPC_64K_PAGES
535 range 9 64 if PPC32 && PPC_16K_PAGES
536 default "9" if PPC32 && PPC_16K_PAGES
537 range 7 64 if PPC32 && PPC_64K_PAGES
538 default "7" if PPC32 && PPC_64K_PAGES
539 range 5 64 if PPC32 && PPC_256K_PAGES
540 default "5" if PPC32 && PPC_256K_PAGES
544 The kernel memory allocator divides physically contiguous memory
545 blocks into "zones", where each zone is a power of two number of
546 pages. This option selects the largest power of two that the kernel
547 keeps in the memory allocator. If you need to allocate very large
548 blocks of physically contiguous memory, then you may need to
551 This config option is actually maximum order plus one. For example,
552 a value of 11 means that the largest free memory block is 2^10 pages.
554 The page size is not necessarily 4KB. For example, on 64-bit
555 systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES. Keep
556 this in mind when choosing a value for this option.
558 config PPC_SUBPAGE_PROT
559 bool "Support setting protections for 4k subpages"
560 depends on PPC_STD_MMU_64 && PPC_64K_PAGES
562 This option adds support for a system call to allow user programs
563 to set access permissions (read/write, readonly, or no access)
564 on the 4k subpages of each 64k page.
567 bool "SMT (Hyperthreading) scheduler support"
568 depends on PPC64 && SMP
570 SMT scheduler support improves the CPU scheduler's decision making
571 when dealing with POWER5 cpus at a cost of slightly increased
572 overhead in some places. If unsure say N here.
574 config PPC_DENORMALISATION
575 bool "PowerPC denormalisation exception handling"
576 depends on PPC_BOOK3S_64
577 default "y" if PPC_POWERNV
579 Add support for handling denormalisation of single precision
580 values. Useful for bare metal only. If unsure say Y here.
583 bool "Default bootloader kernel arguments"
586 string "Initial kernel command string"
587 depends on CMDLINE_BOOL
588 default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
590 On some platforms, there is currently no way for the boot loader to
591 pass arguments to the kernel. For these platforms, you can supply
592 some command-line options at build time by entering them here. In
593 most cases you will need to specify the root device here.
596 string "Additional default image types"
598 List additional targets to be built by the bootwrapper here (separated
599 by spaces). This is useful for targets that depend of device tree
600 files in the .dts directory.
602 Targets in this list will be build as part of the default build
603 target, or when the user does a 'make zImage' or a
604 'make zImage.initrd'.
606 If unsure, leave blank
608 config ARCH_WANTS_FREEZER_CONTROL
612 source kernel/power/Kconfig
615 bool "Enable seccomp to safely compute untrusted bytecode"
619 This kernel feature is useful for number crunching applications
620 that may need to compute untrusted bytecode during their
621 execution. By using pipes or other transports made available to
622 the process as file descriptors supporting the read/write
623 syscalls, it's possible to isolate those applications in
624 their own address space using seccomp. Once seccomp is
625 enabled via /proc/<pid>/seccomp, it cannot be disabled
626 and the task is only allowed to execute a few safe syscalls
627 defined by each seccomp mode.
629 If unsure, say Y. Only embedded should say N here.
640 bool "Support for ISA-bus hardware"
644 Find out whether you have ISA slots on your motherboard. ISA is the
645 name of a bus system, i.e. the way the CPU talks to the other stuff
646 inside your box. If you have an Apple machine, say N here; if you
647 have an IBM RS/6000 or pSeries machine, say Y. If you have an
648 embedded board, consult your board documentation.
654 config NEED_DMA_MAP_STATE
655 def_bool (PPC64 || NOT_COHERENT_CACHE)
657 config NEED_SG_DMA_LENGTH
660 config GENERIC_ISA_DMA
662 depends on ISA_DMA_API
665 config PPC_INDIRECT_PCI
668 default y if 40x || 44x
679 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_QSPAN if !4xx && !CPM2 && 8xx
739 select ARCH_SUPPORTS_MSI
740 select GENERIC_PCI_IOMAP
742 Find out whether your system includes a PCI bus. PCI is the name of
743 a bus system, i.e. the way the CPU talks to the other stuff inside
744 your box. If you say Y here, the kernel will include drivers and
745 infrastructure code to support PCI bus devices.
755 depends on !4xx && !CPM2 && 8xx
758 Say Y here if you have a system based on a Motorola 8xx-series
759 embedded processor with a QSPAN PCI interface, otherwise say N.
763 depends on PCI && 8260
764 select PPC_INDIRECT_PCI
767 source "drivers/pci/pcie/Kconfig"
769 source "drivers/pci/Kconfig"
771 source "drivers/pcmcia/Kconfig"
773 source "drivers/pci/hotplug/Kconfig"
780 bool "RapidIO support"
781 depends on HAS_RAPIDIO || PCI
783 If you say Y here, the kernel will include drivers and
784 infrastructure code to support RapidIO interconnect devices.
787 bool "Freescale Embedded SRIO Controller support"
788 depends on RAPIDIO && HAS_RAPIDIO
791 Include support for RapidIO controller on Freescale embedded
792 processors (MPC8548, MPC8641, etc).
794 source "drivers/rapidio/Kconfig"
798 config NONSTATIC_KERNEL
802 menu "Advanced setup"
805 config ADVANCED_OPTIONS
806 bool "Prompt for advanced kernel configuration options"
808 This option will enable prompting for a variety of advanced kernel
809 configuration options. These options can cause the kernel to not
810 work if they are set incorrectly, but can be used to optimize certain
811 aspects of kernel memory management.
813 Unless you know what you are doing, say N here.
815 comment "Default settings for advanced configuration options are used"
816 depends on !ADVANCED_OPTIONS
818 config LOWMEM_SIZE_BOOL
819 bool "Set maximum low memory"
820 depends on ADVANCED_OPTIONS
822 This option allows you to set the maximum amount of memory which
823 will be used as "low memory", that is, memory which the kernel can
824 access directly, without having to set up a kernel virtual mapping.
825 This can be useful in optimizing the layout of kernel virtual
828 Say N here unless you know what you are doing.
831 hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
834 config LOWMEM_CAM_NUM_BOOL
835 bool "Set number of CAMs to use to map low memory"
836 depends on ADVANCED_OPTIONS && FSL_BOOKE
838 This option allows you to set the maximum number of CAM slots that
839 will be used to map low memory. There are a limited number of slots
840 available and even more limited number that will fit in the L1 MMU.
841 However, using more entries will allow mapping more low memory. This
842 can be useful in optimizing the layout of kernel virtual memory.
844 Say N here unless you know what you are doing.
846 config LOWMEM_CAM_NUM
848 int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL
851 config DYNAMIC_MEMSTART
852 bool "Enable page aligned dynamic load address for kernel"
853 depends on ADVANCED_OPTIONS && FLATMEM && (FSL_BOOKE || 44x)
854 select NONSTATIC_KERNEL
856 This option enables the kernel to be loaded at any page aligned
857 physical address. The kernel creates a mapping from KERNELBASE to
858 the address where the kernel is loaded. The page size here implies
859 the TLB page size of the mapping for kernel on the particular platform.
860 Please refer to the init code for finding the TLB page size.
862 DYNAMIC_MEMSTART is an easy way of implementing pseudo-RELOCATABLE
863 kernel image, where the only restriction is the page aligned kernel
864 load address. When this option is enabled, the compile time physical
865 address CONFIG_PHYSICAL_START is ignored.
867 This option is overridden by CONFIG_RELOCATABLE
870 bool "Build a relocatable kernel"
871 depends on ADVANCED_OPTIONS && FLATMEM && 44x
872 select NONSTATIC_KERNEL
874 This builds a kernel image that is capable of running at the
875 location the kernel is loaded at, without any alignment restrictions.
876 This feature is a superset of DYNAMIC_MEMSTART and hence overrides it.
878 One use is for the kexec on panic case where the recovery kernel
879 must live at a different physical address than the primary
882 Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address
883 it has been loaded at and the compile time physical addresses
884 CONFIG_PHYSICAL_START is ignored. However CONFIG_PHYSICAL_START
885 setting can still be useful to bootwrappers that need to know the
886 load address of the kernel (eg. u-boot/mkimage).
888 config RELOCATABLE_PPC32
890 depends on PPC32 && RELOCATABLE
892 config PAGE_OFFSET_BOOL
893 bool "Set custom page offset address"
894 depends on ADVANCED_OPTIONS
896 This option allows you to set the kernel virtual address at which
897 the kernel will map low memory. This can be useful in optimizing
898 the virtual memory layout of the system.
900 Say N here unless you know what you are doing.
903 hex "Virtual address of memory base" if PAGE_OFFSET_BOOL
906 config KERNEL_START_BOOL
907 bool "Set custom kernel base address"
908 depends on ADVANCED_OPTIONS
910 This option allows you to set the kernel virtual address at which
911 the kernel will be loaded. Normally this should match PAGE_OFFSET
912 however there are times (like kdump) that one might not want them
915 Say N here unless you know what you are doing.
918 hex "Virtual address of kernel base" if KERNEL_START_BOOL
919 default PAGE_OFFSET if PAGE_OFFSET_BOOL
920 default "0xc2000000" if CRASH_DUMP && !NONSTATIC_KERNEL
923 config PHYSICAL_START_BOOL
924 bool "Set physical address where the kernel is loaded"
925 depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE
927 This gives the physical address where the kernel is loaded.
929 Say N here unless you know what you are doing.
931 config PHYSICAL_START
932 hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL
933 default "0x02000000" if PPC_STD_MMU && CRASH_DUMP && !NONSTATIC_KERNEL
936 config PHYSICAL_ALIGN
938 default "0x04000000" if FSL_BOOKE
940 This value puts the alignment restrictions on physical address
941 where kernel is loaded and run from. Kernel is compiled for an
942 address which meets above alignment restriction.
944 config TASK_SIZE_BOOL
945 bool "Set custom user task size"
946 depends on ADVANCED_OPTIONS
948 This option allows you to set the amount of virtual address space
949 allocated to user tasks. This can be useful in optimizing the
950 virtual memory layout of the system.
952 Say N here unless you know what you are doing.
955 hex "Size of user task space" if TASK_SIZE_BOOL
956 default "0x80000000" if PPC_8xx
959 config CONSISTENT_SIZE_BOOL
960 bool "Set custom consistent memory pool size"
961 depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
963 This option allows you to set the size of the
964 consistent memory pool. This pool of virtual memory
965 is used to make consistent memory allocations.
967 config CONSISTENT_SIZE
968 hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
969 default "0x00200000" if NOT_COHERENT_CACHE
972 bool "Pinned Kernel TLBs (860 ONLY)"
973 depends on ADVANCED_OPTIONS && 8xx
978 bool "Build a relocatable kernel"
979 select NONSTATIC_KERNEL
981 This builds a kernel image that is capable of running anywhere
982 in the RMA (real memory area) at any 16k-aligned base address.
983 The kernel is linked as a position-independent executable (PIE)
984 and contains dynamic relocations which are processed early
985 in the bootup process.
987 One use is for the kexec on panic case where the recovery kernel
988 must live at a different physical address than the primary
991 # This value must have zeroes in the bottom 60 bits otherwise lots will break
994 default "0xc000000000000000"
997 default "0xc000000000000000"
998 config PHYSICAL_START
1000 default "0x00000000"
1003 source "net/Kconfig"
1005 source "drivers/Kconfig"
1009 source "arch/powerpc/sysdev/qe_lib/Kconfig"
1011 source "lib/Kconfig"
1013 source "arch/powerpc/Kconfig.debug"
1015 source "security/Kconfig"
1019 depends on COMPAT && KEYS
1022 source "crypto/Kconfig"
1029 config PPC_LIB_RHEAP
1032 source "arch/powerpc/kvm/Kconfig"