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
95 select OF_EARLY_FLATTREE
96 select HAVE_FTRACE_MCOUNT_RECORD
97 select HAVE_DYNAMIC_FTRACE
98 select HAVE_FUNCTION_TRACER
99 select HAVE_FUNCTION_GRAPH_TRACER
100 select SYSCTL_EXCEPTION_TRACE
101 select ARCH_WANT_OPTIONAL_GPIOLIB
102 select VIRT_TO_BUS if !PPC64
104 select HAVE_IOREMAP_PROT
105 select HAVE_EFFICIENT_UNALIGNED_ACCESS
107 select HAVE_ARCH_KGDB
108 select HAVE_KRETPROBES
109 select HAVE_ARCH_TRACEHOOK
111 select HAVE_MEMBLOCK_NODE_MAP
112 select HAVE_DMA_ATTRS
113 select HAVE_DMA_API_DEBUG
114 select USE_GENERIC_SMP_HELPERS if SMP
116 select HAVE_DEBUG_KMEMLEAK
117 select GENERIC_ATOMIC64 if PPC32
118 select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
119 select HAVE_PERF_EVENTS
120 select HAVE_REGS_AND_STACK_ACCESS_API
121 select HAVE_HW_BREAKPOINT if PERF_EVENTS && PPC_BOOK3S_64
122 select HAVE_GENERIC_HARDIRQS
123 select ARCH_WANT_IPC_PARSE_VERSION
126 select GENERIC_IRQ_SHOW
127 select GENERIC_IRQ_SHOW_LEVEL
128 select IRQ_FORCED_THREADING
129 select HAVE_RCU_TABLE_FREE if SMP
130 select HAVE_SYSCALL_TRACEPOINTS
131 select HAVE_BPF_JIT if PPC64
132 select HAVE_ARCH_JUMP_LABEL
133 select ARCH_HAVE_NMI_SAFE_CMPXCHG
134 select GENERIC_SMP_IDLE_THREAD
135 select GENERIC_CMOS_UPDATE
136 select GENERIC_TIME_VSYSCALL_OLD
137 select GENERIC_CLOCKEVENTS
138 select GENERIC_STRNCPY_FROM_USER
139 select GENERIC_STRNLEN_USER
140 select HAVE_MOD_ARCH_SPECIFIC
141 select MODULES_USE_ELF_RELA
142 select CLONE_BACKWARDS
143 select ARCH_USE_BUILTIN_BSWAP
144 select OLD_SIGSUSPEND
145 select OLD_SIGACTION if PPC32
154 select COMPAT_BINFMT_ELF
155 select ARCH_WANT_OLD_COMPAT_IPC
156 select COMPAT_OLD_SIGACTION
158 config SYSVIPC_COMPAT
160 depends on COMPAT && SYSVIPC
163 # All PPC32s use generic nvram driver through ppc_md
168 config SCHED_OMIT_FRAME_POINTER
172 config ARCH_MAY_HAVE_PC_FDC
174 default !PPC_PSERIES || PCI
179 config PPC_UDBG_16550
183 config GENERIC_TBSYNC
185 default y if PPC32 && SMP
197 config SYS_SUPPORTS_APM_EMULATION
198 default y if PMAC_APM_EMU
204 Used to allow a board to specify it wants an ePAPR compliant wrapper.
207 config DEFAULT_UIMAGE
210 Used to allow a board to specify it wants a uImage built by default
216 config ARCH_HIBERNATION_POSSIBLE
220 config ARCH_SUSPEND_POSSIBLE
222 depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx || \
223 (PPC_85xx && !PPC_E500MC) || PPC_86xx || PPC_PSERIES \
226 config PPC_DCR_NATIVE
236 depends on PPC_DCR_NATIVE || PPC_DCR_MMIO
239 config PPC_OF_PLATFORM_PCI
242 depends on PPC64 # not supported on 32 bits yet
245 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
248 config ARCH_SUPPORTS_UPROBES
251 config PPC_ADV_DEBUG_REGS
253 depends on 40x || BOOKE
256 config PPC_ADV_DEBUG_IACS
258 depends on PPC_ADV_DEBUG_REGS
262 config PPC_ADV_DEBUG_DACS
264 depends on PPC_ADV_DEBUG_REGS
267 config PPC_ADV_DEBUG_DVCS
269 depends on PPC_ADV_DEBUG_REGS
273 config PPC_ADV_DEBUG_DAC_RANGE
275 depends on PPC_ADV_DEBUG_REGS && 44x
278 config PPC_EMULATE_SSTEP
280 default y if KPROBES || UPROBES || XMON || HAVE_HW_BREAKPOINT
282 source "init/Kconfig"
284 source "kernel/Kconfig.freezer"
286 source "arch/powerpc/sysdev/Kconfig"
287 source "arch/powerpc/platforms/Kconfig"
289 menu "Kernel options"
292 bool "High memory support"
295 source kernel/Kconfig.hz
296 source kernel/Kconfig.preempt
297 source "fs/Kconfig.binfmt"
299 config HUGETLB_PAGE_SIZE_VARIABLE
301 depends on HUGETLB_PAGE
304 config MATH_EMULATION
305 bool "Math emulation"
306 depends on 4xx || 8xx || E200 || PPC_MPC832x || E500
308 Some PowerPC chips designed for embedded applications do not have
309 a floating-point unit and therefore do not implement the
310 floating-point instructions in the PowerPC instruction set. If you
311 say Y here, the kernel will include code to emulate a floating-point
312 unit, which will allow programs that use floating-point
315 config PPC_TRANSACTIONAL_MEM
316 bool "Transactional Memory support for POWERPC"
317 depends on PPC_BOOK3S_64
321 Support user-mode Transactional Memory on POWERPC.
323 config 8XX_MINIMAL_FPEMU
324 bool "Minimal math emulation for 8xx"
325 depends on 8xx && !MATH_EMULATION
327 Older arch/ppc kernels still emulated a few floating point
328 instructions such as load and store, even when full math
329 emulation is disabled. Say "Y" here if you want to preserve
332 It is recommended that you build a soft-float userspace instead.
338 bool "SWIOTLB support"
342 Support for IO bounce buffering for systems without an IOMMU.
343 This allows us to DMA to the full physical address space on
344 platforms where the size of a physical address is larger
345 than the bus address. Not all platforms support this.
348 bool "Support for enabling/disabling CPUs"
349 depends on SMP && HOTPLUG && (PPC_PSERIES || \
350 PPC_PMAC || PPC_POWERNV || (PPC_85xx && !PPC_E500MC))
352 Say Y here to be able to disable and re-enable individual
353 CPUs at runtime on SMP machines.
355 Say N if you are unsure.
357 config ARCH_CPU_PROBE_RELEASE
359 depends on HOTPLUG_CPU
361 config ARCH_ENABLE_MEMORY_HOTPLUG
364 config ARCH_HAS_WALK_MEMORY
367 config ARCH_ENABLE_MEMORY_HOTREMOVE
371 bool "kexec system call"
372 depends on (PPC_BOOK3S || FSL_BOOKE || (44x && !SMP))
374 kexec is a system call that implements the ability to shutdown your
375 current kernel, and to start another kernel. It is like a reboot
376 but it is independent of the system firmware. And like a reboot
377 you can start any kernel with it, not just Linux.
379 The name comes from the similarity to the exec system call.
381 It is an ongoing process to be certain the hardware in a machine
382 is properly shutdown, so do not be surprised if this code does not
383 initially work for you. It may help to enable device hotplugging
384 support. As of this writing the exact hardware interface is
385 strongly in flux, so no good recommendation can be made.
388 bool "Build a kdump crash kernel"
389 depends on PPC64 || 6xx || FSL_BOOKE || (44x && !SMP)
390 select RELOCATABLE if PPC64 || 44x
391 select DYNAMIC_MEMSTART if FSL_BOOKE
393 Build a kernel suitable for use as a kdump capture kernel.
394 The same kernel binary can be used as production kernel and dump
398 bool "Firmware-assisted dump"
399 depends on PPC64 && PPC_RTAS && CRASH_DUMP
401 A robust mechanism to get reliable kernel crash dump with
402 assistance from firmware. This approach does not use kexec,
403 instead firmware assists in booting the kdump kernel
404 while preserving memory contents. Firmware-assisted dump
405 is meant to be a kdump replacement offering robustness and
406 speed not possible without system firmware assistance.
411 bool "Distribute interrupts on all CPUs by default"
412 depends on SMP && !MV64360
414 This option gives the kernel permission to distribute IRQs across
415 multiple CPUs. Saying N here will route all IRQs to the first
416 CPU. Generally saying Y is safe, although some problems have been
417 reported with SMP Power Macintoshes with this option enabled.
422 default y if SMP && PPC_PSERIES
428 depends on NEED_MULTIPLE_NODES
430 config MAX_ACTIVE_REGIONS
432 default "256" if PPC64
435 config ARCH_SELECT_MEMORY_MODEL
439 config ARCH_FLATMEM_ENABLE
441 depends on (PPC64 && !NUMA) || PPC32
443 config ARCH_SPARSEMEM_ENABLE
446 select SPARSEMEM_VMEMMAP_ENABLE
448 config ARCH_SPARSEMEM_DEFAULT
450 depends on (SMP && PPC_PSERIES) || PPC_PS3
452 config SYS_SUPPORTS_HUGETLBFS
457 config ARCH_MEMORY_PROBE
459 depends on MEMORY_HOTPLUG
461 # Some NUMA nodes have memory ranges that span
462 # other nodes. Even though a pfn is valid and
463 # between a node's start and end pfns, it may not
464 # reside on that node. See memmap_init_zone()
466 config NODES_SPAN_OTHER_NODES
468 depends on NEED_MULTIPLE_NODES
470 config PPC_HAS_HASH_64K
476 bool "Using standard binutils settings"
480 Turning this option off allows you to select 256KB PAGE_SIZE on 44x.
481 Note, that kernel will be able to run only those applications,
482 which had been compiled using binutils later than 2.17.50.0.3 with
483 '-zmax-page-size' set to 256K (the default is 64K). Or, if using
484 the older binutils, you can patch them with a trivial patch, which
485 changes the ELF_MAXPAGESIZE definition from 0x10000 to 0x40000.
491 Select the kernel logical page size. Increasing the page size
492 will reduce software overhead at each page boundary, allow
493 hardware prefetch mechanisms to be more effective, and allow
494 larger dma transfers increasing IO efficiency and reducing
495 overhead. However the utilization of memory will increase.
496 For example, each cached file will using a multiple of the
497 page size to hold its contents and the difference between the
498 end of file and the end of page is wasted.
500 Some dedicated systems, such as software raid serving with
501 accelerated calculations, have shown significant increases.
503 If you configure a 64 bit kernel for 64k pages but the
504 processor does not support them, then the kernel will simulate
505 them with 4k pages, loading them on demand, but with the
506 reduced software overhead and larger internal fragmentation.
507 For the 32 bit kernel, a large page option will not be offered
508 unless it is supported by the configured processor.
510 If unsure, choose 4K_PAGES.
516 bool "16k page size" if 44x
519 bool "64k page size" if 44x || PPC_STD_MMU_64 || PPC_BOOK3E_64
520 select PPC_HAS_HASH_64K if PPC_STD_MMU_64
522 config PPC_256K_PAGES
523 bool "256k page size" if 44x
524 depends on !STDBINUTILS
526 Make the page size 256k.
528 As the ELF standard only requires alignment to support page
529 sizes up to 64k, you will need to compile all of your user
530 space applications with a non-standard binutils settings
531 (see the STDBINUTILS description for details).
533 Say N unless you know what you are doing.
537 config FORCE_MAX_ZONEORDER
538 int "Maximum zone order"
539 range 9 64 if PPC64 && PPC_64K_PAGES
540 default "9" if PPC64 && PPC_64K_PAGES
541 range 13 64 if PPC64 && !PPC_64K_PAGES
542 default "13" if PPC64 && !PPC_64K_PAGES
543 range 9 64 if PPC32 && PPC_16K_PAGES
544 default "9" if PPC32 && PPC_16K_PAGES
545 range 7 64 if PPC32 && PPC_64K_PAGES
546 default "7" if PPC32 && PPC_64K_PAGES
547 range 5 64 if PPC32 && PPC_256K_PAGES
548 default "5" if PPC32 && PPC_256K_PAGES
552 The kernel memory allocator divides physically contiguous memory
553 blocks into "zones", where each zone is a power of two number of
554 pages. This option selects the largest power of two that the kernel
555 keeps in the memory allocator. If you need to allocate very large
556 blocks of physically contiguous memory, then you may need to
559 This config option is actually maximum order plus one. For example,
560 a value of 11 means that the largest free memory block is 2^10 pages.
562 The page size is not necessarily 4KB. For example, on 64-bit
563 systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES. Keep
564 this in mind when choosing a value for this option.
566 config PPC_SUBPAGE_PROT
567 bool "Support setting protections for 4k subpages"
568 depends on PPC_STD_MMU_64 && PPC_64K_PAGES
570 This option adds support for a system call to allow user programs
571 to set access permissions (read/write, readonly, or no access)
572 on the 4k subpages of each 64k page.
575 bool "SMT (Hyperthreading) scheduler support"
576 depends on PPC64 && SMP
578 SMT scheduler support improves the CPU scheduler's decision making
579 when dealing with POWER5 cpus at a cost of slightly increased
580 overhead in some places. If unsure say N here.
582 config PPC_DENORMALISATION
583 bool "PowerPC denormalisation exception handling"
584 depends on PPC_BOOK3S_64
587 Add support for handling denormalisation of single precision
588 values. Useful for bare metal only. If unsure say Y here.
591 bool "Default bootloader kernel arguments"
594 string "Initial kernel command string"
595 depends on CMDLINE_BOOL
596 default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
598 On some platforms, there is currently no way for the boot loader to
599 pass arguments to the kernel. For these platforms, you can supply
600 some command-line options at build time by entering them here. In
601 most cases you will need to specify the root device here.
604 string "Additional default image types"
606 List additional targets to be built by the bootwrapper here (separated
607 by spaces). This is useful for targets that depend of device tree
608 files in the .dts directory.
610 Targets in this list will be build as part of the default build
611 target, or when the user does a 'make zImage' or a
612 'make zImage.initrd'.
614 If unsure, leave blank
616 config ARCH_WANTS_FREEZER_CONTROL
620 source kernel/power/Kconfig
623 bool "Enable seccomp to safely compute untrusted bytecode"
627 This kernel feature is useful for number crunching applications
628 that may need to compute untrusted bytecode during their
629 execution. By using pipes or other transports made available to
630 the process as file descriptors supporting the read/write
631 syscalls, it's possible to isolate those applications in
632 their own address space using seccomp. Once seccomp is
633 enabled via /proc/<pid>/seccomp, it cannot be disabled
634 and the task is only allowed to execute a few safe syscalls
635 defined by each seccomp mode.
637 If unsure, say Y. Only embedded should say N here.
648 bool "Support for ISA-bus hardware"
649 depends on PPC_PREP || PPC_CHRP
652 Find out whether you have ISA slots on your motherboard. ISA is the
653 name of a bus system, i.e. the way the CPU talks to the other stuff
654 inside your box. If you have an Apple machine, say N here; if you
655 have an IBM RS/6000 or pSeries machine or a PReP machine, say Y. If
656 you have an embedded board, consult your board documentation.
662 config NEED_DMA_MAP_STATE
663 def_bool (PPC64 || NOT_COHERENT_CACHE)
665 config NEED_SG_DMA_LENGTH
668 config GENERIC_ISA_DMA
670 depends on ISA_DMA_API
673 config PPC_INDIRECT_PCI
676 default y if 40x || 44x
687 select HAVE_CAN_FLEXCAN if NET && CAN
691 select PPC_INDIRECT_PCI
697 depends on SUSPEND && (PPC_85xx || PPC_86xx)
699 Freescale MPC85xx/MPC86xx power management controller support
700 (suspend/resume). For MPC83xx see platforms/83xx/suspend.c
705 depends on SUSPEND && (44x || 40x)
707 PPC4xx Clock Power Management (CPM) support (suspend/resume).
708 It also enables support for two different idle states (idle-wait
715 bool "Freescale Local Bus support"
718 Enables reporting of errors from the Freescale local bus
719 controller. Also contains some common code used by
720 drivers for specific local bus peripherals.
728 depends on PPC_83xx || QUICC_ENGINE || CPM2
730 Freescale General-purpose Timers support
732 # Yes MCA RS/6000s exist but Linux-PPC does not currently support any
736 # Platforms that what PCI turned unconditionally just do select PCI
737 # in their config node. Platforms that want to choose at config
738 # time should select PPC_PCI_CHOICE
739 config PPC_PCI_CHOICE
743 bool "PCI support" if PPC_PCI_CHOICE
744 default y if !40x && !CPM2 && !8xx && !PPC_83xx \
745 && !PPC_85xx && !PPC_86xx && !GAMECUBE_COMMON
746 default PCI_PERMEDIA if !4xx && !CPM2 && !8xx
747 default PCI_QSPAN if !4xx && !CPM2 && 8xx
748 select ARCH_SUPPORTS_MSI
749 select GENERIC_PCI_IOMAP
751 Find out whether your system includes a PCI bus. PCI is the name of
752 a bus system, i.e. the way the CPU talks to the other stuff inside
753 your box. If you say Y here, the kernel will include drivers and
754 infrastructure code to support PCI bus devices.
764 depends on !4xx && !CPM2 && 8xx
767 Say Y here if you have a system based on a Motorola 8xx-series
768 embedded processor with a QSPAN PCI interface, otherwise say N.
772 depends on PCI && 8260
773 select PPC_INDIRECT_PCI
776 source "drivers/pci/pcie/Kconfig"
778 source "drivers/pci/Kconfig"
780 source "drivers/pcmcia/Kconfig"
782 source "drivers/pci/hotplug/Kconfig"
789 bool "RapidIO support"
790 depends on HAS_RAPIDIO || PCI
792 If you say Y here, the kernel will include drivers and
793 infrastructure code to support RapidIO interconnect devices.
796 bool "Freescale Embedded SRIO Controller support"
797 depends on RAPIDIO && HAS_RAPIDIO
800 Include support for RapidIO controller on Freescale embedded
801 processors (MPC8548, MPC8641, etc).
803 source "drivers/rapidio/Kconfig"
807 config NONSTATIC_KERNEL
811 menu "Advanced setup"
814 config ADVANCED_OPTIONS
815 bool "Prompt for advanced kernel configuration options"
817 This option will enable prompting for a variety of advanced kernel
818 configuration options. These options can cause the kernel to not
819 work if they are set incorrectly, but can be used to optimize certain
820 aspects of kernel memory management.
822 Unless you know what you are doing, say N here.
824 comment "Default settings for advanced configuration options are used"
825 depends on !ADVANCED_OPTIONS
827 config LOWMEM_SIZE_BOOL
828 bool "Set maximum low memory"
829 depends on ADVANCED_OPTIONS
831 This option allows you to set the maximum amount of memory which
832 will be used as "low memory", that is, memory which the kernel can
833 access directly, without having to set up a kernel virtual mapping.
834 This can be useful in optimizing the layout of kernel virtual
837 Say N here unless you know what you are doing.
840 hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
843 config LOWMEM_CAM_NUM_BOOL
844 bool "Set number of CAMs to use to map low memory"
845 depends on ADVANCED_OPTIONS && FSL_BOOKE
847 This option allows you to set the maximum number of CAM slots that
848 will be used to map low memory. There are a limited number of slots
849 available and even more limited number that will fit in the L1 MMU.
850 However, using more entries will allow mapping more low memory. This
851 can be useful in optimizing the layout of kernel virtual memory.
853 Say N here unless you know what you are doing.
855 config LOWMEM_CAM_NUM
857 int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL
860 config DYNAMIC_MEMSTART
861 bool "Enable page aligned dynamic load address for kernel"
862 depends on ADVANCED_OPTIONS && FLATMEM && (FSL_BOOKE || 44x)
863 select NONSTATIC_KERNEL
865 This option enables the kernel to be loaded at any page aligned
866 physical address. The kernel creates a mapping from KERNELBASE to
867 the address where the kernel is loaded. The page size here implies
868 the TLB page size of the mapping for kernel on the particular platform.
869 Please refer to the init code for finding the TLB page size.
871 DYNAMIC_MEMSTART is an easy way of implementing pseudo-RELOCATABLE
872 kernel image, where the only restriction is the page aligned kernel
873 load address. When this option is enabled, the compile time physical
874 address CONFIG_PHYSICAL_START is ignored.
876 This option is overridden by CONFIG_RELOCATABLE
879 bool "Build a relocatable kernel"
880 depends on ADVANCED_OPTIONS && FLATMEM && 44x
881 select NONSTATIC_KERNEL
883 This builds a kernel image that is capable of running at the
884 location the kernel is loaded at, without any alignment restrictions.
885 This feature is a superset of DYNAMIC_MEMSTART and hence overrides it.
887 One use is for the kexec on panic case where the recovery kernel
888 must live at a different physical address than the primary
891 Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address
892 it has been loaded at and the compile time physical addresses
893 CONFIG_PHYSICAL_START is ignored. However CONFIG_PHYSICAL_START
894 setting can still be useful to bootwrappers that need to know the
895 load address of the kernel (eg. u-boot/mkimage).
897 config RELOCATABLE_PPC32
899 depends on PPC32 && RELOCATABLE
901 config PAGE_OFFSET_BOOL
902 bool "Set custom page offset address"
903 depends on ADVANCED_OPTIONS
905 This option allows you to set the kernel virtual address at which
906 the kernel will map low memory. This can be useful in optimizing
907 the virtual memory layout of the system.
909 Say N here unless you know what you are doing.
912 hex "Virtual address of memory base" if PAGE_OFFSET_BOOL
915 config KERNEL_START_BOOL
916 bool "Set custom kernel base address"
917 depends on ADVANCED_OPTIONS
919 This option allows you to set the kernel virtual address at which
920 the kernel will be loaded. Normally this should match PAGE_OFFSET
921 however there are times (like kdump) that one might not want them
924 Say N here unless you know what you are doing.
927 hex "Virtual address of kernel base" if KERNEL_START_BOOL
928 default PAGE_OFFSET if PAGE_OFFSET_BOOL
929 default "0xc2000000" if CRASH_DUMP && !NONSTATIC_KERNEL
932 config PHYSICAL_START_BOOL
933 bool "Set physical address where the kernel is loaded"
934 depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE
936 This gives the physical address where the kernel is loaded.
938 Say N here unless you know what you are doing.
940 config PHYSICAL_START
941 hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL
942 default "0x02000000" if PPC_STD_MMU && CRASH_DUMP && !NONSTATIC_KERNEL
945 config PHYSICAL_ALIGN
947 default "0x04000000" if FSL_BOOKE
949 This value puts the alignment restrictions on physical address
950 where kernel is loaded and run from. Kernel is compiled for an
951 address which meets above alignment restriction.
953 config TASK_SIZE_BOOL
954 bool "Set custom user task size"
955 depends on ADVANCED_OPTIONS
957 This option allows you to set the amount of virtual address space
958 allocated to user tasks. This can be useful in optimizing the
959 virtual memory layout of the system.
961 Say N here unless you know what you are doing.
964 hex "Size of user task space" if TASK_SIZE_BOOL
965 default "0x80000000" if PPC_PREP || PPC_8xx
968 config CONSISTENT_SIZE_BOOL
969 bool "Set custom consistent memory pool size"
970 depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
972 This option allows you to set the size of the
973 consistent memory pool. This pool of virtual memory
974 is used to make consistent memory allocations.
976 config CONSISTENT_SIZE
977 hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
978 default "0x00200000" if NOT_COHERENT_CACHE
981 bool "Pinned Kernel TLBs (860 ONLY)"
982 depends on ADVANCED_OPTIONS && 8xx
987 bool "Build a relocatable kernel"
988 select NONSTATIC_KERNEL
990 This builds a kernel image that is capable of running anywhere
991 in the RMA (real memory area) at any 16k-aligned base address.
992 The kernel is linked as a position-independent executable (PIE)
993 and contains dynamic relocations which are processed early
994 in the bootup process.
996 One use is for the kexec on panic case where the recovery kernel
997 must live at a different physical address than the primary
1002 default "0xc000000000000000"
1005 default "0xc000000000000000"
1006 config PHYSICAL_START
1008 default "0x00000000"
1011 source "net/Kconfig"
1013 source "drivers/Kconfig"
1017 source "arch/powerpc/sysdev/qe_lib/Kconfig"
1019 source "lib/Kconfig"
1021 source "arch/powerpc/Kconfig.debug"
1023 source "security/Kconfig"
1027 depends on COMPAT && KEYS
1030 source "crypto/Kconfig"
1037 config PPC_LIB_RHEAP
1040 source "arch/powerpc/kvm/Kconfig"