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 ARCH_WANT_IPC_PARSE_VERSION
120 select GENERIC_IRQ_SHOW
121 select GENERIC_IRQ_SHOW_LEVEL
122 select IRQ_FORCED_THREADING
123 select HAVE_RCU_TABLE_FREE if SMP
124 select HAVE_SYSCALL_TRACEPOINTS
125 select HAVE_BPF_JIT if PPC64
126 select HAVE_ARCH_JUMP_LABEL
127 select ARCH_HAVE_NMI_SAFE_CMPXCHG
128 select GENERIC_SMP_IDLE_THREAD
129 select GENERIC_CMOS_UPDATE
130 select GENERIC_TIME_VSYSCALL_OLD
131 select GENERIC_CLOCKEVENTS
132 select GENERIC_STRNCPY_FROM_USER
133 select GENERIC_STRNLEN_USER
134 select HAVE_MOD_ARCH_SPECIFIC
135 select MODULES_USE_ELF_RELA
136 select CLONE_BACKWARDS
137 select ARCH_USE_BUILTIN_BSWAP
138 select OLD_SIGSUSPEND
139 select OLD_SIGACTION if PPC32
140 select HAVE_DEBUG_STACKOVERFLOW
149 select COMPAT_BINFMT_ELF
150 select ARCH_WANT_OLD_COMPAT_IPC
151 select COMPAT_OLD_SIGACTION
153 config SYSVIPC_COMPAT
155 depends on COMPAT && SYSVIPC
158 # All PPC32s use generic nvram driver through ppc_md
163 config SCHED_OMIT_FRAME_POINTER
167 config ARCH_MAY_HAVE_PC_FDC
169 default !PPC_PSERIES || PCI
174 config PPC_UDBG_16550
178 config GENERIC_TBSYNC
180 default y if PPC32 && SMP
192 config SYS_SUPPORTS_APM_EMULATION
193 default y if PMAC_APM_EMU
199 Used to allow a board to specify it wants an ePAPR compliant wrapper.
202 config DEFAULT_UIMAGE
205 Used to allow a board to specify it wants a uImage built by default
211 config ARCH_HIBERNATION_POSSIBLE
215 config ARCH_SUSPEND_POSSIBLE
217 depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx || \
218 (PPC_85xx && !PPC_E500MC) || PPC_86xx || PPC_PSERIES \
221 config PPC_DCR_NATIVE
231 depends on PPC_DCR_NATIVE || PPC_DCR_MMIO
234 config PPC_OF_PLATFORM_PCI
237 depends on PPC64 # not supported on 32 bits yet
240 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
243 config ARCH_SUPPORTS_UPROBES
246 config PPC_ADV_DEBUG_REGS
248 depends on 40x || BOOKE
251 config PPC_ADV_DEBUG_IACS
253 depends on PPC_ADV_DEBUG_REGS
257 config PPC_ADV_DEBUG_DACS
259 depends on PPC_ADV_DEBUG_REGS
262 config PPC_ADV_DEBUG_DVCS
264 depends on PPC_ADV_DEBUG_REGS
268 config PPC_ADV_DEBUG_DAC_RANGE
270 depends on PPC_ADV_DEBUG_REGS && 44x
273 config PPC_EMULATE_SSTEP
275 default y if KPROBES || UPROBES || XMON || HAVE_HW_BREAKPOINT
277 source "init/Kconfig"
279 source "kernel/Kconfig.freezer"
281 source "arch/powerpc/sysdev/Kconfig"
282 source "arch/powerpc/platforms/Kconfig"
284 menu "Kernel options"
287 bool "High memory support"
290 source kernel/Kconfig.hz
291 source kernel/Kconfig.preempt
292 source "fs/Kconfig.binfmt"
294 config HUGETLB_PAGE_SIZE_VARIABLE
296 depends on HUGETLB_PAGE
299 config MATH_EMULATION
300 bool "Math emulation"
301 depends on 4xx || 8xx || PPC_MPC832x || BOOKE
303 Some PowerPC chips designed for embedded applications do not have
304 a floating-point unit and therefore do not implement the
305 floating-point instructions in the PowerPC instruction set. If you
306 say Y here, the kernel will include code to emulate a floating-point
307 unit, which will allow programs that use floating-point
310 This is also useful to emulate missing (optional) instructions
311 such as fsqrt on cores that do have an FPU but do not implement
312 them (such as Freescale BookE).
315 prompt "Math emulation options"
316 default MATH_EMULATION_FULL
317 depends on MATH_EMULATION
319 config MATH_EMULATION_FULL
320 bool "Emulate all the floating point instructions"
322 Select this option will enable the kernel to support to emulate
323 all the floating point instructions. If your SoC doesn't have
324 a FPU, you should select this.
326 config MATH_EMULATION_HW_UNIMPLEMENTED
327 bool "Just emulate the FPU unimplemented instructions"
329 Select this if you know there does have a hardware FPU on your
330 SoC, but some floating point instructions are not implemented by that.
334 config PPC_TRANSACTIONAL_MEM
335 bool "Transactional Memory support for POWERPC"
336 depends on PPC_BOOK3S_64
340 Support user-mode Transactional Memory on POWERPC.
346 bool "SWIOTLB support"
350 Support for IO bounce buffering for systems without an IOMMU.
351 This allows us to DMA to the full physical address space on
352 platforms where the size of a physical address is larger
353 than the bus address. Not all platforms support this.
356 bool "Support for enabling/disabling CPUs"
357 depends on SMP && (PPC_PSERIES || \
358 PPC_PMAC || PPC_POWERNV || (PPC_85xx && !PPC_E500MC))
360 Say Y here to be able to disable and re-enable individual
361 CPUs at runtime on SMP machines.
363 Say N if you are unsure.
365 config ARCH_CPU_PROBE_RELEASE
367 depends on HOTPLUG_CPU
369 config ARCH_ENABLE_MEMORY_HOTPLUG
372 config ARCH_HAS_WALK_MEMORY
375 config ARCH_ENABLE_MEMORY_HOTREMOVE
379 bool "kexec system call"
380 depends on (PPC_BOOK3S || FSL_BOOKE || (44x && !SMP))
382 kexec is a system call that implements the ability to shutdown your
383 current kernel, and to start another kernel. It is like a reboot
384 but it is independent of the system firmware. And like a reboot
385 you can start any kernel with it, not just Linux.
387 The name comes from the similarity to the exec system call.
389 It is an ongoing process to be certain the hardware in a machine
390 is properly shutdown, so do not be surprised if this code does not
391 initially work for you. As of this writing the exact hardware
392 interface is strongly in flux, so no good recommendation can be
396 bool "Build a kdump crash kernel"
397 depends on PPC64 || 6xx || FSL_BOOKE || (44x && !SMP)
398 select RELOCATABLE if PPC64 || 44x
399 select DYNAMIC_MEMSTART if FSL_BOOKE
401 Build a kernel suitable for use as a kdump capture kernel.
402 The same kernel binary can be used as production kernel and dump
406 bool "Firmware-assisted dump"
407 depends on PPC64 && PPC_RTAS && CRASH_DUMP
409 A robust mechanism to get reliable kernel crash dump with
410 assistance from firmware. This approach does not use kexec,
411 instead firmware assists in booting the kdump kernel
412 while preserving memory contents. Firmware-assisted dump
413 is meant to be a kdump replacement offering robustness and
414 speed not possible without system firmware assistance.
419 bool "Distribute interrupts on all CPUs by default"
420 depends on SMP && !MV64360
422 This option gives the kernel permission to distribute IRQs across
423 multiple CPUs. Saying N here will route all IRQs to the first
424 CPU. Generally saying Y is safe, although some problems have been
425 reported with SMP Power Macintoshes with this option enabled.
430 default y if SMP && PPC_PSERIES
436 depends on NEED_MULTIPLE_NODES
438 config ARCH_SELECT_MEMORY_MODEL
442 config ARCH_FLATMEM_ENABLE
444 depends on (PPC64 && !NUMA) || PPC32
446 config ARCH_SPARSEMEM_ENABLE
449 select SPARSEMEM_VMEMMAP_ENABLE
451 config ARCH_SPARSEMEM_DEFAULT
453 depends on (SMP && PPC_PSERIES) || PPC_PS3
455 config SYS_SUPPORTS_HUGETLBFS
460 config ARCH_MEMORY_PROBE
462 depends on MEMORY_HOTPLUG
464 # Some NUMA nodes have memory ranges that span
465 # other nodes. Even though a pfn is valid and
466 # between a node's start and end pfns, it may not
467 # reside on that node. See memmap_init_zone()
469 config NODES_SPAN_OTHER_NODES
471 depends on NEED_MULTIPLE_NODES
473 config PPC_HAS_HASH_64K
479 bool "Using standard binutils settings"
483 Turning this option off allows you to select 256KB PAGE_SIZE on 44x.
484 Note, that kernel will be able to run only those applications,
485 which had been compiled using binutils later than 2.17.50.0.3 with
486 '-zmax-page-size' set to 256K (the default is 64K). Or, if using
487 the older binutils, you can patch them with a trivial patch, which
488 changes the ELF_MAXPAGESIZE definition from 0x10000 to 0x40000.
494 Select the kernel logical page size. Increasing the page size
495 will reduce software overhead at each page boundary, allow
496 hardware prefetch mechanisms to be more effective, and allow
497 larger dma transfers increasing IO efficiency and reducing
498 overhead. However the utilization of memory will increase.
499 For example, each cached file will using a multiple of the
500 page size to hold its contents and the difference between the
501 end of file and the end of page is wasted.
503 Some dedicated systems, such as software raid serving with
504 accelerated calculations, have shown significant increases.
506 If you configure a 64 bit kernel for 64k pages but the
507 processor does not support them, then the kernel will simulate
508 them with 4k pages, loading them on demand, but with the
509 reduced software overhead and larger internal fragmentation.
510 For the 32 bit kernel, a large page option will not be offered
511 unless it is supported by the configured processor.
513 If unsure, choose 4K_PAGES.
519 bool "16k page size" if 44x
522 bool "64k page size" if 44x || PPC_STD_MMU_64 || PPC_BOOK3E_64
523 select PPC_HAS_HASH_64K if PPC_STD_MMU_64
525 config PPC_256K_PAGES
526 bool "256k page size" if 44x
527 depends on !STDBINUTILS
529 Make the page size 256k.
531 As the ELF standard only requires alignment to support page
532 sizes up to 64k, you will need to compile all of your user
533 space applications with a non-standard binutils settings
534 (see the STDBINUTILS description for details).
536 Say N unless you know what you are doing.
540 config FORCE_MAX_ZONEORDER
541 int "Maximum zone order"
542 range 9 64 if PPC64 && PPC_64K_PAGES
543 default "9" if PPC64 && PPC_64K_PAGES
544 range 13 64 if PPC64 && !PPC_64K_PAGES
545 default "13" if PPC64 && !PPC_64K_PAGES
546 range 9 64 if PPC32 && PPC_16K_PAGES
547 default "9" if PPC32 && PPC_16K_PAGES
548 range 7 64 if PPC32 && PPC_64K_PAGES
549 default "7" if PPC32 && PPC_64K_PAGES
550 range 5 64 if PPC32 && PPC_256K_PAGES
551 default "5" if PPC32 && PPC_256K_PAGES
555 The kernel memory allocator divides physically contiguous memory
556 blocks into "zones", where each zone is a power of two number of
557 pages. This option selects the largest power of two that the kernel
558 keeps in the memory allocator. If you need to allocate very large
559 blocks of physically contiguous memory, then you may need to
562 This config option is actually maximum order plus one. For example,
563 a value of 11 means that the largest free memory block is 2^10 pages.
565 The page size is not necessarily 4KB. For example, on 64-bit
566 systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES. Keep
567 this in mind when choosing a value for this option.
569 config PPC_SUBPAGE_PROT
570 bool "Support setting protections for 4k subpages"
571 depends on PPC_STD_MMU_64 && PPC_64K_PAGES
573 This option adds support for a system call to allow user programs
574 to set access permissions (read/write, readonly, or no access)
575 on the 4k subpages of each 64k page.
578 bool "SMT (Hyperthreading) scheduler support"
579 depends on PPC64 && SMP
581 SMT scheduler support improves the CPU scheduler's decision making
582 when dealing with POWER5 cpus at a cost of slightly increased
583 overhead in some places. If unsure say N here.
585 config PPC_DENORMALISATION
586 bool "PowerPC denormalisation exception handling"
587 depends on PPC_BOOK3S_64
588 default "y" if PPC_POWERNV
590 Add support for handling denormalisation of single precision
591 values. Useful for bare metal only. If unsure say Y here.
594 bool "Default bootloader kernel arguments"
597 string "Initial kernel command string"
598 depends on CMDLINE_BOOL
599 default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
601 On some platforms, there is currently no way for the boot loader to
602 pass arguments to the kernel. For these platforms, you can supply
603 some command-line options at build time by entering them here. In
604 most cases you will need to specify the root device here.
607 string "Additional default image types"
609 List additional targets to be built by the bootwrapper here (separated
610 by spaces). This is useful for targets that depend of device tree
611 files in the .dts directory.
613 Targets in this list will be build as part of the default build
614 target, or when the user does a 'make zImage' or a
615 'make zImage.initrd'.
617 If unsure, leave blank
619 config ARCH_WANTS_FREEZER_CONTROL
623 source kernel/power/Kconfig
626 bool "Enable seccomp to safely compute untrusted bytecode"
630 This kernel feature is useful for number crunching applications
631 that may need to compute untrusted bytecode during their
632 execution. By using pipes or other transports made available to
633 the process as file descriptors supporting the read/write
634 syscalls, it's possible to isolate those applications in
635 their own address space using seccomp. Once seccomp is
636 enabled via /proc/<pid>/seccomp, it cannot be disabled
637 and the task is only allowed to execute a few safe syscalls
638 defined by each seccomp mode.
640 If unsure, say Y. Only embedded should say N here.
651 bool "Support for ISA-bus hardware"
655 Find out whether you have ISA slots on your motherboard. ISA is the
656 name of a bus system, i.e. the way the CPU talks to the other stuff
657 inside your box. If you have an Apple machine, say N here; if you
658 have an IBM RS/6000 or pSeries machine, say Y. If you have an
659 embedded board, consult your board documentation.
665 config NEED_DMA_MAP_STATE
666 def_bool (PPC64 || NOT_COHERENT_CACHE)
668 config NEED_SG_DMA_LENGTH
671 config GENERIC_ISA_DMA
673 depends on ISA_DMA_API
676 config PPC_INDIRECT_PCI
679 default y if 40x || 44x
693 select PPC_INDIRECT_PCI
699 depends on SUSPEND && (PPC_85xx || PPC_86xx)
701 Freescale MPC85xx/MPC86xx power management controller support
702 (suspend/resume). For MPC83xx see platforms/83xx/suspend.c
707 depends on SUSPEND && (44x || 40x)
709 PPC4xx Clock Power Management (CPM) support (suspend/resume).
710 It also enables support for two different idle states (idle-wait
717 bool "Freescale Local Bus support"
720 Enables reporting of errors from the Freescale local bus
721 controller. Also contains some common code used by
722 drivers for specific local bus peripherals.
730 depends on PPC_83xx || QUICC_ENGINE || CPM2
732 Freescale General-purpose Timers support
734 # Yes MCA RS/6000s exist but Linux-PPC does not currently support any
738 # Platforms that what PCI turned unconditionally just do select PCI
739 # in their config node. Platforms that want to choose at config
740 # time should select PPC_PCI_CHOICE
741 config PPC_PCI_CHOICE
745 bool "PCI support" if PPC_PCI_CHOICE
746 default y if !40x && !CPM2 && !8xx && !PPC_83xx \
747 && !PPC_85xx && !PPC_86xx && !GAMECUBE_COMMON
748 default PCI_QSPAN if !4xx && !CPM2 && 8xx
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_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
1000 # This value must have zeroes in the bottom 60 bits otherwise lots will break
1003 default "0xc000000000000000"
1006 default "0xc000000000000000"
1007 config PHYSICAL_START
1009 default "0x00000000"
1012 source "net/Kconfig"
1014 source "drivers/Kconfig"
1018 source "arch/powerpc/sysdev/qe_lib/Kconfig"
1020 source "lib/Kconfig"
1022 source "arch/powerpc/Kconfig.debug"
1024 source "security/Kconfig"
1028 depends on COMPAT && KEYS
1031 source "crypto/Kconfig"
1038 config PPC_LIB_RHEAP
1041 source "arch/powerpc/kvm/Kconfig"