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
121 select HAVE_PERF_EVENTS
122 select HAVE_REGS_AND_STACK_ACCESS_API
123 select HAVE_HW_BREAKPOINT if PERF_EVENTS && PPC_BOOK3S_64
124 select HAVE_GENERIC_HARDIRQS
125 select ARCH_WANT_IPC_PARSE_VERSION
128 select GENERIC_IRQ_SHOW
129 select GENERIC_IRQ_SHOW_LEVEL
130 select IRQ_FORCED_THREADING
131 select HAVE_RCU_TABLE_FREE if SMP
132 select HAVE_SYSCALL_TRACEPOINTS
133 select HAVE_BPF_JIT if PPC64
134 select HAVE_ARCH_JUMP_LABEL
135 select ARCH_HAVE_NMI_SAFE_CMPXCHG
136 select GENERIC_SMP_IDLE_THREAD
137 select GENERIC_CMOS_UPDATE
138 select GENERIC_TIME_VSYSCALL_OLD
139 select GENERIC_CLOCKEVENTS
140 select GENERIC_STRNCPY_FROM_USER
141 select GENERIC_STRNLEN_USER
142 select HAVE_MOD_ARCH_SPECIFIC
143 select MODULES_USE_ELF_RELA
144 select CLONE_BACKWARDS
153 select COMPAT_BINFMT_ELF
154 select ARCH_WANT_OLD_COMPAT_IPC
156 config SYSVIPC_COMPAT
158 depends on COMPAT && SYSVIPC
161 # All PPC32s use generic nvram driver through ppc_md
166 config SCHED_OMIT_FRAME_POINTER
170 config ARCH_MAY_HAVE_PC_FDC
172 default !PPC_PSERIES || PCI
177 config PPC_UDBG_16550
181 config GENERIC_TBSYNC
183 default y if PPC32 && SMP
195 config SYS_SUPPORTS_APM_EMULATION
196 default y if PMAC_APM_EMU
202 Used to allow a board to specify it wants an ePAPR compliant wrapper.
205 config DEFAULT_UIMAGE
208 Used to allow a board to specify it wants a uImage built by default
214 config ARCH_HIBERNATION_POSSIBLE
218 config ARCH_SUSPEND_POSSIBLE
220 depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx || \
221 (PPC_85xx && !PPC_E500MC) || PPC_86xx || PPC_PSERIES \
224 config PPC_DCR_NATIVE
234 depends on PPC_DCR_NATIVE || PPC_DCR_MMIO
237 config PPC_OF_PLATFORM_PCI
240 depends on PPC64 # not supported on 32 bits yet
243 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
246 config ARCH_SUPPORTS_UPROBES
249 config PPC_ADV_DEBUG_REGS
251 depends on 40x || BOOKE
254 config PPC_ADV_DEBUG_IACS
256 depends on PPC_ADV_DEBUG_REGS
260 config PPC_ADV_DEBUG_DACS
262 depends on PPC_ADV_DEBUG_REGS
265 config PPC_ADV_DEBUG_DVCS
267 depends on PPC_ADV_DEBUG_REGS
271 config PPC_ADV_DEBUG_DAC_RANGE
273 depends on PPC_ADV_DEBUG_REGS && 44x
276 source "init/Kconfig"
278 source "kernel/Kconfig.freezer"
280 source "arch/powerpc/sysdev/Kconfig"
281 source "arch/powerpc/platforms/Kconfig"
283 menu "Kernel options"
286 bool "High memory support"
289 source kernel/Kconfig.hz
290 source kernel/Kconfig.preempt
291 source "fs/Kconfig.binfmt"
293 config HUGETLB_PAGE_SIZE_VARIABLE
295 depends on HUGETLB_PAGE
298 config MATH_EMULATION
299 bool "Math emulation"
300 depends on 4xx || 8xx || E200 || PPC_MPC832x || E500
302 Some PowerPC chips designed for embedded applications do not have
303 a floating-point unit and therefore do not implement the
304 floating-point instructions in the PowerPC instruction set. If you
305 say Y here, the kernel will include code to emulate a floating-point
306 unit, which will allow programs that use floating-point
309 config 8XX_MINIMAL_FPEMU
310 bool "Minimal math emulation for 8xx"
311 depends on 8xx && !MATH_EMULATION
313 Older arch/ppc kernels still emulated a few floating point
314 instructions such as load and store, even when full math
315 emulation is disabled. Say "Y" here if you want to preserve
318 It is recommended that you build a soft-float userspace instead.
324 bool "SWIOTLB support"
328 Support for IO bounce buffering for systems without an IOMMU.
329 This allows us to DMA to the full physical address space on
330 platforms where the size of a physical address is larger
331 than the bus address. Not all platforms support this.
334 bool "Support for enabling/disabling CPUs"
335 depends on SMP && HOTPLUG && EXPERIMENTAL && (PPC_PSERIES || \
336 PPC_PMAC || PPC_POWERNV || (PPC_85xx && !PPC_E500MC))
338 Say Y here to be able to disable and re-enable individual
339 CPUs at runtime on SMP machines.
341 Say N if you are unsure.
343 config ARCH_CPU_PROBE_RELEASE
345 depends on HOTPLUG_CPU
347 config ARCH_ENABLE_MEMORY_HOTPLUG
350 config ARCH_HAS_WALK_MEMORY
353 config ARCH_ENABLE_MEMORY_HOTREMOVE
357 bool "kexec system call (EXPERIMENTAL)"
358 depends on (PPC_BOOK3S || FSL_BOOKE || (44x && !SMP)) && EXPERIMENTAL
360 kexec is a system call that implements the ability to shutdown your
361 current kernel, and to start another kernel. It is like a reboot
362 but it is independent of the system firmware. And like a reboot
363 you can start any kernel with it, not just Linux.
365 The name comes from the similarity to the exec system call.
367 It is an ongoing process to be certain the hardware in a machine
368 is properly shutdown, so do not be surprised if this code does not
369 initially work for you. It may help to enable device hotplugging
370 support. As of this writing the exact hardware interface is
371 strongly in flux, so no good recommendation can be made.
374 bool "Build a kdump crash kernel"
375 depends on PPC64 || 6xx || FSL_BOOKE || (44x && !SMP)
376 select RELOCATABLE if PPC64 || 44x
377 select DYNAMIC_MEMSTART if FSL_BOOKE
379 Build a kernel suitable for use as a kdump capture kernel.
380 The same kernel binary can be used as production kernel and dump
384 bool "Firmware-assisted dump"
385 depends on PPC64 && PPC_RTAS && CRASH_DUMP
387 A robust mechanism to get reliable kernel crash dump with
388 assistance from firmware. This approach does not use kexec,
389 instead firmware assists in booting the kdump kernel
390 while preserving memory contents. Firmware-assisted dump
391 is meant to be a kdump replacement offering robustness and
392 speed not possible without system firmware assistance.
397 bool "Distribute interrupts on all CPUs by default"
398 depends on SMP && !MV64360
400 This option gives the kernel permission to distribute IRQs across
401 multiple CPUs. Saying N here will route all IRQs to the first
402 CPU. Generally saying Y is safe, although some problems have been
403 reported with SMP Power Macintoshes with this option enabled.
408 default y if SMP && PPC_PSERIES
414 depends on NEED_MULTIPLE_NODES
416 config MAX_ACTIVE_REGIONS
418 default "256" if PPC64
421 config ARCH_SELECT_MEMORY_MODEL
425 config ARCH_FLATMEM_ENABLE
427 depends on (PPC64 && !NUMA) || PPC32
429 config ARCH_SPARSEMEM_ENABLE
432 select SPARSEMEM_VMEMMAP_ENABLE
434 config ARCH_SPARSEMEM_DEFAULT
436 depends on (SMP && PPC_PSERIES) || PPC_PS3
438 config SYS_SUPPORTS_HUGETLBFS
443 config ARCH_MEMORY_PROBE
445 depends on MEMORY_HOTPLUG
447 # Some NUMA nodes have memory ranges that span
448 # other nodes. Even though a pfn is valid and
449 # between a node's start and end pfns, it may not
450 # reside on that node. See memmap_init_zone()
452 config NODES_SPAN_OTHER_NODES
454 depends on NEED_MULTIPLE_NODES
456 config PPC_HAS_HASH_64K
462 bool "Using standard binutils settings"
466 Turning this option off allows you to select 256KB PAGE_SIZE on 44x.
467 Note, that kernel will be able to run only those applications,
468 which had been compiled using binutils later than 2.17.50.0.3 with
469 '-zmax-page-size' set to 256K (the default is 64K). Or, if using
470 the older binutils, you can patch them with a trivial patch, which
471 changes the ELF_MAXPAGESIZE definition from 0x10000 to 0x40000.
477 Select the kernel logical page size. Increasing the page size
478 will reduce software overhead at each page boundary, allow
479 hardware prefetch mechanisms to be more effective, and allow
480 larger dma transfers increasing IO efficiency and reducing
481 overhead. However the utilization of memory will increase.
482 For example, each cached file will using a multiple of the
483 page size to hold its contents and the difference between the
484 end of file and the end of page is wasted.
486 Some dedicated systems, such as software raid serving with
487 accelerated calculations, have shown significant increases.
489 If you configure a 64 bit kernel for 64k pages but the
490 processor does not support them, then the kernel will simulate
491 them with 4k pages, loading them on demand, but with the
492 reduced software overhead and larger internal fragmentation.
493 For the 32 bit kernel, a large page option will not be offered
494 unless it is supported by the configured processor.
496 If unsure, choose 4K_PAGES.
502 bool "16k page size" if 44x
505 bool "64k page size" if 44x || PPC_STD_MMU_64 || PPC_BOOK3E_64
506 select PPC_HAS_HASH_64K if PPC_STD_MMU_64
508 config PPC_256K_PAGES
509 bool "256k page size" if 44x
510 depends on !STDBINUTILS
512 Make the page size 256k.
514 As the ELF standard only requires alignment to support page
515 sizes up to 64k, you will need to compile all of your user
516 space applications with a non-standard binutils settings
517 (see the STDBINUTILS description for details).
519 Say N unless you know what you are doing.
523 config FORCE_MAX_ZONEORDER
524 int "Maximum zone order"
525 range 9 64 if PPC64 && PPC_64K_PAGES
526 default "9" if PPC64 && PPC_64K_PAGES
527 range 13 64 if PPC64 && !PPC_64K_PAGES
528 default "13" if PPC64 && !PPC_64K_PAGES
529 range 9 64 if PPC32 && PPC_16K_PAGES
530 default "9" if PPC32 && PPC_16K_PAGES
531 range 7 64 if PPC32 && PPC_64K_PAGES
532 default "7" if PPC32 && PPC_64K_PAGES
533 range 5 64 if PPC32 && PPC_256K_PAGES
534 default "5" if PPC32 && PPC_256K_PAGES
538 The kernel memory allocator divides physically contiguous memory
539 blocks into "zones", where each zone is a power of two number of
540 pages. This option selects the largest power of two that the kernel
541 keeps in the memory allocator. If you need to allocate very large
542 blocks of physically contiguous memory, then you may need to
545 This config option is actually maximum order plus one. For example,
546 a value of 11 means that the largest free memory block is 2^10 pages.
548 The page size is not necessarily 4KB. For example, on 64-bit
549 systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES. Keep
550 this in mind when choosing a value for this option.
552 config PPC_SUBPAGE_PROT
553 bool "Support setting protections for 4k subpages"
554 depends on PPC_STD_MMU_64 && PPC_64K_PAGES
556 This option adds support for a system call to allow user programs
557 to set access permissions (read/write, readonly, or no access)
558 on the 4k subpages of each 64k page.
561 bool "SMT (Hyperthreading) scheduler support"
562 depends on PPC64 && SMP
564 SMT scheduler support improves the CPU scheduler's decision making
565 when dealing with POWER5 cpus at a cost of slightly increased
566 overhead in some places. If unsure say N here.
568 config PPC_DENORMALISATION
569 bool "PowerPC denormalisation exception handling"
570 depends on PPC_BOOK3S_64
573 Add support for handling denormalisation of single precision
574 values. Useful for bare metal only. If unsure say Y here.
577 bool "Default bootloader kernel arguments"
580 string "Initial kernel command string"
581 depends on CMDLINE_BOOL
582 default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
584 On some platforms, there is currently no way for the boot loader to
585 pass arguments to the kernel. For these platforms, you can supply
586 some command-line options at build time by entering them here. In
587 most cases you will need to specify the root device here.
590 string "Additional default image types"
592 List additional targets to be built by the bootwrapper here (separated
593 by spaces). This is useful for targets that depend of device tree
594 files in the .dts directory.
596 Targets in this list will be build as part of the default build
597 target, or when the user does a 'make zImage' or a
598 'make zImage.initrd'.
600 If unsure, leave blank
602 config ARCH_WANTS_FREEZER_CONTROL
606 source kernel/power/Kconfig
609 bool "Enable seccomp to safely compute untrusted bytecode"
613 This kernel feature is useful for number crunching applications
614 that may need to compute untrusted bytecode during their
615 execution. By using pipes or other transports made available to
616 the process as file descriptors supporting the read/write
617 syscalls, it's possible to isolate those applications in
618 their own address space using seccomp. Once seccomp is
619 enabled via /proc/<pid>/seccomp, it cannot be disabled
620 and the task is only allowed to execute a few safe syscalls
621 defined by each seccomp mode.
623 If unsure, say Y. Only embedded should say N here.
634 bool "Support for ISA-bus hardware"
635 depends on PPC_PREP || PPC_CHRP
638 Find out whether you have ISA slots on your motherboard. ISA is the
639 name of a bus system, i.e. the way the CPU talks to the other stuff
640 inside your box. If you have an Apple machine, say N here; if you
641 have an IBM RS/6000 or pSeries machine or a PReP machine, say Y. If
642 you have an embedded board, consult your board documentation.
648 config NEED_DMA_MAP_STATE
649 def_bool (PPC64 || NOT_COHERENT_CACHE)
651 config NEED_SG_DMA_LENGTH
654 config GENERIC_ISA_DMA
656 depends on ISA_DMA_API
659 config PPC_INDIRECT_PCI
662 default y if 40x || 44x
673 select HAVE_CAN_FLEXCAN if NET && CAN
678 select PPC_INDIRECT_PCI
684 depends on SUSPEND && (PPC_85xx || PPC_86xx)
686 Freescale MPC85xx/MPC86xx power management controller support
687 (suspend/resume). For MPC83xx see platforms/83xx/suspend.c
692 depends on SUSPEND && (44x || 40x)
694 PPC4xx Clock Power Management (CPM) support (suspend/resume).
695 It also enables support for two different idle states (idle-wait
702 bool "Freescale Local Bus support"
705 Enables reporting of errors from the Freescale local bus
706 controller. Also contains some common code used by
707 drivers for specific local bus peripherals.
715 depends on PPC_83xx || QUICC_ENGINE || CPM2
717 Freescale General-purpose Timers support
719 # Yes MCA RS/6000s exist but Linux-PPC does not currently support any
723 # Platforms that what PCI turned unconditionally just do select PCI
724 # in their config node. Platforms that want to choose at config
725 # time should select PPC_PCI_CHOICE
726 config PPC_PCI_CHOICE
730 bool "PCI support" if PPC_PCI_CHOICE
731 default y if !40x && !CPM2 && !8xx && !PPC_83xx \
732 && !PPC_85xx && !PPC_86xx && !GAMECUBE_COMMON
733 default PCI_PERMEDIA if !4xx && !CPM2 && !8xx
734 default PCI_QSPAN if !4xx && !CPM2 && 8xx
735 select ARCH_SUPPORTS_MSI
736 select GENERIC_PCI_IOMAP
738 Find out whether your system includes a PCI bus. PCI is the name of
739 a bus system, i.e. the way the CPU talks to the other stuff inside
740 your box. If you say Y here, the kernel will include drivers and
741 infrastructure code to support PCI bus devices.
751 depends on !4xx && !CPM2 && 8xx
754 Say Y here if you have a system based on a Motorola 8xx-series
755 embedded processor with a QSPAN PCI interface, otherwise say N.
759 depends on PCI && 8260
760 select PPC_INDIRECT_PCI
764 bool "Enable workaround for MPC826x erratum PCI 9"
765 depends on PCI_8260 && !8272
768 source "drivers/pci/pcie/Kconfig"
770 source "drivers/pci/Kconfig"
772 source "drivers/pcmcia/Kconfig"
774 source "drivers/pci/hotplug/Kconfig"
781 bool "RapidIO support"
782 depends on HAS_RAPIDIO || PCI
784 If you say Y here, the kernel will include drivers and
785 infrastructure code to support RapidIO interconnect devices.
788 bool "Freescale Embedded SRIO Controller support"
789 depends on RAPIDIO && HAS_RAPIDIO
792 Include support for RapidIO controller on Freescale embedded
793 processors (MPC8548, MPC8641, etc).
795 source "drivers/rapidio/Kconfig"
799 config NONSTATIC_KERNEL
803 menu "Advanced setup"
806 config ADVANCED_OPTIONS
807 bool "Prompt for advanced kernel configuration options"
809 This option will enable prompting for a variety of advanced kernel
810 configuration options. These options can cause the kernel to not
811 work if they are set incorrectly, but can be used to optimize certain
812 aspects of kernel memory management.
814 Unless you know what you are doing, say N here.
816 comment "Default settings for advanced configuration options are used"
817 depends on !ADVANCED_OPTIONS
819 config LOWMEM_SIZE_BOOL
820 bool "Set maximum low memory"
821 depends on ADVANCED_OPTIONS
823 This option allows you to set the maximum amount of memory which
824 will be used as "low memory", that is, memory which the kernel can
825 access directly, without having to set up a kernel virtual mapping.
826 This can be useful in optimizing the layout of kernel virtual
829 Say N here unless you know what you are doing.
832 hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
835 config LOWMEM_CAM_NUM_BOOL
836 bool "Set number of CAMs to use to map low memory"
837 depends on ADVANCED_OPTIONS && FSL_BOOKE
839 This option allows you to set the maximum number of CAM slots that
840 will be used to map low memory. There are a limited number of slots
841 available and even more limited number that will fit in the L1 MMU.
842 However, using more entries will allow mapping more low memory. This
843 can be useful in optimizing the layout of kernel virtual memory.
845 Say N here unless you know what you are doing.
847 config LOWMEM_CAM_NUM
849 int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL
852 config DYNAMIC_MEMSTART
853 bool "Enable page aligned dynamic load address for kernel (EXPERIMENTAL)"
854 depends on EXPERIMENTAL && ADVANCED_OPTIONS && FLATMEM && (FSL_BOOKE || 44x)
855 select NONSTATIC_KERNEL
857 This option enables the kernel to be loaded at any page aligned
858 physical address. The kernel creates a mapping from KERNELBASE to
859 the address where the kernel is loaded. The page size here implies
860 the TLB page size of the mapping for kernel on the particular platform.
861 Please refer to the init code for finding the TLB page size.
863 DYNAMIC_MEMSTART is an easy way of implementing pseudo-RELOCATABLE
864 kernel image, where the only restriction is the page aligned kernel
865 load address. When this option is enabled, the compile time physical
866 address CONFIG_PHYSICAL_START is ignored.
868 This option is overridden by CONFIG_RELOCATABLE
871 bool "Build a relocatable kernel (EXPERIMENTAL)"
872 depends on EXPERIMENTAL && ADVANCED_OPTIONS && FLATMEM && 44x
873 select NONSTATIC_KERNEL
875 This builds a kernel image that is capable of running at the
876 location the kernel is loaded at, without any alignment restrictions.
877 This feature is a superset of DYNAMIC_MEMSTART and hence overrides it.
879 One use is for the kexec on panic case where the recovery kernel
880 must live at a different physical address than the primary
883 Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address
884 it has been loaded at and the compile time physical addresses
885 CONFIG_PHYSICAL_START is ignored. However CONFIG_PHYSICAL_START
886 setting can still be useful to bootwrappers that need to know the
887 load address of the kernel (eg. u-boot/mkimage).
889 config RELOCATABLE_PPC32
891 depends on PPC32 && RELOCATABLE
893 config PAGE_OFFSET_BOOL
894 bool "Set custom page offset address"
895 depends on ADVANCED_OPTIONS
897 This option allows you to set the kernel virtual address at which
898 the kernel will map low memory. This can be useful in optimizing
899 the virtual memory layout of the system.
901 Say N here unless you know what you are doing.
904 hex "Virtual address of memory base" if PAGE_OFFSET_BOOL
907 config KERNEL_START_BOOL
908 bool "Set custom kernel base address"
909 depends on ADVANCED_OPTIONS
911 This option allows you to set the kernel virtual address at which
912 the kernel will be loaded. Normally this should match PAGE_OFFSET
913 however there are times (like kdump) that one might not want them
916 Say N here unless you know what you are doing.
919 hex "Virtual address of kernel base" if KERNEL_START_BOOL
920 default PAGE_OFFSET if PAGE_OFFSET_BOOL
921 default "0xc2000000" if CRASH_DUMP && !NONSTATIC_KERNEL
924 config PHYSICAL_START_BOOL
925 bool "Set physical address where the kernel is loaded"
926 depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE
928 This gives the physical address where the kernel is loaded.
930 Say N here unless you know what you are doing.
932 config PHYSICAL_START
933 hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL
934 default "0x02000000" if PPC_STD_MMU && CRASH_DUMP && !NONSTATIC_KERNEL
937 config PHYSICAL_ALIGN
939 default "0x04000000" if FSL_BOOKE
941 This value puts the alignment restrictions on physical address
942 where kernel is loaded and run from. Kernel is compiled for an
943 address which meets above alignment restriction.
945 config TASK_SIZE_BOOL
946 bool "Set custom user task size"
947 depends on ADVANCED_OPTIONS
949 This option allows you to set the amount of virtual address space
950 allocated to user tasks. This can be useful in optimizing the
951 virtual memory layout of the system.
953 Say N here unless you know what you are doing.
956 hex "Size of user task space" if TASK_SIZE_BOOL
957 default "0x80000000" if PPC_PREP || PPC_8xx
960 config CONSISTENT_SIZE_BOOL
961 bool "Set custom consistent memory pool size"
962 depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
964 This option allows you to set the size of the
965 consistent memory pool. This pool of virtual memory
966 is used to make consistent memory allocations.
968 config CONSISTENT_SIZE
969 hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
970 default "0x00200000" if NOT_COHERENT_CACHE
973 bool "Pinned Kernel TLBs (860 ONLY)"
974 depends on ADVANCED_OPTIONS && 8xx
979 bool "Build a relocatable kernel"
980 select NONSTATIC_KERNEL
982 This builds a kernel image that is capable of running anywhere
983 in the RMA (real memory area) at any 16k-aligned base address.
984 The kernel is linked as a position-independent executable (PIE)
985 and contains dynamic relocations which are processed early
986 in the bootup process.
988 One use is for the kexec on panic case where the recovery kernel
989 must live at a different physical address than the primary
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"