1 source "arch/powerpc/platforms/Kconfig.cputype"
20 config ARCH_PHYS_ADDR_T_64BIT
21 def_bool PPC64 || PHYS_64BIT
23 config ARCH_DMA_ADDR_T_64BIT
24 def_bool ARCH_PHYS_ADDR_T_64BIT
30 config HAVE_SETUP_PER_CPU_AREA
33 config NEED_PER_CPU_EMBED_FIRST_CHUNK
37 int "Number of virtual interrupt numbers"
41 This defines the number of virtual interrupt numbers the kernel
42 can manage. Virtual interrupt numbers are what you see in
43 /proc/interrupts. If you configure your system to have too few,
44 drivers will fail to load or worse - handle with care.
46 config STACKTRACE_SUPPORT
50 config HAVE_LATENCYTOP_SUPPORT
53 config TRACE_IRQFLAGS_SUPPORT
57 config LOCKDEP_SUPPORT
61 config RWSEM_GENERIC_SPINLOCK
64 config RWSEM_XCHGADD_ALGORITHM
68 config GENERIC_LOCKBREAK
71 depends on SMP && PREEMPT
73 config ARCH_HAS_ILOG2_U32
77 config ARCH_HAS_ILOG2_U64
81 config GENERIC_HWEIGHT
88 Generic GPIO API support
90 config ARCH_NO_VIRT_TO_BUS
97 select OF_EARLY_FLATTREE
98 select HAVE_FTRACE_MCOUNT_RECORD
99 select HAVE_DYNAMIC_FTRACE
100 select HAVE_FUNCTION_TRACER
101 select HAVE_FUNCTION_GRAPH_TRACER
102 select SYSCTL_EXCEPTION_TRACE
103 select ARCH_WANT_OPTIONAL_GPIOLIB
105 select HAVE_IOREMAP_PROT
106 select HAVE_EFFICIENT_UNALIGNED_ACCESS
108 select HAVE_ARCH_KGDB
109 select HAVE_KRETPROBES
110 select HAVE_ARCH_TRACEHOOK
112 select HAVE_MEMBLOCK_NODE_MAP
113 select HAVE_DMA_ATTRS
114 select HAVE_DMA_API_DEBUG
115 select USE_GENERIC_SMP_HELPERS if SMP
117 select HAVE_DEBUG_KMEMLEAK
118 select HAVE_SYSCALL_WRAPPERS if PPC64
119 select GENERIC_ATOMIC64 if PPC32
120 select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
122 select HAVE_PERF_EVENTS
123 select HAVE_REGS_AND_STACK_ACCESS_API
124 select HAVE_HW_BREAKPOINT if PERF_EVENTS && PPC_BOOK3S_64
125 select HAVE_GENERIC_HARDIRQS
126 select ARCH_WANT_IPC_PARSE_VERSION
130 select GENERIC_IRQ_SHOW
131 select GENERIC_IRQ_SHOW_LEVEL
132 select IRQ_FORCED_THREADING
133 select HAVE_RCU_TABLE_FREE if SMP
134 select HAVE_SYSCALL_TRACEPOINTS
135 select HAVE_BPF_JIT if PPC64
136 select HAVE_ARCH_JUMP_LABEL
137 select ARCH_HAVE_NMI_SAFE_CMPXCHG
138 select GENERIC_SMP_IDLE_THREAD
139 select GENERIC_CMOS_UPDATE
140 select GENERIC_TIME_VSYSCALL_OLD
141 select GENERIC_CLOCKEVENTS
142 select GENERIC_STRNCPY_FROM_USER
143 select GENERIC_STRNLEN_USER
144 select GENERIC_KERNEL_THREAD
145 select HAVE_MOD_ARCH_SPECIFIC
146 select MODULES_USE_ELF_RELA
147 select GENERIC_KERNEL_EXECVE
148 select CLONE_BACKWARDS
157 select COMPAT_BINFMT_ELF
158 select ARCH_WANT_OLD_COMPAT_IPC
160 config SYSVIPC_COMPAT
162 depends on COMPAT && SYSVIPC
165 # All PPC32s use generic nvram driver through ppc_md
170 config SCHED_OMIT_FRAME_POINTER
174 config ARCH_MAY_HAVE_PC_FDC
176 default !PPC_PSERIES || PCI
181 config PPC_UDBG_16550
185 config GENERIC_TBSYNC
187 default y if PPC32 && SMP
199 config SYS_SUPPORTS_APM_EMULATION
200 default y if PMAC_APM_EMU
206 Used to allow a board to specify it wants an ePAPR compliant wrapper.
209 config DEFAULT_UIMAGE
212 Used to allow a board to specify it wants a uImage built by default
218 config ARCH_HIBERNATION_POSSIBLE
222 config ARCH_SUSPEND_POSSIBLE
224 depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx || \
225 (PPC_85xx && !PPC_E500MC) || PPC_86xx || PPC_PSERIES \
228 config PPC_DCR_NATIVE
238 depends on PPC_DCR_NATIVE || PPC_DCR_MMIO
241 config PPC_OF_PLATFORM_PCI
244 depends on PPC64 # not supported on 32 bits yet
247 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
250 config ARCH_SUPPORTS_UPROBES
253 config PPC_ADV_DEBUG_REGS
255 depends on 40x || BOOKE
258 config PPC_ADV_DEBUG_IACS
260 depends on PPC_ADV_DEBUG_REGS
264 config PPC_ADV_DEBUG_DACS
266 depends on PPC_ADV_DEBUG_REGS
269 config PPC_ADV_DEBUG_DVCS
271 depends on PPC_ADV_DEBUG_REGS
275 config PPC_ADV_DEBUG_DAC_RANGE
277 depends on PPC_ADV_DEBUG_REGS && 44x
280 source "init/Kconfig"
282 source "kernel/Kconfig.freezer"
284 source "arch/powerpc/sysdev/Kconfig"
285 source "arch/powerpc/platforms/Kconfig"
287 menu "Kernel options"
290 bool "High memory support"
293 source kernel/Kconfig.hz
294 source kernel/Kconfig.preempt
295 source "fs/Kconfig.binfmt"
297 config HUGETLB_PAGE_SIZE_VARIABLE
299 depends on HUGETLB_PAGE
302 config MATH_EMULATION
303 bool "Math emulation"
304 depends on 4xx || 8xx || E200 || PPC_MPC832x || E500
306 Some PowerPC chips designed for embedded applications do not have
307 a floating-point unit and therefore do not implement the
308 floating-point instructions in the PowerPC instruction set. If you
309 say Y here, the kernel will include code to emulate a floating-point
310 unit, which will allow programs that use floating-point
313 config 8XX_MINIMAL_FPEMU
314 bool "Minimal math emulation for 8xx"
315 depends on 8xx && !MATH_EMULATION
317 Older arch/ppc kernels still emulated a few floating point
318 instructions such as load and store, even when full math
319 emulation is disabled. Say "Y" here if you want to preserve
322 It is recommended that you build a soft-float userspace instead.
328 bool "SWIOTLB support"
332 Support for IO bounce buffering for systems without an IOMMU.
333 This allows us to DMA to the full physical address space on
334 platforms where the size of a physical address is larger
335 than the bus address. Not all platforms support this.
338 bool "Support for enabling/disabling CPUs"
339 depends on SMP && HOTPLUG && EXPERIMENTAL && (PPC_PSERIES || \
340 PPC_PMAC || PPC_POWERNV || (PPC_85xx && !PPC_E500MC))
342 Say Y here to be able to disable and re-enable individual
343 CPUs at runtime on SMP machines.
345 Say N if you are unsure.
347 config ARCH_CPU_PROBE_RELEASE
349 depends on HOTPLUG_CPU
351 config ARCH_ENABLE_MEMORY_HOTPLUG
354 config ARCH_HAS_WALK_MEMORY
357 config ARCH_ENABLE_MEMORY_HOTREMOVE
361 bool "kexec system call (EXPERIMENTAL)"
362 depends on (PPC_BOOK3S || FSL_BOOKE || (44x && !SMP)) && EXPERIMENTAL
364 kexec is a system call that implements the ability to shutdown your
365 current kernel, and to start another kernel. It is like a reboot
366 but it is independent of the system firmware. And like a reboot
367 you can start any kernel with it, not just Linux.
369 The name comes from the similarity to the exec system call.
371 It is an ongoing process to be certain the hardware in a machine
372 is properly shutdown, so do not be surprised if this code does not
373 initially work for you. It may help to enable device hotplugging
374 support. As of this writing the exact hardware interface is
375 strongly in flux, so no good recommendation can be made.
378 bool "Build a kdump crash kernel"
379 depends on PPC64 || 6xx || FSL_BOOKE || (44x && !SMP)
380 select RELOCATABLE if PPC64 || 44x
381 select DYNAMIC_MEMSTART if FSL_BOOKE
383 Build a kernel suitable for use as a kdump capture kernel.
384 The same kernel binary can be used as production kernel and dump
388 bool "Firmware-assisted dump"
389 depends on PPC64 && PPC_RTAS && CRASH_DUMP
391 A robust mechanism to get reliable kernel crash dump with
392 assistance from firmware. This approach does not use kexec,
393 instead firmware assists in booting the kdump kernel
394 while preserving memory contents. Firmware-assisted dump
395 is meant to be a kdump replacement offering robustness and
396 speed not possible without system firmware assistance.
401 bool "Distribute interrupts on all CPUs by default"
402 depends on SMP && !MV64360
404 This option gives the kernel permission to distribute IRQs across
405 multiple CPUs. Saying N here will route all IRQs to the first
406 CPU. Generally saying Y is safe, although some problems have been
407 reported with SMP Power Macintoshes with this option enabled.
412 default y if SMP && PPC_PSERIES
418 depends on NEED_MULTIPLE_NODES
420 config MAX_ACTIVE_REGIONS
422 default "256" if PPC64
425 config ARCH_SELECT_MEMORY_MODEL
429 config ARCH_FLATMEM_ENABLE
431 depends on (PPC64 && !NUMA) || PPC32
433 config ARCH_SPARSEMEM_ENABLE
436 select SPARSEMEM_VMEMMAP_ENABLE
438 config ARCH_SPARSEMEM_DEFAULT
440 depends on (SMP && PPC_PSERIES) || PPC_PS3
442 config SYS_SUPPORTS_HUGETLBFS
447 config ARCH_MEMORY_PROBE
449 depends on MEMORY_HOTPLUG
451 # Some NUMA nodes have memory ranges that span
452 # other nodes. Even though a pfn is valid and
453 # between a node's start and end pfns, it may not
454 # reside on that node. See memmap_init_zone()
456 config NODES_SPAN_OTHER_NODES
458 depends on NEED_MULTIPLE_NODES
460 config PPC_HAS_HASH_64K
466 bool "Using standard binutils settings"
470 Turning this option off allows you to select 256KB PAGE_SIZE on 44x.
471 Note, that kernel will be able to run only those applications,
472 which had been compiled using binutils later than 2.17.50.0.3 with
473 '-zmax-page-size' set to 256K (the default is 64K). Or, if using
474 the older binutils, you can patch them with a trivial patch, which
475 changes the ELF_MAXPAGESIZE definition from 0x10000 to 0x40000.
481 Select the kernel logical page size. Increasing the page size
482 will reduce software overhead at each page boundary, allow
483 hardware prefetch mechanisms to be more effective, and allow
484 larger dma transfers increasing IO efficiency and reducing
485 overhead. However the utilization of memory will increase.
486 For example, each cached file will using a multiple of the
487 page size to hold its contents and the difference between the
488 end of file and the end of page is wasted.
490 Some dedicated systems, such as software raid serving with
491 accelerated calculations, have shown significant increases.
493 If you configure a 64 bit kernel for 64k pages but the
494 processor does not support them, then the kernel will simulate
495 them with 4k pages, loading them on demand, but with the
496 reduced software overhead and larger internal fragmentation.
497 For the 32 bit kernel, a large page option will not be offered
498 unless it is supported by the configured processor.
500 If unsure, choose 4K_PAGES.
506 bool "16k page size" if 44x
509 bool "64k page size" if 44x || PPC_STD_MMU_64 || PPC_BOOK3E_64
510 select PPC_HAS_HASH_64K if PPC_STD_MMU_64
512 config PPC_256K_PAGES
513 bool "256k page size" if 44x
514 depends on !STDBINUTILS
516 Make the page size 256k.
518 As the ELF standard only requires alignment to support page
519 sizes up to 64k, you will need to compile all of your user
520 space applications with a non-standard binutils settings
521 (see the STDBINUTILS description for details).
523 Say N unless you know what you are doing.
527 config FORCE_MAX_ZONEORDER
528 int "Maximum zone order"
529 range 9 64 if PPC64 && PPC_64K_PAGES
530 default "9" if PPC64 && PPC_64K_PAGES
531 range 13 64 if PPC64 && !PPC_64K_PAGES
532 default "13" if PPC64 && !PPC_64K_PAGES
533 range 9 64 if PPC32 && PPC_16K_PAGES
534 default "9" if PPC32 && PPC_16K_PAGES
535 range 7 64 if PPC32 && PPC_64K_PAGES
536 default "7" if PPC32 && PPC_64K_PAGES
537 range 5 64 if PPC32 && PPC_256K_PAGES
538 default "5" if PPC32 && PPC_256K_PAGES
542 The kernel memory allocator divides physically contiguous memory
543 blocks into "zones", where each zone is a power of two number of
544 pages. This option selects the largest power of two that the kernel
545 keeps in the memory allocator. If you need to allocate very large
546 blocks of physically contiguous memory, then you may need to
549 This config option is actually maximum order plus one. For example,
550 a value of 11 means that the largest free memory block is 2^10 pages.
552 The page size is not necessarily 4KB. For example, on 64-bit
553 systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES. Keep
554 this in mind when choosing a value for this option.
556 config PPC_SUBPAGE_PROT
557 bool "Support setting protections for 4k subpages"
558 depends on PPC_STD_MMU_64 && PPC_64K_PAGES
560 This option adds support for a system call to allow user programs
561 to set access permissions (read/write, readonly, or no access)
562 on the 4k subpages of each 64k page.
565 bool "SMT (Hyperthreading) scheduler support"
566 depends on PPC64 && SMP
568 SMT scheduler support improves the CPU scheduler's decision making
569 when dealing with POWER5 cpus at a cost of slightly increased
570 overhead in some places. If unsure say N here.
572 config PPC_DENORMALISATION
573 bool "PowerPC denormalisation exception handling"
574 depends on PPC_BOOK3S_64
577 Add support for handling denormalisation of single precision
578 values. Useful for bare metal only. If unsure say Y here.
581 bool "Default bootloader kernel arguments"
584 string "Initial kernel command string"
585 depends on CMDLINE_BOOL
586 default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
588 On some platforms, there is currently no way for the boot loader to
589 pass arguments to the kernel. For these platforms, you can supply
590 some command-line options at build time by entering them here. In
591 most cases you will need to specify the root device here.
594 string "Additional default image types"
596 List additional targets to be built by the bootwrapper here (separated
597 by spaces). This is useful for targets that depend of device tree
598 files in the .dts directory.
600 Targets in this list will be build as part of the default build
601 target, or when the user does a 'make zImage' or a
602 'make zImage.initrd'.
604 If unsure, leave blank
606 config ARCH_WANTS_FREEZER_CONTROL
610 source kernel/power/Kconfig
613 bool "Enable seccomp to safely compute untrusted bytecode"
617 This kernel feature is useful for number crunching applications
618 that may need to compute untrusted bytecode during their
619 execution. By using pipes or other transports made available to
620 the process as file descriptors supporting the read/write
621 syscalls, it's possible to isolate those applications in
622 their own address space using seccomp. Once seccomp is
623 enabled via /proc/<pid>/seccomp, it cannot be disabled
624 and the task is only allowed to execute a few safe syscalls
625 defined by each seccomp mode.
627 If unsure, say Y. Only embedded should say N here.
638 bool "Support for ISA-bus hardware"
639 depends on PPC_PREP || PPC_CHRP
642 Find out whether you have ISA slots on your motherboard. ISA is the
643 name of a bus system, i.e. the way the CPU talks to the other stuff
644 inside your box. If you have an Apple machine, say N here; if you
645 have an IBM RS/6000 or pSeries machine or a PReP machine, say Y. If
646 you have an embedded board, consult your board documentation.
652 config NEED_DMA_MAP_STATE
653 def_bool (PPC64 || NOT_COHERENT_CACHE)
655 config NEED_SG_DMA_LENGTH
658 config GENERIC_ISA_DMA
660 depends on ISA_DMA_API
663 config PPC_INDIRECT_PCI
666 default y if 40x || 44x
677 select HAVE_CAN_FLEXCAN if NET && CAN
682 select PPC_INDIRECT_PCI
688 depends on SUSPEND && (PPC_85xx || PPC_86xx)
690 Freescale MPC85xx/MPC86xx power management controller support
691 (suspend/resume). For MPC83xx see platforms/83xx/suspend.c
696 depends on SUSPEND && (44x || 40x)
698 PPC4xx Clock Power Management (CPM) support (suspend/resume).
699 It also enables support for two different idle states (idle-wait
706 bool "Freescale Local Bus support"
709 Enables reporting of errors from the Freescale local bus
710 controller. Also contains some common code used by
711 drivers for specific local bus peripherals.
719 depends on PPC_83xx || QUICC_ENGINE || CPM2
721 Freescale General-purpose Timers support
723 # Yes MCA RS/6000s exist but Linux-PPC does not currently support any
727 # Platforms that what PCI turned unconditionally just do select PCI
728 # in their config node. Platforms that want to choose at config
729 # time should select PPC_PCI_CHOICE
730 config PPC_PCI_CHOICE
734 bool "PCI support" if PPC_PCI_CHOICE
735 default y if !40x && !CPM2 && !8xx && !PPC_83xx \
736 && !PPC_85xx && !PPC_86xx && !GAMECUBE_COMMON
737 default PCI_PERMEDIA if !4xx && !CPM2 && !8xx
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
768 bool "Enable workaround for MPC826x erratum PCI 9"
769 depends on PCI_8260 && !8272
772 source "drivers/pci/pcie/Kconfig"
774 source "drivers/pci/Kconfig"
776 source "drivers/pcmcia/Kconfig"
778 source "drivers/pci/hotplug/Kconfig"
785 bool "RapidIO support"
786 depends on HAS_RAPIDIO || PCI
788 If you say Y here, the kernel will include drivers and
789 infrastructure code to support RapidIO interconnect devices.
792 bool "Freescale Embedded SRIO Controller support"
793 depends on RAPIDIO && HAS_RAPIDIO
796 Include support for RapidIO controller on Freescale embedded
797 processors (MPC8548, MPC8641, etc).
799 source "drivers/rapidio/Kconfig"
803 config NONSTATIC_KERNEL
807 menu "Advanced setup"
810 config ADVANCED_OPTIONS
811 bool "Prompt for advanced kernel configuration options"
813 This option will enable prompting for a variety of advanced kernel
814 configuration options. These options can cause the kernel to not
815 work if they are set incorrectly, but can be used to optimize certain
816 aspects of kernel memory management.
818 Unless you know what you are doing, say N here.
820 comment "Default settings for advanced configuration options are used"
821 depends on !ADVANCED_OPTIONS
823 config LOWMEM_SIZE_BOOL
824 bool "Set maximum low memory"
825 depends on ADVANCED_OPTIONS
827 This option allows you to set the maximum amount of memory which
828 will be used as "low memory", that is, memory which the kernel can
829 access directly, without having to set up a kernel virtual mapping.
830 This can be useful in optimizing the layout of kernel virtual
833 Say N here unless you know what you are doing.
836 hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
839 config LOWMEM_CAM_NUM_BOOL
840 bool "Set number of CAMs to use to map low memory"
841 depends on ADVANCED_OPTIONS && FSL_BOOKE
843 This option allows you to set the maximum number of CAM slots that
844 will be used to map low memory. There are a limited number of slots
845 available and even more limited number that will fit in the L1 MMU.
846 However, using more entries will allow mapping more low memory. This
847 can be useful in optimizing the layout of kernel virtual memory.
849 Say N here unless you know what you are doing.
851 config LOWMEM_CAM_NUM
853 int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL
856 config DYNAMIC_MEMSTART
857 bool "Enable page aligned dynamic load address for kernel (EXPERIMENTAL)"
858 depends on EXPERIMENTAL && ADVANCED_OPTIONS && FLATMEM && (FSL_BOOKE || 44x)
859 select NONSTATIC_KERNEL
861 This option enables the kernel to be loaded at any page aligned
862 physical address. The kernel creates a mapping from KERNELBASE to
863 the address where the kernel is loaded. The page size here implies
864 the TLB page size of the mapping for kernel on the particular platform.
865 Please refer to the init code for finding the TLB page size.
867 DYNAMIC_MEMSTART is an easy way of implementing pseudo-RELOCATABLE
868 kernel image, where the only restriction is the page aligned kernel
869 load address. When this option is enabled, the compile time physical
870 address CONFIG_PHYSICAL_START is ignored.
872 This option is overridden by CONFIG_RELOCATABLE
875 bool "Build a relocatable kernel (EXPERIMENTAL)"
876 depends on EXPERIMENTAL && ADVANCED_OPTIONS && FLATMEM && 44x
877 select NONSTATIC_KERNEL
879 This builds a kernel image that is capable of running at the
880 location the kernel is loaded at, without any alignment restrictions.
881 This feature is a superset of DYNAMIC_MEMSTART and hence overrides it.
883 One use is for the kexec on panic case where the recovery kernel
884 must live at a different physical address than the primary
887 Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address
888 it has been loaded at and the compile time physical addresses
889 CONFIG_PHYSICAL_START is ignored. However CONFIG_PHYSICAL_START
890 setting can still be useful to bootwrappers that need to know the
891 load address of the kernel (eg. u-boot/mkimage).
893 config RELOCATABLE_PPC32
895 depends on PPC32 && RELOCATABLE
897 config PAGE_OFFSET_BOOL
898 bool "Set custom page offset address"
899 depends on ADVANCED_OPTIONS
901 This option allows you to set the kernel virtual address at which
902 the kernel will map low memory. This can be useful in optimizing
903 the virtual memory layout of the system.
905 Say N here unless you know what you are doing.
908 hex "Virtual address of memory base" if PAGE_OFFSET_BOOL
911 config KERNEL_START_BOOL
912 bool "Set custom kernel base address"
913 depends on ADVANCED_OPTIONS
915 This option allows you to set the kernel virtual address at which
916 the kernel will be loaded. Normally this should match PAGE_OFFSET
917 however there are times (like kdump) that one might not want them
920 Say N here unless you know what you are doing.
923 hex "Virtual address of kernel base" if KERNEL_START_BOOL
924 default PAGE_OFFSET if PAGE_OFFSET_BOOL
925 default "0xc2000000" if CRASH_DUMP && !NONSTATIC_KERNEL
928 config PHYSICAL_START_BOOL
929 bool "Set physical address where the kernel is loaded"
930 depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE
932 This gives the physical address where the kernel is loaded.
934 Say N here unless you know what you are doing.
936 config PHYSICAL_START
937 hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL
938 default "0x02000000" if PPC_STD_MMU && CRASH_DUMP && !NONSTATIC_KERNEL
941 config PHYSICAL_ALIGN
943 default "0x04000000" if FSL_BOOKE
945 This value puts the alignment restrictions on physical address
946 where kernel is loaded and run from. Kernel is compiled for an
947 address which meets above alignment restriction.
949 config TASK_SIZE_BOOL
950 bool "Set custom user task size"
951 depends on ADVANCED_OPTIONS
953 This option allows you to set the amount of virtual address space
954 allocated to user tasks. This can be useful in optimizing the
955 virtual memory layout of the system.
957 Say N here unless you know what you are doing.
960 hex "Size of user task space" if TASK_SIZE_BOOL
961 default "0x80000000" if PPC_PREP || PPC_8xx
964 config CONSISTENT_SIZE_BOOL
965 bool "Set custom consistent memory pool size"
966 depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
968 This option allows you to set the size of the
969 consistent memory pool. This pool of virtual memory
970 is used to make consistent memory allocations.
972 config CONSISTENT_SIZE
973 hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
974 default "0x00200000" if NOT_COHERENT_CACHE
977 bool "Pinned Kernel TLBs (860 ONLY)"
978 depends on ADVANCED_OPTIONS && 8xx
983 bool "Build a relocatable kernel"
984 select NONSTATIC_KERNEL
986 This builds a kernel image that is capable of running anywhere
987 in the RMA (real memory area) at any 16k-aligned base address.
988 The kernel is linked as a position-independent executable (PIE)
989 and contains dynamic relocations which are processed early
990 in the bootup process.
992 One use is for the kexec on panic case where the recovery kernel
993 must live at a different physical address than the primary
998 default "0xc000000000000000"
1001 default "0xc000000000000000"
1002 config PHYSICAL_START
1004 default "0x00000000"
1007 source "net/Kconfig"
1009 source "drivers/Kconfig"
1013 source "arch/powerpc/sysdev/qe_lib/Kconfig"
1015 source "lib/Kconfig"
1017 source "arch/powerpc/Kconfig.debug"
1019 source "security/Kconfig"
1023 depends on COMPAT && KEYS
1026 source "crypto/Kconfig"
1033 config PPC_LIB_RHEAP
1036 source "arch/powerpc/kvm/Kconfig"