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
145 select ARCH_USE_BUILTIN_BSWAP
146 select OLD_SIGSUSPEND
147 select OLD_SIGACTION if PPC32
156 select COMPAT_BINFMT_ELF
157 select ARCH_WANT_OLD_COMPAT_IPC
158 select COMPAT_OLD_SIGACTION
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 config PPC_EMULATE_SSTEP
282 default y if KPROBES || UPROBES || XMON || HAVE_HW_BREAKPOINT
284 source "init/Kconfig"
286 source "kernel/Kconfig.freezer"
288 source "arch/powerpc/sysdev/Kconfig"
289 source "arch/powerpc/platforms/Kconfig"
291 menu "Kernel options"
294 bool "High memory support"
297 source kernel/Kconfig.hz
298 source kernel/Kconfig.preempt
299 source "fs/Kconfig.binfmt"
301 config HUGETLB_PAGE_SIZE_VARIABLE
303 depends on HUGETLB_PAGE
306 config MATH_EMULATION
307 bool "Math emulation"
308 depends on 4xx || 8xx || E200 || PPC_MPC832x || E500
310 Some PowerPC chips designed for embedded applications do not have
311 a floating-point unit and therefore do not implement the
312 floating-point instructions in the PowerPC instruction set. If you
313 say Y here, the kernel will include code to emulate a floating-point
314 unit, which will allow programs that use floating-point
317 config PPC_TRANSACTIONAL_MEM
318 bool "Transactional Memory support for POWERPC"
319 depends on PPC_BOOK3S_64
323 Support user-mode Transactional Memory on POWERPC.
325 config 8XX_MINIMAL_FPEMU
326 bool "Minimal math emulation for 8xx"
327 depends on 8xx && !MATH_EMULATION
329 Older arch/ppc kernels still emulated a few floating point
330 instructions such as load and store, even when full math
331 emulation is disabled. Say "Y" here if you want to preserve
334 It is recommended that you build a soft-float userspace instead.
340 bool "SWIOTLB support"
344 Support for IO bounce buffering for systems without an IOMMU.
345 This allows us to DMA to the full physical address space on
346 platforms where the size of a physical address is larger
347 than the bus address. Not all platforms support this.
350 bool "Support for enabling/disabling CPUs"
351 depends on SMP && HOTPLUG && (PPC_PSERIES || \
352 PPC_PMAC || PPC_POWERNV || (PPC_85xx && !PPC_E500MC))
354 Say Y here to be able to disable and re-enable individual
355 CPUs at runtime on SMP machines.
357 Say N if you are unsure.
359 config ARCH_CPU_PROBE_RELEASE
361 depends on HOTPLUG_CPU
363 config ARCH_ENABLE_MEMORY_HOTPLUG
366 config ARCH_HAS_WALK_MEMORY
369 config ARCH_ENABLE_MEMORY_HOTREMOVE
373 bool "kexec system call"
374 depends on (PPC_BOOK3S || FSL_BOOKE || (44x && !SMP))
376 kexec is a system call that implements the ability to shutdown your
377 current kernel, and to start another kernel. It is like a reboot
378 but it is independent of the system firmware. And like a reboot
379 you can start any kernel with it, not just Linux.
381 The name comes from the similarity to the exec system call.
383 It is an ongoing process to be certain the hardware in a machine
384 is properly shutdown, so do not be surprised if this code does not
385 initially work for you. It may help to enable device hotplugging
386 support. As of this writing the exact hardware interface is
387 strongly in flux, so no good recommendation can be made.
390 bool "Build a kdump crash kernel"
391 depends on PPC64 || 6xx || FSL_BOOKE || (44x && !SMP)
392 select RELOCATABLE if PPC64 || 44x
393 select DYNAMIC_MEMSTART if FSL_BOOKE
395 Build a kernel suitable for use as a kdump capture kernel.
396 The same kernel binary can be used as production kernel and dump
400 bool "Firmware-assisted dump"
401 depends on PPC64 && PPC_RTAS && CRASH_DUMP
403 A robust mechanism to get reliable kernel crash dump with
404 assistance from firmware. This approach does not use kexec,
405 instead firmware assists in booting the kdump kernel
406 while preserving memory contents. Firmware-assisted dump
407 is meant to be a kdump replacement offering robustness and
408 speed not possible without system firmware assistance.
413 bool "Distribute interrupts on all CPUs by default"
414 depends on SMP && !MV64360
416 This option gives the kernel permission to distribute IRQs across
417 multiple CPUs. Saying N here will route all IRQs to the first
418 CPU. Generally saying Y is safe, although some problems have been
419 reported with SMP Power Macintoshes with this option enabled.
424 default y if SMP && PPC_PSERIES
430 depends on NEED_MULTIPLE_NODES
432 config MAX_ACTIVE_REGIONS
434 default "256" if PPC64
437 config ARCH_SELECT_MEMORY_MODEL
441 config ARCH_FLATMEM_ENABLE
443 depends on (PPC64 && !NUMA) || PPC32
445 config ARCH_SPARSEMEM_ENABLE
448 select SPARSEMEM_VMEMMAP_ENABLE
450 config ARCH_SPARSEMEM_DEFAULT
452 depends on (SMP && PPC_PSERIES) || PPC_PS3
454 config SYS_SUPPORTS_HUGETLBFS
459 config ARCH_MEMORY_PROBE
461 depends on MEMORY_HOTPLUG
463 # Some NUMA nodes have memory ranges that span
464 # other nodes. Even though a pfn is valid and
465 # between a node's start and end pfns, it may not
466 # reside on that node. See memmap_init_zone()
468 config NODES_SPAN_OTHER_NODES
470 depends on NEED_MULTIPLE_NODES
472 config PPC_HAS_HASH_64K
478 bool "Using standard binutils settings"
482 Turning this option off allows you to select 256KB PAGE_SIZE on 44x.
483 Note, that kernel will be able to run only those applications,
484 which had been compiled using binutils later than 2.17.50.0.3 with
485 '-zmax-page-size' set to 256K (the default is 64K). Or, if using
486 the older binutils, you can patch them with a trivial patch, which
487 changes the ELF_MAXPAGESIZE definition from 0x10000 to 0x40000.
493 Select the kernel logical page size. Increasing the page size
494 will reduce software overhead at each page boundary, allow
495 hardware prefetch mechanisms to be more effective, and allow
496 larger dma transfers increasing IO efficiency and reducing
497 overhead. However the utilization of memory will increase.
498 For example, each cached file will using a multiple of the
499 page size to hold its contents and the difference between the
500 end of file and the end of page is wasted.
502 Some dedicated systems, such as software raid serving with
503 accelerated calculations, have shown significant increases.
505 If you configure a 64 bit kernel for 64k pages but the
506 processor does not support them, then the kernel will simulate
507 them with 4k pages, loading them on demand, but with the
508 reduced software overhead and larger internal fragmentation.
509 For the 32 bit kernel, a large page option will not be offered
510 unless it is supported by the configured processor.
512 If unsure, choose 4K_PAGES.
518 bool "16k page size" if 44x
521 bool "64k page size" if 44x || PPC_STD_MMU_64 || PPC_BOOK3E_64
522 select PPC_HAS_HASH_64K if PPC_STD_MMU_64
524 config PPC_256K_PAGES
525 bool "256k page size" if 44x
526 depends on !STDBINUTILS
528 Make the page size 256k.
530 As the ELF standard only requires alignment to support page
531 sizes up to 64k, you will need to compile all of your user
532 space applications with a non-standard binutils settings
533 (see the STDBINUTILS description for details).
535 Say N unless you know what you are doing.
539 config FORCE_MAX_ZONEORDER
540 int "Maximum zone order"
541 range 9 64 if PPC64 && PPC_64K_PAGES
542 default "9" if PPC64 && PPC_64K_PAGES
543 range 13 64 if PPC64 && !PPC_64K_PAGES
544 default "13" if PPC64 && !PPC_64K_PAGES
545 range 9 64 if PPC32 && PPC_16K_PAGES
546 default "9" if PPC32 && PPC_16K_PAGES
547 range 7 64 if PPC32 && PPC_64K_PAGES
548 default "7" if PPC32 && PPC_64K_PAGES
549 range 5 64 if PPC32 && PPC_256K_PAGES
550 default "5" if PPC32 && PPC_256K_PAGES
554 The kernel memory allocator divides physically contiguous memory
555 blocks into "zones", where each zone is a power of two number of
556 pages. This option selects the largest power of two that the kernel
557 keeps in the memory allocator. If you need to allocate very large
558 blocks of physically contiguous memory, then you may need to
561 This config option is actually maximum order plus one. For example,
562 a value of 11 means that the largest free memory block is 2^10 pages.
564 The page size is not necessarily 4KB. For example, on 64-bit
565 systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES. Keep
566 this in mind when choosing a value for this option.
568 config PPC_SUBPAGE_PROT
569 bool "Support setting protections for 4k subpages"
570 depends on PPC_STD_MMU_64 && PPC_64K_PAGES
572 This option adds support for a system call to allow user programs
573 to set access permissions (read/write, readonly, or no access)
574 on the 4k subpages of each 64k page.
577 bool "SMT (Hyperthreading) scheduler support"
578 depends on PPC64 && SMP
580 SMT scheduler support improves the CPU scheduler's decision making
581 when dealing with POWER5 cpus at a cost of slightly increased
582 overhead in some places. If unsure say N here.
584 config PPC_DENORMALISATION
585 bool "PowerPC denormalisation exception handling"
586 depends on PPC_BOOK3S_64
589 Add support for handling denormalisation of single precision
590 values. Useful for bare metal only. If unsure say Y here.
593 bool "Default bootloader kernel arguments"
596 string "Initial kernel command string"
597 depends on CMDLINE_BOOL
598 default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
600 On some platforms, there is currently no way for the boot loader to
601 pass arguments to the kernel. For these platforms, you can supply
602 some command-line options at build time by entering them here. In
603 most cases you will need to specify the root device here.
606 string "Additional default image types"
608 List additional targets to be built by the bootwrapper here (separated
609 by spaces). This is useful for targets that depend of device tree
610 files in the .dts directory.
612 Targets in this list will be build as part of the default build
613 target, or when the user does a 'make zImage' or a
614 'make zImage.initrd'.
616 If unsure, leave blank
618 config ARCH_WANTS_FREEZER_CONTROL
622 source kernel/power/Kconfig
625 bool "Enable seccomp to safely compute untrusted bytecode"
629 This kernel feature is useful for number crunching applications
630 that may need to compute untrusted bytecode during their
631 execution. By using pipes or other transports made available to
632 the process as file descriptors supporting the read/write
633 syscalls, it's possible to isolate those applications in
634 their own address space using seccomp. Once seccomp is
635 enabled via /proc/<pid>/seccomp, it cannot be disabled
636 and the task is only allowed to execute a few safe syscalls
637 defined by each seccomp mode.
639 If unsure, say Y. Only embedded should say N here.
650 bool "Support for ISA-bus hardware"
651 depends on PPC_PREP || PPC_CHRP
654 Find out whether you have ISA slots on your motherboard. ISA is the
655 name of a bus system, i.e. the way the CPU talks to the other stuff
656 inside your box. If you have an Apple machine, say N here; if you
657 have an IBM RS/6000 or pSeries machine or a PReP machine, say Y. If
658 you have an embedded board, consult your board documentation.
664 config NEED_DMA_MAP_STATE
665 def_bool (PPC64 || NOT_COHERENT_CACHE)
667 config NEED_SG_DMA_LENGTH
670 config GENERIC_ISA_DMA
672 depends on ISA_DMA_API
675 config PPC_INDIRECT_PCI
678 default y if 40x || 44x
689 select HAVE_CAN_FLEXCAN if NET && CAN
694 select PPC_INDIRECT_PCI
700 depends on SUSPEND && (PPC_85xx || PPC_86xx)
702 Freescale MPC85xx/MPC86xx power management controller support
703 (suspend/resume). For MPC83xx see platforms/83xx/suspend.c
708 depends on SUSPEND && (44x || 40x)
710 PPC4xx Clock Power Management (CPM) support (suspend/resume).
711 It also enables support for two different idle states (idle-wait
718 bool "Freescale Local Bus support"
721 Enables reporting of errors from the Freescale local bus
722 controller. Also contains some common code used by
723 drivers for specific local bus peripherals.
731 depends on PPC_83xx || QUICC_ENGINE || CPM2
733 Freescale General-purpose Timers support
735 # Yes MCA RS/6000s exist but Linux-PPC does not currently support any
739 # Platforms that what PCI turned unconditionally just do select PCI
740 # in their config node. Platforms that want to choose at config
741 # time should select PPC_PCI_CHOICE
742 config PPC_PCI_CHOICE
746 bool "PCI support" if PPC_PCI_CHOICE
747 default y if !40x && !CPM2 && !8xx && !PPC_83xx \
748 && !PPC_85xx && !PPC_86xx && !GAMECUBE_COMMON
749 default PCI_PERMEDIA if !4xx && !CPM2 && !8xx
750 default PCI_QSPAN if !4xx && !CPM2 && 8xx
751 select ARCH_SUPPORTS_MSI
752 select GENERIC_PCI_IOMAP
754 Find out whether your system includes a PCI bus. PCI is the name of
755 a bus system, i.e. the way the CPU talks to the other stuff inside
756 your box. If you say Y here, the kernel will include drivers and
757 infrastructure code to support PCI bus devices.
767 depends on !4xx && !CPM2 && 8xx
770 Say Y here if you have a system based on a Motorola 8xx-series
771 embedded processor with a QSPAN PCI interface, otherwise say N.
775 depends on PCI && 8260
776 select PPC_INDIRECT_PCI
780 bool "Enable workaround for MPC826x erratum PCI 9"
781 depends on PCI_8260 && !8272
784 source "drivers/pci/pcie/Kconfig"
786 source "drivers/pci/Kconfig"
788 source "drivers/pcmcia/Kconfig"
790 source "drivers/pci/hotplug/Kconfig"
797 bool "RapidIO support"
798 depends on HAS_RAPIDIO || PCI
800 If you say Y here, the kernel will include drivers and
801 infrastructure code to support RapidIO interconnect devices.
804 bool "Freescale Embedded SRIO Controller support"
805 depends on RAPIDIO && HAS_RAPIDIO
808 Include support for RapidIO controller on Freescale embedded
809 processors (MPC8548, MPC8641, etc).
811 source "drivers/rapidio/Kconfig"
815 config NONSTATIC_KERNEL
819 menu "Advanced setup"
822 config ADVANCED_OPTIONS
823 bool "Prompt for advanced kernel configuration options"
825 This option will enable prompting for a variety of advanced kernel
826 configuration options. These options can cause the kernel to not
827 work if they are set incorrectly, but can be used to optimize certain
828 aspects of kernel memory management.
830 Unless you know what you are doing, say N here.
832 comment "Default settings for advanced configuration options are used"
833 depends on !ADVANCED_OPTIONS
835 config LOWMEM_SIZE_BOOL
836 bool "Set maximum low memory"
837 depends on ADVANCED_OPTIONS
839 This option allows you to set the maximum amount of memory which
840 will be used as "low memory", that is, memory which the kernel can
841 access directly, without having to set up a kernel virtual mapping.
842 This can be useful in optimizing the layout of kernel virtual
845 Say N here unless you know what you are doing.
848 hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
851 config LOWMEM_CAM_NUM_BOOL
852 bool "Set number of CAMs to use to map low memory"
853 depends on ADVANCED_OPTIONS && FSL_BOOKE
855 This option allows you to set the maximum number of CAM slots that
856 will be used to map low memory. There are a limited number of slots
857 available and even more limited number that will fit in the L1 MMU.
858 However, using more entries will allow mapping more low memory. This
859 can be useful in optimizing the layout of kernel virtual memory.
861 Say N here unless you know what you are doing.
863 config LOWMEM_CAM_NUM
865 int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL
868 config DYNAMIC_MEMSTART
869 bool "Enable page aligned dynamic load address for kernel"
870 depends on ADVANCED_OPTIONS && FLATMEM && (FSL_BOOKE || 44x)
871 select NONSTATIC_KERNEL
873 This option enables the kernel to be loaded at any page aligned
874 physical address. The kernel creates a mapping from KERNELBASE to
875 the address where the kernel is loaded. The page size here implies
876 the TLB page size of the mapping for kernel on the particular platform.
877 Please refer to the init code for finding the TLB page size.
879 DYNAMIC_MEMSTART is an easy way of implementing pseudo-RELOCATABLE
880 kernel image, where the only restriction is the page aligned kernel
881 load address. When this option is enabled, the compile time physical
882 address CONFIG_PHYSICAL_START is ignored.
884 This option is overridden by CONFIG_RELOCATABLE
887 bool "Build a relocatable kernel"
888 depends on ADVANCED_OPTIONS && FLATMEM && 44x
889 select NONSTATIC_KERNEL
891 This builds a kernel image that is capable of running at the
892 location the kernel is loaded at, without any alignment restrictions.
893 This feature is a superset of DYNAMIC_MEMSTART and hence overrides it.
895 One use is for the kexec on panic case where the recovery kernel
896 must live at a different physical address than the primary
899 Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address
900 it has been loaded at and the compile time physical addresses
901 CONFIG_PHYSICAL_START is ignored. However CONFIG_PHYSICAL_START
902 setting can still be useful to bootwrappers that need to know the
903 load address of the kernel (eg. u-boot/mkimage).
905 config RELOCATABLE_PPC32
907 depends on PPC32 && RELOCATABLE
909 config PAGE_OFFSET_BOOL
910 bool "Set custom page offset address"
911 depends on ADVANCED_OPTIONS
913 This option allows you to set the kernel virtual address at which
914 the kernel will map low memory. This can be useful in optimizing
915 the virtual memory layout of the system.
917 Say N here unless you know what you are doing.
920 hex "Virtual address of memory base" if PAGE_OFFSET_BOOL
923 config KERNEL_START_BOOL
924 bool "Set custom kernel base address"
925 depends on ADVANCED_OPTIONS
927 This option allows you to set the kernel virtual address at which
928 the kernel will be loaded. Normally this should match PAGE_OFFSET
929 however there are times (like kdump) that one might not want them
932 Say N here unless you know what you are doing.
935 hex "Virtual address of kernel base" if KERNEL_START_BOOL
936 default PAGE_OFFSET if PAGE_OFFSET_BOOL
937 default "0xc2000000" if CRASH_DUMP && !NONSTATIC_KERNEL
940 config PHYSICAL_START_BOOL
941 bool "Set physical address where the kernel is loaded"
942 depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE
944 This gives the physical address where the kernel is loaded.
946 Say N here unless you know what you are doing.
948 config PHYSICAL_START
949 hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL
950 default "0x02000000" if PPC_STD_MMU && CRASH_DUMP && !NONSTATIC_KERNEL
953 config PHYSICAL_ALIGN
955 default "0x04000000" if FSL_BOOKE
957 This value puts the alignment restrictions on physical address
958 where kernel is loaded and run from. Kernel is compiled for an
959 address which meets above alignment restriction.
961 config TASK_SIZE_BOOL
962 bool "Set custom user task size"
963 depends on ADVANCED_OPTIONS
965 This option allows you to set the amount of virtual address space
966 allocated to user tasks. This can be useful in optimizing the
967 virtual memory layout of the system.
969 Say N here unless you know what you are doing.
972 hex "Size of user task space" if TASK_SIZE_BOOL
973 default "0x80000000" if PPC_PREP || PPC_8xx
976 config CONSISTENT_SIZE_BOOL
977 bool "Set custom consistent memory pool size"
978 depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
980 This option allows you to set the size of the
981 consistent memory pool. This pool of virtual memory
982 is used to make consistent memory allocations.
984 config CONSISTENT_SIZE
985 hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
986 default "0x00200000" if NOT_COHERENT_CACHE
989 bool "Pinned Kernel TLBs (860 ONLY)"
990 depends on ADVANCED_OPTIONS && 8xx
995 bool "Build a relocatable kernel"
996 select NONSTATIC_KERNEL
998 This builds a kernel image that is capable of running anywhere
999 in the RMA (real memory area) at any 16k-aligned base address.
1000 The kernel is linked as a position-independent executable (PIE)
1001 and contains dynamic relocations which are processed early
1002 in the bootup process.
1004 One use is for the kexec on panic case where the recovery kernel
1005 must live at a different physical address than the primary
1010 default "0xc000000000000000"
1013 default "0xc000000000000000"
1014 config PHYSICAL_START
1016 default "0x00000000"
1019 source "net/Kconfig"
1021 source "drivers/Kconfig"
1025 source "arch/powerpc/sysdev/qe_lib/Kconfig"
1027 source "lib/Kconfig"
1029 source "arch/powerpc/Kconfig.debug"
1031 source "security/Kconfig"
1035 depends on COMPAT && KEYS
1038 source "crypto/Kconfig"
1045 config PPC_LIB_RHEAP
1048 source "arch/powerpc/kvm/Kconfig"