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
141 select ARCH_SUPPORTS_ATOMIC_RMW
150 select COMPAT_BINFMT_ELF
151 select ARCH_WANT_OLD_COMPAT_IPC
152 select COMPAT_OLD_SIGACTION
154 config SYSVIPC_COMPAT
156 depends on COMPAT && SYSVIPC
159 # All PPC32s use generic nvram driver through ppc_md
164 config SCHED_OMIT_FRAME_POINTER
168 config ARCH_MAY_HAVE_PC_FDC
170 default !PPC_PSERIES || PCI
175 config PPC_UDBG_16550
179 config GENERIC_TBSYNC
181 default y if PPC32 && SMP
193 config SYS_SUPPORTS_APM_EMULATION
194 default y if PMAC_APM_EMU
200 Used to allow a board to specify it wants an ePAPR compliant wrapper.
203 config DEFAULT_UIMAGE
206 Used to allow a board to specify it wants a uImage built by default
212 config ARCH_HIBERNATION_POSSIBLE
216 config ARCH_SUSPEND_POSSIBLE
218 depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx || \
219 (PPC_85xx && !PPC_E500MC) || PPC_86xx || PPC_PSERIES \
222 config PPC_DCR_NATIVE
232 depends on PPC_DCR_NATIVE || PPC_DCR_MMIO
235 config PPC_OF_PLATFORM_PCI
238 depends on PPC64 # not supported on 32 bits yet
241 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
244 config ARCH_SUPPORTS_UPROBES
247 config PPC_ADV_DEBUG_REGS
249 depends on 40x || BOOKE
252 config PPC_ADV_DEBUG_IACS
254 depends on PPC_ADV_DEBUG_REGS
258 config PPC_ADV_DEBUG_DACS
260 depends on PPC_ADV_DEBUG_REGS
263 config PPC_ADV_DEBUG_DVCS
265 depends on PPC_ADV_DEBUG_REGS
269 config PPC_ADV_DEBUG_DAC_RANGE
271 depends on PPC_ADV_DEBUG_REGS && 44x
274 config PPC_EMULATE_SSTEP
276 default y if KPROBES || UPROBES || XMON || HAVE_HW_BREAKPOINT
278 source "init/Kconfig"
280 source "kernel/Kconfig.freezer"
282 source "arch/powerpc/sysdev/Kconfig"
283 source "arch/powerpc/platforms/Kconfig"
285 menu "Kernel options"
288 bool "High memory support"
291 source kernel/Kconfig.hz
292 source kernel/Kconfig.preempt
293 source "fs/Kconfig.binfmt"
295 config HUGETLB_PAGE_SIZE_VARIABLE
297 depends on HUGETLB_PAGE
300 config MATH_EMULATION
301 bool "Math emulation"
302 depends on 4xx || 8xx || PPC_MPC832x || BOOKE
304 Some PowerPC chips designed for embedded applications do not have
305 a floating-point unit and therefore do not implement the
306 floating-point instructions in the PowerPC instruction set. If you
307 say Y here, the kernel will include code to emulate a floating-point
308 unit, which will allow programs that use floating-point
311 This is also useful to emulate missing (optional) instructions
312 such as fsqrt on cores that do have an FPU but do not implement
313 them (such as Freescale BookE).
316 prompt "Math emulation options"
317 default MATH_EMULATION_FULL
318 depends on MATH_EMULATION
320 config MATH_EMULATION_FULL
321 bool "Emulate all the floating point instructions"
323 Select this option will enable the kernel to support to emulate
324 all the floating point instructions. If your SoC doesn't have
325 a FPU, you should select this.
327 config MATH_EMULATION_HW_UNIMPLEMENTED
328 bool "Just emulate the FPU unimplemented instructions"
330 Select this if you know there does have a hardware FPU on your
331 SoC, but some floating point instructions are not implemented by that.
335 config PPC_TRANSACTIONAL_MEM
336 bool "Transactional Memory support for POWERPC"
337 depends on PPC_BOOK3S_64
341 Support user-mode Transactional Memory on POWERPC.
347 bool "SWIOTLB support"
351 Support for IO bounce buffering for systems without an IOMMU.
352 This allows us to DMA to the full physical address space on
353 platforms where the size of a physical address is larger
354 than the bus address. Not all platforms support this.
357 bool "Support for enabling/disabling CPUs"
358 depends on SMP && (PPC_PSERIES || \
359 PPC_PMAC || PPC_POWERNV || (PPC_85xx && !PPC_E500MC))
361 Say Y here to be able to disable and re-enable individual
362 CPUs at runtime on SMP machines.
364 Say N if you are unsure.
366 config ARCH_CPU_PROBE_RELEASE
368 depends on HOTPLUG_CPU
370 config ARCH_ENABLE_MEMORY_HOTPLUG
373 config ARCH_HAS_WALK_MEMORY
376 config ARCH_ENABLE_MEMORY_HOTREMOVE
380 bool "kexec system call"
381 depends on (PPC_BOOK3S || FSL_BOOKE || (44x && !SMP))
383 kexec is a system call that implements the ability to shutdown your
384 current kernel, and to start another kernel. It is like a reboot
385 but it is independent of the system firmware. And like a reboot
386 you can start any kernel with it, not just Linux.
388 The name comes from the similarity to the exec system call.
390 It is an ongoing process to be certain the hardware in a machine
391 is properly shutdown, so do not be surprised if this code does not
392 initially work for you. As of this writing the exact hardware
393 interface is strongly in flux, so no good recommendation can be
397 bool "Build a kdump crash kernel"
398 depends on PPC64 || 6xx || FSL_BOOKE || (44x && !SMP)
399 select RELOCATABLE if (PPC64 && !COMPILE_TEST) || 44x
400 select DYNAMIC_MEMSTART if FSL_BOOKE
402 Build a kernel suitable for use as a kdump capture kernel.
403 The same kernel binary can be used as production kernel and dump
407 bool "Firmware-assisted dump"
408 depends on PPC64 && PPC_RTAS && CRASH_DUMP
410 A robust mechanism to get reliable kernel crash dump with
411 assistance from firmware. This approach does not use kexec,
412 instead firmware assists in booting the kdump kernel
413 while preserving memory contents. Firmware-assisted dump
414 is meant to be a kdump replacement offering robustness and
415 speed not possible without system firmware assistance.
420 bool "Distribute interrupts on all CPUs by default"
421 depends on SMP && !MV64360
423 This option gives the kernel permission to distribute IRQs across
424 multiple CPUs. Saying N here will route all IRQs to the first
425 CPU. Generally saying Y is safe, although some problems have been
426 reported with SMP Power Macintoshes with this option enabled.
431 default y if SMP && PPC_PSERIES
437 depends on NEED_MULTIPLE_NODES
439 config ARCH_SELECT_MEMORY_MODEL
443 config ARCH_FLATMEM_ENABLE
445 depends on (PPC64 && !NUMA) || PPC32
447 config ARCH_SPARSEMEM_ENABLE
450 select SPARSEMEM_VMEMMAP_ENABLE
452 config ARCH_SPARSEMEM_DEFAULT
454 depends on (SMP && PPC_PSERIES) || PPC_PS3
456 config SYS_SUPPORTS_HUGETLBFS
461 config ARCH_MEMORY_PROBE
463 depends on MEMORY_HOTPLUG
465 # Some NUMA nodes have memory ranges that span
466 # other nodes. Even though a pfn is valid and
467 # between a node's start and end pfns, it may not
468 # reside on that node. See memmap_init_zone()
470 config NODES_SPAN_OTHER_NODES
472 depends on NEED_MULTIPLE_NODES
474 config PPC_HAS_HASH_64K
480 bool "Using standard binutils settings"
484 Turning this option off allows you to select 256KB PAGE_SIZE on 44x.
485 Note, that kernel will be able to run only those applications,
486 which had been compiled using binutils later than 2.17.50.0.3 with
487 '-zmax-page-size' set to 256K (the default is 64K). Or, if using
488 the older binutils, you can patch them with a trivial patch, which
489 changes the ELF_MAXPAGESIZE definition from 0x10000 to 0x40000.
495 Select the kernel logical page size. Increasing the page size
496 will reduce software overhead at each page boundary, allow
497 hardware prefetch mechanisms to be more effective, and allow
498 larger dma transfers increasing IO efficiency and reducing
499 overhead. However the utilization of memory will increase.
500 For example, each cached file will using a multiple of the
501 page size to hold its contents and the difference between the
502 end of file and the end of page is wasted.
504 Some dedicated systems, such as software raid serving with
505 accelerated calculations, have shown significant increases.
507 If you configure a 64 bit kernel for 64k pages but the
508 processor does not support them, then the kernel will simulate
509 them with 4k pages, loading them on demand, but with the
510 reduced software overhead and larger internal fragmentation.
511 For the 32 bit kernel, a large page option will not be offered
512 unless it is supported by the configured processor.
514 If unsure, choose 4K_PAGES.
520 bool "16k page size" if 44x
523 bool "64k page size" if 44x || PPC_STD_MMU_64 || PPC_BOOK3E_64
524 select PPC_HAS_HASH_64K if PPC_STD_MMU_64
526 config PPC_256K_PAGES
527 bool "256k page size" if 44x
528 depends on !STDBINUTILS
530 Make the page size 256k.
532 As the ELF standard only requires alignment to support page
533 sizes up to 64k, you will need to compile all of your user
534 space applications with a non-standard binutils settings
535 (see the STDBINUTILS description for details).
537 Say N unless you know what you are doing.
541 config FORCE_MAX_ZONEORDER
542 int "Maximum zone order"
543 range 9 64 if PPC64 && PPC_64K_PAGES
544 default "9" if PPC64 && PPC_64K_PAGES
545 range 13 64 if PPC64 && !PPC_64K_PAGES
546 default "13" if PPC64 && !PPC_64K_PAGES
547 range 9 64 if PPC32 && PPC_16K_PAGES
548 default "9" if PPC32 && PPC_16K_PAGES
549 range 7 64 if PPC32 && PPC_64K_PAGES
550 default "7" if PPC32 && PPC_64K_PAGES
551 range 5 64 if PPC32 && PPC_256K_PAGES
552 default "5" if PPC32 && PPC_256K_PAGES
556 The kernel memory allocator divides physically contiguous memory
557 blocks into "zones", where each zone is a power of two number of
558 pages. This option selects the largest power of two that the kernel
559 keeps in the memory allocator. If you need to allocate very large
560 blocks of physically contiguous memory, then you may need to
563 This config option is actually maximum order plus one. For example,
564 a value of 11 means that the largest free memory block is 2^10 pages.
566 The page size is not necessarily 4KB. For example, on 64-bit
567 systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES. Keep
568 this in mind when choosing a value for this option.
570 config PPC_SUBPAGE_PROT
571 bool "Support setting protections for 4k subpages"
572 depends on PPC_STD_MMU_64 && PPC_64K_PAGES
574 This option adds support for a system call to allow user programs
575 to set access permissions (read/write, readonly, or no access)
576 on the 4k subpages of each 64k page.
579 bool "SMT (Hyperthreading) scheduler support"
580 depends on PPC64 && SMP
582 SMT scheduler support improves the CPU scheduler's decision making
583 when dealing with POWER5 cpus at a cost of slightly increased
584 overhead in some places. If unsure say N here.
586 config PPC_DENORMALISATION
587 bool "PowerPC denormalisation exception handling"
588 depends on PPC_BOOK3S_64
589 default "y" if PPC_POWERNV
591 Add support for handling denormalisation of single precision
592 values. Useful for bare metal only. If unsure say Y here.
595 bool "Default bootloader kernel arguments"
598 string "Initial kernel command string"
599 depends on CMDLINE_BOOL
600 default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
602 On some platforms, there is currently no way for the boot loader to
603 pass arguments to the kernel. For these platforms, you can supply
604 some command-line options at build time by entering them here. In
605 most cases you will need to specify the root device here.
608 string "Additional default image types"
610 List additional targets to be built by the bootwrapper here (separated
611 by spaces). This is useful for targets that depend of device tree
612 files in the .dts directory.
614 Targets in this list will be build as part of the default build
615 target, or when the user does a 'make zImage' or a
616 'make zImage.initrd'.
618 If unsure, leave blank
620 config ARCH_WANTS_FREEZER_CONTROL
624 source kernel/power/Kconfig
627 bool "Enable seccomp to safely compute untrusted bytecode"
631 This kernel feature is useful for number crunching applications
632 that may need to compute untrusted bytecode during their
633 execution. By using pipes or other transports made available to
634 the process as file descriptors supporting the read/write
635 syscalls, it's possible to isolate those applications in
636 their own address space using seccomp. Once seccomp is
637 enabled via /proc/<pid>/seccomp, it cannot be disabled
638 and the task is only allowed to execute a few safe syscalls
639 defined by each seccomp mode.
641 If unsure, say Y. Only embedded should say N here.
652 bool "Support for ISA-bus hardware"
656 Find out whether you have ISA slots on your motherboard. ISA is the
657 name of a bus system, i.e. the way the CPU talks to the other stuff
658 inside your box. If you have an Apple machine, say N here; if you
659 have an IBM RS/6000 or pSeries machine, say Y. If you have an
660 embedded board, consult your board documentation.
666 config NEED_DMA_MAP_STATE
667 def_bool (PPC64 || NOT_COHERENT_CACHE)
669 config NEED_SG_DMA_LENGTH
672 config GENERIC_ISA_DMA
674 depends on ISA_DMA_API
677 config PPC_INDIRECT_PCI
680 default y if 40x || 44x
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_QSPAN if !4xx && !CPM2 && 8xx
750 select GENERIC_PCI_IOMAP
752 Find out whether your system includes a PCI bus. PCI is the name of
753 a bus system, i.e. the way the CPU talks to the other stuff inside
754 your box. If you say Y here, the kernel will include drivers and
755 infrastructure code to support PCI bus devices.
765 depends on !4xx && !CPM2 && 8xx
768 Say Y here if you have a system based on a Motorola 8xx-series
769 embedded processor with a QSPAN PCI interface, otherwise say N.
773 depends on PCI && 8260
774 select PPC_INDIRECT_PCI
777 source "drivers/pci/pcie/Kconfig"
779 source "drivers/pci/Kconfig"
781 source "drivers/pcmcia/Kconfig"
783 source "drivers/pci/hotplug/Kconfig"
790 bool "RapidIO support"
791 depends on HAS_RAPIDIO || PCI
793 If you say Y here, the kernel will include drivers and
794 infrastructure code to support RapidIO interconnect devices.
797 bool "Freescale Embedded SRIO Controller support"
798 depends on RAPIDIO && HAS_RAPIDIO
801 Include support for RapidIO controller on Freescale embedded
802 processors (MPC8548, MPC8641, etc).
804 source "drivers/rapidio/Kconfig"
808 config NONSTATIC_KERNEL
812 menu "Advanced setup"
815 config ADVANCED_OPTIONS
816 bool "Prompt for advanced kernel configuration options"
818 This option will enable prompting for a variety of advanced kernel
819 configuration options. These options can cause the kernel to not
820 work if they are set incorrectly, but can be used to optimize certain
821 aspects of kernel memory management.
823 Unless you know what you are doing, say N here.
825 comment "Default settings for advanced configuration options are used"
826 depends on !ADVANCED_OPTIONS
828 config LOWMEM_SIZE_BOOL
829 bool "Set maximum low memory"
830 depends on ADVANCED_OPTIONS
832 This option allows you to set the maximum amount of memory which
833 will be used as "low memory", that is, memory which the kernel can
834 access directly, without having to set up a kernel virtual mapping.
835 This can be useful in optimizing the layout of kernel virtual
838 Say N here unless you know what you are doing.
841 hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
844 config LOWMEM_CAM_NUM_BOOL
845 bool "Set number of CAMs to use to map low memory"
846 depends on ADVANCED_OPTIONS && FSL_BOOKE
848 This option allows you to set the maximum number of CAM slots that
849 will be used to map low memory. There are a limited number of slots
850 available and even more limited number that will fit in the L1 MMU.
851 However, using more entries will allow mapping more low memory. This
852 can be useful in optimizing the layout of kernel virtual memory.
854 Say N here unless you know what you are doing.
856 config LOWMEM_CAM_NUM
858 int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL
861 config DYNAMIC_MEMSTART
862 bool "Enable page aligned dynamic load address for kernel"
863 depends on ADVANCED_OPTIONS && FLATMEM && (FSL_BOOKE || 44x)
864 select NONSTATIC_KERNEL
866 This option enables the kernel to be loaded at any page aligned
867 physical address. The kernel creates a mapping from KERNELBASE to
868 the address where the kernel is loaded. The page size here implies
869 the TLB page size of the mapping for kernel on the particular platform.
870 Please refer to the init code for finding the TLB page size.
872 DYNAMIC_MEMSTART is an easy way of implementing pseudo-RELOCATABLE
873 kernel image, where the only restriction is the page aligned kernel
874 load address. When this option is enabled, the compile time physical
875 address CONFIG_PHYSICAL_START is ignored.
877 This option is overridden by CONFIG_RELOCATABLE
880 bool "Build a relocatable kernel"
881 depends on ADVANCED_OPTIONS && FLATMEM && 44x
882 select NONSTATIC_KERNEL
884 This builds a kernel image that is capable of running at the
885 location the kernel is loaded at, without any alignment restrictions.
886 This feature is a superset of DYNAMIC_MEMSTART and hence overrides it.
888 One use is for the kexec on panic case where the recovery kernel
889 must live at a different physical address than the primary
892 Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address
893 it has been loaded at and the compile time physical addresses
894 CONFIG_PHYSICAL_START is ignored. However CONFIG_PHYSICAL_START
895 setting can still be useful to bootwrappers that need to know the
896 load address of the kernel (eg. u-boot/mkimage).
898 config RELOCATABLE_PPC32
900 depends on PPC32 && RELOCATABLE
902 config PAGE_OFFSET_BOOL
903 bool "Set custom page offset address"
904 depends on ADVANCED_OPTIONS
906 This option allows you to set the kernel virtual address at which
907 the kernel will map low memory. This can be useful in optimizing
908 the virtual memory layout of the system.
910 Say N here unless you know what you are doing.
913 hex "Virtual address of memory base" if PAGE_OFFSET_BOOL
916 config KERNEL_START_BOOL
917 bool "Set custom kernel base address"
918 depends on ADVANCED_OPTIONS
920 This option allows you to set the kernel virtual address at which
921 the kernel will be loaded. Normally this should match PAGE_OFFSET
922 however there are times (like kdump) that one might not want them
925 Say N here unless you know what you are doing.
928 hex "Virtual address of kernel base" if KERNEL_START_BOOL
929 default PAGE_OFFSET if PAGE_OFFSET_BOOL
930 default "0xc2000000" if CRASH_DUMP && !NONSTATIC_KERNEL
933 config PHYSICAL_START_BOOL
934 bool "Set physical address where the kernel is loaded"
935 depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE
937 This gives the physical address where the kernel is loaded.
939 Say N here unless you know what you are doing.
941 config PHYSICAL_START
942 hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL
943 default "0x02000000" if PPC_STD_MMU && CRASH_DUMP && !NONSTATIC_KERNEL
946 config PHYSICAL_ALIGN
948 default "0x04000000" if FSL_BOOKE
950 This value puts the alignment restrictions on physical address
951 where kernel is loaded and run from. Kernel is compiled for an
952 address which meets above alignment restriction.
954 config TASK_SIZE_BOOL
955 bool "Set custom user task size"
956 depends on ADVANCED_OPTIONS
958 This option allows you to set the amount of virtual address space
959 allocated to user tasks. This can be useful in optimizing the
960 virtual memory layout of the system.
962 Say N here unless you know what you are doing.
965 hex "Size of user task space" if TASK_SIZE_BOOL
966 default "0x80000000" if PPC_8xx
969 config CONSISTENT_SIZE_BOOL
970 bool "Set custom consistent memory pool size"
971 depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
973 This option allows you to set the size of the
974 consistent memory pool. This pool of virtual memory
975 is used to make consistent memory allocations.
977 config CONSISTENT_SIZE
978 hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
979 default "0x00200000" if NOT_COHERENT_CACHE
982 bool "Pinned Kernel TLBs (860 ONLY)"
983 depends on ADVANCED_OPTIONS && 8xx
988 bool "Build a relocatable kernel"
989 depends on !COMPILE_TEST
990 select NONSTATIC_KERNEL
992 This builds a kernel image that is capable of running anywhere
993 in the RMA (real memory area) at any 16k-aligned base address.
994 The kernel is linked as a position-independent executable (PIE)
995 and contains dynamic relocations which are processed early
996 in the bootup process.
998 One use is for the kexec on panic case where the recovery kernel
999 must live at a different physical address than the primary
1002 # This value must have zeroes in the bottom 60 bits otherwise lots will break
1005 default "0xc000000000000000"
1008 default "0xc000000000000000"
1009 config PHYSICAL_START
1011 default "0x00000000"
1014 source "net/Kconfig"
1016 source "drivers/Kconfig"
1020 source "arch/powerpc/sysdev/qe_lib/Kconfig"
1022 source "lib/Kconfig"
1024 source "arch/powerpc/Kconfig.debug"
1026 source "security/Kconfig"
1030 depends on COMPAT && KEYS
1033 source "crypto/Kconfig"
1040 config PPC_LIB_RHEAP
1043 source "arch/powerpc/kvm/Kconfig"