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 if !CPU_LITTLE_ENDIAN
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
143 def_bool CPU_LITTLE_ENDIAN
152 select COMPAT_BINFMT_ELF
153 select ARCH_WANT_OLD_COMPAT_IPC
154 select COMPAT_OLD_SIGACTION
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 config PPC_EMULATE_SSTEP
278 default y if KPROBES || UPROBES || XMON || HAVE_HW_BREAKPOINT
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 || PPC_MPC832x || BOOKE
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 This is also useful to emulate missing (optional) instructions
314 such as fsqrt on cores that do have an FPU but do not implement
315 them (such as Freescale BookE).
318 prompt "Math emulation options"
319 default MATH_EMULATION_FULL
320 depends on MATH_EMULATION
322 config MATH_EMULATION_FULL
323 bool "Emulate all the floating point instructions"
325 Select this option will enable the kernel to support to emulate
326 all the floating point instructions. If your SoC doesn't have
327 a FPU, you should select this.
329 config MATH_EMULATION_HW_UNIMPLEMENTED
330 bool "Just emulate the FPU unimplemented instructions"
332 Select this if you know there does have a hardware FPU on your
333 SoC, but some floating point instructions are not implemented by that.
337 config PPC_TRANSACTIONAL_MEM
338 bool "Transactional Memory support for POWERPC"
339 depends on PPC_BOOK3S_64
343 Support user-mode Transactional Memory on POWERPC.
349 bool "SWIOTLB support"
353 Support for IO bounce buffering for systems without an IOMMU.
354 This allows us to DMA to the full physical address space on
355 platforms where the size of a physical address is larger
356 than the bus address. Not all platforms support this.
359 bool "Support for enabling/disabling CPUs"
360 depends on SMP && (PPC_PSERIES || \
361 PPC_PMAC || PPC_POWERNV || (PPC_85xx && !PPC_E500MC))
363 Say Y here to be able to disable and re-enable individual
364 CPUs at runtime on SMP machines.
366 Say N if you are unsure.
368 config ARCH_CPU_PROBE_RELEASE
370 depends on HOTPLUG_CPU
372 config ARCH_ENABLE_MEMORY_HOTPLUG
375 config ARCH_HAS_WALK_MEMORY
378 config ARCH_ENABLE_MEMORY_HOTREMOVE
382 bool "kexec system call"
383 depends on (PPC_BOOK3S || FSL_BOOKE || (44x && !SMP))
385 kexec is a system call that implements the ability to shutdown your
386 current kernel, and to start another kernel. It is like a reboot
387 but it is independent of the system firmware. And like a reboot
388 you can start any kernel with it, not just Linux.
390 The name comes from the similarity to the exec system call.
392 It is an ongoing process to be certain the hardware in a machine
393 is properly shutdown, so do not be surprised if this code does not
394 initially work for you. As of this writing the exact hardware
395 interface is strongly in flux, so no good recommendation can be
399 bool "Build a kdump crash kernel"
400 depends on PPC64 || 6xx || FSL_BOOKE || (44x && !SMP)
401 select RELOCATABLE if PPC64 || 44x
402 select DYNAMIC_MEMSTART if FSL_BOOKE
404 Build a kernel suitable for use as a kdump capture kernel.
405 The same kernel binary can be used as production kernel and dump
409 bool "Firmware-assisted dump"
410 depends on PPC64 && PPC_RTAS && CRASH_DUMP
412 A robust mechanism to get reliable kernel crash dump with
413 assistance from firmware. This approach does not use kexec,
414 instead firmware assists in booting the kdump kernel
415 while preserving memory contents. Firmware-assisted dump
416 is meant to be a kdump replacement offering robustness and
417 speed not possible without system firmware assistance.
422 bool "Distribute interrupts on all CPUs by default"
425 This option gives the kernel permission to distribute IRQs across
426 multiple CPUs. Saying N here will route all IRQs to the first
427 CPU. Generally saying Y is safe, although some problems have been
428 reported with SMP Power Macintoshes with this option enabled.
433 default y if SMP && PPC_PSERIES
439 depends on NEED_MULTIPLE_NODES
441 config ARCH_SELECT_MEMORY_MODEL
445 config ARCH_FLATMEM_ENABLE
447 depends on (PPC64 && !NUMA) || PPC32
449 config ARCH_SPARSEMEM_ENABLE
452 select SPARSEMEM_VMEMMAP_ENABLE
454 config ARCH_SPARSEMEM_DEFAULT
456 depends on (SMP && PPC_PSERIES) || PPC_PS3
458 config SYS_SUPPORTS_HUGETLBFS
463 config ARCH_MEMORY_PROBE
465 depends on MEMORY_HOTPLUG
467 # Some NUMA nodes have memory ranges that span
468 # other nodes. Even though a pfn is valid and
469 # between a node's start and end pfns, it may not
470 # reside on that node. See memmap_init_zone()
472 config NODES_SPAN_OTHER_NODES
474 depends on NEED_MULTIPLE_NODES
476 config PPC_HAS_HASH_64K
482 bool "Using standard binutils settings"
486 Turning this option off allows you to select 256KB PAGE_SIZE on 44x.
487 Note, that kernel will be able to run only those applications,
488 which had been compiled using binutils later than 2.17.50.0.3 with
489 '-zmax-page-size' set to 256K (the default is 64K). Or, if using
490 the older binutils, you can patch them with a trivial patch, which
491 changes the ELF_MAXPAGESIZE definition from 0x10000 to 0x40000.
497 Select the kernel logical page size. Increasing the page size
498 will reduce software overhead at each page boundary, allow
499 hardware prefetch mechanisms to be more effective, and allow
500 larger dma transfers increasing IO efficiency and reducing
501 overhead. However the utilization of memory will increase.
502 For example, each cached file will using a multiple of the
503 page size to hold its contents and the difference between the
504 end of file and the end of page is wasted.
506 Some dedicated systems, such as software raid serving with
507 accelerated calculations, have shown significant increases.
509 If you configure a 64 bit kernel for 64k pages but the
510 processor does not support them, then the kernel will simulate
511 them with 4k pages, loading them on demand, but with the
512 reduced software overhead and larger internal fragmentation.
513 For the 32 bit kernel, a large page option will not be offered
514 unless it is supported by the configured processor.
516 If unsure, choose 4K_PAGES.
522 bool "16k page size" if 44x
525 bool "64k page size" if 44x || PPC_STD_MMU_64 || PPC_BOOK3E_64
526 select PPC_HAS_HASH_64K if PPC_STD_MMU_64
528 config PPC_256K_PAGES
529 bool "256k page size" if 44x
530 depends on !STDBINUTILS
532 Make the page size 256k.
534 As the ELF standard only requires alignment to support page
535 sizes up to 64k, you will need to compile all of your user
536 space applications with a non-standard binutils settings
537 (see the STDBINUTILS description for details).
539 Say N unless you know what you are doing.
543 config FORCE_MAX_ZONEORDER
544 int "Maximum zone order"
545 range 9 64 if PPC64 && PPC_64K_PAGES
546 default "9" if PPC64 && PPC_64K_PAGES
547 range 13 64 if PPC64 && !PPC_64K_PAGES
548 default "13" if PPC64 && !PPC_64K_PAGES
549 range 9 64 if PPC32 && PPC_16K_PAGES
550 default "9" if PPC32 && PPC_16K_PAGES
551 range 7 64 if PPC32 && PPC_64K_PAGES
552 default "7" if PPC32 && PPC_64K_PAGES
553 range 5 64 if PPC32 && PPC_256K_PAGES
554 default "5" if PPC32 && PPC_256K_PAGES
558 The kernel memory allocator divides physically contiguous memory
559 blocks into "zones", where each zone is a power of two number of
560 pages. This option selects the largest power of two that the kernel
561 keeps in the memory allocator. If you need to allocate very large
562 blocks of physically contiguous memory, then you may need to
565 This config option is actually maximum order plus one. For example,
566 a value of 11 means that the largest free memory block is 2^10 pages.
568 The page size is not necessarily 4KB. For example, on 64-bit
569 systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES. Keep
570 this in mind when choosing a value for this option.
572 config PPC_SUBPAGE_PROT
573 bool "Support setting protections for 4k subpages"
574 depends on PPC_STD_MMU_64 && PPC_64K_PAGES
576 This option adds support for a system call to allow user programs
577 to set access permissions (read/write, readonly, or no access)
578 on the 4k subpages of each 64k page.
581 bool "SMT (Hyperthreading) scheduler support"
582 depends on PPC64 && SMP
584 SMT scheduler support improves the CPU scheduler's decision making
585 when dealing with POWER5 cpus at a cost of slightly increased
586 overhead in some places. If unsure say N here.
588 config PPC_DENORMALISATION
589 bool "PowerPC denormalisation exception handling"
590 depends on PPC_BOOK3S_64
591 default "y" if PPC_POWERNV
593 Add support for handling denormalisation of single precision
594 values. Useful for bare metal only. If unsure say Y here.
597 bool "Default bootloader kernel arguments"
600 string "Initial kernel command string"
601 depends on CMDLINE_BOOL
602 default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
604 On some platforms, there is currently no way for the boot loader to
605 pass arguments to the kernel. For these platforms, you can supply
606 some command-line options at build time by entering them here. In
607 most cases you will need to specify the root device here.
610 string "Additional default image types"
612 List additional targets to be built by the bootwrapper here (separated
613 by spaces). This is useful for targets that depend of device tree
614 files in the .dts directory.
616 Targets in this list will be build as part of the default build
617 target, or when the user does a 'make zImage' or a
618 'make zImage.initrd'.
620 If unsure, leave blank
622 config ARCH_WANTS_FREEZER_CONTROL
626 source kernel/power/Kconfig
629 bool "Enable seccomp to safely compute untrusted bytecode"
633 This kernel feature is useful for number crunching applications
634 that may need to compute untrusted bytecode during their
635 execution. By using pipes or other transports made available to
636 the process as file descriptors supporting the read/write
637 syscalls, it's possible to isolate those applications in
638 their own address space using seccomp. Once seccomp is
639 enabled via /proc/<pid>/seccomp, it cannot be disabled
640 and the task is only allowed to execute a few safe syscalls
641 defined by each seccomp mode.
643 If unsure, say Y. Only embedded should say N here.
654 bool "Support for ISA-bus hardware"
658 Find out whether you have ISA slots on your motherboard. ISA is the
659 name of a bus system, i.e. the way the CPU talks to the other stuff
660 inside your box. If you have an Apple machine, say N here; if you
661 have an IBM RS/6000 or pSeries machine, say Y. If you have an
662 embedded board, consult your board documentation.
668 config NEED_DMA_MAP_STATE
669 def_bool (PPC64 || NOT_COHERENT_CACHE)
671 config NEED_SG_DMA_LENGTH
674 config GENERIC_ISA_DMA
676 depends on ISA_DMA_API
679 config PPC_INDIRECT_PCI
682 default y if 40x || 44x
696 select PPC_INDIRECT_PCI
702 depends on SUSPEND && (PPC_85xx || PPC_86xx)
704 Freescale MPC85xx/MPC86xx power management controller support
705 (suspend/resume). For MPC83xx see platforms/83xx/suspend.c
710 depends on SUSPEND && (44x || 40x)
712 PPC4xx Clock Power Management (CPM) support (suspend/resume).
713 It also enables support for two different idle states (idle-wait
720 bool "Freescale Local Bus support"
723 Enables reporting of errors from the Freescale local bus
724 controller. Also contains some common code used by
725 drivers for specific local bus peripherals.
733 depends on PPC_83xx || QUICC_ENGINE || CPM2
735 Freescale General-purpose Timers support
737 # Yes MCA RS/6000s exist but Linux-PPC does not currently support any
741 # Platforms that what PCI turned unconditionally just do select PCI
742 # in their config node. Platforms that want to choose at config
743 # time should select PPC_PCI_CHOICE
744 config PPC_PCI_CHOICE
748 bool "PCI support" if PPC_PCI_CHOICE
749 default y if !40x && !CPM2 && !8xx && !PPC_83xx \
750 && !PPC_85xx && !PPC_86xx && !GAMECUBE_COMMON
751 default PCI_QSPAN if !4xx && !CPM2 && 8xx
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
779 source "drivers/pci/pcie/Kconfig"
781 source "drivers/pci/Kconfig"
783 source "drivers/pcmcia/Kconfig"
785 source "drivers/pci/hotplug/Kconfig"
792 bool "RapidIO support"
793 depends on HAS_RAPIDIO || PCI
795 If you say Y here, the kernel will include drivers and
796 infrastructure code to support RapidIO interconnect devices.
799 bool "Freescale Embedded SRIO Controller support"
800 depends on RAPIDIO && HAS_RAPIDIO
803 Include support for RapidIO controller on Freescale embedded
804 processors (MPC8548, MPC8641, etc).
806 source "drivers/rapidio/Kconfig"
810 config NONSTATIC_KERNEL
814 menu "Advanced setup"
817 config ADVANCED_OPTIONS
818 bool "Prompt for advanced kernel configuration options"
820 This option will enable prompting for a variety of advanced kernel
821 configuration options. These options can cause the kernel to not
822 work if they are set incorrectly, but can be used to optimize certain
823 aspects of kernel memory management.
825 Unless you know what you are doing, say N here.
827 comment "Default settings for advanced configuration options are used"
828 depends on !ADVANCED_OPTIONS
830 config LOWMEM_SIZE_BOOL
831 bool "Set maximum low memory"
832 depends on ADVANCED_OPTIONS
834 This option allows you to set the maximum amount of memory which
835 will be used as "low memory", that is, memory which the kernel can
836 access directly, without having to set up a kernel virtual mapping.
837 This can be useful in optimizing the layout of kernel virtual
840 Say N here unless you know what you are doing.
843 hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
846 config LOWMEM_CAM_NUM_BOOL
847 bool "Set number of CAMs to use to map low memory"
848 depends on ADVANCED_OPTIONS && FSL_BOOKE
850 This option allows you to set the maximum number of CAM slots that
851 will be used to map low memory. There are a limited number of slots
852 available and even more limited number that will fit in the L1 MMU.
853 However, using more entries will allow mapping more low memory. This
854 can be useful in optimizing the layout of kernel virtual memory.
856 Say N here unless you know what you are doing.
858 config LOWMEM_CAM_NUM
860 int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL
863 config DYNAMIC_MEMSTART
864 bool "Enable page aligned dynamic load address for kernel"
865 depends on ADVANCED_OPTIONS && FLATMEM && (FSL_BOOKE || 44x)
866 select NONSTATIC_KERNEL
868 This option enables the kernel to be loaded at any page aligned
869 physical address. The kernel creates a mapping from KERNELBASE to
870 the address where the kernel is loaded. The page size here implies
871 the TLB page size of the mapping for kernel on the particular platform.
872 Please refer to the init code for finding the TLB page size.
874 DYNAMIC_MEMSTART is an easy way of implementing pseudo-RELOCATABLE
875 kernel image, where the only restriction is the page aligned kernel
876 load address. When this option is enabled, the compile time physical
877 address CONFIG_PHYSICAL_START is ignored.
879 This option is overridden by CONFIG_RELOCATABLE
882 bool "Build a relocatable kernel"
883 depends on ADVANCED_OPTIONS && FLATMEM && 44x
884 select NONSTATIC_KERNEL
886 This builds a kernel image that is capable of running at the
887 location the kernel is loaded at, without any alignment restrictions.
888 This feature is a superset of DYNAMIC_MEMSTART and hence overrides it.
890 One use is for the kexec on panic case where the recovery kernel
891 must live at a different physical address than the primary
894 Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address
895 it has been loaded at and the compile time physical addresses
896 CONFIG_PHYSICAL_START is ignored. However CONFIG_PHYSICAL_START
897 setting can still be useful to bootwrappers that need to know the
898 load address of the kernel (eg. u-boot/mkimage).
900 config RELOCATABLE_PPC32
902 depends on PPC32 && RELOCATABLE
904 config PAGE_OFFSET_BOOL
905 bool "Set custom page offset address"
906 depends on ADVANCED_OPTIONS
908 This option allows you to set the kernel virtual address at which
909 the kernel will map low memory. This can be useful in optimizing
910 the virtual memory layout of the system.
912 Say N here unless you know what you are doing.
915 hex "Virtual address of memory base" if PAGE_OFFSET_BOOL
918 config KERNEL_START_BOOL
919 bool "Set custom kernel base address"
920 depends on ADVANCED_OPTIONS
922 This option allows you to set the kernel virtual address at which
923 the kernel will be loaded. Normally this should match PAGE_OFFSET
924 however there are times (like kdump) that one might not want them
927 Say N here unless you know what you are doing.
930 hex "Virtual address of kernel base" if KERNEL_START_BOOL
931 default PAGE_OFFSET if PAGE_OFFSET_BOOL
932 default "0xc2000000" if CRASH_DUMP && !NONSTATIC_KERNEL
935 config PHYSICAL_START_BOOL
936 bool "Set physical address where the kernel is loaded"
937 depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE
939 This gives the physical address where the kernel is loaded.
941 Say N here unless you know what you are doing.
943 config PHYSICAL_START
944 hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL
945 default "0x02000000" if PPC_STD_MMU && CRASH_DUMP && !NONSTATIC_KERNEL
948 config PHYSICAL_ALIGN
950 default "0x04000000" if FSL_BOOKE
952 This value puts the alignment restrictions on physical address
953 where kernel is loaded and run from. Kernel is compiled for an
954 address which meets above alignment restriction.
956 config TASK_SIZE_BOOL
957 bool "Set custom user task size"
958 depends on ADVANCED_OPTIONS
960 This option allows you to set the amount of virtual address space
961 allocated to user tasks. This can be useful in optimizing the
962 virtual memory layout of the system.
964 Say N here unless you know what you are doing.
967 hex "Size of user task space" if TASK_SIZE_BOOL
968 default "0x80000000" if PPC_8xx
971 config CONSISTENT_SIZE_BOOL
972 bool "Set custom consistent memory pool size"
973 depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
975 This option allows you to set the size of the
976 consistent memory pool. This pool of virtual memory
977 is used to make consistent memory allocations.
979 config CONSISTENT_SIZE
980 hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
981 default "0x00200000" if NOT_COHERENT_CACHE
984 bool "Pinned Kernel TLBs (860 ONLY)"
985 depends on ADVANCED_OPTIONS && 8xx
990 bool "Build a relocatable kernel"
991 select NONSTATIC_KERNEL
993 This builds a kernel image that is capable of running anywhere
994 in the RMA (real memory area) at any 16k-aligned base address.
995 The kernel is linked as a position-independent executable (PIE)
996 and contains dynamic relocations which are processed early
997 in the bootup process.
999 One use is for the kexec on panic case where the recovery kernel
1000 must live at a different physical address than the primary
1003 # This value must have zeroes in the bottom 60 bits otherwise lots will break
1006 default "0xc000000000000000"
1009 default "0xc000000000000000"
1010 config PHYSICAL_START
1012 default "0x00000000"
1018 source "net/Kconfig"
1020 source "drivers/Kconfig"
1024 source "arch/powerpc/sysdev/qe_lib/Kconfig"
1026 source "lib/Kconfig"
1028 source "arch/powerpc/Kconfig.debug"
1030 source "security/Kconfig"
1034 depends on COMPAT && KEYS
1037 source "crypto/Kconfig"
1044 config PPC_LIB_RHEAP
1047 source "arch/powerpc/kvm/Kconfig"