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 select ARCH_MIGHT_HAVE_PC_PARPORT
89 select ARCH_MIGHT_HAVE_PC_SERIO
92 select OF_EARLY_FLATTREE
93 select OF_RESERVED_MEM
94 select HAVE_FTRACE_MCOUNT_RECORD
95 select HAVE_DYNAMIC_FTRACE
96 select HAVE_FUNCTION_TRACER
97 select HAVE_FUNCTION_GRAPH_TRACER
98 select SYSCTL_EXCEPTION_TRACE
99 select ARCH_WANT_OPTIONAL_GPIOLIB
100 select VIRT_TO_BUS if !PPC64
102 select HAVE_IOREMAP_PROT
103 select HAVE_EFFICIENT_UNALIGNED_ACCESS if !CPU_LITTLE_ENDIAN
105 select HAVE_ARCH_KGDB
106 select HAVE_KRETPROBES
107 select HAVE_ARCH_TRACEHOOK
109 select HAVE_MEMBLOCK_NODE_MAP
110 select HAVE_DMA_ATTRS
111 select HAVE_DMA_API_DEBUG
113 select HAVE_DEBUG_KMEMLEAK
114 select GENERIC_ATOMIC64 if PPC32
115 select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
116 select HAVE_PERF_EVENTS
117 select HAVE_REGS_AND_STACK_ACCESS_API
118 select HAVE_HW_BREAKPOINT if PERF_EVENTS && PPC_BOOK3S_64
119 select ARCH_WANT_IPC_PARSE_VERSION
122 select GENERIC_IRQ_SHOW
123 select GENERIC_IRQ_SHOW_LEVEL
124 select IRQ_FORCED_THREADING
125 select HAVE_RCU_TABLE_FREE if SMP
126 select HAVE_SYSCALL_TRACEPOINTS
127 select HAVE_BPF_JIT if PPC64
128 select HAVE_ARCH_JUMP_LABEL
129 select ARCH_HAVE_NMI_SAFE_CMPXCHG
130 select GENERIC_SMP_IDLE_THREAD
131 select GENERIC_CMOS_UPDATE
132 select GENERIC_TIME_VSYSCALL_OLD
133 select GENERIC_CLOCKEVENTS
134 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
135 select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
136 select GENERIC_STRNCPY_FROM_USER
137 select GENERIC_STRNLEN_USER
138 select HAVE_MOD_ARCH_SPECIFIC
139 select MODULES_USE_ELF_RELA
140 select CLONE_BACKWARDS
141 select ARCH_USE_BUILTIN_BSWAP
142 select OLD_SIGSUSPEND
143 select OLD_SIGACTION if PPC32
144 select HAVE_DEBUG_STACKOVERFLOW
145 select HAVE_IRQ_EXIT_ON_IRQ_STACK
146 select ARCH_USE_CMPXCHG_LOCKREF if PPC64
149 def_bool CPU_LITTLE_ENDIAN
162 select COMPAT_BINFMT_ELF
163 select ARCH_WANT_OLD_COMPAT_IPC
164 select COMPAT_OLD_SIGACTION
166 config SYSVIPC_COMPAT
168 depends on COMPAT && SYSVIPC
171 # All PPC32s use generic nvram driver through ppc_md
176 config SCHED_OMIT_FRAME_POINTER
180 config ARCH_MAY_HAVE_PC_FDC
182 default !PPC_PSERIES || PCI
187 config PPC_UDBG_16550
191 config GENERIC_TBSYNC
193 default y if PPC32 && SMP
205 config SYS_SUPPORTS_APM_EMULATION
206 default y if PMAC_APM_EMU
212 Used to allow a board to specify it wants an ePAPR compliant wrapper.
215 config DEFAULT_UIMAGE
218 Used to allow a board to specify it wants a uImage built by default
221 config ARCH_HIBERNATION_POSSIBLE
225 config ARCH_SUSPEND_POSSIBLE
227 depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx || \
228 (PPC_85xx && !PPC_E500MC) || PPC_86xx || PPC_PSERIES \
231 config PPC_DCR_NATIVE
241 depends on PPC_DCR_NATIVE || PPC_DCR_MMIO
244 config PPC_OF_PLATFORM_PCI
247 depends on PPC64 # not supported on 32 bits yet
250 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
253 config ARCH_SUPPORTS_UPROBES
256 config PPC_ADV_DEBUG_REGS
258 depends on 40x || BOOKE
261 config PPC_ADV_DEBUG_IACS
263 depends on PPC_ADV_DEBUG_REGS
267 config PPC_ADV_DEBUG_DACS
269 depends on PPC_ADV_DEBUG_REGS
272 config PPC_ADV_DEBUG_DVCS
274 depends on PPC_ADV_DEBUG_REGS
278 config PPC_ADV_DEBUG_DAC_RANGE
280 depends on PPC_ADV_DEBUG_REGS && 44x
283 config PPC_EMULATE_SSTEP
285 default y if KPROBES || UPROBES || XMON || HAVE_HW_BREAKPOINT
287 source "init/Kconfig"
289 source "kernel/Kconfig.freezer"
291 source "arch/powerpc/sysdev/Kconfig"
292 source "arch/powerpc/platforms/Kconfig"
294 menu "Kernel options"
297 bool "High memory support"
300 source kernel/Kconfig.hz
301 source kernel/Kconfig.preempt
302 source "fs/Kconfig.binfmt"
304 config HUGETLB_PAGE_SIZE_VARIABLE
306 depends on HUGETLB_PAGE
309 config MATH_EMULATION
310 bool "Math emulation"
311 depends on 4xx || 8xx || PPC_MPC832x || BOOKE
313 Some PowerPC chips designed for embedded applications do not have
314 a floating-point unit and therefore do not implement the
315 floating-point instructions in the PowerPC instruction set. If you
316 say Y here, the kernel will include code to emulate a floating-point
317 unit, which will allow programs that use floating-point
320 This is also useful to emulate missing (optional) instructions
321 such as fsqrt on cores that do have an FPU but do not implement
322 them (such as Freescale BookE).
325 prompt "Math emulation options"
326 default MATH_EMULATION_FULL
327 depends on MATH_EMULATION
329 config MATH_EMULATION_FULL
330 bool "Emulate all the floating point instructions"
332 Select this option will enable the kernel to support to emulate
333 all the floating point instructions. If your SoC doesn't have
334 a FPU, you should select this.
336 config MATH_EMULATION_HW_UNIMPLEMENTED
337 bool "Just emulate the FPU unimplemented instructions"
339 Select this if you know there does have a hardware FPU on your
340 SoC, but some floating point instructions are not implemented by that.
344 config PPC_TRANSACTIONAL_MEM
345 bool "Transactional Memory support for POWERPC"
346 depends on PPC_BOOK3S_64
352 Support user-mode Transactional Memory on POWERPC.
358 bool "SWIOTLB support"
362 Support for IO bounce buffering for systems without an IOMMU.
363 This allows us to DMA to the full physical address space on
364 platforms where the size of a physical address is larger
365 than the bus address. Not all platforms support this.
368 bool "Support for enabling/disabling CPUs"
369 depends on SMP && (PPC_PSERIES || \
370 PPC_PMAC || PPC_POWERNV || (PPC_85xx && !PPC_E500MC))
372 Say Y here to be able to disable and re-enable individual
373 CPUs at runtime on SMP machines.
375 Say N if you are unsure.
377 config ARCH_CPU_PROBE_RELEASE
379 depends on HOTPLUG_CPU
381 config ARCH_ENABLE_MEMORY_HOTPLUG
384 config ARCH_HAS_WALK_MEMORY
387 config ARCH_ENABLE_MEMORY_HOTREMOVE
390 config PPC64_SUPPORTS_MEMORY_FAILURE
391 bool "Add support for memory hwpoison"
392 depends on PPC_BOOK3S_64
393 default "y" if PPC_POWERNV
394 select ARCH_SUPPORTS_MEMORY_FAILURE
397 bool "kexec system call"
398 depends on (PPC_BOOK3S || FSL_BOOKE || (44x && !SMP))
400 kexec is a system call that implements the ability to shutdown your
401 current kernel, and to start another kernel. It is like a reboot
402 but it is independent of the system firmware. And like a reboot
403 you can start any kernel with it, not just Linux.
405 The name comes from the similarity to the exec system call.
407 It is an ongoing process to be certain the hardware in a machine
408 is properly shutdown, so do not be surprised if this code does not
409 initially work for you. As of this writing the exact hardware
410 interface is strongly in flux, so no good recommendation can be
414 bool "Build a kdump crash kernel"
415 depends on PPC64 || 6xx || FSL_BOOKE || (44x && !SMP)
416 select RELOCATABLE if PPC64 || 44x || FSL_BOOKE
418 Build a kernel suitable for use as a kdump capture kernel.
419 The same kernel binary can be used as production kernel and dump
423 bool "Firmware-assisted dump"
424 depends on PPC64 && PPC_RTAS && CRASH_DUMP && KEXEC
426 A robust mechanism to get reliable kernel crash dump with
427 assistance from firmware. This approach does not use kexec,
428 instead firmware assists in booting the kdump kernel
429 while preserving memory contents. Firmware-assisted dump
430 is meant to be a kdump replacement offering robustness and
431 speed not possible without system firmware assistance.
436 bool "Distribute interrupts on all CPUs by default"
439 This option gives the kernel permission to distribute IRQs across
440 multiple CPUs. Saying N here will route all IRQs to the first
441 CPU. Generally saying Y is safe, although some problems have been
442 reported with SMP Power Macintoshes with this option enabled.
447 default y if SMP && PPC_PSERIES
453 depends on NEED_MULTIPLE_NODES
455 config ARCH_SELECT_MEMORY_MODEL
459 config ARCH_FLATMEM_ENABLE
461 depends on (PPC64 && !NUMA) || PPC32
463 config ARCH_SPARSEMEM_ENABLE
466 select SPARSEMEM_VMEMMAP_ENABLE
468 config ARCH_SPARSEMEM_DEFAULT
470 depends on (SMP && PPC_PSERIES) || PPC_PS3
472 config SYS_SUPPORTS_HUGETLBFS
477 config ARCH_MEMORY_PROBE
479 depends on MEMORY_HOTPLUG
481 # Some NUMA nodes have memory ranges that span
482 # other nodes. Even though a pfn is valid and
483 # between a node's start and end pfns, it may not
484 # reside on that node. See memmap_init_zone()
486 config NODES_SPAN_OTHER_NODES
488 depends on NEED_MULTIPLE_NODES
490 config PPC_HAS_HASH_64K
496 bool "Using standard binutils settings"
500 Turning this option off allows you to select 256KB PAGE_SIZE on 44x.
501 Note, that kernel will be able to run only those applications,
502 which had been compiled using binutils later than 2.17.50.0.3 with
503 '-zmax-page-size' set to 256K (the default is 64K). Or, if using
504 the older binutils, you can patch them with a trivial patch, which
505 changes the ELF_MAXPAGESIZE definition from 0x10000 to 0x40000.
511 Select the kernel logical page size. Increasing the page size
512 will reduce software overhead at each page boundary, allow
513 hardware prefetch mechanisms to be more effective, and allow
514 larger dma transfers increasing IO efficiency and reducing
515 overhead. However the utilization of memory will increase.
516 For example, each cached file will using a multiple of the
517 page size to hold its contents and the difference between the
518 end of file and the end of page is wasted.
520 Some dedicated systems, such as software raid serving with
521 accelerated calculations, have shown significant increases.
523 If you configure a 64 bit kernel for 64k pages but the
524 processor does not support them, then the kernel will simulate
525 them with 4k pages, loading them on demand, but with the
526 reduced software overhead and larger internal fragmentation.
527 For the 32 bit kernel, a large page option will not be offered
528 unless it is supported by the configured processor.
530 If unsure, choose 4K_PAGES.
536 bool "16k page size" if 44x
539 bool "64k page size" if 44x || PPC_STD_MMU_64 || PPC_BOOK3E_64
540 depends on !PPC_FSL_BOOK3E
541 select PPC_HAS_HASH_64K if PPC_STD_MMU_64
543 config PPC_256K_PAGES
544 bool "256k page size" if 44x
545 depends on !STDBINUTILS
547 Make the page size 256k.
549 As the ELF standard only requires alignment to support page
550 sizes up to 64k, you will need to compile all of your user
551 space applications with a non-standard binutils settings
552 (see the STDBINUTILS description for details).
554 Say N unless you know what you are doing.
558 config FORCE_MAX_ZONEORDER
559 int "Maximum zone order"
560 range 9 64 if PPC64 && PPC_64K_PAGES
561 default "9" if PPC64 && PPC_64K_PAGES
562 range 13 64 if PPC64 && !PPC_64K_PAGES
563 default "13" if PPC64 && !PPC_64K_PAGES
564 range 9 64 if PPC32 && PPC_16K_PAGES
565 default "9" if PPC32 && PPC_16K_PAGES
566 range 7 64 if PPC32 && PPC_64K_PAGES
567 default "7" if PPC32 && PPC_64K_PAGES
568 range 5 64 if PPC32 && PPC_256K_PAGES
569 default "5" if PPC32 && PPC_256K_PAGES
573 The kernel memory allocator divides physically contiguous memory
574 blocks into "zones", where each zone is a power of two number of
575 pages. This option selects the largest power of two that the kernel
576 keeps in the memory allocator. If you need to allocate very large
577 blocks of physically contiguous memory, then you may need to
580 This config option is actually maximum order plus one. For example,
581 a value of 11 means that the largest free memory block is 2^10 pages.
583 The page size is not necessarily 4KB. For example, on 64-bit
584 systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES. Keep
585 this in mind when choosing a value for this option.
587 config PPC_SUBPAGE_PROT
588 bool "Support setting protections for 4k subpages"
589 depends on PPC_STD_MMU_64 && PPC_64K_PAGES
591 This option adds support for a system call to allow user programs
592 to set access permissions (read/write, readonly, or no access)
593 on the 4k subpages of each 64k page.
596 bool "SMT (Hyperthreading) scheduler support"
597 depends on PPC64 && SMP
599 SMT scheduler support improves the CPU scheduler's decision making
600 when dealing with POWER5 cpus at a cost of slightly increased
601 overhead in some places. If unsure say N here.
603 config PPC_DENORMALISATION
604 bool "PowerPC denormalisation exception handling"
605 depends on PPC_BOOK3S_64
606 default "y" if PPC_POWERNV
608 Add support for handling denormalisation of single precision
609 values. Useful for bare metal only. If unsure say Y here.
612 bool "Default bootloader kernel arguments"
615 string "Initial kernel command string"
616 depends on CMDLINE_BOOL
617 default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
619 On some platforms, there is currently no way for the boot loader to
620 pass arguments to the kernel. For these platforms, you can supply
621 some command-line options at build time by entering them here. In
622 most cases you will need to specify the root device here.
625 bool "Always use the default kernel command string"
626 depends on CMDLINE_BOOL
628 Always use the default kernel command string, even if the boot
629 loader passes other arguments to the kernel.
630 This is useful if you cannot or don't want to change the
631 command-line options your boot loader passes to the kernel.
634 string "Additional default image types"
636 List additional targets to be built by the bootwrapper here (separated
637 by spaces). This is useful for targets that depend of device tree
638 files in the .dts directory.
640 Targets in this list will be build as part of the default build
641 target, or when the user does a 'make zImage' or a
642 'make zImage.initrd'.
644 If unsure, leave blank
646 config ARCH_WANTS_FREEZER_CONTROL
650 source kernel/power/Kconfig
653 bool "Enable seccomp to safely compute untrusted bytecode"
657 This kernel feature is useful for number crunching applications
658 that may need to compute untrusted bytecode during their
659 execution. By using pipes or other transports made available to
660 the process as file descriptors supporting the read/write
661 syscalls, it's possible to isolate those applications in
662 their own address space using seccomp. Once seccomp is
663 enabled via /proc/<pid>/seccomp, it cannot be disabled
664 and the task is only allowed to execute a few safe syscalls
665 defined by each seccomp mode.
667 If unsure, say Y. Only embedded should say N here.
678 bool "Support for ISA-bus hardware"
682 Find out whether you have ISA slots on your motherboard. ISA is the
683 name of a bus system, i.e. the way the CPU talks to the other stuff
684 inside your box. If you have an Apple machine, say N here; if you
685 have an IBM RS/6000 or pSeries machine, say Y. If you have an
686 embedded board, consult your board documentation.
692 config NEED_DMA_MAP_STATE
693 def_bool (PPC64 || NOT_COHERENT_CACHE)
695 config NEED_SG_DMA_LENGTH
698 config GENERIC_ISA_DMA
700 depends on ISA_DMA_API
703 config PPC_INDIRECT_PCI
706 default y if 40x || 44x
720 select PPC_INDIRECT_PCI
726 depends on SUSPEND && (PPC_85xx || PPC_86xx)
728 Freescale MPC85xx/MPC86xx power management controller support
729 (suspend/resume). For MPC83xx see platforms/83xx/suspend.c
734 depends on SUSPEND && (44x || 40x)
736 PPC4xx Clock Power Management (CPM) support (suspend/resume).
737 It also enables support for two different idle states (idle-wait
744 bool "Freescale Local Bus support"
747 Enables reporting of errors from the Freescale local bus
748 controller. Also contains some common code used by
749 drivers for specific local bus peripherals.
753 depends on PPC_83xx || QUICC_ENGINE || CPM2
755 Freescale General-purpose Timers support
757 # Yes MCA RS/6000s exist but Linux-PPC does not currently support any
761 # Platforms that what PCI turned unconditionally just do select PCI
762 # in their config node. Platforms that want to choose at config
763 # time should select PPC_PCI_CHOICE
764 config PPC_PCI_CHOICE
768 bool "PCI support" if PPC_PCI_CHOICE
769 default y if !40x && !CPM2 && !8xx && !PPC_83xx \
770 && !PPC_85xx && !PPC_86xx && !GAMECUBE_COMMON
771 default PCI_QSPAN if !4xx && !CPM2 && 8xx
772 select GENERIC_PCI_IOMAP
774 Find out whether your system includes a PCI bus. PCI is the name of
775 a bus system, i.e. the way the CPU talks to the other stuff inside
776 your box. If you say Y here, the kernel will include drivers and
777 infrastructure code to support PCI bus devices.
787 depends on !4xx && !CPM2 && 8xx
790 Say Y here if you have a system based on a Motorola 8xx-series
791 embedded processor with a QSPAN PCI interface, otherwise say N.
795 depends on PCI && 8260
796 select PPC_INDIRECT_PCI
799 source "drivers/pci/pcie/Kconfig"
801 source "drivers/pci/Kconfig"
803 source "drivers/pcmcia/Kconfig"
805 source "drivers/pci/hotplug/Kconfig"
812 tristate "RapidIO support"
813 depends on HAS_RAPIDIO || PCI
815 If you say Y here, the kernel will include drivers and
816 infrastructure code to support RapidIO interconnect devices.
819 bool "Freescale Embedded SRIO Controller support"
820 depends on RAPIDIO = y && HAS_RAPIDIO
823 Include support for RapidIO controller on Freescale embedded
824 processors (MPC8548, MPC8641, etc).
826 source "drivers/rapidio/Kconfig"
830 config NONSTATIC_KERNEL
834 menu "Advanced setup"
837 config ADVANCED_OPTIONS
838 bool "Prompt for advanced kernel configuration options"
840 This option will enable prompting for a variety of advanced kernel
841 configuration options. These options can cause the kernel to not
842 work if they are set incorrectly, but can be used to optimize certain
843 aspects of kernel memory management.
845 Unless you know what you are doing, say N here.
847 comment "Default settings for advanced configuration options are used"
848 depends on !ADVANCED_OPTIONS
850 config LOWMEM_SIZE_BOOL
851 bool "Set maximum low memory"
852 depends on ADVANCED_OPTIONS
854 This option allows you to set the maximum amount of memory which
855 will be used as "low memory", that is, memory which the kernel can
856 access directly, without having to set up a kernel virtual mapping.
857 This can be useful in optimizing the layout of kernel virtual
860 Say N here unless you know what you are doing.
863 hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
866 config LOWMEM_CAM_NUM_BOOL
867 bool "Set number of CAMs to use to map low memory"
868 depends on ADVANCED_OPTIONS && FSL_BOOKE
870 This option allows you to set the maximum number of CAM slots that
871 will be used to map low memory. There are a limited number of slots
872 available and even more limited number that will fit in the L1 MMU.
873 However, using more entries will allow mapping more low memory. This
874 can be useful in optimizing the layout of kernel virtual memory.
876 Say N here unless you know what you are doing.
878 config LOWMEM_CAM_NUM
880 int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL
883 config DYNAMIC_MEMSTART
884 bool "Enable page aligned dynamic load address for kernel"
885 depends on ADVANCED_OPTIONS && FLATMEM && (FSL_BOOKE || 44x)
886 select NONSTATIC_KERNEL
888 This option enables the kernel to be loaded at any page aligned
889 physical address. The kernel creates a mapping from KERNELBASE to
890 the address where the kernel is loaded. The page size here implies
891 the TLB page size of the mapping for kernel on the particular platform.
892 Please refer to the init code for finding the TLB page size.
894 DYNAMIC_MEMSTART is an easy way of implementing pseudo-RELOCATABLE
895 kernel image, where the only restriction is the page aligned kernel
896 load address. When this option is enabled, the compile time physical
897 address CONFIG_PHYSICAL_START is ignored.
899 This option is overridden by CONFIG_RELOCATABLE
902 bool "Build a relocatable kernel"
903 depends on ADVANCED_OPTIONS && FLATMEM && (44x || FSL_BOOKE)
904 select NONSTATIC_KERNEL
906 This builds a kernel image that is capable of running at the
907 location the kernel is loaded at, without any alignment restrictions.
908 This feature is a superset of DYNAMIC_MEMSTART and hence overrides it.
910 One use is for the kexec on panic case where the recovery kernel
911 must live at a different physical address than the primary
914 Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address
915 it has been loaded at and the compile time physical addresses
916 CONFIG_PHYSICAL_START is ignored. However CONFIG_PHYSICAL_START
917 setting can still be useful to bootwrappers that need to know the
918 load address of the kernel (eg. u-boot/mkimage).
920 config RELOCATABLE_PPC32
922 depends on PPC32 && RELOCATABLE
924 config PAGE_OFFSET_BOOL
925 bool "Set custom page offset address"
926 depends on ADVANCED_OPTIONS
928 This option allows you to set the kernel virtual address at which
929 the kernel will map low memory. This can be useful in optimizing
930 the virtual memory layout of the system.
932 Say N here unless you know what you are doing.
935 hex "Virtual address of memory base" if PAGE_OFFSET_BOOL
938 config KERNEL_START_BOOL
939 bool "Set custom kernel base address"
940 depends on ADVANCED_OPTIONS
942 This option allows you to set the kernel virtual address at which
943 the kernel will be loaded. Normally this should match PAGE_OFFSET
944 however there are times (like kdump) that one might not want them
947 Say N here unless you know what you are doing.
950 hex "Virtual address of kernel base" if KERNEL_START_BOOL
951 default PAGE_OFFSET if PAGE_OFFSET_BOOL
952 default "0xc2000000" if CRASH_DUMP && !NONSTATIC_KERNEL
955 config PHYSICAL_START_BOOL
956 bool "Set physical address where the kernel is loaded"
957 depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE
959 This gives the physical address where the kernel is loaded.
961 Say N here unless you know what you are doing.
963 config PHYSICAL_START
964 hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL
965 default "0x02000000" if PPC_STD_MMU && CRASH_DUMP && !NONSTATIC_KERNEL
968 config PHYSICAL_ALIGN
970 default "0x04000000" if FSL_BOOKE
972 This value puts the alignment restrictions on physical address
973 where kernel is loaded and run from. Kernel is compiled for an
974 address which meets above alignment restriction.
976 config TASK_SIZE_BOOL
977 bool "Set custom user task size"
978 depends on ADVANCED_OPTIONS
980 This option allows you to set the amount of virtual address space
981 allocated to user tasks. This can be useful in optimizing the
982 virtual memory layout of the system.
984 Say N here unless you know what you are doing.
987 hex "Size of user task space" if TASK_SIZE_BOOL
988 default "0x80000000" if PPC_8xx
991 config CONSISTENT_SIZE_BOOL
992 bool "Set custom consistent memory pool size"
993 depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
995 This option allows you to set the size of the
996 consistent memory pool. This pool of virtual memory
997 is used to make consistent memory allocations.
999 config CONSISTENT_SIZE
1000 hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
1001 default "0x00200000" if NOT_COHERENT_CACHE
1004 bool "Pinned Kernel TLBs (860 ONLY)"
1005 depends on ADVANCED_OPTIONS && 8xx
1010 bool "Build a relocatable kernel"
1011 select NONSTATIC_KERNEL
1013 This builds a kernel image that is capable of running anywhere
1014 in the RMA (real memory area) at any 16k-aligned base address.
1015 The kernel is linked as a position-independent executable (PIE)
1016 and contains dynamic relocations which are processed early
1017 in the bootup process.
1019 One use is for the kexec on panic case where the recovery kernel
1020 must live at a different physical address than the primary
1023 # This value must have zeroes in the bottom 60 bits otherwise lots will break
1026 default "0xc000000000000000"
1029 default "0xc000000000000000"
1030 config PHYSICAL_START
1032 default "0x00000000"
1038 source "net/Kconfig"
1040 source "drivers/Kconfig"
1044 source "arch/powerpc/sysdev/qe_lib/Kconfig"
1046 source "lib/Kconfig"
1048 source "arch/powerpc/Kconfig.debug"
1050 source "security/Kconfig"
1054 depends on COMPAT && KEYS
1057 source "crypto/Kconfig"
1059 config PPC_LIB_RHEAP
1062 source "arch/powerpc/kvm/Kconfig"