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 HAVE_FTRACE_MCOUNT_RECORD
94 select HAVE_DYNAMIC_FTRACE
95 select HAVE_FUNCTION_TRACER
96 select HAVE_FUNCTION_GRAPH_TRACER
97 select SYSCTL_EXCEPTION_TRACE
98 select ARCH_WANT_OPTIONAL_GPIOLIB
99 select VIRT_TO_BUS if !PPC64
101 select HAVE_IOREMAP_PROT
102 select HAVE_EFFICIENT_UNALIGNED_ACCESS if !CPU_LITTLE_ENDIAN
104 select HAVE_ARCH_KGDB
105 select HAVE_KRETPROBES
106 select HAVE_ARCH_TRACEHOOK
108 select HAVE_MEMBLOCK_NODE_MAP
109 select HAVE_DMA_ATTRS
110 select HAVE_DMA_API_DEBUG
112 select HAVE_DEBUG_KMEMLEAK
113 select GENERIC_ATOMIC64 if PPC32
114 select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
115 select HAVE_PERF_EVENTS
116 select HAVE_REGS_AND_STACK_ACCESS_API
117 select HAVE_HW_BREAKPOINT if PERF_EVENTS && PPC_BOOK3S_64
118 select ARCH_WANT_IPC_PARSE_VERSION
121 select GENERIC_IRQ_SHOW
122 select GENERIC_IRQ_SHOW_LEVEL
123 select IRQ_FORCED_THREADING
124 select HAVE_RCU_TABLE_FREE if SMP
125 select HAVE_SYSCALL_TRACEPOINTS
126 select HAVE_BPF_JIT if PPC64
127 select HAVE_ARCH_JUMP_LABEL
128 select ARCH_HAVE_NMI_SAFE_CMPXCHG
129 select GENERIC_SMP_IDLE_THREAD
130 select GENERIC_CMOS_UPDATE
131 select GENERIC_TIME_VSYSCALL_OLD
132 select GENERIC_CLOCKEVENTS
133 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
134 select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
135 select GENERIC_STRNCPY_FROM_USER
136 select GENERIC_STRNLEN_USER
137 select HAVE_MOD_ARCH_SPECIFIC
138 select MODULES_USE_ELF_RELA
139 select CLONE_BACKWARDS
140 select ARCH_USE_BUILTIN_BSWAP
141 select OLD_SIGSUSPEND
142 select OLD_SIGACTION if PPC32
143 select HAVE_DEBUG_STACKOVERFLOW
144 select HAVE_IRQ_EXIT_ON_IRQ_STACK
145 select ARCH_USE_CMPXCHG_LOCKREF if PPC64
148 def_bool CPU_LITTLE_ENDIAN
161 select COMPAT_BINFMT_ELF
162 select ARCH_WANT_OLD_COMPAT_IPC
163 select COMPAT_OLD_SIGACTION
165 config SYSVIPC_COMPAT
167 depends on COMPAT && SYSVIPC
170 # All PPC32s use generic nvram driver through ppc_md
175 config SCHED_OMIT_FRAME_POINTER
179 config ARCH_MAY_HAVE_PC_FDC
181 default !PPC_PSERIES || PCI
186 config PPC_UDBG_16550
190 config GENERIC_TBSYNC
192 default y if PPC32 && SMP
204 config SYS_SUPPORTS_APM_EMULATION
205 default y if PMAC_APM_EMU
211 Used to allow a board to specify it wants an ePAPR compliant wrapper.
214 config DEFAULT_UIMAGE
217 Used to allow a board to specify it wants a uImage built by default
220 config ARCH_HIBERNATION_POSSIBLE
224 config ARCH_SUSPEND_POSSIBLE
226 depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx || \
227 (PPC_85xx && !PPC_E500MC) || PPC_86xx || PPC_PSERIES \
230 config PPC_DCR_NATIVE
240 depends on PPC_DCR_NATIVE || PPC_DCR_MMIO
243 config PPC_OF_PLATFORM_PCI
246 depends on PPC64 # not supported on 32 bits yet
249 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
252 config ARCH_SUPPORTS_UPROBES
255 config PPC_ADV_DEBUG_REGS
257 depends on 40x || BOOKE
260 config PPC_ADV_DEBUG_IACS
262 depends on PPC_ADV_DEBUG_REGS
266 config PPC_ADV_DEBUG_DACS
268 depends on PPC_ADV_DEBUG_REGS
271 config PPC_ADV_DEBUG_DVCS
273 depends on PPC_ADV_DEBUG_REGS
277 config PPC_ADV_DEBUG_DAC_RANGE
279 depends on PPC_ADV_DEBUG_REGS && 44x
282 config PPC_EMULATE_SSTEP
284 default y if KPROBES || UPROBES || XMON || HAVE_HW_BREAKPOINT
286 source "init/Kconfig"
288 source "kernel/Kconfig.freezer"
290 source "arch/powerpc/sysdev/Kconfig"
291 source "arch/powerpc/platforms/Kconfig"
293 menu "Kernel options"
296 bool "High memory support"
299 source kernel/Kconfig.hz
300 source kernel/Kconfig.preempt
301 source "fs/Kconfig.binfmt"
303 config HUGETLB_PAGE_SIZE_VARIABLE
305 depends on HUGETLB_PAGE
308 config MATH_EMULATION
309 bool "Math emulation"
310 depends on 4xx || 8xx || PPC_MPC832x || BOOKE
312 Some PowerPC chips designed for embedded applications do not have
313 a floating-point unit and therefore do not implement the
314 floating-point instructions in the PowerPC instruction set. If you
315 say Y here, the kernel will include code to emulate a floating-point
316 unit, which will allow programs that use floating-point
319 This is also useful to emulate missing (optional) instructions
320 such as fsqrt on cores that do have an FPU but do not implement
321 them (such as Freescale BookE).
324 prompt "Math emulation options"
325 default MATH_EMULATION_FULL
326 depends on MATH_EMULATION
328 config MATH_EMULATION_FULL
329 bool "Emulate all the floating point instructions"
331 Select this option will enable the kernel to support to emulate
332 all the floating point instructions. If your SoC doesn't have
333 a FPU, you should select this.
335 config MATH_EMULATION_HW_UNIMPLEMENTED
336 bool "Just emulate the FPU unimplemented instructions"
338 Select this if you know there does have a hardware FPU on your
339 SoC, but some floating point instructions are not implemented by that.
343 config PPC_TRANSACTIONAL_MEM
344 bool "Transactional Memory support for POWERPC"
345 depends on PPC_BOOK3S_64
351 Support user-mode Transactional Memory on POWERPC.
357 bool "SWIOTLB support"
361 Support for IO bounce buffering for systems without an IOMMU.
362 This allows us to DMA to the full physical address space on
363 platforms where the size of a physical address is larger
364 than the bus address. Not all platforms support this.
367 bool "Support for enabling/disabling CPUs"
368 depends on SMP && (PPC_PSERIES || \
369 PPC_PMAC || PPC_POWERNV || (PPC_85xx && !PPC_E500MC))
371 Say Y here to be able to disable and re-enable individual
372 CPUs at runtime on SMP machines.
374 Say N if you are unsure.
376 config ARCH_CPU_PROBE_RELEASE
378 depends on HOTPLUG_CPU
380 config ARCH_ENABLE_MEMORY_HOTPLUG
383 config ARCH_HAS_WALK_MEMORY
386 config ARCH_ENABLE_MEMORY_HOTREMOVE
389 config PPC64_SUPPORTS_MEMORY_FAILURE
390 bool "Add support for memory hwpoison"
391 depends on PPC_BOOK3S_64
392 default "y" if PPC_POWERNV
393 select ARCH_SUPPORTS_MEMORY_FAILURE
396 bool "kexec system call"
397 depends on (PPC_BOOK3S || FSL_BOOKE || (44x && !SMP))
399 kexec is a system call that implements the ability to shutdown your
400 current kernel, and to start another kernel. It is like a reboot
401 but it is independent of the system firmware. And like a reboot
402 you can start any kernel with it, not just Linux.
404 The name comes from the similarity to the exec system call.
406 It is an ongoing process to be certain the hardware in a machine
407 is properly shutdown, so do not be surprised if this code does not
408 initially work for you. As of this writing the exact hardware
409 interface is strongly in flux, so no good recommendation can be
413 bool "Build a kdump crash kernel"
414 depends on PPC64 || 6xx || FSL_BOOKE || (44x && !SMP)
415 select RELOCATABLE if PPC64 || 44x || FSL_BOOKE
417 Build a kernel suitable for use as a kdump capture kernel.
418 The same kernel binary can be used as production kernel and dump
422 bool "Firmware-assisted dump"
423 depends on PPC64 && PPC_RTAS && CRASH_DUMP && KEXEC
425 A robust mechanism to get reliable kernel crash dump with
426 assistance from firmware. This approach does not use kexec,
427 instead firmware assists in booting the kdump kernel
428 while preserving memory contents. Firmware-assisted dump
429 is meant to be a kdump replacement offering robustness and
430 speed not possible without system firmware assistance.
435 bool "Distribute interrupts on all CPUs by default"
438 This option gives the kernel permission to distribute IRQs across
439 multiple CPUs. Saying N here will route all IRQs to the first
440 CPU. Generally saying Y is safe, although some problems have been
441 reported with SMP Power Macintoshes with this option enabled.
446 default y if SMP && PPC_PSERIES
452 depends on NEED_MULTIPLE_NODES
454 config ARCH_SELECT_MEMORY_MODEL
458 config ARCH_FLATMEM_ENABLE
460 depends on (PPC64 && !NUMA) || PPC32
462 config ARCH_SPARSEMEM_ENABLE
465 select SPARSEMEM_VMEMMAP_ENABLE
467 config ARCH_SPARSEMEM_DEFAULT
469 depends on (SMP && PPC_PSERIES) || PPC_PS3
471 config SYS_SUPPORTS_HUGETLBFS
476 config ARCH_MEMORY_PROBE
478 depends on MEMORY_HOTPLUG
480 # Some NUMA nodes have memory ranges that span
481 # other nodes. Even though a pfn is valid and
482 # between a node's start and end pfns, it may not
483 # reside on that node. See memmap_init_zone()
485 config NODES_SPAN_OTHER_NODES
487 depends on NEED_MULTIPLE_NODES
489 config PPC_HAS_HASH_64K
495 bool "Using standard binutils settings"
499 Turning this option off allows you to select 256KB PAGE_SIZE on 44x.
500 Note, that kernel will be able to run only those applications,
501 which had been compiled using binutils later than 2.17.50.0.3 with
502 '-zmax-page-size' set to 256K (the default is 64K). Or, if using
503 the older binutils, you can patch them with a trivial patch, which
504 changes the ELF_MAXPAGESIZE definition from 0x10000 to 0x40000.
510 Select the kernel logical page size. Increasing the page size
511 will reduce software overhead at each page boundary, allow
512 hardware prefetch mechanisms to be more effective, and allow
513 larger dma transfers increasing IO efficiency and reducing
514 overhead. However the utilization of memory will increase.
515 For example, each cached file will using a multiple of the
516 page size to hold its contents and the difference between the
517 end of file and the end of page is wasted.
519 Some dedicated systems, such as software raid serving with
520 accelerated calculations, have shown significant increases.
522 If you configure a 64 bit kernel for 64k pages but the
523 processor does not support them, then the kernel will simulate
524 them with 4k pages, loading them on demand, but with the
525 reduced software overhead and larger internal fragmentation.
526 For the 32 bit kernel, a large page option will not be offered
527 unless it is supported by the configured processor.
529 If unsure, choose 4K_PAGES.
535 bool "16k page size" if 44x
538 bool "64k page size" if 44x || PPC_STD_MMU_64 || PPC_BOOK3E_64
539 depends on !PPC_FSL_BOOK3E
540 select PPC_HAS_HASH_64K if PPC_STD_MMU_64
542 config PPC_256K_PAGES
543 bool "256k page size" if 44x
544 depends on !STDBINUTILS
546 Make the page size 256k.
548 As the ELF standard only requires alignment to support page
549 sizes up to 64k, you will need to compile all of your user
550 space applications with a non-standard binutils settings
551 (see the STDBINUTILS description for details).
553 Say N unless you know what you are doing.
557 config FORCE_MAX_ZONEORDER
558 int "Maximum zone order"
559 range 9 64 if PPC64 && PPC_64K_PAGES
560 default "9" if PPC64 && PPC_64K_PAGES
561 range 13 64 if PPC64 && !PPC_64K_PAGES
562 default "13" if PPC64 && !PPC_64K_PAGES
563 range 9 64 if PPC32 && PPC_16K_PAGES
564 default "9" if PPC32 && PPC_16K_PAGES
565 range 7 64 if PPC32 && PPC_64K_PAGES
566 default "7" if PPC32 && PPC_64K_PAGES
567 range 5 64 if PPC32 && PPC_256K_PAGES
568 default "5" if PPC32 && PPC_256K_PAGES
572 The kernel memory allocator divides physically contiguous memory
573 blocks into "zones", where each zone is a power of two number of
574 pages. This option selects the largest power of two that the kernel
575 keeps in the memory allocator. If you need to allocate very large
576 blocks of physically contiguous memory, then you may need to
579 This config option is actually maximum order plus one. For example,
580 a value of 11 means that the largest free memory block is 2^10 pages.
582 The page size is not necessarily 4KB. For example, on 64-bit
583 systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES. Keep
584 this in mind when choosing a value for this option.
586 config PPC_SUBPAGE_PROT
587 bool "Support setting protections for 4k subpages"
588 depends on PPC_STD_MMU_64 && PPC_64K_PAGES
590 This option adds support for a system call to allow user programs
591 to set access permissions (read/write, readonly, or no access)
592 on the 4k subpages of each 64k page.
595 bool "SMT (Hyperthreading) scheduler support"
596 depends on PPC64 && SMP
598 SMT scheduler support improves the CPU scheduler's decision making
599 when dealing with POWER5 cpus at a cost of slightly increased
600 overhead in some places. If unsure say N here.
602 config PPC_DENORMALISATION
603 bool "PowerPC denormalisation exception handling"
604 depends on PPC_BOOK3S_64
605 default "y" if PPC_POWERNV
607 Add support for handling denormalisation of single precision
608 values. Useful for bare metal only. If unsure say Y here.
611 bool "Default bootloader kernel arguments"
614 string "Initial kernel command string"
615 depends on CMDLINE_BOOL
616 default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
618 On some platforms, there is currently no way for the boot loader to
619 pass arguments to the kernel. For these platforms, you can supply
620 some command-line options at build time by entering them here. In
621 most cases you will need to specify the root device here.
624 bool "Always use the default kernel command string"
625 depends on CMDLINE_BOOL
627 Always use the default kernel command string, even if the boot
628 loader passes other arguments to the kernel.
629 This is useful if you cannot or don't want to change the
630 command-line options your boot loader passes to the kernel.
633 string "Additional default image types"
635 List additional targets to be built by the bootwrapper here (separated
636 by spaces). This is useful for targets that depend of device tree
637 files in the .dts directory.
639 Targets in this list will be build as part of the default build
640 target, or when the user does a 'make zImage' or a
641 'make zImage.initrd'.
643 If unsure, leave blank
645 config ARCH_WANTS_FREEZER_CONTROL
649 source kernel/power/Kconfig
652 bool "Enable seccomp to safely compute untrusted bytecode"
656 This kernel feature is useful for number crunching applications
657 that may need to compute untrusted bytecode during their
658 execution. By using pipes or other transports made available to
659 the process as file descriptors supporting the read/write
660 syscalls, it's possible to isolate those applications in
661 their own address space using seccomp. Once seccomp is
662 enabled via /proc/<pid>/seccomp, it cannot be disabled
663 and the task is only allowed to execute a few safe syscalls
664 defined by each seccomp mode.
666 If unsure, say Y. Only embedded should say N here.
677 bool "Support for ISA-bus hardware"
681 Find out whether you have ISA slots on your motherboard. ISA is the
682 name of a bus system, i.e. the way the CPU talks to the other stuff
683 inside your box. If you have an Apple machine, say N here; if you
684 have an IBM RS/6000 or pSeries machine, say Y. If you have an
685 embedded board, consult your board documentation.
691 config NEED_DMA_MAP_STATE
692 def_bool (PPC64 || NOT_COHERENT_CACHE)
694 config NEED_SG_DMA_LENGTH
697 config GENERIC_ISA_DMA
699 depends on ISA_DMA_API
702 config PPC_INDIRECT_PCI
705 default y if 40x || 44x
719 select PPC_INDIRECT_PCI
725 depends on SUSPEND && (PPC_85xx || PPC_86xx)
727 Freescale MPC85xx/MPC86xx power management controller support
728 (suspend/resume). For MPC83xx see platforms/83xx/suspend.c
733 depends on SUSPEND && (44x || 40x)
735 PPC4xx Clock Power Management (CPM) support (suspend/resume).
736 It also enables support for two different idle states (idle-wait
743 bool "Freescale Local Bus support"
746 Enables reporting of errors from the Freescale local bus
747 controller. Also contains some common code used by
748 drivers for specific local bus peripherals.
752 depends on PPC_83xx || QUICC_ENGINE || CPM2
754 Freescale General-purpose Timers support
756 # Yes MCA RS/6000s exist but Linux-PPC does not currently support any
760 # Platforms that what PCI turned unconditionally just do select PCI
761 # in their config node. Platforms that want to choose at config
762 # time should select PPC_PCI_CHOICE
763 config PPC_PCI_CHOICE
767 bool "PCI support" if PPC_PCI_CHOICE
768 default y if !40x && !CPM2 && !8xx && !PPC_83xx \
769 && !PPC_85xx && !PPC_86xx && !GAMECUBE_COMMON
770 default PCI_QSPAN if !4xx && !CPM2 && 8xx
771 select GENERIC_PCI_IOMAP
773 Find out whether your system includes a PCI bus. PCI is the name of
774 a bus system, i.e. the way the CPU talks to the other stuff inside
775 your box. If you say Y here, the kernel will include drivers and
776 infrastructure code to support PCI bus devices.
786 depends on !4xx && !CPM2 && 8xx
789 Say Y here if you have a system based on a Motorola 8xx-series
790 embedded processor with a QSPAN PCI interface, otherwise say N.
794 depends on PCI && 8260
795 select PPC_INDIRECT_PCI
798 source "drivers/pci/pcie/Kconfig"
800 source "drivers/pci/Kconfig"
802 source "drivers/pcmcia/Kconfig"
804 source "drivers/pci/hotplug/Kconfig"
811 tristate "RapidIO support"
812 depends on HAS_RAPIDIO || PCI
814 If you say Y here, the kernel will include drivers and
815 infrastructure code to support RapidIO interconnect devices.
818 bool "Freescale Embedded SRIO Controller support"
819 depends on RAPIDIO = y && HAS_RAPIDIO
822 Include support for RapidIO controller on Freescale embedded
823 processors (MPC8548, MPC8641, etc).
825 source "drivers/rapidio/Kconfig"
829 config NONSTATIC_KERNEL
833 menu "Advanced setup"
836 config ADVANCED_OPTIONS
837 bool "Prompt for advanced kernel configuration options"
839 This option will enable prompting for a variety of advanced kernel
840 configuration options. These options can cause the kernel to not
841 work if they are set incorrectly, but can be used to optimize certain
842 aspects of kernel memory management.
844 Unless you know what you are doing, say N here.
846 comment "Default settings for advanced configuration options are used"
847 depends on !ADVANCED_OPTIONS
849 config LOWMEM_SIZE_BOOL
850 bool "Set maximum low memory"
851 depends on ADVANCED_OPTIONS
853 This option allows you to set the maximum amount of memory which
854 will be used as "low memory", that is, memory which the kernel can
855 access directly, without having to set up a kernel virtual mapping.
856 This can be useful in optimizing the layout of kernel virtual
859 Say N here unless you know what you are doing.
862 hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
865 config LOWMEM_CAM_NUM_BOOL
866 bool "Set number of CAMs to use to map low memory"
867 depends on ADVANCED_OPTIONS && FSL_BOOKE
869 This option allows you to set the maximum number of CAM slots that
870 will be used to map low memory. There are a limited number of slots
871 available and even more limited number that will fit in the L1 MMU.
872 However, using more entries will allow mapping more low memory. This
873 can be useful in optimizing the layout of kernel virtual memory.
875 Say N here unless you know what you are doing.
877 config LOWMEM_CAM_NUM
879 int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL
882 config DYNAMIC_MEMSTART
883 bool "Enable page aligned dynamic load address for kernel"
884 depends on ADVANCED_OPTIONS && FLATMEM && (FSL_BOOKE || 44x)
885 select NONSTATIC_KERNEL
887 This option enables the kernel to be loaded at any page aligned
888 physical address. The kernel creates a mapping from KERNELBASE to
889 the address where the kernel is loaded. The page size here implies
890 the TLB page size of the mapping for kernel on the particular platform.
891 Please refer to the init code for finding the TLB page size.
893 DYNAMIC_MEMSTART is an easy way of implementing pseudo-RELOCATABLE
894 kernel image, where the only restriction is the page aligned kernel
895 load address. When this option is enabled, the compile time physical
896 address CONFIG_PHYSICAL_START is ignored.
898 This option is overridden by CONFIG_RELOCATABLE
901 bool "Build a relocatable kernel"
902 depends on ADVANCED_OPTIONS && FLATMEM && (44x || FSL_BOOKE)
903 select NONSTATIC_KERNEL
905 This builds a kernel image that is capable of running at the
906 location the kernel is loaded at, without any alignment restrictions.
907 This feature is a superset of DYNAMIC_MEMSTART and hence overrides it.
909 One use is for the kexec on panic case where the recovery kernel
910 must live at a different physical address than the primary
913 Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address
914 it has been loaded at and the compile time physical addresses
915 CONFIG_PHYSICAL_START is ignored. However CONFIG_PHYSICAL_START
916 setting can still be useful to bootwrappers that need to know the
917 load address of the kernel (eg. u-boot/mkimage).
919 config RELOCATABLE_PPC32
921 depends on PPC32 && RELOCATABLE
923 config PAGE_OFFSET_BOOL
924 bool "Set custom page offset address"
925 depends on ADVANCED_OPTIONS
927 This option allows you to set the kernel virtual address at which
928 the kernel will map low memory. This can be useful in optimizing
929 the virtual memory layout of the system.
931 Say N here unless you know what you are doing.
934 hex "Virtual address of memory base" if PAGE_OFFSET_BOOL
937 config KERNEL_START_BOOL
938 bool "Set custom kernel base address"
939 depends on ADVANCED_OPTIONS
941 This option allows you to set the kernel virtual address at which
942 the kernel will be loaded. Normally this should match PAGE_OFFSET
943 however there are times (like kdump) that one might not want them
946 Say N here unless you know what you are doing.
949 hex "Virtual address of kernel base" if KERNEL_START_BOOL
950 default PAGE_OFFSET if PAGE_OFFSET_BOOL
951 default "0xc2000000" if CRASH_DUMP && !NONSTATIC_KERNEL
954 config PHYSICAL_START_BOOL
955 bool "Set physical address where the kernel is loaded"
956 depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE
958 This gives the physical address where the kernel is loaded.
960 Say N here unless you know what you are doing.
962 config PHYSICAL_START
963 hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL
964 default "0x02000000" if PPC_STD_MMU && CRASH_DUMP && !NONSTATIC_KERNEL
967 config PHYSICAL_ALIGN
969 default "0x04000000" if FSL_BOOKE
971 This value puts the alignment restrictions on physical address
972 where kernel is loaded and run from. Kernel is compiled for an
973 address which meets above alignment restriction.
975 config TASK_SIZE_BOOL
976 bool "Set custom user task size"
977 depends on ADVANCED_OPTIONS
979 This option allows you to set the amount of virtual address space
980 allocated to user tasks. This can be useful in optimizing the
981 virtual memory layout of the system.
983 Say N here unless you know what you are doing.
986 hex "Size of user task space" if TASK_SIZE_BOOL
987 default "0x80000000" if PPC_8xx
990 config CONSISTENT_SIZE_BOOL
991 bool "Set custom consistent memory pool size"
992 depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
994 This option allows you to set the size of the
995 consistent memory pool. This pool of virtual memory
996 is used to make consistent memory allocations.
998 config CONSISTENT_SIZE
999 hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
1000 default "0x00200000" if NOT_COHERENT_CACHE
1003 bool "Pinned Kernel TLBs (860 ONLY)"
1004 depends on ADVANCED_OPTIONS && 8xx
1009 bool "Build a relocatable kernel"
1010 select NONSTATIC_KERNEL
1012 This builds a kernel image that is capable of running anywhere
1013 in the RMA (real memory area) at any 16k-aligned base address.
1014 The kernel is linked as a position-independent executable (PIE)
1015 and contains dynamic relocations which are processed early
1016 in the bootup process.
1018 One use is for the kexec on panic case where the recovery kernel
1019 must live at a different physical address than the primary
1022 # This value must have zeroes in the bottom 60 bits otherwise lots will break
1025 default "0xc000000000000000"
1028 default "0xc000000000000000"
1029 config PHYSICAL_START
1031 default "0x00000000"
1037 source "net/Kconfig"
1039 source "drivers/Kconfig"
1043 source "arch/powerpc/sysdev/qe_lib/Kconfig"
1045 source "lib/Kconfig"
1047 source "arch/powerpc/Kconfig.debug"
1049 source "security/Kconfig"
1053 depends on COMPAT && KEYS
1056 source "crypto/Kconfig"
1058 config PPC_LIB_RHEAP
1061 source "arch/powerpc/kvm/Kconfig"