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
147 select HAVE_ARCH_AUDITSYSCALL
150 def_bool CPU_LITTLE_ENDIAN
163 select COMPAT_BINFMT_ELF
164 select ARCH_WANT_OLD_COMPAT_IPC
165 select COMPAT_OLD_SIGACTION
167 config SYSVIPC_COMPAT
169 depends on COMPAT && SYSVIPC
172 # All PPC32s use generic nvram driver through ppc_md
177 config SCHED_OMIT_FRAME_POINTER
181 config ARCH_MAY_HAVE_PC_FDC
183 default !PPC_PSERIES || PCI
188 config PPC_UDBG_16550
192 config GENERIC_TBSYNC
194 default y if PPC32 && SMP
206 config SYS_SUPPORTS_APM_EMULATION
207 default y if PMAC_APM_EMU
213 Used to allow a board to specify it wants an ePAPR compliant wrapper.
216 config DEFAULT_UIMAGE
219 Used to allow a board to specify it wants a uImage built by default
222 config ARCH_HIBERNATION_POSSIBLE
226 config ARCH_SUSPEND_POSSIBLE
228 depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx || \
229 (PPC_85xx && !PPC_E500MC) || PPC_86xx || PPC_PSERIES \
232 config PPC_DCR_NATIVE
242 depends on PPC_DCR_NATIVE || PPC_DCR_MMIO
245 config PPC_OF_PLATFORM_PCI
248 depends on PPC64 # not supported on 32 bits yet
251 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
254 config ARCH_SUPPORTS_UPROBES
257 config PPC_ADV_DEBUG_REGS
259 depends on 40x || BOOKE
262 config PPC_ADV_DEBUG_IACS
264 depends on PPC_ADV_DEBUG_REGS
268 config PPC_ADV_DEBUG_DACS
270 depends on PPC_ADV_DEBUG_REGS
273 config PPC_ADV_DEBUG_DVCS
275 depends on PPC_ADV_DEBUG_REGS
279 config PPC_ADV_DEBUG_DAC_RANGE
281 depends on PPC_ADV_DEBUG_REGS && 44x
284 config PPC_EMULATE_SSTEP
286 default y if KPROBES || UPROBES || XMON || HAVE_HW_BREAKPOINT
288 source "init/Kconfig"
290 source "kernel/Kconfig.freezer"
292 source "arch/powerpc/sysdev/Kconfig"
293 source "arch/powerpc/platforms/Kconfig"
295 menu "Kernel options"
298 bool "High memory support"
301 source kernel/Kconfig.hz
302 source kernel/Kconfig.preempt
303 source "fs/Kconfig.binfmt"
305 config HUGETLB_PAGE_SIZE_VARIABLE
307 depends on HUGETLB_PAGE
310 config MATH_EMULATION
311 bool "Math emulation"
312 depends on 4xx || 8xx || PPC_MPC832x || BOOKE
314 Some PowerPC chips designed for embedded applications do not have
315 a floating-point unit and therefore do not implement the
316 floating-point instructions in the PowerPC instruction set. If you
317 say Y here, the kernel will include code to emulate a floating-point
318 unit, which will allow programs that use floating-point
321 This is also useful to emulate missing (optional) instructions
322 such as fsqrt on cores that do have an FPU but do not implement
323 them (such as Freescale BookE).
326 prompt "Math emulation options"
327 default MATH_EMULATION_FULL
328 depends on MATH_EMULATION
330 config MATH_EMULATION_FULL
331 bool "Emulate all the floating point instructions"
333 Select this option will enable the kernel to support to emulate
334 all the floating point instructions. If your SoC doesn't have
335 a FPU, you should select this.
337 config MATH_EMULATION_HW_UNIMPLEMENTED
338 bool "Just emulate the FPU unimplemented instructions"
340 Select this if you know there does have a hardware FPU on your
341 SoC, but some floating point instructions are not implemented by that.
345 config PPC_TRANSACTIONAL_MEM
346 bool "Transactional Memory support for POWERPC"
347 depends on PPC_BOOK3S_64
353 Support user-mode Transactional Memory on POWERPC.
359 bool "SWIOTLB support"
363 Support for IO bounce buffering for systems without an IOMMU.
364 This allows us to DMA to the full physical address space on
365 platforms where the size of a physical address is larger
366 than the bus address. Not all platforms support this.
369 bool "Support for enabling/disabling CPUs"
370 depends on SMP && (PPC_PSERIES || \
371 PPC_PMAC || PPC_POWERNV || (PPC_85xx && !PPC_E500MC))
373 Say Y here to be able to disable and re-enable individual
374 CPUs at runtime on SMP machines.
376 Say N if you are unsure.
378 config ARCH_CPU_PROBE_RELEASE
380 depends on HOTPLUG_CPU
382 config ARCH_ENABLE_MEMORY_HOTPLUG
385 config ARCH_HAS_WALK_MEMORY
388 config ARCH_ENABLE_MEMORY_HOTREMOVE
391 config PPC64_SUPPORTS_MEMORY_FAILURE
392 bool "Add support for memory hwpoison"
393 depends on PPC_BOOK3S_64
394 default "y" if PPC_POWERNV
395 select ARCH_SUPPORTS_MEMORY_FAILURE
398 bool "kexec system call"
399 depends on (PPC_BOOK3S || FSL_BOOKE || (44x && !SMP))
401 kexec is a system call that implements the ability to shutdown your
402 current kernel, and to start another kernel. It is like a reboot
403 but it is independent of the system firmware. And like a reboot
404 you can start any kernel with it, not just Linux.
406 The name comes from the similarity to the exec system call.
408 It is an ongoing process to be certain the hardware in a machine
409 is properly shutdown, so do not be surprised if this code does not
410 initially work for you. As of this writing the exact hardware
411 interface is strongly in flux, so no good recommendation can be
415 bool "Build a kdump crash kernel"
416 depends on PPC64 || 6xx || FSL_BOOKE || (44x && !SMP)
417 select RELOCATABLE if PPC64 || 44x || FSL_BOOKE
419 Build a kernel suitable for use as a kdump capture kernel.
420 The same kernel binary can be used as production kernel and dump
424 bool "Firmware-assisted dump"
425 depends on PPC64 && PPC_RTAS && CRASH_DUMP && KEXEC
427 A robust mechanism to get reliable kernel crash dump with
428 assistance from firmware. This approach does not use kexec,
429 instead firmware assists in booting the kdump kernel
430 while preserving memory contents. Firmware-assisted dump
431 is meant to be a kdump replacement offering robustness and
432 speed not possible without system firmware assistance.
437 bool "Distribute interrupts on all CPUs by default"
440 This option gives the kernel permission to distribute IRQs across
441 multiple CPUs. Saying N here will route all IRQs to the first
442 CPU. Generally saying Y is safe, although some problems have been
443 reported with SMP Power Macintoshes with this option enabled.
448 default y if SMP && PPC_PSERIES
454 depends on NEED_MULTIPLE_NODES
456 config ARCH_SELECT_MEMORY_MODEL
460 config ARCH_FLATMEM_ENABLE
462 depends on (PPC64 && !NUMA) || PPC32
464 config ARCH_SPARSEMEM_ENABLE
467 select SPARSEMEM_VMEMMAP_ENABLE
469 config ARCH_SPARSEMEM_DEFAULT
471 depends on (SMP && PPC_PSERIES) || PPC_PS3
473 config SYS_SUPPORTS_HUGETLBFS
478 config ARCH_MEMORY_PROBE
480 depends on MEMORY_HOTPLUG
482 # Some NUMA nodes have memory ranges that span
483 # other nodes. Even though a pfn is valid and
484 # between a node's start and end pfns, it may not
485 # reside on that node. See memmap_init_zone()
487 config NODES_SPAN_OTHER_NODES
489 depends on NEED_MULTIPLE_NODES
491 config PPC_HAS_HASH_64K
497 bool "Using standard binutils settings"
501 Turning this option off allows you to select 256KB PAGE_SIZE on 44x.
502 Note, that kernel will be able to run only those applications,
503 which had been compiled using binutils later than 2.17.50.0.3 with
504 '-zmax-page-size' set to 256K (the default is 64K). Or, if using
505 the older binutils, you can patch them with a trivial patch, which
506 changes the ELF_MAXPAGESIZE definition from 0x10000 to 0x40000.
512 Select the kernel logical page size. Increasing the page size
513 will reduce software overhead at each page boundary, allow
514 hardware prefetch mechanisms to be more effective, and allow
515 larger dma transfers increasing IO efficiency and reducing
516 overhead. However the utilization of memory will increase.
517 For example, each cached file will using a multiple of the
518 page size to hold its contents and the difference between the
519 end of file and the end of page is wasted.
521 Some dedicated systems, such as software raid serving with
522 accelerated calculations, have shown significant increases.
524 If you configure a 64 bit kernel for 64k pages but the
525 processor does not support them, then the kernel will simulate
526 them with 4k pages, loading them on demand, but with the
527 reduced software overhead and larger internal fragmentation.
528 For the 32 bit kernel, a large page option will not be offered
529 unless it is supported by the configured processor.
531 If unsure, choose 4K_PAGES.
537 bool "16k page size" if 44x
540 bool "64k page size" if 44x || PPC_STD_MMU_64 || PPC_BOOK3E_64
541 depends on !PPC_FSL_BOOK3E
542 select PPC_HAS_HASH_64K if PPC_STD_MMU_64
544 config PPC_256K_PAGES
545 bool "256k page size" if 44x
546 depends on !STDBINUTILS
548 Make the page size 256k.
550 As the ELF standard only requires alignment to support page
551 sizes up to 64k, you will need to compile all of your user
552 space applications with a non-standard binutils settings
553 (see the STDBINUTILS description for details).
555 Say N unless you know what you are doing.
559 config FORCE_MAX_ZONEORDER
560 int "Maximum zone order"
561 range 9 64 if PPC64 && PPC_64K_PAGES
562 default "9" if PPC64 && PPC_64K_PAGES
563 range 13 64 if PPC64 && !PPC_64K_PAGES
564 default "13" if PPC64 && !PPC_64K_PAGES
565 range 9 64 if PPC32 && PPC_16K_PAGES
566 default "9" if PPC32 && PPC_16K_PAGES
567 range 7 64 if PPC32 && PPC_64K_PAGES
568 default "7" if PPC32 && PPC_64K_PAGES
569 range 5 64 if PPC32 && PPC_256K_PAGES
570 default "5" if PPC32 && PPC_256K_PAGES
574 The kernel memory allocator divides physically contiguous memory
575 blocks into "zones", where each zone is a power of two number of
576 pages. This option selects the largest power of two that the kernel
577 keeps in the memory allocator. If you need to allocate very large
578 blocks of physically contiguous memory, then you may need to
581 This config option is actually maximum order plus one. For example,
582 a value of 11 means that the largest free memory block is 2^10 pages.
584 The page size is not necessarily 4KB. For example, on 64-bit
585 systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES. Keep
586 this in mind when choosing a value for this option.
588 config PPC_SUBPAGE_PROT
589 bool "Support setting protections for 4k subpages"
590 depends on PPC_STD_MMU_64 && PPC_64K_PAGES
592 This option adds support for a system call to allow user programs
593 to set access permissions (read/write, readonly, or no access)
594 on the 4k subpages of each 64k page.
597 bool "SMT (Hyperthreading) scheduler support"
598 depends on PPC64 && SMP
600 SMT scheduler support improves the CPU scheduler's decision making
601 when dealing with POWER5 cpus at a cost of slightly increased
602 overhead in some places. If unsure say N here.
604 config PPC_DENORMALISATION
605 bool "PowerPC denormalisation exception handling"
606 depends on PPC_BOOK3S_64
607 default "y" if PPC_POWERNV
609 Add support for handling denormalisation of single precision
610 values. Useful for bare metal only. If unsure say Y here.
613 bool "Default bootloader kernel arguments"
616 string "Initial kernel command string"
617 depends on CMDLINE_BOOL
618 default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
620 On some platforms, there is currently no way for the boot loader to
621 pass arguments to the kernel. For these platforms, you can supply
622 some command-line options at build time by entering them here. In
623 most cases you will need to specify the root device here.
626 bool "Always use the default kernel command string"
627 depends on CMDLINE_BOOL
629 Always use the default kernel command string, even if the boot
630 loader passes other arguments to the kernel.
631 This is useful if you cannot or don't want to change the
632 command-line options your boot loader passes to the kernel.
635 string "Additional default image types"
637 List additional targets to be built by the bootwrapper here (separated
638 by spaces). This is useful for targets that depend of device tree
639 files in the .dts directory.
641 Targets in this list will be build as part of the default build
642 target, or when the user does a 'make zImage' or a
643 'make zImage.initrd'.
645 If unsure, leave blank
647 config ARCH_WANTS_FREEZER_CONTROL
651 source kernel/power/Kconfig
654 bool "Enable seccomp to safely compute untrusted bytecode"
658 This kernel feature is useful for number crunching applications
659 that may need to compute untrusted bytecode during their
660 execution. By using pipes or other transports made available to
661 the process as file descriptors supporting the read/write
662 syscalls, it's possible to isolate those applications in
663 their own address space using seccomp. Once seccomp is
664 enabled via /proc/<pid>/seccomp, it cannot be disabled
665 and the task is only allowed to execute a few safe syscalls
666 defined by each seccomp mode.
668 If unsure, say Y. Only embedded should say N here.
679 bool "Support for ISA-bus hardware"
683 Find out whether you have ISA slots on your motherboard. ISA is the
684 name of a bus system, i.e. the way the CPU talks to the other stuff
685 inside your box. If you have an Apple machine, say N here; if you
686 have an IBM RS/6000 or pSeries machine, say Y. If you have an
687 embedded board, consult your board documentation.
693 config NEED_DMA_MAP_STATE
694 def_bool (PPC64 || NOT_COHERENT_CACHE)
696 config NEED_SG_DMA_LENGTH
699 config GENERIC_ISA_DMA
701 depends on ISA_DMA_API
704 config PPC_INDIRECT_PCI
707 default y if 40x || 44x
721 select PPC_INDIRECT_PCI
727 depends on SUSPEND && (PPC_85xx || PPC_86xx)
729 Freescale MPC85xx/MPC86xx power management controller support
730 (suspend/resume). For MPC83xx see platforms/83xx/suspend.c
735 depends on SUSPEND && (44x || 40x)
737 PPC4xx Clock Power Management (CPM) support (suspend/resume).
738 It also enables support for two different idle states (idle-wait
745 bool "Freescale Local Bus support"
748 Enables reporting of errors from the Freescale local bus
749 controller. Also contains some common code used by
750 drivers for specific local bus peripherals.
754 depends on PPC_83xx || QUICC_ENGINE || CPM2
756 Freescale General-purpose Timers support
758 # Yes MCA RS/6000s exist but Linux-PPC does not currently support any
762 # Platforms that what PCI turned unconditionally just do select PCI
763 # in their config node. Platforms that want to choose at config
764 # time should select PPC_PCI_CHOICE
765 config PPC_PCI_CHOICE
769 bool "PCI support" if PPC_PCI_CHOICE
770 default y if !40x && !CPM2 && !8xx && !PPC_83xx \
771 && !PPC_85xx && !PPC_86xx && !GAMECUBE_COMMON
772 default PCI_QSPAN if !4xx && !CPM2 && 8xx
773 select GENERIC_PCI_IOMAP
775 Find out whether your system includes a PCI bus. PCI is the name of
776 a bus system, i.e. the way the CPU talks to the other stuff inside
777 your box. If you say Y here, the kernel will include drivers and
778 infrastructure code to support PCI bus devices.
788 depends on !4xx && !CPM2 && 8xx
791 Say Y here if you have a system based on a Motorola 8xx-series
792 embedded processor with a QSPAN PCI interface, otherwise say N.
796 depends on PCI && 8260
797 select PPC_INDIRECT_PCI
800 source "drivers/pci/pcie/Kconfig"
802 source "drivers/pci/Kconfig"
804 source "drivers/pcmcia/Kconfig"
806 source "drivers/pci/hotplug/Kconfig"
813 tristate "RapidIO support"
814 depends on HAS_RAPIDIO || PCI
816 If you say Y here, the kernel will include drivers and
817 infrastructure code to support RapidIO interconnect devices.
820 bool "Freescale Embedded SRIO Controller support"
821 depends on RAPIDIO = y && HAS_RAPIDIO
824 Include support for RapidIO controller on Freescale embedded
825 processors (MPC8548, MPC8641, etc).
827 source "drivers/rapidio/Kconfig"
831 config NONSTATIC_KERNEL
835 menu "Advanced setup"
838 config ADVANCED_OPTIONS
839 bool "Prompt for advanced kernel configuration options"
841 This option will enable prompting for a variety of advanced kernel
842 configuration options. These options can cause the kernel to not
843 work if they are set incorrectly, but can be used to optimize certain
844 aspects of kernel memory management.
846 Unless you know what you are doing, say N here.
848 comment "Default settings for advanced configuration options are used"
849 depends on !ADVANCED_OPTIONS
851 config LOWMEM_SIZE_BOOL
852 bool "Set maximum low memory"
853 depends on ADVANCED_OPTIONS
855 This option allows you to set the maximum amount of memory which
856 will be used as "low memory", that is, memory which the kernel can
857 access directly, without having to set up a kernel virtual mapping.
858 This can be useful in optimizing the layout of kernel virtual
861 Say N here unless you know what you are doing.
864 hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
867 config LOWMEM_CAM_NUM_BOOL
868 bool "Set number of CAMs to use to map low memory"
869 depends on ADVANCED_OPTIONS && FSL_BOOKE
871 This option allows you to set the maximum number of CAM slots that
872 will be used to map low memory. There are a limited number of slots
873 available and even more limited number that will fit in the L1 MMU.
874 However, using more entries will allow mapping more low memory. This
875 can be useful in optimizing the layout of kernel virtual memory.
877 Say N here unless you know what you are doing.
879 config LOWMEM_CAM_NUM
881 int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL
884 config DYNAMIC_MEMSTART
885 bool "Enable page aligned dynamic load address for kernel"
886 depends on ADVANCED_OPTIONS && FLATMEM && (FSL_BOOKE || 44x)
887 select NONSTATIC_KERNEL
889 This option enables the kernel to be loaded at any page aligned
890 physical address. The kernel creates a mapping from KERNELBASE to
891 the address where the kernel is loaded. The page size here implies
892 the TLB page size of the mapping for kernel on the particular platform.
893 Please refer to the init code for finding the TLB page size.
895 DYNAMIC_MEMSTART is an easy way of implementing pseudo-RELOCATABLE
896 kernel image, where the only restriction is the page aligned kernel
897 load address. When this option is enabled, the compile time physical
898 address CONFIG_PHYSICAL_START is ignored.
900 This option is overridden by CONFIG_RELOCATABLE
903 bool "Build a relocatable kernel"
904 depends on ADVANCED_OPTIONS && FLATMEM && (44x || FSL_BOOKE)
905 select NONSTATIC_KERNEL
907 This builds a kernel image that is capable of running at the
908 location the kernel is loaded at, without any alignment restrictions.
909 This feature is a superset of DYNAMIC_MEMSTART and hence overrides it.
911 One use is for the kexec on panic case where the recovery kernel
912 must live at a different physical address than the primary
915 Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address
916 it has been loaded at and the compile time physical addresses
917 CONFIG_PHYSICAL_START is ignored. However CONFIG_PHYSICAL_START
918 setting can still be useful to bootwrappers that need to know the
919 load address of the kernel (eg. u-boot/mkimage).
921 config RELOCATABLE_PPC32
923 depends on PPC32 && RELOCATABLE
925 config PAGE_OFFSET_BOOL
926 bool "Set custom page offset address"
927 depends on ADVANCED_OPTIONS
929 This option allows you to set the kernel virtual address at which
930 the kernel will map low memory. This can be useful in optimizing
931 the virtual memory layout of the system.
933 Say N here unless you know what you are doing.
936 hex "Virtual address of memory base" if PAGE_OFFSET_BOOL
939 config KERNEL_START_BOOL
940 bool "Set custom kernel base address"
941 depends on ADVANCED_OPTIONS
943 This option allows you to set the kernel virtual address at which
944 the kernel will be loaded. Normally this should match PAGE_OFFSET
945 however there are times (like kdump) that one might not want them
948 Say N here unless you know what you are doing.
951 hex "Virtual address of kernel base" if KERNEL_START_BOOL
952 default PAGE_OFFSET if PAGE_OFFSET_BOOL
953 default "0xc2000000" if CRASH_DUMP && !NONSTATIC_KERNEL
956 config PHYSICAL_START_BOOL
957 bool "Set physical address where the kernel is loaded"
958 depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE
960 This gives the physical address where the kernel is loaded.
962 Say N here unless you know what you are doing.
964 config PHYSICAL_START
965 hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL
966 default "0x02000000" if PPC_STD_MMU && CRASH_DUMP && !NONSTATIC_KERNEL
969 config PHYSICAL_ALIGN
971 default "0x04000000" if FSL_BOOKE
973 This value puts the alignment restrictions on physical address
974 where kernel is loaded and run from. Kernel is compiled for an
975 address which meets above alignment restriction.
977 config TASK_SIZE_BOOL
978 bool "Set custom user task size"
979 depends on ADVANCED_OPTIONS
981 This option allows you to set the amount of virtual address space
982 allocated to user tasks. This can be useful in optimizing the
983 virtual memory layout of the system.
985 Say N here unless you know what you are doing.
988 hex "Size of user task space" if TASK_SIZE_BOOL
989 default "0x80000000" if PPC_8xx
992 config CONSISTENT_SIZE_BOOL
993 bool "Set custom consistent memory pool size"
994 depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
996 This option allows you to set the size of the
997 consistent memory pool. This pool of virtual memory
998 is used to make consistent memory allocations.
1000 config CONSISTENT_SIZE
1001 hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
1002 default "0x00200000" if NOT_COHERENT_CACHE
1005 bool "Pinned Kernel TLBs (860 ONLY)"
1006 depends on ADVANCED_OPTIONS && 8xx
1011 bool "Build a relocatable kernel"
1012 select NONSTATIC_KERNEL
1014 This builds a kernel image that is capable of running anywhere
1015 in the RMA (real memory area) at any 16k-aligned base address.
1016 The kernel is linked as a position-independent executable (PIE)
1017 and contains dynamic relocations which are processed early
1018 in the bootup process.
1020 One use is for the kexec on panic case where the recovery kernel
1021 must live at a different physical address than the primary
1024 # This value must have zeroes in the bottom 60 bits otherwise lots will break
1027 default "0xc000000000000000"
1030 default "0xc000000000000000"
1031 config PHYSICAL_START
1033 default "0x00000000"
1039 source "net/Kconfig"
1041 source "drivers/Kconfig"
1045 source "arch/powerpc/sysdev/qe_lib/Kconfig"
1047 source "lib/Kconfig"
1049 source "arch/powerpc/Kconfig.debug"
1051 source "security/Kconfig"
1055 depends on COMPAT && KEYS
1058 source "crypto/Kconfig"
1060 config PPC_LIB_RHEAP
1063 source "arch/powerpc/kvm/Kconfig"