1 source "arch/powerpc/platforms/Kconfig.cputype"
15 config ARCH_PHYS_ADDR_T_64BIT
16 def_bool PPC64 || PHYS_64BIT
18 config ARCH_DMA_ADDR_T_64BIT
19 def_bool ARCH_PHYS_ADDR_T_64BIT
25 config HAVE_SETUP_PER_CPU_AREA
28 config NEED_PER_CPU_EMBED_FIRST_CHUNK
32 int "Number of virtual interrupt numbers"
36 This defines the number of virtual interrupt numbers the kernel
37 can manage. Virtual interrupt numbers are what you see in
38 /proc/interrupts. If you configure your system to have too few,
39 drivers will fail to load or worse - handle with care.
41 config STACKTRACE_SUPPORT
45 config TRACE_IRQFLAGS_SUPPORT
49 config LOCKDEP_SUPPORT
53 config RWSEM_GENERIC_SPINLOCK
56 config RWSEM_XCHGADD_ALGORITHM
60 config GENERIC_LOCKBREAK
63 depends on SMP && PREEMPT
65 config ARCH_HAS_ILOG2_U32
69 config ARCH_HAS_ILOG2_U64
73 config GENERIC_HWEIGHT
77 config ARCH_HAS_DMA_SET_COHERENT_MASK
83 select BUILDTIME_EXTABLE_SORT
84 select ARCH_MIGHT_HAVE_PC_PARPORT
85 select ARCH_MIGHT_HAVE_PC_SERIO
87 select ARCH_HAS_ELF_RANDOMIZE
89 select OF_EARLY_FLATTREE
90 select OF_RESERVED_MEM
91 select HAVE_FTRACE_MCOUNT_RECORD
92 select HAVE_DYNAMIC_FTRACE
93 select HAVE_DYNAMIC_FTRACE_WITH_REGS if MPROFILE_KERNEL
94 select HAVE_FUNCTION_TRACER
95 select HAVE_FUNCTION_GRAPH_TRACER
96 select SYSCTL_EXCEPTION_TRACE
97 select VIRT_TO_BUS if !PPC64
99 select HAVE_IOREMAP_PROT
100 select HAVE_EFFICIENT_UNALIGNED_ACCESS if !(CPU_LITTLE_ENDIAN && POWER7_CPU)
102 select HAVE_ARCH_KGDB
103 select HAVE_KRETPROBES
104 select HAVE_ARCH_TRACEHOOK
106 select HAVE_MEMBLOCK_NODE_MAP
107 select HAVE_DMA_API_DEBUG
109 select HAVE_DEBUG_KMEMLEAK
110 select ARCH_HAS_SG_CHAIN
111 select GENERIC_ATOMIC64 if PPC32
112 select HAVE_PERF_EVENTS
113 select HAVE_PERF_REGS
114 select HAVE_PERF_USER_STACK_DUMP
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_CBPF_JIT if !PPC64
126 select HAVE_EBPF_JIT if PPC64
127 select HAVE_ARCH_JUMP_LABEL
128 select ARCH_HAVE_NMI_SAFE_CMPXCHG
129 select ARCH_HAS_GCOV_PROFILE_ALL
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
148 select ARCH_SUPPORTS_ATOMIC_RMW
149 select DCACHE_WORD_ACCESS if PPC64 && CPU_LITTLE_ENDIAN
151 select HAVE_GENERIC_RCU_GUP
152 select HAVE_PERF_EVENTS_NMI if PPC64
153 select HAVE_NMI if PERF_EVENTS
155 select EDAC_ATOMIC_SCRUB
156 select ARCH_HAS_DMA_SET_COHERENT_MASK
157 select ARCH_HAS_DEVMEM_IS_ALLOWED
158 select HAVE_ARCH_SECCOMP_FILTER
159 select ARCH_HAS_UBSAN_SANITIZE_ALL
160 select ARCH_SUPPORTS_DEFERRED_STRUCT_PAGE_INIT
161 select HAVE_LIVEPATCH if HAVE_DYNAMIC_FTRACE_WITH_REGS
162 select GENERIC_CPU_AUTOPROBE
163 select HAVE_VIRT_CPU_ACCOUNTING
164 select ARCH_HAS_SCALED_CPUTIME if VIRT_CPU_ACCOUNTING_NATIVE
165 select HAVE_ARCH_HARDENED_USERCOPY
166 select HAVE_KERNEL_GZIP
167 select HAVE_CC_STACKPROTECTOR
168 select HAVE_CONTEXT_TRACKING if PPC64
184 select COMPAT_BINFMT_ELF
185 select ARCH_WANT_OLD_COMPAT_IPC
186 select COMPAT_OLD_SIGACTION
188 config SYSVIPC_COMPAT
190 depends on COMPAT && SYSVIPC
193 # All PPC32s use generic nvram driver through ppc_md
198 config SCHED_OMIT_FRAME_POINTER
202 config ARCH_MAY_HAVE_PC_FDC
206 config PPC_UDBG_16550
210 config GENERIC_TBSYNC
212 default y if PPC32 && SMP
224 config SYS_SUPPORTS_APM_EMULATION
225 default y if PMAC_APM_EMU
231 Used to allow a board to specify it wants an ePAPR compliant wrapper.
234 config DEFAULT_UIMAGE
237 Used to allow a board to specify it wants a uImage built by default
240 config ARCH_HIBERNATION_POSSIBLE
244 config ARCH_SUSPEND_POSSIBLE
246 depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx || \
247 (PPC_85xx && !PPC_E500MC) || PPC_86xx || PPC_PSERIES \
250 config PPC_DCR_NATIVE
260 depends on PPC_DCR_NATIVE || PPC_DCR_MMIO
263 config PPC_OF_PLATFORM_PCI
266 depends on PPC64 # not supported on 32 bits yet
269 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
270 depends on PPC32 || PPC_STD_MMU_64
273 config ARCH_SUPPORTS_UPROBES
276 config PPC_ADV_DEBUG_REGS
278 depends on 40x || BOOKE
281 config PPC_ADV_DEBUG_IACS
283 depends on PPC_ADV_DEBUG_REGS
287 config PPC_ADV_DEBUG_DACS
289 depends on PPC_ADV_DEBUG_REGS
292 config PPC_ADV_DEBUG_DVCS
294 depends on PPC_ADV_DEBUG_REGS
298 config PPC_ADV_DEBUG_DAC_RANGE
300 depends on PPC_ADV_DEBUG_REGS && 44x
303 config PPC_EMULATE_SSTEP
305 default y if KPROBES || UPROBES || XMON || HAVE_HW_BREAKPOINT
311 config PGTABLE_LEVELS
314 default 3 if PPC_64K_PAGES && !PPC_BOOK3S_64
317 source "init/Kconfig"
319 source "kernel/Kconfig.freezer"
321 source "arch/powerpc/sysdev/Kconfig"
322 source "arch/powerpc/platforms/Kconfig"
324 menu "Kernel options"
327 bool "High memory support"
330 source kernel/Kconfig.hz
331 source kernel/Kconfig.preempt
332 source "fs/Kconfig.binfmt"
334 config HUGETLB_PAGE_SIZE_VARIABLE
336 depends on HUGETLB_PAGE
339 config MATH_EMULATION
340 bool "Math emulation"
341 depends on 4xx || 8xx || PPC_MPC832x || BOOKE
343 Some PowerPC chips designed for embedded applications do not have
344 a floating-point unit and therefore do not implement the
345 floating-point instructions in the PowerPC instruction set. If you
346 say Y here, the kernel will include code to emulate a floating-point
347 unit, which will allow programs that use floating-point
350 This is also useful to emulate missing (optional) instructions
351 such as fsqrt on cores that do have an FPU but do not implement
352 them (such as Freescale BookE).
355 prompt "Math emulation options"
356 default MATH_EMULATION_FULL
357 depends on MATH_EMULATION
359 config MATH_EMULATION_FULL
360 bool "Emulate all the floating point instructions"
362 Select this option will enable the kernel to support to emulate
363 all the floating point instructions. If your SoC doesn't have
364 a FPU, you should select this.
366 config MATH_EMULATION_HW_UNIMPLEMENTED
367 bool "Just emulate the FPU unimplemented instructions"
369 Select this if you know there does have a hardware FPU on your
370 SoC, but some floating point instructions are not implemented by that.
374 config PPC_TRANSACTIONAL_MEM
375 bool "Transactional Memory support for POWERPC"
376 depends on PPC_BOOK3S_64
382 Support user-mode Transactional Memory on POWERPC.
384 config DISABLE_MPROFILE_KERNEL
385 bool "Disable use of mprofile-kernel for kernel tracing"
386 depends on PPC64 && CPU_LITTLE_ENDIAN
389 Selecting this options disables use of the mprofile-kernel ABI for
390 kernel tracing. That will cause options such as live patching
391 (CONFIG_LIVEPATCH) which depend on CONFIG_DYNAMIC_FTRACE_WITH_REGS to
394 If you have a toolchain which supports mprofile-kernel, then you can
395 enable this. Otherwise leave it disabled. If you're not sure, say
398 config MPROFILE_KERNEL
399 depends on PPC64 && CPU_LITTLE_ENDIAN
400 def_bool !DISABLE_MPROFILE_KERNEL
402 config USE_THIN_ARCHIVES
403 bool "Build the kernel using thin archives"
407 Build the kernel using thin archives.
408 If you're unsure say N.
414 bool "SWIOTLB support"
418 Support for IO bounce buffering for systems without an IOMMU.
419 This allows us to DMA to the full physical address space on
420 platforms where the size of a physical address is larger
421 than the bus address. Not all platforms support this.
424 bool "Support for enabling/disabling CPUs"
425 depends on SMP && (PPC_PSERIES || \
426 PPC_PMAC || PPC_POWERNV || FSL_SOC_BOOKE)
428 Say Y here to be able to disable and re-enable individual
429 CPUs at runtime on SMP machines.
431 Say N if you are unsure.
433 config ARCH_CPU_PROBE_RELEASE
435 depends on HOTPLUG_CPU
437 config ARCH_ENABLE_MEMORY_HOTPLUG
440 config ARCH_HAS_WALK_MEMORY
443 config ARCH_ENABLE_MEMORY_HOTREMOVE
446 config PPC64_SUPPORTS_MEMORY_FAILURE
447 bool "Add support for memory hwpoison"
448 depends on PPC_BOOK3S_64
449 default "y" if PPC_POWERNV
450 select ARCH_SUPPORTS_MEMORY_FAILURE
453 bool "kexec system call"
454 depends on (PPC_BOOK3S || FSL_BOOKE || (44x && !SMP)) || PPC_BOOK3E
457 kexec is a system call that implements the ability to shutdown your
458 current kernel, and to start another kernel. It is like a reboot
459 but it is independent of the system firmware. And like a reboot
460 you can start any kernel with it, not just Linux.
462 The name comes from the similarity to the exec system call.
464 It is an ongoing process to be certain the hardware in a machine
465 is properly shutdown, so do not be surprised if this code does not
466 initially work for you. As of this writing the exact hardware
467 interface is strongly in flux, so no good recommendation can be
471 bool "kexec file based system call"
473 select HAVE_IMA_KEXEC
477 depends on CRYPTO_SHA256=y
479 This is a new version of the kexec system call. This call is
480 file based and takes in file descriptors as system call arguments
481 for kernel and initramfs as opposed to a list of segments as is the
482 case for the older kexec call.
485 bool "Build a relocatable kernel"
486 depends on (PPC64 && !COMPILE_TEST) || (FLATMEM && (44x || FSL_BOOKE))
487 select NONSTATIC_KERNEL
489 This builds a kernel image that is capable of running at the
490 location the kernel is loaded at. For ppc32, there is no any
491 alignment restrictions, and this feature is a superset of
492 DYNAMIC_MEMSTART and hence overrides it. For ppc64, we should use
493 16k-aligned base address. The kernel is linked as a
494 position-independent executable (PIE) and contains dynamic relocations
495 which are processed early in the bootup process.
497 One use is for the kexec on panic case where the recovery kernel
498 must live at a different physical address than the primary
501 Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address
502 it has been loaded at and the compile time physical addresses
503 CONFIG_PHYSICAL_START is ignored. However CONFIG_PHYSICAL_START
504 setting can still be useful to bootwrappers that need to know the
505 load address of the kernel (eg. u-boot/mkimage).
507 config RELOCATABLE_TEST
508 bool "Test relocatable kernel"
509 depends on (PPC64 && RELOCATABLE)
512 This runs the relocatable kernel at the address it was initially
513 loaded at, which tends to be non-zero and therefore test the
517 bool "Build a kdump crash kernel"
518 depends on PPC64 || 6xx || FSL_BOOKE || (44x && !SMP)
519 select RELOCATABLE if (PPC64 && !COMPILE_TEST) || 44x || FSL_BOOKE
521 Build a kernel suitable for use as a kdump capture kernel.
522 The same kernel binary can be used as production kernel and dump
526 bool "Firmware-assisted dump"
527 depends on PPC64 && PPC_RTAS && CRASH_DUMP && KEXEC_CORE
529 A robust mechanism to get reliable kernel crash dump with
530 assistance from firmware. This approach does not use kexec,
531 instead firmware assists in booting the kdump kernel
532 while preserving memory contents. Firmware-assisted dump
533 is meant to be a kdump replacement offering robustness and
534 speed not possible without system firmware assistance.
539 bool "Distribute interrupts on all CPUs by default"
542 This option gives the kernel permission to distribute IRQs across
543 multiple CPUs. Saying N here will route all IRQs to the first
544 CPU. Generally saying Y is safe, although some problems have been
545 reported with SMP Power Macintoshes with this option enabled.
550 default y if SMP && PPC_PSERIES
556 depends on NEED_MULTIPLE_NODES
558 config USE_PERCPU_NUMA_NODE_ID
562 config HAVE_MEMORYLESS_NODES
566 config ARCH_SELECT_MEMORY_MODEL
570 config ARCH_FLATMEM_ENABLE
572 depends on (PPC64 && !NUMA) || PPC32
574 config ARCH_SPARSEMEM_ENABLE
577 select SPARSEMEM_VMEMMAP_ENABLE
579 config ARCH_SPARSEMEM_DEFAULT
581 depends on (SMP && PPC_PSERIES) || PPC_PS3
583 config SYS_SUPPORTS_HUGETLBFS
586 config ILLEGAL_POINTER_VALUE
588 # This is roughly half way between the top of user space and the bottom
589 # of kernel space, which seems about as good as we can get.
590 default 0x5deadbeef0000000 if PPC64
595 config ARCH_MEMORY_PROBE
597 depends on MEMORY_HOTPLUG
599 # Some NUMA nodes have memory ranges that span
600 # other nodes. Even though a pfn is valid and
601 # between a node's start and end pfns, it may not
602 # reside on that node. See memmap_init_zone()
604 config NODES_SPAN_OTHER_NODES
606 depends on NEED_MULTIPLE_NODES
609 bool "Using standard binutils settings"
613 Turning this option off allows you to select 256KB PAGE_SIZE on 44x.
614 Note, that kernel will be able to run only those applications,
615 which had been compiled using binutils later than 2.17.50.0.3 with
616 '-zmax-page-size' set to 256K (the default is 64K). Or, if using
617 the older binutils, you can patch them with a trivial patch, which
618 changes the ELF_MAXPAGESIZE definition from 0x10000 to 0x40000.
624 Select the kernel logical page size. Increasing the page size
625 will reduce software overhead at each page boundary, allow
626 hardware prefetch mechanisms to be more effective, and allow
627 larger dma transfers increasing IO efficiency and reducing
628 overhead. However the utilization of memory will increase.
629 For example, each cached file will using a multiple of the
630 page size to hold its contents and the difference between the
631 end of file and the end of page is wasted.
633 Some dedicated systems, such as software raid serving with
634 accelerated calculations, have shown significant increases.
636 If you configure a 64 bit kernel for 64k pages but the
637 processor does not support them, then the kernel will simulate
638 them with 4k pages, loading them on demand, but with the
639 reduced software overhead and larger internal fragmentation.
640 For the 32 bit kernel, a large page option will not be offered
641 unless it is supported by the configured processor.
643 If unsure, choose 4K_PAGES.
647 select HAVE_ARCH_SOFT_DIRTY if PPC_BOOK3S_64
651 depends on 44x || PPC_8xx
655 depends on !PPC_FSL_BOOK3E && (44x || PPC_STD_MMU_64 || PPC_BOOK3E_64)
656 select HAVE_ARCH_SOFT_DIRTY if PPC_BOOK3S_64
658 config PPC_256K_PAGES
659 bool "256k page size"
660 depends on 44x && !STDBINUTILS
662 Make the page size 256k.
664 As the ELF standard only requires alignment to support page
665 sizes up to 64k, you will need to compile all of your user
666 space applications with a non-standard binutils settings
667 (see the STDBINUTILS description for details).
669 Say N unless you know what you are doing.
673 config FORCE_MAX_ZONEORDER
674 int "Maximum zone order"
675 range 8 9 if PPC64 && PPC_64K_PAGES
676 default "9" if PPC64 && PPC_64K_PAGES
677 range 13 13 if PPC64 && !PPC_64K_PAGES
678 default "13" if PPC64 && !PPC_64K_PAGES
679 range 9 64 if PPC32 && PPC_16K_PAGES
680 default "9" if PPC32 && PPC_16K_PAGES
681 range 7 64 if PPC32 && PPC_64K_PAGES
682 default "7" if PPC32 && PPC_64K_PAGES
683 range 5 64 if PPC32 && PPC_256K_PAGES
684 default "5" if PPC32 && PPC_256K_PAGES
688 The kernel memory allocator divides physically contiguous memory
689 blocks into "zones", where each zone is a power of two number of
690 pages. This option selects the largest power of two that the kernel
691 keeps in the memory allocator. If you need to allocate very large
692 blocks of physically contiguous memory, then you may need to
695 This config option is actually maximum order plus one. For example,
696 a value of 11 means that the largest free memory block is 2^10 pages.
698 The page size is not necessarily 4KB. For example, on 64-bit
699 systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES. Keep
700 this in mind when choosing a value for this option.
702 config PPC_SUBPAGE_PROT
703 bool "Support setting protections for 4k subpages"
704 depends on PPC_STD_MMU_64 && PPC_64K_PAGES
706 This option adds support for a system call to allow user programs
707 to set access permissions (read/write, readonly, or no access)
708 on the 4k subpages of each 64k page.
710 config PPC_COPRO_BASE
715 bool "SMT (Hyperthreading) scheduler support"
716 depends on PPC64 && SMP
718 SMT scheduler support improves the CPU scheduler's decision making
719 when dealing with POWER5 cpus at a cost of slightly increased
720 overhead in some places. If unsure say N here.
722 config PPC_DENORMALISATION
723 bool "PowerPC denormalisation exception handling"
724 depends on PPC_BOOK3S_64
725 default "y" if PPC_POWERNV
727 Add support for handling denormalisation of single precision
728 values. Useful for bare metal only. If unsure say Y here.
731 bool "Default bootloader kernel arguments"
734 string "Initial kernel command string"
735 depends on CMDLINE_BOOL
736 default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
738 On some platforms, there is currently no way for the boot loader to
739 pass arguments to the kernel. For these platforms, you can supply
740 some command-line options at build time by entering them here. In
741 most cases you will need to specify the root device here.
744 bool "Always use the default kernel command string"
745 depends on CMDLINE_BOOL
747 Always use the default kernel command string, even if the boot
748 loader passes other arguments to the kernel.
749 This is useful if you cannot or don't want to change the
750 command-line options your boot loader passes to the kernel.
753 string "Additional default image types"
755 List additional targets to be built by the bootwrapper here (separated
756 by spaces). This is useful for targets that depend of device tree
757 files in the .dts directory.
759 Targets in this list will be build as part of the default build
760 target, or when the user does a 'make zImage' or a
761 'make zImage.initrd'.
763 If unsure, leave blank
765 config ARCH_WANTS_FREEZER_CONTROL
769 source kernel/power/Kconfig
772 bool "Enable seccomp to safely compute untrusted bytecode"
776 This kernel feature is useful for number crunching applications
777 that may need to compute untrusted bytecode during their
778 execution. By using pipes or other transports made available to
779 the process as file descriptors supporting the read/write
780 syscalls, it's possible to isolate those applications in
781 their own address space using seccomp. Once seccomp is
782 enabled via /proc/<pid>/seccomp, it cannot be disabled
783 and the task is only allowed to execute a few safe syscalls
784 defined by each seccomp mode.
786 If unsure, say Y. Only embedded should say N here.
797 bool "Support for ISA-bus hardware"
801 Find out whether you have ISA slots on your motherboard. ISA is the
802 name of a bus system, i.e. the way the CPU talks to the other stuff
803 inside your box. If you have an Apple machine, say N here; if you
804 have an IBM RS/6000 or pSeries machine, say Y. If you have an
805 embedded board, consult your board documentation.
811 config NEED_DMA_MAP_STATE
812 def_bool (PPC64 || NOT_COHERENT_CACHE)
814 config NEED_SG_DMA_LENGTH
817 config GENERIC_ISA_DMA
819 depends on ISA_DMA_API
822 config PPC_INDIRECT_PCI
825 default y if 40x || 44x
839 select PPC_INDIRECT_PCI
845 depends on SUSPEND && (PPC_85xx || PPC_86xx)
847 Freescale MPC85xx/MPC86xx power management controller support
848 (suspend/resume). For MPC83xx see platforms/83xx/suspend.c
853 depends on SUSPEND && (44x || 40x)
855 PPC4xx Clock Power Management (CPM) support (suspend/resume).
856 It also enables support for two different idle states (idle-wait
863 bool "Freescale Local Bus support"
865 Enables reporting of errors from the Freescale local bus
866 controller. Also contains some common code used by
867 drivers for specific local bus peripherals.
871 depends on PPC_83xx || QUICC_ENGINE || CPM2
873 Freescale General-purpose Timers support
875 # Yes MCA RS/6000s exist but Linux-PPC does not currently support any
879 # Platforms that what PCI turned unconditionally just do select PCI
880 # in their config node. Platforms that want to choose at config
881 # time should select PPC_PCI_CHOICE
882 config PPC_PCI_CHOICE
886 bool "PCI support" if PPC_PCI_CHOICE
887 default y if !40x && !CPM2 && !8xx && !PPC_83xx \
888 && !PPC_85xx && !PPC_86xx && !GAMECUBE_COMMON
889 default PCI_QSPAN if !4xx && !CPM2 && 8xx
890 select GENERIC_PCI_IOMAP
892 Find out whether your system includes a PCI bus. PCI is the name of
893 a bus system, i.e. the way the CPU talks to the other stuff inside
894 your box. If you say Y here, the kernel will include drivers and
895 infrastructure code to support PCI bus devices.
905 depends on !4xx && !CPM2 && 8xx
908 Say Y here if you have a system based on a Motorola 8xx-series
909 embedded processor with a QSPAN PCI interface, otherwise say N.
913 depends on PCI && 8260
914 select PPC_INDIRECT_PCI
917 source "drivers/pci/Kconfig"
919 source "drivers/pcmcia/Kconfig"
926 tristate "RapidIO support"
927 depends on HAS_RAPIDIO || PCI
929 If you say Y here, the kernel will include drivers and
930 infrastructure code to support RapidIO interconnect devices.
933 bool "Freescale Embedded SRIO Controller support"
934 depends on RAPIDIO = y && HAS_RAPIDIO
937 Include support for RapidIO controller on Freescale embedded
938 processors (MPC8548, MPC8641, etc).
940 source "drivers/rapidio/Kconfig"
944 config NONSTATIC_KERNEL
948 menu "Advanced setup"
951 config ADVANCED_OPTIONS
952 bool "Prompt for advanced kernel configuration options"
954 This option will enable prompting for a variety of advanced kernel
955 configuration options. These options can cause the kernel to not
956 work if they are set incorrectly, but can be used to optimize certain
957 aspects of kernel memory management.
959 Unless you know what you are doing, say N here.
961 comment "Default settings for advanced configuration options are used"
962 depends on !ADVANCED_OPTIONS
964 config LOWMEM_SIZE_BOOL
965 bool "Set maximum low memory"
966 depends on ADVANCED_OPTIONS
968 This option allows you to set the maximum amount of memory which
969 will be used as "low memory", that is, memory which the kernel can
970 access directly, without having to set up a kernel virtual mapping.
971 This can be useful in optimizing the layout of kernel virtual
974 Say N here unless you know what you are doing.
977 hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
980 config LOWMEM_CAM_NUM_BOOL
981 bool "Set number of CAMs to use to map low memory"
982 depends on ADVANCED_OPTIONS && FSL_BOOKE
984 This option allows you to set the maximum number of CAM slots that
985 will be used to map low memory. There are a limited number of slots
986 available and even more limited number that will fit in the L1 MMU.
987 However, using more entries will allow mapping more low memory. This
988 can be useful in optimizing the layout of kernel virtual memory.
990 Say N here unless you know what you are doing.
992 config LOWMEM_CAM_NUM
994 int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL
997 config DYNAMIC_MEMSTART
998 bool "Enable page aligned dynamic load address for kernel"
999 depends on ADVANCED_OPTIONS && FLATMEM && (FSL_BOOKE || 44x)
1000 select NONSTATIC_KERNEL
1002 This option enables the kernel to be loaded at any page aligned
1003 physical address. The kernel creates a mapping from KERNELBASE to
1004 the address where the kernel is loaded. The page size here implies
1005 the TLB page size of the mapping for kernel on the particular platform.
1006 Please refer to the init code for finding the TLB page size.
1008 DYNAMIC_MEMSTART is an easy way of implementing pseudo-RELOCATABLE
1009 kernel image, where the only restriction is the page aligned kernel
1010 load address. When this option is enabled, the compile time physical
1011 address CONFIG_PHYSICAL_START is ignored.
1013 This option is overridden by CONFIG_RELOCATABLE
1015 config PAGE_OFFSET_BOOL
1016 bool "Set custom page offset address"
1017 depends on ADVANCED_OPTIONS
1019 This option allows you to set the kernel virtual address at which
1020 the kernel will map low memory. This can be useful in optimizing
1021 the virtual memory layout of the system.
1023 Say N here unless you know what you are doing.
1026 hex "Virtual address of memory base" if PAGE_OFFSET_BOOL
1027 default "0xc0000000"
1029 config KERNEL_START_BOOL
1030 bool "Set custom kernel base address"
1031 depends on ADVANCED_OPTIONS
1033 This option allows you to set the kernel virtual address at which
1034 the kernel will be loaded. Normally this should match PAGE_OFFSET
1035 however there are times (like kdump) that one might not want them
1038 Say N here unless you know what you are doing.
1041 hex "Virtual address of kernel base" if KERNEL_START_BOOL
1042 default PAGE_OFFSET if PAGE_OFFSET_BOOL
1043 default "0xc2000000" if CRASH_DUMP && !NONSTATIC_KERNEL
1044 default "0xc0000000"
1046 config PHYSICAL_START_BOOL
1047 bool "Set physical address where the kernel is loaded"
1048 depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE
1050 This gives the physical address where the kernel is loaded.
1052 Say N here unless you know what you are doing.
1054 config PHYSICAL_START
1055 hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL
1056 default "0x02000000" if PPC_STD_MMU && CRASH_DUMP && !NONSTATIC_KERNEL
1057 default "0x00000000"
1059 config PHYSICAL_ALIGN
1061 default "0x04000000" if FSL_BOOKE
1063 This value puts the alignment restrictions on physical address
1064 where kernel is loaded and run from. Kernel is compiled for an
1065 address which meets above alignment restriction.
1067 config TASK_SIZE_BOOL
1068 bool "Set custom user task size"
1069 depends on ADVANCED_OPTIONS
1071 This option allows you to set the amount of virtual address space
1072 allocated to user tasks. This can be useful in optimizing the
1073 virtual memory layout of the system.
1075 Say N here unless you know what you are doing.
1078 hex "Size of user task space" if TASK_SIZE_BOOL
1079 default "0x80000000" if PPC_8xx
1080 default "0xc0000000"
1082 config CONSISTENT_SIZE_BOOL
1083 bool "Set custom consistent memory pool size"
1084 depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
1086 This option allows you to set the size of the
1087 consistent memory pool. This pool of virtual memory
1088 is used to make consistent memory allocations.
1090 config CONSISTENT_SIZE
1091 hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
1092 default "0x00200000" if NOT_COHERENT_CACHE
1095 bool "Pinned Kernel TLBs (860 ONLY)"
1096 depends on ADVANCED_OPTIONS && 8xx
1099 bool "Pinned TLB for IMMR"
1105 # This value must have zeroes in the bottom 60 bits otherwise lots will break
1108 default "0xc000000000000000"
1111 default "0xc000000000000000"
1112 config PHYSICAL_START
1114 default "0x00000000"
1120 source "net/Kconfig"
1122 source "drivers/Kconfig"
1126 source "lib/Kconfig"
1128 source "arch/powerpc/Kconfig.debug"
1130 source "security/Kconfig"
1134 depends on COMPAT && KEYS
1137 source "crypto/Kconfig"
1139 config PPC_LIB_RHEAP
1142 source "arch/powerpc/kvm/Kconfig"
1144 source "kernel/livepatch/Kconfig"
projects / mirror_ubuntu-artful-kernel.git / blob