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 ARCH_HAS_SG_CHAIN
115 select GENERIC_ATOMIC64 if PPC32
116 select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
117 select HAVE_PERF_EVENTS
118 select HAVE_REGS_AND_STACK_ACCESS_API
119 select HAVE_HW_BREAKPOINT if PERF_EVENTS && PPC_BOOK3S_64
120 select ARCH_WANT_IPC_PARSE_VERSION
123 select GENERIC_IRQ_SHOW
124 select GENERIC_IRQ_SHOW_LEVEL
125 select IRQ_FORCED_THREADING
126 select HAVE_RCU_TABLE_FREE if SMP
127 select HAVE_SYSCALL_TRACEPOINTS
128 select HAVE_BPF_JIT if PPC64
129 select HAVE_ARCH_JUMP_LABEL
130 select ARCH_HAVE_NMI_SAFE_CMPXCHG
131 select GENERIC_SMP_IDLE_THREAD
132 select GENERIC_CMOS_UPDATE
133 select GENERIC_TIME_VSYSCALL_OLD
134 select GENERIC_CLOCKEVENTS
135 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
136 select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
137 select GENERIC_STRNCPY_FROM_USER
138 select GENERIC_STRNLEN_USER
139 select HAVE_MOD_ARCH_SPECIFIC
140 select MODULES_USE_ELF_RELA
141 select CLONE_BACKWARDS
142 select ARCH_USE_BUILTIN_BSWAP
143 select OLD_SIGSUSPEND
144 select OLD_SIGACTION if PPC32
145 select HAVE_DEBUG_STACKOVERFLOW
146 select HAVE_IRQ_EXIT_ON_IRQ_STACK
147 select ARCH_USE_CMPXCHG_LOCKREF if PPC64
148 select HAVE_ARCH_AUDITSYSCALL
149 select ARCH_SUPPORTS_ATOMIC_RMW
152 def_bool CPU_LITTLE_ENDIAN
165 select COMPAT_BINFMT_ELF
166 select ARCH_WANT_OLD_COMPAT_IPC
167 select COMPAT_OLD_SIGACTION
169 config SYSVIPC_COMPAT
171 depends on COMPAT && SYSVIPC
174 # All PPC32s use generic nvram driver through ppc_md
179 config SCHED_OMIT_FRAME_POINTER
183 config ARCH_MAY_HAVE_PC_FDC
185 default !PPC_PSERIES || PCI
190 config PPC_UDBG_16550
194 config GENERIC_TBSYNC
196 default y if PPC32 && SMP
208 config SYS_SUPPORTS_APM_EMULATION
209 default y if PMAC_APM_EMU
215 Used to allow a board to specify it wants an ePAPR compliant wrapper.
218 config DEFAULT_UIMAGE
221 Used to allow a board to specify it wants a uImage built by default
224 config ARCH_HIBERNATION_POSSIBLE
228 config ARCH_SUSPEND_POSSIBLE
230 depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx || \
231 (PPC_85xx && !PPC_E500MC) || PPC_86xx || PPC_PSERIES \
234 config PPC_DCR_NATIVE
244 depends on PPC_DCR_NATIVE || PPC_DCR_MMIO
247 config PPC_OF_PLATFORM_PCI
250 depends on PPC64 # not supported on 32 bits yet
253 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
256 config ARCH_SUPPORTS_UPROBES
259 config PPC_ADV_DEBUG_REGS
261 depends on 40x || BOOKE
264 config PPC_ADV_DEBUG_IACS
266 depends on PPC_ADV_DEBUG_REGS
270 config PPC_ADV_DEBUG_DACS
272 depends on PPC_ADV_DEBUG_REGS
275 config PPC_ADV_DEBUG_DVCS
277 depends on PPC_ADV_DEBUG_REGS
281 config PPC_ADV_DEBUG_DAC_RANGE
283 depends on PPC_ADV_DEBUG_REGS && 44x
286 config PPC_EMULATE_SSTEP
288 default y if KPROBES || UPROBES || XMON || HAVE_HW_BREAKPOINT
290 source "init/Kconfig"
292 source "kernel/Kconfig.freezer"
294 source "arch/powerpc/sysdev/Kconfig"
295 source "arch/powerpc/platforms/Kconfig"
297 menu "Kernel options"
300 bool "High memory support"
303 source kernel/Kconfig.hz
304 source kernel/Kconfig.preempt
305 source "fs/Kconfig.binfmt"
307 config HUGETLB_PAGE_SIZE_VARIABLE
309 depends on HUGETLB_PAGE
312 config MATH_EMULATION
313 bool "Math emulation"
314 depends on 4xx || 8xx || PPC_MPC832x || BOOKE
316 Some PowerPC chips designed for embedded applications do not have
317 a floating-point unit and therefore do not implement the
318 floating-point instructions in the PowerPC instruction set. If you
319 say Y here, the kernel will include code to emulate a floating-point
320 unit, which will allow programs that use floating-point
323 This is also useful to emulate missing (optional) instructions
324 such as fsqrt on cores that do have an FPU but do not implement
325 them (such as Freescale BookE).
328 prompt "Math emulation options"
329 default MATH_EMULATION_FULL
330 depends on MATH_EMULATION
332 config MATH_EMULATION_FULL
333 bool "Emulate all the floating point instructions"
335 Select this option will enable the kernel to support to emulate
336 all the floating point instructions. If your SoC doesn't have
337 a FPU, you should select this.
339 config MATH_EMULATION_HW_UNIMPLEMENTED
340 bool "Just emulate the FPU unimplemented instructions"
342 Select this if you know there does have a hardware FPU on your
343 SoC, but some floating point instructions are not implemented by that.
347 config PPC_TRANSACTIONAL_MEM
348 bool "Transactional Memory support for POWERPC"
349 depends on PPC_BOOK3S_64
355 Support user-mode Transactional Memory on POWERPC.
361 bool "SWIOTLB support"
365 Support for IO bounce buffering for systems without an IOMMU.
366 This allows us to DMA to the full physical address space on
367 platforms where the size of a physical address is larger
368 than the bus address. Not all platforms support this.
371 bool "Support for enabling/disabling CPUs"
372 depends on SMP && (PPC_PSERIES || \
373 PPC_PMAC || PPC_POWERNV || (PPC_85xx && !PPC_E500MC))
375 Say Y here to be able to disable and re-enable individual
376 CPUs at runtime on SMP machines.
378 Say N if you are unsure.
380 config ARCH_CPU_PROBE_RELEASE
382 depends on HOTPLUG_CPU
384 config ARCH_ENABLE_MEMORY_HOTPLUG
387 config ARCH_HAS_WALK_MEMORY
390 config ARCH_ENABLE_MEMORY_HOTREMOVE
393 config PPC64_SUPPORTS_MEMORY_FAILURE
394 bool "Add support for memory hwpoison"
395 depends on PPC_BOOK3S_64
396 default "y" if PPC_POWERNV
397 select ARCH_SUPPORTS_MEMORY_FAILURE
400 bool "kexec system call"
401 depends on (PPC_BOOK3S || FSL_BOOKE || (44x && !SMP))
405 kexec is a system call that implements the ability to shutdown your
406 current kernel, and to start another kernel. It is like a reboot
407 but it is independent of the system firmware. And like a reboot
408 you can start any kernel with it, not just Linux.
410 The name comes from the similarity to the exec system call.
412 It is an ongoing process to be certain the hardware in a machine
413 is properly shutdown, so do not be surprised if this code does not
414 initially work for you. As of this writing the exact hardware
415 interface is strongly in flux, so no good recommendation can be
419 bool "Build a kdump crash kernel"
420 depends on PPC64 || 6xx || FSL_BOOKE || (44x && !SMP)
421 select RELOCATABLE if (PPC64 && !COMPILE_TEST) || 44x || FSL_BOOKE
423 Build a kernel suitable for use as a kdump capture kernel.
424 The same kernel binary can be used as production kernel and dump
428 bool "Firmware-assisted dump"
429 depends on PPC64 && PPC_RTAS && CRASH_DUMP && KEXEC
431 A robust mechanism to get reliable kernel crash dump with
432 assistance from firmware. This approach does not use kexec,
433 instead firmware assists in booting the kdump kernel
434 while preserving memory contents. Firmware-assisted dump
435 is meant to be a kdump replacement offering robustness and
436 speed not possible without system firmware assistance.
441 bool "Distribute interrupts on all CPUs by default"
444 This option gives the kernel permission to distribute IRQs across
445 multiple CPUs. Saying N here will route all IRQs to the first
446 CPU. Generally saying Y is safe, although some problems have been
447 reported with SMP Power Macintoshes with this option enabled.
452 default y if SMP && PPC_PSERIES
458 depends on NEED_MULTIPLE_NODES
460 config USE_PERCPU_NUMA_NODE_ID
464 config HAVE_MEMORYLESS_NODES
468 config ARCH_SELECT_MEMORY_MODEL
472 config ARCH_FLATMEM_ENABLE
474 depends on (PPC64 && !NUMA) || PPC32
476 config ARCH_SPARSEMEM_ENABLE
479 select SPARSEMEM_VMEMMAP_ENABLE
481 config ARCH_SPARSEMEM_DEFAULT
483 depends on (SMP && PPC_PSERIES) || PPC_PS3
485 config SYS_SUPPORTS_HUGETLBFS
490 config ARCH_MEMORY_PROBE
492 depends on MEMORY_HOTPLUG
494 # Some NUMA nodes have memory ranges that span
495 # other nodes. Even though a pfn is valid and
496 # between a node's start and end pfns, it may not
497 # reside on that node. See memmap_init_zone()
499 config NODES_SPAN_OTHER_NODES
501 depends on NEED_MULTIPLE_NODES
503 config PPC_HAS_HASH_64K
509 bool "Using standard binutils settings"
513 Turning this option off allows you to select 256KB PAGE_SIZE on 44x.
514 Note, that kernel will be able to run only those applications,
515 which had been compiled using binutils later than 2.17.50.0.3 with
516 '-zmax-page-size' set to 256K (the default is 64K). Or, if using
517 the older binutils, you can patch them with a trivial patch, which
518 changes the ELF_MAXPAGESIZE definition from 0x10000 to 0x40000.
524 Select the kernel logical page size. Increasing the page size
525 will reduce software overhead at each page boundary, allow
526 hardware prefetch mechanisms to be more effective, and allow
527 larger dma transfers increasing IO efficiency and reducing
528 overhead. However the utilization of memory will increase.
529 For example, each cached file will using a multiple of the
530 page size to hold its contents and the difference between the
531 end of file and the end of page is wasted.
533 Some dedicated systems, such as software raid serving with
534 accelerated calculations, have shown significant increases.
536 If you configure a 64 bit kernel for 64k pages but the
537 processor does not support them, then the kernel will simulate
538 them with 4k pages, loading them on demand, but with the
539 reduced software overhead and larger internal fragmentation.
540 For the 32 bit kernel, a large page option will not be offered
541 unless it is supported by the configured processor.
543 If unsure, choose 4K_PAGES.
549 bool "16k page size" if 44x
552 bool "64k page size" if 44x || PPC_STD_MMU_64 || PPC_BOOK3E_64
553 depends on !PPC_FSL_BOOK3E
554 select PPC_HAS_HASH_64K if PPC_STD_MMU_64
556 config PPC_256K_PAGES
557 bool "256k page size" if 44x
558 depends on !STDBINUTILS
560 Make the page size 256k.
562 As the ELF standard only requires alignment to support page
563 sizes up to 64k, you will need to compile all of your user
564 space applications with a non-standard binutils settings
565 (see the STDBINUTILS description for details).
567 Say N unless you know what you are doing.
571 config FORCE_MAX_ZONEORDER
572 int "Maximum zone order"
573 range 9 64 if PPC64 && PPC_64K_PAGES
574 default "9" if PPC64 && PPC_64K_PAGES
575 range 13 64 if PPC64 && !PPC_64K_PAGES
576 default "13" if PPC64 && !PPC_64K_PAGES
577 range 9 64 if PPC32 && PPC_16K_PAGES
578 default "9" if PPC32 && PPC_16K_PAGES
579 range 7 64 if PPC32 && PPC_64K_PAGES
580 default "7" if PPC32 && PPC_64K_PAGES
581 range 5 64 if PPC32 && PPC_256K_PAGES
582 default "5" if PPC32 && PPC_256K_PAGES
586 The kernel memory allocator divides physically contiguous memory
587 blocks into "zones", where each zone is a power of two number of
588 pages. This option selects the largest power of two that the kernel
589 keeps in the memory allocator. If you need to allocate very large
590 blocks of physically contiguous memory, then you may need to
593 This config option is actually maximum order plus one. For example,
594 a value of 11 means that the largest free memory block is 2^10 pages.
596 The page size is not necessarily 4KB. For example, on 64-bit
597 systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES. Keep
598 this in mind when choosing a value for this option.
600 config PPC_SUBPAGE_PROT
601 bool "Support setting protections for 4k subpages"
602 depends on PPC_STD_MMU_64 && PPC_64K_PAGES
604 This option adds support for a system call to allow user programs
605 to set access permissions (read/write, readonly, or no access)
606 on the 4k subpages of each 64k page.
609 bool "SMT (Hyperthreading) scheduler support"
610 depends on PPC64 && SMP
612 SMT scheduler support improves the CPU scheduler's decision making
613 when dealing with POWER5 cpus at a cost of slightly increased
614 overhead in some places. If unsure say N here.
616 config PPC_DENORMALISATION
617 bool "PowerPC denormalisation exception handling"
618 depends on PPC_BOOK3S_64
619 default "y" if PPC_POWERNV
621 Add support for handling denormalisation of single precision
622 values. Useful for bare metal only. If unsure say Y here.
625 bool "Default bootloader kernel arguments"
628 string "Initial kernel command string"
629 depends on CMDLINE_BOOL
630 default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
632 On some platforms, there is currently no way for the boot loader to
633 pass arguments to the kernel. For these platforms, you can supply
634 some command-line options at build time by entering them here. In
635 most cases you will need to specify the root device here.
638 bool "Always use the default kernel command string"
639 depends on CMDLINE_BOOL
641 Always use the default kernel command string, even if the boot
642 loader passes other arguments to the kernel.
643 This is useful if you cannot or don't want to change the
644 command-line options your boot loader passes to the kernel.
647 string "Additional default image types"
649 List additional targets to be built by the bootwrapper here (separated
650 by spaces). This is useful for targets that depend of device tree
651 files in the .dts directory.
653 Targets in this list will be build as part of the default build
654 target, or when the user does a 'make zImage' or a
655 'make zImage.initrd'.
657 If unsure, leave blank
659 config ARCH_WANTS_FREEZER_CONTROL
663 source kernel/power/Kconfig
666 bool "Enable seccomp to safely compute untrusted bytecode"
670 This kernel feature is useful for number crunching applications
671 that may need to compute untrusted bytecode during their
672 execution. By using pipes or other transports made available to
673 the process as file descriptors supporting the read/write
674 syscalls, it's possible to isolate those applications in
675 their own address space using seccomp. Once seccomp is
676 enabled via /proc/<pid>/seccomp, it cannot be disabled
677 and the task is only allowed to execute a few safe syscalls
678 defined by each seccomp mode.
680 If unsure, say Y. Only embedded should say N here.
691 bool "Support for ISA-bus hardware"
695 Find out whether you have ISA slots on your motherboard. ISA is the
696 name of a bus system, i.e. the way the CPU talks to the other stuff
697 inside your box. If you have an Apple machine, say N here; if you
698 have an IBM RS/6000 or pSeries machine, say Y. If you have an
699 embedded board, consult your board documentation.
705 config NEED_DMA_MAP_STATE
706 def_bool (PPC64 || NOT_COHERENT_CACHE)
708 config NEED_SG_DMA_LENGTH
711 config GENERIC_ISA_DMA
713 depends on ISA_DMA_API
716 config PPC_INDIRECT_PCI
719 default y if 40x || 44x
733 select PPC_INDIRECT_PCI
739 depends on SUSPEND && (PPC_85xx || PPC_86xx)
741 Freescale MPC85xx/MPC86xx power management controller support
742 (suspend/resume). For MPC83xx see platforms/83xx/suspend.c
747 depends on SUSPEND && (44x || 40x)
749 PPC4xx Clock Power Management (CPM) support (suspend/resume).
750 It also enables support for two different idle states (idle-wait
757 bool "Freescale Local Bus support"
760 Enables reporting of errors from the Freescale local bus
761 controller. Also contains some common code used by
762 drivers for specific local bus peripherals.
766 depends on PPC_83xx || QUICC_ENGINE || CPM2
768 Freescale General-purpose Timers support
770 # Yes MCA RS/6000s exist but Linux-PPC does not currently support any
774 # Platforms that what PCI turned unconditionally just do select PCI
775 # in their config node. Platforms that want to choose at config
776 # time should select PPC_PCI_CHOICE
777 config PPC_PCI_CHOICE
781 bool "PCI support" if PPC_PCI_CHOICE
782 default y if !40x && !CPM2 && !8xx && !PPC_83xx \
783 && !PPC_85xx && !PPC_86xx && !GAMECUBE_COMMON
784 default PCI_QSPAN if !4xx && !CPM2 && 8xx
785 select GENERIC_PCI_IOMAP
787 Find out whether your system includes a PCI bus. PCI is the name of
788 a bus system, i.e. the way the CPU talks to the other stuff inside
789 your box. If you say Y here, the kernel will include drivers and
790 infrastructure code to support PCI bus devices.
800 depends on !4xx && !CPM2 && 8xx
803 Say Y here if you have a system based on a Motorola 8xx-series
804 embedded processor with a QSPAN PCI interface, otherwise say N.
808 depends on PCI && 8260
809 select PPC_INDIRECT_PCI
812 source "drivers/pci/pcie/Kconfig"
814 source "drivers/pci/Kconfig"
816 source "drivers/pcmcia/Kconfig"
818 source "drivers/pci/hotplug/Kconfig"
825 tristate "RapidIO support"
826 depends on HAS_RAPIDIO || PCI
828 If you say Y here, the kernel will include drivers and
829 infrastructure code to support RapidIO interconnect devices.
832 bool "Freescale Embedded SRIO Controller support"
833 depends on RAPIDIO = y && HAS_RAPIDIO
836 Include support for RapidIO controller on Freescale embedded
837 processors (MPC8548, MPC8641, etc).
839 source "drivers/rapidio/Kconfig"
843 config NONSTATIC_KERNEL
847 menu "Advanced setup"
850 config ADVANCED_OPTIONS
851 bool "Prompt for advanced kernel configuration options"
853 This option will enable prompting for a variety of advanced kernel
854 configuration options. These options can cause the kernel to not
855 work if they are set incorrectly, but can be used to optimize certain
856 aspects of kernel memory management.
858 Unless you know what you are doing, say N here.
860 comment "Default settings for advanced configuration options are used"
861 depends on !ADVANCED_OPTIONS
863 config LOWMEM_SIZE_BOOL
864 bool "Set maximum low memory"
865 depends on ADVANCED_OPTIONS
867 This option allows you to set the maximum amount of memory which
868 will be used as "low memory", that is, memory which the kernel can
869 access directly, without having to set up a kernel virtual mapping.
870 This can be useful in optimizing the layout of kernel virtual
873 Say N here unless you know what you are doing.
876 hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
879 config LOWMEM_CAM_NUM_BOOL
880 bool "Set number of CAMs to use to map low memory"
881 depends on ADVANCED_OPTIONS && FSL_BOOKE
883 This option allows you to set the maximum number of CAM slots that
884 will be used to map low memory. There are a limited number of slots
885 available and even more limited number that will fit in the L1 MMU.
886 However, using more entries will allow mapping more low memory. This
887 can be useful in optimizing the layout of kernel virtual memory.
889 Say N here unless you know what you are doing.
891 config LOWMEM_CAM_NUM
893 int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL
896 config DYNAMIC_MEMSTART
897 bool "Enable page aligned dynamic load address for kernel"
898 depends on ADVANCED_OPTIONS && FLATMEM && (FSL_BOOKE || 44x)
899 select NONSTATIC_KERNEL
901 This option enables the kernel to be loaded at any page aligned
902 physical address. The kernel creates a mapping from KERNELBASE to
903 the address where the kernel is loaded. The page size here implies
904 the TLB page size of the mapping for kernel on the particular platform.
905 Please refer to the init code for finding the TLB page size.
907 DYNAMIC_MEMSTART is an easy way of implementing pseudo-RELOCATABLE
908 kernel image, where the only restriction is the page aligned kernel
909 load address. When this option is enabled, the compile time physical
910 address CONFIG_PHYSICAL_START is ignored.
912 This option is overridden by CONFIG_RELOCATABLE
915 bool "Build a relocatable kernel"
916 depends on ADVANCED_OPTIONS && FLATMEM && (44x || FSL_BOOKE)
917 select NONSTATIC_KERNEL
919 This builds a kernel image that is capable of running at the
920 location the kernel is loaded at, without any alignment restrictions.
921 This feature is a superset of DYNAMIC_MEMSTART and hence overrides it.
923 One use is for the kexec on panic case where the recovery kernel
924 must live at a different physical address than the primary
927 Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address
928 it has been loaded at and the compile time physical addresses
929 CONFIG_PHYSICAL_START is ignored. However CONFIG_PHYSICAL_START
930 setting can still be useful to bootwrappers that need to know the
931 load address of the kernel (eg. u-boot/mkimage).
933 config RELOCATABLE_PPC32
935 depends on PPC32 && RELOCATABLE
937 config PAGE_OFFSET_BOOL
938 bool "Set custom page offset address"
939 depends on ADVANCED_OPTIONS
941 This option allows you to set the kernel virtual address at which
942 the kernel will map low memory. This can be useful in optimizing
943 the virtual memory layout of the system.
945 Say N here unless you know what you are doing.
948 hex "Virtual address of memory base" if PAGE_OFFSET_BOOL
951 config KERNEL_START_BOOL
952 bool "Set custom kernel base address"
953 depends on ADVANCED_OPTIONS
955 This option allows you to set the kernel virtual address at which
956 the kernel will be loaded. Normally this should match PAGE_OFFSET
957 however there are times (like kdump) that one might not want them
960 Say N here unless you know what you are doing.
963 hex "Virtual address of kernel base" if KERNEL_START_BOOL
964 default PAGE_OFFSET if PAGE_OFFSET_BOOL
965 default "0xc2000000" if CRASH_DUMP && !NONSTATIC_KERNEL
968 config PHYSICAL_START_BOOL
969 bool "Set physical address where the kernel is loaded"
970 depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE
972 This gives the physical address where the kernel is loaded.
974 Say N here unless you know what you are doing.
976 config PHYSICAL_START
977 hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL
978 default "0x02000000" if PPC_STD_MMU && CRASH_DUMP && !NONSTATIC_KERNEL
981 config PHYSICAL_ALIGN
983 default "0x04000000" if FSL_BOOKE
985 This value puts the alignment restrictions on physical address
986 where kernel is loaded and run from. Kernel is compiled for an
987 address which meets above alignment restriction.
989 config TASK_SIZE_BOOL
990 bool "Set custom user task size"
991 depends on ADVANCED_OPTIONS
993 This option allows you to set the amount of virtual address space
994 allocated to user tasks. This can be useful in optimizing the
995 virtual memory layout of the system.
997 Say N here unless you know what you are doing.
1000 hex "Size of user task space" if TASK_SIZE_BOOL
1001 default "0x80000000" if PPC_8xx
1002 default "0xc0000000"
1004 config CONSISTENT_SIZE_BOOL
1005 bool "Set custom consistent memory pool size"
1006 depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
1008 This option allows you to set the size of the
1009 consistent memory pool. This pool of virtual memory
1010 is used to make consistent memory allocations.
1012 config CONSISTENT_SIZE
1013 hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
1014 default "0x00200000" if NOT_COHERENT_CACHE
1017 bool "Pinned Kernel TLBs (860 ONLY)"
1018 depends on ADVANCED_OPTIONS && 8xx
1023 bool "Build a relocatable kernel"
1024 depends on !COMPILE_TEST
1025 select NONSTATIC_KERNEL
1027 This builds a kernel image that is capable of running anywhere
1028 in the RMA (real memory area) at any 16k-aligned base address.
1029 The kernel is linked as a position-independent executable (PIE)
1030 and contains dynamic relocations which are processed early
1031 in the bootup process.
1033 One use is for the kexec on panic case where the recovery kernel
1034 must live at a different physical address than the primary
1037 # This value must have zeroes in the bottom 60 bits otherwise lots will break
1040 default "0xc000000000000000"
1043 default "0xc000000000000000"
1044 config PHYSICAL_START
1046 default "0x00000000"
1052 source "net/Kconfig"
1054 source "drivers/Kconfig"
1058 source "arch/powerpc/sysdev/qe_lib/Kconfig"
1060 source "lib/Kconfig"
1062 source "arch/powerpc/Kconfig.debug"
1064 source "security/Kconfig"
1068 depends on COMPAT && KEYS
1071 source "crypto/Kconfig"
1073 config PPC_LIB_RHEAP
1076 source "arch/powerpc/kvm/Kconfig"