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
91 select ARCH_HAS_ELF_RANDOMIZE
93 select OF_EARLY_FLATTREE
94 select OF_RESERVED_MEM
95 select HAVE_FTRACE_MCOUNT_RECORD
96 select HAVE_DYNAMIC_FTRACE
97 select HAVE_FUNCTION_TRACER
98 select HAVE_FUNCTION_GRAPH_TRACER
99 select SYSCTL_EXCEPTION_TRACE
100 select ARCH_WANT_OPTIONAL_GPIOLIB
101 select VIRT_TO_BUS if !PPC64
103 select HAVE_IOREMAP_PROT
104 select HAVE_EFFICIENT_UNALIGNED_ACCESS if !CPU_LITTLE_ENDIAN
106 select HAVE_ARCH_KGDB
107 select HAVE_KRETPROBES
108 select HAVE_ARCH_TRACEHOOK
110 select HAVE_MEMBLOCK_NODE_MAP
111 select HAVE_DMA_ATTRS
112 select HAVE_DMA_API_DEBUG
114 select HAVE_DEBUG_KMEMLEAK
115 select ARCH_HAS_SG_CHAIN
116 select GENERIC_ATOMIC64 if PPC32
117 select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
118 select HAVE_PERF_EVENTS
119 select HAVE_REGS_AND_STACK_ACCESS_API
120 select HAVE_HW_BREAKPOINT if PERF_EVENTS && PPC_BOOK3S_64
121 select ARCH_WANT_IPC_PARSE_VERSION
124 select GENERIC_IRQ_SHOW
125 select GENERIC_IRQ_SHOW_LEVEL
126 select IRQ_FORCED_THREADING
127 select HAVE_RCU_TABLE_FREE if SMP
128 select HAVE_SYSCALL_TRACEPOINTS
130 select HAVE_ARCH_JUMP_LABEL
131 select ARCH_HAVE_NMI_SAFE_CMPXCHG
132 select ARCH_HAS_GCOV_PROFILE_ALL
133 select GENERIC_SMP_IDLE_THREAD
134 select GENERIC_CMOS_UPDATE
135 select GENERIC_TIME_VSYSCALL_OLD
136 select GENERIC_CLOCKEVENTS
137 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
138 select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
139 select GENERIC_STRNCPY_FROM_USER
140 select GENERIC_STRNLEN_USER
141 select HAVE_MOD_ARCH_SPECIFIC
142 select MODULES_USE_ELF_RELA
143 select CLONE_BACKWARDS
144 select ARCH_USE_BUILTIN_BSWAP
145 select OLD_SIGSUSPEND
146 select OLD_SIGACTION if PPC32
147 select HAVE_DEBUG_STACKOVERFLOW
148 select HAVE_IRQ_EXIT_ON_IRQ_STACK
149 select ARCH_USE_CMPXCHG_LOCKREF if PPC64
150 select HAVE_ARCH_AUDITSYSCALL
151 select ARCH_SUPPORTS_ATOMIC_RMW
152 select DCACHE_WORD_ACCESS if PPC64 && CPU_LITTLE_ENDIAN
154 select HAVE_GENERIC_RCU_GUP
155 select HAVE_PERF_EVENTS_NMI if PPC64
158 def_bool CPU_LITTLE_ENDIAN
171 select COMPAT_BINFMT_ELF
172 select ARCH_WANT_OLD_COMPAT_IPC
173 select COMPAT_OLD_SIGACTION
175 config SYSVIPC_COMPAT
177 depends on COMPAT && SYSVIPC
180 # All PPC32s use generic nvram driver through ppc_md
185 config SCHED_OMIT_FRAME_POINTER
189 config ARCH_MAY_HAVE_PC_FDC
193 config PPC_UDBG_16550
197 config GENERIC_TBSYNC
199 default y if PPC32 && SMP
211 config SYS_SUPPORTS_APM_EMULATION
212 default y if PMAC_APM_EMU
218 Used to allow a board to specify it wants an ePAPR compliant wrapper.
221 config DEFAULT_UIMAGE
224 Used to allow a board to specify it wants a uImage built by default
227 config ARCH_HIBERNATION_POSSIBLE
231 config ARCH_SUSPEND_POSSIBLE
233 depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx || \
234 (PPC_85xx && !PPC_E500MC) || PPC_86xx || PPC_PSERIES \
237 config PPC_DCR_NATIVE
247 depends on PPC_DCR_NATIVE || PPC_DCR_MMIO
250 config PPC_OF_PLATFORM_PCI
253 depends on PPC64 # not supported on 32 bits yet
256 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
257 depends on PPC32 || PPC_STD_MMU_64
260 config ARCH_SUPPORTS_UPROBES
263 config PPC_ADV_DEBUG_REGS
265 depends on 40x || BOOKE
268 config PPC_ADV_DEBUG_IACS
270 depends on PPC_ADV_DEBUG_REGS
274 config PPC_ADV_DEBUG_DACS
276 depends on PPC_ADV_DEBUG_REGS
279 config PPC_ADV_DEBUG_DVCS
281 depends on PPC_ADV_DEBUG_REGS
285 config PPC_ADV_DEBUG_DAC_RANGE
287 depends on PPC_ADV_DEBUG_REGS && 44x
290 config PPC_EMULATE_SSTEP
292 default y if KPROBES || UPROBES || XMON || HAVE_HW_BREAKPOINT
298 config PGTABLE_LEVELS
301 default 3 if PPC_64K_PAGES
304 source "init/Kconfig"
306 source "kernel/Kconfig.freezer"
308 source "arch/powerpc/sysdev/Kconfig"
309 source "arch/powerpc/platforms/Kconfig"
311 menu "Kernel options"
314 bool "High memory support"
317 source kernel/Kconfig.hz
318 source kernel/Kconfig.preempt
319 source "fs/Kconfig.binfmt"
321 config HUGETLB_PAGE_SIZE_VARIABLE
323 depends on HUGETLB_PAGE
326 config MATH_EMULATION
327 bool "Math emulation"
328 depends on 4xx || 8xx || PPC_MPC832x || BOOKE
330 Some PowerPC chips designed for embedded applications do not have
331 a floating-point unit and therefore do not implement the
332 floating-point instructions in the PowerPC instruction set. If you
333 say Y here, the kernel will include code to emulate a floating-point
334 unit, which will allow programs that use floating-point
337 This is also useful to emulate missing (optional) instructions
338 such as fsqrt on cores that do have an FPU but do not implement
339 them (such as Freescale BookE).
342 prompt "Math emulation options"
343 default MATH_EMULATION_FULL
344 depends on MATH_EMULATION
346 config MATH_EMULATION_FULL
347 bool "Emulate all the floating point instructions"
349 Select this option will enable the kernel to support to emulate
350 all the floating point instructions. If your SoC doesn't have
351 a FPU, you should select this.
353 config MATH_EMULATION_HW_UNIMPLEMENTED
354 bool "Just emulate the FPU unimplemented instructions"
356 Select this if you know there does have a hardware FPU on your
357 SoC, but some floating point instructions are not implemented by that.
361 config PPC_TRANSACTIONAL_MEM
362 bool "Transactional Memory support for POWERPC"
363 depends on PPC_BOOK3S_64
369 Support user-mode Transactional Memory on POWERPC.
375 bool "SWIOTLB support"
379 Support for IO bounce buffering for systems without an IOMMU.
380 This allows us to DMA to the full physical address space on
381 platforms where the size of a physical address is larger
382 than the bus address. Not all platforms support this.
385 bool "Support for enabling/disabling CPUs"
386 depends on SMP && (PPC_PSERIES || \
387 PPC_PMAC || PPC_POWERNV || (PPC_85xx && !PPC_E500MC))
389 Say Y here to be able to disable and re-enable individual
390 CPUs at runtime on SMP machines.
392 Say N if you are unsure.
394 config ARCH_CPU_PROBE_RELEASE
396 depends on HOTPLUG_CPU
398 config ARCH_ENABLE_MEMORY_HOTPLUG
401 config ARCH_HAS_WALK_MEMORY
404 config ARCH_ENABLE_MEMORY_HOTREMOVE
407 config PPC64_SUPPORTS_MEMORY_FAILURE
408 bool "Add support for memory hwpoison"
409 depends on PPC_BOOK3S_64
410 default "y" if PPC_POWERNV
411 select ARCH_SUPPORTS_MEMORY_FAILURE
414 bool "kexec system call"
415 depends on (PPC_BOOK3S || FSL_BOOKE || (44x && !SMP))
417 kexec is a system call that implements the ability to shutdown your
418 current kernel, and to start another kernel. It is like a reboot
419 but it is independent of the system firmware. And like a reboot
420 you can start any kernel with it, not just Linux.
422 The name comes from the similarity to the exec system call.
424 It is an ongoing process to be certain the hardware in a machine
425 is properly shutdown, so do not be surprised if this code does not
426 initially work for you. As of this writing the exact hardware
427 interface is strongly in flux, so no good recommendation can be
431 bool "Build a kdump crash kernel"
432 depends on PPC64 || 6xx || FSL_BOOKE || (44x && !SMP)
433 select RELOCATABLE if (PPC64 && !COMPILE_TEST) || 44x || FSL_BOOKE
435 Build a kernel suitable for use as a kdump capture kernel.
436 The same kernel binary can be used as production kernel and dump
440 bool "Firmware-assisted dump"
441 depends on PPC64 && PPC_RTAS && CRASH_DUMP && KEXEC
443 A robust mechanism to get reliable kernel crash dump with
444 assistance from firmware. This approach does not use kexec,
445 instead firmware assists in booting the kdump kernel
446 while preserving memory contents. Firmware-assisted dump
447 is meant to be a kdump replacement offering robustness and
448 speed not possible without system firmware assistance.
453 bool "Distribute interrupts on all CPUs by default"
456 This option gives the kernel permission to distribute IRQs across
457 multiple CPUs. Saying N here will route all IRQs to the first
458 CPU. Generally saying Y is safe, although some problems have been
459 reported with SMP Power Macintoshes with this option enabled.
464 default y if SMP && PPC_PSERIES
470 depends on NEED_MULTIPLE_NODES
472 config USE_PERCPU_NUMA_NODE_ID
476 config HAVE_MEMORYLESS_NODES
480 config ARCH_SELECT_MEMORY_MODEL
484 config ARCH_FLATMEM_ENABLE
486 depends on (PPC64 && !NUMA) || PPC32
488 config ARCH_SPARSEMEM_ENABLE
491 select SPARSEMEM_VMEMMAP_ENABLE
493 config ARCH_SPARSEMEM_DEFAULT
495 depends on (SMP && PPC_PSERIES) || PPC_PS3
497 config SYS_SUPPORTS_HUGETLBFS
502 config ARCH_MEMORY_PROBE
504 depends on MEMORY_HOTPLUG
506 # Some NUMA nodes have memory ranges that span
507 # other nodes. Even though a pfn is valid and
508 # between a node's start and end pfns, it may not
509 # reside on that node. See memmap_init_zone()
511 config NODES_SPAN_OTHER_NODES
513 depends on NEED_MULTIPLE_NODES
515 config PPC_HAS_HASH_64K
521 bool "Using standard binutils settings"
525 Turning this option off allows you to select 256KB PAGE_SIZE on 44x.
526 Note, that kernel will be able to run only those applications,
527 which had been compiled using binutils later than 2.17.50.0.3 with
528 '-zmax-page-size' set to 256K (the default is 64K). Or, if using
529 the older binutils, you can patch them with a trivial patch, which
530 changes the ELF_MAXPAGESIZE definition from 0x10000 to 0x40000.
536 Select the kernel logical page size. Increasing the page size
537 will reduce software overhead at each page boundary, allow
538 hardware prefetch mechanisms to be more effective, and allow
539 larger dma transfers increasing IO efficiency and reducing
540 overhead. However the utilization of memory will increase.
541 For example, each cached file will using a multiple of the
542 page size to hold its contents and the difference between the
543 end of file and the end of page is wasted.
545 Some dedicated systems, such as software raid serving with
546 accelerated calculations, have shown significant increases.
548 If you configure a 64 bit kernel for 64k pages but the
549 processor does not support them, then the kernel will simulate
550 them with 4k pages, loading them on demand, but with the
551 reduced software overhead and larger internal fragmentation.
552 For the 32 bit kernel, a large page option will not be offered
553 unless it is supported by the configured processor.
555 If unsure, choose 4K_PAGES.
561 bool "16k page size" if 44x || PPC_8xx
564 bool "64k page size" if 44x || PPC_STD_MMU_64 || PPC_BOOK3E_64
565 depends on !PPC_FSL_BOOK3E
566 select PPC_HAS_HASH_64K if PPC_STD_MMU_64
568 config PPC_256K_PAGES
569 bool "256k page size" if 44x
570 depends on !STDBINUTILS
572 Make the page size 256k.
574 As the ELF standard only requires alignment to support page
575 sizes up to 64k, you will need to compile all of your user
576 space applications with a non-standard binutils settings
577 (see the STDBINUTILS description for details).
579 Say N unless you know what you are doing.
583 config FORCE_MAX_ZONEORDER
584 int "Maximum zone order"
585 range 9 64 if PPC64 && PPC_64K_PAGES
586 default "9" if PPC64 && PPC_64K_PAGES
587 range 13 64 if PPC64 && !PPC_64K_PAGES
588 default "13" if PPC64 && !PPC_64K_PAGES
589 range 9 64 if PPC32 && PPC_16K_PAGES
590 default "9" if PPC32 && PPC_16K_PAGES
591 range 7 64 if PPC32 && PPC_64K_PAGES
592 default "7" if PPC32 && PPC_64K_PAGES
593 range 5 64 if PPC32 && PPC_256K_PAGES
594 default "5" if PPC32 && PPC_256K_PAGES
598 The kernel memory allocator divides physically contiguous memory
599 blocks into "zones", where each zone is a power of two number of
600 pages. This option selects the largest power of two that the kernel
601 keeps in the memory allocator. If you need to allocate very large
602 blocks of physically contiguous memory, then you may need to
605 This config option is actually maximum order plus one. For example,
606 a value of 11 means that the largest free memory block is 2^10 pages.
608 The page size is not necessarily 4KB. For example, on 64-bit
609 systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES. Keep
610 this in mind when choosing a value for this option.
612 config PPC_SUBPAGE_PROT
613 bool "Support setting protections for 4k subpages"
614 depends on PPC_STD_MMU_64 && PPC_64K_PAGES
616 This option adds support for a system call to allow user programs
617 to set access permissions (read/write, readonly, or no access)
618 on the 4k subpages of each 64k page.
620 config PPC_COPRO_BASE
625 bool "SMT (Hyperthreading) scheduler support"
626 depends on PPC64 && SMP
628 SMT scheduler support improves the CPU scheduler's decision making
629 when dealing with POWER5 cpus at a cost of slightly increased
630 overhead in some places. If unsure say N here.
632 config PPC_DENORMALISATION
633 bool "PowerPC denormalisation exception handling"
634 depends on PPC_BOOK3S_64
635 default "y" if PPC_POWERNV
637 Add support for handling denormalisation of single precision
638 values. Useful for bare metal only. If unsure say Y here.
641 bool "Default bootloader kernel arguments"
644 string "Initial kernel command string"
645 depends on CMDLINE_BOOL
646 default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
648 On some platforms, there is currently no way for the boot loader to
649 pass arguments to the kernel. For these platforms, you can supply
650 some command-line options at build time by entering them here. In
651 most cases you will need to specify the root device here.
654 bool "Always use the default kernel command string"
655 depends on CMDLINE_BOOL
657 Always use the default kernel command string, even if the boot
658 loader passes other arguments to the kernel.
659 This is useful if you cannot or don't want to change the
660 command-line options your boot loader passes to the kernel.
663 string "Additional default image types"
665 List additional targets to be built by the bootwrapper here (separated
666 by spaces). This is useful for targets that depend of device tree
667 files in the .dts directory.
669 Targets in this list will be build as part of the default build
670 target, or when the user does a 'make zImage' or a
671 'make zImage.initrd'.
673 If unsure, leave blank
675 config ARCH_WANTS_FREEZER_CONTROL
679 source kernel/power/Kconfig
682 bool "Enable seccomp to safely compute untrusted bytecode"
686 This kernel feature is useful for number crunching applications
687 that may need to compute untrusted bytecode during their
688 execution. By using pipes or other transports made available to
689 the process as file descriptors supporting the read/write
690 syscalls, it's possible to isolate those applications in
691 their own address space using seccomp. Once seccomp is
692 enabled via /proc/<pid>/seccomp, it cannot be disabled
693 and the task is only allowed to execute a few safe syscalls
694 defined by each seccomp mode.
696 If unsure, say Y. Only embedded should say N here.
707 bool "Support for ISA-bus hardware"
711 Find out whether you have ISA slots on your motherboard. ISA is the
712 name of a bus system, i.e. the way the CPU talks to the other stuff
713 inside your box. If you have an Apple machine, say N here; if you
714 have an IBM RS/6000 or pSeries machine, say Y. If you have an
715 embedded board, consult your board documentation.
721 config NEED_DMA_MAP_STATE
722 def_bool (PPC64 || NOT_COHERENT_CACHE)
724 config NEED_SG_DMA_LENGTH
727 config GENERIC_ISA_DMA
729 depends on ISA_DMA_API
732 config PPC_INDIRECT_PCI
735 default y if 40x || 44x
749 select PPC_INDIRECT_PCI
755 depends on SUSPEND && (PPC_85xx || PPC_86xx)
757 Freescale MPC85xx/MPC86xx power management controller support
758 (suspend/resume). For MPC83xx see platforms/83xx/suspend.c
763 depends on SUSPEND && (44x || 40x)
765 PPC4xx Clock Power Management (CPM) support (suspend/resume).
766 It also enables support for two different idle states (idle-wait
773 bool "Freescale Local Bus support"
776 Enables reporting of errors from the Freescale local bus
777 controller. Also contains some common code used by
778 drivers for specific local bus peripherals.
782 depends on PPC_83xx || QUICC_ENGINE || CPM2
784 Freescale General-purpose Timers support
786 # Yes MCA RS/6000s exist but Linux-PPC does not currently support any
790 # Platforms that what PCI turned unconditionally just do select PCI
791 # in their config node. Platforms that want to choose at config
792 # time should select PPC_PCI_CHOICE
793 config PPC_PCI_CHOICE
797 bool "PCI support" if PPC_PCI_CHOICE
798 default y if !40x && !CPM2 && !8xx && !PPC_83xx \
799 && !PPC_85xx && !PPC_86xx && !GAMECUBE_COMMON
800 default PCI_QSPAN if !4xx && !CPM2 && 8xx
801 select GENERIC_PCI_IOMAP
803 Find out whether your system includes a PCI bus. PCI is the name of
804 a bus system, i.e. the way the CPU talks to the other stuff inside
805 your box. If you say Y here, the kernel will include drivers and
806 infrastructure code to support PCI bus devices.
816 depends on !4xx && !CPM2 && 8xx
819 Say Y here if you have a system based on a Motorola 8xx-series
820 embedded processor with a QSPAN PCI interface, otherwise say N.
824 depends on PCI && 8260
825 select PPC_INDIRECT_PCI
828 source "drivers/pci/pcie/Kconfig"
830 source "drivers/pci/Kconfig"
832 source "drivers/pcmcia/Kconfig"
834 source "drivers/pci/hotplug/Kconfig"
841 tristate "RapidIO support"
842 depends on HAS_RAPIDIO || PCI
844 If you say Y here, the kernel will include drivers and
845 infrastructure code to support RapidIO interconnect devices.
848 bool "Freescale Embedded SRIO Controller support"
849 depends on RAPIDIO = y && HAS_RAPIDIO
852 Include support for RapidIO controller on Freescale embedded
853 processors (MPC8548, MPC8641, etc).
855 source "drivers/rapidio/Kconfig"
859 config NONSTATIC_KERNEL
863 menu "Advanced setup"
866 config ADVANCED_OPTIONS
867 bool "Prompt for advanced kernel configuration options"
869 This option will enable prompting for a variety of advanced kernel
870 configuration options. These options can cause the kernel to not
871 work if they are set incorrectly, but can be used to optimize certain
872 aspects of kernel memory management.
874 Unless you know what you are doing, say N here.
876 comment "Default settings for advanced configuration options are used"
877 depends on !ADVANCED_OPTIONS
879 config LOWMEM_SIZE_BOOL
880 bool "Set maximum low memory"
881 depends on ADVANCED_OPTIONS
883 This option allows you to set the maximum amount of memory which
884 will be used as "low memory", that is, memory which the kernel can
885 access directly, without having to set up a kernel virtual mapping.
886 This can be useful in optimizing the layout of kernel virtual
889 Say N here unless you know what you are doing.
892 hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
895 config LOWMEM_CAM_NUM_BOOL
896 bool "Set number of CAMs to use to map low memory"
897 depends on ADVANCED_OPTIONS && FSL_BOOKE
899 This option allows you to set the maximum number of CAM slots that
900 will be used to map low memory. There are a limited number of slots
901 available and even more limited number that will fit in the L1 MMU.
902 However, using more entries will allow mapping more low memory. This
903 can be useful in optimizing the layout of kernel virtual memory.
905 Say N here unless you know what you are doing.
907 config LOWMEM_CAM_NUM
909 int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL
912 config DYNAMIC_MEMSTART
913 bool "Enable page aligned dynamic load address for kernel"
914 depends on ADVANCED_OPTIONS && FLATMEM && (FSL_BOOKE || 44x)
915 select NONSTATIC_KERNEL
917 This option enables the kernel to be loaded at any page aligned
918 physical address. The kernel creates a mapping from KERNELBASE to
919 the address where the kernel is loaded. The page size here implies
920 the TLB page size of the mapping for kernel on the particular platform.
921 Please refer to the init code for finding the TLB page size.
923 DYNAMIC_MEMSTART is an easy way of implementing pseudo-RELOCATABLE
924 kernel image, where the only restriction is the page aligned kernel
925 load address. When this option is enabled, the compile time physical
926 address CONFIG_PHYSICAL_START is ignored.
928 This option is overridden by CONFIG_RELOCATABLE
931 bool "Build a relocatable kernel"
932 depends on ADVANCED_OPTIONS && FLATMEM && (44x || FSL_BOOKE)
933 select NONSTATIC_KERNEL
935 This builds a kernel image that is capable of running at the
936 location the kernel is loaded at, without any alignment restrictions.
937 This feature is a superset of DYNAMIC_MEMSTART and hence overrides it.
939 One use is for the kexec on panic case where the recovery kernel
940 must live at a different physical address than the primary
943 Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address
944 it has been loaded at and the compile time physical addresses
945 CONFIG_PHYSICAL_START is ignored. However CONFIG_PHYSICAL_START
946 setting can still be useful to bootwrappers that need to know the
947 load address of the kernel (eg. u-boot/mkimage).
949 config RELOCATABLE_PPC32
951 depends on PPC32 && RELOCATABLE
953 config PAGE_OFFSET_BOOL
954 bool "Set custom page offset address"
955 depends on ADVANCED_OPTIONS
957 This option allows you to set the kernel virtual address at which
958 the kernel will map low memory. This can be useful in optimizing
959 the virtual memory layout of the system.
961 Say N here unless you know what you are doing.
964 hex "Virtual address of memory base" if PAGE_OFFSET_BOOL
967 config KERNEL_START_BOOL
968 bool "Set custom kernel base address"
969 depends on ADVANCED_OPTIONS
971 This option allows you to set the kernel virtual address at which
972 the kernel will be loaded. Normally this should match PAGE_OFFSET
973 however there are times (like kdump) that one might not want them
976 Say N here unless you know what you are doing.
979 hex "Virtual address of kernel base" if KERNEL_START_BOOL
980 default PAGE_OFFSET if PAGE_OFFSET_BOOL
981 default "0xc2000000" if CRASH_DUMP && !NONSTATIC_KERNEL
984 config PHYSICAL_START_BOOL
985 bool "Set physical address where the kernel is loaded"
986 depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE
988 This gives the physical address where the kernel is loaded.
990 Say N here unless you know what you are doing.
992 config PHYSICAL_START
993 hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL
994 default "0x02000000" if PPC_STD_MMU && CRASH_DUMP && !NONSTATIC_KERNEL
997 config PHYSICAL_ALIGN
999 default "0x04000000" if FSL_BOOKE
1001 This value puts the alignment restrictions on physical address
1002 where kernel is loaded and run from. Kernel is compiled for an
1003 address which meets above alignment restriction.
1005 config TASK_SIZE_BOOL
1006 bool "Set custom user task size"
1007 depends on ADVANCED_OPTIONS
1009 This option allows you to set the amount of virtual address space
1010 allocated to user tasks. This can be useful in optimizing the
1011 virtual memory layout of the system.
1013 Say N here unless you know what you are doing.
1016 hex "Size of user task space" if TASK_SIZE_BOOL
1017 default "0x80000000" if PPC_8xx
1018 default "0xc0000000"
1020 config CONSISTENT_SIZE_BOOL
1021 bool "Set custom consistent memory pool size"
1022 depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
1024 This option allows you to set the size of the
1025 consistent memory pool. This pool of virtual memory
1026 is used to make consistent memory allocations.
1028 config CONSISTENT_SIZE
1029 hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
1030 default "0x00200000" if NOT_COHERENT_CACHE
1033 bool "Pinned Kernel TLBs (860 ONLY)"
1034 depends on ADVANCED_OPTIONS && 8xx
1039 bool "Build a relocatable kernel"
1040 depends on !COMPILE_TEST
1041 select NONSTATIC_KERNEL
1043 This builds a kernel image that is capable of running anywhere
1044 in the RMA (real memory area) at any 16k-aligned base address.
1045 The kernel is linked as a position-independent executable (PIE)
1046 and contains dynamic relocations which are processed early
1047 in the bootup process.
1049 One use is for the kexec on panic case where the recovery kernel
1050 must live at a different physical address than the primary
1053 # This value must have zeroes in the bottom 60 bits otherwise lots will break
1056 default "0xc000000000000000"
1059 default "0xc000000000000000"
1060 config PHYSICAL_START
1062 default "0x00000000"
1068 source "net/Kconfig"
1070 source "drivers/Kconfig"
1074 source "arch/powerpc/sysdev/qe_lib/Kconfig"
1076 source "lib/Kconfig"
1078 source "arch/powerpc/Kconfig.debug"
1080 source "security/Kconfig"
1084 depends on COMPAT && KEYS
1087 source "crypto/Kconfig"
1089 config PPC_LIB_RHEAP
1092 source "arch/powerpc/kvm/Kconfig"