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))
403 kexec is a system call that implements the ability to shutdown your
404 current kernel, and to start another kernel. It is like a reboot
405 but it is independent of the system firmware. And like a reboot
406 you can start any kernel with it, not just Linux.
408 The name comes from the similarity to the exec system call.
410 It is an ongoing process to be certain the hardware in a machine
411 is properly shutdown, so do not be surprised if this code does not
412 initially work for you. As of this writing the exact hardware
413 interface is strongly in flux, so no good recommendation can be
417 bool "Build a kdump crash kernel"
418 depends on PPC64 || 6xx || FSL_BOOKE || (44x && !SMP)
419 select RELOCATABLE if (PPC64 && !COMPILE_TEST) || 44x || FSL_BOOKE
421 Build a kernel suitable for use as a kdump capture kernel.
422 The same kernel binary can be used as production kernel and dump
426 bool "Firmware-assisted dump"
427 depends on PPC64 && PPC_RTAS && CRASH_DUMP && KEXEC
429 A robust mechanism to get reliable kernel crash dump with
430 assistance from firmware. This approach does not use kexec,
431 instead firmware assists in booting the kdump kernel
432 while preserving memory contents. Firmware-assisted dump
433 is meant to be a kdump replacement offering robustness and
434 speed not possible without system firmware assistance.
439 bool "Distribute interrupts on all CPUs by default"
442 This option gives the kernel permission to distribute IRQs across
443 multiple CPUs. Saying N here will route all IRQs to the first
444 CPU. Generally saying Y is safe, although some problems have been
445 reported with SMP Power Macintoshes with this option enabled.
450 default y if SMP && PPC_PSERIES
456 depends on NEED_MULTIPLE_NODES
458 config USE_PERCPU_NUMA_NODE_ID
462 config HAVE_MEMORYLESS_NODES
466 config ARCH_SELECT_MEMORY_MODEL
470 config ARCH_FLATMEM_ENABLE
472 depends on (PPC64 && !NUMA) || PPC32
474 config ARCH_SPARSEMEM_ENABLE
477 select SPARSEMEM_VMEMMAP_ENABLE
479 config ARCH_SPARSEMEM_DEFAULT
481 depends on (SMP && PPC_PSERIES) || PPC_PS3
483 config SYS_SUPPORTS_HUGETLBFS
488 config ARCH_MEMORY_PROBE
490 depends on MEMORY_HOTPLUG
492 # Some NUMA nodes have memory ranges that span
493 # other nodes. Even though a pfn is valid and
494 # between a node's start and end pfns, it may not
495 # reside on that node. See memmap_init_zone()
497 config NODES_SPAN_OTHER_NODES
499 depends on NEED_MULTIPLE_NODES
501 config PPC_HAS_HASH_64K
507 bool "Using standard binutils settings"
511 Turning this option off allows you to select 256KB PAGE_SIZE on 44x.
512 Note, that kernel will be able to run only those applications,
513 which had been compiled using binutils later than 2.17.50.0.3 with
514 '-zmax-page-size' set to 256K (the default is 64K). Or, if using
515 the older binutils, you can patch them with a trivial patch, which
516 changes the ELF_MAXPAGESIZE definition from 0x10000 to 0x40000.
522 Select the kernel logical page size. Increasing the page size
523 will reduce software overhead at each page boundary, allow
524 hardware prefetch mechanisms to be more effective, and allow
525 larger dma transfers increasing IO efficiency and reducing
526 overhead. However the utilization of memory will increase.
527 For example, each cached file will using a multiple of the
528 page size to hold its contents and the difference between the
529 end of file and the end of page is wasted.
531 Some dedicated systems, such as software raid serving with
532 accelerated calculations, have shown significant increases.
534 If you configure a 64 bit kernel for 64k pages but the
535 processor does not support them, then the kernel will simulate
536 them with 4k pages, loading them on demand, but with the
537 reduced software overhead and larger internal fragmentation.
538 For the 32 bit kernel, a large page option will not be offered
539 unless it is supported by the configured processor.
541 If unsure, choose 4K_PAGES.
547 bool "16k page size" if 44x
550 bool "64k page size" if 44x || PPC_STD_MMU_64 || PPC_BOOK3E_64
551 depends on !PPC_FSL_BOOK3E
552 select PPC_HAS_HASH_64K if PPC_STD_MMU_64
554 config PPC_256K_PAGES
555 bool "256k page size" if 44x
556 depends on !STDBINUTILS
558 Make the page size 256k.
560 As the ELF standard only requires alignment to support page
561 sizes up to 64k, you will need to compile all of your user
562 space applications with a non-standard binutils settings
563 (see the STDBINUTILS description for details).
565 Say N unless you know what you are doing.
569 config FORCE_MAX_ZONEORDER
570 int "Maximum zone order"
571 range 9 64 if PPC64 && PPC_64K_PAGES
572 default "9" if PPC64 && PPC_64K_PAGES
573 range 13 64 if PPC64 && !PPC_64K_PAGES
574 default "13" if PPC64 && !PPC_64K_PAGES
575 range 9 64 if PPC32 && PPC_16K_PAGES
576 default "9" if PPC32 && PPC_16K_PAGES
577 range 7 64 if PPC32 && PPC_64K_PAGES
578 default "7" if PPC32 && PPC_64K_PAGES
579 range 5 64 if PPC32 && PPC_256K_PAGES
580 default "5" if PPC32 && PPC_256K_PAGES
584 The kernel memory allocator divides physically contiguous memory
585 blocks into "zones", where each zone is a power of two number of
586 pages. This option selects the largest power of two that the kernel
587 keeps in the memory allocator. If you need to allocate very large
588 blocks of physically contiguous memory, then you may need to
591 This config option is actually maximum order plus one. For example,
592 a value of 11 means that the largest free memory block is 2^10 pages.
594 The page size is not necessarily 4KB. For example, on 64-bit
595 systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES. Keep
596 this in mind when choosing a value for this option.
598 config PPC_SUBPAGE_PROT
599 bool "Support setting protections for 4k subpages"
600 depends on PPC_STD_MMU_64 && PPC_64K_PAGES
602 This option adds support for a system call to allow user programs
603 to set access permissions (read/write, readonly, or no access)
604 on the 4k subpages of each 64k page.
607 bool "SMT (Hyperthreading) scheduler support"
608 depends on PPC64 && SMP
610 SMT scheduler support improves the CPU scheduler's decision making
611 when dealing with POWER5 cpus at a cost of slightly increased
612 overhead in some places. If unsure say N here.
614 config PPC_DENORMALISATION
615 bool "PowerPC denormalisation exception handling"
616 depends on PPC_BOOK3S_64
617 default "y" if PPC_POWERNV
619 Add support for handling denormalisation of single precision
620 values. Useful for bare metal only. If unsure say Y here.
623 bool "Default bootloader kernel arguments"
626 string "Initial kernel command string"
627 depends on CMDLINE_BOOL
628 default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
630 On some platforms, there is currently no way for the boot loader to
631 pass arguments to the kernel. For these platforms, you can supply
632 some command-line options at build time by entering them here. In
633 most cases you will need to specify the root device here.
636 bool "Always use the default kernel command string"
637 depends on CMDLINE_BOOL
639 Always use the default kernel command string, even if the boot
640 loader passes other arguments to the kernel.
641 This is useful if you cannot or don't want to change the
642 command-line options your boot loader passes to the kernel.
645 string "Additional default image types"
647 List additional targets to be built by the bootwrapper here (separated
648 by spaces). This is useful for targets that depend of device tree
649 files in the .dts directory.
651 Targets in this list will be build as part of the default build
652 target, or when the user does a 'make zImage' or a
653 'make zImage.initrd'.
655 If unsure, leave blank
657 config ARCH_WANTS_FREEZER_CONTROL
661 source kernel/power/Kconfig
664 bool "Enable seccomp to safely compute untrusted bytecode"
668 This kernel feature is useful for number crunching applications
669 that may need to compute untrusted bytecode during their
670 execution. By using pipes or other transports made available to
671 the process as file descriptors supporting the read/write
672 syscalls, it's possible to isolate those applications in
673 their own address space using seccomp. Once seccomp is
674 enabled via /proc/<pid>/seccomp, it cannot be disabled
675 and the task is only allowed to execute a few safe syscalls
676 defined by each seccomp mode.
678 If unsure, say Y. Only embedded should say N here.
689 bool "Support for ISA-bus hardware"
693 Find out whether you have ISA slots on your motherboard. ISA is the
694 name of a bus system, i.e. the way the CPU talks to the other stuff
695 inside your box. If you have an Apple machine, say N here; if you
696 have an IBM RS/6000 or pSeries machine, say Y. If you have an
697 embedded board, consult your board documentation.
703 config NEED_DMA_MAP_STATE
704 def_bool (PPC64 || NOT_COHERENT_CACHE)
706 config NEED_SG_DMA_LENGTH
709 config GENERIC_ISA_DMA
711 depends on ISA_DMA_API
714 config PPC_INDIRECT_PCI
717 default y if 40x || 44x
731 select PPC_INDIRECT_PCI
737 depends on SUSPEND && (PPC_85xx || PPC_86xx)
739 Freescale MPC85xx/MPC86xx power management controller support
740 (suspend/resume). For MPC83xx see platforms/83xx/suspend.c
745 depends on SUSPEND && (44x || 40x)
747 PPC4xx Clock Power Management (CPM) support (suspend/resume).
748 It also enables support for two different idle states (idle-wait
755 bool "Freescale Local Bus support"
758 Enables reporting of errors from the Freescale local bus
759 controller. Also contains some common code used by
760 drivers for specific local bus peripherals.
764 depends on PPC_83xx || QUICC_ENGINE || CPM2
766 Freescale General-purpose Timers support
768 # Yes MCA RS/6000s exist but Linux-PPC does not currently support any
772 # Platforms that what PCI turned unconditionally just do select PCI
773 # in their config node. Platforms that want to choose at config
774 # time should select PPC_PCI_CHOICE
775 config PPC_PCI_CHOICE
779 bool "PCI support" if PPC_PCI_CHOICE
780 default y if !40x && !CPM2 && !8xx && !PPC_83xx \
781 && !PPC_85xx && !PPC_86xx && !GAMECUBE_COMMON
782 default PCI_QSPAN if !4xx && !CPM2 && 8xx
783 select GENERIC_PCI_IOMAP
785 Find out whether your system includes a PCI bus. PCI is the name of
786 a bus system, i.e. the way the CPU talks to the other stuff inside
787 your box. If you say Y here, the kernel will include drivers and
788 infrastructure code to support PCI bus devices.
798 depends on !4xx && !CPM2 && 8xx
801 Say Y here if you have a system based on a Motorola 8xx-series
802 embedded processor with a QSPAN PCI interface, otherwise say N.
806 depends on PCI && 8260
807 select PPC_INDIRECT_PCI
810 source "drivers/pci/pcie/Kconfig"
812 source "drivers/pci/Kconfig"
814 source "drivers/pcmcia/Kconfig"
816 source "drivers/pci/hotplug/Kconfig"
823 tristate "RapidIO support"
824 depends on HAS_RAPIDIO || PCI
826 If you say Y here, the kernel will include drivers and
827 infrastructure code to support RapidIO interconnect devices.
830 bool "Freescale Embedded SRIO Controller support"
831 depends on RAPIDIO = y && HAS_RAPIDIO
834 Include support for RapidIO controller on Freescale embedded
835 processors (MPC8548, MPC8641, etc).
837 source "drivers/rapidio/Kconfig"
841 config NONSTATIC_KERNEL
845 menu "Advanced setup"
848 config ADVANCED_OPTIONS
849 bool "Prompt for advanced kernel configuration options"
851 This option will enable prompting for a variety of advanced kernel
852 configuration options. These options can cause the kernel to not
853 work if they are set incorrectly, but can be used to optimize certain
854 aspects of kernel memory management.
856 Unless you know what you are doing, say N here.
858 comment "Default settings for advanced configuration options are used"
859 depends on !ADVANCED_OPTIONS
861 config LOWMEM_SIZE_BOOL
862 bool "Set maximum low memory"
863 depends on ADVANCED_OPTIONS
865 This option allows you to set the maximum amount of memory which
866 will be used as "low memory", that is, memory which the kernel can
867 access directly, without having to set up a kernel virtual mapping.
868 This can be useful in optimizing the layout of kernel virtual
871 Say N here unless you know what you are doing.
874 hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
877 config LOWMEM_CAM_NUM_BOOL
878 bool "Set number of CAMs to use to map low memory"
879 depends on ADVANCED_OPTIONS && FSL_BOOKE
881 This option allows you to set the maximum number of CAM slots that
882 will be used to map low memory. There are a limited number of slots
883 available and even more limited number that will fit in the L1 MMU.
884 However, using more entries will allow mapping more low memory. This
885 can be useful in optimizing the layout of kernel virtual memory.
887 Say N here unless you know what you are doing.
889 config LOWMEM_CAM_NUM
891 int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL
894 config DYNAMIC_MEMSTART
895 bool "Enable page aligned dynamic load address for kernel"
896 depends on ADVANCED_OPTIONS && FLATMEM && (FSL_BOOKE || 44x)
897 select NONSTATIC_KERNEL
899 This option enables the kernel to be loaded at any page aligned
900 physical address. The kernel creates a mapping from KERNELBASE to
901 the address where the kernel is loaded. The page size here implies
902 the TLB page size of the mapping for kernel on the particular platform.
903 Please refer to the init code for finding the TLB page size.
905 DYNAMIC_MEMSTART is an easy way of implementing pseudo-RELOCATABLE
906 kernel image, where the only restriction is the page aligned kernel
907 load address. When this option is enabled, the compile time physical
908 address CONFIG_PHYSICAL_START is ignored.
910 This option is overridden by CONFIG_RELOCATABLE
913 bool "Build a relocatable kernel"
914 depends on ADVANCED_OPTIONS && FLATMEM && (44x || FSL_BOOKE)
915 select NONSTATIC_KERNEL
917 This builds a kernel image that is capable of running at the
918 location the kernel is loaded at, without any alignment restrictions.
919 This feature is a superset of DYNAMIC_MEMSTART and hence overrides it.
921 One use is for the kexec on panic case where the recovery kernel
922 must live at a different physical address than the primary
925 Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address
926 it has been loaded at and the compile time physical addresses
927 CONFIG_PHYSICAL_START is ignored. However CONFIG_PHYSICAL_START
928 setting can still be useful to bootwrappers that need to know the
929 load address of the kernel (eg. u-boot/mkimage).
931 config RELOCATABLE_PPC32
933 depends on PPC32 && RELOCATABLE
935 config PAGE_OFFSET_BOOL
936 bool "Set custom page offset address"
937 depends on ADVANCED_OPTIONS
939 This option allows you to set the kernel virtual address at which
940 the kernel will map low memory. This can be useful in optimizing
941 the virtual memory layout of the system.
943 Say N here unless you know what you are doing.
946 hex "Virtual address of memory base" if PAGE_OFFSET_BOOL
949 config KERNEL_START_BOOL
950 bool "Set custom kernel base address"
951 depends on ADVANCED_OPTIONS
953 This option allows you to set the kernel virtual address at which
954 the kernel will be loaded. Normally this should match PAGE_OFFSET
955 however there are times (like kdump) that one might not want them
958 Say N here unless you know what you are doing.
961 hex "Virtual address of kernel base" if KERNEL_START_BOOL
962 default PAGE_OFFSET if PAGE_OFFSET_BOOL
963 default "0xc2000000" if CRASH_DUMP && !NONSTATIC_KERNEL
966 config PHYSICAL_START_BOOL
967 bool "Set physical address where the kernel is loaded"
968 depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE
970 This gives the physical address where the kernel is loaded.
972 Say N here unless you know what you are doing.
974 config PHYSICAL_START
975 hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL
976 default "0x02000000" if PPC_STD_MMU && CRASH_DUMP && !NONSTATIC_KERNEL
979 config PHYSICAL_ALIGN
981 default "0x04000000" if FSL_BOOKE
983 This value puts the alignment restrictions on physical address
984 where kernel is loaded and run from. Kernel is compiled for an
985 address which meets above alignment restriction.
987 config TASK_SIZE_BOOL
988 bool "Set custom user task size"
989 depends on ADVANCED_OPTIONS
991 This option allows you to set the amount of virtual address space
992 allocated to user tasks. This can be useful in optimizing the
993 virtual memory layout of the system.
995 Say N here unless you know what you are doing.
998 hex "Size of user task space" if TASK_SIZE_BOOL
999 default "0x80000000" if PPC_8xx
1000 default "0xc0000000"
1002 config CONSISTENT_SIZE_BOOL
1003 bool "Set custom consistent memory pool size"
1004 depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
1006 This option allows you to set the size of the
1007 consistent memory pool. This pool of virtual memory
1008 is used to make consistent memory allocations.
1010 config CONSISTENT_SIZE
1011 hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
1012 default "0x00200000" if NOT_COHERENT_CACHE
1015 bool "Pinned Kernel TLBs (860 ONLY)"
1016 depends on ADVANCED_OPTIONS && 8xx
1021 bool "Build a relocatable kernel"
1022 depends on !COMPILE_TEST
1023 select NONSTATIC_KERNEL
1025 This builds a kernel image that is capable of running anywhere
1026 in the RMA (real memory area) at any 16k-aligned base address.
1027 The kernel is linked as a position-independent executable (PIE)
1028 and contains dynamic relocations which are processed early
1029 in the bootup process.
1031 One use is for the kexec on panic case where the recovery kernel
1032 must live at a different physical address than the primary
1035 # This value must have zeroes in the bottom 60 bits otherwise lots will break
1038 default "0xc000000000000000"
1041 default "0xc000000000000000"
1042 config PHYSICAL_START
1044 default "0x00000000"
1050 source "net/Kconfig"
1052 source "drivers/Kconfig"
1056 source "arch/powerpc/sysdev/qe_lib/Kconfig"
1058 source "lib/Kconfig"
1060 source "arch/powerpc/Kconfig.debug"
1062 source "security/Kconfig"
1066 depends on COMPAT && KEYS
1069 source "crypto/Kconfig"
1071 config PPC_LIB_RHEAP
1074 source "arch/powerpc/kvm/Kconfig"