1 source "arch/powerpc/platforms/Kconfig.cputype"
20 config ARCH_PHYS_ADDR_T_64BIT
21 def_bool PPC64 || PHYS_64BIT
23 config ARCH_DMA_ADDR_T_64BIT
24 def_bool ARCH_PHYS_ADDR_T_64BIT
30 config HAVE_SETUP_PER_CPU_AREA
33 config NEED_PER_CPU_EMBED_FIRST_CHUNK
37 int "Number of virtual interrupt numbers"
41 This defines the number of virtual interrupt numbers the kernel
42 can manage. Virtual interrupt numbers are what you see in
43 /proc/interrupts. If you configure your system to have too few,
44 drivers will fail to load or worse - handle with care.
46 config STACKTRACE_SUPPORT
50 config HAVE_LATENCYTOP_SUPPORT
53 config TRACE_IRQFLAGS_SUPPORT
57 config LOCKDEP_SUPPORT
61 config RWSEM_GENERIC_SPINLOCK
64 config RWSEM_XCHGADD_ALGORITHM
68 config GENERIC_LOCKBREAK
71 depends on SMP && PREEMPT
73 config ARCH_HAS_ILOG2_U32
77 config ARCH_HAS_ILOG2_U64
81 config GENERIC_HWEIGHT
88 select ARCH_MIGHT_HAVE_PC_PARPORT
89 select ARCH_MIGHT_HAVE_PC_SERIO
92 select OF_EARLY_FLATTREE
93 select OF_RESERVED_MEM
94 select HAVE_FTRACE_MCOUNT_RECORD
95 select HAVE_DYNAMIC_FTRACE
96 select HAVE_FUNCTION_TRACER
97 select HAVE_FUNCTION_GRAPH_TRACER
98 select SYSCTL_EXCEPTION_TRACE
99 select ARCH_WANT_OPTIONAL_GPIOLIB
100 select VIRT_TO_BUS if !PPC64
102 select HAVE_IOREMAP_PROT
103 select HAVE_EFFICIENT_UNALIGNED_ACCESS if !CPU_LITTLE_ENDIAN
105 select HAVE_ARCH_KGDB
106 select HAVE_KRETPROBES
107 select HAVE_ARCH_TRACEHOOK
109 select HAVE_MEMBLOCK_NODE_MAP
110 select HAVE_DMA_ATTRS
111 select HAVE_DMA_API_DEBUG
113 select HAVE_DEBUG_KMEMLEAK
114 select GENERIC_ATOMIC64 if PPC32
115 select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
116 select HAVE_PERF_EVENTS
117 select HAVE_REGS_AND_STACK_ACCESS_API
118 select HAVE_HW_BREAKPOINT if PERF_EVENTS && PPC_BOOK3S_64
119 select ARCH_WANT_IPC_PARSE_VERSION
122 select GENERIC_IRQ_SHOW
123 select GENERIC_IRQ_SHOW_LEVEL
124 select IRQ_FORCED_THREADING
125 select HAVE_RCU_TABLE_FREE if SMP
126 select HAVE_SYSCALL_TRACEPOINTS
127 select HAVE_BPF_JIT if PPC64
128 select HAVE_ARCH_JUMP_LABEL
129 select ARCH_HAVE_NMI_SAFE_CMPXCHG
130 select GENERIC_SMP_IDLE_THREAD
131 select GENERIC_CMOS_UPDATE
132 select GENERIC_TIME_VSYSCALL_OLD
133 select GENERIC_CLOCKEVENTS
134 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
135 select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
136 select GENERIC_STRNCPY_FROM_USER
137 select GENERIC_STRNLEN_USER
138 select HAVE_MOD_ARCH_SPECIFIC
139 select MODULES_USE_ELF_RELA
140 select CLONE_BACKWARDS
141 select ARCH_USE_BUILTIN_BSWAP
142 select OLD_SIGSUSPEND
143 select OLD_SIGACTION if PPC32
144 select HAVE_DEBUG_STACKOVERFLOW
145 select HAVE_IRQ_EXIT_ON_IRQ_STACK
146 select ARCH_USE_CMPXCHG_LOCKREF if PPC64
147 select HAVE_ARCH_AUDITSYSCALL
148 select ARCH_SUPPORTS_ATOMIC_RMW
151 def_bool CPU_LITTLE_ENDIAN
164 select COMPAT_BINFMT_ELF
165 select ARCH_WANT_OLD_COMPAT_IPC
166 select COMPAT_OLD_SIGACTION
168 config SYSVIPC_COMPAT
170 depends on COMPAT && SYSVIPC
173 # All PPC32s use generic nvram driver through ppc_md
178 config SCHED_OMIT_FRAME_POINTER
182 config ARCH_MAY_HAVE_PC_FDC
184 default !PPC_PSERIES || PCI
189 config PPC_UDBG_16550
193 config GENERIC_TBSYNC
195 default y if PPC32 && SMP
207 config SYS_SUPPORTS_APM_EMULATION
208 default y if PMAC_APM_EMU
214 Used to allow a board to specify it wants an ePAPR compliant wrapper.
217 config DEFAULT_UIMAGE
220 Used to allow a board to specify it wants a uImage built by default
223 config ARCH_HIBERNATION_POSSIBLE
227 config ARCH_SUSPEND_POSSIBLE
229 depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx || \
230 (PPC_85xx && !PPC_E500MC) || PPC_86xx || PPC_PSERIES \
233 config PPC_DCR_NATIVE
243 depends on PPC_DCR_NATIVE || PPC_DCR_MMIO
246 config PPC_OF_PLATFORM_PCI
249 depends on PPC64 # not supported on 32 bits yet
252 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
255 config ARCH_SUPPORTS_UPROBES
258 config PPC_ADV_DEBUG_REGS
260 depends on 40x || BOOKE
263 config PPC_ADV_DEBUG_IACS
265 depends on PPC_ADV_DEBUG_REGS
269 config PPC_ADV_DEBUG_DACS
271 depends on PPC_ADV_DEBUG_REGS
274 config PPC_ADV_DEBUG_DVCS
276 depends on PPC_ADV_DEBUG_REGS
280 config PPC_ADV_DEBUG_DAC_RANGE
282 depends on PPC_ADV_DEBUG_REGS && 44x
285 config PPC_EMULATE_SSTEP
287 default y if KPROBES || UPROBES || XMON || HAVE_HW_BREAKPOINT
289 source "init/Kconfig"
291 source "kernel/Kconfig.freezer"
293 source "arch/powerpc/sysdev/Kconfig"
294 source "arch/powerpc/platforms/Kconfig"
296 menu "Kernel options"
299 bool "High memory support"
302 source kernel/Kconfig.hz
303 source kernel/Kconfig.preempt
304 source "fs/Kconfig.binfmt"
306 config HUGETLB_PAGE_SIZE_VARIABLE
308 depends on HUGETLB_PAGE
311 config MATH_EMULATION
312 bool "Math emulation"
313 depends on 4xx || 8xx || PPC_MPC832x || BOOKE
315 Some PowerPC chips designed for embedded applications do not have
316 a floating-point unit and therefore do not implement the
317 floating-point instructions in the PowerPC instruction set. If you
318 say Y here, the kernel will include code to emulate a floating-point
319 unit, which will allow programs that use floating-point
322 This is also useful to emulate missing (optional) instructions
323 such as fsqrt on cores that do have an FPU but do not implement
324 them (such as Freescale BookE).
327 prompt "Math emulation options"
328 default MATH_EMULATION_FULL
329 depends on MATH_EMULATION
331 config MATH_EMULATION_FULL
332 bool "Emulate all the floating point instructions"
334 Select this option will enable the kernel to support to emulate
335 all the floating point instructions. If your SoC doesn't have
336 a FPU, you should select this.
338 config MATH_EMULATION_HW_UNIMPLEMENTED
339 bool "Just emulate the FPU unimplemented instructions"
341 Select this if you know there does have a hardware FPU on your
342 SoC, but some floating point instructions are not implemented by that.
346 config PPC_TRANSACTIONAL_MEM
347 bool "Transactional Memory support for POWERPC"
348 depends on PPC_BOOK3S_64
354 Support user-mode Transactional Memory on POWERPC.
360 bool "SWIOTLB support"
364 Support for IO bounce buffering for systems without an IOMMU.
365 This allows us to DMA to the full physical address space on
366 platforms where the size of a physical address is larger
367 than the bus address. Not all platforms support this.
370 bool "Support for enabling/disabling CPUs"
371 depends on SMP && (PPC_PSERIES || \
372 PPC_PMAC || PPC_POWERNV || (PPC_85xx && !PPC_E500MC))
374 Say Y here to be able to disable and re-enable individual
375 CPUs at runtime on SMP machines.
377 Say N if you are unsure.
379 config ARCH_CPU_PROBE_RELEASE
381 depends on HOTPLUG_CPU
383 config ARCH_ENABLE_MEMORY_HOTPLUG
386 config ARCH_HAS_WALK_MEMORY
389 config ARCH_ENABLE_MEMORY_HOTREMOVE
392 config PPC64_SUPPORTS_MEMORY_FAILURE
393 bool "Add support for memory hwpoison"
394 depends on PPC_BOOK3S_64
395 default "y" if PPC_POWERNV
396 select ARCH_SUPPORTS_MEMORY_FAILURE
399 bool "kexec system call"
400 depends on (PPC_BOOK3S || FSL_BOOKE || (44x && !SMP))
402 kexec is a system call that implements the ability to shutdown your
403 current kernel, and to start another kernel. It is like a reboot
404 but it is independent of the system firmware. And like a reboot
405 you can start any kernel with it, not just Linux.
407 The name comes from the similarity to the exec system call.
409 It is an ongoing process to be certain the hardware in a machine
410 is properly shutdown, so do not be surprised if this code does not
411 initially work for you. As of this writing the exact hardware
412 interface is strongly in flux, so no good recommendation can be
416 bool "Build a kdump crash kernel"
417 depends on PPC64 || 6xx || FSL_BOOKE || (44x && !SMP)
418 select RELOCATABLE if (PPC64 && !COMPILE_TEST) || 44x || FSL_BOOKE
420 Build a kernel suitable for use as a kdump capture kernel.
421 The same kernel binary can be used as production kernel and dump
425 bool "Firmware-assisted dump"
426 depends on PPC64 && PPC_RTAS && CRASH_DUMP && KEXEC
428 A robust mechanism to get reliable kernel crash dump with
429 assistance from firmware. This approach does not use kexec,
430 instead firmware assists in booting the kdump kernel
431 while preserving memory contents. Firmware-assisted dump
432 is meant to be a kdump replacement offering robustness and
433 speed not possible without system firmware assistance.
438 bool "Distribute interrupts on all CPUs by default"
441 This option gives the kernel permission to distribute IRQs across
442 multiple CPUs. Saying N here will route all IRQs to the first
443 CPU. Generally saying Y is safe, although some problems have been
444 reported with SMP Power Macintoshes with this option enabled.
449 default y if SMP && PPC_PSERIES
455 depends on NEED_MULTIPLE_NODES
457 config USE_PERCPU_NUMA_NODE_ID
461 config HAVE_MEMORYLESS_NODES
465 config ARCH_SELECT_MEMORY_MODEL
469 config ARCH_FLATMEM_ENABLE
471 depends on (PPC64 && !NUMA) || PPC32
473 config ARCH_SPARSEMEM_ENABLE
476 select SPARSEMEM_VMEMMAP_ENABLE
478 config ARCH_SPARSEMEM_DEFAULT
480 depends on (SMP && PPC_PSERIES) || PPC_PS3
482 config SYS_SUPPORTS_HUGETLBFS
487 config ARCH_MEMORY_PROBE
489 depends on MEMORY_HOTPLUG
491 # Some NUMA nodes have memory ranges that span
492 # other nodes. Even though a pfn is valid and
493 # between a node's start and end pfns, it may not
494 # reside on that node. See memmap_init_zone()
496 config NODES_SPAN_OTHER_NODES
498 depends on NEED_MULTIPLE_NODES
500 config PPC_HAS_HASH_64K
506 bool "Using standard binutils settings"
510 Turning this option off allows you to select 256KB PAGE_SIZE on 44x.
511 Note, that kernel will be able to run only those applications,
512 which had been compiled using binutils later than 2.17.50.0.3 with
513 '-zmax-page-size' set to 256K (the default is 64K). Or, if using
514 the older binutils, you can patch them with a trivial patch, which
515 changes the ELF_MAXPAGESIZE definition from 0x10000 to 0x40000.
521 Select the kernel logical page size. Increasing the page size
522 will reduce software overhead at each page boundary, allow
523 hardware prefetch mechanisms to be more effective, and allow
524 larger dma transfers increasing IO efficiency and reducing
525 overhead. However the utilization of memory will increase.
526 For example, each cached file will using a multiple of the
527 page size to hold its contents and the difference between the
528 end of file and the end of page is wasted.
530 Some dedicated systems, such as software raid serving with
531 accelerated calculations, have shown significant increases.
533 If you configure a 64 bit kernel for 64k pages but the
534 processor does not support them, then the kernel will simulate
535 them with 4k pages, loading them on demand, but with the
536 reduced software overhead and larger internal fragmentation.
537 For the 32 bit kernel, a large page option will not be offered
538 unless it is supported by the configured processor.
540 If unsure, choose 4K_PAGES.
546 bool "16k page size" if 44x
549 bool "64k page size" if 44x || PPC_STD_MMU_64 || PPC_BOOK3E_64
550 depends on !PPC_FSL_BOOK3E
551 select PPC_HAS_HASH_64K if PPC_STD_MMU_64
553 config PPC_256K_PAGES
554 bool "256k page size" if 44x
555 depends on !STDBINUTILS
557 Make the page size 256k.
559 As the ELF standard only requires alignment to support page
560 sizes up to 64k, you will need to compile all of your user
561 space applications with a non-standard binutils settings
562 (see the STDBINUTILS description for details).
564 Say N unless you know what you are doing.
568 config FORCE_MAX_ZONEORDER
569 int "Maximum zone order"
570 range 9 64 if PPC64 && PPC_64K_PAGES
571 default "9" if PPC64 && PPC_64K_PAGES
572 range 13 64 if PPC64 && !PPC_64K_PAGES
573 default "13" if PPC64 && !PPC_64K_PAGES
574 range 9 64 if PPC32 && PPC_16K_PAGES
575 default "9" if PPC32 && PPC_16K_PAGES
576 range 7 64 if PPC32 && PPC_64K_PAGES
577 default "7" if PPC32 && PPC_64K_PAGES
578 range 5 64 if PPC32 && PPC_256K_PAGES
579 default "5" if PPC32 && PPC_256K_PAGES
583 The kernel memory allocator divides physically contiguous memory
584 blocks into "zones", where each zone is a power of two number of
585 pages. This option selects the largest power of two that the kernel
586 keeps in the memory allocator. If you need to allocate very large
587 blocks of physically contiguous memory, then you may need to
590 This config option is actually maximum order plus one. For example,
591 a value of 11 means that the largest free memory block is 2^10 pages.
593 The page size is not necessarily 4KB. For example, on 64-bit
594 systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES. Keep
595 this in mind when choosing a value for this option.
597 config PPC_SUBPAGE_PROT
598 bool "Support setting protections for 4k subpages"
599 depends on PPC_STD_MMU_64 && PPC_64K_PAGES
601 This option adds support for a system call to allow user programs
602 to set access permissions (read/write, readonly, or no access)
603 on the 4k subpages of each 64k page.
606 bool "SMT (Hyperthreading) scheduler support"
607 depends on PPC64 && SMP
609 SMT scheduler support improves the CPU scheduler's decision making
610 when dealing with POWER5 cpus at a cost of slightly increased
611 overhead in some places. If unsure say N here.
613 config PPC_DENORMALISATION
614 bool "PowerPC denormalisation exception handling"
615 depends on PPC_BOOK3S_64
616 default "y" if PPC_POWERNV
618 Add support for handling denormalisation of single precision
619 values. Useful for bare metal only. If unsure say Y here.
622 bool "Default bootloader kernel arguments"
625 string "Initial kernel command string"
626 depends on CMDLINE_BOOL
627 default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
629 On some platforms, there is currently no way for the boot loader to
630 pass arguments to the kernel. For these platforms, you can supply
631 some command-line options at build time by entering them here. In
632 most cases you will need to specify the root device here.
635 bool "Always use the default kernel command string"
636 depends on CMDLINE_BOOL
638 Always use the default kernel command string, even if the boot
639 loader passes other arguments to the kernel.
640 This is useful if you cannot or don't want to change the
641 command-line options your boot loader passes to the kernel.
644 string "Additional default image types"
646 List additional targets to be built by the bootwrapper here (separated
647 by spaces). This is useful for targets that depend of device tree
648 files in the .dts directory.
650 Targets in this list will be build as part of the default build
651 target, or when the user does a 'make zImage' or a
652 'make zImage.initrd'.
654 If unsure, leave blank
656 config ARCH_WANTS_FREEZER_CONTROL
660 source kernel/power/Kconfig
663 bool "Enable seccomp to safely compute untrusted bytecode"
667 This kernel feature is useful for number crunching applications
668 that may need to compute untrusted bytecode during their
669 execution. By using pipes or other transports made available to
670 the process as file descriptors supporting the read/write
671 syscalls, it's possible to isolate those applications in
672 their own address space using seccomp. Once seccomp is
673 enabled via /proc/<pid>/seccomp, it cannot be disabled
674 and the task is only allowed to execute a few safe syscalls
675 defined by each seccomp mode.
677 If unsure, say Y. Only embedded should say N here.
688 bool "Support for ISA-bus hardware"
692 Find out whether you have ISA slots on your motherboard. ISA is the
693 name of a bus system, i.e. the way the CPU talks to the other stuff
694 inside your box. If you have an Apple machine, say N here; if you
695 have an IBM RS/6000 or pSeries machine, say Y. If you have an
696 embedded board, consult your board documentation.
702 config NEED_DMA_MAP_STATE
703 def_bool (PPC64 || NOT_COHERENT_CACHE)
705 config NEED_SG_DMA_LENGTH
708 config GENERIC_ISA_DMA
710 depends on ISA_DMA_API
713 config PPC_INDIRECT_PCI
716 default y if 40x || 44x
730 select PPC_INDIRECT_PCI
736 depends on SUSPEND && (PPC_85xx || PPC_86xx)
738 Freescale MPC85xx/MPC86xx power management controller support
739 (suspend/resume). For MPC83xx see platforms/83xx/suspend.c
744 depends on SUSPEND && (44x || 40x)
746 PPC4xx Clock Power Management (CPM) support (suspend/resume).
747 It also enables support for two different idle states (idle-wait
754 bool "Freescale Local Bus support"
757 Enables reporting of errors from the Freescale local bus
758 controller. Also contains some common code used by
759 drivers for specific local bus peripherals.
763 depends on PPC_83xx || QUICC_ENGINE || CPM2
765 Freescale General-purpose Timers support
767 # Yes MCA RS/6000s exist but Linux-PPC does not currently support any
771 # Platforms that what PCI turned unconditionally just do select PCI
772 # in their config node. Platforms that want to choose at config
773 # time should select PPC_PCI_CHOICE
774 config PPC_PCI_CHOICE
778 bool "PCI support" if PPC_PCI_CHOICE
779 default y if !40x && !CPM2 && !8xx && !PPC_83xx \
780 && !PPC_85xx && !PPC_86xx && !GAMECUBE_COMMON
781 default PCI_QSPAN if !4xx && !CPM2 && 8xx
782 select GENERIC_PCI_IOMAP
784 Find out whether your system includes a PCI bus. PCI is the name of
785 a bus system, i.e. the way the CPU talks to the other stuff inside
786 your box. If you say Y here, the kernel will include drivers and
787 infrastructure code to support PCI bus devices.
797 depends on !4xx && !CPM2 && 8xx
800 Say Y here if you have a system based on a Motorola 8xx-series
801 embedded processor with a QSPAN PCI interface, otherwise say N.
805 depends on PCI && 8260
806 select PPC_INDIRECT_PCI
809 source "drivers/pci/pcie/Kconfig"
811 source "drivers/pci/Kconfig"
813 source "drivers/pcmcia/Kconfig"
815 source "drivers/pci/hotplug/Kconfig"
822 tristate "RapidIO support"
823 depends on HAS_RAPIDIO || PCI
825 If you say Y here, the kernel will include drivers and
826 infrastructure code to support RapidIO interconnect devices.
829 bool "Freescale Embedded SRIO Controller support"
830 depends on RAPIDIO = y && HAS_RAPIDIO
833 Include support for RapidIO controller on Freescale embedded
834 processors (MPC8548, MPC8641, etc).
836 source "drivers/rapidio/Kconfig"
840 config NONSTATIC_KERNEL
844 menu "Advanced setup"
847 config ADVANCED_OPTIONS
848 bool "Prompt for advanced kernel configuration options"
850 This option will enable prompting for a variety of advanced kernel
851 configuration options. These options can cause the kernel to not
852 work if they are set incorrectly, but can be used to optimize certain
853 aspects of kernel memory management.
855 Unless you know what you are doing, say N here.
857 comment "Default settings for advanced configuration options are used"
858 depends on !ADVANCED_OPTIONS
860 config LOWMEM_SIZE_BOOL
861 bool "Set maximum low memory"
862 depends on ADVANCED_OPTIONS
864 This option allows you to set the maximum amount of memory which
865 will be used as "low memory", that is, memory which the kernel can
866 access directly, without having to set up a kernel virtual mapping.
867 This can be useful in optimizing the layout of kernel virtual
870 Say N here unless you know what you are doing.
873 hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
876 config LOWMEM_CAM_NUM_BOOL
877 bool "Set number of CAMs to use to map low memory"
878 depends on ADVANCED_OPTIONS && FSL_BOOKE
880 This option allows you to set the maximum number of CAM slots that
881 will be used to map low memory. There are a limited number of slots
882 available and even more limited number that will fit in the L1 MMU.
883 However, using more entries will allow mapping more low memory. This
884 can be useful in optimizing the layout of kernel virtual memory.
886 Say N here unless you know what you are doing.
888 config LOWMEM_CAM_NUM
890 int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL
893 config DYNAMIC_MEMSTART
894 bool "Enable page aligned dynamic load address for kernel"
895 depends on ADVANCED_OPTIONS && FLATMEM && (FSL_BOOKE || 44x)
896 select NONSTATIC_KERNEL
898 This option enables the kernel to be loaded at any page aligned
899 physical address. The kernel creates a mapping from KERNELBASE to
900 the address where the kernel is loaded. The page size here implies
901 the TLB page size of the mapping for kernel on the particular platform.
902 Please refer to the init code for finding the TLB page size.
904 DYNAMIC_MEMSTART is an easy way of implementing pseudo-RELOCATABLE
905 kernel image, where the only restriction is the page aligned kernel
906 load address. When this option is enabled, the compile time physical
907 address CONFIG_PHYSICAL_START is ignored.
909 This option is overridden by CONFIG_RELOCATABLE
912 bool "Build a relocatable kernel"
913 depends on ADVANCED_OPTIONS && FLATMEM && (44x || FSL_BOOKE)
914 select NONSTATIC_KERNEL
916 This builds a kernel image that is capable of running at the
917 location the kernel is loaded at, without any alignment restrictions.
918 This feature is a superset of DYNAMIC_MEMSTART and hence overrides it.
920 One use is for the kexec on panic case where the recovery kernel
921 must live at a different physical address than the primary
924 Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address
925 it has been loaded at and the compile time physical addresses
926 CONFIG_PHYSICAL_START is ignored. However CONFIG_PHYSICAL_START
927 setting can still be useful to bootwrappers that need to know the
928 load address of the kernel (eg. u-boot/mkimage).
930 config RELOCATABLE_PPC32
932 depends on PPC32 && RELOCATABLE
934 config PAGE_OFFSET_BOOL
935 bool "Set custom page offset address"
936 depends on ADVANCED_OPTIONS
938 This option allows you to set the kernel virtual address at which
939 the kernel will map low memory. This can be useful in optimizing
940 the virtual memory layout of the system.
942 Say N here unless you know what you are doing.
945 hex "Virtual address of memory base" if PAGE_OFFSET_BOOL
948 config KERNEL_START_BOOL
949 bool "Set custom kernel base address"
950 depends on ADVANCED_OPTIONS
952 This option allows you to set the kernel virtual address at which
953 the kernel will be loaded. Normally this should match PAGE_OFFSET
954 however there are times (like kdump) that one might not want them
957 Say N here unless you know what you are doing.
960 hex "Virtual address of kernel base" if KERNEL_START_BOOL
961 default PAGE_OFFSET if PAGE_OFFSET_BOOL
962 default "0xc2000000" if CRASH_DUMP && !NONSTATIC_KERNEL
965 config PHYSICAL_START_BOOL
966 bool "Set physical address where the kernel is loaded"
967 depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE
969 This gives the physical address where the kernel is loaded.
971 Say N here unless you know what you are doing.
973 config PHYSICAL_START
974 hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL
975 default "0x02000000" if PPC_STD_MMU && CRASH_DUMP && !NONSTATIC_KERNEL
978 config PHYSICAL_ALIGN
980 default "0x04000000" if FSL_BOOKE
982 This value puts the alignment restrictions on physical address
983 where kernel is loaded and run from. Kernel is compiled for an
984 address which meets above alignment restriction.
986 config TASK_SIZE_BOOL
987 bool "Set custom user task size"
988 depends on ADVANCED_OPTIONS
990 This option allows you to set the amount of virtual address space
991 allocated to user tasks. This can be useful in optimizing the
992 virtual memory layout of the system.
994 Say N here unless you know what you are doing.
997 hex "Size of user task space" if TASK_SIZE_BOOL
998 default "0x80000000" if PPC_8xx
1001 config CONSISTENT_SIZE_BOOL
1002 bool "Set custom consistent memory pool size"
1003 depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
1005 This option allows you to set the size of the
1006 consistent memory pool. This pool of virtual memory
1007 is used to make consistent memory allocations.
1009 config CONSISTENT_SIZE
1010 hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
1011 default "0x00200000" if NOT_COHERENT_CACHE
1014 bool "Pinned Kernel TLBs (860 ONLY)"
1015 depends on ADVANCED_OPTIONS && 8xx
1020 bool "Build a relocatable kernel"
1021 depends on !COMPILE_TEST
1022 select NONSTATIC_KERNEL
1024 This builds a kernel image that is capable of running anywhere
1025 in the RMA (real memory area) at any 16k-aligned base address.
1026 The kernel is linked as a position-independent executable (PIE)
1027 and contains dynamic relocations which are processed early
1028 in the bootup process.
1030 One use is for the kexec on panic case where the recovery kernel
1031 must live at a different physical address than the primary
1034 # This value must have zeroes in the bottom 60 bits otherwise lots will break
1037 default "0xc000000000000000"
1040 default "0xc000000000000000"
1041 config PHYSICAL_START
1043 default "0x00000000"
1049 source "net/Kconfig"
1051 source "drivers/Kconfig"
1055 source "arch/powerpc/sysdev/qe_lib/Kconfig"
1057 source "lib/Kconfig"
1059 source "arch/powerpc/Kconfig.debug"
1061 source "security/Kconfig"
1065 depends on COMPAT && KEYS
1068 source "crypto/Kconfig"
1070 config PPC_LIB_RHEAP
1073 source "arch/powerpc/kvm/Kconfig"