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
157 select EDAC_ATOMIC_SCRUB
160 def_bool CPU_LITTLE_ENDIAN
173 select COMPAT_BINFMT_ELF
174 select ARCH_WANT_OLD_COMPAT_IPC
175 select COMPAT_OLD_SIGACTION
177 config SYSVIPC_COMPAT
179 depends on COMPAT && SYSVIPC
182 # All PPC32s use generic nvram driver through ppc_md
187 config SCHED_OMIT_FRAME_POINTER
191 config ARCH_MAY_HAVE_PC_FDC
195 config PPC_UDBG_16550
199 config GENERIC_TBSYNC
201 default y if PPC32 && SMP
213 config SYS_SUPPORTS_APM_EMULATION
214 default y if PMAC_APM_EMU
220 Used to allow a board to specify it wants an ePAPR compliant wrapper.
223 config DEFAULT_UIMAGE
226 Used to allow a board to specify it wants a uImage built by default
229 config ARCH_HIBERNATION_POSSIBLE
233 config ARCH_SUSPEND_POSSIBLE
235 depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx || \
236 (PPC_85xx && !PPC_E500MC) || PPC_86xx || PPC_PSERIES \
239 config PPC_DCR_NATIVE
249 depends on PPC_DCR_NATIVE || PPC_DCR_MMIO
252 config PPC_OF_PLATFORM_PCI
255 depends on PPC64 # not supported on 32 bits yet
258 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
259 depends on PPC32 || PPC_STD_MMU_64
262 config ARCH_SUPPORTS_UPROBES
265 config PPC_ADV_DEBUG_REGS
267 depends on 40x || BOOKE
270 config PPC_ADV_DEBUG_IACS
272 depends on PPC_ADV_DEBUG_REGS
276 config PPC_ADV_DEBUG_DACS
278 depends on PPC_ADV_DEBUG_REGS
281 config PPC_ADV_DEBUG_DVCS
283 depends on PPC_ADV_DEBUG_REGS
287 config PPC_ADV_DEBUG_DAC_RANGE
289 depends on PPC_ADV_DEBUG_REGS && 44x
292 config PPC_EMULATE_SSTEP
294 default y if KPROBES || UPROBES || XMON || HAVE_HW_BREAKPOINT
300 config PGTABLE_LEVELS
303 default 3 if PPC_64K_PAGES
306 source "init/Kconfig"
308 source "kernel/Kconfig.freezer"
310 source "arch/powerpc/sysdev/Kconfig"
311 source "arch/powerpc/platforms/Kconfig"
313 menu "Kernel options"
316 bool "High memory support"
319 source kernel/Kconfig.hz
320 source kernel/Kconfig.preempt
321 source "fs/Kconfig.binfmt"
323 config HUGETLB_PAGE_SIZE_VARIABLE
325 depends on HUGETLB_PAGE
328 config MATH_EMULATION
329 bool "Math emulation"
330 depends on 4xx || 8xx || PPC_MPC832x || BOOKE
332 Some PowerPC chips designed for embedded applications do not have
333 a floating-point unit and therefore do not implement the
334 floating-point instructions in the PowerPC instruction set. If you
335 say Y here, the kernel will include code to emulate a floating-point
336 unit, which will allow programs that use floating-point
339 This is also useful to emulate missing (optional) instructions
340 such as fsqrt on cores that do have an FPU but do not implement
341 them (such as Freescale BookE).
344 prompt "Math emulation options"
345 default MATH_EMULATION_FULL
346 depends on MATH_EMULATION
348 config MATH_EMULATION_FULL
349 bool "Emulate all the floating point instructions"
351 Select this option will enable the kernel to support to emulate
352 all the floating point instructions. If your SoC doesn't have
353 a FPU, you should select this.
355 config MATH_EMULATION_HW_UNIMPLEMENTED
356 bool "Just emulate the FPU unimplemented instructions"
358 Select this if you know there does have a hardware FPU on your
359 SoC, but some floating point instructions are not implemented by that.
363 config PPC_TRANSACTIONAL_MEM
364 bool "Transactional Memory support for POWERPC"
365 depends on PPC_BOOK3S_64
371 Support user-mode Transactional Memory on POWERPC.
377 bool "SWIOTLB support"
381 Support for IO bounce buffering for systems without an IOMMU.
382 This allows us to DMA to the full physical address space on
383 platforms where the size of a physical address is larger
384 than the bus address. Not all platforms support this.
387 bool "Support for enabling/disabling CPUs"
388 depends on SMP && (PPC_PSERIES || \
389 PPC_PMAC || PPC_POWERNV || (PPC_85xx && !PPC_E500MC))
391 Say Y here to be able to disable and re-enable individual
392 CPUs at runtime on SMP machines.
394 Say N if you are unsure.
396 config ARCH_CPU_PROBE_RELEASE
398 depends on HOTPLUG_CPU
400 config ARCH_ENABLE_MEMORY_HOTPLUG
403 config ARCH_HAS_WALK_MEMORY
406 config ARCH_ENABLE_MEMORY_HOTREMOVE
409 config PPC64_SUPPORTS_MEMORY_FAILURE
410 bool "Add support for memory hwpoison"
411 depends on PPC_BOOK3S_64
412 default "y" if PPC_POWERNV
413 select ARCH_SUPPORTS_MEMORY_FAILURE
416 bool "kexec system call"
417 depends on (PPC_BOOK3S || FSL_BOOKE || (44x && !SMP))
419 kexec is a system call that implements the ability to shutdown your
420 current kernel, and to start another kernel. It is like a reboot
421 but it is independent of the system firmware. And like a reboot
422 you can start any kernel with it, not just Linux.
424 The name comes from the similarity to the exec system call.
426 It is an ongoing process to be certain the hardware in a machine
427 is properly shutdown, so do not be surprised if this code does not
428 initially work for you. As of this writing the exact hardware
429 interface is strongly in flux, so no good recommendation can be
433 bool "Build a kdump crash kernel"
434 depends on PPC64 || 6xx || FSL_BOOKE || (44x && !SMP)
435 select RELOCATABLE if (PPC64 && !COMPILE_TEST) || 44x || FSL_BOOKE
437 Build a kernel suitable for use as a kdump capture kernel.
438 The same kernel binary can be used as production kernel and dump
442 bool "Firmware-assisted dump"
443 depends on PPC64 && PPC_RTAS && CRASH_DUMP && KEXEC
445 A robust mechanism to get reliable kernel crash dump with
446 assistance from firmware. This approach does not use kexec,
447 instead firmware assists in booting the kdump kernel
448 while preserving memory contents. Firmware-assisted dump
449 is meant to be a kdump replacement offering robustness and
450 speed not possible without system firmware assistance.
455 bool "Distribute interrupts on all CPUs by default"
458 This option gives the kernel permission to distribute IRQs across
459 multiple CPUs. Saying N here will route all IRQs to the first
460 CPU. Generally saying Y is safe, although some problems have been
461 reported with SMP Power Macintoshes with this option enabled.
466 default y if SMP && PPC_PSERIES
472 depends on NEED_MULTIPLE_NODES
474 config USE_PERCPU_NUMA_NODE_ID
478 config HAVE_MEMORYLESS_NODES
482 config ARCH_SELECT_MEMORY_MODEL
486 config ARCH_FLATMEM_ENABLE
488 depends on (PPC64 && !NUMA) || PPC32
490 config ARCH_SPARSEMEM_ENABLE
493 select SPARSEMEM_VMEMMAP_ENABLE
495 config ARCH_SPARSEMEM_DEFAULT
497 depends on (SMP && PPC_PSERIES) || PPC_PS3
499 config SYS_SUPPORTS_HUGETLBFS
504 config ARCH_MEMORY_PROBE
506 depends on MEMORY_HOTPLUG
508 # Some NUMA nodes have memory ranges that span
509 # other nodes. Even though a pfn is valid and
510 # between a node's start and end pfns, it may not
511 # reside on that node. See memmap_init_zone()
513 config NODES_SPAN_OTHER_NODES
515 depends on NEED_MULTIPLE_NODES
517 config PPC_HAS_HASH_64K
523 bool "Using standard binutils settings"
527 Turning this option off allows you to select 256KB PAGE_SIZE on 44x.
528 Note, that kernel will be able to run only those applications,
529 which had been compiled using binutils later than 2.17.50.0.3 with
530 '-zmax-page-size' set to 256K (the default is 64K). Or, if using
531 the older binutils, you can patch them with a trivial patch, which
532 changes the ELF_MAXPAGESIZE definition from 0x10000 to 0x40000.
538 Select the kernel logical page size. Increasing the page size
539 will reduce software overhead at each page boundary, allow
540 hardware prefetch mechanisms to be more effective, and allow
541 larger dma transfers increasing IO efficiency and reducing
542 overhead. However the utilization of memory will increase.
543 For example, each cached file will using a multiple of the
544 page size to hold its contents and the difference between the
545 end of file and the end of page is wasted.
547 Some dedicated systems, such as software raid serving with
548 accelerated calculations, have shown significant increases.
550 If you configure a 64 bit kernel for 64k pages but the
551 processor does not support them, then the kernel will simulate
552 them with 4k pages, loading them on demand, but with the
553 reduced software overhead and larger internal fragmentation.
554 For the 32 bit kernel, a large page option will not be offered
555 unless it is supported by the configured processor.
557 If unsure, choose 4K_PAGES.
563 bool "16k page size" if 44x || PPC_8xx
566 bool "64k page size" if 44x || PPC_STD_MMU_64 || PPC_BOOK3E_64
567 depends on !PPC_FSL_BOOK3E
568 select PPC_HAS_HASH_64K if PPC_STD_MMU_64
570 config PPC_256K_PAGES
571 bool "256k page size" if 44x
572 depends on !STDBINUTILS
574 Make the page size 256k.
576 As the ELF standard only requires alignment to support page
577 sizes up to 64k, you will need to compile all of your user
578 space applications with a non-standard binutils settings
579 (see the STDBINUTILS description for details).
581 Say N unless you know what you are doing.
585 config FORCE_MAX_ZONEORDER
586 int "Maximum zone order"
587 range 9 64 if PPC64 && PPC_64K_PAGES
588 default "9" if PPC64 && PPC_64K_PAGES
589 range 13 64 if PPC64 && !PPC_64K_PAGES
590 default "13" if PPC64 && !PPC_64K_PAGES
591 range 9 64 if PPC32 && PPC_16K_PAGES
592 default "9" if PPC32 && PPC_16K_PAGES
593 range 7 64 if PPC32 && PPC_64K_PAGES
594 default "7" if PPC32 && PPC_64K_PAGES
595 range 5 64 if PPC32 && PPC_256K_PAGES
596 default "5" if PPC32 && PPC_256K_PAGES
600 The kernel memory allocator divides physically contiguous memory
601 blocks into "zones", where each zone is a power of two number of
602 pages. This option selects the largest power of two that the kernel
603 keeps in the memory allocator. If you need to allocate very large
604 blocks of physically contiguous memory, then you may need to
607 This config option is actually maximum order plus one. For example,
608 a value of 11 means that the largest free memory block is 2^10 pages.
610 The page size is not necessarily 4KB. For example, on 64-bit
611 systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES. Keep
612 this in mind when choosing a value for this option.
614 config PPC_SUBPAGE_PROT
615 bool "Support setting protections for 4k subpages"
616 depends on PPC_STD_MMU_64 && PPC_64K_PAGES
618 This option adds support for a system call to allow user programs
619 to set access permissions (read/write, readonly, or no access)
620 on the 4k subpages of each 64k page.
622 config PPC_COPRO_BASE
627 bool "SMT (Hyperthreading) scheduler support"
628 depends on PPC64 && SMP
630 SMT scheduler support improves the CPU scheduler's decision making
631 when dealing with POWER5 cpus at a cost of slightly increased
632 overhead in some places. If unsure say N here.
634 config PPC_DENORMALISATION
635 bool "PowerPC denormalisation exception handling"
636 depends on PPC_BOOK3S_64
637 default "y" if PPC_POWERNV
639 Add support for handling denormalisation of single precision
640 values. Useful for bare metal only. If unsure say Y here.
643 bool "Default bootloader kernel arguments"
646 string "Initial kernel command string"
647 depends on CMDLINE_BOOL
648 default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
650 On some platforms, there is currently no way for the boot loader to
651 pass arguments to the kernel. For these platforms, you can supply
652 some command-line options at build time by entering them here. In
653 most cases you will need to specify the root device here.
656 bool "Always use the default kernel command string"
657 depends on CMDLINE_BOOL
659 Always use the default kernel command string, even if the boot
660 loader passes other arguments to the kernel.
661 This is useful if you cannot or don't want to change the
662 command-line options your boot loader passes to the kernel.
665 string "Additional default image types"
667 List additional targets to be built by the bootwrapper here (separated
668 by spaces). This is useful for targets that depend of device tree
669 files in the .dts directory.
671 Targets in this list will be build as part of the default build
672 target, or when the user does a 'make zImage' or a
673 'make zImage.initrd'.
675 If unsure, leave blank
677 config ARCH_WANTS_FREEZER_CONTROL
681 source kernel/power/Kconfig
684 bool "Enable seccomp to safely compute untrusted bytecode"
688 This kernel feature is useful for number crunching applications
689 that may need to compute untrusted bytecode during their
690 execution. By using pipes or other transports made available to
691 the process as file descriptors supporting the read/write
692 syscalls, it's possible to isolate those applications in
693 their own address space using seccomp. Once seccomp is
694 enabled via /proc/<pid>/seccomp, it cannot be disabled
695 and the task is only allowed to execute a few safe syscalls
696 defined by each seccomp mode.
698 If unsure, say Y. Only embedded should say N here.
709 bool "Support for ISA-bus hardware"
713 Find out whether you have ISA slots on your motherboard. ISA is the
714 name of a bus system, i.e. the way the CPU talks to the other stuff
715 inside your box. If you have an Apple machine, say N here; if you
716 have an IBM RS/6000 or pSeries machine, say Y. If you have an
717 embedded board, consult your board documentation.
723 config NEED_DMA_MAP_STATE
724 def_bool (PPC64 || NOT_COHERENT_CACHE)
726 config NEED_SG_DMA_LENGTH
729 config GENERIC_ISA_DMA
731 depends on ISA_DMA_API
734 config PPC_INDIRECT_PCI
737 default y if 40x || 44x
751 select PPC_INDIRECT_PCI
757 depends on SUSPEND && (PPC_85xx || PPC_86xx)
759 Freescale MPC85xx/MPC86xx power management controller support
760 (suspend/resume). For MPC83xx see platforms/83xx/suspend.c
765 depends on SUSPEND && (44x || 40x)
767 PPC4xx Clock Power Management (CPM) support (suspend/resume).
768 It also enables support for two different idle states (idle-wait
775 bool "Freescale Local Bus support"
778 Enables reporting of errors from the Freescale local bus
779 controller. Also contains some common code used by
780 drivers for specific local bus peripherals.
784 depends on PPC_83xx || QUICC_ENGINE || CPM2
786 Freescale General-purpose Timers support
788 # Yes MCA RS/6000s exist but Linux-PPC does not currently support any
792 # Platforms that what PCI turned unconditionally just do select PCI
793 # in their config node. Platforms that want to choose at config
794 # time should select PPC_PCI_CHOICE
795 config PPC_PCI_CHOICE
799 bool "PCI support" if PPC_PCI_CHOICE
800 default y if !40x && !CPM2 && !8xx && !PPC_83xx \
801 && !PPC_85xx && !PPC_86xx && !GAMECUBE_COMMON
802 default PCI_QSPAN if !4xx && !CPM2 && 8xx
803 select GENERIC_PCI_IOMAP
805 Find out whether your system includes a PCI bus. PCI is the name of
806 a bus system, i.e. the way the CPU talks to the other stuff inside
807 your box. If you say Y here, the kernel will include drivers and
808 infrastructure code to support PCI bus devices.
818 depends on !4xx && !CPM2 && 8xx
821 Say Y here if you have a system based on a Motorola 8xx-series
822 embedded processor with a QSPAN PCI interface, otherwise say N.
826 depends on PCI && 8260
827 select PPC_INDIRECT_PCI
830 source "drivers/pci/pcie/Kconfig"
832 source "drivers/pci/Kconfig"
834 source "drivers/pcmcia/Kconfig"
836 source "drivers/pci/hotplug/Kconfig"
843 tristate "RapidIO support"
844 depends on HAS_RAPIDIO || PCI
846 If you say Y here, the kernel will include drivers and
847 infrastructure code to support RapidIO interconnect devices.
850 bool "Freescale Embedded SRIO Controller support"
851 depends on RAPIDIO = y && HAS_RAPIDIO
854 Include support for RapidIO controller on Freescale embedded
855 processors (MPC8548, MPC8641, etc).
857 source "drivers/rapidio/Kconfig"
861 config NONSTATIC_KERNEL
865 menu "Advanced setup"
868 config ADVANCED_OPTIONS
869 bool "Prompt for advanced kernel configuration options"
871 This option will enable prompting for a variety of advanced kernel
872 configuration options. These options can cause the kernel to not
873 work if they are set incorrectly, but can be used to optimize certain
874 aspects of kernel memory management.
876 Unless you know what you are doing, say N here.
878 comment "Default settings for advanced configuration options are used"
879 depends on !ADVANCED_OPTIONS
881 config LOWMEM_SIZE_BOOL
882 bool "Set maximum low memory"
883 depends on ADVANCED_OPTIONS
885 This option allows you to set the maximum amount of memory which
886 will be used as "low memory", that is, memory which the kernel can
887 access directly, without having to set up a kernel virtual mapping.
888 This can be useful in optimizing the layout of kernel virtual
891 Say N here unless you know what you are doing.
894 hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
897 config LOWMEM_CAM_NUM_BOOL
898 bool "Set number of CAMs to use to map low memory"
899 depends on ADVANCED_OPTIONS && FSL_BOOKE
901 This option allows you to set the maximum number of CAM slots that
902 will be used to map low memory. There are a limited number of slots
903 available and even more limited number that will fit in the L1 MMU.
904 However, using more entries will allow mapping more low memory. This
905 can be useful in optimizing the layout of kernel virtual memory.
907 Say N here unless you know what you are doing.
909 config LOWMEM_CAM_NUM
911 int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL
914 config DYNAMIC_MEMSTART
915 bool "Enable page aligned dynamic load address for kernel"
916 depends on ADVANCED_OPTIONS && FLATMEM && (FSL_BOOKE || 44x)
917 select NONSTATIC_KERNEL
919 This option enables the kernel to be loaded at any page aligned
920 physical address. The kernel creates a mapping from KERNELBASE to
921 the address where the kernel is loaded. The page size here implies
922 the TLB page size of the mapping for kernel on the particular platform.
923 Please refer to the init code for finding the TLB page size.
925 DYNAMIC_MEMSTART is an easy way of implementing pseudo-RELOCATABLE
926 kernel image, where the only restriction is the page aligned kernel
927 load address. When this option is enabled, the compile time physical
928 address CONFIG_PHYSICAL_START is ignored.
930 This option is overridden by CONFIG_RELOCATABLE
933 bool "Build a relocatable kernel"
934 depends on ADVANCED_OPTIONS && FLATMEM && (44x || FSL_BOOKE)
935 select NONSTATIC_KERNEL
937 This builds a kernel image that is capable of running at the
938 location the kernel is loaded at, without any alignment restrictions.
939 This feature is a superset of DYNAMIC_MEMSTART and hence overrides it.
941 One use is for the kexec on panic case where the recovery kernel
942 must live at a different physical address than the primary
945 Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address
946 it has been loaded at and the compile time physical addresses
947 CONFIG_PHYSICAL_START is ignored. However CONFIG_PHYSICAL_START
948 setting can still be useful to bootwrappers that need to know the
949 load address of the kernel (eg. u-boot/mkimage).
951 config RELOCATABLE_PPC32
953 depends on PPC32 && RELOCATABLE
955 config PAGE_OFFSET_BOOL
956 bool "Set custom page offset address"
957 depends on ADVANCED_OPTIONS
959 This option allows you to set the kernel virtual address at which
960 the kernel will map low memory. This can be useful in optimizing
961 the virtual memory layout of the system.
963 Say N here unless you know what you are doing.
966 hex "Virtual address of memory base" if PAGE_OFFSET_BOOL
969 config KERNEL_START_BOOL
970 bool "Set custom kernel base address"
971 depends on ADVANCED_OPTIONS
973 This option allows you to set the kernel virtual address at which
974 the kernel will be loaded. Normally this should match PAGE_OFFSET
975 however there are times (like kdump) that one might not want them
978 Say N here unless you know what you are doing.
981 hex "Virtual address of kernel base" if KERNEL_START_BOOL
982 default PAGE_OFFSET if PAGE_OFFSET_BOOL
983 default "0xc2000000" if CRASH_DUMP && !NONSTATIC_KERNEL
986 config PHYSICAL_START_BOOL
987 bool "Set physical address where the kernel is loaded"
988 depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE
990 This gives the physical address where the kernel is loaded.
992 Say N here unless you know what you are doing.
994 config PHYSICAL_START
995 hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL
996 default "0x02000000" if PPC_STD_MMU && CRASH_DUMP && !NONSTATIC_KERNEL
999 config PHYSICAL_ALIGN
1001 default "0x04000000" if FSL_BOOKE
1003 This value puts the alignment restrictions on physical address
1004 where kernel is loaded and run from. Kernel is compiled for an
1005 address which meets above alignment restriction.
1007 config TASK_SIZE_BOOL
1008 bool "Set custom user task size"
1009 depends on ADVANCED_OPTIONS
1011 This option allows you to set the amount of virtual address space
1012 allocated to user tasks. This can be useful in optimizing the
1013 virtual memory layout of the system.
1015 Say N here unless you know what you are doing.
1018 hex "Size of user task space" if TASK_SIZE_BOOL
1019 default "0x80000000" if PPC_8xx
1020 default "0xc0000000"
1022 config CONSISTENT_SIZE_BOOL
1023 bool "Set custom consistent memory pool size"
1024 depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
1026 This option allows you to set the size of the
1027 consistent memory pool. This pool of virtual memory
1028 is used to make consistent memory allocations.
1030 config CONSISTENT_SIZE
1031 hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
1032 default "0x00200000" if NOT_COHERENT_CACHE
1035 bool "Pinned Kernel TLBs (860 ONLY)"
1036 depends on ADVANCED_OPTIONS && 8xx
1041 bool "Build a relocatable kernel"
1042 depends on !COMPILE_TEST
1043 select NONSTATIC_KERNEL
1045 This builds a kernel image that is capable of running anywhere
1046 in the RMA (real memory area) at any 16k-aligned base address.
1047 The kernel is linked as a position-independent executable (PIE)
1048 and contains dynamic relocations which are processed early
1049 in the bootup process.
1051 One use is for the kexec on panic case where the recovery kernel
1052 must live at a different physical address than the primary
1055 # This value must have zeroes in the bottom 60 bits otherwise lots will break
1058 default "0xc000000000000000"
1061 default "0xc000000000000000"
1062 config PHYSICAL_START
1064 default "0x00000000"
1070 source "net/Kconfig"
1072 source "drivers/Kconfig"
1076 source "arch/powerpc/sysdev/qe_lib/Kconfig"
1078 source "lib/Kconfig"
1080 source "arch/powerpc/Kconfig.debug"
1082 source "security/Kconfig"
1086 depends on COMPAT && KEYS
1089 source "crypto/Kconfig"
1091 config PPC_LIB_RHEAP
1094 source "arch/powerpc/kvm/Kconfig"