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 HAVE_FTRACE_MCOUNT_RECORD
94 select HAVE_DYNAMIC_FTRACE
95 select HAVE_FUNCTION_TRACER
96 select HAVE_FUNCTION_GRAPH_TRACER
97 select SYSCTL_EXCEPTION_TRACE
98 select ARCH_WANT_OPTIONAL_GPIOLIB
99 select VIRT_TO_BUS if !PPC64
101 select HAVE_IOREMAP_PROT
102 select HAVE_EFFICIENT_UNALIGNED_ACCESS if !CPU_LITTLE_ENDIAN
104 select HAVE_ARCH_KGDB
105 select HAVE_KRETPROBES
106 select HAVE_ARCH_TRACEHOOK
108 select HAVE_MEMBLOCK_NODE_MAP
109 select HAVE_DMA_ATTRS
110 select HAVE_DMA_API_DEBUG
112 select HAVE_DEBUG_KMEMLEAK
113 select GENERIC_ATOMIC64 if PPC32
114 select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
115 select HAVE_PERF_EVENTS
116 select HAVE_REGS_AND_STACK_ACCESS_API
117 select HAVE_HW_BREAKPOINT if PERF_EVENTS && PPC_BOOK3S_64
118 select ARCH_WANT_IPC_PARSE_VERSION
121 select GENERIC_IRQ_SHOW
122 select GENERIC_IRQ_SHOW_LEVEL
123 select IRQ_FORCED_THREADING
124 select HAVE_RCU_TABLE_FREE if SMP
125 select HAVE_SYSCALL_TRACEPOINTS
126 select HAVE_BPF_JIT if PPC64
127 select HAVE_ARCH_JUMP_LABEL
128 select ARCH_HAVE_NMI_SAFE_CMPXCHG
129 select GENERIC_SMP_IDLE_THREAD
130 select GENERIC_CMOS_UPDATE
131 select GENERIC_TIME_VSYSCALL_OLD
132 select GENERIC_CLOCKEVENTS
133 select GENERIC_STRNCPY_FROM_USER
134 select GENERIC_STRNLEN_USER
135 select HAVE_MOD_ARCH_SPECIFIC
136 select MODULES_USE_ELF_RELA
137 select CLONE_BACKWARDS
138 select ARCH_USE_BUILTIN_BSWAP
139 select OLD_SIGSUSPEND
140 select OLD_SIGACTION if PPC32
141 select HAVE_DEBUG_STACKOVERFLOW
142 select HAVE_IRQ_EXIT_ON_IRQ_STACK
145 def_bool CPU_LITTLE_ENDIAN
158 select COMPAT_BINFMT_ELF
159 select ARCH_WANT_OLD_COMPAT_IPC
160 select COMPAT_OLD_SIGACTION
162 config SYSVIPC_COMPAT
164 depends on COMPAT && SYSVIPC
167 # All PPC32s use generic nvram driver through ppc_md
172 config SCHED_OMIT_FRAME_POINTER
176 config ARCH_MAY_HAVE_PC_FDC
178 default !PPC_PSERIES || PCI
183 config PPC_UDBG_16550
187 config GENERIC_TBSYNC
189 default y if PPC32 && SMP
201 config SYS_SUPPORTS_APM_EMULATION
202 default y if PMAC_APM_EMU
208 Used to allow a board to specify it wants an ePAPR compliant wrapper.
211 config DEFAULT_UIMAGE
214 Used to allow a board to specify it wants a uImage built by default
220 config ARCH_HIBERNATION_POSSIBLE
224 config ARCH_SUSPEND_POSSIBLE
226 depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx || \
227 (PPC_85xx && !PPC_E500MC) || PPC_86xx || PPC_PSERIES \
230 config PPC_DCR_NATIVE
240 depends on PPC_DCR_NATIVE || PPC_DCR_MMIO
243 config PPC_OF_PLATFORM_PCI
246 depends on PPC64 # not supported on 32 bits yet
249 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
252 config ARCH_SUPPORTS_UPROBES
255 config PPC_ADV_DEBUG_REGS
257 depends on 40x || BOOKE
260 config PPC_ADV_DEBUG_IACS
262 depends on PPC_ADV_DEBUG_REGS
266 config PPC_ADV_DEBUG_DACS
268 depends on PPC_ADV_DEBUG_REGS
271 config PPC_ADV_DEBUG_DVCS
273 depends on PPC_ADV_DEBUG_REGS
277 config PPC_ADV_DEBUG_DAC_RANGE
279 depends on PPC_ADV_DEBUG_REGS && 44x
282 config PPC_EMULATE_SSTEP
284 default y if KPROBES || UPROBES || XMON || HAVE_HW_BREAKPOINT
286 source "init/Kconfig"
288 source "kernel/Kconfig.freezer"
290 source "arch/powerpc/sysdev/Kconfig"
291 source "arch/powerpc/platforms/Kconfig"
293 menu "Kernel options"
296 bool "High memory support"
299 source kernel/Kconfig.hz
300 source kernel/Kconfig.preempt
301 source "fs/Kconfig.binfmt"
303 config HUGETLB_PAGE_SIZE_VARIABLE
305 depends on HUGETLB_PAGE
308 config MATH_EMULATION
309 bool "Math emulation"
310 depends on 4xx || 8xx || PPC_MPC832x || BOOKE
312 Some PowerPC chips designed for embedded applications do not have
313 a floating-point unit and therefore do not implement the
314 floating-point instructions in the PowerPC instruction set. If you
315 say Y here, the kernel will include code to emulate a floating-point
316 unit, which will allow programs that use floating-point
319 This is also useful to emulate missing (optional) instructions
320 such as fsqrt on cores that do have an FPU but do not implement
321 them (such as Freescale BookE).
324 prompt "Math emulation options"
325 default MATH_EMULATION_FULL
326 depends on MATH_EMULATION
328 config MATH_EMULATION_FULL
329 bool "Emulate all the floating point instructions"
331 Select this option will enable the kernel to support to emulate
332 all the floating point instructions. If your SoC doesn't have
333 a FPU, you should select this.
335 config MATH_EMULATION_HW_UNIMPLEMENTED
336 bool "Just emulate the FPU unimplemented instructions"
338 Select this if you know there does have a hardware FPU on your
339 SoC, but some floating point instructions are not implemented by that.
343 config PPC_TRANSACTIONAL_MEM
344 bool "Transactional Memory support for POWERPC"
345 depends on PPC_BOOK3S_64
349 Support user-mode Transactional Memory on POWERPC.
355 bool "SWIOTLB support"
359 Support for IO bounce buffering for systems without an IOMMU.
360 This allows us to DMA to the full physical address space on
361 platforms where the size of a physical address is larger
362 than the bus address. Not all platforms support this.
365 bool "Support for enabling/disabling CPUs"
366 depends on SMP && (PPC_PSERIES || \
367 PPC_PMAC || PPC_POWERNV || (PPC_85xx && !PPC_E500MC))
369 Say Y here to be able to disable and re-enable individual
370 CPUs at runtime on SMP machines.
372 Say N if you are unsure.
374 config ARCH_CPU_PROBE_RELEASE
376 depends on HOTPLUG_CPU
378 config ARCH_ENABLE_MEMORY_HOTPLUG
381 config ARCH_HAS_WALK_MEMORY
384 config ARCH_ENABLE_MEMORY_HOTREMOVE
388 bool "kexec system call"
389 depends on (PPC_BOOK3S || FSL_BOOKE || (44x && !SMP))
391 kexec is a system call that implements the ability to shutdown your
392 current kernel, and to start another kernel. It is like a reboot
393 but it is independent of the system firmware. And like a reboot
394 you can start any kernel with it, not just Linux.
396 The name comes from the similarity to the exec system call.
398 It is an ongoing process to be certain the hardware in a machine
399 is properly shutdown, so do not be surprised if this code does not
400 initially work for you. As of this writing the exact hardware
401 interface is strongly in flux, so no good recommendation can be
405 bool "Build a kdump crash kernel"
406 depends on PPC64 || 6xx || FSL_BOOKE || (44x && !SMP)
407 select RELOCATABLE if PPC64 || 44x
408 select DYNAMIC_MEMSTART if FSL_BOOKE
410 Build a kernel suitable for use as a kdump capture kernel.
411 The same kernel binary can be used as production kernel and dump
415 bool "Firmware-assisted dump"
416 depends on PPC64 && PPC_RTAS && CRASH_DUMP && KEXEC
418 A robust mechanism to get reliable kernel crash dump with
419 assistance from firmware. This approach does not use kexec,
420 instead firmware assists in booting the kdump kernel
421 while preserving memory contents. Firmware-assisted dump
422 is meant to be a kdump replacement offering robustness and
423 speed not possible without system firmware assistance.
428 bool "Distribute interrupts on all CPUs by default"
431 This option gives the kernel permission to distribute IRQs across
432 multiple CPUs. Saying N here will route all IRQs to the first
433 CPU. Generally saying Y is safe, although some problems have been
434 reported with SMP Power Macintoshes with this option enabled.
439 default y if SMP && PPC_PSERIES
445 depends on NEED_MULTIPLE_NODES
447 config ARCH_SELECT_MEMORY_MODEL
451 config ARCH_FLATMEM_ENABLE
453 depends on (PPC64 && !NUMA) || PPC32
455 config ARCH_SPARSEMEM_ENABLE
458 select SPARSEMEM_VMEMMAP_ENABLE
460 config ARCH_SPARSEMEM_DEFAULT
462 depends on (SMP && PPC_PSERIES) || PPC_PS3
464 config SYS_SUPPORTS_HUGETLBFS
469 config ARCH_MEMORY_PROBE
471 depends on MEMORY_HOTPLUG
473 # Some NUMA nodes have memory ranges that span
474 # other nodes. Even though a pfn is valid and
475 # between a node's start and end pfns, it may not
476 # reside on that node. See memmap_init_zone()
478 config NODES_SPAN_OTHER_NODES
480 depends on NEED_MULTIPLE_NODES
482 config PPC_HAS_HASH_64K
488 bool "Using standard binutils settings"
492 Turning this option off allows you to select 256KB PAGE_SIZE on 44x.
493 Note, that kernel will be able to run only those applications,
494 which had been compiled using binutils later than 2.17.50.0.3 with
495 '-zmax-page-size' set to 256K (the default is 64K). Or, if using
496 the older binutils, you can patch them with a trivial patch, which
497 changes the ELF_MAXPAGESIZE definition from 0x10000 to 0x40000.
503 Select the kernel logical page size. Increasing the page size
504 will reduce software overhead at each page boundary, allow
505 hardware prefetch mechanisms to be more effective, and allow
506 larger dma transfers increasing IO efficiency and reducing
507 overhead. However the utilization of memory will increase.
508 For example, each cached file will using a multiple of the
509 page size to hold its contents and the difference between the
510 end of file and the end of page is wasted.
512 Some dedicated systems, such as software raid serving with
513 accelerated calculations, have shown significant increases.
515 If you configure a 64 bit kernel for 64k pages but the
516 processor does not support them, then the kernel will simulate
517 them with 4k pages, loading them on demand, but with the
518 reduced software overhead and larger internal fragmentation.
519 For the 32 bit kernel, a large page option will not be offered
520 unless it is supported by the configured processor.
522 If unsure, choose 4K_PAGES.
528 bool "16k page size" if 44x
531 bool "64k page size" if 44x || PPC_STD_MMU_64 || PPC_BOOK3E_64
532 select PPC_HAS_HASH_64K if PPC_STD_MMU_64
534 config PPC_256K_PAGES
535 bool "256k page size" if 44x
536 depends on !STDBINUTILS
538 Make the page size 256k.
540 As the ELF standard only requires alignment to support page
541 sizes up to 64k, you will need to compile all of your user
542 space applications with a non-standard binutils settings
543 (see the STDBINUTILS description for details).
545 Say N unless you know what you are doing.
549 config FORCE_MAX_ZONEORDER
550 int "Maximum zone order"
551 range 9 64 if PPC64 && PPC_64K_PAGES
552 default "9" if PPC64 && PPC_64K_PAGES
553 range 13 64 if PPC64 && !PPC_64K_PAGES
554 default "13" if PPC64 && !PPC_64K_PAGES
555 range 9 64 if PPC32 && PPC_16K_PAGES
556 default "9" if PPC32 && PPC_16K_PAGES
557 range 7 64 if PPC32 && PPC_64K_PAGES
558 default "7" if PPC32 && PPC_64K_PAGES
559 range 5 64 if PPC32 && PPC_256K_PAGES
560 default "5" if PPC32 && PPC_256K_PAGES
564 The kernel memory allocator divides physically contiguous memory
565 blocks into "zones", where each zone is a power of two number of
566 pages. This option selects the largest power of two that the kernel
567 keeps in the memory allocator. If you need to allocate very large
568 blocks of physically contiguous memory, then you may need to
571 This config option is actually maximum order plus one. For example,
572 a value of 11 means that the largest free memory block is 2^10 pages.
574 The page size is not necessarily 4KB. For example, on 64-bit
575 systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES. Keep
576 this in mind when choosing a value for this option.
578 config PPC_SUBPAGE_PROT
579 bool "Support setting protections for 4k subpages"
580 depends on PPC_STD_MMU_64 && PPC_64K_PAGES
582 This option adds support for a system call to allow user programs
583 to set access permissions (read/write, readonly, or no access)
584 on the 4k subpages of each 64k page.
587 bool "SMT (Hyperthreading) scheduler support"
588 depends on PPC64 && SMP
590 SMT scheduler support improves the CPU scheduler's decision making
591 when dealing with POWER5 cpus at a cost of slightly increased
592 overhead in some places. If unsure say N here.
594 config PPC_DENORMALISATION
595 bool "PowerPC denormalisation exception handling"
596 depends on PPC_BOOK3S_64
597 default "y" if PPC_POWERNV
599 Add support for handling denormalisation of single precision
600 values. Useful for bare metal only. If unsure say Y here.
603 bool "Default bootloader kernel arguments"
606 string "Initial kernel command string"
607 depends on CMDLINE_BOOL
608 default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
610 On some platforms, there is currently no way for the boot loader to
611 pass arguments to the kernel. For these platforms, you can supply
612 some command-line options at build time by entering them here. In
613 most cases you will need to specify the root device here.
616 string "Additional default image types"
618 List additional targets to be built by the bootwrapper here (separated
619 by spaces). This is useful for targets that depend of device tree
620 files in the .dts directory.
622 Targets in this list will be build as part of the default build
623 target, or when the user does a 'make zImage' or a
624 'make zImage.initrd'.
626 If unsure, leave blank
628 config ARCH_WANTS_FREEZER_CONTROL
632 source kernel/power/Kconfig
635 bool "Enable seccomp to safely compute untrusted bytecode"
639 This kernel feature is useful for number crunching applications
640 that may need to compute untrusted bytecode during their
641 execution. By using pipes or other transports made available to
642 the process as file descriptors supporting the read/write
643 syscalls, it's possible to isolate those applications in
644 their own address space using seccomp. Once seccomp is
645 enabled via /proc/<pid>/seccomp, it cannot be disabled
646 and the task is only allowed to execute a few safe syscalls
647 defined by each seccomp mode.
649 If unsure, say Y. Only embedded should say N here.
660 bool "Support for ISA-bus hardware"
664 Find out whether you have ISA slots on your motherboard. ISA is the
665 name of a bus system, i.e. the way the CPU talks to the other stuff
666 inside your box. If you have an Apple machine, say N here; if you
667 have an IBM RS/6000 or pSeries machine, say Y. If you have an
668 embedded board, consult your board documentation.
674 config NEED_DMA_MAP_STATE
675 def_bool (PPC64 || NOT_COHERENT_CACHE)
677 config NEED_SG_DMA_LENGTH
680 config GENERIC_ISA_DMA
682 depends on ISA_DMA_API
685 config PPC_INDIRECT_PCI
688 default y if 40x || 44x
702 select PPC_INDIRECT_PCI
708 depends on SUSPEND && (PPC_85xx || PPC_86xx)
710 Freescale MPC85xx/MPC86xx power management controller support
711 (suspend/resume). For MPC83xx see platforms/83xx/suspend.c
716 depends on SUSPEND && (44x || 40x)
718 PPC4xx Clock Power Management (CPM) support (suspend/resume).
719 It also enables support for two different idle states (idle-wait
726 bool "Freescale Local Bus support"
729 Enables reporting of errors from the Freescale local bus
730 controller. Also contains some common code used by
731 drivers for specific local bus peripherals.
739 depends on PPC_83xx || QUICC_ENGINE || CPM2
741 Freescale General-purpose Timers support
743 # Yes MCA RS/6000s exist but Linux-PPC does not currently support any
747 # Platforms that what PCI turned unconditionally just do select PCI
748 # in their config node. Platforms that want to choose at config
749 # time should select PPC_PCI_CHOICE
750 config PPC_PCI_CHOICE
754 bool "PCI support" if PPC_PCI_CHOICE
755 default y if !40x && !CPM2 && !8xx && !PPC_83xx \
756 && !PPC_85xx && !PPC_86xx && !GAMECUBE_COMMON
757 default PCI_QSPAN if !4xx && !CPM2 && 8xx
758 select GENERIC_PCI_IOMAP
760 Find out whether your system includes a PCI bus. PCI is the name of
761 a bus system, i.e. the way the CPU talks to the other stuff inside
762 your box. If you say Y here, the kernel will include drivers and
763 infrastructure code to support PCI bus devices.
773 depends on !4xx && !CPM2 && 8xx
776 Say Y here if you have a system based on a Motorola 8xx-series
777 embedded processor with a QSPAN PCI interface, otherwise say N.
781 depends on PCI && 8260
782 select PPC_INDIRECT_PCI
785 source "drivers/pci/pcie/Kconfig"
787 source "drivers/pci/Kconfig"
789 source "drivers/pcmcia/Kconfig"
791 source "drivers/pci/hotplug/Kconfig"
798 tristate "RapidIO support"
799 depends on HAS_RAPIDIO || PCI
801 If you say Y here, the kernel will include drivers and
802 infrastructure code to support RapidIO interconnect devices.
805 bool "Freescale Embedded SRIO Controller support"
806 depends on RAPIDIO = y && HAS_RAPIDIO
809 Include support for RapidIO controller on Freescale embedded
810 processors (MPC8548, MPC8641, etc).
812 source "drivers/rapidio/Kconfig"
816 config NONSTATIC_KERNEL
820 menu "Advanced setup"
823 config ADVANCED_OPTIONS
824 bool "Prompt for advanced kernel configuration options"
826 This option will enable prompting for a variety of advanced kernel
827 configuration options. These options can cause the kernel to not
828 work if they are set incorrectly, but can be used to optimize certain
829 aspects of kernel memory management.
831 Unless you know what you are doing, say N here.
833 comment "Default settings for advanced configuration options are used"
834 depends on !ADVANCED_OPTIONS
836 config LOWMEM_SIZE_BOOL
837 bool "Set maximum low memory"
838 depends on ADVANCED_OPTIONS
840 This option allows you to set the maximum amount of memory which
841 will be used as "low memory", that is, memory which the kernel can
842 access directly, without having to set up a kernel virtual mapping.
843 This can be useful in optimizing the layout of kernel virtual
846 Say N here unless you know what you are doing.
849 hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
852 config LOWMEM_CAM_NUM_BOOL
853 bool "Set number of CAMs to use to map low memory"
854 depends on ADVANCED_OPTIONS && FSL_BOOKE
856 This option allows you to set the maximum number of CAM slots that
857 will be used to map low memory. There are a limited number of slots
858 available and even more limited number that will fit in the L1 MMU.
859 However, using more entries will allow mapping more low memory. This
860 can be useful in optimizing the layout of kernel virtual memory.
862 Say N here unless you know what you are doing.
864 config LOWMEM_CAM_NUM
866 int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL
869 config DYNAMIC_MEMSTART
870 bool "Enable page aligned dynamic load address for kernel"
871 depends on ADVANCED_OPTIONS && FLATMEM && (FSL_BOOKE || 44x)
872 select NONSTATIC_KERNEL
874 This option enables the kernel to be loaded at any page aligned
875 physical address. The kernel creates a mapping from KERNELBASE to
876 the address where the kernel is loaded. The page size here implies
877 the TLB page size of the mapping for kernel on the particular platform.
878 Please refer to the init code for finding the TLB page size.
880 DYNAMIC_MEMSTART is an easy way of implementing pseudo-RELOCATABLE
881 kernel image, where the only restriction is the page aligned kernel
882 load address. When this option is enabled, the compile time physical
883 address CONFIG_PHYSICAL_START is ignored.
885 This option is overridden by CONFIG_RELOCATABLE
888 bool "Build a relocatable kernel"
889 depends on ADVANCED_OPTIONS && FLATMEM && 44x
890 select NONSTATIC_KERNEL
892 This builds a kernel image that is capable of running at the
893 location the kernel is loaded at, without any alignment restrictions.
894 This feature is a superset of DYNAMIC_MEMSTART and hence overrides it.
896 One use is for the kexec on panic case where the recovery kernel
897 must live at a different physical address than the primary
900 Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address
901 it has been loaded at and the compile time physical addresses
902 CONFIG_PHYSICAL_START is ignored. However CONFIG_PHYSICAL_START
903 setting can still be useful to bootwrappers that need to know the
904 load address of the kernel (eg. u-boot/mkimage).
906 config RELOCATABLE_PPC32
908 depends on PPC32 && RELOCATABLE
910 config PAGE_OFFSET_BOOL
911 bool "Set custom page offset address"
912 depends on ADVANCED_OPTIONS
914 This option allows you to set the kernel virtual address at which
915 the kernel will map low memory. This can be useful in optimizing
916 the virtual memory layout of the system.
918 Say N here unless you know what you are doing.
921 hex "Virtual address of memory base" if PAGE_OFFSET_BOOL
924 config KERNEL_START_BOOL
925 bool "Set custom kernel base address"
926 depends on ADVANCED_OPTIONS
928 This option allows you to set the kernel virtual address at which
929 the kernel will be loaded. Normally this should match PAGE_OFFSET
930 however there are times (like kdump) that one might not want them
933 Say N here unless you know what you are doing.
936 hex "Virtual address of kernel base" if KERNEL_START_BOOL
937 default PAGE_OFFSET if PAGE_OFFSET_BOOL
938 default "0xc2000000" if CRASH_DUMP && !NONSTATIC_KERNEL
941 config PHYSICAL_START_BOOL
942 bool "Set physical address where the kernel is loaded"
943 depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE
945 This gives the physical address where the kernel is loaded.
947 Say N here unless you know what you are doing.
949 config PHYSICAL_START
950 hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL
951 default "0x02000000" if PPC_STD_MMU && CRASH_DUMP && !NONSTATIC_KERNEL
954 config PHYSICAL_ALIGN
956 default "0x04000000" if FSL_BOOKE
958 This value puts the alignment restrictions on physical address
959 where kernel is loaded and run from. Kernel is compiled for an
960 address which meets above alignment restriction.
962 config TASK_SIZE_BOOL
963 bool "Set custom user task size"
964 depends on ADVANCED_OPTIONS
966 This option allows you to set the amount of virtual address space
967 allocated to user tasks. This can be useful in optimizing the
968 virtual memory layout of the system.
970 Say N here unless you know what you are doing.
973 hex "Size of user task space" if TASK_SIZE_BOOL
974 default "0x80000000" if PPC_8xx
977 config CONSISTENT_SIZE_BOOL
978 bool "Set custom consistent memory pool size"
979 depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
981 This option allows you to set the size of the
982 consistent memory pool. This pool of virtual memory
983 is used to make consistent memory allocations.
985 config CONSISTENT_SIZE
986 hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
987 default "0x00200000" if NOT_COHERENT_CACHE
990 bool "Pinned Kernel TLBs (860 ONLY)"
991 depends on ADVANCED_OPTIONS && 8xx
996 bool "Build a relocatable kernel"
997 select NONSTATIC_KERNEL
999 This builds a kernel image that is capable of running anywhere
1000 in the RMA (real memory area) at any 16k-aligned base address.
1001 The kernel is linked as a position-independent executable (PIE)
1002 and contains dynamic relocations which are processed early
1003 in the bootup process.
1005 One use is for the kexec on panic case where the recovery kernel
1006 must live at a different physical address than the primary
1009 # This value must have zeroes in the bottom 60 bits otherwise lots will break
1012 default "0xc000000000000000"
1015 default "0xc000000000000000"
1016 config PHYSICAL_START
1018 default "0x00000000"
1024 source "net/Kconfig"
1026 source "drivers/Kconfig"
1030 source "arch/powerpc/sysdev/qe_lib/Kconfig"
1032 source "lib/Kconfig"
1034 source "arch/powerpc/Kconfig.debug"
1036 source "security/Kconfig"
1040 depends on COMPAT && KEYS
1043 source "crypto/Kconfig"
1050 config PPC_LIB_RHEAP
1053 source "arch/powerpc/kvm/Kconfig"