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
85 config ARCH_HAS_DMA_SET_COHERENT_MASK
91 select ARCH_MIGHT_HAVE_PC_PARPORT
92 select ARCH_MIGHT_HAVE_PC_SERIO
94 select ARCH_HAS_ELF_RANDOMIZE
96 select OF_EARLY_FLATTREE
97 select OF_RESERVED_MEM
98 select HAVE_FTRACE_MCOUNT_RECORD
99 select HAVE_DYNAMIC_FTRACE
100 select HAVE_FUNCTION_TRACER
101 select HAVE_FUNCTION_GRAPH_TRACER
102 select SYSCTL_EXCEPTION_TRACE
103 select ARCH_WANT_OPTIONAL_GPIOLIB
104 select VIRT_TO_BUS if !PPC64
106 select HAVE_IOREMAP_PROT
107 select HAVE_EFFICIENT_UNALIGNED_ACCESS if !CPU_LITTLE_ENDIAN
109 select HAVE_ARCH_KGDB
110 select HAVE_KRETPROBES
111 select HAVE_ARCH_TRACEHOOK
113 select HAVE_MEMBLOCK_NODE_MAP
114 select HAVE_DMA_ATTRS
115 select HAVE_DMA_API_DEBUG
117 select HAVE_DEBUG_KMEMLEAK
118 select ARCH_HAS_SG_CHAIN
119 select GENERIC_ATOMIC64 if PPC32
120 select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
121 select HAVE_PERF_EVENTS
122 select HAVE_REGS_AND_STACK_ACCESS_API
123 select HAVE_HW_BREAKPOINT if PERF_EVENTS && PPC_BOOK3S_64
124 select ARCH_WANT_IPC_PARSE_VERSION
127 select GENERIC_IRQ_SHOW
128 select GENERIC_IRQ_SHOW_LEVEL
129 select IRQ_FORCED_THREADING
130 select HAVE_RCU_TABLE_FREE if SMP
131 select HAVE_SYSCALL_TRACEPOINTS
133 select HAVE_ARCH_JUMP_LABEL
134 select ARCH_HAVE_NMI_SAFE_CMPXCHG
135 select ARCH_HAS_GCOV_PROFILE_ALL
136 select GENERIC_SMP_IDLE_THREAD
137 select GENERIC_CMOS_UPDATE
138 select GENERIC_TIME_VSYSCALL_OLD
139 select GENERIC_CLOCKEVENTS
140 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
141 select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
142 select GENERIC_STRNCPY_FROM_USER
143 select GENERIC_STRNLEN_USER
144 select HAVE_MOD_ARCH_SPECIFIC
145 select MODULES_USE_ELF_RELA
146 select CLONE_BACKWARDS
147 select ARCH_USE_BUILTIN_BSWAP
148 select OLD_SIGSUSPEND
149 select OLD_SIGACTION if PPC32
150 select HAVE_DEBUG_STACKOVERFLOW
151 select HAVE_IRQ_EXIT_ON_IRQ_STACK
152 select ARCH_USE_CMPXCHG_LOCKREF if PPC64
153 select HAVE_ARCH_AUDITSYSCALL
154 select ARCH_SUPPORTS_ATOMIC_RMW
155 select DCACHE_WORD_ACCESS if PPC64 && CPU_LITTLE_ENDIAN
157 select HAVE_GENERIC_RCU_GUP
158 select HAVE_PERF_EVENTS_NMI if PPC64
160 select EDAC_ATOMIC_SCRUB
161 select ARCH_HAS_DMA_SET_COHERENT_MASK
162 select ARCH_HAS_DEVMEM_IS_ALLOWED
163 select HAVE_ARCH_SECCOMP_FILTER
166 def_bool CPU_LITTLE_ENDIAN
179 select COMPAT_BINFMT_ELF
180 select ARCH_WANT_OLD_COMPAT_IPC
181 select COMPAT_OLD_SIGACTION
183 config SYSVIPC_COMPAT
185 depends on COMPAT && SYSVIPC
188 # All PPC32s use generic nvram driver through ppc_md
193 config SCHED_OMIT_FRAME_POINTER
197 config ARCH_MAY_HAVE_PC_FDC
201 config PPC_UDBG_16550
205 config GENERIC_TBSYNC
207 default y if PPC32 && SMP
219 config SYS_SUPPORTS_APM_EMULATION
220 default y if PMAC_APM_EMU
226 Used to allow a board to specify it wants an ePAPR compliant wrapper.
229 config DEFAULT_UIMAGE
232 Used to allow a board to specify it wants a uImage built by default
235 config ARCH_HIBERNATION_POSSIBLE
239 config ARCH_SUSPEND_POSSIBLE
241 depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx || \
242 (PPC_85xx && !PPC_E500MC) || PPC_86xx || PPC_PSERIES \
245 config PPC_DCR_NATIVE
255 depends on PPC_DCR_NATIVE || PPC_DCR_MMIO
258 config PPC_OF_PLATFORM_PCI
261 depends on PPC64 # not supported on 32 bits yet
264 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
265 depends on PPC32 || PPC_STD_MMU_64
268 config ARCH_SUPPORTS_UPROBES
271 config PPC_ADV_DEBUG_REGS
273 depends on 40x || BOOKE
276 config PPC_ADV_DEBUG_IACS
278 depends on PPC_ADV_DEBUG_REGS
282 config PPC_ADV_DEBUG_DACS
284 depends on PPC_ADV_DEBUG_REGS
287 config PPC_ADV_DEBUG_DVCS
289 depends on PPC_ADV_DEBUG_REGS
293 config PPC_ADV_DEBUG_DAC_RANGE
295 depends on PPC_ADV_DEBUG_REGS && 44x
298 config PPC_EMULATE_SSTEP
300 default y if KPROBES || UPROBES || XMON || HAVE_HW_BREAKPOINT
306 config PGTABLE_LEVELS
309 default 3 if PPC_64K_PAGES
312 source "init/Kconfig"
314 source "kernel/Kconfig.freezer"
316 source "arch/powerpc/sysdev/Kconfig"
317 source "arch/powerpc/platforms/Kconfig"
319 menu "Kernel options"
322 bool "High memory support"
325 source kernel/Kconfig.hz
326 source kernel/Kconfig.preempt
327 source "fs/Kconfig.binfmt"
329 config HUGETLB_PAGE_SIZE_VARIABLE
331 depends on HUGETLB_PAGE
334 config MATH_EMULATION
335 bool "Math emulation"
336 depends on 4xx || 8xx || PPC_MPC832x || BOOKE
338 Some PowerPC chips designed for embedded applications do not have
339 a floating-point unit and therefore do not implement the
340 floating-point instructions in the PowerPC instruction set. If you
341 say Y here, the kernel will include code to emulate a floating-point
342 unit, which will allow programs that use floating-point
345 This is also useful to emulate missing (optional) instructions
346 such as fsqrt on cores that do have an FPU but do not implement
347 them (such as Freescale BookE).
350 prompt "Math emulation options"
351 default MATH_EMULATION_FULL
352 depends on MATH_EMULATION
354 config MATH_EMULATION_FULL
355 bool "Emulate all the floating point instructions"
357 Select this option will enable the kernel to support to emulate
358 all the floating point instructions. If your SoC doesn't have
359 a FPU, you should select this.
361 config MATH_EMULATION_HW_UNIMPLEMENTED
362 bool "Just emulate the FPU unimplemented instructions"
364 Select this if you know there does have a hardware FPU on your
365 SoC, but some floating point instructions are not implemented by that.
369 config PPC_TRANSACTIONAL_MEM
370 bool "Transactional Memory support for POWERPC"
371 depends on PPC_BOOK3S_64
377 Support user-mode Transactional Memory on POWERPC.
383 bool "SWIOTLB support"
387 Support for IO bounce buffering for systems without an IOMMU.
388 This allows us to DMA to the full physical address space on
389 platforms where the size of a physical address is larger
390 than the bus address. Not all platforms support this.
393 bool "Support for enabling/disabling CPUs"
394 depends on SMP && (PPC_PSERIES || \
395 PPC_PMAC || PPC_POWERNV || (PPC_85xx && !PPC_E500MC))
397 Say Y here to be able to disable and re-enable individual
398 CPUs at runtime on SMP machines.
400 Say N if you are unsure.
402 config ARCH_CPU_PROBE_RELEASE
404 depends on HOTPLUG_CPU
406 config ARCH_ENABLE_MEMORY_HOTPLUG
409 config ARCH_HAS_WALK_MEMORY
412 config ARCH_ENABLE_MEMORY_HOTREMOVE
415 config PPC64_SUPPORTS_MEMORY_FAILURE
416 bool "Add support for memory hwpoison"
417 depends on PPC_BOOK3S_64
418 default "y" if PPC_POWERNV
419 select ARCH_SUPPORTS_MEMORY_FAILURE
422 bool "kexec system call"
423 depends on (PPC_BOOK3S || FSL_BOOKE || (44x && !SMP)) || PPC_BOOK3E
426 kexec is a system call that implements the ability to shutdown your
427 current kernel, and to start another kernel. It is like a reboot
428 but it is independent of the system firmware. And like a reboot
429 you can start any kernel with it, not just Linux.
431 The name comes from the similarity to the exec system call.
433 It is an ongoing process to be certain the hardware in a machine
434 is properly shutdown, so do not be surprised if this code does not
435 initially work for you. As of this writing the exact hardware
436 interface is strongly in flux, so no good recommendation can be
440 bool "Build a kdump crash kernel"
441 depends on PPC64 || 6xx || FSL_BOOKE || (44x && !SMP)
442 select RELOCATABLE if (PPC64 && !COMPILE_TEST) || 44x || FSL_BOOKE
444 Build a kernel suitable for use as a kdump capture kernel.
445 The same kernel binary can be used as production kernel and dump
449 bool "Firmware-assisted dump"
450 depends on PPC64 && PPC_RTAS && CRASH_DUMP && KEXEC
452 A robust mechanism to get reliable kernel crash dump with
453 assistance from firmware. This approach does not use kexec,
454 instead firmware assists in booting the kdump kernel
455 while preserving memory contents. Firmware-assisted dump
456 is meant to be a kdump replacement offering robustness and
457 speed not possible without system firmware assistance.
462 bool "Distribute interrupts on all CPUs by default"
465 This option gives the kernel permission to distribute IRQs across
466 multiple CPUs. Saying N here will route all IRQs to the first
467 CPU. Generally saying Y is safe, although some problems have been
468 reported with SMP Power Macintoshes with this option enabled.
473 default y if SMP && PPC_PSERIES
479 depends on NEED_MULTIPLE_NODES
481 config USE_PERCPU_NUMA_NODE_ID
485 config HAVE_MEMORYLESS_NODES
489 config ARCH_SELECT_MEMORY_MODEL
493 config ARCH_FLATMEM_ENABLE
495 depends on (PPC64 && !NUMA) || PPC32
497 config ARCH_SPARSEMEM_ENABLE
500 select SPARSEMEM_VMEMMAP_ENABLE
502 config ARCH_SPARSEMEM_DEFAULT
504 depends on (SMP && PPC_PSERIES) || PPC_PS3
506 config SYS_SUPPORTS_HUGETLBFS
511 config ARCH_MEMORY_PROBE
513 depends on MEMORY_HOTPLUG
515 # Some NUMA nodes have memory ranges that span
516 # other nodes. Even though a pfn is valid and
517 # between a node's start and end pfns, it may not
518 # reside on that node. See memmap_init_zone()
520 config NODES_SPAN_OTHER_NODES
522 depends on NEED_MULTIPLE_NODES
525 bool "Using standard binutils settings"
529 Turning this option off allows you to select 256KB PAGE_SIZE on 44x.
530 Note, that kernel will be able to run only those applications,
531 which had been compiled using binutils later than 2.17.50.0.3 with
532 '-zmax-page-size' set to 256K (the default is 64K). Or, if using
533 the older binutils, you can patch them with a trivial patch, which
534 changes the ELF_MAXPAGESIZE definition from 0x10000 to 0x40000.
540 Select the kernel logical page size. Increasing the page size
541 will reduce software overhead at each page boundary, allow
542 hardware prefetch mechanisms to be more effective, and allow
543 larger dma transfers increasing IO efficiency and reducing
544 overhead. However the utilization of memory will increase.
545 For example, each cached file will using a multiple of the
546 page size to hold its contents and the difference between the
547 end of file and the end of page is wasted.
549 Some dedicated systems, such as software raid serving with
550 accelerated calculations, have shown significant increases.
552 If you configure a 64 bit kernel for 64k pages but the
553 processor does not support them, then the kernel will simulate
554 them with 4k pages, loading them on demand, but with the
555 reduced software overhead and larger internal fragmentation.
556 For the 32 bit kernel, a large page option will not be offered
557 unless it is supported by the configured processor.
559 If unsure, choose 4K_PAGES.
563 select HAVE_ARCH_SOFT_DIRTY if CHECKPOINT_RESTORE && PPC_BOOK3S
567 depends on 44x || PPC_8xx
571 depends on !PPC_FSL_BOOK3E && (44x || PPC_STD_MMU_64 || PPC_BOOK3E_64)
572 select HAVE_ARCH_SOFT_DIRTY if CHECKPOINT_RESTORE && PPC_BOOK3S
574 config PPC_256K_PAGES
575 bool "256k page size"
576 depends on 44x && !STDBINUTILS
578 Make the page size 256k.
580 As the ELF standard only requires alignment to support page
581 sizes up to 64k, you will need to compile all of your user
582 space applications with a non-standard binutils settings
583 (see the STDBINUTILS description for details).
585 Say N unless you know what you are doing.
589 config FORCE_MAX_ZONEORDER
590 int "Maximum zone order"
591 range 9 64 if PPC64 && PPC_64K_PAGES
592 default "9" if PPC64 && PPC_64K_PAGES
593 range 13 64 if PPC64 && !PPC_64K_PAGES
594 default "13" if PPC64 && !PPC_64K_PAGES
595 range 9 64 if PPC32 && PPC_16K_PAGES
596 default "9" if PPC32 && PPC_16K_PAGES
597 range 7 64 if PPC32 && PPC_64K_PAGES
598 default "7" if PPC32 && PPC_64K_PAGES
599 range 5 64 if PPC32 && PPC_256K_PAGES
600 default "5" if PPC32 && PPC_256K_PAGES
604 The kernel memory allocator divides physically contiguous memory
605 blocks into "zones", where each zone is a power of two number of
606 pages. This option selects the largest power of two that the kernel
607 keeps in the memory allocator. If you need to allocate very large
608 blocks of physically contiguous memory, then you may need to
611 This config option is actually maximum order plus one. For example,
612 a value of 11 means that the largest free memory block is 2^10 pages.
614 The page size is not necessarily 4KB. For example, on 64-bit
615 systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES. Keep
616 this in mind when choosing a value for this option.
618 config PPC_SUBPAGE_PROT
619 bool "Support setting protections for 4k subpages"
620 depends on PPC_STD_MMU_64 && PPC_64K_PAGES
622 This option adds support for a system call to allow user programs
623 to set access permissions (read/write, readonly, or no access)
624 on the 4k subpages of each 64k page.
626 config PPC_COPRO_BASE
631 bool "SMT (Hyperthreading) scheduler support"
632 depends on PPC64 && SMP
634 SMT scheduler support improves the CPU scheduler's decision making
635 when dealing with POWER5 cpus at a cost of slightly increased
636 overhead in some places. If unsure say N here.
638 config PPC_DENORMALISATION
639 bool "PowerPC denormalisation exception handling"
640 depends on PPC_BOOK3S_64
641 default "y" if PPC_POWERNV
643 Add support for handling denormalisation of single precision
644 values. Useful for bare metal only. If unsure say Y here.
647 bool "Default bootloader kernel arguments"
650 string "Initial kernel command string"
651 depends on CMDLINE_BOOL
652 default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
654 On some platforms, there is currently no way for the boot loader to
655 pass arguments to the kernel. For these platforms, you can supply
656 some command-line options at build time by entering them here. In
657 most cases you will need to specify the root device here.
660 bool "Always use the default kernel command string"
661 depends on CMDLINE_BOOL
663 Always use the default kernel command string, even if the boot
664 loader passes other arguments to the kernel.
665 This is useful if you cannot or don't want to change the
666 command-line options your boot loader passes to the kernel.
669 string "Additional default image types"
671 List additional targets to be built by the bootwrapper here (separated
672 by spaces). This is useful for targets that depend of device tree
673 files in the .dts directory.
675 Targets in this list will be build as part of the default build
676 target, or when the user does a 'make zImage' or a
677 'make zImage.initrd'.
679 If unsure, leave blank
681 config ARCH_WANTS_FREEZER_CONTROL
685 source kernel/power/Kconfig
688 bool "Enable seccomp to safely compute untrusted bytecode"
692 This kernel feature is useful for number crunching applications
693 that may need to compute untrusted bytecode during their
694 execution. By using pipes or other transports made available to
695 the process as file descriptors supporting the read/write
696 syscalls, it's possible to isolate those applications in
697 their own address space using seccomp. Once seccomp is
698 enabled via /proc/<pid>/seccomp, it cannot be disabled
699 and the task is only allowed to execute a few safe syscalls
700 defined by each seccomp mode.
702 If unsure, say Y. Only embedded should say N here.
713 bool "Support for ISA-bus hardware"
717 Find out whether you have ISA slots on your motherboard. ISA is the
718 name of a bus system, i.e. the way the CPU talks to the other stuff
719 inside your box. If you have an Apple machine, say N here; if you
720 have an IBM RS/6000 or pSeries machine, say Y. If you have an
721 embedded board, consult your board documentation.
727 config NEED_DMA_MAP_STATE
728 def_bool (PPC64 || NOT_COHERENT_CACHE)
730 config NEED_SG_DMA_LENGTH
733 config GENERIC_ISA_DMA
735 depends on ISA_DMA_API
738 config PPC_INDIRECT_PCI
741 default y if 40x || 44x
755 select PPC_INDIRECT_PCI
761 depends on SUSPEND && (PPC_85xx || PPC_86xx)
763 Freescale MPC85xx/MPC86xx power management controller support
764 (suspend/resume). For MPC83xx see platforms/83xx/suspend.c
769 depends on SUSPEND && (44x || 40x)
771 PPC4xx Clock Power Management (CPM) support (suspend/resume).
772 It also enables support for two different idle states (idle-wait
779 bool "Freescale Local Bus support"
782 Enables reporting of errors from the Freescale local bus
783 controller. Also contains some common code used by
784 drivers for specific local bus peripherals.
788 depends on PPC_83xx || QUICC_ENGINE || CPM2
790 Freescale General-purpose Timers support
792 # Yes MCA RS/6000s exist but Linux-PPC does not currently support any
796 # Platforms that what PCI turned unconditionally just do select PCI
797 # in their config node. Platforms that want to choose at config
798 # time should select PPC_PCI_CHOICE
799 config PPC_PCI_CHOICE
803 bool "PCI support" if PPC_PCI_CHOICE
804 default y if !40x && !CPM2 && !8xx && !PPC_83xx \
805 && !PPC_85xx && !PPC_86xx && !GAMECUBE_COMMON
806 default PCI_QSPAN if !4xx && !CPM2 && 8xx
807 select GENERIC_PCI_IOMAP
809 Find out whether your system includes a PCI bus. PCI is the name of
810 a bus system, i.e. the way the CPU talks to the other stuff inside
811 your box. If you say Y here, the kernel will include drivers and
812 infrastructure code to support PCI bus devices.
822 depends on !4xx && !CPM2 && 8xx
825 Say Y here if you have a system based on a Motorola 8xx-series
826 embedded processor with a QSPAN PCI interface, otherwise say N.
830 depends on PCI && 8260
831 select PPC_INDIRECT_PCI
834 source "drivers/pci/pcie/Kconfig"
836 source "drivers/pci/Kconfig"
838 source "drivers/pcmcia/Kconfig"
840 source "drivers/pci/hotplug/Kconfig"
847 tristate "RapidIO support"
848 depends on HAS_RAPIDIO || PCI
850 If you say Y here, the kernel will include drivers and
851 infrastructure code to support RapidIO interconnect devices.
854 bool "Freescale Embedded SRIO Controller support"
855 depends on RAPIDIO = y && HAS_RAPIDIO
858 Include support for RapidIO controller on Freescale embedded
859 processors (MPC8548, MPC8641, etc).
861 source "drivers/rapidio/Kconfig"
865 config NONSTATIC_KERNEL
869 menu "Advanced setup"
872 config ADVANCED_OPTIONS
873 bool "Prompt for advanced kernel configuration options"
875 This option will enable prompting for a variety of advanced kernel
876 configuration options. These options can cause the kernel to not
877 work if they are set incorrectly, but can be used to optimize certain
878 aspects of kernel memory management.
880 Unless you know what you are doing, say N here.
882 comment "Default settings for advanced configuration options are used"
883 depends on !ADVANCED_OPTIONS
885 config LOWMEM_SIZE_BOOL
886 bool "Set maximum low memory"
887 depends on ADVANCED_OPTIONS
889 This option allows you to set the maximum amount of memory which
890 will be used as "low memory", that is, memory which the kernel can
891 access directly, without having to set up a kernel virtual mapping.
892 This can be useful in optimizing the layout of kernel virtual
895 Say N here unless you know what you are doing.
898 hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
901 config LOWMEM_CAM_NUM_BOOL
902 bool "Set number of CAMs to use to map low memory"
903 depends on ADVANCED_OPTIONS && FSL_BOOKE
905 This option allows you to set the maximum number of CAM slots that
906 will be used to map low memory. There are a limited number of slots
907 available and even more limited number that will fit in the L1 MMU.
908 However, using more entries will allow mapping more low memory. This
909 can be useful in optimizing the layout of kernel virtual memory.
911 Say N here unless you know what you are doing.
913 config LOWMEM_CAM_NUM
915 int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL
918 config DYNAMIC_MEMSTART
919 bool "Enable page aligned dynamic load address for kernel"
920 depends on ADVANCED_OPTIONS && FLATMEM && (FSL_BOOKE || 44x)
921 select NONSTATIC_KERNEL
923 This option enables the kernel to be loaded at any page aligned
924 physical address. The kernel creates a mapping from KERNELBASE to
925 the address where the kernel is loaded. The page size here implies
926 the TLB page size of the mapping for kernel on the particular platform.
927 Please refer to the init code for finding the TLB page size.
929 DYNAMIC_MEMSTART is an easy way of implementing pseudo-RELOCATABLE
930 kernel image, where the only restriction is the page aligned kernel
931 load address. When this option is enabled, the compile time physical
932 address CONFIG_PHYSICAL_START is ignored.
934 This option is overridden by CONFIG_RELOCATABLE
937 bool "Build a relocatable kernel"
938 depends on ADVANCED_OPTIONS && FLATMEM && (44x || FSL_BOOKE)
939 select NONSTATIC_KERNEL
941 This builds a kernel image that is capable of running at the
942 location the kernel is loaded at, without any alignment restrictions.
943 This feature is a superset of DYNAMIC_MEMSTART and hence overrides it.
945 One use is for the kexec on panic case where the recovery kernel
946 must live at a different physical address than the primary
949 Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address
950 it has been loaded at and the compile time physical addresses
951 CONFIG_PHYSICAL_START is ignored. However CONFIG_PHYSICAL_START
952 setting can still be useful to bootwrappers that need to know the
953 load address of the kernel (eg. u-boot/mkimage).
955 config RELOCATABLE_PPC32
957 depends on PPC32 && RELOCATABLE
959 config PAGE_OFFSET_BOOL
960 bool "Set custom page offset address"
961 depends on ADVANCED_OPTIONS
963 This option allows you to set the kernel virtual address at which
964 the kernel will map low memory. This can be useful in optimizing
965 the virtual memory layout of the system.
967 Say N here unless you know what you are doing.
970 hex "Virtual address of memory base" if PAGE_OFFSET_BOOL
973 config KERNEL_START_BOOL
974 bool "Set custom kernel base address"
975 depends on ADVANCED_OPTIONS
977 This option allows you to set the kernel virtual address at which
978 the kernel will be loaded. Normally this should match PAGE_OFFSET
979 however there are times (like kdump) that one might not want them
982 Say N here unless you know what you are doing.
985 hex "Virtual address of kernel base" if KERNEL_START_BOOL
986 default PAGE_OFFSET if PAGE_OFFSET_BOOL
987 default "0xc2000000" if CRASH_DUMP && !NONSTATIC_KERNEL
990 config PHYSICAL_START_BOOL
991 bool "Set physical address where the kernel is loaded"
992 depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE
994 This gives the physical address where the kernel is loaded.
996 Say N here unless you know what you are doing.
998 config PHYSICAL_START
999 hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL
1000 default "0x02000000" if PPC_STD_MMU && CRASH_DUMP && !NONSTATIC_KERNEL
1001 default "0x00000000"
1003 config PHYSICAL_ALIGN
1005 default "0x04000000" if FSL_BOOKE
1007 This value puts the alignment restrictions on physical address
1008 where kernel is loaded and run from. Kernel is compiled for an
1009 address which meets above alignment restriction.
1011 config TASK_SIZE_BOOL
1012 bool "Set custom user task size"
1013 depends on ADVANCED_OPTIONS
1015 This option allows you to set the amount of virtual address space
1016 allocated to user tasks. This can be useful in optimizing the
1017 virtual memory layout of the system.
1019 Say N here unless you know what you are doing.
1022 hex "Size of user task space" if TASK_SIZE_BOOL
1023 default "0x80000000" if PPC_8xx
1024 default "0xc0000000"
1026 config CONSISTENT_SIZE_BOOL
1027 bool "Set custom consistent memory pool size"
1028 depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
1030 This option allows you to set the size of the
1031 consistent memory pool. This pool of virtual memory
1032 is used to make consistent memory allocations.
1034 config CONSISTENT_SIZE
1035 hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
1036 default "0x00200000" if NOT_COHERENT_CACHE
1039 bool "Pinned Kernel TLBs (860 ONLY)"
1040 depends on ADVANCED_OPTIONS && 8xx
1045 bool "Build a relocatable kernel"
1046 depends on !COMPILE_TEST
1047 select NONSTATIC_KERNEL
1049 This builds a kernel image that is capable of running anywhere
1050 in the RMA (real memory area) at any 16k-aligned base address.
1051 The kernel is linked as a position-independent executable (PIE)
1052 and contains dynamic relocations which are processed early
1053 in the bootup process.
1055 One use is for the kexec on panic case where the recovery kernel
1056 must live at a different physical address than the primary
1059 # This value must have zeroes in the bottom 60 bits otherwise lots will break
1062 default "0xc000000000000000"
1065 default "0xc000000000000000"
1066 config PHYSICAL_START
1068 default "0x00000000"
1074 source "net/Kconfig"
1076 source "drivers/Kconfig"
1080 source "lib/Kconfig"
1082 source "arch/powerpc/Kconfig.debug"
1084 source "security/Kconfig"
1088 depends on COMPAT && KEYS
1091 source "crypto/Kconfig"
1093 config PPC_LIB_RHEAP
1096 source "arch/powerpc/kvm/Kconfig"