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
143 select ARCH_USE_CMPXCHG_LOCKREF if PPC64
144 select ARCH_SUPPORTS_ATOMIC_RMW
147 def_bool CPU_LITTLE_ENDIAN
160 select COMPAT_BINFMT_ELF
161 select ARCH_WANT_OLD_COMPAT_IPC
162 select COMPAT_OLD_SIGACTION
164 config SYSVIPC_COMPAT
166 depends on COMPAT && SYSVIPC
169 # All PPC32s use generic nvram driver through ppc_md
174 config SCHED_OMIT_FRAME_POINTER
178 config ARCH_MAY_HAVE_PC_FDC
180 default !PPC_PSERIES || PCI
185 config PPC_UDBG_16550
189 config GENERIC_TBSYNC
191 default y if PPC32 && SMP
203 config SYS_SUPPORTS_APM_EMULATION
204 default y if PMAC_APM_EMU
210 Used to allow a board to specify it wants an ePAPR compliant wrapper.
213 config DEFAULT_UIMAGE
216 Used to allow a board to specify it wants a uImage built by default
219 config ARCH_HIBERNATION_POSSIBLE
223 config ARCH_SUSPEND_POSSIBLE
225 depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx || \
226 (PPC_85xx && !PPC_E500MC) || PPC_86xx || PPC_PSERIES \
229 config PPC_DCR_NATIVE
239 depends on PPC_DCR_NATIVE || PPC_DCR_MMIO
242 config PPC_OF_PLATFORM_PCI
245 depends on PPC64 # not supported on 32 bits yet
248 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
251 config ARCH_SUPPORTS_UPROBES
254 config PPC_ADV_DEBUG_REGS
256 depends on 40x || BOOKE
259 config PPC_ADV_DEBUG_IACS
261 depends on PPC_ADV_DEBUG_REGS
265 config PPC_ADV_DEBUG_DACS
267 depends on PPC_ADV_DEBUG_REGS
270 config PPC_ADV_DEBUG_DVCS
272 depends on PPC_ADV_DEBUG_REGS
276 config PPC_ADV_DEBUG_DAC_RANGE
278 depends on PPC_ADV_DEBUG_REGS && 44x
281 config PPC_EMULATE_SSTEP
283 default y if KPROBES || UPROBES || XMON || HAVE_HW_BREAKPOINT
285 source "init/Kconfig"
287 source "kernel/Kconfig.freezer"
289 source "arch/powerpc/sysdev/Kconfig"
290 source "arch/powerpc/platforms/Kconfig"
292 menu "Kernel options"
295 bool "High memory support"
298 source kernel/Kconfig.hz
299 source kernel/Kconfig.preempt
300 source "fs/Kconfig.binfmt"
302 config HUGETLB_PAGE_SIZE_VARIABLE
304 depends on HUGETLB_PAGE
307 config MATH_EMULATION
308 bool "Math emulation"
309 depends on 4xx || 8xx || PPC_MPC832x || BOOKE
311 Some PowerPC chips designed for embedded applications do not have
312 a floating-point unit and therefore do not implement the
313 floating-point instructions in the PowerPC instruction set. If you
314 say Y here, the kernel will include code to emulate a floating-point
315 unit, which will allow programs that use floating-point
318 This is also useful to emulate missing (optional) instructions
319 such as fsqrt on cores that do have an FPU but do not implement
320 them (such as Freescale BookE).
323 prompt "Math emulation options"
324 default MATH_EMULATION_FULL
325 depends on MATH_EMULATION
327 config MATH_EMULATION_FULL
328 bool "Emulate all the floating point instructions"
330 Select this option will enable the kernel to support to emulate
331 all the floating point instructions. If your SoC doesn't have
332 a FPU, you should select this.
334 config MATH_EMULATION_HW_UNIMPLEMENTED
335 bool "Just emulate the FPU unimplemented instructions"
337 Select this if you know there does have a hardware FPU on your
338 SoC, but some floating point instructions are not implemented by that.
342 config PPC_TRANSACTIONAL_MEM
343 bool "Transactional Memory support for POWERPC"
344 depends on PPC_BOOK3S_64
350 Support user-mode Transactional Memory on POWERPC.
356 bool "SWIOTLB support"
360 Support for IO bounce buffering for systems without an IOMMU.
361 This allows us to DMA to the full physical address space on
362 platforms where the size of a physical address is larger
363 than the bus address. Not all platforms support this.
366 bool "Support for enabling/disabling CPUs"
367 depends on SMP && (PPC_PSERIES || \
368 PPC_PMAC || PPC_POWERNV || (PPC_85xx && !PPC_E500MC))
370 Say Y here to be able to disable and re-enable individual
371 CPUs at runtime on SMP machines.
373 Say N if you are unsure.
375 config ARCH_CPU_PROBE_RELEASE
377 depends on HOTPLUG_CPU
379 config ARCH_ENABLE_MEMORY_HOTPLUG
382 config ARCH_HAS_WALK_MEMORY
385 config ARCH_ENABLE_MEMORY_HOTREMOVE
388 config PPC64_SUPPORTS_MEMORY_FAILURE
389 bool "Add support for memory hwpoison"
390 depends on PPC_BOOK3S_64
391 default "y" if PPC_POWERNV
392 select ARCH_SUPPORTS_MEMORY_FAILURE
395 bool "kexec system call"
396 depends on (PPC_BOOK3S || FSL_BOOKE || (44x && !SMP))
398 kexec is a system call that implements the ability to shutdown your
399 current kernel, and to start another kernel. It is like a reboot
400 but it is independent of the system firmware. And like a reboot
401 you can start any kernel with it, not just Linux.
403 The name comes from the similarity to the exec system call.
405 It is an ongoing process to be certain the hardware in a machine
406 is properly shutdown, so do not be surprised if this code does not
407 initially work for you. As of this writing the exact hardware
408 interface is strongly in flux, so no good recommendation can be
412 bool "Build a kdump crash kernel"
413 depends on PPC64 || 6xx || FSL_BOOKE || (44x && !SMP)
414 select RELOCATABLE if (PPC64 && !COMPILE_TEST) || 44x || FSL_BOOKE
416 Build a kernel suitable for use as a kdump capture kernel.
417 The same kernel binary can be used as production kernel and dump
421 bool "Firmware-assisted dump"
422 depends on PPC64 && PPC_RTAS && CRASH_DUMP && KEXEC
424 A robust mechanism to get reliable kernel crash dump with
425 assistance from firmware. This approach does not use kexec,
426 instead firmware assists in booting the kdump kernel
427 while preserving memory contents. Firmware-assisted dump
428 is meant to be a kdump replacement offering robustness and
429 speed not possible without system firmware assistance.
434 bool "Distribute interrupts on all CPUs by default"
437 This option gives the kernel permission to distribute IRQs across
438 multiple CPUs. Saying N here will route all IRQs to the first
439 CPU. Generally saying Y is safe, although some problems have been
440 reported with SMP Power Macintoshes with this option enabled.
445 default y if SMP && PPC_PSERIES
451 depends on NEED_MULTIPLE_NODES
453 config ARCH_SELECT_MEMORY_MODEL
457 config ARCH_FLATMEM_ENABLE
459 depends on (PPC64 && !NUMA) || PPC32
461 config ARCH_SPARSEMEM_ENABLE
464 select SPARSEMEM_VMEMMAP_ENABLE
466 config ARCH_SPARSEMEM_DEFAULT
468 depends on (SMP && PPC_PSERIES) || PPC_PS3
470 config SYS_SUPPORTS_HUGETLBFS
475 config ARCH_MEMORY_PROBE
477 depends on MEMORY_HOTPLUG
479 # Some NUMA nodes have memory ranges that span
480 # other nodes. Even though a pfn is valid and
481 # between a node's start and end pfns, it may not
482 # reside on that node. See memmap_init_zone()
484 config NODES_SPAN_OTHER_NODES
486 depends on NEED_MULTIPLE_NODES
488 config PPC_HAS_HASH_64K
494 bool "Using standard binutils settings"
498 Turning this option off allows you to select 256KB PAGE_SIZE on 44x.
499 Note, that kernel will be able to run only those applications,
500 which had been compiled using binutils later than 2.17.50.0.3 with
501 '-zmax-page-size' set to 256K (the default is 64K). Or, if using
502 the older binutils, you can patch them with a trivial patch, which
503 changes the ELF_MAXPAGESIZE definition from 0x10000 to 0x40000.
509 Select the kernel logical page size. Increasing the page size
510 will reduce software overhead at each page boundary, allow
511 hardware prefetch mechanisms to be more effective, and allow
512 larger dma transfers increasing IO efficiency and reducing
513 overhead. However the utilization of memory will increase.
514 For example, each cached file will using a multiple of the
515 page size to hold its contents and the difference between the
516 end of file and the end of page is wasted.
518 Some dedicated systems, such as software raid serving with
519 accelerated calculations, have shown significant increases.
521 If you configure a 64 bit kernel for 64k pages but the
522 processor does not support them, then the kernel will simulate
523 them with 4k pages, loading them on demand, but with the
524 reduced software overhead and larger internal fragmentation.
525 For the 32 bit kernel, a large page option will not be offered
526 unless it is supported by the configured processor.
528 If unsure, choose 4K_PAGES.
534 bool "16k page size" if 44x
537 bool "64k page size" if 44x || PPC_STD_MMU_64 || PPC_BOOK3E_64
538 depends on !PPC_FSL_BOOK3E
539 select PPC_HAS_HASH_64K if PPC_STD_MMU_64
541 config PPC_256K_PAGES
542 bool "256k page size" if 44x
543 depends on !STDBINUTILS
545 Make the page size 256k.
547 As the ELF standard only requires alignment to support page
548 sizes up to 64k, you will need to compile all of your user
549 space applications with a non-standard binutils settings
550 (see the STDBINUTILS description for details).
552 Say N unless you know what you are doing.
556 config FORCE_MAX_ZONEORDER
557 int "Maximum zone order"
558 range 9 64 if PPC64 && PPC_64K_PAGES
559 default "9" if PPC64 && PPC_64K_PAGES
560 range 13 64 if PPC64 && !PPC_64K_PAGES
561 default "13" if PPC64 && !PPC_64K_PAGES
562 range 9 64 if PPC32 && PPC_16K_PAGES
563 default "9" if PPC32 && PPC_16K_PAGES
564 range 7 64 if PPC32 && PPC_64K_PAGES
565 default "7" if PPC32 && PPC_64K_PAGES
566 range 5 64 if PPC32 && PPC_256K_PAGES
567 default "5" if PPC32 && PPC_256K_PAGES
571 The kernel memory allocator divides physically contiguous memory
572 blocks into "zones", where each zone is a power of two number of
573 pages. This option selects the largest power of two that the kernel
574 keeps in the memory allocator. If you need to allocate very large
575 blocks of physically contiguous memory, then you may need to
578 This config option is actually maximum order plus one. For example,
579 a value of 11 means that the largest free memory block is 2^10 pages.
581 The page size is not necessarily 4KB. For example, on 64-bit
582 systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES. Keep
583 this in mind when choosing a value for this option.
585 config PPC_SUBPAGE_PROT
586 bool "Support setting protections for 4k subpages"
587 depends on PPC_STD_MMU_64 && PPC_64K_PAGES
589 This option adds support for a system call to allow user programs
590 to set access permissions (read/write, readonly, or no access)
591 on the 4k subpages of each 64k page.
594 bool "SMT (Hyperthreading) scheduler support"
595 depends on PPC64 && SMP
597 SMT scheduler support improves the CPU scheduler's decision making
598 when dealing with POWER5 cpus at a cost of slightly increased
599 overhead in some places. If unsure say N here.
601 config PPC_DENORMALISATION
602 bool "PowerPC denormalisation exception handling"
603 depends on PPC_BOOK3S_64
604 default "y" if PPC_POWERNV
606 Add support for handling denormalisation of single precision
607 values. Useful for bare metal only. If unsure say Y here.
610 bool "Default bootloader kernel arguments"
613 string "Initial kernel command string"
614 depends on CMDLINE_BOOL
615 default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
617 On some platforms, there is currently no way for the boot loader to
618 pass arguments to the kernel. For these platforms, you can supply
619 some command-line options at build time by entering them here. In
620 most cases you will need to specify the root device here.
623 string "Additional default image types"
625 List additional targets to be built by the bootwrapper here (separated
626 by spaces). This is useful for targets that depend of device tree
627 files in the .dts directory.
629 Targets in this list will be build as part of the default build
630 target, or when the user does a 'make zImage' or a
631 'make zImage.initrd'.
633 If unsure, leave blank
635 config ARCH_WANTS_FREEZER_CONTROL
639 source kernel/power/Kconfig
642 bool "Enable seccomp to safely compute untrusted bytecode"
646 This kernel feature is useful for number crunching applications
647 that may need to compute untrusted bytecode during their
648 execution. By using pipes or other transports made available to
649 the process as file descriptors supporting the read/write
650 syscalls, it's possible to isolate those applications in
651 their own address space using seccomp. Once seccomp is
652 enabled via /proc/<pid>/seccomp, it cannot be disabled
653 and the task is only allowed to execute a few safe syscalls
654 defined by each seccomp mode.
656 If unsure, say Y. Only embedded should say N here.
667 bool "Support for ISA-bus hardware"
671 Find out whether you have ISA slots on your motherboard. ISA is the
672 name of a bus system, i.e. the way the CPU talks to the other stuff
673 inside your box. If you have an Apple machine, say N here; if you
674 have an IBM RS/6000 or pSeries machine, say Y. If you have an
675 embedded board, consult your board documentation.
681 config NEED_DMA_MAP_STATE
682 def_bool (PPC64 || NOT_COHERENT_CACHE)
684 config NEED_SG_DMA_LENGTH
687 config GENERIC_ISA_DMA
689 depends on ISA_DMA_API
692 config PPC_INDIRECT_PCI
695 default y if 40x || 44x
709 select PPC_INDIRECT_PCI
715 depends on SUSPEND && (PPC_85xx || PPC_86xx)
717 Freescale MPC85xx/MPC86xx power management controller support
718 (suspend/resume). For MPC83xx see platforms/83xx/suspend.c
723 depends on SUSPEND && (44x || 40x)
725 PPC4xx Clock Power Management (CPM) support (suspend/resume).
726 It also enables support for two different idle states (idle-wait
733 bool "Freescale Local Bus support"
736 Enables reporting of errors from the Freescale local bus
737 controller. Also contains some common code used by
738 drivers for specific local bus peripherals.
746 depends on PPC_83xx || QUICC_ENGINE || CPM2
748 Freescale General-purpose Timers support
750 # Yes MCA RS/6000s exist but Linux-PPC does not currently support any
754 # Platforms that what PCI turned unconditionally just do select PCI
755 # in their config node. Platforms that want to choose at config
756 # time should select PPC_PCI_CHOICE
757 config PPC_PCI_CHOICE
761 bool "PCI support" if PPC_PCI_CHOICE
762 default y if !40x && !CPM2 && !8xx && !PPC_83xx \
763 && !PPC_85xx && !PPC_86xx && !GAMECUBE_COMMON
764 default PCI_QSPAN if !4xx && !CPM2 && 8xx
765 select GENERIC_PCI_IOMAP
767 Find out whether your system includes a PCI bus. PCI is the name of
768 a bus system, i.e. the way the CPU talks to the other stuff inside
769 your box. If you say Y here, the kernel will include drivers and
770 infrastructure code to support PCI bus devices.
780 depends on !4xx && !CPM2 && 8xx
783 Say Y here if you have a system based on a Motorola 8xx-series
784 embedded processor with a QSPAN PCI interface, otherwise say N.
788 depends on PCI && 8260
789 select PPC_INDIRECT_PCI
792 source "drivers/pci/pcie/Kconfig"
794 source "drivers/pci/Kconfig"
796 source "drivers/pcmcia/Kconfig"
798 source "drivers/pci/hotplug/Kconfig"
805 tristate "RapidIO support"
806 depends on HAS_RAPIDIO || PCI
808 If you say Y here, the kernel will include drivers and
809 infrastructure code to support RapidIO interconnect devices.
812 bool "Freescale Embedded SRIO Controller support"
813 depends on RAPIDIO = y && HAS_RAPIDIO
816 Include support for RapidIO controller on Freescale embedded
817 processors (MPC8548, MPC8641, etc).
819 source "drivers/rapidio/Kconfig"
823 config NONSTATIC_KERNEL
827 menu "Advanced setup"
830 config ADVANCED_OPTIONS
831 bool "Prompt for advanced kernel configuration options"
833 This option will enable prompting for a variety of advanced kernel
834 configuration options. These options can cause the kernel to not
835 work if they are set incorrectly, but can be used to optimize certain
836 aspects of kernel memory management.
838 Unless you know what you are doing, say N here.
840 comment "Default settings for advanced configuration options are used"
841 depends on !ADVANCED_OPTIONS
843 config LOWMEM_SIZE_BOOL
844 bool "Set maximum low memory"
845 depends on ADVANCED_OPTIONS
847 This option allows you to set the maximum amount of memory which
848 will be used as "low memory", that is, memory which the kernel can
849 access directly, without having to set up a kernel virtual mapping.
850 This can be useful in optimizing the layout of kernel virtual
853 Say N here unless you know what you are doing.
856 hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
859 config LOWMEM_CAM_NUM_BOOL
860 bool "Set number of CAMs to use to map low memory"
861 depends on ADVANCED_OPTIONS && FSL_BOOKE
863 This option allows you to set the maximum number of CAM slots that
864 will be used to map low memory. There are a limited number of slots
865 available and even more limited number that will fit in the L1 MMU.
866 However, using more entries will allow mapping more low memory. This
867 can be useful in optimizing the layout of kernel virtual memory.
869 Say N here unless you know what you are doing.
871 config LOWMEM_CAM_NUM
873 int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL
876 config DYNAMIC_MEMSTART
877 bool "Enable page aligned dynamic load address for kernel"
878 depends on ADVANCED_OPTIONS && FLATMEM && (FSL_BOOKE || 44x)
879 select NONSTATIC_KERNEL
881 This option enables the kernel to be loaded at any page aligned
882 physical address. The kernel creates a mapping from KERNELBASE to
883 the address where the kernel is loaded. The page size here implies
884 the TLB page size of the mapping for kernel on the particular platform.
885 Please refer to the init code for finding the TLB page size.
887 DYNAMIC_MEMSTART is an easy way of implementing pseudo-RELOCATABLE
888 kernel image, where the only restriction is the page aligned kernel
889 load address. When this option is enabled, the compile time physical
890 address CONFIG_PHYSICAL_START is ignored.
892 This option is overridden by CONFIG_RELOCATABLE
895 bool "Build a relocatable kernel"
896 depends on ADVANCED_OPTIONS && FLATMEM && (44x || FSL_BOOKE)
897 select NONSTATIC_KERNEL
899 This builds a kernel image that is capable of running at the
900 location the kernel is loaded at, without any alignment restrictions.
901 This feature is a superset of DYNAMIC_MEMSTART and hence overrides it.
903 One use is for the kexec on panic case where the recovery kernel
904 must live at a different physical address than the primary
907 Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address
908 it has been loaded at and the compile time physical addresses
909 CONFIG_PHYSICAL_START is ignored. However CONFIG_PHYSICAL_START
910 setting can still be useful to bootwrappers that need to know the
911 load address of the kernel (eg. u-boot/mkimage).
913 config RELOCATABLE_PPC32
915 depends on PPC32 && RELOCATABLE
917 config PAGE_OFFSET_BOOL
918 bool "Set custom page offset address"
919 depends on ADVANCED_OPTIONS
921 This option allows you to set the kernel virtual address at which
922 the kernel will map low memory. This can be useful in optimizing
923 the virtual memory layout of the system.
925 Say N here unless you know what you are doing.
928 hex "Virtual address of memory base" if PAGE_OFFSET_BOOL
931 config KERNEL_START_BOOL
932 bool "Set custom kernel base address"
933 depends on ADVANCED_OPTIONS
935 This option allows you to set the kernel virtual address at which
936 the kernel will be loaded. Normally this should match PAGE_OFFSET
937 however there are times (like kdump) that one might not want them
940 Say N here unless you know what you are doing.
943 hex "Virtual address of kernel base" if KERNEL_START_BOOL
944 default PAGE_OFFSET if PAGE_OFFSET_BOOL
945 default "0xc2000000" if CRASH_DUMP && !NONSTATIC_KERNEL
948 config PHYSICAL_START_BOOL
949 bool "Set physical address where the kernel is loaded"
950 depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE
952 This gives the physical address where the kernel is loaded.
954 Say N here unless you know what you are doing.
956 config PHYSICAL_START
957 hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL
958 default "0x02000000" if PPC_STD_MMU && CRASH_DUMP && !NONSTATIC_KERNEL
961 config PHYSICAL_ALIGN
963 default "0x04000000" if FSL_BOOKE
965 This value puts the alignment restrictions on physical address
966 where kernel is loaded and run from. Kernel is compiled for an
967 address which meets above alignment restriction.
969 config TASK_SIZE_BOOL
970 bool "Set custom user task size"
971 depends on ADVANCED_OPTIONS
973 This option allows you to set the amount of virtual address space
974 allocated to user tasks. This can be useful in optimizing the
975 virtual memory layout of the system.
977 Say N here unless you know what you are doing.
980 hex "Size of user task space" if TASK_SIZE_BOOL
981 default "0x80000000" if PPC_8xx
984 config CONSISTENT_SIZE_BOOL
985 bool "Set custom consistent memory pool size"
986 depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
988 This option allows you to set the size of the
989 consistent memory pool. This pool of virtual memory
990 is used to make consistent memory allocations.
992 config CONSISTENT_SIZE
993 hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
994 default "0x00200000" if NOT_COHERENT_CACHE
997 bool "Pinned Kernel TLBs (860 ONLY)"
998 depends on ADVANCED_OPTIONS && 8xx
1003 bool "Build a relocatable kernel"
1004 depends on !COMPILE_TEST
1005 select NONSTATIC_KERNEL
1007 This builds a kernel image that is capable of running anywhere
1008 in the RMA (real memory area) at any 16k-aligned base address.
1009 The kernel is linked as a position-independent executable (PIE)
1010 and contains dynamic relocations which are processed early
1011 in the bootup process.
1013 One use is for the kexec on panic case where the recovery kernel
1014 must live at a different physical address than the primary
1017 # This value must have zeroes in the bottom 60 bits otherwise lots will break
1020 default "0xc000000000000000"
1023 default "0xc000000000000000"
1024 config PHYSICAL_START
1026 default "0x00000000"
1032 source "net/Kconfig"
1034 source "drivers/Kconfig"
1038 source "arch/powerpc/sysdev/qe_lib/Kconfig"
1040 source "lib/Kconfig"
1042 source "arch/powerpc/Kconfig.debug"
1044 source "security/Kconfig"
1048 depends on COMPAT && KEYS
1051 source "crypto/Kconfig"
1053 config PPC_LIB_RHEAP
1056 source "arch/powerpc/kvm/Kconfig"