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-source "arch/powerpc/platforms/Kconfig.cputype"
-
-config PPC32
- bool
- default y if !PPC64
-
-config 32BIT
- bool
- default y if PPC32
-
-config 64BIT
- bool
- default y if PPC64
-
-config WORD_SIZE
- int
- default 64 if PPC64
- default 32 if !PPC64
-
-config ARCH_PHYS_ADDR_T_64BIT
- def_bool PPC64 || PHYS_64BIT
-
-config ARCH_DMA_ADDR_T_64BIT
- def_bool ARCH_PHYS_ADDR_T_64BIT
-
-config MMU
- bool
- default y
-
-config GENERIC_CMOS_UPDATE
- def_bool y
-
-config GENERIC_TIME_VSYSCALL
- def_bool y
-
-config GENERIC_CLOCKEVENTS
- def_bool y
-
-config HAVE_SETUP_PER_CPU_AREA
- def_bool PPC64
-
-config NEED_PER_CPU_EMBED_FIRST_CHUNK
- def_bool PPC64
-
-config NR_IRQS
- int "Number of virtual interrupt numbers"
- range 32 32768
- default "512"
- help
- This defines the number of virtual interrupt numbers the kernel
- can manage. Virtual interrupt numbers are what you see in
- /proc/interrupts. If you configure your system to have too few,
- drivers will fail to load or worse - handle with care.
-
-config STACKTRACE_SUPPORT
- bool
- default y
-
-config HAVE_LATENCYTOP_SUPPORT
- def_bool y
-
-config TRACE_IRQFLAGS_SUPPORT
- bool
- default y
-
-config LOCKDEP_SUPPORT
- bool
- default y
-
-config RWSEM_GENERIC_SPINLOCK
- bool
-
-config RWSEM_XCHGADD_ALGORITHM
- bool
- default y
-
-config GENERIC_LOCKBREAK
- bool
- default y
- depends on SMP && PREEMPT
-
-config ARCH_HAS_ILOG2_U32
- bool
- default y
-
-config ARCH_HAS_ILOG2_U64
- bool
- default y if 64BIT
-
-config ARCH_HAS_CPU_IDLE_WAIT
- bool
- default y
-
-config GENERIC_HWEIGHT
- bool
- default y
-
-config GENERIC_GPIO
- bool
- help
- Generic GPIO API support
-
-config ARCH_NO_VIRT_TO_BUS
- def_bool PPC64
-
-config PPC
- bool
- default y
- select OF
- select OF_EARLY_FLATTREE
- select HAVE_FTRACE_MCOUNT_RECORD
- select HAVE_DYNAMIC_FTRACE
- select HAVE_FUNCTION_TRACER
- select HAVE_FUNCTION_GRAPH_TRACER
- select ARCH_WANT_OPTIONAL_GPIOLIB
- select HAVE_IDE
- select HAVE_IOREMAP_PROT
- select HAVE_EFFICIENT_UNALIGNED_ACCESS
- select HAVE_KPROBES
- select HAVE_ARCH_KGDB
- select HAVE_KRETPROBES
- select HAVE_ARCH_TRACEHOOK
- select HAVE_MEMBLOCK
- select HAVE_MEMBLOCK_NODE_MAP
- select HAVE_DMA_ATTRS
- select HAVE_DMA_API_DEBUG
- select USE_GENERIC_SMP_HELPERS if SMP
- select HAVE_OPROFILE
- select HAVE_SYSCALL_WRAPPERS if PPC64
- select GENERIC_ATOMIC64 if PPC32
- select HAVE_IRQ_WORK
- select HAVE_PERF_EVENTS
- select HAVE_REGS_AND_STACK_ACCESS_API
- select HAVE_HW_BREAKPOINT if PERF_EVENTS && PPC_BOOK3S_64
- select HAVE_GENERIC_HARDIRQS
- select SPARSE_IRQ
- select IRQ_PER_CPU
- select IRQ_DOMAIN
- select GENERIC_IRQ_SHOW
- select GENERIC_IRQ_SHOW_LEVEL
- select IRQ_FORCED_THREADING
- select HAVE_RCU_TABLE_FREE if SMP
- select HAVE_SYSCALL_TRACEPOINTS
- select HAVE_BPF_JIT if (PPC64 && NET)
- select HAVE_ARCH_JUMP_LABEL
- select ARCH_HAVE_NMI_SAFE_CMPXCHG
-
-config EARLY_PRINTK
- bool
- default y
-
-config COMPAT
- bool
- default y if PPC64
- select COMPAT_BINFMT_ELF
- select ARCH_WANT_OLD_COMPAT_IPC
-
-config SYSVIPC_COMPAT
- bool
- depends on COMPAT && SYSVIPC
- default y
-
-# All PPC32s use generic nvram driver through ppc_md
-config GENERIC_NVRAM
- bool
- default y if PPC32
-
-config SCHED_OMIT_FRAME_POINTER
- bool
- default y
-
-config ARCH_MAY_HAVE_PC_FDC
- bool
- default !PPC_PSERIES || PCI
-
-config PPC_OF
- def_bool y
-
-config PPC_UDBG_16550
- bool
- default n
-
-config GENERIC_TBSYNC
- bool
- default y if PPC32 && SMP
- default n
-
-config AUDIT_ARCH
- bool
- default y
-
-config GENERIC_BUG
- bool
- default y
- depends on BUG
-
-config SYS_SUPPORTS_APM_EMULATION
- default y if PMAC_APM_EMU
- bool
-
-config EPAPR_BOOT
- bool
- help
- Used to allow a board to specify it wants an ePAPR compliant wrapper.
- default n
-
-config DEFAULT_UIMAGE
- bool
- help
- Used to allow a board to specify it wants a uImage built by default
- default n
-
-config REDBOOT
- bool
-
-config ARCH_HIBERNATION_POSSIBLE
- bool
- default y
-
-config ARCH_SUSPEND_POSSIBLE
- def_bool y
- depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx || \
- (PPC_85xx && !SMP) || PPC_86xx || PPC_PSERIES || 44x || 40x
-
-config PPC_DCR_NATIVE
- bool
- default n
-
-config PPC_DCR_MMIO
- bool
- default n
-
-config PPC_DCR
- bool
- depends on PPC_DCR_NATIVE || PPC_DCR_MMIO
- default y
-
-config PPC_OF_PLATFORM_PCI
- bool
- depends on PCI
- depends on PPC64 # not supported on 32 bits yet
- default n
-
-config ARCH_SUPPORTS_DEBUG_PAGEALLOC
- def_bool y
-
-config PPC_ADV_DEBUG_REGS
- bool
- depends on 40x || BOOKE
- default y
-
-config PPC_ADV_DEBUG_IACS
- int
- depends on PPC_ADV_DEBUG_REGS
- default 4 if 44x
- default 2
-
-config PPC_ADV_DEBUG_DACS
- int
- depends on PPC_ADV_DEBUG_REGS
- default 2
-
-config PPC_ADV_DEBUG_DVCS
- int
- depends on PPC_ADV_DEBUG_REGS
- default 2 if 44x
- default 0
-
-config PPC_ADV_DEBUG_DAC_RANGE
- bool
- depends on PPC_ADV_DEBUG_REGS && 44x
- default y
-
-source "init/Kconfig"
-
-source "kernel/Kconfig.freezer"
-
-source "arch/powerpc/sysdev/Kconfig"
-source "arch/powerpc/platforms/Kconfig"
-
-menu "Kernel options"
-
-config HIGHMEM
- bool "High memory support"
- depends on PPC32
-
-source kernel/time/Kconfig
-source kernel/Kconfig.hz
-source kernel/Kconfig.preempt
-source "fs/Kconfig.binfmt"
-
-config HUGETLB_PAGE_SIZE_VARIABLE
- bool
- depends on HUGETLB_PAGE
- default y
-
-config MATH_EMULATION
- bool "Math emulation"
- depends on 4xx || 8xx || E200 || PPC_MPC832x || E500
- ---help---
- Some PowerPC chips designed for embedded applications do not have
- a floating-point unit and therefore do not implement the
- floating-point instructions in the PowerPC instruction set. If you
- say Y here, the kernel will include code to emulate a floating-point
- unit, which will allow programs that use floating-point
- instructions to run.
-
-config 8XX_MINIMAL_FPEMU
- bool "Minimal math emulation for 8xx"
- depends on 8xx && !MATH_EMULATION
- help
- Older arch/ppc kernels still emulated a few floating point
- instructions such as load and store, even when full math
- emulation is disabled. Say "Y" here if you want to preserve
- this behavior.
-
- It is recommended that you build a soft-float userspace instead.
-
-config IOMMU_HELPER
- def_bool PPC64
-
-config SWIOTLB
- bool "SWIOTLB support"
- default n
- select IOMMU_HELPER
- ---help---
- Support for IO bounce buffering for systems without an IOMMU.
- This allows us to DMA to the full physical address space on
- platforms where the size of a physical address is larger
- than the bus address. Not all platforms support this.
-
-config HOTPLUG_CPU
- bool "Support for enabling/disabling CPUs"
- depends on SMP && HOTPLUG && EXPERIMENTAL && (PPC_PSERIES || PPC_PMAC || PPC_POWERNV)
- ---help---
- Say Y here to be able to disable and re-enable individual
- CPUs at runtime on SMP machines.
-
- Say N if you are unsure.
-
-config ARCH_CPU_PROBE_RELEASE
- def_bool y
- depends on HOTPLUG_CPU
-
-config ARCH_ENABLE_MEMORY_HOTPLUG
- def_bool y
-
-config ARCH_HAS_WALK_MEMORY
- def_bool y
-
-config ARCH_ENABLE_MEMORY_HOTREMOVE
- def_bool y
-
-config KEXEC
- bool "kexec system call (EXPERIMENTAL)"
- depends on (PPC_BOOK3S || FSL_BOOKE || (44x && !SMP && !PPC_47x)) && EXPERIMENTAL
- help
- kexec is a system call that implements the ability to shutdown your
- current kernel, and to start another kernel. It is like a reboot
- but it is independent of the system firmware. And like a reboot
- you can start any kernel with it, not just Linux.
-
- The name comes from the similarity to the exec system call.
-
- It is an ongoing process to be certain the hardware in a machine
- is properly shutdown, so do not be surprised if this code does not
- initially work for you. It may help to enable device hotplugging
- support. As of this writing the exact hardware interface is
- strongly in flux, so no good recommendation can be made.
-
-config CRASH_DUMP
- bool "Build a kdump crash kernel"
- depends on PPC64 || 6xx || FSL_BOOKE || (44x && !SMP && !PPC_47x)
- select RELOCATABLE if PPC64 || 44x
- select DYNAMIC_MEMSTART if FSL_BOOKE
- help
- Build a kernel suitable for use as a kdump capture kernel.
- The same kernel binary can be used as production kernel and dump
- capture kernel.
-
-config FA_DUMP
- bool "Firmware-assisted dump"
- depends on PPC64 && PPC_RTAS && CRASH_DUMP
- help
- A robust mechanism to get reliable kernel crash dump with
- assistance from firmware. This approach does not use kexec,
- instead firmware assists in booting the kdump kernel
- while preserving memory contents. Firmware-assisted dump
- is meant to be a kdump replacement offering robustness and
- speed not possible without system firmware assistance.
-
- If unsure, say "N"
-
-config IRQ_ALL_CPUS
- bool "Distribute interrupts on all CPUs by default"
- depends on SMP && !MV64360
- help
- This option gives the kernel permission to distribute IRQs across
- multiple CPUs. Saying N here will route all IRQs to the first
- CPU. Generally saying Y is safe, although some problems have been
- reported with SMP Power Macintoshes with this option enabled.
-
-config NUMA
- bool "NUMA support"
- depends on PPC64
- default y if SMP && PPC_PSERIES
-
-config NODES_SHIFT
- int
- default "8" if PPC64
- default "4"
- depends on NEED_MULTIPLE_NODES
-
-config MAX_ACTIVE_REGIONS
- int
- default "256" if PPC64
- default "32"
-
-config ARCH_SELECT_MEMORY_MODEL
- def_bool y
- depends on PPC64
-
-config ARCH_FLATMEM_ENABLE
- def_bool y
- depends on (PPC64 && !NUMA) || PPC32
-
-config ARCH_SPARSEMEM_ENABLE
- def_bool y
- depends on PPC64
- select SPARSEMEM_VMEMMAP_ENABLE
-
-config ARCH_SPARSEMEM_DEFAULT
- def_bool y
- depends on (SMP && PPC_PSERIES) || PPC_PS3
-
-config SYS_SUPPORTS_HUGETLBFS
- bool
-
-source "mm/Kconfig"
-
-config ARCH_MEMORY_PROBE
- def_bool y
- depends on MEMORY_HOTPLUG
-
-# Some NUMA nodes have memory ranges that span
-# other nodes. Even though a pfn is valid and
-# between a node's start and end pfns, it may not
-# reside on that node. See memmap_init_zone()
-# for details.
-config NODES_SPAN_OTHER_NODES
- def_bool y
- depends on NEED_MULTIPLE_NODES
-
-config PPC_HAS_HASH_64K
- bool
- depends on PPC64
- default n
-
-config STDBINUTILS
- bool "Using standard binutils settings"
- depends on 44x
- default y
- help
- Turning this option off allows you to select 256KB PAGE_SIZE on 44x.
- Note, that kernel will be able to run only those applications,
- which had been compiled using binutils later than 2.17.50.0.3 with
- '-zmax-page-size' set to 256K (the default is 64K). Or, if using
- the older binutils, you can patch them with a trivial patch, which
- changes the ELF_MAXPAGESIZE definition from 0x10000 to 0x40000.
-
-choice
- prompt "Page size"
- default PPC_4K_PAGES
- help
- Select the kernel logical page size. Increasing the page size
- will reduce software overhead at each page boundary, allow
- hardware prefetch mechanisms to be more effective, and allow
- larger dma transfers increasing IO efficiency and reducing
- overhead. However the utilization of memory will increase.
- For example, each cached file will using a multiple of the
- page size to hold its contents and the difference between the
- end of file and the end of page is wasted.
-
- Some dedicated systems, such as software raid serving with
- accelerated calculations, have shown significant increases.
-
- If you configure a 64 bit kernel for 64k pages but the
- processor does not support them, then the kernel will simulate
- them with 4k pages, loading them on demand, but with the
- reduced software overhead and larger internal fragmentation.
- For the 32 bit kernel, a large page option will not be offered
- unless it is supported by the configured processor.
-
- If unsure, choose 4K_PAGES.
-
-config PPC_4K_PAGES
- bool "4k page size"
-
-config PPC_16K_PAGES
- bool "16k page size" if 44x
-
-config PPC_64K_PAGES
- bool "64k page size" if 44x || PPC_STD_MMU_64 || PPC_BOOK3E_64
- select PPC_HAS_HASH_64K if PPC_STD_MMU_64
-
-config PPC_256K_PAGES
- bool "256k page size" if 44x
- depends on !STDBINUTILS
- help
- Make the page size 256k.
-
- As the ELF standard only requires alignment to support page
- sizes up to 64k, you will need to compile all of your user
- space applications with a non-standard binutils settings
- (see the STDBINUTILS description for details).
-
- Say N unless you know what you are doing.
-
-endchoice
-
-config FORCE_MAX_ZONEORDER
- int "Maximum zone order"
- range 9 64 if PPC64 && PPC_64K_PAGES
- default "9" if PPC64 && PPC_64K_PAGES
- range 13 64 if PPC64 && !PPC_64K_PAGES
- default "13" if PPC64 && !PPC_64K_PAGES
- range 9 64 if PPC32 && PPC_16K_PAGES
- default "9" if PPC32 && PPC_16K_PAGES
- range 7 64 if PPC32 && PPC_64K_PAGES
- default "7" if PPC32 && PPC_64K_PAGES
- range 5 64 if PPC32 && PPC_256K_PAGES
- default "5" if PPC32 && PPC_256K_PAGES
- range 11 64
- default "11"
- help
- The kernel memory allocator divides physically contiguous memory
- blocks into "zones", where each zone is a power of two number of
- pages. This option selects the largest power of two that the kernel
- keeps in the memory allocator. If you need to allocate very large
- blocks of physically contiguous memory, then you may need to
- increase this value.
-
- This config option is actually maximum order plus one. For example,
- a value of 11 means that the largest free memory block is 2^10 pages.
-
- The page size is not necessarily 4KB. For example, on 64-bit
- systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES. Keep
- this in mind when choosing a value for this option.
-
-config PPC_SUBPAGE_PROT
- bool "Support setting protections for 4k subpages"
- depends on PPC_STD_MMU_64 && PPC_64K_PAGES
- help
- This option adds support for a system call to allow user programs
- to set access permissions (read/write, readonly, or no access)
- on the 4k subpages of each 64k page.
-
-config SCHED_SMT
- bool "SMT (Hyperthreading) scheduler support"
- depends on PPC64 && SMP
- help
- SMT scheduler support improves the CPU scheduler's decision making
- when dealing with POWER5 cpus at a cost of slightly increased
- overhead in some places. If unsure say N here.
-
-config CMDLINE_BOOL
- bool "Default bootloader kernel arguments"
-
-config CMDLINE
- string "Initial kernel command string"
- depends on CMDLINE_BOOL
- default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
- help
- On some platforms, there is currently no way for the boot loader to
- pass arguments to the kernel. For these platforms, you can supply
- some command-line options at build time by entering them here. In
- most cases you will need to specify the root device here.
-
-config EXTRA_TARGETS
- string "Additional default image types"
- help
- List additional targets to be built by the bootwrapper here (separated
- by spaces). This is useful for targets that depend of device tree
- files in the .dts directory.
-
- Targets in this list will be build as part of the default build
- target, or when the user does a 'make zImage' or a
- 'make zImage.initrd'.
-
- If unsure, leave blank
-
-config ARCH_WANTS_FREEZER_CONTROL
- def_bool y
- depends on ADB_PMU
-
-source kernel/power/Kconfig
-
-config SECCOMP
- bool "Enable seccomp to safely compute untrusted bytecode"
- depends on PROC_FS
- default y
- help
- This kernel feature is useful for number crunching applications
- that may need to compute untrusted bytecode during their
- execution. By using pipes or other transports made available to
- the process as file descriptors supporting the read/write
- syscalls, it's possible to isolate those applications in
- their own address space using seccomp. Once seccomp is
- enabled via /proc/<pid>/seccomp, it cannot be disabled
- and the task is only allowed to execute a few safe syscalls
- defined by each seccomp mode.
-
- If unsure, say Y. Only embedded should say N here.
-
-endmenu
-
-config ISA_DMA_API
- bool
- default PCI
-
-menu "Bus options"
-
-config ISA
- bool "Support for ISA-bus hardware"
- depends on PPC_PREP || PPC_CHRP
- select PPC_I8259
- help
- Find out whether you have ISA slots on your motherboard. ISA is the
- name of a bus system, i.e. the way the CPU talks to the other stuff
- inside your box. If you have an Apple machine, say N here; if you
- have an IBM RS/6000 or pSeries machine or a PReP machine, say Y. If
- you have an embedded board, consult your board documentation.
-
-config ZONE_DMA
- bool
- default y
-
-config NEED_DMA_MAP_STATE
- def_bool (PPC64 || NOT_COHERENT_CACHE)
-
-config NEED_SG_DMA_LENGTH
- def_bool y
-
-config GENERIC_ISA_DMA
- bool
- depends on ISA_DMA_API
- default y
-
-config PPC_INDIRECT_PCI
- bool
- depends on PCI
- default y if 40x || 44x
- default n
-
-config EISA
- bool
-
-config SBUS
- bool
-
-config FSL_SOC
- bool
- select HAVE_CAN_FLEXCAN if NET && CAN
- select PPC_CLOCK if CAN_FLEXCAN
-
-config FSL_PCI
- bool
- select PPC_INDIRECT_PCI
- select PCI_QUIRKS
-
-config FSL_PMC
- bool
- default y
- depends on SUSPEND && (PPC_85xx || PPC_86xx)
- help
- Freescale MPC85xx/MPC86xx power management controller support
- (suspend/resume). For MPC83xx see platforms/83xx/suspend.c
-
-config PPC4xx_CPM
- bool
- default y
- depends on SUSPEND && (44x || 40x)
- help
- PPC4xx Clock Power Management (CPM) support (suspend/resume).
- It also enables support for two different idle states (idle-wait
- and idle-doze).
-
-config 4xx_SOC
- bool
-
-config FSL_LBC
- bool "Freescale Local Bus support"
- depends on FSL_SOC
- help
- Enables reporting of errors from the Freescale local bus
- controller. Also contains some common code used by
- drivers for specific local bus peripherals.
-
-config FSL_IFC
- bool
- depends on FSL_SOC
-
-config FSL_GTM
- bool
- depends on PPC_83xx || QUICC_ENGINE || CPM2
- help
- Freescale General-purpose Timers support
-
-# Yes MCA RS/6000s exist but Linux-PPC does not currently support any
-config MCA
- bool
-
-# Platforms that what PCI turned unconditionally just do select PCI
-# in their config node. Platforms that want to choose at config
-# time should select PPC_PCI_CHOICE
-config PPC_PCI_CHOICE
- bool
-
-config PCI
- bool "PCI support" if PPC_PCI_CHOICE
- default y if !40x && !CPM2 && !8xx && !PPC_83xx \
- && !PPC_85xx && !PPC_86xx && !GAMECUBE_COMMON
- default PCI_PERMEDIA if !4xx && !CPM2 && !8xx
- default PCI_QSPAN if !4xx && !CPM2 && 8xx
- select ARCH_SUPPORTS_MSI
- select GENERIC_PCI_IOMAP
- help
- Find out whether your system includes a PCI bus. PCI is the name of
- a bus system, i.e. the way the CPU talks to the other stuff inside
- your box. If you say Y here, the kernel will include drivers and
- infrastructure code to support PCI bus devices.
-
-config PCI_DOMAINS
- def_bool PCI
-
-config PCI_SYSCALL
- def_bool PCI
-
-config PCI_QSPAN
- bool "QSpan PCI"
- depends on !4xx && !CPM2 && 8xx
- select PPC_I8259
- help
- Say Y here if you have a system based on a Motorola 8xx-series
- embedded processor with a QSPAN PCI interface, otherwise say N.
-
-config PCI_8260
- bool
- depends on PCI && 8260
- select PPC_INDIRECT_PCI
- default y
-
-config 8260_PCI9
- bool "Enable workaround for MPC826x erratum PCI 9"
- depends on PCI_8260 && !8272
- default y
-
-source "drivers/pci/pcie/Kconfig"
-
-source "drivers/pci/Kconfig"
-
-source "drivers/pcmcia/Kconfig"
-
-source "drivers/pci/hotplug/Kconfig"
-
-config HAS_RAPIDIO
- bool
- default n
-
-config RAPIDIO
- bool "RapidIO support"
- depends on HAS_RAPIDIO || PCI
- help
- If you say Y here, the kernel will include drivers and
- infrastructure code to support RapidIO interconnect devices.
-
-config FSL_RIO
- bool "Freescale Embedded SRIO Controller support"
- depends on RAPIDIO && HAS_RAPIDIO
- default "n"
- ---help---
- Include support for RapidIO controller on Freescale embedded
- processors (MPC8548, MPC8641, etc).
-
-source "drivers/rapidio/Kconfig"
-
-endmenu
-
-config NONSTATIC_KERNEL
- bool
- default n
-
-menu "Advanced setup"
- depends on PPC32
-
-config ADVANCED_OPTIONS
- bool "Prompt for advanced kernel configuration options"
- help
- This option will enable prompting for a variety of advanced kernel
- configuration options. These options can cause the kernel to not
- work if they are set incorrectly, but can be used to optimize certain
- aspects of kernel memory management.
-
- Unless you know what you are doing, say N here.
-
-comment "Default settings for advanced configuration options are used"
- depends on !ADVANCED_OPTIONS
-
-config LOWMEM_SIZE_BOOL
- bool "Set maximum low memory"
- depends on ADVANCED_OPTIONS
- help
- This option allows you to set the maximum amount of memory which
- will be used as "low memory", that is, memory which the kernel can
- access directly, without having to set up a kernel virtual mapping.
- This can be useful in optimizing the layout of kernel virtual
- memory.
-
- Say N here unless you know what you are doing.
-
-config LOWMEM_SIZE
- hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
- default "0x30000000"
-
-config LOWMEM_CAM_NUM_BOOL
- bool "Set number of CAMs to use to map low memory"
- depends on ADVANCED_OPTIONS && FSL_BOOKE
- help
- This option allows you to set the maximum number of CAM slots that
- will be used to map low memory. There are a limited number of slots
- available and even more limited number that will fit in the L1 MMU.
- However, using more entries will allow mapping more low memory. This
- can be useful in optimizing the layout of kernel virtual memory.
-
- Say N here unless you know what you are doing.
-
-config LOWMEM_CAM_NUM
- depends on FSL_BOOKE
- int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL
- default 3
-
-config DYNAMIC_MEMSTART
- bool "Enable page aligned dynamic load address for kernel (EXPERIMENTAL)"
- depends on EXPERIMENTAL && ADVANCED_OPTIONS && FLATMEM && (FSL_BOOKE || 44x)
- select NONSTATIC_KERNEL
- help
- This option enables the kernel to be loaded at any page aligned
- physical address. The kernel creates a mapping from KERNELBASE to
- the address where the kernel is loaded. The page size here implies
- the TLB page size of the mapping for kernel on the particular platform.
- Please refer to the init code for finding the TLB page size.
-
- DYNAMIC_MEMSTART is an easy way of implementing pseudo-RELOCATABLE
- kernel image, where the only restriction is the page aligned kernel
- load address. When this option is enabled, the compile time physical
- address CONFIG_PHYSICAL_START is ignored.
-
- This option is overridden by CONFIG_RELOCATABLE
-
-config RELOCATABLE
- bool "Build a relocatable kernel (EXPERIMENTAL)"
- depends on EXPERIMENTAL && ADVANCED_OPTIONS && FLATMEM && 44x
- select NONSTATIC_KERNEL
- help
- This builds a kernel image that is capable of running at the
- location the kernel is loaded at, without any alignment restrictions.
- This feature is a superset of DYNAMIC_MEMSTART and hence overrides it.
-
- One use is for the kexec on panic case where the recovery kernel
- must live at a different physical address than the primary
- kernel.
-
- Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address
- it has been loaded at and the compile time physical addresses
- CONFIG_PHYSICAL_START is ignored. However CONFIG_PHYSICAL_START
- setting can still be useful to bootwrappers that need to know the
- load address of the kernel (eg. u-boot/mkimage).
-
-config RELOCATABLE_PPC32
- def_bool y
- depends on PPC32 && RELOCATABLE
-
-config PAGE_OFFSET_BOOL
- bool "Set custom page offset address"
- depends on ADVANCED_OPTIONS
- help
- This option allows you to set the kernel virtual address at which
- the kernel will map low memory. This can be useful in optimizing
- the virtual memory layout of the system.
-
- Say N here unless you know what you are doing.
-
-config PAGE_OFFSET
- hex "Virtual address of memory base" if PAGE_OFFSET_BOOL
- default "0xc0000000"
-
-config KERNEL_START_BOOL
- bool "Set custom kernel base address"
- depends on ADVANCED_OPTIONS
- help
- This option allows you to set the kernel virtual address at which
- the kernel will be loaded. Normally this should match PAGE_OFFSET
- however there are times (like kdump) that one might not want them
- to be the same.
-
- Say N here unless you know what you are doing.
-
-config KERNEL_START
- hex "Virtual address of kernel base" if KERNEL_START_BOOL
- default PAGE_OFFSET if PAGE_OFFSET_BOOL
- default "0xc2000000" if CRASH_DUMP && !NONSTATIC_KERNEL
- default "0xc0000000"
-
-config PHYSICAL_START_BOOL
- bool "Set physical address where the kernel is loaded"
- depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE
- help
- This gives the physical address where the kernel is loaded.
-
- Say N here unless you know what you are doing.
-
-config PHYSICAL_START
- hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL
- default "0x02000000" if PPC_STD_MMU && CRASH_DUMP && !NONSTATIC_KERNEL
- default "0x00000000"
-
-config PHYSICAL_ALIGN
- hex
- default "0x04000000" if FSL_BOOKE
- help
- This value puts the alignment restrictions on physical address
- where kernel is loaded and run from. Kernel is compiled for an
- address which meets above alignment restriction.
-
-config TASK_SIZE_BOOL
- bool "Set custom user task size"
- depends on ADVANCED_OPTIONS
- help
- This option allows you to set the amount of virtual address space
- allocated to user tasks. This can be useful in optimizing the
- virtual memory layout of the system.
-
- Say N here unless you know what you are doing.
-
-config TASK_SIZE
- hex "Size of user task space" if TASK_SIZE_BOOL
- default "0x80000000" if PPC_PREP || PPC_8xx
- default "0xc0000000"
-
-config CONSISTENT_SIZE_BOOL
- bool "Set custom consistent memory pool size"
- depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
- help
- This option allows you to set the size of the
- consistent memory pool. This pool of virtual memory
- is used to make consistent memory allocations.
-
-config CONSISTENT_SIZE
- hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
- default "0x00200000" if NOT_COHERENT_CACHE
-
-config PIN_TLB
- bool "Pinned Kernel TLBs (860 ONLY)"
- depends on ADVANCED_OPTIONS && 8xx
-endmenu
-
-if PPC64
-config RELOCATABLE
- bool "Build a relocatable kernel"
- select NONSTATIC_KERNEL
- help
- This builds a kernel image that is capable of running anywhere
- in the RMA (real memory area) at any 16k-aligned base address.
- The kernel is linked as a position-independent executable (PIE)
- and contains dynamic relocations which are processed early
- in the bootup process.
-
- One use is for the kexec on panic case where the recovery kernel
- must live at a different physical address than the primary
- kernel.
-
-config PAGE_OFFSET
- hex
- default "0xc000000000000000"
-config KERNEL_START
- hex
- default "0xc000000000000000"
-config PHYSICAL_START
- hex
- default "0x00000000"
-endif
-
-source "net/Kconfig"
-
-source "drivers/Kconfig"
-
-source "fs/Kconfig"
-
-source "arch/powerpc/sysdev/qe_lib/Kconfig"
-
-source "lib/Kconfig"
-
-source "arch/powerpc/Kconfig.debug"
-
-source "security/Kconfig"
-
-config KEYS_COMPAT
- bool
- depends on COMPAT && KEYS
- default y
-
-source "crypto/Kconfig"
-
-config PPC_CLOCK
- bool
- default n
- select HAVE_CLK
-
-config PPC_LIB_RHEAP
- bool
-
-source "arch/powerpc/kvm/Kconfig"