1036 lines
27 KiB
Text
1036 lines
27 KiB
Text
source "arch/powerpc/platforms/Kconfig.cputype"
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config PPC32
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bool
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default y if !PPC64
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config 32BIT
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bool
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default y if PPC32
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config 64BIT
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bool
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default y if PPC64
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config WORD_SIZE
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int
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default 64 if PPC64
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default 32 if !PPC64
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config ARCH_PHYS_ADDR_T_64BIT
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def_bool PPC64 || PHYS_64BIT
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config ARCH_DMA_ADDR_T_64BIT
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def_bool ARCH_PHYS_ADDR_T_64BIT
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config MMU
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bool
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default y
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config HAVE_SETUP_PER_CPU_AREA
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def_bool PPC64
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config NEED_PER_CPU_EMBED_FIRST_CHUNK
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def_bool PPC64
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config NR_IRQS
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int "Number of virtual interrupt numbers"
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range 32 32768
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default "512"
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help
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This defines the number of virtual interrupt numbers the kernel
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can manage. Virtual interrupt numbers are what you see in
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/proc/interrupts. If you configure your system to have too few,
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drivers will fail to load or worse - handle with care.
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config STACKTRACE_SUPPORT
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bool
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default y
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config HAVE_LATENCYTOP_SUPPORT
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def_bool y
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config TRACE_IRQFLAGS_SUPPORT
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bool
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default y
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config LOCKDEP_SUPPORT
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bool
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default y
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config RWSEM_GENERIC_SPINLOCK
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bool
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config RWSEM_XCHGADD_ALGORITHM
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bool
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default y
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config GENERIC_LOCKBREAK
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bool
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default y
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depends on SMP && PREEMPT
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config ARCH_HAS_ILOG2_U32
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bool
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default y
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config ARCH_HAS_ILOG2_U64
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bool
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default y if 64BIT
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config GENERIC_HWEIGHT
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bool
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default y
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config GENERIC_GPIO
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bool
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help
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Generic GPIO API support
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config ARCH_NO_VIRT_TO_BUS
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def_bool PPC64
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config PPC
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bool
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default y
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select OF
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select OF_EARLY_FLATTREE
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select HAVE_FTRACE_MCOUNT_RECORD
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select HAVE_DYNAMIC_FTRACE
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select HAVE_FUNCTION_TRACER
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select HAVE_FUNCTION_GRAPH_TRACER
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select SYSCTL_EXCEPTION_TRACE
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select ARCH_WANT_OPTIONAL_GPIOLIB
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select HAVE_IDE
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select HAVE_IOREMAP_PROT
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select HAVE_EFFICIENT_UNALIGNED_ACCESS
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select HAVE_KPROBES
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select HAVE_ARCH_KGDB
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select HAVE_KRETPROBES
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select HAVE_ARCH_TRACEHOOK
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select HAVE_MEMBLOCK
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select HAVE_MEMBLOCK_NODE_MAP
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select HAVE_DMA_ATTRS
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select HAVE_DMA_API_DEBUG
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select USE_GENERIC_SMP_HELPERS if SMP
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select HAVE_OPROFILE
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select HAVE_DEBUG_KMEMLEAK
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select HAVE_SYSCALL_WRAPPERS if PPC64
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select GENERIC_ATOMIC64 if PPC32
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select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
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select HAVE_IRQ_WORK
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select HAVE_PERF_EVENTS
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select HAVE_REGS_AND_STACK_ACCESS_API
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select HAVE_HW_BREAKPOINT if PERF_EVENTS && PPC_BOOK3S_64
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select HAVE_GENERIC_HARDIRQS
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select ARCH_WANT_IPC_PARSE_VERSION
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select SPARSE_IRQ
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select IRQ_PER_CPU
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select IRQ_DOMAIN
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select GENERIC_IRQ_SHOW
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select GENERIC_IRQ_SHOW_LEVEL
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select IRQ_FORCED_THREADING
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select HAVE_RCU_TABLE_FREE if SMP
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select HAVE_SYSCALL_TRACEPOINTS
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select HAVE_BPF_JIT if PPC64
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select HAVE_ARCH_JUMP_LABEL
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select ARCH_HAVE_NMI_SAFE_CMPXCHG
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select GENERIC_SMP_IDLE_THREAD
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select GENERIC_CMOS_UPDATE
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select GENERIC_TIME_VSYSCALL_OLD
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select GENERIC_CLOCKEVENTS
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select GENERIC_STRNCPY_FROM_USER
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select GENERIC_STRNLEN_USER
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select GENERIC_KERNEL_THREAD
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select HAVE_MOD_ARCH_SPECIFIC
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select MODULES_USE_ELF_RELA
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select GENERIC_KERNEL_EXECVE
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select CLONE_BACKWARDS
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config EARLY_PRINTK
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bool
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default y
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config COMPAT
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bool
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default y if PPC64
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select COMPAT_BINFMT_ELF
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select ARCH_WANT_OLD_COMPAT_IPC
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config SYSVIPC_COMPAT
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bool
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depends on COMPAT && SYSVIPC
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default y
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# All PPC32s use generic nvram driver through ppc_md
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config GENERIC_NVRAM
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bool
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default y if PPC32
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config SCHED_OMIT_FRAME_POINTER
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bool
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default y
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config ARCH_MAY_HAVE_PC_FDC
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bool
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default !PPC_PSERIES || PCI
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config PPC_OF
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def_bool y
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config PPC_UDBG_16550
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bool
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default n
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config GENERIC_TBSYNC
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bool
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default y if PPC32 && SMP
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default n
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config AUDIT_ARCH
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bool
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default y
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config GENERIC_BUG
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bool
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default y
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depends on BUG
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config SYS_SUPPORTS_APM_EMULATION
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default y if PMAC_APM_EMU
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bool
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config EPAPR_BOOT
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bool
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help
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Used to allow a board to specify it wants an ePAPR compliant wrapper.
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default n
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config DEFAULT_UIMAGE
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bool
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help
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Used to allow a board to specify it wants a uImage built by default
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default n
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config REDBOOT
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bool
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config ARCH_HIBERNATION_POSSIBLE
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bool
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default y
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config ARCH_SUSPEND_POSSIBLE
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def_bool y
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depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx || \
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(PPC_85xx && !PPC_E500MC) || PPC_86xx || PPC_PSERIES \
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|| 44x || 40x
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config PPC_DCR_NATIVE
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bool
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default n
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config PPC_DCR_MMIO
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bool
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default n
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config PPC_DCR
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bool
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depends on PPC_DCR_NATIVE || PPC_DCR_MMIO
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default y
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config PPC_OF_PLATFORM_PCI
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bool
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depends on PCI
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depends on PPC64 # not supported on 32 bits yet
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default n
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config ARCH_SUPPORTS_DEBUG_PAGEALLOC
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def_bool y
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config ARCH_SUPPORTS_UPROBES
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def_bool y
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config PPC_ADV_DEBUG_REGS
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bool
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depends on 40x || BOOKE
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default y
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config PPC_ADV_DEBUG_IACS
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int
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depends on PPC_ADV_DEBUG_REGS
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default 4 if 44x
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default 2
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config PPC_ADV_DEBUG_DACS
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int
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depends on PPC_ADV_DEBUG_REGS
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default 2
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config PPC_ADV_DEBUG_DVCS
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int
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depends on PPC_ADV_DEBUG_REGS
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default 2 if 44x
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default 0
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config PPC_ADV_DEBUG_DAC_RANGE
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bool
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depends on PPC_ADV_DEBUG_REGS && 44x
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default y
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source "init/Kconfig"
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source "kernel/Kconfig.freezer"
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source "arch/powerpc/sysdev/Kconfig"
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source "arch/powerpc/platforms/Kconfig"
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menu "Kernel options"
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config HIGHMEM
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bool "High memory support"
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depends on PPC32
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source kernel/Kconfig.hz
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source kernel/Kconfig.preempt
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source "fs/Kconfig.binfmt"
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config HUGETLB_PAGE_SIZE_VARIABLE
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bool
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depends on HUGETLB_PAGE
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default y
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config MATH_EMULATION
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bool "Math emulation"
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depends on 4xx || 8xx || E200 || PPC_MPC832x || E500
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---help---
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Some PowerPC chips designed for embedded applications do not have
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a floating-point unit and therefore do not implement the
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floating-point instructions in the PowerPC instruction set. If you
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say Y here, the kernel will include code to emulate a floating-point
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unit, which will allow programs that use floating-point
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instructions to run.
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config 8XX_MINIMAL_FPEMU
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bool "Minimal math emulation for 8xx"
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depends on 8xx && !MATH_EMULATION
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help
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Older arch/ppc kernels still emulated a few floating point
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instructions such as load and store, even when full math
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emulation is disabled. Say "Y" here if you want to preserve
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this behavior.
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It is recommended that you build a soft-float userspace instead.
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config IOMMU_HELPER
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def_bool PPC64
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config SWIOTLB
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bool "SWIOTLB support"
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default n
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select IOMMU_HELPER
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---help---
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Support for IO bounce buffering for systems without an IOMMU.
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This allows us to DMA to the full physical address space on
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platforms where the size of a physical address is larger
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than the bus address. Not all platforms support this.
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config HOTPLUG_CPU
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bool "Support for enabling/disabling CPUs"
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depends on SMP && HOTPLUG && EXPERIMENTAL && (PPC_PSERIES || \
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PPC_PMAC || PPC_POWERNV || (PPC_85xx && !PPC_E500MC))
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---help---
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Say Y here to be able to disable and re-enable individual
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CPUs at runtime on SMP machines.
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Say N if you are unsure.
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config ARCH_CPU_PROBE_RELEASE
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def_bool y
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depends on HOTPLUG_CPU
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config ARCH_ENABLE_MEMORY_HOTPLUG
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def_bool y
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config ARCH_HAS_WALK_MEMORY
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def_bool y
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config ARCH_ENABLE_MEMORY_HOTREMOVE
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def_bool y
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config KEXEC
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bool "kexec system call (EXPERIMENTAL)"
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depends on (PPC_BOOK3S || FSL_BOOKE || (44x && !SMP)) && EXPERIMENTAL
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help
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kexec is a system call that implements the ability to shutdown your
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current kernel, and to start another kernel. It is like a reboot
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but it is independent of the system firmware. And like a reboot
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you can start any kernel with it, not just Linux.
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The name comes from the similarity to the exec system call.
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It is an ongoing process to be certain the hardware in a machine
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is properly shutdown, so do not be surprised if this code does not
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initially work for you. It may help to enable device hotplugging
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support. As of this writing the exact hardware interface is
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strongly in flux, so no good recommendation can be made.
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config CRASH_DUMP
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bool "Build a kdump crash kernel"
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depends on PPC64 || 6xx || FSL_BOOKE || (44x && !SMP)
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select RELOCATABLE if PPC64 || 44x
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select DYNAMIC_MEMSTART if FSL_BOOKE
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help
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Build a kernel suitable for use as a kdump capture kernel.
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The same kernel binary can be used as production kernel and dump
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capture kernel.
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config FA_DUMP
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bool "Firmware-assisted dump"
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depends on PPC64 && PPC_RTAS && CRASH_DUMP
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help
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A robust mechanism to get reliable kernel crash dump with
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assistance from firmware. This approach does not use kexec,
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instead firmware assists in booting the kdump kernel
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while preserving memory contents. Firmware-assisted dump
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is meant to be a kdump replacement offering robustness and
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speed not possible without system firmware assistance.
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If unsure, say "N"
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config IRQ_ALL_CPUS
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bool "Distribute interrupts on all CPUs by default"
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depends on SMP && !MV64360
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help
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This option gives the kernel permission to distribute IRQs across
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multiple CPUs. Saying N here will route all IRQs to the first
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CPU. Generally saying Y is safe, although some problems have been
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reported with SMP Power Macintoshes with this option enabled.
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config NUMA
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bool "NUMA support"
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depends on PPC64
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default y if SMP && PPC_PSERIES
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config NODES_SHIFT
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int
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default "8" if PPC64
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default "4"
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depends on NEED_MULTIPLE_NODES
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config MAX_ACTIVE_REGIONS
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int
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default "256" if PPC64
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default "32"
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config ARCH_SELECT_MEMORY_MODEL
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def_bool y
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depends on PPC64
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config ARCH_FLATMEM_ENABLE
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def_bool y
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depends on (PPC64 && !NUMA) || PPC32
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config ARCH_SPARSEMEM_ENABLE
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def_bool y
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depends on PPC64
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select SPARSEMEM_VMEMMAP_ENABLE
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config ARCH_SPARSEMEM_DEFAULT
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def_bool y
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depends on (SMP && PPC_PSERIES) || PPC_PS3
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config SYS_SUPPORTS_HUGETLBFS
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bool
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source "mm/Kconfig"
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config ARCH_MEMORY_PROBE
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def_bool y
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depends on MEMORY_HOTPLUG
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# Some NUMA nodes have memory ranges that span
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# other nodes. Even though a pfn is valid and
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# between a node's start and end pfns, it may not
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# reside on that node. See memmap_init_zone()
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# for details.
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config NODES_SPAN_OTHER_NODES
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def_bool y
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depends on NEED_MULTIPLE_NODES
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config PPC_HAS_HASH_64K
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bool
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depends on PPC64
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default n
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config STDBINUTILS
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bool "Using standard binutils settings"
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depends on 44x
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default y
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help
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Turning this option off allows you to select 256KB PAGE_SIZE on 44x.
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Note, that kernel will be able to run only those applications,
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which had been compiled using binutils later than 2.17.50.0.3 with
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'-zmax-page-size' set to 256K (the default is 64K). Or, if using
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the older binutils, you can patch them with a trivial patch, which
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changes the ELF_MAXPAGESIZE definition from 0x10000 to 0x40000.
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choice
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prompt "Page size"
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default PPC_4K_PAGES
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help
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Select the kernel logical page size. Increasing the page size
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will reduce software overhead at each page boundary, allow
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hardware prefetch mechanisms to be more effective, and allow
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larger dma transfers increasing IO efficiency and reducing
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overhead. However the utilization of memory will increase.
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For example, each cached file will using a multiple of the
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page size to hold its contents and the difference between the
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end of file and the end of page is wasted.
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Some dedicated systems, such as software raid serving with
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accelerated calculations, have shown significant increases.
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If you configure a 64 bit kernel for 64k pages but the
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processor does not support them, then the kernel will simulate
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them with 4k pages, loading them on demand, but with the
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reduced software overhead and larger internal fragmentation.
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For the 32 bit kernel, a large page option will not be offered
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unless it is supported by the configured processor.
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If unsure, choose 4K_PAGES.
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config PPC_4K_PAGES
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bool "4k page size"
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config PPC_16K_PAGES
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bool "16k page size" if 44x
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config PPC_64K_PAGES
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bool "64k page size" if 44x || PPC_STD_MMU_64 || PPC_BOOK3E_64
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select PPC_HAS_HASH_64K if PPC_STD_MMU_64
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config PPC_256K_PAGES
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bool "256k page size" if 44x
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depends on !STDBINUTILS
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help
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Make the page size 256k.
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As the ELF standard only requires alignment to support page
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sizes up to 64k, you will need to compile all of your user
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space applications with a non-standard binutils settings
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(see the STDBINUTILS description for details).
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Say N unless you know what you are doing.
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endchoice
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config FORCE_MAX_ZONEORDER
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int "Maximum zone order"
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range 9 64 if PPC64 && PPC_64K_PAGES
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default "9" if PPC64 && PPC_64K_PAGES
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range 13 64 if PPC64 && !PPC_64K_PAGES
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default "13" if PPC64 && !PPC_64K_PAGES
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range 9 64 if PPC32 && PPC_16K_PAGES
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default "9" if PPC32 && PPC_16K_PAGES
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range 7 64 if PPC32 && PPC_64K_PAGES
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default "7" if PPC32 && PPC_64K_PAGES
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range 5 64 if PPC32 && PPC_256K_PAGES
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default "5" if PPC32 && PPC_256K_PAGES
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range 11 64
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default "11"
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help
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The kernel memory allocator divides physically contiguous memory
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blocks into "zones", where each zone is a power of two number of
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pages. This option selects the largest power of two that the kernel
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keeps in the memory allocator. If you need to allocate very large
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blocks of physically contiguous memory, then you may need to
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increase this value.
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This config option is actually maximum order plus one. For example,
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a value of 11 means that the largest free memory block is 2^10 pages.
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The page size is not necessarily 4KB. For example, on 64-bit
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systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES. Keep
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this in mind when choosing a value for this option.
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config PPC_SUBPAGE_PROT
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bool "Support setting protections for 4k subpages"
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depends on PPC_STD_MMU_64 && PPC_64K_PAGES
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help
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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 PPC_DENORMALISATION
|
|
bool "PowerPC denormalisation exception handling"
|
|
depends on PPC_BOOK3S_64
|
|
default "n"
|
|
---help---
|
|
Add support for handling denormalisation of single precision
|
|
values. Useful for bare metal only. If unsure say Y 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
|
|
|
|
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"
|