b8c0aa46b3
to the ftrace function callback infrastructure. It's introducing a way to allow different functions to call directly different trampolines instead of all calling the same "mcount" one. The only user of this for now is the function graph tracer, which always had a different trampoline, but the function tracer trampoline was called and did basically nothing, and then the function graph tracer trampoline was called. The difference now, is that the function graph tracer trampoline can be called directly if a function is only being traced by the function graph trampoline. If function tracing is also happening on the same function, the old way is still done. The accounting for this takes up more memory when function graph tracing is activated, as it needs to keep track of which functions it uses. I have a new way that wont take as much memory, but it's not ready yet for this merge window, and will have to wait for the next one. Another big change was the removal of the ftrace_start/stop() calls that were used by the suspend/resume code that stopped function tracing when entering into suspend and resume paths. The stop of ftrace was done because there was some function that would crash the system if one called smp_processor_id()! The stop/start was a big hammer to solve the issue at the time, which was when ftrace was first introduced into Linux. Now ftrace has better infrastructure to debug such issues, and I found the problem function and labeled it with "notrace" and function tracing can now safely be activated all the way down into the guts of suspend and resume. Other changes include clean ups of uprobe code. Clean up of the trace_seq() code. And other various small fixes and clean ups to ftrace and tracing. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQEcBAABAgAGBQJT35zXAAoJEKQekfcNnQGuOz0H/38zqM0nLFhrgvz3EPk2UOjn xqpX8qyb2V7TJZL+IqeXU2a5cQZl5ba0D4WtBGpxbTae3CJYiuQ87iKUNFoH0om5 FDpn80igb368k8V3qRdRsziKVCCf0XBd/NkHJXc0ZkfXGyzB2Ga4bBxALxp2gj9y bnO+vKo6+tWYKG4hyQb4P3LRXUrK8/LWEsPr39cH2QH1Rdj69Lx9CgrCdUVJmwcb Bj8hEiLXL/RYCFNn79A3wNTUvW0rG/AOIf4SLqXtasSRZ0ToaU0ZyDnrNv+0Ol47 rX8tSk+LfXchL9hpIvjCf1vlAYq3pO02favteR/jip3lx/dTjEDE4RJ9qtJzZ4Q= =fwQY -----END PGP SIGNATURE----- Merge tag 'trace-3.17' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace Pull tracing updates from Steven Rostedt: "This pull request has a lot of work done. The main thing is the changes to the ftrace function callback infrastructure. It's introducing a way to allow different functions to call directly different trampolines instead of all calling the same "mcount" one. The only user of this for now is the function graph tracer, which always had a different trampoline, but the function tracer trampoline was called and did basically nothing, and then the function graph tracer trampoline was called. The difference now, is that the function graph tracer trampoline can be called directly if a function is only being traced by the function graph trampoline. If function tracing is also happening on the same function, the old way is still done. The accounting for this takes up more memory when function graph tracing is activated, as it needs to keep track of which functions it uses. I have a new way that wont take as much memory, but it's not ready yet for this merge window, and will have to wait for the next one. Another big change was the removal of the ftrace_start/stop() calls that were used by the suspend/resume code that stopped function tracing when entering into suspend and resume paths. The stop of ftrace was done because there was some function that would crash the system if one called smp_processor_id()! The stop/start was a big hammer to solve the issue at the time, which was when ftrace was first introduced into Linux. Now ftrace has better infrastructure to debug such issues, and I found the problem function and labeled it with "notrace" and function tracing can now safely be activated all the way down into the guts of suspend and resume Other changes include clean ups of uprobe code, clean up of the trace_seq() code, and other various small fixes and clean ups to ftrace and tracing" * tag 'trace-3.17' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: (57 commits) ftrace: Add warning if tramp hash does not match nr_trampolines ftrace: Fix trampoline hash update check on rec->flags ring-buffer: Use rb_page_size() instead of open coded head_page size ftrace: Rename ftrace_ops field from trampolines to nr_trampolines tracing: Convert local function_graph functions to static ftrace: Do not copy old hash when resetting tracing: let user specify tracing_thresh after selecting function_graph ring-buffer: Always run per-cpu ring buffer resize with schedule_work_on() tracing: Remove function_trace_stop and HAVE_FUNCTION_TRACE_MCOUNT_TEST s390/ftrace: remove check of obsolete variable function_trace_stop arm64, ftrace: Remove check of obsolete variable function_trace_stop Blackfin: ftrace: Remove check of obsolete variable function_trace_stop metag: ftrace: Remove check of obsolete variable function_trace_stop microblaze: ftrace: Remove check of obsolete variable function_trace_stop MIPS: ftrace: Remove check of obsolete variable function_trace_stop parisc: ftrace: Remove check of obsolete variable function_trace_stop sh: ftrace: Remove check of obsolete variable function_trace_stop sparc64,ftrace: Remove check of obsolete variable function_trace_stop tile: ftrace: Remove check of obsolete variable function_trace_stop ftrace: x86: Remove check of obsolete variable function_trace_stop ...
562 lines
14 KiB
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562 lines
14 KiB
Text
config 64BIT
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bool "64-bit kernel" if ARCH = "sparc"
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default ARCH = "sparc64"
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help
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SPARC is a family of RISC microprocessors designed and marketed by
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Sun Microsystems, incorporated. They are very widely found in Sun
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workstations and clones.
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Say yes to build a 64-bit kernel - formerly known as sparc64
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Say no to build a 32-bit kernel - formerly known as sparc
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config SPARC
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bool
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default y
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select ARCH_MIGHT_HAVE_PC_PARPORT if SPARC64 && PCI
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select ARCH_MIGHT_HAVE_PC_SERIO
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select OF
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select OF_PROMTREE
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select HAVE_IDE
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select HAVE_OPROFILE
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select HAVE_ARCH_KGDB if !SMP || SPARC64
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select HAVE_ARCH_TRACEHOOK
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select SYSCTL_EXCEPTION_TRACE
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select ARCH_WANT_OPTIONAL_GPIOLIB
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select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
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select RTC_CLASS
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select RTC_DRV_M48T59
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select HAVE_DMA_ATTRS
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select HAVE_DMA_API_DEBUG
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select HAVE_ARCH_JUMP_LABEL if SPARC64
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select GENERIC_IRQ_SHOW
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select ARCH_WANT_IPC_PARSE_VERSION
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select GENERIC_PCI_IOMAP
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select HAVE_NMI_WATCHDOG if SPARC64
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select HAVE_BPF_JIT
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select HAVE_DEBUG_BUGVERBOSE
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select GENERIC_SMP_IDLE_THREAD
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select GENERIC_CMOS_UPDATE
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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 MODULES_USE_ELF_RELA
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select ODD_RT_SIGACTION
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select OLD_SIGSUSPEND
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config SPARC32
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def_bool !64BIT
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select GENERIC_ATOMIC64
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select CLZ_TAB
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select HAVE_UID16
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select OLD_SIGACTION
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config SPARC64
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def_bool 64BIT
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select HAVE_FUNCTION_TRACER
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select HAVE_FUNCTION_GRAPH_TRACER
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select HAVE_FUNCTION_GRAPH_FP_TEST
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select HAVE_KRETPROBES
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select HAVE_KPROBES
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select HAVE_RCU_TABLE_FREE if SMP
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select HAVE_MEMBLOCK
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select HAVE_MEMBLOCK_NODE_MAP
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select HAVE_ARCH_TRANSPARENT_HUGEPAGE
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select HAVE_DYNAMIC_FTRACE
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select HAVE_FTRACE_MCOUNT_RECORD
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select HAVE_SYSCALL_TRACEPOINTS
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select HAVE_CONTEXT_TRACKING
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select HAVE_DEBUG_KMEMLEAK
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select RTC_DRV_CMOS
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select RTC_DRV_BQ4802
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select RTC_DRV_SUN4V
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select RTC_DRV_STARFIRE
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select HAVE_PERF_EVENTS
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select PERF_USE_VMALLOC
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select IRQ_PREFLOW_FASTEOI
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select ARCH_HAVE_NMI_SAFE_CMPXCHG
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select HAVE_C_RECORDMCOUNT
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select NO_BOOTMEM
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select HAVE_ARCH_AUDITSYSCALL
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select ARCH_SUPPORTS_ATOMIC_RMW
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config ARCH_DEFCONFIG
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string
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default "arch/sparc/configs/sparc32_defconfig" if SPARC32
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default "arch/sparc/configs/sparc64_defconfig" if SPARC64
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config IOMMU_HELPER
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bool
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default y if SPARC64
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config STACKTRACE_SUPPORT
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bool
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default y if SPARC64
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config LOCKDEP_SUPPORT
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bool
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default y if SPARC64
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config HAVE_LATENCYTOP_SUPPORT
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bool
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default y if SPARC64
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config ARCH_HIBERNATION_POSSIBLE
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def_bool y if SPARC64
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config AUDIT_ARCH
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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 y if SPARC64
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config NEED_PER_CPU_EMBED_FIRST_CHUNK
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def_bool y if SPARC64
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config NEED_PER_CPU_PAGE_FIRST_CHUNK
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def_bool y if SPARC64
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config MMU
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bool
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default y
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config HIGHMEM
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bool
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default y if SPARC32
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config ZONE_DMA
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bool
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default y if SPARC32
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config NEED_DMA_MAP_STATE
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def_bool y
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config NEED_SG_DMA_LENGTH
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def_bool y
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config GENERIC_ISA_DMA
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bool
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default y if SPARC32
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config ARCH_SUPPORTS_DEBUG_PAGEALLOC
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def_bool y if SPARC64
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source "init/Kconfig"
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source "kernel/Kconfig.freezer"
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menu "Processor type and features"
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config SMP
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bool "Symmetric multi-processing support"
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---help---
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This enables support for systems with more than one CPU. If you have
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a system with only one CPU, say N. If you have a system with more
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than one CPU, say Y.
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If you say N here, the kernel will run on uni- and multiprocessor
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machines, but will use only one CPU of a multiprocessor machine. If
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you say Y here, the kernel will run on many, but not all,
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uniprocessor machines. On a uniprocessor machine, the kernel
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will run faster if you say N here.
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People using multiprocessor machines who say Y here should also say
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Y to "Enhanced Real Time Clock Support", below. The "Advanced Power
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Management" code will be disabled if you say Y here.
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See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
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available at <http://www.tldp.org/docs.html#howto>.
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If you don't know what to do here, say N.
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config NR_CPUS
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int "Maximum number of CPUs"
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depends on SMP
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range 2 32 if SPARC32
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range 2 1024 if SPARC64
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default 32 if SPARC32
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default 64 if SPARC64
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source kernel/Kconfig.hz
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config RWSEM_GENERIC_SPINLOCK
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bool
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default y if SPARC32
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config RWSEM_XCHGADD_ALGORITHM
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bool
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default y if SPARC64
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config GENERIC_HWEIGHT
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bool
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default y
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config GENERIC_CALIBRATE_DELAY
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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 y
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config EMULATED_CMPXCHG
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bool
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default y if SPARC32
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help
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Sparc32 does not have a CAS instruction like sparc64. cmpxchg()
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is emulated, and therefore it is not completely atomic.
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# Makefile helpers
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config SPARC32_SMP
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bool
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default y
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depends on SPARC32 && SMP
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config SPARC64_SMP
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bool
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default y
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depends on SPARC64 && SMP
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config EARLYFB
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bool "Support for early boot text console"
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default y
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depends on SPARC64
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help
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Say Y here to enable a faster early framebuffer boot console.
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config SECCOMP
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bool "Enable seccomp to safely compute untrusted bytecode"
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depends on SPARC64 && PROC_FS
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default y
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help
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This kernel feature is useful for number crunching applications
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that may need to compute untrusted bytecode during their
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execution. By using pipes or other transports made available to
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the process as file descriptors supporting the read/write
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syscalls, it's possible to isolate those applications in
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their own address space using seccomp. Once seccomp is
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enabled via /proc/<pid>/seccomp, it cannot be disabled
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and the task is only allowed to execute a few safe syscalls
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defined by each seccomp mode.
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If unsure, say Y. Only embedded should say N here.
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config HOTPLUG_CPU
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bool "Support for hot-pluggable CPUs"
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depends on SPARC64 && SMP
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help
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Say Y here to experiment with turning CPUs off and on. CPUs
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can be controlled through /sys/devices/system/cpu/cpu#.
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Say N if you want to disable CPU hotplug.
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if SPARC64
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source "drivers/cpufreq/Kconfig"
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endif
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config US3_MC
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tristate "UltraSPARC-III Memory Controller driver"
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depends on SPARC64
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default y
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help
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This adds a driver for the UltraSPARC-III memory controller.
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Loading this driver allows exact mnemonic strings to be
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printed in the event of a memory error, so that the faulty DIMM
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on the motherboard can be matched to the error.
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If in doubt, say Y, as this information can be very useful.
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# Global things across all Sun machines.
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config GENERIC_LOCKBREAK
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bool
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default y
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depends on SPARC64 && SMP && PREEMPT
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config NUMA
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bool "NUMA support"
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depends on SPARC64 && SMP
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config NODES_SHIFT
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int
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default "4"
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depends on NEED_MULTIPLE_NODES
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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 ARCH_SELECT_MEMORY_MODEL
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def_bool y if SPARC64
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config ARCH_SPARSEMEM_ENABLE
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def_bool y if SPARC64
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select SPARSEMEM_VMEMMAP_ENABLE
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config ARCH_SPARSEMEM_DEFAULT
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def_bool y if SPARC64
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source "mm/Kconfig"
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if SPARC64
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source "kernel/power/Kconfig"
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endif
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config SCHED_SMT
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bool "SMT (Hyperthreading) scheduler support"
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depends on SPARC64 && SMP
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default y
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help
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SMT scheduler support improves the CPU scheduler's decision making
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when dealing with SPARC cpus at a cost of slightly increased overhead
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in some places. If unsure say N here.
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config SCHED_MC
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bool "Multi-core scheduler support"
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depends on SPARC64 && SMP
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default y
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help
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Multi-core scheduler support improves the CPU scheduler's decision
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making when dealing with multi-core CPU chips at a cost of slightly
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increased overhead in some places. If unsure say N here.
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source "kernel/Kconfig.preempt"
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config CMDLINE_BOOL
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bool "Default bootloader kernel arguments"
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depends on SPARC64
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config CMDLINE
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string "Initial kernel command string"
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depends on CMDLINE_BOOL
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default "console=ttyS0,9600 root=/dev/sda1"
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help
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Say Y here if you want to be able to pass default arguments to
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the kernel. This will be overridden by the bootloader, if you
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use one (such as SILO). This is most useful if you want to boot
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a kernel from TFTP, and want default options to be available
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with having them passed on the command line.
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NOTE: This option WILL override the PROM bootargs setting!
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config SUN_PM
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bool
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default y if SPARC32
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help
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Enable power management and CPU standby features on supported
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SPARC platforms.
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config SPARC_LED
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tristate "Sun4m LED driver"
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depends on SPARC32
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help
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This driver toggles the front-panel LED on sun4m systems
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in a user-specifiable manner. Its state can be probed
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by reading /proc/led and its blinking mode can be changed
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via writes to /proc/led
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config SERIAL_CONSOLE
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bool
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depends on SPARC32
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default y
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---help---
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If you say Y here, it will be possible to use a serial port as the
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system console (the system console is the device which receives all
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kernel messages and warnings and which allows logins in single user
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mode). This could be useful if some terminal or printer is connected
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to that serial port.
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Even if you say Y here, the currently visible virtual console
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(/dev/tty0) will still be used as the system console by default, but
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you can alter that using a kernel command line option such as
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"console=ttyS1". (Try "man bootparam" or see the documentation of
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your boot loader (silo) about how to pass options to the kernel at
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boot time.)
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If you don't have a graphics card installed and you say Y here, the
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kernel will automatically use the first serial line, /dev/ttyS0, as
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system console.
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If unsure, say N.
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config SPARC_LEON
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bool "Sparc Leon processor family"
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depends on SPARC32
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select USB_EHCI_BIG_ENDIAN_MMIO
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select USB_EHCI_BIG_ENDIAN_DESC
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---help---
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If you say Y here if you are running on a SPARC-LEON processor.
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The LEON processor is a synthesizable VHDL model of the
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SPARC-v8 standard. LEON is part of the GRLIB collection of
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IP cores that are distributed under GPL. GRLIB can be downloaded
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from www.gaisler.com. You can download a sparc-linux cross-compilation
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toolchain at www.gaisler.com.
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if SPARC_LEON
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menu "U-Boot options"
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config UBOOT_LOAD_ADDR
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hex "uImage Load Address"
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default 0x40004000
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---help---
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U-Boot kernel load address, the address in physical address space
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where u-boot will place the Linux kernel before booting it.
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This address is normally the base address of main memory + 0x4000.
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config UBOOT_FLASH_ADDR
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hex "uImage.o Load Address"
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default 0x00080000
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---help---
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Optional setting only affecting the uImage.o ELF-image used to
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download the uImage file to the target using a ELF-loader other than
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U-Boot. It may for example be used to download an uImage to FLASH with
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the GRMON utility before even starting u-boot.
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config UBOOT_ENTRY_ADDR
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hex "uImage Entry Address"
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default 0xf0004000
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---help---
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Do not change this unless you know what you're doing. This is
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hardcoded by the SPARC32 and LEON port.
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This is the virtual address u-boot jumps to when booting the Linux
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Kernel.
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endmenu
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endif
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endmenu
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menu "Bus options (PCI etc.)"
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config SBUS
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bool
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default y
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config SBUSCHAR
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bool
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default y
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config SUN_LDOMS
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bool "Sun Logical Domains support"
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depends on SPARC64
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help
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Say Y here is you want to support virtual devices via
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Logical Domains.
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config PCI
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bool "Support for PCI and PS/2 keyboard/mouse"
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help
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Find out whether your system includes a PCI bus. PCI is the name of
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a bus system, i.e. the way the CPU talks to the other stuff inside
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your box. If you say Y here, the kernel will include drivers and
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infrastructure code to support PCI bus devices.
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CONFIG_PCI is needed for all JavaStation's (including MrCoffee),
|
|
CP-1200, JavaEngine-1, Corona, Red October, and Serengeti SGSC.
|
|
All of these platforms are extremely obscure, so say N if unsure.
|
|
|
|
config PCI_DOMAINS
|
|
def_bool PCI if SPARC64
|
|
|
|
config PCI_SYSCALL
|
|
def_bool PCI
|
|
|
|
config PCIC_PCI
|
|
bool
|
|
depends on PCI && SPARC32 && !SPARC_LEON
|
|
default y
|
|
|
|
config LEON_PCI
|
|
bool
|
|
depends on PCI && SPARC_LEON
|
|
default y
|
|
|
|
config SPARC_GRPCI1
|
|
bool "GRPCI Host Bridge Support"
|
|
depends on LEON_PCI
|
|
default y
|
|
help
|
|
Say Y here to include the GRPCI Host Bridge Driver. The GRPCI
|
|
PCI host controller is typically found in GRLIB SPARC32/LEON
|
|
systems. The driver has one property (all_pci_errors) controlled
|
|
from the bootloader that makes the GRPCI to generate interrupts
|
|
on detected PCI Parity and System errors.
|
|
|
|
config SPARC_GRPCI2
|
|
bool "GRPCI2 Host Bridge Support"
|
|
depends on LEON_PCI
|
|
default y
|
|
help
|
|
Say Y here to include the GRPCI2 Host Bridge Driver.
|
|
|
|
source "drivers/pci/Kconfig"
|
|
|
|
source "drivers/pcmcia/Kconfig"
|
|
|
|
config SUN_OPENPROMFS
|
|
tristate "Openprom tree appears in /proc/openprom"
|
|
help
|
|
If you say Y, the OpenPROM device tree will be available as a
|
|
virtual file system, which you can mount to /proc/openprom by "mount
|
|
-t openpromfs none /proc/openprom".
|
|
|
|
To compile the /proc/openprom support as a module, choose M here: the
|
|
module will be called openpromfs.
|
|
|
|
Only choose N if you know in advance that you will not need to modify
|
|
OpenPROM settings on the running system.
|
|
|
|
# Makefile helpers
|
|
config SPARC64_PCI
|
|
bool
|
|
default y
|
|
depends on SPARC64 && PCI
|
|
|
|
config SPARC64_PCI_MSI
|
|
bool
|
|
default y
|
|
depends on SPARC64_PCI && PCI_MSI
|
|
|
|
endmenu
|
|
|
|
menu "Executable file formats"
|
|
|
|
source "fs/Kconfig.binfmt"
|
|
|
|
config COMPAT
|
|
bool
|
|
depends on SPARC64
|
|
default y
|
|
select COMPAT_BINFMT_ELF
|
|
select HAVE_UID16
|
|
select ARCH_WANT_OLD_COMPAT_IPC
|
|
select COMPAT_OLD_SIGACTION
|
|
|
|
config SYSVIPC_COMPAT
|
|
bool
|
|
depends on COMPAT && SYSVIPC
|
|
default y
|
|
|
|
config KEYS_COMPAT
|
|
def_bool y if COMPAT && KEYS
|
|
|
|
endmenu
|
|
|
|
source "net/Kconfig"
|
|
|
|
source "drivers/Kconfig"
|
|
|
|
source "drivers/sbus/char/Kconfig"
|
|
|
|
source "fs/Kconfig"
|
|
|
|
source "arch/sparc/Kconfig.debug"
|
|
|
|
source "security/Kconfig"
|
|
|
|
source "crypto/Kconfig"
|
|
|
|
source "lib/Kconfig"
|