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Diffstat (limited to 'arch/metag/Kconfig')
| -rw-r--r-- | arch/metag/Kconfig | 290 |
1 files changed, 290 insertions, 0 deletions
diff --git a/arch/metag/Kconfig b/arch/metag/Kconfig new file mode 100644 index 000000000000..afc8973d1488 --- /dev/null +++ b/arch/metag/Kconfig @@ -0,0 +1,290 @@ +config SYMBOL_PREFIX + string + default "_" + +config METAG + def_bool y + select EMBEDDED + select GENERIC_ATOMIC64 + select GENERIC_CLOCKEVENTS + select GENERIC_IRQ_SHOW + select GENERIC_SMP_IDLE_THREAD + select HAVE_64BIT_ALIGNED_ACCESS + select HAVE_ARCH_TRACEHOOK + select HAVE_C_RECORDMCOUNT + select HAVE_DEBUG_KMEMLEAK + select HAVE_DYNAMIC_FTRACE + select HAVE_FTRACE_MCOUNT_RECORD + select HAVE_FUNCTION_TRACER + select HAVE_FUNCTION_TRACE_MCOUNT_TEST + select HAVE_GENERIC_HARDIRQS + select HAVE_KERNEL_BZIP2 + select HAVE_KERNEL_GZIP + select HAVE_KERNEL_LZO + select HAVE_KERNEL_XZ + select HAVE_MEMBLOCK + select HAVE_MEMBLOCK_NODE_MAP + select HAVE_MOD_ARCH_SPECIFIC + select HAVE_PERF_EVENTS + select HAVE_SYSCALL_TRACEPOINTS + select IRQ_DOMAIN + select MODULES_USE_ELF_RELA + select OF + select OF_EARLY_FLATTREE + select SPARSE_IRQ + +config STACKTRACE_SUPPORT + def_bool y + +config LOCKDEP_SUPPORT + def_bool y + +config HAVE_LATENCYTOP_SUPPORT + def_bool y + +config RWSEM_GENERIC_SPINLOCK + def_bool y + +config RWSEM_XCHGADD_ALGORITHM + bool + +config GENERIC_HWEIGHT + def_bool y + +config GENERIC_CALIBRATE_DELAY + def_bool y + +config GENERIC_GPIO + def_bool n + +config NO_IOPORT + def_bool y + +source "init/Kconfig" + +source "kernel/Kconfig.freezer" + +menu "Processor type and features" + +config MMU + def_bool y + +config STACK_GROWSUP + def_bool y + +config HOTPLUG_CPU + bool "Enable CPU hotplug support" + depends on SMP + help + Say Y here to allow turning CPUs off and on. CPUs can be + controlled through /sys/devices/system/cpu. + + Say N if you want to disable CPU hotplug. + +config HIGHMEM + bool "High Memory Support" + help + The address space of Meta processors is only 4 Gigabytes large + and it has to accommodate user address space, kernel address + space as well as some memory mapped IO. That means that, if you + have a large amount of physical memory and/or IO, not all of the + memory can be "permanently mapped" by the kernel. The physical + memory that is not permanently mapped is called "high memory". + + Depending on the selected kernel/user memory split, minimum + vmalloc space and actual amount of RAM, you may not need this + option which should result in a slightly faster kernel. + + If unsure, say n. + +source "arch/metag/mm/Kconfig" + +source "arch/metag/Kconfig.soc" + +config METAG_META12 + bool + help + Select this from the SoC config symbol to indicate that it contains a + Meta 1.2 core. + +config METAG_META21 + bool + help + Select this from the SoC config symbol to indicate that it contains a + Meta 2.1 core. + +config SMP + bool "Symmetric multi-processing support" + depends on METAG_META21 && METAG_META21_MMU + select USE_GENERIC_SMP_HELPERS + help + This enables support for systems with more than one thread running + Linux. If you have a system with only one thread running Linux, + say N. Otherwise, say Y. + +config NR_CPUS + int "Maximum number of CPUs (2-4)" if SMP + range 2 4 if SMP + default "1" if !SMP + default "4" if SMP + +config METAG_SMP_WRITE_REORDERING + bool + help + This attempts to prevent cache-memory incoherence due to external + reordering of writes from different hardware threads when SMP is + enabled. It adds fences (system event 0) to smp_mb and smp_rmb in an + attempt to catch some of the cases, and also before writes to shared + memory in LOCK1 protected atomics and spinlocks. + This will not completely prevent cache incoherency on affected cores. + +config METAG_LNKGET_AROUND_CACHE + bool + depends on METAG_META21 + help + This indicates that the LNKGET/LNKSET instructions go around the + cache, which requires some extra cache flushes when the memory needs + to be accessed by normal GET/SET instructions too. + +choice + prompt "Atomicity primitive" + default METAG_ATOMICITY_LNKGET + help + This option selects the mechanism for performing atomic operations. + +config METAG_ATOMICITY_IRQSOFF + depends on !SMP + bool "irqsoff" + help + This option disables interrupts to achieve atomicity. This mechanism + is not SMP-safe. + +config METAG_ATOMICITY_LNKGET + depends on METAG_META21 + bool "lnkget/lnkset" + help + This option uses the LNKGET and LNKSET instructions to achieve + atomicity. LNKGET/LNKSET are load-link/store-conditional instructions. + Choose this option if your system requires low latency. + +config METAG_ATOMICITY_LOCK1 + depends on SMP + bool "lock1" + help + This option uses the LOCK1 instruction for atomicity. This is mainly + provided as a debugging aid if the lnkget/lnkset atomicity primitive + isn't working properly. + +endchoice + +config METAG_FPU + bool "FPU Support" + depends on METAG_META21 + default y + help + This option allows processes to use FPU hardware available with this + CPU. If this option is not enabled FPU registers will not be saved + and restored on context-switch. + + If you plan on running programs which are compiled to use hard floats + say Y here. + +config METAG_DSP + bool "DSP Support" + help + This option allows processes to use DSP hardware available + with this CPU. If this option is not enabled DSP registers + will not be saved and restored on context-switch. + + If you plan on running DSP programs say Y here. + +config METAG_PERFCOUNTER_IRQS + bool "PerfCounters interrupt support" + depends on METAG_META21 + help + This option enables using interrupts to collect information from + Performance Counters. This option is supported in new META21 + (starting from HTP265). + + When disabled, Performance Counters information will be collected + based on Timer Interrupt. + +config METAG_DA + bool "DA support" + help + Say Y if you plan to use a DA debug adapter with Linux. The presence + of the DA will be detected automatically at boot, so it is safe to say + Y to this option even when booting without a DA. + + This enables support for services provided by DA JTAG debug adapters, + such as: + - communication over DA channels (such as the console driver). + - use of the DA filesystem. + +menu "Boot options" + +config METAG_BUILTIN_DTB + bool "Embed DTB in kernel image" + default y + help + Embeds a device tree binary in the kernel image. + +config METAG_BUILTIN_DTB_NAME + string "Built in DTB" + depends on METAG_BUILTIN_DTB + help + Set the name of the DTB to embed (leave blank to pick one + automatically based on kernel configuration). + +config CMDLINE_BOOL + bool "Default bootloader kernel arguments" + +config CMDLINE + string "Kernel command line" + depends on CMDLINE_BOOL + help + On some architectures there is currently no way for the boot loader + to pass arguments to the kernel. For these architectures, you should + supply some command-line options at build time by entering them + here. + +config CMDLINE_FORCE + bool "Force default kernel command string" + depends on CMDLINE_BOOL + help + Set this to have arguments from the default kernel command string + override those passed by the boot loader. + +endmenu + +source "kernel/Kconfig.preempt" + +source kernel/Kconfig.hz + +endmenu + +menu "Power management options" + +source kernel/power/Kconfig + +endmenu + +menu "Executable file formats" + +source "fs/Kconfig.binfmt" + +endmenu + +source "net/Kconfig" + +source "drivers/Kconfig" + +source "fs/Kconfig" + +source "arch/metag/Kconfig.debug" + +source "security/Kconfig" + +source "crypto/Kconfig" + +source "lib/Kconfig" |