Kconfig

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    1 config FRAME_POINTER
    2         def_bool n
    3 
    4 config ZONE_DMA
    5         def_bool y
    6 
    7 config XTENSA
    8         def_bool y
    9         select HAVE_IDE
   10         select GENERIC_ATOMIC64
   11         select HAVE_GENERIC_HARDIRQS
   12         select GENERIC_IRQ_SHOW
   13         select GENERIC_CPU_DEVICES
   14         select MODULES_USE_ELF_RELA
   15         select GENERIC_PCI_IOMAP
   16         select ARCH_WANT_OPTIONAL_GPIOLIB
   17         select CLONE_BACKWARDS
   18         select IRQ_DOMAIN
   19         help
   20           Xtensa processors are 32-bit RISC machines designed by Tensilica
   21           primarily for embedded systems.  These processors are both
   22           configurable and extensible.  The Linux port to the Xtensa
   23           architecture supports all processor configurations and extensions,
   24           with reasonable minimum requirements.  The Xtensa Linux project has
   25           a home page at <http://xtensa.sourceforge.net/>.
   26 
   27 config RWSEM_XCHGADD_ALGORITHM
   28         def_bool y
   29 
   30 config GENERIC_HWEIGHT
   31         def_bool y
   32 
   33 config GENERIC_GPIO
   34         def_bool y
   35 
   36 config ARCH_HAS_ILOG2_U32
   37         def_bool n
   38 
   39 config ARCH_HAS_ILOG2_U64
   40         def_bool n
   41 
   42 config NO_IOPORT
   43         def_bool n
   44 
   45 config HZ
   46         int
   47         default 100
   48 
   49 source "init/Kconfig"
   50 source "kernel/Kconfig.freezer"
   51 
   52 config MMU
   53         def_bool n
   54 
   55 config VARIANT_IRQ_SWITCH
   56         def_bool n
   57 
   58 menu "Processor type and features"
   59 
   60 choice
   61         prompt "Xtensa Processor Configuration"
   62         default XTENSA_VARIANT_FSF
   63 
   64 config XTENSA_VARIANT_FSF
   65         bool "fsf - default (not generic) configuration"
   66         select MMU
   67 
   68 config XTENSA_VARIANT_DC232B
   69         bool "dc232b - Diamond 232L Standard Core Rev.B (LE)"
   70         select MMU
   71         help
   72           This variant refers to Tensilica's Diamond 232L Standard core Rev.B (LE).
   73 
   74 config XTENSA_VARIANT_S6000
   75         bool "s6000 - Stretch software configurable processor"
   76         select VARIANT_IRQ_SWITCH
   77         select ARCH_REQUIRE_GPIOLIB
   78         select XTENSA_CALIBRATE_CCOUNT
   79 endchoice
   80 
   81 config XTENSA_UNALIGNED_USER
   82         bool "Unaligned memory access in use space"
   83         help
   84           The Xtensa architecture currently does not handle unaligned
   85           memory accesses in hardware but through an exception handler.
   86           Per default, unaligned memory accesses are disabled in user space.
   87 
   88           Say Y here to enable unaligned memory access in user space.
   89 
   90 source "kernel/Kconfig.preempt"
   91 
   92 config MATH_EMULATION
   93         bool "Math emulation"
   94         help
   95         Can we use information of configuration file?
   96 
   97 endmenu
   98 
   99 config XTENSA_CALIBRATE_CCOUNT
  100         def_bool n
  101         help
  102           On some platforms (XT2000, for example), the CPU clock rate can
  103           vary.  The frequency can be determined, however, by measuring
  104           against a well known, fixed frequency, such as an UART oscillator.
  105 
  106 config SERIAL_CONSOLE
  107         def_bool n
  108 
  109 config XTENSA_ISS_NETWORK
  110         def_bool n
  111 
  112 menu "Bus options"
  113 
  114 config PCI
  115         bool "PCI support"
  116         default y
  117         help
  118           Find out whether you have a PCI motherboard. PCI is the name of a
  119           bus system, i.e. the way the CPU talks to the other stuff inside
  120           your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
  121           VESA. If you have PCI, say Y, otherwise N.
  122 
  123 source "drivers/pci/Kconfig"
  124 
  125 endmenu
  126 
  127 menu "Platform options"
  128 
  129 choice
  130         prompt "Xtensa System Type"
  131         default XTENSA_PLATFORM_ISS
  132 
  133 config XTENSA_PLATFORM_ISS
  134         bool "ISS"
  135         select XTENSA_CALIBRATE_CCOUNT
  136         select SERIAL_CONSOLE
  137         select XTENSA_ISS_NETWORK
  138         help
  139           ISS is an acronym for Tensilica's Instruction Set Simulator.
  140 
  141 config XTENSA_PLATFORM_XT2000
  142         bool "XT2000"
  143         help
  144           XT2000 is the name of Tensilica's feature-rich emulation platform.
  145           This hardware is capable of running a full Linux distribution.
  146 
  147 config XTENSA_PLATFORM_S6105
  148         bool "S6105"
  149         select SERIAL_CONSOLE
  150         select NO_IOPORT
  151 
  152 config XTENSA_PLATFORM_XTFPGA
  153         bool "XTFPGA"
  154         select SERIAL_CONSOLE
  155         select ETHOC
  156         select XTENSA_CALIBRATE_CCOUNT
  157         help
  158           XTFPGA is the name of Tensilica board family (LX60, LX110, LX200, ML605).
  159           This hardware is capable of running a full Linux distribution.
  160 
  161 endchoice
  162 
  163 
  164 config XTENSA_CPU_CLOCK
  165         int "CPU clock rate [MHz]"
  166         depends on !XTENSA_CALIBRATE_CCOUNT
  167         default 16
  168 
  169 config GENERIC_CALIBRATE_DELAY
  170         bool "Auto calibration of the BogoMIPS value"
  171         help
  172           The BogoMIPS value can easily be derived from the CPU frequency.
  173 
  174 config CMDLINE_BOOL
  175         bool "Default bootloader kernel arguments"
  176 
  177 config CMDLINE
  178         string "Initial kernel command string"
  179         depends on CMDLINE_BOOL
  180         default "console=ttyS0,38400 root=/dev/ram"
  181         help
  182           On some architectures (EBSA110 and CATS), there is currently no way
  183           for the boot loader to pass arguments to the kernel. For these
  184           architectures, you should supply some command-line options at build
  185           time by entering them here. As a minimum, you should specify the
  186           memory size and the root device (e.g., mem=64M root=/dev/nfs).
  187 
  188 config USE_OF
  189         bool "Flattened Device Tree support"
  190         select OF
  191         select OF_EARLY_FLATTREE
  192         help
  193           Include support for flattened device tree machine descriptions.
  194 
  195 config BUILTIN_DTB
  196         string "DTB to build into the kernel image"
  197         depends on OF
  198 
  199 source "mm/Kconfig"
  200 
  201 source "drivers/pcmcia/Kconfig"
  202 
  203 source "drivers/pci/hotplug/Kconfig"
  204 
  205 endmenu
  206 
  207 menu "Executable file formats"
  208 
  209 # only elf supported
  210 config KCORE_ELF
  211         def_bool y
  212         depends on PROC_FS
  213         help
  214           If you enabled support for /proc file system then the file
  215           /proc/kcore will contain the kernel core image in ELF format. This
  216           can be used in gdb:
  217 
  218           $ cd /usr/src/linux ; gdb vmlinux /proc/kcore
  219 
  220           This is especially useful if you have compiled the kernel with the
  221           "-g" option to preserve debugging information. It is mainly used
  222           for examining kernel data structures on the live kernel.
  223 
  224 source "fs/Kconfig.binfmt"
  225 
  226 endmenu
  227 
  228 source "net/Kconfig"
  229 
  230 source "drivers/Kconfig"
  231 
  232 source "fs/Kconfig"
  233 
  234 source "arch/xtensa/Kconfig.debug"
  235 
  236 source "security/Kconfig"
  237 
  238 source "crypto/Kconfig"
  239 
  240 source "lib/Kconfig"
  241 
  242

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FreeBSD/Linux Kernel Cross Reference sys/arch/xtensa/Kconfig

FreeBSD/Linux Kernel Cross Reference
sys/arch/xtensa/Kconfig