arch/xtensa/Kconfig

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