arch/openrisc/Kconfig

   1 #
   2 # For a description of the syntax of this configuration file,
   3 # see Documentation/kbuild/config-language.txt.
   4 #
   5
   6 config OPENRISC
   7         def_bool y
   8         select OF
   9         select OF_EARLY_FLATTREE
  10         select HAVE_MEMBLOCK
  11         select ARCH_WANT_OPTIONAL_GPIOLIB
  12         select HAVE_ARCH_TRACEHOOK
  13         select HAVE_GENERIC_HARDIRQS
  14         select GENERIC_IRQ_CHIP
  15         select GENERIC_IRQ_PROBE
  16         select GENERIC_IRQ_SHOW
  17         select GENERIC_IOMAP
  18
  19 config MMU
  20         def_bool y
  21
  22 config WISHBONE_BUS_BIG_ENDIAN
  23         def_bool y
  24
  25 config SYMBOL_PREFIX
  26         string
  27         default ""
  28
  29 config HAVE_DMA_ATTRS
  30         def_bool y
  31
  32 config UID16
  33         def_bool y
  34
  35 config RWSEM_GENERIC_SPINLOCK
  36         def_bool y
  37
  38 config RWSEM_XCHGADD_ALGORITHM
  39         def_bool n
  40
  41 config GENERIC_HWEIGHT
  42         def_bool y
  43
  44 config GENERIC_IOMAP
  45         def_bool y
  46
  47 config NO_IOPORT
  48         def_bool y
  49
  50 config GENERIC_GPIO
  51         def_bool y
  52
  53 config GENERIC_CLOCKEVENTS
  54         def_bool y
  55
  56 config TRACE_IRQFLAGS_SUPPORT
  57         def_bool y
  58
  59 # For now, use generic checksum functions
  60 #These can be reimplemented in assembly later if so inclined
  61 config GENERIC_CSUM
  62         def_bool y
  63
  64 config GENERIC_FIND_NEXT_BIT
  65         def_bool y
  66
  67 source "init/Kconfig"
  68
  69
  70 menu "Processor type and features"
  71
  72 choice
  73         prompt "Subarchitecture"
  74         default OR1K_1200
  75
  76 config OR1K_1200
  77         bool "OR1200"
  78         help
  79           Generic OpenRISC 1200 architecture
  80
  81 endchoice
  82
  83 config OPENRISC_BUILTIN_DTB
  84         string "Builtin DTB"
  85         default ""
  86
  87 menu "Class II Instructions"
  88
  89 config OPENRISC_HAVE_INST_FF1
  90         bool "Have instruction l.ff1"
  91         default y
  92         help
  93           Select this if your implementation has the Class II instruction l.ff1
  94
  95 config OPENRISC_HAVE_INST_FL1
  96         bool "Have instruction l.fl1"
  97         default y
  98         help
  99           Select this if your implementation has the Class II instruction l.fl1
 100
 101 config OPENRISC_HAVE_INST_MUL
 102         bool "Have instruction l.mul for hardware multiply"
 103         default y
 104         help
 105           Select this if your implementation has a hardware multiply instruction
 106
 107 config OPENRISC_HAVE_INST_DIV
 108         bool "Have instruction l.div for hardware divide"
 109         default y
 110         help
 111           Select this if your implementation has a hardware divide instruction
 112 endmenu
 113
 114
 115 source "kernel/time/Kconfig"
 116 source kernel/Kconfig.hz
 117 source kernel/Kconfig.preempt
 118 source "mm/Kconfig"
 119
 120 config OPENRISC_NO_SPR_SR_DSX
 121         bool "use SPR_SR_DSX software emulation" if OR1K_1200
 122         default y
 123         help
 124           SPR_SR_DSX bit is status register bit indicating whether
 125           the last exception has happened in delay slot.
 126
 127           OpenRISC architecture makes it optional to have it implemented
 128           in hardware and the OR1200 does not have it.
 129
 130           Say N here if you know that your OpenRISC processor has
 131           SPR_SR_DSX bit implemented. Say Y if you are unsure.
 132
 133 config CMDLINE
 134         string "Default kernel command string"
 135         default ""
 136         help
 137           On some architectures there is currently no way for the boot loader
 138           to pass arguments to the kernel. For these architectures, you should
 139           supply some command-line options at build time by entering them
 140           here.
 141
 142 menu "Debugging options"
 143
 144 config DEBUG_STACKOVERFLOW
 145         bool "Check for kernel stack overflow"
 146         default y
 147         help
 148           Make extra checks for space avaliable on stack in some
 149           critical functions. This will cause kernel to run a bit slower,
 150           but will catch most of kernel stack overruns and exit gracefuly.
 151
 152           Say Y if you are unsure.
 153
 154 config JUMP_UPON_UNHANDLED_EXCEPTION
 155         bool "Try to die gracefully"
 156         default y
 157         help
 158           Now this puts kernel into infinite loop after first oops. Till
 159           your kernel crashes this doesn't have any influence.
 160
 161           Say Y if you are unsure.
 162
 163 config OPENRISC_EXCEPTION_DEBUG
 164         bool "Print processor state at each exception"
 165         default n
 166         help
 167           This option will make your kernel unusable for all but kernel
 168           debugging.
 169
 170           Say N if you are unsure.
 171
 172 config OPENRISC_ESR_EXCEPTION_BUG_CHECK
 173         bool "Check for possible ESR exception bug"
 174         default n
 175         help
 176           This option enables some checks that might expose some problems
 177           in kernel.
 178
 179           Say N if you are unsure.
 180
 181 endmenu
 182
 183 endmenu
 184
 185 menu "Executable file formats"
 186
 187 source "fs/Kconfig.binfmt"
 188
 189 endmenu
 190
 191 source "net/Kconfig"
 192
 193 source "drivers/Kconfig"
 194
 195 source "fs/Kconfig"
 196
 197 source "security/Kconfig"
 198
 199 source "crypto/Kconfig"
 200
 201 source "lib/Kconfig"
 202
 203 menu "Kernel hacking"
 204
 205 source "lib/Kconfig.debug"
 206
 207 endmenu