linux/arch/openrisc/Kconfig
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   1#
   2# For a description of the syntax of this configuration file,
   3# see Documentation/kbuild/kconfig-language.txt.
   4#
   5
   6config OPENRISC
   7        def_bool y
   8        select OF
   9        select OF_EARLY_FLATTREE
  10        select IRQ_DOMAIN
  11        select HAVE_MEMBLOCK
  12        select ARCH_WANT_OPTIONAL_GPIOLIB
  13        select HAVE_ARCH_TRACEHOOK
  14        select HAVE_GENERIC_HARDIRQS
  15        select GENERIC_IRQ_CHIP
  16        select GENERIC_IRQ_PROBE
  17        select GENERIC_IRQ_SHOW
  18        select GENERIC_IOMAP
  19        select GENERIC_CPU_DEVICES
  20        select GENERIC_ATOMIC64
  21        select GENERIC_CLOCKEVENTS
  22        select GENERIC_STRNCPY_FROM_USER
  23        select GENERIC_STRNLEN_USER
  24        select MODULES_USE_ELF_RELA
  25
  26config MMU
  27        def_bool y
  28
  29config SYMBOL_PREFIX
  30        string
  31        default ""
  32
  33config HAVE_DMA_ATTRS
  34        def_bool y
  35
  36config UID16
  37        def_bool y
  38
  39config RWSEM_GENERIC_SPINLOCK
  40        def_bool y
  41
  42config RWSEM_XCHGADD_ALGORITHM
  43        def_bool n
  44
  45config GENERIC_HWEIGHT
  46        def_bool y
  47
  48config NO_IOPORT
  49        def_bool y
  50
  51config GENERIC_GPIO
  52        def_bool y
  53
  54config TRACE_IRQFLAGS_SUPPORT
  55        def_bool y
  56
  57# For now, use generic checksum functions
  58#These can be reimplemented in assembly later if so inclined
  59config GENERIC_CSUM
  60        def_bool y
  61
  62config GENERIC_FIND_NEXT_BIT
  63        def_bool y
  64
  65source "init/Kconfig"
  66
  67
  68menu "Processor type and features"
  69
  70choice
  71        prompt "Subarchitecture"
  72        default OR1K_1200
  73
  74config OR1K_1200
  75        bool "OR1200"
  76        help
  77          Generic OpenRISC 1200 architecture
  78
  79endchoice
  80
  81config OPENRISC_BUILTIN_DTB
  82        string "Builtin DTB"
  83        default ""
  84
  85menu "Class II Instructions"
  86
  87config OPENRISC_HAVE_INST_FF1
  88        bool "Have instruction l.ff1"
  89        default y
  90        help
  91          Select this if your implementation has the Class II instruction l.ff1
  92
  93config OPENRISC_HAVE_INST_FL1
  94        bool "Have instruction l.fl1"
  95        default y
  96        help
  97          Select this if your implementation has the Class II instruction l.fl1
  98
  99config OPENRISC_HAVE_INST_MUL
 100        bool "Have instruction l.mul for hardware multiply"
 101        default y
 102        help
 103          Select this if your implementation has a hardware multiply instruction
 104
 105config OPENRISC_HAVE_INST_DIV
 106        bool "Have instruction l.div for hardware divide"
 107        default y
 108        help
 109          Select this if your implementation has a hardware divide instruction
 110endmenu
 111
 112
 113source kernel/Kconfig.hz
 114source kernel/Kconfig.preempt
 115source "mm/Kconfig"
 116
 117config OPENRISC_NO_SPR_SR_DSX
 118        bool "use SPR_SR_DSX software emulation" if OR1K_1200
 119        default y
 120        help
 121          SPR_SR_DSX bit is status register bit indicating whether
 122          the last exception has happened in delay slot.
 123
 124          OpenRISC architecture makes it optional to have it implemented
 125          in hardware and the OR1200 does not have it.
 126
 127          Say N here if you know that your OpenRISC processor has
 128          SPR_SR_DSX bit implemented. Say Y if you are unsure.
 129
 130config CMDLINE
 131        string "Default kernel command string"
 132        default ""
 133        help
 134          On some architectures there is currently no way for the boot loader
 135          to pass arguments to the kernel. For these architectures, you should
 136          supply some command-line options at build time by entering them
 137          here.
 138
 139menu "Debugging options"
 140
 141config DEBUG_STACKOVERFLOW
 142        bool "Check for kernel stack overflow"
 143        default y
 144        help
 145          Make extra checks for space available on stack in some
 146          critical functions. This will cause kernel to run a bit slower,
 147          but will catch most of kernel stack overruns and exit gracefuly.
 148
 149          Say Y if you are unsure.
 150
 151config JUMP_UPON_UNHANDLED_EXCEPTION
 152        bool "Try to die gracefully"
 153        default y
 154        help
 155          Now this puts kernel into infinite loop after first oops. Till
 156          your kernel crashes this doesn't have any influence.
 157
 158          Say Y if you are unsure.
 159
 160config OPENRISC_ESR_EXCEPTION_BUG_CHECK
 161        bool "Check for possible ESR exception bug"
 162        default n
 163        help
 164          This option enables some checks that might expose some problems
 165          in kernel.
 166
 167          Say N if you are unsure.
 168
 169endmenu
 170
 171endmenu
 172
 173menu "Executable file formats"
 174
 175source "fs/Kconfig.binfmt"
 176
 177endmenu
 178
 179source "net/Kconfig"
 180
 181source "drivers/Kconfig"
 182
 183source "fs/Kconfig"
 184
 185source "security/Kconfig"
 186
 187source "crypto/Kconfig"
 188
 189source "lib/Kconfig"
 190
 191menu "Kernel hacking"
 192
 193source "lib/Kconfig.debug"
 194
 195endmenu
 196
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