arch/openrisc/Kconfig

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