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