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 GENERIC_IOMAP
  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 GENERIC_CLOCKEVENTS
  51         def_bool y
  52
  53 config TRACE_IRQFLAGS_SUPPORT
  54         def_bool y
  55
  56 # For now, use generic checksum functions
  57 #These can be reimplemented in assembly later if so inclined
  58 config GENERIC_CSUM
  59         def_bool y
  60
  61 config GENERIC_FIND_NEXT_BIT
  62         def_bool y
  63
  64 source "init/Kconfig"
  65
  66
  67 menu "Processor type and features"
  68
  69 choice
  70         prompt "Subarchitecture"
  71         default OR1K_1200
  72
  73 config OR1K_1200
  74         bool "OR1200"
  75         help
  76           Generic OpenRISC 1200 architecture
  77
  78 endchoice
  79
  80 config OPENRISC_BUILTIN_DTB
  81         string "Builtin DTB"
  82         default ""
  83
  84 menu "Class II Instructions"
  85
  86 config OPENRISC_HAVE_INST_FF1
  87         bool "Have instruction l.ff1"
  88         default y
  89         help
  90           Select this if your implementation has the Class II instruction l.ff1
  91
  92 config OPENRISC_HAVE_INST_FL1
  93         bool "Have instruction l.fl1"
  94         default y
  95         help
  96           Select this if your implementation has the Class II instruction l.fl1
  97
  98 config OPENRISC_HAVE_INST_MUL
  99         bool "Have instruction l.mul for hardware multiply"
 100         default y
 101         help
 102           Select this if your implementation has a hardware multiply instruction
 103
 104 config OPENRISC_HAVE_INST_DIV
 105         bool "Have instruction l.div for hardware divide"
 106         default y
 107         help
 108           Select this if your implementation has a hardware divide instruction
 109 endmenu
 110
 111
 112 source "kernel/time/Kconfig"
 113 source kernel/Kconfig.hz
 114 source kernel/Kconfig.preempt
 115 source "mm/Kconfig"
 116
 117 config 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
 130 config 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
 139 menu "Debugging options"
 140
 141 config DEBUG_STACKOVERFLOW
 142         bool "Check for kernel stack overflow"
 143         default y
 144         help
 145           Make extra checks for space avaliable 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
 151 config 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
 160 config 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
 169 endmenu
 170
 171 endmenu
 172
 173 menu "Executable file formats"
 174
 175 source "fs/Kconfig.binfmt"
 176
 177 endmenu
 178
 179 source "net/Kconfig"
 180
 181 source "drivers/Kconfig"
 182
 183 source "fs/Kconfig"
 184
 185 source "security/Kconfig"
 186
 187 source "crypto/Kconfig"
 188
 189 source "lib/Kconfig"
 190
 191 menu "Kernel hacking"
 192
 193 source "lib/Kconfig.debug"
 194
 195 endmenu