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