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_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
  26 config MMU
  27         def_bool y
  28
  29 config SYMBOL_PREFIX
  30         string
  31         default ""
  32
  33 config HAVE_DMA_ATTRS
  34         def_bool y
  35
  36 config UID16
  37         def_bool y
  38
  39 config RWSEM_GENERIC_SPINLOCK
  40         def_bool y
  41
  42 config RWSEM_XCHGADD_ALGORITHM
  43         def_bool n
  44
  45 config GENERIC_HWEIGHT
  46         def_bool y
  47
  48 config NO_IOPORT
  49         def_bool y
  50
  51 config GENERIC_GPIO
  52         def_bool y
  53
  54 config 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
  59 config GENERIC_CSUM
  60         def_bool y
  61
  62 config GENERIC_FIND_NEXT_BIT
  63         def_bool y
  64
  65 source "init/Kconfig"
  66
  67
  68 menu "Processor type and features"
  69
  70 choice
  71         prompt "Subarchitecture"
  72         default OR1K_1200
  73
  74 config OR1K_1200
  75         bool "OR1200"
  76         help
  77           Generic OpenRISC 1200 architecture
  78
  79 endchoice
  80
  81 config OPENRISC_BUILTIN_DTB
  82         string "Builtin DTB"
  83         default ""
  84
  85 menu "Class II Instructions"
  86
  87 config 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
  93 config 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
  99 config 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
 105 config 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
 110 endmenu
 111
 112
 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 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
 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