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 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/Kconfig.hz
 110 source kernel/Kconfig.preempt
 111 source "mm/Kconfig"
 112
 113 config OPENRISC_NO_SPR_SR_DSX
 114         bool "use SPR_SR_DSX software emulation" if OR1K_1200
 115         default y
 116         help
 117           SPR_SR_DSX bit is status register bit indicating whether
 118           the last exception has happened in delay slot.
 119
 120           OpenRISC architecture makes it optional to have it implemented
 121           in hardware and the OR1200 does not have it.
 122
 123           Say N here if you know that your OpenRISC processor has
 124           SPR_SR_DSX bit implemented. Say Y if you are unsure.
 125
 126 config CMDLINE
 127         string "Default kernel command string"
 128         default ""
 129         help
 130           On some architectures there is currently no way for the boot loader
 131           to pass arguments to the kernel. For these architectures, you should
 132           supply some command-line options at build time by entering them
 133           here.
 134
 135 menu "Debugging options"
 136
 137 config DEBUG_STACKOVERFLOW
 138         bool "Check for kernel stack overflow"
 139         default y
 140         help
 141           Make extra checks for space available on stack in some
 142           critical functions. This will cause kernel to run a bit slower,
 143           but will catch most of kernel stack overruns and exit gracefully.
 144
 145           Say Y if you are unsure.
 146
 147 config JUMP_UPON_UNHANDLED_EXCEPTION
 148         bool "Try to die gracefully"
 149         default y
 150         help
 151           Now this puts kernel into infinite loop after first oops. Till
 152           your kernel crashes this doesn't have any influence.
 153
 154           Say Y if you are unsure.
 155
 156 config OPENRISC_ESR_EXCEPTION_BUG_CHECK
 157         bool "Check for possible ESR exception bug"
 158         default n
 159         help
 160           This option enables some checks that might expose some problems
 161           in kernel.
 162
 163           Say N if you are unsure.
 164
 165 endmenu
 166
 167 endmenu
 168
 169 menu "Executable file formats"
 170
 171 source "fs/Kconfig.binfmt"
 172
 173 endmenu
 174
 175 source "net/Kconfig"
 176
 177 source "drivers/Kconfig"
 178
 179 source "fs/Kconfig"
 180
 181 source "security/Kconfig"
 182
 183 source "crypto/Kconfig"
 184
 185 source "lib/Kconfig"
 186
 187 menu "Kernel hacking"
 188
 189 source "lib/Kconfig.debug"
 190
 191 endmenu