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 HANDLE_DOMAIN_IRQ
  12         select HAVE_MEMBLOCK
  13         select GPIOLIB
  14         select HAVE_ARCH_TRACEHOOK
  15         select SPARSE_IRQ
  16         select GENERIC_IRQ_CHIP
  17         select GENERIC_IRQ_PROBE
  18         select GENERIC_IRQ_SHOW
  19         select GENERIC_IOMAP
  20         select GENERIC_CPU_DEVICES
  21         select HAVE_UID16
  22         select GENERIC_ATOMIC64
  23         select GENERIC_CLOCKEVENTS
  24         select GENERIC_STRNCPY_FROM_USER
  25         select GENERIC_STRNLEN_USER
  26         select MODULES_USE_ELF_RELA
  27         select HAVE_DEBUG_STACKOVERFLOW
  28         select OR1K_PIC
  29         select CPU_NO_EFFICIENT_FFS if !OPENRISC_HAVE_INST_FF1
  30         select NO_BOOTMEM
  31
  32 config CPU_BIG_ENDIAN
  33         def_bool y
  34
  35 config MMU
  36         def_bool y
  37
  38 config RWSEM_GENERIC_SPINLOCK
  39         def_bool y
  40
  41 config RWSEM_XCHGADD_ALGORITHM
  42         def_bool n
  43
  44 config GENERIC_HWEIGHT
  45         def_bool y
  46
  47 config NO_IOPORT_MAP
  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 source "init/Kconfig"
  59
  60 source "kernel/Kconfig.freezer"
  61
  62 menu "Processor type and features"
  63
  64 choice
  65         prompt "Subarchitecture"
  66         default OR1K_1200
  67
  68 config OR1K_1200
  69         bool "OR1200"
  70         help
  71           Generic OpenRISC 1200 architecture
  72
  73 endchoice
  74
  75 config OPENRISC_BUILTIN_DTB
  76         string "Builtin DTB"
  77         default ""
  78
  79 menu "Class II Instructions"
  80
  81 config OPENRISC_HAVE_INST_FF1
  82         bool "Have instruction l.ff1"
  83         default y
  84         help
  85           Select this if your implementation has the Class II instruction l.ff1
  86
  87 config OPENRISC_HAVE_INST_FL1
  88         bool "Have instruction l.fl1"
  89         default y
  90         help
  91           Select this if your implementation has the Class II instruction l.fl1
  92
  93 config OPENRISC_HAVE_INST_MUL
  94         bool "Have instruction l.mul for hardware multiply"
  95         default y
  96         help
  97           Select this if your implementation has a hardware multiply instruction
  98
  99 config OPENRISC_HAVE_INST_DIV
 100         bool "Have instruction l.div for hardware divide"
 101         default y
 102         help
 103           Select this if your implementation has a hardware divide instruction
 104 endmenu
 105
 106 config NR_CPUS
 107         int
 108         default "1"
 109
 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 JUMP_UPON_UNHANDLED_EXCEPTION
 139         bool "Try to die gracefully"
 140         default y
 141         help
 142           Now this puts kernel into infinite loop after first oops. Till
 143           your kernel crashes this doesn't have any influence.
 144
 145           Say Y if you are unsure.
 146
 147 config OPENRISC_ESR_EXCEPTION_BUG_CHECK
 148         bool "Check for possible ESR exception bug"
 149         default n
 150         help
 151           This option enables some checks that might expose some problems
 152           in kernel.
 153
 154           Say N if you are unsure.
 155
 156 endmenu
 157
 158 endmenu
 159
 160 menu "Executable file formats"
 161
 162 source "fs/Kconfig.binfmt"
 163
 164 endmenu
 165
 166 source "net/Kconfig"
 167
 168 source "drivers/Kconfig"
 169
 170 source "fs/Kconfig"
 171
 172 source "security/Kconfig"
 173
 174 source "crypto/Kconfig"
 175
 176 source "lib/Kconfig"
 177
 178 menu "Kernel hacking"
 179
 180 source "lib/Kconfig.debug"
 181
 182 endmenu