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 ARCH_REQUIRE_GPIOLIB
  14         select HAVE_ARCH_TRACEHOOK
  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 HAVE_UID16
  21         select GENERIC_ATOMIC64
  22         select GENERIC_CLOCKEVENTS
  23         select GENERIC_STRNCPY_FROM_USER
  24         select GENERIC_STRNLEN_USER
  25         select MODULES_USE_ELF_RELA
  26         select HAVE_DEBUG_STACKOVERFLOW
  27         select OR1K_PIC
  28         select CPU_NO_EFFICIENT_FFS if !OPENRISC_HAVE_INST_FF1
  29
  30 config MMU
  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_MAP
  43         def_bool y
  44
  45 config TRACE_IRQFLAGS_SUPPORT
  46         def_bool y
  47
  48 # For now, use generic checksum functions
  49 #These can be reimplemented in assembly later if so inclined
  50 config GENERIC_CSUM
  51         def_bool y
  52
  53 source "init/Kconfig"
  54
  55 source "kernel/Kconfig.freezer"
  56
  57 menu "Processor type and features"
  58
  59 choice
  60         prompt "Subarchitecture"
  61         default OR1K_1200
  62
  63 config OR1K_1200
  64         bool "OR1200"
  65         help
  66           Generic OpenRISC 1200 architecture
  67
  68 endchoice
  69
  70 config OPENRISC_BUILTIN_DTB
  71         string "Builtin DTB"
  72         default ""
  73
  74 menu "Class II Instructions"
  75
  76 config OPENRISC_HAVE_INST_FF1
  77         bool "Have instruction l.ff1"
  78         default y
  79         help
  80           Select this if your implementation has the Class II instruction l.ff1
  81
  82 config OPENRISC_HAVE_INST_FL1
  83         bool "Have instruction l.fl1"
  84         default y
  85         help
  86           Select this if your implementation has the Class II instruction l.fl1
  87
  88 config OPENRISC_HAVE_INST_MUL
  89         bool "Have instruction l.mul for hardware multiply"
  90         default y
  91         help
  92           Select this if your implementation has a hardware multiply instruction
  93
  94 config OPENRISC_HAVE_INST_DIV
  95         bool "Have instruction l.div for hardware divide"
  96         default y
  97         help
  98           Select this if your implementation has a hardware divide instruction
  99 endmenu
 100
 101
 102 source kernel/Kconfig.hz
 103 source kernel/Kconfig.preempt
 104 source "mm/Kconfig"
 105
 106 config OPENRISC_NO_SPR_SR_DSX
 107         bool "use SPR_SR_DSX software emulation" if OR1K_1200
 108         default y
 109         help
 110           SPR_SR_DSX bit is status register bit indicating whether
 111           the last exception has happened in delay slot.
 112
 113           OpenRISC architecture makes it optional to have it implemented
 114           in hardware and the OR1200 does not have it.
 115
 116           Say N here if you know that your OpenRISC processor has
 117           SPR_SR_DSX bit implemented. Say Y if you are unsure.
 118
 119 config CMDLINE
 120         string "Default kernel command string"
 121         default ""
 122         help
 123           On some architectures there is currently no way for the boot loader
 124           to pass arguments to the kernel. For these architectures, you should
 125           supply some command-line options at build time by entering them
 126           here.
 127
 128 menu "Debugging options"
 129
 130 config JUMP_UPON_UNHANDLED_EXCEPTION
 131         bool "Try to die gracefully"
 132         default y
 133         help
 134           Now this puts kernel into infinite loop after first oops. Till
 135           your kernel crashes this doesn't have any influence.
 136
 137           Say Y if you are unsure.
 138
 139 config OPENRISC_ESR_EXCEPTION_BUG_CHECK
 140         bool "Check for possible ESR exception bug"
 141         default n
 142         help
 143           This option enables some checks that might expose some problems
 144           in kernel.
 145
 146           Say N if you are unsure.
 147
 148 endmenu
 149
 150 endmenu
 151
 152 menu "Executable file formats"
 153
 154 source "fs/Kconfig.binfmt"
 155
 156 endmenu
 157
 158 source "net/Kconfig"
 159
 160 source "drivers/Kconfig"
 161
 162 source "fs/Kconfig"
 163
 164 source "security/Kconfig"
 165
 166 source "crypto/Kconfig"
 167
 168 source "lib/Kconfig"
 169
 170 menu "Kernel hacking"
 171
 172 source "lib/Kconfig.debug"
 173
 174 endmenu