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 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         select NO_BOOTMEM
  30
  31 config MMU
  32         def_bool y
  33
  34 config RWSEM_GENERIC_SPINLOCK
  35         def_bool y
  36
  37 config RWSEM_XCHGADD_ALGORITHM
  38         def_bool n
  39
  40 config GENERIC_HWEIGHT
  41         def_bool y
  42
  43 config NO_IOPORT_MAP
  44         def_bool y
  45
  46 config TRACE_IRQFLAGS_SUPPORT
  47         def_bool y
  48
  49 # For now, use generic checksum functions
  50 #These can be reimplemented in assembly later if so inclined
  51 config GENERIC_CSUM
  52         def_bool y
  53
  54 source "init/Kconfig"
  55
  56 source "kernel/Kconfig.freezer"
  57
  58 menu "Processor type and features"
  59
  60 choice
  61         prompt "Subarchitecture"
  62         default OR1K_1200
  63
  64 config OR1K_1200
  65         bool "OR1200"
  66         help
  67           Generic OpenRISC 1200 architecture
  68
  69 endchoice
  70
  71 config OPENRISC_BUILTIN_DTB
  72         string "Builtin DTB"
  73         default ""
  74
  75 menu "Class II Instructions"
  76
  77 config OPENRISC_HAVE_INST_FF1
  78         bool "Have instruction l.ff1"
  79         default y
  80         help
  81           Select this if your implementation has the Class II instruction l.ff1
  82
  83 config OPENRISC_HAVE_INST_FL1
  84         bool "Have instruction l.fl1"
  85         default y
  86         help
  87           Select this if your implementation has the Class II instruction l.fl1
  88
  89 config OPENRISC_HAVE_INST_MUL
  90         bool "Have instruction l.mul for hardware multiply"
  91         default y
  92         help
  93           Select this if your implementation has a hardware multiply instruction
  94
  95 config OPENRISC_HAVE_INST_DIV
  96         bool "Have instruction l.div for hardware divide"
  97         default y
  98         help
  99           Select this if your implementation has a hardware divide instruction
 100 endmenu
 101
 102 config NR_CPUS
 103         int
 104         default "1"
 105
 106 source kernel/Kconfig.hz
 107 source kernel/Kconfig.preempt
 108 source "mm/Kconfig"
 109
 110 config OPENRISC_NO_SPR_SR_DSX
 111         bool "use SPR_SR_DSX software emulation" if OR1K_1200
 112         default y
 113         help
 114           SPR_SR_DSX bit is status register bit indicating whether
 115           the last exception has happened in delay slot.
 116
 117           OpenRISC architecture makes it optional to have it implemented
 118           in hardware and the OR1200 does not have it.
 119
 120           Say N here if you know that your OpenRISC processor has
 121           SPR_SR_DSX bit implemented. Say Y if you are unsure.
 122
 123 config CMDLINE
 124         string "Default kernel command string"
 125         default ""
 126         help
 127           On some architectures there is currently no way for the boot loader
 128           to pass arguments to the kernel. For these architectures, you should
 129           supply some command-line options at build time by entering them
 130           here.
 131
 132 menu "Debugging options"
 133
 134 config JUMP_UPON_UNHANDLED_EXCEPTION
 135         bool "Try to die gracefully"
 136         default y
 137         help
 138           Now this puts kernel into infinite loop after first oops. Till
 139           your kernel crashes this doesn't have any influence.
 140
 141           Say Y if you are unsure.
 142
 143 config OPENRISC_ESR_EXCEPTION_BUG_CHECK
 144         bool "Check for possible ESR exception bug"
 145         default n
 146         help
 147           This option enables some checks that might expose some problems
 148           in kernel.
 149
 150           Say N if you are unsure.
 151
 152 endmenu
 153
 154 endmenu
 155
 156 menu "Executable file formats"
 157
 158 source "fs/Kconfig.binfmt"
 159
 160 endmenu
 161
 162 source "net/Kconfig"
 163
 164 source "drivers/Kconfig"
 165
 166 source "fs/Kconfig"
 167
 168 source "security/Kconfig"
 169
 170 source "crypto/Kconfig"
 171
 172 source "lib/Kconfig"
 173
 174 menu "Kernel hacking"
 175
 176 source "lib/Kconfig.debug"
 177
 178 endmenu