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