arch/openrisc/Kconfig

   1 # SPDX-License-Identifier: GPL-2.0
   2 #
   3 # For a description of the syntax of this configuration file,
   4 # see Documentation/kbuild/kconfig-language.txt.
   5 #
   6
   7 config OPENRISC
   8         def_bool y
   9         select OF
  10         select OF_EARLY_FLATTREE
  11         select IRQ_DOMAIN
  12         select HANDLE_DOMAIN_IRQ
  13         select HAVE_MEMBLOCK
  14         select GPIOLIB
  15         select HAVE_ARCH_TRACEHOOK
  16         select SPARSE_IRQ
  17         select GENERIC_IRQ_CHIP
  18         select GENERIC_IRQ_PROBE
  19         select GENERIC_IRQ_SHOW
  20         select GENERIC_IOMAP
  21         select GENERIC_CPU_DEVICES
  22         select HAVE_UID16
  23         select GENERIC_ATOMIC64
  24         select GENERIC_CLOCKEVENTS
  25         select GENERIC_STRNCPY_FROM_USER
  26         select GENERIC_STRNLEN_USER
  27         select MODULES_USE_ELF_RELA
  28         select HAVE_DEBUG_STACKOVERFLOW
  29         select OR1K_PIC
  30         select CPU_NO_EFFICIENT_FFS if !OPENRISC_HAVE_INST_FF1
  31         select NO_BOOTMEM
  32
  33 config CPU_BIG_ENDIAN
  34         def_bool y
  35
  36 config MMU
  37         def_bool y
  38
  39 config RWSEM_GENERIC_SPINLOCK
  40         def_bool y
  41
  42 config RWSEM_XCHGADD_ALGORITHM
  43         def_bool n
  44
  45 config GENERIC_HWEIGHT
  46         def_bool y
  47
  48 config NO_IOPORT_MAP
  49         def_bool y
  50
  51 config TRACE_IRQFLAGS_SUPPORT
  52         def_bool y
  53
  54 # For now, use generic checksum functions
  55 #These can be reimplemented in assembly later if so inclined
  56 config GENERIC_CSUM
  57         def_bool y
  58
  59 source "init/Kconfig"
  60
  61 source "kernel/Kconfig.freezer"
  62
  63 menu "Processor type and features"
  64
  65 choice
  66         prompt "Subarchitecture"
  67         default OR1K_1200
  68
  69 config OR1K_1200
  70         bool "OR1200"
  71         help
  72           Generic OpenRISC 1200 architecture
  73
  74 endchoice
  75
  76 config OPENRISC_BUILTIN_DTB
  77         string "Builtin DTB"
  78         default ""
  79
  80 menu "Class II Instructions"
  81
  82 config OPENRISC_HAVE_INST_FF1
  83         bool "Have instruction l.ff1"
  84         default y
  85         help
  86           Select this if your implementation has the Class II instruction l.ff1
  87
  88 config OPENRISC_HAVE_INST_FL1
  89         bool "Have instruction l.fl1"
  90         default y
  91         help
  92           Select this if your implementation has the Class II instruction l.fl1
  93
  94 config OPENRISC_HAVE_INST_MUL
  95         bool "Have instruction l.mul for hardware multiply"
  96         default y
  97         help
  98           Select this if your implementation has a hardware multiply instruction
  99
 100 config OPENRISC_HAVE_INST_DIV
 101         bool "Have instruction l.div for hardware divide"
 102         default y
 103         help
 104           Select this if your implementation has a hardware divide instruction
 105 endmenu
 106
 107 config NR_CPUS
 108         int
 109         default "1"
 110
 111 source kernel/Kconfig.hz
 112 source kernel/Kconfig.preempt
 113 source "mm/Kconfig"
 114
 115 config OPENRISC_NO_SPR_SR_DSX
 116         bool "use SPR_SR_DSX software emulation" if OR1K_1200
 117         default y
 118         help
 119           SPR_SR_DSX bit is status register bit indicating whether
 120           the last exception has happened in delay slot.
 121
 122           OpenRISC architecture makes it optional to have it implemented
 123           in hardware and the OR1200 does not have it.
 124
 125           Say N here if you know that your OpenRISC processor has
 126           SPR_SR_DSX bit implemented. Say Y if you are unsure.
 127
 128 config CMDLINE
 129         string "Default kernel command string"
 130         default ""
 131         help
 132           On some architectures there is currently no way for the boot loader
 133           to pass arguments to the kernel. For these architectures, you should
 134           supply some command-line options at build time by entering them
 135           here.
 136
 137 menu "Debugging options"
 138
 139 config JUMP_UPON_UNHANDLED_EXCEPTION
 140         bool "Try to die gracefully"
 141         default y
 142         help
 143           Now this puts kernel into infinite loop after first oops. Till
 144           your kernel crashes this doesn't have any influence.
 145
 146           Say Y if you are unsure.
 147
 148 config OPENRISC_ESR_EXCEPTION_BUG_CHECK
 149         bool "Check for possible ESR exception bug"
 150         default n
 151         help
 152           This option enables some checks that might expose some problems
 153           in kernel.
 154
 155           Say N if you are unsure.
 156
 157 endmenu
 158
 159 endmenu
 160
 161 menu "Executable file formats"
 162
 163 source "fs/Kconfig.binfmt"
 164
 165 endmenu
 166
 167 source "net/Kconfig"
 168
 169 source "drivers/Kconfig"
 170
 171 source "fs/Kconfig"
 172
 173 source "security/Kconfig"
 174
 175 source "crypto/Kconfig"
 176
 177 source "lib/Kconfig"
 178
 179 menu "Kernel hacking"
 180
 181 source "lib/Kconfig.debug"
 182
 183 endmenu