arch/m68k/Kconfig

   1 # SPDX-License-Identifier: GPL-2.0
   2 config M68K
   3         bool
   4         default y
   5         select ARCH_32BIT_OFF_T
   6         select ARCH_HAS_BINFMT_FLAT
   7         select ARCH_HAS_DMA_PREP_COHERENT if HAS_DMA && MMU && !COLDFIRE
   8         select ARCH_HAS_SYNC_DMA_FOR_DEVICE if HAS_DMA
   9         select ARCH_HAVE_NMI_SAFE_CMPXCHG if RMW_INSNS
  10         select ARCH_MIGHT_HAVE_PC_PARPORT if ISA
  11         select ARCH_NO_PREEMPT if !COLDFIRE
  12         select ARCH_WANT_IPC_PARSE_VERSION
  13         select BINFMT_FLAT_ARGVP_ENVP_ON_STACK
  14         select DMA_DIRECT_REMAP if HAS_DMA && MMU && !COLDFIRE
  15         select GENERIC_ATOMIC64
  16         select GENERIC_CPU_DEVICES
  17         select GENERIC_IOMAP
  18         select GENERIC_IRQ_SHOW
  19         select GENERIC_STRNCPY_FROM_USER if MMU
  20         select GENERIC_STRNLEN_USER if MMU
  21         select HAVE_AOUT if MMU
  22         select HAVE_ASM_MODVERSIONS
  23         select HAVE_DEBUG_BUGVERBOSE
  24         select HAVE_FUTEX_CMPXCHG if MMU && FUTEX
  25         select HAVE_IDE
  26         select HAVE_MOD_ARCH_SPECIFIC
  27         select HAVE_UID16
  28         select MMU_GATHER_NO_RANGE if MMU
  29         select MODULES_USE_ELF_REL
  30         select MODULES_USE_ELF_RELA
  31         select NO_DMA if !MMU && !COLDFIRE
  32         select OLD_SIGACTION
  33         select OLD_SIGSUSPEND3
  34         select VIRT_TO_BUS
  35
  36 config CPU_BIG_ENDIAN
  37         def_bool y
  38
  39 config ARCH_HAS_ILOG2_U32
  40         bool
  41
  42 config ARCH_HAS_ILOG2_U64
  43         bool
  44
  45 config GENERIC_HWEIGHT
  46         bool
  47         default y
  48
  49 config GENERIC_CALIBRATE_DELAY
  50         bool
  51         default y
  52
  53 config GENERIC_CSUM
  54         bool
  55
  56 config TIME_LOW_RES
  57         bool
  58         default y
  59
  60 config NO_IOPORT_MAP
  61         def_bool y
  62
  63 config ZONE_DMA
  64         bool
  65         default y
  66
  67 config HZ
  68         int
  69         default 1000 if CLEOPATRA
  70         default 100
  71
  72 config PGTABLE_LEVELS
  73         default 2 if SUN3 || COLDFIRE
  74         default 3
  75
  76 config MMU
  77         bool "MMU-based Paged Memory Management Support"
  78         default y
  79         help
  80           Select if you want MMU-based virtualised addressing space
  81           support by paged memory management. If unsure, say 'Y'.
  82
  83 config MMU_MOTOROLA
  84         bool
  85
  86 config MMU_COLDFIRE
  87         bool
  88
  89 config MMU_SUN3
  90         bool
  91         depends on MMU && !MMU_MOTOROLA && !MMU_COLDFIRE
  92
  93 config KEXEC
  94         bool "kexec system call"
  95         depends on M68KCLASSIC
  96         select KEXEC_CORE
  97         help
  98           kexec is a system call that implements the ability to shutdown your
  99           current kernel, and to start another kernel.  It is like a reboot
 100           but it is independent of the system firmware.   And like a reboot
 101           you can start any kernel with it, not just Linux.
 102
 103           The name comes from the similarity to the exec system call.
 104
 105           It is an ongoing process to be certain the hardware in a machine
 106           is properly shutdown, so do not be surprised if this code does not
 107           initially work for you.  As of this writing the exact hardware
 108           interface is strongly in flux, so no good recommendation can be
 109           made.
 110
 111 config BOOTINFO_PROC
 112         bool "Export bootinfo in procfs"
 113         depends on KEXEC && M68KCLASSIC
 114         help
 115           Say Y to export the bootinfo used to boot the kernel in a
 116           "bootinfo" file in procfs.  This is useful with kexec.
 117
 118 menu "Platform setup"
 119
 120 source "arch/m68k/Kconfig.cpu"
 121
 122 source "arch/m68k/Kconfig.machine"
 123
 124 source "arch/m68k/Kconfig.bus"
 125
 126 endmenu
 127
 128 menu "Kernel Features"
 129
 130 endmenu
 131
 132 if !MMU
 133 menu "Power management options"
 134
 135 config PM
 136         bool "Power Management support"
 137         help
 138           Support processor power management modes
 139
 140 endmenu
 141 endif
 142
 143 source "arch/m68k/Kconfig.devices"