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