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 HAVE_AOUT if MMU
  20         select HAVE_ASM_MODVERSIONS
  21         select HAVE_DEBUG_BUGVERBOSE
  22         select HAVE_EFFICIENT_UNALIGNED_ACCESS if !CPU_HAS_NO_UNALIGNED
  23         select HAVE_FUTEX_CMPXCHG if MMU && FUTEX
  24         select HAVE_MOD_ARCH_SPECIFIC
  25         select HAVE_UID16
  26         select MMU_GATHER_NO_RANGE if MMU
  27         select MODULES_USE_ELF_REL
  28         select MODULES_USE_ELF_RELA
  29         select NO_DMA if !MMU && !COLDFIRE
  30         select OLD_SIGACTION
  31         select OLD_SIGSUSPEND3
  32         select UACCESS_MEMCPY if !MMU
  33         select VIRT_TO_BUS
  34         select ZONE_DMA
  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 HZ
  64         int
  65         default 1000 if CLEOPATRA
  66         default 100
  67
  68 config PGTABLE_LEVELS
  69         default 2 if SUN3 || COLDFIRE
  70         default 3
  71
  72 config MMU
  73         bool "MMU-based Paged Memory Management Support"
  74         default y
  75         help
  76           Select if you want MMU-based virtualised addressing space
  77           support by paged memory management. If unsure, say 'Y'.
  78
  79 config MMU_MOTOROLA
  80         bool
  81
  82 config MMU_COLDFIRE
  83         bool
  84
  85 config MMU_SUN3
  86         bool
  87         depends on MMU && !MMU_MOTOROLA && !MMU_COLDFIRE
  88
  89 config KEXEC
  90         bool "kexec system call"
  91         depends on M68KCLASSIC
  92         select KEXEC_CORE
  93         help
  94           kexec is a system call that implements the ability to shutdown your
  95           current kernel, and to start another kernel.  It is like a reboot
  96           but it is independent of the system firmware.   And like a reboot
  97           you can start any kernel with it, not just Linux.
  98
  99           The name comes from the similarity to the exec system call.
 100
 101           It is an ongoing process to be certain the hardware in a machine
 102           is properly shutdown, so do not be surprised if this code does not
 103           initially work for you.  As of this writing the exact hardware
 104           interface is strongly in flux, so no good recommendation can be
 105           made.
 106
 107 config BOOTINFO_PROC
 108         bool "Export bootinfo in procfs"
 109         depends on KEXEC && M68KCLASSIC
 110         help
 111           Say Y to export the bootinfo used to boot the kernel in a
 112           "bootinfo" file in procfs.  This is useful with kexec.
 113
 114 menu "Platform setup"
 115
 116 source "arch/m68k/Kconfig.cpu"
 117
 118 source "arch/m68k/Kconfig.machine"
 119
 120 source "arch/m68k/Kconfig.bus"
 121
 122 endmenu
 123
 124 menu "Kernel Features"
 125
 126 endmenu
 127
 128 if !MMU
 129 menu "Power management options"
 130
 131 config PM
 132         bool "Power Management support"
 133         help
 134           Support processor power management modes
 135
 136 endmenu
 137 endif
 138
 139 source "arch/m68k/Kconfig.devices"