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_MIGHT_HAVE_PC_PARPORT if ISA
  10         select ARCH_NO_PREEMPT if !COLDFIRE
  11         select BINFMT_FLAT_ARGVP_ENVP_ON_STACK
  12         select DMA_DIRECT_REMAP if HAS_DMA && MMU && !COLDFIRE
  13         select HAVE_IDE
  14         select HAVE_AOUT if MMU
  15         select HAVE_ASM_MODVERSIONS
  16         select HAVE_DEBUG_BUGVERBOSE
  17         select HAVE_COPY_THREAD_TLS
  18         select GENERIC_IRQ_SHOW
  19         select GENERIC_ATOMIC64
  20         select HAVE_UID16
  21         select VIRT_TO_BUS
  22         select ARCH_HAVE_NMI_SAFE_CMPXCHG if RMW_INSNS
  23         select GENERIC_CPU_DEVICES
  24         select GENERIC_IOMAP
  25         select GENERIC_STRNCPY_FROM_USER if MMU
  26         select GENERIC_STRNLEN_USER if MMU
  27         select ARCH_WANT_IPC_PARSE_VERSION
  28         select HAVE_FUTEX_CMPXCHG if MMU && FUTEX
  29         select HAVE_MOD_ARCH_SPECIFIC
  30         select MODULES_USE_ELF_REL
  31         select MODULES_USE_ELF_RELA
  32         select OLD_SIGSUSPEND3
  33         select OLD_SIGACTION
  34         select MMU_GATHER_NO_RANGE if MMU
  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 NO_DMA
  64         def_bool (MMU && SUN3) || (!MMU && !COLDFIRE)
  65
  66 config ZONE_DMA
  67         bool
  68         default y
  69
  70 config HZ
  71         int
  72         default 1000 if CLEOPATRA
  73         default 100
  74
  75 config PGTABLE_LEVELS
  76         default 2 if SUN3 || COLDFIRE
  77         default 3
  78
  79 config MMU
  80         bool "MMU-based Paged Memory Management Support"
  81         default y
  82         help
  83           Select if you want MMU-based virtualised addressing space
  84           support by paged memory management. If unsure, say 'Y'.
  85
  86 config MMU_MOTOROLA
  87         bool
  88
  89 config MMU_COLDFIRE
  90         bool
  91
  92 config MMU_SUN3
  93         bool
  94         depends on MMU && !MMU_MOTOROLA && !MMU_COLDFIRE
  95
  96 config KEXEC
  97         bool "kexec system call"
  98         depends on M68KCLASSIC
  99         select KEXEC_CORE
 100         help
 101           kexec is a system call that implements the ability to shutdown your
 102           current kernel, and to start another kernel.  It is like a reboot
 103           but it is independent of the system firmware.   And like a reboot
 104           you can start any kernel with it, not just Linux.
 105
 106           The name comes from the similarity to the exec system call.
 107
 108           It is an ongoing process to be certain the hardware in a machine
 109           is properly shutdown, so do not be surprised if this code does not
 110           initially work for you.  As of this writing the exact hardware
 111           interface is strongly in flux, so no good recommendation can be
 112           made.
 113
 114 config BOOTINFO_PROC
 115         bool "Export bootinfo in procfs"
 116         depends on KEXEC && M68KCLASSIC
 117         help
 118           Say Y to export the bootinfo used to boot the kernel in a
 119           "bootinfo" file in procfs.  This is useful with kexec.
 120
 121 menu "Platform setup"
 122
 123 source "arch/m68k/Kconfig.cpu"
 124
 125 source "arch/m68k/Kconfig.machine"
 126
 127 source "arch/m68k/Kconfig.bus"
 128
 129 endmenu
 130
 131 menu "Kernel Features"
 132
 133 endmenu
 134
 135 if !MMU
 136 menu "Power management options"
 137
 138 config PM
 139         bool "Power Management support"
 140         help
 141           Support processor power management modes
 142
 143 endmenu
 144 endif
 145
 146 source "arch/m68k/Kconfig.devices"