1# SPDX-License-Identifier: GPL-2.0 2config M68K 3 bool 4 default y 5 select ARCH_HAS_SYNC_DMA_FOR_DEVICE if HAS_DMA 6 select ARCH_MIGHT_HAVE_PC_PARPORT if ISA 7 select ARCH_NO_COHERENT_DMA_MMAP if !MMU 8 select ARCH_NO_PREEMPT if !COLDFIRE 9 select HAVE_IDE 10 select HAVE_AOUT if MMU 11 select HAVE_DEBUG_BUGVERBOSE 12 select GENERIC_IRQ_SHOW 13 select GENERIC_ATOMIC64 14 select HAVE_UID16 15 select VIRT_TO_BUS 16 select ARCH_HAVE_NMI_SAFE_CMPXCHG if RMW_INSNS 17 select GENERIC_CPU_DEVICES 18 select GENERIC_IOMAP 19 select GENERIC_STRNCPY_FROM_USER if MMU 20 select GENERIC_STRNLEN_USER if MMU 21 select ARCH_WANT_IPC_PARSE_VERSION 22 select ARCH_USES_GETTIMEOFFSET if MMU && !COLDFIRE 23 select HAVE_FUTEX_CMPXCHG if MMU && FUTEX 24 select HAVE_MOD_ARCH_SPECIFIC 25 select MODULES_USE_ELF_REL 26 select MODULES_USE_ELF_RELA 27 select OLD_SIGSUSPEND3 28 select OLD_SIGACTION 29 select DMA_DIRECT_OPS if HAS_DMA 30 select ARCH_DISCARD_MEMBLOCK 31 32config CPU_BIG_ENDIAN 33 def_bool y 34 35config RWSEM_GENERIC_SPINLOCK 36 bool 37 default y 38 39config RWSEM_XCHGADD_ALGORITHM 40 bool 41 42config ARCH_HAS_ILOG2_U32 43 bool 44 45config ARCH_HAS_ILOG2_U64 46 bool 47 48config GENERIC_HWEIGHT 49 bool 50 default y 51 52config GENERIC_CALIBRATE_DELAY 53 bool 54 default y 55 56config GENERIC_CSUM 57 bool 58 59config TIME_LOW_RES 60 bool 61 default y 62 63config NO_IOPORT_MAP 64 def_bool y 65 66config NO_DMA 67 def_bool (MMU && SUN3) || (!MMU && !COLDFIRE) 68 69config ZONE_DMA 70 bool 71 default y 72 73config HZ 74 int 75 default 1000 if CLEOPATRA 76 default 100 77 78config PGTABLE_LEVELS 79 default 2 if SUN3 || COLDFIRE 80 default 3 81 82config MMU 83 bool "MMU-based Paged Memory Management Support" 84 default y 85 help 86 Select if you want MMU-based virtualised addressing space 87 support by paged memory management. If unsure, say 'Y'. 88 89config MMU_MOTOROLA 90 bool 91 92config MMU_COLDFIRE 93 bool 94 95config MMU_SUN3 96 bool 97 depends on MMU && !MMU_MOTOROLA && !MMU_COLDFIRE 98 99config KEXEC 100 bool "kexec system call" 101 depends on M68KCLASSIC 102 select KEXEC_CORE 103 help 104 kexec is a system call that implements the ability to shutdown your 105 current kernel, and to start another kernel. It is like a reboot 106 but it is independent of the system firmware. And like a reboot 107 you can start any kernel with it, not just Linux. 108 109 The name comes from the similarity to the exec system call. 110 111 It is an ongoing process to be certain the hardware in a machine 112 is properly shutdown, so do not be surprised if this code does not 113 initially work for you. As of this writing the exact hardware 114 interface is strongly in flux, so no good recommendation can be 115 made. 116 117config BOOTINFO_PROC 118 bool "Export bootinfo in procfs" 119 depends on KEXEC && M68KCLASSIC 120 help 121 Say Y to export the bootinfo used to boot the kernel in a 122 "bootinfo" file in procfs. This is useful with kexec. 123 124menu "Platform setup" 125 126source arch/m68k/Kconfig.cpu 127 128source arch/m68k/Kconfig.machine 129 130source arch/m68k/Kconfig.bus 131 132endmenu 133 134menu "Kernel Features" 135 136endmenu 137 138if !MMU 139menu "Power management options" 140 141config PM 142 bool "Power Management support" 143 help 144 Support processor power management modes 145 146endmenu 147endif 148 149source "arch/m68k/Kconfig.devices" 150