1# SPDX-License-Identifier: GPL-2.0 2config 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_EFFICIENT_UNALIGNED_ACCESS if !CPU_HAS_NO_UNALIGNED 25 select HAVE_FUTEX_CMPXCHG if MMU && FUTEX 26 select HAVE_IDE 27 select HAVE_MOD_ARCH_SPECIFIC 28 select HAVE_UID16 29 select MMU_GATHER_NO_RANGE if MMU 30 select MODULES_USE_ELF_REL 31 select MODULES_USE_ELF_RELA 32 select NO_DMA if !MMU && !COLDFIRE 33 select OLD_SIGACTION 34 select OLD_SIGSUSPEND3 35 select SET_FS 36 select UACCESS_MEMCPY if !MMU 37 select VIRT_TO_BUS 38 select ZONE_DMA 39 40config CPU_BIG_ENDIAN 41 def_bool y 42 43config ARCH_HAS_ILOG2_U32 44 bool 45 46config ARCH_HAS_ILOG2_U64 47 bool 48 49config GENERIC_HWEIGHT 50 bool 51 default y 52 53config GENERIC_CALIBRATE_DELAY 54 bool 55 default y 56 57config GENERIC_CSUM 58 bool 59 60config TIME_LOW_RES 61 bool 62 default y 63 64config NO_IOPORT_MAP 65 def_bool y 66 67config HZ 68 int 69 default 1000 if CLEOPATRA 70 default 100 71 72config PGTABLE_LEVELS 73 default 2 if SUN3 || COLDFIRE 74 default 3 75 76config 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 83config MMU_MOTOROLA 84 bool 85 86config MMU_COLDFIRE 87 bool 88 89config MMU_SUN3 90 bool 91 depends on MMU && !MMU_MOTOROLA && !MMU_COLDFIRE 92 93config 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 111config 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 118menu "Platform setup" 119 120source "arch/m68k/Kconfig.cpu" 121 122source "arch/m68k/Kconfig.machine" 123 124source "arch/m68k/Kconfig.bus" 125 126endmenu 127 128menu "Kernel Features" 129 130endmenu 131 132if !MMU 133menu "Power management options" 134 135config PM 136 bool "Power Management support" 137 help 138 Support processor power management modes 139 140endmenu 141endif 142 143source "arch/m68k/Kconfig.devices" 144