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