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