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_FUTEX_CMPXCHG if MMU && FUTEX 25 select HAVE_IDE 26 select HAVE_MOD_ARCH_SPECIFIC 27 select HAVE_UID16 28 select MMU_GATHER_NO_RANGE if MMU 29 select MODULES_USE_ELF_REL 30 select MODULES_USE_ELF_RELA 31 select NO_DMA if !MMU && !COLDFIRE 32 select OLD_SIGACTION 33 select OLD_SIGSUSPEND3 34 select SET_FS 35 select UACCESS_MEMCPY if !MMU 36 select VIRT_TO_BUS 37 38config CPU_BIG_ENDIAN 39 def_bool y 40 41config ARCH_HAS_ILOG2_U32 42 bool 43 44config ARCH_HAS_ILOG2_U64 45 bool 46 47config GENERIC_HWEIGHT 48 bool 49 default y 50 51config GENERIC_CALIBRATE_DELAY 52 bool 53 default y 54 55config GENERIC_CSUM 56 bool 57 58config TIME_LOW_RES 59 bool 60 default y 61 62config NO_IOPORT_MAP 63 def_bool y 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