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