1# SPDX-License-Identifier: GPL-2.0 2config M68K 3 bool 4 default y 5 select ARCH_HAS_SYNC_DMA_FOR_DEVICE if HAS_DMA 6 select ARCH_MIGHT_HAVE_PC_PARPORT if ISA 7 select ARCH_NO_COHERENT_DMA_MMAP if !MMU 8 select ARCH_NO_PREEMPT if !COLDFIRE 9 select HAVE_IDE 10 select HAVE_AOUT if MMU 11 select HAVE_DEBUG_BUGVERBOSE 12 select GENERIC_IRQ_SHOW 13 select GENERIC_ATOMIC64 14 select HAVE_UID16 15 select VIRT_TO_BUS 16 select ARCH_HAVE_NMI_SAFE_CMPXCHG if RMW_INSNS 17 select GENERIC_CPU_DEVICES 18 select GENERIC_IOMAP 19 select GENERIC_STRNCPY_FROM_USER if MMU 20 select GENERIC_STRNLEN_USER if MMU 21 select ARCH_WANT_IPC_PARSE_VERSION 22 select ARCH_USES_GETTIMEOFFSET if MMU && !COLDFIRE 23 select HAVE_FUTEX_CMPXCHG if MMU && FUTEX 24 select HAVE_MOD_ARCH_SPECIFIC 25 select MODULES_USE_ELF_REL 26 select MODULES_USE_ELF_RELA 27 select OLD_SIGSUSPEND3 28 select OLD_SIGACTION 29 select DMA_NONCOHERENT_OPS if HAS_DMA 30 select HAVE_MEMBLOCK 31 select ARCH_DISCARD_MEMBLOCK 32 select NO_BOOTMEM 33 34config CPU_BIG_ENDIAN 35 def_bool y 36 37config RWSEM_GENERIC_SPINLOCK 38 bool 39 default y 40 41config RWSEM_XCHGADD_ALGORITHM 42 bool 43 44config ARCH_HAS_ILOG2_U32 45 bool 46 47config ARCH_HAS_ILOG2_U64 48 bool 49 50config GENERIC_HWEIGHT 51 bool 52 default y 53 54config GENERIC_CALIBRATE_DELAY 55 bool 56 default y 57 58config GENERIC_CSUM 59 bool 60 61config TIME_LOW_RES 62 bool 63 default y 64 65config NO_IOPORT_MAP 66 def_bool y 67 68config NO_DMA 69 def_bool (MMU && SUN3) || (!MMU && !COLDFIRE) 70 71config ZONE_DMA 72 bool 73 default y 74 75config HZ 76 int 77 default 1000 if CLEOPATRA 78 default 100 79 80config PGTABLE_LEVELS 81 default 2 if SUN3 || COLDFIRE 82 default 3 83 84config MMU 85 bool "MMU-based Paged Memory Management Support" 86 default y 87 help 88 Select if you want MMU-based virtualised addressing space 89 support by paged memory management. If unsure, say 'Y'. 90 91config MMU_MOTOROLA 92 bool 93 94config MMU_COLDFIRE 95 bool 96 97config MMU_SUN3 98 bool 99 depends on MMU && !MMU_MOTOROLA && !MMU_COLDFIRE 100 101config KEXEC 102 bool "kexec system call" 103 depends on M68KCLASSIC 104 select KEXEC_CORE 105 help 106 kexec is a system call that implements the ability to shutdown your 107 current kernel, and to start another kernel. It is like a reboot 108 but it is independent of the system firmware. And like a reboot 109 you can start any kernel with it, not just Linux. 110 111 The name comes from the similarity to the exec system call. 112 113 It is an ongoing process to be certain the hardware in a machine 114 is properly shutdown, so do not be surprised if this code does not 115 initially work for you. As of this writing the exact hardware 116 interface is strongly in flux, so no good recommendation can be 117 made. 118 119config BOOTINFO_PROC 120 bool "Export bootinfo in procfs" 121 depends on KEXEC && M68KCLASSIC 122 help 123 Say Y to export the bootinfo used to boot the kernel in a 124 "bootinfo" file in procfs. This is useful with kexec. 125 126menu "Platform setup" 127 128source arch/m68k/Kconfig.cpu 129 130source arch/m68k/Kconfig.machine 131 132source arch/m68k/Kconfig.bus 133 134endmenu 135 136menu "Kernel Features" 137 138endmenu 139 140if !MMU 141menu "Power management options" 142 143config PM 144 bool "Power Management support" 145 help 146 Support processor power management modes 147 148endmenu 149endif 150 151source "arch/m68k/Kconfig.devices" 152