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