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