1 # SPDX-License-Identifier: GPL-2.0 1 # SPDX-License-Identifier: GPL-2.0
2 config M68K 2 config M68K
3 bool 3 bool
4 default y 4 default y
5 select ARCH_32BIT_OFF_T !! 5 select ARCH_HAS_SYNC_DMA_FOR_DEVICE if HAS_DMA
6 select ARCH_HAS_BINFMT_FLAT <<
7 select ARCH_HAS_CPU_CACHE_ALIASING <<
8 select ARCH_HAS_CPU_FINALIZE_INIT if M <<
9 select ARCH_HAS_CURRENT_STACK_POINTER <<
10 select ARCH_HAS_DMA_PREP_COHERENT if M <<
11 select ARCH_HAS_SYNC_DMA_FOR_DEVICE if <<
12 select ARCH_HAVE_NMI_SAFE_CMPXCHG if R <<
13 select ARCH_MIGHT_HAVE_PC_PARPORT if I 6 select ARCH_MIGHT_HAVE_PC_PARPORT if ISA
>> 7 select ARCH_NO_COHERENT_DMA_MMAP if !MMU
14 select ARCH_NO_PREEMPT if !COLDFIRE 8 select ARCH_NO_PREEMPT if !COLDFIRE
15 select ARCH_USE_MEMTEST if MMU_MOTOROL !! 9 select HAVE_IDE
16 select ARCH_WANT_IPC_PARSE_VERSION !! 10 select HAVE_AOUT if MMU
17 select BINFMT_FLAT_ARGVP_ENVP_ON_STACK !! 11 select HAVE_DEBUG_BUGVERBOSE
18 select DMA_DIRECT_REMAP if M68K_NONCOH !! 12 select GENERIC_IRQ_SHOW
19 select GENERIC_ATOMIC64 13 select GENERIC_ATOMIC64
>> 14 select HAVE_UID16
>> 15 select VIRT_TO_BUS
>> 16 select ARCH_HAVE_NMI_SAFE_CMPXCHG if RMW_INSNS
20 select GENERIC_CPU_DEVICES 17 select GENERIC_CPU_DEVICES
21 select GENERIC_IOMAP if HAS_IOPORT !! 18 select GENERIC_IOMAP
22 select GENERIC_IRQ_SHOW !! 19 select GENERIC_STRNCPY_FROM_USER if MMU
23 select GENERIC_LIB_ASHLDI3 !! 20 select GENERIC_STRNLEN_USER if MMU
24 select GENERIC_LIB_ASHRDI3 !! 21 select ARCH_WANT_IPC_PARSE_VERSION
25 select GENERIC_LIB_LSHRDI3 !! 22 select ARCH_USES_GETTIMEOFFSET if MMU && !COLDFIRE
26 select HAS_IOPORT if PCI || ISA || ATA !! 23 select HAVE_FUTEX_CMPXCHG if MMU && FUTEX
27 select HAVE_ARCH_SECCOMP <<
28 select HAVE_ARCH_SECCOMP_FILTER <<
29 select HAVE_ASM_MODVERSIONS <<
30 select HAVE_DEBUG_BUGVERBOSE <<
31 select HAVE_EFFICIENT_UNALIGNED_ACCESS <<
32 select HAVE_MOD_ARCH_SPECIFIC 24 select HAVE_MOD_ARCH_SPECIFIC
33 select HAVE_UID16 <<
34 select MMU_GATHER_NO_RANGE if MMU <<
35 select MODULES_USE_ELF_REL 25 select MODULES_USE_ELF_REL
36 select MODULES_USE_ELF_RELA 26 select MODULES_USE_ELF_RELA
37 select NO_DMA if !MMU && !COLDFIRE <<
38 select OLD_SIGACTION <<
39 select OLD_SIGSUSPEND3 27 select OLD_SIGSUSPEND3
40 select UACCESS_MEMCPY if !MMU !! 28 select OLD_SIGACTION
41 select ZONE_DMA !! 29 select ARCH_DISCARD_MEMBLOCK
42 30
43 config CPU_BIG_ENDIAN 31 config CPU_BIG_ENDIAN
44 def_bool y 32 def_bool y
45 33
>> 34 config RWSEM_GENERIC_SPINLOCK
>> 35 bool
>> 36 default y
>> 37
>> 38 config RWSEM_XCHGADD_ALGORITHM
>> 39 bool
>> 40
46 config ARCH_HAS_ILOG2_U32 41 config ARCH_HAS_ILOG2_U32
47 bool 42 bool
48 43
49 config ARCH_HAS_ILOG2_U64 44 config ARCH_HAS_ILOG2_U64
50 bool 45 bool
51 46
52 config GENERIC_HWEIGHT 47 config GENERIC_HWEIGHT
53 bool 48 bool
54 default y 49 default y
55 50
56 config GENERIC_CALIBRATE_DELAY 51 config GENERIC_CALIBRATE_DELAY
57 bool 52 bool
58 default y 53 default y
59 54
60 config GENERIC_CSUM 55 config GENERIC_CSUM
61 bool 56 bool
62 57
63 config TIME_LOW_RES 58 config TIME_LOW_RES
64 bool 59 bool
65 default y 60 default y
66 61
67 config NO_IOPORT_MAP 62 config NO_IOPORT_MAP
68 def_bool y 63 def_bool y
69 64
>> 65 config NO_DMA
>> 66 def_bool (MMU && SUN3) || (!MMU && !COLDFIRE)
>> 67
>> 68 config ZONE_DMA
>> 69 bool
>> 70 default y
>> 71
70 config HZ 72 config HZ
71 int 73 int
72 default 1000 if CLEOPATRA 74 default 1000 if CLEOPATRA
73 default 100 75 default 100
74 76
75 config PGTABLE_LEVELS 77 config PGTABLE_LEVELS
76 default 2 if SUN3 || COLDFIRE 78 default 2 if SUN3 || COLDFIRE
77 default 3 79 default 3
78 80
79 config MMU 81 config MMU
80 bool "MMU-based Paged Memory Managemen 82 bool "MMU-based Paged Memory Management Support"
81 default y 83 default y
82 help 84 help
83 Select if you want MMU-based virtual 85 Select if you want MMU-based virtualised addressing space
84 support by paged memory management. 86 support by paged memory management. If unsure, say 'Y'.
85 87
86 config MMU_MOTOROLA 88 config MMU_MOTOROLA
87 bool 89 bool
88 select HAVE_PAGE_SIZE_4KB <<
89 90
90 config MMU_COLDFIRE 91 config MMU_COLDFIRE
91 select HAVE_PAGE_SIZE_8KB <<
92 bool 92 bool
93 93
94 config MMU_SUN3 94 config MMU_SUN3
95 bool 95 bool
96 select HAVE_PAGE_SIZE_8KB <<
97 depends on MMU && !MMU_MOTOROLA && !MM 96 depends on MMU && !MMU_MOTOROLA && !MMU_COLDFIRE
98 97
99 config ARCH_SUPPORTS_KEXEC !! 98 config KEXEC
100 def_bool M68KCLASSIC && MMU !! 99 bool "kexec system call"
>> 100 depends on M68KCLASSIC
>> 101 select KEXEC_CORE
>> 102 help
>> 103 kexec is a system call that implements the ability to shutdown your
>> 104 current kernel, and to start another kernel. It is like a reboot
>> 105 but it is independent of the system firmware. And like a reboot
>> 106 you can start any kernel with it, not just Linux.
>> 107
>> 108 The name comes from the similarity to the exec system call.
>> 109
>> 110 It is an ongoing process to be certain the hardware in a machine
>> 111 is properly shutdown, so do not be surprised if this code does not
>> 112 initially work for you. As of this writing the exact hardware
>> 113 interface is strongly in flux, so no good recommendation can be
>> 114 made.
101 115
102 config BOOTINFO_PROC 116 config BOOTINFO_PROC
103 bool "Export bootinfo in procfs" 117 bool "Export bootinfo in procfs"
104 depends on KEXEC && M68KCLASSIC 118 depends on KEXEC && M68KCLASSIC
105 help 119 help
106 Say Y to export the bootinfo used to 120 Say Y to export the bootinfo used to boot the kernel in a
107 "bootinfo" file in procfs. This is 121 "bootinfo" file in procfs. This is useful with kexec.
108 122
109 menu "Platform setup" 123 menu "Platform setup"
110 124
111 source "arch/m68k/Kconfig.cpu" 125 source "arch/m68k/Kconfig.cpu"
112 126
113 source "arch/m68k/Kconfig.machine" 127 source "arch/m68k/Kconfig.machine"
114 128
115 source "arch/m68k/Kconfig.bus" 129 source "arch/m68k/Kconfig.bus"
116 130
117 endmenu 131 endmenu
118 132
119 menu "Kernel Features" 133 menu "Kernel Features"
120 134
121 endmenu 135 endmenu
122 136
123 if !MMU 137 if !MMU
124 menu "Power management options" 138 menu "Power management options"
125 139
126 config PM 140 config PM
127 bool "Power Management support" 141 bool "Power Management support"
128 help 142 help
129 Support processor power management m 143 Support processor power management modes
130 144
131 endmenu 145 endmenu
132 endif 146 endif
133 147
134 source "arch/m68k/Kconfig.devices" 148 source "arch/m68k/Kconfig.devices"
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