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_32BIT_OFF_T
6 select ARCH_HAS_BINFMT_FLAT 6 select ARCH_HAS_BINFMT_FLAT
7 select ARCH_HAS_CPU_CACHE_ALIASING !! 7 select ARCH_HAS_DMA_PREP_COHERENT if HAS_DMA && MMU && !COLDFIRE
8 select ARCH_HAS_CPU_FINALIZE_INIT if M !! 8 select ARCH_HAS_SYNC_DMA_FOR_DEVICE if HAS_DMA
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 9 select ARCH_MIGHT_HAVE_PC_PARPORT if ISA
14 select ARCH_NO_PREEMPT if !COLDFIRE 10 select ARCH_NO_PREEMPT if !COLDFIRE
15 select ARCH_USE_MEMTEST if MMU_MOTOROL <<
16 select ARCH_WANT_IPC_PARSE_VERSION <<
17 select BINFMT_FLAT_ARGVP_ENVP_ON_STACK 11 select BINFMT_FLAT_ARGVP_ENVP_ON_STACK
18 select DMA_DIRECT_REMAP if M68K_NONCOH !! 12 select DMA_DIRECT_REMAP if HAS_DMA && MMU && !COLDFIRE
19 select GENERIC_ATOMIC64 !! 13 select HAVE_IDE
20 select GENERIC_CPU_DEVICES !! 14 select HAVE_AOUT if MMU
21 select GENERIC_IOMAP if HAS_IOPORT <<
22 select GENERIC_IRQ_SHOW <<
23 select GENERIC_LIB_ASHLDI3 <<
24 select GENERIC_LIB_ASHRDI3 <<
25 select GENERIC_LIB_LSHRDI3 <<
26 select HAS_IOPORT if PCI || ISA || ATA <<
27 select HAVE_ARCH_SECCOMP <<
28 select HAVE_ARCH_SECCOMP_FILTER <<
29 select HAVE_ASM_MODVERSIONS 15 select HAVE_ASM_MODVERSIONS
30 select HAVE_DEBUG_BUGVERBOSE 16 select HAVE_DEBUG_BUGVERBOSE
31 select HAVE_EFFICIENT_UNALIGNED_ACCESS !! 17 select GENERIC_IRQ_SHOW
32 select HAVE_MOD_ARCH_SPECIFIC !! 18 select GENERIC_ATOMIC64
33 select HAVE_UID16 19 select HAVE_UID16
34 select MMU_GATHER_NO_RANGE if MMU !! 20 select VIRT_TO_BUS
>> 21 select ARCH_HAVE_NMI_SAFE_CMPXCHG if RMW_INSNS
>> 22 select GENERIC_CPU_DEVICES
>> 23 select GENERIC_IOMAP
>> 24 select GENERIC_STRNCPY_FROM_USER if MMU
>> 25 select GENERIC_STRNLEN_USER if MMU
>> 26 select ARCH_WANT_IPC_PARSE_VERSION
>> 27 select HAVE_FUTEX_CMPXCHG if MMU && FUTEX
>> 28 select HAVE_MOD_ARCH_SPECIFIC
35 select MODULES_USE_ELF_REL 29 select MODULES_USE_ELF_REL
36 select MODULES_USE_ELF_RELA 30 select MODULES_USE_ELF_RELA
37 select NO_DMA if !MMU && !COLDFIRE <<
38 select OLD_SIGACTION <<
39 select OLD_SIGSUSPEND3 31 select OLD_SIGSUSPEND3
40 select UACCESS_MEMCPY if !MMU !! 32 select OLD_SIGACTION
41 select ZONE_DMA !! 33 select MMU_GATHER_NO_RANGE if MMU
42 34
43 config CPU_BIG_ENDIAN 35 config CPU_BIG_ENDIAN
44 def_bool y 36 def_bool y
45 37
46 config ARCH_HAS_ILOG2_U32 38 config ARCH_HAS_ILOG2_U32
47 bool 39 bool
48 40
49 config ARCH_HAS_ILOG2_U64 41 config ARCH_HAS_ILOG2_U64
50 bool 42 bool
51 43
52 config GENERIC_HWEIGHT 44 config GENERIC_HWEIGHT
53 bool 45 bool
54 default y 46 default y
55 47
56 config GENERIC_CALIBRATE_DELAY 48 config GENERIC_CALIBRATE_DELAY
57 bool 49 bool
58 default y 50 default y
59 51
60 config GENERIC_CSUM 52 config GENERIC_CSUM
61 bool 53 bool
62 54
63 config TIME_LOW_RES 55 config TIME_LOW_RES
64 bool 56 bool
65 default y 57 default y
66 58
67 config NO_IOPORT_MAP 59 config NO_IOPORT_MAP
68 def_bool y 60 def_bool y
69 61
>> 62 config NO_DMA
>> 63 def_bool (MMU && SUN3) || (!MMU && !COLDFIRE)
>> 64
>> 65 config ZONE_DMA
>> 66 bool
>> 67 default y
>> 68
70 config HZ 69 config HZ
71 int 70 int
72 default 1000 if CLEOPATRA 71 default 1000 if CLEOPATRA
73 default 100 72 default 100
74 73
75 config PGTABLE_LEVELS 74 config PGTABLE_LEVELS
76 default 2 if SUN3 || COLDFIRE 75 default 2 if SUN3 || COLDFIRE
77 default 3 76 default 3
78 77
79 config MMU 78 config MMU
80 bool "MMU-based Paged Memory Managemen 79 bool "MMU-based Paged Memory Management Support"
81 default y 80 default y
82 help 81 help
83 Select if you want MMU-based virtual 82 Select if you want MMU-based virtualised addressing space
84 support by paged memory management. 83 support by paged memory management. If unsure, say 'Y'.
85 84
86 config MMU_MOTOROLA 85 config MMU_MOTOROLA
87 bool 86 bool
88 select HAVE_PAGE_SIZE_4KB <<
89 87
90 config MMU_COLDFIRE 88 config MMU_COLDFIRE
91 select HAVE_PAGE_SIZE_8KB <<
92 bool 89 bool
93 90
94 config MMU_SUN3 91 config MMU_SUN3
95 bool 92 bool
96 select HAVE_PAGE_SIZE_8KB <<
97 depends on MMU && !MMU_MOTOROLA && !MM 93 depends on MMU && !MMU_MOTOROLA && !MMU_COLDFIRE
98 94
99 config ARCH_SUPPORTS_KEXEC !! 95 config KEXEC
100 def_bool M68KCLASSIC && MMU !! 96 bool "kexec system call"
>> 97 depends on M68KCLASSIC
>> 98 select KEXEC_CORE
>> 99 help
>> 100 kexec is a system call that implements the ability to shutdown your
>> 101 current kernel, and to start another kernel. It is like a reboot
>> 102 but it is independent of the system firmware. And like a reboot
>> 103 you can start any kernel with it, not just Linux.
>> 104
>> 105 The name comes from the similarity to the exec system call.
>> 106
>> 107 It is an ongoing process to be certain the hardware in a machine
>> 108 is properly shutdown, so do not be surprised if this code does not
>> 109 initially work for you. As of this writing the exact hardware
>> 110 interface is strongly in flux, so no good recommendation can be
>> 111 made.
101 112
102 config BOOTINFO_PROC 113 config BOOTINFO_PROC
103 bool "Export bootinfo in procfs" 114 bool "Export bootinfo in procfs"
104 depends on KEXEC && M68KCLASSIC 115 depends on KEXEC && M68KCLASSIC
105 help 116 help
106 Say Y to export the bootinfo used to 117 Say Y to export the bootinfo used to boot the kernel in a
107 "bootinfo" file in procfs. This is 118 "bootinfo" file in procfs. This is useful with kexec.
108 119
109 menu "Platform setup" 120 menu "Platform setup"
110 121
111 source "arch/m68k/Kconfig.cpu" 122 source "arch/m68k/Kconfig.cpu"
112 123
113 source "arch/m68k/Kconfig.machine" 124 source "arch/m68k/Kconfig.machine"
114 125
115 source "arch/m68k/Kconfig.bus" 126 source "arch/m68k/Kconfig.bus"
116 127
117 endmenu 128 endmenu
118 129
119 menu "Kernel Features" 130 menu "Kernel Features"
120 131
121 endmenu 132 endmenu
122 133
123 if !MMU 134 if !MMU
124 menu "Power management options" 135 menu "Power management options"
125 136
126 config PM 137 config PM
127 bool "Power Management support" 138 bool "Power Management support"
128 help 139 help
129 Support processor power management m 140 Support processor power management modes
130 141
131 endmenu 142 endmenu
132 endif 143 endif
133 144
134 source "arch/m68k/Kconfig.devices" 145 source "arch/m68k/Kconfig.devices"
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