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