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 <<
8 select ARCH_HAS_CPU_FINALIZE_INIT if M 7 select ARCH_HAS_CPU_FINALIZE_INIT if MMU
9 select ARCH_HAS_CURRENT_STACK_POINTER 8 select ARCH_HAS_CURRENT_STACK_POINTER
10 select ARCH_HAS_DMA_PREP_COHERENT if M !! 9 select ARCH_HAS_DMA_PREP_COHERENT if HAS_DMA && MMU && !COLDFIRE
11 select ARCH_HAS_SYNC_DMA_FOR_DEVICE if !! 10 select ARCH_HAS_SYNC_DMA_FOR_DEVICE if HAS_DMA
12 select ARCH_HAVE_NMI_SAFE_CMPXCHG if R 11 select ARCH_HAVE_NMI_SAFE_CMPXCHG if RMW_INSNS
13 select ARCH_MIGHT_HAVE_PC_PARPORT if I 12 select ARCH_MIGHT_HAVE_PC_PARPORT if ISA
14 select ARCH_NO_PREEMPT if !COLDFIRE 13 select ARCH_NO_PREEMPT if !COLDFIRE
15 select ARCH_USE_MEMTEST if MMU_MOTOROL 14 select ARCH_USE_MEMTEST if MMU_MOTOROLA
16 select ARCH_WANT_IPC_PARSE_VERSION 15 select ARCH_WANT_IPC_PARSE_VERSION
17 select BINFMT_FLAT_ARGVP_ENVP_ON_STACK 16 select BINFMT_FLAT_ARGVP_ENVP_ON_STACK
18 select DMA_DIRECT_REMAP if M68K_NONCOH !! 17 select DMA_DIRECT_REMAP if HAS_DMA && MMU && !COLDFIRE
19 select GENERIC_ATOMIC64 18 select GENERIC_ATOMIC64
20 select GENERIC_CPU_DEVICES 19 select GENERIC_CPU_DEVICES
21 select GENERIC_IOMAP if HAS_IOPORT !! 20 select GENERIC_IOMAP
22 select GENERIC_IRQ_SHOW 21 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 22 select HAS_IOPORT if PCI || ISA || ATARI_ROM_ISA
27 select HAVE_ARCH_SECCOMP 23 select HAVE_ARCH_SECCOMP
28 select HAVE_ARCH_SECCOMP_FILTER 24 select HAVE_ARCH_SECCOMP_FILTER
29 select HAVE_ASM_MODVERSIONS 25 select HAVE_ASM_MODVERSIONS
30 select HAVE_DEBUG_BUGVERBOSE 26 select HAVE_DEBUG_BUGVERBOSE
31 select HAVE_EFFICIENT_UNALIGNED_ACCESS 27 select HAVE_EFFICIENT_UNALIGNED_ACCESS if !CPU_HAS_NO_UNALIGNED
32 select HAVE_MOD_ARCH_SPECIFIC 28 select HAVE_MOD_ARCH_SPECIFIC
33 select HAVE_UID16 29 select HAVE_UID16
34 select MMU_GATHER_NO_RANGE if MMU 30 select MMU_GATHER_NO_RANGE if MMU
35 select MODULES_USE_ELF_REL 31 select MODULES_USE_ELF_REL
36 select MODULES_USE_ELF_RELA 32 select MODULES_USE_ELF_RELA
37 select NO_DMA if !MMU && !COLDFIRE 33 select NO_DMA if !MMU && !COLDFIRE
38 select OLD_SIGACTION 34 select OLD_SIGACTION
39 select OLD_SIGSUSPEND3 35 select OLD_SIGSUSPEND3
40 select UACCESS_MEMCPY if !MMU 36 select UACCESS_MEMCPY if !MMU
41 select ZONE_DMA 37 select ZONE_DMA
42 38
43 config CPU_BIG_ENDIAN 39 config CPU_BIG_ENDIAN
44 def_bool y 40 def_bool y
45 41
46 config ARCH_HAS_ILOG2_U32 42 config ARCH_HAS_ILOG2_U32
47 bool 43 bool
48 44
49 config ARCH_HAS_ILOG2_U64 45 config ARCH_HAS_ILOG2_U64
50 bool 46 bool
51 47
52 config GENERIC_HWEIGHT 48 config GENERIC_HWEIGHT
53 bool 49 bool
54 default y 50 default y
55 51
56 config GENERIC_CALIBRATE_DELAY 52 config GENERIC_CALIBRATE_DELAY
57 bool 53 bool
58 default y 54 default y
59 55
60 config GENERIC_CSUM 56 config GENERIC_CSUM
61 bool 57 bool
62 58
63 config TIME_LOW_RES 59 config TIME_LOW_RES
64 bool 60 bool
65 default y 61 default y
66 62
67 config NO_IOPORT_MAP 63 config NO_IOPORT_MAP
68 def_bool y 64 def_bool y
69 65
70 config HZ 66 config HZ
71 int 67 int
72 default 1000 if CLEOPATRA 68 default 1000 if CLEOPATRA
73 default 100 69 default 100
74 70
75 config PGTABLE_LEVELS 71 config PGTABLE_LEVELS
76 default 2 if SUN3 || COLDFIRE 72 default 2 if SUN3 || COLDFIRE
77 default 3 73 default 3
78 74
79 config MMU 75 config MMU
80 bool "MMU-based Paged Memory Managemen 76 bool "MMU-based Paged Memory Management Support"
81 default y 77 default y
82 help 78 help
83 Select if you want MMU-based virtual 79 Select if you want MMU-based virtualised addressing space
84 support by paged memory management. 80 support by paged memory management. If unsure, say 'Y'.
85 81
86 config MMU_MOTOROLA 82 config MMU_MOTOROLA
87 bool 83 bool
88 select HAVE_PAGE_SIZE_4KB <<
89 84
90 config MMU_COLDFIRE 85 config MMU_COLDFIRE
91 select HAVE_PAGE_SIZE_8KB <<
92 bool 86 bool
93 87
94 config MMU_SUN3 88 config MMU_SUN3
95 bool 89 bool
96 select HAVE_PAGE_SIZE_8KB <<
97 depends on MMU && !MMU_MOTOROLA && !MM 90 depends on MMU && !MMU_MOTOROLA && !MMU_COLDFIRE
98 91
99 config ARCH_SUPPORTS_KEXEC !! 92 config KEXEC
100 def_bool M68KCLASSIC && MMU !! 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.
101 109
102 config BOOTINFO_PROC 110 config BOOTINFO_PROC
103 bool "Export bootinfo in procfs" 111 bool "Export bootinfo in procfs"
104 depends on KEXEC && M68KCLASSIC 112 depends on KEXEC && M68KCLASSIC
105 help 113 help
106 Say Y to export the bootinfo used to 114 Say Y to export the bootinfo used to boot the kernel in a
107 "bootinfo" file in procfs. This is 115 "bootinfo" file in procfs. This is useful with kexec.
108 116
109 menu "Platform setup" 117 menu "Platform setup"
110 118
111 source "arch/m68k/Kconfig.cpu" 119 source "arch/m68k/Kconfig.cpu"
112 120
113 source "arch/m68k/Kconfig.machine" 121 source "arch/m68k/Kconfig.machine"
114 122
115 source "arch/m68k/Kconfig.bus" 123 source "arch/m68k/Kconfig.bus"
116 124
117 endmenu 125 endmenu
118 126
119 menu "Kernel Features" 127 menu "Kernel Features"
120 128
121 endmenu 129 endmenu
122 130
123 if !MMU 131 if !MMU
124 menu "Power management options" 132 menu "Power management options"
125 133
126 config PM 134 config PM
127 bool "Power Management support" 135 bool "Power Management support"
128 help 136 help
129 Support processor power management m 137 Support processor power management modes
130 138
131 endmenu 139 endmenu
132 endif 140 endif
133 141
134 source "arch/m68k/Kconfig.devices" 142 source "arch/m68k/Kconfig.devices"
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