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