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