xref: /openbmc/linux/arch/m68k/Kconfig (revision 1d7a0395)
1# SPDX-License-Identifier: GPL-2.0
2config M68K
3	bool
4	default y
5	select ARCH_32BIT_OFF_T
6	select ARCH_HAS_BINFMT_FLAT
7	select ARCH_HAS_DMA_PREP_COHERENT if HAS_DMA && MMU && !COLDFIRE
8	select ARCH_HAS_SYNC_DMA_FOR_DEVICE if HAS_DMA
9	select ARCH_HAVE_NMI_SAFE_CMPXCHG if RMW_INSNS
10	select ARCH_MIGHT_HAVE_PC_PARPORT if ISA
11	select ARCH_NO_PREEMPT if !COLDFIRE
12	select ARCH_WANT_IPC_PARSE_VERSION
13	select BINFMT_FLAT_ARGVP_ENVP_ON_STACK
14	select DMA_DIRECT_REMAP if HAS_DMA && MMU && !COLDFIRE
15	select GENERIC_ATOMIC64
16	select GENERIC_CPU_DEVICES
17	select GENERIC_IOMAP
18	select GENERIC_IRQ_SHOW
19	select GENERIC_STRNCPY_FROM_USER if MMU
20	select GENERIC_STRNLEN_USER if MMU
21	select HAVE_AOUT if MMU
22	select HAVE_ASM_MODVERSIONS
23	select HAVE_DEBUG_BUGVERBOSE
24	select HAVE_EFFICIENT_UNALIGNED_ACCESS if !CPU_HAS_NO_UNALIGNED
25	select HAVE_FUTEX_CMPXCHG if MMU && FUTEX
26	select HAVE_IDE
27	select HAVE_MOD_ARCH_SPECIFIC
28	select HAVE_UID16
29	select MMU_GATHER_NO_RANGE if MMU
30	select MODULES_USE_ELF_REL
31	select MODULES_USE_ELF_RELA
32	select NO_DMA if !MMU && !COLDFIRE
33	select OLD_SIGACTION
34	select OLD_SIGSUSPEND3
35	select SET_FS
36	select UACCESS_MEMCPY if !MMU
37	select VIRT_TO_BUS
38	select ZONE_DMA
39
40config CPU_BIG_ENDIAN
41	def_bool y
42
43config ARCH_HAS_ILOG2_U32
44	bool
45
46config ARCH_HAS_ILOG2_U64
47	bool
48
49config GENERIC_HWEIGHT
50	bool
51	default y
52
53config GENERIC_CALIBRATE_DELAY
54	bool
55	default y
56
57config GENERIC_CSUM
58	bool
59
60config TIME_LOW_RES
61	bool
62	default y
63
64config NO_IOPORT_MAP
65	def_bool y
66
67config HZ
68	int
69	default 1000 if CLEOPATRA
70	default 100
71
72config PGTABLE_LEVELS
73	default 2 if SUN3 || COLDFIRE
74	default 3
75
76config MMU
77	bool "MMU-based Paged Memory Management Support"
78	default y
79	help
80	  Select if you want MMU-based virtualised addressing space
81	  support by paged memory management. If unsure, say 'Y'.
82
83config MMU_MOTOROLA
84	bool
85
86config MMU_COLDFIRE
87	bool
88
89config MMU_SUN3
90	bool
91	depends on MMU && !MMU_MOTOROLA && !MMU_COLDFIRE
92
93config KEXEC
94	bool "kexec system call"
95	depends on M68KCLASSIC
96	select KEXEC_CORE
97	help
98	  kexec is a system call that implements the ability to shutdown your
99	  current kernel, and to start another kernel.  It is like a reboot
100	  but it is independent of the system firmware.   And like a reboot
101	  you can start any kernel with it, not just Linux.
102
103	  The name comes from the similarity to the exec system call.
104
105	  It is an ongoing process to be certain the hardware in a machine
106	  is properly shutdown, so do not be surprised if this code does not
107	  initially work for you.  As of this writing the exact hardware
108	  interface is strongly in flux, so no good recommendation can be
109	  made.
110
111config BOOTINFO_PROC
112	bool "Export bootinfo in procfs"
113	depends on KEXEC && M68KCLASSIC
114	help
115	  Say Y to export the bootinfo used to boot the kernel in a
116	  "bootinfo" file in procfs.  This is useful with kexec.
117
118menu "Platform setup"
119
120source "arch/m68k/Kconfig.cpu"
121
122source "arch/m68k/Kconfig.machine"
123
124source "arch/m68k/Kconfig.bus"
125
126endmenu
127
128menu "Kernel Features"
129
130endmenu
131
132if !MMU
133menu "Power management options"
134
135config PM
136	bool "Power Management support"
137	help
138	  Support processor power management modes
139
140endmenu
141endif
142
143source "arch/m68k/Kconfig.devices"
144