1 # SPDX-License-Identifier: GPL-2.0 1 # SPDX-License-Identifier: GPL-2.0
2 config NIOS2 !! 2 config M68K
3 def_bool y !! 3 bool
>> 4 default y
4 select ARCH_32BIT_OFF_T 5 select ARCH_32BIT_OFF_T
5 select ARCH_HAS_CPU_CACHE_ALIASING !! 6 select ARCH_HAS_BINFMT_FLAT
6 select ARCH_HAS_DMA_PREP_COHERENT !! 7 select ARCH_HAS_DMA_PREP_COHERENT if HAS_DMA && MMU && !COLDFIRE
7 select ARCH_HAS_SYNC_DMA_FOR_CPU !! 8 select ARCH_HAS_SYNC_DMA_FOR_DEVICE if HAS_DMA
8 select ARCH_HAS_SYNC_DMA_FOR_DEVICE !! 9 select ARCH_MIGHT_HAVE_PC_PARPORT if ISA
9 select ARCH_HAS_DMA_SET_UNCACHED !! 10 select ARCH_NO_PREEMPT if !COLDFIRE
10 select ARCH_NO_SWAP !! 11 select BINFMT_FLAT_ARGVP_ENVP_ON_STACK
11 select COMMON_CLK !! 12 select DMA_DIRECT_REMAP if HAS_DMA && MMU && !COLDFIRE
12 select TIMER_OF !! 13 select HAVE_IDE
>> 14 select HAVE_AOUT if MMU
>> 15 select HAVE_ASM_MODVERSIONS
>> 16 select HAVE_DEBUG_BUGVERBOSE
>> 17 select GENERIC_IRQ_SHOW
13 select GENERIC_ATOMIC64 18 select GENERIC_ATOMIC64
>> 19 select HAVE_UID16
>> 20 select VIRT_TO_BUS
>> 21 select ARCH_HAVE_NMI_SAFE_CMPXCHG if RMW_INSNS
14 select GENERIC_CPU_DEVICES 22 select GENERIC_CPU_DEVICES
15 select GENERIC_IRQ_PROBE !! 23 select GENERIC_IOMAP
16 select GENERIC_IRQ_SHOW !! 24 select GENERIC_STRNCPY_FROM_USER if MMU
17 select HAVE_ARCH_TRACEHOOK !! 25 select GENERIC_STRNLEN_USER if MMU
18 select HAVE_ARCH_KGDB !! 26 select ARCH_WANT_IPC_PARSE_VERSION
19 select HAVE_PAGE_SIZE_4KB !! 27 select HAVE_FUTEX_CMPXCHG if MMU && FUTEX
20 select IRQ_DOMAIN !! 28 select HAVE_MOD_ARCH_SPECIFIC
21 select LOCK_MM_AND_FIND_VMA !! 29 select MODULES_USE_ELF_REL
22 select MODULES_USE_ELF_RELA 30 select MODULES_USE_ELF_RELA
23 select OF !! 31 select OLD_SIGSUSPEND3
24 select OF_EARLY_FLATTREE !! 32 select OLD_SIGACTION
25 select SOC_BUS <<
26 select SPARSE_IRQ <<
27 select USB_ARCH_HAS_HCD if USB_SUPPORT <<
28 select CPU_NO_EFFICIENT_FFS <<
29 select MMU_GATHER_NO_RANGE if MMU 33 select MMU_GATHER_NO_RANGE if MMU
30 34
31 config GENERIC_CSUM !! 35 config CPU_BIG_ENDIAN
32 def_bool y 36 def_bool y
33 37
34 config GENERIC_HWEIGHT !! 38 config ARCH_HAS_ILOG2_U32
35 def_bool y !! 39 bool
36 40
37 config GENERIC_CALIBRATE_DELAY !! 41 config ARCH_HAS_ILOG2_U64
38 def_bool y !! 42 bool
39 43
40 config NO_IOPORT_MAP !! 44 config GENERIC_HWEIGHT
41 def_bool y !! 45 bool
>> 46 default y
42 47
43 config FPU !! 48 config GENERIC_CALIBRATE_DELAY
44 def_bool n !! 49 bool
>> 50 default y
45 51
46 menu "Kernel features" !! 52 config GENERIC_CSUM
>> 53 bool
47 54
48 source "kernel/Kconfig.hz" !! 55 config TIME_LOW_RES
>> 56 bool
>> 57 default y
49 58
50 config ARCH_FORCE_MAX_ORDER !! 59 config NO_IOPORT_MAP
51 int "Order of maximal physically conti !! 60 def_bool y
52 default "10" <<
53 help <<
54 The kernel page allocator limits the <<
55 contiguous allocations. The limit is <<
56 defines the maximal power of two of <<
57 allocated as a single contiguous blo <<
58 overriding the default setting when <<
59 large blocks of physically contiguou <<
60 61
61 Don't change if unsure. !! 62 config NO_DMA
>> 63 def_bool (MMU && SUN3) || (!MMU && !COLDFIRE)
62 64
63 endmenu !! 65 config ZONE_DMA
>> 66 bool
>> 67 default y
64 68
65 source "arch/nios2/platform/Kconfig.platform" !! 69 config HZ
>> 70 int
>> 71 default 1000 if CLEOPATRA
>> 72 default 100
66 73
67 menu "Processor type and features" !! 74 config PGTABLE_LEVELS
>> 75 default 2 if SUN3 || COLDFIRE
>> 76 default 3
68 77
69 config MMU 78 config MMU
70 def_bool y !! 79 bool "MMU-based Paged Memory Management Support"
71 <<
72 config NR_CPUS <<
73 int <<
74 default "1" <<
75 <<
76 config NIOS2_ALIGNMENT_TRAP <<
77 bool "Catch alignment trap" <<
78 default y 80 default y
79 help 81 help
80 Nios II CPUs cannot fetch/store data !! 82 Select if you want MMU-based virtualised addressing space
81 i.e., a 2 or 4 byte fetch must start !! 83 support by paged memory management. If unsure, say 'Y'.
82 2 or 4. Any non-aligned load/store i <<
83 emulated in software if you say Y he <<
84 impact. <<
85 <<
86 comment "Boot options" <<
87 <<
88 config CMDLINE_BOOL <<
89 bool "Default bootloader kernel argume <<
90 default y <<
91 <<
92 config CMDLINE <<
93 string "Default kernel command string" <<
94 default "" <<
95 depends on CMDLINE_BOOL <<
96 help <<
97 On some platforms, there is currentl <<
98 pass arguments to the kernel. For th <<
99 some command-line options at build t <<
100 other cases you can specify kernel a <<
101 to set them up in board prom initial <<
102 <<
103 config CMDLINE_FORCE <<
104 bool "Force default kernel command str <<
105 depends on CMDLINE_BOOL <<
106 help <<
107 Set this to have arguments from the <<
108 override those passed by the boot lo <<
109 84
110 config NIOS2_CMDLINE_IGNORE_DTB !! 85 config MMU_MOTOROLA
111 bool "Ignore kernel command string fro !! 86 bool
112 depends on CMDLINE_BOOL <<
113 depends on !CMDLINE_FORCE <<
114 default y <<
115 help <<
116 Set this to ignore the bootargs prop <<
117 chosen node and fall back to CMDLINE <<
118 87
119 config NIOS2_PASS_CMDLINE !! 88 config MMU_COLDFIRE
120 bool "Passed kernel command line from !! 89 bool
121 help <<
122 Use bootargs env variable from u-boo <<
123 will override "Default kernel comman <<
124 Say N if you are unsure. <<
125 <<
126 config NIOS2_BOOT_LINK_OFFSET <<
127 hex "Link address offset for booting" <<
128 default "0x00500000" <<
129 help <<
130 This option allows you to set the li <<
131 This can be useful if you are on a b <<
132 memory. <<
133 90
134 endmenu !! 91 config MMU_SUN3
>> 92 bool
>> 93 depends on MMU && !MMU_MOTOROLA && !MMU_COLDFIRE
135 94
136 menu "Advanced setup" !! 95 config KEXEC
>> 96 bool "kexec system call"
>> 97 depends on M68KCLASSIC
>> 98 select KEXEC_CORE
>> 99 help
>> 100 kexec is a system call that implements the ability to shutdown your
>> 101 current kernel, and to start another kernel. It is like a reboot
>> 102 but it is independent of the system firmware. And like a reboot
>> 103 you can start any kernel with it, not just Linux.
137 104
138 config ADVANCED_OPTIONS !! 105 The name comes from the similarity to the exec system call.
139 bool "Prompt for advanced kernel confi <<
140 106
141 comment "Default settings for advanced configu !! 107 It is an ongoing process to be certain the hardware in a machine
142 depends on !ADVANCED_OPTIONS !! 108 is properly shutdown, so do not be surprised if this code does not
>> 109 initially work for you. As of this writing the exact hardware
>> 110 interface is strongly in flux, so no good recommendation can be
>> 111 made.
143 112
144 config NIOS2_KERNEL_MMU_REGION_BASE_BOOL !! 113 config BOOTINFO_PROC
145 bool "Set custom kernel MMU region bas !! 114 bool "Export bootinfo in procfs"
146 depends on ADVANCED_OPTIONS !! 115 depends on KEXEC && M68KCLASSIC
147 help 116 help
148 This option allows you to set the vi !! 117 Say Y to export the bootinfo used to boot the kernel in a
>> 118 "bootinfo" file in procfs. This is useful with kexec.
149 119
150 Say N here unless you know what you !! 120 menu "Platform setup"
151 121
152 config NIOS2_KERNEL_MMU_REGION_BASE !! 122 source "arch/m68k/Kconfig.cpu"
153 hex "Virtual base address of the kerne <<
154 default "0x80000000" <<
155 help <<
156 This option allows you to set the vi <<
157 123
158 config NIOS2_KERNEL_REGION_BASE_BOOL !! 124 source "arch/m68k/Kconfig.machine"
159 bool "Set custom kernel region base ad !! 125
160 depends on ADVANCED_OPTIONS !! 126 source "arch/m68k/Kconfig.bus"
161 help <<
162 This option allows you to set the vi <<
163 127
164 Say N here unless you know what you !! 128 endmenu
165 129
166 config NIOS2_KERNEL_REGION_BASE !! 130 menu "Kernel Features"
167 hex "Virtual base address of the kerne <<
168 default "0xc0000000" <<
169 131
170 config NIOS2_IO_REGION_BASE_BOOL !! 132 endmenu
171 bool "Set custom I/O region base addre <<
172 depends on ADVANCED_OPTIONS <<
173 help <<
174 This option allows you to set the vi <<
175 133
176 Say N here unless you know what you !! 134 if !MMU
>> 135 menu "Power management options"
177 136
178 config NIOS2_IO_REGION_BASE !! 137 config PM
179 hex "Virtual base address of the I/O r !! 138 bool "Power Management support"
180 default "0xe0000000" !! 139 help
>> 140 Support processor power management modes
181 141
182 endmenu 142 endmenu
>> 143 endif
>> 144
>> 145 source "arch/m68k/Kconfig.devices"
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