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