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_HAVE_NMI_SAFE_CMPXCHG if RMW_INSNS
9 select ARCH_HAS_DMA_SET_UNCACHED !! 10 select ARCH_MIGHT_HAVE_PC_PARPORT if ISA
10 select ARCH_NO_SWAP !! 11 select ARCH_NO_PREEMPT if !COLDFIRE
11 select COMMON_CLK !! 12 select ARCH_WANT_IPC_PARSE_VERSION
12 select TIMER_OF !! 13 select BINFMT_FLAT_ARGVP_ENVP_ON_STACK
>> 14 select DMA_DIRECT_REMAP if HAS_DMA && MMU && !COLDFIRE
13 select GENERIC_ATOMIC64 15 select GENERIC_ATOMIC64
14 select GENERIC_CPU_DEVICES 16 select GENERIC_CPU_DEVICES
15 select GENERIC_IRQ_PROBE !! 17 select GENERIC_IOMAP
16 select GENERIC_IRQ_SHOW 18 select GENERIC_IRQ_SHOW
17 select HAVE_ARCH_TRACEHOOK !! 19 select HAVE_AOUT if MMU
18 select HAVE_ARCH_KGDB !! 20 select HAVE_ASM_MODVERSIONS
19 select HAVE_PAGE_SIZE_4KB !! 21 select HAVE_DEBUG_BUGVERBOSE
20 select IRQ_DOMAIN !! 22 select HAVE_EFFICIENT_UNALIGNED_ACCESS if !CPU_HAS_NO_UNALIGNED
21 select LOCK_MM_AND_FIND_VMA !! 23 select HAVE_FUTEX_CMPXCHG if MMU && FUTEX
22 select MODULES_USE_ELF_RELA !! 24 select HAVE_MOD_ARCH_SPECIFIC
23 select OF !! 25 select HAVE_UID16
24 select OF_EARLY_FLATTREE <<
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 26 select MMU_GATHER_NO_RANGE if MMU
>> 27 select MODULES_USE_ELF_REL
>> 28 select MODULES_USE_ELF_RELA
>> 29 select NO_DMA if !MMU && !COLDFIRE
>> 30 select OLD_SIGACTION
>> 31 select OLD_SIGSUSPEND3
>> 32 select UACCESS_MEMCPY if !MMU
>> 33 select VIRT_TO_BUS
>> 34 select ZONE_DMA
30 35
31 config GENERIC_CSUM !! 36 config CPU_BIG_ENDIAN
32 def_bool y <<
33 <<
34 config GENERIC_HWEIGHT <<
35 def_bool y <<
36 <<
37 config GENERIC_CALIBRATE_DELAY <<
38 def_bool y <<
39 <<
40 config NO_IOPORT_MAP <<
41 def_bool y 37 def_bool y
42 38
43 config FPU !! 39 config ARCH_HAS_ILOG2_U32
44 def_bool n !! 40 bool
45 41
46 menu "Kernel features" !! 42 config ARCH_HAS_ILOG2_U64
47 !! 43 bool
48 source "kernel/Kconfig.hz" <<
49 <<
50 config ARCH_FORCE_MAX_ORDER <<
51 int "Order of maximal physically conti <<
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 44
61 Don't change if unsure. !! 45 config GENERIC_HWEIGHT
>> 46 bool
>> 47 default y
62 48
63 endmenu !! 49 config GENERIC_CALIBRATE_DELAY
>> 50 bool
>> 51 default y
64 52
65 source "arch/nios2/platform/Kconfig.platform" !! 53 config GENERIC_CSUM
>> 54 bool
66 55
67 menu "Processor type and features" !! 56 config TIME_LOW_RES
>> 57 bool
>> 58 default y
68 59
69 config MMU !! 60 config NO_IOPORT_MAP
70 def_bool y 61 def_bool y
71 62
72 config NR_CPUS !! 63 config HZ
73 int 64 int
74 default "1" !! 65 default 1000 if CLEOPATRA
>> 66 default 100
>> 67
>> 68 config PGTABLE_LEVELS
>> 69 default 2 if SUN3 || COLDFIRE
>> 70 default 3
75 71
76 config NIOS2_ALIGNMENT_TRAP !! 72 config MMU
77 bool "Catch alignment trap" !! 73 bool "MMU-based Paged Memory Management Support"
78 default y 74 default y
79 help 75 help
80 Nios II CPUs cannot fetch/store data !! 76 Select if you want MMU-based virtualised addressing space
81 i.e., a 2 or 4 byte fetch must start !! 77 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 78
86 comment "Boot options" !! 79 config MMU_MOTOROLA
>> 80 bool
87 81
88 config CMDLINE_BOOL !! 82 config MMU_COLDFIRE
89 bool "Default bootloader kernel argume !! 83 bool
90 default y <<
91 84
92 config CMDLINE !! 85 config MMU_SUN3
93 string "Default kernel command string" !! 86 bool
94 default "" !! 87 depends on MMU && !MMU_MOTOROLA && !MMU_COLDFIRE
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 88
110 config NIOS2_CMDLINE_IGNORE_DTB !! 89 config KEXEC
111 bool "Ignore kernel command string fro !! 90 bool "kexec system call"
112 depends on CMDLINE_BOOL !! 91 depends on M68KCLASSIC
113 depends on !CMDLINE_FORCE !! 92 select KEXEC_CORE
114 default y <<
115 help 93 help
116 Set this to ignore the bootargs prop !! 94 kexec is a system call that implements the ability to shutdown your
117 chosen node and fall back to CMDLINE !! 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.
118 98
119 config NIOS2_PASS_CMDLINE !! 99 The name comes from the similarity to the exec system call.
120 bool "Passed kernel command line from <<
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. <<
133 100
134 endmenu !! 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.
135 106
136 menu "Advanced setup" !! 107 config BOOTINFO_PROC
>> 108 bool "Export bootinfo in procfs"
>> 109 depends on KEXEC && M68KCLASSIC
>> 110 help
>> 111 Say Y to export the bootinfo used to boot the kernel in a
>> 112 "bootinfo" file in procfs. This is useful with kexec.
137 113
138 config ADVANCED_OPTIONS !! 114 menu "Platform setup"
139 bool "Prompt for advanced kernel confi <<
140 115
141 comment "Default settings for advanced configu !! 116 source "arch/m68k/Kconfig.cpu"
142 depends on !ADVANCED_OPTIONS <<
143 117
144 config NIOS2_KERNEL_MMU_REGION_BASE_BOOL !! 118 source "arch/m68k/Kconfig.machine"
145 bool "Set custom kernel MMU region bas <<
146 depends on ADVANCED_OPTIONS <<
147 help <<
148 This option allows you to set the vi <<
149 119
150 Say N here unless you know what you !! 120 source "arch/m68k/Kconfig.bus"
151 121
152 config NIOS2_KERNEL_MMU_REGION_BASE !! 122 endmenu
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 menu "Kernel Features"
159 bool "Set custom kernel region base ad <<
160 depends on ADVANCED_OPTIONS <<
161 help <<
162 This option allows you to set the vi <<
163 125
164 Say N here unless you know what you !! 126 endmenu
165 127
166 config NIOS2_KERNEL_REGION_BASE !! 128 if !MMU
167 hex "Virtual base address of the kerne !! 129 menu "Power management options"
168 default "0xc0000000" <<
169 130
170 config NIOS2_IO_REGION_BASE_BOOL !! 131 config PM
171 bool "Set custom I/O region base addre !! 132 bool "Power Management support"
172 depends on ADVANCED_OPTIONS <<
173 help 133 help
174 This option allows you to set the vi !! 134 Support processor power management modes
175 <<
176 Say N here unless you know what you <<
177 <<
178 config NIOS2_IO_REGION_BASE <<
179 hex "Virtual base address of the I/O r <<
180 default "0xe0000000" <<
181 135
182 endmenu 136 endmenu
>> 137 endif
>> 138
>> 139 source "arch/m68k/Kconfig.devices"
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