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_CPU_FINALIZE_INIT if MMU
7 select ARCH_HAS_SYNC_DMA_FOR_CPU !! 8 select ARCH_HAS_CURRENT_STACK_POINTER
8 select ARCH_HAS_SYNC_DMA_FOR_DEVICE !! 9 select ARCH_HAS_DMA_PREP_COHERENT if HAS_DMA && MMU && !COLDFIRE
9 select ARCH_HAS_DMA_SET_UNCACHED !! 10 select ARCH_HAS_SYNC_DMA_FOR_DEVICE if HAS_DMA
10 select ARCH_NO_SWAP !! 11 select ARCH_HAVE_NMI_SAFE_CMPXCHG if RMW_INSNS
11 select COMMON_CLK !! 12 select ARCH_MIGHT_HAVE_PC_PARPORT if ISA
12 select TIMER_OF !! 13 select ARCH_NO_PREEMPT if !COLDFIRE
>> 14 select ARCH_USE_MEMTEST if MMU_MOTOROLA
>> 15 select ARCH_WANT_IPC_PARSE_VERSION
>> 16 select BINFMT_FLAT_ARGVP_ENVP_ON_STACK
>> 17 select DMA_DIRECT_REMAP if HAS_DMA && MMU && !COLDFIRE
13 select GENERIC_ATOMIC64 18 select GENERIC_ATOMIC64
14 select GENERIC_CPU_DEVICES 19 select GENERIC_CPU_DEVICES
15 select GENERIC_IRQ_PROBE !! 20 select GENERIC_IOMAP
16 select GENERIC_IRQ_SHOW 21 select GENERIC_IRQ_SHOW
17 select HAVE_ARCH_TRACEHOOK !! 22 select HAS_IOPORT if PCI || ISA || ATARI_ROM_ISA
18 select HAVE_ARCH_KGDB !! 23 select HAVE_ARCH_SECCOMP
19 select HAVE_PAGE_SIZE_4KB !! 24 select HAVE_ARCH_SECCOMP_FILTER
20 select IRQ_DOMAIN !! 25 select HAVE_ASM_MODVERSIONS
21 select LOCK_MM_AND_FIND_VMA !! 26 select HAVE_DEBUG_BUGVERBOSE
22 select MODULES_USE_ELF_RELA !! 27 select HAVE_EFFICIENT_UNALIGNED_ACCESS if !CPU_HAS_NO_UNALIGNED
23 select OF !! 28 select HAVE_MOD_ARCH_SPECIFIC
24 select OF_EARLY_FLATTREE !! 29 select HAVE_UID16
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 30 select MMU_GATHER_NO_RANGE if MMU
>> 31 select MODULES_USE_ELF_REL
>> 32 select MODULES_USE_ELF_RELA
>> 33 select NO_DMA if !MMU && !COLDFIRE
>> 34 select OLD_SIGACTION
>> 35 select OLD_SIGSUSPEND3
>> 36 select UACCESS_MEMCPY if !MMU
>> 37 select ZONE_DMA
30 38
31 config GENERIC_CSUM !! 39 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 40 def_bool y
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
47 !! 46 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 47
61 Don't change if unsure. !! 48 config GENERIC_HWEIGHT
>> 49 bool
>> 50 default y
62 51
63 endmenu !! 52 config GENERIC_CALIBRATE_DELAY
>> 53 bool
>> 54 default y
64 55
65 source "arch/nios2/platform/Kconfig.platform" !! 56 config GENERIC_CSUM
>> 57 bool
66 58
67 menu "Processor type and features" !! 59 config TIME_LOW_RES
>> 60 bool
>> 61 default y
68 62
69 config MMU !! 63 config NO_IOPORT_MAP
70 def_bool y 64 def_bool y
71 65
72 config NR_CPUS !! 66 config HZ
73 int 67 int
74 default "1" !! 68 default 1000 if CLEOPATRA
>> 69 default 100
>> 70
>> 71 config PGTABLE_LEVELS
>> 72 default 2 if SUN3 || COLDFIRE
>> 73 default 3
75 74
76 config NIOS2_ALIGNMENT_TRAP !! 75 config MMU
77 bool "Catch alignment trap" !! 76 bool "MMU-based Paged Memory Management Support"
78 default y 77 default y
79 help 78 help
80 Nios II CPUs cannot fetch/store data !! 79 Select if you want MMU-based virtualised addressing space
81 i.e., a 2 or 4 byte fetch must start !! 80 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 81
86 comment "Boot options" !! 82 config MMU_MOTOROLA
>> 83 bool
87 84
88 config CMDLINE_BOOL !! 85 config MMU_COLDFIRE
89 bool "Default bootloader kernel argume !! 86 bool
90 default y <<
91 87
92 config CMDLINE !! 88 config MMU_SUN3
93 string "Default kernel command string" !! 89 bool
94 default "" !! 90 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 91
110 config NIOS2_CMDLINE_IGNORE_DTB !! 92 config KEXEC
111 bool "Ignore kernel command string fro !! 93 bool "kexec system call"
112 depends on CMDLINE_BOOL !! 94 depends on M68KCLASSIC && MMU
113 depends on !CMDLINE_FORCE !! 95 select KEXEC_CORE
114 default y <<
115 help 96 help
116 Set this to ignore the bootargs prop !! 97 kexec is a system call that implements the ability to shutdown your
117 chosen node and fall back to CMDLINE !! 98 current kernel, and to start another kernel. It is like a reboot
>> 99 but it is independent of the system firmware. And like a reboot
>> 100 you can start any kernel with it, not just Linux.
118 101
119 config NIOS2_PASS_CMDLINE !! 102 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. <<
133 103
134 endmenu !! 104 It is an ongoing process to be certain the hardware in a machine
>> 105 is properly shutdown, so do not be surprised if this code does not
>> 106 initially work for you. As of this writing the exact hardware
>> 107 interface is strongly in flux, so no good recommendation can be
>> 108 made.
135 109
136 menu "Advanced setup" !! 110 config BOOTINFO_PROC
>> 111 bool "Export bootinfo in procfs"
>> 112 depends on KEXEC && M68KCLASSIC
>> 113 help
>> 114 Say Y to export the bootinfo used to boot the kernel in a
>> 115 "bootinfo" file in procfs. This is useful with kexec.
137 116
138 config ADVANCED_OPTIONS !! 117 menu "Platform setup"
139 bool "Prompt for advanced kernel confi <<
140 118
141 comment "Default settings for advanced configu !! 119 source "arch/m68k/Kconfig.cpu"
142 depends on !ADVANCED_OPTIONS <<
143 120
144 config NIOS2_KERNEL_MMU_REGION_BASE_BOOL !! 121 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 <<
149 122
150 Say N here unless you know what you !! 123 source "arch/m68k/Kconfig.bus"
151 124
152 config NIOS2_KERNEL_MMU_REGION_BASE !! 125 endmenu
153 hex "Virtual base address of the kerne <<
154 default "0x80000000" <<
155 help <<
156 This option allows you to set the vi <<
157 126
158 config NIOS2_KERNEL_REGION_BASE_BOOL !! 127 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 <<
163 128
164 Say N here unless you know what you !! 129 endmenu
165 130
166 config NIOS2_KERNEL_REGION_BASE !! 131 if !MMU
167 hex "Virtual base address of the kerne !! 132 menu "Power management options"
168 default "0xc0000000" <<
169 133
170 config NIOS2_IO_REGION_BASE_BOOL !! 134 config PM
171 bool "Set custom I/O region base addre !! 135 bool "Power Management support"
172 depends on ADVANCED_OPTIONS <<
173 help 136 help
174 This option allows you to set the vi !! 137 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" <<
181 138
182 endmenu 139 endmenu
>> 140 endif
>> 141
>> 142 source "arch/m68k/Kconfig.devices"
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