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_DMA_PREP_COHERENT if HAS_DMA && MMU && !COLDFIRE
8 select ARCH_HAS_SYNC_DMA_FOR_DEVICE !! 9 select ARCH_HAS_SYNC_DMA_FOR_DEVICE if HAS_DMA
9 select ARCH_HAS_DMA_SET_UNCACHED !! 10 select ARCH_HAVE_NMI_SAFE_CMPXCHG if RMW_INSNS
10 select ARCH_NO_SWAP !! 11 select ARCH_MIGHT_HAVE_PC_PARPORT if ISA
11 select COMMON_CLK !! 12 select ARCH_NO_PREEMPT if !COLDFIRE
12 select TIMER_OF !! 13 select ARCH_WANT_IPC_PARSE_VERSION
>> 14 select BINFMT_FLAT_ARGVP_ENVP_ON_STACK
>> 15 select DMA_DIRECT_REMAP if HAS_DMA && MMU && !COLDFIRE
13 select GENERIC_ATOMIC64 16 select GENERIC_ATOMIC64
14 select GENERIC_CPU_DEVICES 17 select GENERIC_CPU_DEVICES
15 select GENERIC_IRQ_PROBE !! 18 select GENERIC_IOMAP
16 select GENERIC_IRQ_SHOW 19 select GENERIC_IRQ_SHOW
17 select HAVE_ARCH_TRACEHOOK !! 20 select GENERIC_STRNCPY_FROM_USER if MMU
18 select HAVE_ARCH_KGDB !! 21 select GENERIC_STRNLEN_USER if MMU
19 select HAVE_PAGE_SIZE_4KB !! 22 select HAVE_AOUT if MMU
20 select IRQ_DOMAIN !! 23 select HAVE_ASM_MODVERSIONS
21 select LOCK_MM_AND_FIND_VMA !! 24 select HAVE_DEBUG_BUGVERBOSE
22 select MODULES_USE_ELF_RELA !! 25 select HAVE_FUTEX_CMPXCHG if MMU && FUTEX
23 select OF !! 26 select HAVE_IDE
24 select OF_EARLY_FLATTREE !! 27 select HAVE_MOD_ARCH_SPECIFIC
25 select SOC_BUS !! 28 select HAVE_UID16
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 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
30 38
31 config GENERIC_CSUM !! 39 config CPU_BIG_ENDIAN
32 def_bool y <<
33 <<
34 config GENERIC_HWEIGHT <<
35 def_bool y 40 def_bool y
36 41
37 config GENERIC_CALIBRATE_DELAY !! 42 config ARCH_HAS_ILOG2_U32
38 def_bool y !! 43 bool
39 44
40 config NO_IOPORT_MAP !! 45 config ARCH_HAS_ILOG2_U64
41 def_bool y !! 46 bool
42 47
43 config FPU !! 48 config GENERIC_HWEIGHT
44 def_bool n !! 49 bool
>> 50 default y
45 51
46 menu "Kernel features" !! 52 config GENERIC_CALIBRATE_DELAY
>> 53 bool
>> 54 default y
47 55
48 source "kernel/Kconfig.hz" !! 56 config GENERIC_CSUM
>> 57 bool
49 58
50 config ARCH_FORCE_MAX_ORDER !! 59 config TIME_LOW_RES
51 int "Order of maximal physically conti !! 60 bool
52 default "10" !! 61 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 62
61 Don't change if unsure. !! 63 config NO_IOPORT_MAP
>> 64 def_bool y
62 65
63 endmenu !! 66 config ZONE_DMA
>> 67 bool
>> 68 default y
64 69
65 source "arch/nios2/platform/Kconfig.platform" !! 70 config HZ
>> 71 int
>> 72 default 1000 if CLEOPATRA
>> 73 default 100
66 74
67 menu "Processor type and features" !! 75 config PGTABLE_LEVELS
>> 76 default 2 if SUN3 || COLDFIRE
>> 77 default 3
68 78
69 config MMU 79 config MMU
70 def_bool y !! 80 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 81 default y
79 help 82 help
80 Nios II CPUs cannot fetch/store data !! 83 Select if you want MMU-based virtualised addressing space
81 i.e., a 2 or 4 byte fetch must start !! 84 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 85
110 config NIOS2_CMDLINE_IGNORE_DTB !! 86 config MMU_MOTOROLA
111 bool "Ignore kernel command string fro !! 87 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 88
119 config NIOS2_PASS_CMDLINE !! 89 config MMU_COLDFIRE
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_SUN3
>> 93 bool
>> 94 depends on MMU && !MMU_MOTOROLA && !MMU_COLDFIRE
135 95
136 menu "Advanced setup" !! 96 config KEXEC
>> 97 bool "kexec system call"
>> 98 depends on M68KCLASSIC
>> 99 select KEXEC_CORE
>> 100 help
>> 101 kexec is a system call that implements the ability to shutdown your
>> 102 current kernel, and to start another kernel. It is like a reboot
>> 103 but it is independent of the system firmware. And like a reboot
>> 104 you can start any kernel with it, not just Linux.
137 105
138 config ADVANCED_OPTIONS !! 106 The name comes from the similarity to the exec system call.
139 bool "Prompt for advanced kernel confi <<
140 107
141 comment "Default settings for advanced configu !! 108 It is an ongoing process to be certain the hardware in a machine
142 depends on !ADVANCED_OPTIONS !! 109 is properly shutdown, so do not be surprised if this code does not
>> 110 initially work for you. As of this writing the exact hardware
>> 111 interface is strongly in flux, so no good recommendation can be
>> 112 made.
143 113
144 config NIOS2_KERNEL_MMU_REGION_BASE_BOOL !! 114 config BOOTINFO_PROC
145 bool "Set custom kernel MMU region bas !! 115 bool "Export bootinfo in procfs"
146 depends on ADVANCED_OPTIONS !! 116 depends on KEXEC && M68KCLASSIC
147 help 117 help
148 This option allows you to set the vi !! 118 Say Y to export the bootinfo used to boot the kernel in a
>> 119 "bootinfo" file in procfs. This is useful with kexec.
149 120
150 Say N here unless you know what you !! 121 menu "Platform setup"
151 122
152 config NIOS2_KERNEL_MMU_REGION_BASE !! 123 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 <<
157 124
158 config NIOS2_KERNEL_REGION_BASE_BOOL !! 125 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 <<
163 126
164 Say N here unless you know what you !! 127 source "arch/m68k/Kconfig.bus"
165 128
166 config NIOS2_KERNEL_REGION_BASE !! 129 endmenu
167 hex "Virtual base address of the kerne <<
168 default "0xc0000000" <<
169 130
170 config NIOS2_IO_REGION_BASE_BOOL !! 131 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 <<
175 132
176 Say N here unless you know what you !! 133 endmenu
177 134
178 config NIOS2_IO_REGION_BASE !! 135 if !MMU
179 hex "Virtual base address of the I/O r !! 136 menu "Power management options"
180 default "0xe0000000" !! 137
>> 138 config PM
>> 139 bool "Power Management support"
>> 140 help
>> 141 Support processor power management modes
181 142
182 endmenu 143 endmenu
>> 144 endif
>> 145
>> 146 source "arch/m68k/Kconfig.devices"
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