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2fc8483f LFT |
1 | config NIOS2 |
2 | def_bool y | |
3 | select ARCH_WANT_OPTIONAL_GPIOLIB | |
4 | select CLKSRC_OF | |
5 | select GENERIC_ATOMIC64 | |
6 | select GENERIC_CLOCKEVENTS | |
7 | select GENERIC_CPU_DEVICES | |
8 | select GENERIC_IRQ_PROBE | |
9 | select GENERIC_IRQ_SHOW | |
10 | select HAVE_ARCH_TRACEHOOK | |
11 | select IRQ_DOMAIN | |
12 | select MODULES_USE_ELF_RELA | |
13 | select OF | |
14 | select OF_EARLY_FLATTREE | |
15 | select SOC_BUS | |
16 | select SPARSE_IRQ | |
17 | select USB_ARCH_HAS_HCD if USB_SUPPORT | |
18 | ||
19 | config GENERIC_CSUM | |
20 | def_bool y | |
21 | ||
22 | config GENERIC_HWEIGHT | |
23 | def_bool y | |
24 | ||
25 | config GENERIC_CALIBRATE_DELAY | |
26 | def_bool y | |
27 | ||
28 | config NO_IOPORT_MAP | |
29 | def_bool y | |
30 | ||
31 | config HAS_DMA | |
32 | def_bool y | |
33 | ||
34 | config FPU | |
35 | def_bool n | |
36 | ||
37 | config SWAP | |
38 | def_bool n | |
39 | ||
40 | config RWSEM_GENERIC_SPINLOCK | |
41 | def_bool y | |
42 | ||
43 | config TRACE_IRQFLAGS_SUPPORT | |
44 | def_bool n | |
45 | ||
46 | source "init/Kconfig" | |
47 | ||
48 | menu "Kernel features" | |
49 | ||
50 | source "kernel/Kconfig.preempt" | |
51 | ||
52 | source "kernel/Kconfig.freezer" | |
53 | ||
54 | source "kernel/Kconfig.hz" | |
55 | ||
56 | source "mm/Kconfig" | |
57 | ||
58 | config FORCE_MAX_ZONEORDER | |
59 | int "Maximum zone order" | |
60 | range 9 20 | |
61 | default "11" | |
62 | help | |
63 | The kernel memory allocator divides physically contiguous memory | |
64 | blocks into "zones", where each zone is a power of two number of | |
65 | pages. This option selects the largest power of two that the kernel | |
66 | keeps in the memory allocator. If you need to allocate very large | |
67 | blocks of physically contiguous memory, then you may need to | |
68 | increase this value. | |
69 | ||
70 | This config option is actually maximum order plus one. For example, | |
71 | a value of 11 means that the largest free memory block is 2^10 pages. | |
72 | ||
73 | endmenu | |
74 | ||
75 | source "arch/nios2/platform/Kconfig.platform" | |
76 | ||
77 | menu "Processor type and features" | |
78 | ||
79 | config MMU | |
80 | def_bool y | |
81 | ||
82 | config NIOS2_ALIGNMENT_TRAP | |
83 | bool "Catch alignment trap" | |
84 | default y | |
85 | help | |
86 | Nios II CPUs cannot fetch/store data which is not bus aligned, | |
87 | i.e., a 2 or 4 byte fetch must start at an address divisible by | |
88 | 2 or 4. Any non-aligned load/store instructions will be trapped and | |
89 | emulated in software if you say Y here, which has a performance | |
90 | impact. | |
91 | ||
92 | comment "Boot options" | |
93 | ||
94 | config CMDLINE_BOOL | |
95 | bool "Default bootloader kernel arguments" | |
96 | default y | |
97 | ||
98 | config CMDLINE | |
99 | string "Default kernel command string" | |
100 | default "" | |
101 | depends on CMDLINE_BOOL | |
102 | help | |
103 | On some platforms, there is currently no way for the boot loader to | |
104 | pass arguments to the kernel. For these platforms, you can supply | |
105 | some command-line options at build time by entering them here. In | |
106 | other cases you can specify kernel args so that you don't have | |
107 | to set them up in board prom initialization routines. | |
108 | ||
109 | config CMDLINE_FORCE | |
110 | bool "Force default kernel command string" | |
111 | depends on CMDLINE_BOOL | |
112 | help | |
113 | Set this to have arguments from the default kernel command string | |
114 | override those passed by the boot loader. | |
115 | ||
116 | config NIOS2_CMDLINE_IGNORE_DTB | |
117 | bool "Ignore kernel command string from DTB" | |
118 | depends on !CMDLINE_FORCE | |
119 | default y | |
120 | help | |
121 | Set this to ignore the bootargs property from the devicetree's | |
122 | chosen node and fall back to CMDLINE if nothing is passed. | |
123 | ||
124 | config NIOS2_PASS_CMDLINE | |
125 | bool "Passed kernel command line from u-boot" | |
126 | default n | |
127 | help | |
128 | Use bootargs env variable from u-boot for kernel command line. | |
129 | will override "Default kernel command string". | |
130 | Say N if you are unsure. | |
131 | ||
132 | endmenu | |
133 | ||
134 | menu "Advanced setup" | |
135 | ||
136 | config ADVANCED_OPTIONS | |
137 | bool "Prompt for advanced kernel configuration options" | |
138 | help | |
139 | ||
140 | comment "Default settings for advanced configuration options are used" | |
141 | depends on !ADVANCED_OPTIONS | |
142 | ||
143 | config NIOS2_KERNEL_MMU_REGION_BASE_BOOL | |
144 | bool "Set custom kernel MMU region base address" | |
145 | depends on ADVANCED_OPTIONS | |
146 | help | |
147 | This option allows you to set the virtual address of the kernel MMU region. | |
148 | ||
149 | Say N here unless you know what you are doing. | |
150 | ||
151 | config NIOS2_KERNEL_MMU_REGION_BASE | |
152 | hex "Virtual base address of the kernel MMU region " if NIOS2_KERNEL_MMU_REGION_BASE_BOOL | |
153 | default "0x80000000" | |
154 | help | |
155 | This option allows you to set the virtual base address of the kernel MMU region. | |
156 | ||
157 | config NIOS2_KERNEL_REGION_BASE_BOOL | |
158 | bool "Set custom kernel region base address" | |
159 | depends on ADVANCED_OPTIONS | |
160 | help | |
161 | This option allows you to set the virtual address of the kernel region. | |
162 | ||
163 | Say N here unless you know what you are doing. | |
164 | ||
165 | config NIOS2_KERNEL_REGION_BASE | |
166 | hex "Virtual base address of the kernel region " if NIOS2_KERNEL_REGION_BASE_BOOL | |
167 | default "0xc0000000" | |
168 | ||
169 | config NIOS2_IO_REGION_BASE_BOOL | |
170 | bool "Set custom I/O region base address" | |
171 | depends on ADVANCED_OPTIONS | |
172 | help | |
173 | This option allows you to set the virtual address of the I/O region. | |
174 | ||
175 | Say N here unless you know what you are doing. | |
176 | ||
177 | config NIOS2_IO_REGION_BASE | |
178 | hex "Virtual base address of the I/O region" if NIOS2_IO_REGION_BASE_BOOL | |
179 | default "0xe0000000" | |
180 | ||
181 | endmenu | |
182 | ||
183 | menu "Executable file formats" | |
184 | ||
185 | source "fs/Kconfig.binfmt" | |
186 | ||
187 | endmenu | |
188 | ||
189 | source "net/Kconfig" | |
190 | ||
191 | source "drivers/Kconfig" | |
192 | ||
193 | source "fs/Kconfig" | |
194 | ||
195 | source "arch/nios2/Kconfig.debug" | |
196 | ||
197 | source "security/Kconfig" | |
198 | ||
199 | source "crypto/Kconfig" | |
200 | ||
201 | source "lib/Kconfig" |