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2fc8483f LFT |
1 | config NIOS2 |
2 | def_bool y | |
2fc8483f LFT |
3 | select CLKSRC_OF |
4 | select GENERIC_ATOMIC64 | |
5 | select GENERIC_CLOCKEVENTS | |
6 | select GENERIC_CPU_DEVICES | |
7 | select GENERIC_IRQ_PROBE | |
8 | select GENERIC_IRQ_SHOW | |
7f1e6141 LFT |
9 | select GENERIC_STRNCPY_FROM_USER |
10 | select GENERIC_STRNLEN_USER | |
2fc8483f | 11 | select HAVE_ARCH_TRACEHOOK |
d16d2be1 | 12 | select HAVE_ARCH_KGDB |
2fc8483f LFT |
13 | select IRQ_DOMAIN |
14 | select MODULES_USE_ELF_RELA | |
15 | select OF | |
16 | select OF_EARLY_FLATTREE | |
17 | select SOC_BUS | |
18 | select SPARSE_IRQ | |
19 | select USB_ARCH_HAS_HCD if USB_SUPPORT | |
fff7fb0b | 20 | select CPU_NO_EFFICIENT_FFS |
2fc8483f LFT |
21 | |
22 | config GENERIC_CSUM | |
23 | def_bool y | |
24 | ||
25 | config GENERIC_HWEIGHT | |
26 | def_bool y | |
27 | ||
28 | config GENERIC_CALIBRATE_DELAY | |
29 | def_bool y | |
30 | ||
31 | config NO_IOPORT_MAP | |
32 | def_bool y | |
33 | ||
34 | config HAS_DMA | |
35 | def_bool y | |
36 | ||
37 | config FPU | |
38 | def_bool n | |
39 | ||
40 | config SWAP | |
41 | def_bool n | |
42 | ||
43 | config RWSEM_GENERIC_SPINLOCK | |
44 | def_bool y | |
45 | ||
46 | config TRACE_IRQFLAGS_SUPPORT | |
47 | def_bool n | |
48 | ||
49 | source "init/Kconfig" | |
50 | ||
51 | menu "Kernel features" | |
52 | ||
53 | source "kernel/Kconfig.preempt" | |
54 | ||
55 | source "kernel/Kconfig.freezer" | |
56 | ||
57 | source "kernel/Kconfig.hz" | |
58 | ||
59 | source "mm/Kconfig" | |
60 | ||
61 | config FORCE_MAX_ZONEORDER | |
62 | int "Maximum zone order" | |
63 | range 9 20 | |
64 | default "11" | |
65 | help | |
66 | The kernel memory allocator divides physically contiguous memory | |
67 | blocks into "zones", where each zone is a power of two number of | |
68 | pages. This option selects the largest power of two that the kernel | |
69 | keeps in the memory allocator. If you need to allocate very large | |
70 | blocks of physically contiguous memory, then you may need to | |
71 | increase this value. | |
72 | ||
73 | This config option is actually maximum order plus one. For example, | |
74 | a value of 11 means that the largest free memory block is 2^10 pages. | |
75 | ||
76 | endmenu | |
77 | ||
78 | source "arch/nios2/platform/Kconfig.platform" | |
79 | ||
80 | menu "Processor type and features" | |
81 | ||
82 | config MMU | |
83 | def_bool y | |
84 | ||
6e5c8f5f TK |
85 | config NR_CPUS |
86 | int | |
87 | default "1" | |
88 | ||
2fc8483f LFT |
89 | config NIOS2_ALIGNMENT_TRAP |
90 | bool "Catch alignment trap" | |
91 | default y | |
92 | help | |
93 | Nios II CPUs cannot fetch/store data which is not bus aligned, | |
94 | i.e., a 2 or 4 byte fetch must start at an address divisible by | |
95 | 2 or 4. Any non-aligned load/store instructions will be trapped and | |
96 | emulated in software if you say Y here, which has a performance | |
97 | impact. | |
98 | ||
99 | comment "Boot options" | |
100 | ||
101 | config CMDLINE_BOOL | |
102 | bool "Default bootloader kernel arguments" | |
103 | default y | |
104 | ||
105 | config CMDLINE | |
106 | string "Default kernel command string" | |
107 | default "" | |
108 | depends on CMDLINE_BOOL | |
109 | help | |
110 | On some platforms, there is currently no way for the boot loader to | |
111 | pass arguments to the kernel. For these platforms, you can supply | |
112 | some command-line options at build time by entering them here. In | |
113 | other cases you can specify kernel args so that you don't have | |
114 | to set them up in board prom initialization routines. | |
115 | ||
116 | config CMDLINE_FORCE | |
117 | bool "Force default kernel command string" | |
118 | depends on CMDLINE_BOOL | |
119 | help | |
120 | Set this to have arguments from the default kernel command string | |
121 | override those passed by the boot loader. | |
122 | ||
123 | config NIOS2_CMDLINE_IGNORE_DTB | |
124 | bool "Ignore kernel command string from DTB" | |
2b2b4074 | 125 | depends on CMDLINE_BOOL |
2fc8483f LFT |
126 | depends on !CMDLINE_FORCE |
127 | default y | |
128 | help | |
129 | Set this to ignore the bootargs property from the devicetree's | |
130 | chosen node and fall back to CMDLINE if nothing is passed. | |
131 | ||
132 | config NIOS2_PASS_CMDLINE | |
133 | bool "Passed kernel command line from u-boot" | |
134 | default n | |
135 | help | |
136 | Use bootargs env variable from u-boot for kernel command line. | |
137 | will override "Default kernel command string". | |
138 | Say N if you are unsure. | |
139 | ||
01623627 LFT |
140 | config NIOS2_BOOT_LINK_OFFSET |
141 | hex "Link address offset for booting" | |
142 | default "0x00500000" | |
143 | help | |
144 | This option allows you to set the link address offset of the zImage. | |
145 | This can be useful if you are on a board which has a small amount of | |
146 | memory. | |
147 | ||
2fc8483f LFT |
148 | endmenu |
149 | ||
150 | menu "Advanced setup" | |
151 | ||
152 | config ADVANCED_OPTIONS | |
153 | bool "Prompt for advanced kernel configuration options" | |
154 | help | |
155 | ||
156 | comment "Default settings for advanced configuration options are used" | |
157 | depends on !ADVANCED_OPTIONS | |
158 | ||
159 | config NIOS2_KERNEL_MMU_REGION_BASE_BOOL | |
160 | bool "Set custom kernel MMU region base address" | |
161 | depends on ADVANCED_OPTIONS | |
162 | help | |
163 | This option allows you to set the virtual address of the kernel MMU region. | |
164 | ||
165 | Say N here unless you know what you are doing. | |
166 | ||
167 | config NIOS2_KERNEL_MMU_REGION_BASE | |
168 | hex "Virtual base address of the kernel MMU region " if NIOS2_KERNEL_MMU_REGION_BASE_BOOL | |
169 | default "0x80000000" | |
170 | help | |
171 | This option allows you to set the virtual base address of the kernel MMU region. | |
172 | ||
173 | config NIOS2_KERNEL_REGION_BASE_BOOL | |
174 | bool "Set custom kernel region base address" | |
175 | depends on ADVANCED_OPTIONS | |
176 | help | |
177 | This option allows you to set the virtual address of the kernel region. | |
178 | ||
179 | Say N here unless you know what you are doing. | |
180 | ||
181 | config NIOS2_KERNEL_REGION_BASE | |
182 | hex "Virtual base address of the kernel region " if NIOS2_KERNEL_REGION_BASE_BOOL | |
183 | default "0xc0000000" | |
184 | ||
185 | config NIOS2_IO_REGION_BASE_BOOL | |
186 | bool "Set custom I/O region base address" | |
187 | depends on ADVANCED_OPTIONS | |
188 | help | |
189 | This option allows you to set the virtual address of the I/O region. | |
190 | ||
191 | Say N here unless you know what you are doing. | |
192 | ||
193 | config NIOS2_IO_REGION_BASE | |
194 | hex "Virtual base address of the I/O region" if NIOS2_IO_REGION_BASE_BOOL | |
195 | default "0xe0000000" | |
196 | ||
197 | endmenu | |
198 | ||
199 | menu "Executable file formats" | |
200 | ||
201 | source "fs/Kconfig.binfmt" | |
202 | ||
203 | endmenu | |
204 | ||
205 | source "net/Kconfig" | |
206 | ||
207 | source "drivers/Kconfig" | |
208 | ||
209 | source "fs/Kconfig" | |
210 | ||
211 | source "arch/nios2/Kconfig.debug" | |
212 | ||
213 | source "security/Kconfig" | |
214 | ||
215 | source "crypto/Kconfig" | |
216 | ||
217 | source "lib/Kconfig" |