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b2441318 | 1 | # SPDX-License-Identifier: GPL-2.0 |
2fc8483f LFT |
2 | config NIOS2 |
3 | def_bool y | |
bb0eb050 | 4 | select TIMER_OF |
2fc8483f LFT |
5 | select GENERIC_ATOMIC64 |
6 | select GENERIC_CLOCKEVENTS | |
7 | select GENERIC_CPU_DEVICES | |
8 | select GENERIC_IRQ_PROBE | |
9 | select GENERIC_IRQ_SHOW | |
7f1e6141 LFT |
10 | select GENERIC_STRNCPY_FROM_USER |
11 | select GENERIC_STRNLEN_USER | |
2fc8483f | 12 | select HAVE_ARCH_TRACEHOOK |
d16d2be1 | 13 | select HAVE_ARCH_KGDB |
2fc8483f LFT |
14 | select IRQ_DOMAIN |
15 | select MODULES_USE_ELF_RELA | |
16 | select OF | |
17 | select OF_EARLY_FLATTREE | |
18 | select SOC_BUS | |
19 | select SPARSE_IRQ | |
20 | select USB_ARCH_HAS_HCD if USB_SUPPORT | |
fff7fb0b | 21 | select CPU_NO_EFFICIENT_FFS |
2fc8483f LFT |
22 | |
23 | config GENERIC_CSUM | |
24 | def_bool y | |
25 | ||
26 | config GENERIC_HWEIGHT | |
27 | def_bool y | |
28 | ||
29 | config GENERIC_CALIBRATE_DELAY | |
30 | def_bool y | |
31 | ||
32 | config NO_IOPORT_MAP | |
33 | def_bool y | |
34 | ||
35 | config HAS_DMA | |
36 | def_bool y | |
37 | ||
38 | config FPU | |
39 | def_bool n | |
40 | ||
41 | config SWAP | |
42 | def_bool n | |
43 | ||
44 | config RWSEM_GENERIC_SPINLOCK | |
45 | def_bool y | |
46 | ||
47 | config TRACE_IRQFLAGS_SUPPORT | |
48 | def_bool n | |
49 | ||
50 | source "init/Kconfig" | |
51 | ||
52 | menu "Kernel features" | |
53 | ||
54 | source "kernel/Kconfig.preempt" | |
55 | ||
56 | source "kernel/Kconfig.freezer" | |
57 | ||
58 | source "kernel/Kconfig.hz" | |
59 | ||
60 | source "mm/Kconfig" | |
61 | ||
62 | config FORCE_MAX_ZONEORDER | |
63 | int "Maximum zone order" | |
64 | range 9 20 | |
65 | default "11" | |
66 | help | |
67 | The kernel memory allocator divides physically contiguous memory | |
68 | blocks into "zones", where each zone is a power of two number of | |
69 | pages. This option selects the largest power of two that the kernel | |
70 | keeps in the memory allocator. If you need to allocate very large | |
71 | blocks of physically contiguous memory, then you may need to | |
72 | increase this value. | |
73 | ||
74 | This config option is actually maximum order plus one. For example, | |
75 | a value of 11 means that the largest free memory block is 2^10 pages. | |
76 | ||
77 | endmenu | |
78 | ||
79 | source "arch/nios2/platform/Kconfig.platform" | |
80 | ||
81 | menu "Processor type and features" | |
82 | ||
83 | config MMU | |
84 | def_bool y | |
85 | ||
6e5c8f5f TK |
86 | config NR_CPUS |
87 | int | |
88 | default "1" | |
89 | ||
2fc8483f LFT |
90 | config NIOS2_ALIGNMENT_TRAP |
91 | bool "Catch alignment trap" | |
92 | default y | |
93 | help | |
94 | Nios II CPUs cannot fetch/store data which is not bus aligned, | |
95 | i.e., a 2 or 4 byte fetch must start at an address divisible by | |
96 | 2 or 4. Any non-aligned load/store instructions will be trapped and | |
97 | emulated in software if you say Y here, which has a performance | |
98 | impact. | |
99 | ||
100 | comment "Boot options" | |
101 | ||
102 | config CMDLINE_BOOL | |
103 | bool "Default bootloader kernel arguments" | |
104 | default y | |
105 | ||
106 | config CMDLINE | |
107 | string "Default kernel command string" | |
108 | default "" | |
109 | depends on CMDLINE_BOOL | |
110 | help | |
111 | On some platforms, there is currently no way for the boot loader to | |
112 | pass arguments to the kernel. For these platforms, you can supply | |
113 | some command-line options at build time by entering them here. In | |
114 | other cases you can specify kernel args so that you don't have | |
115 | to set them up in board prom initialization routines. | |
116 | ||
117 | config CMDLINE_FORCE | |
118 | bool "Force default kernel command string" | |
119 | depends on CMDLINE_BOOL | |
120 | help | |
121 | Set this to have arguments from the default kernel command string | |
122 | override those passed by the boot loader. | |
123 | ||
124 | config NIOS2_CMDLINE_IGNORE_DTB | |
125 | bool "Ignore kernel command string from DTB" | |
2b2b4074 | 126 | depends on CMDLINE_BOOL |
2fc8483f LFT |
127 | depends on !CMDLINE_FORCE |
128 | default y | |
129 | help | |
130 | Set this to ignore the bootargs property from the devicetree's | |
131 | chosen node and fall back to CMDLINE if nothing is passed. | |
132 | ||
133 | config NIOS2_PASS_CMDLINE | |
134 | bool "Passed kernel command line from u-boot" | |
135 | default n | |
136 | help | |
137 | Use bootargs env variable from u-boot for kernel command line. | |
138 | will override "Default kernel command string". | |
139 | Say N if you are unsure. | |
140 | ||
01623627 LFT |
141 | config NIOS2_BOOT_LINK_OFFSET |
142 | hex "Link address offset for booting" | |
143 | default "0x00500000" | |
144 | help | |
145 | This option allows you to set the link address offset of the zImage. | |
146 | This can be useful if you are on a board which has a small amount of | |
147 | memory. | |
148 | ||
2fc8483f LFT |
149 | endmenu |
150 | ||
151 | menu "Advanced setup" | |
152 | ||
153 | config ADVANCED_OPTIONS | |
154 | bool "Prompt for advanced kernel configuration options" | |
155 | help | |
156 | ||
157 | comment "Default settings for advanced configuration options are used" | |
158 | depends on !ADVANCED_OPTIONS | |
159 | ||
160 | config NIOS2_KERNEL_MMU_REGION_BASE_BOOL | |
161 | bool "Set custom kernel MMU region base address" | |
162 | depends on ADVANCED_OPTIONS | |
163 | help | |
164 | This option allows you to set the virtual address of the kernel MMU region. | |
165 | ||
166 | Say N here unless you know what you are doing. | |
167 | ||
168 | config NIOS2_KERNEL_MMU_REGION_BASE | |
169 | hex "Virtual base address of the kernel MMU region " if NIOS2_KERNEL_MMU_REGION_BASE_BOOL | |
170 | default "0x80000000" | |
171 | help | |
172 | This option allows you to set the virtual base address of the kernel MMU region. | |
173 | ||
174 | config NIOS2_KERNEL_REGION_BASE_BOOL | |
175 | bool "Set custom kernel region base address" | |
176 | depends on ADVANCED_OPTIONS | |
177 | help | |
178 | This option allows you to set the virtual address of the kernel region. | |
179 | ||
180 | Say N here unless you know what you are doing. | |
181 | ||
182 | config NIOS2_KERNEL_REGION_BASE | |
183 | hex "Virtual base address of the kernel region " if NIOS2_KERNEL_REGION_BASE_BOOL | |
184 | default "0xc0000000" | |
185 | ||
186 | config NIOS2_IO_REGION_BASE_BOOL | |
187 | bool "Set custom I/O region base address" | |
188 | depends on ADVANCED_OPTIONS | |
189 | help | |
190 | This option allows you to set the virtual address of the I/O region. | |
191 | ||
192 | Say N here unless you know what you are doing. | |
193 | ||
194 | config NIOS2_IO_REGION_BASE | |
195 | hex "Virtual base address of the I/O region" if NIOS2_IO_REGION_BASE_BOOL | |
196 | default "0xe0000000" | |
197 | ||
198 | endmenu | |
199 | ||
200 | menu "Executable file formats" | |
201 | ||
202 | source "fs/Kconfig.binfmt" | |
203 | ||
204 | endmenu | |
205 | ||
206 | source "net/Kconfig" | |
207 | ||
208 | source "drivers/Kconfig" | |
209 | ||
210 | source "fs/Kconfig" | |
211 | ||
212 | source "arch/nios2/Kconfig.debug" | |
213 | ||
214 | source "security/Kconfig" | |
215 | ||
216 | source "crypto/Kconfig" | |
217 | ||
218 | source "lib/Kconfig" |