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ec8f24b7 | 1 | # SPDX-License-Identifier: GPL-2.0-only |
575ca288 MS |
2 | config MICROBLAZE |
3 | def_bool y | |
942fa985 | 4 | select ARCH_32BIT_OFF_T |
17c46a6a | 5 | select ARCH_NO_SWAP |
aef0f78e | 6 | select ARCH_HAS_BINFMT_FLAT if !MMU |
d3b9f659 | 7 | select ARCH_HAS_DMA_PREP_COHERENT |
957e3fac | 8 | select ARCH_HAS_GCOV_PROFILE_ALL |
5411ad27 CH |
9 | select ARCH_HAS_SYNC_DMA_FOR_CPU |
10 | select ARCH_HAS_SYNC_DMA_FOR_DEVICE | |
fa7e2247 | 11 | select ARCH_HAS_DMA_SET_UNCACHED if !MMU |
355f65a3 | 12 | select ARCH_MIGHT_HAVE_PC_PARPORT |
c1d7e01d | 13 | select ARCH_WANT_IPC_PARSE_VERSION |
10916706 | 14 | select BUILDTIME_TABLE_SORT |
bb0eb050 | 15 | select TIMER_OF |
25213388 MS |
16 | select CLONE_BACKWARDS3 |
17 | select COMMON_CLK | |
04e3543e | 18 | select DMA_DIRECT_REMAP if MMU |
25213388 MS |
19 | select GENERIC_ATOMIC64 |
20 | select GENERIC_CLOCKEVENTS | |
21 | select GENERIC_CPU_DEVICES | |
22 | select GENERIC_IDLE_POLL_SETUP | |
b6e31629 | 23 | select GENERIC_IRQ_PROBE |
9d61c18b | 24 | select GENERIC_IRQ_SHOW |
1b34d160 | 25 | select GENERIC_PCI_IOMAP |
839396ab | 26 | select GENERIC_SCHED_CLOCK |
7b13277b | 27 | select HAVE_ARCH_HASH |
25213388 | 28 | select HAVE_ARCH_KGDB |
282a181b | 29 | select HAVE_ARCH_SECCOMP |
25213388 | 30 | select HAVE_DEBUG_KMEMLEAK |
2602276d | 31 | select HAVE_DMA_CONTIGUOUS |
25213388 MS |
32 | select HAVE_DYNAMIC_FTRACE |
33 | select HAVE_FTRACE_MCOUNT_RECORD | |
34 | select HAVE_FUNCTION_GRAPH_TRACER | |
25213388 | 35 | select HAVE_FUNCTION_TRACER |
25213388 | 36 | select HAVE_OPROFILE |
eb01d42a | 37 | select HAVE_PCI |
25213388 | 38 | select IRQ_DOMAIN |
0547dc78 | 39 | select XILINX_INTC |
786d35d4 | 40 | select MODULES_USE_ELF_RELA |
25213388 MS |
41 | select OF |
42 | select OF_EARLY_FLATTREE | |
2eac9c2d | 43 | select PCI_DOMAINS_GENERIC if PCI |
20f1b79d | 44 | select PCI_SYSCALL if PCI |
25213388 MS |
45 | select TRACING_SUPPORT |
46 | select VIRT_TO_BUS | |
fff7fb0b | 47 | select CPU_NO_EFFICIENT_FFS |
6137fed0 | 48 | select MMU_GATHER_NO_RANGE if MMU |
6bf8be7f | 49 | select SPARSE_IRQ |
5e6e9852 | 50 | select SET_FS |
575ca288 | 51 | |
206d3642 BM |
52 | # Endianness selection |
53 | choice | |
54 | prompt "Endianness selection" | |
428dbf15 | 55 | default CPU_LITTLE_ENDIAN |
206d3642 BM |
56 | help |
57 | microblaze architectures can be configured for either little or | |
58 | big endian formats. Be sure to select the appropriate mode. | |
59 | ||
60 | config CPU_BIG_ENDIAN | |
61 | bool "Big endian" | |
62 | ||
63 | config CPU_LITTLE_ENDIAN | |
64 | bool "Little endian" | |
65 | ||
66 | endchoice | |
67 | ||
4e2e4124 MS |
68 | config ZONE_DMA |
69 | def_bool y | |
70 | ||
575ca288 MS |
71 | config ARCH_HAS_ILOG2_U32 |
72 | def_bool n | |
73 | ||
74 | config ARCH_HAS_ILOG2_U64 | |
75 | def_bool n | |
76 | ||
575ca288 MS |
77 | config GENERIC_HWEIGHT |
78 | def_bool y | |
79 | ||
575ca288 MS |
80 | config GENERIC_CALIBRATE_DELAY |
81 | def_bool y | |
82 | ||
14f87389 RLB |
83 | config GENERIC_CSUM |
84 | def_bool y | |
85 | ||
24b45a12 MS |
86 | config STACKTRACE_SUPPORT |
87 | def_bool y | |
88 | ||
bf2d8096 MS |
89 | config LOCKDEP_SUPPORT |
90 | def_bool y | |
91 | ||
c24cf712 | 92 | source "arch/microblaze/Kconfig.platform" |
575ca288 MS |
93 | |
94 | menu "Processor type and features" | |
95 | ||
575ca288 MS |
96 | source "kernel/Kconfig.hz" |
97 | ||
98 | config MMU | |
a116f6d5 MS |
99 | bool "MMU support" |
100 | default n | |
575ca288 | 101 | |
575ca288 MS |
102 | comment "Boot options" |
103 | ||
104 | config CMDLINE_BOOL | |
105 | bool "Default bootloader kernel arguments" | |
106 | ||
107 | config CMDLINE | |
108 | string "Default kernel command string" | |
109 | depends on CMDLINE_BOOL | |
110 | default "console=ttyUL0,115200" | |
111 | help | |
112 | On some architectures there is currently no way for the boot loader | |
113 | to pass arguments to the kernel. For these architectures, you should | |
114 | supply some command-line options at build time by entering them | |
115 | here. | |
116 | ||
117 | config CMDLINE_FORCE | |
118 | bool "Force default kernel command string" | |
119 | depends on CMDLINE_BOOL | |
120 | default n | |
121 | help | |
122 | Set this to have arguments from the default kernel command string | |
123 | override those passed by the boot loader. | |
124 | ||
575ca288 MS |
125 | endmenu |
126 | ||
b408e2c2 | 127 | menu "Kernel features" |
a116f6d5 | 128 | |
4cbbbb43 MS |
129 | config NR_CPUS |
130 | int | |
131 | default "1" | |
132 | ||
a116f6d5 MS |
133 | config ADVANCED_OPTIONS |
134 | bool "Prompt for advanced kernel configuration options" | |
a116f6d5 MS |
135 | help |
136 | This option will enable prompting for a variety of advanced kernel | |
137 | configuration options. These options can cause the kernel to not | |
138 | work if they are set incorrectly, but can be used to optimize certain | |
139 | aspects of kernel memory management. | |
140 | ||
141 | Unless you know what you are doing, say N here. | |
142 | ||
143 | comment "Default settings for advanced configuration options are used" | |
144 | depends on !ADVANCED_OPTIONS | |
145 | ||
3a0d7a4d MS |
146 | config XILINX_UNCACHED_SHADOW |
147 | bool "Are you using uncached shadow for RAM ?" | |
148 | depends on ADVANCED_OPTIONS && !MMU | |
149 | default n | |
150 | help | |
151 | This is needed to be able to allocate uncachable memory regions. | |
152 | The feature requires the design to define the RAM memory controller | |
153 | window to be twice as large as the actual physical memory. | |
154 | ||
2f2f371f MS |
155 | config HIGHMEM |
156 | bool "High memory support" | |
a116f6d5 | 157 | depends on MMU |
a116f6d5 | 158 | help |
2f2f371f MS |
159 | The address space of Microblaze processors is only 4 Gigabytes large |
160 | and it has to accommodate user address space, kernel address | |
161 | space as well as some memory mapped IO. That means that, if you | |
162 | have a large amount of physical memory and/or IO, not all of the | |
163 | memory can be "permanently mapped" by the kernel. The physical | |
164 | memory that is not permanently mapped is called "high memory". | |
a116f6d5 | 165 | |
2f2f371f | 166 | If unsure, say n. |
a116f6d5 MS |
167 | |
168 | config LOWMEM_SIZE_BOOL | |
169 | bool "Set maximum low memory" | |
b8a84059 | 170 | depends on ADVANCED_OPTIONS && MMU |
a116f6d5 MS |
171 | help |
172 | This option allows you to set the maximum amount of memory which | |
173 | will be used as "low memory", that is, memory which the kernel can | |
174 | access directly, without having to set up a kernel virtual mapping. | |
175 | This can be useful in optimizing the layout of kernel virtual | |
176 | memory. | |
177 | ||
178 | Say N here unless you know what you are doing. | |
179 | ||
180 | config LOWMEM_SIZE | |
181 | hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL | |
a116f6d5 MS |
182 | default "0x30000000" |
183 | ||
0b9b0200 MS |
184 | config MANUAL_RESET_VECTOR |
185 | hex "Microblaze reset vector address setup" | |
186 | default "0x0" | |
187 | help | |
188 | Set this option to have the kernel override the CPU Reset vector. | |
189 | If zero, no change will be made to the MicroBlaze reset vector at | |
190 | address 0x0. | |
191 | If non-zero, a jump instruction to this address, will be written | |
192 | to the reset vector at address 0x0. | |
193 | If you are unsure, set it to default value 0x0. | |
194 | ||
a116f6d5 MS |
195 | config KERNEL_START_BOOL |
196 | bool "Set custom kernel base address" | |
197 | depends on ADVANCED_OPTIONS | |
198 | help | |
199 | This option allows you to set the kernel virtual address at which | |
200 | the kernel will map low memory (the kernel image will be linked at | |
201 | this address). This can be useful in optimizing the virtual memory | |
202 | layout of the system. | |
203 | ||
204 | Say N here unless you know what you are doing. | |
205 | ||
206 | config KERNEL_START | |
207 | hex "Virtual address of kernel base" if KERNEL_START_BOOL | |
208 | default "0xc0000000" if MMU | |
209 | default KERNEL_BASE_ADDR if !MMU | |
210 | ||
211 | config TASK_SIZE_BOOL | |
212 | bool "Set custom user task size" | |
b8a84059 | 213 | depends on ADVANCED_OPTIONS && MMU |
a116f6d5 MS |
214 | help |
215 | This option allows you to set the amount of virtual address space | |
216 | allocated to user tasks. This can be useful in optimizing the | |
217 | virtual memory layout of the system. | |
218 | ||
219 | Say N here unless you know what you are doing. | |
220 | ||
221 | config TASK_SIZE | |
222 | hex "Size of user task space" if TASK_SIZE_BOOL | |
a116f6d5 MS |
223 | default "0x80000000" |
224 | ||
ba9c4f88 SM |
225 | choice |
226 | prompt "Page size" | |
227 | default MICROBLAZE_4K_PAGES | |
228 | depends on ADVANCED_OPTIONS && !MMU | |
229 | help | |
230 | Select the kernel logical page size. Increasing the page size | |
231 | will reduce software overhead at each page boundary, allow | |
232 | hardware prefetch mechanisms to be more effective, and allow | |
233 | larger dma transfers increasing IO efficiency and reducing | |
234 | overhead. However the utilization of memory will increase. | |
235 | For example, each cached file will using a multiple of the | |
236 | page size to hold its contents and the difference between the | |
237 | end of file and the end of page is wasted. | |
238 | ||
239 | If unsure, choose 4K_PAGES. | |
240 | ||
241 | config MICROBLAZE_4K_PAGES | |
242 | bool "4k page size" | |
243 | ||
ba9c4f88 SM |
244 | config MICROBLAZE_16K_PAGES |
245 | bool "16k page size" | |
246 | ||
6e80cff5 MS |
247 | config MICROBLAZE_64K_PAGES |
248 | bool "64k page size" | |
ba9c4f88 SM |
249 | |
250 | endchoice | |
251 | ||
575ca288 MS |
252 | endmenu |
253 | ||
a6475c13 MS |
254 | menu "Bus Options" |
255 | ||
733cc218 MS |
256 | config PCI_XILINX |
257 | bool "Xilinx PCI host bridge support" | |
258 | depends on PCI | |
259 | ||
a6475c13 | 260 | endmenu |