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1 | # SPDX-License-Identifier: GPL-2.0-only | |
2 | config MICROBLAZE | |
3 | def_bool y | |
4 | select ARCH_32BIT_OFF_T | |
5 | select ARCH_NO_SWAP | |
6 | select ARCH_HAS_DMA_PREP_COHERENT | |
7 | select ARCH_HAS_GCOV_PROFILE_ALL | |
8 | select ARCH_HAS_SYNC_DMA_FOR_CPU | |
9 | select ARCH_HAS_SYNC_DMA_FOR_DEVICE | |
10 | select ARCH_MIGHT_HAVE_PC_PARPORT | |
11 | select ARCH_WANT_IPC_PARSE_VERSION | |
12 | select BUILDTIME_TABLE_SORT | |
13 | select TIMER_OF | |
14 | select CLONE_BACKWARDS3 | |
15 | select COMMON_CLK | |
16 | select DMA_DIRECT_REMAP | |
17 | select GENERIC_ATOMIC64 | |
18 | select GENERIC_CPU_DEVICES | |
19 | select GENERIC_IDLE_POLL_SETUP | |
20 | select GENERIC_IRQ_PROBE | |
21 | select GENERIC_IRQ_SHOW | |
22 | select GENERIC_PCI_IOMAP | |
23 | select GENERIC_SCHED_CLOCK | |
24 | select HAVE_ARCH_HASH | |
25 | select HAVE_ARCH_KGDB | |
26 | select HAVE_ARCH_SECCOMP | |
27 | select HAVE_DEBUG_KMEMLEAK | |
28 | select HAVE_DMA_CONTIGUOUS | |
29 | select HAVE_DYNAMIC_FTRACE | |
30 | select HAVE_FTRACE_MCOUNT_RECORD | |
31 | select HAVE_FUNCTION_GRAPH_TRACER | |
32 | select HAVE_FUNCTION_TRACER | |
33 | select HAVE_OPROFILE | |
34 | select HAVE_PCI | |
35 | select IRQ_DOMAIN | |
36 | select XILINX_INTC | |
37 | select MODULES_USE_ELF_RELA | |
38 | select OF | |
39 | select OF_EARLY_FLATTREE | |
40 | select PCI_DOMAINS_GENERIC if PCI | |
41 | select PCI_SYSCALL if PCI | |
42 | select TRACING_SUPPORT | |
43 | select VIRT_TO_BUS | |
44 | select CPU_NO_EFFICIENT_FFS | |
45 | select MMU_GATHER_NO_RANGE | |
46 | select SPARSE_IRQ | |
47 | select SET_FS | |
48 | ||
49 | # Endianness selection | |
50 | choice | |
51 | prompt "Endianness selection" | |
52 | default CPU_LITTLE_ENDIAN | |
53 | help | |
54 | microblaze architectures can be configured for either little or | |
55 | big endian formats. Be sure to select the appropriate mode. | |
56 | ||
57 | config CPU_BIG_ENDIAN | |
58 | bool "Big endian" | |
59 | ||
60 | config CPU_LITTLE_ENDIAN | |
61 | bool "Little endian" | |
62 | ||
63 | endchoice | |
64 | ||
65 | config ZONE_DMA | |
66 | def_bool y | |
67 | ||
68 | config ARCH_HAS_ILOG2_U32 | |
69 | def_bool n | |
70 | ||
71 | config ARCH_HAS_ILOG2_U64 | |
72 | def_bool n | |
73 | ||
74 | config GENERIC_HWEIGHT | |
75 | def_bool y | |
76 | ||
77 | config GENERIC_CALIBRATE_DELAY | |
78 | def_bool y | |
79 | ||
80 | config GENERIC_CSUM | |
81 | def_bool y | |
82 | ||
83 | config STACKTRACE_SUPPORT | |
84 | def_bool y | |
85 | ||
86 | config LOCKDEP_SUPPORT | |
87 | def_bool y | |
88 | ||
89 | source "arch/microblaze/Kconfig.platform" | |
90 | ||
91 | menu "Processor type and features" | |
92 | ||
93 | source "kernel/Kconfig.hz" | |
94 | ||
95 | config MMU | |
96 | def_bool y | |
97 | ||
98 | comment "Boot options" | |
99 | ||
100 | config CMDLINE_BOOL | |
101 | bool "Default bootloader kernel arguments" | |
102 | ||
103 | config CMDLINE | |
104 | string "Default kernel command string" | |
105 | depends on CMDLINE_BOOL | |
106 | default "console=ttyUL0,115200" | |
107 | help | |
108 | On some architectures there is currently no way for the boot loader | |
109 | to pass arguments to the kernel. For these architectures, you should | |
110 | supply some command-line options at build time by entering them | |
111 | here. | |
112 | ||
113 | config CMDLINE_FORCE | |
114 | bool "Force default kernel command string" | |
115 | depends on CMDLINE_BOOL | |
116 | default n | |
117 | help | |
118 | Set this to have arguments from the default kernel command string | |
119 | override those passed by the boot loader. | |
120 | ||
121 | endmenu | |
122 | ||
123 | menu "Kernel features" | |
124 | ||
125 | config NR_CPUS | |
126 | int | |
127 | default "1" | |
128 | ||
129 | config ADVANCED_OPTIONS | |
130 | bool "Prompt for advanced kernel configuration options" | |
131 | help | |
132 | This option will enable prompting for a variety of advanced kernel | |
133 | configuration options. These options can cause the kernel to not | |
134 | work if they are set incorrectly, but can be used to optimize certain | |
135 | aspects of kernel memory management. | |
136 | ||
137 | Unless you know what you are doing, say N here. | |
138 | ||
139 | comment "Default settings for advanced configuration options are used" | |
140 | depends on !ADVANCED_OPTIONS | |
141 | ||
142 | config HIGHMEM | |
143 | bool "High memory support" | |
144 | select KMAP_LOCAL | |
145 | help | |
146 | The address space of Microblaze processors is only 4 Gigabytes large | |
147 | and it has to accommodate user address space, kernel address | |
148 | space as well as some memory mapped IO. That means that, if you | |
149 | have a large amount of physical memory and/or IO, not all of the | |
150 | memory can be "permanently mapped" by the kernel. The physical | |
151 | memory that is not permanently mapped is called "high memory". | |
152 | ||
153 | If unsure, say n. | |
154 | ||
155 | config LOWMEM_SIZE_BOOL | |
156 | bool "Set maximum low memory" | |
157 | depends on ADVANCED_OPTIONS | |
158 | help | |
159 | This option allows you to set the maximum amount of memory which | |
160 | will be used as "low memory", that is, memory which the kernel can | |
161 | access directly, without having to set up a kernel virtual mapping. | |
162 | This can be useful in optimizing the layout of kernel virtual | |
163 | memory. | |
164 | ||
165 | Say N here unless you know what you are doing. | |
166 | ||
167 | config LOWMEM_SIZE | |
168 | hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL | |
169 | default "0x30000000" | |
170 | ||
171 | config MANUAL_RESET_VECTOR | |
172 | hex "Microblaze reset vector address setup" | |
173 | default "0x0" | |
174 | help | |
175 | Set this option to have the kernel override the CPU Reset vector. | |
176 | If zero, no change will be made to the MicroBlaze reset vector at | |
177 | address 0x0. | |
178 | If non-zero, a jump instruction to this address, will be written | |
179 | to the reset vector at address 0x0. | |
180 | If you are unsure, set it to default value 0x0. | |
181 | ||
182 | config KERNEL_START_BOOL | |
183 | bool "Set custom kernel base address" | |
184 | depends on ADVANCED_OPTIONS | |
185 | help | |
186 | This option allows you to set the kernel virtual address at which | |
187 | the kernel will map low memory (the kernel image will be linked at | |
188 | this address). This can be useful in optimizing the virtual memory | |
189 | layout of the system. | |
190 | ||
191 | Say N here unless you know what you are doing. | |
192 | ||
193 | config KERNEL_START | |
194 | hex "Virtual address of kernel base" if KERNEL_START_BOOL | |
195 | default "0xc0000000" | |
196 | ||
197 | config TASK_SIZE_BOOL | |
198 | bool "Set custom user task size" | |
199 | depends on ADVANCED_OPTIONS | |
200 | help | |
201 | This option allows you to set the amount of virtual address space | |
202 | allocated to user tasks. This can be useful in optimizing the | |
203 | virtual memory layout of the system. | |
204 | ||
205 | Say N here unless you know what you are doing. | |
206 | ||
207 | config TASK_SIZE | |
208 | hex "Size of user task space" if TASK_SIZE_BOOL | |
209 | default "0x80000000" | |
210 | ||
211 | endmenu | |
212 | ||
213 | menu "Bus Options" | |
214 | ||
215 | config PCI_XILINX | |
216 | bool "Xilinx PCI host bridge support" | |
217 | depends on PCI | |
218 | ||
219 | endmenu |