Root/arch/microblaze/Kconfig

1config MICROBLAZE
2    def_bool y
3    select HAVE_MEMBLOCK
4    select HAVE_FUNCTION_TRACER
5    select HAVE_FUNCTION_TRACE_MCOUNT_TEST
6    select HAVE_FUNCTION_GRAPH_TRACER
7    select HAVE_DYNAMIC_FTRACE
8    select HAVE_FTRACE_MCOUNT_RECORD
9    select USB_ARCH_HAS_EHCI
10    select ARCH_WANT_OPTIONAL_GPIOLIB
11    select HAVE_OPROFILE
12    select HAVE_ARCH_KGDB
13    select HAVE_DMA_ATTRS
14    select HAVE_DMA_API_DEBUG
15    select TRACING_SUPPORT
16    select OF
17    select OF_FLATTREE
18
19config SWAP
20    def_bool n
21
22config RWSEM_GENERIC_SPINLOCK
23    def_bool y
24
25config RWSEM_XCHGADD_ALGORITHM
26    bool
27
28config ARCH_HAS_ILOG2_U32
29    def_bool n
30
31config ARCH_HAS_ILOG2_U64
32    def_bool n
33
34config GENERIC_FIND_NEXT_BIT
35    def_bool y
36
37config GENERIC_HWEIGHT
38    def_bool y
39
40config GENERIC_HARDIRQS
41    def_bool y
42
43config GENERIC_IRQ_PROBE
44    def_bool y
45
46config GENERIC_CALIBRATE_DELAY
47    def_bool y
48
49config GENERIC_TIME_VSYSCALL
50    def_bool n
51
52config GENERIC_CLOCKEVENTS
53    def_bool y
54
55config GENERIC_HARDIRQS_NO__DO_IRQ
56    def_bool y
57
58config GENERIC_GPIO
59    def_bool y
60
61config GENERIC_CSUM
62    def_bool y
63
64config STACKTRACE_SUPPORT
65    def_bool y
66
67config LOCKDEP_SUPPORT
68    def_bool y
69
70config HAVE_LATENCYTOP_SUPPORT
71    def_bool y
72
73source "init/Kconfig"
74
75source "kernel/Kconfig.freezer"
76
77source "arch/microblaze/platform/Kconfig.platform"
78
79menu "Processor type and features"
80
81source "kernel/time/Kconfig"
82
83source "kernel/Kconfig.preempt"
84
85source "kernel/Kconfig.hz"
86
87config MMU
88    bool "MMU support"
89    default n
90
91config NO_MMU
92    bool
93    depends on !MMU
94    default y
95
96comment "Boot options"
97
98config CMDLINE_BOOL
99    bool "Default bootloader kernel arguments"
100
101config CMDLINE
102    string "Default kernel command string"
103    depends on CMDLINE_BOOL
104    default "console=ttyUL0,115200"
105    help
106      On some architectures there is currently no way for the boot loader
107      to pass arguments to the kernel. For these architectures, you should
108      supply some command-line options at build time by entering them
109      here.
110
111config CMDLINE_FORCE
112    bool "Force default kernel command string"
113    depends on CMDLINE_BOOL
114    default n
115    help
116      Set this to have arguments from the default kernel command string
117      override those passed by the boot loader.
118
119config SECCOMP
120    bool "Enable seccomp to safely compute untrusted bytecode"
121    depends on PROC_FS
122    default y
123    help
124      This kernel feature is useful for number crunching applications
125      that may need to compute untrusted bytecode during their
126      execution. By using pipes or other transports made available to
127      the process as file descriptors supporting the read/write
128      syscalls, it's possible to isolate those applications in
129      their own address space using seccomp. Once seccomp is
130      enabled via /proc/<pid>/seccomp, it cannot be disabled
131      and the task is only allowed to execute a few safe syscalls
132      defined by each seccomp mode.
133
134      If unsure, say Y. Only embedded should say N here.
135
136endmenu
137
138menu "Advanced setup"
139
140config ADVANCED_OPTIONS
141    bool "Prompt for advanced kernel configuration options"
142    help
143      This option will enable prompting for a variety of advanced kernel
144      configuration options. These options can cause the kernel to not
145      work if they are set incorrectly, but can be used to optimize certain
146      aspects of kernel memory management.
147
148      Unless you know what you are doing, say N here.
149
150comment "Default settings for advanced configuration options are used"
151    depends on !ADVANCED_OPTIONS
152
153config XILINX_UNCACHED_SHADOW
154    bool "Are you using uncached shadow for RAM ?"
155    depends on ADVANCED_OPTIONS && !MMU
156    default n
157    help
158      This is needed to be able to allocate uncachable memory regions.
159      The feature requires the design to define the RAM memory controller
160      window to be twice as large as the actual physical memory.
161
162config HIGHMEM_START_BOOL
163    bool "Set high memory pool address"
164    depends on ADVANCED_OPTIONS && HIGHMEM
165    help
166      This option allows you to set the base address of the kernel virtual
167      area used to map high memory pages. This can be useful in
168      optimizing the layout of kernel virtual memory.
169
170      Say N here unless you know what you are doing.
171
172config HIGHMEM_START
173    hex "Virtual start address of high memory pool" if HIGHMEM_START_BOOL
174    depends on MMU
175    default "0xfe000000"
176
177config LOWMEM_SIZE_BOOL
178    bool "Set maximum low memory"
179    depends on ADVANCED_OPTIONS && MMU
180    help
181      This option allows you to set the maximum amount of memory which
182      will be used as "low memory", that is, memory which the kernel can
183      access directly, without having to set up a kernel virtual mapping.
184      This can be useful in optimizing the layout of kernel virtual
185      memory.
186
187      Say N here unless you know what you are doing.
188
189config LOWMEM_SIZE
190    hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
191    default "0x30000000"
192
193config KERNEL_START_BOOL
194    bool "Set custom kernel base address"
195    depends on ADVANCED_OPTIONS
196    help
197      This option allows you to set the kernel virtual address at which
198      the kernel will map low memory (the kernel image will be linked at
199      this address). This can be useful in optimizing the virtual memory
200      layout of the system.
201
202      Say N here unless you know what you are doing.
203
204config KERNEL_START
205    hex "Virtual address of kernel base" if KERNEL_START_BOOL
206    default "0xc0000000" if MMU
207    default KERNEL_BASE_ADDR if !MMU
208
209config TASK_SIZE_BOOL
210    bool "Set custom user task size"
211    depends on ADVANCED_OPTIONS && MMU
212    help
213      This option allows you to set the amount of virtual address space
214      allocated to user tasks. This can be useful in optimizing the
215      virtual memory layout of the system.
216
217      Say N here unless you know what you are doing.
218
219config TASK_SIZE
220    hex "Size of user task space" if TASK_SIZE_BOOL
221    default "0x80000000"
222
223choice
224    prompt "Page size"
225    default MICROBLAZE_4K_PAGES
226    depends on ADVANCED_OPTIONS && !MMU
227    help
228      Select the kernel logical page size. Increasing the page size
229      will reduce software overhead at each page boundary, allow
230      hardware prefetch mechanisms to be more effective, and allow
231      larger dma transfers increasing IO efficiency and reducing
232      overhead. However the utilization of memory will increase.
233      For example, each cached file will using a multiple of the
234      page size to hold its contents and the difference between the
235      end of file and the end of page is wasted.
236
237      If unsure, choose 4K_PAGES.
238
239config MICROBLAZE_4K_PAGES
240    bool "4k page size"
241
242config MICROBLAZE_8K_PAGES
243    bool "8k page size"
244
245config MICROBLAZE_16K_PAGES
246    bool "16k page size"
247
248config MICROBLAZE_32K_PAGES
249    bool "32k page size"
250
251endchoice
252
253endmenu
254
255source "mm/Kconfig"
256
257menu "Exectuable file formats"
258
259source "fs/Kconfig.binfmt"
260
261endmenu
262
263menu "Bus Options"
264
265config PCI
266    bool "PCI support"
267
268config PCI_DOMAINS
269    def_bool PCI
270
271config PCI_SYSCALL
272    def_bool PCI
273
274config PCI_XILINX
275    bool "Xilinx PCI host bridge support"
276    depends on PCI
277
278source "drivers/pci/Kconfig"
279
280endmenu
281
282source "net/Kconfig"
283
284source "drivers/Kconfig"
285
286source "fs/Kconfig"
287
288source "arch/microblaze/Kconfig.debug"
289
290source "security/Kconfig"
291
292source "crypto/Kconfig"
293
294source "lib/Kconfig"
295

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