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Linux/arch/microblaze/Kconfig

  1 config MICROBLAZE
  2         def_bool y
  3         select ARCH_MIGHT_HAVE_PC_PARPORT
  4         select ARCH_WANT_IPC_PARSE_VERSION
  5         select ARCH_WANT_OPTIONAL_GPIOLIB
  6         select BUILDTIME_EXTABLE_SORT
  7         select CLKSRC_OF
  8         select CLONE_BACKWARDS3
  9         select COMMON_CLK
 10         select GENERIC_ATOMIC64
 11         select GENERIC_CLOCKEVENTS
 12         select GENERIC_CPU_DEVICES
 13         select GENERIC_IDLE_POLL_SETUP
 14         select GENERIC_IRQ_PROBE
 15         select GENERIC_IRQ_SHOW
 16         select GENERIC_PCI_IOMAP
 17         select GENERIC_SCHED_CLOCK
 18         select HAVE_ARCH_KGDB
 19         select HAVE_DEBUG_KMEMLEAK
 20         select HAVE_DMA_API_DEBUG
 21         select HAVE_DMA_ATTRS
 22         select HAVE_DYNAMIC_FTRACE
 23         select HAVE_FTRACE_MCOUNT_RECORD
 24         select HAVE_FUNCTION_GRAPH_TRACER
 25         select HAVE_FUNCTION_TRACER
 26         select HAVE_MEMBLOCK
 27         select HAVE_MEMBLOCK_NODE_MAP
 28         select HAVE_OPROFILE
 29         select IRQ_DOMAIN
 30         select MODULES_USE_ELF_RELA
 31         select OF
 32         select OF_EARLY_FLATTREE
 33         select TRACING_SUPPORT
 34         select VIRT_TO_BUS
 35 
 36 config SWAP
 37         def_bool n
 38 
 39 config RWSEM_GENERIC_SPINLOCK
 40         def_bool y
 41 
 42 config ZONE_DMA
 43         def_bool y
 44 
 45 config RWSEM_XCHGADD_ALGORITHM
 46         bool
 47 
 48 config ARCH_HAS_ILOG2_U32
 49         def_bool n
 50 
 51 config ARCH_HAS_ILOG2_U64
 52         def_bool n
 53 
 54 config GENERIC_HWEIGHT
 55         def_bool y
 56 
 57 config GENERIC_CALIBRATE_DELAY
 58         def_bool y
 59 
 60 config GENERIC_CSUM
 61         def_bool y
 62 
 63 config STACKTRACE_SUPPORT
 64         def_bool y
 65 
 66 config LOCKDEP_SUPPORT
 67         def_bool y
 68 
 69 config HAVE_LATENCYTOP_SUPPORT
 70         def_bool y
 71 
 72 source "init/Kconfig"
 73 
 74 source "kernel/Kconfig.freezer"
 75 
 76 source "arch/microblaze/Kconfig.platform"
 77 
 78 menu "Processor type and features"
 79 
 80 source "kernel/Kconfig.preempt"
 81 
 82 source "kernel/Kconfig.hz"
 83 
 84 config MMU
 85         bool "MMU support"
 86         default n
 87 
 88 comment "Boot options"
 89 
 90 config CMDLINE_BOOL
 91         bool "Default bootloader kernel arguments"
 92 
 93 config CMDLINE
 94         string "Default kernel command string"
 95         depends on CMDLINE_BOOL
 96         default "console=ttyUL0,115200"
 97         help
 98           On some architectures there is currently no way for the boot loader
 99           to pass arguments to the kernel. For these architectures, you should
100           supply some command-line options at build time by entering them
101           here.
102 
103 config CMDLINE_FORCE
104         bool "Force default kernel command string"
105         depends on CMDLINE_BOOL
106         default n
107         help
108           Set this to have arguments from the default kernel command string
109           override those passed by the boot loader.
110 
111 config SECCOMP
112         bool "Enable seccomp to safely compute untrusted bytecode"
113         depends on PROC_FS
114         default y
115         help
116           This kernel feature is useful for number crunching applications
117           that may need to compute untrusted bytecode during their
118           execution. By using pipes or other transports made available to
119           the process as file descriptors supporting the read/write
120           syscalls, it's possible to isolate those applications in
121           their own address space using seccomp. Once seccomp is
122           enabled via /proc/<pid>/seccomp, it cannot be disabled
123           and the task is only allowed to execute a few safe syscalls
124           defined by each seccomp mode.
125 
126           If unsure, say Y. Only embedded should say N here.
127 
128 endmenu
129 
130 menu "Kernel features"
131 
132 config NR_CPUS
133         int
134         default "1"
135 
136 config ADVANCED_OPTIONS
137         bool "Prompt for advanced kernel configuration options"
138         help
139           This option will enable prompting for a variety of advanced kernel
140           configuration options.  These options can cause the kernel to not
141           work if they are set incorrectly, but can be used to optimize certain
142           aspects of kernel memory management.
143 
144           Unless you know what you are doing, say N here.
145 
146 comment "Default settings for advanced configuration options are used"
147         depends on !ADVANCED_OPTIONS
148 
149 config XILINX_UNCACHED_SHADOW
150         bool "Are you using uncached shadow for RAM ?"
151         depends on ADVANCED_OPTIONS && !MMU
152         default n
153         help
154           This is needed to be able to allocate uncachable memory regions.
155           The feature requires the design to define the RAM memory controller
156           window to be twice as large as the actual physical memory.
157 
158 config HIGHMEM
159         bool "High memory support"
160         depends on MMU
161         help
162           The address space of Microblaze processors is only 4 Gigabytes large
163           and it has to accommodate user address space, kernel address
164           space as well as some memory mapped IO. That means that, if you
165           have a large amount of physical memory and/or IO, not all of the
166           memory can be "permanently mapped" by the kernel. The physical
167           memory that is not permanently mapped is called "high memory".
168 
169           If unsure, say n.
170 
171 config LOWMEM_SIZE_BOOL
172         bool "Set maximum low memory"
173         depends on ADVANCED_OPTIONS && MMU
174         help
175           This option allows you to set the maximum amount of memory which
176           will be used as "low memory", that is, memory which the kernel can
177           access directly, without having to set up a kernel virtual mapping.
178           This can be useful in optimizing the layout of kernel virtual
179           memory.
180 
181           Say N here unless you know what you are doing.
182 
183 config LOWMEM_SIZE
184         hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
185         default "0x30000000"
186 
187 config MANUAL_RESET_VECTOR
188         hex "Microblaze reset vector address setup"
189         default "0x0"
190         help
191           Set this option to have the kernel override the CPU Reset vector.
192           If zero, no change will be made to the MicroBlaze reset vector at
193           address 0x0.
194           If non-zero, a jump instruction to this address, will be written
195           to the reset vector at address 0x0.
196           If you are unsure, set it to default value 0x0.
197 
198 config KERNEL_START_BOOL
199         bool "Set custom kernel base address"
200         depends on ADVANCED_OPTIONS
201         help
202           This option allows you to set the kernel virtual address at which
203           the kernel will map low memory (the kernel image will be linked at
204           this address).  This can be useful in optimizing the virtual memory
205           layout of the system.
206 
207           Say N here unless you know what you are doing.
208 
209 config KERNEL_START
210         hex "Virtual address of kernel base" if KERNEL_START_BOOL
211         default "0xc0000000" if MMU
212         default KERNEL_BASE_ADDR if !MMU
213 
214 config TASK_SIZE_BOOL
215         bool "Set custom user task size"
216         depends on ADVANCED_OPTIONS && MMU
217         help
218           This option allows you to set the amount of virtual address space
219           allocated to user tasks.  This can be useful in optimizing the
220           virtual memory layout of the system.
221 
222           Say N here unless you know what you are doing.
223 
224 config TASK_SIZE
225         hex "Size of user task space" if TASK_SIZE_BOOL
226         default "0x80000000"
227 
228 choice
229         prompt "Page size"
230         default MICROBLAZE_4K_PAGES
231         depends on ADVANCED_OPTIONS && !MMU
232         help
233           Select the kernel logical page size. Increasing the page size
234           will reduce software overhead at each page boundary, allow
235           hardware prefetch mechanisms to be more effective, and allow
236           larger dma transfers increasing IO efficiency and reducing
237           overhead. However the utilization of memory will increase.
238           For example, each cached file will using a multiple of the
239           page size to hold its contents and the difference between the
240           end of file and the end of page is wasted.
241 
242           If unsure, choose 4K_PAGES.
243 
244 config MICROBLAZE_4K_PAGES
245         bool "4k page size"
246 
247 config MICROBLAZE_16K_PAGES
248         bool "16k page size"
249 
250 config MICROBLAZE_64K_PAGES
251         bool "64k page size"
252 
253 endchoice
254 
255 source "mm/Kconfig"
256 
257 endmenu
258 
259 menu "Executable file formats"
260 
261 source "fs/Kconfig.binfmt"
262 
263 endmenu
264 
265 menu "Bus Options"
266 
267 config PCI
268         bool "PCI support"
269 
270 config PCI_DOMAINS
271         def_bool PCI
272 
273 config PCI_SYSCALL
274         def_bool PCI
275 
276 config PCI_XILINX
277         bool "Xilinx PCI host bridge support"
278         depends on PCI
279 
280 source "drivers/pci/Kconfig"
281 
282 endmenu
283 
284 source "net/Kconfig"
285 
286 source "drivers/Kconfig"
287 
288 source "fs/Kconfig"
289 
290 source "arch/microblaze/Kconfig.debug"
291 
292 source "security/Kconfig"
293 
294 source "crypto/Kconfig"
295 
296 source "lib/Kconfig"

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