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Linux/arch/microblaze/Kconfig

  1 config MICROBLAZE
  2         def_bool y
  3         select ARCH_HAS_GCOV_PROFILE_ALL
  4         select ARCH_MIGHT_HAVE_PC_PARPORT
  5         select ARCH_WANT_IPC_PARSE_VERSION
  6         select ARCH_WANT_OPTIONAL_GPIOLIB
  7         select BUILDTIME_EXTABLE_SORT
  8         select CLKSRC_OF
  9         select CLONE_BACKWARDS3
 10         select COMMON_CLK
 11         select GENERIC_ATOMIC64
 12         select GENERIC_CLOCKEVENTS
 13         select GENERIC_CPU_DEVICES
 14         select GENERIC_IDLE_POLL_SETUP
 15         select GENERIC_IRQ_PROBE
 16         select GENERIC_IRQ_SHOW
 17         select GENERIC_PCI_IOMAP
 18         select GENERIC_SCHED_CLOCK
 19         select HAVE_ARCH_HASH
 20         select HAVE_ARCH_KGDB
 21         select HAVE_DEBUG_KMEMLEAK
 22         select HAVE_DMA_API_DEBUG
 23         select HAVE_DYNAMIC_FTRACE
 24         select HAVE_FTRACE_MCOUNT_RECORD
 25         select HAVE_FUNCTION_GRAPH_TRACER
 26         select HAVE_FUNCTION_TRACER
 27         select HAVE_MEMBLOCK
 28         select HAVE_MEMBLOCK_NODE_MAP
 29         select HAVE_OPROFILE
 30         select IRQ_DOMAIN
 31         select MODULES_USE_ELF_RELA
 32         select OF
 33         select OF_EARLY_FLATTREE
 34         select TRACING_SUPPORT
 35         select VIRT_TO_BUS
 36         select CPU_NO_EFFICIENT_FFS
 37 
 38 config SWAP
 39         def_bool n
 40 
 41 config RWSEM_GENERIC_SPINLOCK
 42         def_bool y
 43 
 44 config ZONE_DMA
 45         def_bool y
 46 
 47 config RWSEM_XCHGADD_ALGORITHM
 48         bool
 49 
 50 config ARCH_HAS_ILOG2_U32
 51         def_bool n
 52 
 53 config ARCH_HAS_ILOG2_U64
 54         def_bool n
 55 
 56 config GENERIC_HWEIGHT
 57         def_bool y
 58 
 59 config GENERIC_CALIBRATE_DELAY
 60         def_bool y
 61 
 62 config GENERIC_CSUM
 63         def_bool y
 64 
 65 config STACKTRACE_SUPPORT
 66         def_bool y
 67 
 68 config LOCKDEP_SUPPORT
 69         def_bool y
 70 
 71 source "init/Kconfig"
 72 
 73 source "kernel/Kconfig.freezer"
 74 
 75 source "arch/microblaze/Kconfig.platform"
 76 
 77 menu "Processor type and features"
 78 
 79 source "kernel/Kconfig.preempt"
 80 
 81 source "kernel/Kconfig.hz"
 82 
 83 config MMU
 84         bool "MMU support"
 85         default n
 86 
 87 comment "Boot options"
 88 
 89 config CMDLINE_BOOL
 90         bool "Default bootloader kernel arguments"
 91 
 92 config CMDLINE
 93         string "Default kernel command string"
 94         depends on CMDLINE_BOOL
 95         default "console=ttyUL0,115200"
 96         help
 97           On some architectures there is currently no way for the boot loader
 98           to pass arguments to the kernel. For these architectures, you should
 99           supply some command-line options at build time by entering them
100           here.
101 
102 config CMDLINE_FORCE
103         bool "Force default kernel command string"
104         depends on CMDLINE_BOOL
105         default n
106         help
107           Set this to have arguments from the default kernel command string
108           override those passed by the boot loader.
109 
110 config SECCOMP
111         bool "Enable seccomp to safely compute untrusted bytecode"
112         depends on PROC_FS
113         default y
114         help
115           This kernel feature is useful for number crunching applications
116           that may need to compute untrusted bytecode during their
117           execution. By using pipes or other transports made available to
118           the process as file descriptors supporting the read/write
119           syscalls, it's possible to isolate those applications in
120           their own address space using seccomp. Once seccomp is
121           enabled via /proc/<pid>/seccomp, it cannot be disabled
122           and the task is only allowed to execute a few safe syscalls
123           defined by each seccomp mode.
124 
125           If unsure, say Y. Only embedded should say N here.
126 
127 endmenu
128 
129 menu "Kernel features"
130 
131 config NR_CPUS
132         int
133         default "1"
134 
135 config ADVANCED_OPTIONS
136         bool "Prompt for advanced kernel configuration options"
137         help
138           This option will enable prompting for a variety of advanced kernel
139           configuration options.  These options can cause the kernel to not
140           work if they are set incorrectly, but can be used to optimize certain
141           aspects of kernel memory management.
142 
143           Unless you know what you are doing, say N here.
144 
145 comment "Default settings for advanced configuration options are used"
146         depends on !ADVANCED_OPTIONS
147 
148 config XILINX_UNCACHED_SHADOW
149         bool "Are you using uncached shadow for RAM ?"
150         depends on ADVANCED_OPTIONS && !MMU
151         default n
152         help
153           This is needed to be able to allocate uncachable memory regions.
154           The feature requires the design to define the RAM memory controller
155           window to be twice as large as the actual physical memory.
156 
157 config HIGHMEM
158         bool "High memory support"
159         depends on MMU
160         help
161           The address space of Microblaze processors is only 4 Gigabytes large
162           and it has to accommodate user address space, kernel address
163           space as well as some memory mapped IO. That means that, if you
164           have a large amount of physical memory and/or IO, not all of the
165           memory can be "permanently mapped" by the kernel. The physical
166           memory that is not permanently mapped is called "high memory".
167 
168           If unsure, say n.
169 
170 config LOWMEM_SIZE_BOOL
171         bool "Set maximum low memory"
172         depends on ADVANCED_OPTIONS && MMU
173         help
174           This option allows you to set the maximum amount of memory which
175           will be used as "low memory", that is, memory which the kernel can
176           access directly, without having to set up a kernel virtual mapping.
177           This can be useful in optimizing the layout of kernel virtual
178           memory.
179 
180           Say N here unless you know what you are doing.
181 
182 config LOWMEM_SIZE
183         hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
184         default "0x30000000"
185 
186 config MANUAL_RESET_VECTOR
187         hex "Microblaze reset vector address setup"
188         default "0x0"
189         help
190           Set this option to have the kernel override the CPU Reset vector.
191           If zero, no change will be made to the MicroBlaze reset vector at
192           address 0x0.
193           If non-zero, a jump instruction to this address, will be written
194           to the reset vector at address 0x0.
195           If you are unsure, set it to default value 0x0.
196 
197 config KERNEL_START_BOOL
198         bool "Set custom kernel base address"
199         depends on ADVANCED_OPTIONS
200         help
201           This option allows you to set the kernel virtual address at which
202           the kernel will map low memory (the kernel image will be linked at
203           this address).  This can be useful in optimizing the virtual memory
204           layout of the system.
205 
206           Say N here unless you know what you are doing.
207 
208 config KERNEL_START
209         hex "Virtual address of kernel base" if KERNEL_START_BOOL
210         default "0xc0000000" if MMU
211         default KERNEL_BASE_ADDR if !MMU
212 
213 config TASK_SIZE_BOOL
214         bool "Set custom user task size"
215         depends on ADVANCED_OPTIONS && MMU
216         help
217           This option allows you to set the amount of virtual address space
218           allocated to user tasks.  This can be useful in optimizing the
219           virtual memory layout of the system.
220 
221           Say N here unless you know what you are doing.
222 
223 config TASK_SIZE
224         hex "Size of user task space" if TASK_SIZE_BOOL
225         default "0x80000000"
226 
227 choice
228         prompt "Page size"
229         default MICROBLAZE_4K_PAGES
230         depends on ADVANCED_OPTIONS && !MMU
231         help
232           Select the kernel logical page size. Increasing the page size
233           will reduce software overhead at each page boundary, allow
234           hardware prefetch mechanisms to be more effective, and allow
235           larger dma transfers increasing IO efficiency and reducing
236           overhead. However the utilization of memory will increase.
237           For example, each cached file will using a multiple of the
238           page size to hold its contents and the difference between the
239           end of file and the end of page is wasted.
240 
241           If unsure, choose 4K_PAGES.
242 
243 config MICROBLAZE_4K_PAGES
244         bool "4k page size"
245 
246 config MICROBLAZE_16K_PAGES
247         bool "16k page size"
248 
249 config MICROBLAZE_64K_PAGES
250         bool "64k page size"
251 
252 endchoice
253 
254 source "mm/Kconfig"
255 
256 endmenu
257 
258 menu "Executable file formats"
259 
260 source "fs/Kconfig.binfmt"
261 
262 endmenu
263 
264 menu "Bus Options"
265 
266 config PCI
267         bool "PCI support"
268 
269 config PCI_DOMAINS
270         def_bool PCI
271 
272 config PCI_DOMAINS_GENERIC
273         def_bool PCI_DOMAINS
274 
275 config PCI_SYSCALL
276         def_bool PCI
277 
278 config PCI_XILINX
279         bool "Xilinx PCI host bridge support"
280         depends on PCI
281 
282 source "drivers/pci/Kconfig"
283 
284 endmenu
285 
286 source "net/Kconfig"
287 
288 source "drivers/Kconfig"
289 
290 source "fs/Kconfig"
291 
292 source "arch/microblaze/Kconfig.debug"
293 
294 source "security/Kconfig"
295 
296 source "crypto/Kconfig"
297 
298 source "lib/Kconfig"

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