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

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