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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 ADVANCED_OPTIONS
133         bool "Prompt for advanced kernel configuration options"
134         help
135           This option will enable prompting for a variety of advanced kernel
136           configuration options.  These options can cause the kernel to not
137           work if they are set incorrectly, but can be used to optimize certain
138           aspects of kernel memory management.
139 
140           Unless you know what you are doing, say N here.
141 
142 comment "Default settings for advanced configuration options are used"
143         depends on !ADVANCED_OPTIONS
144 
145 config XILINX_UNCACHED_SHADOW
146         bool "Are you using uncached shadow for RAM ?"
147         depends on ADVANCED_OPTIONS && !MMU
148         default n
149         help
150           This is needed to be able to allocate uncachable memory regions.
151           The feature requires the design to define the RAM memory controller
152           window to be twice as large as the actual physical memory.
153 
154 config HIGHMEM
155         bool "High memory support"
156         depends on MMU
157         help
158           The address space of Microblaze processors is only 4 Gigabytes large
159           and it has to accommodate user address space, kernel address
160           space as well as some memory mapped IO. That means that, if you
161           have a large amount of physical memory and/or IO, not all of the
162           memory can be "permanently mapped" by the kernel. The physical
163           memory that is not permanently mapped is called "high memory".
164 
165           If unsure, say n.
166 
167 config LOWMEM_SIZE_BOOL
168         bool "Set maximum low memory"
169         depends on ADVANCED_OPTIONS && MMU
170         help
171           This option allows you to set the maximum amount of memory which
172           will be used as "low memory", that is, memory which the kernel can
173           access directly, without having to set up a kernel virtual mapping.
174           This can be useful in optimizing the layout of kernel virtual
175           memory.
176 
177           Say N here unless you know what you are doing.
178 
179 config LOWMEM_SIZE
180         hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
181         default "0x30000000"
182 
183 config MANUAL_RESET_VECTOR
184         hex "Microblaze reset vector address setup"
185         default "0x0"
186         help
187           Set this option to have the kernel override the CPU Reset vector.
188           If zero, no change will be made to the MicroBlaze reset vector at
189           address 0x0.
190           If non-zero, a jump instruction to this address, will be written
191           to the reset vector at address 0x0.
192           If you are unsure, set it to default value 0x0.
193 
194 config KERNEL_START_BOOL
195         bool "Set custom kernel base address"
196         depends on ADVANCED_OPTIONS
197         help
198           This option allows you to set the kernel virtual address at which
199           the kernel will map low memory (the kernel image will be linked at
200           this address).  This can be useful in optimizing the virtual memory
201           layout of the system.
202 
203           Say N here unless you know what you are doing.
204 
205 config KERNEL_START
206         hex "Virtual address of kernel base" if KERNEL_START_BOOL
207         default "0xc0000000" if MMU
208         default KERNEL_BASE_ADDR if !MMU
209 
210 config TASK_SIZE_BOOL
211         bool "Set custom user task size"
212         depends on ADVANCED_OPTIONS && MMU
213         help
214           This option allows you to set the amount of virtual address space
215           allocated to user tasks.  This can be useful in optimizing the
216           virtual memory layout of the system.
217 
218           Say N here unless you know what you are doing.
219 
220 config TASK_SIZE
221         hex "Size of user task space" if TASK_SIZE_BOOL
222         default "0x80000000"
223 
224 choice
225         prompt "Page size"
226         default MICROBLAZE_4K_PAGES
227         depends on ADVANCED_OPTIONS && !MMU
228         help
229           Select the kernel logical page size. Increasing the page size
230           will reduce software overhead at each page boundary, allow
231           hardware prefetch mechanisms to be more effective, and allow
232           larger dma transfers increasing IO efficiency and reducing
233           overhead. However the utilization of memory will increase.
234           For example, each cached file will using a multiple of the
235           page size to hold its contents and the difference between the
236           end of file and the end of page is wasted.
237 
238           If unsure, choose 4K_PAGES.
239 
240 config MICROBLAZE_4K_PAGES
241         bool "4k page size"
242 
243 config MICROBLAZE_16K_PAGES
244         bool "16k page size"
245 
246 config MICROBLAZE_64K_PAGES
247         bool "64k page size"
248 
249 endchoice
250 
251 source "mm/Kconfig"
252 
253 endmenu
254 
255 menu "Executable file formats"
256 
257 source "fs/Kconfig.binfmt"
258 
259 endmenu
260 
261 menu "Bus Options"
262 
263 config PCI
264         bool "PCI support"
265 
266 config PCI_DOMAINS
267         def_bool PCI
268 
269 config PCI_SYSCALL
270         def_bool PCI
271 
272 config PCI_XILINX
273         bool "Xilinx PCI host bridge support"
274         depends on PCI
275 
276 source "drivers/pci/Kconfig"
277 
278 endmenu
279 
280 source "net/Kconfig"
281 
282 source "drivers/Kconfig"
283 
284 source "fs/Kconfig"
285 
286 source "arch/microblaze/Kconfig.debug"
287 
288 source "security/Kconfig"
289 
290 source "crypto/Kconfig"
291 
292 source "lib/Kconfig"

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