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