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Linux/arch/frv/Kconfig

  1 config FRV
  2         bool
  3         default y
  4         select HAVE_IDE
  5         select HAVE_ARCH_TRACEHOOK
  6         select HAVE_PERF_EVENTS
  7         select HAVE_UID16
  8         select VIRT_TO_BUS
  9         select GENERIC_IRQ_SHOW
 10         select HAVE_DEBUG_BUGVERBOSE
 11         select ARCH_HAVE_NMI_SAFE_CMPXCHG
 12         select GENERIC_CPU_DEVICES
 13         select ARCH_WANT_IPC_PARSE_VERSION
 14         select OLD_SIGSUSPEND3
 15         select OLD_SIGACTION
 16         select HAVE_DEBUG_STACKOVERFLOW
 17 
 18 config ZONE_DMA
 19         bool
 20         default y
 21 
 22 config RWSEM_GENERIC_SPINLOCK
 23         bool
 24         default y
 25 
 26 config RWSEM_XCHGADD_ALGORITHM
 27         bool
 28 
 29 config GENERIC_HWEIGHT
 30         bool
 31         default y
 32 
 33 config GENERIC_CALIBRATE_DELAY
 34         bool
 35         default n
 36 
 37 config TIME_LOW_RES
 38         bool
 39         default y
 40 
 41 config QUICKLIST
 42         bool
 43         default y
 44 
 45 config ARCH_HAS_ILOG2_U32
 46         bool
 47         default y
 48 
 49 config ARCH_HAS_ILOG2_U64
 50         bool
 51         default y
 52 
 53 config HZ
 54         int
 55         default 1000
 56 
 57 source "init/Kconfig"
 58 
 59 source "kernel/Kconfig.freezer"
 60 
 61 
 62 menu "Fujitsu FR-V system setup"
 63 
 64 config MMU
 65         bool "MMU support"
 66         help
 67           This options switches on and off support for the FR-V MMU
 68           (effectively switching between vmlinux and uClinux). Not all FR-V
 69           CPUs support this. Currently only the FR451 has a sufficiently
 70           featured MMU.
 71 
 72 config FRV_OUTOFLINE_ATOMIC_OPS
 73         bool "Out-of-line the FRV atomic operations"
 74         default n
 75         help
 76           Setting this option causes the FR-V atomic operations to be mostly
 77           implemented out-of-line.
 78 
 79           See Documentation/frv/atomic-ops.txt for more information.
 80 
 81 config HIGHMEM
 82         bool "High memory support"
 83         depends on MMU
 84         default y
 85         help
 86           If you wish to use more than 256MB of memory with your MMU based
 87           system, you will need to select this option. The kernel can only see
 88           the memory between 0xC0000000 and 0xD0000000 directly... everything
 89           else must be kmapped.
 90 
 91           The arch is, however, capable of supporting up to 3GB of SDRAM.
 92 
 93 config HIGHPTE
 94         bool "Allocate page tables in highmem"
 95         depends on HIGHMEM
 96         default y
 97         help
 98           The VM uses one page of memory for each page table.  For systems
 99           with a lot of RAM, this can be wasteful of precious low memory.
100           Setting this option will put user-space page tables in high memory.
101 
102 source "mm/Kconfig"
103 
104 choice
105         prompt "uClinux kernel load address"
106         depends on !MMU
107         default UCPAGE_OFFSET_C0000000
108         help
109           This option sets the base address for the uClinux kernel. The kernel
110           will rearrange the SDRAM layout to start at this address, and move
111           itself to start there. It must be greater than 0, and it must be
112           sufficiently less than 0xE0000000 that the SDRAM does not intersect
113           the I/O region.
114 
115           The base address must also be aligned such that the SDRAM controller
116           can decode it. For instance, a 512MB SDRAM bank must be 512MB aligned.
117 
118 config UCPAGE_OFFSET_20000000
119        bool "0x20000000"
120 
121 config UCPAGE_OFFSET_40000000
122        bool "0x40000000"
123 
124 config UCPAGE_OFFSET_60000000
125        bool "0x60000000"
126 
127 config UCPAGE_OFFSET_80000000
128        bool "0x80000000"
129 
130 config UCPAGE_OFFSET_A0000000
131        bool "0xA0000000"
132 
133 config UCPAGE_OFFSET_C0000000
134        bool "0xC0000000 (Recommended)"
135 
136 endchoice
137 
138 config PAGE_OFFSET
139         hex
140         default 0x20000000 if UCPAGE_OFFSET_20000000
141         default 0x40000000 if UCPAGE_OFFSET_40000000
142         default 0x60000000 if UCPAGE_OFFSET_60000000
143         default 0x80000000 if UCPAGE_OFFSET_80000000
144         default 0xA0000000 if UCPAGE_OFFSET_A0000000
145         default 0xC0000000
146 
147 config PROTECT_KERNEL
148         bool "Protect core kernel against userspace"
149         depends on !MMU
150         default y
151         help
152           Selecting this option causes the uClinux kernel to change the
153           permittivity of DAMPR register covering the core kernel image to
154           prevent userspace accessing the underlying memory directly.
155 
156 choice
157         prompt "CPU Caching mode"
158         default FRV_DEFL_CACHE_WBACK
159         help
160           This option determines the default caching mode for the kernel.
161 
162           Write-Back caching mode involves the all reads and writes causing
163           the affected cacheline to be read into the cache first before being
164           operated upon. Memory is not then updated by a write until the cache
165           is filled and a cacheline needs to be displaced from the cache to
166           make room. Only at that point is it written back.
167 
168           Write-Behind caching is similar to Write-Back caching, except that a
169           write won't fetch a cacheline into the cache if there isn't already
170           one there; it will write directly to memory instead.
171 
172           Write-Through caching only fetches cachelines from memory on a
173           read. Writes always get written directly to memory. If the affected
174           cacheline is also in cache, it will be updated too.
175 
176           The final option is to turn of caching entirely.
177 
178           Note that not all CPUs support Write-Behind caching. If the CPU on
179           which the kernel is running doesn't, it'll fall back to Write-Back
180           caching.
181 
182 config FRV_DEFL_CACHE_WBACK
183         bool "Write-Back"
184 
185 config FRV_DEFL_CACHE_WBEHIND
186         bool "Write-Behind"
187 
188 config FRV_DEFL_CACHE_WTHRU
189         bool "Write-Through"
190 
191 config FRV_DEFL_CACHE_DISABLED
192         bool "Disabled"
193 
194 endchoice
195 
196 menu "CPU core support"
197 
198 config CPU_FR401
199         bool "Include FR401 core support"
200         depends on !MMU
201         default y
202         help
203           This enables support for the FR401, FR401A and FR403 CPUs
204 
205 config CPU_FR405
206         bool "Include FR405 core support"
207         depends on !MMU
208         default y
209         help
210           This enables support for the FR405 CPU
211 
212 config CPU_FR451
213         bool "Include FR451 core support"
214         default y
215         help
216           This enables support for the FR451 CPU
217 
218 config CPU_FR451_COMPILE
219         bool "Specifically compile for FR451 core"
220         depends on CPU_FR451 && !CPU_FR401 && !CPU_FR405 && !CPU_FR551
221         default y
222         help
223           This causes appropriate flags to be passed to the compiler to
224           optimise for the FR451 CPU
225 
226 config CPU_FR551
227         bool "Include FR551 core support"
228         depends on !MMU
229         default y
230         help
231           This enables support for the FR555 CPU
232 
233 config CPU_FR551_COMPILE
234         bool "Specifically compile for FR551 core"
235         depends on CPU_FR551 && !CPU_FR401 && !CPU_FR405 && !CPU_FR451
236         default y
237         help
238           This causes appropriate flags to be passed to the compiler to
239           optimise for the FR555 CPU
240 
241 config FRV_L1_CACHE_SHIFT
242         int
243         default "5" if CPU_FR401 || CPU_FR405 || CPU_FR451
244         default "6" if CPU_FR551
245 
246 endmenu
247 
248 choice
249         prompt "System support"
250         default MB93091_VDK
251 
252 config MB93091_VDK
253         bool "MB93091 CPU board with or without motherboard"
254 
255 config MB93093_PDK
256         bool "MB93093 PDK unit"
257 
258 endchoice
259 
260 if MB93091_VDK
261 choice
262         prompt "Motherboard support"
263         default MB93090_MB00
264 
265 config MB93090_MB00
266         bool "Use the MB93090-MB00 motherboard"
267         help
268           Select this option if the MB93091 CPU board is going to be used with
269           a MB93090-MB00 VDK motherboard
270 
271 config MB93091_NO_MB
272         bool "Use standalone"
273         help
274           Select this option if the MB93091 CPU board is going to be used
275           without a motherboard
276 
277 endchoice
278 endif
279 
280 config FUJITSU_MB93493
281         bool "MB93493 Multimedia chip"
282         help
283           Select this option if the MB93493 multimedia chip is going to be
284           used.
285 
286 choice
287         prompt "GP-Relative data support"
288         default GPREL_DATA_8
289         help
290           This option controls what data, if any, should be placed in the GP
291           relative data sections. Using this means that the compiler can
292           generate accesses to the data using GR16-relative addressing which
293           is faster than absolute instructions and saves space (2 instructions
294           per access).
295 
296           However, the GPREL region is limited in size because the immediate
297           value used in the load and store instructions is limited to a 12-bit
298           signed number.
299 
300           So if the linker starts complaining that accesses to GPREL data are
301           out of range, try changing this option from the default.
302 
303           Note that modules will always be compiled with this feature disabled
304           as the module data will not be in range of the GP base address.
305 
306 config GPREL_DATA_8
307         bool "Put data objects of up to 8 bytes into GP-REL"
308 
309 config GPREL_DATA_4
310         bool "Put data objects of up to 4 bytes into GP-REL"
311 
312 config GPREL_DATA_NONE
313         bool "Don't use GP-REL"
314 
315 endchoice
316 
317 config FRV_ONCPU_SERIAL
318         bool "Use on-CPU serial ports"
319         select SERIAL_8250
320         default y
321 
322 config PCI
323         bool "Use PCI"
324         depends on MB93090_MB00
325         default y
326         select GENERIC_PCI_IOMAP
327         help
328           Some FR-V systems (such as the MB93090-MB00 VDK) have PCI
329           onboard. If you have one of these boards and you wish to use the PCI
330           facilities, say Y here.
331 
332 config RESERVE_DMA_COHERENT
333         bool "Reserve DMA coherent memory"
334         depends on PCI && !MMU
335         default y
336         help
337           Many PCI drivers require access to uncached memory for DMA device
338           communications (such as is done with some Ethernet buffer rings). If
339           a fully featured MMU is available, this can be done through page
340           table settings, but if not, a region has to be set aside and marked
341           with a special DAMPR register.
342 
343           Setting this option causes uClinux to set aside a portion of the
344           available memory for use in this manner. The memory will then be
345           unavailable for normal kernel use.
346 
347 source "drivers/pci/Kconfig"
348 
349 source "drivers/pcmcia/Kconfig"
350 
351 menu "Power management options"
352 
353 config ARCH_SUSPEND_POSSIBLE
354         def_bool y
355 
356 source kernel/power/Kconfig
357 endmenu
358 
359 endmenu
360 
361 
362 menu "Executable formats"
363 
364 source "fs/Kconfig.binfmt"
365 
366 endmenu
367 
368 source "net/Kconfig"
369 
370 source "drivers/Kconfig"
371 
372 source "fs/Kconfig"
373 
374 source "arch/frv/Kconfig.debug"
375 
376 source "security/Kconfig"
377 
378 source "crypto/Kconfig"
379 
380 source "lib/Kconfig"

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