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Linus Torvalds1da177e2005-04-16 15:20:36 -07001#
2# For a description of the syntax of this configuration file,
3# see Documentation/kbuild/kconfig-language.txt.
4#
5config FRV
6 bool
7 default y
8
Christoph Lameter66701b12007-02-10 01:43:09 -08009config ZONE_DMA
10 bool
11 default y
12
Linus Torvalds1da177e2005-04-16 15:20:36 -070013config RWSEM_GENERIC_SPINLOCK
14 bool
15 default y
16
17config RWSEM_XCHGADD_ALGORITHM
18 bool
19
20config GENERIC_FIND_NEXT_BIT
21 bool
22 default y
23
Akinobu Mita1f6d7a92006-03-26 01:39:22 -080024config GENERIC_HWEIGHT
25 bool
26 default y
27
Linus Torvalds1da177e2005-04-16 15:20:36 -070028config GENERIC_CALIBRATE_DELAY
29 bool
30 default n
31
32config GENERIC_HARDIRQS
33 bool
David Howells1bcbba32006-09-25 23:32:04 -070034 default y
Linus Torvalds1da177e2005-04-16 15:20:36 -070035
David Howellsaf8c65b2006-09-25 23:32:07 -070036config GENERIC_HARDIRQS_NO__DO_IRQ
37 bool
38 default y
39
john stultzebd6c172006-09-06 11:02:45 +010040config GENERIC_TIME
41 bool
42 default y
43
Ingo Molnar06027bd2006-02-14 13:53:15 -080044config TIME_LOW_RES
45 bool
46 default y
47
David Howellsf0d1b0b2006-12-08 02:37:49 -080048config ARCH_HAS_ILOG2_U32
49 bool
50 default y
51
52config ARCH_HAS_ILOG2_U64
53 bool
54 default y
55
Linus Torvalds1da177e2005-04-16 15:20:36 -070056mainmenu "Fujitsu FR-V Kernel Configuration"
57
58source "init/Kconfig"
59
60
61menu "Fujitsu FR-V system setup"
62
63config MMU
64 bool "MMU support"
65 help
66 This options switches on and off support for the FR-V MMU
67 (effectively switching between vmlinux and uClinux). Not all FR-V
68 CPUs support this. Currently only the FR451 has a sufficiently
69 featured MMU.
70
71config FRV_OUTOFLINE_ATOMIC_OPS
72 bool "Out-of-line the FRV atomic operations"
73 default n
74 help
75 Setting this option causes the FR-V atomic operations to be mostly
76 implemented out-of-line.
77
78 See Documentation/fujitsu/frv/atomic-ops.txt for more information.
79
80config HIGHMEM
81 bool "High memory support"
82 depends on MMU
83 default y
84 help
85 If you wish to use more than 256MB of memory with your MMU based
86 system, you will need to select this option. The kernel can only see
87 the memory between 0xC0000000 and 0xD0000000 directly... everything
88 else must be kmapped.
89
90 The arch is, however, capable of supporting up to 3GB of SDRAM.
91
92config HIGHPTE
93 bool "Allocate page tables in highmem"
94 depends on HIGHMEM
95 default y
96 help
97 The VM uses one page of memory for each page table. For systems
98 with a lot of RAM, this can be wasteful of precious low memory.
99 Setting this option will put user-space page tables in high memory.
100
David Howells339b0c02006-10-03 01:13:47 -0700101config LARGE_ALLOCS
102 bool "Allow allocating large blocks (> 1MB) of memory"
103 help
104 Allow the slab memory allocator to keep chains for very large memory
105 sizes - up to 32MB. You may need this if your system has a lot of
106 RAM, and you need to able to allocate very large contiguous chunks.
107 If unsure, say N.
108
Dave Hansen3f22ab22005-06-23 00:07:43 -0700109source "mm/Kconfig"
110
Linus Torvalds1da177e2005-04-16 15:20:36 -0700111choice
112 prompt "uClinux kernel load address"
113 depends on !MMU
114 default UCPAGE_OFFSET_C0000000
115 help
116 This option sets the base address for the uClinux kernel. The kernel
117 will rearrange the SDRAM layout to start at this address, and move
118 itself to start there. It must be greater than 0, and it must be
119 sufficiently less than 0xE0000000 that the SDRAM does not intersect
120 the I/O region.
121
122 The base address must also be aligned such that the SDRAM controller
123 can decode it. For instance, a 512MB SDRAM bank must be 512MB aligned.
124
125config UCPAGE_OFFSET_20000000
126 bool "0x20000000"
127
128config UCPAGE_OFFSET_40000000
129 bool "0x40000000"
130
131config UCPAGE_OFFSET_60000000
132 bool "0x60000000"
133
134config UCPAGE_OFFSET_80000000
135 bool "0x80000000"
136
137config UCPAGE_OFFSET_A0000000
138 bool "0xA0000000"
139
140config UCPAGE_OFFSET_C0000000
141 bool "0xC0000000 (Recommended)"
142
143endchoice
144
145config PROTECT_KERNEL
146 bool "Protect core kernel against userspace"
147 depends on !MMU
148 default y
149 help
150 Selecting this option causes the uClinux kernel to change the
151 permittivity of DAMPR register covering the core kernel image to
152 prevent userspace accessing the underlying memory directly.
153
154choice
155 prompt "CPU Caching mode"
156 default FRV_DEFL_CACHE_WBACK
157 help
158 This option determines the default caching mode for the kernel.
159
160 Write-Back caching mode involves the all reads and writes causing
161 the affected cacheline to be read into the cache first before being
162 operated upon. Memory is not then updated by a write until the cache
163 is filled and a cacheline needs to be displaced from the cache to
164 make room. Only at that point is it written back.
165
166 Write-Behind caching is similar to Write-Back caching, except that a
167 write won't fetch a cacheline into the cache if there isn't already
168 one there; it will write directly to memory instead.
169
170 Write-Through caching only fetches cachelines from memory on a
171 read. Writes always get written directly to memory. If the affected
172 cacheline is also in cache, it will be updated too.
173
174 The final option is to turn of caching entirely.
175
176 Note that not all CPUs support Write-Behind caching. If the CPU on
177 which the kernel is running doesn't, it'll fall back to Write-Back
178 caching.
179
180config FRV_DEFL_CACHE_WBACK
181 bool "Write-Back"
182
183config FRV_DEFL_CACHE_WBEHIND
184 bool "Write-Behind"
185
186config FRV_DEFL_CACHE_WTHRU
187 bool "Write-Through"
188
189config FRV_DEFL_CACHE_DISABLED
190 bool "Disabled"
191
192endchoice
193
194menu "CPU core support"
195
196config CPU_FR401
197 bool "Include FR401 core support"
198 depends on !MMU
199 default y
200 help
201 This enables support for the FR401, FR401A and FR403 CPUs
202
203config CPU_FR405
204 bool "Include FR405 core support"
205 depends on !MMU
206 default y
207 help
208 This enables support for the FR405 CPU
209
210config CPU_FR451
211 bool "Include FR451 core support"
212 default y
213 help
214 This enables support for the FR451 CPU
215
216config CPU_FR451_COMPILE
217 bool "Specifically compile for FR451 core"
218 depends on CPU_FR451 && !CPU_FR401 && !CPU_FR405 && !CPU_FR551
219 default y
220 help
221 This causes appropriate flags to be passed to the compiler to
222 optimise for the FR451 CPU
223
224config CPU_FR551
225 bool "Include FR551 core support"
226 depends on !MMU
227 default y
228 help
229 This enables support for the FR555 CPU
230
231config CPU_FR551_COMPILE
232 bool "Specifically compile for FR551 core"
233 depends on CPU_FR551 && !CPU_FR401 && !CPU_FR405 && !CPU_FR451
234 default y
235 help
236 This causes appropriate flags to be passed to the compiler to
237 optimise for the FR555 CPU
238
239config FRV_L1_CACHE_SHIFT
240 int
241 default "5" if CPU_FR401 || CPU_FR405 || CPU_FR451
242 default "6" if CPU_FR551
243
244endmenu
245
246choice
247 prompt "System support"
248 default MB93091_VDK
249
250config MB93091_VDK
251 bool "MB93091 CPU board with or without motherboard"
252
253config MB93093_PDK
254 bool "MB93093 PDK unit"
255
256endchoice
257
258if MB93091_VDK
259choice
260 prompt "Motherboard support"
261 default MB93090_MB00
262
263config MB93090_MB00
264 bool "Use the MB93090-MB00 motherboard"
265 help
266 Select this option if the MB93091 CPU board is going to be used with
267 a MB93090-MB00 VDK motherboard
268
269config MB93091_NO_MB
270 bool "Use standalone"
271 help
272 Select this option if the MB93091 CPU board is going to be used
273 without a motherboard
274
275endchoice
276endif
277
David Howells1bcbba32006-09-25 23:32:04 -0700278config FUJITSU_MB93493
279 bool "MB93493 Multimedia chip"
280 help
281 Select this option if the MB93493 multimedia chip is going to be
282 used.
283
Linus Torvalds1da177e2005-04-16 15:20:36 -0700284choice
285 prompt "GP-Relative data support"
286 default GPREL_DATA_8
287 help
288 This option controls what data, if any, should be placed in the GP
289 relative data sections. Using this means that the compiler can
290 generate accesses to the data using GR16-relative addressing which
291 is faster than absolute instructions and saves space (2 instructions
292 per access).
293
294 However, the GPREL region is limited in size because the immediate
295 value used in the load and store instructions is limited to a 12-bit
296 signed number.
297
298 So if the linker starts complaining that accesses to GPREL data are
299 out of range, try changing this option from the default.
300
301 Note that modules will always be compiled with this feature disabled
302 as the module data will not be in range of the GP base address.
303
304config GPREL_DATA_8
305 bool "Put data objects of up to 8 bytes into GP-REL"
306
307config GPREL_DATA_4
308 bool "Put data objects of up to 4 bytes into GP-REL"
309
310config GPREL_DATA_NONE
311 bool "Don't use GP-REL"
312
313endchoice
314
David Howellsf8aec752006-01-08 01:01:23 -0800315config FRV_ONCPU_SERIAL
316 bool "Use on-CPU serial ports"
317 select SERIAL_8250
318 default y
319
Linus Torvalds1da177e2005-04-16 15:20:36 -0700320config PCI
321 bool "Use PCI"
322 depends on MB93090_MB00
323 default y
324 help
325 Some FR-V systems (such as the MB93090-MB00 VDK) have PCI
326 onboard. If you have one of these boards and you wish to use the PCI
327 facilities, say Y here.
328
329 The PCI-HOWTO, available from
330 <http://www.tldp.org/docs.html#howto>, contains valuable
331 information about which PCI hardware does work under Linux and which
332 doesn't.
333
334config RESERVE_DMA_COHERENT
335 bool "Reserve DMA coherent memory"
336 depends on PCI && !MMU
337 default y
338 help
339 Many PCI drivers require access to uncached memory for DMA device
340 communications (such as is done with some Ethernet buffer rings). If
341 a fully featured MMU is available, this can be done through page
342 table settings, but if not, a region has to be set aside and marked
343 with a special DAMPR register.
344
345 Setting this option causes uClinux to set aside a portion of the
346 available memory for use in this manner. The memory will then be
347 unavailable for normal kernel use.
348
349source "drivers/pci/Kconfig"
350
David Howells7a758312006-01-08 01:01:22 -0800351source "drivers/pcmcia/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700352
353#config MATH_EMULATION
354# bool "Math emulation support (EXPERIMENTAL)"
355# depends on EXPERIMENTAL
356# help
357# At some point in the future, this will cause floating-point math
358# instructions to be emulated by the kernel on machines that lack a
359# floating-point math coprocessor. Thrill-seekers and chronically
360# sleep-deprived psychotic hacker types can say Y now, everyone else
361# should probably wait a while.
362
363menu "Power management options"
364source kernel/power/Kconfig
365endmenu
366
367endmenu
368
369
370menu "Executable formats"
371
372source "fs/Kconfig.binfmt"
373
374endmenu
375
Sam Ravnborgd5950b42005-07-11 21:03:49 -0700376source "net/Kconfig"
377
Linus Torvalds1da177e2005-04-16 15:20:36 -0700378source "drivers/Kconfig"
379
380source "fs/Kconfig"
381
382source "arch/frv/Kconfig.debug"
383
384source "security/Kconfig"
385
386source "crypto/Kconfig"
387
388source "lib/Kconfig"