blob: ec85c0d6c6da48677fca66e507e1dc52d64118f0 [file] [log] [blame]
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
9config UID16
10 bool
11 default y
12
13config 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
24config GENERIC_CALIBRATE_DELAY
25 bool
26 default n
27
28config GENERIC_HARDIRQS
29 bool
30 default n
31
32mainmenu "Fujitsu FR-V Kernel Configuration"
33
34source "init/Kconfig"
35
36
37menu "Fujitsu FR-V system setup"
38
39config MMU
40 bool "MMU support"
41 help
42 This options switches on and off support for the FR-V MMU
43 (effectively switching between vmlinux and uClinux). Not all FR-V
44 CPUs support this. Currently only the FR451 has a sufficiently
45 featured MMU.
46
47config FRV_OUTOFLINE_ATOMIC_OPS
48 bool "Out-of-line the FRV atomic operations"
49 default n
50 help
51 Setting this option causes the FR-V atomic operations to be mostly
52 implemented out-of-line.
53
54 See Documentation/fujitsu/frv/atomic-ops.txt for more information.
55
56config HIGHMEM
57 bool "High memory support"
58 depends on MMU
59 default y
60 help
61 If you wish to use more than 256MB of memory with your MMU based
62 system, you will need to select this option. The kernel can only see
63 the memory between 0xC0000000 and 0xD0000000 directly... everything
64 else must be kmapped.
65
66 The arch is, however, capable of supporting up to 3GB of SDRAM.
67
68config HIGHPTE
69 bool "Allocate page tables in highmem"
70 depends on HIGHMEM
71 default y
72 help
73 The VM uses one page of memory for each page table. For systems
74 with a lot of RAM, this can be wasteful of precious low memory.
75 Setting this option will put user-space page tables in high memory.
76
Dave Hansen3f22ab22005-06-23 00:07:43 -070077source "mm/Kconfig"
78
Linus Torvalds1da177e2005-04-16 15:20:36 -070079choice
80 prompt "uClinux kernel load address"
81 depends on !MMU
82 default UCPAGE_OFFSET_C0000000
83 help
84 This option sets the base address for the uClinux kernel. The kernel
85 will rearrange the SDRAM layout to start at this address, and move
86 itself to start there. It must be greater than 0, and it must be
87 sufficiently less than 0xE0000000 that the SDRAM does not intersect
88 the I/O region.
89
90 The base address must also be aligned such that the SDRAM controller
91 can decode it. For instance, a 512MB SDRAM bank must be 512MB aligned.
92
93config UCPAGE_OFFSET_20000000
94 bool "0x20000000"
95
96config UCPAGE_OFFSET_40000000
97 bool "0x40000000"
98
99config UCPAGE_OFFSET_60000000
100 bool "0x60000000"
101
102config UCPAGE_OFFSET_80000000
103 bool "0x80000000"
104
105config UCPAGE_OFFSET_A0000000
106 bool "0xA0000000"
107
108config UCPAGE_OFFSET_C0000000
109 bool "0xC0000000 (Recommended)"
110
111endchoice
112
113config PROTECT_KERNEL
114 bool "Protect core kernel against userspace"
115 depends on !MMU
116 default y
117 help
118 Selecting this option causes the uClinux kernel to change the
119 permittivity of DAMPR register covering the core kernel image to
120 prevent userspace accessing the underlying memory directly.
121
122choice
123 prompt "CPU Caching mode"
124 default FRV_DEFL_CACHE_WBACK
125 help
126 This option determines the default caching mode for the kernel.
127
128 Write-Back caching mode involves the all reads and writes causing
129 the affected cacheline to be read into the cache first before being
130 operated upon. Memory is not then updated by a write until the cache
131 is filled and a cacheline needs to be displaced from the cache to
132 make room. Only at that point is it written back.
133
134 Write-Behind caching is similar to Write-Back caching, except that a
135 write won't fetch a cacheline into the cache if there isn't already
136 one there; it will write directly to memory instead.
137
138 Write-Through caching only fetches cachelines from memory on a
139 read. Writes always get written directly to memory. If the affected
140 cacheline is also in cache, it will be updated too.
141
142 The final option is to turn of caching entirely.
143
144 Note that not all CPUs support Write-Behind caching. If the CPU on
145 which the kernel is running doesn't, it'll fall back to Write-Back
146 caching.
147
148config FRV_DEFL_CACHE_WBACK
149 bool "Write-Back"
150
151config FRV_DEFL_CACHE_WBEHIND
152 bool "Write-Behind"
153
154config FRV_DEFL_CACHE_WTHRU
155 bool "Write-Through"
156
157config FRV_DEFL_CACHE_DISABLED
158 bool "Disabled"
159
160endchoice
161
162menu "CPU core support"
163
164config CPU_FR401
165 bool "Include FR401 core support"
166 depends on !MMU
167 default y
168 help
169 This enables support for the FR401, FR401A and FR403 CPUs
170
171config CPU_FR405
172 bool "Include FR405 core support"
173 depends on !MMU
174 default y
175 help
176 This enables support for the FR405 CPU
177
178config CPU_FR451
179 bool "Include FR451 core support"
180 default y
181 help
182 This enables support for the FR451 CPU
183
184config CPU_FR451_COMPILE
185 bool "Specifically compile for FR451 core"
186 depends on CPU_FR451 && !CPU_FR401 && !CPU_FR405 && !CPU_FR551
187 default y
188 help
189 This causes appropriate flags to be passed to the compiler to
190 optimise for the FR451 CPU
191
192config CPU_FR551
193 bool "Include FR551 core support"
194 depends on !MMU
195 default y
196 help
197 This enables support for the FR555 CPU
198
199config CPU_FR551_COMPILE
200 bool "Specifically compile for FR551 core"
201 depends on CPU_FR551 && !CPU_FR401 && !CPU_FR405 && !CPU_FR451
202 default y
203 help
204 This causes appropriate flags to be passed to the compiler to
205 optimise for the FR555 CPU
206
207config FRV_L1_CACHE_SHIFT
208 int
209 default "5" if CPU_FR401 || CPU_FR405 || CPU_FR451
210 default "6" if CPU_FR551
211
212endmenu
213
214choice
215 prompt "System support"
216 default MB93091_VDK
217
218config MB93091_VDK
219 bool "MB93091 CPU board with or without motherboard"
220
221config MB93093_PDK
222 bool "MB93093 PDK unit"
223
224endchoice
225
226if MB93091_VDK
227choice
228 prompt "Motherboard support"
229 default MB93090_MB00
230
231config MB93090_MB00
232 bool "Use the MB93090-MB00 motherboard"
233 help
234 Select this option if the MB93091 CPU board is going to be used with
235 a MB93090-MB00 VDK motherboard
236
237config MB93091_NO_MB
238 bool "Use standalone"
239 help
240 Select this option if the MB93091 CPU board is going to be used
241 without a motherboard
242
243endchoice
244endif
245
246choice
247 prompt "GP-Relative data support"
248 default GPREL_DATA_8
249 help
250 This option controls what data, if any, should be placed in the GP
251 relative data sections. Using this means that the compiler can
252 generate accesses to the data using GR16-relative addressing which
253 is faster than absolute instructions and saves space (2 instructions
254 per access).
255
256 However, the GPREL region is limited in size because the immediate
257 value used in the load and store instructions is limited to a 12-bit
258 signed number.
259
260 So if the linker starts complaining that accesses to GPREL data are
261 out of range, try changing this option from the default.
262
263 Note that modules will always be compiled with this feature disabled
264 as the module data will not be in range of the GP base address.
265
266config GPREL_DATA_8
267 bool "Put data objects of up to 8 bytes into GP-REL"
268
269config GPREL_DATA_4
270 bool "Put data objects of up to 4 bytes into GP-REL"
271
272config GPREL_DATA_NONE
273 bool "Don't use GP-REL"
274
275endchoice
276
277config PCI
278 bool "Use PCI"
279 depends on MB93090_MB00
280 default y
281 help
282 Some FR-V systems (such as the MB93090-MB00 VDK) have PCI
283 onboard. If you have one of these boards and you wish to use the PCI
284 facilities, say Y here.
285
286 The PCI-HOWTO, available from
287 <http://www.tldp.org/docs.html#howto>, contains valuable
288 information about which PCI hardware does work under Linux and which
289 doesn't.
290
291config RESERVE_DMA_COHERENT
292 bool "Reserve DMA coherent memory"
293 depends on PCI && !MMU
294 default y
295 help
296 Many PCI drivers require access to uncached memory for DMA device
297 communications (such as is done with some Ethernet buffer rings). If
298 a fully featured MMU is available, this can be done through page
299 table settings, but if not, a region has to be set aside and marked
300 with a special DAMPR register.
301
302 Setting this option causes uClinux to set aside a portion of the
303 available memory for use in this manner. The memory will then be
304 unavailable for normal kernel use.
305
306source "drivers/pci/Kconfig"
307
308config PCMCIA
309 tristate "Use PCMCIA"
310 help
311 Say Y here if you want to attach PCMCIA- or PC-cards to your FR-V
312 board. These are credit-card size devices such as network cards,
313 modems or hard drives often used with laptops computers. There are
314 actually two varieties of these cards: the older 16 bit PCMCIA cards
315 and the newer 32 bit CardBus cards. If you want to use CardBus
316 cards, you need to say Y here and also to "CardBus support" below.
317
318 To use your PC-cards, you will need supporting software from David
319 Hinds pcmcia-cs package (see the file <file:Documentation/Changes>
320 for location). Please also read the PCMCIA-HOWTO, available from
321 <http://www.tldp.org/docs.html#howto>.
322
323 To compile this driver as modules, choose M here: the
324 modules will be called pcmcia_core and ds.
325
326#config MATH_EMULATION
327# bool "Math emulation support (EXPERIMENTAL)"
328# depends on EXPERIMENTAL
329# help
330# At some point in the future, this will cause floating-point math
331# instructions to be emulated by the kernel on machines that lack a
332# floating-point math coprocessor. Thrill-seekers and chronically
333# sleep-deprived psychotic hacker types can say Y now, everyone else
334# should probably wait a while.
335
336menu "Power management options"
337source kernel/power/Kconfig
338endmenu
339
340endmenu
341
342
343menu "Executable formats"
344
345source "fs/Kconfig.binfmt"
346
347endmenu
348
Sam Ravnborgd5950b42005-07-11 21:03:49 -0700349source "net/Kconfig"
350
Linus Torvalds1da177e2005-04-16 15:20:36 -0700351source "drivers/Kconfig"
352
353source "fs/Kconfig"
354
355source "arch/frv/Kconfig.debug"
356
357source "security/Kconfig"
358
359source "crypto/Kconfig"
360
361source "lib/Kconfig"