tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1config FRV
2 bool
3 default y
4 select HAVE_IDE
5 select HAVE_ARCH_TRACEHOOK
6 select HAVE_IRQ_WORK
7 select HAVE_PERF_EVENTS
8 select HAVE_GENERIC_HARDIRQS
9 select GENERIC_IRQ_SHOW
10 select ARCH_HAVE_NMI_SAFE_CMPXCHG
11
12config ZONE_DMA
13 bool
14 default y
15
16config RWSEM_GENERIC_SPINLOCK
17 bool
18 default y
19
20config RWSEM_XCHGADD_ALGORITHM
21 bool
22
23config GENERIC_HWEIGHT
24 bool
25 default y
26
27config GENERIC_CALIBRATE_DELAY
28 bool
29 default n
30
31config TIME_LOW_RES
32 bool
33 default y
34
35config QUICKLIST
36 bool
37 default y
38
39config ARCH_HAS_ILOG2_U32
40 bool
41 default y
42
43config ARCH_HAS_ILOG2_U64
44 bool
45 default y
46
47config HZ
48 int
49 default 1000
50
51source "init/Kconfig"
52
53source "kernel/Kconfig.freezer"
54
55
56menu "Fujitsu FR-V system setup"
57
58config MMU
59 bool "MMU support"
60 help
61 This options switches on and off support for the FR-V MMU
62 (effectively switching between vmlinux and uClinux). Not all FR-V
63 CPUs support this. Currently only the FR451 has a sufficiently
64 featured MMU.
65
66config FRV_OUTOFLINE_ATOMIC_OPS
67 bool "Out-of-line the FRV atomic operations"
68 default n
69 help
70 Setting this option causes the FR-V atomic operations to be mostly
71 implemented out-of-line.
72
73 See Documentation/frv/atomic-ops.txt for more information.
74
75config HIGHMEM
76 bool "High memory support"
77 depends on MMU
78 default y
79 help
80 If you wish to use more than 256MB of memory with your MMU based
81 system, you will need to select this option. The kernel can only see
82 the memory between 0xC0000000 and 0xD0000000 directly... everything
83 else must be kmapped.
84
85 The arch is, however, capable of supporting up to 3GB of SDRAM.
86
87config HIGHPTE
88 bool "Allocate page tables in highmem"
89 depends on HIGHMEM
90 default y
91 help
92 The VM uses one page of memory for each page table. For systems
93 with a lot of RAM, this can be wasteful of precious low memory.
94 Setting this option will put user-space page tables in high memory.
95
96source "mm/Kconfig"
97
98choice
99 prompt "uClinux kernel load address"
100 depends on !MMU
101 default UCPAGE_OFFSET_C0000000
102 help
103 This option sets the base address for the uClinux kernel. The kernel
104 will rearrange the SDRAM layout to start at this address, and move
105 itself to start there. It must be greater than 0, and it must be
106 sufficiently less than 0xE0000000 that the SDRAM does not intersect
107 the I/O region.
108
109 The base address must also be aligned such that the SDRAM controller
110 can decode it. For instance, a 512MB SDRAM bank must be 512MB aligned.
111
112config UCPAGE_OFFSET_20000000
113 bool "0x20000000"
114
115config UCPAGE_OFFSET_40000000
116 bool "0x40000000"
117
118config UCPAGE_OFFSET_60000000
119 bool "0x60000000"
120
121config UCPAGE_OFFSET_80000000
122 bool "0x80000000"
123
124config UCPAGE_OFFSET_A0000000
125 bool "0xA0000000"
126
127config UCPAGE_OFFSET_C0000000
128 bool "0xC0000000 (Recommended)"
129
130endchoice
131
132config PAGE_OFFSET
133 hex
134 default 0x20000000 if UCPAGE_OFFSET_20000000
135 default 0x40000000 if UCPAGE_OFFSET_40000000
136 default 0x60000000 if UCPAGE_OFFSET_60000000
137 default 0x80000000 if UCPAGE_OFFSET_80000000
138 default 0xA0000000 if UCPAGE_OFFSET_A0000000
139 default 0xC0000000
140
141config PROTECT_KERNEL
142 bool "Protect core kernel against userspace"
143 depends on !MMU
144 default y
145 help
146 Selecting this option causes the uClinux kernel to change the
147 permittivity of DAMPR register covering the core kernel image to
148 prevent userspace accessing the underlying memory directly.
149
150choice
151 prompt "CPU Caching mode"
152 default FRV_DEFL_CACHE_WBACK
153 help
154 This option determines the default caching mode for the kernel.
155
156 Write-Back caching mode involves the all reads and writes causing
157 the affected cacheline to be read into the cache first before being
158 operated upon. Memory is not then updated by a write until the cache
159 is filled and a cacheline needs to be displaced from the cache to
160 make room. Only at that point is it written back.
161
162 Write-Behind caching is similar to Write-Back caching, except that a
163 write won't fetch a cacheline into the cache if there isn't already
164 one there; it will write directly to memory instead.
165
166 Write-Through caching only fetches cachelines from memory on a
167 read. Writes always get written directly to memory. If the affected
168 cacheline is also in cache, it will be updated too.
169
170 The final option is to turn of caching entirely.
171
172 Note that not all CPUs support Write-Behind caching. If the CPU on
173 which the kernel is running doesn't, it'll fall back to Write-Back
174 caching.
175
176config FRV_DEFL_CACHE_WBACK
177 bool "Write-Back"
178
179config FRV_DEFL_CACHE_WBEHIND
180 bool "Write-Behind"
181
182config FRV_DEFL_CACHE_WTHRU
183 bool "Write-Through"
184
185config FRV_DEFL_CACHE_DISABLED
186 bool "Disabled"
187
188endchoice
189
190menu "CPU core support"
191
192config CPU_FR401
193 bool "Include FR401 core support"
194 depends on !MMU
195 default y
196 help
197 This enables support for the FR401, FR401A and FR403 CPUs
198
199config CPU_FR405
200 bool "Include FR405 core support"
201 depends on !MMU
202 default y
203 help
204 This enables support for the FR405 CPU
205
206config CPU_FR451
207 bool "Include FR451 core support"
208 default y
209 help
210 This enables support for the FR451 CPU
211
212config CPU_FR451_COMPILE
213 bool "Specifically compile for FR451 core"
214 depends on CPU_FR451 && !CPU_FR401 && !CPU_FR405 && !CPU_FR551
215 default y
216 help
217 This causes appropriate flags to be passed to the compiler to
218 optimise for the FR451 CPU
219
220config CPU_FR551
221 bool "Include FR551 core support"
222 depends on !MMU
223 default y
224 help
225 This enables support for the FR555 CPU
226
227config CPU_FR551_COMPILE
228 bool "Specifically compile for FR551 core"
229 depends on CPU_FR551 && !CPU_FR401 && !CPU_FR405 && !CPU_FR451
230 default y
231 help
232 This causes appropriate flags to be passed to the compiler to
233 optimise for the FR555 CPU
234
235config FRV_L1_CACHE_SHIFT
236 int
237 default "5" if CPU_FR401 || CPU_FR405 || CPU_FR451
238 default "6" if CPU_FR551
239
240endmenu
241
242choice
243 prompt "System support"
244 default MB93091_VDK
245
246config MB93091_VDK
247 bool "MB93091 CPU board with or without motherboard"
248
249config MB93093_PDK
250 bool "MB93093 PDK unit"
251
252endchoice
253
254if MB93091_VDK
255choice
256 prompt "Motherboard support"
257 default MB93090_MB00
258
259config MB93090_MB00
260 bool "Use the MB93090-MB00 motherboard"
261 help
262 Select this option if the MB93091 CPU board is going to be used with
263 a MB93090-MB00 VDK motherboard
264
265config MB93091_NO_MB
266 bool "Use standalone"
267 help
268 Select this option if the MB93091 CPU board is going to be used
269 without a motherboard
270
271endchoice
272endif
273
274config FUJITSU_MB93493
275 bool "MB93493 Multimedia chip"
276 help
277 Select this option if the MB93493 multimedia chip is going to be
278 used.
279
280choice
281 prompt "GP-Relative data support"
282 default GPREL_DATA_8
283 help
284 This option controls what data, if any, should be placed in the GP
285 relative data sections. Using this means that the compiler can
286 generate accesses to the data using GR16-relative addressing which
287 is faster than absolute instructions and saves space (2 instructions
288 per access).
289
290 However, the GPREL region is limited in size because the immediate
291 value used in the load and store instructions is limited to a 12-bit
292 signed number.
293
294 So if the linker starts complaining that accesses to GPREL data are
295 out of range, try changing this option from the default.
296
297 Note that modules will always be compiled with this feature disabled
298 as the module data will not be in range of the GP base address.
299
300config GPREL_DATA_8
301 bool "Put data objects of up to 8 bytes into GP-REL"
302
303config GPREL_DATA_4
304 bool "Put data objects of up to 4 bytes into GP-REL"
305
306config GPREL_DATA_NONE
307 bool "Don't use GP-REL"
308
309endchoice
310
311config FRV_ONCPU_SERIAL
312 bool "Use on-CPU serial ports"
313 select SERIAL_8250
314 default y
315
316config PCI
317 bool "Use PCI"
318 depends on MB93090_MB00
319 default y
320 help
321 Some FR-V systems (such as the MB93090-MB00 VDK) have PCI
322 onboard. If you have one of these boards and you wish to use the PCI
323 facilities, say Y here.
324
325config RESERVE_DMA_COHERENT
326 bool "Reserve DMA coherent memory"
327 depends on PCI && !MMU
328 default y
329 help
330 Many PCI drivers require access to uncached memory for DMA device
331 communications (such as is done with some Ethernet buffer rings). If
332 a fully featured MMU is available, this can be done through page
333 table settings, but if not, a region has to be set aside and marked
334 with a special DAMPR register.
335
336 Setting this option causes uClinux to set aside a portion of the
337 available memory for use in this manner. The memory will then be
338 unavailable for normal kernel use.
339
340source "drivers/pci/Kconfig"
341
342source "drivers/pcmcia/Kconfig"
343
344#config MATH_EMULATION
345# bool "Math emulation support (EXPERIMENTAL)"
346# depends on EXPERIMENTAL
347# help
348# At some point in the future, this will cause floating-point math
349# instructions to be emulated by the kernel on machines that lack a
350# floating-point math coprocessor. Thrill-seekers and chronically
351# sleep-deprived psychotic hacker types can say Y now, everyone else
352# should probably wait a while.
353
354menu "Power management options"
355
356config ARCH_SUSPEND_POSSIBLE
357 def_bool y
358
359source kernel/power/Kconfig
360endmenu
361
362endmenu
363
364
365menu "Executable formats"
366
367source "fs/Kconfig.binfmt"
368
369endmenu
370
371source "net/Kconfig"
372
373source "drivers/Kconfig"
374
375source "fs/Kconfig"
376
377source "arch/frv/Kconfig.debug"
378
379source "security/Kconfig"
380
381source "crypto/Kconfig"
382
383source "lib/Kconfig"