5 select HAVE_ARCH_TRACEHOOK
7 select HAVE_PERF_EVENTS
8 select HAVE_GENERIC_HARDIRQS
9 select GENERIC_IRQ_SHOW
15 config RWSEM_GENERIC_SPINLOCK
19 config RWSEM_XCHGADD_ALGORITHM
22 config GENERIC_FIND_NEXT_BIT
26 config GENERIC_FIND_BIT_LE
30 config GENERIC_HWEIGHT
34 config GENERIC_CALIBRATE_DELAY
46 config ARCH_HAS_ILOG2_U32
50 config ARCH_HAS_ILOG2_U64
60 source "kernel/Kconfig.freezer"
63 menu "Fujitsu FR-V system setup"
68 This options switches on and off support for the FR-V MMU
69 (effectively switching between vmlinux and uClinux). Not all FR-V
70 CPUs support this. Currently only the FR451 has a sufficiently
73 config FRV_OUTOFLINE_ATOMIC_OPS
74 bool "Out-of-line the FRV atomic operations"
77 Setting this option causes the FR-V atomic operations to be mostly
78 implemented out-of-line.
80 See Documentation/frv/atomic-ops.txt for more information.
83 bool "High memory support"
87 If you wish to use more than 256MB of memory with your MMU based
88 system, you will need to select this option. The kernel can only see
89 the memory between 0xC0000000 and 0xD0000000 directly... everything
92 The arch is, however, capable of supporting up to 3GB of SDRAM.
95 bool "Allocate page tables in highmem"
99 The VM uses one page of memory for each page table. For systems
100 with a lot of RAM, this can be wasteful of precious low memory.
101 Setting this option will put user-space page tables in high memory.
106 prompt "uClinux kernel load address"
108 default UCPAGE_OFFSET_C0000000
110 This option sets the base address for the uClinux kernel. The kernel
111 will rearrange the SDRAM layout to start at this address, and move
112 itself to start there. It must be greater than 0, and it must be
113 sufficiently less than 0xE0000000 that the SDRAM does not intersect
116 The base address must also be aligned such that the SDRAM controller
117 can decode it. For instance, a 512MB SDRAM bank must be 512MB aligned.
119 config UCPAGE_OFFSET_20000000
122 config UCPAGE_OFFSET_40000000
125 config UCPAGE_OFFSET_60000000
128 config UCPAGE_OFFSET_80000000
131 config UCPAGE_OFFSET_A0000000
134 config UCPAGE_OFFSET_C0000000
135 bool "0xC0000000 (Recommended)"
141 default 0x20000000 if UCPAGE_OFFSET_20000000
142 default 0x40000000 if UCPAGE_OFFSET_40000000
143 default 0x60000000 if UCPAGE_OFFSET_60000000
144 default 0x80000000 if UCPAGE_OFFSET_80000000
145 default 0xA0000000 if UCPAGE_OFFSET_A0000000
148 config PROTECT_KERNEL
149 bool "Protect core kernel against userspace"
153 Selecting this option causes the uClinux kernel to change the
154 permittivity of DAMPR register covering the core kernel image to
155 prevent userspace accessing the underlying memory directly.
158 prompt "CPU Caching mode"
159 default FRV_DEFL_CACHE_WBACK
161 This option determines the default caching mode for the kernel.
163 Write-Back caching mode involves the all reads and writes causing
164 the affected cacheline to be read into the cache first before being
165 operated upon. Memory is not then updated by a write until the cache
166 is filled and a cacheline needs to be displaced from the cache to
167 make room. Only at that point is it written back.
169 Write-Behind caching is similar to Write-Back caching, except that a
170 write won't fetch a cacheline into the cache if there isn't already
171 one there; it will write directly to memory instead.
173 Write-Through caching only fetches cachelines from memory on a
174 read. Writes always get written directly to memory. If the affected
175 cacheline is also in cache, it will be updated too.
177 The final option is to turn of caching entirely.
179 Note that not all CPUs support Write-Behind caching. If the CPU on
180 which the kernel is running doesn't, it'll fall back to Write-Back
183 config FRV_DEFL_CACHE_WBACK
186 config FRV_DEFL_CACHE_WBEHIND
189 config FRV_DEFL_CACHE_WTHRU
192 config FRV_DEFL_CACHE_DISABLED
197 menu "CPU core support"
200 bool "Include FR401 core support"
204 This enables support for the FR401, FR401A and FR403 CPUs
207 bool "Include FR405 core support"
211 This enables support for the FR405 CPU
214 bool "Include FR451 core support"
217 This enables support for the FR451 CPU
219 config CPU_FR451_COMPILE
220 bool "Specifically compile for FR451 core"
221 depends on CPU_FR451 && !CPU_FR401 && !CPU_FR405 && !CPU_FR551
224 This causes appropriate flags to be passed to the compiler to
225 optimise for the FR451 CPU
228 bool "Include FR551 core support"
232 This enables support for the FR555 CPU
234 config CPU_FR551_COMPILE
235 bool "Specifically compile for FR551 core"
236 depends on CPU_FR551 && !CPU_FR401 && !CPU_FR405 && !CPU_FR451
239 This causes appropriate flags to be passed to the compiler to
240 optimise for the FR555 CPU
242 config FRV_L1_CACHE_SHIFT
244 default "5" if CPU_FR401 || CPU_FR405 || CPU_FR451
245 default "6" if CPU_FR551
250 prompt "System support"
254 bool "MB93091 CPU board with or without motherboard"
257 bool "MB93093 PDK unit"
263 prompt "Motherboard support"
267 bool "Use the MB93090-MB00 motherboard"
269 Select this option if the MB93091 CPU board is going to be used with
270 a MB93090-MB00 VDK motherboard
273 bool "Use standalone"
275 Select this option if the MB93091 CPU board is going to be used
276 without a motherboard
281 config FUJITSU_MB93493
282 bool "MB93493 Multimedia chip"
284 Select this option if the MB93493 multimedia chip is going to be
288 prompt "GP-Relative data support"
291 This option controls what data, if any, should be placed in the GP
292 relative data sections. Using this means that the compiler can
293 generate accesses to the data using GR16-relative addressing which
294 is faster than absolute instructions and saves space (2 instructions
297 However, the GPREL region is limited in size because the immediate
298 value used in the load and store instructions is limited to a 12-bit
301 So if the linker starts complaining that accesses to GPREL data are
302 out of range, try changing this option from the default.
304 Note that modules will always be compiled with this feature disabled
305 as the module data will not be in range of the GP base address.
308 bool "Put data objects of up to 8 bytes into GP-REL"
311 bool "Put data objects of up to 4 bytes into GP-REL"
313 config GPREL_DATA_NONE
314 bool "Don't use GP-REL"
318 config FRV_ONCPU_SERIAL
319 bool "Use on-CPU serial ports"
325 depends on MB93090_MB00
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.
332 config RESERVE_DMA_COHERENT
333 bool "Reserve DMA coherent memory"
334 depends on PCI && !MMU
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.
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.
347 source "drivers/pci/Kconfig"
349 source "drivers/pcmcia/Kconfig"
351 #config MATH_EMULATION
352 # bool "Math emulation support (EXPERIMENTAL)"
353 # depends on EXPERIMENTAL
355 # At some point in the future, this will cause floating-point math
356 # instructions to be emulated by the kernel on machines that lack a
357 # floating-point math coprocessor. Thrill-seekers and chronically
358 # sleep-deprived psychotic hacker types can say Y now, everyone else
359 # should probably wait a while.
361 menu "Power management options"
363 config ARCH_SUSPEND_POSSIBLE
366 source kernel/power/Kconfig
372 menu "Executable formats"
374 source "fs/Kconfig.binfmt"
380 source "drivers/Kconfig"
384 source "arch/frv/Kconfig.debug"
386 source "security/Kconfig"
388 source "crypto/Kconfig"