2 # For a description of the syntax of this configuration file,
3 # see Documentation/kbuild/kconfig-language.txt.
9 select HAVE_ARCH_TRACEHOOK
11 select HAVE_PERF_EVENTS
17 config RWSEM_GENERIC_SPINLOCK
21 config RWSEM_XCHGADD_ALGORITHM
24 config GENERIC_FIND_NEXT_BIT
28 config GENERIC_HWEIGHT
32 config GENERIC_CALIBRATE_DELAY
36 config GENERIC_HARDIRQS
40 config GENERIC_HARDIRQS_NO__DO_IRQ
52 config ARCH_HAS_ILOG2_U32
56 config ARCH_HAS_ILOG2_U64
64 mainmenu "Fujitsu FR-V Kernel Configuration"
68 source "kernel/Kconfig.freezer"
71 menu "Fujitsu FR-V system setup"
76 This options switches on and off support for the FR-V MMU
77 (effectively switching between vmlinux and uClinux). Not all FR-V
78 CPUs support this. Currently only the FR451 has a sufficiently
81 config FRV_OUTOFLINE_ATOMIC_OPS
82 bool "Out-of-line the FRV atomic operations"
85 Setting this option causes the FR-V atomic operations to be mostly
86 implemented out-of-line.
88 See Documentation/frv/atomic-ops.txt for more information.
91 bool "High memory support"
95 If you wish to use more than 256MB of memory with your MMU based
96 system, you will need to select this option. The kernel can only see
97 the memory between 0xC0000000 and 0xD0000000 directly... everything
100 The arch is, however, capable of supporting up to 3GB of SDRAM.
103 bool "Allocate page tables in highmem"
107 The VM uses one page of memory for each page table. For systems
108 with a lot of RAM, this can be wasteful of precious low memory.
109 Setting this option will put user-space page tables in high memory.
114 prompt "uClinux kernel load address"
116 default UCPAGE_OFFSET_C0000000
118 This option sets the base address for the uClinux kernel. The kernel
119 will rearrange the SDRAM layout to start at this address, and move
120 itself to start there. It must be greater than 0, and it must be
121 sufficiently less than 0xE0000000 that the SDRAM does not intersect
124 The base address must also be aligned such that the SDRAM controller
125 can decode it. For instance, a 512MB SDRAM bank must be 512MB aligned.
127 config UCPAGE_OFFSET_20000000
130 config UCPAGE_OFFSET_40000000
133 config UCPAGE_OFFSET_60000000
136 config UCPAGE_OFFSET_80000000
139 config UCPAGE_OFFSET_A0000000
142 config UCPAGE_OFFSET_C0000000
143 bool "0xC0000000 (Recommended)"
149 default 0x20000000 if UCPAGE_OFFSET_20000000
150 default 0x40000000 if UCPAGE_OFFSET_40000000
151 default 0x60000000 if UCPAGE_OFFSET_60000000
152 default 0x80000000 if UCPAGE_OFFSET_80000000
153 default 0xA0000000 if UCPAGE_OFFSET_A0000000
156 config PROTECT_KERNEL
157 bool "Protect core kernel against userspace"
161 Selecting this option causes the uClinux kernel to change the
162 permittivity of DAMPR register covering the core kernel image to
163 prevent userspace accessing the underlying memory directly.
166 prompt "CPU Caching mode"
167 default FRV_DEFL_CACHE_WBACK
169 This option determines the default caching mode for the kernel.
171 Write-Back caching mode involves the all reads and writes causing
172 the affected cacheline to be read into the cache first before being
173 operated upon. Memory is not then updated by a write until the cache
174 is filled and a cacheline needs to be displaced from the cache to
175 make room. Only at that point is it written back.
177 Write-Behind caching is similar to Write-Back caching, except that a
178 write won't fetch a cacheline into the cache if there isn't already
179 one there; it will write directly to memory instead.
181 Write-Through caching only fetches cachelines from memory on a
182 read. Writes always get written directly to memory. If the affected
183 cacheline is also in cache, it will be updated too.
185 The final option is to turn of caching entirely.
187 Note that not all CPUs support Write-Behind caching. If the CPU on
188 which the kernel is running doesn't, it'll fall back to Write-Back
191 config FRV_DEFL_CACHE_WBACK
194 config FRV_DEFL_CACHE_WBEHIND
197 config FRV_DEFL_CACHE_WTHRU
200 config FRV_DEFL_CACHE_DISABLED
205 menu "CPU core support"
208 bool "Include FR401 core support"
212 This enables support for the FR401, FR401A and FR403 CPUs
215 bool "Include FR405 core support"
219 This enables support for the FR405 CPU
222 bool "Include FR451 core support"
225 This enables support for the FR451 CPU
227 config CPU_FR451_COMPILE
228 bool "Specifically compile for FR451 core"
229 depends on CPU_FR451 && !CPU_FR401 && !CPU_FR405 && !CPU_FR551
232 This causes appropriate flags to be passed to the compiler to
233 optimise for the FR451 CPU
236 bool "Include FR551 core support"
240 This enables support for the FR555 CPU
242 config CPU_FR551_COMPILE
243 bool "Specifically compile for FR551 core"
244 depends on CPU_FR551 && !CPU_FR401 && !CPU_FR405 && !CPU_FR451
247 This causes appropriate flags to be passed to the compiler to
248 optimise for the FR555 CPU
250 config FRV_L1_CACHE_SHIFT
252 default "5" if CPU_FR401 || CPU_FR405 || CPU_FR451
253 default "6" if CPU_FR551
258 prompt "System support"
262 bool "MB93091 CPU board with or without motherboard"
265 bool "MB93093 PDK unit"
271 prompt "Motherboard support"
275 bool "Use the MB93090-MB00 motherboard"
277 Select this option if the MB93091 CPU board is going to be used with
278 a MB93090-MB00 VDK motherboard
281 bool "Use standalone"
283 Select this option if the MB93091 CPU board is going to be used
284 without a motherboard
289 config FUJITSU_MB93493
290 bool "MB93493 Multimedia chip"
292 Select this option if the MB93493 multimedia chip is going to be
296 prompt "GP-Relative data support"
299 This option controls what data, if any, should be placed in the GP
300 relative data sections. Using this means that the compiler can
301 generate accesses to the data using GR16-relative addressing which
302 is faster than absolute instructions and saves space (2 instructions
305 However, the GPREL region is limited in size because the immediate
306 value used in the load and store instructions is limited to a 12-bit
309 So if the linker starts complaining that accesses to GPREL data are
310 out of range, try changing this option from the default.
312 Note that modules will always be compiled with this feature disabled
313 as the module data will not be in range of the GP base address.
316 bool "Put data objects of up to 8 bytes into GP-REL"
319 bool "Put data objects of up to 4 bytes into GP-REL"
321 config GPREL_DATA_NONE
322 bool "Don't use GP-REL"
326 config FRV_ONCPU_SERIAL
327 bool "Use on-CPU serial ports"
333 depends on MB93090_MB00
336 Some FR-V systems (such as the MB93090-MB00 VDK) have PCI
337 onboard. If you have one of these boards and you wish to use the PCI
338 facilities, say Y here.
340 config RESERVE_DMA_COHERENT
341 bool "Reserve DMA coherent memory"
342 depends on PCI && !MMU
345 Many PCI drivers require access to uncached memory for DMA device
346 communications (such as is done with some Ethernet buffer rings). If
347 a fully featured MMU is available, this can be done through page
348 table settings, but if not, a region has to be set aside and marked
349 with a special DAMPR register.
351 Setting this option causes uClinux to set aside a portion of the
352 available memory for use in this manner. The memory will then be
353 unavailable for normal kernel use.
355 source "drivers/pci/Kconfig"
357 source "drivers/pcmcia/Kconfig"
359 #config MATH_EMULATION
360 # bool "Math emulation support (EXPERIMENTAL)"
361 # depends on EXPERIMENTAL
363 # At some point in the future, this will cause floating-point math
364 # instructions to be emulated by the kernel on machines that lack a
365 # floating-point math coprocessor. Thrill-seekers and chronically
366 # sleep-deprived psychotic hacker types can say Y now, everyone else
367 # should probably wait a while.
369 menu "Power management options"
371 config ARCH_SUSPEND_POSSIBLE
375 source kernel/power/Kconfig
381 menu "Executable formats"
383 source "fs/Kconfig.binfmt"
389 source "drivers/Kconfig"
393 source "arch/frv/Kconfig.debug"
395 source "security/Kconfig"
397 source "crypto/Kconfig"