2 # For a description of the syntax of this configuration file,
3 # see Documentation/kbuild/kconfig-language.txt.
13 config RWSEM_GENERIC_SPINLOCK
17 config RWSEM_XCHGADD_ALGORITHM
20 config GENERIC_FIND_NEXT_BIT
24 config GENERIC_CALIBRATE_DELAY
28 config GENERIC_HARDIRQS
32 mainmenu "Fujitsu FR-V Kernel Configuration"
37 menu "Fujitsu FR-V system setup"
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
47 config FRV_OUTOFLINE_ATOMIC_OPS
48 bool "Out-of-line the FRV atomic operations"
51 Setting this option causes the FR-V atomic operations to be mostly
52 implemented out-of-line.
54 See Documentation/fujitsu/frv/atomic-ops.txt for more information.
57 bool "High memory support"
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
66 The arch is, however, capable of supporting up to 3GB of SDRAM.
69 bool "Allocate page tables in highmem"
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.
78 prompt "uClinux kernel load address"
80 default UCPAGE_OFFSET_C0000000
82 This option sets the base address for the uClinux kernel. The kernel
83 will rearrange the SDRAM layout to start at this address, and move
84 itself to start there. It must be greater than 0, and it must be
85 sufficiently less than 0xE0000000 that the SDRAM does not intersect
88 The base address must also be aligned such that the SDRAM controller
89 can decode it. For instance, a 512MB SDRAM bank must be 512MB aligned.
91 config UCPAGE_OFFSET_20000000
94 config UCPAGE_OFFSET_40000000
97 config UCPAGE_OFFSET_60000000
100 config UCPAGE_OFFSET_80000000
103 config UCPAGE_OFFSET_A0000000
106 config UCPAGE_OFFSET_C0000000
107 bool "0xC0000000 (Recommended)"
111 config PROTECT_KERNEL
112 bool "Protect core kernel against userspace"
116 Selecting this option causes the uClinux kernel to change the
117 permittivity of DAMPR register covering the core kernel image to
118 prevent userspace accessing the underlying memory directly.
121 prompt "CPU Caching mode"
122 default FRV_DEFL_CACHE_WBACK
124 This option determines the default caching mode for the kernel.
126 Write-Back caching mode involves the all reads and writes causing
127 the affected cacheline to be read into the cache first before being
128 operated upon. Memory is not then updated by a write until the cache
129 is filled and a cacheline needs to be displaced from the cache to
130 make room. Only at that point is it written back.
132 Write-Behind caching is similar to Write-Back caching, except that a
133 write won't fetch a cacheline into the cache if there isn't already
134 one there; it will write directly to memory instead.
136 Write-Through caching only fetches cachelines from memory on a
137 read. Writes always get written directly to memory. If the affected
138 cacheline is also in cache, it will be updated too.
140 The final option is to turn of caching entirely.
142 Note that not all CPUs support Write-Behind caching. If the CPU on
143 which the kernel is running doesn't, it'll fall back to Write-Back
146 config FRV_DEFL_CACHE_WBACK
149 config FRV_DEFL_CACHE_WBEHIND
152 config FRV_DEFL_CACHE_WTHRU
155 config FRV_DEFL_CACHE_DISABLED
160 menu "CPU core support"
163 bool "Include FR401 core support"
167 This enables support for the FR401, FR401A and FR403 CPUs
170 bool "Include FR405 core support"
174 This enables support for the FR405 CPU
177 bool "Include FR451 core support"
180 This enables support for the FR451 CPU
182 config CPU_FR451_COMPILE
183 bool "Specifically compile for FR451 core"
184 depends on CPU_FR451 && !CPU_FR401 && !CPU_FR405 && !CPU_FR551
187 This causes appropriate flags to be passed to the compiler to
188 optimise for the FR451 CPU
191 bool "Include FR551 core support"
195 This enables support for the FR555 CPU
197 config CPU_FR551_COMPILE
198 bool "Specifically compile for FR551 core"
199 depends on CPU_FR551 && !CPU_FR401 && !CPU_FR405 && !CPU_FR451
202 This causes appropriate flags to be passed to the compiler to
203 optimise for the FR555 CPU
205 config FRV_L1_CACHE_SHIFT
207 default "5" if CPU_FR401 || CPU_FR405 || CPU_FR451
208 default "6" if CPU_FR551
213 prompt "System support"
217 bool "MB93091 CPU board with or without motherboard"
220 bool "MB93093 PDK unit"
226 prompt "Motherboard support"
230 bool "Use the MB93090-MB00 motherboard"
232 Select this option if the MB93091 CPU board is going to be used with
233 a MB93090-MB00 VDK motherboard
236 bool "Use standalone"
238 Select this option if the MB93091 CPU board is going to be used
239 without a motherboard
245 prompt "GP-Relative data support"
248 This option controls what data, if any, should be placed in the GP
249 relative data sections. Using this means that the compiler can
250 generate accesses to the data using GR16-relative addressing which
251 is faster than absolute instructions and saves space (2 instructions
254 However, the GPREL region is limited in size because the immediate
255 value used in the load and store instructions is limited to a 12-bit
258 So if the linker starts complaining that accesses to GPREL data are
259 out of range, try changing this option from the default.
261 Note that modules will always be compiled with this feature disabled
262 as the module data will not be in range of the GP base address.
265 bool "Put data objects of up to 8 bytes into GP-REL"
268 bool "Put data objects of up to 4 bytes into GP-REL"
270 config GPREL_DATA_NONE
271 bool "Don't use GP-REL"
277 depends on MB93090_MB00
280 Some FR-V systems (such as the MB93090-MB00 VDK) have PCI
281 onboard. If you have one of these boards and you wish to use the PCI
282 facilities, say Y here.
284 The PCI-HOWTO, available from
285 <http://www.tldp.org/docs.html#howto>, contains valuable
286 information about which PCI hardware does work under Linux and which
289 config RESERVE_DMA_COHERENT
290 bool "Reserve DMA coherent memory"
291 depends on PCI && !MMU
294 Many PCI drivers require access to uncached memory for DMA device
295 communications (such as is done with some Ethernet buffer rings). If
296 a fully featured MMU is available, this can be done through page
297 table settings, but if not, a region has to be set aside and marked
298 with a special DAMPR register.
300 Setting this option causes uClinux to set aside a portion of the
301 available memory for use in this manner. The memory will then be
302 unavailable for normal kernel use.
304 source "drivers/pci/Kconfig"
307 tristate "Use PCMCIA"
309 Say Y here if you want to attach PCMCIA- or PC-cards to your FR-V
310 board. These are credit-card size devices such as network cards,
311 modems or hard drives often used with laptops computers. There are
312 actually two varieties of these cards: the older 16 bit PCMCIA cards
313 and the newer 32 bit CardBus cards. If you want to use CardBus
314 cards, you need to say Y here and also to "CardBus support" below.
316 To use your PC-cards, you will need supporting software from David
317 Hinds pcmcia-cs package (see the file <file:Documentation/Changes>
318 for location). Please also read the PCMCIA-HOWTO, available from
319 <http://www.tldp.org/docs.html#howto>.
321 To compile this driver as modules, choose M here: the
322 modules will be called pcmcia_core and ds.
324 #config MATH_EMULATION
325 # bool "Math emulation support (EXPERIMENTAL)"
326 # depends on EXPERIMENTAL
328 # At some point in the future, this will cause floating-point math
329 # instructions to be emulated by the kernel on machines that lack a
330 # floating-point math coprocessor. Thrill-seekers and chronically
331 # sleep-deprived psychotic hacker types can say Y now, everyone else
332 # should probably wait a while.
334 menu "Power management options"
335 source kernel/power/Kconfig
341 menu "Executable formats"
343 source "fs/Kconfig.binfmt"
347 source "drivers/Kconfig"
351 source "arch/frv/Kconfig.debug"
353 source "security/Kconfig"
355 source "crypto/Kconfig"