arch/frv/Kconfig

   1 #
   2 # For a description of the syntax of this configuration file,
   3 # see Documentation/kbuild/kconfig-language.txt.
   4 #
   5 config FRV
   6         bool
   7         default y
   8         select HAVE_IDE
   9
  10 config ZONE_DMA
  11         bool
  12         default y
  13
  14 config RWSEM_GENERIC_SPINLOCK
  15         bool
  16         default y
  17
  18 config RWSEM_XCHGADD_ALGORITHM
  19         bool
  20
  21 config GENERIC_FIND_NEXT_BIT
  22         bool
  23         default y
  24
  25 config GENERIC_HWEIGHT
  26         bool
  27         default y
  28
  29 config GENERIC_CALIBRATE_DELAY
  30         bool
  31         default n
  32
  33 config GENERIC_HARDIRQS
  34         bool
  35         default y
  36
  37 config GENERIC_HARDIRQS_NO__DO_IRQ
  38         bool
  39         default y
  40
  41 config GENERIC_TIME
  42         bool
  43         default y
  44
  45 config TIME_LOW_RES
  46         bool
  47         default y
  48
  49 config QUICKLIST
  50         bool
  51         default y
  52
  53 config ARCH_HAS_ILOG2_U32
  54         bool
  55         default y
  56
  57 config ARCH_HAS_ILOG2_U64
  58         bool
  59         default y
  60
  61 config HZ
  62         int
  63         default 1000
  64
  65 mainmenu "Fujitsu FR-V Kernel Configuration"
  66
  67 source "init/Kconfig"
  68
  69 source "kernel/Kconfig.freezer"
  70
  71
  72 menu "Fujitsu FR-V system setup"
  73
  74 config MMU
  75         bool "MMU support"
  76         help
  77           This options switches on and off support for the FR-V MMU
  78           (effectively switching between vmlinux and uClinux). Not all FR-V
  79           CPUs support this. Currently only the FR451 has a sufficiently
  80           featured MMU.
  81
  82 config FRV_OUTOFLINE_ATOMIC_OPS
  83         bool "Out-of-line the FRV atomic operations"
  84         default n
  85         help
  86           Setting this option causes the FR-V atomic operations to be mostly
  87           implemented out-of-line.
  88
  89           See Documentation/frv/atomic-ops.txt for more information.
  90
  91 config HIGHMEM
  92         bool "High memory support"
  93         depends on MMU
  94         default y
  95         help
  96           If you wish to use more than 256MB of memory with your MMU based
  97           system, you will need to select this option. The kernel can only see
  98           the memory between 0xC0000000 and 0xD0000000 directly... everything
  99           else must be kmapped.
 100
 101           The arch is, however, capable of supporting up to 3GB of SDRAM.
 102
 103 config HIGHPTE
 104         bool "Allocate page tables in highmem"
 105         depends on HIGHMEM
 106         default y
 107         help
 108           The VM uses one page of memory for each page table.  For systems
 109           with a lot of RAM, this can be wasteful of precious low memory.
 110           Setting this option will put user-space page tables in high memory.
 111
 112 source "mm/Kconfig"
 113
 114 choice
 115         prompt "uClinux kernel load address"
 116         depends on !MMU
 117         default UCPAGE_OFFSET_C0000000
 118         help
 119           This option sets the base address for the uClinux kernel. The kernel
 120           will rearrange the SDRAM layout to start at this address, and move
 121           itself to start there. It must be greater than 0, and it must be
 122           sufficiently less than 0xE0000000 that the SDRAM does not intersect
 123           the I/O region.
 124
 125           The base address must also be aligned such that the SDRAM controller
 126           can decode it. For instance, a 512MB SDRAM bank must be 512MB aligned.
 127
 128 config UCPAGE_OFFSET_20000000
 129        bool "0x20000000"
 130
 131 config UCPAGE_OFFSET_40000000
 132        bool "0x40000000"
 133
 134 config UCPAGE_OFFSET_60000000
 135        bool "0x60000000"
 136
 137 config UCPAGE_OFFSET_80000000
 138        bool "0x80000000"
 139
 140 config UCPAGE_OFFSET_A0000000
 141        bool "0xA0000000"
 142
 143 config UCPAGE_OFFSET_C0000000
 144        bool "0xC0000000 (Recommended)"
 145
 146 endchoice
 147
 148 config PAGE_OFFSET
 149         hex
 150         default 0x20000000 if UCPAGE_OFFSET_20000000
 151         default 0x40000000 if UCPAGE_OFFSET_40000000
 152         default 0x60000000 if UCPAGE_OFFSET_60000000
 153         default 0x80000000 if UCPAGE_OFFSET_80000000
 154         default 0xA0000000 if UCPAGE_OFFSET_A0000000
 155         default 0xC0000000
 156
 157 config PROTECT_KERNEL
 158         bool "Protect core kernel against userspace"
 159         depends on !MMU
 160         default y
 161         help
 162           Selecting this option causes the uClinux kernel to change the
 163           permittivity of DAMPR register covering the core kernel image to
 164           prevent userspace accessing the underlying memory directly.
 165
 166 choice
 167         prompt "CPU Caching mode"
 168         default FRV_DEFL_CACHE_WBACK
 169         help
 170           This option determines the default caching mode for the kernel.
 171
 172           Write-Back caching mode involves the all reads and writes causing
 173           the affected cacheline to be read into the cache first before being
 174           operated upon. Memory is not then updated by a write until the cache
 175           is filled and a cacheline needs to be displaced from the cache to
 176           make room. Only at that point is it written back.
 177
 178           Write-Behind caching is similar to Write-Back caching, except that a
 179           write won't fetch a cacheline into the cache if there isn't already
 180           one there; it will write directly to memory instead.
 181
 182           Write-Through caching only fetches cachelines from memory on a
 183           read. Writes always get written directly to memory. If the affected
 184           cacheline is also in cache, it will be updated too.
 185
 186           The final option is to turn of caching entirely.
 187
 188           Note that not all CPUs support Write-Behind caching. If the CPU on
 189           which the kernel is running doesn't, it'll fall back to Write-Back
 190           caching.
 191
 192 config FRV_DEFL_CACHE_WBACK
 193         bool "Write-Back"
 194
 195 config FRV_DEFL_CACHE_WBEHIND
 196         bool "Write-Behind"
 197
 198 config FRV_DEFL_CACHE_WTHRU
 199         bool "Write-Through"
 200
 201 config FRV_DEFL_CACHE_DISABLED
 202         bool "Disabled"
 203
 204 endchoice
 205
 206 menu "CPU core support"
 207
 208 config CPU_FR401
 209         bool "Include FR401 core support"
 210         depends on !MMU
 211         default y
 212         help
 213           This enables support for the FR401, FR401A and FR403 CPUs
 214
 215 config CPU_FR405
 216         bool "Include FR405 core support"
 217         depends on !MMU
 218         default y
 219         help
 220           This enables support for the FR405 CPU
 221
 222 config CPU_FR451
 223         bool "Include FR451 core support"
 224         default y
 225         help
 226           This enables support for the FR451 CPU
 227
 228 config CPU_FR451_COMPILE
 229         bool "Specifically compile for FR451 core"
 230         depends on CPU_FR451 && !CPU_FR401 && !CPU_FR405 && !CPU_FR551
 231         default y
 232         help
 233           This causes appropriate flags to be passed to the compiler to
 234           optimise for the FR451 CPU
 235
 236 config CPU_FR551
 237         bool "Include FR551 core support"
 238         depends on !MMU
 239         default y
 240         help
 241           This enables support for the FR555 CPU
 242
 243 config CPU_FR551_COMPILE
 244         bool "Specifically compile for FR551 core"
 245         depends on CPU_FR551 && !CPU_FR401 && !CPU_FR405 && !CPU_FR451
 246         default y
 247         help
 248           This causes appropriate flags to be passed to the compiler to
 249           optimise for the FR555 CPU
 250
 251 config FRV_L1_CACHE_SHIFT
 252         int
 253         default "5" if CPU_FR401 || CPU_FR405 || CPU_FR451
 254         default "6" if CPU_FR551
 255
 256 endmenu
 257
 258 choice
 259         prompt "System support"
 260         default MB93091_VDK
 261
 262 config MB93091_VDK
 263         bool "MB93091 CPU board with or without motherboard"
 264
 265 config MB93093_PDK
 266         bool "MB93093 PDK unit"
 267
 268 endchoice
 269
 270 if MB93091_VDK
 271 choice
 272         prompt "Motherboard support"
 273         default MB93090_MB00
 274
 275 config MB93090_MB00
 276         bool "Use the MB93090-MB00 motherboard"
 277         help
 278           Select this option if the MB93091 CPU board is going to be used with
 279           a MB93090-MB00 VDK motherboard
 280
 281 config MB93091_NO_MB
 282         bool "Use standalone"
 283         help
 284           Select this option if the MB93091 CPU board is going to be used
 285           without a motherboard
 286
 287 endchoice
 288 endif
 289
 290 config FUJITSU_MB93493
 291         bool "MB93493 Multimedia chip"
 292         help
 293           Select this option if the MB93493 multimedia chip is going to be
 294           used.
 295
 296 choice
 297         prompt "GP-Relative data support"
 298         default GPREL_DATA_8
 299         help
 300           This option controls what data, if any, should be placed in the GP
 301           relative data sections. Using this means that the compiler can
 302           generate accesses to the data using GR16-relative addressing which
 303           is faster than absolute instructions and saves space (2 instructions
 304           per access).
 305
 306           However, the GPREL region is limited in size because the immediate
 307           value used in the load and store instructions is limited to a 12-bit
 308           signed number.
 309
 310           So if the linker starts complaining that accesses to GPREL data are
 311           out of range, try changing this option from the default.
 312
 313           Note that modules will always be compiled with this feature disabled
 314           as the module data will not be in range of the GP base address.
 315
 316 config GPREL_DATA_8
 317         bool "Put data objects of up to 8 bytes into GP-REL"
 318
 319 config GPREL_DATA_4
 320         bool "Put data objects of up to 4 bytes into GP-REL"
 321
 322 config GPREL_DATA_NONE
 323         bool "Don't use GP-REL"
 324
 325 endchoice
 326
 327 config FRV_ONCPU_SERIAL
 328         bool "Use on-CPU serial ports"
 329         select SERIAL_8250
 330         default y
 331
 332 config PCI
 333         bool "Use PCI"
 334         depends on MB93090_MB00
 335         default y
 336         help
 337           Some FR-V systems (such as the MB93090-MB00 VDK) have PCI
 338           onboard. If you have one of these boards and you wish to use the PCI
 339           facilities, say Y here.
 340
 341 config RESERVE_DMA_COHERENT
 342         bool "Reserve DMA coherent memory"
 343         depends on PCI && !MMU
 344         default y
 345         help
 346           Many PCI drivers require access to uncached memory for DMA device
 347           communications (such as is done with some Ethernet buffer rings). If
 348           a fully featured MMU is available, this can be done through page
 349           table settings, but if not, a region has to be set aside and marked
 350           with a special DAMPR register.
 351
 352           Setting this option causes uClinux to set aside a portion of the
 353           available memory for use in this manner. The memory will then be
 354           unavailable for normal kernel use.
 355
 356 source "drivers/pci/Kconfig"
 357
 358 source "drivers/pcmcia/Kconfig"
 359
 360 #config MATH_EMULATION
 361 #       bool "Math emulation support (EXPERIMENTAL)"
 362 #       depends on EXPERIMENTAL
 363 #       help
 364 #         At some point in the future, this will cause floating-point math
 365 #         instructions to be emulated by the kernel on machines that lack a
 366 #         floating-point math coprocessor.  Thrill-seekers and chronically
 367 #         sleep-deprived psychotic hacker types can say Y now, everyone else
 368 #         should probably wait a while.
 369
 370 menu "Power management options"
 371
 372 config ARCH_SUSPEND_POSSIBLE
 373         def_bool y
 374         depends on !SMP
 375
 376 source kernel/power/Kconfig
 377 endmenu
 378
 379 endmenu
 380
 381
 382 menu "Executable formats"
 383
 384 source "fs/Kconfig.binfmt"
 385
 386 endmenu
 387
 388 source "net/Kconfig"
 389
 390 source "drivers/Kconfig"
 391
 392 source "fs/Kconfig"
 393
 394 source "arch/frv/Kconfig.debug"
 395
 396 source "security/Kconfig"
 397
 398 source "crypto/Kconfig"
 399
 400 source "lib/Kconfig"