arch/frv/Kconfig

   1 config FRV
   2         bool
   3         default y
   4         select HAVE_IDE
   5         select HAVE_ARCH_TRACEHOOK
   6         select HAVE_PERF_EVENTS
   7         select HAVE_UID16
   8         select HAVE_GENERIC_HARDIRQS
   9         select VIRT_TO_BUS
  10         select GENERIC_IRQ_SHOW
  11         select HAVE_DEBUG_BUGVERBOSE
  12         select ARCH_HAVE_NMI_SAFE_CMPXCHG
  13         select GENERIC_CPU_DEVICES
  14         select ARCH_WANT_IPC_PARSE_VERSION
  15         select OLD_SIGSUSPEND3
  16         select OLD_SIGACTION
  17
  18 config ZONE_DMA
  19         bool
  20         default y
  21
  22 config RWSEM_GENERIC_SPINLOCK
  23         bool
  24         default y
  25
  26 config RWSEM_XCHGADD_ALGORITHM
  27         bool
  28
  29 config GENERIC_HWEIGHT
  30         bool
  31         default y
  32
  33 config GENERIC_CALIBRATE_DELAY
  34         bool
  35         default n
  36
  37 config TIME_LOW_RES
  38         bool
  39         default y
  40
  41 config QUICKLIST
  42         bool
  43         default y
  44
  45 config ARCH_HAS_ILOG2_U32
  46         bool
  47         default y
  48
  49 config ARCH_HAS_ILOG2_U64
  50         bool
  51         default y
  52
  53 config HZ
  54         int
  55         default 1000
  56
  57 source "init/Kconfig"
  58
  59 source "kernel/Kconfig.freezer"
  60
  61
  62 menu "Fujitsu FR-V system setup"
  63
  64 config MMU
  65         bool "MMU support"
  66         help
  67           This options switches on and off support for the FR-V MMU
  68           (effectively switching between vmlinux and uClinux). Not all FR-V
  69           CPUs support this. Currently only the FR451 has a sufficiently
  70           featured MMU.
  71
  72 config FRV_OUTOFLINE_ATOMIC_OPS
  73         bool "Out-of-line the FRV atomic operations"
  74         default n
  75         help
  76           Setting this option causes the FR-V atomic operations to be mostly
  77           implemented out-of-line.
  78
  79           See Documentation/frv/atomic-ops.txt for more information.
  80
  81 config HIGHMEM
  82         bool "High memory support"
  83         depends on MMU
  84         default y
  85         help
  86           If you wish to use more than 256MB of memory with your MMU based
  87           system, you will need to select this option. The kernel can only see
  88           the memory between 0xC0000000 and 0xD0000000 directly... everything
  89           else must be kmapped.
  90
  91           The arch is, however, capable of supporting up to 3GB of SDRAM.
  92
  93 config HIGHPTE
  94         bool "Allocate page tables in highmem"
  95         depends on HIGHMEM
  96         default y
  97         help
  98           The VM uses one page of memory for each page table.  For systems
  99           with a lot of RAM, this can be wasteful of precious low memory.
 100           Setting this option will put user-space page tables in high memory.
 101
 102 source "mm/Kconfig"
 103
 104 choice
 105         prompt "uClinux kernel load address"
 106         depends on !MMU
 107         default UCPAGE_OFFSET_C0000000
 108         help
 109           This option sets the base address for the uClinux kernel. The kernel
 110           will rearrange the SDRAM layout to start at this address, and move
 111           itself to start there. It must be greater than 0, and it must be
 112           sufficiently less than 0xE0000000 that the SDRAM does not intersect
 113           the I/O region.
 114
 115           The base address must also be aligned such that the SDRAM controller
 116           can decode it. For instance, a 512MB SDRAM bank must be 512MB aligned.
 117
 118 config UCPAGE_OFFSET_20000000
 119        bool "0x20000000"
 120
 121 config UCPAGE_OFFSET_40000000
 122        bool "0x40000000"
 123
 124 config UCPAGE_OFFSET_60000000
 125        bool "0x60000000"
 126
 127 config UCPAGE_OFFSET_80000000
 128        bool "0x80000000"
 129
 130 config UCPAGE_OFFSET_A0000000
 131        bool "0xA0000000"
 132
 133 config UCPAGE_OFFSET_C0000000
 134        bool "0xC0000000 (Recommended)"
 135
 136 endchoice
 137
 138 config PAGE_OFFSET
 139         hex
 140         default 0x20000000 if UCPAGE_OFFSET_20000000
 141         default 0x40000000 if UCPAGE_OFFSET_40000000
 142         default 0x60000000 if UCPAGE_OFFSET_60000000
 143         default 0x80000000 if UCPAGE_OFFSET_80000000
 144         default 0xA0000000 if UCPAGE_OFFSET_A0000000
 145         default 0xC0000000
 146
 147 config PROTECT_KERNEL
 148         bool "Protect core kernel against userspace"
 149         depends on !MMU
 150         default y
 151         help
 152           Selecting this option causes the uClinux kernel to change the
 153           permittivity of DAMPR register covering the core kernel image to
 154           prevent userspace accessing the underlying memory directly.
 155
 156 choice
 157         prompt "CPU Caching mode"
 158         default FRV_DEFL_CACHE_WBACK
 159         help
 160           This option determines the default caching mode for the kernel.
 161
 162           Write-Back caching mode involves the all reads and writes causing
 163           the affected cacheline to be read into the cache first before being
 164           operated upon. Memory is not then updated by a write until the cache
 165           is filled and a cacheline needs to be displaced from the cache to
 166           make room. Only at that point is it written back.
 167
 168           Write-Behind caching is similar to Write-Back caching, except that a
 169           write won't fetch a cacheline into the cache if there isn't already
 170           one there; it will write directly to memory instead.
 171
 172           Write-Through caching only fetches cachelines from memory on a
 173           read. Writes always get written directly to memory. If the affected
 174           cacheline is also in cache, it will be updated too.
 175
 176           The final option is to turn of caching entirely.
 177
 178           Note that not all CPUs support Write-Behind caching. If the CPU on
 179           which the kernel is running doesn't, it'll fall back to Write-Back
 180           caching.
 181
 182 config FRV_DEFL_CACHE_WBACK
 183         bool "Write-Back"
 184
 185 config FRV_DEFL_CACHE_WBEHIND
 186         bool "Write-Behind"
 187
 188 config FRV_DEFL_CACHE_WTHRU
 189         bool "Write-Through"
 190
 191 config FRV_DEFL_CACHE_DISABLED
 192         bool "Disabled"
 193
 194 endchoice
 195
 196 menu "CPU core support"
 197
 198 config CPU_FR401
 199         bool "Include FR401 core support"
 200         depends on !MMU
 201         default y
 202         help
 203           This enables support for the FR401, FR401A and FR403 CPUs
 204
 205 config CPU_FR405
 206         bool "Include FR405 core support"
 207         depends on !MMU
 208         default y
 209         help
 210           This enables support for the FR405 CPU
 211
 212 config CPU_FR451
 213         bool "Include FR451 core support"
 214         default y
 215         help
 216           This enables support for the FR451 CPU
 217
 218 config CPU_FR451_COMPILE
 219         bool "Specifically compile for FR451 core"
 220         depends on CPU_FR451 && !CPU_FR401 && !CPU_FR405 && !CPU_FR551
 221         default y
 222         help
 223           This causes appropriate flags to be passed to the compiler to
 224           optimise for the FR451 CPU
 225
 226 config CPU_FR551
 227         bool "Include FR551 core support"
 228         depends on !MMU
 229         default y
 230         help
 231           This enables support for the FR555 CPU
 232
 233 config CPU_FR551_COMPILE
 234         bool "Specifically compile for FR551 core"
 235         depends on CPU_FR551 && !CPU_FR401 && !CPU_FR405 && !CPU_FR451
 236         default y
 237         help
 238           This causes appropriate flags to be passed to the compiler to
 239           optimise for the FR555 CPU
 240
 241 config FRV_L1_CACHE_SHIFT
 242         int
 243         default "5" if CPU_FR401 || CPU_FR405 || CPU_FR451
 244         default "6" if CPU_FR551
 245
 246 endmenu
 247
 248 choice
 249         prompt "System support"
 250         default MB93091_VDK
 251
 252 config MB93091_VDK
 253         bool "MB93091 CPU board with or without motherboard"
 254
 255 config MB93093_PDK
 256         bool "MB93093 PDK unit"
 257
 258 endchoice
 259
 260 if MB93091_VDK
 261 choice
 262         prompt "Motherboard support"
 263         default MB93090_MB00
 264
 265 config MB93090_MB00
 266         bool "Use the MB93090-MB00 motherboard"
 267         help
 268           Select this option if the MB93091 CPU board is going to be used with
 269           a MB93090-MB00 VDK motherboard
 270
 271 config MB93091_NO_MB
 272         bool "Use standalone"
 273         help
 274           Select this option if the MB93091 CPU board is going to be used
 275           without a motherboard
 276
 277 endchoice
 278 endif
 279
 280 config FUJITSU_MB93493
 281         bool "MB93493 Multimedia chip"
 282         help
 283           Select this option if the MB93493 multimedia chip is going to be
 284           used.
 285
 286 choice
 287         prompt "GP-Relative data support"
 288         default GPREL_DATA_8
 289         help
 290           This option controls what data, if any, should be placed in the GP
 291           relative data sections. Using this means that the compiler can
 292           generate accesses to the data using GR16-relative addressing which
 293           is faster than absolute instructions and saves space (2 instructions
 294           per access).
 295
 296           However, the GPREL region is limited in size because the immediate
 297           value used in the load and store instructions is limited to a 12-bit
 298           signed number.
 299
 300           So if the linker starts complaining that accesses to GPREL data are
 301           out of range, try changing this option from the default.
 302
 303           Note that modules will always be compiled with this feature disabled
 304           as the module data will not be in range of the GP base address.
 305
 306 config GPREL_DATA_8
 307         bool "Put data objects of up to 8 bytes into GP-REL"
 308
 309 config GPREL_DATA_4
 310         bool "Put data objects of up to 4 bytes into GP-REL"
 311
 312 config GPREL_DATA_NONE
 313         bool "Don't use GP-REL"
 314
 315 endchoice
 316
 317 config FRV_ONCPU_SERIAL
 318         bool "Use on-CPU serial ports"
 319         select SERIAL_8250
 320         default y
 321
 322 config PCI
 323         bool "Use PCI"
 324         depends on MB93090_MB00
 325         default y
 326         select GENERIC_PCI_IOMAP
 327         help
 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.
 331
 332 config RESERVE_DMA_COHERENT
 333         bool "Reserve DMA coherent memory"
 334         depends on PCI && !MMU
 335         default y
 336         help
 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.
 342
 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.
 346
 347 source "drivers/pci/Kconfig"
 348
 349 source "drivers/pcmcia/Kconfig"
 350
 351 menu "Power management options"
 352
 353 config ARCH_SUSPEND_POSSIBLE
 354         def_bool y
 355
 356 source kernel/power/Kconfig
 357 endmenu
 358
 359 endmenu
 360
 361
 362 menu "Executable formats"
 363
 364 source "fs/Kconfig.binfmt"
 365
 366 endmenu
 367
 368 source "net/Kconfig"
 369
 370 source "drivers/Kconfig"
 371
 372 source "fs/Kconfig"
 373
 374 source "arch/frv/Kconfig.debug"
 375
 376 source "security/Kconfig"
 377
 378 source "crypto/Kconfig"
 379
 380 source "lib/Kconfig"