arch/frv/Kconfig

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