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