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 VIRT_TO_BUS
   9         select GENERIC_IRQ_SHOW
  10         select HAVE_DEBUG_BUGVERBOSE
  11         select ARCH_HAVE_NMI_SAFE_CMPXCHG
  12         select GENERIC_CPU_DEVICES
  13         select ARCH_HAS_DEVMEM_IS_ALLOWED
  14         select ARCH_WANT_IPC_PARSE_VERSION
  15         select OLD_SIGSUSPEND3
  16         select OLD_SIGACTION
  17         select HAVE_DEBUG_STACKOVERFLOW
  18         select ARCH_NO_COHERENT_DMA_MMAP
  19
  20 config CPU_BIG_ENDIAN
  21         def_bool y
  22
  23 config ZONE_DMA
  24         bool
  25         default y
  26
  27 config RWSEM_GENERIC_SPINLOCK
  28         bool
  29         default y
  30
  31 config RWSEM_XCHGADD_ALGORITHM
  32         bool
  33
  34 config GENERIC_HWEIGHT
  35         bool
  36         default y
  37
  38 config GENERIC_CALIBRATE_DELAY
  39         bool
  40         default n
  41
  42 config TIME_LOW_RES
  43         bool
  44         default y
  45
  46 config QUICKLIST
  47         bool
  48         default y
  49
  50 config ARCH_HAS_ILOG2_U32
  51         bool
  52         default y
  53
  54 config ARCH_HAS_ILOG2_U64
  55         bool
  56         default y
  57
  58 config HZ
  59         int
  60         default 1000
  61
  62 source "init/Kconfig"
  63
  64 source "kernel/Kconfig.freezer"
  65
  66
  67 menu "Fujitsu FR-V system setup"
  68
  69 config MMU
  70         bool "MMU support"
  71         help
  72           This options switches on and off support for the FR-V MMU
  73           (effectively switching between vmlinux and uClinux). Not all FR-V
  74           CPUs support this. Currently only the FR451 has a sufficiently
  75           featured MMU.
  76
  77 config FRV_OUTOFLINE_ATOMIC_OPS
  78         bool "Out-of-line the FRV atomic operations"
  79         default n
  80         help
  81           Setting this option causes the FR-V atomic operations to be mostly
  82           implemented out-of-line.
  83
  84           See Documentation/frv/atomic-ops.txt for more information.
  85
  86 config HIGHMEM
  87         bool "High memory support"
  88         depends on MMU
  89         default y
  90         help
  91           If you wish to use more than 256MB of memory with your MMU based
  92           system, you will need to select this option. The kernel can only see
  93           the memory between 0xC0000000 and 0xD0000000 directly... everything
  94           else must be kmapped.
  95
  96           The arch is, however, capable of supporting up to 3GB of SDRAM.
  97
  98 config HIGHPTE
  99         bool "Allocate page tables in highmem"
 100         depends on HIGHMEM
 101         default y
 102         help
 103           The VM uses one page of memory for each page table.  For systems
 104           with a lot of RAM, this can be wasteful of precious low memory.
 105           Setting this option will put user-space page tables in high memory.
 106
 107 source "mm/Kconfig"
 108
 109 choice
 110         prompt "uClinux kernel load address"
 111         depends on !MMU
 112         default UCPAGE_OFFSET_C0000000
 113         help
 114           This option sets the base address for the uClinux kernel. The kernel
 115           will rearrange the SDRAM layout to start at this address, and move
 116           itself to start there. It must be greater than 0, and it must be
 117           sufficiently less than 0xE0000000 that the SDRAM does not intersect
 118           the I/O region.
 119
 120           The base address must also be aligned such that the SDRAM controller
 121           can decode it. For instance, a 512MB SDRAM bank must be 512MB aligned.
 122
 123 config UCPAGE_OFFSET_20000000
 124        bool "0x20000000"
 125
 126 config UCPAGE_OFFSET_40000000
 127        bool "0x40000000"
 128
 129 config UCPAGE_OFFSET_60000000
 130        bool "0x60000000"
 131
 132 config UCPAGE_OFFSET_80000000
 133        bool "0x80000000"
 134
 135 config UCPAGE_OFFSET_A0000000
 136        bool "0xA0000000"
 137
 138 config UCPAGE_OFFSET_C0000000
 139        bool "0xC0000000 (Recommended)"
 140
 141 endchoice
 142
 143 config PAGE_OFFSET
 144         hex
 145         default 0x20000000 if UCPAGE_OFFSET_20000000
 146         default 0x40000000 if UCPAGE_OFFSET_40000000
 147         default 0x60000000 if UCPAGE_OFFSET_60000000
 148         default 0x80000000 if UCPAGE_OFFSET_80000000
 149         default 0xA0000000 if UCPAGE_OFFSET_A0000000
 150         default 0xC0000000
 151
 152 config PROTECT_KERNEL
 153         bool "Protect core kernel against userspace"
 154         depends on !MMU
 155         default y
 156         help
 157           Selecting this option causes the uClinux kernel to change the
 158           permittivity of DAMPR register covering the core kernel image to
 159           prevent userspace accessing the underlying memory directly.
 160
 161 choice
 162         prompt "CPU Caching mode"
 163         default FRV_DEFL_CACHE_WBACK
 164         help
 165           This option determines the default caching mode for the kernel.
 166
 167           Write-Back caching mode involves the all reads and writes causing
 168           the affected cacheline to be read into the cache first before being
 169           operated upon. Memory is not then updated by a write until the cache
 170           is filled and a cacheline needs to be displaced from the cache to
 171           make room. Only at that point is it written back.
 172
 173           Write-Behind caching is similar to Write-Back caching, except that a
 174           write won't fetch a cacheline into the cache if there isn't already
 175           one there; it will write directly to memory instead.
 176
 177           Write-Through caching only fetches cachelines from memory on a
 178           read. Writes always get written directly to memory. If the affected
 179           cacheline is also in cache, it will be updated too.
 180
 181           The final option is to turn of caching entirely.
 182
 183           Note that not all CPUs support Write-Behind caching. If the CPU on
 184           which the kernel is running doesn't, it'll fall back to Write-Back
 185           caching.
 186
 187 config FRV_DEFL_CACHE_WBACK
 188         bool "Write-Back"
 189
 190 config FRV_DEFL_CACHE_WBEHIND
 191         bool "Write-Behind"
 192
 193 config FRV_DEFL_CACHE_WTHRU
 194         bool "Write-Through"
 195
 196 config FRV_DEFL_CACHE_DISABLED
 197         bool "Disabled"
 198
 199 endchoice
 200
 201 menu "CPU core support"
 202
 203 config CPU_FR401
 204         bool "Include FR401 core support"
 205         depends on !MMU
 206         default y
 207         help
 208           This enables support for the FR401, FR401A and FR403 CPUs
 209
 210 config CPU_FR405
 211         bool "Include FR405 core support"
 212         depends on !MMU
 213         default y
 214         help
 215           This enables support for the FR405 CPU
 216
 217 config CPU_FR451
 218         bool "Include FR451 core support"
 219         default y
 220         help
 221           This enables support for the FR451 CPU
 222
 223 config CPU_FR451_COMPILE
 224         bool "Specifically compile for FR451 core"
 225         depends on CPU_FR451 && !CPU_FR401 && !CPU_FR405 && !CPU_FR551
 226         default y
 227         help
 228           This causes appropriate flags to be passed to the compiler to
 229           optimise for the FR451 CPU
 230
 231 config CPU_FR551
 232         bool "Include FR551 core support"
 233         depends on !MMU
 234         default y
 235         help
 236           This enables support for the FR555 CPU
 237
 238 config CPU_FR551_COMPILE
 239         bool "Specifically compile for FR551 core"
 240         depends on CPU_FR551 && !CPU_FR401 && !CPU_FR405 && !CPU_FR451
 241         default y
 242         help
 243           This causes appropriate flags to be passed to the compiler to
 244           optimise for the FR555 CPU
 245
 246 config FRV_L1_CACHE_SHIFT
 247         int
 248         default "5" if CPU_FR401 || CPU_FR405 || CPU_FR451
 249         default "6" if CPU_FR551
 250
 251 endmenu
 252
 253 choice
 254         prompt "System support"
 255         default MB93091_VDK
 256
 257 config MB93091_VDK
 258         bool "MB93091 CPU board with or without motherboard"
 259
 260 config MB93093_PDK
 261         bool "MB93093 PDK unit"
 262
 263 endchoice
 264
 265 if MB93091_VDK
 266 choice
 267         prompt "Motherboard support"
 268         default MB93090_MB00
 269
 270 config MB93090_MB00
 271         bool "Use the MB93090-MB00 motherboard"
 272         help
 273           Select this option if the MB93091 CPU board is going to be used with
 274           a MB93090-MB00 VDK motherboard
 275
 276 config MB93091_NO_MB
 277         bool "Use standalone"
 278         help
 279           Select this option if the MB93091 CPU board is going to be used
 280           without a motherboard
 281
 282 endchoice
 283 endif
 284
 285 config FUJITSU_MB93493
 286         bool "MB93493 Multimedia chip"
 287         help
 288           Select this option if the MB93493 multimedia chip is going to be
 289           used.
 290
 291 choice
 292         prompt "GP-Relative data support"
 293         default GPREL_DATA_8
 294         help
 295           This option controls what data, if any, should be placed in the GP
 296           relative data sections. Using this means that the compiler can
 297           generate accesses to the data using GR16-relative addressing which
 298           is faster than absolute instructions and saves space (2 instructions
 299           per access).
 300
 301           However, the GPREL region is limited in size because the immediate
 302           value used in the load and store instructions is limited to a 12-bit
 303           signed number.
 304
 305           So if the linker starts complaining that accesses to GPREL data are
 306           out of range, try changing this option from the default.
 307
 308           Note that modules will always be compiled with this feature disabled
 309           as the module data will not be in range of the GP base address.
 310
 311 config GPREL_DATA_8
 312         bool "Put data objects of up to 8 bytes into GP-REL"
 313
 314 config GPREL_DATA_4
 315         bool "Put data objects of up to 4 bytes into GP-REL"
 316
 317 config GPREL_DATA_NONE
 318         bool "Don't use GP-REL"
 319
 320 endchoice
 321
 322 config FRV_ONCPU_SERIAL
 323         bool "Use on-CPU serial ports"
 324         select SERIAL_8250
 325         default y
 326
 327 config PCI
 328         bool "Use PCI"
 329         depends on MB93090_MB00
 330         default y
 331         select GENERIC_PCI_IOMAP
 332         help
 333           Some FR-V systems (such as the MB93090-MB00 VDK) have PCI
 334           onboard. If you have one of these boards and you wish to use the PCI
 335           facilities, say Y here.
 336
 337 config RESERVE_DMA_COHERENT
 338         bool "Reserve DMA coherent memory"
 339         depends on PCI && !MMU
 340         default y
 341         help
 342           Many PCI drivers require access to uncached memory for DMA device
 343           communications (such as is done with some Ethernet buffer rings). If
 344           a fully featured MMU is available, this can be done through page
 345           table settings, but if not, a region has to be set aside and marked
 346           with a special DAMPR register.
 347
 348           Setting this option causes uClinux to set aside a portion of the
 349           available memory for use in this manner. The memory will then be
 350           unavailable for normal kernel use.
 351
 352 source "drivers/pci/Kconfig"
 353
 354 source "drivers/pcmcia/Kconfig"
 355
 356 menu "Power management options"
 357
 358 config ARCH_SUSPEND_POSSIBLE
 359         def_bool y
 360
 361 source kernel/power/Kconfig
 362 endmenu
 363
 364 endmenu
 365
 366
 367 menu "Executable formats"
 368
 369 source "fs/Kconfig.binfmt"
 370
 371 endmenu
 372
 373 source "net/Kconfig"
 374
 375 source "drivers/Kconfig"
 376
 377 source "fs/Kconfig"
 378
 379 source "arch/frv/Kconfig.debug"
 380
 381 source "security/Kconfig"
 382
 383 source "crypto/Kconfig"
 384
 385 source "lib/Kconfig"