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_UID16
   9         select HAVE_GENERIC_HARDIRQS
  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 GENERIC_KERNEL_THREAD
  16
  17 config ZONE_DMA
  18         bool
  19         default y
  20
  21 config RWSEM_GENERIC_SPINLOCK
  22         bool
  23         default y
  24
  25 config RWSEM_XCHGADD_ALGORITHM
  26         bool
  27
  28 config GENERIC_HWEIGHT
  29         bool
  30         default y
  31
  32 config GENERIC_CALIBRATE_DELAY
  33         bool
  34         default n
  35
  36 config TIME_LOW_RES
  37         bool
  38         default y
  39
  40 config QUICKLIST
  41         bool
  42         default y
  43
  44 config ARCH_HAS_ILOG2_U32
  45         bool
  46         default y
  47
  48 config ARCH_HAS_ILOG2_U64
  49         bool
  50         default y
  51
  52 config HZ
  53         int
  54         default 1000
  55
  56 source "init/Kconfig"
  57
  58 source "kernel/Kconfig.freezer"
  59
  60
  61 menu "Fujitsu FR-V system setup"
  62
  63 config MMU
  64         bool "MMU support"
  65         help
  66           This options switches on and off support for the FR-V MMU
  67           (effectively switching between vmlinux and uClinux). Not all FR-V
  68           CPUs support this. Currently only the FR451 has a sufficiently
  69           featured MMU.
  70
  71 config FRV_OUTOFLINE_ATOMIC_OPS
  72         bool "Out-of-line the FRV atomic operations"
  73         default n
  74         help
  75           Setting this option causes the FR-V atomic operations to be mostly
  76           implemented out-of-line.
  77
  78           See Documentation/frv/atomic-ops.txt for more information.
  79
  80 config HIGHMEM
  81         bool "High memory support"
  82         depends on MMU
  83         default y
  84         help
  85           If you wish to use more than 256MB of memory with your MMU based
  86           system, you will need to select this option. The kernel can only see
  87           the memory between 0xC0000000 and 0xD0000000 directly... everything
  88           else must be kmapped.
  89
  90           The arch is, however, capable of supporting up to 3GB of SDRAM.
  91
  92 config HIGHPTE
  93         bool "Allocate page tables in highmem"
  94         depends on HIGHMEM
  95         default y
  96         help
  97           The VM uses one page of memory for each page table.  For systems
  98           with a lot of RAM, this can be wasteful of precious low memory.
  99           Setting this option will put user-space page tables in high memory.
 100
 101 source "mm/Kconfig"
 102
 103 choice
 104         prompt "uClinux kernel load address"
 105         depends on !MMU
 106         default UCPAGE_OFFSET_C0000000
 107         help
 108           This option sets the base address for the uClinux kernel. The kernel
 109           will rearrange the SDRAM layout to start at this address, and move
 110           itself to start there. It must be greater than 0, and it must be
 111           sufficiently less than 0xE0000000 that the SDRAM does not intersect
 112           the I/O region.
 113
 114           The base address must also be aligned such that the SDRAM controller
 115           can decode it. For instance, a 512MB SDRAM bank must be 512MB aligned.
 116
 117 config UCPAGE_OFFSET_20000000
 118        bool "0x20000000"
 119
 120 config UCPAGE_OFFSET_40000000
 121        bool "0x40000000"
 122
 123 config UCPAGE_OFFSET_60000000
 124        bool "0x60000000"
 125
 126 config UCPAGE_OFFSET_80000000
 127        bool "0x80000000"
 128
 129 config UCPAGE_OFFSET_A0000000
 130        bool "0xA0000000"
 131
 132 config UCPAGE_OFFSET_C0000000
 133        bool "0xC0000000 (Recommended)"
 134
 135 endchoice
 136
 137 config PAGE_OFFSET
 138         hex
 139         default 0x20000000 if UCPAGE_OFFSET_20000000
 140         default 0x40000000 if UCPAGE_OFFSET_40000000
 141         default 0x60000000 if UCPAGE_OFFSET_60000000
 142         default 0x80000000 if UCPAGE_OFFSET_80000000
 143         default 0xA0000000 if UCPAGE_OFFSET_A0000000
 144         default 0xC0000000
 145
 146 config PROTECT_KERNEL
 147         bool "Protect core kernel against userspace"
 148         depends on !MMU
 149         default y
 150         help
 151           Selecting this option causes the uClinux kernel to change the
 152           permittivity of DAMPR register covering the core kernel image to
 153           prevent userspace accessing the underlying memory directly.
 154
 155 choice
 156         prompt "CPU Caching mode"
 157         default FRV_DEFL_CACHE_WBACK
 158         help
 159           This option determines the default caching mode for the kernel.
 160
 161           Write-Back caching mode involves the all reads and writes causing
 162           the affected cacheline to be read into the cache first before being
 163           operated upon. Memory is not then updated by a write until the cache
 164           is filled and a cacheline needs to be displaced from the cache to
 165           make room. Only at that point is it written back.
 166
 167           Write-Behind caching is similar to Write-Back caching, except that a
 168           write won't fetch a cacheline into the cache if there isn't already
 169           one there; it will write directly to memory instead.
 170
 171           Write-Through caching only fetches cachelines from memory on a
 172           read. Writes always get written directly to memory. If the affected
 173           cacheline is also in cache, it will be updated too.
 174
 175           The final option is to turn of caching entirely.
 176
 177           Note that not all CPUs support Write-Behind caching. If the CPU on
 178           which the kernel is running doesn't, it'll fall back to Write-Back
 179           caching.
 180
 181 config FRV_DEFL_CACHE_WBACK
 182         bool "Write-Back"
 183
 184 config FRV_DEFL_CACHE_WBEHIND
 185         bool "Write-Behind"
 186
 187 config FRV_DEFL_CACHE_WTHRU
 188         bool "Write-Through"
 189
 190 config FRV_DEFL_CACHE_DISABLED
 191         bool "Disabled"
 192
 193 endchoice
 194
 195 menu "CPU core support"
 196
 197 config CPU_FR401
 198         bool "Include FR401 core support"
 199         depends on !MMU
 200         default y
 201         help
 202           This enables support for the FR401, FR401A and FR403 CPUs
 203
 204 config CPU_FR405
 205         bool "Include FR405 core support"
 206         depends on !MMU
 207         default y
 208         help
 209           This enables support for the FR405 CPU
 210
 211 config CPU_FR451
 212         bool "Include FR451 core support"
 213         default y
 214         help
 215           This enables support for the FR451 CPU
 216
 217 config CPU_FR451_COMPILE
 218         bool "Specifically compile for FR451 core"
 219         depends on CPU_FR451 && !CPU_FR401 && !CPU_FR405 && !CPU_FR551
 220         default y
 221         help
 222           This causes appropriate flags to be passed to the compiler to
 223           optimise for the FR451 CPU
 224
 225 config CPU_FR551
 226         bool "Include FR551 core support"
 227         depends on !MMU
 228         default y
 229         help
 230           This enables support for the FR555 CPU
 231
 232 config CPU_FR551_COMPILE
 233         bool "Specifically compile for FR551 core"
 234         depends on CPU_FR551 && !CPU_FR401 && !CPU_FR405 && !CPU_FR451
 235         default y
 236         help
 237           This causes appropriate flags to be passed to the compiler to
 238           optimise for the FR555 CPU
 239
 240 config FRV_L1_CACHE_SHIFT
 241         int
 242         default "5" if CPU_FR401 || CPU_FR405 || CPU_FR451
 243         default "6" if CPU_FR551
 244
 245 endmenu
 246
 247 choice
 248         prompt "System support"
 249         default MB93091_VDK
 250
 251 config MB93091_VDK
 252         bool "MB93091 CPU board with or without motherboard"
 253
 254 config MB93093_PDK
 255         bool "MB93093 PDK unit"
 256
 257 endchoice
 258
 259 if MB93091_VDK
 260 choice
 261         prompt "Motherboard support"
 262         default MB93090_MB00
 263
 264 config MB93090_MB00
 265         bool "Use the MB93090-MB00 motherboard"
 266         help
 267           Select this option if the MB93091 CPU board is going to be used with
 268           a MB93090-MB00 VDK motherboard
 269
 270 config MB93091_NO_MB
 271         bool "Use standalone"
 272         help
 273           Select this option if the MB93091 CPU board is going to be used
 274           without a motherboard
 275
 276 endchoice
 277 endif
 278
 279 config FUJITSU_MB93493
 280         bool "MB93493 Multimedia chip"
 281         help
 282           Select this option if the MB93493 multimedia chip is going to be
 283           used.
 284
 285 choice
 286         prompt "GP-Relative data support"
 287         default GPREL_DATA_8
 288         help
 289           This option controls what data, if any, should be placed in the GP
 290           relative data sections. Using this means that the compiler can
 291           generate accesses to the data using GR16-relative addressing which
 292           is faster than absolute instructions and saves space (2 instructions
 293           per access).
 294
 295           However, the GPREL region is limited in size because the immediate
 296           value used in the load and store instructions is limited to a 12-bit
 297           signed number.
 298
 299           So if the linker starts complaining that accesses to GPREL data are
 300           out of range, try changing this option from the default.
 301
 302           Note that modules will always be compiled with this feature disabled
 303           as the module data will not be in range of the GP base address.
 304
 305 config GPREL_DATA_8
 306         bool "Put data objects of up to 8 bytes into GP-REL"
 307
 308 config GPREL_DATA_4
 309         bool "Put data objects of up to 4 bytes into GP-REL"
 310
 311 config GPREL_DATA_NONE
 312         bool "Don't use GP-REL"
 313
 314 endchoice
 315
 316 config FRV_ONCPU_SERIAL
 317         bool "Use on-CPU serial ports"
 318         select SERIAL_8250
 319         default y
 320
 321 config PCI
 322         bool "Use PCI"
 323         depends on MB93090_MB00
 324         default y
 325         select GENERIC_PCI_IOMAP
 326         help
 327           Some FR-V systems (such as the MB93090-MB00 VDK) have PCI
 328           onboard. If you have one of these boards and you wish to use the PCI
 329           facilities, say Y here.
 330
 331 config RESERVE_DMA_COHERENT
 332         bool "Reserve DMA coherent memory"
 333         depends on PCI && !MMU
 334         default y
 335         help
 336           Many PCI drivers require access to uncached memory for DMA device
 337           communications (such as is done with some Ethernet buffer rings). If
 338           a fully featured MMU is available, this can be done through page
 339           table settings, but if not, a region has to be set aside and marked
 340           with a special DAMPR register.
 341
 342           Setting this option causes uClinux to set aside a portion of the
 343           available memory for use in this manner. The memory will then be
 344           unavailable for normal kernel use.
 345
 346 source "drivers/pci/Kconfig"
 347
 348 source "drivers/pcmcia/Kconfig"
 349
 350 menu "Power management options"
 351
 352 config ARCH_SUSPEND_POSSIBLE
 353         def_bool y
 354
 355 source kernel/power/Kconfig
 356 endmenu
 357
 358 endmenu
 359
 360
 361 menu "Executable formats"
 362
 363 source "fs/Kconfig.binfmt"
 364
 365 endmenu
 366
 367 source "net/Kconfig"
 368
 369 source "drivers/Kconfig"
 370
 371 source "fs/Kconfig"
 372
 373 source "arch/frv/Kconfig.debug"
 374
 375 source "security/Kconfig"
 376
 377 source "crypto/Kconfig"
 378
 379 source "lib/Kconfig"