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