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