1# 2# Processor families 3# 4config CPU_SH2 5 select SH_WRITETHROUGH if !CPU_SH2A 6 bool 7 8config CPU_SH2A 9 bool 10 select CPU_SH2 11 12config CPU_SH3 13 bool 14 select CPU_HAS_INTEVT 15 select CPU_HAS_SR_RB 16 17config CPU_SH4 18 bool 19 select CPU_HAS_INTEVT 20 select CPU_HAS_SR_RB 21 select CPU_HAS_PTEA if (!CPU_SUBTYPE_ST40 && !CPU_SH4A) || CPU_SHX2 22 23config CPU_SH4A 24 bool 25 select CPU_SH4 26 27config CPU_SH4AL_DSP 28 bool 29 select CPU_SH4A 30 31config CPU_SUBTYPE_ST40 32 bool 33 select CPU_SH4 34 select CPU_HAS_INTC2_IRQ 35 36config CPU_SHX2 37 bool 38 39choice 40 prompt "Processor sub-type selection" 41 42# 43# Processor subtypes 44# 45 46# SH-2 Processor Support 47 48config CPU_SUBTYPE_SH7604 49 bool "Support SH7604 processor" 50 select CPU_SH2 51 52config CPU_SUBTYPE_SH7619 53 bool "Support SH7619 processor" 54 select CPU_SH2 55 56# SH-2A Processor Support 57 58config CPU_SUBTYPE_SH7206 59 bool "Support SH7206 processor" 60 select CPU_SH2A 61 62# SH-3 Processor Support 63 64config CPU_SUBTYPE_SH7300 65 bool "Support SH7300 processor" 66 select CPU_SH3 67 68config CPU_SUBTYPE_SH7705 69 bool "Support SH7705 processor" 70 select CPU_SH3 71 select CPU_HAS_IPR_IRQ 72 select CPU_HAS_PINT_IRQ 73 74config CPU_SUBTYPE_SH7706 75 bool "Support SH7706 processor" 76 select CPU_SH3 77 select CPU_HAS_IPR_IRQ 78 help 79 Select SH7706 if you have a 133 Mhz SH-3 HD6417706 CPU. 80 81config CPU_SUBTYPE_SH7707 82 bool "Support SH7707 processor" 83 select CPU_SH3 84 select CPU_HAS_PINT_IRQ 85 help 86 Select SH7707 if you have a 60 Mhz SH-3 HD6417707 CPU. 87 88config CPU_SUBTYPE_SH7708 89 bool "Support SH7708 processor" 90 select CPU_SH3 91 help 92 Select SH7708 if you have a 60 Mhz SH-3 HD6417708S or 93 if you have a 100 Mhz SH-3 HD6417708R CPU. 94 95config CPU_SUBTYPE_SH7709 96 bool "Support SH7709 processor" 97 select CPU_SH3 98 select CPU_HAS_IPR_IRQ 99 select CPU_HAS_PINT_IRQ 100 help 101 Select SH7709 if you have a 80 Mhz SH-3 HD6417709 CPU. 102 103config CPU_SUBTYPE_SH7710 104 bool "Support SH7710 processor" 105 select CPU_SH3 106 select CPU_HAS_IPR_IRQ 107 help 108 Select SH7710 if you have a SH3-DSP SH7710 CPU. 109 110config CPU_SUBTYPE_SH7712 111 bool "Support SH7712 processor" 112 select CPU_SH3 113 select CPU_HAS_IPR_IRQ 114 help 115 Select SH7712 if you have a SH3-DSP SH7712 CPU. 116 117# SH-4 Processor Support 118 119config CPU_SUBTYPE_SH7750 120 bool "Support SH7750 processor" 121 select CPU_SH4 122 select CPU_HAS_IPR_IRQ 123 help 124 Select SH7750 if you have a 200 Mhz SH-4 HD6417750 CPU. 125 126config CPU_SUBTYPE_SH7091 127 bool "Support SH7091 processor" 128 select CPU_SH4 129 select CPU_SUBTYPE_SH7750 130 help 131 Select SH7091 if you have an SH-4 based Sega device (such as 132 the Dreamcast, Naomi, and Naomi 2). 133 134config CPU_SUBTYPE_SH7750R 135 bool "Support SH7750R processor" 136 select CPU_SH4 137 select CPU_SUBTYPE_SH7750 138 select CPU_HAS_IPR_IRQ 139 140config CPU_SUBTYPE_SH7750S 141 bool "Support SH7750S processor" 142 select CPU_SH4 143 select CPU_SUBTYPE_SH7750 144 select CPU_HAS_IPR_IRQ 145 146config CPU_SUBTYPE_SH7751 147 bool "Support SH7751 processor" 148 select CPU_SH4 149 select CPU_HAS_IPR_IRQ 150 help 151 Select SH7751 if you have a 166 Mhz SH-4 HD6417751 CPU, 152 or if you have a HD6417751R CPU. 153 154config CPU_SUBTYPE_SH7751R 155 bool "Support SH7751R processor" 156 select CPU_SH4 157 select CPU_SUBTYPE_SH7751 158 select CPU_HAS_IPR_IRQ 159 160config CPU_SUBTYPE_SH7760 161 bool "Support SH7760 processor" 162 select CPU_SH4 163 select CPU_HAS_INTC2_IRQ 164 select CPU_HAS_IPR_IRQ 165 166config CPU_SUBTYPE_SH4_202 167 bool "Support SH4-202 processor" 168 select CPU_SH4 169 170# ST40 Processor Support 171 172config CPU_SUBTYPE_ST40STB1 173 bool "Support ST40STB1/ST40RA processors" 174 select CPU_SUBTYPE_ST40 175 help 176 Select ST40STB1 if you have a ST40RA CPU. 177 This was previously called the ST40STB1, hence the option name. 178 179config CPU_SUBTYPE_ST40GX1 180 bool "Support ST40GX1 processor" 181 select CPU_SUBTYPE_ST40 182 help 183 Select ST40GX1 if you have a ST40GX1 CPU. 184 185# SH-4A Processor Support 186 187config CPU_SUBTYPE_SH7770 188 bool "Support SH7770 processor" 189 select CPU_SH4A 190 191config CPU_SUBTYPE_SH7780 192 bool "Support SH7780 processor" 193 select CPU_SH4A 194 select CPU_HAS_INTC2_IRQ 195 196config CPU_SUBTYPE_SH7785 197 bool "Support SH7785 processor" 198 select CPU_SH4A 199 select CPU_SHX2 200 select CPU_HAS_INTC2_IRQ 201 202# SH4AL-DSP Processor Support 203 204config CPU_SUBTYPE_SH73180 205 bool "Support SH73180 processor" 206 select CPU_SH4AL_DSP 207 208config CPU_SUBTYPE_SH7343 209 bool "Support SH7343 processor" 210 select CPU_SH4AL_DSP 211 212config CPU_SUBTYPE_SH7722 213 bool "Support SH7722 processor" 214 select CPU_SH4AL_DSP 215 select CPU_SHX2 216 select CPU_HAS_IPR_IRQ 217 218endchoice 219 220menu "Memory management options" 221 222config QUICKLIST 223 def_bool y 224 225config MMU 226 bool "Support for memory management hardware" 227 depends on !CPU_SH2 228 default y 229 help 230 Some SH processors (such as SH-2/SH-2A) lack an MMU. In order to 231 boot on these systems, this option must not be set. 232 233 On other systems (such as the SH-3 and 4) where an MMU exists, 234 turning this off will boot the kernel on these machines with the 235 MMU implicitly switched off. 236 237config PAGE_OFFSET 238 hex 239 default "0x80000000" if MMU 240 default "0x00000000" 241 242config MEMORY_START 243 hex "Physical memory start address" 244 default "0x08000000" 245 ---help--- 246 Computers built with Hitachi SuperH processors always 247 map the ROM starting at address zero. But the processor 248 does not specify the range that RAM takes. 249 250 The physical memory (RAM) start address will be automatically 251 set to 08000000. Other platforms, such as the Solution Engine 252 boards typically map RAM at 0C000000. 253 254 Tweak this only when porting to a new machine which does not 255 already have a defconfig. Changing it from the known correct 256 value on any of the known systems will only lead to disaster. 257 258config MEMORY_SIZE 259 hex "Physical memory size" 260 default "0x00400000" 261 help 262 This sets the default memory size assumed by your SH kernel. It can 263 be overridden as normal by the 'mem=' argument on the kernel command 264 line. If unsure, consult your board specifications or just leave it 265 as 0x00400000 which was the default value before this became 266 configurable. 267 268config 32BIT 269 bool "Support 32-bit physical addressing through PMB" 270 depends on CPU_SH4A && MMU && (!X2TLB || BROKEN) 271 default y 272 help 273 If you say Y here, physical addressing will be extended to 274 32-bits through the SH-4A PMB. If this is not set, legacy 275 29-bit physical addressing will be used. 276 277config X2TLB 278 bool "Enable extended TLB mode" 279 depends on CPU_SHX2 && MMU && EXPERIMENTAL 280 help 281 Selecting this option will enable the extended mode of the SH-X2 282 TLB. For legacy SH-X behaviour and interoperability, say N. For 283 all of the fun new features and a willingless to submit bug reports, 284 say Y. 285 286config VSYSCALL 287 bool "Support vsyscall page" 288 depends on MMU 289 default y 290 help 291 This will enable support for the kernel mapping a vDSO page 292 in process space, and subsequently handing down the entry point 293 to the libc through the ELF auxiliary vector. 294 295 From the kernel side this is used for the signal trampoline. 296 For systems with an MMU that can afford to give up a page, 297 (the default value) say Y. 298 299config NODES_SHIFT 300 int 301 default "1" 302 depends on NEED_MULTIPLE_NODES 303 304config ARCH_FLATMEM_ENABLE 305 def_bool y 306 307config MAX_ACTIVE_REGIONS 308 int 309 default "1" 310 311config ARCH_POPULATES_NODE_MAP 312 def_bool y 313 314choice 315 prompt "Kernel page size" 316 default PAGE_SIZE_4KB 317 318config PAGE_SIZE_4KB 319 bool "4kB" 320 help 321 This is the default page size used by all SuperH CPUs. 322 323config PAGE_SIZE_8KB 324 bool "8kB" 325 depends on EXPERIMENTAL && X2TLB 326 help 327 This enables 8kB pages as supported by SH-X2 and later MMUs. 328 329config PAGE_SIZE_64KB 330 bool "64kB" 331 depends on EXPERIMENTAL && CPU_SH4 332 help 333 This enables support for 64kB pages, possible on all SH-4 334 CPUs and later. Highly experimental, not recommended. 335 336endchoice 337 338choice 339 prompt "HugeTLB page size" 340 depends on HUGETLB_PAGE && CPU_SH4 && MMU 341 default HUGETLB_PAGE_SIZE_64K 342 343config HUGETLB_PAGE_SIZE_64K 344 bool "64kB" 345 346config HUGETLB_PAGE_SIZE_256K 347 bool "256kB" 348 depends on X2TLB 349 350config HUGETLB_PAGE_SIZE_1MB 351 bool "1MB" 352 353config HUGETLB_PAGE_SIZE_4MB 354 bool "4MB" 355 depends on X2TLB 356 357config HUGETLB_PAGE_SIZE_64MB 358 bool "64MB" 359 depends on X2TLB 360 361endchoice 362 363source "mm/Kconfig" 364 365endmenu 366 367menu "Cache configuration" 368 369config SH7705_CACHE_32KB 370 bool "Enable 32KB cache size for SH7705" 371 depends on CPU_SUBTYPE_SH7705 372 default y 373 374config SH_DIRECT_MAPPED 375 bool "Use direct-mapped caching" 376 default n 377 help 378 Selecting this option will configure the caches to be direct-mapped, 379 even if the cache supports a 2 or 4-way mode. This is useful primarily 380 for debugging on platforms with 2 and 4-way caches (SH7750R/SH7751R, 381 SH4-202, SH4-501, etc.) 382 383 Turn this option off for platforms that do not have a direct-mapped 384 cache, and you have no need to run the caches in such a configuration. 385 386config SH_WRITETHROUGH 387 bool "Use write-through caching" 388 help 389 Selecting this option will configure the caches in write-through 390 mode, as opposed to the default write-back configuration. 391 392 Since there's sill some aliasing issues on SH-4, this option will 393 unfortunately still require the majority of flushing functions to 394 be implemented to deal with aliasing. 395 396 If unsure, say N. 397 398config SH_OCRAM 399 bool "Operand Cache RAM (OCRAM) support" 400 help 401 Selecting this option will automatically tear down the number of 402 sets in the dcache by half, which in turn exposes a memory range. 403 404 The addresses for the OC RAM base will vary according to the 405 processor version. Consult vendor documentation for specifics. 406 407 If unsure, say N. 408 409endmenu 410