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