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