vr.c revision 1.13
1 /* $NetBSD: vr.c,v 1.13 2000/02/21 13:46:05 shin Exp $ */ 2 3 /*- 4 * Copyright (c) 1999 5 * Shin Takemura and PocketBSD Project. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the PocketBSD project 18 * and its contributors. 19 * 4. Neither the name of the project nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 * 35 */ 36 #include <sys/param.h> 37 #include <sys/types.h> 38 #include <sys/systm.h> 39 #include <sys/device.h> 40 #include <sys/reboot.h> 41 #include <sys/kcore.h> 42 43 #include <machine/cpu.h> 44 #include <machine/intr.h> 45 #include <machine/reg.h> 46 #include <machine/psl.h> 47 #include <machine/locore.h> 48 #include <machine/sysconf.h> 49 #include <machine/bus.h> 50 #include <machine/autoconf.h> 51 52 #include <mips/mips_param.h> /* hokey spl()s */ 53 #include <mips/mips/mips_mcclock.h> /* mcclock CPUspeed estimation */ 54 55 #include <hpcmips/vr/vr.h> 56 #include <hpcmips/vr/vr_asm.h> 57 #include <hpcmips/vr/vripreg.h> 58 #include <hpcmips/vr/rtcreg.h> 59 #include <hpcmips/hpcmips/machdep.h> /* cpu_name */ 60 #include <machine/bootinfo.h> 61 62 #include "vrip.h" 63 #if NVRIP > 0 64 #include <hpcmips/vr/vripvar.h> 65 #endif 66 67 #include "vrbcu.h" 68 #if NVRBCU > 0 69 #include <hpcmips/vr/bcuvar.h> 70 #endif 71 72 #include "vrdsu.h" 73 #if NVRDSU > 0 74 #include <hpcmips/vr/vrdsuvar.h> 75 #endif 76 77 #include "com.h" 78 #if NCOM > 0 79 #include <sys/termios.h> 80 #include <sys/ttydefaults.h> 81 #include <dev/ic/comreg.h> 82 #include <dev/ic/comvar.h> 83 #include <hpcmips/vr/siureg.h> 84 #include <hpcmips/vr/com_vripvar.h> 85 #ifndef CONSPEED 86 #define CONSPEED TTYDEF_SPEED 87 #endif 88 #endif 89 90 #include "fb.h" 91 #include "vrkiu.h" 92 #if NFB > 0 || NVRKIU > 0 93 #include <dev/rcons/raster.h> 94 #include <dev/wscons/wsdisplayvar.h> 95 #endif 96 97 #if NFB > 0 98 #include <arch/hpcmips/dev/fbvar.h> 99 #endif 100 101 #if NFB > 0 102 #include <arch/hpcmips/vr/vrkiuvar.h> 103 #endif 104 105 void vr_init __P((void)); 106 void vr_os_init __P((void)); 107 void vr_bus_reset __P((void)); 108 int vr_intr __P((u_int32_t mask, u_int32_t pc, u_int32_t statusReg, u_int32_t causeReg)); 109 void vr_cons_init __P((void)); 110 void vr_device_register __P((struct device *, void *)); 111 void vr_fb_init __P((caddr_t*)); 112 void vr_mem_init __P((paddr_t)); 113 void vr_find_dram __P((paddr_t, paddr_t)); 114 void vr_reboot __P((int howto, char *bootstr)); 115 116 extern unsigned nullclkread __P((void)); 117 extern unsigned (*clkread) __P((void)); 118 119 /* 120 * CPU interrupt dispatch table (HwInt[0:3]) 121 */ 122 int null_handler __P((void*, u_int32_t, u_int32_t)); 123 static int (*intr_handler[4]) __P((void*, u_int32_t, u_int32_t)) = 124 { 125 null_handler, 126 null_handler, 127 null_handler, 128 null_handler 129 }; 130 static void *intr_arg[4]; 131 132 extern phys_ram_seg_t mem_clusters[]; 133 extern int mem_cluster_cnt; 134 135 void 136 vr_init() 137 { 138 /* 139 * Platform Information. 140 */ 141 142 /* 143 * Platform Specific Function Hooks 144 */ 145 platform.os_init = vr_os_init; 146 platform.bus_reset = vr_bus_reset; 147 platform.cons_init = vr_cons_init; 148 platform.device_register = vr_device_register; 149 platform.fb_init = vr_fb_init; 150 platform.mem_init = vr_mem_init; 151 platform.reboot = vr_reboot; 152 153 #if NVRBCU > 0 154 sprintf(cpu_name, "NEC %s rev%d.%d %d.%03dMHz", 155 vrbcu_vrip_getcpuname(), 156 vrbcu_vrip_getcpumajor(), 157 vrbcu_vrip_getcpuminor(), 158 vrbcu_vrip_getcpuclock() / 1000000, 159 (vrbcu_vrip_getcpuclock() % 1000000) / 1000); 160 #else 161 sprintf(cpu_name, "NEC VR41xx"); 162 #endif 163 } 164 165 void 166 vr_mem_init(kernend) 167 paddr_t kernend; 168 { 169 mem_clusters[0].start = 0; 170 mem_clusters[0].size = kernend; 171 mem_cluster_cnt = 1; 172 vr_find_dram(kernend, 0x02000000); 173 vr_find_dram(0x02000000, 0x04000000); 174 vr_find_dram(0x04000000, 0x06000000); 175 vr_find_dram(0x06000000, 0x08000000); 176 177 /* Clear currently unused D-RAM area (For reboot Windows CE clearly)*/ 178 memset((void *)(KERNBASE + 0x400), 0, KERNTEXTOFF - (KERNBASE + 0x800)); 179 } 180 181 void 182 vr_find_dram(addr, end) 183 paddr_t addr, end; 184 { 185 int n; 186 caddr_t page; 187 #ifdef NARLY_MEMORY_PROBE 188 int x, i; 189 #endif 190 191 n = mem_cluster_cnt; 192 for (; addr < end; addr += NBPG) { 193 194 page = (void *)MIPS_PHYS_TO_KSEG1(addr); 195 if (badaddr(page, 4)) 196 goto bad; 197 198 *(volatile int *)(page+0) = 0xa5a5a5a5; 199 *(volatile int *)(page+4) = 0x5a5a5a5a; 200 wbflush(); 201 if (*(volatile int *)(page+0) != 0xa5a5a5a5) 202 goto bad; 203 204 *(volatile int *)(page+0) = 0x5a5a5a5a; 205 *(volatile int *)(page+4) = 0xa5a5a5a5; 206 wbflush(); 207 if (*(volatile int *)(page+0) != 0x5a5a5a5a) 208 goto bad; 209 210 #ifdef NARLY_MEMORY_PROBE 211 x = random(); 212 for (i = 0; i < NBPG; i += 4) 213 *(volatile int *)(page+i) = (x ^ i); 214 wbflush(); 215 for (i = 0; i < NBPG; i += 4) 216 if (*(volatile int *)(page+i) != (x ^ i)) 217 goto bad; 218 219 x = random(); 220 for (i = 0; i < NBPG; i += 4) 221 *(volatile int *)(page+i) = (x ^ i); 222 wbflush(); 223 for (i = 0; i < NBPG; i += 4) 224 if (*(volatile int *)(page+i) != (x ^ i)) 225 goto bad; 226 #endif 227 228 if (!mem_clusters[n].size) 229 mem_clusters[n].start = addr; 230 mem_clusters[n].size += NBPG; 231 continue; 232 233 bad: 234 if (mem_clusters[n].size) 235 ++n; 236 continue; 237 } 238 if (mem_clusters[n].size) 239 ++n; 240 mem_cluster_cnt = n; 241 } 242 243 void 244 vr_fb_init(kernend) 245 caddr_t *kernend; 246 { 247 /* Nothing to do */ 248 } 249 250 void 251 vr_os_init() 252 { 253 /* 254 * Set up interrupt handling and I/O addresses. 255 */ 256 mips_hardware_intr = vr_intr; 257 258 splvec.splbio = MIPS_SPL0; 259 splvec.splnet = MIPS_SPL0; 260 splvec.spltty = MIPS_SPL0; 261 splvec.splimp = MIPS_SPL0; 262 splvec.splclock = MIPS_SPL_0_1; 263 splvec.splstatclock = MIPS_SPL_0_1; 264 265 /* no high resolution timer circuit; possibly never called */ 266 clkread = nullclkread; 267 268 #ifdef NOT_YET 269 mcclock_addr = (volatile struct chiptime *) 270 MIPS_PHYS_TO_KSEG1(Vr_SYS_CLOCK); 271 mc_cpuspeed(mcclock_addr, MIPS_INT_MASK_1); 272 #else 273 printf("%s(%d): cpuspeed estimation is notimplemented\n", 274 __FILE__, __LINE__); 275 #endif 276 #ifdef HPCMIPS_L1CACHE_DISABLE 277 cpuspeed = 1; /* XXX, CPU is very very slow because L1 cache is */ 278 /* disabled. */ 279 #endif /* HPCMIPS_L1CAHCE_DISABLE */ 280 } 281 282 283 /* 284 * Initalize the memory system and I/O buses. 285 */ 286 void 287 vr_bus_reset() 288 { 289 printf("%s(%d): vr_bus_reset() not implemented.\n", 290 __FILE__, __LINE__); 291 } 292 293 void 294 vr_cons_init() 295 { 296 #if NCOM > 0 || NFB > 0 || NVRKIU > 0 297 extern bus_space_tag_t system_bus_iot; 298 extern bus_space_tag_t mb_bus_space_init __P((void)); 299 #endif 300 301 #if NCOM > 0 302 if (bootinfo->bi_cnuse & BI_CNUSE_SERIAL) { 303 /* Serial console */ 304 mb_bus_space_init(); /* At this time, not initialized yet */ 305 if(com_vrip_cnattach(system_bus_iot, 0x0c000000, CONSPEED, 306 VRCOM_FREQ, 307 (TTYDEF_CFLAG & ~(CSIZE | PARENB)) | CS8)) { 308 printf("%s(%d): can't init serial console", __FILE__, __LINE__); 309 } else { 310 return; 311 } 312 } 313 #endif 314 315 #if NFB > 0 316 mb_bus_space_init(); /* At this time, not initialized yet */ 317 if(fb_cnattach(system_bus_iot, 0x0c000000, 0, 0)) { 318 printf("%s(%d): can't init fb console", __FILE__, __LINE__); 319 } else { 320 goto find_keyboard; 321 } 322 #endif 323 324 find_keyboard: 325 #if NVRKIU > 0 326 if (vrkiu_cnattach(system_bus_iot, VRIP_KIU_ADDR)) { 327 printf("%s(%d): can't init vrkiu as console", 328 __FILE__, __LINE__); 329 } else { 330 return; 331 } 332 #endif 333 } 334 335 void 336 vr_device_register(dev, aux) 337 struct device *dev; 338 void *aux; 339 { 340 printf("%s(%d): vr_device_register() not implemented.\n", 341 __FILE__, __LINE__); 342 panic("abort"); 343 } 344 345 void 346 vr_reboot(howto, bootstr) 347 int howto; 348 char *bootstr; 349 { 350 /* 351 * power down 352 */ 353 if ((howto & RB_POWERDOWN) == RB_POWERDOWN) { 354 printf("fake powerdown\n"); 355 __asm(__CONCAT(".word ",___STRING(VR_OPCODE_HIBERNATE))); 356 __asm("nop"); 357 __asm("nop"); 358 __asm("nop"); 359 __asm("nop"); 360 __asm("nop"); 361 __asm(".set reorder"); 362 /* not reach */ 363 vr_reboot(howto&~RB_HALT, bootstr); 364 } 365 /* 366 * halt 367 */ 368 if (howto & RB_HALT) { 369 #if NVRIP > 0 370 _spllower(~MIPS_INT_MASK_0); 371 vrip_intr_suspend(); 372 #else 373 splhigh(); 374 #endif 375 __asm(".set noreorder"); 376 __asm(__CONCAT(".word ",___STRING(VR_OPCODE_SUSPEND))); 377 __asm("nop"); 378 __asm("nop"); 379 __asm("nop"); 380 __asm("nop"); 381 __asm("nop"); 382 __asm(".set reorder"); 383 #if NVRIP > 0 384 vrip_intr_resume(); 385 #endif 386 } 387 /* 388 * reset 389 */ 390 #if NVRDSU 391 vrdsu_reset(); 392 #else 393 printf("%s(%d): There is no DSU.", __FILE__, __LINE__); 394 #endif 395 } 396 397 void * 398 vr_intr_establish(line, ih_fun, ih_arg) 399 int line; 400 int (*ih_fun) __P((void*, u_int32_t, u_int32_t)); 401 void *ih_arg; 402 { 403 if (intr_handler[line] != null_handler) { 404 panic("vr_intr_establish: can't establish duplicated intr handler."); 405 } 406 intr_handler[line] = ih_fun; 407 intr_arg[line] = ih_arg; 408 409 return (void*)line; 410 } 411 412 413 void 414 vr_intr_disestablish(ih) 415 void *ih; 416 { 417 int line = (int)ih; 418 intr_handler[line] = null_handler; 419 intr_arg[line] = NULL; 420 } 421 422 int 423 null_handler(arg, pc, statusReg) 424 void *arg; 425 u_int32_t pc; 426 u_int32_t statusReg; 427 { 428 printf("null_handler\n"); 429 return 0; 430 } 431 432 /* 433 * Handle interrupts. 434 */ 435 int 436 vr_intr(mask, pc, status, cause) 437 u_int32_t mask; 438 u_int32_t pc; 439 u_int32_t status; 440 u_int32_t cause; 441 { 442 int hwintr; 443 444 hwintr = (ffs(mask >> 10) -1) & 0x3; 445 (*intr_handler[hwintr])(intr_arg[hwintr], pc, status); 446 return (MIPS_SR_INT_IE | (status & ~cause & MIPS_HARD_INT_MASK)); 447 } 448
Indexes created Fri Sep 26 20:09:58 GMT 2025