obs600_machdep.c revision 1.1
1 /* $NetBSD: obs600_machdep.c,v 1.1 2010/03/18 14:15:38 kiyohara Exp $ */ 2 /* Original: md_machdep.c,v 1.3 2005/01/24 18:47:37 shige Exp $ */ 3 4 /* 5 * Copyright 2001, 2002 Wasabi Systems, Inc. 6 * All rights reserved. 7 * 8 * Written by Eduardo Horvath and Simon Burge for Wasabi Systems, Inc. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed for the NetBSD Project by 21 * Wasabi Systems, Inc. 22 * 4. The name of Wasabi Systems, Inc. may not be used to endorse 23 * or promote products derived from this software without specific prior 24 * written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND 27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 /* 40 * Copyright (C) 1995, 1996 Wolfgang Solfrank. 41 * Copyright (C) 1995, 1996 TooLs GmbH. 42 * All rights reserved. 43 * 44 * Redistribution and use in source and binary forms, with or without 45 * modification, are permitted provided that the following conditions 46 * are met: 47 * 1. Redistributions of source code must retain the above copyright 48 * notice, this list of conditions and the following disclaimer. 49 * 2. Redistributions in binary form must reproduce the above copyright 50 * notice, this list of conditions and the following disclaimer in the 51 * documentation and/or other materials provided with the distribution. 52 * 3. All advertising materials mentioning features or use of this software 53 * must display the following acknowledgement: 54 * This product includes software developed by TooLs GmbH. 55 * 4. The name of TooLs GmbH may not be used to endorse or promote products 56 * derived from this software without specific prior written permission. 57 * 58 * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR 59 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 60 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 61 * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 62 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 63 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 64 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 65 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 66 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 67 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 68 */ 69 70 #include <sys/cdefs.h> 71 __KERNEL_RCSID(0, "$NetBSD: obs600_machdep.c,v 1.1 2010/03/18 14:15:38 kiyohara Exp $"); 72 73 #include "opt_compat_netbsd.h" 74 #include "opt_ddb.h" 75 #include "opt_ipkdb.h" 76 #include "opt_modular.h" 77 78 #include <sys/param.h> 79 #include <sys/bus.h> 80 #include <sys/errno.h> 81 #include <sys/kernel.h> 82 #include <sys/ksyms.h> 83 #include <sys/mount.h> 84 #include <sys/reboot.h> 85 #include <sys/systm.h> 86 #include <sys/device.h> 87 88 #include <uvm/uvm.h> 89 #include <uvm/uvm_extern.h> 90 91 #include <machine/bus.h> 92 #include <machine/cpu.h> 93 #include <machine/obs600.h> 94 95 #include <powerpc/ibm4xx/amcc405ex.h> 96 #include <powerpc/ibm4xx/dcr4xx.h> 97 #include <powerpc/ibm4xx/dev/comopbvar.h> 98 #include <powerpc/ibm4xx/dev/gpiicreg.h> 99 #include <powerpc/ibm4xx/dev/opbvar.h> 100 #include <powerpc/ibm4xx/spr.h> 101 #include <powerpc/spr.h> 102 103 #include <dev/ic/comreg.h> 104 105 #include "ksyms.h" 106 107 #include "com.h" 108 #if (NCOM > 0) 109 #include <sys/termios.h> 110 111 #ifndef CONADDR 112 #define CONADDR AMCC405EX_UART0_BASE 113 #endif 114 #ifndef CONSPEED 115 #define CONSPEED B115200 116 #endif 117 #ifndef CONMODE 118 /* 8N1 */ 119 #define CONMODE ((TTYDEF_CFLAG & ~(CSIZE | CSTOPB | PARENB)) | CS8) 120 #endif 121 #endif /* NCOM */ 122 123 /* 124 * XXXX: 125 * It is very troublesome though we can calculate from various registers. X-< 126 */ 127 #define OBS600_CPU_FREQ (600 * 1000 * 1000) 128 #define OBS600_MEM_SIZE (1 * 1024 * 1024 * 1024) 129 130 #define TLB_PG_SIZE (16 * 1024 * 1024) 131 132 /* 133 * Global variables used here and there 134 */ 135 char bootpath[256]; 136 137 extern paddr_t msgbuf_paddr; 138 139 #if NKSYMS || defined(DDB) || defined(MODULAR) 140 void *startsym, *endsym; 141 #endif 142 143 void initppc(u_int, u_int, int, char *[], char *); 144 int lcsplx(int); 145 static int read_eeprom(int, char *); 146 147 148 void 149 initppc(u_int startkernel, u_int endkernel, int argc, char *argv[], 150 char *argstr) 151 { 152 vaddr_t va; 153 u_int memsize; 154 155 memsize = OBS600_MEM_SIZE; 156 157 /* Linear map kernel memory */ 158 for (va = 0; va < endkernel; va += TLB_PG_SIZE) 159 ppc4xx_tlb_reserve(va, va, TLB_PG_SIZE, TLB_EX); 160 161 /* 162 * Map console and I2C after RAM. (see pmap_tlbmiss()) 163 * All peripherals mapped on a page. 164 */ 165 ppc4xx_tlb_reserve(AMCC405EX_OPB_BASE, roundup(memsize, TLB_PG_SIZE), 166 TLB_PG_SIZE, TLB_I | TLB_G); 167 168 /* Initialize AMCC 405EX CPU */ 169 ibm40x_memsize_init(memsize, startkernel); 170 ibm4xx_init((void (*)(void))ext_intr); 171 172 /* Disable Watchdog, PIT and FIT interrupts. (u-boot uses PIT...) */ 173 mtspr(SPR_TCR, 0); 174 175 /* 176 * Set the page size. 177 */ 178 uvm_setpagesize(); 179 180 /* 181 * Initialize pmap module. 182 */ 183 pmap_bootstrap(startkernel, endkernel); 184 185 186 #if NKSYMS || defined(DDB) || defined(MODULAR) 187 ksyms_addsyms_elf((int)((u_int)endsym - (u_int)startsym), startsym, endsym); 188 #endif 189 #ifdef DDB 190 if (boothowto & RB_KDB) 191 Debugger(); 192 #endif 193 #ifdef IPKDB 194 /* 195 * Now trap to IPKDB 196 */ 197 ipkdb_init(); 198 if (boothowto & RB_KDB) 199 ipkdb_connect(0); 200 #endif 201 } 202 203 void 204 consinit(void) 205 { 206 207 #if (NCOM > 0) 208 com_opb_cnattach(OBS600_COM_FREQ, CONADDR, CONSPEED, CONMODE); 209 #endif /* NCOM */ 210 } 211 212 int 213 lcsplx(int ipl) 214 { 215 216 return spllower(ipl); /* XXX */ 217 } 218 219 220 /* 221 * Machine dependent startup code. 222 */ 223 void 224 cpu_startup(void) 225 { 226 prop_number_t pn; 227 prop_data_t pd; 228 u_char *macaddr, *macaddr1; 229 static u_char buf[16]; /* MAC address x2 buffer */ 230 231 /* 232 * cpu common startup 233 */ 234 ibm4xx_cpu_startup("OpenBlockS600 AMCC PowerPC 405EX Board"); 235 236 /* 237 * Set up the board properties database. 238 */ 239 board_info_init(); 240 241 read_eeprom(sizeof(buf), buf); 242 macaddr = &buf[0]; 243 macaddr1 = &buf[8]; 244 245 pn = prop_number_create_integer(OBS600_CPU_FREQ); 246 KASSERT(pn != NULL); 247 if (prop_dictionary_set(board_properties, "processor-frequency", pn) == 248 false) 249 panic("setting processor-frequency"); 250 prop_object_release(pn); 251 252 pn = prop_number_create_integer(OBS600_MEM_SIZE); 253 KASSERT(pn != NULL); 254 if (prop_dictionary_set(board_properties, "mem-size", pn) == false) 255 panic("setting mem-size"); 256 prop_object_release(pn); 257 258 #define ETHER_ADDR_LEN 6 259 260 pd = prop_data_create_data_nocopy(macaddr, ETHER_ADDR_LEN); 261 KASSERT(pd != NULL); 262 if (prop_dictionary_set(board_properties, "emac0-mac-addr", pd) == 263 false) 264 panic("setting emac0-mac-addr"); 265 prop_object_release(pd); 266 pd = prop_data_create_data_nocopy(macaddr1, ETHER_ADDR_LEN); 267 KASSERT(pd != NULL); 268 if (prop_dictionary_set(board_properties, "emac1-mac-addr", pd) == 269 false) 270 panic("setting emac1-mac-addr"); 271 prop_object_release(pd); 272 273 /* emac0 connects to phy 2 and emac1 to phy 3 via RGMII. */ 274 pn = prop_number_create_integer(2); 275 KASSERT(pn != NULL); 276 if (prop_dictionary_set(board_properties, "emac0-mii-phy", pn) == false) 277 panic("setting emac0-mii-phy"); 278 prop_object_release(pn); 279 pn = prop_number_create_integer(3); 280 KASSERT(pn != NULL); 281 if (prop_dictionary_set(board_properties, "emac1-mii-phy", pn) == false) 282 panic("setting emac1-mii-phy"); 283 prop_object_release(pn); 284 285 /* 286 * Now that we have VM, malloc()s are OK in bus_space. 287 */ 288 bus_space_mallocok(); 289 290 /* 291 * no fake mapiodev 292 */ 293 fake_mapiodev = 0; 294 } 295 296 /* 297 * Halt or reboot the machine after syncing/dumping according to howto. 298 */ 299 void 300 cpu_reboot(int howto, char *what) 301 { 302 static int syncing; 303 static char str[256]; 304 char *ap = str, *ap1 = ap; 305 306 boothowto = howto; 307 if (!cold && !(howto & RB_NOSYNC) && !syncing) { 308 syncing = 1; 309 vfs_shutdown(); /* sync */ 310 resettodr(); /* set wall clock */ 311 } 312 313 splhigh(); 314 315 if (!cold && (howto & RB_DUMP)) 316 ibm4xx_dumpsys(); 317 318 doshutdownhooks(); 319 320 pmf_system_shutdown(boothowto); 321 322 if ((howto & RB_POWERDOWN) == RB_POWERDOWN) { 323 /* Power off here if we know how...*/ 324 } 325 326 if (howto & RB_HALT) { 327 printf("halted\n\n"); 328 329 #if 0 330 goto reboot; /* XXX for now... */ 331 #endif 332 333 #ifdef DDB 334 printf("dropping to debugger\n"); 335 while(1) 336 Debugger(); 337 #endif 338 } 339 340 printf("rebooting\n\n"); 341 if (what && *what) { 342 if (strlen(what) > sizeof str - 5) 343 printf("boot string too large, ignored\n"); 344 else { 345 strcpy(str, what); 346 ap1 = ap = str + strlen(str); 347 *ap++ = ' '; 348 } 349 } 350 *ap++ = '-'; 351 if (howto & RB_SINGLE) 352 *ap++ = 's'; 353 if (howto & RB_KDB) 354 *ap++ = 'd'; 355 *ap++ = 0; 356 if (ap[-2] == '-') 357 *ap1 = 0; 358 359 /* flush cache for msgbuf */ 360 __syncicache((void *)msgbuf_paddr, round_page(MSGBUFSIZE)); 361 362 #if 0 363 reboot: 364 #endif 365 ppc4xx_reset(); 366 367 printf("ppc4xx_reset() failed!\n"); 368 #ifdef DDB 369 while(1) 370 Debugger(); 371 #else 372 while (1) 373 /* nothing */; 374 #endif 375 } 376 377 /* This function assume already initialized for I2C... */ 378 static int 379 read_eeprom(int len, char *buf) 380 { 381 bus_space_tag_t bst = opb_get_bus_space_tag(); 382 bus_space_handle_t bsh; 383 uint8_t mdcntl, sts; 384 int cnt, i = 0; 385 386 #define I2C_EEPROM_ADDR 0x52 387 388 if (bus_space_map(bst, AMCC405EX_IIC0_BASE, IIC_NREG, 0, &bsh)) 389 return ENOMEM; /* ??? */ 390 391 /* Clear Stop Complete Bit */ 392 bus_space_write_1(bst, bsh, IIC_STS, IIC_STS_SCMP); 393 /* Check init */ 394 do { 395 /* Get status */ 396 sts = bus_space_read_1(bst, bsh, IIC_STS); 397 } while ((sts & IIC_STS_PT)); 398 399 mdcntl = bus_space_read_1(bst, bsh, IIC_MDCNTL); 400 bus_space_write_1(bst, bsh, IIC_MDCNTL, 401 mdcntl | IIC_MDCNTL_FMDB | IIC_MDCNTL_FSDB); 402 403 /* 7-bit adressing */ 404 bus_space_write_1(bst, bsh, IIC_HMADR, 0); 405 bus_space_write_1(bst, bsh, IIC_LMADR, I2C_EEPROM_ADDR << 1); 406 407 bus_space_write_1(bst, bsh, IIC_MDBUF, 0); 408 bus_space_write_1(bst, bsh, IIC_CNTL, IIC_CNTL_PT); 409 do { 410 /* Get status */ 411 sts = bus_space_read_1(bst, bsh, IIC_STS); 412 } while ((sts & IIC_STS_PT) && !(sts & IIC_STS_ERR)); 413 414 cnt = 0; 415 while (cnt < len) { 416 /* always read 4byte */ 417 bus_space_write_1(bst, bsh, IIC_CNTL, 418 IIC_CNTL_PT | IIC_CNTL_RW | IIC_CNTL_TCT); 419 do { 420 /* Get status */ 421 sts = bus_space_read_1(bst, bsh, IIC_STS); 422 } while ((sts & IIC_STS_PT) && !(sts & IIC_STS_ERR)); 423 424 if ((sts & IIC_STS_PT) || (sts & IIC_STS_ERR)) 425 break; 426 if (sts & IIC_STS_MDBS) { 427 delay(1); 428 /* read 4byte */ 429 for (i = 0; i < 4 && cnt < len; i++, cnt++) 430 buf[cnt] = 431 bus_space_read_1(bst, bsh, IIC_MDBUF); 432 } 433 } 434 for ( ; i < 4; i++) 435 (void) bus_space_read_1(bst, bsh, IIC_MDBUF); 436 437 bus_space_unmap(bst, bsh, IIC_NREG); 438 439 return (cnt == len) ? 0 : EINVAL; 440 } 441
Indexes created Tue Sep 30 11:09:46 GMT 2025