obs600_machdep.c revision 1.12
1 /* $NetBSD: obs600_machdep.c,v 1.12 2021/03/06 08:29:19 rin 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 1.12 2021/03/06 08:29:19 rin Exp $"); 72 73 #include "opt_compat_netbsd.h" 74 #include "opt_ddb.h" 75 #include "opt_modular.h" 76 77 #include <sys/param.h> 78 #include <sys/bus.h> 79 #include <sys/errno.h> 80 #include <sys/kernel.h> 81 #include <sys/ksyms.h> 82 #include <sys/mount.h> 83 #include <sys/reboot.h> 84 #include <sys/systm.h> 85 #include <sys/device.h> 86 #include <sys/module.h> 87 #include <sys/bus.h> 88 #include <sys/cpu.h> 89 90 #include <uvm/uvm_extern.h> 91 92 #include <machine/obs600.h> 93 94 #include <powerpc/ibm4xx/amcc405ex.h> 95 #include <powerpc/ibm4xx/cpu.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> 100 101 #include <powerpc/spr.h> 102 #include <powerpc/ibm4xx/spr.h> 103 104 #include <dev/ic/comreg.h> 105 106 #include "ksyms.h" 107 108 #include "com.h" 109 #if (NCOM > 0) 110 #include <sys/termios.h> 111 112 #ifndef CONADDR 113 #define CONADDR AMCC405EX_UART0_BASE 114 #endif 115 #ifndef CONSPEED 116 #define CONSPEED B115200 117 #endif 118 #ifndef CONMODE 119 /* 8N1 */ 120 #define CONMODE ((TTYDEF_CFLAG & ~(CSIZE | CSTOPB | PARENB)) | CS8) 121 #endif 122 #endif /* NCOM */ 123 124 /* 125 * XXXX: 126 * It is very troublesome though we can calculate from various registers. X-< 127 */ 128 #define OBS600_CPU_FREQ (600 * 1000 * 1000) 129 #define OBS600_MEM_SIZE (1 * 1024 * 1024 * 1024) 130 131 #define TLB_PG_SIZE (16 * 1024 * 1024) 132 133 /* 134 * Global variables used here and there 135 */ 136 char bootpath[256]; 137 138 extern paddr_t msgbuf_paddr; 139 140 void initppc(vaddr_t, vaddr_t, int, char *[], char *); 141 static int read_eeprom(int, char *); 142 143 144 void 145 initppc(vaddr_t startkernel, vaddr_t endkernel, int argc, char *argv[], 146 char *argstr) 147 { 148 vaddr_t va; 149 u_int memsize; 150 151 memsize = OBS600_MEM_SIZE; 152 153 /* Linear map kernel memory */ 154 for (va = 0; va < endkernel; va += TLB_PG_SIZE) 155 ppc4xx_tlb_reserve(va, va, TLB_PG_SIZE, TLB_EX); 156 157 /* 158 * Map console and I2C after RAM. (see pmap_tlbmiss()) 159 * All peripherals mapped on a page. 160 */ 161 ppc4xx_tlb_reserve(AMCC405EX_OPB_BASE, roundup(memsize, TLB_PG_SIZE), 162 TLB_PG_SIZE, TLB_I | TLB_G); 163 164 /* Initialize AMCC 405EX CPU */ 165 ibm40x_memsize_init(memsize, startkernel); 166 ibm4xx_init(startkernel, endkernel, pic_ext_intr); 167 168 #ifdef DDB 169 if (boothowto & RB_KDB) 170 Debugger(); 171 #endif 172 173 /* 174 * Look for the ibm4xx modules in the right place. 175 */ 176 module_machine = module_machine_ibm4xx; 177 } 178 179 void 180 consinit(void) 181 { 182 183 #if (NCOM > 0) 184 com_opb_cnattach(OBS600_COM_FREQ, CONADDR, CONSPEED, CONMODE); 185 #endif /* NCOM */ 186 } 187 188 /* 189 * Machine dependent startup code. 190 */ 191 void 192 cpu_startup(void) 193 { 194 prop_number_t pn; 195 prop_data_t pd; 196 u_char *macaddr, *macaddr1; 197 static u_char buf[16]; /* MAC address x2 buffer */ 198 199 /* 200 * cpu common startup 201 */ 202 ibm4xx_cpu_startup("OpenBlockS600 AMCC PowerPC 405EX Board"); 203 204 /* 205 * Set up the board properties database. 206 */ 207 board_info_init(); 208 209 pn = prop_number_create_integer(OBS600_CPU_FREQ); 210 KASSERT(pn != NULL); 211 if (prop_dictionary_set(board_properties, "processor-frequency", pn) == 212 false) 213 panic("setting processor-frequency"); 214 prop_object_release(pn); 215 216 pn = prop_number_create_integer(OBS600_MEM_SIZE); 217 KASSERT(pn != NULL); 218 if (prop_dictionary_set(board_properties, "mem-size", pn) == false) 219 panic("setting mem-size"); 220 prop_object_release(pn); 221 222 calc_delayconst(); /* required by read_eeprom() */ 223 224 #define ETHER_ADDR_LEN 6 225 226 read_eeprom(sizeof(buf), buf); 227 macaddr = &buf[0]; 228 macaddr1 = &buf[8]; 229 230 pd = prop_data_create_data_nocopy(macaddr, ETHER_ADDR_LEN); 231 KASSERT(pd != NULL); 232 if (prop_dictionary_set(board_properties, "emac0-mac-addr", pd) == 233 false) 234 panic("setting emac0-mac-addr"); 235 prop_object_release(pd); 236 pd = prop_data_create_data_nocopy(macaddr1, ETHER_ADDR_LEN); 237 KASSERT(pd != NULL); 238 if (prop_dictionary_set(board_properties, "emac1-mac-addr", pd) == 239 false) 240 panic("setting emac1-mac-addr"); 241 prop_object_release(pd); 242 243 /* emac0 connects to phy 2 and emac1 to phy 3 via RGMII. */ 244 pn = prop_number_create_integer(2); 245 KASSERT(pn != NULL); 246 if (prop_dictionary_set(board_properties, "emac0-mii-phy", pn) == false) 247 panic("setting emac0-mii-phy"); 248 prop_object_release(pn); 249 pn = prop_number_create_integer(3); 250 KASSERT(pn != NULL); 251 if (prop_dictionary_set(board_properties, "emac1-mii-phy", pn) == false) 252 panic("setting emac1-mii-phy"); 253 prop_object_release(pn); 254 255 /* 256 * Now that we have VM, malloc()s are OK in bus_space. 257 */ 258 bus_space_mallocok(); 259 260 /* 261 * no fake mapiodev 262 */ 263 fake_mapiodev = 0; 264 265 splraise(-1); 266 } 267 268 /* 269 * Halt or reboot the machine after syncing/dumping according to howto. 270 */ 271 void 272 cpu_reboot(int howto, char *what) 273 { 274 static int syncing; 275 static char str[256]; 276 char *ap = str, *ap1 = ap; 277 278 boothowto = howto; 279 if (!cold && !(howto & RB_NOSYNC) && !syncing) { 280 syncing = 1; 281 vfs_shutdown(); /* sync */ 282 resettodr(); /* set wall clock */ 283 } 284 285 splhigh(); 286 287 if (!cold && (howto & RB_DUMP)) 288 ibm4xx_dumpsys(); 289 290 doshutdownhooks(); 291 292 pmf_system_shutdown(boothowto); 293 294 if ((howto & RB_POWERDOWN) == RB_POWERDOWN) { 295 /* Power off here if we know how...*/ 296 } 297 298 if (howto & RB_HALT) { 299 printf("halted\n\n"); 300 301 #if 0 302 goto reboot; /* XXX for now... */ 303 #endif 304 305 #ifdef DDB 306 printf("dropping to debugger\n"); 307 while(1) 308 Debugger(); 309 #endif 310 } 311 312 printf("rebooting\n\n"); 313 if (what && *what) { 314 if (strlen(what) > sizeof str - 5) 315 printf("boot string too large, ignored\n"); 316 else { 317 strcpy(str, what); 318 ap1 = ap = str + strlen(str); 319 *ap++ = ' '; 320 } 321 } 322 *ap++ = '-'; 323 if (howto & RB_SINGLE) 324 *ap++ = 's'; 325 if (howto & RB_KDB) 326 *ap++ = 'd'; 327 *ap++ = 0; 328 if (ap[-2] == '-') 329 *ap1 = 0; 330 331 /* flush cache for msgbuf */ 332 __syncicache((void *)msgbuf_paddr, round_page(MSGBUFSIZE)); 333 334 #if 0 335 reboot: 336 #endif 337 ppc4xx_reset(); 338 339 printf("ppc4xx_reset() failed!\n"); 340 #ifdef DDB 341 while(1) 342 Debugger(); 343 #else 344 while (1) 345 /* nothing */; 346 #endif 347 } 348 349 /* 350 * Read EEPROM via I2C. We don't use bus_space(9) here. This is MD-part and, 351 * don't support bus_space_unmap() to a space on reserved space? X-< 352 * 353 * XXXX: Also this function assume already initialized for I2C... 354 */ 355 static int 356 read_eeprom(int len, char *buf) 357 { 358 volatile uint8_t *iic0; 359 #define IIC0_READ(r) (*(iic0 + (r))) 360 #define IIC0_WRITE(r, v) (*(iic0 + (r)) = (v)) 361 uint8_t sts; 362 int cnt, i = 0; 363 364 #define I2C_EEPROM_ADDR 0x52 365 366 if ((iic0 = ppc4xx_tlb_mapiodev(AMCC405EX_IIC0_BASE, IIC_NREG)) == NULL) 367 return ENOMEM; /* ??? */ 368 369 /* Clear Stop Complete Bit */ 370 IIC0_WRITE(IIC_STS, IIC_STS_SCMP); 371 /* Check init */ 372 do { 373 /* Get status */ 374 sts = IIC0_READ(IIC_STS); 375 } while ((sts & IIC_STS_PT)); 376 377 IIC0_WRITE(IIC_MDCNTL, 378 IIC0_READ(IIC_MDCNTL) | IIC_MDCNTL_FMDB | IIC_MDCNTL_FSDB); 379 380 /* 7-bit adressing */ 381 IIC0_WRITE(IIC_HMADR, 0); 382 IIC0_WRITE(IIC_LMADR, I2C_EEPROM_ADDR << 1); 383 384 IIC0_WRITE(IIC_MDBUF, 0); 385 IIC0_WRITE(IIC_CNTL, IIC_CNTL_PT); 386 do { 387 /* Get status */ 388 sts = IIC0_READ(IIC_STS); 389 } while ((sts & IIC_STS_PT) && !(sts & IIC_STS_ERR)); 390 391 cnt = 0; 392 while (cnt < len) { 393 /* always read 4byte */ 394 IIC0_WRITE(IIC_CNTL, 395 IIC_CNTL_PT | 396 IIC_CNTL_RW | 397 ((cnt == 0) ? IIC_CNTL_RPST : 0) | 398 IIC_CNTL_TCT); 399 do { 400 /* Get status */ 401 sts = IIC0_READ(IIC_STS); 402 } while ((sts & IIC_STS_PT) && !(sts & IIC_STS_ERR)); 403 404 if ((sts & IIC_STS_PT) || (sts & IIC_STS_ERR)) 405 break; 406 if (sts & IIC_STS_MDBS) { 407 delay(1); 408 /* read 4byte */ 409 for (i = 0; i < 4 && cnt < len; i++, cnt++) 410 buf[cnt] = IIC0_READ(IIC_MDBUF); 411 } 412 } 413 for ( ; i < 4; i++) 414 (void) IIC0_READ(IIC_MDBUF); 415 416 return (cnt == len) ? 0 : EINVAL; 417 } 418
Indexes created Tue Sep 30 17:09:57 GMT 2025