obs600_machdep.c revision 1.10
1 /* $NetBSD: obs600_machdep.c,v 1.10 2018/07/15 05:16:42 maxv 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 1.10 2018/07/15 05:16:42 maxv 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 read_eeprom(sizeof(buf), buf); 210 macaddr = &buf[0]; 211 macaddr1 = &buf[8]; 212 213 /* 214 * Now that we have VM, malloc()s are OK in bus_space. 215 */ 216 bus_space_mallocok(); 217 218 pn = prop_number_create_integer(OBS600_CPU_FREQ); 219 KASSERT(pn != NULL); 220 if (prop_dictionary_set(board_properties, "processor-frequency", pn) == 221 false) 222 panic("setting processor-frequency"); 223 prop_object_release(pn); 224 225 pn = prop_number_create_integer(OBS600_MEM_SIZE); 226 KASSERT(pn != NULL); 227 if (prop_dictionary_set(board_properties, "mem-size", pn) == false) 228 panic("setting mem-size"); 229 prop_object_release(pn); 230 231 #define ETHER_ADDR_LEN 6 232 233 pd = prop_data_create_data_nocopy(macaddr, ETHER_ADDR_LEN); 234 KASSERT(pd != NULL); 235 if (prop_dictionary_set(board_properties, "emac0-mac-addr", pd) == 236 false) 237 panic("setting emac0-mac-addr"); 238 prop_object_release(pd); 239 pd = prop_data_create_data_nocopy(macaddr1, ETHER_ADDR_LEN); 240 KASSERT(pd != NULL); 241 if (prop_dictionary_set(board_properties, "emac1-mac-addr", pd) == 242 false) 243 panic("setting emac1-mac-addr"); 244 prop_object_release(pd); 245 246 /* emac0 connects to phy 2 and emac1 to phy 3 via RGMII. */ 247 pn = prop_number_create_integer(2); 248 KASSERT(pn != NULL); 249 if (prop_dictionary_set(board_properties, "emac0-mii-phy", pn) == false) 250 panic("setting emac0-mii-phy"); 251 prop_object_release(pn); 252 pn = prop_number_create_integer(3); 253 KASSERT(pn != NULL); 254 if (prop_dictionary_set(board_properties, "emac1-mii-phy", pn) == false) 255 panic("setting emac1-mii-phy"); 256 prop_object_release(pn); 257 258 /* 259 * no fake mapiodev 260 */ 261 fake_mapiodev = 0; 262 263 splraise(-1); 264 } 265 266 /* 267 * Halt or reboot the machine after syncing/dumping according to howto. 268 */ 269 void 270 cpu_reboot(int howto, char *what) 271 { 272 static int syncing; 273 static char str[256]; 274 char *ap = str, *ap1 = ap; 275 276 boothowto = howto; 277 if (!cold && !(howto & RB_NOSYNC) && !syncing) { 278 syncing = 1; 279 vfs_shutdown(); /* sync */ 280 resettodr(); /* set wall clock */ 281 } 282 283 splhigh(); 284 285 if (!cold && (howto & RB_DUMP)) 286 ibm4xx_dumpsys(); 287 288 doshutdownhooks(); 289 290 pmf_system_shutdown(boothowto); 291 292 if ((howto & RB_POWERDOWN) == RB_POWERDOWN) { 293 /* Power off here if we know how...*/ 294 } 295 296 if (howto & RB_HALT) { 297 printf("halted\n\n"); 298 299 #if 0 300 goto reboot; /* XXX for now... */ 301 #endif 302 303 #ifdef DDB 304 printf("dropping to debugger\n"); 305 while(1) 306 Debugger(); 307 #endif 308 } 309 310 printf("rebooting\n\n"); 311 if (what && *what) { 312 if (strlen(what) > sizeof str - 5) 313 printf("boot string too large, ignored\n"); 314 else { 315 strcpy(str, what); 316 ap1 = ap = str + strlen(str); 317 *ap++ = ' '; 318 } 319 } 320 *ap++ = '-'; 321 if (howto & RB_SINGLE) 322 *ap++ = 's'; 323 if (howto & RB_KDB) 324 *ap++ = 'd'; 325 *ap++ = 0; 326 if (ap[-2] == '-') 327 *ap1 = 0; 328 329 /* flush cache for msgbuf */ 330 __syncicache((void *)msgbuf_paddr, round_page(MSGBUFSIZE)); 331 332 #if 0 333 reboot: 334 #endif 335 ppc4xx_reset(); 336 337 printf("ppc4xx_reset() failed!\n"); 338 #ifdef DDB 339 while(1) 340 Debugger(); 341 #else 342 while (1) 343 /* nothing */; 344 #endif 345 } 346 347 /* 348 * Read EEPROM via I2C. We don't use bus_space(9) here. This is MD-part and, 349 * don't support bus_space_unmap() to a space on reserved space? X-< 350 * 351 * XXXX: Also this function assume already initialized for I2C... 352 */ 353 static int 354 read_eeprom(int len, char *buf) 355 { 356 volatile uint8_t *iic0; 357 #define IIC0_READ(r) (*(iic0 + (r))) 358 #define IIC0_WRITE(r, v) (*(iic0 + (r)) = (v)) 359 uint8_t sts; 360 int cnt, i = 0; 361 362 #define I2C_EEPROM_ADDR 0x52 363 364 if ((iic0 = ppc4xx_tlb_mapiodev(AMCC405EX_IIC0_BASE, IIC_NREG)) == NULL) 365 return ENOMEM; /* ??? */ 366 367 /* Clear Stop Complete Bit */ 368 IIC0_WRITE(IIC_STS, IIC_STS_SCMP); 369 /* Check init */ 370 do { 371 /* Get status */ 372 sts = IIC0_READ(IIC_STS); 373 } while ((sts & IIC_STS_PT)); 374 375 IIC0_WRITE(IIC_MDCNTL, 376 IIC0_READ(IIC_MDCNTL) | IIC_MDCNTL_FMDB | IIC_MDCNTL_FSDB); 377 378 /* 7-bit adressing */ 379 IIC0_WRITE(IIC_HMADR, 0); 380 IIC0_WRITE(IIC_LMADR, I2C_EEPROM_ADDR << 1); 381 382 IIC0_WRITE(IIC_MDBUF, 0); 383 IIC0_WRITE(IIC_CNTL, IIC_CNTL_PT); 384 do { 385 /* Get status */ 386 sts = IIC0_READ(IIC_STS); 387 } while ((sts & IIC_STS_PT) && !(sts & IIC_STS_ERR)); 388 389 cnt = 0; 390 while (cnt < len) { 391 /* always read 4byte */ 392 IIC0_WRITE(IIC_CNTL, 393 IIC_CNTL_PT | 394 IIC_CNTL_RW | 395 ((cnt == 0) ? IIC_CNTL_RPST : 0) | 396 IIC_CNTL_TCT); 397 do { 398 /* Get status */ 399 sts = IIC0_READ(IIC_STS); 400 } while ((sts & IIC_STS_PT) && !(sts & IIC_STS_ERR)); 401 402 if ((sts & IIC_STS_PT) || (sts & IIC_STS_ERR)) 403 break; 404 if (sts & IIC_STS_MDBS) { 405 delay(1); 406 /* read 4byte */ 407 for (i = 0; i < 4 && cnt < len; i++, cnt++) 408 buf[cnt] = IIC0_READ(IIC_MDBUF); 409 } 410 } 411 for ( ; i < 4; i++) 412 (void) IIC0_READ(IIC_MDBUF); 413 414 return (cnt == len) ? 0 : EINVAL; 415 } 416
Indexes created Thu Oct 23 22:10:10 GMT 2025