machdep.c revision 1.2
1 /* $NetBSD: machdep.c,v 1.2 2007/10/17 19:54:18 garbled Exp $ */ 2 3 /* 4 * Copyright (c) 2002 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Lennart Augustsson (lennart (at) augustsson.net) at Sandburst Corp. 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 by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND 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 THE FOUNDATION OR CONTRIBUTORS 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: machdep.c,v 1.2 2007/10/17 19:54:18 garbled Exp $"); 72 73 #include "opt_compat_netbsd.h" 74 #include "opt_ddb.h" 75 #include "opt_ddbparam.h" 76 #include "opt_inet.h" 77 #include "opt_ccitt.h" 78 #include "opt_iso.h" 79 #include "opt_ns.h" 80 #include "opt_ipkdb.h" 81 82 #include <sys/param.h> 83 #include <sys/buf.h> 84 #include <sys/conf.h> 85 #include <sys/device.h> 86 #include <sys/exec.h> 87 #include <sys/extent.h> 88 #include <sys/kernel.h> 89 #include <sys/kgdb.h> 90 #include <sys/malloc.h> 91 #include <sys/mbuf.h> 92 #include <sys/mount.h> 93 #include <sys/msgbuf.h> 94 #include <sys/proc.h> 95 #include <sys/reboot.h> 96 #include <sys/syscallargs.h> 97 #include <sys/syslog.h> 98 #include <sys/sysctl.h> 99 #include <sys/systm.h> 100 #include <sys/user.h> 101 #include <sys/ksyms.h> 102 103 #include <uvm/uvm.h> 104 #include <uvm/uvm_extern.h> 105 106 #include <net/netisr.h> 107 108 #include <machine/bus.h> 109 #include <machine/db_machdep.h> 110 #include <machine/intr.h> 111 #include <machine/pio.h> 112 #include <machine/pmap.h> 113 #include <machine/powerpc.h> 114 #include <machine/trap.h> 115 #include <machine/pmppc.h> 116 117 #include <powerpc/oea/bat.h> 118 #include <arch/powerpc/pic/picvar.h> 119 120 #include <ddb/db_extern.h> 121 122 #include <dev/cons.h> 123 124 #include <dev/ic/cpc700reg.h> 125 #include <dev/ic/cpc700uic.h> 126 127 #include "com.h" 128 #if (NCOM > 0) 129 #include <sys/termios.h> 130 #include <dev/ic/comreg.h> 131 #include <dev/ic/comvar.h> 132 #endif 133 134 #include "ksyms.h" 135 136 struct powerpc_bus_space pmppc_mem_tag = { 137 _BUS_SPACE_LITTLE_ENDIAN|_BUS_SPACE_MEM_TYPE, 138 0, 0, 0xffffffff, 139 NULL, 140 }; 141 struct powerpc_bus_space pmppc_pci_io_tag = { 142 _BUS_SPACE_LITTLE_ENDIAN|_BUS_SPACE_MEM_TYPE, 143 0, CPC_PCI_IO_BASE, 0xffffffff, 144 NULL, 145 }; 146 147 static char ex_storage[1][EXTENT_FIXED_STORAGE_SIZE(8)] 148 __attribute__((aligned(8))); 149 150 151 #ifdef KGDB 152 char kgdb_devname[] = KGDB_DEVNAME; 153 int comkgdbaddr = KGDB_DEVADDR; 154 int comkgdbrate = KGDB_DEVRATE; 155 156 #ifndef KGDB_DEVMODE 157 #define KGDB_DEVMODE ((TTYDEF_CFLAG & ~(CSIZE | CSTOPB | PARENB)) | CS8) /* 8N1 */ 158 #endif 159 int comkgdbmode = KGDB_DEVMODE; 160 161 void kgdb_port_init(void); 162 #endif /* KGDB */ 163 164 /* 165 * Global variables used here and there 166 */ 167 struct mem_region physmemr[2], availmemr[2]; 168 169 struct a_config a_config; 170 171 void initppc(u_int, u_int, u_int, void *); /* Called from locore */ 172 void pmppc_setup(void); 173 void setleds(int leds); 174 175 /* 176 * Force cpu_info to be in the data segment to avoid the 177 * memset() blowing away the data set up by locore.S. 178 */ 179 #if 0 180 /* this is defined in powerpc/oea/cpu_subr.c, I don't understand the above 181 * comment however. 182 */ 183 struct cpu_info cpu_info[1] = { { .ci_curlwp = &lwp0, }, }; 184 #endif 185 186 void 187 initppc(u_int startkernel, u_int endkernel, u_int args, void *btinfo) 188 { 189 extern void consinit(void); 190 extern u_long ticks_per_sec; 191 extern unsigned char edata[], end[]; 192 193 memset(&edata, 0, end - edata); /* clear BSS */ 194 195 pmppc_setup(); 196 197 physmemr[0].start = 0; 198 physmemr[0].size = a_config.a_mem_size; 199 physmemr[1].size = 0; 200 availmemr[0].start = (endkernel + PGOFSET) & ~PGOFSET; 201 availmemr[0].size = a_config.a_mem_size - availmemr[0].start; 202 availmemr[1].size = 0; 203 204 #ifdef BOOTHOWTO 205 /* 206 * boothowto 207 */ 208 boothowto = BOOTHOWTO; 209 #endif 210 211 if (bus_space_init(&pmppc_mem_tag, "iomem", 212 ex_storage[0], sizeof(ex_storage[0]))) 213 panic("bus_space_init failed"); 214 215 /* 216 * Get CPU clock 217 */ 218 ticks_per_sec = a_config.a_bus_freq; 219 ticks_per_sec /= 4; /* 4 cycles per DEC tick */ 220 cpu_timebase = ticks_per_sec; 221 cpu_initclocks(); 222 223 /* 224 * Initialize the BAT registers 225 */ 226 oea_batinit( 227 PMPPC_FLASH_BASE, BAT_BL_256M, /* flash (etc) memory 256M area */ 228 CPC_PCI_MEM_BASE, BAT_BL_256M, /* PCI memory 256M area */ 229 CPC_PCI_IO_BASE, BAT_BL_128M, /* PCI I/O 128M area */ 230 0); 231 232 /* 233 * Set up trap vectors 234 */ 235 oea_init(NULL); 236 237 /* 238 * Set up console. 239 */ 240 consinit(); /* XXX should not be here */ 241 242 printf("console set up\n"); 243 244 /* 245 * Set the page size. 246 */ 247 uvm_setpagesize(); 248 249 /* 250 * Initialize pmap module. 251 */ 252 pmap_bootstrap(startkernel, endkernel); 253 254 #if NKSYMS || defined(DDB) || defined(LKM) 255 #ifdef SYMTAB_SPACE 256 ksyms_init(0, NULL, NULL); 257 #else 258 #error "No SYMTAB_SPACE" 259 #endif 260 #endif 261 #ifdef IPKDB 262 /* 263 * Now trap to IPKDB 264 */ 265 ipkdb_init(); 266 if (boothowto & RB_KDB) 267 ipkdb_connect(0); 268 #endif 269 #ifdef KGDB 270 kgdb_port_init(); 271 if (boothowto & RB_KDB) { 272 kgdb_debug_init = 1; 273 kgdb_connect(1); 274 } 275 #endif 276 } 277 278 void 279 mem_regions(struct mem_region **mem, struct mem_region **avail) 280 { 281 *mem = physmemr; 282 *avail = availmemr; 283 } 284 285 /* 286 * Machine dependent startup code. 287 */ 288 void 289 cpu_startup() 290 { 291 292 oea_startup(NULL); 293 294 /* 295 * Now that we have VM, malloc()s are OK in bus_space. 296 */ 297 bus_space_mallocok(); 298 299 /* Set up the PCI bus tag. */ 300 if (bus_space_init(&pmppc_pci_io_tag, "pcimem", NULL, 0)) 301 panic("bus_space_init pci failed"); 302 303 /* Set up interrupt controller */ 304 cpc700_init_intr(&pmppc_mem_tag, CPC_UIC_BASE, 305 CPC_INTR_MASK(PMPPC_I_ETH_INT), 0); 306 307 pic_init(); 308 (void)setup_cpc700(); 309 oea_install_extint(pic_ext_intr); 310 311 #if 0 312 /* XXX doesn't seem to be needed anymore */ 313 /* 314 * Now allow hardware interrupts. 315 */ 316 __asm volatile ("mfmsr %0; ori %0,%0,%1; mtmsr %0" 317 : "=r"(msr) : "K"(PSL_EE)); 318 #endif 319 } 320 321 /* 322 * consinit 323 * Initialize system console. 324 */ 325 void 326 consinit(void) 327 { 328 static int initted; 329 #if (NCOM > 0) 330 bus_space_tag_t tag; 331 #endif 332 333 if (initted) 334 return; 335 initted = 1; 336 337 #if (NCOM > 0) 338 tag = &pmppc_mem_tag; 339 340 if(comcnattach(tag, CPC_COM0, 9600, CPC_COM_SPEED(a_config.a_bus_freq), 341 COM_TYPE_NORMAL, 342 ((TTYDEF_CFLAG & ~(CSIZE | CSTOPB | PARENB)) | CS8))) 343 panic("can't init serial console"); 344 else 345 return; 346 #endif 347 348 panic("console device missing -- serial console not in kernel"); 349 /* Of course, this is moot if there is no console... */ 350 } 351 352 #ifdef KGDB 353 void 354 kgdb_port_init(void) 355 { 356 #if (NCOM > 0) 357 if(!strcmp(kgdb_devname, "com")) { 358 bus_space_tag_t tag = &pmppc_mem_tag; 359 com_kgdb_attach(tag, comkgdbaddr, comkgdbrate, 360 CPC_COM_SPEED(a_config.a_bus_freq), 361 COM_TYPE_NORMAL, comkgdbmode); 362 } 363 #endif 364 } 365 #endif 366 367 /* 368 * Halt or reboot the machine after syncing/dumping according to howto. 369 */ 370 void 371 cpu_reboot(int howto, char *what) 372 { 373 static int syncing; 374 static char str[256]; 375 char *ap = str, *ap1 = ap; 376 extern void disable_intr(void); 377 378 boothowto = howto; 379 if (!cold && !(howto & RB_NOSYNC) && !syncing) { 380 syncing = 1; 381 vfs_shutdown(); /* sync */ 382 resettodr(); /* set wall clock */ 383 } 384 splhigh(); 385 if (howto & RB_HALT) { 386 doshutdownhooks(); 387 printf("halted\n\n"); 388 while(1); 389 } 390 if (!cold && (howto & RB_DUMP)) 391 oea_dumpsys(); 392 doshutdownhooks(); 393 printf("rebooting\n\n"); 394 if (what && *what) { 395 if (strlen(what) > sizeof str - 5) 396 printf("boot string too large, ignored\n"); 397 else { 398 strcpy(str, what); 399 ap1 = ap = str + strlen(str); 400 *ap++ = ' '; 401 } 402 } 403 *ap++ = '-'; 404 if (howto & RB_SINGLE) 405 *ap++ = 's'; 406 if (howto & RB_KDB) 407 *ap++ = 'd'; 408 *ap++ = 0; 409 if (ap[-2] == '-') 410 *ap1 = 0; 411 412 disable_intr(); 413 414 /* Write the two byte reset sequence to the reset register. */ 415 out8(PMPPC_RESET, PMPPC_RESET_SEQ_STEP1); 416 out8(PMPPC_RESET, PMPPC_RESET_SEQ_STEP2); 417 418 while (1); 419 } 420 421 void 422 setleds(int leds) 423 { 424 out8(PMPPC_LEDS, leds); 425 } 426 427 void 428 pmppc_setup(void) 429 { 430 uint config0, config1; 431 432 config0 = in8(PMPPC_CONFIG0); 433 config1 = in8(PMPPC_CONFIG1); 434 435 /* from page 2-8 in the Artesyn User's manual */ 436 a_config.a_boot_device = config1 & 0x80 ? A_BOOT_FLASH : A_BOOT_ROM; 437 a_config.a_has_ecc = (config1 & 0x40) != 0; 438 switch (config1 & 0x30) { 439 case 0x00: a_config.a_mem_size = 32 * 1024 * 1024; break; 440 case 0x10: a_config.a_mem_size = 64 * 1024 * 1024; break; 441 case 0x20: a_config.a_mem_size = 128 * 1024 * 1024; break; 442 case 0x30: a_config.a_mem_size = 256 * 1024 * 1024; break; 443 } 444 a_config.a_l2_cache = (config1 >> 2) & 3; 445 switch (config1 & 0x03) { 446 case 0x00: a_config.a_bus_freq = 66666666; break; 447 case 0x01: a_config.a_bus_freq = 83333333; break; 448 case 0x02: a_config.a_bus_freq = 100000000; break; 449 case 0x03: a_config.a_bus_freq = 0; break; /* XXX */ 450 } 451 a_config.a_is_monarch = (config0 & 0x80) == 0; 452 a_config.a_has_eth = (config0 & 0x20) != 0; 453 a_config.a_has_rtc = (config0 & 0x10) == 0; 454 switch (config0 & 0x0c) { 455 case 0x00: a_config.a_flash_size = 256 * 1024 * 1024; break; 456 case 0x04: a_config.a_flash_size = 128 * 1024 * 1024; break; 457 case 0x08: a_config.a_flash_size = 64 * 1024 * 1024; break; 458 case 0x0c: a_config.a_flash_size = 32 * 1024 * 1024; break; 459 } 460 switch (config0 & 0x03) { 461 case 0x00: a_config.a_flash_width = 64; break; 462 case 0x01: a_config.a_flash_width = 32; break; 463 case 0x02: a_config.a_flash_width = 16; break; 464 case 0x03: a_config.a_flash_width = 0; break; 465 } 466 } 467
Indexes created Tue Sep 30 20:09:53 GMT 2025