machdep.c revision 1.8
1 /* $NetBSD: machdep.c,v 1.8 2009/11/21 17:40:28 rmind 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 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 /* 33 * Copyright (C) 1995, 1996 Wolfgang Solfrank. 34 * Copyright (C) 1995, 1996 TooLs GmbH. 35 * All rights reserved. 36 * 37 * Redistribution and use in source and binary forms, with or without 38 * modification, are permitted provided that the following conditions 39 * are met: 40 * 1. Redistributions of source code must retain the above copyright 41 * notice, this list of conditions and the following disclaimer. 42 * 2. Redistributions in binary form must reproduce the above copyright 43 * notice, this list of conditions and the following disclaimer in the 44 * documentation and/or other materials provided with the distribution. 45 * 3. All advertising materials mentioning features or use of this software 46 * must display the following acknowledgement: 47 * This product includes software developed by TooLs GmbH. 48 * 4. The name of TooLs GmbH may not be used to endorse or promote products 49 * derived from this software without specific prior written permission. 50 * 51 * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR 52 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 53 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 54 * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 55 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 56 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 57 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 58 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 59 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 60 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 61 */ 62 63 #include <sys/cdefs.h> 64 __KERNEL_RCSID(0, "$NetBSD: machdep.c,v 1.8 2009/11/21 17:40:28 rmind Exp $"); 65 66 #include "opt_compat_netbsd.h" 67 #include "opt_ddb.h" 68 #include "opt_ddbparam.h" 69 #include "opt_inet.h" 70 #include "opt_ccitt.h" 71 #include "opt_iso.h" 72 #include "opt_ns.h" 73 #include "opt_ipkdb.h" 74 75 #include <sys/param.h> 76 #include <sys/buf.h> 77 #include <sys/conf.h> 78 #include <sys/device.h> 79 #include <sys/exec.h> 80 #include <sys/extent.h> 81 #include <sys/kernel.h> 82 #include <sys/kgdb.h> 83 #include <sys/malloc.h> 84 #include <sys/mbuf.h> 85 #include <sys/mount.h> 86 #include <sys/msgbuf.h> 87 #include <sys/proc.h> 88 #include <sys/reboot.h> 89 #include <sys/syscallargs.h> 90 #include <sys/syslog.h> 91 #include <sys/sysctl.h> 92 #include <sys/systm.h> 93 #include <sys/ksyms.h> 94 95 #include <uvm/uvm.h> 96 #include <uvm/uvm_extern.h> 97 98 #include <net/netisr.h> 99 100 #include <machine/bus.h> 101 #include <machine/db_machdep.h> 102 #include <machine/intr.h> 103 #include <machine/pio.h> 104 #include <machine/pmap.h> 105 #include <machine/powerpc.h> 106 #include <machine/trap.h> 107 #include <machine/pmppc.h> 108 109 #include <powerpc/oea/bat.h> 110 #include <arch/powerpc/pic/picvar.h> 111 112 #include <ddb/db_extern.h> 113 114 #include <dev/cons.h> 115 116 #include <dev/ic/cpc700reg.h> 117 #include <dev/ic/cpc700uic.h> 118 119 #include "com.h" 120 #if (NCOM > 0) 121 #include <sys/termios.h> 122 #include <dev/ic/comreg.h> 123 #include <dev/ic/comvar.h> 124 #endif 125 126 #include "ksyms.h" 127 128 struct powerpc_bus_space pmppc_mem_tag = { 129 _BUS_SPACE_LITTLE_ENDIAN|_BUS_SPACE_MEM_TYPE, 130 0, 0, 0xffffffff, 131 NULL, 132 }; 133 struct powerpc_bus_space pmppc_pci_io_tag = { 134 _BUS_SPACE_LITTLE_ENDIAN|_BUS_SPACE_MEM_TYPE, 135 0, CPC_PCI_IO_BASE, 0xffffffff, 136 NULL, 137 }; 138 139 static char ex_storage[1][EXTENT_FIXED_STORAGE_SIZE(8)] 140 __attribute__((aligned(8))); 141 142 143 #ifdef KGDB 144 char kgdb_devname[] = KGDB_DEVNAME; 145 int comkgdbaddr = KGDB_DEVADDR; 146 int comkgdbrate = KGDB_DEVRATE; 147 148 #ifndef KGDB_DEVMODE 149 #define KGDB_DEVMODE ((TTYDEF_CFLAG & ~(CSIZE | CSTOPB | PARENB)) | CS8) /* 8N1 */ 150 #endif 151 int comkgdbmode = KGDB_DEVMODE; 152 153 void kgdb_port_init(void); 154 #endif /* KGDB */ 155 156 /* 157 * Global variables used here and there 158 */ 159 struct mem_region physmemr[2], availmemr[2]; 160 161 struct a_config a_config; 162 163 void initppc(u_int, u_int, u_int, void *); /* Called from locore */ 164 void pmppc_setup(void); 165 void setleds(int leds); 166 167 /* 168 * Force cpu_info to be in the data segment to avoid the 169 * memset() blowing away the data set up by locore.S. 170 */ 171 #if 0 172 /* this is defined in powerpc/oea/cpu_subr.c, I don't understand the above 173 * comment however. 174 */ 175 struct cpu_info cpu_info[1] = { { .ci_curlwp = &lwp0, }, }; 176 #endif 177 178 void 179 initppc(u_int startkernel, u_int endkernel, u_int args, void *btinfo) 180 { 181 extern void consinit(void); 182 extern u_long ticks_per_sec; 183 extern unsigned char edata[], end[]; 184 185 memset(&edata, 0, end - edata); /* clear BSS */ 186 187 pmppc_setup(); 188 189 physmemr[0].start = 0; 190 physmemr[0].size = a_config.a_mem_size; 191 physmemr[1].size = 0; 192 availmemr[0].start = (endkernel + PGOFSET) & ~PGOFSET; 193 availmemr[0].size = a_config.a_mem_size - availmemr[0].start; 194 availmemr[1].size = 0; 195 196 #ifdef BOOTHOWTO 197 /* 198 * boothowto 199 */ 200 boothowto = BOOTHOWTO; 201 #endif 202 203 if (bus_space_init(&pmppc_mem_tag, "iomem", 204 ex_storage[0], sizeof(ex_storage[0]))) 205 panic("bus_space_init failed"); 206 207 /* 208 * Get CPU clock 209 */ 210 ticks_per_sec = a_config.a_bus_freq; 211 ticks_per_sec /= 4; /* 4 cycles per DEC tick */ 212 cpu_timebase = ticks_per_sec; 213 cpu_initclocks(); 214 215 /* 216 * Initialize the BAT registers 217 */ 218 oea_batinit( 219 PMPPC_FLASH_BASE, BAT_BL_256M, /* flash (etc) memory 256M area */ 220 CPC_PCI_MEM_BASE, BAT_BL_256M, /* PCI memory 256M area */ 221 CPC_PCI_IO_BASE, BAT_BL_128M, /* PCI I/O 128M area */ 222 0); 223 224 /* 225 * Set up trap vectors 226 */ 227 oea_init(NULL); 228 229 /* 230 * Set up console. 231 */ 232 consinit(); /* XXX should not be here */ 233 234 printf("console set up\n"); 235 236 /* 237 * Set the page size. 238 */ 239 uvm_setpagesize(); 240 241 /* 242 * Initialize pmap module. 243 */ 244 pmap_bootstrap(startkernel, endkernel); 245 246 #ifdef IPKDB 247 /* 248 * Now trap to IPKDB 249 */ 250 ipkdb_init(); 251 if (boothowto & RB_KDB) 252 ipkdb_connect(0); 253 #endif 254 #ifdef KGDB 255 kgdb_port_init(); 256 if (boothowto & RB_KDB) { 257 kgdb_debug_init = 1; 258 kgdb_connect(1); 259 } 260 #endif 261 } 262 263 void 264 mem_regions(struct mem_region **mem, struct mem_region **avail) 265 { 266 *mem = physmemr; 267 *avail = availmemr; 268 } 269 270 /* 271 * Machine dependent startup code. 272 */ 273 void 274 cpu_startup(void) 275 { 276 277 oea_startup(NULL); 278 279 /* 280 * Now that we have VM, malloc()s are OK in bus_space. 281 */ 282 bus_space_mallocok(); 283 284 /* Set up the PCI bus tag. */ 285 if (bus_space_init(&pmppc_pci_io_tag, "pcimem", NULL, 0)) 286 panic("bus_space_init pci failed"); 287 288 /* Set up interrupt controller */ 289 cpc700_init_intr(&pmppc_mem_tag, CPC_UIC_BASE, 290 CPC_INTR_MASK(PMPPC_I_ETH_INT), 0); 291 292 pic_init(); 293 (void)setup_cpc700(); 294 oea_install_extint(pic_ext_intr); 295 296 #if 0 297 /* XXX doesn't seem to be needed anymore */ 298 /* 299 * Now allow hardware interrupts. 300 */ 301 __asm volatile ("mfmsr %0; ori %0,%0,%1; mtmsr %0" 302 : "=r"(msr) : "K"(PSL_EE)); 303 #endif 304 } 305 306 /* 307 * consinit 308 * Initialize system console. 309 */ 310 void 311 consinit(void) 312 { 313 static int initted; 314 #if (NCOM > 0) 315 bus_space_tag_t tag; 316 #endif 317 318 if (initted) 319 return; 320 initted = 1; 321 322 #if (NCOM > 0) 323 tag = &pmppc_mem_tag; 324 325 if(comcnattach(tag, CPC_COM0, 9600, CPC_COM_SPEED(a_config.a_bus_freq), 326 COM_TYPE_NORMAL, 327 ((TTYDEF_CFLAG & ~(CSIZE | CSTOPB | PARENB)) | CS8))) 328 panic("can't init serial console"); 329 else 330 return; 331 #endif 332 333 panic("console device missing -- serial console not in kernel"); 334 /* Of course, this is moot if there is no console... */ 335 } 336 337 #ifdef KGDB 338 void 339 kgdb_port_init(void) 340 { 341 #if (NCOM > 0) 342 if(!strcmp(kgdb_devname, "com")) { 343 bus_space_tag_t tag = &pmppc_mem_tag; 344 com_kgdb_attach(tag, comkgdbaddr, comkgdbrate, 345 CPC_COM_SPEED(a_config.a_bus_freq), 346 COM_TYPE_NORMAL, comkgdbmode); 347 } 348 #endif 349 } 350 #endif 351 352 /* 353 * Halt or reboot the machine after syncing/dumping according to howto. 354 */ 355 void 356 cpu_reboot(int howto, char *what) 357 { 358 static int syncing; 359 static char str[256]; 360 char *ap = str, *ap1 = ap; 361 extern void disable_intr(void); 362 363 boothowto = howto; 364 if (!cold && !(howto & RB_NOSYNC) && !syncing) { 365 syncing = 1; 366 vfs_shutdown(); /* sync */ 367 resettodr(); /* set wall clock */ 368 } 369 splhigh(); 370 if (howto & RB_HALT) { 371 doshutdownhooks(); 372 pmf_system_shutdown(boothowto); 373 printf("halted\n\n"); 374 while(1); 375 } 376 if (!cold && (howto & RB_DUMP)) 377 oea_dumpsys(); 378 doshutdownhooks(); 379 380 pmf_system_shutdown(boothowto); 381 printf("rebooting\n\n"); 382 if (what && *what) { 383 if (strlen(what) > sizeof str - 5) 384 printf("boot string too large, ignored\n"); 385 else { 386 strcpy(str, what); 387 ap1 = ap = str + strlen(str); 388 *ap++ = ' '; 389 } 390 } 391 *ap++ = '-'; 392 if (howto & RB_SINGLE) 393 *ap++ = 's'; 394 if (howto & RB_KDB) 395 *ap++ = 'd'; 396 *ap++ = 0; 397 if (ap[-2] == '-') 398 *ap1 = 0; 399 400 disable_intr(); 401 402 /* Write the two byte reset sequence to the reset register. */ 403 out8(PMPPC_RESET, PMPPC_RESET_SEQ_STEP1); 404 out8(PMPPC_RESET, PMPPC_RESET_SEQ_STEP2); 405 406 while (1); 407 } 408 409 void 410 setleds(int leds) 411 { 412 out8(PMPPC_LEDS, leds); 413 } 414 415 void 416 pmppc_setup(void) 417 { 418 uint config0, config1; 419 420 config0 = in8(PMPPC_CONFIG0); 421 config1 = in8(PMPPC_CONFIG1); 422 423 /* from page 2-8 in the Artesyn User's manual */ 424 a_config.a_boot_device = config1 & 0x80 ? A_BOOT_FLASH : A_BOOT_ROM; 425 a_config.a_has_ecc = (config1 & 0x40) != 0; 426 switch (config1 & 0x30) { 427 case 0x00: a_config.a_mem_size = 32 * 1024 * 1024; break; 428 case 0x10: a_config.a_mem_size = 64 * 1024 * 1024; break; 429 case 0x20: a_config.a_mem_size = 128 * 1024 * 1024; break; 430 case 0x30: a_config.a_mem_size = 256 * 1024 * 1024; break; 431 } 432 a_config.a_l2_cache = (config1 >> 2) & 3; 433 switch (config1 & 0x03) { 434 case 0x00: a_config.a_bus_freq = 66666666; break; 435 case 0x01: a_config.a_bus_freq = 83333333; break; 436 case 0x02: a_config.a_bus_freq = 100000000; break; 437 case 0x03: a_config.a_bus_freq = 0; break; /* XXX */ 438 } 439 a_config.a_is_monarch = (config0 & 0x80) == 0; 440 a_config.a_has_eth = (config0 & 0x20) != 0; 441 a_config.a_has_rtc = (config0 & 0x10) == 0; 442 switch (config0 & 0x0c) { 443 case 0x00: a_config.a_flash_size = 256 * 1024 * 1024; break; 444 case 0x04: a_config.a_flash_size = 128 * 1024 * 1024; break; 445 case 0x08: a_config.a_flash_size = 64 * 1024 * 1024; break; 446 case 0x0c: a_config.a_flash_size = 32 * 1024 * 1024; break; 447 } 448 switch (config0 & 0x03) { 449 case 0x00: a_config.a_flash_width = 64; break; 450 case 0x01: a_config.a_flash_width = 32; break; 451 case 0x02: a_config.a_flash_width = 16; break; 452 case 0x03: a_config.a_flash_width = 0; break; 453 } 454 } 455
Indexes created Thu Oct 23 22:10:10 GMT 2025