machdep.c revision 1.9
1 /* $NetBSD: machdep.c,v 1.9 2010/12/11 17:12:44 matt 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 1.9 2010/12/11 17:12:44 matt 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 void 168 initppc(u_int startkernel, u_int endkernel, u_int args, void *btinfo) 169 { 170 extern void consinit(void); 171 extern u_long ticks_per_sec; 172 extern unsigned char edata[], end[]; 173 174 memset(&edata, 0, end - edata); /* clear BSS */ 175 176 pmppc_setup(); 177 178 physmemr[0].start = 0; 179 physmemr[0].size = a_config.a_mem_size; 180 physmemr[1].size = 0; 181 availmemr[0].start = (endkernel + PGOFSET) & ~PGOFSET; 182 availmemr[0].size = a_config.a_mem_size - availmemr[0].start; 183 availmemr[1].size = 0; 184 185 #ifdef BOOTHOWTO 186 /* 187 * boothowto 188 */ 189 boothowto = BOOTHOWTO; 190 #endif 191 192 if (bus_space_init(&pmppc_mem_tag, "iomem", 193 ex_storage[0], sizeof(ex_storage[0]))) 194 panic("bus_space_init failed"); 195 196 /* 197 * Initialize the BAT registers 198 */ 199 oea_batinit( 200 PMPPC_FLASH_BASE, BAT_BL_256M, /* flash (etc) memory 256M area */ 201 CPC_PCI_MEM_BASE, BAT_BL_256M, /* PCI memory 256M area */ 202 CPC_PCI_IO_BASE, BAT_BL_128M, /* PCI I/O 128M area */ 203 0); 204 205 /* 206 * Set up trap vectors 207 */ 208 oea_init(NULL); 209 210 /* 211 * Get CPU clock 212 */ 213 ticks_per_sec = a_config.a_bus_freq; 214 ticks_per_sec /= 4; /* 4 cycles per DEC tick */ 215 cpu_timebase = ticks_per_sec; 216 217 /* 218 * Set up console. 219 */ 220 consinit(); /* XXX should not be here */ 221 222 printf("console set up\n"); 223 224 /* 225 * Set the page size. 226 */ 227 uvm_setpagesize(); 228 229 /* 230 * Initialize pmap module. 231 */ 232 pmap_bootstrap(startkernel, endkernel); 233 234 #ifdef IPKDB 235 /* 236 * Now trap to IPKDB 237 */ 238 ipkdb_init(); 239 if (boothowto & RB_KDB) 240 ipkdb_connect(0); 241 #endif 242 #ifdef KGDB 243 kgdb_port_init(); 244 if (boothowto & RB_KDB) { 245 kgdb_debug_init = 1; 246 kgdb_connect(1); 247 } 248 #endif 249 } 250 251 void 252 mem_regions(struct mem_region **mem, struct mem_region **avail) 253 { 254 *mem = physmemr; 255 *avail = availmemr; 256 } 257 258 /* 259 * Machine dependent startup code. 260 */ 261 void 262 cpu_startup(void) 263 { 264 265 oea_startup(NULL); 266 267 /* 268 * Now that we have VM, malloc()s are OK in bus_space. 269 */ 270 bus_space_mallocok(); 271 272 /* Set up the PCI bus tag. */ 273 if (bus_space_init(&pmppc_pci_io_tag, "pcimem", NULL, 0)) 274 panic("bus_space_init pci failed"); 275 276 /* Set up interrupt controller */ 277 cpc700_init_intr(&pmppc_mem_tag, CPC_UIC_BASE, 278 CPC_INTR_MASK(PMPPC_I_ETH_INT), 0); 279 280 pic_init(); 281 (void)setup_cpc700(); 282 oea_install_extint(pic_ext_intr); 283 284 #if 0 285 /* XXX doesn't seem to be needed anymore */ 286 /* 287 * Now allow hardware interrupts. 288 */ 289 __asm volatile ("mfmsr %0; ori %0,%0,%1; mtmsr %0" 290 : "=r"(msr) : "K"(PSL_EE)); 291 #endif 292 } 293 294 /* 295 * consinit 296 * Initialize system console. 297 */ 298 void 299 consinit(void) 300 { 301 static int initted; 302 #if (NCOM > 0) 303 bus_space_tag_t tag; 304 #endif 305 306 if (initted) 307 return; 308 initted = 1; 309 310 #if (NCOM > 0) 311 tag = &pmppc_mem_tag; 312 313 if(comcnattach(tag, CPC_COM0, 9600, CPC_COM_SPEED(a_config.a_bus_freq), 314 COM_TYPE_NORMAL, 315 ((TTYDEF_CFLAG & ~(CSIZE | CSTOPB | PARENB)) | CS8))) 316 panic("can't init serial console"); 317 else 318 return; 319 #endif 320 321 panic("console device missing -- serial console not in kernel"); 322 /* Of course, this is moot if there is no console... */ 323 } 324 325 #ifdef KGDB 326 void 327 kgdb_port_init(void) 328 { 329 #if (NCOM > 0) 330 if(!strcmp(kgdb_devname, "com")) { 331 bus_space_tag_t tag = &pmppc_mem_tag; 332 com_kgdb_attach(tag, comkgdbaddr, comkgdbrate, 333 CPC_COM_SPEED(a_config.a_bus_freq), 334 COM_TYPE_NORMAL, comkgdbmode); 335 } 336 #endif 337 } 338 #endif 339 340 /* 341 * Halt or reboot the machine after syncing/dumping according to howto. 342 */ 343 void 344 cpu_reboot(int howto, char *what) 345 { 346 static int syncing; 347 static char str[256]; 348 char *ap = str, *ap1 = ap; 349 extern void disable_intr(void); 350 351 boothowto = howto; 352 if (!cold && !(howto & RB_NOSYNC) && !syncing) { 353 syncing = 1; 354 vfs_shutdown(); /* sync */ 355 resettodr(); /* set wall clock */ 356 } 357 splhigh(); 358 if (howto & RB_HALT) { 359 doshutdownhooks(); 360 pmf_system_shutdown(boothowto); 361 printf("halted\n\n"); 362 while(1); 363 } 364 if (!cold && (howto & RB_DUMP)) 365 oea_dumpsys(); 366 doshutdownhooks(); 367 368 pmf_system_shutdown(boothowto); 369 printf("rebooting\n\n"); 370 if (what && *what) { 371 if (strlen(what) > sizeof str - 5) 372 printf("boot string too large, ignored\n"); 373 else { 374 strcpy(str, what); 375 ap1 = ap = str + strlen(str); 376 *ap++ = ' '; 377 } 378 } 379 *ap++ = '-'; 380 if (howto & RB_SINGLE) 381 *ap++ = 's'; 382 if (howto & RB_KDB) 383 *ap++ = 'd'; 384 *ap++ = 0; 385 if (ap[-2] == '-') 386 *ap1 = 0; 387 388 disable_intr(); 389 390 /* Write the two byte reset sequence to the reset register. */ 391 out8(PMPPC_RESET, PMPPC_RESET_SEQ_STEP1); 392 out8(PMPPC_RESET, PMPPC_RESET_SEQ_STEP2); 393 394 while (1); 395 } 396 397 void 398 setleds(int leds) 399 { 400 out8(PMPPC_LEDS, leds); 401 } 402 403 void 404 pmppc_setup(void) 405 { 406 uint config0, config1; 407 408 config0 = in8(PMPPC_CONFIG0); 409 config1 = in8(PMPPC_CONFIG1); 410 411 /* from page 2-8 in the Artesyn User's manual */ 412 a_config.a_boot_device = config1 & 0x80 ? A_BOOT_FLASH : A_BOOT_ROM; 413 a_config.a_has_ecc = (config1 & 0x40) != 0; 414 switch (config1 & 0x30) { 415 case 0x00: a_config.a_mem_size = 32 * 1024 * 1024; break; 416 case 0x10: a_config.a_mem_size = 64 * 1024 * 1024; break; 417 case 0x20: a_config.a_mem_size = 128 * 1024 * 1024; break; 418 case 0x30: a_config.a_mem_size = 256 * 1024 * 1024; break; 419 } 420 a_config.a_l2_cache = (config1 >> 2) & 3; 421 switch (config1 & 0x03) { 422 case 0x00: a_config.a_bus_freq = 66666666; break; 423 case 0x01: a_config.a_bus_freq = 83333333; break; 424 case 0x02: a_config.a_bus_freq = 100000000; break; 425 case 0x03: a_config.a_bus_freq = 0; break; /* XXX */ 426 } 427 a_config.a_is_monarch = (config0 & 0x80) == 0; 428 a_config.a_has_eth = (config0 & 0x20) != 0; 429 a_config.a_has_rtc = (config0 & 0x10) == 0; 430 switch (config0 & 0x0c) { 431 case 0x00: a_config.a_flash_size = 256 * 1024 * 1024; break; 432 case 0x04: a_config.a_flash_size = 128 * 1024 * 1024; break; 433 case 0x08: a_config.a_flash_size = 64 * 1024 * 1024; break; 434 case 0x0c: a_config.a_flash_size = 32 * 1024 * 1024; break; 435 } 436 switch (config0 & 0x03) { 437 case 0x00: a_config.a_flash_width = 64; break; 438 case 0x01: a_config.a_flash_width = 32; break; 439 case 0x02: a_config.a_flash_width = 16; break; 440 case 0x03: a_config.a_flash_width = 0; break; 441 } 442 } 443
Indexes created Wed Oct 01 07:09:59 GMT 2025