1 /* $NetBSD: machdep.c,v 1.11 2011/06/20 07:18:06 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@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 1.11 2011/06/20 07:18:06 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/bus.h> 78 #include <sys/conf.h> 79 #include <sys/device.h> 80 #include <sys/exec.h> 81 #include <sys/extent.h> 82 #include <sys/intr.h> 83 #include <sys/kernel.h> 84 #include <sys/kgdb.h> 85 #include <sys/ksyms.h> 86 #include <sys/malloc.h> 87 #include <sys/mbuf.h> 88 #include <sys/mount.h> 89 #include <sys/msgbuf.h> 90 #include <sys/proc.h> 91 #include <sys/reboot.h> 92 #include <sys/syscallargs.h> 93 #include <sys/sysctl.h> 94 #include <sys/syslog.h> 95 #include <sys/systm.h> 96 97 #include <uvm/uvm_extern.h> 98 99 #include <machine/powerpc.h> 100 #include <machine/pmppc.h> 101 102 #include <powerpc/db_machdep.h> 103 #include <powerpc/pio.h> 104 #include <powerpc/pmap.h> 105 #include <powerpc/trap.h> 106 107 #include <powerpc/oea/bat.h> 108 #include <powerpc/pic/picvar.h> 109 110 #include <ddb/db_extern.h> 111 112 #include <dev/cons.h> 113 114 #include <dev/ic/cpc700reg.h> 115 #include <dev/ic/cpc700uic.h> 116 117 #include "com.h" 118 #if (NCOM > 0) 119 #include <sys/termios.h> 120 #include <dev/ic/comreg.h> 121 #include <dev/ic/comvar.h> 122 #endif 123 124 #include "ksyms.h" 125 126 struct powerpc_bus_space pmppc_mem_tag = { 127 _BUS_SPACE_LITTLE_ENDIAN|_BUS_SPACE_MEM_TYPE, 128 0, 0, 0xffffffff, 129 NULL, 130 }; 131 struct powerpc_bus_space pmppc_pci_io_tag = { 132 _BUS_SPACE_LITTLE_ENDIAN|_BUS_SPACE_MEM_TYPE, 133 0, CPC_PCI_IO_BASE, 0xffffffff, 134 NULL, 135 }; 136 137 static char ex_storage[1][EXTENT_FIXED_STORAGE_SIZE(8)] 138 __attribute__((aligned(8))); 139 140 141 #ifdef KGDB 142 char kgdb_devname[] = KGDB_DEVNAME; 143 int comkgdbaddr = KGDB_DEVADDR; 144 int comkgdbrate = KGDB_DEVRATE; 145 146 #ifndef KGDB_DEVMODE 147 #define KGDB_DEVMODE ((TTYDEF_CFLAG & ~(CSIZE | CSTOPB | PARENB)) | CS8) /* 8N1 */ 148 #endif 149 int comkgdbmode = KGDB_DEVMODE; 150 151 void kgdb_port_init(void); 152 #endif /* KGDB */ 153 154 /* 155 * Global variables used here and there 156 */ 157 struct mem_region physmemr[2], availmemr[2]; 158 159 struct a_config a_config; 160 161 void initppc(u_int, u_int, u_int, void *); /* Called from locore */ 162 void pmppc_setup(void); 163 void setleds(int leds); 164 165 void 166 initppc(u_int startkernel, u_int endkernel, u_int args, void *btinfo) 167 { 168 extern void consinit(void); 169 extern u_long ticks_per_sec; 170 extern unsigned char edata[], end[]; 171 172 memset(&edata, 0, end - edata); /* clear BSS */ 173 174 pmppc_setup(); 175 176 physmemr[0].start = 0; 177 physmemr[0].size = a_config.a_mem_size; 178 physmemr[1].size = 0; 179 availmemr[0].start = (endkernel + PGOFSET) & ~PGOFSET; 180 availmemr[0].size = a_config.a_mem_size - availmemr[0].start; 181 availmemr[1].size = 0; 182 183 #ifdef BOOTHOWTO 184 /* 185 * boothowto 186 */ 187 boothowto = BOOTHOWTO; 188 #endif 189 190 if (bus_space_init(&pmppc_mem_tag, "iomem", 191 ex_storage[0], sizeof(ex_storage[0]))) 192 panic("bus_space_init failed"); 193 194 /* 195 * Initialize the BAT registers 196 */ 197 oea_batinit( 198 PMPPC_FLASH_BASE, BAT_BL_256M, /* flash (etc) memory 256M area */ 199 CPC_PCI_MEM_BASE, BAT_BL_256M, /* PCI memory 256M area */ 200 CPC_PCI_IO_BASE, BAT_BL_128M, /* PCI I/O 128M area */ 201 0); 202 203 /* 204 * Set up trap vectors 205 */ 206 oea_init(NULL); 207 208 /* 209 * Get CPU clock 210 */ 211 ticks_per_sec = a_config.a_bus_freq; 212 ticks_per_sec /= 4; /* 4 cycles per DEC tick */ 213 cpu_timebase = ticks_per_sec; 214 215 /* 216 * Set up console. 217 */ 218 consinit(); /* XXX should not be here */ 219 220 printf("console set up\n"); 221 222 /* 223 * Set the page size. 224 */ 225 uvm_setpagesize(); 226 227 /* 228 * Initialize pmap module. 229 */ 230 pmap_bootstrap(startkernel, endkernel); 231 232 #ifdef IPKDB 233 /* 234 * Now trap to IPKDB 235 */ 236 ipkdb_init(); 237 if (boothowto & RB_KDB) 238 ipkdb_connect(0); 239 #endif 240 #ifdef KGDB 241 kgdb_port_init(); 242 if (boothowto & RB_KDB) { 243 kgdb_debug_init = 1; 244 kgdb_connect(1); 245 } 246 #endif 247 } 248 249 void 250 mem_regions(struct mem_region **mem, struct mem_region **avail) 251 { 252 *mem = physmemr; 253 *avail = availmemr; 254 } 255 256 /* 257 * Machine dependent startup code. 258 */ 259 void 260 cpu_startup(void) 261 { 262 263 oea_startup(NULL); 264 265 /* 266 * Now that we have VM, malloc()s are OK in bus_space. 267 */ 268 bus_space_mallocok(); 269 270 /* Set up the PCI bus tag. */ 271 if (bus_space_init(&pmppc_pci_io_tag, "pcimem", NULL, 0)) 272 panic("bus_space_init pci failed"); 273 274 /* Set up interrupt controller */ 275 cpc700_init_intr(&pmppc_mem_tag, CPC_UIC_BASE, 276 CPC_INTR_MASK(PMPPC_I_ETH_INT), 0); 277 278 pic_init(); 279 (void)setup_cpc700(); 280 oea_install_extint(pic_ext_intr); 281 282 #if 0 283 /* XXX doesn't seem to be needed anymore */ 284 /* 285 * Now allow hardware interrupts. 286 */ 287 __asm volatile ("mfmsr %0; ori %0,%0,%1; mtmsr %0" 288 : "=r"(msr) : "K"(PSL_EE)); 289 #endif 290 } 291 292 /* 293 * consinit 294 * Initialize system console. 295 */ 296 void 297 consinit(void) 298 { 299 static int initted; 300 #if (NCOM > 0) 301 bus_space_tag_t tag; 302 #endif 303 304 if (initted) 305 return; 306 initted = 1; 307 308 #if (NCOM > 0) 309 tag = &pmppc_mem_tag; 310 311 if(comcnattach(tag, CPC_COM0, 9600, CPC_COM_SPEED(a_config.a_bus_freq), 312 COM_TYPE_NORMAL, 313 ((TTYDEF_CFLAG & ~(CSIZE | CSTOPB | PARENB)) | CS8))) 314 panic("can't init serial console"); 315 else 316 return; 317 #endif 318 319 panic("console device missing -- serial console not in kernel"); 320 /* Of course, this is moot if there is no console... */ 321 } 322 323 #ifdef KGDB 324 void 325 kgdb_port_init(void) 326 { 327 #if (NCOM > 0) 328 if(!strcmp(kgdb_devname, "com")) { 329 bus_space_tag_t tag = &pmppc_mem_tag; 330 com_kgdb_attach(tag, comkgdbaddr, comkgdbrate, 331 CPC_COM_SPEED(a_config.a_bus_freq), 332 COM_TYPE_NORMAL, comkgdbmode); 333 } 334 #endif 335 } 336 #endif 337 338 /* 339 * Halt or reboot the machine after syncing/dumping according to howto. 340 */ 341 void 342 cpu_reboot(int howto, char *what) 343 { 344 static int syncing; 345 static char str[256]; 346 char *ap = str, *ap1 = ap; 347 extern void disable_intr(void); 348 349 boothowto = howto; 350 if (!cold && !(howto & RB_NOSYNC) && !syncing) { 351 syncing = 1; 352 vfs_shutdown(); /* sync */ 353 resettodr(); /* set wall clock */ 354 } 355 splhigh(); 356 if (howto & RB_HALT) { 357 doshutdownhooks(); 358 pmf_system_shutdown(boothowto); 359 printf("halted\n\n"); 360 while(1); 361 } 362 if (!cold && (howto & RB_DUMP)) 363 oea_dumpsys(); 364 doshutdownhooks(); 365 366 pmf_system_shutdown(boothowto); 367 printf("rebooting\n\n"); 368 if (what && *what) { 369 if (strlen(what) > sizeof str - 5) 370 printf("boot string too large, ignored\n"); 371 else { 372 strcpy(str, what); 373 ap1 = ap = str + strlen(str); 374 *ap++ = ' '; 375 } 376 } 377 *ap++ = '-'; 378 if (howto & RB_SINGLE) 379 *ap++ = 's'; 380 if (howto & RB_KDB) 381 *ap++ = 'd'; 382 *ap++ = 0; 383 if (ap[-2] == '-') 384 *ap1 = 0; 385 386 disable_intr(); 387 388 /* Write the two byte reset sequence to the reset register. */ 389 out8(PMPPC_RESET, PMPPC_RESET_SEQ_STEP1); 390 out8(PMPPC_RESET, PMPPC_RESET_SEQ_STEP2); 391 392 while (1); 393 } 394 395 void 396 setleds(int leds) 397 { 398 out8(PMPPC_LEDS, leds); 399 } 400 401 void 402 pmppc_setup(void) 403 { 404 uint config0, config1; 405 406 config0 = in8(PMPPC_CONFIG0); 407 config1 = in8(PMPPC_CONFIG1); 408 409 /* from page 2-8 in the Artesyn User's manual */ 410 a_config.a_boot_device = config1 & 0x80 ? A_BOOT_FLASH : A_BOOT_ROM; 411 a_config.a_has_ecc = (config1 & 0x40) != 0; 412 switch (config1 & 0x30) { 413 case 0x00: a_config.a_mem_size = 32 * 1024 * 1024; break; 414 case 0x10: a_config.a_mem_size = 64 * 1024 * 1024; break; 415 case 0x20: a_config.a_mem_size = 128 * 1024 * 1024; break; 416 case 0x30: a_config.a_mem_size = 256 * 1024 * 1024; break; 417 } 418 a_config.a_l2_cache = (config1 >> 2) & 3; 419 switch (config1 & 0x03) { 420 case 0x00: a_config.a_bus_freq = 66666666; break; 421 case 0x01: a_config.a_bus_freq = 83333333; break; 422 case 0x02: a_config.a_bus_freq = 100000000; break; 423 case 0x03: a_config.a_bus_freq = 0; break; /* XXX */ 424 } 425 a_config.a_is_monarch = (config0 & 0x80) == 0; 426 a_config.a_has_eth = (config0 & 0x20) != 0; 427 a_config.a_has_rtc = (config0 & 0x10) == 0; 428 switch (config0 & 0x0c) { 429 case 0x00: a_config.a_flash_size = 256 * 1024 * 1024; break; 430 case 0x04: a_config.a_flash_size = 128 * 1024 * 1024; break; 431 case 0x08: a_config.a_flash_size = 64 * 1024 * 1024; break; 432 case 0x0c: a_config.a_flash_size = 32 * 1024 * 1024; break; 433 } 434 switch (config0 & 0x03) { 435 case 0x00: a_config.a_flash_width = 64; break; 436 case 0x01: a_config.a_flash_width = 32; break; 437 case 0x02: a_config.a_flash_width = 16; break; 438 case 0x03: a_config.a_flash_width = 0; break; 439 } 440 } 441