machdep.c revision 1.13
1 /* $NetBSD: machdep.c,v 1.13 2016/12/22 14:47:57 cherry 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 1.13 2016/12/22 14:47:57 cherry 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_ns.h" 72 #include "opt_ipkdb.h" 73 74 #include <sys/param.h> 75 #include <sys/buf.h> 76 #include <sys/bus.h> 77 #include <sys/conf.h> 78 #include <sys/device.h> 79 #include <sys/exec.h> 80 #include <sys/extent.h> 81 #include <sys/intr.h> 82 #include <sys/kernel.h> 83 #include <sys/kgdb.h> 84 #include <sys/ksyms.h> 85 #include <sys/malloc.h> 86 #include <sys/mbuf.h> 87 #include <sys/mount.h> 88 #include <sys/msgbuf.h> 89 #include <sys/proc.h> 90 #include <sys/reboot.h> 91 #include <sys/syscallargs.h> 92 #include <sys/sysctl.h> 93 #include <sys/syslog.h> 94 #include <sys/systm.h> 95 96 #include <uvm/uvm_extern.h> 97 98 #include <machine/powerpc.h> 99 #include <machine/pmppc.h> 100 101 #include <powerpc/db_machdep.h> 102 #include <powerpc/pio.h> 103 #include <powerpc/pmap.h> 104 #include <powerpc/trap.h> 105 106 #include <powerpc/oea/bat.h> 107 #include <powerpc/pic/picvar.h> 108 109 #include <ddb/db_extern.h> 110 111 #include <dev/cons.h> 112 113 #include <dev/ic/cpc700reg.h> 114 #include <dev/ic/cpc700uic.h> 115 116 #include "com.h" 117 #if (NCOM > 0) 118 #include <sys/termios.h> 119 #include <dev/ic/comreg.h> 120 #include <dev/ic/comvar.h> 121 #endif 122 123 #include "ksyms.h" 124 125 struct powerpc_bus_space pmppc_mem_tag = { 126 _BUS_SPACE_LITTLE_ENDIAN|_BUS_SPACE_MEM_TYPE, 127 0, 0, 0xffffffff, 128 NULL, 129 }; 130 struct powerpc_bus_space pmppc_pci_io_tag = { 131 _BUS_SPACE_LITTLE_ENDIAN|_BUS_SPACE_MEM_TYPE, 132 0, CPC_PCI_IO_BASE, 0xffffffff, 133 NULL, 134 }; 135 136 static char ex_storage[1][EXTENT_FIXED_STORAGE_SIZE(8)] 137 __attribute__((aligned(8))); 138 139 140 #ifdef KGDB 141 char kgdb_devname[] = KGDB_DEVNAME; 142 int comkgdbaddr = KGDB_DEVADDR; 143 int comkgdbrate = KGDB_DEVRATE; 144 145 #ifndef KGDB_DEVMODE 146 #define KGDB_DEVMODE ((TTYDEF_CFLAG & ~(CSIZE | CSTOPB | PARENB)) | CS8) /* 8N1 */ 147 #endif 148 int comkgdbmode = KGDB_DEVMODE; 149 150 void kgdb_port_init(void); 151 #endif /* KGDB */ 152 153 /* 154 * Global variables used here and there 155 */ 156 struct mem_region physmemr[2], availmemr[2]; 157 158 struct a_config a_config; 159 160 void initppc(u_int, u_int, u_int, void *); /* Called from locore */ 161 void pmppc_setup(void); 162 void setleds(int leds); 163 164 void 165 initppc(u_int startkernel, u_int endkernel, u_int args, void *btinfo) 166 { 167 extern void consinit(void); 168 extern u_long ticks_per_sec; 169 extern unsigned char edata[], end[]; 170 171 memset(&edata, 0, end - edata); /* clear BSS */ 172 173 pmppc_setup(); 174 175 physmemr[0].start = 0; 176 physmemr[0].size = a_config.a_mem_size; 177 physmemr[1].size = 0; 178 availmemr[0].start = (endkernel + PGOFSET) & ~PGOFSET; 179 availmemr[0].size = a_config.a_mem_size - availmemr[0].start; 180 availmemr[1].size = 0; 181 182 #ifdef BOOTHOWTO 183 /* 184 * boothowto 185 */ 186 boothowto = BOOTHOWTO; 187 #endif 188 189 if (bus_space_init(&pmppc_mem_tag, "iomem", 190 ex_storage[0], sizeof(ex_storage[0]))) 191 panic("bus_space_init failed"); 192 193 /* 194 * Initialize the BAT registers 195 */ 196 oea_batinit( 197 PMPPC_FLASH_BASE, BAT_BL_256M, /* flash (etc) memory 256M area */ 198 CPC_PCI_MEM_BASE, BAT_BL_256M, /* PCI memory 256M area */ 199 CPC_PCI_IO_BASE, BAT_BL_128M, /* PCI I/O 128M area */ 200 0); 201 202 /* 203 * Set up trap vectors 204 */ 205 oea_init(NULL); 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; 213 214 /* 215 * Set up console. 216 */ 217 consinit(); /* XXX should not be here */ 218 219 printf("console set up\n"); 220 221 uvm_md_init(); 222 223 /* 224 * Initialize pmap module. 225 */ 226 pmap_bootstrap(startkernel, endkernel); 227 228 #ifdef IPKDB 229 /* 230 * Now trap to IPKDB 231 */ 232 ipkdb_init(); 233 if (boothowto & RB_KDB) 234 ipkdb_connect(0); 235 #endif 236 #ifdef KGDB 237 kgdb_port_init(); 238 if (boothowto & RB_KDB) { 239 kgdb_debug_init = 1; 240 kgdb_connect(1); 241 } 242 #endif 243 } 244 245 void 246 mem_regions(struct mem_region **mem, struct mem_region **avail) 247 { 248 *mem = physmemr; 249 *avail = availmemr; 250 } 251 252 /* 253 * Machine dependent startup code. 254 */ 255 void 256 cpu_startup(void) 257 { 258 259 oea_startup(NULL); 260 261 /* 262 * Now that we have VM, malloc()s are OK in bus_space. 263 */ 264 bus_space_mallocok(); 265 266 /* Set up the PCI bus tag. */ 267 if (bus_space_init(&pmppc_pci_io_tag, "pcimem", NULL, 0)) 268 panic("bus_space_init pci failed"); 269 270 /* Set up interrupt controller */ 271 cpc700_init_intr(&pmppc_mem_tag, CPC_UIC_BASE, 272 CPC_INTR_MASK(PMPPC_I_ETH_INT), 0); 273 274 pic_init(); 275 (void)setup_cpc700(); 276 oea_install_extint(pic_ext_intr); 277 278 #if 0 279 /* XXX doesn't seem to be needed anymore */ 280 /* 281 * Now allow hardware interrupts. 282 */ 283 __asm volatile ("mfmsr %0; ori %0,%0,%1; mtmsr %0" 284 : "=r"(msr) : "K"(PSL_EE)); 285 #endif 286 } 287 288 /* 289 * consinit 290 * Initialize system console. 291 */ 292 void 293 consinit(void) 294 { 295 static int initted; 296 #if (NCOM > 0) 297 bus_space_tag_t tag; 298 #endif 299 300 if (initted) 301 return; 302 initted = 1; 303 304 #if (NCOM > 0) 305 tag = &pmppc_mem_tag; 306 307 if(comcnattach(tag, CPC_COM0, 9600, CPC_COM_SPEED(a_config.a_bus_freq), 308 COM_TYPE_NORMAL, 309 ((TTYDEF_CFLAG & ~(CSIZE | CSTOPB | PARENB)) | CS8))) 310 panic("can't init serial console"); 311 else 312 return; 313 #endif 314 315 panic("console device missing -- serial console not in kernel"); 316 /* Of course, this is moot if there is no console... */ 317 } 318 319 #ifdef KGDB 320 void 321 kgdb_port_init(void) 322 { 323 #if (NCOM > 0) 324 if(!strcmp(kgdb_devname, "com")) { 325 bus_space_tag_t tag = &pmppc_mem_tag; 326 com_kgdb_attach(tag, comkgdbaddr, comkgdbrate, 327 CPC_COM_SPEED(a_config.a_bus_freq), 328 COM_TYPE_NORMAL, comkgdbmode); 329 } 330 #endif 331 } 332 #endif 333 334 /* 335 * Halt or reboot the machine after syncing/dumping according to howto. 336 */ 337 void 338 cpu_reboot(int howto, char *what) 339 { 340 static int syncing; 341 static char str[256]; 342 char *ap = str, *ap1 = ap; 343 extern void disable_intr(void); 344 345 boothowto = howto; 346 if (!cold && !(howto & RB_NOSYNC) && !syncing) { 347 syncing = 1; 348 vfs_shutdown(); /* sync */ 349 resettodr(); /* set wall clock */ 350 } 351 splhigh(); 352 if (howto & RB_HALT) { 353 doshutdownhooks(); 354 pmf_system_shutdown(boothowto); 355 printf("halted\n\n"); 356 while(1); 357 } 358 if (!cold && (howto & RB_DUMP)) 359 oea_dumpsys(); 360 doshutdownhooks(); 361 362 pmf_system_shutdown(boothowto); 363 printf("rebooting\n\n"); 364 if (what && *what) { 365 if (strlen(what) > sizeof str - 5) 366 printf("boot string too large, ignored\n"); 367 else { 368 strcpy(str, what); 369 ap1 = ap = str + strlen(str); 370 *ap++ = ' '; 371 } 372 } 373 *ap++ = '-'; 374 if (howto & RB_SINGLE) 375 *ap++ = 's'; 376 if (howto & RB_KDB) 377 *ap++ = 'd'; 378 *ap++ = 0; 379 if (ap[-2] == '-') 380 *ap1 = 0; 381 382 disable_intr(); 383 384 /* Write the two byte reset sequence to the reset register. */ 385 out8(PMPPC_RESET, PMPPC_RESET_SEQ_STEP1); 386 out8(PMPPC_RESET, PMPPC_RESET_SEQ_STEP2); 387 388 while (1); 389 } 390 391 void 392 setleds(int leds) 393 { 394 out8(PMPPC_LEDS, leds); 395 } 396 397 void 398 pmppc_setup(void) 399 { 400 uint config0, config1; 401 402 config0 = in8(PMPPC_CONFIG0); 403 config1 = in8(PMPPC_CONFIG1); 404 405 /* from page 2-8 in the Artesyn User's manual */ 406 a_config.a_boot_device = config1 & 0x80 ? A_BOOT_FLASH : A_BOOT_ROM; 407 a_config.a_has_ecc = (config1 & 0x40) != 0; 408 switch (config1 & 0x30) { 409 case 0x00: a_config.a_mem_size = 32 * 1024 * 1024; break; 410 case 0x10: a_config.a_mem_size = 64 * 1024 * 1024; break; 411 case 0x20: a_config.a_mem_size = 128 * 1024 * 1024; break; 412 case 0x30: a_config.a_mem_size = 256 * 1024 * 1024; break; 413 } 414 a_config.a_l2_cache = (config1 >> 2) & 3; 415 switch (config1 & 0x03) { 416 case 0x00: a_config.a_bus_freq = 66666666; break; 417 case 0x01: a_config.a_bus_freq = 83333333; break; 418 case 0x02: a_config.a_bus_freq = 100000000; break; 419 case 0x03: a_config.a_bus_freq = 0; break; /* XXX */ 420 } 421 a_config.a_is_monarch = (config0 & 0x80) == 0; 422 a_config.a_has_eth = (config0 & 0x20) != 0; 423 a_config.a_has_rtc = (config0 & 0x10) == 0; 424 switch (config0 & 0x0c) { 425 case 0x00: a_config.a_flash_size = 256 * 1024 * 1024; break; 426 case 0x04: a_config.a_flash_size = 128 * 1024 * 1024; break; 427 case 0x08: a_config.a_flash_size = 64 * 1024 * 1024; break; 428 case 0x0c: a_config.a_flash_size = 32 * 1024 * 1024; break; 429 } 430 switch (config0 & 0x03) { 431 case 0x00: a_config.a_flash_width = 64; break; 432 case 0x01: a_config.a_flash_width = 32; break; 433 case 0x02: a_config.a_flash_width = 16; break; 434 case 0x03: a_config.a_flash_width = 0; break; 435 } 436 } 437
Indexes created Tue Sep 30 20:09:53 GMT 2025