machdep.c revision 1.55.40.1
1 /* $NetBSD: machdep.c,v 1.55.40.1 2019/06/10 22:06:14 christos Exp $ */ 2 3 /* 4 * Copyright 2001, 2002 Wasabi Systems, Inc. 5 * All rights reserved. 6 * 7 * Written by Eduardo Horvath and Simon Burge for Wasabi Systems, Inc. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed for the NetBSD Project by 20 * Wasabi Systems, Inc. 21 * 4. The name of Wasabi Systems, Inc. may not be used to endorse 22 * or promote products derived from this software without specific prior 23 * written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND 26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 27 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 28 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC 29 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 32 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 33 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 34 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35 * POSSIBILITY OF SUCH DAMAGE. 36 */ 37 38 /* 39 * Copyright (C) 1995, 1996 Wolfgang Solfrank. 40 * Copyright (C) 1995, 1996 TooLs GmbH. 41 * All rights reserved. 42 * 43 * Redistribution and use in source and binary forms, with or without 44 * modification, are permitted provided that the following conditions 45 * are met: 46 * 1. Redistributions of source code must retain the above copyright 47 * notice, this list of conditions and the following disclaimer. 48 * 2. Redistributions in binary form must reproduce the above copyright 49 * notice, this list of conditions and the following disclaimer in the 50 * documentation and/or other materials provided with the distribution. 51 * 3. All advertising materials mentioning features or use of this software 52 * must display the following acknowledgement: 53 * This product includes software developed by TooLs GmbH. 54 * 4. The name of TooLs GmbH may not be used to endorse or promote products 55 * derived from this software without specific prior written permission. 56 * 57 * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR 58 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 59 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 60 * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 61 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 62 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 63 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 64 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 65 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 66 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 67 */ 68 69 #include <sys/cdefs.h> 70 __KERNEL_RCSID(0, "$NetBSD: machdep.c,v 1.55.40.1 2019/06/10 22:06:14 christos Exp $"); 71 72 #include "opt_compat_netbsd.h" 73 #include "opt_ddb.h" 74 75 #include <sys/param.h> 76 #include <sys/boot_flag.h> 77 #include <sys/buf.h> 78 #include <sys/bus.h> 79 #include <sys/cpu.h> 80 #include <sys/device.h> 81 #include <sys/exec.h> 82 #include <sys/kernel.h> 83 #include <sys/ksyms.h> 84 #include <sys/malloc.h> 85 #include <sys/mbuf.h> 86 #include <sys/module.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/syslog.h> 93 #include <sys/systm.h> 94 95 #include <uvm/uvm_extern.h> 96 97 #include <prop/proplib.h> 98 99 #include <machine/powerpc.h> 100 #include <machine/walnut.h> 101 102 #include <powerpc/trap.h> 103 #include <powerpc/pcb.h> 104 105 #include <powerpc/spr.h> 106 #include <powerpc/ibm4xx/spr.h> 107 #include <powerpc/ibm4xx/cpu.h> 108 #include <powerpc/ibm4xx/dcr4xx.h> 109 110 #include <powerpc/ibm4xx/pci_machdep.h> 111 112 #include <powerpc/pic/picvar.h> 113 114 #include <dev/cons.h> 115 #include <dev/pci/pcivar.h> 116 #include <dev/pci/pciconf.h> 117 118 #include "ksyms.h" 119 120 #if defined(DDB) 121 #include <powerpc/db_machdep.h> 122 #include <ddb/db_extern.h> 123 #endif 124 125 126 #define TLB_PG_SIZE (16*1024*1024) 127 128 /* 129 * Global variables used here and there 130 */ 131 struct vm_map *phys_map = NULL; 132 133 /* 134 * This should probably be in autoconf! XXX 135 */ 136 char machine[] = MACHINE; /* from <machine/param.h> */ 137 char machine_arch[] = MACHINE_ARCH; /* from <machine/param.h> */ 138 139 char bootpath[256]; 140 141 void initppc(vaddr_t, vaddr_t, char *, void *); 142 143 static void dumpsys(void); 144 145 #define MEMREGIONS 8 146 struct mem_region physmemr[MEMREGIONS]; /* Hard code memory */ 147 struct mem_region availmemr[MEMREGIONS]; /* Who's supposed to set these up? */ 148 149 struct board_cfg_data board_data; 150 151 void 152 initppc(vaddr_t startkernel, vaddr_t endkernel, char *args, void *info_block) 153 { 154 /* Disable all external interrupts */ 155 mtdcr(DCR_UIC0_BASE + DCR_UIC_ER, 0); 156 157 /* Initialize cache info for memcpy, etc. */ 158 cpu_probe_cache(); 159 160 /* Save info block */ 161 memcpy(&board_data, info_block, sizeof(board_data)); 162 163 memset(physmemr, 0, sizeof physmemr); 164 memset(availmemr, 0, sizeof availmemr); 165 physmemr[0].start = 0; 166 physmemr[0].size = board_data.mem_size & ~PGOFSET; 167 /* Lower memory reserved by eval board BIOS */ 168 availmemr[0].start = startkernel; 169 availmemr[0].size = board_data.mem_size - availmemr[0].start; 170 171 /* Linear map kernel memory */ 172 for (vaddr_t va = 0; va < endkernel; va += TLB_PG_SIZE) { 173 ppc4xx_tlb_reserve(va, va, TLB_PG_SIZE, TLB_EX); 174 } 175 176 /* Map console after physmem (see pmap_tlbmiss()) */ 177 ppc4xx_tlb_reserve(0xef000000, roundup(physmemr[0].size, TLB_PG_SIZE), 178 TLB_PG_SIZE, TLB_I | TLB_G); 179 180 mtspr(SPR_TCR, 0); /* disable all timers */ 181 182 ibm4xx_init(startkernel, endkernel, pic_ext_intr); 183 184 #ifdef DEBUG 185 printf("Board config data:\n"); 186 printf(" usr_config_ver = %s\n", board_data.usr_config_ver); 187 printf(" rom_sw_ver = %s\n", board_data.rom_sw_ver); 188 printf(" mem_size = %u\n", board_data.mem_size); 189 printf(" mac_address_local = %02x:%02x:%02x:%02x:%02x:%02x\n", 190 board_data.mac_address_local[0], board_data.mac_address_local[1], 191 board_data.mac_address_local[2], board_data.mac_address_local[3], 192 board_data.mac_address_local[4], board_data.mac_address_local[5]); 193 printf(" mac_address_pci = %02x:%02x:%02x:%02x:%02x:%02x\n", 194 board_data.mac_address_pci[0], board_data.mac_address_pci[1], 195 board_data.mac_address_pci[2], board_data.mac_address_pci[3], 196 board_data.mac_address_pci[4], board_data.mac_address_pci[5]); 197 printf(" processor_speed = %u\n", board_data.processor_speed); 198 printf(" plb_speed = %u\n", board_data.plb_speed); 199 printf(" pci_speed = %u\n", board_data.pci_speed); 200 #endif 201 202 #ifdef DDB 203 if (boothowto & RB_KDB) 204 Debugger(); 205 #endif 206 207 /* 208 * Look for the ibm4xx modules in the right place. 209 */ 210 module_machine = module_machine_ibm4xx; 211 } 212 213 /* 214 * Machine dependent startup code. 215 */ 216 217 void 218 cpu_startup(void) 219 { 220 vaddr_t minaddr, maxaddr; 221 prop_number_t pn; 222 prop_data_t pd; 223 char pbuf[9]; 224 225 /* 226 * Initialize error message buffer (at end of core). 227 */ 228 #if 0 /* For some reason this fails... --Artem 229 * Besides, do we really have to put it at the end of core? 230 * Let's use static buffer for now 231 */ 232 if (!(msgbuf_vaddr = uvm_km_alloc(kernel_map, round_page(MSGBUFSIZE), 0, 233 UVM_KMF_VAONLY))) 234 panic("startup: no room for message buffer"); 235 for (i = 0; i < btoc(MSGBUFSIZE); i++) 236 pmap_kenter_pa(msgbuf_vaddr + i * PAGE_SIZE, 237 msgbuf_paddr + i * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, 0); 238 initmsgbuf((void *)msgbuf_vaddr, round_page(MSGBUFSIZE)); 239 #else 240 initmsgbuf((void *)msgbuf, round_page(MSGBUFSIZE)); 241 #endif 242 243 printf("%s%s", copyright, version); 244 printf("Walnut PowerPC 405GP Evaluation Board\n"); 245 246 format_bytes(pbuf, sizeof(pbuf), ctob(physmem)); 247 printf("total memory = %s\n", pbuf); 248 249 minaddr = 0; 250 /* 251 * Allocate a submap for physio 252 */ 253 phys_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 254 VM_PHYS_SIZE, 0, false, NULL); 255 256 /* 257 * No need to allocate an mbuf cluster submap. Mbuf clusters 258 * are allocated via the pool allocator, and we use direct-mapped 259 * pool pages. 260 */ 261 262 format_bytes(pbuf, sizeof(pbuf), ptoa(uvmexp.free)); 263 printf("avail memory = %s\n", pbuf); 264 265 /* 266 * Set up the board properties dictionary. 267 */ 268 board_properties = prop_dictionary_create(); 269 KASSERT(board_properties != NULL); 270 271 pn = prop_number_create_integer(board_data.mem_size); 272 KASSERT(pn != NULL); 273 if (prop_dictionary_set(board_properties, "mem-size", pn) == false) 274 panic("setting mem-size"); 275 prop_object_release(pn); 276 277 pd = prop_data_create_data_nocopy(board_data.mac_address_local, 278 sizeof(board_data.mac_address_local)); 279 KASSERT(pd != NULL); 280 if (prop_dictionary_set(board_properties, "emac0-mac-addr", 281 pd) == false) 282 panic("setting emac0-mac-addr"); 283 prop_object_release(pd); 284 285 pd = prop_data_create_data_nocopy(board_data.mac_address_pci, 286 sizeof(board_data.mac_address_pci)); 287 KASSERT(pd != NULL); 288 if (prop_dictionary_set(board_properties, "sip0-mac-addr", 289 pd) == false) 290 panic("setting sip0-mac-addr"); 291 prop_object_release(pd); 292 293 pn = prop_number_create_integer(board_data.processor_speed); 294 KASSERT(pn != NULL); 295 if (prop_dictionary_set(board_properties, "processor-frequency", 296 pn) == false) 297 panic("setting processor-frequency"); 298 prop_object_release(pn); 299 300 /* 301 * Now that we have VM, malloc()s are OK in bus_space. 302 */ 303 bus_space_mallocok(); 304 fake_mapiodev = 0; 305 } 306 307 308 static void 309 dumpsys(void) 310 { 311 312 printf("dumpsys: TBD\n"); 313 } 314 315 /* 316 * Halt or reboot the machine after syncing/dumping according to howto. 317 */ 318 void 319 cpu_reboot(int howto, char *what) 320 { 321 static int syncing; 322 static char str[256]; 323 char *ap = str, *ap1 = ap; 324 325 boothowto = howto; 326 if (!cold && !(howto & RB_NOSYNC) && !syncing) { 327 syncing = 1; 328 vfs_shutdown(); /* sync */ 329 resettodr(); /* set wall clock */ 330 } 331 332 splhigh(); 333 334 if (!cold && (howto & RB_DUMP)) 335 dumpsys(); 336 337 doshutdownhooks(); 338 339 pmf_system_shutdown(boothowto); 340 341 if ((howto & RB_POWERDOWN) == RB_POWERDOWN) { 342 /* Power off here if we know how...*/ 343 } 344 345 if (howto & RB_HALT) { 346 printf("halted\n\n"); 347 348 goto reboot; /* XXX for now... */ 349 350 #ifdef DDB 351 printf("dropping to debugger\n"); 352 while(1) 353 Debugger(); 354 #endif 355 } 356 357 printf("rebooting\n\n"); 358 if (what && *what) { 359 if (strlen(what) > sizeof str - 5) 360 printf("boot string too large, ignored\n"); 361 else { 362 strcpy(str, what); 363 ap1 = ap = str + strlen(str); 364 *ap++ = ' '; 365 } 366 } 367 *ap++ = '-'; 368 if (howto & RB_SINGLE) 369 *ap++ = 's'; 370 if (howto & RB_KDB) 371 *ap++ = 'd'; 372 *ap++ = 0; 373 if (ap[-2] == '-') 374 *ap1 = 0; 375 376 /* flush cache for msgbuf */ 377 __syncicache((void *)msgbuf_paddr, round_page(MSGBUFSIZE)); 378 379 reboot: 380 ppc4xx_reset(); 381 382 printf("ppc4xx_reset() failed!\n"); 383 #ifdef DDB 384 while(1) 385 Debugger(); 386 #else 387 while (1) 388 /* nothing */; 389 #endif 390 } 391 392 void 393 mem_regions(struct mem_region **mem, struct mem_region **avail) 394 { 395 396 *mem = physmemr; 397 *avail = availmemr; 398 } 399 400 401 int 402 ibm4xx_pci_bus_maxdevs(void *v, int busno) 403 { 404 405 /* 406 * Bus number is irrelevant. Configuration Mechanism 1 is in 407 * use, can have devices 0-32 (i.e. the `normal' range). 408 */ 409 return 5; 410 } 411 412 int 413 ibm4xx_pci_intr_map(const struct pci_attach_args *pa, pci_intr_handle_t *ihp) 414 { 415 int pin = pa->pa_intrpin; 416 int dev = pa->pa_device; 417 418 if (pin == 0) 419 /* No IRQ used. */ 420 goto bad; 421 422 if (pin > 4) { 423 printf("%s: bad interrupt pin %d\n", __func__, pin); 424 goto bad; 425 } 426 427 /* 428 * We need to map the interrupt pin to the interrupt bit in the UIC 429 * associated with it. This is highly machine-dependent. 430 */ 431 switch(dev) { 432 case 1: 433 case 2: 434 case 3: 435 case 4: 436 *ihp = 27 + dev; 437 break; 438 default: 439 printf("Hmm.. PCI device %d should not exist on this board\n", 440 dev); 441 goto bad; 442 } 443 return 0; 444 445 bad: 446 *ihp = -1; 447 return 1; 448 } 449 450 void 451 ibm4xx_pci_conf_interrupt(void *v, int bus, int dev, int pin, int swiz, 452 int *iline) 453 { 454 455 if (bus == 0) { 456 switch(dev) { 457 case 1: 458 case 2: 459 case 3: 460 case 4: 461 *iline = 31 - dev; 462 } 463 } else 464 *iline = 20 + ((swiz + dev + 1) & 3); 465 } 466
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