machdep.c revision 1.63
1 /* $NetBSD: machdep.c,v 1.63 2021/03/30 01:16:45 rin 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 1.63 2021/03/30 01:16:45 rin 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 #include <powerpc/ibm4xx/ibm405gp.h> 110 111 #include <powerpc/ibm4xx/pci_machdep.h> 112 113 #include <powerpc/pic/picvar.h> 114 115 #include <dev/cons.h> 116 #include <dev/pci/pcivar.h> 117 #include <dev/pci/pciconf.h> 118 119 #include "ksyms.h" 120 121 #if defined(DDB) 122 #include <powerpc/db_machdep.h> 123 #include <ddb/db_extern.h> 124 #endif 125 126 127 #define TLB_PG_SIZE (16*1024*1024) 128 129 /* 130 * Global variables used here and there 131 */ 132 struct vm_map *phys_map = NULL; 133 134 /* 135 * This should probably be in autoconf! XXX 136 */ 137 char machine[] = MACHINE; /* from <machine/param.h> */ 138 char machine_arch[] = MACHINE_ARCH; /* from <machine/param.h> */ 139 140 void initppc(vaddr_t, vaddr_t, char *, void *); 141 142 static void dumpsys(void); 143 144 struct board_cfg_data board_data; 145 146 void 147 initppc(vaddr_t startkernel, vaddr_t endkernel, char *args, void *info_block) 148 { 149 /* Disable all external interrupts */ 150 mtdcr(DCR_UIC0_BASE + DCR_UIC_ER, 0); 151 152 /* Initialize cache info for memcpy, etc. */ 153 cpu_probe_cache(); 154 155 /* Save info block */ 156 memcpy(&board_data, info_block, sizeof(board_data)); 157 158 ibm40x_memsize_init(board_data.mem_size, startkernel); 159 160 /* Linear map kernel memory */ 161 for (vaddr_t va = 0; va < endkernel; va += TLB_PG_SIZE) { 162 ppc4xx_tlb_reserve(va, va, TLB_PG_SIZE, TLB_EX); 163 } 164 165 /* Map console after physmem (see pmap_tlbmiss()) */ 166 ppc4xx_tlb_reserve(IBM405GP_UART0_BASE, 167 roundup(board_data.mem_size, TLB_PG_SIZE), 168 TLB_PG_SIZE, TLB_I | TLB_G); 169 170 mtspr(SPR_TCR, 0); /* disable all timers */ 171 172 ibm4xx_init(startkernel, endkernel, pic_ext_intr); 173 174 #ifdef DEBUG 175 printf("Board config data:\n"); 176 printf(" usr_config_ver = %s\n", board_data.usr_config_ver); 177 printf(" rom_sw_ver = %s\n", board_data.rom_sw_ver); 178 printf(" mem_size = %u\n", board_data.mem_size); 179 printf(" mac_address_local = %02x:%02x:%02x:%02x:%02x:%02x\n", 180 board_data.mac_address_local[0], board_data.mac_address_local[1], 181 board_data.mac_address_local[2], board_data.mac_address_local[3], 182 board_data.mac_address_local[4], board_data.mac_address_local[5]); 183 printf(" mac_address_pci = %02x:%02x:%02x:%02x:%02x:%02x\n", 184 board_data.mac_address_pci[0], board_data.mac_address_pci[1], 185 board_data.mac_address_pci[2], board_data.mac_address_pci[3], 186 board_data.mac_address_pci[4], board_data.mac_address_pci[5]); 187 printf(" processor_speed = %u\n", board_data.processor_speed); 188 printf(" plb_speed = %u\n", board_data.plb_speed); 189 printf(" pci_speed = %u\n", board_data.pci_speed); 190 #endif 191 192 #ifdef DDB 193 if (boothowto & RB_KDB) 194 Debugger(); 195 #endif 196 197 /* 198 * Look for the ibm4xx modules in the right place. 199 */ 200 module_machine = module_machine_ibm4xx; 201 } 202 203 /* 204 * Machine dependent startup code. 205 */ 206 207 void 208 cpu_startup(void) 209 { 210 prop_number_t pn; 211 prop_data_t pd; 212 213 ibm4xx_cpu_startup("Walnut PowerPC 405GP Evaluation Board"); 214 215 board_info_init(); 216 217 pn = prop_number_create_integer(board_data.mem_size); 218 KASSERT(pn != NULL); 219 if (prop_dictionary_set(board_properties, "mem-size", pn) == false) 220 panic("setting mem-size"); 221 prop_object_release(pn); 222 223 pd = prop_data_create_data_nocopy(board_data.mac_address_local, 224 sizeof(board_data.mac_address_local)); 225 KASSERT(pd != NULL); 226 if (prop_dictionary_set(board_properties, "emac0-mac-addr", 227 pd) == false) 228 panic("setting emac0-mac-addr"); 229 prop_object_release(pd); 230 231 pd = prop_data_create_data_nocopy(board_data.mac_address_pci, 232 sizeof(board_data.mac_address_pci)); 233 KASSERT(pd != NULL); 234 if (prop_dictionary_set(board_properties, "sip0-mac-addr", 235 pd) == false) 236 panic("setting sip0-mac-addr"); 237 prop_object_release(pd); 238 239 pn = prop_number_create_integer(board_data.processor_speed); 240 KASSERT(pn != NULL); 241 if (prop_dictionary_set(board_properties, "processor-frequency", 242 pn) == false) 243 panic("setting processor-frequency"); 244 prop_object_release(pn); 245 246 /* 247 * Now that we have VM, malloc()s are OK in bus_space. 248 */ 249 bus_space_mallocok(); 250 fake_mapiodev = 0; 251 } 252 253 254 static void 255 dumpsys(void) 256 { 257 258 printf("dumpsys: TBD\n"); 259 } 260 261 /* 262 * Halt or reboot the machine after syncing/dumping according to howto. 263 */ 264 void 265 cpu_reboot(int howto, char *what) 266 { 267 static int syncing; 268 static char str[256]; 269 char *ap = str, *ap1 = ap; 270 271 boothowto = howto; 272 if (!cold && !(howto & RB_NOSYNC) && !syncing) { 273 syncing = 1; 274 vfs_shutdown(); /* sync */ 275 resettodr(); /* set wall clock */ 276 } 277 278 splhigh(); 279 280 if (!cold && (howto & RB_DUMP)) 281 dumpsys(); 282 283 doshutdownhooks(); 284 285 pmf_system_shutdown(boothowto); 286 287 if ((howto & RB_POWERDOWN) == RB_POWERDOWN) { 288 /* Power off here if we know how...*/ 289 } 290 291 if (howto & RB_HALT) { 292 printf("halted\n\n"); 293 294 goto reboot; /* XXX for now... */ 295 296 #ifdef DDB 297 printf("dropping to debugger\n"); 298 while(1) 299 Debugger(); 300 #endif 301 } 302 303 printf("rebooting\n\n"); 304 if (what && *what) { 305 if (strlen(what) > sizeof str - 5) 306 printf("boot string too large, ignored\n"); 307 else { 308 strcpy(str, what); 309 ap1 = ap = str + strlen(str); 310 *ap++ = ' '; 311 } 312 } 313 *ap++ = '-'; 314 if (howto & RB_SINGLE) 315 *ap++ = 's'; 316 if (howto & RB_KDB) 317 *ap++ = 'd'; 318 *ap++ = 0; 319 if (ap[-2] == '-') 320 *ap1 = 0; 321 322 /* flush cache for msgbuf */ 323 __syncicache((void *)msgbuf_paddr, round_page(MSGBUFSIZE)); 324 325 reboot: 326 ppc4xx_reset(); 327 328 printf("ppc4xx_reset() failed!\n"); 329 #ifdef DDB 330 while(1) 331 Debugger(); 332 #else 333 while (1) 334 /* nothing */; 335 #endif 336 } 337 338 int 339 ibm4xx_pci_bus_maxdevs(void *v, int busno) 340 { 341 342 /* 343 * Bus number is irrelevant. Configuration Mechanism 1 is in 344 * use, can have devices 0-32 (i.e. the `normal' range). 345 */ 346 return 5; 347 } 348 349 int 350 ibm4xx_pci_intr_map(const struct pci_attach_args *pa, pci_intr_handle_t *ihp) 351 { 352 int pin = pa->pa_intrpin; 353 int dev = pa->pa_device; 354 355 if (pin == 0) 356 /* No IRQ used. */ 357 goto bad; 358 359 if (pin > 4) { 360 printf("%s: bad interrupt pin %d\n", __func__, pin); 361 goto bad; 362 } 363 364 /* 365 * We need to map the interrupt pin to the interrupt bit in the UIC 366 * associated with it. This is highly machine-dependent. 367 */ 368 switch(dev) { 369 case 1: 370 case 2: 371 case 3: 372 case 4: 373 *ihp = 27 + dev; 374 break; 375 default: 376 printf("Hmm.. PCI device %d should not exist on this board\n", 377 dev); 378 goto bad; 379 } 380 return 0; 381 382 bad: 383 *ihp = -1; 384 return 1; 385 } 386 387 void 388 ibm4xx_pci_conf_interrupt(void *v, int bus, int dev, int pin, int swiz, 389 int *iline) 390 { 391 392 if (bus == 0) { 393 switch(dev) { 394 case 1: 395 case 2: 396 case 3: 397 case 4: 398 *iline = 31 - dev; 399 } 400 } else 401 *iline = 20 + ((swiz + dev + 1) & 3); 402 } 403
Indexes created Sun Oct 19 02:09:48 GMT 2025