machdep.c revision 1.2.2.5
1 1.2.2.5 yamt /* $NetBSD: machdep.c,v 1.2.2.5 2006/09/15 13:19:08 yamt Exp $ */ 2 1.2.2.2 yamt 3 1.2.2.2 yamt /* 4 1.2.2.2 yamt * Copyright (c) 2006 Urbana-Champaign Independent Media Center. 5 1.2.2.2 yamt * Copyright (c) 2006 Garrett D'Amore. 6 1.2.2.2 yamt * All rights reserved. 7 1.2.2.2 yamt * 8 1.2.2.2 yamt * Portions of this code were written by Garrett D'Amore for the 9 1.2.2.2 yamt * Champaign-Urbana Community Wireless Network Project. 10 1.2.2.2 yamt * 11 1.2.2.2 yamt * Redistribution and use in source and binary forms, with or 12 1.2.2.2 yamt * without modification, are permitted provided that the following 13 1.2.2.2 yamt * conditions are met: 14 1.2.2.2 yamt * 1. Redistributions of source code must retain the above copyright 15 1.2.2.2 yamt * notice, this list of conditions and the following disclaimer. 16 1.2.2.2 yamt * 2. Redistributions in binary form must reproduce the above 17 1.2.2.2 yamt * copyright notice, this list of conditions and the following 18 1.2.2.2 yamt * disclaimer in the documentation and/or other materials provided 19 1.2.2.2 yamt * with the distribution. 20 1.2.2.2 yamt * 3. All advertising materials mentioning features or use of this 21 1.2.2.2 yamt * software must display the following acknowledgements: 22 1.2.2.2 yamt * This product includes software developed by the Urbana-Champaign 23 1.2.2.2 yamt * Independent Media Center. 24 1.2.2.2 yamt * This product includes software developed by Garrett D'Amore. 25 1.2.2.2 yamt * 4. Urbana-Champaign Independent Media Center's name and Garrett 26 1.2.2.2 yamt * D'Amore's name may not be used to endorse or promote products 27 1.2.2.2 yamt * derived from this software without specific prior written permission. 28 1.2.2.2 yamt * 29 1.2.2.2 yamt * THIS SOFTWARE IS PROVIDED BY THE URBANA-CHAMPAIGN INDEPENDENT 30 1.2.2.2 yamt * MEDIA CENTER AND GARRETT D'AMORE ``AS IS'' AND ANY EXPRESS OR 31 1.2.2.2 yamt * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 32 1.2.2.2 yamt * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 33 1.2.2.2 yamt * ARE DISCLAIMED. IN NO EVENT SHALL THE URBANA-CHAMPAIGN INDEPENDENT 34 1.2.2.2 yamt * MEDIA CENTER OR GARRETT D'AMORE BE LIABLE FOR ANY DIRECT, INDIRECT, 35 1.2.2.2 yamt * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 36 1.2.2.2 yamt * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 37 1.2.2.2 yamt * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 38 1.2.2.2 yamt * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 39 1.2.2.2 yamt * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 40 1.2.2.2 yamt * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 41 1.2.2.2 yamt * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 42 1.2.2.2 yamt */ 43 1.2.2.2 yamt /*- 44 1.2.2.2 yamt * Copyright (c) 2006 Itronix Inc. 45 1.2.2.2 yamt * All rights reserved. 46 1.2.2.2 yamt * 47 1.2.2.2 yamt * Portions written by Garrett D'Amore for Itronix Inc. 48 1.2.2.2 yamt * 49 1.2.2.2 yamt * Redistribution and use in source and binary forms, with or without 50 1.2.2.2 yamt * modification, are permitted provided that the following conditions 51 1.2.2.2 yamt * are met: 52 1.2.2.2 yamt * 1. Redistributions of source code must retain the above copyright 53 1.2.2.2 yamt * notice, this list of conditions and the following disclaimer. 54 1.2.2.2 yamt * 2. Redistributions in binary form must reproduce the above copyright 55 1.2.2.2 yamt * notice, this list of conditions and the following disclaimer in the 56 1.2.2.2 yamt * documentation and/or other materials provided with the distribution. 57 1.2.2.2 yamt * 3. The name of Itronix Inc. may not be used to endorse 58 1.2.2.2 yamt * or promote products derived from this software without specific 59 1.2.2.2 yamt * prior written permission. 60 1.2.2.2 yamt * 61 1.2.2.2 yamt * THIS SOFTWARE IS PROVIDED BY ITRONIX INC. ``AS IS'' AND 62 1.2.2.2 yamt * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 63 1.2.2.2 yamt * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 64 1.2.2.2 yamt * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL ITRONIX INC. BE LIABLE FOR ANY 65 1.2.2.2 yamt * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 66 1.2.2.2 yamt * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 67 1.2.2.2 yamt * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 68 1.2.2.2 yamt * ON ANY THEORY OF LIABILITY, WHETHER IN 69 1.2.2.2 yamt * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 70 1.2.2.2 yamt * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 71 1.2.2.2 yamt * POSSIBILITY OF SUCH DAMAGE. 72 1.2.2.2 yamt */ 73 1.2.2.2 yamt /* 74 1.2.2.2 yamt * Copyright (c) 1992, 1993 75 1.2.2.2 yamt * The Regents of the University of California. All rights reserved. 76 1.2.2.2 yamt * 77 1.2.2.2 yamt * This code is derived from software contributed to Berkeley by 78 1.2.2.2 yamt * the Systems Programming Group of the University of Utah Computer 79 1.2.2.2 yamt * Science Department, The Mach Operating System project at 80 1.2.2.2 yamt * Carnegie-Mellon University and Ralph Campbell. 81 1.2.2.2 yamt * 82 1.2.2.2 yamt * Redistribution and use in source and binary forms, with or without 83 1.2.2.2 yamt * modification, are permitted provided that the following conditions 84 1.2.2.2 yamt * are met: 85 1.2.2.2 yamt * 1. Redistributions of source code must retain the above copyright 86 1.2.2.2 yamt * notice, this list of conditions and the following disclaimer. 87 1.2.2.2 yamt * 2. Redistributions in binary form must reproduce the above copyright 88 1.2.2.2 yamt * notice, this list of conditions and the following disclaimer in the 89 1.2.2.2 yamt * documentation and/or other materials provided with the distribution. 90 1.2.2.2 yamt * 3. Neither the name of the University nor the names of its contributors 91 1.2.2.2 yamt * may be used to endorse or promote products derived from this software 92 1.2.2.2 yamt * without specific prior written permission. 93 1.2.2.2 yamt * 94 1.2.2.2 yamt * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 95 1.2.2.2 yamt * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 96 1.2.2.2 yamt * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 97 1.2.2.2 yamt * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 98 1.2.2.2 yamt * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 99 1.2.2.2 yamt * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 100 1.2.2.2 yamt * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 101 1.2.2.2 yamt * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 102 1.2.2.2 yamt * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 103 1.2.2.2 yamt * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 104 1.2.2.2 yamt * SUCH DAMAGE. 105 1.2.2.2 yamt * 106 1.2.2.2 yamt * @(#)machdep.c 8.3 (Berkeley) 1/12/94 107 1.2.2.2 yamt * from: Utah Hdr: machdep.c 1.63 91/04/24 108 1.2.2.2 yamt */ 109 1.2.2.2 yamt /* 110 1.2.2.2 yamt * Copyright (c) 1988 University of Utah. 111 1.2.2.2 yamt * 112 1.2.2.2 yamt * This code is derived from software contributed to Berkeley by 113 1.2.2.2 yamt * the Systems Programming Group of the University of Utah Computer 114 1.2.2.2 yamt * Science Department, The Mach Operating System project at 115 1.2.2.2 yamt * Carnegie-Mellon University and Ralph Campbell. 116 1.2.2.2 yamt * 117 1.2.2.2 yamt * Redistribution and use in source and binary forms, with or without 118 1.2.2.2 yamt * modification, are permitted provided that the following conditions 119 1.2.2.2 yamt * are met: 120 1.2.2.2 yamt * 1. Redistributions of source code must retain the above copyright 121 1.2.2.2 yamt * notice, this list of conditions and the following disclaimer. 122 1.2.2.2 yamt * 2. Redistributions in binary form must reproduce the above copyright 123 1.2.2.2 yamt * notice, this list of conditions and the following disclaimer in the 124 1.2.2.2 yamt * documentation and/or other materials provided with the distribution. 125 1.2.2.2 yamt * 3. All advertising materials mentioning features or use of this software 126 1.2.2.2 yamt * must display the following acknowledgement: 127 1.2.2.2 yamt * This product includes software developed by the University of 128 1.2.2.2 yamt * California, Berkeley and its contributors. 129 1.2.2.2 yamt * 4. Neither the name of the University nor the names of its contributors 130 1.2.2.2 yamt * may be used to endorse or promote products derived from this software 131 1.2.2.2 yamt * without specific prior written permission. 132 1.2.2.2 yamt * 133 1.2.2.2 yamt * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 134 1.2.2.2 yamt * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 135 1.2.2.2 yamt * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 136 1.2.2.2 yamt * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 137 1.2.2.2 yamt * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 138 1.2.2.2 yamt * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 139 1.2.2.2 yamt * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 140 1.2.2.2 yamt * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 141 1.2.2.2 yamt * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 142 1.2.2.2 yamt * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 143 1.2.2.2 yamt * SUCH DAMAGE. 144 1.2.2.2 yamt * 145 1.2.2.2 yamt * @(#)machdep.c 8.3 (Berkeley) 1/12/94 146 1.2.2.2 yamt * from: Utah Hdr: machdep.c 1.63 91/04/24 147 1.2.2.2 yamt */ 148 1.2.2.2 yamt 149 1.2.2.2 yamt #include <sys/cdefs.h> /* RCS ID & Copyright macro defns */ 150 1.2.2.5 yamt __KERNEL_RCSID(0, "$NetBSD: machdep.c,v 1.2.2.5 2006/09/15 13:19:08 yamt Exp $"); 151 1.2.2.2 yamt 152 1.2.2.2 yamt #include "opt_ddb.h" 153 1.2.2.2 yamt #include "opt_kgdb.h" 154 1.2.2.2 yamt 155 1.2.2.2 yamt #include <sys/param.h> 156 1.2.2.2 yamt #include <sys/systm.h> 157 1.2.2.2 yamt #include <sys/kernel.h> 158 1.2.2.2 yamt #include <sys/buf.h> 159 1.2.2.2 yamt #include <sys/reboot.h> 160 1.2.2.2 yamt #include <sys/user.h> 161 1.2.2.2 yamt #include <sys/mount.h> 162 1.2.2.2 yamt #include <sys/kcore.h> 163 1.2.2.2 yamt #include <sys/boot_flag.h> 164 1.2.2.2 yamt #include <sys/termios.h> 165 1.2.2.2 yamt #include <sys/ksyms.h> 166 1.2.2.2 yamt 167 1.2.2.2 yamt #include <uvm/uvm_extern.h> 168 1.2.2.2 yamt 169 1.2.2.2 yamt #include <dev/cons.h> 170 1.2.2.2 yamt 171 1.2.2.2 yamt #include "ksyms.h" 172 1.2.2.2 yamt 173 1.2.2.2 yamt #if NKSYMS || defined(DDB) || defined(LKM) 174 1.2.2.2 yamt #include <machine/db_machdep.h> 175 1.2.2.2 yamt #include <ddb/db_extern.h> 176 1.2.2.2 yamt #endif 177 1.2.2.2 yamt 178 1.2.2.2 yamt #include <mips/cache.h> 179 1.2.2.2 yamt #include <mips/locore.h> 180 1.2.2.2 yamt #include <mips/cpuregs.h> 181 1.2.2.2 yamt 182 1.2.2.2 yamt #include <mips/atheros/include/ar531xvar.h> 183 1.2.2.2 yamt #include <mips/atheros/include/arbusvar.h> 184 1.2.2.2 yamt 185 1.2.2.2 yamt struct user *proc0paddr; 186 1.2.2.2 yamt 187 1.2.2.2 yamt /* Our exported CPU info; we can have only one. */ 188 1.2.2.2 yamt struct cpu_info cpu_info_store; 189 1.2.2.2 yamt 190 1.2.2.2 yamt /* Maps for VM objects. */ 191 1.2.2.2 yamt struct vm_map *exec_map = NULL; 192 1.2.2.2 yamt struct vm_map *mb_map = NULL; 193 1.2.2.2 yamt struct vm_map *phys_map = NULL; 194 1.2.2.2 yamt 195 1.2.2.2 yamt int physmem; /* # pages of physical memory */ 196 1.2.2.2 yamt int maxmem; /* max memory per process */ 197 1.2.2.2 yamt 198 1.2.2.2 yamt int mem_cluster_cnt; 199 1.2.2.2 yamt phys_ram_seg_t mem_clusters[VM_PHYSSEG_MAX]; 200 1.2.2.2 yamt 201 1.2.2.2 yamt void mach_init(void); /* XXX */ 202 1.2.2.2 yamt 203 1.2.2.4 yamt static void 204 1.2.2.4 yamt cal_timer(void) 205 1.2.2.4 yamt { 206 1.2.2.4 yamt uint32_t cntfreq; 207 1.2.2.2 yamt 208 1.2.2.4 yamt cntfreq = curcpu()->ci_cpu_freq = ar531x_cpu_freq(); 209 1.2.2.4 yamt 210 1.2.2.4 yamt /* MIPS 4Kc CP0 counts every other clock */ 211 1.2.2.4 yamt if (mips_cpu_flags & CPU_MIPS_DOUBLE_COUNT) 212 1.2.2.4 yamt cntfreq /= 2; 213 1.2.2.4 yamt 214 1.2.2.4 yamt curcpu()->ci_cycles_per_hz = (cntfreq + hz / 2) / hz; 215 1.2.2.4 yamt 216 1.2.2.4 yamt /* XXX: i don't understand this logic, it was borrowed from Malta */ 217 1.2.2.4 yamt curcpu()->ci_divisor_delay = ((cntfreq + 500000) / 1000000); 218 1.2.2.4 yamt MIPS_SET_CI_RECIPRICAL(curcpu()); 219 1.2.2.4 yamt } 220 1.2.2.2 yamt 221 1.2.2.2 yamt void 222 1.2.2.2 yamt mach_init(void) 223 1.2.2.2 yamt { 224 1.2.2.2 yamt caddr_t kernend; 225 1.2.2.2 yamt u_long first, last; 226 1.2.2.2 yamt caddr_t v; 227 1.2.2.2 yamt uint32_t memsize; 228 1.2.2.2 yamt 229 1.2.2.2 yamt extern char edata[], end[]; /* XXX */ 230 1.2.2.2 yamt 231 1.2.2.2 yamt /* clear the BSS segment */ 232 1.2.2.2 yamt kernend = (caddr_t)mips_round_page(end); 233 1.2.2.2 yamt 234 1.2.2.2 yamt memset(edata, 0, kernend - (caddr_t)edata); 235 1.2.2.2 yamt 236 1.2.2.2 yamt /* set CPU model info for sysctl_hw */ 237 1.2.2.4 yamt snprintf(cpu_model, 64, "%s", ar531x_cpuname()); 238 1.2.2.2 yamt 239 1.2.2.2 yamt /* 240 1.2.2.2 yamt * Set up the exception vectors and CPU-specific function 241 1.2.2.2 yamt * vectors early on. We need the wbflush() vector set up 242 1.2.2.2 yamt * before comcnattach() is called (or at least before the 243 1.2.2.2 yamt * first printf() after that is called). 244 1.2.2.2 yamt * Sets up mips_cpu_flags that may be queried by other 245 1.2.2.2 yamt * functions called during startup. 246 1.2.2.2 yamt * Also clears the I+D caches. 247 1.2.2.2 yamt */ 248 1.2.2.2 yamt mips_vector_init(); 249 1.2.2.2 yamt 250 1.2.2.2 yamt /* 251 1.2.2.2 yamt * Calibrate timers. 252 1.2.2.2 yamt */ 253 1.2.2.4 yamt cal_timer(); 254 1.2.2.2 yamt 255 1.2.2.2 yamt /* 256 1.2.2.2 yamt * Set the VM page size. 257 1.2.2.2 yamt */ 258 1.2.2.2 yamt uvm_setpagesize(); 259 1.2.2.2 yamt 260 1.2.2.2 yamt /* 261 1.2.2.2 yamt * Look at arguments passed to us and compute boothowto. 262 1.2.2.2 yamt */ 263 1.2.2.2 yamt boothowto = RB_AUTOBOOT; 264 1.2.2.2 yamt #ifdef KADB 265 1.2.2.2 yamt boothowto |= RB_KDB; 266 1.2.2.2 yamt #endif 267 1.2.2.2 yamt 268 1.2.2.2 yamt /* 269 1.2.2.2 yamt * This would be a good place to parse a boot command line, bif 270 1.2.2.2 yamt * we got one from the bootloader. Right now we have no way to 271 1.2.2.2 yamt * get one from e.g. vxworks. 272 1.2.2.2 yamt */ 273 1.2.2.2 yamt 274 1.2.2.2 yamt /* 275 1.2.2.4 yamt * Determine the memory size. 276 1.2.2.2 yamt * 277 1.2.2.2 yamt * Note: Reserve the first page! That's where the trap 278 1.2.2.2 yamt * vectors are located. 279 1.2.2.2 yamt */ 280 1.2.2.4 yamt memsize = ar531x_memsize(); 281 1.2.2.2 yamt 282 1.2.2.2 yamt printf("Memory size: 0x%08x\n", memsize); 283 1.2.2.2 yamt physmem = btoc(memsize); 284 1.2.2.2 yamt 285 1.2.2.2 yamt mem_clusters[mem_cluster_cnt].start = PAGE_SIZE; 286 1.2.2.2 yamt mem_clusters[mem_cluster_cnt].size = 287 1.2.2.2 yamt memsize - mem_clusters[mem_cluster_cnt].start; 288 1.2.2.2 yamt mem_cluster_cnt++; 289 1.2.2.2 yamt 290 1.2.2.2 yamt /* 291 1.2.2.2 yamt * Load the rest of the available pages into the VM system. 292 1.2.2.2 yamt */ 293 1.2.2.2 yamt first = round_page(MIPS_KSEG0_TO_PHYS(kernend)); 294 1.2.2.2 yamt last = mem_clusters[0].start + mem_clusters[0].size; 295 1.2.2.2 yamt uvm_page_physload(atop(first), atop(last), atop(first), atop(last), 296 1.2.2.2 yamt VM_FREELIST_DEFAULT); 297 1.2.2.2 yamt 298 1.2.2.2 yamt /* 299 1.2.2.2 yamt * Initialize message buffer (at end of core). 300 1.2.2.2 yamt */ 301 1.2.2.2 yamt mips_init_msgbuf(); 302 1.2.2.2 yamt 303 1.2.2.2 yamt /* 304 1.2.2.2 yamt * Initialize the virtual memory system. 305 1.2.2.2 yamt */ 306 1.2.2.2 yamt pmap_bootstrap(); 307 1.2.2.2 yamt 308 1.2.2.2 yamt /* 309 1.2.2.2 yamt * Init mapping for u page(s) for proc0. 310 1.2.2.2 yamt */ 311 1.2.2.2 yamt v = (caddr_t) uvm_pageboot_alloc(USPACE); 312 1.2.2.2 yamt lwp0.l_addr = proc0paddr = (struct user *)v; 313 1.2.2.2 yamt lwp0.l_md.md_regs = (struct frame *)(v + USPACE) - 1; 314 1.2.2.2 yamt curpcb = &lwp0.l_addr->u_pcb; 315 1.2.2.2 yamt curpcb->pcb_context[11] = MIPS_INT_MASK | MIPS_SR_INT_IE; /* SR */ 316 1.2.2.2 yamt 317 1.2.2.2 yamt /* 318 1.2.2.4 yamt * Initialize busses. 319 1.2.2.2 yamt */ 320 1.2.2.4 yamt ar531x_businit(); 321 1.2.2.2 yamt 322 1.2.2.2 yamt /* 323 1.2.2.2 yamt * Turn off (ignore) the hardware watchdog. If we got this 324 1.2.2.2 yamt * far, then we shouldn't need it anymore. 325 1.2.2.2 yamt */ 326 1.2.2.4 yamt ar531x_wdog(0); 327 1.2.2.2 yamt 328 1.2.2.2 yamt /* 329 1.2.2.2 yamt * Turn off watchpoint that may have been enabled by the 330 1.2.2.2 yamt * PROM. VxWorks bootloader seems to leave one set. 331 1.2.2.2 yamt */ 332 1.2.2.2 yamt __asm volatile ( 333 1.2.2.2 yamt "mtc0 $0, $" ___STRING(MIPS_COP_0_WATCH_LO) " \n\t" 334 1.2.2.2 yamt "nop\n\t" 335 1.2.2.2 yamt "nop\n\t"); 336 1.2.2.2 yamt 337 1.2.2.2 yamt /* 338 1.2.2.2 yamt * Initialize debuggers, and break into them, if appropriate. 339 1.2.2.2 yamt */ 340 1.2.2.2 yamt #if NKSYMS || defined(DDB) || defined(LKM) 341 1.2.2.2 yamt ksyms_init(0, 0, 0); 342 1.2.2.2 yamt #endif 343 1.2.2.2 yamt 344 1.2.2.2 yamt #ifdef DDB 345 1.2.2.2 yamt if (boothowto & RB_KDB) 346 1.2.2.2 yamt Debugger(); 347 1.2.2.2 yamt #endif 348 1.2.2.2 yamt } 349 1.2.2.2 yamt 350 1.2.2.2 yamt void 351 1.2.2.2 yamt consinit(void) 352 1.2.2.2 yamt { 353 1.2.2.2 yamt 354 1.2.2.2 yamt /* 355 1.2.2.2 yamt * Everything related to console initialization is done 356 1.2.2.2 yamt * in mach_init(). 357 1.2.2.2 yamt */ 358 1.2.2.4 yamt ar531x_consinit(); 359 1.2.2.2 yamt } 360 1.2.2.2 yamt 361 1.2.2.2 yamt void 362 1.2.2.2 yamt cpu_startup(void) 363 1.2.2.2 yamt { 364 1.2.2.2 yamt char pbuf[9]; 365 1.2.2.2 yamt vaddr_t minaddr, maxaddr; 366 1.2.2.2 yamt #ifdef DEBUG 367 1.2.2.2 yamt extern int pmapdebug; /* XXX */ 368 1.2.2.2 yamt int opmapdebug = pmapdebug; 369 1.2.2.2 yamt 370 1.2.2.2 yamt pmapdebug = 0; /* Shut up pmap debug during bootstrap */ 371 1.2.2.2 yamt #endif 372 1.2.2.2 yamt 373 1.2.2.2 yamt /* 374 1.2.2.2 yamt * Good {morning,afternoon,evening,night}. 375 1.2.2.2 yamt */ 376 1.2.2.2 yamt printf("%s%s", copyright, version); 377 1.2.2.2 yamt printf("%s\n", cpu_model); 378 1.2.2.2 yamt format_bytes(pbuf, sizeof(pbuf), ctob(physmem)); 379 1.2.2.2 yamt printf("total memory = %s\n", pbuf); 380 1.2.2.2 yamt 381 1.2.2.2 yamt minaddr = 0; 382 1.2.2.2 yamt /* 383 1.2.2.2 yamt * Allocate a submap for exec arguments. This map effectively 384 1.2.2.2 yamt * limits the number of processes exec'ing at any time. 385 1.2.2.2 yamt */ 386 1.2.2.2 yamt exec_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 387 1.2.2.2 yamt 16 * NCARGS, VM_MAP_PAGEABLE, FALSE, NULL); 388 1.2.2.2 yamt 389 1.2.2.2 yamt /* 390 1.2.2.2 yamt * Allocate a submap for physio 391 1.2.2.2 yamt */ 392 1.2.2.2 yamt phys_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr, 393 1.2.2.2 yamt VM_PHYS_SIZE, 0, FALSE, NULL); 394 1.2.2.2 yamt 395 1.2.2.2 yamt /* 396 1.2.2.2 yamt * No need to allocate an mbuf cluster submap. Mbuf clusters 397 1.2.2.2 yamt * are allocated via the pool allocator, and we use KSEG to 398 1.2.2.2 yamt * map those pages. 399 1.2.2.2 yamt */ 400 1.2.2.2 yamt 401 1.2.2.2 yamt #ifdef DEBUG 402 1.2.2.2 yamt pmapdebug = opmapdebug; 403 1.2.2.2 yamt #endif 404 1.2.2.2 yamt format_bytes(pbuf, sizeof(pbuf), ptoa(uvmexp.free)); 405 1.2.2.2 yamt printf("avail memory = %s\n", pbuf); 406 1.2.2.2 yamt } 407 1.2.2.2 yamt 408 1.2.2.2 yamt void 409 1.2.2.2 yamt cpu_reboot(int howto, char *bootstr) 410 1.2.2.2 yamt { 411 1.2.2.2 yamt static int waittime = -1; 412 1.2.2.2 yamt 413 1.2.2.2 yamt /* Take a snapshot before clobbering any registers. */ 414 1.2.2.2 yamt if (curproc) 415 1.2.2.2 yamt savectx((struct user *)curpcb); 416 1.2.2.2 yamt 417 1.2.2.2 yamt /* If "always halt" was specified as a boot flag, obey. */ 418 1.2.2.2 yamt if (boothowto & RB_HALT) 419 1.2.2.2 yamt howto |= RB_HALT; 420 1.2.2.2 yamt 421 1.2.2.2 yamt boothowto = howto; 422 1.2.2.2 yamt 423 1.2.2.2 yamt /* If system is cold, just halt. */ 424 1.2.2.2 yamt if (cold) { 425 1.2.2.2 yamt boothowto |= RB_HALT; 426 1.2.2.2 yamt goto haltsys; 427 1.2.2.2 yamt } 428 1.2.2.2 yamt 429 1.2.2.2 yamt if ((boothowto & RB_NOSYNC) == 0 && waittime < 0) { 430 1.2.2.2 yamt waittime = 0; 431 1.2.2.2 yamt 432 1.2.2.2 yamt /* 433 1.2.2.2 yamt * Synchronize the disks.... 434 1.2.2.2 yamt */ 435 1.2.2.2 yamt vfs_shutdown(); 436 1.2.2.2 yamt 437 1.2.2.2 yamt /* 438 1.2.2.2 yamt * If we've been adjusting the clock, the todr 439 1.2.2.2 yamt * will be out of synch; adjust it now. 440 1.2.2.2 yamt */ 441 1.2.2.2 yamt resettodr(); 442 1.2.2.2 yamt } 443 1.2.2.2 yamt 444 1.2.2.2 yamt /* Disable interrupts. */ 445 1.2.2.2 yamt splhigh(); 446 1.2.2.2 yamt 447 1.2.2.2 yamt if (boothowto & RB_DUMP) 448 1.2.2.2 yamt dumpsys(); 449 1.2.2.2 yamt 450 1.2.2.2 yamt haltsys: 451 1.2.2.2 yamt /* Run any shutdown hooks. */ 452 1.2.2.2 yamt doshutdownhooks(); 453 1.2.2.2 yamt 454 1.2.2.2 yamt #if 0 455 1.2.2.2 yamt if ((boothowto & RB_POWERDOWN) == RB_POWERDOWN) 456 1.2.2.2 yamt if (board && board->ab_poweroff) 457 1.2.2.2 yamt board->ab_poweroff(); 458 1.2.2.2 yamt #endif 459 1.2.2.2 yamt 460 1.2.2.2 yamt /* 461 1.2.2.2 yamt * Firmware may autoboot (depending on settings), and we cannot pass 462 1.2.2.2 yamt * flags to it (at least I haven't figured out how to yet), so 463 1.2.2.2 yamt * we "pseudo-halt" now. 464 1.2.2.2 yamt */ 465 1.2.2.2 yamt if (boothowto & RB_HALT) { 466 1.2.2.2 yamt printf("\n"); 467 1.2.2.2 yamt printf("The operating system has halted.\n"); 468 1.2.2.2 yamt printf("Please press any key to reboot.\n\n"); 469 1.2.2.2 yamt cnpollc(1); /* For proper keyboard command handling */ 470 1.2.2.2 yamt cngetc(); 471 1.2.2.2 yamt cnpollc(0); 472 1.2.2.2 yamt } 473 1.2.2.2 yamt 474 1.2.2.2 yamt printf("reseting board...\n\n"); 475 1.2.2.2 yamt mips_icache_sync_all(); 476 1.2.2.2 yamt mips_dcache_wbinv_all(); 477 1.2.2.2 yamt __asm volatile("jr %0" :: "r"(MIPS_RESET_EXC_VEC)); 478 1.2.2.2 yamt printf("Oops, back from reset\n\nSpinning..."); 479 1.2.2.2 yamt for (;;) 480 1.2.2.2 yamt /* spin forever */ ; /* XXX */ 481 1.2.2.2 yamt /*NOTREACHED*/ 482 1.2.2.2 yamt } 483
Indexes created Thu Oct 30 16:09:53 GMT 2025