arm32_boot.c revision 1.10
1 /* $NetBSD: arm32_boot.c,v 1.10 2014/11/04 22:37:09 matt Exp $ */ 2 3 /* 4 * Copyright (c) 2002, 2003, 2005 Genetec Corporation. All rights reserved. 5 * Written by Hiroyuki Bessho for Genetec Corporation. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. The name of Genetec Corporation may not be used to endorse or 16 * promote products derived from this software without specific prior 17 * written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY GENETEC CORPORATION ``AS IS'' AND 20 * 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 GENETEC CORPORATION 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 * Copyright (c) 2001 Wasabi Systems, Inc. 32 * All rights reserved. 33 * 34 * Written by Jason R. Thorpe for Wasabi Systems, Inc. 35 * 36 * Redistribution and use in source and binary forms, with or without 37 * modification, are permitted provided that the following conditions 38 * are met: 39 * 1. Redistributions of source code must retain the above copyright 40 * notice, this list of conditions and the following disclaimer. 41 * 2. Redistributions in binary form must reproduce the above copyright 42 * notice, this list of conditions and the following disclaimer in the 43 * documentation and/or other materials provided with the distribution. 44 * 3. All advertising materials mentioning features or use of this software 45 * must display the following acknowledgement: 46 * This product includes software developed for the NetBSD Project by 47 * Wasabi Systems, Inc. 48 * 4. The name of Wasabi Systems, Inc. may not be used to endorse 49 * or promote products derived from this software without specific prior 50 * written permission. 51 * 52 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND 53 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 54 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 55 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC 56 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 57 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 58 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 59 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 60 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 61 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 62 * POSSIBILITY OF SUCH DAMAGE. 63 * 64 * Copyright (c) 1997,1998 Mark Brinicombe. 65 * Copyright (c) 1997,1998 Causality Limited. 66 * All rights reserved. 67 * 68 * Redistribution and use in source and binary forms, with or without 69 * modification, are permitted provided that the following conditions 70 * are met: 71 * 1. Redistributions of source code must retain the above copyright 72 * notice, this list of conditions and the following disclaimer. 73 * 2. Redistributions in binary form must reproduce the above copyright 74 * notice, this list of conditions and the following disclaimer in the 75 * documentation and/or other materials provided with the distribution. 76 * 3. All advertising materials mentioning features or use of this software 77 * must display the following acknowledgement: 78 * This product includes software developed by Mark Brinicombe 79 * for the NetBSD Project. 80 * 4. The name of the company nor the name of the author may be used to 81 * endorse or promote products derived from this software without specific 82 * prior written permission. 83 * 84 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 85 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 86 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 87 * IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, 88 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 89 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 90 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 91 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 92 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 93 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 94 * SUCH DAMAGE. 95 * 96 * Copyright (c) 2007 Microsoft 97 * All rights reserved. 98 * 99 * Redistribution and use in source and binary forms, with or without 100 * modification, are permitted provided that the following conditions 101 * are met: 102 * 1. Redistributions of source code must retain the above copyright 103 * notice, this list of conditions and the following disclaimer. 104 * 2. Redistributions in binary form must reproduce the above copyright 105 * notice, this list of conditions and the following disclaimer in the 106 * documentation and/or other materials provided with the distribution. 107 * 3. All advertising materials mentioning features or use of this software 108 * must display the following acknowledgement: 109 * This product includes software developed by Microsoft 110 * 111 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 112 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 113 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 114 * IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTERS BE LIABLE FOR ANY DIRECT, 115 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 116 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 117 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 118 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 119 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 120 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 121 * SUCH DAMAGE. 122 */ 123 124 #include <sys/cdefs.h> 125 126 __KERNEL_RCSID(1, "$NetBSD: arm32_boot.c,v 1.10 2014/11/04 22:37:09 matt Exp $"); 127 128 #include "opt_ddb.h" 129 #include "opt_kgdb.h" 130 #include "opt_multiprocessor.h" 131 132 #include <sys/param.h> 133 #include <sys/reboot.h> 134 #include <sys/cpu.h> 135 #include <sys/intr.h> 136 #include <sys/atomic.h> 137 #include <sys/device.h> 138 139 #include <uvm/uvm_extern.h> 140 141 #include <arm/locore.h> 142 #include <arm/undefined.h> 143 #include <arm/arm32/machdep.h> 144 145 #include <machine/db_machdep.h> 146 #include <ddb/db_extern.h> 147 148 #include <machine/bootconfig.h> 149 150 #ifdef KGDB 151 #include <sys/kgdb.h> 152 #endif 153 154 vaddr_t 155 initarm_common(vaddr_t kvm_base, vsize_t kvm_size, 156 const struct boot_physmem *bp, size_t nbp) 157 { 158 struct bootmem_info * const bmi = &bootmem_info; 159 160 #ifdef VERBOSE_INIT_ARM 161 printf("nfreeblocks = %u, free_pages = %d (%#x)\n", 162 bmi->bmi_nfreeblocks, bmi->bmi_freepages, 163 bmi->bmi_freepages); 164 #endif 165 166 /* 167 * Moved from cpu_startup() as data_abort_handler() references 168 * this during uvm init. 169 */ 170 uvm_lwp_setuarea(&lwp0, kernelstack.pv_va); 171 172 #ifdef VERBOSE_INIT_ARM 173 printf("bootstrap done.\n"); 174 #endif 175 176 #ifdef VERBOSE_INIT_ARM 177 printf("vectors"); 178 #endif 179 arm32_vector_init(systempage.pv_va, ARM_VEC_ALL); 180 #ifdef VERBOSE_INIT_ARM 181 printf(" %#"PRIxVADDR"\n", vector_page); 182 #endif 183 184 /* 185 * Pages were allocated during the secondary bootstrap for the 186 * stacks for different CPU modes. 187 * We must now set the r13 registers in the different CPU modes to 188 * point to these stacks. 189 * Since the ARM stacks use STMFD etc. we must set r13 to the top end 190 * of the stack memory. 191 */ 192 #ifdef VERBOSE_INIT_ARM 193 printf("init subsystems: stacks "); 194 #endif 195 set_stackptr(PSR_FIQ32_MODE, 196 fiqstack.pv_va + FIQ_STACK_SIZE * PAGE_SIZE); 197 set_stackptr(PSR_IRQ32_MODE, 198 irqstack.pv_va + IRQ_STACK_SIZE * PAGE_SIZE); 199 set_stackptr(PSR_ABT32_MODE, 200 abtstack.pv_va + ABT_STACK_SIZE * PAGE_SIZE); 201 set_stackptr(PSR_UND32_MODE, 202 undstack.pv_va + UND_STACK_SIZE * PAGE_SIZE); 203 204 /* 205 * Well we should set a data abort handler. 206 * Once things get going this will change as we will need a proper 207 * handler. 208 * Until then we will use a handler that just panics but tells us 209 * why. 210 * Initialisation of the vectors will just panic on a data abort. 211 * This just fills in a slightly better one. 212 */ 213 #ifdef VERBOSE_INIT_ARM 214 printf("vectors "); 215 #endif 216 data_abort_handler_address = (u_int)data_abort_handler; 217 prefetch_abort_handler_address = (u_int)prefetch_abort_handler; 218 undefined_handler_address = (u_int)undefinedinstruction_bounce; 219 220 /* Initialise the undefined instruction handlers */ 221 #ifdef VERBOSE_INIT_ARM 222 printf("undefined "); 223 #endif 224 undefined_init(); 225 226 /* Load memory into UVM. */ 227 #ifdef VERBOSE_INIT_ARM 228 printf("page "); 229 #endif 230 uvm_setpagesize(); /* initialize PAGE_SIZE-dependent variables */ 231 232 #ifdef VERBOSE_INIT_ARM 233 printf("pmap_physload "); 234 #endif 235 KASSERT(bp != NULL || nbp == 0); 236 KASSERT(bp == NULL || nbp != 0); 237 238 for (size_t i = 0; i < bmi->bmi_nfreeblocks; i++) { 239 pv_addr_t * const pv = &bmi->bmi_freeblocks[i]; 240 paddr_t start = atop(pv->pv_pa); 241 const paddr_t end = start + atop(pv->pv_size); 242 243 while (start < end) { 244 int vm_freelist = VM_FREELIST_DEFAULT; 245 paddr_t segend = end; 246 /* 247 * This assumes the bp list is sorted in ascending 248 * order. 249 */ 250 for (size_t j = 0; j < nbp; j++) { 251 paddr_t bp_start = bp[j].bp_start; 252 paddr_t bp_end = bp_start + bp[j].bp_pages; 253 if (start < bp_start) { 254 if (segend > bp_start) { 255 segend = bp_start; 256 } 257 break; 258 } 259 if (start < bp_end) { 260 if (segend > bp_end) { 261 segend = bp_end; 262 } 263 vm_freelist = bp[j].bp_freelist; 264 break; 265 } 266 } 267 268 uvm_page_physload(start, segend, start, segend, 269 vm_freelist); 270 start = segend; 271 } 272 } 273 274 /* Boot strap pmap telling it where the kernel page table is */ 275 #ifdef VERBOSE_INIT_ARM 276 printf("pmap "); 277 #endif 278 pmap_bootstrap(kvm_base, kvm_base + kvm_size); 279 280 #ifdef __HAVE_MEMORY_DISK__ 281 md_root_setconf(memory_disk, sizeof memory_disk); 282 #endif 283 284 #ifdef BOOTHOWTO 285 boothowto |= BOOTHOWTO; 286 #endif 287 288 #ifdef KGDB 289 if (boothowto & RB_KDB) { 290 kgdb_debug_init = 1; 291 kgdb_connect(1); 292 } 293 #endif 294 295 #ifdef DDB 296 db_machine_init(); 297 ddb_init(0, NULL, NULL); 298 299 if (boothowto & RB_KDB) 300 Debugger(); 301 #endif 302 303 #ifdef VERBOSE_INIT_ARM 304 printf("done.\n"); 305 #endif 306 307 /* We return the new stack pointer address */ 308 return kernelstack.pv_va + USPACE_SVC_STACK_TOP; 309 } 310 311 #ifdef MULTIPROCESSOR 312 /* 313 * When we are called, the MMU and caches are on and we are running on the stack 314 * of the idlelwp for this cpu. 315 */ 316 void 317 cpu_hatch(struct cpu_info *ci, cpuid_t cpuid, void (*md_cpu_init)(struct cpu_info *)) 318 { 319 KASSERT(cpu_index(ci) == cpuid); 320 321 /* 322 * Raise our IPL to the max 323 */ 324 splhigh(); 325 326 #ifdef VERBOSE_INIT_ARM 327 printf("%s(%s): ", __func__, ci->ci_data.cpu_name); 328 #endif 329 uint32_t mpidr = armreg_mpidr_read(); 330 if (mpidr & MPIDR_MT) { 331 ci->ci_data.cpu_smt_id = mpidr & MPIDR_AFF0; 332 ci->ci_data.cpu_core_id = mpidr & MPIDR_AFF1; 333 ci->ci_data.cpu_package_id = mpidr & MPIDR_AFF2; 334 } else { 335 ci->ci_data.cpu_core_id = mpidr & MPIDR_AFF0; 336 ci->ci_data.cpu_package_id = mpidr & MPIDR_AFF1; 337 } 338 339 /* 340 * Make sure we have the right vector page. 341 */ 342 #ifdef VERBOSE_INIT_ARM 343 printf(" vectors"); 344 #endif 345 arm32_vector_init(systempage.pv_va, ARM_VEC_ALL); 346 347 /* 348 * Initialize the stack for each mode (we are already running on the 349 * SVC32 stack of the idlelwp). 350 */ 351 #ifdef VERBOSE_INIT_ARM 352 printf(" stacks"); 353 #endif 354 set_stackptr(PSR_FIQ32_MODE, 355 fiqstack.pv_va + (cpu_index(ci) + 1) * FIQ_STACK_SIZE * PAGE_SIZE); 356 set_stackptr(PSR_IRQ32_MODE, 357 irqstack.pv_va + (cpu_index(ci) + 1) * IRQ_STACK_SIZE * PAGE_SIZE); 358 set_stackptr(PSR_ABT32_MODE, 359 abtstack.pv_va + (cpu_index(ci) + 1) * ABT_STACK_SIZE * PAGE_SIZE); 360 set_stackptr(PSR_UND32_MODE, 361 undstack.pv_va + (cpu_index(ci) + 1) * UND_STACK_SIZE * PAGE_SIZE); 362 363 ci->ci_lastlwp = NULL; 364 ci->ci_pmap_lastuser = NULL; 365 #ifdef ARM_MMU_EXTENDED 366 #ifdef VERBOSE_INIT_ARM 367 printf(" tlb"); 368 #endif 369 /* 370 * Attach to the tlb. 371 */ 372 ci->ci_pmap_cur = pmap_kernel(); 373 ci->ci_pmap_asid_cur = KERNEL_PID; 374 #endif 375 376 #ifdef CPU_CORTEX 377 if (CPU_ID_CORTEX_P(ci->ci_arm_cpuid)) { 378 /* 379 * Start and reset the PMC Cycle Counter. 380 */ 381 armreg_pmcr_write(ARM11_PMCCTL_E|ARM11_PMCCTL_P|ARM11_PMCCTL_C); 382 armreg_pmcntenset_write(CORTEX_CNTENS_C); 383 } 384 #endif 385 386 aprint_naive("%s", device_xname(ci->ci_dev)); 387 aprint_normal("%s", device_xname(ci->ci_dev)); 388 identify_arm_cpu(ci->ci_dev, ci); 389 #ifdef VERBOSE_INIT_ARM 390 printf(" vfp"); 391 #endif 392 vfp_attach(ci); 393 394 #ifdef VERBOSE_INIT_ARM 395 printf(" interrupts"); 396 #endif 397 /* 398 * Let the interrupts do what they need to on this CPU. 399 */ 400 intr_cpu_init(ci); 401 402 #ifdef VERBOSE_INIT_ARM 403 printf(" md(%p)", md_cpu_init); 404 #endif 405 if (md_cpu_init != NULL) 406 (*md_cpu_init)(ci); 407 408 #ifdef VERBOSE_INIT_ARM 409 printf(" done!\n"); 410 #endif 411 atomic_and_32(&arm_cpu_mbox, ~(1 << cpuid)); 412 membar_producer(); 413 __asm __volatile("sev; sev; sev"); 414 } 415 #endif /* MULTIPROCESSOR */ 416
Indexes created Thu Oct 02 10:09:58 GMT 2025