1 /* $NetBSD: tsarm_machdep.c,v 1.21 2013/08/18 15:58:21 matt Exp $ */ 2 3 /* 4 * Copyright (c) 2001, 2002, 2003 Wasabi Systems, Inc. 5 * All rights reserved. 6 * 7 * Based on code written by Jason R. Thorpe and Steve C. Woodford for 8 * Wasabi Systems, Inc. 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 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed for the NetBSD Project by 21 * Wasabi Systems, Inc. 22 * 4. The name of Wasabi Systems, Inc. may not be used to endorse 23 * or promote products derived from this software without specific prior 24 * written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND 27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 /* 40 * Copyright (c) 1997,1998 Mark Brinicombe. 41 * Copyright (c) 1997,1998 Causality Limited. 42 * All rights reserved. 43 * 44 * Redistribution and use in source and binary forms, with or without 45 * modification, are permitted provided that the following conditions 46 * are met: 47 * 1. Redistributions of source code must retain the above copyright 48 * notice, this list of conditions and the following disclaimer. 49 * 2. Redistributions in binary form must reproduce the above copyright 50 * notice, this list of conditions and the following disclaimer in the 51 * documentation and/or other materials provided with the distribution. 52 * 3. All advertising materials mentioning features or use of this software 53 * must display the following acknowledgement: 54 * This product includes software developed by Mark Brinicombe 55 * for the NetBSD Project. 56 * 4. The name of the company nor the name of the author may be used to 57 * endorse or promote products derived from this software without specific 58 * prior written permission. 59 * 60 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 61 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 62 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 63 * IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, 64 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 65 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 66 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 67 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 68 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 69 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 70 * SUCH DAMAGE. 71 * 72 * Machine dependent functions for kernel setup for Iyonix. 73 */ 74 75 #include <sys/cdefs.h> 76 __KERNEL_RCSID(0, "$NetBSD: tsarm_machdep.c,v 1.21 2013/08/18 15:58:21 matt Exp $"); 77 78 #include "opt_ddb.h" 79 #include "opt_kgdb.h" 80 #include "opt_pmap_debug.h" 81 82 #include <sys/param.h> 83 #include <sys/device.h> 84 #include <sys/systm.h> 85 #include <sys/kernel.h> 86 #include <sys/exec.h> 87 #include <sys/proc.h> 88 #include <sys/msgbuf.h> 89 #include <sys/reboot.h> 90 #include <sys/termios.h> 91 #include <sys/ksyms.h> 92 #include <sys/bus.h> 93 #include <sys/cpu.h> 94 95 #include <uvm/uvm_extern.h> 96 97 #include <dev/cons.h> 98 99 #include <machine/db_machdep.h> 100 #include <ddb/db_sym.h> 101 #include <ddb/db_extern.h> 102 103 #include <acorn32/include/bootconfig.h> 104 #include <arm/locore.h> 105 #include <arm/undefined.h> 106 107 /* Define various stack sizes in pages */ 108 #define IRQ_STACK_SIZE 8 109 #define ABT_STACK_SIZE 8 110 #define UND_STACK_SIZE 8 111 112 #include <arm/arm32/machdep.h> 113 114 #include <arm/ep93xx/ep93xxreg.h> 115 #include <arm/ep93xx/ep93xxvar.h> 116 117 #include <dev/ic/comreg.h> 118 #include <dev/ic/comvar.h> 119 120 #include "epcom.h" 121 #if NEPCOM > 0 122 #include <arm/ep93xx/epcomvar.h> 123 #endif 124 125 #include "isa.h" 126 #if NISA > 0 127 #include <dev/isa/isareg.h> 128 #include <dev/isa/isavar.h> 129 #endif 130 131 #include <machine/isa_machdep.h> 132 133 #include <evbarm/tsarm/tsarmreg.h> 134 135 #include "ksyms.h" 136 137 /* Kernel text starts 2MB in from the bottom of the kernel address space. */ 138 #define KERNEL_TEXT_BASE (KERNEL_BASE + 0x00200000) 139 #define KERNEL_VM_BASE (KERNEL_BASE + 0x01000000) 140 141 /* 142 * The range 0xc1000000 - 0xccffffff is available for kernel VM space 143 * Core-logic registers and I/O mappings occupy 0xf0000000 - 0xffffffff 144 */ 145 #define KERNEL_VM_SIZE 0x0C000000 146 147 struct bootconfig bootconfig; /* Boot config storage */ 148 char *boot_args = NULL; 149 char *boot_file = NULL; 150 151 vm_offset_t physical_start; 152 vm_offset_t physical_freestart; 153 vm_offset_t physical_freeend; 154 vm_offset_t physical_freeend_low; 155 vm_offset_t physical_end; 156 u_int free_pages; 157 158 vm_offset_t msgbufphys; 159 160 static struct arm32_dma_range tsarm_dma_ranges[4]; 161 162 #if NISA > 0 163 extern void isa_tsarm_init(u_int, u_int); 164 #endif 165 166 #ifdef PMAP_DEBUG 167 extern int pmap_debug_level; 168 #endif 169 170 #define KERNEL_PT_SYS 0 /* L2 table for mapping vectors page */ 171 172 #define KERNEL_PT_KERNEL 1 /* L2 table for mapping kernel */ 173 #define KERNEL_PT_KERNEL_NUM 4 174 /* L2 tables for mapping kernel VM */ 175 #define KERNEL_PT_VMDATA (KERNEL_PT_KERNEL + KERNEL_PT_KERNEL_NUM) 176 177 #define KERNEL_PT_VMDATA_NUM 4 /* start with 16MB of KVM */ 178 #define NUM_KERNEL_PTS (KERNEL_PT_VMDATA + KERNEL_PT_VMDATA_NUM) 179 180 pv_addr_t kernel_pt_table[NUM_KERNEL_PTS]; 181 182 /* Prototypes */ 183 184 void consinit(void); 185 /* 186 * Define the default console speed for the machine. 187 */ 188 #ifndef CONSPEED 189 #define CONSPEED B115200 190 #endif /* ! CONSPEED */ 191 192 #ifndef CONMODE 193 #define CONMODE ((TTYDEF_CFLAG & ~(CSIZE | CSTOPB | PARENB)) | CS8) /* 8N1 */ 194 #endif 195 196 int comcnspeed = CONSPEED; 197 int comcnmode = CONMODE; 198 199 #if KGDB 200 #ifndef KGDB_DEVNAME 201 #error Must define KGDB_DEVNAME 202 #endif 203 const char kgdb_devname[] = KGDB_DEVNAME; 204 205 #ifndef KGDB_DEVADDR 206 #error Must define KGDB_DEVADDR 207 #endif 208 unsigned long kgdb_devaddr = KGDB_DEVADDR; 209 210 #ifndef KGDB_DEVRATE 211 #define KGDB_DEVRATE CONSPEED 212 #endif 213 int kgdb_devrate = KGDB_DEVRATE; 214 215 #ifndef KGDB_DEVMODE 216 #define KGDB_DEVMODE CONMODE 217 #endif 218 int kgdb_devmode = KGDB_DEVMODE; 219 #endif /* KGDB */ 220 221 /* 222 * void cpu_reboot(int howto, char *bootstr) 223 * 224 * Reboots the system 225 * 226 * Deal with any syncing, unmounting, dumping and shutdown hooks, 227 * then reset the CPU. 228 */ 229 void 230 cpu_reboot(int howto, char *bootstr) 231 { 232 233 /* 234 * If we are still cold then hit the air brakes 235 * and crash to earth fast 236 */ 237 if (cold) { 238 doshutdownhooks(); 239 pmf_system_shutdown(boothowto); 240 printf("\r\n"); 241 printf("The operating system has halted.\r\n"); 242 printf("Please press any key to reboot.\r\n"); 243 cngetc(); 244 printf("\r\nrebooting...\r\n"); 245 goto reset; 246 } 247 248 /* Disable console buffering */ 249 250 /* 251 * If RB_NOSYNC was not specified sync the discs. 252 * Note: Unless cold is set to 1 here, syslogd will die during the 253 * unmount. It looks like syslogd is getting woken up only to find 254 * that it cannot page part of the binary in as the filesystem has 255 * been unmounted. 256 */ 257 if (!(howto & RB_NOSYNC)) 258 bootsync(); 259 260 /* Say NO to interrupts */ 261 splhigh(); 262 263 /* Do a dump if requested. */ 264 if ((howto & (RB_DUMP | RB_HALT)) == RB_DUMP) 265 dumpsys(); 266 267 /* Run any shutdown hooks */ 268 doshutdownhooks(); 269 270 pmf_system_shutdown(boothowto); 271 272 /* Make sure IRQ's are disabled */ 273 IRQdisable; 274 275 if (howto & RB_HALT) { 276 printf("\r\n"); 277 printf("The operating system has halted.\r\n"); 278 printf("Please press any key to reboot.\r\n"); 279 cngetc(); 280 } 281 282 printf("\r\nrebooting...\r\n"); 283 reset: 284 /* 285 * Make really really sure that all interrupts are disabled, 286 * and poke the Internal Bus and Peripheral Bus reset lines. 287 */ 288 (void) disable_interrupts(I32_bit|F32_bit); 289 290 { 291 uint32_t feed, ctrl; 292 293 feed = TS7XXX_IO16_VBASE + TS7XXX_WDOGFEED; 294 ctrl = TS7XXX_IO16_VBASE + TS7XXX_WDOGCTRL; 295 296 __asm volatile ( 297 "mov r0, #0x5\n" 298 "mov r1, #0x1\n" 299 "strh r0, [%0]\n" 300 "strh r1, [%1]\n" 301 : 302 : "r" (feed), "r" (ctrl) 303 : "r0", "r1" 304 ); 305 } 306 307 for (;;); 308 } 309 310 /* Static device mappings. */ 311 static const struct pmap_devmap tsarm_devmap[] = { 312 { 313 EP93XX_AHB_VBASE, 314 EP93XX_AHB_HWBASE, 315 EP93XX_AHB_SIZE, 316 VM_PROT_READ|VM_PROT_WRITE, 317 PTE_NOCACHE, 318 }, 319 320 { 321 EP93XX_APB_VBASE, 322 EP93XX_APB_HWBASE, 323 EP93XX_APB_SIZE, 324 VM_PROT_READ|VM_PROT_WRITE, 325 PTE_NOCACHE, 326 }, 327 328 /* 329 * IO8 and IO16 space *must* be mapped contiguously with 330 * IO8_VA == IO16_VA - 64 Mbytes. ISA busmap driver depends 331 * on that! 332 */ 333 { 334 TS7XXX_IO8_VBASE, 335 TS7XXX_IO8_HWBASE, 336 TS7XXX_IO8_SIZE, 337 VM_PROT_READ|VM_PROT_WRITE, 338 PTE_NOCACHE, 339 }, 340 341 { 342 TS7XXX_IO16_VBASE, 343 TS7XXX_IO16_HWBASE, 344 TS7XXX_IO16_SIZE, 345 VM_PROT_READ|VM_PROT_WRITE, 346 PTE_NOCACHE, 347 }, 348 349 { 350 0, 351 0, 352 0, 353 0, 354 0, 355 } 356 }; 357 358 /* 359 * u_int initarm(...) 360 * 361 * Initial entry point on startup. This gets called before main() is 362 * entered. 363 * It should be responsible for setting up everything that must be 364 * in place when main is called. 365 * This includes 366 * Taking a copy of the boot configuration structure. 367 * Initialising the physical console so characters can be printed. 368 * Setting up page tables for the kernel 369 * Initialising interrupt controllers to a sane default state 370 */ 371 u_int 372 initarm(void *arg) 373 { 374 #ifdef FIXME 375 struct bootconfig *passed_bootconfig = arg; 376 extern char _end[]; 377 #endif 378 int loop; 379 int loop1; 380 u_int l1pagetable; 381 paddr_t memstart; 382 psize_t memsize; 383 384 #ifdef FIXME 385 /* Calibrate the delay loop. */ 386 i80321_calibrate_delay(); 387 #endif 388 389 /* 390 * Since we map the on-board devices VA==PA, and the kernel 391 * is running VA==PA, it's possible for us to initialize 392 * the console now. 393 */ 394 consinit(); 395 396 #ifdef VERBOSE_INIT_ARM 397 /* Talk to the user */ 398 printf("\nNetBSD/tsarm booting ...\n"); 399 #endif 400 401 /* 402 * Heads up ... Setup the CPU / MMU / TLB functions 403 */ 404 if (set_cpufuncs()) 405 panic("cpu not recognized!"); 406 407 /* 408 * We are currently running with the MMU enabled 409 */ 410 411 #ifdef FIXME 412 /* 413 * Fetch the SDRAM start/size from the i80321 SDRAM configuration 414 * registers. 415 */ 416 i80321_sdram_bounds(&obio_bs_tag, VERDE_PMMR_BASE + VERDE_MCU_BASE, 417 &memstart, &memsize); 418 #else 419 memstart = 0x0; 420 memsize = 0x2000000; 421 #endif 422 423 #ifdef VERBOSE_INIT_ARM 424 printf("initarm: Configuring system ...\n"); 425 #endif 426 427 /* Fake bootconfig structure for the benefit of pmap.c */ 428 /* XXX must make the memory description h/w independent */ 429 bootconfig.dramblocks = 4; 430 bootconfig.dram[0].address = 0x0UL; 431 bootconfig.dram[0].pages = 0x800000UL / PAGE_SIZE; 432 bootconfig.dram[1].address = 0x1000000UL; 433 bootconfig.dram[1].pages = 0x800000UL / PAGE_SIZE; 434 bootconfig.dram[2].address = 0x4000000UL; 435 bootconfig.dram[2].pages = 0x800000UL / PAGE_SIZE; 436 bootconfig.dram[3].address = 0x5000000UL; 437 bootconfig.dram[3].pages = 0x800000UL / PAGE_SIZE; 438 439 /* 440 * Set up the variables that define the availablilty of 441 * physical memory. For now, we're going to set 442 * physical_freestart to 0x00200000 (where the kernel 443 * was loaded), and allocate the memory we need downwards. 444 * If we get too close to the L1 table that we set up, we 445 * will panic. We will update physical_freestart and 446 * physical_freeend later to reflect what pmap_bootstrap() 447 * wants to see. 448 * 449 * XXX pmap_bootstrap() needs an enema. 450 */ 451 physical_start = bootconfig.dram[0].address; 452 physical_end = bootconfig.dram[0].address + 453 (bootconfig.dram[0].pages * PAGE_SIZE); 454 455 physical_freestart = 0x00009000UL; 456 physical_freeend = 0x00200000UL; 457 458 physmem = (physical_end - physical_start) / PAGE_SIZE; 459 460 #ifdef VERBOSE_INIT_ARM 461 /* Tell the user about the memory */ 462 printf("physmemory: %d pages at 0x%08lx -> 0x%08lx\n", physmem, 463 physical_start, physical_end - 1); 464 #endif 465 466 /* 467 * Okay, the kernel starts 2MB in from the bottom of physical 468 * memory. We are going to allocate our bootstrap pages downwards 469 * from there. 470 * 471 * We need to allocate some fixed page tables to get the kernel 472 * going. We allocate one page directory and a number of page 473 * tables and store the physical addresses in the kernel_pt_table 474 * array. 475 * 476 * The kernel page directory must be on a 16K boundary. The page 477 * tables must be on 4K bounaries. What we do is allocate the 478 * page directory on the first 16K boundary that we encounter, and 479 * the page tables on 4K boundaries otherwise. Since we allocate 480 * at least 3 L2 page tables, we are guaranteed to encounter at 481 * least one 16K aligned region. 482 */ 483 484 #ifdef VERBOSE_INIT_ARM 485 printf("Allocating page tables\n"); 486 #endif 487 488 free_pages = (physical_freeend - physical_freestart) / PAGE_SIZE; 489 490 #ifdef VERBOSE_INIT_ARM 491 printf("freestart = 0x%08lx, free_pages = %d (0x%08x)\n", 492 physical_freestart, free_pages, free_pages); 493 #endif 494 495 /* Define a macro to simplify memory allocation */ 496 #define valloc_pages(var, np) \ 497 alloc_pages((var).pv_pa, (np)); \ 498 (var).pv_va = KERNEL_BASE + (var).pv_pa - physical_start; 499 500 #define alloc_pages(var, np) \ 501 physical_freeend -= ((np) * PAGE_SIZE); \ 502 if (physical_freeend < physical_freestart) \ 503 panic("initarm: out of memory"); \ 504 (var) = physical_freeend; \ 505 free_pages -= (np); \ 506 memset((char *)(var), 0, ((np) * PAGE_SIZE)); 507 508 loop1 = 0; 509 for (loop = 0; loop <= NUM_KERNEL_PTS; ++loop) { 510 /* Are we 16KB aligned for an L1 ? */ 511 if (((physical_freeend - L1_TABLE_SIZE) & (L1_TABLE_SIZE - 1)) == 0 512 && kernel_l1pt.pv_pa == 0) { 513 valloc_pages(kernel_l1pt, L1_TABLE_SIZE / PAGE_SIZE); 514 } else { 515 valloc_pages(kernel_pt_table[loop1], 516 L2_TABLE_SIZE / PAGE_SIZE); 517 ++loop1; 518 } 519 } 520 521 /* This should never be able to happen but better confirm that. */ 522 if (!kernel_l1pt.pv_pa || (kernel_l1pt.pv_pa & (L1_TABLE_SIZE-1)) != 0) 523 panic("initarm: Failed to align the kernel page directory"); 524 525 /* 526 * Allocate a page for the system vectors page 527 */ 528 alloc_pages(systempage.pv_pa, 1); 529 530 /* Allocate stacks for all modes */ 531 valloc_pages(irqstack, IRQ_STACK_SIZE); 532 valloc_pages(abtstack, ABT_STACK_SIZE); 533 valloc_pages(undstack, UND_STACK_SIZE); 534 valloc_pages(kernelstack, UPAGES); 535 536 #ifdef VERBOSE_INIT_ARM 537 printf("IRQ stack: p0x%08lx v0x%08lx\n", irqstack.pv_pa, 538 irqstack.pv_va); 539 printf("ABT stack: p0x%08lx v0x%08lx\n", abtstack.pv_pa, 540 abtstack.pv_va); 541 printf("UND stack: p0x%08lx v0x%08lx\n", undstack.pv_pa, 542 undstack.pv_va); 543 printf("SVC stack: p0x%08lx v0x%08lx\n", kernelstack.pv_pa, 544 kernelstack.pv_va); 545 #endif 546 547 alloc_pages(msgbufphys, round_page(MSGBUFSIZE) / PAGE_SIZE); 548 549 /* 550 * Ok we have allocated physical pages for the primary kernel 551 * page tables. Save physical_freeend for when we give whats left 552 * of memory below 2Mbyte to UVM. 553 */ 554 555 physical_freeend_low = physical_freeend; 556 557 #ifdef VERBOSE_INIT_ARM 558 printf("Creating L1 page table at 0x%08lx\n", kernel_l1pt.pv_pa); 559 #endif 560 561 /* 562 * Now we start construction of the L1 page table 563 * We start by mapping the L2 page tables into the L1. 564 * This means that we can replace L1 mappings later on if necessary 565 */ 566 l1pagetable = kernel_l1pt.pv_pa; 567 568 /* Map the L2 pages tables in the L1 page table */ 569 pmap_link_l2pt(l1pagetable, ARM_VECTORS_HIGH & ~(0x00400000 - 1), 570 &kernel_pt_table[KERNEL_PT_SYS]); 571 for (loop = 0; loop < KERNEL_PT_KERNEL_NUM; loop++) 572 pmap_link_l2pt(l1pagetable, KERNEL_BASE + loop * 0x00400000, 573 &kernel_pt_table[KERNEL_PT_KERNEL + loop]); 574 for (loop = 0; loop < KERNEL_PT_VMDATA_NUM; loop++) 575 pmap_link_l2pt(l1pagetable, KERNEL_VM_BASE + loop * 0x00400000, 576 &kernel_pt_table[KERNEL_PT_VMDATA + loop]); 577 578 /* update the top of the kernel VM */ 579 pmap_curmaxkvaddr = 580 KERNEL_VM_BASE + (KERNEL_PT_VMDATA_NUM * 0x00400000); 581 582 #ifdef VERBOSE_INIT_ARM 583 printf("Mapping kernel\n"); 584 #endif 585 586 /* Now we fill in the L2 pagetable for the kernel static code/data */ 587 { 588 extern char etext[], _end[]; 589 size_t textsize = (uintptr_t) etext - KERNEL_TEXT_BASE; 590 size_t totalsize = (uintptr_t) _end - KERNEL_TEXT_BASE; 591 u_int logical; 592 593 textsize = (textsize + PGOFSET) & ~PGOFSET; 594 totalsize = (totalsize + PGOFSET) & ~PGOFSET; 595 596 logical = 0x00200000; /* offset of kernel in RAM */ 597 logical += pmap_map_chunk(l1pagetable, KERNEL_BASE + logical, 598 physical_start + logical, textsize, 599 VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 600 logical += pmap_map_chunk(l1pagetable, KERNEL_BASE + logical, 601 physical_start + logical, totalsize - textsize, 602 VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 603 } 604 605 #ifdef VERBOSE_INIT_ARM 606 printf("Constructing L2 page tables\n"); 607 #endif 608 609 /* Map the stack pages */ 610 pmap_map_chunk(l1pagetable, irqstack.pv_va, irqstack.pv_pa, 611 IRQ_STACK_SIZE * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 612 pmap_map_chunk(l1pagetable, abtstack.pv_va, abtstack.pv_pa, 613 ABT_STACK_SIZE * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 614 pmap_map_chunk(l1pagetable, undstack.pv_va, undstack.pv_pa, 615 UND_STACK_SIZE * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 616 pmap_map_chunk(l1pagetable, kernelstack.pv_va, kernelstack.pv_pa, 617 UPAGES * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 618 619 pmap_map_chunk(l1pagetable, kernel_l1pt.pv_va, kernel_l1pt.pv_pa, 620 L1_TABLE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_PAGETABLE); 621 622 for (loop = 0; loop < NUM_KERNEL_PTS; ++loop) { 623 pmap_map_chunk(l1pagetable, kernel_pt_table[loop].pv_va, 624 kernel_pt_table[loop].pv_pa, L2_TABLE_SIZE, 625 VM_PROT_READ|VM_PROT_WRITE, PTE_PAGETABLE); 626 } 627 628 /* Map the vector page. */ 629 pmap_map_entry(l1pagetable, ARM_VECTORS_HIGH, systempage.pv_pa, 630 VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 631 632 /* Map the statically mapped devices. */ 633 pmap_devmap_bootstrap(l1pagetable, tsarm_devmap); 634 635 /* 636 * Update the physical_freestart/physical_freeend/free_pages 637 * variables. 638 */ 639 { 640 extern char _end[]; 641 642 physical_freestart = physical_start + 643 (((((uintptr_t) _end) + PGOFSET) & ~PGOFSET) - 644 KERNEL_BASE); 645 physical_freeend = physical_end; 646 free_pages = 647 (physical_freeend - physical_freestart) / PAGE_SIZE; 648 } 649 650 /* 651 * Now we have the real page tables in place so we can switch to them. 652 * Once this is done we will be running with the REAL kernel page 653 * tables. 654 */ 655 656 /* Switch tables */ 657 #ifdef VERBOSE_INIT_ARM 658 printf("freestart = 0x%08lx, free_pages = %d (0x%x)\n", 659 physical_freestart, free_pages, free_pages); 660 printf("switching to new L1 page table @%#lx...", kernel_l1pt.pv_pa); 661 #endif 662 cpu_domains((DOMAIN_CLIENT << (PMAP_DOMAIN_KERNEL*2)) | DOMAIN_CLIENT); 663 cpu_setttb(kernel_l1pt.pv_pa, true); 664 cpu_tlb_flushID(); 665 cpu_domains(DOMAIN_CLIENT << (PMAP_DOMAIN_KERNEL*2)); 666 667 /* 668 * Moved from cpu_startup() as data_abort_handler() references 669 * this during uvm init 670 */ 671 uvm_lwp_setuarea(&lwp0, kernelstack.pv_va); 672 673 #ifdef VERBOSE_INIT_ARM 674 printf("done!\n"); 675 #endif 676 677 #ifdef VERBOSE_INIT_ARM 678 printf("bootstrap done.\n"); 679 #endif 680 681 arm32_vector_init(ARM_VECTORS_HIGH, ARM_VEC_ALL); 682 683 /* 684 * Pages were allocated during the secondary bootstrap for the 685 * stacks for different CPU modes. 686 * We must now set the r13 registers in the different CPU modes to 687 * point to these stacks. 688 * Since the ARM stacks use STMFD etc. we must set r13 to the top end 689 * of the stack memory. 690 */ 691 #ifdef VERBOSE_INIT_ARM 692 printf("init subsystems: stacks "); 693 #endif 694 695 set_stackptr(PSR_IRQ32_MODE, 696 irqstack.pv_va + IRQ_STACK_SIZE * PAGE_SIZE); 697 set_stackptr(PSR_ABT32_MODE, 698 abtstack.pv_va + ABT_STACK_SIZE * PAGE_SIZE); 699 set_stackptr(PSR_UND32_MODE, 700 undstack.pv_va + UND_STACK_SIZE * PAGE_SIZE); 701 702 /* 703 * Well we should set a data abort handler. 704 * Once things get going this will change as we will need a proper 705 * handler. 706 * Until then we will use a handler that just panics but tells us 707 * why. 708 * Initialisation of the vectors will just panic on a data abort. 709 * This just fills in a slightly better one. 710 */ 711 #ifdef VERBOSE_INIT_ARM 712 printf("vectors "); 713 #endif 714 data_abort_handler_address = (u_int)data_abort_handler; 715 prefetch_abort_handler_address = (u_int)prefetch_abort_handler; 716 undefined_handler_address = (u_int)undefinedinstruction_bounce; 717 718 /* Initialise the undefined instruction handlers */ 719 #ifdef VERBOSE_INIT_ARM 720 printf("undefined "); 721 #endif 722 undefined_init(); 723 724 /* Load memory into UVM. */ 725 #ifdef VERBOSE_INIT_ARM 726 printf("page "); 727 #endif 728 uvm_setpagesize(); /* initialize PAGE_SIZE-dependent variables */ 729 uvm_page_physload(atop(physical_freestart), atop(physical_freeend), 730 atop(physical_freestart), atop(physical_freeend), 731 VM_FREELIST_DEFAULT); 732 uvm_page_physload(0, atop(physical_freeend_low), 733 0, atop(physical_freeend_low), 734 VM_FREELIST_DEFAULT); 735 /* 736 * There is 32 Mb of memory on the TS-7200 in 4 8Mb chunks, so far 737 * we've only been working with the first one mapped at 0x0. Tell 738 * UVM about the others. 739 */ 740 uvm_page_physload(atop(0x1000000), atop(0x1800000), 741 atop(0x1000000), atop(0x1800000), 742 VM_FREELIST_DEFAULT); 743 uvm_page_physload(atop(0x4000000), atop(0x4800000), 744 atop(0x4000000), atop(0x4800000), 745 VM_FREELIST_DEFAULT); 746 uvm_page_physload(atop(0x5000000), atop(0x5800000), 747 atop(0x5000000), atop(0x5800000), 748 VM_FREELIST_DEFAULT); 749 750 physmem = 0x2000000 / PAGE_SIZE; 751 752 753 /* Boot strap pmap telling it where the kernel page table is */ 754 #ifdef VERBOSE_INIT_ARM 755 printf("pmap "); 756 #endif 757 pmap_bootstrap(KERNEL_VM_BASE, KERNEL_VM_BASE + KERNEL_VM_SIZE); 758 759 /* Setup the IRQ system */ 760 #ifdef VERBOSE_INIT_ARM 761 printf("irq "); 762 #endif 763 ep93xx_intr_init(); 764 #if NISA > 0 765 isa_intr_init(); 766 767 #ifdef VERBOSE_INIT_ARM 768 printf("isa "); 769 #endif 770 isa_tsarm_init(TS7XXX_IO16_VBASE + TS7XXX_ISAIO, 771 TS7XXX_IO16_VBASE + TS7XXX_ISAMEM); 772 #endif 773 774 #ifdef VERBOSE_INIT_ARM 775 printf("done.\n"); 776 #endif 777 778 #ifdef BOOTHOWTO 779 boothowto = BOOTHOWTO; 780 #endif 781 782 #ifdef DDB 783 db_machine_init(); 784 if (boothowto & RB_KDB) 785 Debugger(); 786 #endif 787 788 /* We return the new stack pointer address */ 789 return(kernelstack.pv_va + USPACE_SVC_STACK_TOP); 790 } 791 792 void 793 consinit(void) 794 { 795 static int consinit_called; 796 bus_space_handle_t ioh; 797 798 if (consinit_called != 0) 799 return; 800 801 consinit_called = 1; 802 803 /* 804 * Console devices are already mapped in VA. Our devmap reflects 805 * this, so register it now so drivers can map the console 806 * device. 807 */ 808 pmap_devmap_register(tsarm_devmap); 809 #if 0 810 isa_tsarm_init(TS7XXX_IO16_VBASE + TS7XXX_ISAIO, 811 TS7XXX_IO16_VBASE + TS7XXX_ISAMEM); 812 813 if (comcnattach(&isa_io_bs_tag, 0x3e8, comcnspeed, 814 COM_FREQ, COM_TYPE_NORMAL, comcnmode)) 815 { 816 panic("can't init serial console"); 817 } 818 #endif 819 820 #if NEPCOM > 0 821 bus_space_map(&ep93xx_bs_tag, EP93XX_APB_HWBASE + EP93XX_APB_UART1, 822 EP93XX_APB_UART_SIZE, 0, &ioh); 823 if (epcomcnattach(&ep93xx_bs_tag, EP93XX_APB_HWBASE + EP93XX_APB_UART1, 824 ioh, comcnspeed, comcnmode)) 825 { 826 panic("can't init serial console"); 827 } 828 #else 829 panic("serial console not configured"); 830 #endif 831 #if KGDB 832 #if NEPCOM > 0 833 if (strcmp(kgdb_devname, "epcom") == 0) { 834 com_kgdb_attach(&ep93xx_bs_tag, kgdb_devaddr, kgdb_devrate, 835 kgdb_devmode); 836 } 837 #endif /* NEPCOM > 0 */ 838 #endif /* KGDB */ 839 } 840 841 842 bus_dma_tag_t 843 ep93xx_bus_dma_init(struct arm32_bus_dma_tag *dma_tag_template) 844 { 845 int i; 846 struct arm32_bus_dma_tag *dmat; 847 848 for (i = 0; i < bootconfig.dramblocks; i++) { 849 tsarm_dma_ranges[i].dr_sysbase = bootconfig.dram[i].address; 850 tsarm_dma_ranges[i].dr_busbase = bootconfig.dram[i].address; 851 tsarm_dma_ranges[i].dr_len = bootconfig.dram[i].pages * 852 PAGE_SIZE; 853 } 854 855 dmat = dma_tag_template; 856 857 dmat->_ranges = tsarm_dma_ranges; 858 dmat->_nranges = bootconfig.dramblocks; 859 860 return dmat; 861 } 862