lubbock_machdep.c revision 1.21
1 /* $NetBSD: lubbock_machdep.c,v 1.21 2009/11/26 00:19:15 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 * Machine dependant functions for kernel setup for 32 * Intel DBPXA250 evaluation board (a.k.a. Lubbock). 33 * Based on iq80310_machhdep.c 34 */ 35 /* 36 * Copyright (c) 2001 Wasabi Systems, Inc. 37 * All rights reserved. 38 * 39 * Written by Jason R. Thorpe for Wasabi Systems, Inc. 40 * 41 * Redistribution and use in source and binary forms, with or without 42 * modification, are permitted provided that the following conditions 43 * are met: 44 * 1. Redistributions of source code must retain the above copyright 45 * notice, this list of conditions and the following disclaimer. 46 * 2. Redistributions in binary form must reproduce the above copyright 47 * notice, this list of conditions and the following disclaimer in the 48 * documentation and/or other materials provided with the distribution. 49 * 3. All advertising materials mentioning features or use of this software 50 * must display the following acknowledgement: 51 * This product includes software developed for the NetBSD Project by 52 * Wasabi Systems, Inc. 53 * 4. The name of Wasabi Systems, Inc. may not be used to endorse 54 * or promote products derived from this software without specific prior 55 * written permission. 56 * 57 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND 58 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 59 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 60 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC 61 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 62 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 63 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 64 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 65 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 66 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 67 * POSSIBILITY OF SUCH DAMAGE. 68 */ 69 70 /* 71 * Copyright (c) 1997,1998 Mark Brinicombe. 72 * Copyright (c) 1997,1998 Causality Limited. 73 * All rights reserved. 74 * 75 * Redistribution and use in source and binary forms, with or without 76 * modification, are permitted provided that the following conditions 77 * are met: 78 * 1. Redistributions of source code must retain the above copyright 79 * notice, this list of conditions and the following disclaimer. 80 * 2. Redistributions in binary form must reproduce the above copyright 81 * notice, this list of conditions and the following disclaimer in the 82 * documentation and/or other materials provided with the distribution. 83 * 3. All advertising materials mentioning features or use of this software 84 * must display the following acknowledgement: 85 * This product includes software developed by Mark Brinicombe 86 * for the NetBSD Project. 87 * 4. The name of the company nor the name of the author may be used to 88 * endorse or promote products derived from this software without specific 89 * prior written permission. 90 * 91 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 92 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 93 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 94 * IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, 95 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 96 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 97 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 98 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 99 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 100 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 101 * SUCH DAMAGE. 102 * 103 * Machine dependant functions for kernel setup for Intel IQ80310 evaluation 104 * boards using RedBoot firmware. 105 */ 106 107 /* 108 * DIP switches: 109 * 110 * S19: no-dot: set RB_KDB. enter kgdb session. 111 * S20: no-dot: set RB_SINGLE. don't go multi user mode. 112 */ 113 114 #include <sys/cdefs.h> 115 __KERNEL_RCSID(0, "$NetBSD: lubbock_machdep.c,v 1.21 2009/11/26 00:19:15 matt Exp $"); 116 117 #include "opt_ddb.h" 118 #include "opt_kgdb.h" 119 #include "opt_pmap_debug.h" 120 #include "opt_md.h" 121 #include "opt_com.h" 122 #include "md.h" 123 #include "lcd.h" 124 125 #include <sys/param.h> 126 #include <sys/device.h> 127 #include <sys/systm.h> 128 #include <sys/kernel.h> 129 #include <sys/exec.h> 130 #include <sys/proc.h> 131 #include <sys/msgbuf.h> 132 #include <sys/reboot.h> 133 #include <sys/termios.h> 134 #include <sys/ksyms.h> 135 136 #include <uvm/uvm_extern.h> 137 138 #include <sys/conf.h> 139 #include <dev/cons.h> 140 #include <dev/md.h> 141 #include <dev/ic/smc91cxxreg.h> 142 143 #include <machine/db_machdep.h> 144 #include <ddb/db_sym.h> 145 #include <ddb/db_extern.h> 146 #ifdef KGDB 147 #include <sys/kgdb.h> 148 #endif 149 150 #include <machine/bootconfig.h> 151 #include <machine/bus.h> 152 #include <machine/cpu.h> 153 #include <machine/frame.h> 154 #include <arm/undefined.h> 155 156 #include <arm/arm32/machdep.h> 157 158 #include <arm/xscale/pxa2x0reg.h> 159 #include <arm/xscale/pxa2x0var.h> 160 #include <arm/xscale/pxa2x0_gpio.h> 161 #include <arm/sa11x0/sa1111_reg.h> 162 #include <evbarm/lubbock/lubbock_reg.h> 163 #include <evbarm/lubbock/lubbock_var.h> 164 165 /* Kernel text starts 2MB in from the bottom of the kernel address space. */ 166 #define KERNEL_TEXT_BASE (KERNEL_BASE + 0x00200000) 167 #define KERNEL_VM_BASE (KERNEL_BASE + 0x01000000) 168 169 /* 170 * The range 0xc1000000 - 0xccffffff is available for kernel VM space 171 * Core-logic registers and I/O mappings occupy 0xfd000000 - 0xffffffff 172 */ 173 #define KERNEL_VM_SIZE 0x0C000000 174 175 176 /* 177 * Address to call from cpu_reset() to reset the machine. 178 * This is machine architecture dependant as it varies depending 179 * on where the ROM appears when you turn the MMU off. 180 */ 181 182 u_int cpu_reset_address = 0; 183 184 /* Define various stack sizes in pages */ 185 #define IRQ_STACK_SIZE 1 186 #define ABT_STACK_SIZE 1 187 #define UND_STACK_SIZE 1 188 189 BootConfig bootconfig; /* Boot config storage */ 190 char *boot_args = NULL; 191 char *boot_file = NULL; 192 193 vm_offset_t physical_start; 194 vm_offset_t physical_freestart; 195 vm_offset_t physical_freeend; 196 vm_offset_t physical_end; 197 u_int free_pages; 198 vm_offset_t pagetables_start; 199 200 /*int debug_flags;*/ 201 #ifndef PMAP_STATIC_L1S 202 int max_processes = 64; /* Default number */ 203 #endif /* !PMAP_STATIC_L1S */ 204 205 /* Physical and virtual addresses for some global pages */ 206 pv_addr_t systempage; 207 pv_addr_t irqstack; 208 pv_addr_t undstack; 209 pv_addr_t abtstack; 210 pv_addr_t kernelstack; 211 pv_addr_t minidataclean; 212 213 vm_offset_t msgbufphys; 214 215 extern u_int data_abort_handler_address; 216 extern u_int prefetch_abort_handler_address; 217 extern u_int undefined_handler_address; 218 219 #ifdef PMAP_DEBUG 220 extern int pmap_debug_level; 221 #endif 222 223 #define KERNEL_PT_SYS 0 /* Page table for mapping proc0 zero page */ 224 #define KERNEL_PT_KERNEL 1 /* Page table for mapping kernel */ 225 #define KERNEL_PT_KERNEL_NUM 4 226 #define KERNEL_PT_VMDATA (KERNEL_PT_KERNEL+KERNEL_PT_KERNEL_NUM) 227 /* Page tables for mapping kernel VM */ 228 #define KERNEL_PT_VMDATA_NUM 4 /* start with 16MB of KVM */ 229 #define NUM_KERNEL_PTS (KERNEL_PT_VMDATA + KERNEL_PT_VMDATA_NUM) 230 231 pv_addr_t kernel_pt_table[NUM_KERNEL_PTS]; 232 233 /* Prototypes */ 234 235 #if 0 236 void process_kernel_args(char *); 237 #endif 238 239 void consinit(void); 240 void kgdb_port_init(void); 241 void change_clock(uint32_t v); 242 243 bs_protos(bs_notimpl); 244 245 #include "com.h" 246 #if NCOM > 0 247 #include <dev/ic/comreg.h> 248 #include <dev/ic/comvar.h> 249 #endif 250 251 #ifndef CONSPEED 252 #define CONSPEED B115200 /* What RedBoot uses */ 253 #endif 254 #ifndef CONMODE 255 #define CONMODE ((TTYDEF_CFLAG & ~(CSIZE | CSTOPB | PARENB)) | CS8) /* 8N1 */ 256 #endif 257 258 int comcnspeed = CONSPEED; 259 int comcnmode = CONMODE; 260 261 static struct pxa2x0_gpioconf boarddep_gpioconf[] = { 262 { 44, GPIO_ALT_FN_1_IN }, /* BTCST */ 263 { 45, GPIO_ALT_FN_2_OUT }, /* BTRST */ 264 265 { 29, GPIO_ALT_FN_1_IN }, /* SDATA_IN0 */ 266 267 { -1 } 268 }; 269 static struct pxa2x0_gpioconf *lubbock_gpioconf[] = { 270 pxa25x_com_btuart_gpioconf, 271 pxa25x_com_ffuart_gpioconf, 272 #if 0 273 pxa25x_com_stuart_gpioconf, 274 #endif 275 pxa25x_pcic_gpioconf, 276 pxa25x_pxaacu_gpioconf, 277 boarddep_gpioconf, 278 NULL 279 }; 280 281 /* 282 * void cpu_reboot(int howto, char *bootstr) 283 * 284 * Reboots the system 285 * 286 * Deal with any syncing, unmounting, dumping and shutdown hooks, 287 * then reset the CPU. 288 */ 289 void 290 cpu_reboot(int howto, char *bootstr) 291 { 292 #ifdef DIAGNOSTIC 293 /* info */ 294 printf("boot: howto=%08x curproc=%p\n", howto, curproc); 295 #endif 296 297 /* 298 * If we are still cold then hit the air brakes 299 * and crash to earth fast 300 */ 301 if (cold) { 302 doshutdownhooks(); 303 pmf_system_shutdown(boothowto); 304 printf("The operating system has halted.\n"); 305 printf("Please press any key to reboot.\n\n"); 306 cngetc(); 307 printf("rebooting...\n"); 308 cpu_reset(); 309 /*NOTREACHED*/ 310 } 311 312 /* Disable console buffering */ 313 /* cnpollc(1);*/ 314 315 /* 316 * If RB_NOSYNC was not specified sync the discs. 317 * Note: Unless cold is set to 1 here, syslogd will die during the 318 * unmount. It looks like syslogd is getting woken up only to find 319 * that it cannot page part of the binary in as the filesystem has 320 * been unmounted. 321 */ 322 if (!(howto & RB_NOSYNC)) 323 bootsync(); 324 325 /* Say NO to interrupts */ 326 splhigh(); 327 328 /* Do a dump if requested. */ 329 if ((howto & (RB_DUMP | RB_HALT)) == RB_DUMP) 330 dumpsys(); 331 332 /* Run any shutdown hooks */ 333 doshutdownhooks(); 334 335 pmf_system_shutdown(boothowto); 336 337 /* Make sure IRQ's are disabled */ 338 IRQdisable; 339 340 if (howto & RB_HALT) { 341 printf("The operating system has halted.\n"); 342 printf("Please press any key to reboot.\n\n"); 343 cngetc(); 344 } 345 346 printf("rebooting...\n"); 347 cpu_reset(); 348 /*NOTREACHED*/ 349 } 350 351 static inline 352 pd_entry_t * 353 read_ttb(void) 354 { 355 long ttb; 356 357 __asm volatile("mrc p15, 0, %0, c2, c0, 0" : "=r" (ttb)); 358 359 360 return (pd_entry_t *)(ttb & ~((1<<14)-1)); 361 } 362 363 /* 364 * Static device mappings. These peripheral registers are mapped at 365 * fixed virtual addresses very early in initarm() so that we can use 366 * them while booting the kernel, and stay at the same address 367 * throughout whole kernel's life time. 368 * 369 * We use this table twice; once with bootstrap page table, and once 370 * with kernel's page table which we build up in initarm(). 371 * 372 * Since we map these registers into the bootstrap page table using 373 * pmap_devmap_bootstrap() which calls pmap_map_chunk(), we map 374 * registers segment-aligned and segment-rounded in order to avoid 375 * using the 2nd page tables. 376 */ 377 378 #define _A(a) ((a) & ~L1_S_OFFSET) 379 #define _S(s) (((s) + L1_S_SIZE - 1) & ~(L1_S_SIZE-1)) 380 381 static const struct pmap_devmap lubbock_devmap[] = { 382 { 383 LUBBOCK_OBIO_VBASE, 384 _A(LUBBOCK_OBIO_PBASE), 385 _S(LUBBOCK_OBIO_SIZE), 386 VM_PROT_READ|VM_PROT_WRITE, PTE_NOCACHE, 387 }, 388 { 389 LUBBOCK_GPIO_VBASE, 390 _A(PXA2X0_GPIO_BASE), 391 _S(PXA250_GPIO_SIZE), 392 VM_PROT_READ|VM_PROT_WRITE, PTE_NOCACHE, 393 }, 394 { 395 LUBBOCK_CLKMAN_VBASE, 396 _A(PXA2X0_CLKMAN_BASE), 397 _S(PXA2X0_CLKMAN_SIZE), 398 VM_PROT_READ|VM_PROT_WRITE, PTE_NOCACHE, 399 }, 400 { 401 LUBBOCK_INTCTL_VBASE, 402 _A(PXA2X0_INTCTL_BASE), 403 _S(PXA2X0_INTCTL_SIZE), 404 VM_PROT_READ|VM_PROT_WRITE, PTE_NOCACHE, 405 }, 406 { 407 LUBBOCK_FFUART_VBASE, 408 _A(PXA2X0_FFUART_BASE), 409 _S(4 * COM_NPORTS), 410 VM_PROT_READ|VM_PROT_WRITE, PTE_NOCACHE, 411 }, 412 { 413 LUBBOCK_BTUART_VBASE, 414 _A(PXA2X0_BTUART_BASE), 415 _S(4 * COM_NPORTS), 416 VM_PROT_READ|VM_PROT_WRITE, PTE_NOCACHE, 417 }, 418 419 {0, 0, 0, 0,} 420 }; 421 422 #undef _A 423 #undef _S 424 425 /* 426 * u_int initarm(...) 427 * 428 * Initial entry point on startup. This gets called before main() is 429 * entered. 430 * It should be responsible for setting up everything that must be 431 * in place when main is called. 432 * This includes 433 * Taking a copy of the boot configuration structure. 434 * Initialising the physical console so characters can be printed. 435 * Setting up page tables for the kernel 436 * Relocating the kernel to the bottom of physical memory 437 */ 438 u_int 439 initarm(void *arg) 440 { 441 extern vaddr_t xscale_cache_clean_addr; 442 int loop; 443 int loop1; 444 u_int l1pagetable; 445 paddr_t memstart; 446 psize_t memsize; 447 int led_data = 0; 448 #ifdef DIAGNOSTIC 449 extern vsize_t xscale_minidata_clean_size; /* used in KASSERT */ 450 #endif 451 #define LEDSTEP_P() ioreg_write(LUBBOCK_OBIO_PBASE+LUBBOCK_HEXLED, led_data++) 452 #define LEDSTEP() hex_led(led_data++) 453 454 /* use physical address until pagetable is set */ 455 LEDSTEP_P(); 456 457 /* map some peripheral registers at static I/O area */ 458 pmap_devmap_bootstrap((vaddr_t)read_ttb(), lubbock_devmap); 459 460 LEDSTEP_P(); 461 462 /* start 32.768 kHz OSC */ 463 ioreg_write(LUBBOCK_CLKMAN_VBASE + 0x08, 2); 464 /* Get ready for splfoo() */ 465 pxa2x0_intr_bootstrap(LUBBOCK_INTCTL_VBASE); 466 467 LEDSTEP(); 468 469 /* 470 * Heads up ... Setup the CPU / MMU / TLB functions 471 */ 472 if (set_cpufuncs()) 473 panic("cpu not recognized!"); 474 475 LEDSTEP(); 476 477 478 #if 0 479 /* Calibrate the delay loop. */ 480 #endif 481 482 /* 483 * Okay, RedBoot has provided us with the following memory map: 484 * 485 * Physical Address Range Description 486 * ----------------------- ---------------------------------- 487 * 0x00000000 - 0x01ffffff flash Memory (32MB) 488 * 0x04000000 - 0x05ffffff Application flash Memory (32MB) 489 * 0x08000000 - 0x080000ff I/O baseboard registers 490 * 0x0a000000 - 0x0a0fffff SRAM (1MB) 491 * 0x0c000000 - 0x0c0fffff Ethernet Controller 492 * 0x0e000000 - 0x0e0fffff Ethernet Controller (Attribute) 493 * 0x10000000 - 0x103fffff SA-1111 Companion Chip 494 * 0x14000000 - 0x17ffffff Expansion Card (64MB) 495 * 0x40000000 - 0x480fffff Processor Registers 496 * 0xa0000000 - 0xa3ffffff SDRAM Bank 0 (64MB) 497 * 498 * 499 * Virtual Address Range X C B Description 500 * ----------------------- - - - ---------------------------------- 501 * 0x00000000 - 0x00003fff N Y Y SDRAM 502 * 0x00004000 - 0x000fffff N Y N Boot ROM 503 * 0x00100000 - 0x01ffffff N N N Application Flash 504 * 0x04000000 - 0x05ffffff N N N Exp Application Flash 505 * 0x08000000 - 0x080fffff N N N I/O baseboard registers 506 * 0x0a000000 - 0x0a0fffff N N N SRAM 507 * 0x40000000 - 0x480fffff N N N Processor Registers 508 * 0xa0000000 - 0xa000ffff N Y N RedBoot SDRAM 509 * 0xa0017000 - 0xa3ffffff Y Y Y SDRAM 510 * 0xc0000000 - 0xcfffffff Y Y Y Cache Flush Region 511 * (done by this routine) 512 * 0xfd000000 - 0xfd0000ff N N N I/O baseboard registers 513 * 0xfd100000 - 0xfd3fffff N N N Processor Registers. 514 * 0xfd400000 - 0xfd4fffff N N N FF-UART 515 * 0xfd500000 - 0xfd5fffff N N N BT-UART 516 * 517 * RedBoot's first level page table is at 0xa0004000. There 518 * are also 2 second-level tables at 0xa0008000 and 519 * 0xa0008400. We will continue to use them until we switch to 520 * our pagetable by setttb(). 521 * 522 */ 523 524 /* setup GPIO for BTUART, in case bootloader doesn't take care of it */ 525 pxa2x0_gpio_bootstrap(LUBBOCK_GPIO_VBASE); 526 pxa2x0_gpio_config(lubbock_gpioconf); 527 528 /* turn on clock to UART block. 529 XXX: this should not be done here. */ 530 ioreg_write(LUBBOCK_CLKMAN_VBASE+CLKMAN_CKEN, CKEN_FFUART|CKEN_BTUART | 531 ioreg_read(LUBBOCK_CLKMAN_VBASE+CLKMAN_CKEN)); 532 533 LEDSTEP(); 534 535 consinit(); 536 LEDSTEP(); 537 #ifdef KGDB 538 kgdb_port_init(); 539 LEDSTEP(); 540 #endif 541 542 543 /* Talk to the user */ 544 printf("\nNetBSD/evbarm (lubbock) booting ...\n"); 545 546 /* Tweak memory controller */ 547 { 548 /* Modify access timing for CS3 (91c96) */ 549 550 uint32_t tmp = 551 ioreg_read(PXA2X0_MEMCTL_BASE+MEMCTL_MSC1); 552 ioreg_write(PXA2X0_MEMCTL_BASE+MEMCTL_MSC1, 553 (tmp & 0xffff) | (0x3881<<16)); 554 /* RRR=3, RDN=8, RDF=8 555 * XXX: can be faster? 556 */ 557 } 558 559 560 /* Initialize for PCMCIA/CF sockets */ 561 { 562 uint32_t tmp; 563 564 /* Activate two sockets. 565 XXX: This code segment should be moved to 566 pcmcia MD attach routine. 567 XXX: These bits should be toggled based on 568 existene of PCMCIA/CF cards 569 */ 570 ioreg_write(PXA2X0_MEMCTL_BASE+MEMCTL_MECR, 571 MECR_NOS|MECR_CIT); 572 573 tmp = ioreg_read(LUBBOCK_SACC_PBASE+SACCSBI_SKCR); 574 ioreg_write(LUBBOCK_SACC_PBASE+SACCSBI_SKCR, 575 (tmp & ~(1<<4)) | (1<<0)); 576 } 577 578 #if 0 579 /* 580 * Examine the boot args string for options we need to know about 581 * now. 582 */ 583 process_kernel_args((char *)nwbootinfo.bt_args); 584 #endif 585 586 { 587 int processor_card_id; 588 589 processor_card_id = 0x000f & 590 ioreg_read(LUBBOCK_OBIO_VBASE+LUBBOCK_MISCRD); 591 switch(processor_card_id){ 592 case 0: 593 /* Cotulla */ 594 memstart = 0xa0000000; 595 memsize = 0x04000000; /* 64MB */ 596 break; 597 case 1: 598 /* XXX: Sabiani */ 599 memstart = 0xa0000000; 600 memsize = 0x04000000; /* 64MB */ 601 break; 602 default: 603 /* XXX: Unknown */ 604 memstart = 0xa0000000; 605 memsize = 0x04000000; /* 64MB */ 606 } 607 } 608 609 printf("initarm: Configuring system ...\n"); 610 611 /* Fake bootconfig structure for the benefit of pmap.c */ 612 /* XXX must make the memory description h/w independent */ 613 bootconfig.dramblocks = 1; 614 bootconfig.dram[0].address = memstart; 615 bootconfig.dram[0].pages = memsize / PAGE_SIZE; 616 617 /* 618 * Set up the variables that define the availablilty of 619 * physical memory. For now, we're going to set 620 * physical_freestart to 0xa0200000 (where the kernel 621 * was loaded), and allocate the memory we need downwards. 622 * If we get too close to the page tables that RedBoot 623 * set up, we will panic. We will update physical_freestart 624 * and physical_freeend later to reflect what pmap_bootstrap() 625 * wants to see. 626 * 627 * XXX pmap_bootstrap() needs an enema. 628 */ 629 physical_start = bootconfig.dram[0].address; 630 physical_end = physical_start + (bootconfig.dram[0].pages * PAGE_SIZE); 631 632 physical_freestart = 0xa0009000UL; 633 physical_freeend = 0xa0200000UL; 634 635 physmem = (physical_end - physical_start) / PAGE_SIZE; 636 637 #ifdef VERBOSE_INIT_ARM 638 /* Tell the user about the memory */ 639 printf("physmemory: %d pages at 0x%08lx -> 0x%08lx\n", physmem, 640 physical_start, physical_end - 1); 641 #endif 642 643 /* 644 * Okay, the kernel starts 2MB in from the bottom of physical 645 * memory. We are going to allocate our bootstrap pages downwards 646 * from there. 647 * 648 * We need to allocate some fixed page tables to get the kernel 649 * going. We allocate one page directory and a number of page 650 * tables and store the physical addresses in the kernel_pt_table 651 * array. 652 * 653 * The kernel page directory must be on a 16K boundary. The page 654 * tables must be on 4K boundaries. What we do is allocate the 655 * page directory on the first 16K boundary that we encounter, and 656 * the page tables on 4K boundaries otherwise. Since we allocate 657 * at least 3 L2 page tables, we are guaranteed to encounter at 658 * least one 16K aligned region. 659 */ 660 661 #ifdef VERBOSE_INIT_ARM 662 printf("Allocating page tables\n"); 663 #endif 664 665 free_pages = (physical_freeend - physical_freestart) / PAGE_SIZE; 666 667 #ifdef VERBOSE_INIT_ARM 668 printf("freestart = 0x%08lx, free_pages = %d (0x%08x)\n", 669 physical_freestart, free_pages, free_pages); 670 #endif 671 672 /* Define a macro to simplify memory allocation */ 673 #define valloc_pages(var, np) \ 674 alloc_pages((var).pv_pa, (np)); \ 675 (var).pv_va = KERNEL_BASE + (var).pv_pa - physical_start; 676 677 #define alloc_pages(var, np) \ 678 physical_freeend -= ((np) * PAGE_SIZE); \ 679 if (physical_freeend < physical_freestart) \ 680 panic("initarm: out of memory"); \ 681 (var) = physical_freeend; \ 682 free_pages -= (np); \ 683 memset((char *)(var), 0, ((np) * PAGE_SIZE)); 684 685 loop1 = 0; 686 kernel_l1pt.pv_pa = 0; 687 kernel_l1pt.pv_va = 0; 688 for (loop = 0; loop <= NUM_KERNEL_PTS; ++loop) { 689 /* Are we 16KB aligned for an L1 ? */ 690 if (((physical_freeend - L1_TABLE_SIZE) & (L1_TABLE_SIZE - 1)) == 0 691 && kernel_l1pt.pv_pa == 0) { 692 valloc_pages(kernel_l1pt, L1_TABLE_SIZE / PAGE_SIZE); 693 } else { 694 valloc_pages(kernel_pt_table[loop1], 695 L2_TABLE_SIZE / PAGE_SIZE); 696 ++loop1; 697 } 698 } 699 700 /* This should never be able to happen but better confirm that. */ 701 if (!kernel_l1pt.pv_pa || (kernel_l1pt.pv_pa & (L1_TABLE_SIZE-1)) != 0) 702 panic("initarm: Failed to align the kernel page directory"); 703 704 LEDSTEP(); 705 706 /* 707 * Allocate a page for the system page mapped to V0x00000000 708 * This page will just contain the system vectors and can be 709 * shared by all processes. 710 */ 711 alloc_pages(systempage.pv_pa, 1); 712 713 /* Allocate stacks for all modes */ 714 valloc_pages(irqstack, IRQ_STACK_SIZE); 715 valloc_pages(abtstack, ABT_STACK_SIZE); 716 valloc_pages(undstack, UND_STACK_SIZE); 717 valloc_pages(kernelstack, UPAGES); 718 719 /* Allocate enough pages for cleaning the Mini-Data cache. */ 720 KASSERT(xscale_minidata_clean_size <= PAGE_SIZE); 721 valloc_pages(minidataclean, 1); 722 723 #ifdef VERBOSE_INIT_ARM 724 printf("IRQ stack: p0x%08lx v0x%08lx\n", irqstack.pv_pa, 725 irqstack.pv_va); 726 printf("ABT stack: p0x%08lx v0x%08lx\n", abtstack.pv_pa, 727 abtstack.pv_va); 728 printf("UND stack: p0x%08lx v0x%08lx\n", undstack.pv_pa, 729 undstack.pv_va); 730 printf("SVC stack: p0x%08lx v0x%08lx\n", kernelstack.pv_pa, 731 kernelstack.pv_va); 732 #endif 733 734 /* 735 * XXX Defer this to later so that we can reclaim the memory 736 * XXX used by the RedBoot page tables. 737 */ 738 alloc_pages(msgbufphys, round_page(MSGBUFSIZE) / PAGE_SIZE); 739 740 /* 741 * Ok we have allocated physical pages for the primary kernel 742 * page tables 743 */ 744 745 #ifdef VERBOSE_INIT_ARM 746 printf("Creating L1 page table at 0x%08lx\n", kernel_l1pt.pv_pa); 747 #endif 748 749 /* 750 * Now we start construction of the L1 page table 751 * We start by mapping the L2 page tables into the L1. 752 * This means that we can replace L1 mappings later on if necessary 753 */ 754 l1pagetable = kernel_l1pt.pv_pa; 755 756 /* Map the L2 pages tables in the L1 page table */ 757 pmap_link_l2pt(l1pagetable, 0x00000000, 758 &kernel_pt_table[KERNEL_PT_SYS]); 759 for (loop = 0; loop < KERNEL_PT_KERNEL_NUM; loop++) 760 pmap_link_l2pt(l1pagetable, KERNEL_BASE + loop * 0x00400000, 761 &kernel_pt_table[KERNEL_PT_KERNEL + loop]); 762 for (loop = 0; loop < KERNEL_PT_VMDATA_NUM; loop++) 763 pmap_link_l2pt(l1pagetable, KERNEL_VM_BASE + loop * 0x00400000, 764 &kernel_pt_table[KERNEL_PT_VMDATA + loop]); 765 766 /* update the top of the kernel VM */ 767 pmap_curmaxkvaddr = 768 KERNEL_VM_BASE + (KERNEL_PT_VMDATA_NUM * 0x00400000); 769 770 #ifdef VERBOSE_INIT_ARM 771 printf("Mapping kernel\n"); 772 #endif 773 774 /* Now we fill in the L2 pagetable for the kernel static code/data */ 775 { 776 extern char etext[], _end[]; 777 size_t textsize = (uintptr_t) etext - KERNEL_TEXT_BASE; 778 size_t totalsize = (uintptr_t) _end - KERNEL_TEXT_BASE; 779 u_int logical; 780 781 textsize = (textsize + PGOFSET) & ~PGOFSET; 782 totalsize = (totalsize + PGOFSET) & ~PGOFSET; 783 784 logical = 0x00200000; /* offset of kernel in RAM */ 785 786 logical += pmap_map_chunk(l1pagetable, KERNEL_BASE + logical, 787 physical_start + logical, textsize, 788 VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 789 logical += pmap_map_chunk(l1pagetable, KERNEL_BASE + logical, 790 physical_start + logical, totalsize - textsize, 791 VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 792 } 793 794 #ifdef VERBOSE_INIT_ARM 795 printf("Constructing L2 page tables\n"); 796 #endif 797 798 /* Map the stack pages */ 799 pmap_map_chunk(l1pagetable, irqstack.pv_va, irqstack.pv_pa, 800 IRQ_STACK_SIZE * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 801 pmap_map_chunk(l1pagetable, abtstack.pv_va, abtstack.pv_pa, 802 ABT_STACK_SIZE * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 803 pmap_map_chunk(l1pagetable, undstack.pv_va, undstack.pv_pa, 804 UND_STACK_SIZE * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 805 pmap_map_chunk(l1pagetable, kernelstack.pv_va, kernelstack.pv_pa, 806 UPAGES * PAGE_SIZE, VM_PROT_READ | VM_PROT_WRITE, PTE_CACHE); 807 808 pmap_map_chunk(l1pagetable, kernel_l1pt.pv_va, kernel_l1pt.pv_pa, 809 L1_TABLE_SIZE, VM_PROT_READ | VM_PROT_WRITE, PTE_PAGETABLE); 810 811 for (loop = 0; loop < NUM_KERNEL_PTS; ++loop) { 812 pmap_map_chunk(l1pagetable, kernel_pt_table[loop].pv_va, 813 kernel_pt_table[loop].pv_pa, L2_TABLE_SIZE, 814 VM_PROT_READ|VM_PROT_WRITE, PTE_PAGETABLE); 815 } 816 817 /* Map the Mini-Data cache clean area. */ 818 xscale_setup_minidata(l1pagetable, minidataclean.pv_va, 819 minidataclean.pv_pa); 820 821 /* Map the vector page. */ 822 #if 1 823 /* MULTI-ICE requires that page 0 is NC/NB so that it can download the 824 * cache-clean code there. */ 825 pmap_map_entry(l1pagetable, vector_page, systempage.pv_pa, 826 VM_PROT_READ|VM_PROT_WRITE, PTE_NOCACHE); 827 #else 828 pmap_map_entry(l1pagetable, vector_page, systempage.pv_pa, 829 VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 830 #endif 831 832 /* 833 * map integrated peripherals at same address in l1pagetable 834 * so that we can continue to use console. 835 */ 836 pmap_devmap_bootstrap(l1pagetable, lubbock_devmap); 837 838 /* 839 * Give the XScale global cache clean code an appropriately 840 * sized chunk of unmapped VA space starting at 0xff000000 841 * (our device mappings end before this address). 842 */ 843 xscale_cache_clean_addr = 0xff000000U; 844 845 /* 846 * Now we have the real page tables in place so we can switch to them. 847 * Once this is done we will be running with the REAL kernel page 848 * tables. 849 */ 850 851 /* 852 * Update the physical_freestart/physical_freeend/free_pages 853 * variables. 854 */ 855 { 856 extern char _end[]; 857 858 physical_freestart = physical_start + 859 (((((uintptr_t) _end) + PGOFSET) & ~PGOFSET) - 860 KERNEL_BASE); 861 physical_freeend = physical_end; 862 free_pages = 863 (physical_freeend - physical_freestart) / PAGE_SIZE; 864 } 865 866 /* Switch tables */ 867 #ifdef VERBOSE_INIT_ARM 868 printf("freestart = 0x%08lx, free_pages = %d (0x%x)\n", 869 physical_freestart, free_pages, free_pages); 870 printf("switching to new L1 page table @%#lx...", kernel_l1pt.pv_pa); 871 #endif 872 873 LEDSTEP(); 874 875 cpu_domains((DOMAIN_CLIENT << (PMAP_DOMAIN_KERNEL*2)) | DOMAIN_CLIENT); 876 setttb(kernel_l1pt.pv_pa); 877 cpu_tlb_flushID(); 878 cpu_domains(DOMAIN_CLIENT << (PMAP_DOMAIN_KERNEL*2)); 879 LEDSTEP(); 880 881 /* 882 * Moved from cpu_startup() as data_abort_handler() references 883 * this during uvm init 884 */ 885 lwp0.l_addr = (struct user *)kernelstack.pv_va; 886 887 #ifdef VERBOSE_INIT_ARM 888 printf("bootstrap done.\n"); 889 #endif 890 891 arm32_vector_init(ARM_VECTORS_LOW, ARM_VEC_ALL); 892 893 /* 894 * Pages were allocated during the secondary bootstrap for the 895 * stacks for different CPU modes. 896 * We must now set the r13 registers in the different CPU modes to 897 * point to these stacks. 898 * Since the ARM stacks use STMFD etc. we must set r13 to the top end 899 * of the stack memory. 900 */ 901 printf("init subsystems: stacks "); 902 903 set_stackptr(PSR_IRQ32_MODE, irqstack.pv_va + IRQ_STACK_SIZE * PAGE_SIZE); 904 set_stackptr(PSR_ABT32_MODE, abtstack.pv_va + ABT_STACK_SIZE * PAGE_SIZE); 905 set_stackptr(PSR_UND32_MODE, undstack.pv_va + UND_STACK_SIZE * PAGE_SIZE); 906 907 /* 908 * Well we should set a data abort handler. 909 * Once things get going this will change as we will need a proper 910 * handler. 911 * Until then we will use a handler that just panics but tells us 912 * why. 913 * Initialisation of the vectors will just panic on a data abort. 914 * This just fills in a slightly better one. 915 */ 916 printf("vectors "); 917 data_abort_handler_address = (u_int)data_abort_handler; 918 prefetch_abort_handler_address = (u_int)prefetch_abort_handler; 919 undefined_handler_address = (u_int)undefinedinstruction_bounce; 920 921 /* Initialise the undefined instruction handlers */ 922 printf("undefined "); 923 undefined_init(); 924 925 /* Load memory into UVM. */ 926 printf("page "); 927 uvm_setpagesize(); /* initialize PAGE_SIZE-dependent variables */ 928 uvm_page_physload(atop(physical_freestart), atop(physical_freeend), 929 atop(physical_freestart), atop(physical_freeend), 930 VM_FREELIST_DEFAULT); 931 932 /* Boot strap pmap telling it where the kernel page table is */ 933 printf("pmap "); 934 LEDSTEP(); 935 pmap_bootstrap(KERNEL_VM_BASE, KERNEL_VM_BASE + KERNEL_VM_SIZE); 936 LEDSTEP(); 937 938 #ifdef __HAVE_MEMORY_DISK__ 939 md_root_setconf(memory_disk, sizeof memory_disk); 940 #endif 941 942 { 943 uint16_t sw = ioreg16_read(LUBBOCK_OBIO_VBASE+LUBBOCK_USERSW); 944 945 if (0 == (sw & (1<<13))) /* check S19 */ 946 boothowto |= RB_KDB; 947 if (0 == (sw & (1<<12))) /* S20 */ 948 boothowto |= RB_SINGLE; 949 } 950 951 LEDSTEP(); 952 953 #ifdef KGDB 954 if (boothowto & RB_KDB) { 955 kgdb_debug_init = 1; 956 kgdb_connect(1); 957 } 958 #endif 959 960 #ifdef DDB 961 db_machine_init(); 962 963 /* Firmware doesn't load symbols. */ 964 ddb_init(0, NULL, NULL); 965 966 if (boothowto & RB_KDB) 967 Debugger(); 968 #endif 969 970 /* We return the new stack pointer address */ 971 return(kernelstack.pv_va + USPACE_SVC_STACK_TOP); 972 } 973 974 #if 0 975 void 976 process_kernel_args(char *args) 977 { 978 979 boothowto = 0; 980 981 /* Make a local copy of the bootargs */ 982 strncpy(bootargs, args, MAX_BOOT_STRING); 983 984 args = bootargs; 985 boot_file = bootargs; 986 987 /* Skip the kernel image filename */ 988 while (*args != ' ' && *args != 0) 989 ++args; 990 991 if (*args != 0) 992 *args++ = 0; 993 994 while (*args == ' ') 995 ++args; 996 997 boot_args = args; 998 999 printf("bootfile: %s\n", boot_file); 1000 printf("bootargs: %s\n", boot_args); 1001 1002 parse_mi_bootargs(boot_args); 1003 } 1004 #endif 1005 1006 #ifdef KGDB 1007 #ifndef KGDB_DEVNAME 1008 #define KGDB_DEVNAME "ffuart" 1009 #endif 1010 const char kgdb_devname[] = KGDB_DEVNAME; 1011 1012 #if (NCOM > 0) 1013 #ifndef KGDB_DEVMODE 1014 #define KGDB_DEVMODE ((TTYDEF_CFLAG & ~(CSIZE | CSTOPB | PARENB)) | CS8) /* 8N1 */ 1015 #endif 1016 int comkgdbmode = KGDB_DEVMODE; 1017 #endif /* NCOM */ 1018 1019 #endif /* KGDB */ 1020 1021 1022 void 1023 consinit(void) 1024 { 1025 static int consinit_called = 0; 1026 uint32_t ckenreg = ioreg_read(LUBBOCK_CLKMAN_VBASE+CLKMAN_CKEN); 1027 #if 0 1028 char *console = CONSDEVNAME; 1029 #endif 1030 1031 if (consinit_called != 0) 1032 return; 1033 1034 consinit_called = 1; 1035 1036 #if NCOM > 0 1037 1038 #ifdef FFUARTCONSOLE 1039 /* Check switch. */ 1040 if (0 == (ioreg_read(LUBBOCK_OBIO_VBASE+LUBBOCK_USERSW) & (1<<15))) { 1041 /* We don't use FF serial when S17=no-dot position */ 1042 } 1043 #ifdef KGDB 1044 else if (0 == strcmp(kgdb_devname, "ffuart")) { 1045 /* port is reserved for kgdb */ 1046 } 1047 #endif 1048 else if (0 == comcnattach(&pxa2x0_a4x_bs_tag, PXA2X0_FFUART_BASE, 1049 comcnspeed, PXA2X0_COM_FREQ, COM_TYPE_PXA2x0, comcnmode)) { 1050 #if 0 1051 /* XXX: can't call pxa2x0_clkman_config yet */ 1052 pxa2x0_clkman_config(CKEN_FFUART, 1); 1053 #else 1054 ioreg_write(LUBBOCK_CLKMAN_VBASE+CLKMAN_CKEN, 1055 ckenreg|CKEN_FFUART); 1056 #endif 1057 1058 return; 1059 } 1060 #endif /* FFUARTCONSOLE */ 1061 1062 #ifdef BTUARTCONSOLE 1063 #ifdef KGDB 1064 if (0 == strcmp(kgdb_devname, "btuart")) { 1065 /* port is reserved for kgdb */ 1066 } else 1067 #endif 1068 if (0 == comcnattach(&pxa2x0_a4x_bs_tag, PXA2X0_BTUART_BASE, 1069 comcnspeed, PXA2X0_COM_FREQ, COM_TYPE_PXA2x0, comcnmode)) { 1070 ioreg_write(LUBBOCK_CLKMAN_VBASE+CLKMAN_CKEN, 1071 ckenreg|CKEN_BTUART); 1072 return; 1073 } 1074 #endif /* BTUARTCONSOLE */ 1075 1076 1077 #endif /* NCOM */ 1078 1079 } 1080 1081 #ifdef KGDB 1082 void 1083 kgdb_port_init(void) 1084 { 1085 #if (NCOM > 0) && defined(COM_PXA2X0) 1086 paddr_t paddr = 0; 1087 uint32_t ckenreg = ioreg_read(LUBBOCK_CLKMAN_VBASE+CLKMAN_CKEN); 1088 1089 if (0 == strcmp(kgdb_devname, "ffuart")) { 1090 paddr = PXA2X0_FFUART_BASE; 1091 ckenreg |= CKEN_FFUART; 1092 } 1093 else if (0 == strcmp(kgdb_devname, "btuart")) { 1094 paddr = PXA2X0_BTUART_BASE; 1095 ckenreg |= CKEN_BTUART; 1096 } 1097 1098 if (paddr && 1099 0 == com_kgdb_attach(&pxa2x0_a4x_bs_tag, paddr, 1100 kgdb_rate, PXA2X0_COM_FREQ, COM_TYPE_PXA2x0, comkgdbmode)) { 1101 1102 ioreg_write(LUBBOCK_CLKMAN_VBASE+CLKMAN_CKEN, ckenreg); 1103 } 1104 #endif 1105 } 1106 #endif 1107 1108 #if 0 1109 /* 1110 * display a number in hex LED. 1111 * a digit is blank when the corresponding bit in arg blank is 1 1112 */ 1113 unsigned short led_control_value = 0; 1114 1115 void 1116 hex_led_blank(uint32_t value, int blank) 1117 { 1118 int save = disable_interrupts(I32_bit); 1119 1120 ioreg_write(LUBBOCK_OBIO_VBASE+0x10, value); 1121 led_control_value = (led_control_value & 0xff) 1122 | ((blank & 0xff)<<8); 1123 ioreg_write(LUBBOCK_OBIO_VBASE+0x40, led_control_value); 1124 restore_interrupts(save); 1125 } 1126 #endif 1127
Indexes created Wed Oct 22 13:09:56 GMT 2025