Annotation of sys/arch/jornada/jornada/jornada_machdep.c.test, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: armish_machdep.c,v 1.10 2007/05/19 15:49:05 miod Exp $ */
! 2: /* $NetBSD: lubbock_machdep.c,v 1.2 2003/07/15 00:25:06 lukem Exp $ */
! 3:
! 4: /*
! 5: * Copyright (c) 2001, 2002, 2003 Wasabi Systems, Inc.
! 6: * All rights reserved.
! 7: *
! 8: * Written by Jason R. Thorpe for 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 dependant functions for kernel setup for Intel IQ80321 evaluation
! 73: * boards using RedBoot firmware.
! 74: */
! 75:
! 76: /*
! 77: * DIP switches:
! 78: *
! 79: * S19: no-dot: set RB_KDB. enter kgdb session.
! 80: * S20: no-dot: set RB_SINGLE. don't go multi user mode.
! 81: */
! 82:
! 83: #include <sys/param.h>
! 84: #include <sys/device.h>
! 85: #include <sys/systm.h>
! 86: #include <sys/kernel.h>
! 87: #include <sys/exec.h>
! 88: #include <sys/proc.h>
! 89: #include <sys/msgbuf.h>
! 90: #include <sys/reboot.h>
! 91: #include <sys/termios.h>
! 92: #include <sys/kcore.h>
! 93:
! 94: #include <uvm/uvm_extern.h>
! 95:
! 96: #include <sys/conf.h>
! 97: #include <sys/queue.h>
! 98: #include <sys/device.h>
! 99: #include <dev/cons.h>
! 100:
! 101: #include <machine/db_machdep.h>
! 102: #include <ddb/db_sym.h>
! 103: #include <ddb/db_extern.h>
! 104:
! 105: #include <machine/bootconfig.h>
! 106: #include <machine/bus.h>
! 107: #include <machine/cpu.h>
! 108: #include <machine/frame.h>
! 109: #include <arm/kcore.h>
! 110: #include <arm/undefined.h>
! 111: #include <arm/machdep.h>
! 112:
! 113: #include <arm/sa11x0/sa11x0_reg.h>
! 114: #include <arm/sa11x0/sa11x0_var.h>
! 115: #include <machine/jornada_reg.h>
! 116:
! 117: #include "sacom.h"
! 118: #if NSACOM > 0
! 119: int sacomcnattach(bus_space_tag_t bust, bus_addr_t busa, int speed);
! 120: void sacomfakecnattach(void);
! 121: #endif
! 122:
! 123: #include "jfb.h"
! 124: #if NJFB > 0
! 125: #include <arch/jornada/dev/jfbreg.h>
! 126: void jfbfakecnattach(bus_addr_t addr);
! 127: int jfbcnattach(bus_space_tag_t bust, bus_addr_t busa);
! 128: #endif /* NJFB */
! 129:
! 130: /* Kernel text starts 2MB in from the bottom of the kernel address space. */
! 131: #define KERNEL_TEXT_BASE (KERNEL_BASE + 0x00200000)
! 132: #define KERNEL_VM_BASE (KERNEL_BASE + 0x10000000)
! 133:
! 134: /*
! 135: * The range 0xc1000000 - 0xcfffffff is available for kernel VM space
! 136: * Core-logic registers and I/O mappings occupy 0xfd000000 - 0xffffffff
! 137: */
! 138: #define KERNEL_VM_SIZE 0x20000000
! 139:
! 140:
! 141: /*
! 142: * Address to call from cpu_reset() to reset the machine.
! 143: * This is machine architecture dependant as it varies depending
! 144: * on where the ROM appears when you turn the MMU off.
! 145: */
! 146:
! 147: u_int cpu_reset_address = 0;
! 148:
! 149: /* Define various stack sizes in pages */
! 150: #define IRQ_STACK_SIZE 1
! 151: #define ABT_STACK_SIZE 1
! 152: #ifdef IPKDB
! 153: #define UND_STACK_SIZE 2
! 154: #else
! 155: #define UND_STACK_SIZE 1
! 156: #endif
! 157:
! 158: BootConfig bootconfig; /* Boot config storage */
! 159: char *boot_args = NULL;
! 160: char *boot_file = NULL;
! 161:
! 162: paddr_t physical_start;
! 163: paddr_t physical_freestart;
! 164: paddr_t physical_freeend;
! 165: paddr_t physical_end;
! 166: u_int free_pages;
! 167: paddr_t pagetables_start;
! 168: int physmem = 0;
! 169:
! 170: /*int debug_flags;*/
! 171: #ifndef PMAP_STATIC_L1S
! 172: int max_processes = 64; /* Default number */
! 173: #endif /* !PMAP_STATIC_L1S */
! 174:
! 175: /* Physical and virtual addresses for some global pages */
! 176: pv_addr_t systempage;
! 177: pv_addr_t irqstack;
! 178: pv_addr_t undstack;
! 179: pv_addr_t abtstack;
! 180: extern pv_addr_t kernelstack;
! 181: pv_addr_t minidataclean;
! 182:
! 183: paddr_t msgbufphys;
! 184:
! 185: extern u_int data_abort_handler_address;
! 186: extern u_int prefetch_abort_handler_address;
! 187: extern u_int undefined_handler_address;
! 188:
! 189: #ifdef PMAP_DEBUG
! 190: extern int pmap_debug_level;
! 191: #endif
! 192:
! 193: #define KERNEL_PT_SYS 0 /* L2 table for mapping zero page */
! 194:
! 195: #define KERNEL_PT_KERNEL 1 /* L2 table for mapping kernel */
! 196: #define KERNEL_PT_KERNEL_NUM 8
! 197:
! 198: /* L2 table for mapping i80312 */
! 199: #define KERNEL_PT_IOPXS (KERNEL_PT_KERNEL + KERNEL_PT_KERNEL_NUM)
! 200:
! 201: /* L2 tables for mapping kernel VM */
! 202: #define KERNEL_PT_VMDATA (KERNEL_PT_IOPXS + 1)
! 203: //#define KERNEL_PT_VMDATA (KERNEL_PT_KERNEL + KERNEL_PT_KERNEL_NUM)
! 204: #define KERNEL_PT_VMDATA_NUM 8 /* start with 16MB of KVM */
! 205: #define NUM_KERNEL_PTS (KERNEL_PT_VMDATA + KERNEL_PT_VMDATA_NUM)
! 206:
! 207: pv_addr_t kernel_pt_table[NUM_KERNEL_PTS];
! 208:
! 209: extern struct user *proc0paddr;
! 210:
! 211: /* Prototypes */
! 212:
! 213: #define BOOT_STRING_MAGIC 0x4f425344
! 214:
! 215: char bootargs[MAX_BOOT_STRING];
! 216: void process_kernel_args(char *);
! 217:
! 218: void consinit(void);
! 219: void fakecninit(bus_addr_t paddr);
! 220:
! 221: #include "com.h"
! 222: #if NCOM > 0
! 223: #include <dev/ic/comreg.h>
! 224: #include <dev/ic/comvar.h>
! 225: #endif
! 226:
! 227: #ifndef CONSPEED
! 228: #define CONSPEED B115200 /* What RedBoot uses */
! 229: #endif
! 230: #ifndef CONMODE
! 231: #define CONMODE ((TTYDEF_CFLAG & ~(CSIZE | CSTOPB | PARENB)) | CS8 | CLOCAL) /* 8N1 */
! 232: #endif
! 233:
! 234: int comcnspeed = CONSPEED;
! 235: int comcnmode = CONMODE;
! 236:
! 237:
! 238: /*
! 239: * void boot(int howto, char *bootstr)
! 240: *
! 241: * Reboots the system
! 242: *
! 243: * Deal with any syncing, unmounting, dumping and shutdown hooks,
! 244: * then reset the CPU.
! 245: */
! 246: void board_reset(void);
! 247: void board_powerdown(void);
! 248: void
! 249: boot(int howto)
! 250: {
! 251: /*
! 252: * If we are still cold then hit the air brakes
! 253: * and crash to earth fast
! 254: */
! 255: if (cold) {
! 256: doshutdownhooks();
! 257: if ((howto & (RB_HALT | RB_USERREQ)) != RB_USERREQ) {
! 258: printf("The operating system has halted.\n");
! 259: printf("Please press any key to reboot.\n\n");
! 260: cngetc();
! 261: }
! 262: printf("rebooting...\n");
! 263: delay(60000);
! 264: cpu_reset();
! 265: printf("reboot failed; spinning\n");
! 266: while(1);
! 267: /*NOTREACHED*/
! 268: }
! 269:
! 270: /* Disable console buffering */
! 271: /* cnpollc(1);*/
! 272:
! 273: /*
! 274: * If RB_NOSYNC was not specified sync the discs.
! 275: * Note: Unless cold is set to 1 here, syslogd will die during the
! 276: * unmount. It looks like syslogd is getting woken up only to find
! 277: * that it cannot page part of the binary in as the filesystem has
! 278: * been unmounted.
! 279: */
! 280: if (!(howto & RB_NOSYNC))
! 281: bootsync(howto);
! 282:
! 283: /* Say NO to interrupts */
! 284: splhigh();
! 285:
! 286: /* Do a dump if requested. */
! 287: if ((howto & (RB_DUMP | RB_HALT)) == RB_DUMP)
! 288: dumpsys();
! 289:
! 290: /* Run any shutdown hooks */
! 291: doshutdownhooks();
! 292:
! 293: /* Make sure IRQ's are disabled */
! 294: IRQdisable;
! 295:
! 296: if (howto & RB_HALT) {
! 297: if (howto & RB_POWERDOWN) {
! 298: /* TODO */
! 299: //board_powerdown();
! 300: printf("WARNING: powerdown failed!\n");
! 301: }
! 302:
! 303: printf("The operating system has halted.\n");
! 304: printf("Please press any key to reboot.\n\n");
! 305: cngetc();
! 306: }
! 307:
! 308: printf("rebooting...\n");
! 309:
! 310: /* TODO */
! 311: // board_reset();
! 312: cpu_reset();
! 313: printf("reboot failed; spinning\n");
! 314: while(1);
! 315: /*NOTREACHED*/
! 316: }
! 317:
! 318: /*
! 319: * Mapping table for core kernel memory. These areas are mapped in
! 320: * init time at fixed virtual address with section mappings.
! 321: */
! 322: const struct pmap_devmap jornada_devmap[] = {
! 323: /*
! 324: * Map the on-board devices VA == PA so that we can access them
! 325: * with the MMU on or off.
! 326: */
! 327: {
! 328: SACOM3_BASE,
! 329: SACOM3_HW_BASE,
! 330: 0x24 /* SACOM3_SIZE, */,
! 331: VM_PROT_READ|VM_PROT_WRITE,
! 332: PTE_NOCACHE,
! 333: },
! 334: {
! 335: SAIPIC_VBASE,
! 336: SAIPIC_BASE,
! 337: 0x24 /* SAIPIC_SIZE, */,
! 338: VM_PROT_READ|VM_PROT_WRITE,
! 339: PTE_NOCACHE,
! 340: },
! 341: {
! 342: JFB_VBASE,
! 343: JFB_BASE,
! 344: JFB_SIZE,
! 345: VM_PROT_READ|VM_PROT_WRITE,
! 346: PTE_NOCACHE,
! 347: },
! 348: {0, 0, 0, 0, 0}
! 349: };
! 350:
! 351:
! 352: /*
! 353: * u_int initarm(...)
! 354: *
! 355: * Initial entry point on startup. This gets called before main() is
! 356: * entered.
! 357: * It should be responsible for setting up everything that must be
! 358: * in place when main is called.
! 359: * This includes
! 360: * Taking a copy of the boot configuration structure.
! 361: * Initialising the physical console so characters can be printed.
! 362: * Setting up page tables for the kernel
! 363: * Relocating the kernel to the bottom of physical memory
! 364: */
! 365: u_int
! 366: initarm(void *arg)
! 367: {
! 368: extern cpu_kcore_hdr_t cpu_kcore_hdr;
! 369: int loop;
! 370: int loop1;
! 371: u_int l1pagetable;
! 372: pv_addr_t kernel_l1pt;
! 373: paddr_t memstart;
! 374: psize_t memsize;
! 375: extern u_int32_t esym; /* &_end if no symbols are loaded */
! 376:
! 377: /* get ready for splfoo() */
! 378: sa11x0_intr_bootstrap(SAIPIC_BASE);
! 379:
! 380: pmap_devmap_register(jornada_devmap);
! 381:
! 382: /* setup a serial console for very early boot */
! 383: #ifdef CONSOLE_COM
! 384: fakecninit(SACOM3_HW_BASE);
! 385: #else
! 386: fakecninit(JFB_BASE);
! 387: #endif
! 388:
! 389: /*
! 390: * Heads up ... Setup the CPU / MMU / TLB functions
! 391: */
! 392: if (set_cpufuncs())
! 393: panic("cpu not recognized!");
! 394:
! 395: /*
! 396: * Examine the boot args string for options we need to know about
! 397: * now.
! 398: */
! 399: /* XXX should really be done after setting up the console, but we
! 400: * XXX need to parse the console selection flags right now. */
! 401: process_kernel_args((char *)0xc0200000 - MAX_BOOT_STRING - 1);
! 402: #ifdef RAMDISK_HOOKS
! 403: boothowto |= RB_DFLTROOT;
! 404: #endif /* RAMDISK_HOOKS */
! 405:
! 406: /* Talk to the user */
! 407: printf("\nOpenBSD/jornada booting ...\n");
! 408:
! 409: #define VERBOSE_INIT_ARM
! 410:
! 411: /* Ugly hardcode DRAM bounds */
! 412: /* TODO */
! 413: memstart = (paddr_t)0xc0000000;
! 414: memsize = (psize_t)32 * 1024 * 1024;
! 415:
! 416: #define DEBUG
! 417: #ifdef DEBUG
! 418: printf("initarm: Configuring system ...\n");
! 419: #endif
! 420:
! 421: /* Fake bootconfig structure for the benefit of pmap.c */
! 422: /* XXX must make the memory description h/w independant */
! 423: bootconfig.dramblocks = 1;
! 424: bootconfig.dram[0].address = memstart;
! 425: bootconfig.dram[0].pages = memsize / PAGE_SIZE;
! 426:
! 427: /*
! 428: * Set up the variables that define the availablilty of
! 429: * physical memory. For now, we're going to set
! 430: * physical_freestart to 0xc0200000 (where the kernel
! 431: * was loaded), and allocate the memory we need downwards.
! 432: * If we get too close to the page tables that RedBoot
! 433: * set up, we will panic. We will update physical_freestart
! 434: * and physical_freeend later to reflect what pmap_bootstrap()
! 435: * wants to see.
! 436: *
! 437: * XXX pmap_bootstrap() needs an enema.
! 438: */
! 439: physical_start = bootconfig.dram[0].address;
! 440: physical_end = physical_start + (bootconfig.dram[0].pages * PAGE_SIZE);
! 441:
! 442: physical_freestart = 0xc0200000UL;
! 443: // physical_freeend = 0xc0200000UL;
! 444: physical_freeend = physical_end;
! 445:
! 446: physmem = (physical_end - physical_start) / PAGE_SIZE;
! 447:
! 448: #if defined(DEBUG) || defined(VERBOSE_INIT_ARM)
! 449: /* Tell the user about the memory */
! 450: printf("physmemory: %d pages at 0x%08lx -> 0x%08lx\n", physmem,
! 451: physical_start, physical_end - 1);
! 452: #endif
! 453:
! 454: /*
! 455: * Okay, the kernel starts 2MB in from the bottom of physical
! 456: * memory. We are going to allocate our bootstrap pages downwards
! 457: * from there.
! 458: *
! 459: * We need to allocate some fixed page tables to get the kernel
! 460: * going. We allocate one page directory and a number of page
! 461: * tables and store the physical addresses in the kernel_pt_table
! 462: * array.
! 463: *
! 464: * The kernel page directory must be on a 16K boundary. The page
! 465: * tables must be on 4K boundaries. What we do is allocate the
! 466: * page directory on the first 16K boundary that we encounter, and
! 467: * the page tables on 4K boundaries otherwise. Since we allocate
! 468: * at least 3 L2 page tables, we are guaranteed to encounter at
! 469: * least one 16K aligned region.
! 470: */
! 471:
! 472: #ifdef VERBOSE_INIT_ARM
! 473: printf("Allocating page tables\n");
! 474: #endif
! 475:
! 476: free_pages = (physical_freeend - physical_freestart) / PAGE_SIZE;
! 477:
! 478: #ifdef VERBOSE_INIT_ARM
! 479: printf("freestart = 0x%08lx, free_pages = %d (0x%08x)\n",
! 480: physical_freestart, free_pages, free_pages);
! 481: #endif
! 482:
! 483: /* Define a macro to simplify memory allocation */
! 484: #define valloc_pages(var, np) \
! 485: alloc_pages((var).pv_pa, (np)); \
! 486: (var).pv_va = KERNEL_BASE + (var).pv_pa - physical_start;
! 487:
! 488: #define alloc_pages(var, np) \
! 489: physical_freeend -= ((np) * PAGE_SIZE); \
! 490: if (physical_freeend < physical_freestart) \
! 491: panic("initarm: out of memory"); \
! 492: (var) = physical_freeend; \
! 493: free_pages -= (np); \
! 494: memset((char *)(var), 0, ((np) * PAGE_SIZE));
! 495:
! 496: loop1 = 0;
! 497: kernel_l1pt.pv_pa = 0;
! 498: for (loop = 0; loop <= NUM_KERNEL_PTS; ++loop) {
! 499: /* Are we 16KB aligned for an L1 ? */
! 500: if (((physical_freeend - L1_TABLE_SIZE) & (L1_TABLE_SIZE - 1)) == 0
! 501: && kernel_l1pt.pv_pa == 0) {
! 502: valloc_pages(kernel_l1pt, L1_TABLE_SIZE / PAGE_SIZE);
! 503: } else {
! 504: valloc_pages(kernel_pt_table[loop1],
! 505: L2_TABLE_SIZE / PAGE_SIZE);
! 506: ++loop1;
! 507: }
! 508: }
! 509:
! 510: /* This should never be able to happen but better confirm that. */
! 511: if (!kernel_l1pt.pv_pa || (kernel_l1pt.pv_pa & (L1_TABLE_SIZE-1)) != 0)
! 512: panic("initarm: Failed to align the kernel page directory");
! 513:
! 514: /*
! 515: * Allocate a page for the system page mapped to V0x00000000
! 516: * This page will just contain the system vectors and can be
! 517: * shared by all processes.
! 518: */
! 519: alloc_pages(systempage.pv_pa, 1);
! 520:
! 521: /* Allocate stacks for all modes */
! 522: valloc_pages(irqstack, IRQ_STACK_SIZE);
! 523: valloc_pages(abtstack, ABT_STACK_SIZE);
! 524: valloc_pages(undstack, UND_STACK_SIZE);
! 525: valloc_pages(kernelstack, UPAGES);
! 526:
! 527: #ifdef VERBOSE_INIT_ARM
! 528: printf("IRQ stack: p0x%08lx v0x%08lx\n", irqstack.pv_pa,
! 529: irqstack.pv_va);
! 530: printf("ABT stack: p0x%08lx v0x%08lx\n", abtstack.pv_pa,
! 531: abtstack.pv_va);
! 532: printf("UND stack: p0x%08lx v0x%08lx\n", undstack.pv_pa,
! 533: undstack.pv_va);
! 534: printf("SVC stack: p0x%08lx v0x%08lx\n", kernelstack.pv_pa,
! 535: kernelstack.pv_va);
! 536: #endif
! 537:
! 538: /*
! 539: * XXX Defer this to later so that we can reclaim the memory
! 540: * XXX used by the RedBoot page tables.
! 541: */
! 542: alloc_pages(msgbufphys, round_page(MSGBUFSIZE) / PAGE_SIZE);
! 543:
! 544: /*
! 545: * Ok we have allocated physical pages for the primary kernel
! 546: * page tables
! 547: */
! 548:
! 549: #ifdef VERBOSE_INIT_ARM
! 550: printf("Creating L1 page table at 0x%08lx\n", kernel_l1pt.pv_pa);
! 551: #endif
! 552:
! 553: /*
! 554: * Now we start construction of the L1 page table
! 555: * We start by mapping the L2 page tables into the L1.
! 556: * This means that we can replace L1 mappings later on if necessary
! 557: */
! 558: l1pagetable = kernel_l1pt.pv_pa;
! 559:
! 560: #ifdef HIGH_VECT
! 561: /* Map the L2 pages tables in the L1 page table */
! 562: pmap_link_l2pt(l1pagetable, ARM_VECTORS_HIGH & ~(0x00400000 - 1),
! 563: &kernel_pt_table[KERNEL_PT_SYS]);
! 564: #else
! 565: /* Map the L2 pages tables in the L1 page table */
! 566: pmap_link_l2pt(l1pagetable, 0x00000000,
! 567: &kernel_pt_table[KERNEL_PT_SYS]);
! 568: #endif
! 569: for (loop = 0; loop < KERNEL_PT_KERNEL_NUM; loop++)
! 570: pmap_link_l2pt(l1pagetable, KERNEL_BASE + loop * 0x00400000,
! 571: &kernel_pt_table[KERNEL_PT_KERNEL + loop]);
! 572:
! 573: for (loop = 0; loop < KERNEL_PT_VMDATA_NUM; loop++)
! 574: pmap_link_l2pt(l1pagetable, KERNEL_VM_BASE + loop * 0x00400000,
! 575: &kernel_pt_table[KERNEL_PT_VMDATA + loop]);
! 576:
! 577: /* link devices */
! 578: pmap_link_l2pt(l1pagetable, 0xfd000000/* IQ80321_IOPXS_VBASE */,
! 579: &kernel_pt_table[KERNEL_PT_IOPXS]);
! 580:
! 581: /* update the top of the kernel VM */
! 582: pmap_curmaxkvaddr =
! 583: KERNEL_VM_BASE + (KERNEL_PT_VMDATA_NUM * 0x00400000);
! 584:
! 585: #ifdef VERBOSE_INIT_ARM
! 586: printf("Mapping kernel\n");
! 587: #endif
! 588:
! 589: /* Now we fill in the L2 pagetable for the kernel static code/data
! 590: * and the symbol table. */
! 591: {
! 592: extern char etext[];
! 593: #ifdef VERBOSE_INIT_ARM
! 594: extern char _end[];
! 595: #endif
! 596: size_t textsize = (u_int32_t) etext - KERNEL_TEXT_BASE;
! 597: size_t totalsize = esym - KERNEL_TEXT_BASE;
! 598: u_int logical;
! 599:
! 600: #ifdef VERBOSE_INIT_ARM
! 601: printf("kernelsize text %x total %x end %x esym %x\n",
! 602: textsize, totalsize, _end, esym);
! 603: #endif
! 604:
! 605: textsize = round_page(textsize);
! 606: totalsize = round_page(totalsize);
! 607:
! 608: logical = 0x00200000; /* offset of kernel in RAM */
! 609:
! 610: /* Update dump information */
! 611: cpu_kcore_hdr.kernelbase = KERNEL_BASE;
! 612: cpu_kcore_hdr.kerneloffs = logical;
! 613: cpu_kcore_hdr.staticsize = totalsize;
! 614:
! 615: logical += pmap_map_chunk(l1pagetable, KERNEL_BASE + logical,
! 616: physical_start + logical, textsize,
! 617: VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE);
! 618: pmap_map_chunk(l1pagetable, KERNEL_BASE + logical,
! 619: physical_start + logical, totalsize - textsize,
! 620: VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE);
! 621: }
! 622:
! 623: #ifdef VERBOSE_INIT_ARM
! 624: printf("Constructing L2 page tables\n");
! 625: #endif
! 626:
! 627: /* Map the stack pages */
! 628: pmap_map_chunk(l1pagetable, irqstack.pv_va, irqstack.pv_pa,
! 629: IRQ_STACK_SIZE * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE);
! 630: pmap_map_chunk(l1pagetable, abtstack.pv_va, abtstack.pv_pa,
! 631: ABT_STACK_SIZE * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE);
! 632: pmap_map_chunk(l1pagetable, undstack.pv_va, undstack.pv_pa,
! 633: UND_STACK_SIZE * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE);
! 634: pmap_map_chunk(l1pagetable, kernelstack.pv_va, kernelstack.pv_pa,
! 635: UPAGES * PAGE_SIZE, VM_PROT_READ | VM_PROT_WRITE, PTE_CACHE);
! 636:
! 637: pmap_map_chunk(l1pagetable, kernel_l1pt.pv_va, kernel_l1pt.pv_pa,
! 638: L1_TABLE_SIZE, VM_PROT_READ | VM_PROT_WRITE, PTE_PAGETABLE);
! 639:
! 640: for (loop = 0; loop < NUM_KERNEL_PTS; ++loop) {
! 641: pmap_map_chunk(l1pagetable, kernel_pt_table[loop].pv_va,
! 642: kernel_pt_table[loop].pv_pa, L2_TABLE_SIZE,
! 643: VM_PROT_READ|VM_PROT_WRITE, PTE_PAGETABLE);
! 644: }
! 645:
! 646: /* Map the vector page. */
! 647: #ifdef HIGH_VECT
! 648: pmap_map_entry(l1pagetable, ARM_VECTORS_HIGH, systempage.pv_pa,
! 649: VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE);
! 650: #else
! 651: pmap_map_entry(l1pagetable, vector_page, systempage.pv_pa,
! 652: VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE);
! 653: #endif
! 654:
! 655: /* XXX XXX */
! 656: pmap_devmap_bootstrap(l1pagetable, jornada_devmap);
! 657:
! 658: /*
! 659: * Now we have the real page tables in place so we can switch to them.
! 660: * Once this is done we will be running with the REAL kernel page
! 661: * tables.
! 662: */
! 663:
! 664: /*
! 665: * Update the physical_freestart/physical_freeend/free_pages
! 666: * variables.
! 667: */
! 668: {
! 669: physical_freestart = physical_start - KERNEL_BASE +
! 670: round_page(esym);
! 671: physical_freeend = physical_end;
! 672: free_pages =
! 673: (physical_freeend - physical_freestart) / PAGE_SIZE;
! 674: }
! 675: #ifdef VERBOSE_INIT_ARM
! 676: printf("physical_freestart %x end %x\n", physical_freestart,
! 677: physical_freeend);
! 678: #endif
! 679:
! 680: /* be a client to all domains */
! 681: //cpu_domains(0x55555555);
! 682: /* Switch tables */
! 683: #ifdef VERBOSE_INIT_ARM
! 684: printf("freestart = 0x%08lx, free_pages = %d (0x%x)\n",
! 685: physical_freestart, free_pages, free_pages);
! 686: printf("switching to new L1 page table @%#lx...", kernel_l1pt.pv_pa);
! 687: #endif
! 688:
! 689: /* set new intc register address so that splfoo() doesn't
! 690: touch illegal address. */
! 691: sa11x0_intr_bootstrap(SAIPIC_VBASE);
! 692:
! 693: #if 0
! 694: int i;
! 695: for (i = 0; i < 1000; i++)
! 696: *(uint32_t *)(JFB_VBASE + 0x20 + i * 4) = 0x00ff00ff;
! 697: cpu_domains((DOMAIN_CLIENT << (PMAP_DOMAIN_KERNEL*2)) | DOMAIN_CLIENT);
! 698: for (i = 0; i < 1000; i++)
! 699: *(uint32_t *)(JFB_VBASE + 0x20 + i * 4) = 0x0f000f00;
! 700: setttb(kernel_l1pt.pv_pa);
! 701: for (i = 0; i < 1000; i++)
! 702: *(uint32_t *)(JFB_VBASE + 0x20 + i * 4) = 0x00f000f0;
! 703: cpu_tlb_flushID();
! 704: for (i = 0; i < 1000; i++)
! 705: *(uint32_t *)(JFB_VBASE + 0x20 + i * 4) = 0x000f000f;
! 706: cpu_domains(DOMAIN_CLIENT << (PMAP_DOMAIN_KERNEL*2));
! 707: for (i = 0; i < 1000; i++)
! 708: *(uint32_t *)(JFB_VBASE + 0x20 + i * 4) = 0xffffffff;
! 709: #endif /* 0 */
! 710: //jfbcnattach(&sa11x0_bs_tag, JFB_VBASE);
! 711: /*
! 712: * Moved from cpu_startup() as data_abort_handler() references
! 713: * this during uvm init
! 714: */
! 715: proc0paddr = (struct user *)kernelstack.pv_va;
! 716: proc0.p_addr = proc0paddr;
! 717:
! 718: #ifdef VERBOSE_INIT_ARM
! 719: printf("bootstrap done.\n");
! 720: #endif
! 721:
! 722: #ifdef HIGH_VECT
! 723: arm32_vector_init(ARM_VECTORS_HIGH, ARM_VEC_ALL);
! 724: #else
! 725: arm32_vector_init(ARM_VECTORS_LOW, ARM_VEC_ALL);
! 726: #endif
! 727:
! 728: /*
! 729: * Pages were allocated during the secondary bootstrap for the
! 730: * stacks for different CPU modes.
! 731: * We must now set the r13 registers in the different CPU modes to
! 732: * point to these stacks.
! 733: * Since the ARM stacks use STMFD etc. we must set r13 to the top end
! 734: * of the stack memory.
! 735: */
! 736: #ifdef VERBOSE_INIT_ARM
! 737: printf("init subsystems: stacks ");
! 738: #endif
! 739:
! 740: set_stackptr(PSR_IRQ32_MODE,
! 741: irqstack.pv_va + IRQ_STACK_SIZE * PAGE_SIZE);
! 742: set_stackptr(PSR_ABT32_MODE,
! 743: abtstack.pv_va + ABT_STACK_SIZE * PAGE_SIZE);
! 744: set_stackptr(PSR_UND32_MODE,
! 745: undstack.pv_va + UND_STACK_SIZE * PAGE_SIZE);
! 746:
! 747: /*
! 748: * Well we should set a data abort handler.
! 749: * Once things get going this will change as we will need a proper
! 750: * handler.
! 751: * Until then we will use a handler that just panics but tells us
! 752: * why.
! 753: * Initialisation of the vectors will just panic on a data abort.
! 754: * This just fills in a slightly better one.
! 755: */
! 756: #ifdef VERBOSE_INIT_ARM
! 757: printf("vectors ");
! 758: #endif
! 759: data_abort_handler_address = (u_int)data_abort_handler;
! 760: prefetch_abort_handler_address = (u_int)prefetch_abort_handler;
! 761: undefined_handler_address = (u_int)undefinedinstruction_bounce;
! 762:
! 763: /* Initialise the undefined instruction handlers */
! 764: #ifdef VERBOSE_INIT_ARM
! 765: printf("undefined ");
! 766: #endif
! 767: undefined_init();
! 768:
! 769: /* Load memory into UVM. */
! 770: #ifdef VERBOSE_INIT_ARM
! 771: printf("page ");
! 772: #endif
! 773: uvm_setpagesize(); /* initialize PAGE_SIZE-dependent variables */
! 774: uvm_page_physload(atop(physical_freestart), atop(physical_freeend),
! 775: atop(physical_freestart), atop(physical_freeend),
! 776: VM_FREELIST_DEFAULT);
! 777:
! 778: /* Boot strap pmap telling it where the kernel page table is */
! 779: #ifdef VERBOSE_INIT_ARM
! 780: printf("pmap ");
! 781: #endif
! 782: pmap_bootstrap((pd_entry_t *)kernel_l1pt.pv_va, KERNEL_VM_BASE,
! 783: KERNEL_VM_BASE + KERNEL_VM_SIZE);
! 784:
! 785: /* Update dump information */
! 786: cpu_kcore_hdr.pmap_kernel_l1 = (u_int32_t)pmap_kernel()->pm_l1;
! 787: cpu_kcore_hdr.pmap_kernel_l2 = (u_int32_t)&(pmap_kernel()->pm_l2);
! 788:
! 789: cpu_domains((DOMAIN_CLIENT << (PMAP_DOMAIN_KERNEL*2)) | DOMAIN_CLIENT);
! 790: setttb(kernel_l1pt.pv_pa);
! 791: cpu_tlb_flushID();
! 792: cpu_domains(DOMAIN_CLIENT << (PMAP_DOMAIN_KERNEL*2));
! 793: /* Enable MMU, I-cache, D-cache, write buffer. */
! 794: cpufunc_control(0x337f, 0x107d);
! 795:
! 796:
! 797: /* TODO */
! 798: //cn_tab = NULL;
! 799: fakecninit(JFB_VBASE);
! 800:
! 801: /* Setup the IRQ system */
! 802: #ifdef VERBOSE_INIT_ARM
! 803: printf("irq ");
! 804: #endif
! 805: //i80321intc_intr_init();
! 806: sa11x0_init_interrupt_masks();
! 807:
! 808: #ifdef VERBOSE_INIT_ARM
! 809: printf("done.\n");
! 810: #endif
! 811:
! 812: #ifdef DDB
! 813: db_machine_init();
! 814:
! 815: /* Firmware doesn't load symbols. */
! 816: ddb_init();
! 817:
! 818: if (boothowto & RB_KDB)
! 819: Debugger();
! 820: #endif
! 821:
! 822: /* We return the new stack pointer address */
! 823: return(kernelstack.pv_va + USPACE_SVC_STACK_TOP);
! 824: }
! 825:
! 826: void
! 827: process_kernel_args(char *args)
! 828: {
! 829: char *cp = args;
! 830:
! 831: if (cp == NULL || *(int *)cp != BOOT_STRING_MAGIC) {
! 832: boothowto = RB_AUTOBOOT;
! 833: return;
! 834: }
! 835:
! 836: /* Eat the cookie */
! 837: *(int *)cp = 0;
! 838: cp += sizeof(int);
! 839:
! 840: boothowto = 0;
! 841:
! 842: /* Make a local copy of the bootargs */
! 843: strncpy(bootargs, cp, MAX_BOOT_STRING - sizeof(int));
! 844:
! 845: cp = bootargs;
! 846: boot_file = bootargs;
! 847:
! 848: /* Skip the kernel image filename */
! 849: while (*cp != ' ' && *cp != 0)
! 850: ++cp;
! 851:
! 852: if (*cp != 0)
! 853: *cp++ = 0;
! 854:
! 855: while (*cp == ' ')
! 856: ++cp;
! 857:
! 858: boot_args = cp;
! 859:
! 860: #if 0
! 861: printf("bootfile: %s\n", boot_file);
! 862: printf("bootargs: %s\n", boot_args);
! 863: #endif
! 864:
! 865: /* Setup pointer to boot flags */
! 866: while (*cp != '-')
! 867: if (*cp++ == '\0')
! 868: return;
! 869:
! 870: for (;*++cp;) {
! 871: int fl;
! 872:
! 873: fl = 0;
! 874: switch(*cp) {
! 875: case 'a':
! 876: fl |= RB_ASKNAME;
! 877: break;
! 878: case 'c':
! 879: fl |= RB_CONFIG;
! 880: break;
! 881: case 'd':
! 882: fl |= RB_KDB;
! 883: break;
! 884: case 's':
! 885: fl |= RB_SINGLE;
! 886: break;
! 887: default:
! 888: printf("unknown option `%c'\n", *cp);
! 889: break;
! 890: }
! 891: boothowto |= fl;
! 892: }
! 893: }
! 894:
! 895:
! 896: void
! 897: consinit(void)
! 898: {
! 899: #if 0
! 900: #if NSACOM > 0
! 901: static const bus_addr_t sacomcnaddrs[] = {
! 902: SACOM3_HW_BASE
! 903: };
! 904:
! 905: static int consinit_called;
! 906:
! 907: if (consinit_called != 0)
! 908: return;
! 909:
! 910: consinit_called = 1;
! 911:
! 912: /*
! 913: * Console devices are mapped VA==PA. Our devmap reflects
! 914: * this, so register it now so drivers can map the console
! 915: * device.
! 916: */
! 917: pmap_devmap_register(jornada_devmap);
! 918:
! 919: if (sacomcnattach(&sa11x0_bs_tag, sacomcnaddrs[0], 115200))
! 920: panic("can't init serial console @%lx", sacomcnaddrs[0]);
! 921: #endif
! 922: #endif /* 0 */
! 923: }
! 924:
! 925: void
! 926: fakecninit(bus_addr_t addr)
! 927: {
! 928: /*
! 929: * Early console initialization.
! 930: */
! 931: switch(addr) {
! 932: case SACOM3_HW_BASE:
! 933: case SACOM3_BASE:
! 934: #if NSACOM > 0
! 935: sacomfakecnattach();
! 936: #endif
! 937: break;
! 938: case JFB_BASE:
! 939: case JFB_VBASE:
! 940: #if NJFB > 0
! 941: jfbfakecnattach(addr);
! 942: #endif
! 943: break;
! 944: default:
! 945: panic("serial console not configured");
! 946: }
! 947: }
! 948:
! 949: void
! 950: board_startup(void)
! 951: {
! 952: if (boothowto & RB_CONFIG) {
! 953: #ifdef BOOT_CONFIG
! 954: user_config();
! 955: #else
! 956: printf("kernel does not support -c; continuing..\n");
! 957: #endif
! 958: }
! 959: }
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