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bootxx.c revision 1.7 
      1 /*	$NetBSD: bootxx.c,v 1.7 2004/12/11 03:32:27 tsutsui Exp $	*/
      2 
      3 /*-
      4  * Copyright (C) 1999 Izumi Tsutsui.  All rights reserved.
      5  * Copyright (C) 1999 Tsubai Masanari.  All rights reserved.
      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 the author may not be used to endorse or promote products
     16  *    derived from this software without specific prior written permission.
     17  *
     18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     19  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     20  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     21  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     22  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     23  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     24  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     25  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     26  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     27  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     28  */
     29 
     30 #include <lib/libkern/libkern.h>
     31 #include <lib/libsa/stand.h>
     32 #include <machine/romcall.h>
     33 
     34 #include <sys/bootblock.h>
     35 
     36 struct shared_bbinfo bbinfo = {
     37 	{ NEWS68K_BBINFO_MAGIC },	/* bbi_magic[] */
     38 	0,				/* bbi_block_size */
     39 	SHARED_BBINFO_MAXBLOCKS,	/* bbi_block_count */
     40 	{ 0 },				/* bbi_block_table[] */
     41 };
     42 
     43 #ifndef DEFAULT_ENTRY_POINT
     44 #define DEFAULT_ENTRY_POINT	0x003e0000
     45 #endif
     46 void (*entry_point)(uint32_t, uint32_t, uint32_t, uint32_t) =
     47     (void *)DEFAULT_ENTRY_POINT;
     48 
     49 #ifdef BOOTXX_DEBUG
     50 # define DPRINTF printf
     51 #else
     52 # define DPRINTF while (0) printf
     53 #endif
     54 
     55 char *devs[] = { "hd", "fh", "fd", NULL, NULL, "rd", "st" };
     56 
     57 void
     58 bootxx(uint32_t d4, uint32_t d5, uint32_t d6, uint32_t d7)
     59 {
     60 	int fd, blk, bs;
     61 	int ctlr, unit, part, type;
     62 	int i;
     63 	int bootdev = d6;
     64 	char *addr;
     65 	char devname[32];
     66 
     67 	printf("NetBSD/news68k Primary Boot\n");
     68 
     69 	DPRINTF("\n");
     70 	DPRINTF("d4 %x\n", d4);
     71 	DPRINTF("d5 %x (%s)\n", d5, (char *)d5);
     72 	DPRINTF("d6 %x\n", d6);
     73 	DPRINTF("d7 %x\n", d7);
     74 
     75 	DPRINTF("block_size  = %d\n", bbinfo.bbi_block_size);
     76 	DPRINTF("block_count = %d\n", bbinfo.bbi_block_count);
     77 	DPRINTF("entry_point = %p\n", entry_point);
     78 
     79 	/* sd(ctlr, lun, part, bus?, host) */
     80 
     81 	ctlr = BOOTDEV_CTLR(bootdev);
     82 	unit = BOOTDEV_UNIT(bootdev);
     83 	part = BOOTDEV_PART(bootdev);
     84 	type = BOOTDEV_TYPE(bootdev);
     85 
     86 	if (devs[type] == NULL) {
     87 		printf("unknown bootdev (0x%x)\n", bootdev);
     88 		return;
     89 	}
     90 
     91 	sprintf(devname, "%s(%d,%d,%d)", devs[type], ctlr, unit, part);
     92 
     93 	fd = rom_open(devname, 0);
     94 	if (fd == -1) {
     95 		printf("cannot open %s\n", devname);
     96 		return;
     97 	}
     98 
     99 	addr = (char *)entry_point;
    100 	bs = bbinfo.bbi_block_size;
    101 	DPRINTF("reading block:");
    102 	for (i = 0; i < bbinfo.bbi_block_count; i++) {
    103 		blk = bbinfo.bbi_block_table[i];
    104 
    105 		DPRINTF(" %d", blk);
    106 
    107 		rom_lseek(fd, blk * 512, 0);
    108 		rom_read(fd, addr, bs);
    109 		addr += bs;
    110 	}
    111 	DPRINTF(" done\n");
    112 	rom_close(fd);
    113 
    114 	(*entry_point)(d4, d5, d6, d7);
    115 	DPRINTF("bootxx returned?\n");
    116 }
    117