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bootxx.c revision 1.1 
      1 /*	$NetBSD: bootxx.c,v 1.1 1999/07/08 11:48:06 tsubai Exp $	*/
      2 
      3 /*-
      4  * Copyright (C) 1999 Tsubai Masanari.  All rights reserved.
      5  *
      6  * Redistribution and use in source and binary forms, with or without
      7  * modification, are permitted provided that the following conditions
      8  * are met:
      9  * 1. Redistributions of source code must retain the above copyright
     10  *    notice, this list of conditions and the following disclaimer.
     11  * 2. Redistributions in binary form must reproduce the above copyright
     12  *    notice, this list of conditions and the following disclaimer in the
     13  *    documentation and/or other materials provided with the distribution.
     14  * 3. The name of the author may not be used to endorse or promote products
     15  *    derived from this software without specific prior written permission.
     16  *
     17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     18  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     19  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     20  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     21  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     22  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     26  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     27  */
     28 
     29 #include <lib/libkern/libkern.h>
     30 #include <lib/libsa/stand.h>
     31 #include <machine/romcall.h>
     32 
     33 #define MAXBLOCKNUM 64
     34 
     35 void (*entry_point)() = (void *)0;
     36 int block_size = 8192;
     37 int block_count = MAXBLOCKNUM;
     38 int block_table[MAXBLOCKNUM] = { 0 };
     39 
     40 #ifdef BOOTXX_DEBUG
     41 # define DPRINTF printf
     42 #else
     43 # define DPRINTF while (0) printf
     44 #endif
     45 
     46 char *devs[] = { "sd", "fh", "fd", NULL, NULL, "rd", "st" };
     47 
     48 void
     49 bootxx(a0, a1, a2, a3, a4, a5)
     50 	int a0, a1, a2, a3, a4, a5;
     51 {
     52 	int fd, blk, bs;
     53 	int ctlr, unit, part, type;
     54 	int i;
     55 	int bootdev = a1;
     56 	char *addr;
     57 	char devname[32];
     58 
     59 	printf("NetBSD/newsmips Primary Boot\n");
     60 
     61 	DPRINTF("\n");
     62 	DPRINTF("a0 %x\n", a0);
     63 	DPRINTF("a1 %x\n", a1);
     64 	DPRINTF("a2 %x (%s)\n", a2, (char *)a2);
     65 	DPRINTF("a3 %x\n", a3);
     66 	DPRINTF("a4 %x\n", a4);
     67 	DPRINTF("a5 %x\n", a5);
     68 
     69 	DPRINTF("block_size  = %d\n", block_size);
     70 	DPRINTF("block_count = %d\n", block_count);
     71 	DPRINTF("entry_point = %x\n", (int)entry_point);
     72 
     73 	/* sd(ctlr, lun, part, bus?, host) */
     74 
     75 	ctlr = BOOTDEV_CTLR(bootdev);
     76 	unit = BOOTDEV_UNIT(bootdev);
     77 	part = BOOTDEV_PART(bootdev);
     78 	type = BOOTDEV_TYPE(bootdev);
     79 
     80 	if (devs[type] == NULL) {
     81 		printf("unknown bootdev (0x%x)\n", bootdev);
     82 		return;
     83 	}
     84 
     85 	sprintf(devname, "%s(%d,%d,%d)", devs[type], ctlr, unit, part);
     86 
     87 	fd = rom_open(devname, 0);
     88 	if (fd == -1) {
     89 		printf("cannot open %s\n", devname);
     90 		return;
     91 	}
     92 
     93 	addr = (char *)entry_point;
     94 	bs = block_size;
     95 	DPRINTF("reading block:");
     96 	for (i = 0; i < block_count; i++) {
     97 		blk = block_table[i];
     98 
     99 		DPRINTF(" %d", blk);
    100 
    101 		rom_lseek(fd, blk * 512, 0);
    102 		rom_read(fd, addr, bs);
    103 		addr += bs;
    104 	}
    105 	DPRINTF(" done\n");
    106 	rom_close(fd);
    107 
    108 	(*entry_point)(a0, a1, a2, a3);
    109 }
    110 
    111 void
    112 putchar(x)
    113 	int x;
    114 {
    115 	char c = x;
    116 
    117 	rom_write(1, &c, 1);
    118 }
    119