146 lines
4.2 KiB
C
146 lines
4.2 KiB
C
/* $NetBSD: boot.c,v 1.9 2003/11/21 19:44:53 tsutsui Exp $ */
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/*-
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* Copyright (C) 1999 Izumi Tsutsui. All rights reserved.
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* Copyright (C) 1999 Tsubai Masanari. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <lib/libkern/libkern.h>
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#include <lib/libsa/stand.h>
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#include <lib/libsa/loadfile.h>
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#include <machine/romcall.h>
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extern void ICIA(void);
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/* version strings in vers.c (generated by newvers.sh) */
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extern const char bootprog_name[];
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extern const char bootprog_rev[];
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extern const char bootprog_date[];
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extern const char bootprog_maker[];
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char *devs[] = { "hd", "fh", "fd", NULL, NULL, "rd", "st" };
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char *kernels[] = { "/netbsd", "/netbsd.gz", NULL };
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#ifdef BOOT_DEBUG
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# define DPRINTF printf
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#else
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# define DPRINTF while (0) printf
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#endif
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void
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boot(d4, d5, d6, d7)
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u_int32_t d4, d5, d6, d7;
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{
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int fd, i;
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int ctlr, unit, part, type;
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u_int32_t bootdev = d6;
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char *netbsd = (char *)d5;
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u_long marks[MARK_MAX];
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static char devname[32], file[32];
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void (*entry)(void);
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printf("%s Secondary Boot, Revision %s\n",
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bootprog_name, bootprog_rev);
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printf("(%s, %s)\n", bootprog_maker, bootprog_date);
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/* bootname is "boot" by default. */
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if (netbsd == NULL || strcmp(netbsd, "boot") == 0 ||
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strcmp(netbsd, "/boot") == 0)
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netbsd = "";
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DPRINTF("howto = 0x%x\n", d7);
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DPRINTF("bootdev = 0x%x\n", bootdev);
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DPRINTF("bootname = %s\n", netbsd);
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DPRINTF("maxmem = 0x%x\n", d4);
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#define SET_MAGIC(bootdev, magic) ((bootdev & 0x0fffffff)| (magic << 28))
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/* PROM monitor passes 0xa, but NEWS-OS /boot passed 0x5... */
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bootdev = SET_MAGIC(bootdev, 5);
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ctlr = BOOTDEV_CTLR(bootdev);
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unit = BOOTDEV_UNIT(bootdev);
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part = BOOTDEV_PART(bootdev);
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type = BOOTDEV_TYPE(bootdev);
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marks[MARK_START] = 0;
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if (devs[type] == NULL) {
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printf("unknown bootdev (0x%x)\n", bootdev);
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return;
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}
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sprintf(devname, "%s(%d,%d,%d)", devs[type], ctlr, unit, part);
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printf("Booting %s%s\n", devname, netbsd);
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/* use user specified kernel name if exists */
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if (*netbsd) {
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kernels[0] = netbsd;
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kernels[1] = NULL;
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}
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for (i = 0; kernels[i]; i++) {
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sprintf(file, "%s%s", devname, kernels[i]);
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DPRINTF("trying %s...\n", file);
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fd = loadfile(file, marks, LOAD_KERNEL);
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if (fd != -1)
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break;
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}
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if (kernels[i] == NULL) {
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#if 0 /* bootxx() may be overrided by loaded kernel */
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return;
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#else
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rom_halt();
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/* NOTREACHED */
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#endif
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}
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DPRINTF("entry = 0x%x\n", (int)marks[MARK_ENTRY]);
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DPRINTF("ssym = 0x%x\n", (int)marks[MARK_SYM]);
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DPRINTF("esym = 0x%x\n", (int)marks[MARK_END]);
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entry = (void *)marks[MARK_ENTRY];
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printf("\n");
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ICIA();
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__asm __volatile ("movl %0,%%d7" : : "m" (d7));
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__asm __volatile ("movl %0,%%d6" : : "m" (bootdev));
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__asm __volatile ("movl %0,%%d5" : : "m" (netbsd));
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__asm __volatile ("movl %0,%%d4" : : "m" (d4));
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__asm __volatile ("movl %0,%%d2" : : "m" (marks[MARK_END]));
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(*entry)();
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}
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void
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_rtt()
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{
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rom_halt();
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for (;;)
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;
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/* NOTREACHED */
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}
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