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Annotation of sys/arch/mvmeppc/stand/libsa/exec_mvme.c, Revision 1.1.1.1

1.1       nbrk        1: /*     $OpenBSD: exec_mvme.c,v 1.8 2004/01/29 21:30:04 miod Exp $      */
                      2:
                      3: /*-
                      4:  * Copyright (c) 1982, 1986, 1990, 1993
                      5:  *     The Regents of the University of California.  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. Neither the name of the University nor the names of its contributors
                     16:  *    may be used to endorse or promote products derived from this software
                     17:  *    without specific prior written permission.
                     18:  *
                     19:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
                     20:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
                     21:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
                     22:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
                     23:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
                     24:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
                     25:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
                     26:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
                     27:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
                     28:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
                     29:  * SUCH DAMAGE.
                     30:  *
                     31:  *     @(#)boot.c      8.1 (Berkeley) 6/10/93
                     32:  */
                     33:
                     34: #include <sys/param.h>
                     35: #include <sys/reboot.h>
                     36: #include <sys/exec_elf.h>
                     37:
                     38: #include <machine/prom.h>
                     39:
                     40: #include <lib/libkern/libkern.h>
                     41: #include <lib/libsa/stand.h>
                     42: #include <lib/libsa/loadfile.h>
                     43:
                     44: #include "libsa.h"
                     45:
                     46: /*ARGSUSED*/
                     47: void
                     48: exec_mvme(file, flag)
                     49:        char    *file;
                     50:        int     flag;
                     51: {
                     52:        int fd;
                     53:        u_long marks[MARK_MAX];
                     54:        void (*entry)();
                     55:        u_long *entryp;
                     56:        void *esym;
                     57:        int bootdev;
                     58:
                     59: #ifdef DEBUG
                     60:        printf("exec_mvme: file=%s flag=0x%x cputyp=%x\n", file, flag, bugargs.cputyp);
                     61: #endif
                     62:
                     63:        fd = open(file, 0);
                     64:        if (fd < 0)
                     65:                return;
                     66:
                     67:        printf("Booting %s...", file);
                     68:        marks[MARK_START] = 0;
                     69:        if (loadfile(file, marks, LOAD_ALL) >= 0) {
                     70:                close(fd);
                     71:
                     72:                entryp = (u_long *)&entry;
                     73:                *entryp = marks[MARK_ENTRY];
                     74:                esym = (void *)marks[MARK_END];
                     75:
                     76:                printf("Start @ 0x%x\n", (unsigned int)entry);
                     77:                printf("Controller Address 0x%x\n", bugargs.ctrl_addr);
                     78:                if (flag & RB_HALT)
                     79:                        mvmeprom_return();
                     80:
                     81:                bootdev = (bugargs.ctrl_lun << 8) | (bugargs.dev_lun & 0xFF);
                     82:                /*
                     83:                 * Arguments to start on mvmeppc:
                     84:                 * r1 - stack provided by firmware/bootloader
                     85:                 * r3 - boot flags
                     86:                 * r4 - boot device
                     87:                 * r5 - firmware pointer (NULL for PPC1bug)
                     88:                 * r6 - arg list
                     89:                 * r7 - arg list length
                     90:                 * r8 - end of symbol table
                     91:                 */
                     92:                /*       r3                 r4       r5    r6    r7 r8 */
                     93:                (*entry)(flag, bootdev, NULL, NULL, 0, esym);
                     94:
                     95:                printf("exec: kernel returned!\n");
                     96:        } else {
                     97:                close(fd);
                     98:        }
                     99: }