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Annotation of researchv9/sys/boot/stand/bootxx.c, revision 1.1.1.2

1.1.1.2 ! root        1: #include <machine/sunromvec.h>
1.1       root        2: 
1.1.1.2 ! root        3: /* Dummy device table to satisfy external references */
        !             4: struct boottab *(devsw[]) = {(struct boottab *)0, };
1.1       root        5: 
                      6: int (*readfile()) ();
                      7: 
                      8: /*
                      9:  * Reads in the "real" boot program and jumps
                     10:  * to it.  If this attempt fails, prints "boot failed" and returns to its
                     11:  * caller.
                     12:  */
                     13: main()
                     14: {
                     15:        register struct bootparam *bp;
                     16:        register char *s, c;
                     17:        register int io;
                     18:        int (*addr)();
                     19: 
                     20:        extern struct boottab *(devsw[]);
                     21: 
                     22:        if (romp->v_bootparam == 0)
                     23:                bp = (struct bootparam *)0x2000;        /* Old Sun-1 address */
                     24:        else
                     25:                bp = *(romp->v_bootparam);              /* S-2: via romvec */
                     26: 
                     27:        /* If we were linked with a driver, use it in preference to PROM */
                     28:        if (*devsw)
                     29:                bp->bp_boottab = *devsw;
                     30: 
                     31:        s = bp->bp_argv[0];
                     32:        while (*s && *s != ')') s++;
                     33: 
                     34:        c = *s; *s = '\0';
                     35:        printf("Load: %s)boot\n", bp->bp_argv[0]);
                     36:        *s = c;
                     37: 
                     38:        io = physopen(bp, "boot", 0);
                     39: 
                     40:        if (io >= 0) {
                     41:                addr = readfile(io, 0);         /* Read silently */
                     42:                if ((int)addr != -1)
                     43:                        _exitto(addr);
                     44:        }
                     45:        printf("boot failed\n");
                     46:        return;
                     47: }

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