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Annotation of 43BSDReno/sbin/enpload/enpload.c, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1988 The Regents of the University of California.
        !             3:  * All rights reserved.
        !             4:  *
        !             5:  * This code is derived from software contributed to Berkeley by
        !             6:  * Computer Consoles Inc.
        !             7:  *
        !             8:  * Redistribution and use in source and binary forms are permitted
        !             9:  * provided that: (1) source distributions retain this entire copyright
        !            10:  * notice and comment, and (2) distributions including binaries display
        !            11:  * the following acknowledgement:  ``This product includes software
        !            12:  * developed by the University of California, Berkeley and its contributors''
        !            13:  * in the documentation or other materials provided with the distribution
        !            14:  * and in all advertising materials mentioning features or use of this
        !            15:  * software. Neither the name of the University nor the names of its
        !            16:  * contributors may be used to endorse or promote products derived
        !            17:  * from this software without specific prior written permission.
        !            18:  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
        !            19:  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
        !            20:  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
        !            21:  */
        !            22: 
        !            23: #ifndef lint
        !            24: char copyright[] =
        !            25: "@(#) Copyright (c) 1988 The Regents of the University of California.\n\
        !            26:  All rights reserved.\n";
        !            27: #endif /* not lint */
        !            28: 
        !            29: #ifndef lint
        !            30: static char sccsid[] = "@(#)enpload.c  5.3 (Berkeley) 6/1/90";
        !            31: #endif /* not lint */
        !            32: 
        !            33: /*
        !            34:  * CMC Ethernet ``Microcode'' Loader.
        !            35:  */
        !            36: #include <stdio.h>
        !            37: #include <a.out.h>
        !            38: 
        !            39: #include <sys/types.h>
        !            40: #include <sys/file.h>
        !            41: #include <sys/ioctl.h>
        !            42: #include <tahoeif/if_enpreg.h>
        !            43: 
        !            44: char   *dev;
        !            45: 
        !            46: main(argc, argv)
        !            47:        int argc;
        !            48:        char *argv[];
        !            49: {
        !            50:        int enp = -1, fd, first = 1, nostart = 0;
        !            51: 
        !            52:        argc--, argv++;
        !            53:        if (argc > 0) {
        !            54:                enp = open(dev = argv[0], O_RDWR);
        !            55:                if (enp < 0) {
        !            56:                        fprintf(stderr, "enpload: ");
        !            57:                        perror(dev);
        !            58:                        exit(-1);
        !            59:                }
        !            60:                argc--, argv++;
        !            61:        }
        !            62:        for (; argc > 0; argc--, argv++) {
        !            63:                if (strcmp(argv[0], "-s") == 0 || strcmp(argv[0], "-S") == 0) {
        !            64:                        nostart++;
        !            65:                        continue;
        !            66:                }
        !            67:                if (first) {
        !            68:                        /*
        !            69:                         * Reset device before first file is loaded.
        !            70:                         */
        !            71:                        if (ioctl(enp, ENPIORESET) < 0) {
        !            72:                                fprintf(stderr, "enpload: %s: ", dev);
        !            73:                                perror("ioctl (ENPIORESET)");
        !            74:                                exit(-1);
        !            75:                        }
        !            76:                        first = !first;
        !            77:                }
        !            78:                if ((fd = open(argv[0], O_RDONLY)) < 0) {
        !            79:                        fprintf(stderr, "enpload: "), perror(argv[0]);
        !            80:                        exit(1);
        !            81:                }
        !            82:                enpload(enp, fd, argv[0]);
        !            83:                close(fd);
        !            84:        }
        !            85:        if (enp != -1 && !nostart && ioctl(enp, ENPIOGO) < 0) {
        !            86:                fprintf(stderr, "enpload: ");
        !            87:                perror("ioctl (ENPIOGO)");
        !            88:                exit(-1);
        !            89:        }
        !            90:        exit(0);
        !            91: }
        !            92: 
        !            93: #define        RELO            0x03FFFF        /* relocation offset */
        !            94: #define        ENPMSTART       0x0             /* start of memory */
        !            95: #define        BSIZE           512             /* buffer size */
        !            96: char   buff[BSIZE];
        !            97: char   zbuf[BSIZE];
        !            98: 
        !            99: enpload(enp, fd, filename)
        !           100:        int enp, fd;
        !           101:        char *filename;
        !           102: {
        !           103:        int cnt, size, lstart;
        !           104:        struct exec hdr;
        !           105: 
        !           106:        if (read(fd, &hdr, sizeof (hdr)) != sizeof (hdr)) {
        !           107:                fprintf(stderr, "enpload: %s: Read short (header).\n",
        !           108:                   filename);
        !           109:                exit(1);
        !           110:        }
        !           111:        if (N_BADMAG(hdr)) {
        !           112:                fprintf(stderr, "enpload: %s: Bad magic number.\n", filename);
        !           113:                exit(1);
        !           114:        }
        !           115:        size = hdr.a_text + hdr.a_data;
        !           116:        lstart = (ENPMSTART + (hdr.a_entry & RELO)) - 0x1000;
        !           117: 
        !           118:        printf("%s: Loading %s...", dev, filename);
        !           119:        (void) lseek(enp, lstart + size, L_SET);
        !           120:        while (hdr.a_bss >= BSIZE) {
        !           121:                if (write(enp, zbuf, BSIZE) != BSIZE) {
        !           122:                        fprintf(stderr, "enpload: Bss write error.\n");
        !           123:                        exit(-1);
        !           124:                }
        !           125:                hdr.a_bss -= BSIZE;
        !           126:        }
        !           127:        if (hdr.a_bss > 0 && write(enp, zbuf, hdr.a_bss) != hdr.a_bss) {
        !           128:                fprintf(stderr, "enpload: Bss write error.\n");
        !           129:                exit(-1);
        !           130:        }
        !           131:        (void) lseek(enp, lstart, L_SET);
        !           132:        while (size > BSIZE) {
        !           133:                cnt = read(fd, buff, BSIZE);
        !           134:                size -= cnt;
        !           135:                if (write(enp, buff, cnt) != cnt) {
        !           136:                        fprintf(stderr, "enpload: Write error.\n");
        !           137:                        exit(-1);
        !           138:                }
        !           139:        }
        !           140:        if (size > 0) {
        !           141:                cnt = read(fd, buff, size);
        !           142:                if (write(enp, buff, cnt) != cnt) {
        !           143:                        fprintf(stderr, "enpload: Write error.\n");
        !           144:                        exit(-1);
        !           145:                }
        !           146:        }
        !           147:        printf("done.\n");
        !           148: }

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