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 * %sccs.include.redist.c%
9 */
10
11 #ifndef lint
12 char copyright[] =
13 "@(#) Copyright (c) 1988 The Regents of the University of California.\n\
14 All rights reserved.\n";
15 #endif /* not lint */
16
17 #ifndef lint
18 static char sccsid[] = "@(#)enpload.c 5.4 (Berkeley) 01/14/91";
19 #endif /* not lint */
20
21 /*
22 * CMC Ethernet ``Microcode'' Loader.
23 */
24 #include <sys/types.h>
25 #include <sys/file.h>
26 #include <sys/ioctl.h>
27 #include <tahoe/if/if_enpreg.h>
28 #include <stdio.h>
29 #include <a.out.h>
30
31 char *dev;
32
main(argc,argv)33 main(argc, argv)
34 int argc;
35 char *argv[];
36 {
37 int enp = -1, fd, first = 1, nostart = 0;
38
39 argc--, argv++;
40 if (argc > 0) {
41 enp = open(dev = argv[0], O_RDWR);
42 if (enp < 0) {
43 fprintf(stderr, "enpload: ");
44 perror(dev);
45 exit(-1);
46 }
47 argc--, argv++;
48 }
49 for (; argc > 0; argc--, argv++) {
50 if (strcmp(argv[0], "-s") == 0 || strcmp(argv[0], "-S") == 0) {
51 nostart++;
52 continue;
53 }
54 if (first) {
55 /*
56 * Reset device before first file is loaded.
57 */
58 if (ioctl(enp, ENPIORESET) < 0) {
59 fprintf(stderr, "enpload: %s: ", dev);
60 perror("ioctl (ENPIORESET)");
61 exit(-1);
62 }
63 first = !first;
64 }
65 if ((fd = open(argv[0], O_RDONLY)) < 0) {
66 fprintf(stderr, "enpload: "), perror(argv[0]);
67 exit(1);
68 }
69 enpload(enp, fd, argv[0]);
70 close(fd);
71 }
72 if (enp != -1 && !nostart && ioctl(enp, ENPIOGO) < 0) {
73 fprintf(stderr, "enpload: ");
74 perror("ioctl (ENPIOGO)");
75 exit(-1);
76 }
77 exit(0);
78 }
79
80 #define RELO 0x03FFFF /* relocation offset */
81 #define ENPMSTART 0x0 /* start of memory */
82 #define BSIZE 512 /* buffer size */
83 char buff[BSIZE];
84 char zbuf[BSIZE];
85
enpload(enp,fd,filename)86 enpload(enp, fd, filename)
87 int enp, fd;
88 char *filename;
89 {
90 int cnt, size, lstart;
91 struct exec hdr;
92
93 if (read(fd, &hdr, sizeof (hdr)) != sizeof (hdr)) {
94 fprintf(stderr, "enpload: %s: Read short (header).\n",
95 filename);
96 exit(1);
97 }
98 if (N_BADMAG(hdr)) {
99 fprintf(stderr, "enpload: %s: Bad magic number.\n", filename);
100 exit(1);
101 }
102 size = hdr.a_text + hdr.a_data;
103 lstart = (ENPMSTART + (hdr.a_entry & RELO)) - 0x1000;
104
105 printf("%s: Loading %s...", dev, filename);
106 (void) lseek(enp, lstart + size, L_SET);
107 while (hdr.a_bss >= BSIZE) {
108 if (write(enp, zbuf, BSIZE) != BSIZE) {
109 fprintf(stderr, "enpload: Bss write error.\n");
110 exit(-1);
111 }
112 hdr.a_bss -= BSIZE;
113 }
114 if (hdr.a_bss > 0 && write(enp, zbuf, hdr.a_bss) != hdr.a_bss) {
115 fprintf(stderr, "enpload: Bss write error.\n");
116 exit(-1);
117 }
118 (void) lseek(enp, lstart, L_SET);
119 while (size > BSIZE) {
120 cnt = read(fd, buff, BSIZE);
121 size -= cnt;
122 if (write(enp, buff, cnt) != cnt) {
123 fprintf(stderr, "enpload: Write error.\n");
124 exit(-1);
125 }
126 }
127 if (size > 0) {
128 cnt = read(fd, buff, size);
129 if (write(enp, buff, cnt) != cnt) {
130 fprintf(stderr, "enpload: Write error.\n");
131 exit(-1);
132 }
133 }
134 printf("done.\n");
135 }
136