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1.1 root 1: #ifndef lint
2: static char sccsid[] = "@(#)enpload.c 1.1 (Berkeley from CCI) 4/29/87";
3: #endif
4:
5: /*
6: * CMC Ethernet ``Microcode'' Loader.
7: */
8: #include <stdio.h>
9: #include <a.out.h>
10:
11: #include <sys/types.h>
12: #include <sys/file.h>
13: #include <sys/ioctl.h>
14: #include <tahoeif/if_enpreg.h>
15:
16: char *dev;
17:
18: main(argc, argv)
19: int argc;
20: char *argv[];
21: {
22: int enp = -1, fd, first = 1, nostart = 0;
23:
24: argc--, argv++;
25: if (argc > 0) {
26: enp = open(dev = argv[0], O_RDWR);
27: if (enp < 0) {
28: fprintf(stderr, "enpload: ");
29: perror(dev);
30: exit(-1);
31: }
32: argc--, argv++;
33: }
34: for (; argc > 0; argc--, argv++) {
35: if (strcmp(argv[0], "-s") == 0 || strcmp(argv[0], "-S") == 0) {
36: nostart++;
37: continue;
38: }
39: if (first) {
40: /*
41: * Reset device before first file is loaded.
42: */
43: if (ioctl(enp, ENPIORESET) < 0) {
44: fprintf(stderr, "enpload: %s: ", dev);
45: perror("ioctl (ENPIORESET)");
46: exit(-1);
47: }
48: first = !first;
49: }
50: if ((fd = open(argv[0], O_RDONLY)) < 0) {
51: fprintf(stderr, "enpload: "), perror(argv[0]);
52: exit(1);
53: }
54: enpload(enp, fd, argv[0]);
55: close(fd);
56: }
57: if (enp != -1 && !nostart && ioctl(enp, ENPIOGO) < 0) {
58: fprintf(stderr, "enpload: ");
59: perror("ioctl (ENPIOGO)");
60: exit(-1);
61: }
62: exit(0);
63: }
64:
65: #define RELO 0x03FFFF /* relocation offset */
66: #define ENPMSTART 0x0 /* start of memory */
67: #define BSIZE 512 /* buffer size */
68: char buff[BSIZE];
69: char zbuf[BSIZE];
70:
71: enpload(enp, fd, filename)
72: int enp, fd;
73: char *filename;
74: {
75: int cnt, size, lstart;
76: struct exec hdr;
77:
78: if (read(fd, &hdr, sizeof (hdr)) != sizeof (hdr)) {
79: fprintf(stderr, "enpload: %s: Read short (header).\n",
80: filename);
81: exit(1);
82: }
83: if (N_BADMAG(hdr)) {
84: fprintf(stderr, "enpload: %s: Bad magic number.\n", filename);
85: exit(1);
86: }
87: size = hdr.a_text + hdr.a_data;
88: lstart = (ENPMSTART + (hdr.a_entry & RELO)) - 0x1000;
89:
90: printf("%s: Loading %s...", dev, filename);
91: (void) lseek(enp, lstart + size, L_SET);
92: while (hdr.a_bss >= BSIZE) {
93: if (write(enp, zbuf, BSIZE) != BSIZE) {
94: fprintf(stderr, "enpload: Bss write error.\n");
95: exit(-1);
96: }
97: hdr.a_bss -= BSIZE;
98: }
99: if (hdr.a_bss > 0 && write(enp, zbuf, hdr.a_bss) != hdr.a_bss) {
100: fprintf(stderr, "enpload: Bss write error.\n");
101: exit(-1);
102: }
103: (void) lseek(enp, lstart, L_SET);
104: while (size > BSIZE) {
105: cnt = read(fd, buff, BSIZE);
106: size -= cnt;
107: if (write(enp, buff, cnt) != cnt) {
108: fprintf(stderr, "enpload: Write error.\n");
109: exit(-1);
110: }
111: }
112: if (size > 0) {
113: cnt = read(fd, buff, size);
114: if (write(enp, buff, cnt) != cnt) {
115: fprintf(stderr, "enpload: Write error.\n");
116: exit(-1);
117: }
118: }
119: printf("done.\n");
120: }
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