projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| 3446b677 | 1 | #ifndef lint |
| d3101146 | 2 | static char sccsid[] = "@(#)enpload.c 5.3 (Berkeley from CCI) %G%"; |
| 3446b677 SL |
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 | } |