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 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 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