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 5.3 (Berkeley) 06/01/90"; 19 #endif /* not lint */ 20 21 /* 22 * CMC Ethernet ``Microcode'' Loader. 23 */ 24 #include <stdio.h> 25 #include <a.out.h> 26 27 #include <sys/types.h> 28 #include <sys/file.h> 29 #include <sys/ioctl.h> 30 #include <tahoeif/if_enpreg.h> 31 32 char *dev; 33 34 main(argc, argv) 35 int argc; 36 char *argv[]; 37 { 38 int enp = -1, fd, first = 1, nostart = 0; 39 40 argc--, argv++; 41 if (argc > 0) { 42 enp = open(dev = argv[0], O_RDWR); 43 if (enp < 0) { 44 fprintf(stderr, "enpload: "); 45 perror(dev); 46 exit(-1); 47 } 48 argc--, argv++; 49 } 50 for (; argc > 0; argc--, argv++) { 51 if (strcmp(argv[0], "-s") == 0 || strcmp(argv[0], "-S") == 0) { 52 nostart++; 53 continue; 54 } 55 if (first) { 56 /* 57 * Reset device before first file is loaded. 58 */ 59 if (ioctl(enp, ENPIORESET) < 0) { 60 fprintf(stderr, "enpload: %s: ", dev); 61 perror("ioctl (ENPIORESET)"); 62 exit(-1); 63 } 64 first = !first; 65 } 66 if ((fd = open(argv[0], O_RDONLY)) < 0) { 67 fprintf(stderr, "enpload: "), perror(argv[0]); 68 exit(1); 69 } 70 enpload(enp, fd, argv[0]); 71 close(fd); 72 } 73 if (enp != -1 && !nostart && ioctl(enp, ENPIOGO) < 0) { 74 fprintf(stderr, "enpload: "); 75 perror("ioctl (ENPIOGO)"); 76 exit(-1); 77 } 78 exit(0); 79 } 80 81 #define RELO 0x03FFFF /* relocation offset */ 82 #define ENPMSTART 0x0 /* start of memory */ 83 #define BSIZE 512 /* buffer size */ 84 char buff[BSIZE]; 85 char zbuf[BSIZE]; 86 87 enpload(enp, fd, filename) 88 int enp, fd; 89 char *filename; 90 { 91 int cnt, size, lstart; 92 struct exec hdr; 93 94 if (read(fd, &hdr, sizeof (hdr)) != sizeof (hdr)) { 95 fprintf(stderr, "enpload: %s: Read short (header).\n", 96 filename); 97 exit(1); 98 } 99 if (N_BADMAG(hdr)) { 100 fprintf(stderr, "enpload: %s: Bad magic number.\n", filename); 101 exit(1); 102 } 103 size = hdr.a_text + hdr.a_data; 104 lstart = (ENPMSTART + (hdr.a_entry & RELO)) - 0x1000; 105 106 printf("%s: Loading %s...", dev, filename); 107 (void) lseek(enp, lstart + size, L_SET); 108 while (hdr.a_bss >= BSIZE) { 109 if (write(enp, zbuf, BSIZE) != BSIZE) { 110 fprintf(stderr, "enpload: Bss write error.\n"); 111 exit(-1); 112 } 113 hdr.a_bss -= BSIZE; 114 } 115 if (hdr.a_bss > 0 && write(enp, zbuf, hdr.a_bss) != hdr.a_bss) { 116 fprintf(stderr, "enpload: Bss write error.\n"); 117 exit(-1); 118 } 119 (void) lseek(enp, lstart, L_SET); 120 while (size > BSIZE) { 121 cnt = read(fd, buff, BSIZE); 122 size -= cnt; 123 if (write(enp, buff, cnt) != cnt) { 124 fprintf(stderr, "enpload: Write error.\n"); 125 exit(-1); 126 } 127 } 128 if (size > 0) { 129 cnt = read(fd, buff, size); 130 if (write(enp, buff, cnt) != cnt) { 131 fprintf(stderr, "enpload: Write error.\n"); 132 exit(-1); 133 } 134 } 135 printf("done.\n"); 136 } 137