date and time created 87/04/29 20:37:26 by sam

SCCS-vsn: old/enpload/enpload.c 5.1

diff --git a/usr/src/old/enpload/enpload.c b/usr/src/old/enpload/enpload.c
new file mode 100644 (file)
index 0000000..12f891d
--- /dev/null
+++ b/usr/src/old/enpload/enpload.c
@@ -0,0 +1,120 @@
+#ifndef lint
+static char sccsid[] = "@(#)enpload.c  5.1 (Berkeley from CCI) %G%";
+#endif
+
+/*
+ * CMC Ethernet ``Microcode'' Loader.
+ */
+#include <stdio.h>
+#include <a.out.h>
+
+#include <sys/types.h>
+#include <sys/file.h>
+#include <sys/ioctl.h>
+#include <tahoeif/if_enpreg.h>
+
+char   *dev;
+
+main(argc, argv)
+       int argc;
+       char *argv[];
+{
+       int enp = -1, fd, first = 1, nostart = 0;
+
+       argc--, argv++;
+       if (argc > 0) {
+               enp = open(dev = argv[0], O_RDWR);
+               if (enp < 0) {
+                       fprintf(stderr, "enpload: ");
+                       perror(dev);
+                       exit(-1);
+               }
+               argc--, argv++;
+       }
+       for (; argc > 0; argc--, argv++) {
+               if (strcmp(argv[0], "-s") == 0 || strcmp(argv[0], "-S") == 0) {
+                       nostart++;
+                       continue;
+               }
+               if (first) {
+                       /*
+                        * Reset device before first file is loaded.
+                        */
+                       if (ioctl(enp, ENPIORESET) < 0) {
+                               fprintf(stderr, "enpload: %s: ", dev);
+                               perror("ioctl (ENPIORESET)");
+                               exit(-1);
+                       }
+                       first = !first;
+               }
+               if ((fd = open(argv[0], O_RDONLY)) < 0) {
+                       fprintf(stderr, "enpload: "), perror(argv[0]);
+                       exit(1);
+               }
+               enpload(enp, fd, argv[0]);
+               close(fd);
+       }
+       if (enp != -1 && !nostart && ioctl(enp, ENPIOGO) < 0) {
+               fprintf(stderr, "enpload: ");
+               perror("ioctl (ENPIOGO)");
+               exit(-1);
+       }
+       exit(0);
+}
+
+#define        RELO            0x03FFFF        /* relocation offset */
+#define        ENPMSTART       0x0             /* start of memory */
+#define        BSIZE           512             /* buffer size */
+char   buff[BSIZE];
+char   zbuf[BSIZE];
+
+enpload(enp, fd, filename)
+       int enp, fd;
+       char *filename;
+{
+       int cnt, size, lstart;
+       struct exec hdr;
+
+       if (read(fd, &hdr, sizeof (hdr)) != sizeof (hdr)) {
+               fprintf(stderr, "enpload: %s: Read short (header).\n",
+                  filename);
+               exit(1);
+       }
+       if (N_BADMAG(hdr)) {
+               fprintf(stderr, "enpload: %s: Bad magic number.\n", filename);
+               exit(1);
+       }
+       size = hdr.a_text + hdr.a_data;
+       lstart = (ENPMSTART + (hdr.a_entry & RELO)) - 0x1000;
+
+       printf("%s: Loading %s...", dev, filename);
+       (void) lseek(enp, lstart + size, L_SET);
+       while (hdr.a_bss >= BSIZE) {
+               if (write(enp, zbuf, BSIZE) != BSIZE) {
+                       fprintf(stderr, "enpload: Bss write error.\n");
+                       exit(-1);
+               }
+               hdr.a_bss -= BSIZE;
+       }
+       if (hdr.a_bss > 0 && write(enp, zbuf, hdr.a_bss) != hdr.a_bss) {
+               fprintf(stderr, "enpload: Bss write error.\n");
+               exit(-1);
+       }
+       (void) lseek(enp, lstart, L_SET);
+       while (size > BSIZE) {
+               cnt = read(fd, buff, BSIZE);
+               size -= cnt;
+               if (write(enp, buff, cnt) != cnt) {
+                       fprintf(stderr, "enpload: Write error.\n");
+                       exit(-1);
+               }
+       }
+       if (size > 0) {
+               cnt = read(fd, buff, size);
+               if (write(enp, buff, cnt) != cnt) {
+                       fprintf(stderr, "enpload: Write error.\n");
+                       exit(-1);
+               }
+       }
+       printf("done.\n");
+}