Enter pxeboot on amd64. Initially intended to support network installs

using bsd.rd over TFTP.

ok deraadt@

1 files changed, 217 insertions, 0 deletions

diff --git a/sys/arch/amd64/stand/pxeboot/devopen.c b/sys/arch/amd64/stand/pxeboot/devopen.c
new file mode 100644
index 00000000000..264edfecab9
--- /dev/null
+++ b/sys/arch/amd64/stand/pxeboot/devopen.c
@@ -0,0 +1,217 @@
+/*	$OpenBSD: devopen.c,v 1.1 2004/03/21 21:37:41 tom Exp $	*/
+
+/*
+ * Copyright (c) 1994 Tom Cosgrove
+ * Copyright (c) 1996-1999 Michael Shalayeff
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR OR HIS RELATIVES BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF MIND, USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+ * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
+ * THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "libsa.h"
+#include "biosdev.h"
+#include <sys/param.h>
+#include <dev/cons.h>
+
+extern int debug;
+
+extern char *fs_name[];
+extern int nfsname;
+extern struct devsw netsw[];
+
+/* XXX use slot for 'rd' for 'hd' pseudo-device */
+const char bdevs[][4] = {
+	"wd", "", "fd", "wt", "sd", "st", "cd", "mcd",
+	"", "", "", "", "", "", "", "scd", "", "hd", ""
+};
+const int nbdevs = NENTS(bdevs);
+
+const char cdevs[][4] = {
+	"cn", "", "", "", "", "", "", "",
+	"com", "", "", "", "pc"
+};
+const int ncdevs = NENTS(cdevs);
+
+/* pass dev_t to the open routines */
+int
+devopen(struct open_file *f, const char *fname, char **file)
+{
+	struct devsw *dp = devsw;
+	char *p;
+	char *stripdev;
+	int i, l;
+	int rc = 1;
+
+	*file = (char *)fname;
+
+#ifdef DEBUG
+	if (debug)
+		printf("devopen(%s):", fname);
+#endif
+
+	/* Make sure we have a prefix, e.g. hd0a: or tftp:. */
+	for (p = (char *)fname; *p != ':' && *p != '\0'; ) p++;
+	if (*p != ':')
+		return 1;
+	stripdev = p + 1;
+
+	l = p - fname;			/* Length of device prefix. */
+	for (i = 0; i < nfsname; i++) {
+		if ((fs_name[i] != NULL) &&
+		    (strncmp(fname, fs_name[i], l) == 0)) {
+
+			/* Force oopen() etc to use this filesystem. */
+			f->f_ops = &file_system[i];
+			f->f_dev = dp = &netsw[0];
+
+			rc = (*dp->dv_open)(f, NULL);
+			if (rc == 0)
+				*file = stripdev;
+			else
+				f->f_dev = NULL;
+#ifdef DEBUG
+			if (debug)
+				putchar('\n');
+#endif
+			return rc;
+		}
+	}
+
+	for (i = 0; i < ndevs && rc != 0; dp++, i++) {
+#ifdef DEBUG
+		if (debug)
+			printf(" %s: ", dp->dv_name);
+#endif
+		if ((rc = (*dp->dv_open)(f, file)) == 0) {
+			f->f_dev = dp;
+			return 0;
+		}
+#ifdef DEBUG
+		else if (debug)
+			printf("%d", rc);
+#endif
+
+	}
+#ifdef DEBUG
+	if (debug)
+		putchar('\n');
+#endif
+
+	if ((f->f_flags & F_NODEV) == 0)
+		f->f_dev = dp;
+
+	return rc;
+}
+
+void
+devboot(dev_t bootdev, char *p)
+{
+	*p++ = 't';
+	*p++ = 'f';
+	*p++ = 't';
+	*p++ = 'p';
+	*p = '\0';
+}
+
+int pch_pos = 0;
+
+void
+putchar(int c)
+{
+	switch (c) {
+	case '\177':	/* DEL erases */
+		cnputc('\b');
+		cnputc(' ');
+	case '\b':
+		cnputc('\b');
+		if (pch_pos)
+			pch_pos--;
+		break;
+	case '\t':
+		do
+			cnputc(' ');
+		while (++pch_pos % 8);
+		break;
+	case '\n':
+	case '\r':
+		cnputc(c);
+		pch_pos=0;
+		break;
+	default:
+		cnputc(c);
+		pch_pos++;
+		break;
+	}
+}
+
+int
+getchar(void)
+{
+	register int c = cngetc();
+
+	if (c == '\r')
+		c = '\n';
+
+	if ((c < ' ' && c != '\n') || c == '\177')
+		return c;
+
+	putchar(c);
+
+	return c;
+}
+
+char ttyname_buf[8];
+
+char *
+ttyname(int fd)
+{
+	snprintf(ttyname_buf, sizeof ttyname_buf, "%s%d",
+	    cdevs[major(cn_tab->cn_dev)], minor(cn_tab->cn_dev));
+
+	return ttyname_buf;
+}
+
+dev_t
+ttydev(char *name)
+{
+	int i, unit = -1;
+	char *no = name + strlen(name) - 1;
+
+	while (no >= name && *no >= '0' && *no <= '9')
+		unit = (unit < 0 ? 0 : (unit * 10)) + *no-- - '0';
+	if (no < name || unit < 0)
+		return NODEV;
+	for (i = 0; i < ncdevs; i++)
+		if (strncmp(name, cdevs[i], no - name + 1) == 0)
+			return (makedev(i, unit));
+	return NODEV;
+}
+
+int
+cnspeed(dev_t dev, int sp)
+{
+	if (major(dev) == 8)	/* comN */
+		return (comspeed(dev, sp));
+
+	/* pc0 and anything else */
+	return 9600;
+}