Common bootloader file for 'loadfile' performs same action as old exec main.

eg boot.conf

1 files changed, 119 insertions, 0 deletions

diff --git a/sys/stand/boot/boot_loadfile.c b/sys/stand/boot/boot_loadfile.c
new file mode 100644
index 00000000000..c05a801924e
--- /dev/null
+++ b/sys/stand/boot/boot_loadfile.c
@@ -0,0 +1,119 @@
+/*	$OpenBSD: boot_loadfile.c,v 1.1 2003/04/17 03:53:53 drahn Exp $	*/
+
+/*
+ * Copyright (c) 2003 Dale Rahn
+ * Copyright (c) 1997,1998 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.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by Michael Shalayeff.
+ * 4. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * 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 REGENTS OR CONTRIBUTORS 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 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 <sys/param.h>
+#include <sys/reboot.h>
+#include <sys/stat.h>
+#include <libsa.h>
+#include <lib/libsa/loadfile.h>
+
+#include "cmd.h"
+
+
+static const char *const kernels[] = {
+	"/bsd",
+	"/obsd",
+	"/bsd.old",
+	NULL
+};
+
+extern	const char version[];
+struct cmd_state cmd;
+
+void
+boot(bootdev)
+	dev_t	bootdev;
+{
+	register const char *bootfile = kernels[0];
+	register int i = 0, try = 0, st;
+	u_long marks[MARK_MAX];
+
+printf("bootdev %x\n", bootdev);
+	machdep();
+
+	printf(">> OpenBSD/" MACHINE " BOOT %s\n", version);
+
+	devboot(bootdev, cmd.bootdev);
+	strncpy(cmd.image, bootfile, sizeof(cmd.image));
+	cmd.boothowto = 0;
+	cmd.conf = "/etc/boot.conf";
+	cmd.addr = (void *)DEFAULT_KERNEL_ADDRESS;
+	cmd.timeout = 5;
+
+	st = read_conf();
+
+	while (1) {
+		if (st <= 0) /* no boot.conf, or no boot cmd in there */
+			do {
+				printf("boot> ");
+			} while(!getcmd());
+		st = 0;
+
+		printf("booting %s: ", cmd.path);
+		marks[MARK_START] = 0;
+		if (loadfile(cmd.path, marks, LOAD_ALL) >= 0)
+			break;
+
+		if (kernels[++i] == NULL) {
+			try += 1;
+			bootfile = kernels[i=0];
+		} else
+			bootfile = kernels[i];
+		strncpy(cmd.image, bootfile, sizeof(cmd.image));
+		printf(" failed(%d). will try %s\n", errno, bootfile);
+
+		if (try < 2)
+			cmd.timeout++;
+		else {
+			if (cmd.timeout)
+				printf("Turning timeout off.\n");
+			cmd.timeout = 0;
+		}
+	}
+
+	/* exec */
+	run_loadfile(marks, cmd.boothowto);
+
+	/* panic?? */
+}
+
+#ifdef _TEST
+int
+main()
+{
+	boot(0);
+	return 0;
+}
+#endif