Initial revision
diff --git a/board/w7o/fsboot.c b/board/w7o/fsboot.c
new file mode 100644
index 0000000..800583d
--- /dev/null
+++ b/board/w7o/fsboot.c
@@ -0,0 +1,90 @@
+/*
+ * (C) Copyright 2001
+ * Wave 7 Optics, Inc.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include <config.h>
+#include <command.h>
+#include <cmd_elf.h>
+
+/*
+ * FIXME: Add code to test image and it's header.
+ */
+static int
+image_check(ulong addr)
+{
+ return valid_elf_image(addr);
+}
+
+void
+init_fsboot(void)
+{
+ char *envp;
+ ulong loadaddr;
+ ulong testaddr;
+ ulong alt_loadaddr;
+ char buf[9];
+
+ /*
+ * Get test image address
+ */
+ if ((envp = getenv("testaddr")) != NULL)
+ testaddr = simple_strtoul(envp, NULL, 16);
+ else
+ testaddr = -1;
+
+ /*
+ * Are we going to test boot and image?
+ */
+ if ((testaddr != -1) && image_check(testaddr)) {
+
+ /* Set alt_loadaddr */
+ alt_loadaddr = testaddr;
+ sprintf(buf, "%lX", alt_loadaddr);
+ setenv("alt_loadaddr", buf);
+
+ /* Clear test_addr */
+ setenv("testaddr", NULL);
+
+ /*
+ * Save current environment with alt_loadaddr,
+ * and cleared testaddr.
+ */
+ saveenv();
+
+ /*
+ * Setup temporary loadaddr to alt_loadaddr
+ * XXX - DO NOT SAVE ENVIRONMENT!
+ */
+ loadaddr = alt_loadaddr;
+ sprintf(buf, "%lX", loadaddr);
+ setenv("loadaddr", buf);
+
+ } else { /* Normal boot */
+ setenv("alt_loadaddr", NULL); /* Clear alt_loadaddr */
+ setenv("testaddr", NULL); /* Clear testaddr */
+ saveenv();
+ }
+
+ return;
+}
+
