Separated out (and tidied up) shell banner code

src/hci/shell_banner.c

@@ -0,0 +1,65 @@
+/*
+ * Copyright (C) 2006 Michael Brown <mbrown@fensystems.co.uk>.
+ *
+ * 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 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., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <console.h>
+#include <latch.h>
+#include <gpxe/shell_banner.h>
+
+/** @file
+ *
+ * Shell startup banner
+ *
+ */
+
+#define BANNER_TIMEOUT ( 2 * TICKS_PER_SEC )
+
+#define NORMAL	"\033[0m"
+#define BOLD	"\033[1m"
+#define CYAN	"\033[36m"
+
+/**
+ * Print shell banner and prompt for shell entry
+ *
+ * @ret	enter_shell		User wants to enter shell
+ */
+int shell_banner ( void ) {
+	unsigned long timeout = ( currticks() + BANNER_TIMEOUT );
+	int key;
+	int enter_shell = 0;
+
+	/* Print welcome banner */
+	printf ( "\n\n\n" BOLD "gPXE " VERSION
+		 NORMAL " -- Open Source Boot Firmware -- "
+		 CYAN "http://etherboot.org" NORMAL "\n"
+		 "Press Ctrl-B for the gPXE command line..." );
+
+	/* Wait for key */
+	while ( currticks() < timeout ) {
+		if ( iskey() ) {
+			key = getchar();
+			if ( key == 0x02 /* Ctrl-B */ )
+				enter_shell = 1;
+			break;
+		}
+	}
+
+	/* Clear the "Press Ctrl-B" line */
+	printf ( "\r                                         \r" );
+
+	return enter_shell;
+}

src/include/gpxe/shell_banner.h

@@ -0,0 +1,12 @@
+#ifndef _GPXE_SHELL_BANNER_H
+#define _GPXE_SHELL_BANNER_H
+
+/** @file
+ *
+ * Shell startup banner
+ *
+ */
+
+extern int shell_banner ( void );
+
+#endif /* _GPXE_SHELL_BANNER_H */