[console] Add a timeout parameter to getkey()

Signed-off-by: Michael Brown <mcb30@ipxe.org>

src/core/getkey.c

 /**
  * Read character from console if available within timeout period
  *
- * @v timeout		Timeout period, in ticks
+ * @v timeout		Timeout period, in ticks (0=indefinite)
  * @ret character	Character read from console
  */
-int getchar_timeout ( unsigned long timeout ) {
+static int getchar_timeout ( unsigned long timeout ) {
 	unsigned long start = currticks();
 
-	while ( ( currticks() - start ) < timeout ) {
+	while ( ( timeout == 0 ) || ( ( currticks() - start ) < timeout ) ) {
 		step();
 		if ( iskey() )
 			return getchar();
 /**
  * Get single keypress
  *
+ * @v timeout		Timeout period, in ticks (0=indefinite)
  * @ret key		Key pressed
  *
  * The returned key will be an ASCII value or a KEY_XXX special
  * will return "special" keys (e.g. cursor keys) as a series of
  * characters forming an ANSI escape sequence.
  */
-int getkey ( void ) {
+int getkey ( unsigned long timeout ) {
 	int character;
 	unsigned int n = 0;
 
-	character = getchar();
+	character = getchar_timeout ( timeout );
 	if ( character != ESC )
 		return character;
 

src/hci/readline.c

 	buf[0] = '\0';
 
 	while ( 1 ) {
-		key = edit_string ( &string, getkey() );
+		key = edit_string ( &string, getkey ( 0 ) );
 		sync_console ( &string );
 		switch ( key ) {
 		case CR:

src/hci/shell_banner.c

 	printf ( "\nPress Ctrl-B for the iPXE command line..." );
 
 	/* Wait for key */
-	key = getchar_timeout ( ( BANNER_TIMEOUT * TICKS_PER_SEC ) / 10 );
+	key = getkey ( ( BANNER_TIMEOUT * TICKS_PER_SEC ) / 10 );
 
 	/* Clear the "Press Ctrl-B" line */
 	printf ( "\r                                         \r" );

src/hci/tui/login_ui.c

 
 		draw_editbox ( current_box );
 
-		key = getkey();
+		key = getkey ( 0 );
 		switch ( key ) {
 		case KEY_DOWN:
 			current_box = &password_box;

src/hci/tui/settings_ui.c

 		draw_setting ( &widget );
 		color_set ( CPAIR_NORMAL, NULL );
 
-		key = getkey();
+		key = getkey ( 0 );
 		if ( widget.editing ) {
 			key = edit_setting ( &widget, key );
 			switch ( key ) {

src/include/console.h

 
 extern void putchar ( int character );
 extern int getchar ( void );
-extern int getchar_timeout ( unsigned long timeout );
 extern int iskey ( void );
-extern int getkey ( void );
+extern int getkey ( unsigned long timeout );
 
 #endif /* CONSOLE_H */

src/usr/pxemenu.c

 #include <ipxe/dhcp.h>
 #include <ipxe/keys.h>
 #include <ipxe/timer.h>
-#include <ipxe/process.h>
 #include <ipxe/uri.h>
 #include <usr/dhcpmgmt.h>
 #include <usr/autoboot.h>
 		pxe_menu_draw_item ( menu, menu->selection, 1 );
 
 		/* Wait for keyboard input */
-		while ( ! iskey() )
-			step();
-		key = getkey();
+		key = getkey ( 0 );
 
 		/* Unhighlight currently selected item */
 		pxe_menu_draw_item ( menu, menu->selection, 0 );
 		if ( ! len )
 			len = printf ( " (%d)", menu->timeout );
 		if ( iskey() ) {
-			key = getkey();
+			key = getkey ( 0 );
 			if ( key == KEY_F8 ) {
 				/* Display menu */
 				printf ( "\n" );