[serial] Enable UART FIFOs

Escape sequences received via the serial console can fail since the cpu_nap() in getchar_timeout() can delay processing for more than the time it takes for a single character to arrive. Fix by enabling the UART FIFOs. Modified-by: Michael Brown <mcb30@ipxe.org> Signed-off-by: Michael Brown <mcb30@ipxe.org>
ipxe · Apr 22, 2014 · d644ad4 · d644ad4
1 parent 2788429
commit d644ad4
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/src/core/serial.c b/src/core/serial.c
@@ -204,8 +204,8 @@ static void serial_init ( void ) {
 	/* disable interrupts */
 	uart_writeb(0x0, UART_BASE + UART_IER);
 
-	/* disable fifo's */
-	uart_writeb(0x00, UART_BASE + UART_FCR);
+	/* enable fifos */
+	uart_writeb(0x01, UART_BASE + UART_FCR);
 
 	/* Set clear to send, so flow control works... */
 	uart_writeb((1<<1), UART_BASE + UART_MCR);