david/ipxe
david/ipxe
Archived
1
0
Fork 0
Code

[serial] Enable UART FIFOs

Browse Source 
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>
This commit is contained in:
Peter Pickford 2014-04-22 13:45:42 +01:00 committed by Michael Brown
parent 27884298a3
commit d644ad41f5
1 changed files with 2 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
src/core/serial.c
View File

@ -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);