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WIP: Add support for non-8250 built-in UARTs 

Change-Id: I5b412678bb8993633b3a610315d298cb20c705f3
Signed-off-by: David Hendricks <dhendrix@chromium.org>
Signed-off-by: Stefan Reinauer <reinauer@google.com>
Reviewed-on: http://review.coreboot.org/2011
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
This commit is contained in:
Stefan Reinauer 2012-12-07 17:31:37 -08:00 committed by Ronald G. Minnich
parent bb626346ea
commit 509f77277c
2 changed files with 53 additions and 4 deletions
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24
src/console/Kconfig
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@ -1,18 +1,33 @@
menu "Console"
# TODO: Rename to SERIAL_CONSOLE once Kconfig transition is complete.
config CONSOLE_SERIAL8250
config SERIAL_CONSOLE
bool "Serial port console output"
default y
help
Send coreboot debug output to a serial port
config CONSOLE_SERIAL8250
bool "Serial port console output (I/O mapped, 8250-compatible)"
depends on SERIAL_CONSOLE
depends on HAVE_UART_IO_MAPPED
default y
help
Send coreboot debug output to an I/O mapped serial port console.
config CONSOLE_SERIAL8250MEM
bool "Serial port console output (memory mapped)"
bool "Serial port console output (memory mapped, 8250-compatible)"
depends on SERIAL_CONSOLE
depends on HAVE_UART_MEMORY_MAPPED
help
Send coreboot debug output to a memory mapped serial port console.
config CONSOLE_SERIAL_NONSTANDARD_MEM
bool "Serial port console output (memory-mapped, device-specific)"
depends on SERIAL_CONSOLE
depends on HAVE_UART_MEMORY_MAPPED
help
Send coreboot debug output to a memory mapped serial port console
on a device-specific UART.
choice
prompt "Serial port"
default CONSOLE_SERIAL_COM1
@ -50,7 +65,7 @@ config TTYS0_BASE
choice
prompt "Baud rate"
default CONSOLE_SERIAL_115200
depends on CONSOLE_SERIAL8250 || CONSOLE_SERIAL8250MEM
depends on SERIAL_CONSOLE
config CONSOLE_SERIAL_115200
bool "115200"
@ -75,6 +90,7 @@ config CONSOLE_SERIAL_9600
endchoice
#FIXME(dhendrix): Change name to SERIAL_BAUD? (Stefan sayz: yes!!)
config TTYS0_BAUD
int
default 115200 if CONSOLE_SERIAL_115200

33
src/include/uart.h Normal file
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@ -0,0 +1,33 @@
/*
* This file is part of the coreboot project.
*
* Copyright (C) 2012 The ChromiumOS Authors. All rights reserved.
*
* 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; version 2 of the License.
*
* 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
* FIXME(dhendrix): This file contains generic prototypes for UART functions.
* The existing headers are too specific to the 8250, so we need a better
* abstraction for use with non-8250 UARTs.
*/
#ifndef UART_H
#define UART_H
unsigned char uart_rx_byte(void);
void uart_tx_byte(unsigned char data);
void uart_tx_flush(void);
void uart_init(void);
#endif /* UART_H */