Add support for memory mapped UARTs to coreboot and add the OXPCIe952 as an

example.

This newer version reflects the recent changes to further simplify the console
code and partly gets rid of some hacks in the previous version.

Signed-off-by: Stefan Reinauer <reinauer@google.com>
Acked-by: Peter Stuge <peter@stuge.se>                                                                                                                                          



git-svn-id: svn://svn.coreboot.org/coreboot/trunk@6544 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

1 files changed, 60 insertions, 0 deletions

diff --git a/src/console/uart8250mem_console.c b/src/console/uart8250mem_console.c
new file mode 100644
index 0000000000..a6968ddc4b
--- /dev/null
+++ b/src/console/uart8250mem_console.c
@@ -0,0 +1,60 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2003 Eric Biederman
+ *
+ * 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
+ */
+
+#include <console/console.h>
+#include <uart8250.h>
+#include <pc80/mc146818rtc.h>
+
+static u32 uart_bar = 0;
+
+static void uartmem_init(void)
+{
+	uart_bar = uart_mem_init();
+}
+
+static void uartmem_tx_byte(unsigned char data)
+{
+	if (!uart_bar)
+		return;
+
+	uart8250_mem_tx_byte(uart_bar, data);
+}
+
+static unsigned char uartmem_rx_byte(void)
+{
+	if (!uart_bar)
+		return 0;
+
+	return uart8250_mem_rx_byte(uart_bar);
+}
+
+static int uartmem_tst_byte(void)
+{
+	if (!uart_bar)
+		return 0;
+
+	return uart8250_mem_can_rx_byte(uart_bar);
+}
+
+static const struct console_driver uart8250mem_console __console = {
+	.init     = uartmem_init,
+	.tx_byte  = uartmem_tx_byte,
+	.rx_byte  = uartmem_rx_byte,
+	.tst_byte = uartmem_tst_byte,
+};