commit 9cac7985ec7384a6584c8846e41c0ddaade8774f
Author: Christian Vogel <vogelchr@vogel.cx>
Date:   Sun Apr 11 18:47:28 2010 +0200

    Additional initialisations for the UART to make the data corruption
    from the PC to the Phone go away.

diff --git a/src/target/firmware/calypso/uart.c b/src/target/firmware/calypso/uart.c
index c78ad05..a46fff9 100644
--- a/src/target/firmware/calypso/uart.c
+++ b/src/target/firmware/calypso/uart.c
@@ -303,6 +303,16 @@ void uart_init(uint8_t uart, uint8_t interrupts)
 		writeb(UART_REG_UIR, 0x00);
 	}
 #endif
+
+	/* if we don't initialize these, we get strange corruptions in the
+	   received data... :-( */
+	uart_reg_write(uart,  MDR1, 0x07); /* turn off UART */
+	uart_reg_write(uart,  XON1, 0x00); /* Xon1/Addr Register */
+	uart_reg_write(uart,  XON2, 0x00); /* Xon2/Addr Register */
+	uart_reg_write(uart, XOFF1, 0x00); /* Xoff1 Register */
+	uart_reg_write(uart, XOFF2, 0x00); /* Xoff2 Register */
+	uart_reg_write(uart,   EFR, 0x00); /* Enhanced Features Register */
+
 	/* select  UART mode */
 	uart_reg_write(uart, MDR1, 0);
 	/* no XON/XOFF flow control, ENHANCED_EN, no auto-RTS/CTS */