2 files changed, 17 insertions, 4 deletions
diff --git a/src/include/uart.h b/src/include/uart.h
index b520e09bdb..997fe185ce 100644
--- a/src/include/uart.h
+++ b/src/include/uart.h
@@ -20,6 +20,23 @@
 #ifndef UART_H
 #define UART_H
 
+/* Return the clock frequency UART uses as reference clock for
+ * baudrate generator. */
+unsigned int uart_platform_refclk(void);
+
+/* Return the baudrate determined from option_table, or when that is
+ * not used, CONFIG_TTYS0_BAUD.
+ */
+unsigned int default_baudrate(void);
+
+/* Returns the divisor value for a given baudrate.
+ * The formula to satisfy is:
+ *    refclk / divisor = baudrate * oversample
+ */
+unsigned int uart_baudrate_divisor(unsigned int baudrate,
+	unsigned int refclk, unsigned int oversample);
+
+
 unsigned char uart_rx_byte(void);
 void uart_tx_byte(unsigned char data);
 void uart_tx_flush(void);
diff --git a/src/include/uart8250.h b/src/include/uart8250.h
index a48c948138..112cd44945 100644
--- a/src/include/uart8250.h
+++ b/src/include/uart8250.h
@@ -105,10 +105,6 @@
 #define UART_SCR 0x07
 #define UART_SPR 0x07
 
-#if ((115200 % CONFIG_TTYS0_BAUD) != 0)
-#error Bad ttyS0 baud rate
-#endif
-
 #if CONFIG_CONSOLE_SERIAL8250
 unsigned char uart8250_rx_byte(unsigned base_port);
 int uart8250_can_rx_byte(unsigned base_port);