+
+ /* Set to 3 for 8N1 */
+ outb(CONFIG_TTYS0_LCS, base_port + UART_LCR);
+ ENABLE_TRACE;
+}
+
+void uart_init(void)
+{
+ /* TODO the divisor calculation is hard coded to standard UARTs. Some
+ * UARTs won't work with these values. This should be a property of the
+ * UART used, worst case a Kconfig variable. For now live with hard
+ * codes as the only devices that might be different are the iWave
+ * iRainbowG6 and the OXPCIe952 card (and the latter is memory mapped)
+ */
+ unsigned int div = (115200 / CONFIG_TTYS0_BAUD);
+
+#if !defined(__SMM__) && CONFIG_USE_OPTION_TABLE
+ static const unsigned char divisor[8] = { 1, 2, 3, 6, 12, 24, 48, 96 };
+ unsigned b_index = 0;
+#if defined(__PRE_RAM__)
+ b_index = read_option(baud_rate, 0);
+ b_index &= 7;
+ div = divisor[b_index];
+#else
+ if (get_option(&b_index, "baud_rate") == 0) {
+ div = divisor[b_index];
+ }
+#endif
+#endif
+
+ uart8250_init(CONFIG_TTYS0_BASE, div);