bsps/lm32: Move shared drivers to bsps

This patch is a part of the BSP source reorganization.

Update #3285.

bsps/lm32/shared/milkymist_console/uart.c

@@ -0,0 +1,46 @@
+/*
+ *  Driver for Milkymist UART
+ *
+ *  The license and distribution terms for this file may be
+ *  found in the file LICENSE in this distribution or at
+ *  http://www.rtems.org/license/LICENSE.
+ *
+ *  COPYRIGHT (c) 2010 Sebastien Bourdeauducq
+ *  COPYRIGHT (c) Yann Sionneau <yann.sionneau@telecom-sudparis.eu> (GSoC 2010)
+ *  Telecom SudParis
+ */
+
+#include <rtems.h>
+#include <rtems/libio.h>
+#include "../include/system_conf.h"
+#include "uart.h"
+
+void BSP_uart_init(int baud)
+{
+  MM_WRITE(MM_UART_DIV, MM_READ(MM_FREQUENCY)/baud/16);
+}
+
+void BSP_uart_polled_write(char ch)
+{
+  rtems_interrupt_level level;
+
+  rtems_interrupt_disable(level);
+  while(!(MM_READ(MM_UART_STAT) & UART_STAT_THRE));
+  MM_WRITE(MM_UART_RXTX, ch);
+  while(!(MM_READ(MM_UART_STAT) & UART_STAT_THRE));
+  rtems_interrupt_enable(level);
+}
+
+int BSP_uart_polled_read(void)
+{
+  char r;
+  rtems_interrupt_level level;
+
+  rtems_interrupt_disable(level);
+  while(!(MM_READ(MM_UART_STAT) & UART_STAT_RX_EVT));
+  r = MM_READ(MM_UART_RXTX);
+  MM_WRITE(MM_UART_STAT, UART_STAT_RX_EVT);
+  rtems_interrupt_enable(level);
+
+  return r;
+}