bsps: Move console drivers to bsps

This patch is a part of the BSP source reorganization.

Update #3285.

bsps/nios2/nios2_iss/console/console.c

@@ -0,0 +1,98 @@
+/*
+ *  This file implements simple console IO via JTAG UART.
+ */
+
+/*
+ *  COPYRIGHT (c) 1989-1999.
+ *  On-Line Applications Research Corporation (OAR).
+ *
+ *  Altera-specific code is
+ *  COPYRIGHT (c) 2005-2006 Kolja Waschk, rtemsdev/ixo.de
+ *
+ *  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.
+ */
+
+#define NO_BSP_INIT
+
+#include <bsp.h>
+#include <bsp/console-polled.h>
+#include <rtems/libio.h>
+
+/* #define JTAG_UART_REGS \
+        ((altera_avalon_jtag_uart_regs*)NIOS2_IO_BASE(JTAG_UART_BASE)) */
+
+/*  is_character_ready
+ *
+ *  If a character is available, this routine reads it and stores
+ *  it in reads the character and stores
+ */
+static bool is_character_ready(
+  char *ch
+)
+{
+  altera_avalon_jtag_uart_regs *ajur = NIOS2_IO_BASE(JTAG_UART_BASE);
+  unsigned int data = ajur->data;
+
+  if (data & ALTERA_AVALON_JTAG_UART_DATA_RVALID_MSK) {
+    *ch = (data & ALTERA_AVALON_JTAG_UART_DATA_DATA_MSK)
+	  >> ALTERA_AVALON_JTAG_UART_DATA_DATA_OFST;
+    return true;
+  }
+
+  return false;
+}
+
+void console_initialize_hardware(void)
+{
+}
+
+/*
+ *  This routine reads a character from the SOURCE.
+ */
+int console_inbyte_nonblocking(
+  int port
+)
+{
+  char ch;
+
+  /*
+   *  Wait until a character is available.
+   */
+  if (is_character_ready(&ch))
+    return ch;
+  return -1;
+}
+
+/*
+ *  This routine transmits a character out the SOURCE.
+ */
+void console_outbyte_polled(
+  int  port,
+  char ch
+)
+{
+  altera_avalon_jtag_uart_regs *ajur = NIOS2_IO_BASE(JTAG_UART_BASE);
+
+  /*
+   *  Wait for the transmitter to be ready.
+   *  Check for flow control requests and process.
+   *  Then output the character.
+   */
+  while ((ajur->control & ALTERA_AVALON_JTAG_UART_CONTROL_WSPACE_MSK) == 0);
+
+  ajur->data = ch;
+}
+
+/*
+ * To support printk
+ */
+
+#include <rtems/bspIo.h>
+
+static void ISS_output_char(char c) { console_outbyte_polled( 0, c ); }
+
+BSP_output_char_function_type           BSP_output_char = ISS_output_char;
+BSP_polling_getchar_function_type       BSP_poll_char = NULL;
+