1 files changed, 109 insertions, 0 deletions
diff --git a/c/src/lib/libbsp/sparc/leon/console/debugputs.c b/c/src/lib/libbsp/sparc/leon/console/debugputs.c
new file mode 100644
index 0000000000..71b5c8debf
--- /dev/null
+++ b/c/src/lib/libbsp/sparc/leon/console/debugputs.c
@@ -0,0 +1,109 @@
+/*
+ *  This file contains the TTY driver for the serial ports on the LEON.
+ *
+ *  This driver uses the termios pseudo driver.
+ *
+ *  COPYRIGHT (c) 1989-1999.
+ *  On-Line Applications Research Corporation (OAR).
+ *
+ *  The license and distribution terms for this file may be
+ *  found in the file LICENSE in this distribution or at
+ *  http://www.OARcorp.com/rtems/license.html.
+ *
+ *  $Id$
+ */
+
+#include <bsp.h>
+#include <rtems/libio.h>
+#include <stdlib.h>
+#include <assert.h>
+
+/*
+ *  console_outbyte_polled
+ *
+ *  This routine transmits a character using polling.
+ */
+
+void console_outbyte_polled(
+  int  port,
+  char ch
+)
+{
+  if ( port == 0 ) {
+    while ( (LEON_REG.UART_Status_1 & LEON_REG_UART_STATUS_THE) == 0 );
+      LEON_REG.UART_Channel_1 = (int) ch;
+      return;
+    }
+
+    while ( (LEON_REG.UART_Status_2 & LEON_REG_UART_STATUS_THE) == 0 );
+    LEON_REG.UART_Channel_2 = (int) ch;
+}
+
+/*
+ *  console_inbyte_nonblocking 
+ *
+ *  This routine polls for a character.
+ */
+
+int console_inbyte_nonblocking( int port )
+{
+
+  switch (port) {
+
+    case 0:
+      if (LEON_REG.UART_Status_1 & LEON_REG_UART_STATUS_ERR) {
+        LEON_REG.UART_Status_1 = ~LEON_REG_UART_STATUS_ERR;
+      }
+
+      if ((LEON_REG.UART_Status_1 & LEON_REG_UART_STATUS_DR) == 0)
+         return -1;
+      return (int) LEON_REG.UART_Channel_1;
+      return 1;
+
+    case 1:
+      if (LEON_REG.UART_Status_2 & LEON_REG_UART_STATUS_ERR) {
+        LEON_REG.UART_Status_2 = ~LEON_REG_UART_STATUS_ERR;
+      }
+
+      if ((LEON_REG.UART_Status_2 & LEON_REG_UART_STATUS_DR) == 0)
+         return -1;
+      return (int) LEON_REG.UART_Channel_2;
+
+    default:
+      assert( 0 );
+  }
+
+  return -1;
+}
+
+/*
+ *  DEBUG_puts
+ *
+ *  This should be safe in the event of an error.  It attempts to insure
+ *  that no TX empty interrupts occur while it is doing polled IO.  Then
+ *  it restores the state of that external interrupt.
+ *
+ *  Input parameters:
+ *    string  - pointer to debug output string
+ *
+ *  Output parameters:  NONE
+ *
+ *  Return values:      NONE
+ */
+
+void DEBUG_puts(
+  char *string
+)
+{
+  char *s;
+  unsigned32 old_level;
+
+  LEON_Disable_interrupt( LEON_INTERRUPT_UART_1_RX_TX, old_level );
+  LEON_REG.UART_Control_1 = LEON_REG_UART_CTRL_TE;
+    for ( s = string ; *s ; s++ ) 
+      console_outbyte_polled( 0, *s );
+
+    console_outbyte_polled( 0, '\r' );
+    console_outbyte_polled( 0, '\n' );
+  LEON_Restore_interrupt( LEON_INTERRUPT_UART_1_RX_TX, old_level );
+}