1 files changed, 89 insertions, 0 deletions
diff --git a/cpu/at91rm9200/serial.c b/cpu/at91rm9200/serial.c
new file mode 100644
index 0000000..565cd3d
--- /dev/null
+++ b/cpu/at91rm9200/serial.c
@@ -0,0 +1,89 @@
+/*
+ * (C) Copyright 2002
+ * Lineo, Inc <www.lineo.com>
+ * Bernhard Kuhn <bkuhn@lineo.com>
+ *
+ * (C) Copyright 2002
+ * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
+ * Marius Groeger <mgroeger@sysgo.de>
+ *
+ * (C) Copyright 2002
+ * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
+ * Alex Zuepke <azu@sysgo.de>
+ *
+ * Copyright (C) 1999 2000 2001 Erik Mouw (J.A.K.Mouw@its.tudelft.nl)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ */
+
+#include <common.h>
+#include <AT91RM9200.h>
+
+/* ggi thunder */
+AT91PS_USART us = (AT91PS_USART) AT91C_BASE_DBGU;
+
+void serial_setbrg(void)
+  {
+  DECLARE_GLOBAL_DATA_PTR;
+  int baudrate;
+
+  if ((baudrate = gd->bd->bi_baudrate) <= 0)
+    baudrate = CONFIG_BAUDRATE;
+  us->US_BRGR = 33 /* AT91C_MASTER_CLOCK / baudrate / 16 */; /* hardcode so no __divsi3 */
+  }
+
+int serial_init(void)
+  {
+  /* make any port initializations specific to this port */
+  *AT91C_PIOA_PDR = AT91C_PA31_DTXD | AT91C_PA30_DRXD;  /* PA 31 & 30 */
+  *AT91C_PMC_PCER = 1 << AT91C_ID_SYS;  /* enable clock */
+  serial_setbrg();
+
+  us->US_CR = AT91C_US_RSTRX | AT91C_US_RSTTX;
+  us->US_CR = AT91C_US_RXEN | AT91C_US_TXEN;
+  us->US_MR = ( AT91C_US_CLKS_CLOCK | AT91C_US_CHRL_8_BITS | AT91C_US_PAR_NONE | AT91C_US_NBSTOP_1_BIT );
+  us->US_IMR = ~0ul;
+  return (0);
+  }
+
+void serial_putc(const char c)
+  {
+  if (c == '\n')
+    serial_putc('\r');
+  while( (us->US_CSR & AT91C_US_TXRDY) == 0 )
+    ;
+  us->US_THR=c;
+  }
+
+void
+serial_puts (const char *s)
+  {
+  while (*s)
+    {
+    serial_putc (*s++);
+    }
+  }
+
+int serial_getc(void)
+  {
+  while( (us->US_CSR & AT91C_US_RXRDY) == 0 );
+  return us->US_RHR;
+  }
+
+int serial_tstc(void)
+  {
+  return ((us->US_CSR & AT91C_US_RXRDY) == AT91C_US_RXRDY);
+  }