1 files changed, 117 insertions, 0 deletions
diff --git a/cpukit/score/cpu/c4x/rtems/tic4x/c4xio.h b/cpukit/score/cpu/c4x/rtems/tic4x/c4xio.h
new file mode 100644
index 0000000000..9d2548ebac
--- /dev/null
+++ b/cpukit/score/cpu/c4x/rtems/tic4x/c4xio.h
@@ -0,0 +1,117 @@
+/*
+ *  C4X IO Information
+ *
+ *  COPYRIGHT (c) 1989-2007.
+ *  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.rtems.com/license/LICENSE.
+ *
+ *  $Id$
+ */
+
+#ifndef _RTEMS_TIC4X_C4XIO_H
+#define _RTEMS_TIC4X_C4XIO_H
+
+/*
+ *  Address defines
+ */
+
+#ifdef _TMS320C40
+#define C4X_TIMER_0 ((struct c4x_timer*)0x100020)
+#else
+#define C4X_TIMER_0 ((struct c4x_timer*)0x808020)
+#define C4X_TIMER_1 ((struct c4x_timer*)0x808030)
+#endif
+
+/* XXX how portable */
+
+/* C32 Internal Control Registers */
+#define C4X_STRB0_REG   0x808064
+#define C4X_STRB1_REG   0x808068
+#define C4X_IOSTRB_REG  0x808060
+
+/* C32 Internal RAM Locations */
+/* XXX how long */
+#define C4X_RAM_BLK_0   0x87fe00
+#define C4X_RAM_BLK_1   0x87ff00
+
+/*
+ *  Data Structures to Overlay the Peripherals on the CPU
+ */
+
+struct c4x_timer {
+  volatile int tcontrol;
+  volatile int r1[3];
+  volatile int tcounter;
+  volatile int r2[3];
+  volatile int tperiod;
+};
+
+
+
+
+/*
+ *  Timer Support Routines
+ *
+ *  The following section of C4x timer code is based on C40 specific
+ *  timer code from Ran Cabell <rcabell@norfolk.infi.net>.  The
+ *  only C3x/C4x difference spotted was the address of the timer.
+ *  The names have been changed to be more RTEMS like.
+ */
+
+#define c4x_timer_get_control( _timer ) (volatile int)(_timer->tcontrol)
+
+#define c4x_timer_set_control( _timer, _value ) \
+  do { \
+     (volatile int)(_timer->tcontrol) = _value; \
+  } while (0);
+
+#define c4x_timer_start( _timer ) \
+    c4x_timer_set_control(_timer, 0x02c1 )
+
+#define c4x_timer_stop( _timer ) _timer->tcontrol = 0
+
+#define c4x_timer_get_counter( _timer ) (volatile int)(_timer->tcounter)
+
+#define c4x_timer_set_counter( _timer, _value ) \
+  do { \
+     (volatile int)(_timer->tcounter) = _value; \
+  } while (0);
+
+#define c4x_timer_get_period( _timer ) (volatile int)(_timer->tperiod)
+
+#define c4x_timer_set_period( _timer, _value ) \
+  do { \
+     (volatile int)(_timer->tperiod) = _value; \
+  } while (0);
+
+/*
+ *  IO Flags
+ *
+ *  NOTE: iof on c3x, iiof on c4x 
+ */
+
+#ifdef _TMS320C40
+
+#else
+
+static inline uint32_t   c3x_get_iof( void )
+{
+  register uint32_t   iof_value;
+
+  __asm__ volatile ("ldi iof, %0" : "=r" (iof_value));
+  return iof_value;
+}
+
+static inline void c3x_set_iof( uint32_t   value )
+{
+  __asm__ volatile ("ldi  %0,iof" : : "g" (value) : "iof", "cc");
+}
+
+#endif
+
+
+#endif
+/* end if include file */