New port of RTEMS to TI C3x and C4x.

1 files changed, 52 insertions, 0 deletions

diff --git a/c/src/exec/score/cpu/c4x/c4xio.h b/c/src/exec/score/cpu/c4x/c4xio.h
new file mode 100644
index 0000000000..5baba149bb
--- /dev/null
+++ b/c/src/exec/score/cpu/c4x/c4xio.h
@@ -0,0 +1,52 @@
+/*
+ *  C4X IO Information
+ *
+ *  $Id$
+ */
+
+#ifndef __C4XIO_h
+#define __C4XIO_h
+
+/*
+ *  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.
+ */
+
+struct c4x_timer {
+    volatile int tcontrol;
+    volatile int r1[3];
+    volatile int tcounter;
+    volatile int r2[3];
+    volatile int tperiod;
+};
+
+#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
+
+#define c4x_timer_start( _timer ) \
+    _timer->tcontrol=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);
+
+#endif
+/* end if include file */