Initial submission of gen68340 BSP (should run on a 68349) from

Geoffroy Montel <g_montel@yahoo.com>.

2 files changed, 239 insertions, 0 deletions

diff --git a/c/src/lib/libbsp/m68k/gen68340/clock/Makefile.in b/c/src/lib/libbsp/m68k/gen68340/clock/Makefile.in
new file mode 100644
index 0000000000..59df4f2702
--- /dev/null
+++ b/c/src/lib/libbsp/m68k/gen68340/clock/Makefile.in
@@ -0,0 +1,54 @@
+#
+#  $Id$
+#
+
+@SET_MAKE@
+srcdir = @srcdir@
+VPATH = @srcdir@
+RTEMS_ROOT = @top_srcdir@
+PROJECT_ROOT = @PROJECT_ROOT@
+
+PGM=${ARCH}/clock.rel
+
+# C source names, if any, go here -- minus the .c
+C_PIECES=ckinit
+C_FILES=$(C_PIECES:%=%.c)
+C_O_FILES=$(C_PIECES:%=${ARCH}/%.o)
+
+H_FILES=
+
+SRCS=$(C_FILES) $(H_FILES)
+OBJS=$(C_O_FILES)
+
+include $(RTEMS_ROOT)/make/custom/$(RTEMS_BSP).cfg
+include $(RTEMS_ROOT)/make/leaf.cfg
+
+#
+# (OPTIONAL) Add local stuff here using +=
+#
+
+DEFINES  +=
+CPPFLAGS +=
+CFLAGS   +=
+
+LD_PATHS  +=
+LD_LIBS   +=
+LDFLAGS   +=
+
+#
+# Add your list of files to delete here.  The config files
+#  already know how to delete some stuff, so you may want
+#  to just run 'make clean' first to see what gets missed.
+#  'make clobber' already includes 'make clean'
+#
+
+CLEAN_ADDITIONS +=
+CLOBBER_ADDITIONS +=
+
+${PGM}: ${SRCS} ${OBJS}
+	$(make-rel)
+
+all:	${ARCH} $(SRCS) $(PGM)
+
+# the .rel file built here will be put into libbsp.a by ../wrapup/Makefile
+install:  all
diff --git a/c/src/lib/libbsp/m68k/gen68340/clock/ckinit.c b/c/src/lib/libbsp/m68k/gen68340/clock/ckinit.c
new file mode 100644
index 0000000000..3a69bbf243
--- /dev/null
+++ b/c/src/lib/libbsp/m68k/gen68340/clock/ckinit.c
@@ -0,0 +1,185 @@
+/* 
+ * This routine initializes the MC68340/349 Periodic Interval Timer
+ *
+ * Based on the `gen68360' board support package, and covered by the
+ * original distribution terms.
+ *
+ * Geoffroy Montel
+ * France Telecom - CNET/DSM/TAM/CAT
+ * 4, rue du Clos Courtel
+ * 35512 CESSON-SEVIGNE
+ * FRANCE
+ * 
+ * e-mail: g_montel@yahoo.com
+ *
+ *  $Id$
+ */
+
+/*
+ * Input parameters:	NONE
+ *
+ * Output parameters:	NONE
+ *
+ * COPYRIGHT (c) 1989-1998.
+ * On-Line Applications Research Corporation (OAR).
+ * Copyright assigned to U.S. Government, 1994.
+ *
+ * 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.
+ */
+
+#include <stdlib.h>			/* for atexit() */
+#include <bsp.h>
+#include <rtems/libio.h>
+#include <m68340.h>
+
+#define CLOCK_VECTOR	120		/* clock isr routine vector in the vbr */
+#define CLOCK_IRQ_LEVEL	6		/* clock isr level */
+
+/*
+ * Clock_driver_ticks is a monotonically increasing counter of the
+ * number of clock ticks since the driver was initialized.
+ */
+volatile rtems_unsigned32 Clock_driver_ticks;
+
+/*
+ * These are set by clock driver during its init
+ */
+rtems_device_major_number rtems_clock_major = ~0;
+rtems_device_minor_number rtems_clock_minor;
+
+/*
+ * Periodic interval timer interrupt handler
+ */
+
+/******************************************************
+  Name: Clock_isr
+  Input parameters: irq vector 
+  Output parameters: none
+  Description: update # of clock ticks
+ *****************************************************/
+rtems_isr
+Clock_isr (rtems_vector_number vector)
+{
+	/*
+	 * Announce the clock tick
+	 */
+	Clock_driver_ticks++;
+	rtems_clock_tick();
+}
+
+/******************************************************
+  Name: clock_exit
+  Input parameters: -
+  Output parameters: -
+  Description: turn off periodic time at shutdown
+ *****************************************************/
+void
+Clock_exit (void)
+{
+	if (BSP_Configuration.ticks_per_timeslice ) {
+		/*
+		 * Turn off periodic interval timer
+		 */		
+		SIMPITR = 0;
+	}
+}
+
+/******************************************************
+  Name: Install_clock
+  Input parameters: the Clock Interrupt Subroutine
+  Output parameters: -
+  Description: initialize the periodic interval ticker
+	       called by Clock_Initialize
+ *****************************************************/
+static void
+Install_clock (rtems_isr_entry clock_isr)
+{
+	unsigned32 pitr_tmp;
+
+	Clock_driver_ticks = 0;
+	if ( BSP_Configuration.ticks_per_timeslice ) {
+
+		set_vector (clock_isr, CLOCK_VECTOR, 1);
+		
+		/* sets the Periodic Interrupt Control Register PICR */
+		/* voir a quoi correspond exactement le Clock Vector */
+
+		SIMPICR = ( CLOCK_IRQ_LEVEL << 8 ) | ( CLOCK_VECTOR );		
+				  
+		/* sets the PITR count value */
+		/* this assumes a 32.765 kHz crystal */
+		
+		/* find out whether prescaler should be enabled or not */
+		if ( BSP_Configuration.microseconds_per_tick <= 31128 ) {
+		   pitr_tmp = ( BSP_Configuration.microseconds_per_tick * 8192 ) / 1000000 ;
+		}
+		else {
+		   pitr_tmp = ( BSP_Configuration.microseconds_per_tick / 1000000 ) * 16;
+		   /* enable it */		   
+		   pitr_tmp |= 0x100; 		   
+		}
+
+		SIMPITR = (unsigned char) pitr_tmp;
+
+		atexit (Clock_exit);
+	}
+}
+
+/******************************************************
+  Name: Clock_initialize
+  Input parameters: major & minor numbers
+  Output parameters: - 
+  Description: main entry for clock initialization
+	       calls the bsp dependant routine
+ *****************************************************/
+rtems_device_driver
+Clock_initialize(
+	rtems_device_major_number major,
+	rtems_device_minor_number minor,
+	void *pargp
+)
+{
+	Install_clock (Clock_isr);
+ 
+	/*
+	 * make major/minor avail to others such as shared memory driver
+	 */
+	rtems_clock_major = major;
+	rtems_clock_minor = minor;
+ 
+	return RTEMS_SUCCESSFUL;
+}
+ 
+/******************************************************
+  Name: Clock_control
+  Input parameters: major & minor number
+  Output parameters:
+  Description:
+ *****************************************************/
+rtems_device_driver Clock_control(
+	rtems_device_major_number major,
+	rtems_device_minor_number minor,
+	void *pargp
+)
+{
+	rtems_unsigned32 isrlevel;
+	rtems_libio_ioctl_args_t *args = pargp;
+
+	if (args) {
+		/*
+		 * This is hokey, but until we get a defined interface
+		 * to do this, it will just be this simple...
+		 */
+		if (args->command == rtems_build_name('I', 'S', 'R', ' ')) {
+			Clock_isr( CLOCK_VECTOR);
+		}
+		else if (args->command == rtems_build_name('N', 'E', 'W', ' ')) {
+			rtems_interrupt_disable( isrlevel );
+			 (void) set_vector( args->buffer, CLOCK_VECTOR, 1 );
+			rtems_interrupt_enable( isrlevel );
+		}
+	}
+	return RTEMS_SUCCESSFUL;
+}