New files -- from rtems-LM-980406 which was based on an RTEMS from 12/97.

This was called the dmv170 BSP in that source tree but since the DMV171
is now obsolete, we have transitioned to the DMV177 and have no intention
of checking compatibility with any other models.

3 files changed, 736 insertions, 0 deletions

diff --git a/c/src/lib/libbsp/powerpc/dmv177/console/Makefile.in b/c/src/lib/libbsp/powerpc/dmv177/console/Makefile.in
new file mode 100644
index 0000000000..eb8b914e91
--- /dev/null
+++ b/c/src/lib/libbsp/powerpc/dmv177/console/Makefile.in
@@ -0,0 +1,56 @@
+#
+#  $Id$
+#
+
+@SET_MAKE@
+srcdir = @srcdir@
+top_srcdir = @top_srcdir@
+VPATH = @srcdir@
+RTEMS_ROOT = @RTEMS_ROOT@
+PROJECT_ROOT = @PROJECT_ROOT@
+RTEMS_CUSTOM = $(RTEMS_ROOT)/make/custom/$(RTEMS_BSP).cfg
+
+PGM=${ARCH}/console.rel
+
+# C source names, if any, go here -- minus the .c
+C_PIECES=console duart
+C_FILES=$(C_PIECES:%=%.c)
+C_O_FILES=$(C_PIECES:%=${ARCH}/%.o)
+
+H_FILES=
+
+SRCS=$(C_FILES) $(H_FILES)
+OBJS=$(C_O_FILES)
+
+include $(RTEMS_CUSTOM)
+include $(PROJECT_ROOT)/make/leaf.cfg
+
+#
+# (OPTIONAL) Add local stuff here using +=
+#
+
+DEFINES  +=
+CPPFLAGS +=
+CFLAGS   +=
+
+LD_PATHS  +=
+LD_LIBS   +=
+LDFLAGS   +=
+
+#
+# Add your list of files to delete here.  The config files
+#  already know how to delete some stuff, so you may want
+#  to just run 'make clean' first to see what gets missed.
+#  'make clobber' already includes 'make clean'
+#
+
+CLEAN_ADDITIONS +=
+CLOBBER_ADDITIONS +=
+
+${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/powerpc/dmv177/console/console.c b/c/src/lib/libbsp/powerpc/dmv177/console/console.c
new file mode 100644
index 0000000000..b1fc6f19e9
--- /dev/null
+++ b/c/src/lib/libbsp/powerpc/dmv177/console/console.c
@@ -0,0 +1,479 @@
+/*
+ *  console.c
+ *
+ *  This driver uses the termios pseudo driver.
+ *
+ *  Currently only polled mode is supported.
+ *
+ *  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.
+ *
+ *  $Id: console.c
+ */
+
+#include <stdlib.h>
+#include <motorola/mc68681.h>
+#include <bsp.h>
+#include <rtems/libio.h>
+#include <assert.h>
+
+#define COM1                      0
+#define COM2                      1
+#define NUM_PORTS                 2
+#define USE_FOR_CONSOLE           COM1
+
+/*
+ *  Define RDB_BREAK_IN if you need to be able to break in to the
+ *  program with a ctrl-c during remote target debugging. If so,
+ *  UART B will not be accessible from rtems during remote debugging
+ *  if interrupt driven console is used. Does not affect UART A, polled 
+ *  mode or when the program runs without remote debugging.
+ */
+#define RDB_BREAK_IN
+
+/* Proto-types for Duart.C */
+void console_initialize_interrupts( void );
+char console_inbyte_polled( int port );
+void console_outbyte_polled(int  port, char ch);
+rtems_isr console_isr (rtems_vector_number vector);
+volatile void init_mc88681();
+
+/*  PAGE
+ *
+ *  console_initialize
+ *
+ *  This routine initializes the console IO driver.
+ *
+ *  Input parameters:
+ *    major - console device major number
+ *    minor - console device minor number
+ *    arg   - pointer to optional device driver arguments
+ *
+ *  Output parameters:  NONE
+ *
+ *  Return values:
+ *    rtems_device_driver status code
+ */
+ 
+rtems_device_driver console_initialize(
+  rtems_device_major_number  major,
+  rtems_device_minor_number  minor,
+  void                      *arg
+)
+{
+  rtems_status_code status;
+  int               console;
+
+  /*
+   * initialize the termio interface.
+   */
+  rtems_termios_initialize();
+
+  /*
+   *  Register Device Names
+   */
+  console = USE_FOR_CONSOLE;
+  status = rtems_io_register_name( "/dev/console", major, console );
+  if (status != RTEMS_SUCCESSFUL)
+    rtems_fatal_error_occurred(status);
+
+  /*
+   *  Initialize Hardware
+   */
+
+  init_mc88681 ();
+
+#if CONSOLE_USE_INTERRUPTS
+  console_initialize_interrupts();
+#endif
+ 
+  return RTEMS_SUCCESSFUL;
+}
+
+/* PAGE
+ *
+ *  console_write_support
+ *
+ *  This routine is Console Termios output entry point.
+ *
+ *  Input parameters:
+ *    minor - console device minor number
+ *    buf   - buffer of data to be written
+ *    len   - length of data to be written
+ *
+ *  Output parameters:  NONE
+ *
+ *  Return values:
+ *    int     number of bytes written
+ */
+
+int console_write_support(
+  int         minor, 
+  const char *buf, 
+  int         len)
+{
+  int                       nwrite = 0;
+  int                       port = minor;
+
+  /* 
+   * verify port Number 
+   */
+  assert ( port < NUM_PORTS );
+
+  /*
+   * poll each byte in the string out of the port.
+   */
+  while (nwrite < len) {
+#if defined(CONSOLE_USE_INTERRUPTS)
+#else
+    console_outbyte_polled(port, *buf++);
+#endif
+   nwrite++;
+  }
+
+  /*
+   * return the number of bytes written.
+   */
+  return nwrite;
+}
+
+
+/*  PAGE
+ *
+ *  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;
+  rtems_unsigned32    isrlevel;
+
+  rtems_interrupt_disable( isrlevel );
+  for ( s = string ; *s ; s++ ) 
+    console_outbyte_polled( 0, *s );
+
+  console_outbyte_polled( 0, '\r' );
+  console_outbyte_polled( 0, '\n' );
+  rtems_interrupt_enable( isrlevel );
+}
+
+
+/* PAGE
+ *
+ *  console_open
+ *
+ *  This routine is the console device driver open entry point. 
+ *
+ *  Input parameters:
+ *    major - console device major number
+ *    minor - console device minor number
+ *    arg   - pointer to optional device driver arguments
+ *
+ *  Output parameters:  NONE
+ *
+ *  Return values:
+ *    rtems_device_driver status code
+ */
+ 
+rtems_device_driver console_open(
+  rtems_device_major_number major,
+  rtems_device_minor_number minor,
+  void                    * arg
+)
+{
+  rtems_status_code sc;
+  int               port = minor;
+#if defined(CONSOLE_USE_INTERRUPTS)
+  rtems_libio_open_close_args_t *args = arg;
+#endif
+
+  /*
+   * Verify the minor number is valid.
+   */
+  if (minor < 0)
+    return RTEMS_INVALID_NUMBER;
+
+  if ( port > NUM_PORTS )
+     return RTEMS_INVALID_NUMBER;
+
+  /*
+   *  open the port as a termios console driver.
+   */
+#if defined(CONSOLE_USE_INTERRUPTS)
+   sc = rtems_termios_open (major, minor, arg,
+                            NULL, NULL, NULL,
+                            console_write_support, 0);
+#else
+   sc = rtems_termios_open (major, minor, arg, NULL, NULL,
+                            console_inbyte_nonblocking,
+                            console_write_support,
+                            0);
+#endif
+
+  return sc;
+}
+ 
+ 
+
+/* PAGE
+ *
+ *  console_reserve_resources
+ *
+ *  This routine reserves resources for each port which may be
+ *  used as a console.
+ *
+ *  Input parameters: 
+ *    configuration  - rtems configuration table.
+ *
+ *  Output parameters: NONE
+ *
+ *  Return values: NONE
+ */
+
+void console_reserve_resources(
+  rtems_configuration_table *configuration
+)
+{
+  rtems_termios_reserve_resources( configuration, NUM_PORTS );
+}
+
+/* PAGE
+ *
+ *  console_close
+ *
+ *  This routine is the console device driver close entry point.
+ *
+ *  Input parameters:
+ *    major - console device major number
+ *    minor - console device minor number
+ *    arg   - pointer to optional device driver arguments
+ *
+ *  Output parameters:  NONE
+ *
+ *  Return values:
+ *    rtems_device_driver status code
+ */
+ 
+rtems_device_driver console_close(
+  rtems_device_major_number major,
+  rtems_device_minor_number minor,
+  void                    * arg
+)
+{
+  return rtems_termios_close (arg);
+}
+ 
+/* PAGE
+ *
+ *  console_read
+ *
+ *  This routine is the console device driver read entry point.
+ *
+ *  Input parameters:
+ *    major - console device major number
+ *    minor - console device minor number
+ *    arg   - pointer to optional device driver arguments
+ *
+ *  Output parameters:  NONE
+ *
+ *  Return values:
+ *    rtems_device_driver status code
+ *
+ */
+ rtems_device_driver console_read(
+  rtems_device_major_number major,
+  rtems_device_minor_number minor,
+  void                    * arg
+)
+{
+  return rtems_termios_read (arg);
+}
+ 
+/* PAGE
+ *
+ *  console_write
+ *
+ *  This routine is the console device driver write entry point.
+ *
+ *  Input parameters:
+ *    major - console device major number
+ *    minor - console device minor number
+ *    arg   - pointer to optional device driver arguments
+ *
+ *  Output parameters:  NONE
+ *
+ *  Return values:
+ *    rtems_device_driver status code
+ *
+ */
+rtems_device_driver console_write(
+  rtems_device_major_number major,
+  rtems_device_minor_number minor,
+  void                    * arg
+)
+{
+  return rtems_termios_write (arg);
+}
+ 
+/* PAGE
+ *
+ *  console_control
+ *
+ *  This routine is console device driver control entry point
+ *
+ *  Input parameters:
+ *    major - console device major number
+ *    minor - console device minor number
+ *    arg   - pointer to optional device driver arguments
+ *
+ *  Output parameters:  NONE
+ *
+ *  Return values:
+ *    rtems_device_driver status code
+ *
+ */
+rtems_device_driver console_control(
+  rtems_device_major_number major,
+  rtems_device_minor_number minor,
+  void                    * arg
+)
+{
+  return rtems_termios_ioctl (arg);
+}
+
+
+/*
+ *  Interrupt driven console IO
+ */
+
+#if CONSOLE_USE_INTERRUPTS
+
+/*
+ *  Buffers between task and ISRs
+ */
+
+#include <ringbuf.h>
+extern Ring_buffer_t TX_Buffer[2];
+extern Ring_buffer_t RX_Buffer[2];
+
+/*
+ *  console_inbyte_interrupts
+ *
+ *  This routine reads a character from the UART.
+ *
+ *  Input parameters: NONE
+ *
+ *  Output parameters:  NONE
+ *
+ *  Return values:
+ *    character read from UART
+ */
+ 
+char console_inbyte_interrupts( int port )
+{
+  char ch;
+
+  while ( Ring_buffer_Is_empty( &RX_Buffer[ port ] ) );
+ 
+  Ring_buffer_Remove_character( &RX_Buffer[ port ], ch );
+  return ch;
+}
+ 
+/*
+ *  console_outbyte_interrupts
+ *
+ *  This routine transmits a character out.
+ *
+ *  Input parameters:
+ *    port - port to transmit character to
+ *    ch  - character to be transmitted
+ *
+ *  Output parameters:  NONE
+ *
+ *  Return values:      NONE
+ */
+ 
+void console_outbyte_interrupts(
+  int  port,
+  char ch
+)
+{
+  /*
+   *  If this is the first character then we need to prime the pump
+   */
+
+  if ( Is_TX_active[ port ] == FALSE ) {
+    Is_TX_active[ port ] = TRUE;
+    console_outbyte_polled( port, ch );
+    return;
+  }
+
+  while ( Ring_buffer_Is_full( &TX_Buffer[ port ] ) );
+ 
+  Ring_buffer_Add_character( &TX_Buffer[ port ], ch );
+}
+
+/*
+ *  console_exit
+ *
+ *  This routine allows the console to exit by masking its associated interrupt
+ *  vectors.
+ *
+ *  Input parameters:  NONE
+ *
+ *  Output parameters: NONE
+ *
+ *  Return values:     NONE
+ */
+
+void console_exit()
+{
+  volatile unsigned char *_addr;
+  int port;
+
+  /*
+   *  Although the interrupts for the UART are unmasked, the PIL is set to
+   *  disable all external interrupts.  So we might as well do this first.
+   */
+
+  /* ??? Mask All UART Interrupts           */
+
+  for (port = MC68681_PORT_A; port <= MC68681_PORT_B; port++) {
+    while (!Ring_buffer_Is_empty (&TX_Buffer[port])) {
+      Ring_buffer_Remove_character (&TX_Buffer[port],ch);
+      console_outbyte_polled (port,ch);
+    }
+  }
+
+  /*
+   *  Now wait for all the data to actually get out ... the send register
+   *  should be empty.
+   */
+   _addr = (unsigned char *) (DUART_ADDR + MC68681_STATUS_REG_A);
+   while (!(*_addr & MC68681_TX_EMPTY));
+
+  _addr = (unsigned char *) (DUART_ADDR + MC68681_STATUS_REG_B);
+   while (!(*_addr & MC68681_TX_EMPTY));
+}
+#endif /* CONSOLE_USE_INTERRUPTS */
+
+
+
diff --git a/c/src/lib/libbsp/powerpc/dmv177/console/duart.c b/c/src/lib/libbsp/powerpc/dmv177/console/duart.c
new file mode 100644
index 0000000000..f72b37a832
--- /dev/null
+++ b/c/src/lib/libbsp/powerpc/dmv177/console/duart.c
@@ -0,0 +1,201 @@
+/*
+ *  duart.c
+ *
+ *  This code is a modified version of what you will find at the
+ *  end of the IDP User's manual.  The original code is copyrighted
+ *  by Motorola and Motorola Semiconductor Products as well as
+ *  Motorola Software products group.
+ *  
+ *  Modifications to the original IDP code by Doug McBride, Colorado
+ *  Space Grant College.  Modifications include a means of accessing
+ *  port B of the duart as well as port A as well as modifications for
+ *  buffering and RTEMS support.  Modifications are provided
+ *  as is and may not be correct.
+ *  
+ *  Rob Savoye provided the format for the mc68681 header file
+ *  
+ *  Joel Sherrill provided inspiration for recoding my original assembly
+ *  for this file into C (a good idea)
+ *  
+ *  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.
+ *
+ *  $Id: duart.c
+ */
+
+#define MC68681_OFFSET_MULTIPLIER 8
+#include <motorola/mc68681.h>
+#include <bsp.h>
+#include <ringbuf.h>
+          
+rtems_isr console_isr (rtems_vector_number vector);
+
+Ring_buffer_t TX_Buffer[2];
+Ring_buffer_t RX_Buffer[2];
+
+/*  PAGE
+ *
+ *  init_mc88681
+ *
+ *  volatile routine to initialize duart
+ *
+ *  Input parameters: NONE
+ *
+ *  Output parameters: NONE
+ *
+ *  Return Values:     NONE  
+ */
+
+volatile void init_mc88681()
+{
+  /*
+   *  Initialize Ring buffers
+   */
+  Ring_buffer_Initialize( &RX_Buffer[ 0 ] );
+  Ring_buffer_Initialize( &RX_Buffer[ 1 ] );
+
+  Ring_buffer_Initialize( &TX_Buffer[ 0 ] );
+  Ring_buffer_Initialize( &TX_Buffer[ 1 ] );
+}
+
+/*  PAGE
+ *
+ *  console_isr
+ *
+ *  interrupt handler for receive of character from duart on ports A & B 
+ *
+ *  Input parameters: NONE
+ *
+ *  Output parameters: NONE
+ *
+ *  Return Values:     NONE  
+ */
+
+rtems_isr console_isr (rtems_vector_number vector)
+{
+
+   /*
+    *  Fill me in later ...
+    */
+
+}
+
+
+/*  PAGE
+ *
+ *  console_outbyte_polled
+ *
+ *  This routine transmits a character out.
+ *
+ *  Input parameters:
+ *    port - port to transmit character to
+ *    ch  - character to be transmitted
+ *
+ *  Output parameters:  NONE
+ *
+ *  Return values: NONE
+ */
+
+void console_outbyte_polled(
+  int port,
+  char ch
+)
+{
+  unsigned char status;
+  unsigned char data;
+  unsigned char t = 0;
+
+  if (port == MC68681_PORT_A) { 
+    status = MC68681_STATUS_REG_A;
+    data = MC68681_TRANSMIT_BUFFER_A;
+  } else {
+    status = MC68681_STATUS_REG_B;
+    data = MC68681_TRANSMIT_BUFFER_B;
+  }
+
+  while ( !(MC68681_READ(DUART_ADDR, status) & MC68681_TX_READY) ){
+    if (t == 0) {
+      Debug_Entry( 0x8000 );
+      t++;
+    }
+  }
+  
+  Debug_Entry( 0x9000 );
+  MC68681_WRITE(DUART_ADDR, data, ch);
+}
+
+
+/*  PAGE
+ *
+ *  console_inbyte_polled
+ *
+ *  This routine reads a character from the UART.
+ *
+ *  Input parameters:
+ *    port - port to read character from
+ *
+ *  Output parameters:  NONE
+ *
+ *  Return values:
+ *    character read from UART
+ */
+
+#define MC68681_RECEIVE_ERRORS \
+      (MC68681_OVERRUN_ERROR | MC68681_PARITY_ERROR | MC68681_FRAMING_ERROR)
+
+char console_inbyte_polled( int port )
+{
+  char status;
+  char data;
+  char cmd;
+  unsigned char status_info;
+
+  /*  
+   * Set Port A or B unique variables.         
+   */
+  if (port == MC68681_PORT_A)  {
+    status = MC68681_STATUS_REG_A;
+    data   = MC68681_RECEIVE_BUFFER_A;
+    cmd    = MC68681_COMMAND_REG_A;
+  } else {
+    status = MC68681_STATUS_REG_B;
+    data   = MC68681_RECEIVE_BUFFER_B;
+    cmd    = MC68681_COMMAND_REG_B;
+  }
+
+  /* Wait for the Ready bit and Clear any errors */
+  for ( ; ; ) {
+    status_info = MC68681_READ(DUART_ADDR, status);
+    if ( status_info & MC68681_RX_READY )
+      break;
+
+     if ( status_info & MC68681_RECEIVE_ERRORS )
+         MC68681_WRITE( DUART_ADDR, cmd, MC68681_MODE_REG_RESET_ERROR );
+  }
+
+  return MC68681_READ(DUART_ADDR, data);
+}
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+