PC386 BSP enhancements from Aleksey Romanov (Quality Quorum

<qqi@world.std.com>).   Unfortunately after merging these,
the pc386 will not boot using grub for for.  It still does not
work using netboot for me.  Here is his summary of changes:


  rtems/c/src/lib/libbsp/i386/pc386/Makefile.in
  	Added support for new sub-directory

  rtems/c/src/lib/libbsp/i386/pc386/bsp_specs
  	Made possible to build COFF image

  rtems/c/src/lib/libbsp/i386/pc386/console/console.c
  	Added support for serial consoles, selectable by patching
  	binary image, added __assert(), use _IBMPC_inch_sleep()
  	instaed of _IMBPC_inch()

  rtems/c/src/lib/libbsp/i386/pc386/console/inch.c
  	Added _IMBPC_inch_sleep()

  rtems/c/src/lib/libbsp/i386/pc386/console/outch.c
  	Oops - just formatting

  rtems/c/src/lib/libbsp/i386/pc386/include/Makefile.in
  	Added support for new files

  rtems/c/src/lib/libbsp/i386/pc386/include/bsp.h
  	Added support for new features

  rtems/c/src/lib/libbsp/i386/pc386/include/pc386uart.h
  	New file: definitions for serial ports

  rtems/c/src/lib/libbsp/i386/pc386/include/pcibios.h
  	New file: definitions for PCI BIOS

  rtems/c/src/lib/libbsp/i386/pc386/pc386dev/Makefile.in
  	New file: makefile in new directory

  rtems/c/src/lib/libbsp/i386/pc386/pc386dev/i386-stub-glue.c
  	New file: i386-stub interface

  rtems/c/src/lib/libbsp/i386/pc386/pc386dev/i386-stub.c
  	New file: i386-stub itself

  rtems/c/src/lib/libbsp/i386/pc386/pc386dev/pc386uart.c
  	New file: serial ports

  rtems/c/src/lib/libbsp/i386/pc386/pc386dev/pcibios.c
  	New file: PCI BIOS support

  rtems/c/src/lib/libbsp/i386/pc386/start/start.s
  	Commented out DEBUG_EARLY stuff, everything is working fine

  rtems/c/src/lib/libbsp/i386/pc386/start/start16.s
  	Cleaned up

  rtems/c/src/lib/libbsp/i386/pc386/startup/bspstart.c
  	Added call to console_resereve_resources

  rtems/c/src/lib/libbsp/i386/pc386/startup/exit.c
  	Added support for serial console

  rtems/c/src/lib/libbsp/i386/pc386/startup/ldsegs.s
  	Fixed typo in comments

  rtems/c/src/lib/libbsp/i386/pc386/tools/Makefile.in
  	Changed to reflect cnages in code

  rtems/c/src/lib/libbsp/i386/pc386/tools/bin2boot.c
  	Trivialized, problem - I do not know how to make patch
  	remove obsolete files - there are a lot of them there

  rtems/c/src/lib/libbsp/i386/pc386/tools/binpatch.c
  	New file: utility to do binary patches

  rtems/c/src/lib/libbsp/i386/pc386/wrapup/Makefile.in
  	Added support for new directory

  rtems/make/custom/pc386.cfg
  	Add COFF image building

1 files changed, 41 insertions, 3 deletions

diff --git a/c/src/lib/libbsp/i386/pc386/console/inch.c b/c/src/lib/libbsp/i386/pc386/console/inch.c
index bcb9a17312..f29f6124c8 100644
--- a/c/src/lib/libbsp/i386/pc386/console/inch.c
+++ b/c/src/lib/libbsp/i386/pc386/console/inch.c
@@ -70,6 +70,7 @@ static char shift_map[] =
 static char             kbd_buffer[KBD_BUF_SIZE];
 static rtems_unsigned16 kbd_first = 0;
 static rtems_unsigned16 kbd_last  = 0;
+static rtems_unsigned16 kbd_end   = KBD_BUF_SIZE - 1;
 
 /*-------------------------------------------------------------------------+
 |         Function: rtemsReboot
@@ -81,7 +82,7 @@ static rtems_unsigned16 kbd_last  = 0;
 void rtemsReboot(void)
 {
   /* shutdown and reboot */
-  outport_byte(0x64, 0xFE);        /* use keyboard controler to do the job... */
+  outport_byte(0x64, 0xFE);      /* use keyboard controler to do the job... */
 } /* rtemsReboot */
 
 /*-------------------------------------------------------------------------+
@@ -223,10 +224,12 @@ _IBMPC_keyboard_isr(rtems_vector_number vector)
   if (_IBMPC_scankey(&kbd_buffer[kbd_last]))
   {
     /* Got one; save it if there is enough room in buffer. */
-    unsigned int next = (kbd_last + 1) % KBD_BUF_SIZE;
+    unsigned int next = (kbd_last == kbd_end) ? 0 : kbd_last + 1;
 
     if (next != kbd_first)
-      kbd_last = next;
+      {
+	kbd_last = next;
+      }
   }
 
   PC386_ackIrq(vector - PC386_IRQ_VECTOR_BASE); /* Mark interrupt as handled. */
@@ -277,3 +280,38 @@ _IBMPC_inch(void)
 
     return c;
 } /* _IBMPC_inch */
+
+/*-------------------------------------------------------------------------+
+|         Function: _IBMPC_inch_sleep
+|      Description: If charcter is ready return it, otherwise sleep until 
+|                   it is ready
+| Global Variables: None.
+|        Arguments: None.
+|          Returns: character read from keyboard.
++--------------------------------------------------------------------------*/
+char
+_IBMPC_inch_sleep(void)
+{
+    char c;
+    extern rtems_interval _TOD_Ticks_per_second; /* XXX should not do this */ 
+    rtems_interval ticks_to_delay;
+
+    ticks_to_delay = (_TOD_Ticks_per_second + 24) / 25; 
+
+    for(;;)
+      {
+	if(_IBMPC_chrdy(&c))
+	  {
+	    return c;
+	  }
+	rtems_task_wake_after(ticks_to_delay);
+      }
+	
+    return c;
+} /* _IBMPC_inch */
+
+
+
+
+
+