Update from Eric Valette <valette@crf.canon.fr>:

Here are patches that bring 980911 back to what I think is a correct
    version of raw IDT management as well as a correct initialisation
    of video console and rtems managed interrupts.

c/src/lib/libbsp/i386/pc386/start/start16.s

@@ -92,10 +92,8 @@ _start16:
 #else
 	ljmp	$PROT_CODE_SEG, $1f	# flush prefetch queue, and reload %cs
 #endif	
-1:
-
 .code32
-
+1:
         /*---------------------------------------------------------------------+
         | load the other segment registers
         +---------------------------------------------------------------------*/

c/src/lib/libbsp/i386/pc386/startup/bspstart.c

@@ -1,6 +1,4 @@
 /*-------------------------------------------------------------------------+
-| bspstart.c v1.1 - PC386 BSP - 1997/08/07
-+--------------------------------------------------------------------------+
 | This file contains the PC386 BSP startup package. It includes application,
 | board, and monitor specific initialization and configuration. The generic CPU
 | dependent initialization has been performed before this routine is invoked. 
@@ -38,12 +36,12 @@
 #include <libcsupport.h>
 #include <rtems/libio.h>
 #include <libcpu/cpuModel.h>
+#include <pc386uart.h>
 
 /*-------------------------------------------------------------------------+
 | Global Variables
 +--------------------------------------------------------------------------*/
 extern rtems_unsigned32 _end;         /* End of BSS. Defined in 'linkcmds'. */
-
 /* 
  * Size of heap if it is 0 it will be dynamically defined by memory size, 
  * otherwise the value should be changed by binary patch 
@@ -75,6 +73,7 @@ extern void _exit(int);  /* define in exit.c */
 void bsp_libc_init( void *, unsigned32, int );
 void bsp_postdriver_hook(void);
 extern void rtems_irq_mngt_init();
+extern void _IBMPC_initVideo(void);
 
 /*-------------------------------------------------------------------------+
 |         Function: bsp_pretasking_hook
@@ -151,6 +150,10 @@ void bsp_start( void )
    * Calibrate variable for 1ms-loop (see timer.c)
    */
   Calibrate_loop_1ms();
+  /*
+   * Initialize printk channel
+   */
+  _IBMPC_initVideo();
 
   rtemsFreeMemStart = (rtems_unsigned32)&_end + _stack_size;
                                     /* set the value of start of free memory. */

c/src/lib/libbsp/i386/shared/io/bspIo.h

@@ -26,7 +26,6 @@ typedef char 	(*BSP_polling_getchar_function_type) 	(void);
 
 extern 	BSP_output_char_function_type 		BSP_output_char;
 extern 	BSP_polling_getchar_function_type 	BSP_poll_char;
-extern	void BSP_emergency_output_init(void);
 /*
  * All the function declared as extern after this comment
  * are available for each ix86 BSP by compiling and linking

c/src/lib/libbsp/i386/shared/irq/irq_init.c

@@ -119,16 +119,18 @@ void  rtems_irq_mngt_init()
     unsigned			limit;
     unsigned int 		level;
 
-    
     i386_get_info_from_IDTR (&idt_entry_tbl, &limit);
-    
+    /* Convert limit into number of entries */
+    limit = (limit + 1) / sizeof(interrupt_gate_descriptor);    
+
     _CPU_ISR_Disable(level);
 
     /*
      * Init the complete IDT vector table with defaultRawIrq value
      */
-    for (i = 0; i < IDT_SIZE; i++) {
+    for (i = 0; i < limit; i++) {
-      idtHdl[i] = defaultRawIrq;
+      idtHdl[i] 	 = defaultRawIrq;
+      idtHdl[i].idtIndex = i;
     }
     raw_initial_config.idtSize = IDT_SIZE;
     raw_initial_config.defaultRawEntry = defaultRawIrq;
@@ -138,7 +140,6 @@ void  rtems_irq_mngt_init()
       /*
        * put something here that will show the failure...
        */
-      BSP_emergency_output_init();
       printk("Unable to initialize IDT!!! System locked\n");
       while (1);
     }
@@ -159,7 +160,8 @@ void  rtems_irq_mngt_init()
      * re-init the rtemsIrq table
      */
     for (i = 0; i < PC_386_IRQ_LINES_NUMBER; i++) {
-      rtemsIrq[i] = defaultIrq;
+      rtemsIrq[i]      = defaultIrq;
+      rtemsIrq[i].name = i;
     }
     /*
      * Init initial Interrupt management config
@@ -169,11 +171,11 @@ void  rtems_irq_mngt_init()
     initial_config.irqHdlTbl	= rtemsIrq;
     initial_config.irqBase	= PC386_ASM_IRQ_VECTOR_BASE;
     initial_config.irqPrioTbl	= irqPrioTable;
+
     if (!pc386_rtems_irq_mngt_set(&initial_config)) {
       /*
        * put something here that will show the failure...
        */
-      BSP_emergency_output_init();
       printk("Unable to initialize RTEMS interrupt Management!!! System locked\n");
       while (1);
     }
@@ -188,8 +190,6 @@ void  rtems_irq_mngt_init()
        */
       unsigned tmp;
 
-      BSP_emergency_output_init();
-      
       printk("idt_entry_tbl =  %x Interrupt_descriptor_table addr = %x\n",
 	     idt_entry_tbl, &Interrupt_descriptor_table);
       tmp = (unsigned) get_hdl_from_vector (PC386_ASM_IRQ_VECTOR_BASE + PC_386_PERIODIC_TIMER);