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/* irq_init.c

 *

 *  This file contains the implementation of rtems initialization

 *  related to interrupt handling.

 *

 *  CopyRight (C) 2000 Canon Research Centre France SA.

 *  Emmanuel Raguet, mailto:raguet@crf.canon.fr

 *

 *  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.

 *

 *  bsp_irq_init.c,v 1.1 2000/09/13 13:45:05 joel Exp

 */

#include <irq.h>

#include <bsp.h>

#include <registers.h>

void BSP_rtems_irq_mngt_init() {

  /* Initialize the vector table address in internal RAM */

  Regs[INTTAB] = VECTOR_TABLE;

  /* Initialize the GLOBAL INT CONTROL register */

  Regs[INTGCNTL] = 0x00;

  /* Mask all the interrupts */

  Regs[INTMASK] = 0xFFFF;

  /* Unmask the 2 arm interrupts IRQ and FIQ on the INT controller */

  Regs[INTMASKALL] = 0x0;

  /* Ack pending interrupt */

  while ( ( Regs[INTSTAT] & 0xF433 ) != 0 ) {

    Regs[INTACK] = 0xFFFF;

    Regs[INTEOI] = EOI;

  }

}