c/src/lib/libbsp/sparc/leon3/startup/eirq.c


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25

/*
 *  GRLIB/LEON3 extended interrupt controller
 *
 *  COPYRIGHT (c) 2011
 *  Aeroflex Gaisler
 *
 *  The license and distribution terms for this file may be
 *  found in the file LICENSE in this distribution or at
 *  http://www.rtems.com/license/LICENSE.
 *
 */

#include <leon.h>

/* GRLIB extended IRQ controller IRQ number */
int LEON3_IrqCtrl_EIrq = -1;

/* Initialize Extended Interrupt controller */
void leon3_ext_irq_init(void)
{
  if ( (LEON3_IrqCtrl_Regs->mpstat >> 16) & 0xf ) {
    /* Extended IRQ controller available */
    LEON3_IrqCtrl_EIrq = (LEON3_IrqCtrl_Regs->mpstat >> 16) & 0xf;
  }
}