c/src/lib/libbsp/mips/malta/irq/interruptmask.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
26
27
28
29
30
31
32
33
34
35
36

/**
 *  @file
 *
 *  This file contains the implementation of the MIPS port
 *  support routine which provides the BSP specific default
 *  interrupt mask.
 */

/*
 *  COPYRIGHT (c) 1989-2012.
 *  On-Line Applications Research Corporation (OAR).
 *
 *  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 <rtems.h>

/*
 *  This function returns a mask value which is used to select the bits
 *  in the processor status register that can be set to enable interrupts.
 *  The mask value should not include the 2 software interrupt enable bits.
 */

uint32_t mips_interrupt_mask( void )
{
  uint32_t interrupt_mask;

  /*
   * This has only been tested with qemu for the mips malta and
   * may not be correct for the 24k on real hardware.
   */
  interrupt_mask = 0x0000ff00;
  return(interrupt_mask);
}