u-boot/lib_avr32/interrupts.c
Haavard Skinnemoen df9c25ea04 AVR32: Fix logic inversion in disable_interrupts()
disable_interrupts() should return nonzero if interrupts were
_enabled_ before, not disabled.

Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
2007-12-17 11:02:44 +01:00

40 lines
1.1 KiB
C

/*
* Copyright (C) 2006 Atmel Corporation
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#include <common.h>
#include <asm/sysreg.h>
void enable_interrupts(void)
{
asm volatile("csrf %0" : : "n"(SYSREG_GM_OFFSET));
}
int disable_interrupts(void)
{
unsigned long sr;
sr = sysreg_read(SR);
asm volatile("ssrf %0" : : "n"(SYSREG_GM_OFFSET));
return !SYSREG_BFEXT(GM, sr);
}