diff options
Diffstat (limited to 'arch/avr32/lib/interrupts.c')
-rw-r--r-- | arch/avr32/lib/interrupts.c | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/arch/avr32/lib/interrupts.c b/arch/avr32/lib/interrupts.c new file mode 100644 index 0000000000..bbbc490db2 --- /dev/null +++ b/arch/avr32/lib/interrupts.c @@ -0,0 +1,46 @@ +/* + * 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)); + +#ifdef CONFIG_AT32UC3A0xxx + /* Two NOPs are required after masking interrupts on the + * AT32UC3A0512ES. See errata 41.4.5.5. */ + asm("nop"); + asm("nop"); +#endif + + return !SYSREG_BFEXT(GM, sr); +} |