/* * 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 #include 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); }