arch/avr32/lib/interrupts.c

   1 /*
   2  * Copyright (C) 2006 Atmel Corporation
   3  *
   4  * SPDX-License-Identifier:     GPL-2.0+
   5  */
   6 #include <common.h>
   7
   8 #include <asm/sysreg.h>
   9
  10 void enable_interrupts(void)
  11 {
  12         asm volatile("csrf      %0" : : "n"(SYSREG_GM_OFFSET));
  13 }
  14
  15 int disable_interrupts(void)
  16 {
  17         unsigned long sr;
  18
  19         sr = sysreg_read(SR);
  20         asm volatile("ssrf      %0" : : "n"(SYSREG_GM_OFFSET));
  21
  22 #ifdef CONFIG_AT32UC3A0xxx
  23         /* Two NOPs are required after masking interrupts on the
  24          * AT32UC3A0512ES. See errata 41.4.5.5. */
  25         asm("nop");
  26         asm("nop");
  27 #endif
  28
  29         return !SYSREG_BFEXT(GM, sr);
  30 }