u-boot/arch/avr32/lib/interrupts.c
Andreas Bießmann a752a8b4c4 avr32: add generic board support
Signed-off-by: Andreas Bießmann <andreas.devel@googlemail.com>
2015-02-17 22:54:38 +01:00

35 lines
583 B
C

/*
* Copyright (C) 2006 Atmel Corporation
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <asm/sysreg.h>
int interrupt_init(void)
{
return 0;
}
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);
}