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// SPDX-License-Identifier: BSD-1-Clause
/*
* Copyright (c) 2015, Atmel Corporation
*
* Atmel's name may not be used to endorse or promote products derived from
* this software without specific prior written permission.
*/
#include <mach/at91/aic.h>
#include <io.h>
#define SFR_AICREDIR 0x54
#define SFR_SN1 0x50 /* Serial Number 1 Register */
void at91_aic_redir(void __iomem *sfr, u32 key)
{
u32 key32;
if (readl(sfr + SFR_AICREDIR) & 0x01)
return;
key32 = readl(sfr + SFR_SN1) ^ key;
writel(key32 | 0x01, sfr + SFR_AICREDIR);
/* bits[31:1] = key */
/* bit[0] = 1 => all interrupts redirected to AIC */
/* bit[0] = 0 => secure interrupts directed to SAIC,
others to AIC (default) */
}
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