xref: /openbmc/u-boot/arch/arm/mach-at91/atmel_sfr.c (revision e8f80a5a)
1*83d290c5STom Rini // SPDX-License-Identifier: GPL-2.0+
2e4677f1aSWenyou Yang /*
3e4677f1aSWenyou Yang  * Copyright (C) 2015 Atmel Corporation
4e4677f1aSWenyou Yang  *		      Wenyou Yang <wenyou.yang@atmel.com>
5e4677f1aSWenyou Yang  */
6e4677f1aSWenyou Yang 
7e4677f1aSWenyou Yang #include <common.h>
8e61ed48fSWenyou Yang #include <asm/hardware.h>
9e4677f1aSWenyou Yang #include <asm/io.h>
10e4677f1aSWenyou Yang #include <asm/arch/sama5_sfr.h>
11e4677f1aSWenyou Yang 
redirect_int_from_saic_to_aic(void)12e4677f1aSWenyou Yang void redirect_int_from_saic_to_aic(void)
13e4677f1aSWenyou Yang {
14e4677f1aSWenyou Yang 	struct atmel_sfr *sfr = (struct atmel_sfr *)ATMEL_BASE_SFR;
15e4677f1aSWenyou Yang 	u32 key32;
16e4677f1aSWenyou Yang 
17e4677f1aSWenyou Yang 	if (!(readl(&sfr->aicredir) & ATMEL_SFR_AICREDIR_NSAIC)) {
18e4677f1aSWenyou Yang 		key32 = readl(&sfr->sn1) ^ ATMEL_SFR_AICREDIR_KEY;
19e4677f1aSWenyou Yang 		writel((key32 | ATMEL_SFR_AICREDIR_NSAIC), &sfr->aicredir);
20e4677f1aSWenyou Yang 	}
21e4677f1aSWenyou Yang }
22f7cf291aSSamuel Mescoff 
configure_2nd_sram_as_l2_cache(void)23f7cf291aSSamuel Mescoff void configure_2nd_sram_as_l2_cache(void)
24f7cf291aSSamuel Mescoff {
25f7cf291aSSamuel Mescoff 	struct atmel_sfr *sfr = (struct atmel_sfr *)ATMEL_BASE_SFR;
26f7cf291aSSamuel Mescoff 
27f7cf291aSSamuel Mescoff 	writel(1, &sfr->l2cc_hramc);
28f7cf291aSSamuel Mescoff }
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