xref: /openbmc/u-boot/arch/arm/mach-at91/atmel_sfr.c (revision 48263504)
1 /*
2  * Copyright (C) 2015 Atmel Corporation
3  *		      Wenyou Yang <wenyou.yang@atmel.com>
4  *
5  * SPDX-License-Identifier:	GPL-2.0+
6  */
7 
8 #include <common.h>
9 #include <asm/hardware.h>
10 #include <asm/io.h>
11 #include <asm/arch/sama5_sfr.h>
12 
13 void redirect_int_from_saic_to_aic(void)
14 {
15 	struct atmel_sfr *sfr = (struct atmel_sfr *)ATMEL_BASE_SFR;
16 	u32 key32;
17 
18 	if (!(readl(&sfr->aicredir) & ATMEL_SFR_AICREDIR_NSAIC)) {
19 		key32 = readl(&sfr->sn1) ^ ATMEL_SFR_AICREDIR_KEY;
20 		writel((key32 | ATMEL_SFR_AICREDIR_NSAIC), &sfr->aicredir);
21 	}
22 }
23 
24 void configure_2nd_sram_as_l2_cache(void)
25 {
26 	struct atmel_sfr *sfr = (struct atmel_sfr *)ATMEL_BASE_SFR;
27 
28 	writel(1, &sfr->l2cc_hramc);
29 }
30