1/*
 2 * Copyright Altera Corporation (C) 2016. All rights reserved.
 3 *
 4 * This program is free software; you can redistribute it and/or modify it
 5 * under the terms and conditions of the GNU General Public License,
 6 * version 2, as published by the Free Software Foundation.
 7 *
 8 * This program is distributed in the hope it will be useful, but WITHOUT
 9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
10 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
11 * more details.
12 *
13 * You should have received a copy of the GNU General Public License along with
14 * this program.  If not, see <http://www.gnu.org/licenses/>.
15 */
16#include <linux/io.h>
17#include <linux/of_platform.h>
18#include <linux/of_address.h>
19
20void socfpga_init_l2_ecc(void)
21{
22	struct device_node *np;
23	void __iomem *mapped_l2_edac_addr;
24
25	np = of_find_compatible_node(NULL, NULL, "altr,socfpga-l2-ecc");
26	if (!np) {
27		pr_err("Unable to find socfpga-l2-ecc in dtb\n");
28		return;
29	}
30
31	mapped_l2_edac_addr = of_iomap(np, 0);
32	of_node_put(np);
33	if (!mapped_l2_edac_addr) {
34		pr_err("Unable to find L2 ECC mapping in dtb\n");
35		return;
36	}
37
38	/* Enable ECC */
39	writel(0x01, mapped_l2_edac_addr);
40	iounmap(mapped_l2_edac_addr);
41}