mirror of https://gitee.com/openkylin/linux.git
50 lines
1.5 KiB
C
50 lines
1.5 KiB
C
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/*
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* Copyright Altera Corporation (C) 2016. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <linux/io.h>
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#include <linux/genalloc.h>
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#include <linux/module.h>
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#include <linux/of_address.h>
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#include <linux/of_platform.h>
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#define ALTR_OCRAM_CLEAR_ECC 0x00000018
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#define ALTR_OCRAM_ECC_EN 0x00000019
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void socfpga_init_ocram_ecc(void)
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{
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struct device_node *np;
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void __iomem *mapped_ocr_edac_addr;
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/* Find the OCRAM EDAC device tree node */
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np = of_find_compatible_node(NULL, NULL, "altr,socfpga-ocram-ecc");
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if (!np) {
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pr_err("Unable to find socfpga-ocram-ecc\n");
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return;
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}
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mapped_ocr_edac_addr = of_iomap(np, 0);
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of_node_put(np);
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if (!mapped_ocr_edac_addr) {
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pr_err("Unable to map OCRAM ecc regs.\n");
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return;
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}
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/* Clear any pending OCRAM ECC interrupts, then enable ECC */
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writel(ALTR_OCRAM_CLEAR_ECC, mapped_ocr_edac_addr);
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writel(ALTR_OCRAM_ECC_EN, mapped_ocr_edac_addr);
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iounmap(mapped_ocr_edac_addr);
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}
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