// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Device tree support
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*
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* Copyright (C) 2013, 2015 Altera Corporation
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* Copyright (C) 2010 Thomas Chou <thomas@wytron.com.tw>
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*
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* Based on MIPS support for CONFIG_OF device tree support
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*
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* Copyright (C) 2010 Cisco Systems Inc. <dediao@cisco.com>
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*/
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#include <linux/init.h>
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#include <linux/types.h>
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#include <linux/memblock.h>
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#include <linux/of.h>
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#include <linux/of_fdt.h>
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#include <linux/io.h>
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#include <asm/sections.h>
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void __init early_init_devtree(void *params)
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{
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__be32 *dtb = (u32 *)__dtb_start;
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#if defined(CONFIG_NIOS2_DTB_AT_PHYS_ADDR)
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if (be32_to_cpup((__be32 *)CONFIG_NIOS2_DTB_PHYS_ADDR) ==
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OF_DT_HEADER) {
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params = (void *)CONFIG_NIOS2_DTB_PHYS_ADDR;
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early_init_dt_scan(params);
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return;
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}
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#endif
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if (be32_to_cpu((__be32) *dtb) == OF_DT_HEADER)
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params = (void *)__dtb_start;
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early_init_dt_scan(params);
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}
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