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37 lines
896 B
37 lines
896 B
// 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 <[email protected]> |
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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. <[email protected]> |
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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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