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