12345678910111213141516171819202122232425262728293031323334353637 |
- // SPDX-License-Identifier: GPL-2.0-or-later
- /*
- * Device tree support
- *
- * Copyright (C) 2013, 2015 Altera Corporation
- * Copyright (C) 2010 Thomas Chou <[email protected]>
- *
- * Based on MIPS support for CONFIG_OF device tree support
- *
- * Copyright (C) 2010 Cisco Systems Inc. <[email protected]>
- */
- #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);
- }
|