1// SPDX-License-Identifier: GPL-2.0-or-later
 2/*
 3 * Copyright (C) 2020 Western Digital Corporation or its affiliates.
 4 */
 5#include <linux/init.h>
 6#include <linux/libfdt.h>
 7#include <linux/pgtable.h>
 8#include <asm/soc.h>
 9
10/*
11 * This is called extremly early, before parse_dtb(), to allow initializing
12 * SoC hardware before memory or any device driver initialization.
13 */
14void __init soc_early_init(void)
15{
16	void (*early_fn)(const void *fdt);
17	const struct of_device_id *s;
18	const void *fdt = dtb_early_va;
19
20	for (s = (void *)&__soc_early_init_table_start;
21	     (void *)s < (void *)&__soc_early_init_table_end; s++) {
22		if (!fdt_node_check_compatible(fdt, 0, s->compatible)) {
23			early_fn = s->data;
24			early_fn(fdt);
25			return;
26		}
27	}
28}