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 */
14 void __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 }
29
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