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 | |