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335b1390 DLM |
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> | |
ca5999fd | 7 | #include <linux/pgtable.h> |
335b1390 DLM |
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 | } |