| 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
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| 2 | /* |
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| 3 | * Copyright (C) 2020 Western Digital Corporation or its affiliates. |
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| 4 | */ |
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| 5 | #include <linux/init.h> |
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| 6 | #include <linux/libfdt.h> |
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| 7 | #include <linux/pgtable.h> |
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| 8 | #include <asm/soc.h> |
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| 9 | |
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| 10 | /* |
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| 11 | * This is called extremly early, before parse_dtb(), to allow initializing |
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| 12 | * SoC hardware before memory or any device driver initialization. |
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| 13 | */ |
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| 14 | void __init soc_early_init(void) |
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| 15 | { |
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| 16 | void (*early_fn)(const void *fdt); |
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| 17 | const struct of_device_id *s; |
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| 18 | const void *fdt = dtb_early_va; |
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| 19 | |
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| 20 | for (s = (void *)&__soc_early_init_table_start; |
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| 21 | (void *)s < (void *)&__soc_early_init_table_end; s++) { |
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| 22 | if (!fdt_node_check_compatible(fdt, 0, s->compatible)) { |
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| 23 | early_fn = s->data; |
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| 24 | early_fn(fdt); |
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| 25 | return; |
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| 26 | } |
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| 27 | } |
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| 28 | } |
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| 29 | |
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