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