arch/riscv/kernel/soc.c

   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 }