arch/mips/loongson64/setup.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  * Copyright (C) 2007 Lemote Inc. & Institute of Computing Technology
   4  * Author: Fuxin Zhang, zhangfx@lemote.com
   5  */
   6 #include <linux/export.h>
   7 #include <linux/init.h>
   8
   9 #include <asm/wbflush.h>
  10 #include <asm/bootinfo.h>
  11 #include <linux/libfdt.h>
  12 #include <linux/of_fdt.h>
  13
  14 #include <asm/prom.h>
  15
  16 #include <loongson.h>
  17
  18 void *loongson_fdt_blob;
  19
  20 static void wbflush_loongson(void)
  21 {
  22         asm(".set\tpush\n\t"
  23             ".set\tnoreorder\n\t"
  24             ".set mips3\n\t"
  25             "sync\n\t"
  26             "nop\n\t"
  27             ".set\tpop\n\t"
  28             ".set mips0\n\t");
  29 }
  30
  31 void (*__wbflush)(void) = wbflush_loongson;
  32 EXPORT_SYMBOL(__wbflush);
  33
  34 void __init plat_mem_setup(void)
  35 {
  36         if (loongson_fdt_blob)
  37                 __dt_setup_arch(loongson_fdt_blob);
  38 }
  39
  40 void __init device_tree_init(void)
  41 {
  42         if (!initial_boot_params)
  43                 return;
  44
  45         unflatten_and_copy_device_tree();
  46 }