arch/mips/mti-sead3/sead3-setup.c

   1 /*
   2  * This file is subject to the terms and conditions of the GNU General Public
   3  * License.  See the file "COPYING" in the main directory of this archive
   4  * for more details.
   5  *
   6  * Copyright (C) 2012 MIPS Technologies, Inc.  All rights reserved.
   7  */
   8 #include <linux/init.h>
   9 #include <linux/of_platform.h>
  10 #include <linux/of_fdt.h>
  11 #include <linux/bootmem.h>
  12
  13 #include <asm/mips-boards/generic.h>
  14
  15 const char *get_system_type(void)
  16 {
  17         return "MIPS SEAD3";
  18 }
  19
  20 void __init plat_mem_setup(void)
  21 {
  22         /*
  23          * Load the builtin devicetree. This causes the chosen node to be
  24          * parsed resulting in our memory appearing
  25          */
  26         __dt_setup_arch(&__dtb_start);
  27 }
  28
  29 void __init device_tree_init(void)
  30 {
  31         unsigned long base, size;
  32
  33         if (!initial_boot_params)
  34                 return;
  35
  36         base = virt_to_phys((void *)initial_boot_params);
  37         size = be32_to_cpu(initial_boot_params->totalsize);
  38
  39         /* Before we do anything, lets reserve the dt blob */
  40         reserve_bootmem(base, size, BOOTMEM_DEFAULT);
  41
  42         unflatten_device_tree();
  43 }