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 #include <asm/prom.h>
  15
  16 int coherentio;         /* 0 => no DMA cache coherency (may be set by user) */
  17 int hw_coherentio;      /* 0 => no HW DMA cache coherency (reflects real HW) */
  18
  19 const char *get_system_type(void)
  20 {
  21         return "MIPS SEAD3";
  22 }
  23
  24 void __init plat_mem_setup(void)
  25 {
  26         /*
  27          * Load the builtin devicetree. This causes the chosen node to be
  28          * parsed resulting in our memory appearing
  29          */
  30         __dt_setup_arch(&__dtb_start);
  31 }
  32
  33 void __init device_tree_init(void)
  34 {
  35         unsigned long base, size;
  36
  37         if (!initial_boot_params)
  38                 return;
  39
  40         base = virt_to_phys((void *)initial_boot_params);
  41         size = be32_to_cpu(initial_boot_params->totalsize);
  42
  43         /* Before we do anything, lets reserve the dt blob */
  44         reserve_bootmem(base, size, BOOTMEM_DEFAULT);
  45
  46         unflatten_device_tree();
  47 }