LXR linux/arch/c6x/kernel/devicetree.c

   1/*
   2 *  Architecture specific OF callbacks.
   3 *
   4 *  Copyright (C) 2011 Texas Instruments Incorporated
   5 *  Author: Mark Salter <msalter@redhat.com>
   6 *
   7 *  This program is free software; you can redistribute it and/or modify
   8 *  it under the terms of the GNU General Public License version 2 as
   9 *  published by the Free Software Foundation.
  10 *
  11 */
  12#include <linux/init.h>
  13#include <linux/of.h>
  14#include <linux/of_fdt.h>
  15#include <linux/initrd.h>
  16#include <linux/memblock.h>
  17
  18void __init early_init_devtree(void *params)
  19{
  20        /* Setup flat device-tree pointer */
  21        initial_boot_params = params;
  22
  23        /* Retrieve various informations from the /chosen node of the
  24         * device-tree, including the platform type, initrd location and
  25         * size and more ...
  26         */
  27        of_scan_flat_dt(early_init_dt_scan_chosen, c6x_command_line);
  28
  29        /* Scan memory nodes and rebuild MEMBLOCKs */
  30        of_scan_flat_dt(early_init_dt_scan_root, NULL);
  31        of_scan_flat_dt(early_init_dt_scan_memory, NULL);
  32}
  33
  34
  35#ifdef CONFIG_BLK_DEV_INITRD
  36void __init early_init_dt_setup_initrd_arch(unsigned long start,
  37                unsigned long end)
  38{
  39        initrd_start = (unsigned long)__va(start);
  40        initrd_end = (unsigned long)__va(end);
  41        initrd_below_start_ok = 1;
  42}
  43#endif
  44
  45void __init early_init_dt_add_memory_arch(u64 base, u64 size)
  46{
  47        c6x_add_memory(base, size);
  48}
  49
  50void * __init early_init_dt_alloc_memory_arch(u64 size, u64 align)
  51{
  52        return __va(memblock_alloc(size, align));
  53}
  54