1 /* 2 * Procedures for creating, accessing and interpreting the device tree. 3 * 4 * Paul Mackerras August 1996. 5 * Copyright (C) 1996-2005 Paul Mackerras. 6 * 7 * Adapted for 64bit PowerPC by Dave Engebretsen and Peter Bergner. 8 * {engebret|bergner}@us.ibm.com 9 * 10 * This program is free software; you can redistribute it and/or 11 * modify it under the terms of the GNU General Public License 12 * as published by the Free Software Foundation; either version 13 * 2 of the License, or (at your option) any later version. 14 */ 15 16 #include <linux/kernel.h> 17 #include <linux/string.h> 18 #include <linux/memblock.h> 19 #include <linux/of_fdt.h> 20 21 void __init early_init_devtree(void *params) 22 { 23 pr_debug(" -> early_init_devtree(%p)\n", params); 24 25 early_init_dt_scan(params); 26 if (!strlen(boot_command_line)) 27 strlcpy(boot_command_line, cmd_line, COMMAND_LINE_SIZE); 28 29 memblock_allow_resize(); 30 31 pr_debug("Phys. mem: %lx\n", (unsigned long) memblock_phys_mem_size()); 32 33 pr_debug(" <- early_init_devtree()\n"); 34 } 35