1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * Procedures for creating, accessing and interpreting the device tree. 4 * 5 * Paul Mackerras August 1996. 6 * Copyright (C) 1996-2005 Paul Mackerras. 7 * 8 * Adapted for 64bit PowerPC by Dave Engebretsen and Peter Bergner. 9 * {engebret|bergner}@us.ibm.com 10 */ 11 12 #include <linux/kernel.h> 13 #include <linux/string.h> 14 #include <linux/memblock.h> 15 #include <linux/of_fdt.h> 16 17 void __init early_init_devtree(void *params) 18 { 19 pr_debug(" -> early_init_devtree(%p)\n", params); 20 21 early_init_dt_scan(params); 22 if (!strlen(boot_command_line)) 23 strlcpy(boot_command_line, cmd_line, COMMAND_LINE_SIZE); 24 25 memblock_allow_resize(); 26 27 pr_debug("Phys. mem: %lx\n", (unsigned long) memblock_phys_mem_size()); 28 29 pr_debug(" <- early_init_devtree()\n"); 30 } 31