12874c5fdSThomas Gleixner // SPDX-License-Identifier: GPL-2.0-or-later 212e84142SMichal Simek /* 312e84142SMichal Simek * Procedures for creating, accessing and interpreting the device tree. 412e84142SMichal Simek * 512e84142SMichal Simek * Paul Mackerras August 1996. 612e84142SMichal Simek * Copyright (C) 1996-2005 Paul Mackerras. 712e84142SMichal Simek * 812e84142SMichal Simek * Adapted for 64bit PowerPC by Dave Engebretsen and Peter Bergner. 912e84142SMichal Simek * {engebret|bergner}@us.ibm.com 1012e84142SMichal Simek */ 1112e84142SMichal Simek 1212e84142SMichal Simek #include <linux/kernel.h> 1312e84142SMichal Simek #include <linux/string.h> 1495f72d1eSYinghai Lu #include <linux/memblock.h> 155c9f303eSRob Herring #include <linux/of_fdt.h> 1612e84142SMichal Simek early_init_devtree(void * params)1712e84142SMichal Simekvoid __init early_init_devtree(void *params) 1812e84142SMichal Simek { 1912e84142SMichal Simek pr_debug(" -> early_init_devtree(%p)\n", params); 2012e84142SMichal Simek 21*1103d3b5SUsama Arif early_init_dt_scan(params, __pa(params)); 22dc0b4335SRob Herring if (!strlen(boot_command_line)) 23fdd932efSAzeem Shaikh strscpy(boot_command_line, cmd_line, COMMAND_LINE_SIZE); 24dc0b4335SRob Herring 251aadc056STejun Heo memblock_allow_resize(); 2612e84142SMichal Simek 2795f72d1eSYinghai Lu pr_debug("Phys. mem: %lx\n", (unsigned long) memblock_phys_mem_size()); 2812e84142SMichal Simek 2912e84142SMichal Simek pr_debug(" <- early_init_devtree()\n"); 3012e84142SMichal Simek } 31