prom.c

 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
17void __init early_init_devtree(void *params)
18{
19	pr_debug(" -> early_init_devtree(%p)\n", params);
20
21	early_init_dt_scan(params, __pa(params));
22	if (!strlen(boot_command_line))
23		strscpy(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}