fdt.c (04b954a673dd02f585a2769c4945a43880faa989) fdt.c (4ef7b373df330bc0ff037dc4792d373c9346375f)
1/*
2 * Functions for working with the Flattened Device Tree data format
3 *
4 * Copyright 2009 Benjamin Herrenschmidt, IBM Corp
5 * benh@kernel.crashing.org
6 *
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License
9 * version 2 as published by the Free Software Foundation.
10 */
11
12#include <linux/kernel.h>
1/*
2 * Functions for working with the Flattened Device Tree data format
3 *
4 * Copyright 2009 Benjamin Herrenschmidt, IBM Corp
5 * benh@kernel.crashing.org
6 *
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License
9 * version 2 as published by the Free Software Foundation.
10 */
11
12#include <linux/kernel.h>
13#include <linux/lmb.h>
14#include <linux/initrd.h>
15#include <linux/of.h>
16#include <linux/of_fdt.h>
13#include <linux/initrd.h>
14#include <linux/of.h>
15#include <linux/of_fdt.h>
16#include <linux/string.h>
17#include <linux/errno.h>
17
18
18
19#ifdef CONFIG_PPC
20#include <asm/machdep.h>
21#endif /* CONFIG_PPC */
22
19#ifdef CONFIG_PPC
20#include <asm/machdep.h>
21#endif /* CONFIG_PPC */
22
23#include <asm/page.h>
24
23int __initdata dt_root_addr_cells;
24int __initdata dt_root_size_cells;
25
26struct boot_param_header *initial_boot_params;
27
28char *find_flat_dt_string(u32 offset)
29{
30 return ((char *)initial_boot_params) +

--- 524 unchanged lines hidden (view full) ---

555 start = ((unsigned long)initial_boot_params) +
556 be32_to_cpu(initial_boot_params->off_dt_struct);
557 size = unflatten_dt_node(0, &start, NULL, NULL, 0);
558 size = (size | 3) + 1;
559
560 pr_debug(" size is %lx, allocating...\n", size);
561
562 /* Allocate memory for the expanded device tree */
25int __initdata dt_root_addr_cells;
26int __initdata dt_root_size_cells;
27
28struct boot_param_header *initial_boot_params;
29
30char *find_flat_dt_string(u32 offset)
31{
32 return ((char *)initial_boot_params) +

--- 524 unchanged lines hidden (view full) ---

557 start = ((unsigned long)initial_boot_params) +
558 be32_to_cpu(initial_boot_params->off_dt_struct);
559 size = unflatten_dt_node(0, &start, NULL, NULL, 0);
560 size = (size | 3) + 1;
561
562 pr_debug(" size is %lx, allocating...\n", size);
563
564 /* Allocate memory for the expanded device tree */
563 mem = lmb_alloc(size + 4, __alignof__(struct device_node));
565 mem = early_init_dt_alloc_memory_arch(size + 4,
566 __alignof__(struct device_node));
564 mem = (unsigned long) __va(mem);
565
566 ((__be32 *)mem)[size / 4] = cpu_to_be32(0xdeadbeef);
567
568 pr_debug(" unflattening %lx...\n", mem);
569
570 /* Second pass, do actual unflattening */
571 start = ((unsigned long)initial_boot_params) +

--- 16 unchanged lines hidden --- 		567 mem = (unsigned long) __va(mem);
568
569 ((__be32 *)mem)[size / 4] = cpu_to_be32(0xdeadbeef);
570
571 pr_debug(" unflattening %lx...\n", mem);
572
573 /* Second pass, do actual unflattening */
574 start = ((unsigned long)initial_boot_params) +

--- 16 unchanged lines hidden ---