1/*
2 * This program is free software; you can redistribute it and/or modify it
3 * under the terms of the GNU General Public License version 2 as published
4 * by the Free Software Foundation.
5 *
6 * Copyright (C) 2013 John Crispin <blogic@openwrt.org>
7 */
8
9#include <linux/debugfs.h>
10#include <linux/seq_file.h>
11
12#define BOOTROM_OFFSET	0x10118000
13#define BOOTROM_SIZE	0x8000
14
15static void __iomem *membase = (void __iomem *) KSEG1ADDR(BOOTROM_OFFSET);
16
17static int bootrom_show(struct seq_file *s, void *unused)
18{
19	seq_write(s, membase, BOOTROM_SIZE);
20
21	return 0;
22}
23
24static int bootrom_open(struct inode *inode, struct file *file)
25{
26	return single_open(file, bootrom_show, NULL);
27}
28
29static const struct file_operations bootrom_file_ops = {
30	.open		= bootrom_open,
31	.read		= seq_read,
32	.llseek		= seq_lseek,
33	.release	= single_release,
34};
35
36static int bootrom_setup(void)
37{
38	if (!debugfs_create_file("bootrom", 0444,
39			NULL, NULL, &bootrom_file_ops)) {
40		pr_err("Failed to create bootrom debugfs file\n");
41
42		return -EINVAL;
43	}
44
45	return 0;
46}
47
48postcore_initcall(bootrom_setup);
49