1// SPDX-License-Identifier: GPL-2.0-only
 2/*
 3 *
 4 * Copyright (C) 2013 John Crispin <john@phrozen.org>
 5 */
 6
 7#include <linux/debugfs.h>
 8#include <linux/seq_file.h>
 9
10#define BOOTROM_OFFSET	0x10118000
11#define BOOTROM_SIZE	0x8000
12
13static void __iomem *membase = (void __iomem *) KSEG1ADDR(BOOTROM_OFFSET);
14
15static int bootrom_show(struct seq_file *s, void *unused)
16{
17	seq_write(s, membase, BOOTROM_SIZE);
18
19	return 0;
20}
21
22static int bootrom_open(struct inode *inode, struct file *file)
23{
24	return single_open(file, bootrom_show, NULL);
25}
26
27static const struct file_operations bootrom_file_ops = {
28	.open		= bootrom_open,
29	.read		= seq_read,
30	.llseek		= seq_lseek,
31	.release	= single_release,
32};
33
34static int __init bootrom_setup(void)
35{
36	debugfs_create_file("bootrom", 0444, NULL, NULL, &bootrom_file_ops);
37	return 0;
38}
39
40postcore_initcall(bootrom_setup);