Commit | Line | Data |
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7a1a44c9 JC |
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 | * | |
97b92108 | 6 | * Copyright (C) 2013 John Crispin <john@phrozen.org> |
7a1a44c9 JC |
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 | ||
15 | static void __iomem *membase = (void __iomem *) KSEG1ADDR(BOOTROM_OFFSET); | |
16 | ||
17 | static int bootrom_show(struct seq_file *s, void *unused) | |
18 | { | |
19 | seq_write(s, membase, BOOTROM_SIZE); | |
20 | ||
21 | return 0; | |
22 | } | |
23 | ||
24 | static int bootrom_open(struct inode *inode, struct file *file) | |
25 | { | |
26 | return single_open(file, bootrom_show, NULL); | |
27 | } | |
28 | ||
29 | static 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 | ||
36 | static 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 | ||
48 | postcore_initcall(bootrom_setup); |