1/*
 2 * memconsole.h
 3 *
 4 * Internal headers of the memory based BIOS console.
 5 *
 6 * Copyright 2017 Google Inc.
 7 *
 8 * This program is free software; you can redistribute it and/or modify
 9 * it under the terms of the GNU General Public License v2.0 as published by
10 * the Free Software Foundation.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15 * GNU General Public License for more details.
16 */
17
18#ifndef __FIRMWARE_GOOGLE_MEMCONSOLE_H
19#define __FIRMWARE_GOOGLE_MEMCONSOLE_H
20
21#include <linux/types.h>
22
23/*
24 * memconsole_setup
25 *
26 * Initialize the memory console, passing the function to handle read accesses.
27 */
28void memconsole_setup(ssize_t (*read_func)(char *, loff_t, size_t));
29
30/*
31 * memconsole_sysfs_init
32 *
33 * Update memory console length and create binary file
34 * for firmware object.
35 */
36int memconsole_sysfs_init(void);
37
38/* memconsole_exit
39 *
40 * Unmap the console buffer.
41 */
42void memconsole_exit(void);
43
44#endif /* __FIRMWARE_GOOGLE_MEMCONSOLE_H */