firmware/google/memconsole.h

0001 /* SPDX-License-Identifier: GPL-2.0-only */
0002 /*
0003  * memconsole.h
0004  *
0005  * Internal headers of the memory based BIOS console.
0006  *
0007  * Copyright 2017 Google Inc.
0008  */
0009
0010 #ifndef __FIRMWARE_GOOGLE_MEMCONSOLE_H
0011 #define __FIRMWARE_GOOGLE_MEMCONSOLE_H
0012
0013 #include <linux/types.h>
0014
0015 /*
0016  * memconsole_setup
0017  *
0018  * Initialize the memory console, passing the function to handle read accesses.
0019  */
0020 void memconsole_setup(ssize_t (*read_func)(char *, loff_t, size_t));
0021
0022 /*
0023  * memconsole_sysfs_init
0024  *
0025  * Update memory console length and create binary file
0026  * for firmware object.
0027  */
0028 int memconsole_sysfs_init(void);
0029
0030 /* memconsole_exit
0031  *
0032  * Unmap the console buffer.
0033  */
0034 void memconsole_exit(void);
0035
0036 #endif /* __FIRMWARE_GOOGLE_MEMCONSOLE_H */