drivers/firmware/google/memconsole.h

   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  */
  28 void 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  */
  36 int memconsole_sysfs_init(void);
  37
  38 /* memconsole_exit
  39  *
  40  * Unmap the console buffer.
  41  */
  42 void memconsole_exit(void);
  43
  44 #endif /* __FIRMWARE_GOOGLE_MEMCONSOLE_H */