board/corscience/tricorder/tricorder-eeprom.h

   1 /* SPDX-License-Identifier: GPL-2.0+ */
   2 /*
   3  * (C) Copyright 2013
   4  * Corscience GmbH & Co. KG, <www.corscience.de>
   5  * Andreas Bießmann <andreas.biessmann@corscience.de>
   6  */
   7 #ifndef TRICORDER_EEPROM_H_
   8 #define TRICORDER_EEPROM_H_
   9
  10 #include <linux/compiler.h>
  11
  12 #define TRICORDER_EEPROM_MAGIC 0xc2a94f52
  13 #define TRICORDER_EEPROM_VERSION 1
  14
  15 #define TRICORDER_BOARD_NAME_LENGTH             12
  16 #define TRICORDER_BOARD_VERSION_LENGTH          4
  17 #define TRICORDER_BOARD_SERIAL_LENGTH           12
  18 #define TRICORDER_INTERFACE_VERSION_LENGTH      4
  19
  20 struct tricorder_eeprom {
  21         uint32_t magic;
  22         uint16_t length;
  23         uint16_t version;
  24         char board_name[TRICORDER_BOARD_NAME_LENGTH];
  25         char board_version[TRICORDER_BOARD_VERSION_LENGTH];
  26         char board_serial[TRICORDER_BOARD_SERIAL_LENGTH];
  27         char interface_version[TRICORDER_INTERFACE_VERSION_LENGTH];
  28         uint32_t crc32;
  29 } __packed;
  30
  31 #define TRICORDER_EEPROM_SIZE           sizeof(struct tricorder_eeprom)
  32 #define TRICORDER_EEPROM_CRC_SIZE       (TRICORDER_EEPROM_SIZE - \
  33                                          sizeof(uint32_t))
  34
  35 /**
  36  * @brief read eeprom information from a specific eeprom address
  37  */
  38 int tricorder_get_eeprom(int addr, struct tricorder_eeprom *eeprom);
  39
  40 #endif /* TRICORDER_EEPROM_H_ */