board/corscience/tricorder/tricorder-eeprom.h

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