src/soc/intel/common/block/include/intelblocks/imc.h

   1 /*
   2  * This file is part of the coreboot project.
   3  *
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; version 2 of the License.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  */
  14
  15 #include <device/pci.h>
  16 #include <stdint.h>
  17
  18 #ifndef SOC_INTEL_COMMON_BLOCK_IMC_H
  19 #define SOC_INTEL_COMMON_BLOCK_IMC_H
  20
  21 enum smbus_command { IMC_READ, IMC_WRITE };
  22
  23 enum access_width { IMC_DATA_BYTE, IMC_DATA_WORD };
  24
  25 enum memory_controller_id { IMC_CONTROLLER_ID0 = 0, IMC_CONTROLLER_ID1 };
  26
  27 enum device_type_id {
  28         IMC_DEVICE_TSOD = 0x3,
  29         IMC_DEVICE_WP_EEPROM = 0x6,
  30         IMC_DEVICE_EEPROM = 0xa
  31 };
  32
  33 /* Initiate SMBus/I2C transaction to DIMM EEPROM */
  34 int imc_smbus_spd_xfer(pci_devfn_t dev, uint8_t slave_addr, uint8_t bus_addr,
  35                        enum device_type_id dti, enum access_width width,
  36                        enum memory_controller_id mcid, enum smbus_command cmd, void *data);
  37 #endif