src/soc/intel/skylake/include/soc/pei_data.h

   1 /*
   2  * UEFI PEI wrapper
   3  *
   4  * Copyright (C) 2014 Google Inc.
   5  * Copyright (C) 2015 Intel Corporation.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions are met:
   9  *     * Redistributions of source code must retain the above copyright
  10  *       notice, this list of conditions and the following disclaimer.
  11  *     * Redistributions in binary form must reproduce the above copyright
  12  *       notice, this list of conditions and the following disclaimer in the
  13  *       documentation and/or other materials provided with the distribution.
  14  *     * Neither the name of Google Inc. nor the
  15  *       names of its contributors may be used to endorse or promote products
  16  *       derived from this software without specific prior written permission.
  17  *
  18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  19  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  20  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  21  * ARE DISCLAIMED. IN NO EVENT SHALL GOOGLE INC BE LIABLE FOR ANY DIRECT,
  22  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  23  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  24  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  25  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  26  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  27  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  28  */
  29
  30 #ifndef _PEI_DATA_H_
  31 #define _PEI_DATA_H_
  32
  33 #include <types.h>
  34
  35 #define PEI_VERSION 22
  36
  37 #define ABI_X86 __attribute__((regparm(0)))
  38
  39 typedef void ABI_X86(*tx_byte_func)(unsigned char byte);
  40
  41 struct pei_data {
  42         uint32_t pei_version;
  43
  44         int ec_present;
  45
  46         /* Console output function */
  47         tx_byte_func tx_byte;
  48
  49         /*
  50          * DIMM SPD data for memory down configurations
  51          * [CHANNEL][SLOT][SPD]
  52          */
  53         uint8_t spd_data[2][2][512];
  54
  55         /*
  56          * LPDDR3 DQ byte map
  57          * [CHANNEL][ITERATION][2]
  58          *
  59          * Maps which PI clocks are used by what LPDDR DQ Bytes (from CPU side)
  60          * DQByteMap[0] - ClkDQByteMap:
  61          * - If clock is per rank, program to [0xFF, 0xFF]
  62          * - If clock is shared by 2 ranks, program to [0xFF, 0] or [0, 0xFF]
  63          * - If clock is shared by 2 ranks but does not go to all bytes,
  64          *   Entry[i] defines which DQ bytes Group i services
  65          * DQByteMap[1] - CmdNDQByteMap: [0] is CmdN/CAA and [1] is CmdN/CAB
  66          * DQByteMap[2] - CmdSDQByteMap: [0] is CmdS/CAA and [1] is CmdS/CAB
  67          * DQByteMap[3] - CkeDQByteMap : [0] is CKE /CAA and [1] is CKE /CAB
  68          *                For DDR, DQByteMap[3:1] = [0xFF, 0]
  69          * DQByteMap[4] - CtlDQByteMap : Always program to [0xFF, 0]
  70          *                since we have 1 CTL / rank
  71          * DQByteMap[5] - CmdVDQByteMap: Always program to [0xFF, 0]
  72          *                since we have 1 CA Vref
  73          */
  74         uint8_t dq_map[2][12];
  75
  76         /*
  77          * LPDDR3 Map from CPU DQS pins to SDRAM DQS pins
  78          * [CHANNEL][MAX_BYTES]
  79          */
  80         uint8_t dqs_map[2][8];
  81         uint16_t RcompResistor[3];
  82         uint16_t RcompTarget[5];
  83
  84         int mem_cfg_id;
  85 } __packed;
  86
  87 typedef struct pei_data PEI_DATA;
  88
  89 #endif /* _PEI_DATA_H_ */