src/drivers/intel/fsp2_0/include/fsp/upd.h

   1 /*
   2  * This file is part of the coreboot project.
   3  *
   4  * Copyright (C) 2016 Intel Corp.
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  */
  11
  12 #ifndef _FSP2_0_UPD_H_
  13 #define _FSP2_0_UPD_H_
  14
  15 #include <compiler.h>
  16
  17 struct FSP_UPD_HEADER {
  18         ///
  19         /// UPD Region Signature. This signature will be
  20         /// "XXXXXX_T" for FSP-T
  21         /// "XXXXXX_M" for FSP-M
  22         /// "XXXXXX_S" for FSP-S
  23         /// Where XXXXXX is an unique signature
  24         ///
  25         uint64_t                      Signature;
  26         ///
  27         /// Revision of the Data structure. For FSP v2.0 value is 1.
  28         ///
  29         uint8_t                       Revision;
  30         uint8_t                       Reserved[23];
  31 } __packed;
  32
  33 struct FSPM_ARCH_UPD {
  34         ///
  35         /// Revision of the structure. For FSP v2.0 value is 1.
  36         ///
  37         uint8_t                       Revision;
  38         uint8_t                       Reserved[3];
  39         ///
  40         /// Pointer to the non-volatile storage (NVS) data buffer.
  41         /// If it is NULL it indicates the NVS data is not available.
  42         ///
  43         void                        *NvsBufferPtr;
  44         ///
  45         /// Pointer to the temporary stack base address to be
  46         /// consumed inside FspMemoryInit() API.
  47         ///
  48         void                        *StackBase;
  49         ///
  50         /// Temporary stack size to be consumed inside
  51         /// FspMemoryInit() API.
  52         ///
  53         uint32_t                      StackSize;
  54         ///
  55         /// Size of memory to be reserved by FSP below "top
  56         /// of low usable memory" for bootloader usage.
  57         ///
  58         uint32_t                      BootLoaderTolumSize;
  59         ///
  60         /// Current boot mode.
  61         ///
  62         uint32_t                      BootMode;
  63         uint8_t                       Reserved1[8];
  64 } __packed;
  65
  66 #endif /* _FSP2_0_UPD_H_ */