IntelFsp2Pkg/FspSecCore/Ia32/FspHelper.nasm

   1 ;; @file
   2 ;  Provide FSP helper function.
   3 ;
   4 ; Copyright (c) 2015 - 2016, Intel Corporation. All rights reserved.<BR>
   5 ; This program and the accompanying materials
   6 ; are licensed and made available under the terms and conditions of the BSD License
   7 ; which accompanies this distribution.  The full text of the license may be found at
   8 ; http://opensource.org/licenses/bsd-license.php.
   9 ;
  10 ; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  11 ; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  12 ;;
  13
  14     SECTION .text
  15
  16 global ASM_PFX(FspInfoHeaderRelativeOff)
  17 ASM_PFX(FspInfoHeaderRelativeOff):
  18    ;
  19    ; This value will be pached by the build script
  20    ;
  21    DD    0x12345678
  22
  23 global ASM_PFX(AsmGetFspBaseAddress)
  24 ASM_PFX(AsmGetFspBaseAddress):
  25    mov   eax, ASM_PFX(AsmGetFspInfoHeader)
  26    sub   eax, dword [ASM_PFX(FspInfoHeaderRelativeOff)]
  27    add   eax, 0x1C
  28    mov   eax, dword [eax]
  29    ret
  30
  31 global ASM_PFX(AsmGetFspInfoHeader)
  32 ASM_PFX(AsmGetFspInfoHeader):
  33    mov   eax, ASM_PFX(AsmGetFspInfoHeader)
  34    sub   eax, dword [ASM_PFX(FspInfoHeaderRelativeOff)]
  35    ret