CorebootModulePkg/SecCore/Ia32/SecEntry.S

   1 #------------------------------------------------------------------------------
   2 #
   3 # Copyright (c) 2013, Intel Corporation. All rights reserved.<BR>
   4 # This program and the accompanying materials
   5 # are licensed and made available under the terms and conditions of the BSD License
   6 # which accompanies this distribution.  The full text of the license may be found at
   7 # http://opensource.org/licenses/bsd-license.php.
   8 #
   9 # THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  10 # WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  11 #
  12 # Module Name:
  13 #
  14 #  SecEntry.S
  15 #
  16 # Abstract:
  17 #
  18 #  This is the code that begins in protected mode.
  19 #   It will transfer the control to pei core.
  20 #
  21 #------------------------------------------------------------------------------
  22
  23 ASM_GLOBAL  ASM_PFX(SecStartup)
  24
  25 # Pcds
  26 ASM_GLOBAL  ASM_PFX(PcdGet32 (PcdPayloadFdMemBase))
  27
  28 #
  29 # SecCore Entry Point
  30 #
  31 # Processor is in flat protected mode
  32 #
  33 # @param[in]  EAX   Initial value of the EAX register (BIST: Built-in Self Test)
  34 # @param[in]  DI    'BP': boot-strap processor, or 'AP': application processor
  35 # @param[in]  EBP   Pointer to the start of the Boot Firmware Volume
  36 #
  37 # @return     None  This routine does not return
  38 #
  39 ASM_GLOBAL ASM_PFX(_ModuleEntryPoint)
  40 ASM_PFX(_ModuleEntryPoint):
  41   #
  42   # Disable all the interrupts
  43   #
  44   cli
  45
  46   #
  47   # Construct the temporary memory at 0x80000, length 0x10000
  48   #
  49   movl ($BASE_512KB + $SIZE_64KB), %esp
  50
  51   #
  52   # Pass BFV into the PEI Core
  53   #
  54   pushl ASM_PFX(PcdGet32 (PcdPayloadFdMemBase))
  55
  56   #
  57   # Pass stack base into the PEI Core
  58   #
  59   pushl $BASE_512KB
  60
  61   #
  62   # Pass stack size into the PEI Core
  63   #
  64   pushl $SIZE_64KB
  65
  66   #
  67   # Pass Control into the PEI Core
  68   #
  69   call SecStartup
  70
  71   #
  72   # Never return to here
  73   #
  74   jmp .