cf1d454983
Add FSP2.0 support. This series of patch is to support FSP2.0 specification at https://firmware.intel.com/sites/default/files/FSP_EAS_v2.0_Draft%20External.pdf Some major updates include: 1) One FSP binary is separated to multiple components: FSP-T, FSP-M, FSP-S, and optional FSP-O. Each component has its own configuration data region. 2) All FSP-APIs use same UPD format - FSP_UPD_HEADER. 3) Add EnumInitPhaseEndOfFirmware notifyphase. 4) FSP1.1/FSP1.0 compatibility is NOT maintained. 5) We also add rename Fsp* to FspWrapper* in IntelFsp2WrapperPkg, to indicate that it is for FspWrapper only. IntelFspPkg and IntelFspWrapperPkg will be deprecated. The new Intel platform will follow FSP2.0 and use IntelFsp2Pkg and IntelFsp2WrapperPkg. The old platform can still use IntelFspPkg and IntelFspWrapperPkg for compatibility consideration. Cc: Giri P Mudusuru <giri.p.mudusuru@intel.com> Cc: Maurice Ma <maurice.ma@intel.com> Cc: Ravi P Rangarajan <ravi.p.rangarajan@intel.com> Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Jiewen Yao <jiewen.yao@intel.com> Reviewed-by: Giri P Mudusuru <giri.p.mudusuru@intel.com> Reviewed-by: Maurice Ma <maurice.ma@intel.com> Reviewed-by: Ravi P Rangarajan <ravi.p.rangarajan@intel.com>
78 lines
2.4 KiB
ArmAsm
78 lines
2.4 KiB
ArmAsm
#------------------------------------------------------------------------------
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#
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# Copyright (c) 2014, Intel Corporation. All rights reserved.<BR>
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# This program and the accompanying materials
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# are licensed and made available under the terms and conditions of the BSD License
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# which accompanies this distribution. The full text of the license may be found at
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# http://opensource.org/licenses/bsd-license.php.
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#
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# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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#
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# Abstract:
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#
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# Switch the stack from temporary memory to permenent memory.
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#
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#------------------------------------------------------------------------------
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#------------------------------------------------------------------------------
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# VOID
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# EFIAPI
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# SecSwitchStack (
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# UINT32 TemporaryMemoryBase,
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# UINT32 PermanentMemoryBase
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# )#
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#------------------------------------------------------------------------------
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ASM_GLOBAL ASM_PFX (SecSwitchStack)
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ASM_PFX(SecSwitchStack):
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#
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# Save standard registers so they can be used to change stack
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#
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pushl %eax
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pushl %ebx
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pushl %ecx
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pushl %edx
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#
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# !!CAUTION!! this function address's is pushed into stack after
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# migration of whole temporary memory, so need save it to permanent
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# memory at first!
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#
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movl 20(%esp), %ebx # Save the first parameter
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movl 24(%esp), %ecx # Save the second parameter
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#
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# Save this function's return address into permanent memory at first.
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# Then, Fixup the esp point to permanent memory
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#
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movl %esp, %eax
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subl %ebx, %eax
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addl %ecx, %eax
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movl 0(%esp), %edx # copy pushed register's value to permanent memory
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movl %edx, 0(%eax)
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movl 4(%esp), %edx
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movl %edx, 4(%eax)
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movl 8(%esp), %edx
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movl %edx, 8(%eax)
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movl 12(%esp), %edx
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movl %edx, 12(%eax)
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movl 16(%esp), %edx # Update this function's return address into permanent memory
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movl %edx, 16(%eax)
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movl %eax, %esp # From now, esp is pointed to permanent memory
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#
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# Fixup the ebp point to permanent memory
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#
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movl %ebp, %eax
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subl %ebx, %eax
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addl %ecx, %eax
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movl %eax, %ebp # From now, ebp is pointed to permanent memory
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popl %edx
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popl %ecx
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popl %ebx
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popl %eax
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ret
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