3b17b24587
There are two FSP images at different locations in a flash (one factory version is read only and other in updatable version) TempRamInit, FspMemoryInit and TempRamExit are executed from factory version and FspSiliconInit/NotifyPhase will be executed from updatable version. Also update FSP specification version to v1.1. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: "Ma, Maurice" <maurice.ma@intel.com> Reviewed-by: "Yao, Jiewen" <Jiewen.Yao@intel.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@17248 6f19259b-4bc3-4df7-8a09-765794883524
78 lines
2.1 KiB
NASM
78 lines
2.1 KiB
NASM
;------------------------------------------------------------------------------
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;
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; Copyright (c) 2014 - 2015, 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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.586p
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.model flat,C
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.code
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;------------------------------------------------------------------------------
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; UINT32
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; EFIAPI
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; Pei2LoaderSwitchStack (
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; VOID
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; )
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;------------------------------------------------------------------------------
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EXTERNDEF C MeasurePoint:PROC
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Pei2LoaderSwitchStack PROC C PUBLIC
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xor eax, eax
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jmp FspSwitchStack
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Pei2LoaderSwitchStack ENDP
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;------------------------------------------------------------------------------
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; UINT32
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; EFIAPI
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; Loader2PeiSwitchStack (
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; VOID
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; )
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;------------------------------------------------------------------------------
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Loader2PeiSwitchStack PROC C PUBLIC
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jmp FspSwitchStack
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Loader2PeiSwitchStack ENDP
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;------------------------------------------------------------------------------
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; UINT32
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; EFIAPI
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; FspSwitchStack (
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; VOID
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; )
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;------------------------------------------------------------------------------
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EXTERNDEF C SwapStack:PROC
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FspSwitchStack PROC C PUBLIC
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; Save current contexts
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push eax
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pushfd
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cli
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pushad
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sub esp, 8
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sidt fword ptr [esp]
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; Load new stack
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push esp
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call SwapStack
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mov esp, eax
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; Restore previous contexts
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lidt fword ptr [esp]
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add esp, 8
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popad
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popfd
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add esp, 4
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ret
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FspSwitchStack ENDP
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END
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