tyler.durden
/
audk
mirror of https://github.com/acidanthera/audk.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity
audk/IntelFsp2Pkg/FspSecCore/Ia32/ReadEsp.nasm

23 lines
565 B
NASM
Raw Normal View History

IntelFsp2Pkg: FSP can utilize bootloader stack REF: https://bugzilla.tianocore.org/show_bug.cgi?id=1485 Current FSP utilizes pre-allocated temporary memory from boot loader for both heap and stack. To reduce overall temporary memory usage FSP may share the same stack with boot loader and only needs a smaller memory for heap, no separate memory required for stack. Setting PcdFspHeapSizePercentage to 0 to enable FSP sharing stack with boot loader, in this case boot loader stack has to be large enough for FSP to use. Default is 50 (half memory heap and half memory stack) for backward compatible with original model. Test: Verified on internal platform and booting successfully with both modes. Cc: Nate DeSimone <nathaniel.l.desimone@intel.com> Cc: Star Zeng <star.zeng@intel.com> Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Chasel Chiu <chasel.chiu@intel.com> Reviewed-by: Star Zeng <star.zeng@intel.com> Reviewed-by: Nate DeSimone <nathaniel.l.desimone@intel.com>
2019-01-23 09:12:38 +01:00
;; @file
; Provide read ESP function
;
; Copyright (c) 2019, Intel Corporation. All rights reserved.<BR>
IntelFsp2Pkg: Replace BSD License with BSD+Patent License https://bugzilla.tianocore.org/show_bug.cgi?id=1373 Replace BSD 2-Clause License with BSD+Patent License. This change is based on the following emails: https://lists.01.org/pipermail/edk2-devel/2019-February/036260.html https://lists.01.org/pipermail/edk2-devel/2018-October/030385.html RFCs with detailed process for the license change: V3: https://lists.01.org/pipermail/edk2-devel/2019-March/038116.html V2: https://lists.01.org/pipermail/edk2-devel/2019-March/037669.html V1: https://lists.01.org/pipermail/edk2-devel/2019-March/037500.html Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Michael D Kinney <michael.d.kinney@intel.com> Reviewed-by: Chasel Chiu <chasel.chiu@intel.com>
2019-04-04 01:04:04 +02:00
; SPDX-License-Identifier: BSD-2-Clause-Patent
IntelFsp2Pkg: FSP can utilize bootloader stack REF: https://bugzilla.tianocore.org/show_bug.cgi?id=1485 Current FSP utilizes pre-allocated temporary memory from boot loader for both heap and stack. To reduce overall temporary memory usage FSP may share the same stack with boot loader and only needs a smaller memory for heap, no separate memory required for stack. Setting PcdFspHeapSizePercentage to 0 to enable FSP sharing stack with boot loader, in this case boot loader stack has to be large enough for FSP to use. Default is 50 (half memory heap and half memory stack) for backward compatible with original model. Test: Verified on internal platform and booting successfully with both modes. Cc: Nate DeSimone <nathaniel.l.desimone@intel.com> Cc: Star Zeng <star.zeng@intel.com> Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Chasel Chiu <chasel.chiu@intel.com> Reviewed-by: Star Zeng <star.zeng@intel.com> Reviewed-by: Nate DeSimone <nathaniel.l.desimone@intel.com>
2019-01-23 09:12:38 +01:00
;;
;------------------------------------------------------------------------------
SECTION .text
;------------------------------------------------------------------------------
; UINT32
; EFIAPI
; AsmReadEsp (
; VOID
; );
;------------------------------------------------------------------------------
global ASM_PFX(AsmReadEsp)
ASM_PFX(AsmReadEsp):
mov eax, esp
ret