diff options
| author |   Angelos Mouzakitis <a.mouzakitis@virtualopensystems.com> | 2023-10-10 14:33:42 +0000 |
|---|---|---|
| committer | Angelos Mouzakitis <a.mouzakitis@virtualopensystems.com> | 2023-10-10 14:33:42 +0000 |
| commit | af1a266670d040d2f4083ff309d732d648afba2a (patch) | |
| tree | 2fc46203448ddcc6f81546d379abfaeb323575e9 /roms/edk2/IntelFsp2Pkg/FspSecCore/Ia32/FspHelper.nasm | |
| parent | e02cda008591317b1625707ff8e115a4841aa889 (diff) | |
Change-Id: Iaf8d18082d3991dec7c0ebbea540f092188eb4ec
Diffstat (limited to 'roms/edk2/IntelFsp2Pkg/FspSecCore/Ia32/FspHelper.nasm')
| -rw-r--r-- | roms/edk2/IntelFsp2Pkg/FspSecCore/Ia32/FspHelper.nasm | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/roms/edk2/IntelFsp2Pkg/FspSecCore/Ia32/FspHelper.nasm b/roms/edk2/IntelFsp2Pkg/FspSecCore/Ia32/FspHelper.nasm new file mode 100644 index 000000000..e3e194547 --- /dev/null +++ b/roms/edk2/IntelFsp2Pkg/FspSecCore/Ia32/FspHelper.nasm @@ -0,0 +1,35 @@ +;; @file
+; Provide FSP helper function.
+;
+; Copyright (c) 2015 - 2016, Intel Corporation. All rights reserved.<BR>
+; SPDX-License-Identifier: BSD-2-Clause-Patent
+;;
+
+ SECTION .text
+
+global ASM_PFX(FspInfoHeaderRelativeOff)
+ASM_PFX(FspInfoHeaderRelativeOff):
+ DD 0x12345678 ; This value must be patched by the build script
+
+global ASM_PFX(AsmGetFspBaseAddress)
+ASM_PFX(AsmGetFspBaseAddress):
+ call ASM_PFX(AsmGetFspInfoHeader)
+ add eax, 0x1C
+ mov eax, dword [eax]
+ ret
+
+global ASM_PFX(AsmGetFspInfoHeader)
+ASM_PFX(AsmGetFspInfoHeader):
+ call ASM_PFX(NextInstruction)
+ASM_PFX(NextInstruction):
+ pop eax
+ sub eax, ASM_PFX(NextInstruction)
+ add eax, ASM_PFX(AsmGetFspInfoHeader)
+ sub eax, dword [eax - ASM_PFX(AsmGetFspInfoHeader) + ASM_PFX(FspInfoHeaderRelativeOff)]
+ ret
+
+global ASM_PFX(AsmGetFspInfoHeaderNoStack)
+ASM_PFX(AsmGetFspInfoHeaderNoStack):
+ mov eax, ASM_PFX(AsmGetFspInfoHeader)
+ sub eax, dword [ASM_PFX(FspInfoHeaderRelativeOff)]
+ jmp edi
|