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/FspApiEntryCommon.nasm | |
| parent | e02cda008591317b1625707ff8e115a4841aa889 (diff) | |
Change-Id: Iaf8d18082d3991dec7c0ebbea540f092188eb4ec
Diffstat (limited to 'roms/edk2/IntelFsp2Pkg/FspSecCore/Ia32/FspApiEntryCommon.nasm')
| -rw-r--r-- | roms/edk2/IntelFsp2Pkg/FspSecCore/Ia32/FspApiEntryCommon.nasm | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/roms/edk2/IntelFsp2Pkg/FspSecCore/Ia32/FspApiEntryCommon.nasm b/roms/edk2/IntelFsp2Pkg/FspSecCore/Ia32/FspApiEntryCommon.nasm new file mode 100644 index 000000000..26ae7d9fd --- /dev/null +++ b/roms/edk2/IntelFsp2Pkg/FspSecCore/Ia32/FspApiEntryCommon.nasm @@ -0,0 +1,73 @@ +;; @file
+; Provide FSP API entry points.
+;
+; Copyright (c) 2016 - 2020, Intel Corporation. All rights reserved.<BR>
+; SPDX-License-Identifier: BSD-2-Clause-Patent
+;;
+
+ SECTION .text
+
+;
+; Following functions will be provided in C
+;
+extern ASM_PFX(Loader2PeiSwitchStack)
+extern ASM_PFX(FspApiCallingCheck)
+
+;
+; Following functions will be provided in ASM
+;
+extern ASM_PFX(FspApiCommonContinue)
+extern ASM_PFX(AsmGetFspInfoHeader)
+
+;----------------------------------------------------------------------------
+; FspApiCommon API
+;
+; This is the FSP API common entry point to resume the FSP execution
+;
+;----------------------------------------------------------------------------
+global ASM_PFX(FspApiCommon)
+ASM_PFX(FspApiCommon):
+ ;
+ ; EAX holds the API index
+ ;
+
+ ;
+ ; Stack must be ready
+ ;
+ push eax
+ add esp, 4
+ cmp eax, dword [esp - 4]
+ jz FspApiCommon1
+ mov eax, 080000003h
+ jmp exit
+
+FspApiCommon1:
+ ;
+ ; Verify the calling condition
+ ;
+ pushad
+ push DWORD [esp + (4 * 8 + 4)] ; push ApiParam
+ push eax ; push ApiIdx
+ call ASM_PFX(FspApiCallingCheck)
+ add esp, 8
+ cmp eax, 0
+ jz FspApiCommon2
+ mov dword [esp + (4 * 7)], eax
+ popad
+exit:
+ ret
+
+FspApiCommon2:
+ popad
+ cmp eax, 3 ; FspMemoryInit API
+ jz FspApiCommon3
+
+ cmp eax, 6 ; FspMultiPhaseSiInitApiIndex API
+ jz FspApiCommon3
+
+ call ASM_PFX(AsmGetFspInfoHeader)
+ jmp ASM_PFX(Loader2PeiSwitchStack)
+
+FspApiCommon3:
+ jmp ASM_PFX(FspApiCommonContinue)
+
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