;; @file
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; Provide FSP API entry points.
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;
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; Copyright (c) 2016 - 2020, Intel Corporation. All rights reserved.<BR>
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; SPDX-License-Identifier: BSD-2-Clause-Patent
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;;
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SECTION .text
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;
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; Following functions will be provided in C
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;
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extern ASM_PFX(Loader2PeiSwitchStack)
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extern ASM_PFX(FspApiCallingCheck)
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;
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; Following functions will be provided in ASM
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;
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extern ASM_PFX(FspApiCommonContinue)
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extern ASM_PFX(AsmGetFspInfoHeader)
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;----------------------------------------------------------------------------
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; FspApiCommon API
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;
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; This is the FSP API common entry point to resume the FSP execution
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;
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;----------------------------------------------------------------------------
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global ASM_PFX(FspApiCommon)
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ASM_PFX(FspApiCommon):
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;
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; EAX holds the API index
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;
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;
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; Stack must be ready
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;
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push eax
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add esp, 4
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cmp eax, dword [esp - 4]
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jz FspApiCommon1
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mov eax, 080000003h
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jmp exit
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FspApiCommon1:
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;
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; Verify the calling condition
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;
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pushad
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push DWORD [esp + (4 * 8 + 4)] ; push ApiParam
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push eax ; push ApiIdx
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call ASM_PFX(FspApiCallingCheck)
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add esp, 8
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cmp eax, 0
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jz FspApiCommon2
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mov dword [esp + (4 * 7)], eax
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popad
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exit:
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ret
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FspApiCommon2:
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popad
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cmp eax, 3 ; FspMemoryInit API
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jz FspApiCommon3
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cmp eax, 6 ; FspMultiPhaseSiInitApiIndex API
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jz FspApiCommon3
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call ASM_PFX(AsmGetFspInfoHeader)
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jmp ASM_PFX(Loader2PeiSwitchStack)
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FspApiCommon3:
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jmp ASM_PFX(FspApiCommonContinue)
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