mirror of https://github.com/acidanthera/audk.git
102 lines
3.3 KiB
NASM
102 lines
3.3 KiB
NASM
;; @file
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; Provide FSP API entry points.
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;
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; Copyright (c) 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(FspApiCommon)
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extern ASM_PFX(FspMultiPhaseSiInitApiHandlerV2)
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STACK_SAVED_EAX_OFFSET EQU 4 * 7 ; size of a general purpose register * eax index
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;----------------------------------------------------------------------------
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; NotifyPhase API
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;
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; This FSP API will notify the FSP about the different phases in the boot
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; process
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;
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;----------------------------------------------------------------------------
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global ASM_PFX(NotifyPhaseApi)
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ASM_PFX(NotifyPhaseApi):
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mov eax, 2 ; FSP_API_INDEX.NotifyPhaseApiIndex
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jmp ASM_PFX(FspApiCommon)
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;----------------------------------------------------------------------------
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; FspSiliconInit API
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;
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; This FSP API initializes the CPU and the chipset including the IO
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; controllers in the chipset to enable normal operation of these devices.
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;
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;----------------------------------------------------------------------------
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global ASM_PFX(FspSiliconInitApi)
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ASM_PFX(FspSiliconInitApi):
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mov eax, 5 ; FSP_API_INDEX.FspSiliconInitApiIndex
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jmp ASM_PFX(FspApiCommon)
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;----------------------------------------------------------------------------
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; FspMultiPhaseSiInitApi API
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;
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; This FSP API provides multi-phase silicon initialization, which brings greater
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; modularity beyond the existing FspSiliconInit() API.
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; Increased modularity is achieved by adding an extra API to FSP-S.
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; This allows the bootloader to add board specific initialization steps throughout
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; the SiliconInit flow as needed.
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;
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;----------------------------------------------------------------------------
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global ASM_PFX(FspMultiPhaseSiInitApi)
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ASM_PFX(FspMultiPhaseSiInitApi):
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mov eax, 6 ; FSP_API_INDEX.FspMultiPhaseSiInitApiIndex
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jmp ASM_PFX(FspApiCommon)
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;----------------------------------------------------------------------------
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; FspApiCommonContinue 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(FspApiCommonContinue)
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ASM_PFX(FspApiCommonContinue):
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;
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; Handle FspMultiPhaseSiInitApiIndex API
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;
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cmp eax, 6 ; FspMultiPhaseSiInitApiIndex
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jnz NotMultiPhaseSiInitApi
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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(FspMultiPhaseSiInitApiHandlerV2)
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add esp, 8
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mov dword [esp + STACK_SAVED_EAX_OFFSET], eax
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popad
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ret
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NotMultiPhaseSiInitApi:
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jmp $
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ret
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;----------------------------------------------------------------------------
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; TempRamInit API
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;
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; Empty function for WHOLEARCHIVE build option
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;
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;----------------------------------------------------------------------------
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global ASM_PFX(TempRamInitApi)
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ASM_PFX(TempRamInitApi):
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jmp $
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ret
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;----------------------------------------------------------------------------
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; Module Entrypoint API
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;----------------------------------------------------------------------------
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global ASM_PFX(_ModuleEntryPoint)
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ASM_PFX(_ModuleEntryPoint):
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jmp $
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