mirror of https://github.com/acidanthera/audk.git
109 lines
3.5 KiB
NASM
109 lines
3.5 KiB
NASM
;; @file
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; Provide FSP API entry points.
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;
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; Copyright (c) 2022, 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_RAX_OFFSET EQU 8 * 7 ; size of a general purpose register * rax 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 rax, 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 rax, 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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%include "PushPopRegsNasm.inc"
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global ASM_PFX(FspMultiPhaseSiInitApi)
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ASM_PFX(FspMultiPhaseSiInitApi):
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mov rax, 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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push rdx ; Push a QWORD data for stack alignment
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cmp rax, 6 ; FSP_API_INDEX.FspMultiPhaseSiInitApiIndex
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jnz NotMultiPhaseSiInitApi
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PUSHA_64
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mov rdx, rcx ; move ApiParam to rdx
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mov rcx, rax ; move ApiIdx to rcx
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sub rsp, 0x20 ; calling C function may need shadow space
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call ASM_PFX(FspMultiPhaseSiInitApiHandlerV2)
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add rsp, 0x20 ; restore shadow space
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mov qword [rsp + STACK_SAVED_RAX_OFFSET], rax
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POPA_64
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add rsp, 0x08
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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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