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;; @file
; Provide FSP API entry points.
;
; Copyright (c) 2022, 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(FspApiCommon)
extern ASM_PFX(FspMultiPhaseSiInitApiHandler)
STACK_SAVED_RAX_OFFSET EQU 8 * 7 ; size of a general purpose register * rax index
;----------------------------------------------------------------------------
; NotifyPhase API
;
; This FSP API will notify the FSP about the different phases in the boot
; process
;
;----------------------------------------------------------------------------
global ASM_PFX(NotifyPhaseApi)
ASM_PFX(NotifyPhaseApi):
mov rax, 2 ; FSP_API_INDEX.NotifyPhaseApiIndex
jmp ASM_PFX(FspApiCommon)
;----------------------------------------------------------------------------
; FspSiliconInit API
;
; This FSP API initializes the CPU and the chipset including the IO
; controllers in the chipset to enable normal operation of these devices.
;
;----------------------------------------------------------------------------
global ASM_PFX(FspSiliconInitApi)
ASM_PFX(FspSiliconInitApi):
mov rax, 5 ; FSP_API_INDEX.FspSiliconInitApiIndex
jmp ASM_PFX(FspApiCommon)
;----------------------------------------------------------------------------
; FspMultiPhaseSiInitApi API
;
; This FSP API provides multi-phase silicon initialization, which brings greater
; modularity beyond the existing FspSiliconInit() API.
; Increased modularity is achieved by adding an extra API to FSP-S.
; This allows the bootloader to add board specific initialization steps throughout
; the SiliconInit flow as needed.
;
;----------------------------------------------------------------------------
%include "PushPopRegsNasm.inc"
global ASM_PFX(FspMultiPhaseSiInitApi)
ASM_PFX(FspMultiPhaseSiInitApi):
mov rax, 6 ; FSP_API_INDEX.FspMultiPhaseSiInitApiIndex
jmp ASM_PFX(FspApiCommon)
;----------------------------------------------------------------------------
; FspApiCommonContinue API
;
; This is the FSP API common entry point to resume the FSP execution
;
;----------------------------------------------------------------------------
global ASM_PFX(FspApiCommonContinue)
ASM_PFX(FspApiCommonContinue):
;
; Handle FspMultiPhaseSiInitApiIndex API
;
cmp rax, 6 ; FSP_API_INDEX.FspMultiPhaseSiInitApiIndex
jnz NotMultiPhaseSiInitApi
PUSHA_64
mov rdx, rcx ; move ApiParam to rdx
mov rcx, rax ; move ApiIdx to rcx
call ASM_PFX(FspMultiPhaseSiInitApiHandler)
mov qword [rsp + STACK_SAVED_RAX_OFFSET], rax
POPA_64
ret
NotMultiPhaseSiInitApi:
jmp $
ret
;----------------------------------------------------------------------------
; TempRamInit API
;
; Empty function for WHOLEARCHIVE build option
;
;----------------------------------------------------------------------------
global ASM_PFX(TempRamInitApi)
ASM_PFX(TempRamInitApi):
jmp $
ret
;----------------------------------------------------------------------------
; Module Entrypoint API
;----------------------------------------------------------------------------
global ASM_PFX(_ModuleEntryPoint)
ASM_PFX(_ModuleEntryPoint):
jmp $
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