2 ; Provide FSP API entry points.
4 ; Copyright (c) 2022, Intel Corporation. All rights reserved.<BR>
5 ; SPDX-License-Identifier: BSD-2-Clause-Patent
11 ; Following functions will be provided in C
13 extern ASM_PFX(FspApiCommon)
14 extern ASM_PFX(FspMultiPhaseSiInitApiHandler)
16 STACK_SAVED_RAX_OFFSET EQU 8 * 7 ; size of a general purpose register * rax index
18 ;----------------------------------------------------------------------------
21 ; This FSP API will notify the FSP about the different phases in the boot
24 ;----------------------------------------------------------------------------
25 global ASM_PFX(NotifyPhaseApi)
26 ASM_PFX(NotifyPhaseApi):
27 mov eax, 2 ; FSP_API_INDEX.NotifyPhaseApiIndex
28 jmp ASM_PFX(FspApiCommon)
30 ;----------------------------------------------------------------------------
33 ; This FSP API initializes the CPU and the chipset including the IO
34 ; controllers in the chipset to enable normal operation of these devices.
36 ;----------------------------------------------------------------------------
37 global ASM_PFX(FspSiliconInitApi)
38 ASM_PFX(FspSiliconInitApi):
39 mov eax, 5 ; FSP_API_INDEX.FspSiliconInitApiIndex
40 jmp ASM_PFX(FspApiCommon)
42 ;----------------------------------------------------------------------------
43 ; FspMultiPhaseSiInitApi API
45 ; This FSP API provides multi-phase silicon initialization, which brings greater
46 ; modularity beyond the existing FspSiliconInit() API.
47 ; Increased modularity is achieved by adding an extra API to FSP-S.
48 ; This allows the bootloader to add board specific initialization steps throughout
49 ; the SiliconInit flow as needed.
51 ;----------------------------------------------------------------------------
53 %include "PushPopRegsNasm.inc"
55 global ASM_PFX(FspMultiPhaseSiInitApi)
56 ASM_PFX(FspMultiPhaseSiInitApi):
57 mov eax, 6 ; FSP_API_INDEX.FspMultiPhaseSiInitApiIndex
58 jmp ASM_PFX(FspApiCommon)
60 ;----------------------------------------------------------------------------
61 ; FspApiCommonContinue API
63 ; This is the FSP API common entry point to resume the FSP execution
65 ;----------------------------------------------------------------------------
66 global ASM_PFX(FspApiCommonContinue)
67 ASM_PFX(FspApiCommonContinue):
69 ; Handle FspMultiPhaseSiInitApiIndex API
72 jnz NotMultiPhaseSiInitApi
75 mov rdx, rcx ; move ApiParam to rdx
76 mov rcx, rax ; move ApiIdx to rcx
77 call ASM_PFX(FspMultiPhaseSiInitApiHandler)
78 mov qword [rsp + STACK_SAVED_RAX_OFFSET], rax
82 NotMultiPhaseSiInitApi:
86 ;----------------------------------------------------------------------------
89 ; Empty function for WHOLEARCHIVE build option
91 ;----------------------------------------------------------------------------
92 global ASM_PFX(TempRamInitApi)
93 ASM_PFX(TempRamInitApi):
97 ;----------------------------------------------------------------------------
98 ; Module Entrypoint API
99 ;----------------------------------------------------------------------------
100 global ASM_PFX(_ModuleEntryPoint)
101 ASM_PFX(_ModuleEntryPoint):