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;; @file
; Provide FSP helper function.
;
; Copyright (c) 2022, Intel Corporation. All rights reserved.<BR>
; SPDX-License-Identifier: BSD-2-Clause-Patent
;;
DEFAULT REL
SECTION .text
FSP_HEADER_IMGBASE_OFFSET EQU 1Ch
global ASM_PFX(AsmGetFspBaseAddress)
ASM_PFX(AsmGetFspBaseAddress):
call ASM_PFX(AsmGetFspInfoHeader)
add rax, FSP_HEADER_IMGBASE_OFFSET
mov eax, [rax]
ret
global ASM_PFX(AsmGetFspInfoHeader)
ASM_PFX(AsmGetFspInfoHeader):
lea rax, [ASM_PFX(AsmGetFspInfoHeader)]
DB 0x48, 0x2d ; sub rax, 0x????????
global ASM_PFX(FspInfoHeaderRelativeOff)
ASM_PFX(FspInfoHeaderRelativeOff):
DD 0x12345678 ; This value must be patched by the build script
and rax, 0xffffffff
ret
global ASM_PFX(AsmGetFspInfoHeaderNoStack)
ASM_PFX(AsmGetFspInfoHeaderNoStack):
lea rax, [ASM_PFX(AsmGetFspInfoHeader)]
lea rcx, [ASM_PFX(FspInfoHeaderRelativeOff)]
mov ecx, [rcx]
sub rax, rcx
and rax, 0xffffffff
jmp rdi
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