| ;; @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 | |
| ret | |
| global ASM_PFX(AsmGetFspInfoHeaderNoStack) | |
| ASM_PFX(AsmGetFspInfoHeaderNoStack): | |
| lea rax, [ASM_PFX(AsmGetFspInfoHeader)] | |
| lea rcx, [ASM_PFX(FspInfoHeaderRelativeOff)] | |
| mov ecx, [rcx] | |
| sub rax, rcx | |
| jmp rdi |