audk/OvmfPkg/ResetVector/JumpToSec.asm

64 lines
1.4 KiB
NASM

;------------------------------------------------------------------------------
;
; Copyright (c) 2008, Intel Corporation
; All rights reserved. This program and the accompanying materials
; are licensed and made available under the terms and conditions of the BSD License
; which accompanies this distribution. The full text of the license may be found at
; http://opensource.org/licenses/bsd-license.php
;
; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
;
; Module Name:
;
; JumpToSec.asm
;
; Abstract:
;
; Jump from the reset vector binary to SEC
;
;------------------------------------------------------------------------------
BITS 32
TransitionFrom16RealTo32FlatComplete:
OneTimeCall Flat32SearchForBfvBase
OneTimeCall Flat32SearchForSecAndPeiEntries
;
; ESI - SEC Core entry point
; EDI - PEI Core entry point
; EBP - Start of BFV
;
; Jump to SEC Core entry point
;
%ifdef ARCH_IA32
jmp esi
%else
OneTimeCall Transition32FlatTo64Flat
BITS 64
mov rax, 0x00000000ffffffff
and rsi, rax
and rdi, rax
and rbp, rax
;
; RSI - SEC Core entry point
; RDI - PEI Core entry point
; RBP - Start of BFV
;
; Jump to SEC Core entry point
;
jmp rsi
%endif