;------------------------------------------------------------------------------ | |
; | |
; Copyright (c) 2014, Intel Corporation. All rights reserved.<BR> | |
; 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: | |
; | |
; SecEntry.asm | |
; | |
; Abstract: | |
; | |
; This is the code that goes from real-mode to protected mode. | |
; It consumes the reset vector, calls two basic APIs from FSP binary. | |
; | |
;------------------------------------------------------------------------------ | |
.686p | |
.xmm | |
.model flat, c | |
.code | |
EXTRN SecStartup:NEAR | |
EXTRN PlatformInit:NEAR | |
CallPeiCoreEntryPoint PROC PUBLIC | |
; | |
; Obtain the hob list pointer | |
; | |
mov eax, [esp+4] | |
; | |
; Obtain the stack information | |
; ECX: start of range | |
; EDX: end of range | |
; | |
mov ecx, [esp+8] | |
mov edx, [esp+0Ch] | |
; | |
; Platform init | |
; | |
pushad | |
push edx | |
push ecx | |
push eax | |
call PlatformInit | |
pop eax | |
pop eax | |
pop eax | |
popad | |
; | |
; Set stack top pointer | |
; | |
mov esp, edx | |
; | |
; Push the hob list pointer | |
; | |
push eax | |
; | |
; Save the value | |
; ECX: start of range | |
; EDX: end of range | |
; | |
mov ebp, esp | |
push ecx | |
push edx | |
; | |
; Push processor count to stack first, then BIST status (AP then BSP) | |
; | |
mov eax, 1 | |
cpuid | |
shr ebx, 16 | |
and ebx, 0000000FFh | |
cmp bl, 1 | |
jae PushProcessorCount | |
; | |
; Some processors report 0 logical processors. Effectively 0 = 1. | |
; So we fix up the processor count | |
; | |
inc ebx | |
PushProcessorCount: | |
push ebx | |
; | |
; We need to implement a long-term solution for BIST capture. For now, we just copy BSP BIST | |
; for all processor threads | |
; | |
xor ecx, ecx | |
mov cl, bl | |
PushBist: | |
movd eax, mm0 | |
push eax | |
loop PushBist | |
; Save Time-Stamp Counter | |
movd eax, mm5 | |
push eax | |
movd eax, mm6 | |
push eax | |
; | |
; Pass entry point of the PEI core | |
; | |
mov edi, 0FFFFFFE0h | |
push DWORD PTR ds:[edi] | |
; | |
; Pass BFV into the PEI Core | |
; | |
mov edi, 0FFFFFFFCh | |
push DWORD PTR ds:[edi] | |
; | |
; Pass stack size into the PEI Core | |
; | |
mov ecx, [ebp - 4] | |
mov edx, [ebp - 8] | |
push ecx ; RamBase | |
sub edx, ecx | |
push edx ; RamSize | |
; | |
; Pass Control into the PEI Core | |
; | |
call SecStartup | |
CallPeiCoreEntryPoint ENDP | |
END |