;------------------------------------------------------------------------------ | |
; | |
; Copyright (c) 2016, Intel Corporation. All rights reserved.<BR> | |
; SPDX-License-Identifier: BSD-2-Clause-Patent | |
; | |
; Module Name: | |
; | |
; PeiCoreEntry.nasm | |
; | |
; Abstract: | |
; | |
; Find and call SecStartup | |
; | |
;------------------------------------------------------------------------------ | |
SECTION .text | |
extern ASM_PFX(SecStartup) | |
extern ASM_PFX(PlatformInit) | |
global ASM_PFX(CallPeiCoreEntryPoint) | |
ASM_PFX(CallPeiCoreEntryPoint): | |
; | |
; 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+0xC] | |
; | |
; Platform init | |
; | |
pushad | |
push edx | |
push ecx | |
push eax | |
call ASM_PFX(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, 0xFF | |
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, 0xFFFFFFE0 | |
push DWORD [edi] | |
; | |
; Pass BFV into the PEI Core | |
; | |
mov edi, 0xFFFFFFFC | |
push DWORD [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 ASM_PFX(SecStartup) | |