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| ;------------------------------------------------------------------------------
| ;
| ; 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)
|
|
|