;------------------------------------------------------------------------------ ;* ;* Copyright (c) 2006 - 2013, 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. ;* ;* CpuAsm.asm ;* ;* Abstract: ;* ;------------------------------------------------------------------------------ #include DEFAULT REL SECTION .text extern ASM_PFX(SecCoreStartupWithStack) ; ; SecCore Entry Point ; ; Processor is in flat protected mode ; ; @param[in] RAX Initial value of the EAX register (BIST: Built-in Self Test) ; @param[in] DI 'BP': boot-strap processor, or 'AP': application processor ; @param[in] RBP Pointer to the start of the Boot Firmware Volume ; @param[in] DS Selector allowing flat access to all addresses ; @param[in] ES Selector allowing flat access to all addresses ; @param[in] FS Selector allowing flat access to all addresses ; @param[in] GS Selector allowing flat access to all addresses ; @param[in] SS Selector allowing flat access to all addresses ; ; @return None This routine does not return ; global ASM_PFX(_ModuleEntryPoint) ASM_PFX(_ModuleEntryPoint): ; ; Fill the temporary RAM with the initial stack value. ; The loop below will seed the heap as well, but that's harmless. ; mov rax, (FixedPcdGet32 (PcdInitValueInTempStack) << 32) | FixedPcdGet32 (PcdInitValueInTempStack) ; qword to store mov rdi, FixedPcdGet32 (PcdOvmfSecPeiTempRamBase) ; base address, ; relative to ; ES mov rcx, FixedPcdGet32 (PcdOvmfSecPeiTempRamSize) / 8 ; qword count cld ; store from base ; up rep stosq ; ; Load temporary RAM stack based on PCDs ; %define SEC_TOP_OF_STACK (FixedPcdGet32 (PcdOvmfSecPeiTempRamBase) + \ FixedPcdGet32 (PcdOvmfSecPeiTempRamSize)) mov rsp, SEC_TOP_OF_STACK nop ; ; Setup parameters and call SecCoreStartupWithStack ; rcx: BootFirmwareVolumePtr ; rdx: TopOfCurrentStack ; mov rcx, rbp mov rdx, rsp sub rsp, 0x20 call ASM_PFX(SecCoreStartupWithStack)