mirror of https://github.com/acidanthera/audk.git
79 lines
1.7 KiB
NASM
79 lines
1.7 KiB
NASM
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;------------------------------------------------------------------------------
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;
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; Copyright (c) 2015 - 2016, Intel Corporation. All rights reserved.<BR>
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; SPDX-License-Identifier: BSD-2-Clause-Patent
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;
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; Abstract:
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;
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; Entry point for the coreboot UEFI payload.
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;
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;------------------------------------------------------------------------------
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SECTION .text
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; C Functions
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extern ASM_PFX(SecStartup)
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; Pcds
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extern ASM_PFX(PcdGet32 (PcdPayloadFdMemBase))
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extern ASM_PFX(PcdGet32 (PcdPayloadStackTop))
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;
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; SecCore Entry Point
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;
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; Processor is in flat protected mode
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;
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; @param[in] EAX Initial value of the EAX register (BIST: Built-in Self Test)
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; @param[in] DI 'BP': boot-strap processor, or 'AP': application processor
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; @param[in] EBP Pointer to the start of the Boot Firmware Volume
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;
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; @return None This routine does not return
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;
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global ASM_PFX(_ModuleEntryPoint)
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ASM_PFX(_ModuleEntryPoint):
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;
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; Disable all the interrupts
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;
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cli
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;
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; Save the Payload HOB base address before switching the stack
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;
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mov eax, [esp + 4]
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;
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; Construct the temporary memory at 0x80000, length 0x10000
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;
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mov esp, DWORD [ASM_PFX(PcdGet32 (PcdPayloadStackTop))]
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;
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; Push the Payload HOB base address onto new stack
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;
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push eax
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;
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; Pass BFV into the PEI Core
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;
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push DWORD [ASM_PFX(PcdGet32 (PcdPayloadFdMemBase))]
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;
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; Pass stack base into the PEI Core
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;
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push BASE_512KB
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;
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; Pass stack size into the PEI Core
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;
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push SIZE_64KB
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;
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; Pass Control into the PEI Core
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;
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call ASM_PFX(SecStartup)
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;
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; Should never return
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;
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jmp $
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