422e5d2f7f
Remove asm code used for payload entry. Use patchable PCD instead a fixed PCD PcdPayloadStackTop to avoid potential conflict. Based on the removal, use same HobLib regardless UNIVERSAL_PAYLOAD. Use same PlatformHookLib regardless UNIVERSAL_PAYLOAD. The original PlatformHookLib was removed and UniversalPayloadPlatformHookLib was rename to new PlatformHookLib. Cc: Ray Ni <ray.ni@intel.com> Cc: Maurice Ma <maurice.ma@intel.com> Cc: Benjamin You <benjamin.you@intel.com> Signed-off-by: Guo Dong <guo.dong@intel.com> Reviewed-by: Ray Ni <ray.ni@intel.com>
96 lines
2.9 KiB
C
96 lines
2.9 KiB
C
/** @file
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Platform Hook Library instance for UART device.
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Copyright (c) 2021, 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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#include <Base.h>
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#include <PiDxe.h>
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#include <UniversalPayload/SerialPortInfo.h>
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#include <Library/PlatformHookLib.h>
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#include <Library/PcdLib.h>
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#include <Library/HobLib.h>
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/** Library Constructor
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@retval RETURN_SUCCESS Success.
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**/
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EFI_STATUS
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EFIAPI
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PlatformHookSerialPortConstructor (
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VOID
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)
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{
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// Nothing to do here. This constructor is added to
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// enable the chain of constructor invocation for
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// dependent libraries.
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return RETURN_SUCCESS;
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}
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/**
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Performs platform specific initialization required for the CPU to access
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the hardware associated with a SerialPortLib instance. This function does
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not initialize the serial port hardware itself. Instead, it initializes
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hardware devices that are required for the CPU to access the serial port
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hardware. This function may be called more than once.
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@retval RETURN_SUCCESS The platform specific initialization succeeded.
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@retval RETURN_DEVICE_ERROR The platform specific initialization could not be completed.
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**/
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RETURN_STATUS
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EFIAPI
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PlatformHookSerialPortInitialize (
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VOID
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)
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{
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RETURN_STATUS Status;
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UNIVERSAL_PAYLOAD_SERIAL_PORT_INFO *SerialPortInfo;
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UINT8 *GuidHob;
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UNIVERSAL_PAYLOAD_GENERIC_HEADER *GenericHeader;
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GuidHob = GetFirstGuidHob (&gUniversalPayloadSerialPortInfoGuid);
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if (GuidHob == NULL) {
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return EFI_NOT_FOUND;
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}
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GenericHeader = (UNIVERSAL_PAYLOAD_GENERIC_HEADER *) GET_GUID_HOB_DATA (GuidHob);
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if ((sizeof (UNIVERSAL_PAYLOAD_GENERIC_HEADER) > GET_GUID_HOB_DATA_SIZE (GuidHob)) || (GenericHeader->Length > GET_GUID_HOB_DATA_SIZE (GuidHob))) {
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return EFI_NOT_FOUND;
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}
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if (GenericHeader->Revision == UNIVERSAL_PAYLOAD_SERIAL_PORT_INFO_REVISION) {
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SerialPortInfo = (UNIVERSAL_PAYLOAD_SERIAL_PORT_INFO *) GET_GUID_HOB_DATA (GuidHob);
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if (GenericHeader->Length < UNIVERSAL_PAYLOAD_SIZEOF_THROUGH_FIELD (UNIVERSAL_PAYLOAD_SERIAL_PORT_INFO, RegisterBase)) {
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//
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// Return if can't find the Serial Port Info Hob with enough length
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//
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return EFI_NOT_FOUND;
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}
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Status = PcdSetBoolS (PcdSerialUseMmio, SerialPortInfo->UseMmio);
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if (RETURN_ERROR (Status)) {
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return Status;
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}
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Status = PcdSet64S (PcdSerialRegisterBase, SerialPortInfo->RegisterBase);
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if (RETURN_ERROR (Status)) {
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return Status;
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}
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Status = PcdSet32S (PcdSerialRegisterStride, SerialPortInfo->RegisterStride);
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if (RETURN_ERROR (Status)) {
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return Status;
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}
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Status = PcdSet32S (PcdSerialBaudRate, SerialPortInfo->BaudRate);
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if (RETURN_ERROR (Status)) {
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return Status;
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}
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return RETURN_SUCCESS;
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}
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return EFI_NOT_FOUND;
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}
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