/** @file
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Aspire VN7-572G Board Initialization DXE library
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Copyright (c) 2021, Baruch Binyamin Doron
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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 <PiDxe.h>
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#include <Library/UefiRuntimeServicesTableLib.h>
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#include <Library/BoardInitLib.h>
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#include <Library/DebugLib.h>
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#include <Library/EcLib.h>
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#include <Library/BoardEcLib.h>
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/**
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Update the EC's clock?
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**/
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VOID
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EcSendTime (
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VOID
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)
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{
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EFI_STATUS Status;
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EFI_TIME EfiTime;
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// Time could be negative (before 2016)
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INTN EcTime;
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UINT8 EcTimeByte;
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INTN Index;
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UINT8 EcResponse;
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Status = gRT->GetTime (&EfiTime, NULL);
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if (EFI_ERROR (Status)) {
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DEBUG ((DEBUG_INFO, "Failed to retrieve current time\n"));
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return;
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}
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// Time since year of release. Note that "century" is ignored.
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EcTime = ((EfiTime.Year << 26) + (EfiTime.Month << 22) + (EfiTime.Day << 17)
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+ (EfiTime.Hour << 12) + (EfiTime.Minute << 6) + (EfiTime.Second)
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/* 16 years */
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- 0x40000000);
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DEBUG ((DEBUG_INFO, "EC: reporting present time 0x%x\n", EcTime));
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SendEcCommand (0xE0);
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for (Index = 0; Index < 4; Index++) {
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// Shift bytes
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EcTimeByte = (UINT8) (EcTime >> (Index * 8));
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DEBUG ((DEBUG_INFO, "EC: Sending 0x%x (iteration %d)\n", EcTimeByte, Index));
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SendEcData (EcTimeByte);
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}
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Status = ReceiveEcData (&EcResponse);
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if (!EFI_ERROR (Status)) {
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DEBUG ((DEBUG_INFO, "EC: response 0x%x\n", EcResponse));
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}
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}
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/**
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Configure EC
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**/
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VOID
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EcRequestsTime (
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VOID
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)
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{
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UINT8 Dat;
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/* This is executed as protocol notify in vendor's RtKbcDriver when *CommonService
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* protocol is installed. Effectively, this code could execute from the entrypoint */
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EcCmd90Read (0x79, &Dat);
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if (Dat & BIT0) {
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EcSendTime ();
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}
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}
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/**
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A hook for board-specific initialization after PCI enumeration.
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@retval EFI_SUCCESS The board initialization was successful.
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@retval EFI_NOT_READY The board has not been detected yet.
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**/
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EFI_STATUS
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EFIAPI
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BoardInitAfterPciEnumeration (
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VOID
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)
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{
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EcRequestsTime ();
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return EFI_SUCCESS;
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}
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/**
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A hook for board-specific functionality for the ReadyToBoot event.
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@retval EFI_SUCCESS The board initialization was successful.
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@retval EFI_NOT_READY The board has not been detected yet.
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**/
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EFI_STATUS
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EFIAPI
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BoardInitReadyToBoot (
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VOID
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)
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{
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return EFI_SUCCESS;
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}
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/**
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A hook for board-specific functionality for the ExitBootServices event.
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@retval EFI_SUCCESS The board initialization was successful.
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@retval EFI_NOT_READY The board has not been detected yet.
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**/
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EFI_STATUS
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EFIAPI
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BoardInitEndOfFirmware (
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VOID
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)
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{
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return EFI_SUCCESS;
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}
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