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BdsPlatform: generate SMM events to put eMMC/SD in proper mode

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For Baytrail devices, coreboot leaves the eMMC/SD in PCI mode to enable
detection by Tianocore, so put into ACPI mode before OS boots.
Fixes booting on Baytrail devices.

Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
This commit is contained in:
Matt DeVillier
2017-01-03 21:29:13 -06:00
parent 64f7b0fdba
commit 4f60b6a439
2 changed files with 6 additions and 0 deletions
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5
CorebootModulePkg/Library/CorebootBdsLib/BdsPlatform.c
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@ -1265,6 +1265,11 @@ Returns:
Status = gBS->SetTimer (UserInputDurationTime, TimerRelative, 20000000); Status = gBS->SetTimer (UserInputDurationTime, TimerRelative, 20000000);
ASSERT (Status == EFI_SUCCESS); ASSERT (Status == EFI_SUCCESS);
//
// invoke SMM handler to put eMMC/SD devices into ACPI mode for OS
//
IoWrite8(0xb2, 0xcd);
// //
// To give the User a chance to enter Setup here, if user set TimeOut is 0. // To give the User a chance to enter Setup here, if user set TimeOut is 0.
// BDS should still give user a chance to enter Setup // BDS should still give user a chance to enter Setup

1
CorebootModulePkg/Library/CorebootBdsLib/BdsPlatform.h
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@ -42,6 +42,7 @@ Abstract:
#include <Library/UefiLib.h> #include <Library/UefiLib.h>
#include <Library/DxeServicesTableLib.h> #include <Library/DxeServicesTableLib.h>
#include <Library/DevicePathLib.h> #include <Library/DevicePathLib.h>
#include <Library/IoLib.h>
#include <Protocol/PciIo.h> #include <Protocol/PciIo.h>