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/** @file
This driver will report some MMIO/IO resources to dxe core, extract smbios and acpi
tables from coreboot and install.
Copyright (c) 2014, Intel Corporation. All rights reserved.<BR>
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.
**/
#include "CbSupportDxe.h"
UINTN mPmCtrlReg = 0;
/**
Reserve MMIO/IO resource in GCD
@param IsMMIO Flag of whether it is mmio resource or io resource.
@param GcdType Type of the space.
@param BaseAddress Base address of the space.
@param Length Length of the space.
@param Alignment Align with 2^Alignment
@param ImageHandle Handle for the image of this driver.
@retval EFI_SUCCESS Reserve successful
**/
EFI_STATUS
CbReserveResourceInGcd (
IN BOOLEAN IsMMIO,
IN UINTN GcdType,
IN EFI_PHYSICAL_ADDRESS BaseAddress,
IN UINT64 Length,
IN UINTN Alignment,
IN EFI_HANDLE ImageHandle
)
{
EFI_STATUS Status;
if (IsMMIO) {
Status = gDS->AddMemorySpace (
GcdType,
BaseAddress,
Length,
EFI_MEMORY_UC
);
if (EFI_ERROR (Status)) {
DEBUG ((
EFI_D_ERROR,
"Failed to add memory space :0x%x 0x%x\n",
BaseAddress,
Length
));
}
ASSERT_EFI_ERROR (Status);
Status = gDS->AllocateMemorySpace (
EfiGcdAllocateAddress,
GcdType,
Alignment,
Length,
&BaseAddress,
ImageHandle,
NULL
);
ASSERT_EFI_ERROR (Status);
} else {
Status = gDS->AddIoSpace (
GcdType,
BaseAddress,
Length
);
ASSERT_EFI_ERROR (Status);
Status = gDS->AllocateIoSpace (
EfiGcdAllocateAddress,
GcdType,
Alignment,
Length,
&BaseAddress,
ImageHandle,
NULL
);
ASSERT_EFI_ERROR (Status);
}
return Status;
}
/**
Notification function of EVT_GROUP_READY_TO_BOOT event group.
This is a notification function registered on EVT_GROUP_READY_TO_BOOT event group.
When the Boot Manager is about to load and execute a boot option, it reclaims variable
storage if free size is below the threshold.
@param Event Event whose notification function is being invoked.
@param Context Pointer to the notification function's context.
**/
VOID
OnReadyToBoot (
EFI_EVENT Event,
VOID *Context
)
{
//
// Enable SCI
//
IoOr16 (mPmCtrlReg, BIT0);
DEBUG ((EFI_D_ERROR, "Enable SCI bit at 0x%x before boot\n", mPmCtrlReg));
}
/**
Main entry for the Coreboot Support DXE module.
@param[in] ImageHandle The firmware allocated handle for the EFI image.
@param[in] SystemTable A pointer to the EFI System Table.
@retval EFI_SUCCESS The entry point is executed successfully.
@retval other Some error occurs when executing this entry point.
**/
EFI_STATUS
CbDxeEntryPoint (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
{
EFI_STATUS Status;
EFI_EVENT ReadyToBootEvent;
EFI_HOB_GUID_TYPE *GuidHob;
SYSTEM_TABLE_INFO *pSystemTableInfo;
ACPI_BOARD_INFO *pAcpiBoardInfo;
Status = EFI_SUCCESS;
//
// Report MMIO/IO Resources
//
Status = CbReserveResourceInGcd (TRUE, EfiGcdMemoryTypeMemoryMappedIo, 0xFEE00000, SIZE_1MB, 0, SystemTable); // LAPIC
ASSERT_EFI_ERROR (Status);
Status = CbReserveResourceInGcd (TRUE, EfiGcdMemoryTypeMemoryMappedIo, 0xFEC00000, SIZE_4KB, 0, SystemTable); // IOAPIC
ASSERT_EFI_ERROR (Status);
Status = CbReserveResourceInGcd (TRUE, EfiGcdMemoryTypeMemoryMappedIo, 0xFED00000, SIZE_1KB, 0, SystemTable); // HPET
ASSERT_EFI_ERROR (Status);
//
// Find the system table information guid hob
//
GuidHob = GetFirstGuidHob (&gUefiSystemTableInfoGuid);
ASSERT (GuidHob != NULL);
pSystemTableInfo = (SYSTEM_TABLE_INFO *)GET_GUID_HOB_DATA (GuidHob);
//
// Install Acpi Table
//
if (pSystemTableInfo->AcpiTableBase != 0 && pSystemTableInfo->AcpiTableSize != 0) {
DEBUG ((EFI_D_ERROR, "Install Acpi Table at 0x%x, length 0x%x\n", (UINTN)pSystemTableInfo->AcpiTableBase, pSystemTableInfo->AcpiTableSize));
Status = gBS->InstallConfigurationTable (&gEfiAcpiTableGuid, (VOID *)(UINTN)pSystemTableInfo->AcpiTableBase);
ASSERT_EFI_ERROR (Status);
}
//
// Install Smbios Table
//
if (pSystemTableInfo->SmbiosTableBase != 0 && pSystemTableInfo->SmbiosTableSize != 0) {
DEBUG ((EFI_D_ERROR, "Install Smbios Table at 0x%x, length 0x%x\n", (UINTN)pSystemTableInfo->SmbiosTableBase, pSystemTableInfo->SmbiosTableSize));
Status = gBS->InstallConfigurationTable (&gEfiSmbiosTableGuid, (VOID *)(UINTN)pSystemTableInfo->SmbiosTableBase);
ASSERT_EFI_ERROR (Status);
}
//
// Find the acpi board information guid hob
//
GuidHob = GetFirstGuidHob (&gUefiAcpiBoardInfoGuid);
ASSERT (GuidHob != NULL);
pAcpiBoardInfo = (ACPI_BOARD_INFO *)GET_GUID_HOB_DATA (GuidHob);
mPmCtrlReg = (UINTN)pAcpiBoardInfo->PmCtrlRegBase;
DEBUG ((EFI_D_ERROR, "PmCtrlReg at 0x%x\n", mPmCtrlReg));
//
// Register callback on the ready to boot event
// in order to enable SCI
//
ReadyToBootEvent = NULL;
Status = EfiCreateEventReadyToBootEx (
TPL_CALLBACK,
OnReadyToBoot,
NULL,
&ReadyToBootEvent
);
ASSERT_EFI_ERROR (Status);
return EFI_SUCCESS;
}
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