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/** @file
Copyright (c) 2018, Linaro, Ltd. All rights reserved.
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 <Uefi.h>
#include <Library/BaseLib.h>
#include <Library/BaseMemoryLib.h>
#include <Library/DebugLib.h>
#include <Library/DevicePathLib.h>
#include <Library/HiiLib.h>
#include <Library/UefiBootServicesTableLib.h>
#include <Library/UefiLib.h>
#include <Library/UefiRuntimeServicesTableLib.h>
#include <Protocol/LsConnector.h>
#include <Protocol/Mezzanine.h>
#include "LsConnectorDxe.h"
extern UINT8 LsConnectorHiiBin[];
extern UINT8 LsConnectorDxeStrings[];
typedef struct {
VENDOR_DEVICE_PATH VendorDevicePath;
EFI_DEVICE_PATH_PROTOCOL End;
} HII_VENDOR_DEVICE_PATH;
STATIC HII_VENDOR_DEVICE_PATH m96BoardsDxeVendorDevicePath = {
{
{
HARDWARE_DEVICE_PATH,
HW_VENDOR_DP,
{
(UINT8) (sizeof (VENDOR_DEVICE_PATH)),
(UINT8) ((sizeof (VENDOR_DEVICE_PATH)) >> 8)
}
},
NINETY_SIX_BOARDS_FORMSET_GUID
},
{
END_DEVICE_PATH_TYPE,
END_ENTIRE_DEVICE_PATH_SUBTYPE,
{
(UINT8) (END_DEVICE_PATH_LENGTH),
(UINT8) ((END_DEVICE_PATH_LENGTH) >> 8)
}
}
};
STATIC LS_CONNECTOR_PROTOCOL mLsConnector;
STATIC EFI_EVENT EndOfDxeEvent;
STATIC
EFI_STATUS
InstallHiiPages (
VOID
)
{
EFI_STATUS Status;
EFI_HII_HANDLE HiiHandle;
EFI_HANDLE DriverHandle;
DriverHandle = NULL;
Status = gBS->InstallMultipleProtocolInterfaces (&DriverHandle,
&gEfiDevicePathProtocolGuid,
&m96BoardsDxeVendorDevicePath,
NULL);
if (EFI_ERROR (Status)) {
return Status;
}
HiiHandle = HiiAddPackages (&g96BoardsFormsetGuid,
DriverHandle,
LsConnectorDxeStrings,
LsConnectorHiiBin,
NULL);
if (HiiHandle == NULL) {
gBS->UninstallMultipleProtocolInterfaces (DriverHandle,
&gEfiDevicePathProtocolGuid,
&m96BoardsDxeVendorDevicePath,
NULL);
return EFI_OUT_OF_RESOURCES;
}
return EFI_SUCCESS;
}
STATIC
VOID
EFIAPI
ApplyDeviceTreeOverlay (
EFI_EVENT Event,
VOID *Context
)
{
VOID *Dtb;
MEZZANINE_PROTOCOL *Mezzanine;
EFI_STATUS Status;
//
// Find the DTB in the configuration table array. If it isn't there, just
// bail without an error: we may be running on an ACPI platform even if
// this driver does not support it [yet].
//
Status = EfiGetSystemConfigurationTable (&gFdtTableGuid, &Dtb);
if (Status == EFI_NOT_FOUND) {
return;
}
ASSERT_EFI_ERROR (Status);
Status = gBS->LocateProtocol (&g96BoardsMezzanineProtocolGuid, NULL,
(VOID **)&Mezzanine);
if (EFI_ERROR (Status)) {
DEBUG ((DEBUG_INFO, "%a: no mezzanine driver active\n", __FUNCTION__));
return;
}
Status = Mezzanine->ApplyDeviceTreeOverlay (Mezzanine, Dtb);
if (EFI_ERROR (Status)) {
DEBUG ((DEBUG_WARN, "%a: failed to apply DT overlay - %r\n", __FUNCTION__,
Status));
}
}
/**
The entry point for 96BoardsDxe driver.
@param[in] ImageHandle The image handle of the driver.
@param[in] SystemTable The system table.
@retval EFI_ALREADY_STARTED The driver already exists in system.
@retval EFI_OUT_OF_RESOURCES Fail to execute entry point due to lack of
resources.
@retval EFI_SUCCES All the related protocols are installed on
the driver.
**/
EFI_STATUS
EFIAPI
EntryPoint (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
{
EFI_STATUS Status;
NINETY_SIX_BOARDS_CONFIG_DATA ConfigData;
UINTN BufferSize;
//
// Get the current config settings from the EFI variable.
//
BufferSize = sizeof (ConfigData);
Status = gRT->GetVariable (NINETY_SIX_BOARDS_CONFIG_VARIABLE_NAME,
&g96BoardsFormsetGuid, NULL, &BufferSize, &ConfigData);
if (EFI_ERROR (Status)) {
DEBUG ((DEBUG_INFO, "%a: no config data found\n", __FUNCTION__));
ConfigData.MezzanineType = MEZZANINE_NONE;
}
if (!EFI_ERROR (Status) &&
ConfigData.MezzanineType >= MEZZANINE_MAX) {
DEBUG ((DEBUG_WARN,
"%a: invalid value for %s, defaulting to MEZZANINE_NONE\n",
__FUNCTION__, NINETY_SIX_BOARDS_CONFIG_VARIABLE_NAME));
ConfigData.MezzanineType = MEZZANINE_NONE;
Status = EFI_INVALID_PARAMETER; // trigger setvar below
}
//
// Write the newly selected value back to the variable store.
//
if (EFI_ERROR (Status)) {
ZeroMem (&ConfigData.Reserved, sizeof (ConfigData.Reserved));
Status = gRT->SetVariable (NINETY_SIX_BOARDS_CONFIG_VARIABLE_NAME,
&g96BoardsFormsetGuid,
EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS,
sizeof (ConfigData), &ConfigData);
if (EFI_ERROR (Status)) {
DEBUG ((DEBUG_ERROR, "%a: gRT->SetVariable () failed - %r\n",
__FUNCTION__, Status));
return Status;
}
}
switch (ConfigData.MezzanineType) {
case MEZZANINE_SECURE96:
mLsConnector.MezzanineType = MezzanineSecure96;
break;
default:
mLsConnector.MezzanineType = MezzanineUnknown;
}
Status = gBS->InstallProtocolInterface (&ImageHandle,
&g96BoardsLsConnectorProtocolGuid,
EFI_NATIVE_INTERFACE,
&mLsConnector);
if (EFI_ERROR (Status)) {
return Status;
}
Status = gBS->CreateEventEx (
EVT_NOTIFY_SIGNAL,
TPL_NOTIFY,
ApplyDeviceTreeOverlay,
NULL,
&gEfiEndOfDxeEventGroupGuid,
&EndOfDxeEvent);
ASSERT_EFI_ERROR (Status);
return InstallHiiPages ();
}
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