/** @file | |
Rewrite the BootOrder NvVar based on QEMU's "bootorder" fw_cfg file -- | |
include file. | |
Copyright (C) 2012-2014, Red Hat, Inc. | |
SPDX-License-Identifier: BSD-2-Clause-Patent | |
**/ | |
#ifndef __QEMU_BOOT_ORDER_LIB_H__ | |
#define __QEMU_BOOT_ORDER_LIB_H__ | |
#include <Uefi/UefiBaseType.h> | |
#include <Base.h> | |
/** | |
Connect devices based on the boot order retrieved from QEMU. | |
Attempt to retrieve the "bootorder" fw_cfg file from QEMU. Translate the | |
OpenFirmware device paths therein to UEFI device path fragments. Connect the | |
devices identified by the UEFI devpath prefixes as narrowly as possible, then | |
connect all their child devices, recursively. | |
If this function fails, then platform BDS should fall back to | |
EfiBootManagerConnectAll(), or some other method for connecting any expected | |
boot devices. | |
@retval RETURN_SUCCESS The "bootorder" fw_cfg file has been | |
parsed, and the referenced device-subtrees | |
have been connected. | |
@retval RETURN_UNSUPPORTED QEMU's fw_cfg is not supported. | |
@retval RETURN_NOT_FOUND Empty or nonexistent "bootorder" fw_cfg | |
file. | |
@retval RETURN_INVALID_PARAMETER Parse error in the "bootorder" fw_cfg file. | |
@retval RETURN_OUT_OF_RESOURCES Memory allocation failed. | |
@return Error statuses propagated from underlying | |
functions. | |
**/ | |
RETURN_STATUS | |
EFIAPI | |
ConnectDevicesFromQemu ( | |
VOID | |
); | |
/** | |
Write qemu boot order to uefi variables. | |
Attempt to retrieve the "bootorder" fw_cfg file from QEMU. Translate | |
the OpenFirmware device paths therein to UEFI device path fragments. | |
On Success store the device path in QemuBootOrderNNNN variables. | |
**/ | |
VOID | |
EFIAPI | |
StoreQemuBootOrder ( | |
VOID | |
); | |
/** | |
Set the boot order based on configuration retrieved from QEMU. | |
Attempt to retrieve the "bootorder" fw_cfg file from QEMU. Translate the | |
OpenFirmware device paths therein to UEFI device path fragments. Match the | |
translated fragments against the current list of boot options, and rewrite | |
the BootOrder NvVar so that it corresponds to the order described in fw_cfg. | |
Platform BDS should call this function after connecting any expected boot | |
devices and calling EfiBootManagerRefreshAllBootOption (). | |
@retval RETURN_SUCCESS BootOrder NvVar rewritten. | |
@retval RETURN_UNSUPPORTED QEMU's fw_cfg is not supported. | |
@retval RETURN_NOT_FOUND Empty or nonexistent "bootorder" fw_cfg | |
file, or no match found between the | |
"bootorder" fw_cfg file and BootOptionList. | |
@retval RETURN_INVALID_PARAMETER Parse error in the "bootorder" fw_cfg file. | |
@retval RETURN_OUT_OF_RESOURCES Memory allocation failed. | |
@return Values returned by gBS->LocateProtocol () | |
or gRT->SetVariable (). | |
**/ | |
RETURN_STATUS | |
EFIAPI | |
SetBootOrderFromQemu ( | |
VOID | |
); | |
/** | |
Calculate the number of seconds we should be showing the FrontPage progress | |
bar for. | |
@return The TimeoutDefault argument for PlatformBdsEnterFrontPage(). | |
**/ | |
UINT16 | |
EFIAPI | |
GetFrontPageTimeoutFromQemu ( | |
VOID | |
); | |
#endif |