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/** @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
);
/**
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
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