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https://github.com/CloverHackyColor/CloverBootloader.git
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78 lines
1.9 KiB
C
78 lines
1.9 KiB
C
/** @file
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Try to load an EFI-stubbed RISC-V Linux kernel from QEMU's fw_cfg.
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This implementation differs from OvmfPkg/Library/LoadLinuxLib. An EFI
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stub in the subject kernel is a hard requirement here.
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Copyright (C) 2014-2016, Red Hat, Inc.
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#include <Library/QemuLoadImageLib.h>
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#include <Library/ReportStatusCodeLib.h>
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#include "PlatformBm.h"
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//
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// The entry point of the feature.
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//
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/**
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Download the kernel, the initial ramdisk, and the kernel command line from
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QEMU's fw_cfg. Construct a minimal SimpleFileSystem that contains the two
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image files, and load and start the kernel from it.
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The kernel will be instructed via its command line to load the initrd from
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the same Simple FileSystem.
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@retval EFI_NOT_FOUND Kernel image was not found.
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@retval EFI_OUT_OF_RESOURCES Memory allocation failed.
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@retval EFI_PROTOCOL_ERROR Unterminated kernel command line.
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@return Error codes from any of the underlying
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functions. On success, the function doesn't
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return.
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**/
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EFI_STATUS
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EFIAPI
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TryRunningQemuKernel (
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VOID
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)
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{
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EFI_STATUS Status;
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EFI_HANDLE KernelImageHandle;
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Status = QemuLoadKernelImage (&KernelImageHandle);
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if (EFI_ERROR (Status)) {
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return Status;
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}
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//
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// Signal the EFI_EVENT_GROUP_READY_TO_BOOT event.
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//
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EfiSignalEventReadyToBoot ();
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REPORT_STATUS_CODE (
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EFI_PROGRESS_CODE,
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(EFI_SOFTWARE_DXE_BS_DRIVER | EFI_SW_DXE_BS_PC_READY_TO_BOOT_EVENT)
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);
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//
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// Start the image.
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//
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Status = QemuStartKernelImage (&KernelImageHandle);
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if (EFI_ERROR (Status)) {
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DEBUG ((
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DEBUG_ERROR,
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"%a: QemuStartKernelImage(): %r\n",
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__func__,
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Status
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));
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}
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QemuUnloadKernelImage (KernelImageHandle);
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return Status;
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}
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