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@@ -13,15 +13,18 @@
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#include <Guid/FileInfo.h>
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#include <Guid/FileSystemInfo.h>
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#include <Guid/FileSystemVolumeLabelInfo.h>
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+#include <Guid/LinuxEfiInitrdMedia.h>
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#include <Guid/QemuKernelLoaderFsMedia.h>
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#include <Library/BaseLib.h>
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#include <Library/BaseMemoryLib.h>
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#include <Library/DebugLib.h>
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+#include <Library/DevicePathLib.h>
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#include <Library/MemoryAllocationLib.h>
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#include <Library/QemuFwCfgLib.h>
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#include <Library/UefiBootServicesTableLib.h>
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#include <Library/UefiRuntimeServicesTableLib.h>
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#include <Protocol/DevicePath.h>
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+#include <Protocol/LoadFile2.h>
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#include <Protocol/SimpleFileSystem.h>
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//
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@@ -84,6 +87,19 @@ STATIC CONST SINGLE_VENMEDIA_NODE_DEVPATH mFileSystemDevicePath = {
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}
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};
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+STATIC CONST SINGLE_VENMEDIA_NODE_DEVPATH mInitrdDevicePath = {
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+ {
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+ {
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+ MEDIA_DEVICE_PATH, MEDIA_VENDOR_DP,
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+ { sizeof (VENDOR_DEVICE_PATH) }
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+ },
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+ LINUX_EFI_INITRD_MEDIA_GUID
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+ }, {
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+ END_DEVICE_PATH_TYPE, END_ENTIRE_DEVICE_PATH_SUBTYPE,
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+ { sizeof (EFI_DEVICE_PATH_PROTOCOL) }
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+ }
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+};
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+
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//
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// The "file in the EFI stub filesystem" abstraction.
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//
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@@ -839,6 +855,48 @@ STATIC CONST EFI_SIMPLE_FILE_SYSTEM_PROTOCOL mFileSystem = {
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StubFileSystemOpenVolume
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};
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+STATIC
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+EFI_STATUS
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+EFIAPI
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+InitrdLoadFile2 (
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+ IN EFI_LOAD_FILE2_PROTOCOL *This,
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+ IN EFI_DEVICE_PATH_PROTOCOL *FilePath,
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+ IN BOOLEAN BootPolicy,
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+ IN OUT UINTN *BufferSize,
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+ OUT VOID *Buffer OPTIONAL
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+ )
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+{
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+ CONST KERNEL_BLOB *InitrdBlob = &mKernelBlob[KernelBlobTypeInitrd];
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+
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+ ASSERT (InitrdBlob->Size > 0);
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+
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+ if (BootPolicy) {
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+ return EFI_UNSUPPORTED;
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+ }
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+
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+ if (BufferSize == NULL || !IsDevicePathValid (FilePath, 0)) {
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+ return EFI_INVALID_PARAMETER;
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+ }
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+
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+ if (FilePath->Type != END_DEVICE_PATH_TYPE ||
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+ FilePath->SubType != END_ENTIRE_DEVICE_PATH_SUBTYPE) {
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+ return EFI_NOT_FOUND;
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+ }
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+
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+ if (Buffer == NULL || *BufferSize < InitrdBlob->Size) {
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+ *BufferSize = InitrdBlob->Size;
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+ return EFI_BUFFER_TOO_SMALL;
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+ }
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+
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+ CopyMem (Buffer, InitrdBlob->Data, InitrdBlob->Size);
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+
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+ *BufferSize = InitrdBlob->Size;
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+ return EFI_SUCCESS;
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+}
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+
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+STATIC CONST EFI_LOAD_FILE2_PROTOCOL mInitrdLoadFile2 = {
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+ InitrdLoadFile2,
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+};
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//
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// Utility functions.
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@@ -949,6 +1007,7 @@ QemuKernelLoaderFsDxeEntrypoint (
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KERNEL_BLOB *KernelBlob;
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EFI_STATUS Status;
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EFI_HANDLE FileSystemHandle;
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+ EFI_HANDLE InitrdLoadFile2Handle;
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if (!QemuFwCfgIsAvailable ()) {
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return EFI_NOT_FOUND;
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@@ -993,8 +1052,28 @@ QemuKernelLoaderFsDxeEntrypoint (
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goto FreeBlobs;
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}
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+ if (KernelBlob[KernelBlobTypeInitrd].Size > 0) {
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+ InitrdLoadFile2Handle = NULL;
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+ Status = gBS->InstallMultipleProtocolInterfaces (&InitrdLoadFile2Handle,
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+ &gEfiDevicePathProtocolGuid, &mInitrdDevicePath,
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+ &gEfiLoadFile2ProtocolGuid, &mInitrdLoadFile2,
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+ NULL);
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+ if (EFI_ERROR (Status)) {
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+ DEBUG ((DEBUG_ERROR, "%a: InstallMultipleProtocolInterfaces(): %r\n",
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+ __FUNCTION__, Status));
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+ goto UninstallFileSystemHandle;
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+ }
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+ }
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+
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return EFI_SUCCESS;
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+UninstallFileSystemHandle:
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+ Status = gBS->UninstallMultipleProtocolInterfaces (FileSystemHandle,
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+ &gEfiDevicePathProtocolGuid, &mFileSystemDevicePath,
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+ &gEfiSimpleFileSystemProtocolGuid, &mFileSystem,
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+ NULL);
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+ ASSERT_EFI_ERROR (Status);
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+
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FreeBlobs:
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while (BlobType > 0) {
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CurrentBlob = &mKernelBlob[--BlobType];
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