mirror of https://github.com/acidanthera/audk.git
OvmfPkg/AcpiPlatformDxe: Split QEMU fw-cfg into a new file
The code left behind in Qemu.c has some PCAT dependencies, and might not be able to build on all platforms. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Jordan Justen <jordan.l.justen@intel.com> Reviewed-by: Laszlo Ersek <lersek@redhat.com> Signed-off-by: Laszlo Ersek <lersek@redhat.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16696 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
Jordan Justen
lersek
parent
9054e55a22
commit
14b0faadfc
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@ -29,6 +29,7 @@
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[Sources]
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[Sources]
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AcpiPlatform.c
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AcpiPlatform.c
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Qemu.c
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Qemu.c
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QemuFwCfgAcpi.c
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Xen.c
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Xen.c
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[Packages]
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[Packages]
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@ -516,663 +516,3 @@ QemuInstallAcpiTable (
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TableKey
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TableKey
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);
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);
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}
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}
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//
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// The user structure for the ordered collection that will track the fw_cfg
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// blobs under processing.
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//
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typedef struct {
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UINT8 File[QEMU_LOADER_FNAME_SIZE]; // NUL-terminated name of the fw_cfg
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// blob. This is the ordering / search
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// key.
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UINTN Size; // The number of bytes in this blob.
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UINT8 *Base; // Pointer to the blob data.
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BOOLEAN HostsOnlyTableData; // TRUE iff the blob has been found to
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// only contain data that is directly
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// part of ACPI tables.
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} BLOB;
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/**
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Compare a standalone key against a user structure containing an embedded key.
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@param[in] StandaloneKey Pointer to the bare key.
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@param[in] UserStruct Pointer to the user structure with the embedded
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key.
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@retval <0 If StandaloneKey compares less than UserStruct's key.
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@retval 0 If StandaloneKey compares equal to UserStruct's key.
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@retval >0 If StandaloneKey compares greater than UserStruct's key.
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**/
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STATIC
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INTN
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EFIAPI
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BlobKeyCompare (
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IN CONST VOID *StandaloneKey,
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IN CONST VOID *UserStruct
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)
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{
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CONST BLOB *Blob;
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Blob = UserStruct;
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return AsciiStrCmp (StandaloneKey, (CONST CHAR8 *)Blob->File);
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}
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/**
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Comparator function for two user structures.
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@param[in] UserStruct1 Pointer to the first user structure.
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@param[in] UserStruct2 Pointer to the second user structure.
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@retval <0 If UserStruct1 compares less than UserStruct2.
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@retval 0 If UserStruct1 compares equal to UserStruct2.
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@retval >0 If UserStruct1 compares greater than UserStruct2.
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**/
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STATIC
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INTN
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EFIAPI
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BlobCompare (
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IN CONST VOID *UserStruct1,
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IN CONST VOID *UserStruct2
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)
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{
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CONST BLOB *Blob1;
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Blob1 = UserStruct1;
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return BlobKeyCompare (Blob1->File, UserStruct2);
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}
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/**
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Process a QEMU_LOADER_ALLOCATE command.
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@param[in] Allocate The QEMU_LOADER_ALLOCATE command to process.
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@param[in,out] Tracker The ORDERED_COLLECTION tracking the BLOB user
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structures created thus far.
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@retval EFI_SUCCESS An area of whole AcpiNVS pages has been
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allocated for the blob contents, and the
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contents have been saved. A BLOB object (user
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structure) has been allocated from pool memory,
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referencing the blob contents. The BLOB user
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structure has been linked into Tracker.
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@retval EFI_PROTOCOL_ERROR Malformed fw_cfg file name has been found in
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Allocate, or the Allocate command references a
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file that is already known by Tracker.
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@retval EFI_UNSUPPORTED Unsupported alignment request has been found in
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Allocate.
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@retval EFI_OUT_OF_RESOURCES Pool allocation failed.
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@return Error codes from QemuFwCfgFindFile() and
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gBS->AllocatePages().
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**/
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STATIC
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EFI_STATUS
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EFIAPI
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ProcessCmdAllocate (
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IN CONST QEMU_LOADER_ALLOCATE *Allocate,
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IN OUT ORDERED_COLLECTION *Tracker
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)
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{
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FIRMWARE_CONFIG_ITEM FwCfgItem;
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UINTN FwCfgSize;
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EFI_STATUS Status;
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UINTN NumPages;
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EFI_PHYSICAL_ADDRESS Address;
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BLOB *Blob;
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if (Allocate->File[QEMU_LOADER_FNAME_SIZE - 1] != '\0') {
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DEBUG ((EFI_D_ERROR, "%a: malformed file name\n", __FUNCTION__));
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return EFI_PROTOCOL_ERROR;
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}
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if (Allocate->Alignment > EFI_PAGE_SIZE) {
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DEBUG ((EFI_D_ERROR, "%a: unsupported alignment 0x%x\n", __FUNCTION__,
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Allocate->Alignment));
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return EFI_UNSUPPORTED;
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}
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Status = QemuFwCfgFindFile ((CHAR8 *)Allocate->File, &FwCfgItem, &FwCfgSize);
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if (EFI_ERROR (Status)) {
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DEBUG ((EFI_D_ERROR, "%a: QemuFwCfgFindFile(\"%a\"): %r\n", __FUNCTION__,
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Allocate->File, Status));
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return Status;
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}
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NumPages = EFI_SIZE_TO_PAGES (FwCfgSize);
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Address = 0xFFFFFFFF;
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Status = gBS->AllocatePages (AllocateMaxAddress, EfiACPIMemoryNVS, NumPages,
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&Address);
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if (EFI_ERROR (Status)) {
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return Status;
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}
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Blob = AllocatePool (sizeof *Blob);
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if (Blob == NULL) {
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Status = EFI_OUT_OF_RESOURCES;
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goto FreePages;
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}
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CopyMem (Blob->File, Allocate->File, QEMU_LOADER_FNAME_SIZE);
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Blob->Size = FwCfgSize;
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Blob->Base = (VOID *)(UINTN)Address;
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Blob->HostsOnlyTableData = TRUE;
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Status = OrderedCollectionInsert (Tracker, NULL, Blob);
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if (Status == RETURN_ALREADY_STARTED) {
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DEBUG ((EFI_D_ERROR, "%a: duplicated file \"%a\"\n", __FUNCTION__,
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Allocate->File));
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Status = EFI_PROTOCOL_ERROR;
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}
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if (EFI_ERROR (Status)) {
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goto FreeBlob;
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}
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QemuFwCfgSelectItem (FwCfgItem);
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QemuFwCfgReadBytes (FwCfgSize, Blob->Base);
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ZeroMem (Blob->Base + Blob->Size, EFI_PAGES_TO_SIZE (NumPages) - Blob->Size);
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DEBUG ((EFI_D_VERBOSE, "%a: File=\"%a\" Alignment=0x%x Zone=%d Size=0x%Lx "
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"Address=0x%Lx\n", __FUNCTION__, Allocate->File, Allocate->Alignment,
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Allocate->Zone, (UINT64)Blob->Size, (UINT64)(UINTN)Blob->Base));
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return EFI_SUCCESS;
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FreeBlob:
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FreePool (Blob);
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FreePages:
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gBS->FreePages (Address, NumPages);
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return Status;
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}
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/**
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Process a QEMU_LOADER_ADD_POINTER command.
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@param[in] AddPointer The QEMU_LOADER_ADD_POINTER command to process.
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@param[in] Tracker The ORDERED_COLLECTION tracking the BLOB user
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structures created thus far.
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@retval EFI_PROTOCOL_ERROR Malformed fw_cfg file name(s) have been found in
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AddPointer, or the AddPointer command references
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a file unknown to Tracker, or the pointer to
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relocate has invalid location, size, or value, or
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the relocated pointer value is not representable
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in the given pointer size.
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@retval EFI_SUCCESS The pointer field inside the pointer blob has
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been relocated.
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**/
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STATIC
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EFI_STATUS
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EFIAPI
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ProcessCmdAddPointer (
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IN CONST QEMU_LOADER_ADD_POINTER *AddPointer,
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IN CONST ORDERED_COLLECTION *Tracker
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)
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{
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ORDERED_COLLECTION_ENTRY *TrackerEntry, *TrackerEntry2;
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BLOB *Blob, *Blob2;
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UINT8 *PointerField;
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UINT64 PointerValue;
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if (AddPointer->PointerFile[QEMU_LOADER_FNAME_SIZE - 1] != '\0' ||
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AddPointer->PointeeFile[QEMU_LOADER_FNAME_SIZE - 1] != '\0') {
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DEBUG ((EFI_D_ERROR, "%a: malformed file name\n", __FUNCTION__));
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return EFI_PROTOCOL_ERROR;
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}
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TrackerEntry = OrderedCollectionFind (Tracker, AddPointer->PointerFile);
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TrackerEntry2 = OrderedCollectionFind (Tracker, AddPointer->PointeeFile);
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if (TrackerEntry == NULL || TrackerEntry2 == NULL) {
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DEBUG ((EFI_D_ERROR, "%a: invalid blob reference(s) \"%a\" / \"%a\"\n",
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__FUNCTION__, AddPointer->PointerFile, AddPointer->PointeeFile));
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return EFI_PROTOCOL_ERROR;
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}
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Blob = OrderedCollectionUserStruct (TrackerEntry);
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Blob2 = OrderedCollectionUserStruct (TrackerEntry2);
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if ((AddPointer->PointerSize != 1 && AddPointer->PointerSize != 2 &&
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AddPointer->PointerSize != 4 && AddPointer->PointerSize != 8) ||
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Blob->Size < AddPointer->PointerSize ||
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Blob->Size - AddPointer->PointerSize < AddPointer->PointerOffset) {
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DEBUG ((EFI_D_ERROR, "%a: invalid pointer location or size in \"%a\"\n",
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__FUNCTION__, AddPointer->PointerFile));
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return EFI_PROTOCOL_ERROR;
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}
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PointerField = Blob->Base + AddPointer->PointerOffset;
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PointerValue = 0;
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CopyMem (&PointerValue, PointerField, AddPointer->PointerSize);
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if (PointerValue >= Blob2->Size) {
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DEBUG ((EFI_D_ERROR, "%a: invalid pointer value in \"%a\"\n", __FUNCTION__,
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AddPointer->PointerFile));
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return EFI_PROTOCOL_ERROR;
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}
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//
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// The memory allocation system ensures that the address of the byte past the
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// last byte of any allocated object is expressible (no wraparound).
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//
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ASSERT ((UINTN)Blob2->Base <= MAX_ADDRESS - Blob2->Size);
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PointerValue += (UINT64)(UINTN)Blob2->Base;
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if (RShiftU64 (
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RShiftU64 (PointerValue, AddPointer->PointerSize * 8 - 1), 1) != 0) {
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DEBUG ((EFI_D_ERROR, "%a: relocated pointer value unrepresentable in "
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"\"%a\"\n", __FUNCTION__, AddPointer->PointerFile));
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return EFI_PROTOCOL_ERROR;
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}
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CopyMem (PointerField, &PointerValue, AddPointer->PointerSize);
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DEBUG ((EFI_D_VERBOSE, "%a: PointerFile=\"%a\" PointeeFile=\"%a\" "
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"PointerOffset=0x%x PointerSize=%d\n", __FUNCTION__,
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AddPointer->PointerFile, AddPointer->PointeeFile,
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AddPointer->PointerOffset, AddPointer->PointerSize));
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return EFI_SUCCESS;
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}
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/**
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Process a QEMU_LOADER_ADD_CHECKSUM command.
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@param[in] AddChecksum The QEMU_LOADER_ADD_CHECKSUM command to process.
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@param[in] Tracker The ORDERED_COLLECTION tracking the BLOB user
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structures created thus far.
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@retval EFI_PROTOCOL_ERROR Malformed fw_cfg file name has been found in
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AddChecksum, or the AddChecksum command
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references a file unknown to Tracker, or the
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range to checksum is invalid.
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|
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@retval EFI_SUCCESS The requested range has been checksummed.
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**/
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STATIC
|
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EFI_STATUS
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EFIAPI
|
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ProcessCmdAddChecksum (
|
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IN CONST QEMU_LOADER_ADD_CHECKSUM *AddChecksum,
|
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||||||
IN CONST ORDERED_COLLECTION *Tracker
|
|
||||||
)
|
|
||||||
{
|
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ORDERED_COLLECTION_ENTRY *TrackerEntry;
|
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BLOB *Blob;
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|
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if (AddChecksum->File[QEMU_LOADER_FNAME_SIZE - 1] != '\0') {
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DEBUG ((EFI_D_ERROR, "%a: malformed file name\n", __FUNCTION__));
|
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return EFI_PROTOCOL_ERROR;
|
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}
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||||||
|
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TrackerEntry = OrderedCollectionFind (Tracker, AddChecksum->File);
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if (TrackerEntry == NULL) {
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DEBUG ((EFI_D_ERROR, "%a: invalid blob reference \"%a\"\n", __FUNCTION__,
|
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AddChecksum->File));
|
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return EFI_PROTOCOL_ERROR;
|
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||||||
}
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||||||
|
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Blob = OrderedCollectionUserStruct (TrackerEntry);
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if (Blob->Size <= AddChecksum->ResultOffset ||
|
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Blob->Size < AddChecksum->Length ||
|
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Blob->Size - AddChecksum->Length < AddChecksum->Start) {
|
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DEBUG ((EFI_D_ERROR, "%a: invalid checksum range in \"%a\"\n",
|
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__FUNCTION__, AddChecksum->File));
|
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return EFI_PROTOCOL_ERROR;
|
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||||||
}
|
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||||||
|
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||||||
Blob->Base[AddChecksum->ResultOffset] = CalculateCheckSum8 (
|
|
||||||
Blob->Base + AddChecksum->Start,
|
|
||||||
AddChecksum->Length
|
|
||||||
);
|
|
||||||
DEBUG ((EFI_D_VERBOSE, "%a: File=\"%a\" ResultOffset=0x%x Start=0x%x "
|
|
||||||
"Length=0x%x\n", __FUNCTION__, AddChecksum->File,
|
|
||||||
AddChecksum->ResultOffset, AddChecksum->Start, AddChecksum->Length));
|
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||||||
return EFI_SUCCESS;
|
|
||||||
}
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|
||||||
|
|
||||||
|
|
||||||
//
|
|
||||||
// We'll be saving the keys of installed tables so that we can roll them back
|
|
||||||
// in case of failure. 128 tables should be enough for anyone (TM).
|
|
||||||
//
|
|
||||||
#define INSTALLED_TABLES_MAX 128
|
|
||||||
|
|
||||||
/**
|
|
||||||
Process a QEMU_LOADER_ADD_POINTER command in order to see if its target byte
|
|
||||||
array is an ACPI table, and if so, install it.
|
|
||||||
|
|
||||||
This function assumes that the entire QEMU linker/loader command file has
|
|
||||||
been processed successfuly in a prior first pass.
|
|
||||||
|
|
||||||
@param[in] AddPointer The QEMU_LOADER_ADD_POINTER command to process.
|
|
||||||
|
|
||||||
@param[in] Tracker The ORDERED_COLLECTION tracking the BLOB user
|
|
||||||
structures.
|
|
||||||
|
|
||||||
@param[in] AcpiProtocol The ACPI table protocol used to install tables.
|
|
||||||
|
|
||||||
@param[in,out] InstalledKey On input, an array of INSTALLED_TABLES_MAX UINTN
|
|
||||||
elements, allocated by the caller. On output,
|
|
||||||
the function will have stored (appended) the
|
|
||||||
AcpiProtocol-internal key of the ACPI table that
|
|
||||||
the function has installed, if the AddPointer
|
|
||||||
command identified an ACPI table that is
|
|
||||||
different from RSDT and XSDT.
|
|
||||||
|
|
||||||
@param[in,out] NumInstalled On input, the number of entries already used in
|
|
||||||
InstalledKey; it must be in [0,
|
|
||||||
INSTALLED_TABLES_MAX] inclusive. On output, the
|
|
||||||
parameter is incremented if the AddPointer
|
|
||||||
command identified an ACPI table that is
|
|
||||||
different from RSDT and XSDT.
|
|
||||||
|
|
||||||
@retval EFI_INVALID_PARAMETER NumInstalled was outside the allowed range on
|
|
||||||
input.
|
|
||||||
|
|
||||||
@retval EFI_OUT_OF_RESOURCES The AddPointer command identified an ACPI
|
|
||||||
table different from RSDT and XSDT, but there
|
|
||||||
was no more room in InstalledKey.
|
|
||||||
|
|
||||||
@retval EFI_SUCCESS AddPointer has been processed. Either an ACPI
|
|
||||||
table different from RSDT and XSDT has been
|
|
||||||
installed (reflected by InstalledKey and
|
|
||||||
NumInstalled), or RSDT or XSDT has been
|
|
||||||
identified but not installed, or the fw_cfg
|
|
||||||
blob pointed-into by AddPointer has been
|
|
||||||
marked as hosting something else than just
|
|
||||||
direct ACPI table contents.
|
|
||||||
|
|
||||||
@return Error codes returned by
|
|
||||||
AcpiProtocol->InstallAcpiTable().
|
|
||||||
**/
|
|
||||||
STATIC
|
|
||||||
EFI_STATUS
|
|
||||||
EFIAPI
|
|
||||||
Process2ndPassCmdAddPointer (
|
|
||||||
IN CONST QEMU_LOADER_ADD_POINTER *AddPointer,
|
|
||||||
IN CONST ORDERED_COLLECTION *Tracker,
|
|
||||||
IN EFI_ACPI_TABLE_PROTOCOL *AcpiProtocol,
|
|
||||||
IN OUT UINTN InstalledKey[INSTALLED_TABLES_MAX],
|
|
||||||
IN OUT INT32 *NumInstalled
|
|
||||||
)
|
|
||||||
{
|
|
||||||
CONST ORDERED_COLLECTION_ENTRY *TrackerEntry;
|
|
||||||
CONST ORDERED_COLLECTION_ENTRY *TrackerEntry2;
|
|
||||||
CONST BLOB *Blob;
|
|
||||||
BLOB *Blob2;
|
|
||||||
CONST UINT8 *PointerField;
|
|
||||||
UINT64 PointerValue;
|
|
||||||
UINTN Blob2Remaining;
|
|
||||||
UINTN TableSize;
|
|
||||||
CONST EFI_ACPI_1_0_FIRMWARE_ACPI_CONTROL_STRUCTURE *Facs;
|
|
||||||
CONST EFI_ACPI_DESCRIPTION_HEADER *Header;
|
|
||||||
EFI_STATUS Status;
|
|
||||||
|
|
||||||
if (*NumInstalled < 0 || *NumInstalled > INSTALLED_TABLES_MAX) {
|
|
||||||
return EFI_INVALID_PARAMETER;
|
|
||||||
}
|
|
||||||
|
|
||||||
TrackerEntry = OrderedCollectionFind (Tracker, AddPointer->PointerFile);
|
|
||||||
TrackerEntry2 = OrderedCollectionFind (Tracker, AddPointer->PointeeFile);
|
|
||||||
Blob = OrderedCollectionUserStruct (TrackerEntry);
|
|
||||||
Blob2 = OrderedCollectionUserStruct (TrackerEntry2);
|
|
||||||
PointerField = Blob->Base + AddPointer->PointerOffset;
|
|
||||||
PointerValue = 0;
|
|
||||||
CopyMem (&PointerValue, PointerField, AddPointer->PointerSize);
|
|
||||||
|
|
||||||
//
|
|
||||||
// We assert that PointerValue falls inside Blob2's contents. This is ensured
|
|
||||||
// by the Blob2->Size check and later checks in ProcessCmdAddPointer().
|
|
||||||
//
|
|
||||||
Blob2Remaining = (UINTN)Blob2->Base;
|
|
||||||
ASSERT(PointerValue >= Blob2Remaining);
|
|
||||||
Blob2Remaining += Blob2->Size;
|
|
||||||
ASSERT (PointerValue < Blob2Remaining);
|
|
||||||
|
|
||||||
Blob2Remaining -= (UINTN) PointerValue;
|
|
||||||
DEBUG ((EFI_D_VERBOSE, "%a: checking for ACPI header in \"%a\" at 0x%Lx "
|
|
||||||
"(remaining: 0x%Lx): ", __FUNCTION__, AddPointer->PointeeFile,
|
|
||||||
PointerValue, (UINT64)Blob2Remaining));
|
|
||||||
|
|
||||||
TableSize = 0;
|
|
||||||
|
|
||||||
//
|
|
||||||
// To make our job simple, the FACS has a custom header. Sigh.
|
|
||||||
//
|
|
||||||
if (sizeof *Facs <= Blob2Remaining) {
|
|
||||||
Facs = (EFI_ACPI_1_0_FIRMWARE_ACPI_CONTROL_STRUCTURE *)(UINTN)PointerValue;
|
|
||||||
|
|
||||||
if (Facs->Length >= sizeof *Facs &&
|
|
||||||
Facs->Length <= Blob2Remaining &&
|
|
||||||
Facs->Signature ==
|
|
||||||
EFI_ACPI_1_0_FIRMWARE_ACPI_CONTROL_STRUCTURE_SIGNATURE) {
|
|
||||||
DEBUG ((EFI_D_VERBOSE, "found \"%-4.4a\" size 0x%x\n",
|
|
||||||
(CONST CHAR8 *)&Facs->Signature, Facs->Length));
|
|
||||||
TableSize = Facs->Length;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
//
|
|
||||||
// check for the uniform tables
|
|
||||||
//
|
|
||||||
if (TableSize == 0 && sizeof *Header <= Blob2Remaining) {
|
|
||||||
Header = (EFI_ACPI_DESCRIPTION_HEADER *)(UINTN)PointerValue;
|
|
||||||
|
|
||||||
if (Header->Length >= sizeof *Header &&
|
|
||||||
Header->Length <= Blob2Remaining &&
|
|
||||||
CalculateSum8 ((CONST UINT8 *)Header, Header->Length) == 0) {
|
|
||||||
//
|
|
||||||
// This looks very much like an ACPI table from QEMU:
|
|
||||||
// - Length field consistent with both ACPI and containing blob size
|
|
||||||
// - checksum is correct
|
|
||||||
//
|
|
||||||
DEBUG ((EFI_D_VERBOSE, "found \"%-4.4a\" size 0x%x\n",
|
|
||||||
(CONST CHAR8 *)&Header->Signature, Header->Length));
|
|
||||||
TableSize = Header->Length;
|
|
||||||
|
|
||||||
//
|
|
||||||
// Skip RSDT and XSDT because those are handled by
|
|
||||||
// EFI_ACPI_TABLE_PROTOCOL automatically.
|
|
||||||
if (Header->Signature ==
|
|
||||||
EFI_ACPI_1_0_ROOT_SYSTEM_DESCRIPTION_TABLE_SIGNATURE ||
|
|
||||||
Header->Signature ==
|
|
||||||
EFI_ACPI_2_0_EXTENDED_SYSTEM_DESCRIPTION_TABLE_SIGNATURE) {
|
|
||||||
return EFI_SUCCESS;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
if (TableSize == 0) {
|
|
||||||
DEBUG ((EFI_D_VERBOSE, "not found; marking fw_cfg blob as opaque\n"));
|
|
||||||
Blob2->HostsOnlyTableData = FALSE;
|
|
||||||
return EFI_SUCCESS;
|
|
||||||
}
|
|
||||||
|
|
||||||
if (*NumInstalled == INSTALLED_TABLES_MAX) {
|
|
||||||
DEBUG ((EFI_D_ERROR, "%a: can't install more than %d tables\n",
|
|
||||||
__FUNCTION__, INSTALLED_TABLES_MAX));
|
|
||||||
return EFI_OUT_OF_RESOURCES;
|
|
||||||
}
|
|
||||||
|
|
||||||
Status = AcpiProtocol->InstallAcpiTable (AcpiProtocol,
|
|
||||||
(VOID *)(UINTN)PointerValue, TableSize,
|
|
||||||
&InstalledKey[*NumInstalled]);
|
|
||||||
if (EFI_ERROR (Status)) {
|
|
||||||
DEBUG ((EFI_D_ERROR, "%a: InstallAcpiTable(): %r\n", __FUNCTION__,
|
|
||||||
Status));
|
|
||||||
return Status;
|
|
||||||
}
|
|
||||||
++*NumInstalled;
|
|
||||||
return EFI_SUCCESS;
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
/**
|
|
||||||
Download, process, and install ACPI table data from the QEMU loader
|
|
||||||
interface.
|
|
||||||
|
|
||||||
@param[in] AcpiProtocol The ACPI table protocol used to install tables.
|
|
||||||
|
|
||||||
@retval EFI_UNSUPPORTED Firmware configuration is unavailable, or QEMU
|
|
||||||
loader command with unsupported parameters
|
|
||||||
has been found.
|
|
||||||
|
|
||||||
@retval EFI_NOT_FOUND The host doesn't export the required fw_cfg
|
|
||||||
files.
|
|
||||||
|
|
||||||
@retval EFI_OUT_OF_RESOURCES Memory allocation failed, or more than
|
|
||||||
INSTALLED_TABLES_MAX tables found.
|
|
||||||
|
|
||||||
@retval EFI_PROTOCOL_ERROR Found invalid fw_cfg contents.
|
|
||||||
|
|
||||||
@return Status codes returned by
|
|
||||||
AcpiProtocol->InstallAcpiTable().
|
|
||||||
|
|
||||||
**/
|
|
||||||
EFI_STATUS
|
|
||||||
EFIAPI
|
|
||||||
InstallAllQemuLinkedTables (
|
|
||||||
IN EFI_ACPI_TABLE_PROTOCOL *AcpiProtocol
|
|
||||||
)
|
|
||||||
{
|
|
||||||
EFI_STATUS Status;
|
|
||||||
FIRMWARE_CONFIG_ITEM FwCfgItem;
|
|
||||||
UINTN FwCfgSize;
|
|
||||||
QEMU_LOADER_ENTRY *LoaderStart;
|
|
||||||
CONST QEMU_LOADER_ENTRY *LoaderEntry, *LoaderEnd;
|
|
||||||
ORDERED_COLLECTION *Tracker;
|
|
||||||
UINTN *InstalledKey;
|
|
||||||
INT32 Installed;
|
|
||||||
ORDERED_COLLECTION_ENTRY *TrackerEntry, *TrackerEntry2;
|
|
||||||
|
|
||||||
Status = QemuFwCfgFindFile ("etc/table-loader", &FwCfgItem, &FwCfgSize);
|
|
||||||
if (EFI_ERROR (Status)) {
|
|
||||||
return Status;
|
|
||||||
}
|
|
||||||
if (FwCfgSize % sizeof *LoaderEntry != 0) {
|
|
||||||
DEBUG ((EFI_D_ERROR, "%a: \"etc/table-loader\" has invalid size 0x%Lx\n",
|
|
||||||
__FUNCTION__, (UINT64)FwCfgSize));
|
|
||||||
return EFI_PROTOCOL_ERROR;
|
|
||||||
}
|
|
||||||
|
|
||||||
LoaderStart = AllocatePool (FwCfgSize);
|
|
||||||
if (LoaderStart == NULL) {
|
|
||||||
return EFI_OUT_OF_RESOURCES;
|
|
||||||
}
|
|
||||||
QemuFwCfgSelectItem (FwCfgItem);
|
|
||||||
QemuFwCfgReadBytes (FwCfgSize, LoaderStart);
|
|
||||||
LoaderEnd = LoaderStart + FwCfgSize / sizeof *LoaderEntry;
|
|
||||||
|
|
||||||
Tracker = OrderedCollectionInit (BlobCompare, BlobKeyCompare);
|
|
||||||
if (Tracker == NULL) {
|
|
||||||
Status = EFI_OUT_OF_RESOURCES;
|
|
||||||
goto FreeLoader;
|
|
||||||
}
|
|
||||||
|
|
||||||
//
|
|
||||||
// first pass: process the commands
|
|
||||||
//
|
|
||||||
for (LoaderEntry = LoaderStart; LoaderEntry < LoaderEnd; ++LoaderEntry) {
|
|
||||||
switch (LoaderEntry->Type) {
|
|
||||||
case QemuLoaderCmdAllocate:
|
|
||||||
Status = ProcessCmdAllocate (&LoaderEntry->Command.Allocate, Tracker);
|
|
||||||
break;
|
|
||||||
|
|
||||||
case QemuLoaderCmdAddPointer:
|
|
||||||
Status = ProcessCmdAddPointer (&LoaderEntry->Command.AddPointer,
|
|
||||||
Tracker);
|
|
||||||
break;
|
|
||||||
|
|
||||||
case QemuLoaderCmdAddChecksum:
|
|
||||||
Status = ProcessCmdAddChecksum (&LoaderEntry->Command.AddChecksum,
|
|
||||||
Tracker);
|
|
||||||
break;
|
|
||||||
|
|
||||||
default:
|
|
||||||
DEBUG ((EFI_D_VERBOSE, "%a: unknown loader command: 0x%x\n",
|
|
||||||
__FUNCTION__, LoaderEntry->Type));
|
|
||||||
break;
|
|
||||||
}
|
|
||||||
|
|
||||||
if (EFI_ERROR (Status)) {
|
|
||||||
goto FreeTracker;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
InstalledKey = AllocatePool (INSTALLED_TABLES_MAX * sizeof *InstalledKey);
|
|
||||||
if (InstalledKey == NULL) {
|
|
||||||
Status = EFI_OUT_OF_RESOURCES;
|
|
||||||
goto FreeTracker;
|
|
||||||
}
|
|
||||||
|
|
||||||
//
|
|
||||||
// second pass: identify and install ACPI tables
|
|
||||||
//
|
|
||||||
Installed = 0;
|
|
||||||
for (LoaderEntry = LoaderStart; LoaderEntry < LoaderEnd; ++LoaderEntry) {
|
|
||||||
if (LoaderEntry->Type == QemuLoaderCmdAddPointer) {
|
|
||||||
Status = Process2ndPassCmdAddPointer (&LoaderEntry->Command.AddPointer,
|
|
||||||
Tracker, AcpiProtocol, InstalledKey, &Installed);
|
|
||||||
if (EFI_ERROR (Status)) {
|
|
||||||
break;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
if (EFI_ERROR (Status)) {
|
|
||||||
//
|
|
||||||
// roll back partial installation
|
|
||||||
//
|
|
||||||
while (Installed > 0) {
|
|
||||||
--Installed;
|
|
||||||
AcpiProtocol->UninstallAcpiTable (AcpiProtocol, InstalledKey[Installed]);
|
|
||||||
}
|
|
||||||
} else {
|
|
||||||
DEBUG ((EFI_D_INFO, "%a: installed %d tables\n", __FUNCTION__, Installed));
|
|
||||||
}
|
|
||||||
|
|
||||||
FreePool (InstalledKey);
|
|
||||||
|
|
||||||
FreeTracker:
|
|
||||||
//
|
|
||||||
// Tear down the tracker infrastructure. Each fw_cfg blob will be left in
|
|
||||||
// place only if we're exiting with success and the blob hosts data that is
|
|
||||||
// not directly part of some ACPI table.
|
|
||||||
//
|
|
||||||
for (TrackerEntry = OrderedCollectionMin (Tracker); TrackerEntry != NULL;
|
|
||||||
TrackerEntry = TrackerEntry2) {
|
|
||||||
VOID *UserStruct;
|
|
||||||
BLOB *Blob;
|
|
||||||
|
|
||||||
TrackerEntry2 = OrderedCollectionNext (TrackerEntry);
|
|
||||||
OrderedCollectionDelete (Tracker, TrackerEntry, &UserStruct);
|
|
||||||
Blob = UserStruct;
|
|
||||||
|
|
||||||
if (EFI_ERROR (Status) || Blob->HostsOnlyTableData) {
|
|
||||||
DEBUG ((EFI_D_VERBOSE, "%a: freeing \"%a\"\n", __FUNCTION__,
|
|
||||||
Blob->File));
|
|
||||||
gBS->FreePages ((UINTN)Blob->Base, EFI_SIZE_TO_PAGES (Blob->Size));
|
|
||||||
}
|
|
||||||
FreePool (Blob);
|
|
||||||
}
|
|
||||||
OrderedCollectionUninit (Tracker);
|
|
||||||
|
|
||||||
FreeLoader:
|
|
||||||
FreePool (LoaderStart);
|
|
||||||
|
|
||||||
return Status;
|
|
||||||
}
|
|
||||||
|
|
|
||||||
|
|
@ -0,0 +1,685 @@
|
||||||
|
/** @file
|
||||||
|
OVMF ACPI support using QEMU's fw-cfg interface
|
||||||
|
|
||||||
|
Copyright (c) 2008 - 2014, Intel Corporation. All rights reserved.<BR>
|
||||||
|
Copyright (C) 2012-2014, Red Hat, Inc.
|
||||||
|
|
||||||
|
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 "AcpiPlatform.h"
|
||||||
|
#include "QemuLoader.h"
|
||||||
|
#include <Library/BaseMemoryLib.h>
|
||||||
|
#include <Library/MemoryAllocationLib.h>
|
||||||
|
#include <Library/QemuFwCfgLib.h>
|
||||||
|
#include <Library/DxeServicesTableLib.h>
|
||||||
|
#include <Library/PcdLib.h>
|
||||||
|
#include <Library/OrderedCollectionLib.h>
|
||||||
|
#include <IndustryStandard/Acpi.h>
|
||||||
|
|
||||||
|
|
||||||
|
//
|
||||||
|
// The user structure for the ordered collection that will track the fw_cfg
|
||||||
|
// blobs under processing.
|
||||||
|
//
|
||||||
|
typedef struct {
|
||||||
|
UINT8 File[QEMU_LOADER_FNAME_SIZE]; // NUL-terminated name of the fw_cfg
|
||||||
|
// blob. This is the ordering / search
|
||||||
|
// key.
|
||||||
|
UINTN Size; // The number of bytes in this blob.
|
||||||
|
UINT8 *Base; // Pointer to the blob data.
|
||||||
|
BOOLEAN HostsOnlyTableData; // TRUE iff the blob has been found to
|
||||||
|
// only contain data that is directly
|
||||||
|
// part of ACPI tables.
|
||||||
|
} BLOB;
|
||||||
|
|
||||||
|
|
||||||
|
/**
|
||||||
|
Compare a standalone key against a user structure containing an embedded key.
|
||||||
|
|
||||||
|
@param[in] StandaloneKey Pointer to the bare key.
|
||||||
|
|
||||||
|
@param[in] UserStruct Pointer to the user structure with the embedded
|
||||||
|
key.
|
||||||
|
|
||||||
|
@retval <0 If StandaloneKey compares less than UserStruct's key.
|
||||||
|
|
||||||
|
@retval 0 If StandaloneKey compares equal to UserStruct's key.
|
||||||
|
|
||||||
|
@retval >0 If StandaloneKey compares greater than UserStruct's key.
|
||||||
|
**/
|
||||||
|
STATIC
|
||||||
|
INTN
|
||||||
|
EFIAPI
|
||||||
|
BlobKeyCompare (
|
||||||
|
IN CONST VOID *StandaloneKey,
|
||||||
|
IN CONST VOID *UserStruct
|
||||||
|
)
|
||||||
|
{
|
||||||
|
CONST BLOB *Blob;
|
||||||
|
|
||||||
|
Blob = UserStruct;
|
||||||
|
return AsciiStrCmp (StandaloneKey, (CONST CHAR8 *)Blob->File);
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
/**
|
||||||
|
Comparator function for two user structures.
|
||||||
|
|
||||||
|
@param[in] UserStruct1 Pointer to the first user structure.
|
||||||
|
|
||||||
|
@param[in] UserStruct2 Pointer to the second user structure.
|
||||||
|
|
||||||
|
@retval <0 If UserStruct1 compares less than UserStruct2.
|
||||||
|
|
||||||
|
@retval 0 If UserStruct1 compares equal to UserStruct2.
|
||||||
|
|
||||||
|
@retval >0 If UserStruct1 compares greater than UserStruct2.
|
||||||
|
**/
|
||||||
|
STATIC
|
||||||
|
INTN
|
||||||
|
EFIAPI
|
||||||
|
BlobCompare (
|
||||||
|
IN CONST VOID *UserStruct1,
|
||||||
|
IN CONST VOID *UserStruct2
|
||||||
|
)
|
||||||
|
{
|
||||||
|
CONST BLOB *Blob1;
|
||||||
|
|
||||||
|
Blob1 = UserStruct1;
|
||||||
|
return BlobKeyCompare (Blob1->File, UserStruct2);
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
/**
|
||||||
|
Process a QEMU_LOADER_ALLOCATE command.
|
||||||
|
|
||||||
|
@param[in] Allocate The QEMU_LOADER_ALLOCATE command to process.
|
||||||
|
|
||||||
|
@param[in,out] Tracker The ORDERED_COLLECTION tracking the BLOB user
|
||||||
|
structures created thus far.
|
||||||
|
|
||||||
|
@retval EFI_SUCCESS An area of whole AcpiNVS pages has been
|
||||||
|
allocated for the blob contents, and the
|
||||||
|
contents have been saved. A BLOB object (user
|
||||||
|
structure) has been allocated from pool memory,
|
||||||
|
referencing the blob contents. The BLOB user
|
||||||
|
structure has been linked into Tracker.
|
||||||
|
|
||||||
|
@retval EFI_PROTOCOL_ERROR Malformed fw_cfg file name has been found in
|
||||||
|
Allocate, or the Allocate command references a
|
||||||
|
file that is already known by Tracker.
|
||||||
|
|
||||||
|
@retval EFI_UNSUPPORTED Unsupported alignment request has been found in
|
||||||
|
Allocate.
|
||||||
|
|
||||||
|
@retval EFI_OUT_OF_RESOURCES Pool allocation failed.
|
||||||
|
|
||||||
|
@return Error codes from QemuFwCfgFindFile() and
|
||||||
|
gBS->AllocatePages().
|
||||||
|
**/
|
||||||
|
STATIC
|
||||||
|
EFI_STATUS
|
||||||
|
EFIAPI
|
||||||
|
ProcessCmdAllocate (
|
||||||
|
IN CONST QEMU_LOADER_ALLOCATE *Allocate,
|
||||||
|
IN OUT ORDERED_COLLECTION *Tracker
|
||||||
|
)
|
||||||
|
{
|
||||||
|
FIRMWARE_CONFIG_ITEM FwCfgItem;
|
||||||
|
UINTN FwCfgSize;
|
||||||
|
EFI_STATUS Status;
|
||||||
|
UINTN NumPages;
|
||||||
|
EFI_PHYSICAL_ADDRESS Address;
|
||||||
|
BLOB *Blob;
|
||||||
|
|
||||||
|
if (Allocate->File[QEMU_LOADER_FNAME_SIZE - 1] != '\0') {
|
||||||
|
DEBUG ((EFI_D_ERROR, "%a: malformed file name\n", __FUNCTION__));
|
||||||
|
return EFI_PROTOCOL_ERROR;
|
||||||
|
}
|
||||||
|
|
||||||
|
if (Allocate->Alignment > EFI_PAGE_SIZE) {
|
||||||
|
DEBUG ((EFI_D_ERROR, "%a: unsupported alignment 0x%x\n", __FUNCTION__,
|
||||||
|
Allocate->Alignment));
|
||||||
|
return EFI_UNSUPPORTED;
|
||||||
|
}
|
||||||
|
|
||||||
|
Status = QemuFwCfgFindFile ((CHAR8 *)Allocate->File, &FwCfgItem, &FwCfgSize);
|
||||||
|
if (EFI_ERROR (Status)) {
|
||||||
|
DEBUG ((EFI_D_ERROR, "%a: QemuFwCfgFindFile(\"%a\"): %r\n", __FUNCTION__,
|
||||||
|
Allocate->File, Status));
|
||||||
|
return Status;
|
||||||
|
}
|
||||||
|
|
||||||
|
NumPages = EFI_SIZE_TO_PAGES (FwCfgSize);
|
||||||
|
Address = 0xFFFFFFFF;
|
||||||
|
Status = gBS->AllocatePages (AllocateMaxAddress, EfiACPIMemoryNVS, NumPages,
|
||||||
|
&Address);
|
||||||
|
if (EFI_ERROR (Status)) {
|
||||||
|
return Status;
|
||||||
|
}
|
||||||
|
|
||||||
|
Blob = AllocatePool (sizeof *Blob);
|
||||||
|
if (Blob == NULL) {
|
||||||
|
Status = EFI_OUT_OF_RESOURCES;
|
||||||
|
goto FreePages;
|
||||||
|
}
|
||||||
|
CopyMem (Blob->File, Allocate->File, QEMU_LOADER_FNAME_SIZE);
|
||||||
|
Blob->Size = FwCfgSize;
|
||||||
|
Blob->Base = (VOID *)(UINTN)Address;
|
||||||
|
Blob->HostsOnlyTableData = TRUE;
|
||||||
|
|
||||||
|
Status = OrderedCollectionInsert (Tracker, NULL, Blob);
|
||||||
|
if (Status == RETURN_ALREADY_STARTED) {
|
||||||
|
DEBUG ((EFI_D_ERROR, "%a: duplicated file \"%a\"\n", __FUNCTION__,
|
||||||
|
Allocate->File));
|
||||||
|
Status = EFI_PROTOCOL_ERROR;
|
||||||
|
}
|
||||||
|
if (EFI_ERROR (Status)) {
|
||||||
|
goto FreeBlob;
|
||||||
|
}
|
||||||
|
|
||||||
|
QemuFwCfgSelectItem (FwCfgItem);
|
||||||
|
QemuFwCfgReadBytes (FwCfgSize, Blob->Base);
|
||||||
|
ZeroMem (Blob->Base + Blob->Size, EFI_PAGES_TO_SIZE (NumPages) - Blob->Size);
|
||||||
|
|
||||||
|
DEBUG ((EFI_D_VERBOSE, "%a: File=\"%a\" Alignment=0x%x Zone=%d Size=0x%Lx "
|
||||||
|
"Address=0x%Lx\n", __FUNCTION__, Allocate->File, Allocate->Alignment,
|
||||||
|
Allocate->Zone, (UINT64)Blob->Size, (UINT64)(UINTN)Blob->Base));
|
||||||
|
return EFI_SUCCESS;
|
||||||
|
|
||||||
|
FreeBlob:
|
||||||
|
FreePool (Blob);
|
||||||
|
|
||||||
|
FreePages:
|
||||||
|
gBS->FreePages (Address, NumPages);
|
||||||
|
|
||||||
|
return Status;
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
/**
|
||||||
|
Process a QEMU_LOADER_ADD_POINTER command.
|
||||||
|
|
||||||
|
@param[in] AddPointer The QEMU_LOADER_ADD_POINTER command to process.
|
||||||
|
|
||||||
|
@param[in] Tracker The ORDERED_COLLECTION tracking the BLOB user
|
||||||
|
structures created thus far.
|
||||||
|
|
||||||
|
@retval EFI_PROTOCOL_ERROR Malformed fw_cfg file name(s) have been found in
|
||||||
|
AddPointer, or the AddPointer command references
|
||||||
|
a file unknown to Tracker, or the pointer to
|
||||||
|
relocate has invalid location, size, or value, or
|
||||||
|
the relocated pointer value is not representable
|
||||||
|
in the given pointer size.
|
||||||
|
|
||||||
|
@retval EFI_SUCCESS The pointer field inside the pointer blob has
|
||||||
|
been relocated.
|
||||||
|
**/
|
||||||
|
STATIC
|
||||||
|
EFI_STATUS
|
||||||
|
EFIAPI
|
||||||
|
ProcessCmdAddPointer (
|
||||||
|
IN CONST QEMU_LOADER_ADD_POINTER *AddPointer,
|
||||||
|
IN CONST ORDERED_COLLECTION *Tracker
|
||||||
|
)
|
||||||
|
{
|
||||||
|
ORDERED_COLLECTION_ENTRY *TrackerEntry, *TrackerEntry2;
|
||||||
|
BLOB *Blob, *Blob2;
|
||||||
|
UINT8 *PointerField;
|
||||||
|
UINT64 PointerValue;
|
||||||
|
|
||||||
|
if (AddPointer->PointerFile[QEMU_LOADER_FNAME_SIZE - 1] != '\0' ||
|
||||||
|
AddPointer->PointeeFile[QEMU_LOADER_FNAME_SIZE - 1] != '\0') {
|
||||||
|
DEBUG ((EFI_D_ERROR, "%a: malformed file name\n", __FUNCTION__));
|
||||||
|
return EFI_PROTOCOL_ERROR;
|
||||||
|
}
|
||||||
|
|
||||||
|
TrackerEntry = OrderedCollectionFind (Tracker, AddPointer->PointerFile);
|
||||||
|
TrackerEntry2 = OrderedCollectionFind (Tracker, AddPointer->PointeeFile);
|
||||||
|
if (TrackerEntry == NULL || TrackerEntry2 == NULL) {
|
||||||
|
DEBUG ((EFI_D_ERROR, "%a: invalid blob reference(s) \"%a\" / \"%a\"\n",
|
||||||
|
__FUNCTION__, AddPointer->PointerFile, AddPointer->PointeeFile));
|
||||||
|
return EFI_PROTOCOL_ERROR;
|
||||||
|
}
|
||||||
|
|
||||||
|
Blob = OrderedCollectionUserStruct (TrackerEntry);
|
||||||
|
Blob2 = OrderedCollectionUserStruct (TrackerEntry2);
|
||||||
|
if ((AddPointer->PointerSize != 1 && AddPointer->PointerSize != 2 &&
|
||||||
|
AddPointer->PointerSize != 4 && AddPointer->PointerSize != 8) ||
|
||||||
|
Blob->Size < AddPointer->PointerSize ||
|
||||||
|
Blob->Size - AddPointer->PointerSize < AddPointer->PointerOffset) {
|
||||||
|
DEBUG ((EFI_D_ERROR, "%a: invalid pointer location or size in \"%a\"\n",
|
||||||
|
__FUNCTION__, AddPointer->PointerFile));
|
||||||
|
return EFI_PROTOCOL_ERROR;
|
||||||
|
}
|
||||||
|
|
||||||
|
PointerField = Blob->Base + AddPointer->PointerOffset;
|
||||||
|
PointerValue = 0;
|
||||||
|
CopyMem (&PointerValue, PointerField, AddPointer->PointerSize);
|
||||||
|
if (PointerValue >= Blob2->Size) {
|
||||||
|
DEBUG ((EFI_D_ERROR, "%a: invalid pointer value in \"%a\"\n", __FUNCTION__,
|
||||||
|
AddPointer->PointerFile));
|
||||||
|
return EFI_PROTOCOL_ERROR;
|
||||||
|
}
|
||||||
|
|
||||||
|
//
|
||||||
|
// The memory allocation system ensures that the address of the byte past the
|
||||||
|
// last byte of any allocated object is expressible (no wraparound).
|
||||||
|
//
|
||||||
|
ASSERT ((UINTN)Blob2->Base <= MAX_ADDRESS - Blob2->Size);
|
||||||
|
|
||||||
|
PointerValue += (UINT64)(UINTN)Blob2->Base;
|
||||||
|
if (RShiftU64 (
|
||||||
|
RShiftU64 (PointerValue, AddPointer->PointerSize * 8 - 1), 1) != 0) {
|
||||||
|
DEBUG ((EFI_D_ERROR, "%a: relocated pointer value unrepresentable in "
|
||||||
|
"\"%a\"\n", __FUNCTION__, AddPointer->PointerFile));
|
||||||
|
return EFI_PROTOCOL_ERROR;
|
||||||
|
}
|
||||||
|
|
||||||
|
CopyMem (PointerField, &PointerValue, AddPointer->PointerSize);
|
||||||
|
|
||||||
|
DEBUG ((EFI_D_VERBOSE, "%a: PointerFile=\"%a\" PointeeFile=\"%a\" "
|
||||||
|
"PointerOffset=0x%x PointerSize=%d\n", __FUNCTION__,
|
||||||
|
AddPointer->PointerFile, AddPointer->PointeeFile,
|
||||||
|
AddPointer->PointerOffset, AddPointer->PointerSize));
|
||||||
|
return EFI_SUCCESS;
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
/**
|
||||||
|
Process a QEMU_LOADER_ADD_CHECKSUM command.
|
||||||
|
|
||||||
|
@param[in] AddChecksum The QEMU_LOADER_ADD_CHECKSUM command to process.
|
||||||
|
|
||||||
|
@param[in] Tracker The ORDERED_COLLECTION tracking the BLOB user
|
||||||
|
structures created thus far.
|
||||||
|
|
||||||
|
@retval EFI_PROTOCOL_ERROR Malformed fw_cfg file name has been found in
|
||||||
|
AddChecksum, or the AddChecksum command
|
||||||
|
references a file unknown to Tracker, or the
|
||||||
|
range to checksum is invalid.
|
||||||
|
|
||||||
|
@retval EFI_SUCCESS The requested range has been checksummed.
|
||||||
|
**/
|
||||||
|
STATIC
|
||||||
|
EFI_STATUS
|
||||||
|
EFIAPI
|
||||||
|
ProcessCmdAddChecksum (
|
||||||
|
IN CONST QEMU_LOADER_ADD_CHECKSUM *AddChecksum,
|
||||||
|
IN CONST ORDERED_COLLECTION *Tracker
|
||||||
|
)
|
||||||
|
{
|
||||||
|
ORDERED_COLLECTION_ENTRY *TrackerEntry;
|
||||||
|
BLOB *Blob;
|
||||||
|
|
||||||
|
if (AddChecksum->File[QEMU_LOADER_FNAME_SIZE - 1] != '\0') {
|
||||||
|
DEBUG ((EFI_D_ERROR, "%a: malformed file name\n", __FUNCTION__));
|
||||||
|
return EFI_PROTOCOL_ERROR;
|
||||||
|
}
|
||||||
|
|
||||||
|
TrackerEntry = OrderedCollectionFind (Tracker, AddChecksum->File);
|
||||||
|
if (TrackerEntry == NULL) {
|
||||||
|
DEBUG ((EFI_D_ERROR, "%a: invalid blob reference \"%a\"\n", __FUNCTION__,
|
||||||
|
AddChecksum->File));
|
||||||
|
return EFI_PROTOCOL_ERROR;
|
||||||
|
}
|
||||||
|
|
||||||
|
Blob = OrderedCollectionUserStruct (TrackerEntry);
|
||||||
|
if (Blob->Size <= AddChecksum->ResultOffset ||
|
||||||
|
Blob->Size < AddChecksum->Length ||
|
||||||
|
Blob->Size - AddChecksum->Length < AddChecksum->Start) {
|
||||||
|
DEBUG ((EFI_D_ERROR, "%a: invalid checksum range in \"%a\"\n",
|
||||||
|
__FUNCTION__, AddChecksum->File));
|
||||||
|
return EFI_PROTOCOL_ERROR;
|
||||||
|
}
|
||||||
|
|
||||||
|
Blob->Base[AddChecksum->ResultOffset] = CalculateCheckSum8 (
|
||||||
|
Blob->Base + AddChecksum->Start,
|
||||||
|
AddChecksum->Length
|
||||||
|
);
|
||||||
|
DEBUG ((EFI_D_VERBOSE, "%a: File=\"%a\" ResultOffset=0x%x Start=0x%x "
|
||||||
|
"Length=0x%x\n", __FUNCTION__, AddChecksum->File,
|
||||||
|
AddChecksum->ResultOffset, AddChecksum->Start, AddChecksum->Length));
|
||||||
|
return EFI_SUCCESS;
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
//
|
||||||
|
// We'll be saving the keys of installed tables so that we can roll them back
|
||||||
|
// in case of failure. 128 tables should be enough for anyone (TM).
|
||||||
|
//
|
||||||
|
#define INSTALLED_TABLES_MAX 128
|
||||||
|
|
||||||
|
/**
|
||||||
|
Process a QEMU_LOADER_ADD_POINTER command in order to see if its target byte
|
||||||
|
array is an ACPI table, and if so, install it.
|
||||||
|
|
||||||
|
This function assumes that the entire QEMU linker/loader command file has
|
||||||
|
been processed successfuly in a prior first pass.
|
||||||
|
|
||||||
|
@param[in] AddPointer The QEMU_LOADER_ADD_POINTER command to process.
|
||||||
|
|
||||||
|
@param[in] Tracker The ORDERED_COLLECTION tracking the BLOB user
|
||||||
|
structures.
|
||||||
|
|
||||||
|
@param[in] AcpiProtocol The ACPI table protocol used to install tables.
|
||||||
|
|
||||||
|
@param[in,out] InstalledKey On input, an array of INSTALLED_TABLES_MAX UINTN
|
||||||
|
elements, allocated by the caller. On output,
|
||||||
|
the function will have stored (appended) the
|
||||||
|
AcpiProtocol-internal key of the ACPI table that
|
||||||
|
the function has installed, if the AddPointer
|
||||||
|
command identified an ACPI table that is
|
||||||
|
different from RSDT and XSDT.
|
||||||
|
|
||||||
|
@param[in,out] NumInstalled On input, the number of entries already used in
|
||||||
|
InstalledKey; it must be in [0,
|
||||||
|
INSTALLED_TABLES_MAX] inclusive. On output, the
|
||||||
|
parameter is incremented if the AddPointer
|
||||||
|
command identified an ACPI table that is
|
||||||
|
different from RSDT and XSDT.
|
||||||
|
|
||||||
|
@retval EFI_INVALID_PARAMETER NumInstalled was outside the allowed range on
|
||||||
|
input.
|
||||||
|
|
||||||
|
@retval EFI_OUT_OF_RESOURCES The AddPointer command identified an ACPI
|
||||||
|
table different from RSDT and XSDT, but there
|
||||||
|
was no more room in InstalledKey.
|
||||||
|
|
||||||
|
@retval EFI_SUCCESS AddPointer has been processed. Either an ACPI
|
||||||
|
table different from RSDT and XSDT has been
|
||||||
|
installed (reflected by InstalledKey and
|
||||||
|
NumInstalled), or RSDT or XSDT has been
|
||||||
|
identified but not installed, or the fw_cfg
|
||||||
|
blob pointed-into by AddPointer has been
|
||||||
|
marked as hosting something else than just
|
||||||
|
direct ACPI table contents.
|
||||||
|
|
||||||
|
@return Error codes returned by
|
||||||
|
AcpiProtocol->InstallAcpiTable().
|
||||||
|
**/
|
||||||
|
STATIC
|
||||||
|
EFI_STATUS
|
||||||
|
EFIAPI
|
||||||
|
Process2ndPassCmdAddPointer (
|
||||||
|
IN CONST QEMU_LOADER_ADD_POINTER *AddPointer,
|
||||||
|
IN CONST ORDERED_COLLECTION *Tracker,
|
||||||
|
IN EFI_ACPI_TABLE_PROTOCOL *AcpiProtocol,
|
||||||
|
IN OUT UINTN InstalledKey[INSTALLED_TABLES_MAX],
|
||||||
|
IN OUT INT32 *NumInstalled
|
||||||
|
)
|
||||||
|
{
|
||||||
|
CONST ORDERED_COLLECTION_ENTRY *TrackerEntry;
|
||||||
|
CONST ORDERED_COLLECTION_ENTRY *TrackerEntry2;
|
||||||
|
CONST BLOB *Blob;
|
||||||
|
BLOB *Blob2;
|
||||||
|
CONST UINT8 *PointerField;
|
||||||
|
UINT64 PointerValue;
|
||||||
|
UINTN Blob2Remaining;
|
||||||
|
UINTN TableSize;
|
||||||
|
CONST EFI_ACPI_1_0_FIRMWARE_ACPI_CONTROL_STRUCTURE *Facs;
|
||||||
|
CONST EFI_ACPI_DESCRIPTION_HEADER *Header;
|
||||||
|
EFI_STATUS Status;
|
||||||
|
|
||||||
|
if (*NumInstalled < 0 || *NumInstalled > INSTALLED_TABLES_MAX) {
|
||||||
|
return EFI_INVALID_PARAMETER;
|
||||||
|
}
|
||||||
|
|
||||||
|
TrackerEntry = OrderedCollectionFind (Tracker, AddPointer->PointerFile);
|
||||||
|
TrackerEntry2 = OrderedCollectionFind (Tracker, AddPointer->PointeeFile);
|
||||||
|
Blob = OrderedCollectionUserStruct (TrackerEntry);
|
||||||
|
Blob2 = OrderedCollectionUserStruct (TrackerEntry2);
|
||||||
|
PointerField = Blob->Base + AddPointer->PointerOffset;
|
||||||
|
PointerValue = 0;
|
||||||
|
CopyMem (&PointerValue, PointerField, AddPointer->PointerSize);
|
||||||
|
|
||||||
|
//
|
||||||
|
// We assert that PointerValue falls inside Blob2's contents. This is ensured
|
||||||
|
// by the Blob2->Size check and later checks in ProcessCmdAddPointer().
|
||||||
|
//
|
||||||
|
Blob2Remaining = (UINTN)Blob2->Base;
|
||||||
|
ASSERT(PointerValue >= Blob2Remaining);
|
||||||
|
Blob2Remaining += Blob2->Size;
|
||||||
|
ASSERT (PointerValue < Blob2Remaining);
|
||||||
|
|
||||||
|
Blob2Remaining -= (UINTN) PointerValue;
|
||||||
|
DEBUG ((EFI_D_VERBOSE, "%a: checking for ACPI header in \"%a\" at 0x%Lx "
|
||||||
|
"(remaining: 0x%Lx): ", __FUNCTION__, AddPointer->PointeeFile,
|
||||||
|
PointerValue, (UINT64)Blob2Remaining));
|
||||||
|
|
||||||
|
TableSize = 0;
|
||||||
|
|
||||||
|
//
|
||||||
|
// To make our job simple, the FACS has a custom header. Sigh.
|
||||||
|
//
|
||||||
|
if (sizeof *Facs <= Blob2Remaining) {
|
||||||
|
Facs = (EFI_ACPI_1_0_FIRMWARE_ACPI_CONTROL_STRUCTURE *)(UINTN)PointerValue;
|
||||||
|
|
||||||
|
if (Facs->Length >= sizeof *Facs &&
|
||||||
|
Facs->Length <= Blob2Remaining &&
|
||||||
|
Facs->Signature ==
|
||||||
|
EFI_ACPI_1_0_FIRMWARE_ACPI_CONTROL_STRUCTURE_SIGNATURE) {
|
||||||
|
DEBUG ((EFI_D_VERBOSE, "found \"%-4.4a\" size 0x%x\n",
|
||||||
|
(CONST CHAR8 *)&Facs->Signature, Facs->Length));
|
||||||
|
TableSize = Facs->Length;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
//
|
||||||
|
// check for the uniform tables
|
||||||
|
//
|
||||||
|
if (TableSize == 0 && sizeof *Header <= Blob2Remaining) {
|
||||||
|
Header = (EFI_ACPI_DESCRIPTION_HEADER *)(UINTN)PointerValue;
|
||||||
|
|
||||||
|
if (Header->Length >= sizeof *Header &&
|
||||||
|
Header->Length <= Blob2Remaining &&
|
||||||
|
CalculateSum8 ((CONST UINT8 *)Header, Header->Length) == 0) {
|
||||||
|
//
|
||||||
|
// This looks very much like an ACPI table from QEMU:
|
||||||
|
// - Length field consistent with both ACPI and containing blob size
|
||||||
|
// - checksum is correct
|
||||||
|
//
|
||||||
|
DEBUG ((EFI_D_VERBOSE, "found \"%-4.4a\" size 0x%x\n",
|
||||||
|
(CONST CHAR8 *)&Header->Signature, Header->Length));
|
||||||
|
TableSize = Header->Length;
|
||||||
|
|
||||||
|
//
|
||||||
|
// Skip RSDT and XSDT because those are handled by
|
||||||
|
// EFI_ACPI_TABLE_PROTOCOL automatically.
|
||||||
|
if (Header->Signature ==
|
||||||
|
EFI_ACPI_1_0_ROOT_SYSTEM_DESCRIPTION_TABLE_SIGNATURE ||
|
||||||
|
Header->Signature ==
|
||||||
|
EFI_ACPI_2_0_EXTENDED_SYSTEM_DESCRIPTION_TABLE_SIGNATURE) {
|
||||||
|
return EFI_SUCCESS;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
if (TableSize == 0) {
|
||||||
|
DEBUG ((EFI_D_VERBOSE, "not found; marking fw_cfg blob as opaque\n"));
|
||||||
|
Blob2->HostsOnlyTableData = FALSE;
|
||||||
|
return EFI_SUCCESS;
|
||||||
|
}
|
||||||
|
|
||||||
|
if (*NumInstalled == INSTALLED_TABLES_MAX) {
|
||||||
|
DEBUG ((EFI_D_ERROR, "%a: can't install more than %d tables\n",
|
||||||
|
__FUNCTION__, INSTALLED_TABLES_MAX));
|
||||||
|
return EFI_OUT_OF_RESOURCES;
|
||||||
|
}
|
||||||
|
|
||||||
|
Status = AcpiProtocol->InstallAcpiTable (AcpiProtocol,
|
||||||
|
(VOID *)(UINTN)PointerValue, TableSize,
|
||||||
|
&InstalledKey[*NumInstalled]);
|
||||||
|
if (EFI_ERROR (Status)) {
|
||||||
|
DEBUG ((EFI_D_ERROR, "%a: InstallAcpiTable(): %r\n", __FUNCTION__,
|
||||||
|
Status));
|
||||||
|
return Status;
|
||||||
|
}
|
||||||
|
++*NumInstalled;
|
||||||
|
return EFI_SUCCESS;
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
/**
|
||||||
|
Download, process, and install ACPI table data from the QEMU loader
|
||||||
|
interface.
|
||||||
|
|
||||||
|
@param[in] AcpiProtocol The ACPI table protocol used to install tables.
|
||||||
|
|
||||||
|
@retval EFI_UNSUPPORTED Firmware configuration is unavailable, or QEMU
|
||||||
|
loader command with unsupported parameters
|
||||||
|
has been found.
|
||||||
|
|
||||||
|
@retval EFI_NOT_FOUND The host doesn't export the required fw_cfg
|
||||||
|
files.
|
||||||
|
|
||||||
|
@retval EFI_OUT_OF_RESOURCES Memory allocation failed, or more than
|
||||||
|
INSTALLED_TABLES_MAX tables found.
|
||||||
|
|
||||||
|
@retval EFI_PROTOCOL_ERROR Found invalid fw_cfg contents.
|
||||||
|
|
||||||
|
@return Status codes returned by
|
||||||
|
AcpiProtocol->InstallAcpiTable().
|
||||||
|
|
||||||
|
**/
|
||||||
|
EFI_STATUS
|
||||||
|
EFIAPI
|
||||||
|
InstallAllQemuLinkedTables (
|
||||||
|
IN EFI_ACPI_TABLE_PROTOCOL *AcpiProtocol
|
||||||
|
)
|
||||||
|
{
|
||||||
|
EFI_STATUS Status;
|
||||||
|
FIRMWARE_CONFIG_ITEM FwCfgItem;
|
||||||
|
UINTN FwCfgSize;
|
||||||
|
QEMU_LOADER_ENTRY *LoaderStart;
|
||||||
|
CONST QEMU_LOADER_ENTRY *LoaderEntry, *LoaderEnd;
|
||||||
|
ORDERED_COLLECTION *Tracker;
|
||||||
|
UINTN *InstalledKey;
|
||||||
|
INT32 Installed;
|
||||||
|
ORDERED_COLLECTION_ENTRY *TrackerEntry, *TrackerEntry2;
|
||||||
|
|
||||||
|
Status = QemuFwCfgFindFile ("etc/table-loader", &FwCfgItem, &FwCfgSize);
|
||||||
|
if (EFI_ERROR (Status)) {
|
||||||
|
return Status;
|
||||||
|
}
|
||||||
|
if (FwCfgSize % sizeof *LoaderEntry != 0) {
|
||||||
|
DEBUG ((EFI_D_ERROR, "%a: \"etc/table-loader\" has invalid size 0x%Lx\n",
|
||||||
|
__FUNCTION__, (UINT64)FwCfgSize));
|
||||||
|
return EFI_PROTOCOL_ERROR;
|
||||||
|
}
|
||||||
|
|
||||||
|
LoaderStart = AllocatePool (FwCfgSize);
|
||||||
|
if (LoaderStart == NULL) {
|
||||||
|
return EFI_OUT_OF_RESOURCES;
|
||||||
|
}
|
||||||
|
QemuFwCfgSelectItem (FwCfgItem);
|
||||||
|
QemuFwCfgReadBytes (FwCfgSize, LoaderStart);
|
||||||
|
LoaderEnd = LoaderStart + FwCfgSize / sizeof *LoaderEntry;
|
||||||
|
|
||||||
|
Tracker = OrderedCollectionInit (BlobCompare, BlobKeyCompare);
|
||||||
|
if (Tracker == NULL) {
|
||||||
|
Status = EFI_OUT_OF_RESOURCES;
|
||||||
|
goto FreeLoader;
|
||||||
|
}
|
||||||
|
|
||||||
|
//
|
||||||
|
// first pass: process the commands
|
||||||
|
//
|
||||||
|
for (LoaderEntry = LoaderStart; LoaderEntry < LoaderEnd; ++LoaderEntry) {
|
||||||
|
switch (LoaderEntry->Type) {
|
||||||
|
case QemuLoaderCmdAllocate:
|
||||||
|
Status = ProcessCmdAllocate (&LoaderEntry->Command.Allocate, Tracker);
|
||||||
|
break;
|
||||||
|
|
||||||
|
case QemuLoaderCmdAddPointer:
|
||||||
|
Status = ProcessCmdAddPointer (&LoaderEntry->Command.AddPointer,
|
||||||
|
Tracker);
|
||||||
|
break;
|
||||||
|
|
||||||
|
case QemuLoaderCmdAddChecksum:
|
||||||
|
Status = ProcessCmdAddChecksum (&LoaderEntry->Command.AddChecksum,
|
||||||
|
Tracker);
|
||||||
|
break;
|
||||||
|
|
||||||
|
default:
|
||||||
|
DEBUG ((EFI_D_VERBOSE, "%a: unknown loader command: 0x%x\n",
|
||||||
|
__FUNCTION__, LoaderEntry->Type));
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
|
||||||
|
if (EFI_ERROR (Status)) {
|
||||||
|
goto FreeTracker;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
InstalledKey = AllocatePool (INSTALLED_TABLES_MAX * sizeof *InstalledKey);
|
||||||
|
if (InstalledKey == NULL) {
|
||||||
|
Status = EFI_OUT_OF_RESOURCES;
|
||||||
|
goto FreeTracker;
|
||||||
|
}
|
||||||
|
|
||||||
|
//
|
||||||
|
// second pass: identify and install ACPI tables
|
||||||
|
//
|
||||||
|
Installed = 0;
|
||||||
|
for (LoaderEntry = LoaderStart; LoaderEntry < LoaderEnd; ++LoaderEntry) {
|
||||||
|
if (LoaderEntry->Type == QemuLoaderCmdAddPointer) {
|
||||||
|
Status = Process2ndPassCmdAddPointer (&LoaderEntry->Command.AddPointer,
|
||||||
|
Tracker, AcpiProtocol, InstalledKey, &Installed);
|
||||||
|
if (EFI_ERROR (Status)) {
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
if (EFI_ERROR (Status)) {
|
||||||
|
//
|
||||||
|
// roll back partial installation
|
||||||
|
//
|
||||||
|
while (Installed > 0) {
|
||||||
|
--Installed;
|
||||||
|
AcpiProtocol->UninstallAcpiTable (AcpiProtocol, InstalledKey[Installed]);
|
||||||
|
}
|
||||||
|
} else {
|
||||||
|
DEBUG ((EFI_D_INFO, "%a: installed %d tables\n", __FUNCTION__, Installed));
|
||||||
|
}
|
||||||
|
|
||||||
|
FreePool (InstalledKey);
|
||||||
|
|
||||||
|
FreeTracker:
|
||||||
|
//
|
||||||
|
// Tear down the tracker infrastructure. Each fw_cfg blob will be left in
|
||||||
|
// place only if we're exiting with success and the blob hosts data that is
|
||||||
|
// not directly part of some ACPI table.
|
||||||
|
//
|
||||||
|
for (TrackerEntry = OrderedCollectionMin (Tracker); TrackerEntry != NULL;
|
||||||
|
TrackerEntry = TrackerEntry2) {
|
||||||
|
VOID *UserStruct;
|
||||||
|
BLOB *Blob;
|
||||||
|
|
||||||
|
TrackerEntry2 = OrderedCollectionNext (TrackerEntry);
|
||||||
|
OrderedCollectionDelete (Tracker, TrackerEntry, &UserStruct);
|
||||||
|
Blob = UserStruct;
|
||||||
|
|
||||||
|
if (EFI_ERROR (Status) || Blob->HostsOnlyTableData) {
|
||||||
|
DEBUG ((EFI_D_VERBOSE, "%a: freeing \"%a\"\n", __FUNCTION__,
|
||||||
|
Blob->File));
|
||||||
|
gBS->FreePages ((UINTN)Blob->Base, EFI_SIZE_TO_PAGES (Blob->Size));
|
||||||
|
}
|
||||||
|
FreePool (Blob);
|
||||||
|
}
|
||||||
|
OrderedCollectionUninit (Tracker);
|
||||||
|
|
||||||
|
FreeLoader:
|
||||||
|
FreePool (LoaderStart);
|
||||||
|
|
||||||
|
return Status;
|
||||||
|
}
|
||||||
Loading…
Reference in New Issue