TableKey\r
);\r
}\r
-\r
-\r
-//\r
-// The user structure for the ordered collection that will track the fw_cfg\r
-// blobs under processing.\r
-//\r
-typedef struct {\r
- UINT8 File[QEMU_LOADER_FNAME_SIZE]; // NUL-terminated name of the fw_cfg\r
- // blob. This is the ordering / search\r
- // key.\r
- UINTN Size; // The number of bytes in this blob.\r
- UINT8 *Base; // Pointer to the blob data.\r
- BOOLEAN HostsOnlyTableData; // TRUE iff the blob has been found to\r
- // only contain data that is directly\r
- // part of ACPI tables.\r
-} BLOB;\r
-\r
-\r
-/**\r
- Compare a standalone key against a user structure containing an embedded key.\r
-\r
- @param[in] StandaloneKey Pointer to the bare key.\r
-\r
- @param[in] UserStruct Pointer to the user structure with the embedded\r
- key.\r
-\r
- @retval <0 If StandaloneKey compares less than UserStruct's key.\r
-\r
- @retval 0 If StandaloneKey compares equal to UserStruct's key.\r
-\r
- @retval >0 If StandaloneKey compares greater than UserStruct's key.\r
-**/\r
-STATIC\r
-INTN\r
-EFIAPI\r
-BlobKeyCompare (\r
- IN CONST VOID *StandaloneKey,\r
- IN CONST VOID *UserStruct\r
- )\r
-{\r
- CONST BLOB *Blob;\r
-\r
- Blob = UserStruct;\r
- return AsciiStrCmp (StandaloneKey, (CONST CHAR8 *)Blob->File);\r
-}\r
-\r
-\r
-/**\r
- Comparator function for two user structures.\r
-\r
- @param[in] UserStruct1 Pointer to the first user structure.\r
-\r
- @param[in] UserStruct2 Pointer to the second user structure.\r
-\r
- @retval <0 If UserStruct1 compares less than UserStruct2.\r
-\r
- @retval 0 If UserStruct1 compares equal to UserStruct2.\r
-\r
- @retval >0 If UserStruct1 compares greater than UserStruct2.\r
-**/\r
-STATIC\r
-INTN\r
-EFIAPI\r
-BlobCompare (\r
- IN CONST VOID *UserStruct1,\r
- IN CONST VOID *UserStruct2\r
- )\r
-{\r
- CONST BLOB *Blob1;\r
-\r
- Blob1 = UserStruct1;\r
- return BlobKeyCompare (Blob1->File, UserStruct2);\r
-}\r
-\r
-\r
-/**\r
- Process a QEMU_LOADER_ALLOCATE command.\r
-\r
- @param[in] Allocate The QEMU_LOADER_ALLOCATE command to process.\r
-\r
- @param[in,out] Tracker The ORDERED_COLLECTION tracking the BLOB user\r
- structures created thus far.\r
-\r
- @retval EFI_SUCCESS An area of whole AcpiNVS pages has been\r
- allocated for the blob contents, and the\r
- contents have been saved. A BLOB object (user\r
- structure) has been allocated from pool memory,\r
- referencing the blob contents. The BLOB user\r
- structure has been linked into Tracker.\r
-\r
- @retval EFI_PROTOCOL_ERROR Malformed fw_cfg file name has been found in\r
- Allocate, or the Allocate command references a\r
- file that is already known by Tracker.\r
-\r
- @retval EFI_UNSUPPORTED Unsupported alignment request has been found in\r
- Allocate.\r
-\r
- @retval EFI_OUT_OF_RESOURCES Pool allocation failed.\r
-\r
- @return Error codes from QemuFwCfgFindFile() and\r
- gBS->AllocatePages().\r
-**/\r
-STATIC\r
-EFI_STATUS\r
-EFIAPI\r
-ProcessCmdAllocate (\r
- IN CONST QEMU_LOADER_ALLOCATE *Allocate,\r
- IN OUT ORDERED_COLLECTION *Tracker\r
- )\r
-{\r
- FIRMWARE_CONFIG_ITEM FwCfgItem;\r
- UINTN FwCfgSize;\r
- EFI_STATUS Status;\r
- UINTN NumPages;\r
- EFI_PHYSICAL_ADDRESS Address;\r
- BLOB *Blob;\r
-\r
- if (Allocate->File[QEMU_LOADER_FNAME_SIZE - 1] != '\0') {\r
- DEBUG ((EFI_D_ERROR, "%a: malformed file name\n", __FUNCTION__));\r
- return EFI_PROTOCOL_ERROR;\r
- }\r
-\r
- if (Allocate->Alignment > EFI_PAGE_SIZE) {\r
- DEBUG ((EFI_D_ERROR, "%a: unsupported alignment 0x%x\n", __FUNCTION__,\r
- Allocate->Alignment));\r
- return EFI_UNSUPPORTED;\r
- }\r
-\r
- Status = QemuFwCfgFindFile ((CHAR8 *)Allocate->File, &FwCfgItem, &FwCfgSize);\r
- if (EFI_ERROR (Status)) {\r
- DEBUG ((EFI_D_ERROR, "%a: QemuFwCfgFindFile(\"%a\"): %r\n", __FUNCTION__,\r
- Allocate->File, Status));\r
- return Status;\r
- }\r
-\r
- NumPages = EFI_SIZE_TO_PAGES (FwCfgSize);\r
- Address = 0xFFFFFFFF;\r
- Status = gBS->AllocatePages (AllocateMaxAddress, EfiACPIMemoryNVS, NumPages,\r
- &Address);\r
- if (EFI_ERROR (Status)) {\r
- return Status;\r
- }\r
-\r
- Blob = AllocatePool (sizeof *Blob);\r
- if (Blob == NULL) {\r
- Status = EFI_OUT_OF_RESOURCES;\r
- goto FreePages;\r
- }\r
- CopyMem (Blob->File, Allocate->File, QEMU_LOADER_FNAME_SIZE);\r
- Blob->Size = FwCfgSize;\r
- Blob->Base = (VOID *)(UINTN)Address;\r
- Blob->HostsOnlyTableData = TRUE;\r
-\r
- Status = OrderedCollectionInsert (Tracker, NULL, Blob);\r
- if (Status == RETURN_ALREADY_STARTED) {\r
- DEBUG ((EFI_D_ERROR, "%a: duplicated file \"%a\"\n", __FUNCTION__,\r
- Allocate->File));\r
- Status = EFI_PROTOCOL_ERROR;\r
- }\r
- if (EFI_ERROR (Status)) {\r
- goto FreeBlob;\r
- }\r
-\r
- QemuFwCfgSelectItem (FwCfgItem);\r
- QemuFwCfgReadBytes (FwCfgSize, Blob->Base);\r
- ZeroMem (Blob->Base + Blob->Size, EFI_PAGES_TO_SIZE (NumPages) - Blob->Size);\r
-\r
- DEBUG ((EFI_D_VERBOSE, "%a: File=\"%a\" Alignment=0x%x Zone=%d Size=0x%Lx "\r
- "Address=0x%Lx\n", __FUNCTION__, Allocate->File, Allocate->Alignment,\r
- Allocate->Zone, (UINT64)Blob->Size, (UINT64)(UINTN)Blob->Base));\r
- return EFI_SUCCESS;\r
-\r
-FreeBlob:\r
- FreePool (Blob);\r
-\r
-FreePages:\r
- gBS->FreePages (Address, NumPages);\r
-\r
- return Status;\r
-}\r
-\r
-\r
-/**\r
- Process a QEMU_LOADER_ADD_POINTER command.\r
-\r
- @param[in] AddPointer The QEMU_LOADER_ADD_POINTER command to process.\r
-\r
- @param[in] Tracker The ORDERED_COLLECTION tracking the BLOB user\r
- structures created thus far.\r
-\r
- @retval EFI_PROTOCOL_ERROR Malformed fw_cfg file name(s) have been found in\r
- AddPointer, or the AddPointer command references\r
- a file unknown to Tracker, or the pointer to\r
- relocate has invalid location, size, or value, or\r
- the relocated pointer value is not representable\r
- in the given pointer size.\r
-\r
- @retval EFI_SUCCESS The pointer field inside the pointer blob has\r
- been relocated.\r
-**/\r
-STATIC\r
-EFI_STATUS\r
-EFIAPI\r
-ProcessCmdAddPointer (\r
- IN CONST QEMU_LOADER_ADD_POINTER *AddPointer,\r
- IN CONST ORDERED_COLLECTION *Tracker\r
- )\r
-{\r
- ORDERED_COLLECTION_ENTRY *TrackerEntry, *TrackerEntry2;\r
- BLOB *Blob, *Blob2;\r
- UINT8 *PointerField;\r
- UINT64 PointerValue;\r
-\r
- if (AddPointer->PointerFile[QEMU_LOADER_FNAME_SIZE - 1] != '\0' ||\r
- AddPointer->PointeeFile[QEMU_LOADER_FNAME_SIZE - 1] != '\0') {\r
- DEBUG ((EFI_D_ERROR, "%a: malformed file name\n", __FUNCTION__));\r
- return EFI_PROTOCOL_ERROR;\r
- }\r
-\r
- TrackerEntry = OrderedCollectionFind (Tracker, AddPointer->PointerFile);\r
- TrackerEntry2 = OrderedCollectionFind (Tracker, AddPointer->PointeeFile);\r
- if (TrackerEntry == NULL || TrackerEntry2 == NULL) {\r
- DEBUG ((EFI_D_ERROR, "%a: invalid blob reference(s) \"%a\" / \"%a\"\n",\r
- __FUNCTION__, AddPointer->PointerFile, AddPointer->PointeeFile));\r
- return EFI_PROTOCOL_ERROR;\r
- }\r
-\r
- Blob = OrderedCollectionUserStruct (TrackerEntry);\r
- Blob2 = OrderedCollectionUserStruct (TrackerEntry2);\r
- if ((AddPointer->PointerSize != 1 && AddPointer->PointerSize != 2 &&\r
- AddPointer->PointerSize != 4 && AddPointer->PointerSize != 8) ||\r
- Blob->Size < AddPointer->PointerSize ||\r
- Blob->Size - AddPointer->PointerSize < AddPointer->PointerOffset) {\r
- DEBUG ((EFI_D_ERROR, "%a: invalid pointer location or size in \"%a\"\n",\r
- __FUNCTION__, AddPointer->PointerFile));\r
- return EFI_PROTOCOL_ERROR;\r
- }\r
-\r
- PointerField = Blob->Base + AddPointer->PointerOffset;\r
- PointerValue = 0;\r
- CopyMem (&PointerValue, PointerField, AddPointer->PointerSize);\r
- if (PointerValue >= Blob2->Size) {\r
- DEBUG ((EFI_D_ERROR, "%a: invalid pointer value in \"%a\"\n", __FUNCTION__,\r
- AddPointer->PointerFile));\r
- return EFI_PROTOCOL_ERROR;\r
- }\r
-\r
- //\r
- // The memory allocation system ensures that the address of the byte past the\r
- // last byte of any allocated object is expressible (no wraparound).\r
- //\r
- ASSERT ((UINTN)Blob2->Base <= MAX_ADDRESS - Blob2->Size);\r
-\r
- PointerValue += (UINT64)(UINTN)Blob2->Base;\r
- if (RShiftU64 (\r
- RShiftU64 (PointerValue, AddPointer->PointerSize * 8 - 1), 1) != 0) {\r
- DEBUG ((EFI_D_ERROR, "%a: relocated pointer value unrepresentable in "\r
- "\"%a\"\n", __FUNCTION__, AddPointer->PointerFile));\r
- return EFI_PROTOCOL_ERROR;\r
- }\r
-\r
- CopyMem (PointerField, &PointerValue, AddPointer->PointerSize);\r
-\r
- DEBUG ((EFI_D_VERBOSE, "%a: PointerFile=\"%a\" PointeeFile=\"%a\" "\r
- "PointerOffset=0x%x PointerSize=%d\n", __FUNCTION__,\r
- AddPointer->PointerFile, AddPointer->PointeeFile,\r
- AddPointer->PointerOffset, AddPointer->PointerSize));\r
- return EFI_SUCCESS;\r
-}\r
-\r
-\r
-/**\r
- Process a QEMU_LOADER_ADD_CHECKSUM command.\r
-\r
- @param[in] AddChecksum The QEMU_LOADER_ADD_CHECKSUM command to process.\r
-\r
- @param[in] Tracker The ORDERED_COLLECTION tracking the BLOB user\r
- structures created thus far.\r
-\r
- @retval EFI_PROTOCOL_ERROR Malformed fw_cfg file name has been found in\r
- AddChecksum, or the AddChecksum command\r
- references a file unknown to Tracker, or the\r
- range to checksum is invalid.\r
-\r
- @retval EFI_SUCCESS The requested range has been checksummed.\r
-**/\r
-STATIC\r
-EFI_STATUS\r
-EFIAPI\r
-ProcessCmdAddChecksum (\r
- IN CONST QEMU_LOADER_ADD_CHECKSUM *AddChecksum,\r
- IN CONST ORDERED_COLLECTION *Tracker\r
- )\r
-{\r
- ORDERED_COLLECTION_ENTRY *TrackerEntry;\r
- BLOB *Blob;\r
-\r
- if (AddChecksum->File[QEMU_LOADER_FNAME_SIZE - 1] != '\0') {\r
- DEBUG ((EFI_D_ERROR, "%a: malformed file name\n", __FUNCTION__));\r
- return EFI_PROTOCOL_ERROR;\r
- }\r
-\r
- TrackerEntry = OrderedCollectionFind (Tracker, AddChecksum->File);\r
- if (TrackerEntry == NULL) {\r
- DEBUG ((EFI_D_ERROR, "%a: invalid blob reference \"%a\"\n", __FUNCTION__,\r
- AddChecksum->File));\r
- return EFI_PROTOCOL_ERROR;\r
- }\r
-\r
- Blob = OrderedCollectionUserStruct (TrackerEntry);\r
- if (Blob->Size <= AddChecksum->ResultOffset ||\r
- Blob->Size < AddChecksum->Length ||\r
- Blob->Size - AddChecksum->Length < AddChecksum->Start) {\r
- DEBUG ((EFI_D_ERROR, "%a: invalid checksum range in \"%a\"\n",\r
- __FUNCTION__, AddChecksum->File));\r
- return EFI_PROTOCOL_ERROR;\r
- }\r
-\r
- Blob->Base[AddChecksum->ResultOffset] = CalculateCheckSum8 (\r
- Blob->Base + AddChecksum->Start,\r
- AddChecksum->Length\r
- );\r
- DEBUG ((EFI_D_VERBOSE, "%a: File=\"%a\" ResultOffset=0x%x Start=0x%x "\r
- "Length=0x%x\n", __FUNCTION__, AddChecksum->File,\r
- AddChecksum->ResultOffset, AddChecksum->Start, AddChecksum->Length));\r
- return EFI_SUCCESS;\r
-}\r
-\r
-\r
-//\r
-// We'll be saving the keys of installed tables so that we can roll them back\r
-// in case of failure. 128 tables should be enough for anyone (TM).\r
-//\r
-#define INSTALLED_TABLES_MAX 128\r
-\r
-/**\r
- Process a QEMU_LOADER_ADD_POINTER command in order to see if its target byte\r
- array is an ACPI table, and if so, install it.\r
-\r
- This function assumes that the entire QEMU linker/loader command file has\r
- been processed successfuly in a prior first pass.\r
-\r
- @param[in] AddPointer The QEMU_LOADER_ADD_POINTER command to process.\r
-\r
- @param[in] Tracker The ORDERED_COLLECTION tracking the BLOB user\r
- structures.\r
-\r
- @param[in] AcpiProtocol The ACPI table protocol used to install tables.\r
-\r
- @param[in,out] InstalledKey On input, an array of INSTALLED_TABLES_MAX UINTN\r
- elements, allocated by the caller. On output,\r
- the function will have stored (appended) the\r
- AcpiProtocol-internal key of the ACPI table that\r
- the function has installed, if the AddPointer\r
- command identified an ACPI table that is\r
- different from RSDT and XSDT.\r
-\r
- @param[in,out] NumInstalled On input, the number of entries already used in\r
- InstalledKey; it must be in [0,\r
- INSTALLED_TABLES_MAX] inclusive. On output, the\r
- parameter is incremented if the AddPointer\r
- command identified an ACPI table that is\r
- different from RSDT and XSDT.\r
-\r
- @retval EFI_INVALID_PARAMETER NumInstalled was outside the allowed range on\r
- input.\r
-\r
- @retval EFI_OUT_OF_RESOURCES The AddPointer command identified an ACPI\r
- table different from RSDT and XSDT, but there\r
- was no more room in InstalledKey.\r
-\r
- @retval EFI_SUCCESS AddPointer has been processed. Either an ACPI\r
- table different from RSDT and XSDT has been\r
- installed (reflected by InstalledKey and\r
- NumInstalled), or RSDT or XSDT has been\r
- identified but not installed, or the fw_cfg\r
- blob pointed-into by AddPointer has been\r
- marked as hosting something else than just\r
- direct ACPI table contents.\r
-\r
- @return Error codes returned by\r
- AcpiProtocol->InstallAcpiTable().\r
-**/\r
-STATIC\r
-EFI_STATUS\r
-EFIAPI\r
-Process2ndPassCmdAddPointer (\r
- IN CONST QEMU_LOADER_ADD_POINTER *AddPointer,\r
- IN CONST ORDERED_COLLECTION *Tracker,\r
- IN EFI_ACPI_TABLE_PROTOCOL *AcpiProtocol,\r
- IN OUT UINTN InstalledKey[INSTALLED_TABLES_MAX],\r
- IN OUT INT32 *NumInstalled\r
- )\r
-{\r
- CONST ORDERED_COLLECTION_ENTRY *TrackerEntry;\r
- CONST ORDERED_COLLECTION_ENTRY *TrackerEntry2;\r
- CONST BLOB *Blob;\r
- BLOB *Blob2;\r
- CONST UINT8 *PointerField;\r
- UINT64 PointerValue;\r
- UINTN Blob2Remaining;\r
- UINTN TableSize;\r
- CONST EFI_ACPI_1_0_FIRMWARE_ACPI_CONTROL_STRUCTURE *Facs;\r
- CONST EFI_ACPI_DESCRIPTION_HEADER *Header;\r
- EFI_STATUS Status;\r
-\r
- if (*NumInstalled < 0 || *NumInstalled > INSTALLED_TABLES_MAX) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
-\r
- TrackerEntry = OrderedCollectionFind (Tracker, AddPointer->PointerFile);\r
- TrackerEntry2 = OrderedCollectionFind (Tracker, AddPointer->PointeeFile);\r
- Blob = OrderedCollectionUserStruct (TrackerEntry);\r
- Blob2 = OrderedCollectionUserStruct (TrackerEntry2);\r
- PointerField = Blob->Base + AddPointer->PointerOffset;\r
- PointerValue = 0;\r
- CopyMem (&PointerValue, PointerField, AddPointer->PointerSize);\r
-\r
- //\r
- // We assert that PointerValue falls inside Blob2's contents. This is ensured\r
- // by the Blob2->Size check and later checks in ProcessCmdAddPointer().\r
- //\r
- Blob2Remaining = (UINTN)Blob2->Base;\r
- ASSERT(PointerValue >= Blob2Remaining);\r
- Blob2Remaining += Blob2->Size;\r
- ASSERT (PointerValue < Blob2Remaining);\r
-\r
- Blob2Remaining -= (UINTN) PointerValue;\r
- DEBUG ((EFI_D_VERBOSE, "%a: checking for ACPI header in \"%a\" at 0x%Lx "\r
- "(remaining: 0x%Lx): ", __FUNCTION__, AddPointer->PointeeFile,\r
- PointerValue, (UINT64)Blob2Remaining));\r
-\r
- TableSize = 0;\r
-\r
- //\r
- // To make our job simple, the FACS has a custom header. Sigh.\r
- //\r
- if (sizeof *Facs <= Blob2Remaining) {\r
- Facs = (EFI_ACPI_1_0_FIRMWARE_ACPI_CONTROL_STRUCTURE *)(UINTN)PointerValue;\r
-\r
- if (Facs->Length >= sizeof *Facs &&\r
- Facs->Length <= Blob2Remaining &&\r
- Facs->Signature ==\r
- EFI_ACPI_1_0_FIRMWARE_ACPI_CONTROL_STRUCTURE_SIGNATURE) {\r
- DEBUG ((EFI_D_VERBOSE, "found \"%-4.4a\" size 0x%x\n",\r
- (CONST CHAR8 *)&Facs->Signature, Facs->Length));\r
- TableSize = Facs->Length;\r
- }\r
- }\r
-\r
- //\r
- // check for the uniform tables\r
- //\r
- if (TableSize == 0 && sizeof *Header <= Blob2Remaining) {\r
- Header = (EFI_ACPI_DESCRIPTION_HEADER *)(UINTN)PointerValue;\r
-\r
- if (Header->Length >= sizeof *Header &&\r
- Header->Length <= Blob2Remaining &&\r
- CalculateSum8 ((CONST UINT8 *)Header, Header->Length) == 0) {\r
- //\r
- // This looks very much like an ACPI table from QEMU:\r
- // - Length field consistent with both ACPI and containing blob size\r
- // - checksum is correct\r
- //\r
- DEBUG ((EFI_D_VERBOSE, "found \"%-4.4a\" size 0x%x\n",\r
- (CONST CHAR8 *)&Header->Signature, Header->Length));\r
- TableSize = Header->Length;\r
-\r
- //\r
- // Skip RSDT and XSDT because those are handled by\r
- // EFI_ACPI_TABLE_PROTOCOL automatically.\r
- if (Header->Signature ==\r
- EFI_ACPI_1_0_ROOT_SYSTEM_DESCRIPTION_TABLE_SIGNATURE ||\r
- Header->Signature ==\r
- EFI_ACPI_2_0_EXTENDED_SYSTEM_DESCRIPTION_TABLE_SIGNATURE) {\r
- return EFI_SUCCESS;\r
- }\r
- }\r
- }\r
-\r
- if (TableSize == 0) {\r
- DEBUG ((EFI_D_VERBOSE, "not found; marking fw_cfg blob as opaque\n"));\r
- Blob2->HostsOnlyTableData = FALSE;\r
- return EFI_SUCCESS;\r
- }\r
-\r
- if (*NumInstalled == INSTALLED_TABLES_MAX) {\r
- DEBUG ((EFI_D_ERROR, "%a: can't install more than %d tables\n",\r
- __FUNCTION__, INSTALLED_TABLES_MAX));\r
- return EFI_OUT_OF_RESOURCES;\r
- }\r
-\r
- Status = AcpiProtocol->InstallAcpiTable (AcpiProtocol,\r
- (VOID *)(UINTN)PointerValue, TableSize,\r
- &InstalledKey[*NumInstalled]);\r
- if (EFI_ERROR (Status)) {\r
- DEBUG ((EFI_D_ERROR, "%a: InstallAcpiTable(): %r\n", __FUNCTION__,\r
- Status));\r
- return Status;\r
- }\r
- ++*NumInstalled;\r
- return EFI_SUCCESS;\r
-}\r
-\r
-\r
-/**\r
- Download, process, and install ACPI table data from the QEMU loader\r
- interface.\r
-\r
- @param[in] AcpiProtocol The ACPI table protocol used to install tables.\r
-\r
- @retval EFI_UNSUPPORTED Firmware configuration is unavailable, or QEMU\r
- loader command with unsupported parameters\r
- has been found.\r
-\r
- @retval EFI_NOT_FOUND The host doesn't export the required fw_cfg\r
- files.\r
-\r
- @retval EFI_OUT_OF_RESOURCES Memory allocation failed, or more than\r
- INSTALLED_TABLES_MAX tables found.\r
-\r
- @retval EFI_PROTOCOL_ERROR Found invalid fw_cfg contents.\r
-\r
- @return Status codes returned by\r
- AcpiProtocol->InstallAcpiTable().\r
-\r
-**/\r
-EFI_STATUS\r
-EFIAPI\r
-InstallAllQemuLinkedTables (\r
- IN EFI_ACPI_TABLE_PROTOCOL *AcpiProtocol\r
- )\r
-{\r
- EFI_STATUS Status;\r
- FIRMWARE_CONFIG_ITEM FwCfgItem;\r
- UINTN FwCfgSize;\r
- QEMU_LOADER_ENTRY *LoaderStart;\r
- CONST QEMU_LOADER_ENTRY *LoaderEntry, *LoaderEnd;\r
- ORDERED_COLLECTION *Tracker;\r
- UINTN *InstalledKey;\r
- INT32 Installed;\r
- ORDERED_COLLECTION_ENTRY *TrackerEntry, *TrackerEntry2;\r
-\r
- Status = QemuFwCfgFindFile ("etc/table-loader", &FwCfgItem, &FwCfgSize);\r
- if (EFI_ERROR (Status)) {\r
- return Status;\r
- }\r
- if (FwCfgSize % sizeof *LoaderEntry != 0) {\r
- DEBUG ((EFI_D_ERROR, "%a: \"etc/table-loader\" has invalid size 0x%Lx\n",\r
- __FUNCTION__, (UINT64)FwCfgSize));\r
- return EFI_PROTOCOL_ERROR;\r
- }\r
-\r
- LoaderStart = AllocatePool (FwCfgSize);\r
- if (LoaderStart == NULL) {\r
- return EFI_OUT_OF_RESOURCES;\r
- }\r
- QemuFwCfgSelectItem (FwCfgItem);\r
- QemuFwCfgReadBytes (FwCfgSize, LoaderStart);\r
- LoaderEnd = LoaderStart + FwCfgSize / sizeof *LoaderEntry;\r
-\r
- Tracker = OrderedCollectionInit (BlobCompare, BlobKeyCompare);\r
- if (Tracker == NULL) {\r
- Status = EFI_OUT_OF_RESOURCES;\r
- goto FreeLoader;\r
- }\r
-\r
- //\r
- // first pass: process the commands\r
- //\r
- for (LoaderEntry = LoaderStart; LoaderEntry < LoaderEnd; ++LoaderEntry) {\r
- switch (LoaderEntry->Type) {\r
- case QemuLoaderCmdAllocate:\r
- Status = ProcessCmdAllocate (&LoaderEntry->Command.Allocate, Tracker);\r
- break;\r
-\r
- case QemuLoaderCmdAddPointer:\r
- Status = ProcessCmdAddPointer (&LoaderEntry->Command.AddPointer,\r
- Tracker);\r
- break;\r
-\r
- case QemuLoaderCmdAddChecksum:\r
- Status = ProcessCmdAddChecksum (&LoaderEntry->Command.AddChecksum,\r
- Tracker);\r
- break;\r
-\r
- default:\r
- DEBUG ((EFI_D_VERBOSE, "%a: unknown loader command: 0x%x\n",\r
- __FUNCTION__, LoaderEntry->Type));\r
- break;\r
- }\r
-\r
- if (EFI_ERROR (Status)) {\r
- goto FreeTracker;\r
- }\r
- }\r
-\r
- InstalledKey = AllocatePool (INSTALLED_TABLES_MAX * sizeof *InstalledKey);\r
- if (InstalledKey == NULL) {\r
- Status = EFI_OUT_OF_RESOURCES;\r
- goto FreeTracker;\r
- }\r
-\r
- //\r
- // second pass: identify and install ACPI tables\r
- //\r
- Installed = 0;\r
- for (LoaderEntry = LoaderStart; LoaderEntry < LoaderEnd; ++LoaderEntry) {\r
- if (LoaderEntry->Type == QemuLoaderCmdAddPointer) {\r
- Status = Process2ndPassCmdAddPointer (&LoaderEntry->Command.AddPointer,\r
- Tracker, AcpiProtocol, InstalledKey, &Installed);\r
- if (EFI_ERROR (Status)) {\r
- break;\r
- }\r
- }\r
- }\r
-\r
- if (EFI_ERROR (Status)) {\r
- //\r
- // roll back partial installation\r
- //\r
- while (Installed > 0) {\r
- --Installed;\r
- AcpiProtocol->UninstallAcpiTable (AcpiProtocol, InstalledKey[Installed]);\r
- }\r
- } else {\r
- DEBUG ((EFI_D_INFO, "%a: installed %d tables\n", __FUNCTION__, Installed));\r
- }\r
-\r
- FreePool (InstalledKey);\r
-\r
-FreeTracker:\r
- //\r
- // Tear down the tracker infrastructure. Each fw_cfg blob will be left in\r
- // place only if we're exiting with success and the blob hosts data that is\r
- // not directly part of some ACPI table.\r
- //\r
- for (TrackerEntry = OrderedCollectionMin (Tracker); TrackerEntry != NULL;\r
- TrackerEntry = TrackerEntry2) {\r
- VOID *UserStruct;\r
- BLOB *Blob;\r
-\r
- TrackerEntry2 = OrderedCollectionNext (TrackerEntry);\r
- OrderedCollectionDelete (Tracker, TrackerEntry, &UserStruct);\r
- Blob = UserStruct;\r
-\r
- if (EFI_ERROR (Status) || Blob->HostsOnlyTableData) {\r
- DEBUG ((EFI_D_VERBOSE, "%a: freeing \"%a\"\n", __FUNCTION__,\r
- Blob->File));\r
- gBS->FreePages ((UINTN)Blob->Base, EFI_SIZE_TO_PAGES (Blob->Size));\r
- }\r
- FreePool (Blob);\r
- }\r
- OrderedCollectionUninit (Tracker);\r
-\r
-FreeLoader:\r
- FreePool (LoaderStart);\r
-\r
- return Status;\r
-}\r
--- /dev/null
+/** @file\r
+ OVMF ACPI support using QEMU's fw-cfg interface\r
+\r
+ Copyright (c) 2008 - 2014, Intel Corporation. All rights reserved.<BR>\r
+ Copyright (C) 2012-2014, Red Hat, Inc.\r
+\r
+ This program and the accompanying materials\r
+ are licensed and made available under the terms and conditions of the BSD License\r
+ which accompanies this distribution. The full text of the license may be found at\r
+ http://opensource.org/licenses/bsd-license.php\r
+\r
+ THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
+ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
+\r
+**/\r
+\r
+#include "AcpiPlatform.h"\r
+#include "QemuLoader.h"\r
+#include <Library/BaseMemoryLib.h>\r
+#include <Library/MemoryAllocationLib.h>\r
+#include <Library/QemuFwCfgLib.h>\r
+#include <Library/DxeServicesTableLib.h>\r
+#include <Library/PcdLib.h>\r
+#include <Library/OrderedCollectionLib.h>\r
+#include <IndustryStandard/Acpi.h>\r
+\r
+\r
+//\r
+// The user structure for the ordered collection that will track the fw_cfg\r
+// blobs under processing.\r
+//\r
+typedef struct {\r
+ UINT8 File[QEMU_LOADER_FNAME_SIZE]; // NUL-terminated name of the fw_cfg\r
+ // blob. This is the ordering / search\r
+ // key.\r
+ UINTN Size; // The number of bytes in this blob.\r
+ UINT8 *Base; // Pointer to the blob data.\r
+ BOOLEAN HostsOnlyTableData; // TRUE iff the blob has been found to\r
+ // only contain data that is directly\r
+ // part of ACPI tables.\r
+} BLOB;\r
+\r
+\r
+/**\r
+ Compare a standalone key against a user structure containing an embedded key.\r
+\r
+ @param[in] StandaloneKey Pointer to the bare key.\r
+\r
+ @param[in] UserStruct Pointer to the user structure with the embedded\r
+ key.\r
+\r
+ @retval <0 If StandaloneKey compares less than UserStruct's key.\r
+\r
+ @retval 0 If StandaloneKey compares equal to UserStruct's key.\r
+\r
+ @retval >0 If StandaloneKey compares greater than UserStruct's key.\r
+**/\r
+STATIC\r
+INTN\r
+EFIAPI\r
+BlobKeyCompare (\r
+ IN CONST VOID *StandaloneKey,\r
+ IN CONST VOID *UserStruct\r
+ )\r
+{\r
+ CONST BLOB *Blob;\r
+\r
+ Blob = UserStruct;\r
+ return AsciiStrCmp (StandaloneKey, (CONST CHAR8 *)Blob->File);\r
+}\r
+\r
+\r
+/**\r
+ Comparator function for two user structures.\r
+\r
+ @param[in] UserStruct1 Pointer to the first user structure.\r
+\r
+ @param[in] UserStruct2 Pointer to the second user structure.\r
+\r
+ @retval <0 If UserStruct1 compares less than UserStruct2.\r
+\r
+ @retval 0 If UserStruct1 compares equal to UserStruct2.\r
+\r
+ @retval >0 If UserStruct1 compares greater than UserStruct2.\r
+**/\r
+STATIC\r
+INTN\r
+EFIAPI\r
+BlobCompare (\r
+ IN CONST VOID *UserStruct1,\r
+ IN CONST VOID *UserStruct2\r
+ )\r
+{\r
+ CONST BLOB *Blob1;\r
+\r
+ Blob1 = UserStruct1;\r
+ return BlobKeyCompare (Blob1->File, UserStruct2);\r
+}\r
+\r
+\r
+/**\r
+ Process a QEMU_LOADER_ALLOCATE command.\r
+\r
+ @param[in] Allocate The QEMU_LOADER_ALLOCATE command to process.\r
+\r
+ @param[in,out] Tracker The ORDERED_COLLECTION tracking the BLOB user\r
+ structures created thus far.\r
+\r
+ @retval EFI_SUCCESS An area of whole AcpiNVS pages has been\r
+ allocated for the blob contents, and the\r
+ contents have been saved. A BLOB object (user\r
+ structure) has been allocated from pool memory,\r
+ referencing the blob contents. The BLOB user\r
+ structure has been linked into Tracker.\r
+\r
+ @retval EFI_PROTOCOL_ERROR Malformed fw_cfg file name has been found in\r
+ Allocate, or the Allocate command references a\r
+ file that is already known by Tracker.\r
+\r
+ @retval EFI_UNSUPPORTED Unsupported alignment request has been found in\r
+ Allocate.\r
+\r
+ @retval EFI_OUT_OF_RESOURCES Pool allocation failed.\r
+\r
+ @return Error codes from QemuFwCfgFindFile() and\r
+ gBS->AllocatePages().\r
+**/\r
+STATIC\r
+EFI_STATUS\r
+EFIAPI\r
+ProcessCmdAllocate (\r
+ IN CONST QEMU_LOADER_ALLOCATE *Allocate,\r
+ IN OUT ORDERED_COLLECTION *Tracker\r
+ )\r
+{\r
+ FIRMWARE_CONFIG_ITEM FwCfgItem;\r
+ UINTN FwCfgSize;\r
+ EFI_STATUS Status;\r
+ UINTN NumPages;\r
+ EFI_PHYSICAL_ADDRESS Address;\r
+ BLOB *Blob;\r
+\r
+ if (Allocate->File[QEMU_LOADER_FNAME_SIZE - 1] != '\0') {\r
+ DEBUG ((EFI_D_ERROR, "%a: malformed file name\n", __FUNCTION__));\r
+ return EFI_PROTOCOL_ERROR;\r
+ }\r
+\r
+ if (Allocate->Alignment > EFI_PAGE_SIZE) {\r
+ DEBUG ((EFI_D_ERROR, "%a: unsupported alignment 0x%x\n", __FUNCTION__,\r
+ Allocate->Alignment));\r
+ return EFI_UNSUPPORTED;\r
+ }\r
+\r
+ Status = QemuFwCfgFindFile ((CHAR8 *)Allocate->File, &FwCfgItem, &FwCfgSize);\r
+ if (EFI_ERROR (Status)) {\r
+ DEBUG ((EFI_D_ERROR, "%a: QemuFwCfgFindFile(\"%a\"): %r\n", __FUNCTION__,\r
+ Allocate->File, Status));\r
+ return Status;\r
+ }\r
+\r
+ NumPages = EFI_SIZE_TO_PAGES (FwCfgSize);\r
+ Address = 0xFFFFFFFF;\r
+ Status = gBS->AllocatePages (AllocateMaxAddress, EfiACPIMemoryNVS, NumPages,\r
+ &Address);\r
+ if (EFI_ERROR (Status)) {\r
+ return Status;\r
+ }\r
+\r
+ Blob = AllocatePool (sizeof *Blob);\r
+ if (Blob == NULL) {\r
+ Status = EFI_OUT_OF_RESOURCES;\r
+ goto FreePages;\r
+ }\r
+ CopyMem (Blob->File, Allocate->File, QEMU_LOADER_FNAME_SIZE);\r
+ Blob->Size = FwCfgSize;\r
+ Blob->Base = (VOID *)(UINTN)Address;\r
+ Blob->HostsOnlyTableData = TRUE;\r
+\r
+ Status = OrderedCollectionInsert (Tracker, NULL, Blob);\r
+ if (Status == RETURN_ALREADY_STARTED) {\r
+ DEBUG ((EFI_D_ERROR, "%a: duplicated file \"%a\"\n", __FUNCTION__,\r
+ Allocate->File));\r
+ Status = EFI_PROTOCOL_ERROR;\r
+ }\r
+ if (EFI_ERROR (Status)) {\r
+ goto FreeBlob;\r
+ }\r
+\r
+ QemuFwCfgSelectItem (FwCfgItem);\r
+ QemuFwCfgReadBytes (FwCfgSize, Blob->Base);\r
+ ZeroMem (Blob->Base + Blob->Size, EFI_PAGES_TO_SIZE (NumPages) - Blob->Size);\r
+\r
+ DEBUG ((EFI_D_VERBOSE, "%a: File=\"%a\" Alignment=0x%x Zone=%d Size=0x%Lx "\r
+ "Address=0x%Lx\n", __FUNCTION__, Allocate->File, Allocate->Alignment,\r
+ Allocate->Zone, (UINT64)Blob->Size, (UINT64)(UINTN)Blob->Base));\r
+ return EFI_SUCCESS;\r
+\r
+FreeBlob:\r
+ FreePool (Blob);\r
+\r
+FreePages:\r
+ gBS->FreePages (Address, NumPages);\r
+\r
+ return Status;\r
+}\r
+\r
+\r
+/**\r
+ Process a QEMU_LOADER_ADD_POINTER command.\r
+\r
+ @param[in] AddPointer The QEMU_LOADER_ADD_POINTER command to process.\r
+\r
+ @param[in] Tracker The ORDERED_COLLECTION tracking the BLOB user\r
+ structures created thus far.\r
+\r
+ @retval EFI_PROTOCOL_ERROR Malformed fw_cfg file name(s) have been found in\r
+ AddPointer, or the AddPointer command references\r
+ a file unknown to Tracker, or the pointer to\r
+ relocate has invalid location, size, or value, or\r
+ the relocated pointer value is not representable\r
+ in the given pointer size.\r
+\r
+ @retval EFI_SUCCESS The pointer field inside the pointer blob has\r
+ been relocated.\r
+**/\r
+STATIC\r
+EFI_STATUS\r
+EFIAPI\r
+ProcessCmdAddPointer (\r
+ IN CONST QEMU_LOADER_ADD_POINTER *AddPointer,\r
+ IN CONST ORDERED_COLLECTION *Tracker\r
+ )\r
+{\r
+ ORDERED_COLLECTION_ENTRY *TrackerEntry, *TrackerEntry2;\r
+ BLOB *Blob, *Blob2;\r
+ UINT8 *PointerField;\r
+ UINT64 PointerValue;\r
+\r
+ if (AddPointer->PointerFile[QEMU_LOADER_FNAME_SIZE - 1] != '\0' ||\r
+ AddPointer->PointeeFile[QEMU_LOADER_FNAME_SIZE - 1] != '\0') {\r
+ DEBUG ((EFI_D_ERROR, "%a: malformed file name\n", __FUNCTION__));\r
+ return EFI_PROTOCOL_ERROR;\r
+ }\r
+\r
+ TrackerEntry = OrderedCollectionFind (Tracker, AddPointer->PointerFile);\r
+ TrackerEntry2 = OrderedCollectionFind (Tracker, AddPointer->PointeeFile);\r
+ if (TrackerEntry == NULL || TrackerEntry2 == NULL) {\r
+ DEBUG ((EFI_D_ERROR, "%a: invalid blob reference(s) \"%a\" / \"%a\"\n",\r
+ __FUNCTION__, AddPointer->PointerFile, AddPointer->PointeeFile));\r
+ return EFI_PROTOCOL_ERROR;\r
+ }\r
+\r
+ Blob = OrderedCollectionUserStruct (TrackerEntry);\r
+ Blob2 = OrderedCollectionUserStruct (TrackerEntry2);\r
+ if ((AddPointer->PointerSize != 1 && AddPointer->PointerSize != 2 &&\r
+ AddPointer->PointerSize != 4 && AddPointer->PointerSize != 8) ||\r
+ Blob->Size < AddPointer->PointerSize ||\r
+ Blob->Size - AddPointer->PointerSize < AddPointer->PointerOffset) {\r
+ DEBUG ((EFI_D_ERROR, "%a: invalid pointer location or size in \"%a\"\n",\r
+ __FUNCTION__, AddPointer->PointerFile));\r
+ return EFI_PROTOCOL_ERROR;\r
+ }\r
+\r
+ PointerField = Blob->Base + AddPointer->PointerOffset;\r
+ PointerValue = 0;\r
+ CopyMem (&PointerValue, PointerField, AddPointer->PointerSize);\r
+ if (PointerValue >= Blob2->Size) {\r
+ DEBUG ((EFI_D_ERROR, "%a: invalid pointer value in \"%a\"\n", __FUNCTION__,\r
+ AddPointer->PointerFile));\r
+ return EFI_PROTOCOL_ERROR;\r
+ }\r
+\r
+ //\r
+ // The memory allocation system ensures that the address of the byte past the\r
+ // last byte of any allocated object is expressible (no wraparound).\r
+ //\r
+ ASSERT ((UINTN)Blob2->Base <= MAX_ADDRESS - Blob2->Size);\r
+\r
+ PointerValue += (UINT64)(UINTN)Blob2->Base;\r
+ if (RShiftU64 (\r
+ RShiftU64 (PointerValue, AddPointer->PointerSize * 8 - 1), 1) != 0) {\r
+ DEBUG ((EFI_D_ERROR, "%a: relocated pointer value unrepresentable in "\r
+ "\"%a\"\n", __FUNCTION__, AddPointer->PointerFile));\r
+ return EFI_PROTOCOL_ERROR;\r
+ }\r
+\r
+ CopyMem (PointerField, &PointerValue, AddPointer->PointerSize);\r
+\r
+ DEBUG ((EFI_D_VERBOSE, "%a: PointerFile=\"%a\" PointeeFile=\"%a\" "\r
+ "PointerOffset=0x%x PointerSize=%d\n", __FUNCTION__,\r
+ AddPointer->PointerFile, AddPointer->PointeeFile,\r
+ AddPointer->PointerOffset, AddPointer->PointerSize));\r
+ return EFI_SUCCESS;\r
+}\r
+\r
+\r
+/**\r
+ Process a QEMU_LOADER_ADD_CHECKSUM command.\r
+\r
+ @param[in] AddChecksum The QEMU_LOADER_ADD_CHECKSUM command to process.\r
+\r
+ @param[in] Tracker The ORDERED_COLLECTION tracking the BLOB user\r
+ structures created thus far.\r
+\r
+ @retval EFI_PROTOCOL_ERROR Malformed fw_cfg file name has been found in\r
+ AddChecksum, or the AddChecksum command\r
+ references a file unknown to Tracker, or the\r
+ range to checksum is invalid.\r
+\r
+ @retval EFI_SUCCESS The requested range has been checksummed.\r
+**/\r
+STATIC\r
+EFI_STATUS\r
+EFIAPI\r
+ProcessCmdAddChecksum (\r
+ IN CONST QEMU_LOADER_ADD_CHECKSUM *AddChecksum,\r
+ IN CONST ORDERED_COLLECTION *Tracker\r
+ )\r
+{\r
+ ORDERED_COLLECTION_ENTRY *TrackerEntry;\r
+ BLOB *Blob;\r
+\r
+ if (AddChecksum->File[QEMU_LOADER_FNAME_SIZE - 1] != '\0') {\r
+ DEBUG ((EFI_D_ERROR, "%a: malformed file name\n", __FUNCTION__));\r
+ return EFI_PROTOCOL_ERROR;\r
+ }\r
+\r
+ TrackerEntry = OrderedCollectionFind (Tracker, AddChecksum->File);\r
+ if (TrackerEntry == NULL) {\r
+ DEBUG ((EFI_D_ERROR, "%a: invalid blob reference \"%a\"\n", __FUNCTION__,\r
+ AddChecksum->File));\r
+ return EFI_PROTOCOL_ERROR;\r
+ }\r
+\r
+ Blob = OrderedCollectionUserStruct (TrackerEntry);\r
+ if (Blob->Size <= AddChecksum->ResultOffset ||\r
+ Blob->Size < AddChecksum->Length ||\r
+ Blob->Size - AddChecksum->Length < AddChecksum->Start) {\r
+ DEBUG ((EFI_D_ERROR, "%a: invalid checksum range in \"%a\"\n",\r
+ __FUNCTION__, AddChecksum->File));\r
+ return EFI_PROTOCOL_ERROR;\r
+ }\r
+\r
+ Blob->Base[AddChecksum->ResultOffset] = CalculateCheckSum8 (\r
+ Blob->Base + AddChecksum->Start,\r
+ AddChecksum->Length\r
+ );\r
+ DEBUG ((EFI_D_VERBOSE, "%a: File=\"%a\" ResultOffset=0x%x Start=0x%x "\r
+ "Length=0x%x\n", __FUNCTION__, AddChecksum->File,\r
+ AddChecksum->ResultOffset, AddChecksum->Start, AddChecksum->Length));\r
+ return EFI_SUCCESS;\r
+}\r
+\r
+\r
+//\r
+// We'll be saving the keys of installed tables so that we can roll them back\r
+// in case of failure. 128 tables should be enough for anyone (TM).\r
+//\r
+#define INSTALLED_TABLES_MAX 128\r
+\r
+/**\r
+ Process a QEMU_LOADER_ADD_POINTER command in order to see if its target byte\r
+ array is an ACPI table, and if so, install it.\r
+\r
+ This function assumes that the entire QEMU linker/loader command file has\r
+ been processed successfuly in a prior first pass.\r
+\r
+ @param[in] AddPointer The QEMU_LOADER_ADD_POINTER command to process.\r
+\r
+ @param[in] Tracker The ORDERED_COLLECTION tracking the BLOB user\r
+ structures.\r
+\r
+ @param[in] AcpiProtocol The ACPI table protocol used to install tables.\r
+\r
+ @param[in,out] InstalledKey On input, an array of INSTALLED_TABLES_MAX UINTN\r
+ elements, allocated by the caller. On output,\r
+ the function will have stored (appended) the\r
+ AcpiProtocol-internal key of the ACPI table that\r
+ the function has installed, if the AddPointer\r
+ command identified an ACPI table that is\r
+ different from RSDT and XSDT.\r
+\r
+ @param[in,out] NumInstalled On input, the number of entries already used in\r
+ InstalledKey; it must be in [0,\r
+ INSTALLED_TABLES_MAX] inclusive. On output, the\r
+ parameter is incremented if the AddPointer\r
+ command identified an ACPI table that is\r
+ different from RSDT and XSDT.\r
+\r
+ @retval EFI_INVALID_PARAMETER NumInstalled was outside the allowed range on\r
+ input.\r
+\r
+ @retval EFI_OUT_OF_RESOURCES The AddPointer command identified an ACPI\r
+ table different from RSDT and XSDT, but there\r
+ was no more room in InstalledKey.\r
+\r
+ @retval EFI_SUCCESS AddPointer has been processed. Either an ACPI\r
+ table different from RSDT and XSDT has been\r
+ installed (reflected by InstalledKey and\r
+ NumInstalled), or RSDT or XSDT has been\r
+ identified but not installed, or the fw_cfg\r
+ blob pointed-into by AddPointer has been\r
+ marked as hosting something else than just\r
+ direct ACPI table contents.\r
+\r
+ @return Error codes returned by\r
+ AcpiProtocol->InstallAcpiTable().\r
+**/\r
+STATIC\r
+EFI_STATUS\r
+EFIAPI\r
+Process2ndPassCmdAddPointer (\r
+ IN CONST QEMU_LOADER_ADD_POINTER *AddPointer,\r
+ IN CONST ORDERED_COLLECTION *Tracker,\r
+ IN EFI_ACPI_TABLE_PROTOCOL *AcpiProtocol,\r
+ IN OUT UINTN InstalledKey[INSTALLED_TABLES_MAX],\r
+ IN OUT INT32 *NumInstalled\r
+ )\r
+{\r
+ CONST ORDERED_COLLECTION_ENTRY *TrackerEntry;\r
+ CONST ORDERED_COLLECTION_ENTRY *TrackerEntry2;\r
+ CONST BLOB *Blob;\r
+ BLOB *Blob2;\r
+ CONST UINT8 *PointerField;\r
+ UINT64 PointerValue;\r
+ UINTN Blob2Remaining;\r
+ UINTN TableSize;\r
+ CONST EFI_ACPI_1_0_FIRMWARE_ACPI_CONTROL_STRUCTURE *Facs;\r
+ CONST EFI_ACPI_DESCRIPTION_HEADER *Header;\r
+ EFI_STATUS Status;\r
+\r
+ if (*NumInstalled < 0 || *NumInstalled > INSTALLED_TABLES_MAX) {\r
+ return EFI_INVALID_PARAMETER;\r
+ }\r
+\r
+ TrackerEntry = OrderedCollectionFind (Tracker, AddPointer->PointerFile);\r
+ TrackerEntry2 = OrderedCollectionFind (Tracker, AddPointer->PointeeFile);\r
+ Blob = OrderedCollectionUserStruct (TrackerEntry);\r
+ Blob2 = OrderedCollectionUserStruct (TrackerEntry2);\r
+ PointerField = Blob->Base + AddPointer->PointerOffset;\r
+ PointerValue = 0;\r
+ CopyMem (&PointerValue, PointerField, AddPointer->PointerSize);\r
+\r
+ //\r
+ // We assert that PointerValue falls inside Blob2's contents. This is ensured\r
+ // by the Blob2->Size check and later checks in ProcessCmdAddPointer().\r
+ //\r
+ Blob2Remaining = (UINTN)Blob2->Base;\r
+ ASSERT(PointerValue >= Blob2Remaining);\r
+ Blob2Remaining += Blob2->Size;\r
+ ASSERT (PointerValue < Blob2Remaining);\r
+\r
+ Blob2Remaining -= (UINTN) PointerValue;\r
+ DEBUG ((EFI_D_VERBOSE, "%a: checking for ACPI header in \"%a\" at 0x%Lx "\r
+ "(remaining: 0x%Lx): ", __FUNCTION__, AddPointer->PointeeFile,\r
+ PointerValue, (UINT64)Blob2Remaining));\r
+\r
+ TableSize = 0;\r
+\r
+ //\r
+ // To make our job simple, the FACS has a custom header. Sigh.\r
+ //\r
+ if (sizeof *Facs <= Blob2Remaining) {\r
+ Facs = (EFI_ACPI_1_0_FIRMWARE_ACPI_CONTROL_STRUCTURE *)(UINTN)PointerValue;\r
+\r
+ if (Facs->Length >= sizeof *Facs &&\r
+ Facs->Length <= Blob2Remaining &&\r
+ Facs->Signature ==\r
+ EFI_ACPI_1_0_FIRMWARE_ACPI_CONTROL_STRUCTURE_SIGNATURE) {\r
+ DEBUG ((EFI_D_VERBOSE, "found \"%-4.4a\" size 0x%x\n",\r
+ (CONST CHAR8 *)&Facs->Signature, Facs->Length));\r
+ TableSize = Facs->Length;\r
+ }\r
+ }\r
+\r
+ //\r
+ // check for the uniform tables\r
+ //\r
+ if (TableSize == 0 && sizeof *Header <= Blob2Remaining) {\r
+ Header = (EFI_ACPI_DESCRIPTION_HEADER *)(UINTN)PointerValue;\r
+\r
+ if (Header->Length >= sizeof *Header &&\r
+ Header->Length <= Blob2Remaining &&\r
+ CalculateSum8 ((CONST UINT8 *)Header, Header->Length) == 0) {\r
+ //\r
+ // This looks very much like an ACPI table from QEMU:\r
+ // - Length field consistent with both ACPI and containing blob size\r
+ // - checksum is correct\r
+ //\r
+ DEBUG ((EFI_D_VERBOSE, "found \"%-4.4a\" size 0x%x\n",\r
+ (CONST CHAR8 *)&Header->Signature, Header->Length));\r
+ TableSize = Header->Length;\r
+\r
+ //\r
+ // Skip RSDT and XSDT because those are handled by\r
+ // EFI_ACPI_TABLE_PROTOCOL automatically.\r
+ if (Header->Signature ==\r
+ EFI_ACPI_1_0_ROOT_SYSTEM_DESCRIPTION_TABLE_SIGNATURE ||\r
+ Header->Signature ==\r
+ EFI_ACPI_2_0_EXTENDED_SYSTEM_DESCRIPTION_TABLE_SIGNATURE) {\r
+ return EFI_SUCCESS;\r
+ }\r
+ }\r
+ }\r
+\r
+ if (TableSize == 0) {\r
+ DEBUG ((EFI_D_VERBOSE, "not found; marking fw_cfg blob as opaque\n"));\r
+ Blob2->HostsOnlyTableData = FALSE;\r
+ return EFI_SUCCESS;\r
+ }\r
+\r
+ if (*NumInstalled == INSTALLED_TABLES_MAX) {\r
+ DEBUG ((EFI_D_ERROR, "%a: can't install more than %d tables\n",\r
+ __FUNCTION__, INSTALLED_TABLES_MAX));\r
+ return EFI_OUT_OF_RESOURCES;\r
+ }\r
+\r
+ Status = AcpiProtocol->InstallAcpiTable (AcpiProtocol,\r
+ (VOID *)(UINTN)PointerValue, TableSize,\r
+ &InstalledKey[*NumInstalled]);\r
+ if (EFI_ERROR (Status)) {\r
+ DEBUG ((EFI_D_ERROR, "%a: InstallAcpiTable(): %r\n", __FUNCTION__,\r
+ Status));\r
+ return Status;\r
+ }\r
+ ++*NumInstalled;\r
+ return EFI_SUCCESS;\r
+}\r
+\r
+\r
+/**\r
+ Download, process, and install ACPI table data from the QEMU loader\r
+ interface.\r
+\r
+ @param[in] AcpiProtocol The ACPI table protocol used to install tables.\r
+\r
+ @retval EFI_UNSUPPORTED Firmware configuration is unavailable, or QEMU\r
+ loader command with unsupported parameters\r
+ has been found.\r
+\r
+ @retval EFI_NOT_FOUND The host doesn't export the required fw_cfg\r
+ files.\r
+\r
+ @retval EFI_OUT_OF_RESOURCES Memory allocation failed, or more than\r
+ INSTALLED_TABLES_MAX tables found.\r
+\r
+ @retval EFI_PROTOCOL_ERROR Found invalid fw_cfg contents.\r
+\r
+ @return Status codes returned by\r
+ AcpiProtocol->InstallAcpiTable().\r
+\r
+**/\r
+EFI_STATUS\r
+EFIAPI\r
+InstallAllQemuLinkedTables (\r
+ IN EFI_ACPI_TABLE_PROTOCOL *AcpiProtocol\r
+ )\r
+{\r
+ EFI_STATUS Status;\r
+ FIRMWARE_CONFIG_ITEM FwCfgItem;\r
+ UINTN FwCfgSize;\r
+ QEMU_LOADER_ENTRY *LoaderStart;\r
+ CONST QEMU_LOADER_ENTRY *LoaderEntry, *LoaderEnd;\r
+ ORDERED_COLLECTION *Tracker;\r
+ UINTN *InstalledKey;\r
+ INT32 Installed;\r
+ ORDERED_COLLECTION_ENTRY *TrackerEntry, *TrackerEntry2;\r
+\r
+ Status = QemuFwCfgFindFile ("etc/table-loader", &FwCfgItem, &FwCfgSize);\r
+ if (EFI_ERROR (Status)) {\r
+ return Status;\r
+ }\r
+ if (FwCfgSize % sizeof *LoaderEntry != 0) {\r
+ DEBUG ((EFI_D_ERROR, "%a: \"etc/table-loader\" has invalid size 0x%Lx\n",\r
+ __FUNCTION__, (UINT64)FwCfgSize));\r
+ return EFI_PROTOCOL_ERROR;\r
+ }\r
+\r
+ LoaderStart = AllocatePool (FwCfgSize);\r
+ if (LoaderStart == NULL) {\r
+ return EFI_OUT_OF_RESOURCES;\r
+ }\r
+ QemuFwCfgSelectItem (FwCfgItem);\r
+ QemuFwCfgReadBytes (FwCfgSize, LoaderStart);\r
+ LoaderEnd = LoaderStart + FwCfgSize / sizeof *LoaderEntry;\r
+\r
+ Tracker = OrderedCollectionInit (BlobCompare, BlobKeyCompare);\r
+ if (Tracker == NULL) {\r
+ Status = EFI_OUT_OF_RESOURCES;\r
+ goto FreeLoader;\r
+ }\r
+\r
+ //\r
+ // first pass: process the commands\r
+ //\r
+ for (LoaderEntry = LoaderStart; LoaderEntry < LoaderEnd; ++LoaderEntry) {\r
+ switch (LoaderEntry->Type) {\r
+ case QemuLoaderCmdAllocate:\r
+ Status = ProcessCmdAllocate (&LoaderEntry->Command.Allocate, Tracker);\r
+ break;\r
+\r
+ case QemuLoaderCmdAddPointer:\r
+ Status = ProcessCmdAddPointer (&LoaderEntry->Command.AddPointer,\r
+ Tracker);\r
+ break;\r
+\r
+ case QemuLoaderCmdAddChecksum:\r
+ Status = ProcessCmdAddChecksum (&LoaderEntry->Command.AddChecksum,\r
+ Tracker);\r
+ break;\r
+\r
+ default:\r
+ DEBUG ((EFI_D_VERBOSE, "%a: unknown loader command: 0x%x\n",\r
+ __FUNCTION__, LoaderEntry->Type));\r
+ break;\r
+ }\r
+\r
+ if (EFI_ERROR (Status)) {\r
+ goto FreeTracker;\r
+ }\r
+ }\r
+\r
+ InstalledKey = AllocatePool (INSTALLED_TABLES_MAX * sizeof *InstalledKey);\r
+ if (InstalledKey == NULL) {\r
+ Status = EFI_OUT_OF_RESOURCES;\r
+ goto FreeTracker;\r
+ }\r
+\r
+ //\r
+ // second pass: identify and install ACPI tables\r
+ //\r
+ Installed = 0;\r
+ for (LoaderEntry = LoaderStart; LoaderEntry < LoaderEnd; ++LoaderEntry) {\r
+ if (LoaderEntry->Type == QemuLoaderCmdAddPointer) {\r
+ Status = Process2ndPassCmdAddPointer (&LoaderEntry->Command.AddPointer,\r
+ Tracker, AcpiProtocol, InstalledKey, &Installed);\r
+ if (EFI_ERROR (Status)) {\r
+ break;\r
+ }\r
+ }\r
+ }\r
+\r
+ if (EFI_ERROR (Status)) {\r
+ //\r
+ // roll back partial installation\r
+ //\r
+ while (Installed > 0) {\r
+ --Installed;\r
+ AcpiProtocol->UninstallAcpiTable (AcpiProtocol, InstalledKey[Installed]);\r
+ }\r
+ } else {\r
+ DEBUG ((EFI_D_INFO, "%a: installed %d tables\n", __FUNCTION__, Installed));\r
+ }\r
+\r
+ FreePool (InstalledKey);\r
+\r
+FreeTracker:\r
+ //\r
+ // Tear down the tracker infrastructure. Each fw_cfg blob will be left in\r
+ // place only if we're exiting with success and the blob hosts data that is\r
+ // not directly part of some ACPI table.\r
+ //\r
+ for (TrackerEntry = OrderedCollectionMin (Tracker); TrackerEntry != NULL;\r
+ TrackerEntry = TrackerEntry2) {\r
+ VOID *UserStruct;\r
+ BLOB *Blob;\r
+\r
+ TrackerEntry2 = OrderedCollectionNext (TrackerEntry);\r
+ OrderedCollectionDelete (Tracker, TrackerEntry, &UserStruct);\r
+ Blob = UserStruct;\r
+\r
+ if (EFI_ERROR (Status) || Blob->HostsOnlyTableData) {\r
+ DEBUG ((EFI_D_VERBOSE, "%a: freeing \"%a\"\n", __FUNCTION__,\r
+ Blob->File));\r
+ gBS->FreePages ((UINTN)Blob->Base, EFI_SIZE_TO_PAGES (Blob->Size));\r
+ }\r
+ FreePool (Blob);\r
+ }\r
+ OrderedCollectionUninit (Tracker);\r
+\r
+FreeLoader:\r
+ FreePool (LoaderStart);\r
+\r
+ return Status;\r
+}\r
projects / mirror_edk2.git / commitdiff