+++ /dev/null
-/** @file\r
- OVMF ACPI support using QEMU's fw-cfg interface\r
-\r
- Copyright (C) 2012-2021, Red Hat, Inc.\r
- Copyright (c) 2008 - 2014, Intel Corporation. All rights reserved.<BR>\r
-\r
- SPDX-License-Identifier: BSD-2-Clause-Patent\r
-\r
-**/\r
-\r
-#include <IndustryStandard/Acpi.h> // EFI_ACPI_DESCRIPTION_HEADER\r
-#include <IndustryStandard/QemuLoader.h> // QEMU_LOADER_FNAME_SIZE\r
-#include <Library/BaseLib.h> // AsciiStrCmp()\r
-#include <Library/BaseMemoryLib.h> // CopyMem()\r
-#include <Library/DebugLib.h> // DEBUG()\r
-#include <Library/MemoryAllocationLib.h> // AllocatePool()\r
-#include <Library/OrderedCollectionLib.h> // OrderedCollectionMin()\r
-#include <Library/QemuFwCfgLib.h> // QemuFwCfgFindFile()\r
-#include <Library/QemuFwCfgS3Lib.h> // QemuFwCfgS3Enabled()\r
-#include <Library/UefiBootServicesTableLib.h> // gBS\r
-\r
-#include "AcpiPlatform.h"\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
- Comparator function for two opaque pointers, ordering on (unsigned) pointer\r
- value itself.\r
- Can be used as both Key and UserStruct comparator.\r
-\r
- @param[in] Pointer1 First pointer.\r
-\r
- @param[in] Pointer2 Second pointer.\r
-\r
- @retval <0 If Pointer1 compares less than Pointer2.\r
-\r
- @retval 0 If Pointer1 compares equal to Pointer2.\r
-\r
- @retval >0 If Pointer1 compares greater than Pointer2.\r
-**/\r
-STATIC\r
-INTN\r
-EFIAPI\r
-PointerCompare (\r
- IN CONST VOID *Pointer1,\r
- IN CONST VOID *Pointer2\r
- )\r
-{\r
- if (Pointer1 == Pointer2) {\r
- return 0;\r
- }\r
- if ((UINTN)Pointer1 < (UINTN)Pointer2) {\r
- return -1;\r
- }\r
- return 1;\r
-}\r
-\r
-\r
-/**\r
- Comparator function for two ASCII strings. Can be used as both Key and\r
- UserStruct comparator.\r
-\r
- This function exists solely so we can avoid casting &AsciiStrCmp to\r
- ORDERED_COLLECTION_USER_COMPARE and ORDERED_COLLECTION_KEY_COMPARE.\r
-\r
- @param[in] AsciiString1 Pointer to the first ASCII string.\r
-\r
- @param[in] AsciiString2 Pointer to the second ASCII string.\r
-\r
- @return The return value of AsciiStrCmp (AsciiString1, AsciiString2).\r
-**/\r
-STATIC\r
-INTN\r
-EFIAPI\r
-AsciiStringCompare (\r
- IN CONST VOID *AsciiString1,\r
- IN CONST VOID *AsciiString2\r
- )\r
-{\r
- return AsciiStrCmp (AsciiString1, AsciiString2);\r
-}\r
-\r
-\r
-/**\r
- Release the ORDERED_COLLECTION structure populated by\r
- CollectAllocationsRestrictedTo32Bit() (below).\r
-\r
- This function may be called by CollectAllocationsRestrictedTo32Bit() itself,\r
- on the error path.\r
-\r
- @param[in] AllocationsRestrictedTo32Bit The ORDERED_COLLECTION structure to\r
- release.\r
-**/\r
-STATIC\r
-VOID\r
-ReleaseAllocationsRestrictedTo32Bit (\r
- IN ORDERED_COLLECTION *AllocationsRestrictedTo32Bit\r
-)\r
-{\r
- ORDERED_COLLECTION_ENTRY *Entry, *Entry2;\r
-\r
- for (Entry = OrderedCollectionMin (AllocationsRestrictedTo32Bit);\r
- Entry != NULL;\r
- Entry = Entry2) {\r
- Entry2 = OrderedCollectionNext (Entry);\r
- OrderedCollectionDelete (AllocationsRestrictedTo32Bit, Entry, NULL);\r
- }\r
- OrderedCollectionUninit (AllocationsRestrictedTo32Bit);\r
-}\r
-\r
-\r
-/**\r
- Iterate over the linker/loader script, and collect the names of the fw_cfg\r
- blobs that are referenced by QEMU_LOADER_ADD_POINTER.PointeeFile fields, such\r
- that QEMU_LOADER_ADD_POINTER.PointerSize is less than 8. This means that the\r
- pointee blob's address will have to be patched into a narrower-than-8 byte\r
- pointer field, hence the pointee blob must not be allocated from 64-bit\r
- address space.\r
-\r
- @param[out] AllocationsRestrictedTo32Bit The ORDERED_COLLECTION structure\r
- linking (not copying / owning) such\r
- QEMU_LOADER_ADD_POINTER.PointeeFile\r
- fields that name the blobs\r
- restricted from 64-bit allocation.\r
-\r
- @param[in] LoaderStart Points to the first entry in the\r
- linker/loader script.\r
-\r
- @param[in] LoaderEnd Points one past the last entry in\r
- the linker/loader script.\r
-\r
- @retval EFI_SUCCESS AllocationsRestrictedTo32Bit has been\r
- populated.\r
-\r
- @retval EFI_OUT_OF_RESOURCES Memory allocation failed.\r
-\r
- @retval EFI_PROTOCOL_ERROR Invalid linker/loader script contents.\r
-**/\r
-STATIC\r
-EFI_STATUS\r
-CollectAllocationsRestrictedTo32Bit (\r
- OUT ORDERED_COLLECTION **AllocationsRestrictedTo32Bit,\r
- IN CONST QEMU_LOADER_ENTRY *LoaderStart,\r
- IN CONST QEMU_LOADER_ENTRY *LoaderEnd\r
-)\r
-{\r
- ORDERED_COLLECTION *Collection;\r
- CONST QEMU_LOADER_ENTRY *LoaderEntry;\r
- EFI_STATUS Status;\r
-\r
- Collection = OrderedCollectionInit (AsciiStringCompare, AsciiStringCompare);\r
- if (Collection == NULL) {\r
- return EFI_OUT_OF_RESOURCES;\r
- }\r
-\r
- for (LoaderEntry = LoaderStart; LoaderEntry < LoaderEnd; ++LoaderEntry) {\r
- CONST QEMU_LOADER_ADD_POINTER *AddPointer;\r
-\r
- if (LoaderEntry->Type != QemuLoaderCmdAddPointer) {\r
- continue;\r
- }\r
- AddPointer = &LoaderEntry->Command.AddPointer;\r
-\r
- if (AddPointer->PointerSize >= 8) {\r
- continue;\r
- }\r
-\r
- if (AddPointer->PointeeFile[QEMU_LOADER_FNAME_SIZE - 1] != '\0') {\r
- DEBUG ((DEBUG_ERROR, "%a: malformed file name\n", __FUNCTION__));\r
- Status = EFI_PROTOCOL_ERROR;\r
- goto RollBack;\r
- }\r
-\r
- Status = OrderedCollectionInsert (\r
- Collection,\r
- NULL, // Entry\r
- (VOID *)AddPointer->PointeeFile\r
- );\r
- switch (Status) {\r
- case EFI_SUCCESS:\r
- DEBUG ((\r
- DEBUG_VERBOSE,\r
- "%a: restricting blob \"%a\" from 64-bit allocation\n",\r
- __FUNCTION__,\r
- AddPointer->PointeeFile\r
- ));\r
- break;\r
- case EFI_ALREADY_STARTED:\r
- //\r
- // The restriction has been recorded already.\r
- //\r
- break;\r
- case EFI_OUT_OF_RESOURCES:\r
- goto RollBack;\r
- default:\r
- ASSERT (FALSE);\r
- }\r
- }\r
-\r
- *AllocationsRestrictedTo32Bit = Collection;\r
- return EFI_SUCCESS;\r
-\r
-RollBack:\r
- ReleaseAllocationsRestrictedTo32Bit (Collection);\r
- return Status;\r
-}\r
-\r
-\r
-/**\r
- Process a QEMU_LOADER_ALLOCATE command.\r
-\r
- @param[in] Allocate The QEMU_LOADER_ALLOCATE command to\r
- process.\r
-\r
- @param[in,out] Tracker The ORDERED_COLLECTION tracking the\r
- BLOB user structures created thus\r
- far.\r
-\r
- @param[in] AllocationsRestrictedTo32Bit The ORDERED_COLLECTION populated by\r
- the function\r
- CollectAllocationsRestrictedTo32Bit,\r
- naming the fw_cfg blobs that must\r
- not be allocated from 64-bit address\r
- space.\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
- IN ORDERED_COLLECTION *AllocationsRestrictedTo32Bit\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 ((DEBUG_ERROR, "%a: malformed file name\n", __FUNCTION__));\r
- return EFI_PROTOCOL_ERROR;\r
- }\r
-\r
- if (Allocate->Alignment > EFI_PAGE_SIZE) {\r
- DEBUG ((DEBUG_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 ((DEBUG_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 = MAX_UINT64;\r
- if (OrderedCollectionFind (\r
- AllocationsRestrictedTo32Bit,\r
- Allocate->File\r
- ) != NULL) {\r
- Address = MAX_UINT32;\r
- }\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 ((DEBUG_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 ((DEBUG_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 ((DEBUG_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 ((DEBUG_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 ((DEBUG_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 ((DEBUG_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 (AddPointer->PointerSize < 8 &&\r
- RShiftU64 (PointerValue, AddPointer->PointerSize * 8) != 0) {\r
- DEBUG ((DEBUG_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 ((DEBUG_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 ((DEBUG_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 ((DEBUG_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 ((DEBUG_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 ((DEBUG_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
- Process a QEMU_LOADER_WRITE_POINTER command.\r
-\r
- @param[in] WritePointer The QEMU_LOADER_WRITE_POINTER command to process.\r
-\r
- @param[in] Tracker The ORDERED_COLLECTION tracking the BLOB user\r
- structures created thus far.\r
-\r
- @param[in,out] S3Context The S3_CONTEXT object capturing the fw_cfg actions\r
- of successfully processed QEMU_LOADER_WRITE_POINTER\r
- commands, to be replayed at S3 resume. S3Context\r
- may be NULL if S3 is disabled.\r
-\r
- @retval EFI_PROTOCOL_ERROR Malformed fw_cfg file name(s) have been found in\r
- WritePointer. Or, the WritePointer command\r
- references a file unknown to Tracker or the\r
- fw_cfg directory. Or, the pointer object to\r
- rewrite has invalid location, size, or initial\r
- relative value. Or, the pointer value to store\r
- does not fit in the given pointer size.\r
-\r
- @retval EFI_SUCCESS The pointer object inside the writeable fw_cfg\r
- file has been written. If S3Context is not NULL,\r
- then WritePointer has been condensed into\r
- S3Context.\r
-\r
- @return Error codes propagated from\r
- SaveCondensedWritePointerToS3Context(). The\r
- pointer object inside the writeable fw_cfg file\r
- has not been written.\r
-**/\r
-STATIC\r
-EFI_STATUS\r
-ProcessCmdWritePointer (\r
- IN CONST QEMU_LOADER_WRITE_POINTER *WritePointer,\r
- IN CONST ORDERED_COLLECTION *Tracker,\r
- IN OUT S3_CONTEXT *S3Context OPTIONAL\r
- )\r
-{\r
- RETURN_STATUS Status;\r
- FIRMWARE_CONFIG_ITEM PointerItem;\r
- UINTN PointerItemSize;\r
- ORDERED_COLLECTION_ENTRY *PointeeEntry;\r
- BLOB *PointeeBlob;\r
- UINT64 PointerValue;\r
-\r
- if (WritePointer->PointerFile[QEMU_LOADER_FNAME_SIZE - 1] != '\0' ||\r
- WritePointer->PointeeFile[QEMU_LOADER_FNAME_SIZE - 1] != '\0') {\r
- DEBUG ((DEBUG_ERROR, "%a: malformed file name\n", __FUNCTION__));\r
- return EFI_PROTOCOL_ERROR;\r
- }\r
-\r
- Status = QemuFwCfgFindFile ((CONST CHAR8 *)WritePointer->PointerFile,\r
- &PointerItem, &PointerItemSize);\r
- PointeeEntry = OrderedCollectionFind (Tracker, WritePointer->PointeeFile);\r
- if (RETURN_ERROR (Status) || PointeeEntry == NULL) {\r
- DEBUG ((DEBUG_ERROR,\r
- "%a: invalid fw_cfg file or blob reference \"%a\" / \"%a\"\n",\r
- __FUNCTION__, WritePointer->PointerFile, WritePointer->PointeeFile));\r
- return EFI_PROTOCOL_ERROR;\r
- }\r
-\r
- if ((WritePointer->PointerSize != 1 && WritePointer->PointerSize != 2 &&\r
- WritePointer->PointerSize != 4 && WritePointer->PointerSize != 8) ||\r
- (PointerItemSize < WritePointer->PointerSize) ||\r
- (PointerItemSize - WritePointer->PointerSize <\r
- WritePointer->PointerOffset)) {\r
- DEBUG ((DEBUG_ERROR, "%a: invalid pointer location or size in \"%a\"\n",\r
- __FUNCTION__, WritePointer->PointerFile));\r
- return EFI_PROTOCOL_ERROR;\r
- }\r
-\r
- PointeeBlob = OrderedCollectionUserStruct (PointeeEntry);\r
- PointerValue = WritePointer->PointeeOffset;\r
- if (PointerValue >= PointeeBlob->Size) {\r
- DEBUG ((DEBUG_ERROR, "%a: invalid PointeeOffset\n", __FUNCTION__));\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)PointeeBlob->Base <= MAX_ADDRESS - PointeeBlob->Size);\r
-\r
- PointerValue += (UINT64)(UINTN)PointeeBlob->Base;\r
- if (WritePointer->PointerSize < 8 &&\r
- RShiftU64 (PointerValue, WritePointer->PointerSize * 8) != 0) {\r
- DEBUG ((DEBUG_ERROR, "%a: pointer value unrepresentable in \"%a\"\n",\r
- __FUNCTION__, WritePointer->PointerFile));\r
- return EFI_PROTOCOL_ERROR;\r
- }\r
-\r
- //\r
- // If S3 is enabled, we have to capture the below fw_cfg actions in condensed\r
- // form, to be replayed during S3 resume.\r
- //\r
- if (S3Context != NULL) {\r
- EFI_STATUS SaveStatus;\r
-\r
- SaveStatus = SaveCondensedWritePointerToS3Context (\r
- S3Context,\r
- (UINT16)PointerItem,\r
- WritePointer->PointerSize,\r
- WritePointer->PointerOffset,\r
- PointerValue\r
- );\r
- if (EFI_ERROR (SaveStatus)) {\r
- return SaveStatus;\r
- }\r
- }\r
-\r
- QemuFwCfgSelectItem (PointerItem);\r
- QemuFwCfgSkipBytes (WritePointer->PointerOffset);\r
- QemuFwCfgWriteBytes (WritePointer->PointerSize, &PointerValue);\r
-\r
- //\r
- // Because QEMU has now learned PointeeBlob->Base, we must mark PointeeBlob\r
- // as unreleasable, for the case when the whole linker/loader script is\r
- // handled successfully.\r
- //\r
- PointeeBlob->HostsOnlyTableData = FALSE;\r
-\r
- DEBUG ((DEBUG_VERBOSE, "%a: PointerFile=\"%a\" PointeeFile=\"%a\" "\r
- "PointerOffset=0x%x PointeeOffset=0x%x PointerSize=%d\n", __FUNCTION__,\r
- WritePointer->PointerFile, WritePointer->PointeeFile,\r
- WritePointer->PointerOffset, WritePointer->PointeeOffset,\r
- WritePointer->PointerSize));\r
- return EFI_SUCCESS;\r
-}\r
-\r
-\r
-/**\r
- Undo a QEMU_LOADER_WRITE_POINTER command.\r
-\r
- This function revokes (zeroes out) a guest memory reference communicated to\r
- QEMU earlier. The caller is responsible for invoking this function only on\r
- such QEMU_LOADER_WRITE_POINTER commands that have been successfully processed\r
- by ProcessCmdWritePointer().\r
-\r
- @param[in] WritePointer The QEMU_LOADER_WRITE_POINTER command to undo.\r
-**/\r
-STATIC\r
-VOID\r
-UndoCmdWritePointer (\r
- IN CONST QEMU_LOADER_WRITE_POINTER *WritePointer\r
- )\r
-{\r
- RETURN_STATUS Status;\r
- FIRMWARE_CONFIG_ITEM PointerItem;\r
- UINTN PointerItemSize;\r
- UINT64 PointerValue;\r
-\r
- Status = QemuFwCfgFindFile ((CONST CHAR8 *)WritePointer->PointerFile,\r
- &PointerItem, &PointerItemSize);\r
- ASSERT_RETURN_ERROR (Status);\r
-\r
- PointerValue = 0;\r
- QemuFwCfgSelectItem (PointerItem);\r
- QemuFwCfgSkipBytes (WritePointer->PointerOffset);\r
- QemuFwCfgWriteBytes (WritePointer->PointerSize, &PointerValue);\r
-\r
- DEBUG ((DEBUG_VERBOSE,\r
- "%a: PointerFile=\"%a\" PointerOffset=0x%x PointerSize=%d\n", __FUNCTION__,\r
- WritePointer->PointerFile, WritePointer->PointerOffset,\r
- WritePointer->PointerSize));\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 successfully 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
- @param[in,out] SeenPointers The ORDERED_COLLECTION tracking the absolute\r
- target addresses that have been pointed-to by\r
- QEMU_LOADER_ADD_POINTER commands thus far. If a\r
- target address is encountered for the first\r
- time, and it identifies an ACPI table that is\r
- different from RDST and XSDT, the table is\r
- installed. If a target address is seen for the\r
- second or later times, it is skipped without\r
- taking any action.\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 its\r
- absolute target address has been encountered\r
- before, or an ACPI table different from RSDT\r
- and XSDT has been installed (reflected by\r
- InstalledKey and NumInstalled), or RSDT or\r
- XSDT has been identified but not installed, or\r
- the fw_cfg blob pointed-into by AddPointer has\r
- been marked as hosting something else than\r
- just 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
- IN OUT ORDERED_COLLECTION *SeenPointers\r
- )\r
-{\r
- CONST ORDERED_COLLECTION_ENTRY *TrackerEntry;\r
- CONST ORDERED_COLLECTION_ENTRY *TrackerEntry2;\r
- ORDERED_COLLECTION_ENTRY *SeenPointerEntry;\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
- Status = OrderedCollectionInsert (\r
- SeenPointers,\r
- &SeenPointerEntry, // for reverting insertion in error case\r
- (VOID *)(UINTN)PointerValue\r
- );\r
- if (EFI_ERROR (Status)) {\r
- if (Status == RETURN_ALREADY_STARTED) {\r
- //\r
- // Already seen this pointer, don't try to process it again.\r
- //\r
- DEBUG ((\r
- DEBUG_VERBOSE,\r
- "%a: PointerValue=0x%Lx already processed, skipping.\n",\r
- __FUNCTION__,\r
- PointerValue\r
- ));\r
- Status = EFI_SUCCESS;\r
- }\r
- return Status;\r
- }\r
-\r
- Blob2Remaining -= (UINTN) PointerValue;\r
- DEBUG ((DEBUG_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 ((DEBUG_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 ((DEBUG_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 ((DEBUG_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 ((DEBUG_ERROR, "%a: can't install more than %d tables\n",\r
- __FUNCTION__, INSTALLED_TABLES_MAX));\r
- Status = EFI_OUT_OF_RESOURCES;\r
- goto RollbackSeenPointer;\r
- }\r
-\r
- Status = AcpiProtocol->InstallAcpiTable (AcpiProtocol,\r
- (VOID *)(UINTN)PointerValue, TableSize,\r
- &InstalledKey[*NumInstalled]);\r
- if (EFI_ERROR (Status)) {\r
- DEBUG ((DEBUG_ERROR, "%a: InstallAcpiTable(): %r\n", __FUNCTION__,\r
- Status));\r
- goto RollbackSeenPointer;\r
- }\r
- ++*NumInstalled;\r
- return EFI_SUCCESS;\r
-\r
-RollbackSeenPointer:\r
- OrderedCollectionDelete (SeenPointers, SeenPointerEntry, NULL);\r
- return Status;\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
-InstallQemuFwCfgTables (\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
- CONST QEMU_LOADER_ENTRY *WritePointerSubsetEnd;\r
- ORIGINAL_ATTRIBUTES *OriginalPciAttributes;\r
- UINTN OriginalPciAttributesCount;\r
- ORDERED_COLLECTION *AllocationsRestrictedTo32Bit;\r
- S3_CONTEXT *S3Context;\r
- ORDERED_COLLECTION *Tracker;\r
- UINTN *InstalledKey;\r
- INT32 Installed;\r
- ORDERED_COLLECTION_ENTRY *TrackerEntry, *TrackerEntry2;\r
- ORDERED_COLLECTION *SeenPointers;\r
- ORDERED_COLLECTION_ENTRY *SeenPointerEntry, *SeenPointerEntry2;\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 ((DEBUG_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
- EnablePciDecoding (&OriginalPciAttributes, &OriginalPciAttributesCount);\r
- QemuFwCfgSelectItem (FwCfgItem);\r
- QemuFwCfgReadBytes (FwCfgSize, LoaderStart);\r
- RestorePciDecoding (OriginalPciAttributes, OriginalPciAttributesCount);\r
- LoaderEnd = LoaderStart + FwCfgSize / sizeof *LoaderEntry;\r
-\r
- AllocationsRestrictedTo32Bit = NULL;\r
- Status = CollectAllocationsRestrictedTo32Bit (\r
- &AllocationsRestrictedTo32Bit,\r
- LoaderStart,\r
- LoaderEnd\r
- );\r
- if (EFI_ERROR (Status)) {\r
- goto FreeLoader;\r
- }\r
-\r
- S3Context = NULL;\r
- if (QemuFwCfgS3Enabled ()) {\r
- //\r
- // Size the allocation pessimistically, assuming that all commands in the\r
- // script are QEMU_LOADER_WRITE_POINTER commands.\r
- //\r
- Status = AllocateS3Context (&S3Context, LoaderEnd - LoaderStart);\r
- if (EFI_ERROR (Status)) {\r
- goto FreeAllocationsRestrictedTo32Bit;\r
- }\r
- }\r
-\r
- Tracker = OrderedCollectionInit (BlobCompare, BlobKeyCompare);\r
- if (Tracker == NULL) {\r
- Status = EFI_OUT_OF_RESOURCES;\r
- goto FreeS3Context;\r
- }\r
-\r
- //\r
- // first pass: process the commands\r
- //\r
- // "WritePointerSubsetEnd" points one past the last successful\r
- // QEMU_LOADER_WRITE_POINTER command. Now when we're about to start the first\r
- // pass, no such command has been encountered yet.\r
- //\r
- WritePointerSubsetEnd = LoaderStart;\r
- for (LoaderEntry = LoaderStart; LoaderEntry < LoaderEnd; ++LoaderEntry) {\r
- switch (LoaderEntry->Type) {\r
- case QemuLoaderCmdAllocate:\r
- Status = ProcessCmdAllocate (\r
- &LoaderEntry->Command.Allocate,\r
- Tracker,\r
- AllocationsRestrictedTo32Bit\r
- );\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
- case QemuLoaderCmdWritePointer:\r
- Status = ProcessCmdWritePointer (&LoaderEntry->Command.WritePointer,\r
- Tracker, S3Context);\r
- if (!EFI_ERROR (Status)) {\r
- WritePointerSubsetEnd = LoaderEntry + 1;\r
- }\r
- break;\r
-\r
- default:\r
- DEBUG ((DEBUG_VERBOSE, "%a: unknown loader command: 0x%x\n",\r
- __FUNCTION__, LoaderEntry->Type));\r
- break;\r
- }\r
-\r
- if (EFI_ERROR (Status)) {\r
- goto RollbackWritePointersAndFreeTracker;\r
- }\r
- }\r
-\r
- InstalledKey = AllocatePool (INSTALLED_TABLES_MAX * sizeof *InstalledKey);\r
- if (InstalledKey == NULL) {\r
- Status = EFI_OUT_OF_RESOURCES;\r
- goto RollbackWritePointersAndFreeTracker;\r
- }\r
-\r
- SeenPointers = OrderedCollectionInit (PointerCompare, PointerCompare);\r
- if (SeenPointers == NULL) {\r
- Status = EFI_OUT_OF_RESOURCES;\r
- goto FreeKeys;\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 (\r
- &LoaderEntry->Command.AddPointer,\r
- Tracker,\r
- AcpiProtocol,\r
- InstalledKey,\r
- &Installed,\r
- SeenPointers\r
- );\r
- if (EFI_ERROR (Status)) {\r
- goto UninstallAcpiTables;\r
- }\r
- }\r
- }\r
-\r
- //\r
- // Translating the condensed QEMU_LOADER_WRITE_POINTER commands to ACPI S3\r
- // Boot Script opcodes has to be the last operation in this function, because\r
- // if it succeeds, it cannot be undone.\r
- //\r
- if (S3Context != NULL) {\r
- Status = TransferS3ContextToBootScript (S3Context);\r
- if (EFI_ERROR (Status)) {\r
- goto UninstallAcpiTables;\r
- }\r
- //\r
- // Ownership of S3Context has been transferred.\r
- //\r
- S3Context = NULL;\r
- }\r
-\r
-UninstallAcpiTables:\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 ((DEBUG_INFO, "%a: installed %d tables\n", __FUNCTION__, Installed));\r
- }\r
-\r
- for (SeenPointerEntry = OrderedCollectionMin (SeenPointers);\r
- SeenPointerEntry != NULL;\r
- SeenPointerEntry = SeenPointerEntry2) {\r
- SeenPointerEntry2 = OrderedCollectionNext (SeenPointerEntry);\r
- OrderedCollectionDelete (SeenPointers, SeenPointerEntry, NULL);\r
- }\r
- OrderedCollectionUninit (SeenPointers);\r
-\r
-FreeKeys:\r
- FreePool (InstalledKey);\r
-\r
-RollbackWritePointersAndFreeTracker:\r
- //\r
- // In case of failure, revoke any allocation addresses that were communicated\r
- // to QEMU previously, before we release all the blobs.\r
- //\r
- if (EFI_ERROR (Status)) {\r
- LoaderEntry = WritePointerSubsetEnd;\r
- while (LoaderEntry > LoaderStart) {\r
- --LoaderEntry;\r
- if (LoaderEntry->Type == QemuLoaderCmdWritePointer) {\r
- UndoCmdWritePointer (&LoaderEntry->Command.WritePointer);\r
- }\r
- }\r
- }\r
-\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 ((DEBUG_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
-FreeS3Context:\r
- if (S3Context != NULL) {\r
- ReleaseS3Context (S3Context);\r
- }\r
-\r
-FreeAllocationsRestrictedTo32Bit:\r
- ReleaseAllocationsRestrictedTo32Bit (AllocationsRestrictedTo32Bit);\r
-\r
-FreeLoader:\r
- FreePool (LoaderStart);\r
-\r
- return Status;\r
-}\r
projects / mirror_edk2.git / commitdiff