diff options
| -rw-r--r-- | OvmfPkg/AcpiPlatformDxe/Qemu.c | 338 |
1 files changed, 1 insertions, 337 deletions
diff --git a/OvmfPkg/AcpiPlatformDxe/Qemu.c b/OvmfPkg/AcpiPlatformDxe/Qemu.c index 70f3ff6426..ef2ba114b6 100644 --- a/OvmfPkg/AcpiPlatformDxe/Qemu.c +++ b/OvmfPkg/AcpiPlatformDxe/Qemu.c @@ -518,272 +518,6 @@ QemuInstallAcpiTable ( /**
- Check if an array of bytes starts with an RSD PTR structure.
-
- Checksum is ignored.
-
- @param[in] Buffer The array to check.
-
- @param[in] Size Number of bytes in Buffer.
-
- @param[out] RsdpSize If the function returns EFI_SUCCESS, this parameter
- contains the size of the detected RSD PTR structure.
-
- @retval EFI_SUCCESS RSD PTR structure detected at the beginning of
- Buffer, and its advertised size does not exceed
- Size.
-
- @retval EFI_PROTOCOL_ERROR RSD PTR structure detected at the beginning of
- Buffer, but it has inconsistent size.
-
- @retval EFI_NOT_FOUND RSD PTR structure not found.
-
-**/
-
-STATIC
-EFI_STATUS
-CheckRsdp (
- IN CONST VOID *Buffer,
- IN UINTN Size,
- OUT UINTN *RsdpSize
- )
-{
- CONST UINT64 *Signature;
- CONST EFI_ACPI_1_0_ROOT_SYSTEM_DESCRIPTION_POINTER *Rsdp1;
- CONST EFI_ACPI_2_0_ROOT_SYSTEM_DESCRIPTION_POINTER *Rsdp2;
-
- if (Size < sizeof *Signature) {
- return EFI_NOT_FOUND;
- }
- Signature = Buffer;
-
- if (*Signature != EFI_ACPI_1_0_ROOT_SYSTEM_DESCRIPTION_POINTER_SIGNATURE) {
- return EFI_NOT_FOUND;
- }
-
- //
- // Signature found -- from this point on we can only report
- // EFI_PROTOCOL_ERROR or EFI_SUCCESS.
- //
- if (Size < sizeof *Rsdp1) {
- return EFI_PROTOCOL_ERROR;
- }
- Rsdp1 = Buffer;
-
- if (Rsdp1->Reserved == 0) {
- //
- // ACPI 1.0 doesn't include the Length field
- //
- *RsdpSize = sizeof *Rsdp1;
- return EFI_SUCCESS;
- }
-
- if (Size < sizeof *Rsdp2) {
- return EFI_PROTOCOL_ERROR;
- }
- Rsdp2 = Buffer;
-
- if (Size < Rsdp2->Length || Rsdp2->Length < sizeof *Rsdp2) {
- return EFI_PROTOCOL_ERROR;
- }
-
- *RsdpSize = Rsdp2->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
-
-/**
- Download one ACPI table data file from QEMU and interpret it.
-
- @param[in] FwCfgFile The NUL-terminated name of the fw_cfg file to
- download and interpret.
-
- @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 keys of the ACPI tables
- that the function has installed from the fw_cfg
- file. The array reflects installed tables even
- if the function returns with an error.
-
- @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 updated to the new cumulative count
- of the keys stored in InstalledKey; the value
- reflects installed tables even if the function
- returns with an error.
-
- @retval EFI_INVALID_PARAMETER NumInstalled is outside the allowed range on
- input.
-
- @retval EFI_UNSUPPORTED Firmware configuration is unavailable.
-
- @retval EFI_NOT_FOUND The host doesn't export the requested fw_cfg
- file.
-
- @retval EFI_OUT_OF_RESOURCES Memory allocation failed, or no more room in
- InstalledKey.
-
- @retval EFI_PROTOCOL_ERROR Found truncated or invalid ACPI table header
- in the fw_cfg contents.
-
- @return Status codes returned by
- AcpiProtocol->InstallAcpiTable().
-
-**/
-
-STATIC
-EFI_STATUS
-InstallQemuLinkedTables (
- IN CONST CHAR8 *FwCfgFile,
- IN EFI_ACPI_TABLE_PROTOCOL *AcpiProtocol,
- IN OUT UINTN InstalledKey[INSTALLED_TABLES_MAX],
- IN OUT INT32 *NumInstalled
- )
-{
- EFI_STATUS Status;
- FIRMWARE_CONFIG_ITEM TablesFile;
- UINTN TablesFileSize;
- UINT8 *Tables;
- UINTN Processed;
-
- if (*NumInstalled < 0 || *NumInstalled > INSTALLED_TABLES_MAX) {
- return EFI_INVALID_PARAMETER;
- }
-
- Status = QemuFwCfgFindFile (FwCfgFile, &TablesFile, &TablesFileSize);
- if (EFI_ERROR (Status)) {
- DEBUG ((EFI_D_ERROR, "%a: \"%a\" unavailable: %r\n", __FUNCTION__,
- FwCfgFile, Status));
- return Status;
- }
-
- Tables = AllocatePool (TablesFileSize);
- if (Tables == NULL) {
- return EFI_OUT_OF_RESOURCES;
- }
-
- QemuFwCfgSelectItem (TablesFile);
- QemuFwCfgReadBytes (TablesFileSize, Tables);
-
- Processed = 0;
- while (Processed < TablesFileSize) {
- UINTN Remaining;
- UINTN RsdpSize;
- EFI_ACPI_DESCRIPTION_HEADER *Probe;
-
- Remaining = TablesFileSize - Processed;
-
- //
- // See if we're looking at an RSD PTR structure.
- //
- RsdpSize = 0;
- Status = CheckRsdp (Tables + Processed, Remaining, &RsdpSize);
- if (Status == EFI_PROTOCOL_ERROR) {
- //
- // RSD PTR found but its size is inconsistent; abort processing. (Note
- // that "RSD PTR found" excludes the NUL-padding case by definition.)
- //
- break;
- }
- if (!EFI_ERROR (Status)) {
- //
- // Consistent RSD PTR found, skip it.
- //
- DEBUG ((EFI_D_VERBOSE, "%a: \"%a\" offset 0x%016Lx: RSD PTR "
- "Length=0x%08x\n", __FUNCTION__, FwCfgFile, (UINT64)Processed,
- (UINT32)RsdpSize));
- Processed += RsdpSize;
- continue;
- }
- ASSERT (Status == EFI_NOT_FOUND);
-
- //
- // What we're looking at is not an RSD PTR structure; attempt to parse it
- // as an ACPI table.
- //
- if (Remaining < sizeof *Probe) {
- Status = EFI_PROTOCOL_ERROR;
- break;
- }
-
- Probe = (EFI_ACPI_DESCRIPTION_HEADER *) (Tables + Processed);
- if (Remaining < Probe->Length || Probe->Length < sizeof *Probe) {
- Status = EFI_PROTOCOL_ERROR;
- break;
- }
-
- DEBUG ((EFI_D_VERBOSE, "%a: \"%a\" offset 0x%016Lx:"
- " Signature=\"%-4.4a\" Length=0x%08x\n",
- __FUNCTION__, FwCfgFile, (UINT64) Processed,
- (CONST CHAR8 *) &Probe->Signature, Probe->Length));
-
- //
- // skip automatically handled "root" tables: RSDT, XSDT
- //
- if (Probe->Signature !=
- EFI_ACPI_1_0_ROOT_SYSTEM_DESCRIPTION_TABLE_SIGNATURE &&
- Probe->Signature !=
- EFI_ACPI_2_0_EXTENDED_SYSTEM_DESCRIPTION_TABLE_SIGNATURE) {
- if (*NumInstalled == INSTALLED_TABLES_MAX) {
- DEBUG ((EFI_D_ERROR, "%a: can't install more than %d tables\n",
- __FUNCTION__, INSTALLED_TABLES_MAX));
- Status = EFI_OUT_OF_RESOURCES;
- break;
- }
-
- Status = AcpiProtocol->InstallAcpiTable (AcpiProtocol, Probe,
- Probe->Length, &InstalledKey[*NumInstalled]);
- if (EFI_ERROR (Status)) {
- DEBUG ((EFI_D_ERROR,
- "%a: failed to install table \"%-4.4a\" at \"%a\" offset 0x%Lx: "
- "%r\n", __FUNCTION__, (CONST CHAR8 *)&Probe->Signature, FwCfgFile,
- (UINT64) Processed, Status));
- break;
- }
-
- ++*NumInstalled;
- }
-
- Processed += Probe->Length;
- }
-
- //
- // NUL-padding at the end is accepted
- //
- if (Status == EFI_PROTOCOL_ERROR) {
- UINTN ErrorLocation;
-
- ErrorLocation = Processed;
- while (Processed < TablesFileSize && Tables[Processed] == '\0') {
- ++Processed;
- }
- if (Processed < TablesFileSize) {
- DEBUG ((EFI_D_ERROR, "%a: truncated or invalid ACPI table header at "
- "\"%a\" offset 0x%Lx\n", __FUNCTION__, FwCfgFile,
- (UINT64)ErrorLocation));
- }
- }
-
- if (Processed == TablesFileSize) {
- Status = EFI_SUCCESS;
- } else {
- ASSERT (EFI_ERROR (Status));
- }
-
- FreePool (Tables);
- return Status;
-}
-
-/**
Download all ACPI table data files from QEMU and interpret them.
@param[in] AcpiProtocol The ACPI table protocol used to install tables.
@@ -809,75 +543,5 @@ InstallAllQemuLinkedTables ( IN EFI_ACPI_TABLE_PROTOCOL *AcpiProtocol
)
{
- UINTN *InstalledKey;
- INT32 Installed;
- EFI_STATUS Status;
- FIRMWARE_CONFIG_ITEM LoaderItem;
- UINTN LoaderSize;
- UINT8 *Loader;
- QEMU_LOADER_ENTRY *Entry, *End;
-
- InstalledKey = AllocatePool (INSTALLED_TABLES_MAX * sizeof *InstalledKey);
- if (InstalledKey == NULL) {
- return EFI_OUT_OF_RESOURCES;
- }
- Installed = 0;
-
- Status = QemuFwCfgFindFile ("etc/table-loader", &LoaderItem, &LoaderSize);
- if (EFI_ERROR (Status)) {
- goto FreeInstalledKey;
- }
- if (LoaderSize % sizeof *Entry != 0) {
- Status = EFI_PROTOCOL_ERROR;
- goto FreeInstalledKey;
- }
-
- Loader = AllocatePool (LoaderSize);
- if (Loader == NULL) {
- Status = EFI_OUT_OF_RESOURCES;
- goto FreeInstalledKey;
- }
-
- QemuFwCfgSelectItem (LoaderItem);
- QemuFwCfgReadBytes (LoaderSize, Loader);
-
- Entry = (QEMU_LOADER_ENTRY *)Loader;
- End = (QEMU_LOADER_ENTRY *)(Loader + LoaderSize);
- while (Entry < End) {
- if (Entry->Type == QemuLoaderCmdAllocate) {
- QEMU_LOADER_ALLOCATE *Allocate;
-
- Allocate = &Entry->Command.Allocate;
- if (Allocate->File[sizeof Allocate->File - 1] != '\0') {
- Status = EFI_PROTOCOL_ERROR;
- break;
- }
-
- Status = InstallQemuLinkedTables ((CHAR8 *)Allocate->File, AcpiProtocol,
- InstalledKey, &Installed);
- if (EFI_ERROR (Status)) {
- ASSERT (Status != EFI_INVALID_PARAMETER);
- break;
- }
- }
- ++Entry;
- }
-
- FreePool (Loader);
-
- 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));
- }
-
-FreeInstalledKey:
- FreePool (InstalledKey);
- return Status;
+ return EFI_NOT_FOUND;
}
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