diff options
Diffstat (limited to 'MdeModulePkg/Universal/SmbiosDxe/SmbiosDxe.c')
| -rw-r--r-- | MdeModulePkg/Universal/SmbiosDxe/SmbiosDxe.c | 293 |
1 files changed, 292 insertions, 1 deletions
diff --git a/MdeModulePkg/Universal/SmbiosDxe/SmbiosDxe.c b/MdeModulePkg/Universal/SmbiosDxe/SmbiosDxe.c index 3cdb0b1ed7..400b0fa578 100644 --- a/MdeModulePkg/Universal/SmbiosDxe/SmbiosDxe.c +++ b/MdeModulePkg/Universal/SmbiosDxe/SmbiosDxe.c @@ -2,7 +2,7 @@ This code produces the Smbios protocol. It also responsible for constructing
SMBIOS table into system table.
-Copyright (c) 2009 - 2018, Intel Corporation. All rights reserved.<BR>
+Copyright (c) 2009 - 2021, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
@@ -148,6 +148,12 @@ SMBIOS_TABLE_3_0_ENTRY_POINT Smbios30EntryPointStructureData = { //
0
};
+
+IS_SMBIOS_TABLE_VALID_ENTRY mIsSmbiosTableValid[] = {
+ {&gUniversalPayloadSmbios3TableGuid, IsValidSmbios30Table },
+ {&gUniversalPayloadSmbiosTableGuid, IsValidSmbios20Table }
+};
+
/**
Get the full size of SMBIOS structure including optional strings that follow the formatted structure.
@@ -1409,6 +1415,290 @@ SmbiosTableConstruction ( }
/**
+ Validates a SMBIOS 2.0 table entry point.
+
+ @param TableEntry The SmBios table entry to validate.
+ @param TableAddress On exit, point to the smbios table addres.
+ @param TableMaximumSize On exit, point to the maximum size of the table.
+
+ @retval TRUE SMBIOS table entry point is valid.
+ @retval FALSE SMBIOS table entry point is malformed.
+
+**/
+STATIC
+BOOLEAN
+IsValidSmbios20Table (
+ IN VOID *TableEntry,
+ OUT VOID **TableAddress,
+ OUT UINTN *TableMaximumSize
+ )
+{
+ UINT8 Checksum;
+ SMBIOS_TABLE_ENTRY_POINT *SmbiosTable;
+ SmbiosTable = (SMBIOS_TABLE_ENTRY_POINT *) TableEntry;
+
+ if (CompareMem (SmbiosTable->AnchorString, "_SM_", 4) != 0) {
+ return FALSE;
+ }
+
+ if (CompareMem (SmbiosTable->IntermediateAnchorString, "_DMI_", 5) != 0) {
+ return FALSE;
+ }
+
+ //
+ // The actual value of the EntryPointLength should be 1Fh.
+ // However, it was incorrectly stated in version 2.1 of smbios specification.
+ // Therefore, 0x1F and 0x1E are both accepted.
+ //
+ if (SmbiosTable->EntryPointLength != 0x1E && SmbiosTable->EntryPointLength != sizeof (SMBIOS_TABLE_ENTRY_POINT)) {
+ return FALSE;
+ }
+
+ //
+ // MajorVersion should not be less than 2.
+ //
+ if (SmbiosTable->MajorVersion < 2) {
+ return FALSE;
+ }
+
+ //
+ // The whole struct check sum should be zero
+ //
+ Checksum = CalculateSum8 (
+ (UINT8 *) SmbiosTable,
+ SmbiosTable->EntryPointLength
+ );
+ if (Checksum != 0) {
+ return FALSE;
+ }
+
+ //
+ // The Intermediate Entry Point Structure check sum should be zero.
+ //
+ Checksum = CalculateSum8 (
+ (UINT8 *) SmbiosTable + OFFSET_OF (SMBIOS_TABLE_ENTRY_POINT, IntermediateAnchorString),
+ SmbiosTable->EntryPointLength - OFFSET_OF (SMBIOS_TABLE_ENTRY_POINT, IntermediateAnchorString)
+ );
+ if (Checksum != 0) {
+ return FALSE;
+ }
+
+ *TableAddress = (VOID *) (UINTN) SmbiosTable->TableAddress;
+ *TableMaximumSize = SmbiosTable->TableLength;
+ return TRUE;
+}
+
+/**
+ Validates a SMBIOS 3.0 table entry point.
+
+ @param TableEntry The SmBios table entry to validate.
+ @param TableAddress On exit, point to the smbios table addres.
+ @param TableMaximumSize On exit, point to the maximum size of the table.
+
+ @retval TRUE SMBIOS table entry point is valid.
+ @retval FALSE SMBIOS table entry point is malformed.
+
+**/
+STATIC
+BOOLEAN
+IsValidSmbios30Table (
+ IN VOID *TableEntry,
+ OUT VOID **TableAddress,
+ OUT UINTN *TableMaximumSize
+ )
+{
+ UINT8 Checksum;
+ SMBIOS_TABLE_3_0_ENTRY_POINT *SmbiosTable;
+ SmbiosTable = (SMBIOS_TABLE_3_0_ENTRY_POINT *) TableEntry;
+
+ if (CompareMem (SmbiosTable->AnchorString, "_SM3_", 5) != 0) {
+ return FALSE;
+ }
+ if (SmbiosTable->EntryPointLength < sizeof (SMBIOS_TABLE_3_0_ENTRY_POINT)) {
+ return FALSE;
+ }
+ if (SmbiosTable->MajorVersion < 3) {
+ return FALSE;
+ }
+
+ //
+ // The whole struct check sum should be zero
+ //
+ Checksum = CalculateSum8 (
+ (UINT8 *) SmbiosTable,
+ SmbiosTable->EntryPointLength
+ );
+ if (Checksum != 0) {
+ return FALSE;
+ }
+
+ *TableAddress = (VOID *) (UINTN) SmbiosTable->TableAddress;
+ *TableMaximumSize = SmbiosTable->TableMaximumSize;
+ return TRUE;
+}
+
+/**
+ Parse an existing SMBIOS table and insert it using SmbiosAdd.
+
+ @param ImageHandle The EFI_HANDLE to this driver.
+ @param Smbios The SMBIOS table to parse.
+ @param Length The length of the SMBIOS table.
+
+ @retval EFI_SUCCESS SMBIOS table was parsed and installed.
+ @retval EFI_OUT_OF_RESOURCES Record was not added due to lack of system resources.
+ @retval EFI_INVALID_PARAMETER Smbios is not a correct smbios table
+
+**/
+STATIC
+EFI_STATUS
+ParseAndAddExistingSmbiosTable (
+ IN EFI_HANDLE ImageHandle,
+ IN SMBIOS_STRUCTURE_POINTER Smbios,
+ IN UINTN Length
+ )
+{
+ EFI_STATUS Status;
+ CHAR8 *String;
+ EFI_SMBIOS_HANDLE SmbiosHandle;
+ SMBIOS_STRUCTURE_POINTER SmbiosEnd;
+
+ SmbiosEnd.Raw = Smbios.Raw + Length;
+
+ if (Smbios.Raw >= SmbiosEnd.Raw || Smbios.Raw == NULL) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ do {
+ //
+ // Make sure not to access memory beyond SmbiosEnd
+ //
+ if (Smbios.Raw + sizeof (SMBIOS_STRUCTURE) > SmbiosEnd.Raw ||
+ Smbios.Raw + sizeof (SMBIOS_STRUCTURE) < Smbios.Raw) {
+ return EFI_INVALID_PARAMETER;
+ }
+ //
+ // Check for end marker
+ //
+ if (Smbios.Hdr->Type == SMBIOS_TYPE_END_OF_TABLE) {
+ break;
+ }
+ //
+ // Make sure not to access memory beyond SmbiosEnd
+ // Each structure shall be terminated by a double-null (0000h).
+ //
+ if (Smbios.Raw + Smbios.Hdr->Length + 2 * sizeof (UINT8) > SmbiosEnd.Raw ||
+ Smbios.Raw + Smbios.Hdr->Length + 2 * sizeof (UINT8) < Smbios.Raw) {
+ return EFI_INVALID_PARAMETER;
+ }
+ //
+ // Install the table
+ //
+ SmbiosHandle = Smbios.Hdr->Handle;
+ Status = SmbiosAdd (
+ &mPrivateData.Smbios,
+ ImageHandle,
+ &SmbiosHandle,
+ Smbios.Hdr
+ );
+
+ ASSERT_EFI_ERROR (Status);
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+ //
+ // Go to the next SMBIOS structure. Each SMBIOS structure may include 2 parts:
+ // 1. Formatted section; 2. Unformatted string section. So, 2 steps are needed
+ // to skip one SMBIOS structure.
+ //
+
+ //
+ // Step 1: Skip over formatted section.
+ //
+ String = (CHAR8 *) (Smbios.Raw + Smbios.Hdr->Length);
+
+ //
+ // Step 2: Skip over unformatted string section.
+ //
+ do {
+ //
+ // Each string is terminated with a NULL(00h) BYTE and the sets of strings
+ // is terminated with an additional NULL(00h) BYTE.
+ //
+ for ( ; *String != 0; String++) {
+ if ((UINTN) String >= (UINTN) SmbiosEnd.Raw - sizeof (UINT8)) {
+ return EFI_INVALID_PARAMETER;
+ }
+ }
+
+ if (*(UINT8 *) ++String == 0) {
+ //
+ // Pointer to the next SMBIOS structure.
+ //
+ Smbios.Raw = (UINT8 *) ++String;
+ break;
+ }
+ } while (TRUE);
+ } while (Smbios.Raw < SmbiosEnd.Raw);
+
+ return EFI_SUCCESS;
+}
+
+/**
+ Retrieve SMBIOS from Hob.
+ @param ImageHandle Module's image handle
+
+ @retval EFI_SUCCESS Smbios from Hob is installed.
+ @return EFI_NOT_FOUND Not found Smbios from Hob.
+ @retval Other No Smbios from Hob is installed.
+
+**/
+EFI_STATUS
+RetrieveSmbiosFromHob (
+ IN EFI_HANDLE ImageHandle
+ )
+{
+ EFI_STATUS Status;
+ UINTN Index;
+ SMBIOS_STRUCTURE_POINTER Smbios;
+ EFI_HOB_GUID_TYPE *GuidHob;
+ UNIVERSAL_PAYLOAD_SMBIOS_TABLE *SmBiosTableAdress;
+ UNIVERSAL_PAYLOAD_GENERIC_HEADER *GenericHeader;
+ VOID *TableAddress;
+ UINTN TableMaximumSize;
+
+ Status = EFI_NOT_FOUND;
+
+ for (Index = 0; Index < ARRAY_SIZE (mIsSmbiosTableValid); Index++) {
+ GuidHob = GetFirstGuidHob (mIsSmbiosTableValid[Index].Guid);
+ if (GuidHob == NULL) {
+ continue;
+ }
+ GenericHeader = (UNIVERSAL_PAYLOAD_GENERIC_HEADER *) GET_GUID_HOB_DATA (GuidHob);
+ if ((sizeof (UNIVERSAL_PAYLOAD_GENERIC_HEADER) <= GET_GUID_HOB_DATA_SIZE (GuidHob)) && (GenericHeader->Length <= GET_GUID_HOB_DATA_SIZE (GuidHob))) {
+ if (GenericHeader->Revision == UNIVERSAL_PAYLOAD_SMBIOS_TABLE_REVISION) {
+ //
+ // UNIVERSAL_PAYLOAD_SMBIOS_TABLE structure is used when Revision equals to UNIVERSAL_PAYLOAD_SMBIOS_TABLE_REVISION
+ //
+ SmBiosTableAdress = (UNIVERSAL_PAYLOAD_SMBIOS_TABLE *) GET_GUID_HOB_DATA (GuidHob);
+ if (GenericHeader->Length >= UNIVERSAL_PAYLOAD_SIZEOF_THROUGH_FIELD (UNIVERSAL_PAYLOAD_SMBIOS_TABLE, SmBiosEntryPoint)) {
+ if (mIsSmbiosTableValid[Index].IsValid ((VOID *) (UINTN )SmBiosTableAdress->SmBiosEntryPoint, &TableAddress, &TableMaximumSize)) {
+ Smbios.Raw = TableAddress;
+ Status = ParseAndAddExistingSmbiosTable (ImageHandle, Smbios, TableMaximumSize);
+ if (EFI_ERROR (Status)) {
+ DEBUG ((DEBUG_ERROR, "RetrieveSmbiosFromHob: Failed to parse preinstalled tables from Guid Hob\n"));
+ Status = EFI_UNSUPPORTED;
+ } else {
+ return EFI_SUCCESS;
+ }
+ }
+ }
+ }
+ }
+ }
+ return Status;
+}
+
+/**
Driver to produce Smbios protocol and pre-allocate 1 page for the final SMBIOS table.
@@ -1451,5 +1741,6 @@ SmbiosDriverEntryPoint ( &mPrivateData.Smbios
);
+ RetrieveSmbiosFromHob (ImageHandle);
return Status;
}
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