[edk2-devel] [Staging/Bug_1525_FmpDevicePkg_MultipleControllers_V2] Create V2 branch
Michael D Kinney
michael.d.kinney at intel.com
Fri May 24 17:02:05 UTC 2019
Hello,
I have created a V2 version of the edk2-staging branch
for BZ 1525.
https://bugzilla.tianocore.org/show_bug.cgi?id=1525
https://github.com/tianocore/edk2-staging/tree/Bug_1525_FmpDevicePkg_MultipleControllers_V2
This branch has been rebased on edk2/master and has
also updated all license headers for BSD+Patent with
SPDX identifiers.
A few additional changes have been made to address some
corner cases when supporting multiple controllers. The
details of each issue and the recommended solution is
summarized in the BZ.
Please review the BZ and the code details in the new
branch and provide feedback either on the mailing list
or on in BZ 1525.
The deadline for this BZ has also been updated to show
that the goal is to integrate this content into edk2/master
after edk2-stable201905.
Thanks,
Mike
> -----Original Message-----
> From: Kinney, Michael D
> Sent: Monday, April 22, 2019 7:42 AM
> To: Jin, Eric <eric.jin at intel.com>;
> devel at edk2.groups.io; Kinney, Michael D
> <michael.d.kinney at intel.com>
> Subject: RE:
> [Staging/Bug_1525_FmpDevicePkg_MultipleControllers][PAT
> CH] MdeModulePkg/EsrtFmpDxe: Detect duplicate
> GUID/HardwareInstance
>
> Reviewed-by: Michael D Kinney
> <michael.d.kinney at intel.com>
>
> > -----Original Message-----
> > From: Jin, Eric
> > Sent: Sunday, April 21, 2019 10:48 PM
> > To: devel at edk2.groups.io
> > Cc: Kinney, Michael D <michael.d.kinney at intel.com>
> > Subject:
> >
> [Staging/Bug_1525_FmpDevicePkg_MultipleControllers][PAT
> > CH] MdeModulePkg/EsrtFmpDxe: Detect duplicate
> > GUID/HardwareInstance
> >
> > https://bugzilla.tianocore.org/show_bug.cgi?id=1525
> >
> > Fix the following issues identified in #1525:
> > EsrtFmpDxe - The check for more than one instance
> > of the same
> > GUID/HardwareInstance is not being done at the
> > right point.
> > It is being done as
> EFI_FIRMWARE_IMAGE_DESCRIPTORs
> > are being merged
> > into an ESRT Table Entry. This means a case will
> > be missed if
> > there are 3 EFI_FIRMWARE_IMAGE_DESCRIPTORs with
> the
> > first and 3rd
> > one being having the same GUID/HardwareInstance.
> > Instead, this check
> > should be performed across all
> > EFI_FIRMWARE_IMAGE_DESCRIPTORs in the
> > entire handle database.
> >
> > Build a table of GUID/HardwareInstance pairs from all
> > the
> > EFI_FIRMWARE_IMAGE_DESCRIPTORs from all FMP
> instances.
> > If a duplicate
> > is found, then generate a DEBUG_ERROR message,
> generate
> > an ASSERT(),
> > and ignore the duplicate
> EFI_FIRMWARE_IMAGE_DESCRIPTOR.
> >
> > Add an internal worker function called
> > FmpGetFirmwareImageDescriptor()
> > that retrieves the list of
> > EFI_FIRMWARE_IMAGE_DESCRIPTORs from a single
> > FMP instance and returns the descriptors in an
> > allocated buffer. This
> > function is used to get the descriptors used to build
> > the table of
> > unique GUID/HardwareInstance pairs. It is then used
> > again to generate
> > the ESRT Table from all the
> > EFI_FIRMWARE_IMAGE_DESCRIPTORs from all the
> > FMP instances. 2 passes are performed so the total
> > number of
> > descriptors is known. This allows the correct sized
> > buffers to always
> > be allocated and the extra logic to grow tables is
> > removed.
> >
> > CC: Eric Jin <eric.jin at intel.com>
> > CC: Michael D Kinney <michael.d.kinney at intel.com>
> > Contributed-under: TianoCore Contribution Agreement
> 1.1
> > Signed-off-by: Eric Jin <eric.jin at intel.com>
> > ---
> > MdeModulePkg/Universal/EsrtFmpDxe/EsrtFmp.c | 461
> > ++++++++++----------
> > 1 file changed, 238 insertions(+), 223 deletions(-)
> >
> > diff --git
> > a/MdeModulePkg/Universal/EsrtFmpDxe/EsrtFmp.c
> > b/MdeModulePkg/Universal/EsrtFmpDxe/EsrtFmp.c
> > index 848bd44e9d..9c273fe79e 100644
> > --- a/MdeModulePkg/Universal/EsrtFmpDxe/EsrtFmp.c
> > +++ b/MdeModulePkg/Universal/EsrtFmpDxe/EsrtFmp.c
> > @@ -38,6 +38,22 @@
> > #include <Guid/EventGroup.h>
> > #include <Guid/SystemResourceTable.h>
> >
> > +///
> > +/// Structure for array of unique
> > GUID/HardwareInstance pairs from the
> > +/// current set of EFI_FIRMWARE_IMAGE_DESCRIPTORs
> from
> > all FMP Protocols.
> > +///
> > +typedef struct {
> > + ///
> > + /// A unique GUID identifying the firmware image
> > type.
> > + ///
> > + EFI_GUID ImageTypeGuid;
> > + ///
> > + /// An optional number to identify the unique
> > hardware instance within the
> > + /// system for devices that may have multiple
> > instances whenever possible.
> > + ///
> > + UINT64 HardwareInstance;
> > +} GUID_HARDWAREINSTANCE_PAIR;
> > +
> > /**
> > Print ESRT to debug console.
> >
> > @@ -50,11 +66,6 @@ PrintTable (
> > IN EFI_SYSTEM_RESOURCE_TABLE *Table
> > );
> >
> > -//
> > -// Number of ESRT entries to grow by each time we
> run
> > out of room
> > -//
> > -#define GROWTH_STEP 10
> > -
> > /**
> > Install EFI System Resource Table into the UEFI
> > Configuration Table
> >
> > @@ -118,172 +129,129 @@ IsSystemFmp (
> > }
> >
> > /**
> > - Function to create a single ESRT Entry and add it
> to
> > the ESRT
> > - given a FMP descriptor. If the guid is already in
> > the ESRT, then the ESRT
> > - entry is updated. The ESRT will grow if it does
> not
> > have enough room.
> > -
> > - @param[in, out] Table On input,
> pointer
> > to the pointer to the ESRT.
> > - On output, same
> as
> > input or pointer to the pointer
> > - to new enlarged
> > ESRT.
> > - @param[in] FmpImageInfoBuf Pointer to the
> > EFI_FIRMWARE_IMAGE_DESCRIPTOR.
> > - @param[in] FmpVersion FMP Version.
> > -
> > - @return Status code.
> > + Function to create a single ESRT Entry and add it
> to
> > the ESRT with
> > + a given FMP descriptor. If the GUID is already in
> > the ESRT, then the ESRT
> > + entry is updated.
> > +
> > + @param[in,out] Table Pointer to the
> > ESRT Table.
> > + @param[in,out] HardwareInstances Pointer to the
> > GUID_HARDWAREINSTANCE_PAIR.
> > + @param[in,out] NumberOfDescriptors The number of
> > EFI_FIRMWARE_IMAGE_DESCRIPTORs.
> > + @param[in] FmpImageInfoBuf Pointer to the
> > EFI_FIRMWARE_IMAGE_DESCRIPTOR.
> > + @param[in] FmpVersion FMP Version.
> > +
> > + @retval EFI_SUCCESS FmpImageInfoBuf was use
> to
> > fill in a new ESRT entry
> > + in Table.
> > + @retval EFI_SUCCESS The ImageTypeId GUID in
> > FmpImageInfoBuf matches an
> > + existing ESRT entry in
> > Table, and the information
> > + from FmpImageInfoBuf was
> > merged into the the existing
> > + ESRT entry.
> > + @retval EFI_UNSPOORTED The GUID/HardareInstance
> in
> > FmpImageInfoBuf has is a
> > + duplicate.
> >
> > **/
> > EFI_STATUS
> > CreateEsrtEntry (
> > - IN OUT EFI_SYSTEM_RESOURCE_TABLE **Table,
> > - IN OUT UINT64
> > **HardwareInstances,
> > - IN EFI_FIRMWARE_IMAGE_DESCRIPTOR
> *FmpImageInfoBuf,
> > - IN UINT32 FmpVersion
> > + IN OUT EFI_SYSTEM_RESOURCE_TABLE *Table,
> > + IN OUT GUID_HARDWAREINSTANCE_PAIR
> > *HardwareInstances,
> > + IN OUT UINT32
> > *NumberOfDescriptors,
> > + IN EFI_FIRMWARE_IMAGE_DESCRIPTOR
> > *FmpImageInfoBuf,
> > + IN UINT32 FmpVersion
> > )
> > {
> > UINTN Index;
> > EFI_SYSTEM_RESOURCE_ENTRY *Entry;
> > - UINTN NewSize;
> > - EFI_SYSTEM_RESOURCE_TABLE *NewTable;
> > - UINT64 *NewHardwareInstances;
> > UINT64 FmpHardwareInstance;
> >
> > - Index = 0;
> > - Entry = NULL;
> > + FmpHardwareInstance = 0;
> > + if (FmpVersion >= 3) {
> > + FmpHardwareInstance = FmpImageInfoBuf-
> > >HardwareInstance;
> > + }
> >
> > - Entry = (EFI_SYSTEM_RESOURCE_ENTRY *)((*Table) +
> 1);
> > //
> > - // Check to see if GUID is already in the table
> > + // Check to see of FmpImageInfoBuf
> > GUID/HardwareInstance is unique
> > //
> > - for (Index = 0; Index < (*Table)->FwResourceCount;
> > Index++) {
> > - if (CompareGuid (&Entry->FwClass,
> > &FmpImageInfoBuf->ImageTypeId)) {
> > - //
> > - // If HardwareInstance in ESRT and
> > FmpImageInfoBuf are the same value
> > - // for the same ImageTypeId GUID, then there
> is
> > more than one FMP
> > - // instance for the same FW device, which is
> an
> > error condition.
> > - // If FmpVersion is less than 3, then assume
> > HardwareInstance is 0.
> > - //
> > - FmpHardwareInstance = 0;
> > - if (FmpVersion >= 3) {
> > - FmpHardwareInstance = FmpImageInfoBuf-
> > >HardwareInstance;
> > - }
> > - if ((*HardwareInstances)[Index] ==
> > FmpHardwareInstance) {
> > - DEBUG ((DEBUG_ERROR, "EsrtFmpDxe: ESRT Entry
> > already exists for FMP Instance with GUID %g and
> > HardwareInstance %016lx\n", &Entry->FwClass,
> > (*HardwareInstances)[Index]));
> > - ASSERT ((*HardwareInstances)[Index] !=
> > FmpHardwareInstance);
> > + for (Index = 0; Index < *NumberOfDescriptors;
> > Index++) {
> > + if (CompareGuid
> > (&HardwareInstances[Index].ImageTypeGuid,
> > &FmpImageInfoBuf->ImageTypeId)) {
> > + if (HardwareInstances[Index].HardwareInstance
> ==
> > FmpHardwareInstance) {
> > + DEBUG ((DEBUG_ERROR, "EsrtFmpDxe: Duplicate
> > firmware image descriptor with GUID %g
> > HardwareInstance:0x%x\n", &FmpImageInfoBuf-
> > >ImageTypeId, FmpHardwareInstance));
> > + ASSERT (
> > + !CompareGuid
> > (&HardwareInstances[Index].ImageTypeGuid,
> > &FmpImageInfoBuf->ImageTypeId) ||
> > + HardwareInstances[Index].HardwareInstance
> !=
> > FmpHardwareInstance
> > + );
> > return EFI_UNSUPPORTED;
> > }
> > -
> > - DEBUG ((DEBUG_INFO, "EsrtFmpDxe: ESRT Entry
> > already exists for FMP Instance with GUID %g\n",
> > &Entry->FwClass));
> > -
> > - //
> > - // Set ESRT FwVersion to the smaller of the
> two
> > values
> > - //
> > - Entry->FwVersion = MIN (FmpImageInfoBuf-
> > >Version, Entry->FwVersion);
> > -
> > - //
> > - // VERSION 2 has Lowest Supported
> > - //
> > - if (FmpVersion >= 2) {
> > - //
> > - // Set ESRT LowestSupportedFwVersion to the
> > smaller of the two values
> > - //
> > - Entry->LowestSupportedFwVersion =
> > - MIN (
> > - FmpImageInfoBuf-
> > >LowestSupportedImageVersion,
> > - Entry->LowestSupportedFwVersion
> > - );
> > - }
> > -
> > - //
> > - // VERSION 3 supports last attempt values
> > - //
> > - if (FmpVersion >= 3) {
> > - //
> > - // Update the ESRT entry with the last
> attempt
> > status and last attempt
> > - // version from the first FMP instance whose
> > last attempt status is not
> > - // SUCCESS. If all FMP instances are
> SUCCESS,
> > then set version to the
> > - // smallest value from all FMP instances.
> > - //
> > - if (Entry->LastAttemptStatus ==
> > LAST_ATTEMPT_STATUS_SUCCESS) {
> > - if (FmpImageInfoBuf->LastAttemptStatus !=
> > LAST_ATTEMPT_STATUS_SUCCESS) {
> > - Entry->LastAttemptStatus =
> > FmpImageInfoBuf->LastAttemptStatus;
> > - Entry->LastAttemptVersion =
> > FmpImageInfoBuf->LastAttemptVersion;
> > - } else {
> > - Entry->LastAttemptVersion =
> > - MIN (
> > - FmpImageInfoBuf->LastAttemptVersion,
> > - Entry->LastAttemptVersion
> > - );
> > - }
> > - }
> > - }
> > -
> > - return EFI_SUCCESS;
> > }
> > - Entry++;
> > }
> >
> > //
> > - // Grow table if needed
> > + // Record new GUID/HardwareInstance pair
> > //
> > - if ((*Table)->FwResourceCount >= (*Table)-
> > >FwResourceCountMax) {
> > - NewSize = (((*Table)->FwResourceCountMax +
> > GROWTH_STEP) * sizeof (EFI_SYSTEM_RESOURCE_ENTRY)) +
> > sizeof (EFI_SYSTEM_RESOURCE_TABLE);
> > - NewTable = AllocateZeroPool (NewSize);
> > - if (NewTable == NULL) {
> > - DEBUG ((DEBUG_ERROR, "EsrtFmpDxe: Failed to
> > allocate memory larger table for ESRT. \n"));
> > - return EFI_OUT_OF_RESOURCES;
> > - }
> > - //
> > - // Copy the whole old table into new table
> buffer
> > - //
> > - CopyMem (
> > - NewTable,
> > - (*Table),
> > - (((*Table)->FwResourceCountMax) * sizeof
> > (EFI_SYSTEM_RESOURCE_ENTRY)) + sizeof
> > (EFI_SYSTEM_RESOURCE_TABLE)
> > - );
> > - //
> > - // Update max
> > - //
> > - NewTable->FwResourceCountMax = NewTable-
> > >FwResourceCountMax + GROWTH_STEP;
> > - //
> > - // Free old table
> > - //
> > - FreePool ((*Table));
> > - //
> > - // Reassign pointer to new table.
> > - //
> > - (*Table) = NewTable;
> > + CopyGuid
> >
> (&HardwareInstances[*NumberOfDescriptors].ImageTypeGuid
> > , &FmpImageInfoBuf->ImageTypeId);
> > +
> >
> HardwareInstances[*NumberOfDescriptors].HardwareInstanc
> > e = FmpHardwareInstance;
> > + *NumberOfDescriptors = *NumberOfDescriptors + 1;
> > +
> > + DEBUG ((DEBUG_INFO, "EsrtFmpDxe: Add new image
> > descriptor with GUID %g HardwareInstance:0x%x\n",
> > &FmpImageInfoBuf->ImageTypeId, FmpHardwareInstance));
> >
> > - NewSize = ((*Table)->FwResourceCountMax) *
> sizeof
> > (UINT64);
> > - NewHardwareInstances = AllocateZeroPool
> (NewSize);
> > - if (NewHardwareInstances == NULL) {
> > - DEBUG ((DEBUG_ERROR, "EsrtFmpDxe: Failed to
> > allocate memory larger table for Hardware
> > Instances.\n"));
> > - return EFI_OUT_OF_RESOURCES;
> > + //
> > + // Check to see if GUID is already in the ESRT
> table
> > + //
> > + Entry = (EFI_SYSTEM_RESOURCE_ENTRY *)(Table + 1);
> > + for (Index = 0; Index < Table->FwResourceCount;
> > Index++, Entry++) {
> > + if (!CompareGuid (&Entry->FwClass,
> > &FmpImageInfoBuf->ImageTypeId)) {
> > + continue;
> > }
> > + DEBUG ((DEBUG_INFO, "EsrtFmpDxe: ESRT Entry
> > already exists for FMP Instance with GUID %g\n",
> > &Entry->FwClass));
> > +
> > //
> > - // Copy the whole old table into new table
> buffer
> > + // Set ESRT FwVersion to the smaller of the two
> > values
> > //
> > - CopyMem (
> > - NewHardwareInstances,
> > - (*HardwareInstances),
> > - ((*Table)->FwResourceCountMax) * sizeof
> (UINT64)
> > - );
> > + Entry->FwVersion = MIN (FmpImageInfoBuf-
> >Version,
> > Entry->FwVersion);
> > +
> > //
> > - // Free old table
> > + // VERSION 2 has Lowest Supported
> > //
> > - FreePool ((*HardwareInstances));
> > + if (FmpVersion >= 2) {
> > + //
> > + // Set ESRT LowestSupportedFwVersion to the
> > smaller of the two values
> > + //
> > + Entry->LowestSupportedFwVersion =
> > + MIN (
> > + FmpImageInfoBuf-
> > >LowestSupportedImageVersion,
> > + Entry->LowestSupportedFwVersion
> > + );
> > + }
> > +
> > //
> > - // Reassign pointer to new table.
> > + // VERSION 3 supports last attempt values
> > //
> > - (*HardwareInstances) = NewHardwareInstances;
> > + if (FmpVersion >= 3) {
> > + //
> > + // Update the ESRT entry with the last attempt
> > status and last attempt
> > + // version from the first FMP instance whose
> > last attempt status is not
> > + // SUCCESS. If all FMP instances are SUCCESS,
> > then set version to the
> > + // smallest value from all FMP instances.
> > + //
> > + if (Entry->LastAttemptStatus ==
> > LAST_ATTEMPT_STATUS_SUCCESS) {
> > + if (FmpImageInfoBuf->LastAttemptStatus !=
> > LAST_ATTEMPT_STATUS_SUCCESS) {
> > + Entry->LastAttemptStatus =
> FmpImageInfoBuf-
> > >LastAttemptStatus;
> > + Entry->LastAttemptVersion =
> FmpImageInfoBuf-
> > >LastAttemptVersion;
> > + } else {
> > + Entry->LastAttemptVersion =
> > + MIN (
> > + FmpImageInfoBuf->LastAttemptVersion,
> > + Entry->LastAttemptVersion
> > + );
> > + }
> > + }
> > + }
> > +
> > + return EFI_SUCCESS;
> > }
> >
> > //
> > - // ESRT table has enough room for the new entry so
> > add new entry
> > - //
> > - Entry = (EFI_SYSTEM_RESOURCE_ENTRY *)(((UINT8
> > *)(*Table)) + sizeof (EFI_SYSTEM_RESOURCE_TABLE));
> > + // Add a new ESRT Table Entry
> > //
> > - // Move to the location of new entry
> > - //
> > - Entry = Entry + (*Table)->FwResourceCount;
> > + Entry = (EFI_SYSTEM_RESOURCE_ENTRY *)(Table + 1) +
> > Table->FwResourceCount;
> >
> > CopyGuid (&Entry->FwClass, &FmpImageInfoBuf-
> > >ImageTypeId);
> >
> > @@ -316,19 +284,87 @@ CreateEsrtEntry (
> > }
> >
> > //
> > - // VERSION 3 supports hardware instance
> > + // Increment the number of active ESRT Table
> Entries
> > //
> > - (*HardwareInstances)[(*Table)->FwResourceCount] =
> 0;
> > - if (FmpVersion >= 3) {
> > - (*HardwareInstances)[(*Table)->FwResourceCount]
> =
> > FmpImageInfoBuf->HardwareInstance;
> > + Table->FwResourceCount++;
> > +
> > + return EFI_SUCCESS;
> > +}
> > +
> > +/**
> > + Function to retrieve the
> > EFI_FIRMWARE_IMAGE_DESCRIPTOR from an FMP Instance.
> > + The returned buffer is allocated using
> > AllocatePool() and must be freed by the
> > + caller using FreePool().
> > +
> > + @param[in] Fmp Pointer to
> an
> > EFI_FIRMWARE_MANAGEMENT_PROTOCOL.
> > + @param[out] FmpImageInfoDescriptorVer Pointer to
> > the version number associated
> > + with the
> > returned EFI_FIRMWARE_IMAGE_DESCRIPTOR.
> > + @param[out] FmpImageInfoCount Pointer to
> > the number of the returned
> > +
> > EFI_FIRMWARE_IMAGE_DESCRIPTORs.
> > + @param[out] DescriptorSize Pointer to
> > the size, in bytes, of each
> > + returned
> > EFI_FIRMWARE_IMAGE_DESCRIPTOR.
> > +
> > + @return Pointer to the retrieved
> > EFI_FIRMWARE_IMAGE_DESCRIPTOR. If the
> > + descriptor can not be retrieved, then
> NULL
> > is returned.
> > +
> > +**/
> > +EFI_FIRMWARE_IMAGE_DESCRIPTOR *
> > +FmpGetFirmwareImageDescriptor (
> > + IN EFI_FIRMWARE_MANAGEMENT_PROTOCOL *Fmp,
> > + OUT UINT32
> > *FmpImageInfoDescriptorVer,
> > + OUT UINT8
> > *FmpImageInfoCount,
> > + OUT UINTN
> > *DescriptorSize
> > + )
> > +{
> > + EFI_STATUS Status;
> > + UINTN ImageInfoSize;
> > + UINT32 PackageVersion;
> > + CHAR16
> *PackageVersionName;
> > + EFI_FIRMWARE_IMAGE_DESCRIPTOR *FmpImageInfoBuf;
> > +
> > + ImageInfoSize = 0;
> > + Status = Fmp->GetImageInfo (
> > + Fmp, // FMP
> > Pointer
> > + &ImageInfoSize, //
> > Buffer Size (in this case 0)
> > + NULL, //
> NULL
> > so we can get size
> > + FmpImageInfoDescriptorVer, //
> > DescriptorVersion
> > + FmpImageInfoCount, //
> > DescriptorCount
> > + DescriptorSize, //
> > DescriptorSize
> > + &PackageVersion, //
> > PackageVersion
> > + &PackageVersionName //
> > PackageVersionName
> > + );
> > + if (Status != EFI_BUFFER_TOO_SMALL) {
> > + DEBUG ((DEBUG_ERROR, "EsrtFmpDxe: Unexpected
> > Failure in GetImageInfo. Status = %r\n", Status));
> > + return NULL;
> > }
> >
> > - //
> > - // Increment resource count
> > - //
> > - (*Table)->FwResourceCount++;
> > + FmpImageInfoBuf = AllocateZeroPool
> (ImageInfoSize);
> > + if (FmpImageInfoBuf == NULL) {
> > + DEBUG ((DEBUG_ERROR, "EsrtFmpDxe: Failed to get
> > memory for FMP descriptor.\n"));
> > + return NULL;
> > + }
> >
> > - return EFI_SUCCESS;
> > + PackageVersionName = NULL;
> > + Status = Fmp->GetImageInfo (
> > + Fmp, // FMP
> > Pointer
> > + &ImageInfoSize, //
> > ImageInfoSize
> > + FmpImageInfoBuf, //
> > ImageInfo
> > + FmpImageInfoDescriptorVer, //
> > DescriptorVersion
> > + FmpImageInfoCount, //
> > DescriptorCount
> > + DescriptorSize, //
> > DescriptorSize
> > + &PackageVersion, //
> > PackageVersion
> > + &PackageVersionName //
> > PackageVersionName
> > + );
> > + if (PackageVersionName != NULL) {
> > + FreePool (PackageVersionName);
> > + }
> > + if (EFI_ERROR (Status)) {
> > + DEBUG ((DEBUG_ERROR, "EsrtFmpDxe: Failure in
> > GetImageInfo. Status = %r\n", Status));
> > + FreePool (FmpImageInfoBuf);
> > + return NULL;
> > + }
> > +
> > + return FmpImageInfoBuf;
> > }
> >
> > /**
> > @@ -344,31 +380,26 @@ CreateFmpBasedEsrt (
> > VOID
> > )
> > {
> > - EFI_STATUS Status;
> > - EFI_SYSTEM_RESOURCE_TABLE *Table;
> > - UINT64
> > *HardwareInstances;
> > - UINTN NoProtocols;
> > - VOID **Buffer;
> > - UINTN Index;
> > - EFI_FIRMWARE_MANAGEMENT_PROTOCOL *Fmp;
> > - UINTN DescriptorSize;
> > - EFI_FIRMWARE_IMAGE_DESCRIPTOR
> *FmpImageInfoBuf;
> > - EFI_FIRMWARE_IMAGE_DESCRIPTOR
> > *FmpImageInfoBufOrg;
> > - UINT8
> FmpImageInfoCount;
> > - UINT32
> > FmpImageInfoDescriptorVer;
> > - UINTN ImageInfoSize;
> > - UINT32 PackageVersion;
> > - CHAR16
> > *PackageVersionName;
> > + EFI_STATUS Status;
> > + UINTN NoProtocols;
> > + VOID **Buffer;
> > + UINTN Index;
> > + UINT32
> > FmpImageInfoDescriptorVer;
> > + UINT8 FmpImageInfoCount;
> > + UINTN DescriptorSize;
> > + UINT32
> NumberOfDescriptors;
> > + EFI_FIRMWARE_IMAGE_DESCRIPTOR *FmpImageInfoBuf;
> > + EFI_FIRMWARE_IMAGE_DESCRIPTOR
> *OrgFmpImageInfoBuf;
> > + EFI_SYSTEM_RESOURCE_TABLE *Table;
> > + GUID_HARDWAREINSTANCE_PAIR *HardwareInstances;
> >
> > Status = EFI_SUCCESS;
> > - Table = NULL;
> > - HardwareInstances = NULL;
> > NoProtocols = 0;
> > Buffer = NULL;
> > - PackageVersionName = NULL;
> > FmpImageInfoBuf = NULL;
> > - FmpImageInfoBufOrg = NULL;
> > - Fmp = NULL;
> > + OrgFmpImageInfoBuf = NULL;
> > + Table = NULL;
> > + HardwareInstances = NULL;
> >
> > Status = EfiLocateProtocolBuffer (
> > &gEfiFirmwareManagementProtocolGuid,
> > @@ -380,77 +411,64 @@ CreateFmpBasedEsrt (
> > }
> >
> > //
> > - // Allocate Memory for tables
> > + // Count the total number of
> > EFI_FIRMWARE_IMAGE_DESCRIPTORs
> > + //
> > + for (Index = 0, NumberOfDescriptors = 0; Index <
> > NoProtocols; Index++) {
> > + FmpImageInfoBuf = FmpGetFirmwareImageDescriptor
> (
> > +
> > (EFI_FIRMWARE_MANAGEMENT_PROTOCOL *) Buffer[Index],
> > + &FmpImageInfoDescriptorVer,
> > + &FmpImageInfoCount,
> > + &DescriptorSize
> > + );
> > + if (FmpImageInfoBuf != NULL) {
> > + NumberOfDescriptors += FmpImageInfoCount;
> > + FreePool (FmpImageInfoBuf);
> > + }
> > + }
> > +
> > + //
> > + // Allocate ESRT Table and GUID/HardwareInstance
> > table
> > //
> > Table = AllocateZeroPool (
> > - (GROWTH_STEP * sizeof
> > (EFI_SYSTEM_RESOURCE_ENTRY)) + sizeof
> > (EFI_SYSTEM_RESOURCE_TABLE)
> > + (NumberOfDescriptors * sizeof
> > (EFI_SYSTEM_RESOURCE_ENTRY)) + sizeof
> > (EFI_SYSTEM_RESOURCE_TABLE)
> > );
> > if (Table == NULL) {
> > DEBUG ((DEBUG_ERROR, "EsrtFmpDxe: Failed to
> > allocate memory for ESRT.\n"));
> > - gBS->FreePool (Buffer);
> > + FreePool (Buffer);
> > return NULL;
> > }
> >
> > - HardwareInstances = AllocateZeroPool (GROWTH_STEP
> *
> > sizeof (UINT64));
> > + HardwareInstances = AllocateZeroPool
> > (NumberOfDescriptors * sizeof
> > (GUID_HARDWAREINSTANCE_PAIR));
> > if (HardwareInstances == NULL) {
> > DEBUG ((DEBUG_ERROR, "EsrtFmpDxe: Failed to
> > allocate memory for HW Instance Table.\n"));
> > - gBS->FreePool (Table);
> > - gBS->FreePool (Buffer);
> > + FreePool (Table);
> > + FreePool (Buffer);
> > return NULL;
> > }
> >
> > + //
> > + // Initialize ESRT Table
> > + //
> > Table->FwResourceCount = 0;
> > - Table->FwResourceCountMax = GROWTH_STEP;
> > + Table->FwResourceCountMax = NumberOfDescriptors;
> > Table->FwResourceVersion =
> > EFI_SYSTEM_RESOURCE_TABLE_FIRMWARE_RESOURCE_VERSION;
> >
> > + NumberOfDescriptors = 0;
> > for (Index = 0; Index < NoProtocols; Index++) {
> > - Fmp = (EFI_FIRMWARE_MANAGEMENT_PROTOCOL *)
> > Buffer[Index];
> > -
> > - ImageInfoSize = 0;
> > - Status = Fmp->GetImageInfo (
> > - Fmp, //
> > FMP Pointer
> > - &ImageInfoSize, //
> > Buffer Size (in this case 0)
> > - NULL, //
> > NULL so we can get size
> > - &FmpImageInfoDescriptorVer, //
> > DescriptorVersion
> > - &FmpImageInfoCount, //
> > DescriptorCount
> > - &DescriptorSize, //
> > DescriptorSize
> > - &PackageVersion, //
> > PackageVersion
> > - &PackageVersionName //
> > PackageVersionName
> > - );
> > -
> > - if (Status != EFI_BUFFER_TOO_SMALL) {
> > - DEBUG ((DEBUG_ERROR, "EsrtFmpDxe: Unexpected
> > Failure in GetImageInfo. Status = %r\n", Status));
> > - continue;
> > - }
> > -
> > - FmpImageInfoBuf = AllocateZeroPool
> > (ImageInfoSize);
> > + FmpImageInfoBuf = FmpGetFirmwareImageDescriptor
> (
> > +
> > (EFI_FIRMWARE_MANAGEMENT_PROTOCOL *) Buffer[Index],
> > + &FmpImageInfoDescriptorVer,
> > + &FmpImageInfoCount,
> > + &DescriptorSize
> > + );
> > if (FmpImageInfoBuf == NULL) {
> > - DEBUG ((DEBUG_ERROR, "EsrtFmpDxe: Failed to
> get
> > memory for descriptors.\n"));
> > - continue;
> > - }
> > -
> > - FmpImageInfoBufOrg = FmpImageInfoBuf;
> > - PackageVersionName = NULL;
> > - Status = Fmp->GetImageInfo (
> > - Fmp,
> > - &ImageInfoSize, //
> > ImageInfoSize
> > - FmpImageInfoBuf, //
> > ImageInfo
> > - &FmpImageInfoDescriptorVer, //
> > DescriptorVersion
> > - &FmpImageInfoCount, //
> > DescriptorCount
> > - &DescriptorSize, //
> > DescriptorSize
> > - &PackageVersion, //
> > PackageVersion
> > - &PackageVersionName //
> > PackageVersionName
> > - );
> > - if (EFI_ERROR (Status)) {
> > - DEBUG ((DEBUG_ERROR, "EsrtFmpDxe: Failure in
> > GetImageInfo. Status = %r\n", Status));
> > - FreePool (FmpImageInfoBufOrg);
> > - FmpImageInfoBufOrg = NULL;
> > continue;
> > }
> >
> > //
> > // Check each descriptor and read from the one
> > specified
> > //
> > + OrgFmpImageInfoBuf = FmpImageInfoBuf;
> > while (FmpImageInfoCount > 0) {
> > //
> > // If the descriptor has the IN USE bit set,
> > create ESRT entry otherwise ignore.
> > @@ -459,7 +477,7 @@ CreateFmpBasedEsrt (
> > //
> > // Create ESRT entry
> > //
> > - CreateEsrtEntry (&Table, &HardwareInstances,
> > FmpImageInfoBuf, FmpImageInfoDescriptorVer);
> > + CreateEsrtEntry (Table, HardwareInstances,
> > &NumberOfDescriptors, FmpImageInfoBuf,
> > FmpImageInfoDescriptorVer);
> > }
> > FmpImageInfoCount--;
> > //
> > @@ -468,15 +486,12 @@ CreateFmpBasedEsrt (
> > FmpImageInfoBuf =
> (EFI_FIRMWARE_IMAGE_DESCRIPTOR
> > *)(((UINT8 *)FmpImageInfoBuf) + DescriptorSize);
> > }
> >
> > - if (PackageVersionName != NULL) {
> > - FreePool (PackageVersionName);
> > - PackageVersionName = NULL;
> > - }
> > - FreePool (FmpImageInfoBufOrg);
> > - FmpImageInfoBufOrg = NULL;
> > + FreePool (OrgFmpImageInfoBuf);
> > + OrgFmpImageInfoBuf = NULL;
> > }
> >
> > - gBS->FreePool (Buffer);
> > + FreePool (Buffer);
> > + FreePool (HardwareInstances);
> > return Table;
> > }
> >
> > --
> > 2.20.1.windows.1
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