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StandaloneMmPkg/Core: Migrate Memory Allocation Hob into MMRAM

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If a Memory Allocation Hob with EfiBootServicesData memory type is
reported into MM Hob List and it also has a non-zero GUID name, then the
HOB is used by MM driver and needs to migrate the memory into MMRAM.

Cc: Ard Biesheuvel <ardb+tianocore@kernel.org>
Cc: Sami Mujawar <sami.mujawar@arm.com>
Cc: Ray Ni <ray.ni@intel.com>
Cc: Jiaxin Wu <jiaxin.wu@intel.com>
Signed-off-by: Wei6 Xu <wei6.xu@intel.com>
This commit is contained in:
Wei6 Xu 2024-06-21 15:04:57 +08:00 committed by mergify[bot]
parent 6b69f564a9
commit cfaccc89a2
1 changed files with 61 additions and 0 deletions
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61
StandaloneMmPkg/Core/StandaloneMmCore.c
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@ -643,6 +643,66 @@ MmConfigurationMmNotify (
return EFI_SUCCESS; return EFI_SUCCESS;
} }
/**
Migrate MemoryBaseAddress in memory allocation HOBs with BootServiceData
type and non-zero GUID name from Boot Service memory to MMRAM.
@param[in] HobStart Pointer to the start of the HOB list.
**/
VOID
MigrateMemoryAllocationHobs (
IN VOID *HobStart
)
{
EFI_PEI_HOB_POINTERS Hob;
EFI_HOB_MEMORY_ALLOCATION *MemoryAllocationHob;
VOID *MemoryInMmram;
MemoryAllocationHob = NULL;
Hob.Raw = GetNextHob (EFI_HOB_TYPE_MEMORY_ALLOCATION, HobStart);
while (Hob.Raw != NULL) {
MemoryAllocationHob = (EFI_HOB_MEMORY_ALLOCATION *)Hob.Raw;
if ((MemoryAllocationHob->AllocDescriptor.MemoryType == EfiBootServicesData) &&
(MmIsBufferOutsideMmValid (
MemoryAllocationHob->AllocDescriptor.MemoryBaseAddress,
MemoryAllocationHob->AllocDescriptor.MemoryLength
))
)
{
if (!IsZeroGuid (&MemoryAllocationHob->AllocDescriptor.Name)) {
MemoryInMmram = AllocatePages (EFI_SIZE_TO_PAGES (MemoryAllocationHob->AllocDescriptor.MemoryLength));
if (MemoryInMmram != NULL) {
DEBUG ((
DEBUG_INFO,
"Migrate Memory Allocation Hob (%g) from %08x to %08p\n",
&MemoryAllocationHob->AllocDescriptor.Name,
MemoryAllocationHob->AllocDescriptor.MemoryBaseAddress,
MemoryInMmram
));
CopyMem (
MemoryInMmram,
(VOID *)(UINTN)MemoryAllocationHob->AllocDescriptor.MemoryBaseAddress,
MemoryAllocationHob->AllocDescriptor.MemoryLength
);
MemoryAllocationHob->AllocDescriptor.MemoryBaseAddress = (EFI_PHYSICAL_ADDRESS)(UINTN)MemoryInMmram;
MemoryAllocationHob->AllocDescriptor.MemoryType = EfiRuntimeServicesData;
}
} else {
DEBUG ((
DEBUG_ERROR,
"Error - Memory Allocation Hob [%08x, %08x] doesn't have a GUID name specified\n",
MemoryAllocationHob->AllocDescriptor.MemoryBaseAddress,
MemoryAllocationHob->AllocDescriptor.MemoryLength
));
}
}
Hob.Raw = GET_NEXT_HOB (Hob);
Hob.Raw = GetNextHob (EFI_HOB_TYPE_MEMORY_ALLOCATION, Hob.Raw);
}
}
/** Returns the HOB list size. /** Returns the HOB list size.
@param [in] HobStart Pointer to the start of the HOB list. @param [in] HobStart Pointer to the start of the HOB list.
@ -757,6 +817,7 @@ StandaloneMmMain (
CopyMem (MmHobStart, HobStart, HobSize); CopyMem (MmHobStart, HobStart, HobSize);
Status = MmInstallConfigurationTable (&gMmCoreMmst, &gEfiHobListGuid, MmHobStart, HobSize); Status = MmInstallConfigurationTable (&gMmCoreMmst, &gEfiHobListGuid, MmHobStart, HobSize);
ASSERT_EFI_ERROR (Status); ASSERT_EFI_ERROR (Status);
MigrateMemoryAllocationHobs (MmHobStart);
gHobList = MmHobStart; gHobList = MmHobStart;
// //