VOID
CreateHobList (
IN VOID *MemoryBegin,
IN UINTN MemoryLength,
IN VOID *HobBase,
IN VOID *StackBase
)
{
EFI_HOB_HANDOFF_INFO_TABLE *Hob;
EFI_RESOURCE_ATTRIBUTE_TYPE Attributes;
Hob = HobConstructor (MemoryBegin,MemoryLength,HobBase,StackBase);
SetHobList (Hob);
BuildCpuHob (PcdGet8 (PcdPrePiCpuMemorySize), PcdGet8 (PcdPrePiCpuIoSize));
Attributes =(
EFI_RESOURCE_ATTRIBUTE_PRESENT |
EFI_RESOURCE_ATTRIBUTE_INITIALIZED |
EFI_RESOURCE_ATTRIBUTE_TESTED |
EFI_RESOURCE_ATTRIBUTE_UNCACHEABLE |
EFI_RESOURCE_ATTRIBUTE_WRITE_COMBINEABLE |
EFI_RESOURCE_ATTRIBUTE_WRITE_THROUGH_CACHEABLE |
EFI_RESOURCE_ATTRIBUTE_WRITE_BACK_CACHEABLE
);
BuildResourceDescriptorHob (EFI_RESOURCE_SYSTEM_MEMORY, Attributes, (UINTN)MemoryBegin, MemoryLength);
BuildStackHob ((EFI_PHYSICAL_ADDRESS)(UINTN)StackBase, ((UINTN)MemoryBegin + MemoryLength) - (UINTN)StackBase);
if (FeaturePcdGet (PcdPrePiProduceMemoryTypeInformationHob)) {
// Optional feature that helps prevent EFI memory map fragmentation.
BuildMemoryTypeInformationHob ();
}
}
EFI_STATUS
EFIAPI
MemoryPeim (
IN EFI_PHYSICAL_ADDRESS MemoryBase,
IN UINT64 MemorySize
)
{
EFI_RESOURCE_ATTRIBUTE_TYPE ResourceAttributes;
UINT64 Base,Size;
//
// For now we simply declare the IMA memory given to us, we will
// do things a bit more smartly when I understand UEFI memory
// management a bit better.
//
// Now, the permanent memory has been installed, we can call AllocatePages()
//
ResourceAttributes = (
EFI_RESOURCE_ATTRIBUTE_PRESENT |
EFI_RESOURCE_ATTRIBUTE_INITIALIZED |
EFI_RESOURCE_ATTRIBUTE_UNCACHEABLE |
EFI_RESOURCE_ATTRIBUTE_WRITE_COMBINEABLE |
EFI_RESOURCE_ATTRIBUTE_WRITE_THROUGH_CACHEABLE |
EFI_RESOURCE_ATTRIBUTE_WRITE_BACK_CACHEABLE |
EFI_RESOURCE_ATTRIBUTE_TESTED
);
// TODO, use device-tree
DEBUG((DEBUG_INIT, "System Memory Hob: %lx, %lx\n", MemoryBase, MemorySize));
BuildResourceDescriptorHob (
EFI_RESOURCE_SYSTEM_MEMORY,
ResourceAttributes,
MemoryBase, MemorySize);
// Reserve ourselves (TODO: reserve map in DT ?)
Base = PcdGet64(PcdFdBaseAddress) & ~(EFI_PAGE_SIZE - 1);
Size = ((PcdGet64(PcdFdBaseAddress) + PcdGet64(PcdFdSize)) + (EFI_PAGE_SIZE - 1)) & ~(EFI_PAGE_SIZE - 1);
DEBUG((DEBUG_INIT, "Reserve Hob: %lx, %lx\n", Base, Size));
BuildMemoryAllocationHob (Base, Size, EfiBootServicesData);
// Initialize MMU
InitMmu ();
if (FeaturePcdGet (PcdPrePiProduceMemoryTypeInformationHob)) {
// Optional feature that helps prevent EFI memory map fragmentation.
BuildMemoryTypeInformationHob ();
}
return EFI_SUCCESS;
}
EFI_STATUS
EFIAPI
MemoryPeim (
IN EFI_PHYSICAL_ADDRESS UefiMemoryBase,
IN UINT64 UefiMemorySize
)
{
EFI_RESOURCE_ATTRIBUTE_TYPE ResourceAttributes;
UINT64 SystemMemoryTop;
// Ensure PcdSystemMemorySize has been set
ASSERT (PcdGet64 (PcdSystemMemorySize) != 0);
//
// Now, the permanent memory has been installed, we can call AllocatePages()
//
ResourceAttributes = (
EFI_RESOURCE_ATTRIBUTE_PRESENT |
EFI_RESOURCE_ATTRIBUTE_INITIALIZED |
EFI_RESOURCE_ATTRIBUTE_UNCACHEABLE |
EFI_RESOURCE_ATTRIBUTE_WRITE_COMBINEABLE |
EFI_RESOURCE_ATTRIBUTE_WRITE_THROUGH_CACHEABLE |
EFI_RESOURCE_ATTRIBUTE_WRITE_BACK_CACHEABLE |
EFI_RESOURCE_ATTRIBUTE_TESTED
);
SystemMemoryTop = PcdGet64 (PcdSystemMemoryBase) +
PcdGet64 (PcdSystemMemorySize);
if (SystemMemoryTop - 1 > MAX_ADDRESS) {
BuildResourceDescriptorHob (
EFI_RESOURCE_SYSTEM_MEMORY,
ResourceAttributes,
PcdGet64 (PcdSystemMemoryBase),
(UINT64)MAX_ADDRESS - PcdGet64 (PcdSystemMemoryBase) + 1
);
BuildResourceDescriptorHob (
EFI_RESOURCE_SYSTEM_MEMORY,
ResourceAttributes,
(UINT64)MAX_ADDRESS + 1,
SystemMemoryTop - MAX_ADDRESS - 1
);
} else {
BuildResourceDescriptorHob (
EFI_RESOURCE_SYSTEM_MEMORY,
ResourceAttributes,
PcdGet64 (PcdSystemMemoryBase),
PcdGet64 (PcdSystemMemorySize)
);
}
//
// When running under virtualization, the PI/UEFI memory region may be
// clean but not invalidated in system caches or in lower level caches
// on other CPUs. So invalidate the region by virtual address, to ensure
// that the contents we put there with the caches and MMU off will still
// be visible after turning them on.
//
InvalidateDataCacheRange ((VOID*)(UINTN)UefiMemoryBase, UefiMemorySize);
// Build Memory Allocation Hob
InitMmu ();
if (FeaturePcdGet (PcdPrePiProduceMemoryTypeInformationHob)) {
// Optional feature that helps prevent EFI memory map fragmentation.
BuildMemoryTypeInformationHob ();
}
return EFI_SUCCESS;
}
/*++
Routine Description:
Arguments:
FileHandle - Handle of the file being invoked.
PeiServices - Describes the list of possible PEI Services.
Returns:
Status - EFI_SUCCESS if the boot mode could be set
--*/
EFI_STATUS
EFIAPI
MemoryPeim (
IN EFI_PHYSICAL_ADDRESS UefiMemoryBase,
IN UINT64 UefiMemorySize
)
{
EFI_RESOURCE_ATTRIBUTE_TYPE ResourceAttributes;
UINT64 ResourceLength;
EFI_PEI_HOB_POINTERS NextHob;
EFI_PHYSICAL_ADDRESS FdTop;
EFI_PHYSICAL_ADDRESS SystemMemoryTop;
EFI_PHYSICAL_ADDRESS ResourceTop;
BOOLEAN Found;
// Ensure PcdSystemMemorySize has been set
ASSERT (PcdGet32 (PcdSystemMemorySize) != 0);
//
// Now, the permanent memory has been installed, we can call AllocatePages()
//
ResourceAttributes = (
EFI_RESOURCE_ATTRIBUTE_PRESENT |
EFI_RESOURCE_ATTRIBUTE_INITIALIZED |
EFI_RESOURCE_ATTRIBUTE_UNCACHEABLE |
EFI_RESOURCE_ATTRIBUTE_WRITE_COMBINEABLE |
EFI_RESOURCE_ATTRIBUTE_WRITE_THROUGH_CACHEABLE |
EFI_RESOURCE_ATTRIBUTE_WRITE_BACK_CACHEABLE |
EFI_RESOURCE_ATTRIBUTE_TESTED
);
// Reserved the memory space occupied by the firmware volume
BuildResourceDescriptorHob (
EFI_RESOURCE_SYSTEM_MEMORY,
ResourceAttributes,
PcdGet32 (PcdSystemMemoryBase),
PcdGet32 (PcdSystemMemorySize)
);
SystemMemoryTop = PcdGet32 (PcdSystemMemoryBase) + PcdGet32 (PcdSystemMemorySize);
FdTop = PcdGet32(PcdFdBaseAddress) + PcdGet32(PcdFdSize);
// EDK2 does not have the concept of boot firmware copied into DRAM. To avoid the DXE
// core to overwrite this area we must mark the region with the attribute non-present
if ((PcdGet32 (PcdFdBaseAddress) >= PcdGet32 (PcdSystemMemoryBase)) && (FdTop <= SystemMemoryTop)) {
Found = FALSE;
// Search for System Memory Hob that contains the firmware
NextHob.Raw = GetHobList ();
while ((NextHob.Raw = GetNextHob (EFI_HOB_TYPE_RESOURCE_DESCRIPTOR, NextHob.Raw)) != NULL) {
if ((NextHob.ResourceDescriptor->ResourceType == EFI_RESOURCE_SYSTEM_MEMORY) &&
(PcdGet32(PcdFdBaseAddress) >= NextHob.ResourceDescriptor->PhysicalStart) &&
(FdTop <= NextHob.ResourceDescriptor->PhysicalStart + NextHob.ResourceDescriptor->ResourceLength))
{
ResourceAttributes = NextHob.ResourceDescriptor->ResourceAttribute;
ResourceLength = NextHob.ResourceDescriptor->ResourceLength;
ResourceTop = NextHob.ResourceDescriptor->PhysicalStart + ResourceLength;
if (PcdGet32(PcdFdBaseAddress) == NextHob.ResourceDescriptor->PhysicalStart) {
if (SystemMemoryTop == FdTop) {
NextHob.ResourceDescriptor->ResourceAttribute = ResourceAttributes & ~EFI_RESOURCE_ATTRIBUTE_PRESENT;
} else {
// Create the System Memory HOB for the firmware with the non-present attribute
BuildResourceDescriptorHob (EFI_RESOURCE_SYSTEM_MEMORY,
ResourceAttributes & ~EFI_RESOURCE_ATTRIBUTE_PRESENT,
PcdGet32(PcdFdBaseAddress),
PcdGet32(PcdFdSize));
// Top of the FD is system memory available for UEFI
NextHob.ResourceDescriptor->PhysicalStart += PcdGet32(PcdFdSize);
NextHob.ResourceDescriptor->ResourceLength -= PcdGet32(PcdFdSize);
}
} else {
// Create the System Memory HOB for the firmware with the non-present attribute
BuildResourceDescriptorHob (EFI_RESOURCE_SYSTEM_MEMORY,
ResourceAttributes & ~EFI_RESOURCE_ATTRIBUTE_PRESENT,
PcdGet32(PcdFdBaseAddress),
PcdGet32(PcdFdSize));
// Update the HOB
NextHob.ResourceDescriptor->ResourceLength = PcdGet32(PcdFdBaseAddress) - NextHob.ResourceDescriptor->PhysicalStart;
// If there is some memory available on the top of the FD then create a HOB
if (FdTop < NextHob.ResourceDescriptor->PhysicalStart + ResourceLength) {
// Create the System Memory HOB for the remaining region (top of the FD)
BuildResourceDescriptorHob (EFI_RESOURCE_SYSTEM_MEMORY,
ResourceAttributes,
FdTop,
ResourceTop - FdTop);
}
}
Found = TRUE;
break;
}
NextHob.Raw = GET_NEXT_HOB (NextHob);
}
ASSERT(Found);
}
// Build Memory Allocation Hob
InitMmu ();
if (FeaturePcdGet (PcdPrePiProduceMemoryTypeInformationHob)) {
// Optional feature that helps prevent EFI memory map fragmentation.
BuildMemoryTypeInformationHob ();
}
return EFI_SUCCESS;
}
