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/*******************************************************************************
Copyright (C) 2016 Marvell International Ltd.
SPDX-License-Identifier: BSD-2-Clause-Patent
*******************************************************************************/
#include <Uefi.h>
#include <IndustryStandard/ArmStdSmc.h>
#include <IndustryStandard/MvSmc.h>
#include <Library/ArmadaSoCDescLib.h>
#include <Library/ArmPlatformLib.h>
#include <Library/ArmSmcLib.h>
#include <Library/DebugLib.h>
#include <Library/HobLib.h>
#include <Library/IoLib.h>
#include <Library/MemoryAllocationLib.h>
#include "Armada7k8kLibMem.h"
// The total number of descriptors, including the final "end-of-table" descriptor.
#define MAX_VIRTUAL_MEMORY_MAP_DESCRIPTORS 16
// DDR attributes
#define DDR_ATTRIBUTES_CACHED ARM_MEMORY_REGION_ATTRIBUTE_NONSECURE_WRITE_BACK
#define DDR_ATTRIBUTES_UNCACHED ARM_MEMORY_REGION_ATTRIBUTE_UNCACHED_UNBUFFERED
STATIC ARM_MEMORY_REGION_DESCRIPTOR mVirtualMemoryTable[MAX_VIRTUAL_MEMORY_MAP_DESCRIPTORS];
// Obtain DRAM size basing on register values filled by early firmware.
STATIC
UINT64
GetDramSize (
IN OUT UINT64 *MemSize
)
{
#if defined(MDE_CPU_AARCH64)
ARM_SMC_ARGS SmcRegs = {0};
EFI_STATUS Status;
SmcRegs.Arg0 = MV_SMC_ID_DRAM_SIZE;
Status = ArmadaSoCAp8xxBaseGet (&SmcRegs.Arg1, 0);
if (EFI_ERROR (Status)) {
return Status;
}
ArmCallSmc (&SmcRegs);
*MemSize = SmcRegs.Arg0;
#else
//
// Use fixed value, as currently there is no support
// in Armada early firmware for 32-bit SMC
//
*MemSize = FixedPcdGet64 (PcdSystemMemorySize);
#endif
return EFI_SUCCESS;
}
/**
Return the Virtual Memory Map of your platform
This Virtual Memory Map is used by MemoryInitPei Module to initialize the MMU on your platform.
@param[out] VirtualMemoryMap Array of ARM_MEMORY_REGION_DESCRIPTOR describing a Physical-to-
Virtual Memory mapping. This array must be ended by a zero-filled
entry
**/
VOID
ArmPlatformGetVirtualMemoryMap (
IN ARM_MEMORY_REGION_DESCRIPTOR** VirtualMemoryMap
)
{
UINTN Index = 0;
UINT64 MemSize;
UINT64 MemLowSize;
UINT64 MemHighStart;
UINT64 MemHighSize;
UINT64 ConfigSpaceBaseAddr;
EFI_RESOURCE_ATTRIBUTE_TYPE ResourceAttributes;
EFI_STATUS Status;
ASSERT (VirtualMemoryMap != NULL);
ConfigSpaceBaseAddr = FixedPcdGet64 (PcdConfigSpaceBaseAddress);
// Obtain total memory size from the hardware.
Status = GetDramSize (&MemSize);
if (EFI_ERROR (Status)) {
MemSize = FixedPcdGet64 (PcdSystemMemorySize);
DEBUG ((DEBUG_ERROR, "Limit total memory size to %d MB\n", MemSize / 1024 / 1024));
}
if (DRAM_REMAP_ENABLED) {
MemLowSize = MIN (DRAM_REMAP_TARGET, MemSize);
MemHighStart = (UINT64)DRAM_REMAP_TARGET + DRAM_REMAP_SIZE;
MemHighSize = MemSize - MemLowSize;
} else {
MemLowSize = MIN (ConfigSpaceBaseAddr, MemSize);
}
ResourceAttributes = (
EFI_RESOURCE_ATTRIBUTE_PRESENT |
EFI_RESOURCE_ATTRIBUTE_INITIALIZED |
EFI_RESOURCE_ATTRIBUTE_WRITE_COMBINEABLE |
EFI_RESOURCE_ATTRIBUTE_WRITE_THROUGH_CACHEABLE |
EFI_RESOURCE_ATTRIBUTE_WRITE_BACK_CACHEABLE |
EFI_RESOURCE_ATTRIBUTE_TESTED
);
BuildResourceDescriptorHob (
EFI_RESOURCE_SYSTEM_MEMORY,
ResourceAttributes,
FixedPcdGet64 (PcdSystemMemoryBase),
MemLowSize
);
// DDR
mVirtualMemoryTable[Index].PhysicalBase = FixedPcdGet64 (PcdSystemMemoryBase);
mVirtualMemoryTable[Index].VirtualBase = FixedPcdGet64 (PcdSystemMemoryBase);
mVirtualMemoryTable[Index].Length = MemLowSize;
mVirtualMemoryTable[Index].Attributes = DDR_ATTRIBUTES_CACHED;
// Configuration space
mVirtualMemoryTable[++Index].PhysicalBase = ConfigSpaceBaseAddr;
mVirtualMemoryTable[Index].VirtualBase = ConfigSpaceBaseAddr;
mVirtualMemoryTable[Index].Length = SIZE_4GB - ConfigSpaceBaseAddr;
mVirtualMemoryTable[Index].Attributes = ARM_MEMORY_REGION_ATTRIBUTE_DEVICE;
if (MemSize > MemLowSize) {
//
// If we have more than MemLowSize worth of DRAM, the remainder will be
// mapped at the top of the remapped window.
//
mVirtualMemoryTable[++Index].PhysicalBase = MemHighStart;
mVirtualMemoryTable[Index].VirtualBase = MemHighStart;
mVirtualMemoryTable[Index].Length = MemHighSize;
mVirtualMemoryTable[Index].Attributes = DDR_ATTRIBUTES_CACHED;
BuildResourceDescriptorHob (
EFI_RESOURCE_SYSTEM_MEMORY,
ResourceAttributes,
MemHighStart,
MemHighSize
);
}
// End of Table
mVirtualMemoryTable[++Index].PhysicalBase = 0;
mVirtualMemoryTable[Index].VirtualBase = 0;
mVirtualMemoryTable[Index].Length = 0;
mVirtualMemoryTable[Index].Attributes = 0;
ASSERT((Index + 1) <= MAX_VIRTUAL_MEMORY_MAP_DESCRIPTORS);
*VirtualMemoryMap = mVirtualMemoryTable;
}
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