/** @file
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*
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* Copyright (c) 2018, Linaro Limited. All rights reserved.
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*
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* SPDX-License-Identifier: BSD-2-Clause-Patent
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*
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**/
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#include <Library/ArmPlatformLib.h>
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#include <Library/DebugLib.h>
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#include <Library/HobLib.h>
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#include <Library/PcdLib.h>
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#include <Library/IoLib.h>
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#include <Library/MemoryAllocationLib.h>
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// The total number of descriptors, including the final "end-of-table" descriptor.
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#define MAX_VIRTUAL_MEMORY_MAP_DESCRIPTORS 12
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// DDR attributes
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#define DDR_ATTRIBUTES_CACHED ARM_MEMORY_REGION_ATTRIBUTE_WRITE_BACK
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#define DDR_ATTRIBUTES_UNCACHED ARM_MEMORY_REGION_ATTRIBUTE_UNCACHED_UNBUFFERED
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#define HI3660_PERIPH_BASE 0xE0000000
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#define HI3660_PERIPH_SZ 0x20000000
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#define HIKEY960_EXTRA_SYSTEM_MEMORY_BASE 0x0000000100000000
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#define HIKEY960_EXTRA_SYSTEM_MEMORY_SIZE 0x0000000020000000
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#define HIKEY960_MEMORY_SIZE 0x0000000100000000
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STATIC struct HiKey960ReservedMemory {
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EFI_PHYSICAL_ADDRESS Offset;
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EFI_PHYSICAL_ADDRESS Size;
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} HiKey960ReservedMemoryBuffer [] = {
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{ 0x1AC00000, 0x00098000 }, // ARM-TF reserved
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{ 0x32000000, 0x00100000 }, // PSTORE/RAMOOPS
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{ 0x32100000, 0x00001000 }, // ADB REBOOT "REASON"
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{ 0x3E000000, 0x02000000 }, // TEE OS
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{ 0x89B80000, 0x00100000 }, // MCU Code reserved
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{ 0x89C80000, 0x00040000 } // MCU reserved
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};
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/**
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Return the Virtual Memory Map of your platform
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This Virtual Memory Map is used by MemoryInitPei Module to initialize the MMU on your platform.
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@param[out] VirtualMemoryMap Array of ARM_MEMORY_REGION_DESCRIPTOR describing a Physical-to-
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Virtual Memory mapping. This array must be ended by a zero-filled
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entry
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**/
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VOID
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ArmPlatformGetVirtualMemoryMap (
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IN ARM_MEMORY_REGION_DESCRIPTOR** VirtualMemoryMap
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)
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{
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ARM_MEMORY_REGION_ATTRIBUTES CacheAttributes;
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ARM_MEMORY_REGION_DESCRIPTOR *VirtualMemoryTable;
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EFI_RESOURCE_ATTRIBUTE_TYPE ResourceAttributes;
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UINTN Index = 0, Count, ReservedTop;
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EFI_PEI_HOB_POINTERS NextHob;
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UINT64 ResourceLength;
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EFI_PHYSICAL_ADDRESS ResourceTop;
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ResourceAttributes = (
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EFI_RESOURCE_ATTRIBUTE_PRESENT |
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EFI_RESOURCE_ATTRIBUTE_INITIALIZED |
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EFI_RESOURCE_ATTRIBUTE_WRITE_COMBINEABLE |
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EFI_RESOURCE_ATTRIBUTE_WRITE_THROUGH_CACHEABLE |
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EFI_RESOURCE_ATTRIBUTE_WRITE_BACK_CACHEABLE |
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EFI_RESOURCE_ATTRIBUTE_TESTED
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);
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// Create initial Base Hob for system memory.
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BuildResourceDescriptorHob (
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EFI_RESOURCE_SYSTEM_MEMORY,
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ResourceAttributes,
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PcdGet64 (PcdSystemMemoryBase),
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PcdGet64 (PcdSystemMemorySize)
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);
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NextHob.Raw = GetHobList ();
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Count = sizeof (HiKey960ReservedMemoryBuffer) / sizeof (struct HiKey960ReservedMemory);
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while ((NextHob.Raw = GetNextHob (EFI_HOB_TYPE_RESOURCE_DESCRIPTOR, NextHob.Raw)) != NULL)
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{
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if (Index >= Count)
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break;
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if ((NextHob.ResourceDescriptor->ResourceType == EFI_RESOURCE_SYSTEM_MEMORY) &&
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(HiKey960ReservedMemoryBuffer[Index].Offset >= NextHob.ResourceDescriptor->PhysicalStart) &&
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((HiKey960ReservedMemoryBuffer[Index].Offset + HiKey960ReservedMemoryBuffer[Index].Size) <=
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NextHob.ResourceDescriptor->PhysicalStart + NextHob.ResourceDescriptor->ResourceLength))
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{
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ResourceAttributes = NextHob.ResourceDescriptor->ResourceAttribute;
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ResourceLength = NextHob.ResourceDescriptor->ResourceLength;
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ResourceTop = NextHob.ResourceDescriptor->PhysicalStart + ResourceLength;
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ReservedTop = HiKey960ReservedMemoryBuffer[Index].Offset + HiKey960ReservedMemoryBuffer[Index].Size;
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// Create the System Memory HOB for the reserved buffer
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BuildResourceDescriptorHob (
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EFI_RESOURCE_MEMORY_RESERVED,
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EFI_RESOURCE_ATTRIBUTE_PRESENT,
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HiKey960ReservedMemoryBuffer[Index].Offset,
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HiKey960ReservedMemoryBuffer[Index].Size
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);
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// Update the HOB
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NextHob.ResourceDescriptor->ResourceLength = HiKey960ReservedMemoryBuffer[Index].Offset -
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NextHob.ResourceDescriptor->PhysicalStart;
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// If there is some memory available on the top of the reserved memory then create a HOB
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if (ReservedTop < ResourceTop)
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{
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BuildResourceDescriptorHob (EFI_RESOURCE_SYSTEM_MEMORY,
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ResourceAttributes,
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ReservedTop,
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ResourceTop - ReservedTop);
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}
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Index++;
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}
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NextHob.Raw = GET_NEXT_HOB (NextHob);
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}
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ASSERT (VirtualMemoryMap != NULL);
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VirtualMemoryTable = (ARM_MEMORY_REGION_DESCRIPTOR*)AllocatePages (
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EFI_SIZE_TO_PAGES (sizeof(ARM_MEMORY_REGION_DESCRIPTOR) * MAX_VIRTUAL_MEMORY_MAP_DESCRIPTORS)
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);
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if (VirtualMemoryTable == NULL) {
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return;
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}
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CacheAttributes = DDR_ATTRIBUTES_CACHED;
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Index = 0;
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// DDR - 3.0GB section
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VirtualMemoryTable[Index].PhysicalBase = PcdGet64 (PcdSystemMemoryBase);
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VirtualMemoryTable[Index].VirtualBase = PcdGet64 (PcdSystemMemoryBase);
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VirtualMemoryTable[Index].Length = PcdGet64 (PcdSystemMemorySize);
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VirtualMemoryTable[Index].Attributes = CacheAttributes;
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// Hi3660 SOC peripherals
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VirtualMemoryTable[++Index].PhysicalBase = HI3660_PERIPH_BASE;
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VirtualMemoryTable[Index].VirtualBase = HI3660_PERIPH_BASE;
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VirtualMemoryTable[Index].Length = HI3660_PERIPH_SZ;
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VirtualMemoryTable[Index].Attributes = ARM_MEMORY_REGION_ATTRIBUTE_DEVICE;
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// End of Table
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VirtualMemoryTable[++Index].PhysicalBase = 0;
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VirtualMemoryTable[Index].VirtualBase = 0;
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VirtualMemoryTable[Index].Length = 0;
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VirtualMemoryTable[Index].Attributes = (ARM_MEMORY_REGION_ATTRIBUTES)0;
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ASSERT((Index + 1) <= MAX_VIRTUAL_MEMORY_MAP_DESCRIPTORS);
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*VirtualMemoryMap = VirtualMemoryTable;
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}
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