On Thu, Nov 14, 2019 at 04:07:37PM +0000, Pete Batard wrote:
> This patch improves memory initialization for the Raspberry Pi Platform by:
>
> Using VideoCore mailbox data to reserve only the regions that are actually
> mapped. Especially, besides the base RAM size, which was already set using
> VideoCore data, we can set the GPU/VideoCore base address as well as the
> extended RAM, which is the memory beyond 1 GB that is available on models
> such as the Raspberry Pi 4 (for the 2GB or 4GB versions).
>
> Introducing a new PcdExtendedMemoryBase PCD for the base address of the
> extended memory region, which currently cannot be retrieved from VideoCore
> (MBOX_GET_ARM_MEMSIZE still only returns a single region on Bcm2711).
>
> Introducing a new RpiPlatformGetVirtualMemoryInfo() companion call to
> ArmPlatformGetVirtualMemoryMap() that allows us greatly simplify the
> registration of each segment in MemoryPeim() as well as making it easier
> to maintain for future models.
>
> We also fix SoC register space that should have been marked as reserved
> but wasn't until now and remove the unreferenced mSystemMemoryEnd extern
> in MemoryInitPeiLib.c.
Minor style comments and one copyright question below.
> Signed-off-by: Pete Batard <p...@akeo.ie>
> ---
> Platform/RaspberryPi/Include/Library/RPiMem.h | 26 +++
> Platform/RaspberryPi/Library/MemoryInitPeiLib/MemoryInitPeiLib.c | 94
> ++++----
> Platform/RaspberryPi/Library/MemoryInitPeiLib/MemoryInitPeiLib.inf | 1 +
> Platform/RaspberryPi/Library/PlatformLib/PlatformLib.inf | 3 +
> Platform/RaspberryPi/Library/PlatformLib/RaspberryPiMem.c | 242
> +++++++++++---------
> Platform/RaspberryPi/RaspberryPi.dec | 1 +
> 6 files changed, 210 insertions(+), 157 deletions(-)
>
> diff --git a/Platform/RaspberryPi/Include/Library/RPiMem.h
> b/Platform/RaspberryPi/Include/Library/RPiMem.h
> new file mode 100644
> index 000000000000..0bfc697ed094
> --- /dev/null
> +++ b/Platform/RaspberryPi/Include/Library/RPiMem.h
> @@ -0,0 +1,26 @@
> +/** @file
> + *
> + * Copyright (c) 2019, Pete Batard <p...@akeo.ie>
> + *
> + * SPDX-License-Identifier: BSD-2-Clause-Patent
> + *
> + **/
> +
> +#ifndef __RPI_MEM_H__
> +#define __RPI_MEM_H__
As mentioned for earlier patch, please drop leading __.
> +
> +#define RPI_MEM_BASIC_REGION 0
> +#define RPI_MEM_RUNTIME_REGION 1
> +#define RPI_MEM_RESERVED_REGION 2
> +
> +typedef struct {
> + CONST CHAR16* Name;
> + UINTN Type;
> +} RPI_MEMORY_REGION_INFO;
> +
> +VOID
> +RpiPlatformGetVirtualMemoryInfo (
> + IN RPI_MEMORY_REGION_INFO** MemoryInfo
> + );
> +
> +#endif /* __RPI_MEM_H__ */
> diff --git a/Platform/RaspberryPi/Library/MemoryInitPeiLib/MemoryInitPeiLib.c
> b/Platform/RaspberryPi/Library/MemoryInitPeiLib/MemoryInitPeiLib.c
> index 60cf397f8baa..3a0f7e19e993 100644
> --- a/Platform/RaspberryPi/Library/MemoryInitPeiLib/MemoryInitPeiLib.c
> +++ b/Platform/RaspberryPi/Library/MemoryInitPeiLib/MemoryInitPeiLib.c
> @@ -15,8 +15,7 @@
> #include <Library/HobLib.h>
> #include <Library/MemoryAllocationLib.h>
> #include <Library/PcdLib.h>
> -
> -extern UINT64 mSystemMemoryEnd;
> +#include <Library/RPiMem.h>
>
> VOID
> BuildMemoryTypeInformationHob (
> @@ -39,23 +38,32 @@ InitMmu (
> }
> }
>
> +STATIC
> +VOID
> +AddBasicMemoryRegion (
> + IN ARM_MEMORY_REGION_DESCRIPTOR *Desc
> +)
> +{
> + BuildResourceDescriptorHob (
> + EFI_RESOURCE_SYSTEM_MEMORY,
> + 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,
> + Desc->PhysicalBase,
> + Desc->Length
> + );
> +}
> +
> STATIC
> VOID
> AddRuntimeServicesRegion (
> IN ARM_MEMORY_REGION_DESCRIPTOR *Desc
> )
> {
> - BuildResourceDescriptorHob (
> - EFI_RESOURCE_SYSTEM_MEMORY,
> - 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,
> - Desc->PhysicalBase,
> - Desc->Length
> - );
> + AddBasicMemoryRegion (Desc);
>
> BuildMemoryAllocationHob (
> Desc->PhysicalBase,
> @@ -70,17 +78,7 @@ AddReservedMemoryRegion (
> IN ARM_MEMORY_REGION_DESCRIPTOR *Desc
> )
> {
> - BuildResourceDescriptorHob (
> - EFI_RESOURCE_SYSTEM_MEMORY,
> - 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,
> - Desc->PhysicalBase,
> - Desc->Length
> - );
> + AddBasicMemoryRegion (Desc);
>
> BuildMemoryAllocationHob (
> Desc->PhysicalBase,
> @@ -89,6 +87,12 @@ AddReservedMemoryRegion (
> );
> }
>
> +void (*AddRegion[]) (IN ARM_MEMORY_REGION_DESCRIPTOR *Desc) = {
> + AddBasicMemoryRegion,
> + AddRuntimeServicesRegion,
> + AddReservedMemoryRegion,
> + };
> +
> /*++
>
> Routine Description:
> @@ -113,36 +117,28 @@ MemoryPeim (
> )
> {
> ARM_MEMORY_REGION_DESCRIPTOR *MemoryTable;
> + RPI_MEMORY_REGION_INFO *MemoryInfo;
> + UINTN Index;
>
> // Get Virtual Memory Map from the Platform Library
> ArmPlatformGetVirtualMemoryMap (&MemoryTable);
>
> - // Ensure PcdSystemMemorySize has been set
> - ASSERT (PcdGet64 (PcdSystemMemorySize) != 0);
> + // Get additional info not provided by MemoryTable
> + RpiPlatformGetVirtualMemoryInfo (&MemoryInfo);
>
> - // FD without variable store
> - AddReservedMemoryRegion (&MemoryTable[0]);
> -
> - // Variable store.
> - AddRuntimeServicesRegion (&MemoryTable[1]);
> -
> - // Trusted Firmware region
> - AddReservedMemoryRegion (&MemoryTable[2]);
> -
> - // Usable memory.
> - BuildResourceDescriptorHob (
> - EFI_RESOURCE_SYSTEM_MEMORY,
> - 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,
> - MemoryTable[3].PhysicalBase,
> - MemoryTable[3].Length
> - );
> -
> - AddReservedMemoryRegion (&MemoryTable[4]);
> + // Register each memory region
> + for (Index = 0; MemoryTable[Index].Length != 0; Index++) {
> + ASSERT (MemoryInfo[Index].Type < ARRAY_SIZE (AddRegion));
> + DEBUG ((DEBUG_INFO, "%s:\n"
> + "\tPhysicalBase: 0x%lX\n"
> + "\tVirtualBase: 0x%lX\n"
> + "\tLength: 0x%lX\n",
> + MemoryInfo[Index].Name,
> + MemoryTable[Index].PhysicalBase,
> + MemoryTable[Index].VirtualBase,
> + MemoryTable[Index].Length));
> + AddRegion[MemoryInfo[Index].Type] (&MemoryTable[Index]);
> + }
>
> // Build Memory Allocation Hob
> InitMmu (MemoryTable);
> diff --git
> a/Platform/RaspberryPi/Library/MemoryInitPeiLib/MemoryInitPeiLib.inf
> b/Platform/RaspberryPi/Library/MemoryInitPeiLib/MemoryInitPeiLib.inf
> index 0084c010936d..d39210c7a4f1 100644
> --- a/Platform/RaspberryPi/Library/MemoryInitPeiLib/MemoryInitPeiLib.inf
> +++ b/Platform/RaspberryPi/Library/MemoryInitPeiLib/MemoryInitPeiLib.inf
> @@ -24,6 +24,7 @@ [Packages]
> EmbeddedPkg/EmbeddedPkg.dec
> ArmPkg/ArmPkg.dec
> ArmPlatformPkg/ArmPlatformPkg.dec
> + Platform/RaspberryPi/RaspberryPi.dec
>
> [LibraryClasses]
> DebugLib
> diff --git a/Platform/RaspberryPi/Library/PlatformLib/PlatformLib.inf
> b/Platform/RaspberryPi/Library/PlatformLib/PlatformLib.inf
> index 85462febdd8d..c0e2a75451c3 100644
> --- a/Platform/RaspberryPi/Library/PlatformLib/PlatformLib.inf
> +++ b/Platform/RaspberryPi/Library/PlatformLib/PlatformLib.inf
> @@ -22,6 +22,7 @@ [Packages]
> EmbeddedPkg/EmbeddedPkg.dec
> ArmPkg/ArmPkg.dec
> ArmPlatformPkg/ArmPlatformPkg.dec
> + Silicon/Broadcom/Bcm27xx/Bcm27xx.dec
> Silicon/Broadcom/Bcm283x/Bcm283x.dec
> Platform/RaspberryPi/RaspberryPi.dec
>
> @@ -50,10 +51,12 @@ [FixedPcd]
> gEmbeddedTokenSpaceGuid.PcdDmaDeviceOffset
> gArmTokenSpaceGuid.PcdSystemMemoryBase
> gArmTokenSpaceGuid.PcdSystemMemorySize
> + gRaspberryPiTokenSpaceGuid.PcdExtendedMemoryBase
> gRaspberryPiTokenSpaceGuid.PcdNvStorageEventLogSize
> gEfiMdeModulePkgTokenSpaceGuid.PcdFlashNvStorageVariableSize
> gEfiMdeModulePkgTokenSpaceGuid.PcdFlashNvStorageFtwWorkingSize
> gEfiMdeModulePkgTokenSpaceGuid.PcdFlashNvStorageFtwSpareSize
> + gBcm27xxTokenSpaceGuid.PcdBcm27xxRegistersAddress
> gBcm283xTokenSpaceGuid.PcdBcm283xRegistersAddress
>
> [Ppis]
> diff --git a/Platform/RaspberryPi/Library/PlatformLib/RaspberryPiMem.c
> b/Platform/RaspberryPi/Library/PlatformLib/RaspberryPiMem.c
> index 2bfd3f020a6e..1a6a13b9591b 100644
> --- a/Platform/RaspberryPi/Library/PlatformLib/RaspberryPiMem.c
> +++ b/Platform/RaspberryPi/Library/PlatformLib/RaspberryPiMem.c
> @@ -1,7 +1,9 @@
> /** @file
> *
> + * Copyright (c) 2019, Pete Batard <p...@akeo.ie>
> * Copyright (c) 2017-2018, Andrey Warkentin <andrey.warken...@gmail.com>
> * Copyright (c) 2014, Linaro Limited. All rights reserved.
> + * Copyright (c) 2013-2018, ARM Limited. All rights reserved.
This confuses me slightly - is it an indication that some code has
been copied from a file including this copyright?
> *
> * SPDX-License-Identifier: BSD-2-Clause-Patent
> *
> @@ -9,8 +11,11 @@
>
> #include <Library/ArmPlatformLib.h>
> #include <Library/DebugLib.h>
> -#include <IndustryStandard/Bcm2836.h>
> #include <Library/PcdLib.h>
> +#include <Library/RPiMem.h>
> +#include <Library/MemoryAllocationLib.h>
Could you move MemoryAllocationLib.h above PcdLib.h?
/
Leif
> +#include <IndustryStandard/Bcm2711.h>
> +#include <IndustryStandard/Bcm2836.h>
>
> UINT64 mSystemMemoryBase;
> extern UINT64 mSystemMemoryEnd;
> @@ -18,6 +23,13 @@ UINT64 mVideoCoreBase;
> UINT64 mVideoCoreSize;
> UINT32 mBoardRevision;
>
> +
> +// The total number of descriptors, including the final "end-of-table"
> descriptor.
> +#define MAX_VIRTUAL_MEMORY_MAP_DESCRIPTORS 10
> +
> +STATIC BOOLEAN VirtualMemoryInfoInitialized = FALSE;
> +STATIC RPI_MEMORY_REGION_INFO
> VirtualMemoryInfo[MAX_VIRTUAL_MEMORY_MAP_DESCRIPTORS];
> +
> #define VariablesSize (FixedPcdGet32(PcdFlashNvStorageVariableSize) + \
> FixedPcdGet32(PcdFlashNvStorageFtwWorkingSize) + \
> FixedPcdGet32(PcdFlashNvStorageFtwSpareSize) + \
> @@ -29,49 +41,6 @@ UINT32 mBoardRevision;
>
> #define ATFBase (FixedPcdGet64(PcdFdBaseAddress) + FixedPcdGet32(PcdFdSize))
>
> -STATIC ARM_MEMORY_REGION_DESCRIPTOR RaspberryPiMemoryRegionDescriptor[] = {
> - {
> - /* Firmware Volume. */
> - FixedPcdGet64 (PcdFdBaseAddress), FixedPcdGet64 (PcdFdBaseAddress),
> - FixedPcdGet32 (PcdFdSize) - VariablesSize,
> - ARM_MEMORY_REGION_ATTRIBUTE_WRITE_BACK
> - },
> - {
> - /* Variables Volume. */
> - VariablesBase, VariablesBase,
> - VariablesSize,
> - ARM_MEMORY_REGION_ATTRIBUTE_WRITE_BACK
> - },
> - {
> - /* ATF reserved RAM. */
> - ATFBase, ATFBase,
> - FixedPcdGet64 (PcdSystemMemoryBase) - ATFBase,
> - ARM_MEMORY_REGION_ATTRIBUTE_WRITE_BACK
> - },
> - {
> - /* System RAM. */
> - FixedPcdGet64 (PcdSystemMemoryBase), FixedPcdGet64 (PcdSystemMemoryBase),
> - 0,
> - ARM_MEMORY_REGION_ATTRIBUTE_WRITE_BACK
> - },
> - {
> - /* Reserved GPU RAM. */
> - 0,
> - 0,
> - 0,
> - ARM_MEMORY_REGION_ATTRIBUTE_DEVICE
> - },
> - {
> - /* SOC registers. */
> - BCM2836_SOC_REGISTERS,
> - BCM2836_SOC_REGISTERS,
> - BCM2836_SOC_REGISTER_LENGTH,
> - ARM_MEMORY_REGION_ATTRIBUTE_DEVICE
> - },
> - {
> - }
> -};
> -
> /**
> Return the Virtual Memory Map of your platform
>
> @@ -89,6 +58,11 @@ ArmPlatformGetVirtualMemoryMap (
> IN ARM_MEMORY_REGION_DESCRIPTOR** VirtualMemoryMap
> )
> {
> + UINTN Index = 0;
> + UINTN GpuIndex;
> + INT64 ExtendedMemorySize;
> + ARM_MEMORY_REGION_DESCRIPTOR *VirtualMemoryTable;
> +
> // Early output of the info we got from VideoCore can prove valuable.
> DEBUG ((DEBUG_INFO, "Board Rev: 0x%lX\n", mBoardRevision));
> DEBUG ((DEBUG_INFO, "Base RAM : 0x%ll08X (Size 0x%ll08X)\n",
> mSystemMemoryBase, mSystemMemoryEnd + 1));
> @@ -97,68 +71,120 @@ ArmPlatformGetVirtualMemoryMap (
> ASSERT (mSystemMemoryBase == 0);
> ASSERT (VirtualMemoryMap != NULL);
>
> - RaspberryPiMemoryRegionDescriptor[3].Length = mSystemMemoryEnd + 1 -
> - FixedPcdGet64 (PcdSystemMemoryBase);
> -
> - RaspberryPiMemoryRegionDescriptor[4].PhysicalBase =
> - RaspberryPiMemoryRegionDescriptor[3].PhysicalBase +
> - RaspberryPiMemoryRegionDescriptor[3].Length;
> -
> - RaspberryPiMemoryRegionDescriptor[4].VirtualBase =
> - RaspberryPiMemoryRegionDescriptor[4].PhysicalBase;
> -
> - RaspberryPiMemoryRegionDescriptor[4].Length =
> - RaspberryPiMemoryRegionDescriptor[5].PhysicalBase -
> - RaspberryPiMemoryRegionDescriptor[4].PhysicalBase;
> -
> - DEBUG ((DEBUG_INFO, "FD:\n"
> - "\tPhysicalBase: 0x%lX\n"
> - "\tVirtualBase: 0x%lX\n"
> - "\tLength: 0x%lX\n",
> - RaspberryPiMemoryRegionDescriptor[0].PhysicalBase,
> - RaspberryPiMemoryRegionDescriptor[0].VirtualBase,
> - RaspberryPiMemoryRegionDescriptor[0].Length +
> - RaspberryPiMemoryRegionDescriptor[1].Length));
> -
> - DEBUG ((DEBUG_INFO, "Variables (part of FD):\n"
> - "\tPhysicalBase: 0x%lX\n"
> - "\tVirtualBase: 0x%lX\n"
> - "\tLength: 0x%lX\n",
> - RaspberryPiMemoryRegionDescriptor[1].PhysicalBase,
> - RaspberryPiMemoryRegionDescriptor[1].VirtualBase,
> - RaspberryPiMemoryRegionDescriptor[1].Length));
> -
> - DEBUG ((DEBUG_INFO, "ATF RAM:\n"
> - "\tPhysicalBase: 0x%lX\n"
> - "\tVirtualBase: 0x%lX\n"
> - "\tLength: 0x%lX\n",
> - RaspberryPiMemoryRegionDescriptor[2].PhysicalBase,
> - RaspberryPiMemoryRegionDescriptor[2].VirtualBase,
> - RaspberryPiMemoryRegionDescriptor[2].Length));
> -
> - DEBUG ((DEBUG_INFO, "System RAM:\n"
> - "\tPhysicalBase: 0x%lX\n"
> - "\tVirtualBase: 0x%lX\n"
> - "\tLength: 0x%lX\n",
> - RaspberryPiMemoryRegionDescriptor[3].PhysicalBase,
> - RaspberryPiMemoryRegionDescriptor[3].VirtualBase,
> - RaspberryPiMemoryRegionDescriptor[3].Length));
> -
> - DEBUG ((DEBUG_INFO, "GPU Reserved:\n"
> - "\tPhysicalBase: 0x%lX\n"
> - "\tVirtualBase: 0x%lX\n"
> - "\tLength: 0x%lX\n",
> - RaspberryPiMemoryRegionDescriptor[4].PhysicalBase,
> - RaspberryPiMemoryRegionDescriptor[4].VirtualBase,
> - RaspberryPiMemoryRegionDescriptor[4].Length));
> -
> - DEBUG ((DEBUG_INFO, "SoC reserved:\n"
> - "\tPhysicalBase: 0x%lX\n"
> - "\tVirtualBase: 0x%lX\n"
> - "\tLength: 0x%lX\n",
> - RaspberryPiMemoryRegionDescriptor[5].PhysicalBase,
> - RaspberryPiMemoryRegionDescriptor[5].VirtualBase,
> - RaspberryPiMemoryRegionDescriptor[5].Length));
> -
> - *VirtualMemoryMap = RaspberryPiMemoryRegionDescriptor;
> + VirtualMemoryTable = (ARM_MEMORY_REGION_DESCRIPTOR*)AllocatePages
> + (EFI_SIZE_TO_PAGES (sizeof
> (ARM_MEMORY_REGION_DESCRIPTOR) *
> + MAX_VIRTUAL_MEMORY_MAP_DESCRIPTORS));
> + if (VirtualMemoryTable == NULL) {
> + return;
> + }
> +
> +
> + // Firmware Volume
> + VirtualMemoryTable[Index].PhysicalBase = FixedPcdGet64
> (PcdFdBaseAddress);
> + VirtualMemoryTable[Index].VirtualBase =
> VirtualMemoryTable[Index].PhysicalBase;
> + VirtualMemoryTable[Index].Length = FixedPcdGet32 (PcdFdSize) -
> VariablesSize;
> + VirtualMemoryTable[Index].Attributes =
> ARM_MEMORY_REGION_ATTRIBUTE_WRITE_BACK;
> + VirtualMemoryInfo[Index].Type = RPI_MEM_RESERVED_REGION;
> + VirtualMemoryInfo[Index++].Name = L"FD";
> +
> + // Variable Volume
> + VirtualMemoryTable[Index].PhysicalBase = VariablesBase;
> + VirtualMemoryTable[Index].VirtualBase =
> VirtualMemoryTable[Index].PhysicalBase;
> + VirtualMemoryTable[Index].Length = VariablesSize;
> + VirtualMemoryTable[Index].Attributes =
> ARM_MEMORY_REGION_ATTRIBUTE_WRITE_BACK;
> + VirtualMemoryInfo[Index].Type = RPI_MEM_RUNTIME_REGION;
> + VirtualMemoryInfo[Index++].Name = L"FD Variables";
> +
> + // TF-A reserved RAM
> + VirtualMemoryTable[Index].PhysicalBase = ATFBase;
> + VirtualMemoryTable[Index].VirtualBase =
> VirtualMemoryTable[Index].PhysicalBase;
> + VirtualMemoryTable[Index].Length = FixedPcdGet64
> (PcdSystemMemoryBase) - ATFBase;
> + VirtualMemoryTable[Index].Attributes =
> ARM_MEMORY_REGION_ATTRIBUTE_WRITE_BACK;
> + VirtualMemoryInfo[Index].Type = RPI_MEM_RESERVED_REGION;
> + VirtualMemoryInfo[Index++].Name = L"TF-A RAM";
> +
> + // Base System RAM
> + VirtualMemoryTable[Index].PhysicalBase = FixedPcdGet64
> (PcdSystemMemoryBase);
> + VirtualMemoryTable[Index].VirtualBase =
> VirtualMemoryTable[Index].PhysicalBase;
> + VirtualMemoryTable[Index].Length = mSystemMemoryEnd + 1 -
> FixedPcdGet64 (PcdSystemMemoryBase);
> + VirtualMemoryTable[Index].Attributes =
> ARM_MEMORY_REGION_ATTRIBUTE_WRITE_BACK;
> + VirtualMemoryInfo[Index].Type = RPI_MEM_BASIC_REGION;
> + VirtualMemoryInfo[Index++].Name = L"Base System RAM";
> +
> + // GPU Reserved
> + GpuIndex = Index;
> + VirtualMemoryTable[Index].PhysicalBase = mVideoCoreBase;
> + VirtualMemoryTable[Index].VirtualBase =
> VirtualMemoryTable[Index].PhysicalBase;
> + VirtualMemoryTable[Index].Length = mVideoCoreSize;
> + VirtualMemoryTable[Index].Attributes =
> ARM_MEMORY_REGION_ATTRIBUTE_DEVICE;
> + VirtualMemoryInfo[Index].Type = RPI_MEM_RESERVED_REGION;
> + VirtualMemoryInfo[Index++].Name = L"GPU Reserved";
> +
> + // Compute the amount of extended RAM available on this platform
> + ExtendedMemorySize = SIZE_256MB;
> + ExtendedMemorySize <<= (mBoardRevision >> 20) & 0x07;
> + ExtendedMemorySize -= SIZE_1GB;
> + if (ExtendedMemorySize > 0) {
> + VirtualMemoryTable[Index].PhysicalBase = FixedPcdGet64
> (PcdExtendedMemoryBase);
> + VirtualMemoryTable[Index].VirtualBase =
> VirtualMemoryTable[Index].PhysicalBase;
> + VirtualMemoryTable[Index].Length = ExtendedMemorySize;
> + VirtualMemoryTable[Index].Attributes =
> ARM_MEMORY_REGION_ATTRIBUTE_WRITE_BACK;
> + VirtualMemoryInfo[Index].Type = RPI_MEM_BASIC_REGION;
> + VirtualMemoryInfo[Index++].Name = L"Extended System RAM";
> + }
> +
> + // Extended SoC registers (PCIe, genet, ...)
> + if (BCM2711_SOC_REGISTERS > 0) {
> + VirtualMemoryTable[Index].PhysicalBase = BCM2711_SOC_REGISTERS;
> + VirtualMemoryTable[Index].VirtualBase =
> VirtualMemoryTable[Index].PhysicalBase;
> + VirtualMemoryTable[Index].Length = BCM2711_SOC_REGISTER_LENGTH;
> + VirtualMemoryTable[Index].Attributes =
> ARM_MEMORY_REGION_ATTRIBUTE_DEVICE;
> + VirtualMemoryInfo[Index].Type = RPI_MEM_RESERVED_REGION;
> + VirtualMemoryInfo[Index++].Name = L"SoC Reserved (27xx)";
> + }
> +
> + // Base SoC registers
> + VirtualMemoryTable[Index].PhysicalBase = BCM2836_SOC_REGISTERS;
> + // On the Pi 3 the SoC registers may overlap VideoCore => fix this
> + if (VirtualMemoryTable[GpuIndex].PhysicalBase +
> VirtualMemoryTable[GpuIndex].Length > VirtualMemoryTable[Index].PhysicalBase)
> {
> + VirtualMemoryTable[GpuIndex].Length =
> VirtualMemoryTable[Index].PhysicalBase -
> VirtualMemoryTable[GpuIndex].PhysicalBase;
> + }
> + VirtualMemoryTable[Index].VirtualBase =
> VirtualMemoryTable[Index].PhysicalBase;
> + VirtualMemoryTable[Index].Length = BCM2836_SOC_REGISTER_LENGTH;
> + VirtualMemoryTable[Index].Attributes =
> ARM_MEMORY_REGION_ATTRIBUTE_DEVICE;
> + VirtualMemoryInfo[Index].Type = RPI_MEM_RESERVED_REGION;
> + VirtualMemoryInfo[Index++].Name = L"SoC Reserved (283x)";
> +
> + // End of Table
> + VirtualMemoryTable[Index].PhysicalBase = 0;
> + VirtualMemoryTable[Index].VirtualBase = 0;
> + VirtualMemoryTable[Index].Length = 0;
> + VirtualMemoryTable[Index++].Attributes =
> (ARM_MEMORY_REGION_ATTRIBUTES)0;
> +
> + ASSERT(Index <= MAX_VIRTUAL_MEMORY_MAP_DESCRIPTORS);
> +
> + *VirtualMemoryMap = VirtualMemoryTable;
> + VirtualMemoryInfoInitialized = TRUE;
> +}
> +
> +/**
> + Return additional memory info not populated by the above call.
> +
> + This call should follow the one to ArmPlatformGetVirtualMemoryMap ().
> +
> +**/
> +VOID
> +RpiPlatformGetVirtualMemoryInfo (
> + IN RPI_MEMORY_REGION_INFO** MemoryInfo
> + )
> +{
> + ASSERT (VirtualMemoryInfo != NULL);
> +
> + if (!VirtualMemoryInfoInitialized) {
> + DEBUG ((DEBUG_ERROR,
> + "ArmPlatformGetVirtualMemoryMap must be called before
> RpiPlatformGetVirtualMemoryInfo.\n"));
> + return;
> + }
> +
> + *MemoryInfo = VirtualMemoryInfo;
> }
> diff --git a/Platform/RaspberryPi/RaspberryPi.dec
> b/Platform/RaspberryPi/RaspberryPi.dec
> index 3e9171eccb13..c7e17350544a 100644
> --- a/Platform/RaspberryPi/RaspberryPi.dec
> +++ b/Platform/RaspberryPi/RaspberryPi.dec
> @@ -42,6 +42,7 @@ [PcdsFixedAtBuild.common]
> gRaspberryPiTokenSpaceGuid.PcdNvStorageVariableBase|0x0|UINT32|0x00000005
> gRaspberryPiTokenSpaceGuid.PcdNvStorageFtwSpareBase|0x0|UINT32|0x00000006
> gRaspberryPiTokenSpaceGuid.PcdNvStorageFtwWorkingBase|0x0|UINT32|0x00000007
> + gRaspberryPiTokenSpaceGuid.PcdExtendedMemoryBase|0x0|UINT32|0x00000008
>
> [PcdsFixedAtBuild, PcdsPatchableInModule, PcdsDynamic, PcdsDynamicEx]
> gRaspberryPiTokenSpaceGuid.PcdCpuClock|0|UINT32|0x0000000d
> --
> 2.21.0.windows.1
>
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