/** @file
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*
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* Core System Resource Table (CSRT)
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*
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* Copyright (c) 2019, ARM Ltd. All rights reserved.
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* Copyright (c) Microsoft Corporation. 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 <IndustryStandard/Acpi.h>
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#include <IndustryStandard/Bcm2836.h>
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#include "AcpiTables.h"
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#define RPI_DMA_MAX_REQ_LINES 32
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#pragma pack (push, 1)
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//------------------------------------------------------------------------
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// DMA Controller Vendor Data
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//------------------------------------------------------------------------
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typedef struct
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{
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UINT32 Length;
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UINT32 Type;
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UINT64 ChannelsBaseAddress;
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UINT32 ChannelsBaseSize;
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UINT64 ControllerBaseAddress;
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UINT32 ControllerBaseSize;
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UINT32 ChannelCount;
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UINT32 ControllerInterrupt;
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UINT32 MinimumRequestLine;
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UINT32 MaximumRequestLine;
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BOOLEAN CacheCoherent;
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} DMA_CONTROLLER_VENDOR_DATA;
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//------------------------------------------------------------------------
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// DMA Controller
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//------------------------------------------------------------------------
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typedef struct
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{
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EFI_ACPI_6_3_CSRT_RESOURCE_DESCRIPTOR_HEADER DmaControllerHeader;
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DMA_CONTROLLER_VENDOR_DATA ControllerVendorData;
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} RD_DMA_CONTROLLER;
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//------------------------------------------------------------------------
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// DMA Channel Vendor Data
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//------------------------------------------------------------------------
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typedef struct
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{
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UINT32 ChannelNumber;
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UINT32 ChannelInterrupt;
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UINT16 IsReservedChannel;
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UINT16 NoSrcNoDestAddrIncr;
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} DMA_CHANNEL_VENDOR_DATA;
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//------------------------------------------------------------------------
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// DMA Channel
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//------------------------------------------------------------------------
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typedef struct
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{
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EFI_ACPI_6_3_CSRT_RESOURCE_DESCRIPTOR_HEADER DmaChannelHeader;
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DMA_CHANNEL_VENDOR_DATA ChannelVendorData;
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} RD_DMA_CHANNEL;
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//------------------------------------------------------------------------
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// DMA Resource Group
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//------------------------------------------------------------------------
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typedef struct
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{
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EFI_ACPI_6_3_CSRT_RESOURCE_GROUP_HEADER ResGroupHeader;
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RD_DMA_CONTROLLER DmaController;
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RD_DMA_CHANNEL DmaChannels[RPI_DMA_CHANNEL_COUNT];
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} RG_DMA;
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//----------------------------------------------------------------------------
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// CSRT table structure - current revision only includes DMA
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//----------------------------------------------------------------------------
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typedef struct
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{
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// Standard ACPI Header
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EFI_ACPI_DESCRIPTION_HEADER CsrtHeader;
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// DMA Resource Group
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RG_DMA DmaResourceGroup;
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} EFI_ACPI_6_3_CSRT_TABLE;
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EFI_ACPI_6_3_CSRT_TABLE Csrt =
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{
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//------------------------------------------------------------------------
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// ACPI Table Header
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//------------------------------------------------------------------------
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{
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EFI_ACPI_6_3_CORE_SYSTEM_RESOURCE_TABLE_SIGNATURE, // Signature "CSRT"
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sizeof (EFI_ACPI_DESCRIPTION_HEADER) + sizeof (RG_DMA), // Length
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EFI_ACPI_6_3_CSRT_REVISION, // Revision
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0x00, // Checksum calculated at runtime.
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EFI_ACPI_OEM_ID, // OEMID is a 6 bytes long field
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EFI_ACPI_OEM_TABLE_ID, // OEM table identification (8 bytes long)
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EFI_ACPI_OEM_REVISION, // OEM revision number.
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EFI_ACPI_CREATOR_ID, // ASL compiler vendor ID.
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EFI_ACPI_CREATOR_REVISION // ASL compiler revision number.
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},
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//------------------------------------------------------------------------
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// DMA Resource Group
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//------------------------------------------------------------------------
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{
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//------------------------------------------------------------------------
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// DMA Resource Group Header
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//------------------------------------------------------------------------
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{
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sizeof (RG_DMA), // Resource Group Length
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EFI_ACPI_VENDOR_ID, // VendorId
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0, // SubvendorId
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EFI_ACPI_CSRT_DEVICE_ID_DMA, // DeviceId 9
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0, // SubdeviceId
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0, // Revision
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0, // Reserved
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0 // SharedInfoLength
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},
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//-------------------------------------------------------------------------------
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// Resource Descriptor - DMA Controller
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//-------------------------------------------------------------------------------
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{
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{
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sizeof (RD_DMA_CONTROLLER), // Length of this Resource Descriptor
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EFI_ACPI_CSRT_RESOURCE_TYPE_DMA, // Type for this resource 3=DMA
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EFI_ACPI_CSRT_RESOURCE_SUBTYPE_DMA_CONTROLLER, // Subtype for this resource 1=DMA Controller
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EFI_ACPI_CSRT_RESOURCE_ID_IN_DMA_GRP + 0, // ResourceId - 1st DMA controller
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},
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{
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sizeof (DMA_CONTROLLER_VENDOR_DATA), // Controller vendor data here
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1,
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BCM2836_DMA0_BASE_ADDRESS, // Base address for channels
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RPI_DMA_CHANNEL_COUNT * BCM2836_DMA_CHANNEL_LENGTH, // Base size = Number of channels x channel size
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BCM2836_DMA_CTRL_BASE_ADDRESS,// Base address for controller
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8, // Base size = two registers
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RPI_DMA_USED_CHANNEL_COUNT,
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0, // cannot use controller interrupt
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0, // Minimum Request Line
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RPI_DMA_MAX_REQ_LINES - 1, // Maximum Request Line
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FALSE,
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},
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},
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//------------------------------------------------------------------------
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// Resource Descriptor(s) - DMA Channels 0 to n-1
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//------------------------------------------------------------------------
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{
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// Channel 0
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{
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{
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sizeof (RD_DMA_CHANNEL), // Length of this Resource Descriptor
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EFI_ACPI_CSRT_RESOURCE_TYPE_DMA, // Type for this resource 3=DMA
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EFI_ACPI_CSRT_RESOURCE_SUBTYPE_DMA_CHANNEL, // Subtype for this resource 0=DMA Channel
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EFI_ACPI_CSRT_RESOURCE_ID_IN_DMA_GRP + 1, // ResourceId
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},
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{
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0, // Channel vendor data here
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0x30, // 16+32 dma_int[0]
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0,
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0
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},
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},
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// Channel 1 reserved
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{
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{
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sizeof (RD_DMA_CHANNEL),
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EFI_ACPI_CSRT_RESOURCE_TYPE_DMA,
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EFI_ACPI_CSRT_RESOURCE_SUBTYPE_DMA_CHANNEL,
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EFI_ACPI_CSRT_RESOURCE_ID_IN_DMA_GRP + 2, // ResourceId
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},
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{
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1, // Channel vendor data here
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0x31, // 17+32 dma_int[1]
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1,
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0
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},
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},
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// Channel 2 - VC4 use only
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{
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{
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sizeof (RD_DMA_CHANNEL),
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EFI_ACPI_CSRT_RESOURCE_TYPE_DMA,
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EFI_ACPI_CSRT_RESOURCE_SUBTYPE_DMA_CHANNEL,
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EFI_ACPI_CSRT_RESOURCE_ID_IN_DMA_GRP + 3, // ResourceId
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},
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{
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2, // Channel vendor data here
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0x32, // 18+32 dma_int[2]
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1,
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0
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},
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},
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// Channel 3 - VC4 use only
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{
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{
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sizeof (RD_DMA_CHANNEL),
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EFI_ACPI_CSRT_RESOURCE_TYPE_DMA,
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EFI_ACPI_CSRT_RESOURCE_SUBTYPE_DMA_CHANNEL,
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EFI_ACPI_CSRT_RESOURCE_ID_IN_DMA_GRP + 4,
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},
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{
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3, // Channel vendor data here
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0x33, // 19+32 dma_int[3]
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1,
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0
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},
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},
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// channel 4
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{
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{
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sizeof (RD_DMA_CHANNEL),
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EFI_ACPI_CSRT_RESOURCE_TYPE_DMA,
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EFI_ACPI_CSRT_RESOURCE_SUBTYPE_DMA_CHANNEL,
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EFI_ACPI_CSRT_RESOURCE_ID_IN_DMA_GRP + 5,
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},
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{
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4, // Channel vendor data here
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0x34, // 20+32 dma_int[4]
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0,
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1 // SD host controller candidate
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},
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},
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// Channel 5
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{
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{
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sizeof (RD_DMA_CHANNEL),
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EFI_ACPI_CSRT_RESOURCE_TYPE_DMA,
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EFI_ACPI_CSRT_RESOURCE_SUBTYPE_DMA_CHANNEL,
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EFI_ACPI_CSRT_RESOURCE_ID_IN_DMA_GRP + 6,
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},
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{
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5, // Channel vendor data here
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0x35, // 21+32 dma_int[5]
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0,
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0
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},
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},
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// Channel 6 is reserved
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{
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{
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sizeof (RD_DMA_CHANNEL),
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EFI_ACPI_CSRT_RESOURCE_TYPE_DMA,
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EFI_ACPI_CSRT_RESOURCE_SUBTYPE_DMA_CHANNEL,
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EFI_ACPI_CSRT_RESOURCE_ID_IN_DMA_GRP + 7,
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},
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{
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6, // Channel vendor data here
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0x36, // 22+32 dma_int[6]
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1,
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0
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},
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},
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// Channel 7 is reserved
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{
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{
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sizeof (RD_DMA_CHANNEL),
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EFI_ACPI_CSRT_RESOURCE_TYPE_DMA,
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EFI_ACPI_CSRT_RESOURCE_SUBTYPE_DMA_CHANNEL,
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EFI_ACPI_CSRT_RESOURCE_ID_IN_DMA_GRP + 8,
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},
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{
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7, // Channel vendor data here
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0x37, // 23+32 dma_int[7]
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1,
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0
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},
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},
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// Channel 8
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{
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{
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sizeof (RD_DMA_CHANNEL),
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EFI_ACPI_CSRT_RESOURCE_TYPE_DMA,
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EFI_ACPI_CSRT_RESOURCE_SUBTYPE_DMA_CHANNEL,
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EFI_ACPI_CSRT_RESOURCE_ID_IN_DMA_GRP + 9,
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},
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{
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8, // Channel vendor data here
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0x38, // 24+32 dma_int[8]
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0,
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0
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},
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},
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// Channel 9
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{
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{
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sizeof (RD_DMA_CHANNEL),
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EFI_ACPI_CSRT_RESOURCE_TYPE_DMA,
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EFI_ACPI_CSRT_RESOURCE_SUBTYPE_DMA_CHANNEL,
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EFI_ACPI_CSRT_RESOURCE_ID_IN_DMA_GRP + 10,
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},
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{
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9, // channel vendor data here
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0x39, // 25+32 dma_int[9]
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0,
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0
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},
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}
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} // End DMA Channels 0 to 14
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} // End DMA Resource group
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};
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#pragma pack(pop)
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//
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// Reference the table being generated to prevent the optimizer from removing the
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// data structure from the executable
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//
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VOID* CONST ReferenceAcpiTable = &Csrt;
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