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/** @file
*
* RPi3 defines for constructing ACPI tables
*
* Copyright (c) 2018, Andrei Warkentin <andrey.warkentin@gmail.com>
* Copyright (c) Microsoft Corporation. All rights reserved.
*
* SPDX-License-Identifier: BSD-2-Clause-Patent
*
**/
#ifndef __ACPITABLES_H__
#define __ACPITABLES_H__
#include <IndustryStandard/Acpi50.h>
#define EFI_ACPI_OEM_ID {'M','C','R','S','F','T'} // OEMID 6 bytes long
#define EFI_ACPI_OEM_TABLE_ID SIGNATURE_64 ('R','P','I','3','E','D','K','2') // OEM table id 8 bytes long
#define EFI_ACPI_OEM_REVISION 0x02000820
#define EFI_ACPI_CREATOR_ID SIGNATURE_32 ('R','P','I','3')
#define EFI_ACPI_CREATOR_REVISION 0x00000097
#define EFI_ACPI_VENDOR_ID SIGNATURE_32 ('M','S','F','T')
#define EFI_ACPI_CSRT_REVISION 0x00000005
#define EFI_ACPI_CSRT_DEVICE_ID_DMA 0x00000009 // Fixed id
#define EFI_ACPI_CSRT_RESOURCE_ID_IN_DMA_GRP 0x0 // Count up from 0
#define RPI3_DMA_CHANNEL_COUNT 10 // All 10 DMA channels are listed, including the reserved ones
#define RPI3_DMA_USED_CHANNEL_COUNT 5 // Use 5 DMA channels
#define EFI_ACPI_5_0_CSRT_REVISION 0x00000000
typedef enum
{
EFI_ACPI_CSRT_RESOURCE_TYPE_RESERVED, // 0
EFI_ACPI_CSRT_RESOURCE_TYPE_INTERRUPT, // 1
EFI_ACPI_CSRT_RESOURCE_TYPE_TIMER, // 2
EFI_ACPI_CSRT_RESOURCE_TYPE_DMA, // 3
EFI_ACPI_CSRT_RESOURCE_TYPE_CACHE, // 4
}
CSRT_RESOURCE_TYPE;
typedef enum
{
EFI_ACPI_CSRT_RESOURCE_SUBTYPE_DMA_CHANNEL, // 0
EFI_ACPI_CSRT_RESOURCE_SUBTYPE_DMA_CONTROLLER // 1
}
CSRT_DMA_SUBTYPE;
//------------------------------------------------------------------------
// CSRT Resource Group header 24 bytes long
//------------------------------------------------------------------------
typedef struct
{
UINT32 Length; // Length
UINT32 VendorID; // 4 bytes
UINT32 SubVendorId; // 4 bytes
UINT16 DeviceId; // 2 bytes
UINT16 SubdeviceId; // 2 bytes
UINT16 Revision; // 2 bytes
UINT16 Reserved; // 2 bytes
UINT32 SharedInfoLength; // 4 bytes
} EFI_ACPI_5_0_CSRT_RESOURCE_GROUP_HEADER;
//------------------------------------------------------------------------
// CSRT Resource Descriptor 12 bytes total
//------------------------------------------------------------------------
typedef struct
{
UINT32 Length; // 4 bytes
UINT16 ResourceType; // 2 bytes
UINT16 ResourceSubType; // 2 bytes
UINT32 UID; // 4 bytes
} EFI_ACPI_5_0_CSRT_RESOURCE_DESCRIPTOR_HEADER;
#endif // __ACPITABLES_H__
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