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/*++
Copyright (c) 2004 - 2014, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
Module Name:
EfiRegTableLib.h
Abstract:
Definitions and macros for building register tables for chipset
initialization..
Components linking this lib must include CpuIo, PciRootBridgeIo, and
BootScriptSave protocols in their DPX.
--*/
#ifndef EFI_REG_TABLE_H
#define EFI_REG_TABLE_H
#include <PiDxe.h>
#include <Library/BaseLib.h>
#include <Library/DebugLib.h>
#include <Library/UefiLib.h>
#include <Library/UefiDriverEntryPoint.h>
#include <Protocol/CpuIo.h>
#include <Protocol/BootScriptSave.h>
#include <Framework/BootScript.h>
#include <Protocol/PciRootBridgeIo.h>
#define OPCODE_BASE(OpCode) ((UINT8)((OpCode) & 0xFF))
#define OPCODE_FLAGS(OpCode) ((UINT8)(((OpCode) >> 8) & 0xFF))
#define OPCODE_EXTRA_DATA(OpCode) ((UINT16)((OpCode) >> 16))
//
// RegTable Base OpCodes
//
#define OP_TERMINATE_TABLE 0
#define OP_MEM_WRITE 1
#define OP_MEM_READ_MODIFY_WRITE 2
#define OP_IO_WRITE 3
#define OP_IO_READ_MODIFY_WRITE 4
#define OP_PCI_WRITE 5
#define OP_PCI_READ_MODIFY_WRITE 6
#define OP_STALL 7
//
// RegTable OpCode Flags
//
#define OPCODE_FLAG_S3SAVE 1
#define TERMINATE_TABLE { (UINT32) OP_TERMINATE_TABLE, (UINT32) 0, (UINT32) 0 }
//
// REG_TABLE_ENTRY_PCI_WRITE encodes the width in the upper bits of the OpCode
// as one of the EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH values
//
typedef struct {
UINT32 OpCode;
UINT32 PciAddress;
UINT32 Data;
} EFI_REG_TABLE_PCI_WRITE;
#define PCI_WRITE(Bus, Dev, Fnc, Reg, Width, Data, S3Flag) \
{ \
(UINT32) (OP_PCI_WRITE | ((S3Flag) << 8) | ((Width) << 16)), \
(UINT32) (EFI_PCI_ADDRESS ((Bus), (Dev), (Fnc), (Reg))), \
(UINT32) (Data), \
(UINT32) (0) \
}
typedef struct {
UINT32 OpCode;
UINT32 MemAddress;
UINT32 Data;
} EFI_REG_TABLE_MEM_WRITE;
typedef struct {
UINT32 OpCode;
UINT32 PciAddress;
UINT32 OrMask;
UINT32 AndMask;
} EFI_REG_TABLE_PCI_READ_MODIFY_WRITE;
#define PCI_READ_MODIFY_WRITE(Bus, Dev, Fnc, Reg, Width, OrMask, AndMask, S3Flag) \
{ \
(UINT32) (OP_PCI_READ_MODIFY_WRITE | ((S3Flag) << 8) | ((Width) << 16)), \
(UINT32) (EFI_PCI_ADDRESS ((Bus), (Dev), (Fnc), (Reg))), \
(UINT32) (OrMask), \
(UINT32) (AndMask) \
}
typedef struct {
UINT32 OpCode;
UINT32 MemAddress;
UINT32 OrMask;
UINT32 AndMask;
} EFI_REG_TABLE_MEM_READ_MODIFY_WRITE;
#define MEM_READ_MODIFY_WRITE(Address, Width, OrMask, AndMask, S3Flag) \
{ \
(UINT32) (OP_MEM_READ_MODIFY_WRITE | ((S3Flag) << 8) | ((Width) << 16)), \
(UINT32) (Address), \
(UINT32) (OrMask), \
(UINT32) (AndMask) \
}
typedef struct {
UINT32 OpCode;
UINT32 Field2;
UINT32 Field3;
UINT32 Field4;
} EFI_REG_TABLE_GENERIC;
typedef union {
EFI_REG_TABLE_GENERIC Generic;
EFI_REG_TABLE_PCI_WRITE PciWrite;
EFI_REG_TABLE_PCI_READ_MODIFY_WRITE PciReadModifyWrite;
EFI_REG_TABLE_MEM_READ_MODIFY_WRITE MemReadModifyWrite;
} EFI_REG_TABLE;
/**
Processes register table assuming which may contain PCI, IO, MEM, and STALL
entries.
No parameter checking is done so the caller must be careful about omitting
values for PciRootBridgeIo or CpuIo parameters. If the regtable does
not contain any PCI accesses, it is safe to omit the PciRootBridgeIo (supply
NULL). If the regtable does not contain any IO or Mem entries, it is safe to
omit the CpuIo (supply NULL).
The RegTableEntry parameter is not checked, but is required.
gBS is assumed to have been defined and is used when processing stalls.
The function processes each entry sequentially until an OP_TERMINATE_TABLE
entry is encountered.
@param[in] RegTableEntry A pointer to the register table to process
@param[in] PciRootBridgeIo A pointer to the instance of PciRootBridgeIo that is used
when processing PCI table entries
@param[in] CpuIo A pointer to the instance of CpuIo that is used when processing IO and
MEM table entries
@retval Nothing.
**/
VOID
ProcessRegTablePci (
EFI_REG_TABLE * RegTableEntry,
EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL * PciRootBridgeIo,
EFI_CPU_IO_PROTOCOL * CpuIo
);
/**
Processes register table assuming which may contain IO, MEM, and STALL
entries, but must NOT contain any PCI entries. Any PCI entries cause an
ASSERT in a DEBUG build and are skipped in a free build.
No parameter checking is done. Both RegTableEntry and CpuIo parameters are
required.
gBS is assumed to have been defined and is used when processing stalls.
The function processes each entry sequentially until an OP_TERMINATE_TABLE
entry is encountered.
@param[in] RegTableEntry - A pointer to the register table to process
@param[in] CpuIo - A pointer to the instance of CpuIo that is used when processing IO and
MEM table entries
@retval Nothing.
**/
VOID
ProcessRegTableCpu (
EFI_REG_TABLE * RegTableEntry,
EFI_CPU_IO_PROTOCOL * CpuIo
);
#endif
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