You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
97 lines
2.7 KiB
97 lines
2.7 KiB
4 years ago
|
/** @file
|
||
|
|
MCFG table parser
|
||
|
|
|
||
|
|
Copyright (c) 2016 - 2018, ARM Limited. All rights reserved.
|
||
|
|
This program and the accompanying materials
|
||
|
|
are licensed and made available under the terms and conditions of the BSD License
|
||
|
|
which accompanies this distribution. The full text of the license may be found at
|
||
|
|
http://opensource.org/licenses/bsd-license.php
|
||
|
|
|
||
|
|
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
|
||
|
|
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
|
||
|
|
|
||
|
|
@par Reference(s):
|
||
|
|
- PCI Firmware Specification - Revision 3.2, January 26, 2015.
|
||
|
|
**/
|
||
|
|
|
||
|
|
#include <IndustryStandard/Acpi.h>
|
||
|
|
#include <Library/UefiLib.h>
|
||
|
|
#include "AcpiParser.h"
|
||
|
|
#include "AcpiTableParser.h"
|
||
|
|
|
||
|
|
// Local variables
|
||
|
|
STATIC ACPI_DESCRIPTION_HEADER_INFO AcpiHdrInfo;
|
||
|
|
|
||
|
|
/**
|
||
|
|
An ACPI_PARSER array describing the ACPI MCFG Table.
|
||
|
|
**/
|
||
|
|
STATIC CONST ACPI_PARSER McfgParser[] = {
|
||
|
|
PARSE_ACPI_HEADER (&AcpiHdrInfo),
|
||
|
|
{L"Reserved", 8, 36, L"0x%lx", NULL, NULL, NULL, NULL},
|
||
|
|
};
|
||
|
|
|
||
|
|
/**
|
||
|
|
An ACPI_PARSER array describing the PCI configuration Space Base Address structure.
|
||
|
|
**/
|
||
|
|
STATIC CONST ACPI_PARSER PciCfgSpaceBaseAddrParser[] = {
|
||
|
|
{L"Base Address", 8, 0, L"0x%lx", NULL, NULL, NULL, NULL},
|
||
|
|
{L"PCI Segment Group No.", 2, 8, L"0x%x", NULL, NULL, NULL, NULL},
|
||
|
|
{L"Start Bus No.", 1, 10, L"0x%x", NULL, NULL, NULL, NULL},
|
||
|
|
{L"End Bus No.", 1, 11, L"0x%x", NULL, NULL, NULL, NULL},
|
||
|
|
{L"Reserved", 4, 12, L"0x%x", NULL, NULL, NULL, NULL}
|
||
|
|
};
|
||
|
|
|
||
|
|
/**
|
||
|
|
This function parses the ACPI MCFG table.
|
||
|
|
When trace is enabled this function parses the MCFG table and
|
||
|
|
traces the ACPI table fields.
|
||
|
|
|
||
|
|
This function also performs validation of the ACPI table fields.
|
||
|
|
|
||
|
|
@param [in] Trace If TRUE, trace the ACPI fields.
|
||
|
|
@param [in] Ptr Pointer to the start of the buffer.
|
||
|
|
@param [in] AcpiTableLength Length of the ACPI table.
|
||
|
|
@param [in] AcpiTableRevision Revision of the ACPI table.
|
||
|
|
**/
|
||
|
|
VOID
|
||
|
|
EFIAPI
|
||
|
|
ParseAcpiMcfg (
|
||
|
|
IN BOOLEAN Trace,
|
||
|
|
IN UINT8* Ptr,
|
||
|
|
IN UINT32 AcpiTableLength,
|
||
|
|
IN UINT8 AcpiTableRevision
|
||
|
|
)
|
||
|
|
{
|
||
|
|
UINT32 Offset;
|
||
|
|
UINT32 PciCfgOffset;
|
||
|
|
UINT8* PciCfgSpacePtr;
|
||
|
|
|
||
|
|
if (!Trace) {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
Offset = ParseAcpi (
|
||
|
|
TRUE,
|
||
|
|
0,
|
||
|
|
"MCFG",
|
||
|
|
Ptr,
|
||
|
|
AcpiTableLength,
|
||
|
|
PARSER_PARAMS (McfgParser)
|
||
|
|
);
|
||
|
|
|
||
|
|
PciCfgSpacePtr = Ptr + Offset;
|
||
|
|
|
||
|
|
while (Offset < AcpiTableLength) {
|
||
|
|
PciCfgOffset = ParseAcpi (
|
||
|
|
TRUE,
|
||
|
|
2,
|
||
|
|
"PCI Configuration Space",
|
||
|
|
PciCfgSpacePtr,
|
||
|
|
(AcpiTableLength - Offset),
|
||
|
|
PARSER_PARAMS (PciCfgSpaceBaseAddrParser)
|
||
|
|
);
|
||
|
|
PciCfgSpacePtr += PciCfgOffset;
|
||
|
|
Offset += PciCfgOffset;
|
||
|
|
}
|
||
|
|
}
|