62cefaf44e
Modify the IORT table parsing logic to prevent reading past the buffer lengths provided. Change DumpIortNodeIdMappings() function's signature and implementation to simplify buffer overrun prevention. Update all calls to this function accordingly. Modify the parser for each type of IORT node such that the offset from the start of the node's buffer is tracked as the parsing function is executed. Again, this change helps prevent buffer overruns. Test that the IORT node buffer fits in the table buffer before the node's buffer contents are dumped. References: - IO Remapping Table (Issue D), Platform Design Document, March 2018 Signed-off-by: Krzysztof Koch <krzysztof.koch@arm.com> Reviewed-by: Alexei Fedorov <Alexei.Fedorov@arm.com> Reviewed-by: Zhichao Gao <zhichao.gao@inte.com> Reviewed-by: Sami Mujawar <sami.mujawar@arm.com>
707 lines
19 KiB
C
707 lines
19 KiB
C
/** @file
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IORT table parser
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Copyright (c) 2016 - 2019, ARM Limited. All rights reserved.
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SPDX-License-Identifier: BSD-2-Clause-Patent
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@par Reference(s):
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- IO Remapping Table, Platform Design Document, Revision C, 15 May 2017
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**/
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#include <IndustryStandard/IoRemappingTable.h>
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#include <Library/PrintLib.h>
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#include <Library/UefiLib.h>
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#include "AcpiParser.h"
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#include "AcpiTableParser.h"
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// Local variables
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STATIC ACPI_DESCRIPTION_HEADER_INFO AcpiHdrInfo;
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STATIC CONST UINT32* IortNodeCount;
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STATIC CONST UINT32* IortNodeOffset;
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STATIC CONST UINT8* IortNodeType;
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STATIC CONST UINT16* IortNodeLength;
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STATIC CONST UINT32* IortIdMappingCount;
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STATIC CONST UINT32* IortIdMappingOffset;
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STATIC CONST UINT32* InterruptContextCount;
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STATIC CONST UINT32* InterruptContextOffset;
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STATIC CONST UINT32* PmuInterruptCount;
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STATIC CONST UINT32* PmuInterruptOffset;
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STATIC CONST UINT32* ItsCount;
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/**
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This function validates the ID Mapping array count for the ITS node.
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@param [in] Ptr Pointer to the start of the field data.
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@param [in] Context Pointer to context specific information e.g. this
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could be a pointer to the ACPI table header.
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**/
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STATIC
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VOID
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EFIAPI
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ValidateItsIdMappingCount (
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IN UINT8* Ptr,
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IN VOID* Context
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)
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{
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if (*(UINT32*)Ptr != 0) {
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IncrementErrorCount ();
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Print (L"\nERROR: IORT ID Mapping count must be zero.");
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}
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}
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/**
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This function validates the ID Mapping array count for the Performance
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Monitoring Counter Group (PMCG) node.
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@param [in] Ptr Pointer to the start of the field data.
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@param [in] Context Pointer to context specific information e.g. this
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could be a pointer to the ACPI table header.
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**/
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STATIC
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VOID
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EFIAPI
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ValidatePmcgIdMappingCount (
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IN UINT8* Ptr,
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IN VOID* Context
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)
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{
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if (*(UINT32*)Ptr > 1) {
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IncrementErrorCount ();
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Print (L"\nERROR: IORT ID Mapping count must not be greater than 1.");
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}
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}
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/**
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This function validates the ID Mapping array offset for the ITS node.
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@param [in] Ptr Pointer to the start of the field data.
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@param [in] Context Pointer to context specific information e.g. this
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could be a pointer to the ACPI table header.
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**/
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STATIC
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VOID
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EFIAPI
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ValidateItsIdArrayReference (
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IN UINT8* Ptr,
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IN VOID* Context
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)
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{
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if (*(UINT32*)Ptr != 0) {
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IncrementErrorCount ();
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Print (L"\nERROR: IORT ID Mapping offset must be zero.");
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}
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}
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/**
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Helper Macro for populating the IORT Node header in the ACPI_PARSER array.
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@param [out] ValidateIdMappingCount Optional pointer to a function for
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validating the ID Mapping count.
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@param [out] ValidateIdArrayReference Optional pointer to a function for
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validating the ID Array reference.
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**/
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#define PARSE_IORT_NODE_HEADER(ValidateIdMappingCount, \
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ValidateIdArrayReference) \
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{ L"Type", 1, 0, L"%d", NULL, (VOID**)&IortNodeType, NULL, NULL }, \
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{ L"Length", 2, 1, L"%d", NULL, (VOID**)&IortNodeLength, NULL, NULL }, \
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{ L"Revision", 1, 3, L"%d", NULL, NULL, NULL, NULL }, \
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{ L"Reserved", 4, 4, L"0x%x", NULL, NULL, NULL, NULL }, \
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{ L"Number of ID mappings", 4, 8, L"%d", NULL, \
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(VOID**)&IortIdMappingCount, ValidateIdMappingCount, NULL }, \
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{ L"Reference to ID Array", 4, 12, L"0x%x", NULL, \
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(VOID**)&IortIdMappingOffset, ValidateIdArrayReference, NULL }
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/**
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An ACPI_PARSER array describing the ACPI IORT Table
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**/
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STATIC CONST ACPI_PARSER IortParser[] = {
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PARSE_ACPI_HEADER (&AcpiHdrInfo),
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{L"Number of IORT Nodes", 4, 36, L"%d", NULL,
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(VOID**)&IortNodeCount, NULL, NULL},
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{L"Offset to Array of IORT Nodes", 4, 40, L"0x%x", NULL,
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(VOID**)&IortNodeOffset, NULL, NULL},
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{L"Reserved", 4, 44, L"0x%x", NULL, NULL, NULL, NULL}
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};
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/**
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An ACPI_PARSER array describing the IORT node header structure.
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**/
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STATIC CONST ACPI_PARSER IortNodeHeaderParser[] = {
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PARSE_IORT_NODE_HEADER (NULL, NULL)
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};
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/**
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An ACPI_PARSER array describing the IORT SMMUv1/2 node.
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**/
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STATIC CONST ACPI_PARSER IortNodeSmmuV1V2Parser[] = {
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PARSE_IORT_NODE_HEADER (NULL, NULL),
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{L"Base Address", 8, 16, L"0x%lx", NULL, NULL, NULL, NULL},
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{L"Span", 8, 24, L"0x%lx", NULL, NULL, NULL, NULL},
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{L"Model", 4, 32, L"%d", NULL, NULL, NULL, NULL},
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{L"Flags", 4, 36, L"0x%x", NULL, NULL, NULL, NULL},
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{L"Reference to Global Interrupt Array", 4, 40, L"0x%x", NULL, NULL, NULL,
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NULL},
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{L"Number of context interrupts", 4, 44, L"%d", NULL,
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(VOID**)&InterruptContextCount, NULL, NULL},
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{L"Reference to Context Interrupt Array", 4, 48, L"0x%x", NULL,
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(VOID**)&InterruptContextOffset, NULL, NULL},
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{L"Number of PMU Interrupts", 4, 52, L"%d", NULL,
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(VOID**)&PmuInterruptCount, NULL, NULL},
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{L"Reference to PMU Interrupt Array", 4, 56, L"0x%x", NULL,
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(VOID**)&PmuInterruptOffset, NULL, NULL},
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// Interrupt Array
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{L"SMMU_NSgIrpt", 4, 60, L"0x%x", NULL, NULL, NULL, NULL},
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{L"SMMU_NSgIrpt interrupt flags", 4, 64, L"0x%x", NULL, NULL, NULL, NULL},
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{L"SMMU_NSgCfgIrpt", 4, 68, L"0x%x", NULL, NULL, NULL, NULL},
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{L"SMMU_NSgCfgIrpt interrupt flags", 4, 72, L"0x%x", NULL, NULL, NULL, NULL}
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};
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/**
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An ACPI_PARSER array describing the SMMUv1/2 Node Interrupt Array.
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**/
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STATIC CONST ACPI_PARSER InterruptArrayParser[] = {
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{L"Interrupt GSIV", 4, 0, L"0x%x", NULL, NULL, NULL, NULL},
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{L"Flags", 4, 4, L"0x%x", NULL, NULL, NULL, NULL}
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};
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/**
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An ACPI_PARSER array describing the IORT ID Mapping.
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**/
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STATIC CONST ACPI_PARSER IortNodeIdMappingParser[] = {
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{L"Input base", 4, 0, L"0x%x", NULL, NULL, NULL, NULL},
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{L"Number of IDs", 4, 4, L"0x%x", NULL, NULL, NULL, NULL},
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{L"Output base", 4, 8, L"0x%x", NULL, NULL, NULL, NULL},
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{L"Output reference", 4, 12, L"0x%x", NULL, NULL, NULL, NULL},
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{L"Flags", 4, 16, L"0x%x", NULL, NULL, NULL, NULL}
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};
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/**
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An ACPI_PARSER array describing the IORT SMMUv3 node.
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**/
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STATIC CONST ACPI_PARSER IortNodeSmmuV3Parser[] = {
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PARSE_IORT_NODE_HEADER (NULL, NULL),
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{L"Base Address", 8, 16, L"0x%lx", NULL, NULL, NULL, NULL},
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{L"Flags", 4, 24, L"0x%x", NULL, NULL, NULL, NULL},
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{L"Reserved", 4, 28, L"0x%x", NULL, NULL, NULL, NULL},
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{L"VATOS Address", 8, 32, L"0x%lx", NULL, NULL, NULL, NULL},
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{L"Model", 4, 40, L"%d", NULL, NULL, NULL, NULL},
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{L"Event", 4, 44, L"0x%x", NULL, NULL, NULL, NULL},
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{L"PRI", 4, 48, L"0x%x", NULL, NULL, NULL, NULL},
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{L"GERR", 4, 52, L"0x%x", NULL, NULL, NULL, NULL},
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{L"Sync", 4, 56, L"0x%x", NULL, NULL, NULL, NULL}
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};
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/**
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An ACPI_PARSER array describing the IORT ITS node.
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**/
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STATIC CONST ACPI_PARSER IortNodeItsParser[] = {
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PARSE_IORT_NODE_HEADER (
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ValidateItsIdMappingCount,
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ValidateItsIdArrayReference
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),
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{L"Number of ITSs", 4, 16, L"%d", NULL, (VOID**)&ItsCount, NULL}
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};
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/**
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An ACPI_PARSER array describing the ITS ID.
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**/
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STATIC CONST ACPI_PARSER ItsIdParser[] = {
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{ L"GIC ITS Identifier", 4, 0, L"%d", NULL, NULL, NULL }
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};
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/**
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An ACPI_PARSER array describing the IORT Names Component node.
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**/
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STATIC CONST ACPI_PARSER IortNodeNamedComponentParser[] = {
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PARSE_IORT_NODE_HEADER (NULL, NULL),
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{L"Node Flags", 4, 16, L"%d", NULL, NULL, NULL, NULL},
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{L"Memory access properties", 8, 20, L"0x%lx", NULL, NULL, NULL, NULL},
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{L"Device memory address size limit", 1, 28, L"%d", NULL, NULL, NULL, NULL}
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};
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/**
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An ACPI_PARSER array describing the IORT Root Complex node.
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**/
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STATIC CONST ACPI_PARSER IortNodeRootComplexParser[] = {
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PARSE_IORT_NODE_HEADER (NULL, NULL),
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{L"Memory access properties", 8, 16, L"0x%lx", NULL, NULL, NULL, NULL},
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{L"ATS Attribute", 4, 24, L"0x%x", NULL, NULL, NULL, NULL},
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{L"PCI Segment number", 4, 28, L"0x%x", NULL, NULL, NULL, NULL}
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};
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/**
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An ACPI_PARSER array describing the IORT PMCG node.
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**/
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STATIC CONST ACPI_PARSER IortNodePmcgParser[] = {
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PARSE_IORT_NODE_HEADER (ValidatePmcgIdMappingCount, NULL),
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{L"Base Address", 8, 16, L"0x%lx", NULL, NULL, NULL, NULL},
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{L"Overflow interrupt GSIV", 4, 24, L"0x%x", NULL, NULL, NULL, NULL},
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{L"Node reference", 4, 28, L"0x%x", NULL, NULL, NULL, NULL},
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};
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/**
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This function parses the IORT Node Id Mapping array.
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@param [in] Ptr Pointer to the start of the ID mapping array.
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@param [in] Length Length of the buffer.
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@param [in] MappingCount The ID Mapping count.
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**/
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STATIC
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VOID
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DumpIortNodeIdMappings (
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IN UINT8* Ptr,
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IN UINT32 Length,
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IN UINT32 MappingCount
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)
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{
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UINT32 Index;
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UINT32 Offset;
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CHAR8 Buffer[40]; // Used for AsciiName param of ParseAcpi
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Index = 0;
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Offset = 0;
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while ((Index < MappingCount) &&
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(Offset < Length)) {
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AsciiSPrint (
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Buffer,
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sizeof (Buffer),
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"ID Mapping [%d]",
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Index
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);
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Offset += ParseAcpi (
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TRUE,
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4,
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Buffer,
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Ptr + Offset,
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Length - Offset,
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PARSER_PARAMS (IortNodeIdMappingParser)
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);
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Index++;
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}
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}
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/**
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This function parses the IORT SMMUv1/2 node.
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@param [in] Ptr Pointer to the start of the buffer.
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@param [in] Length Length of the buffer.
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@param [in] MappingCount The ID Mapping count.
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@param [in] MappingOffset The offset of the ID Mapping array
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from the start of the IORT table.
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**/
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STATIC
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VOID
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DumpIortNodeSmmuV1V2 (
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IN UINT8* Ptr,
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IN UINT16 Length,
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IN UINT32 MappingCount,
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IN UINT32 MappingOffset
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)
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{
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UINT32 Index;
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UINT32 Offset;
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CHAR8 Buffer[50]; // Used for AsciiName param of ParseAcpi
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ParseAcpi (
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TRUE,
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2,
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"SMMUv1 or SMMUv2 Node",
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Ptr,
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Length,
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PARSER_PARAMS (IortNodeSmmuV1V2Parser)
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);
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Offset = *InterruptContextOffset;
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Index = 0;
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while ((Index < *InterruptContextCount) &&
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(Offset < Length)) {
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AsciiSPrint (
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Buffer,
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sizeof (Buffer),
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"Context Interrupts Array [%d]",
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Index
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);
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Offset += ParseAcpi (
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TRUE,
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4,
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Buffer,
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Ptr + Offset,
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Length - Offset,
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PARSER_PARAMS (InterruptArrayParser)
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);
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Index++;
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}
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Offset = *PmuInterruptOffset;
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Index = 0;
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while ((Index < *PmuInterruptCount) &&
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(Offset < Length)) {
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AsciiSPrint (
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Buffer,
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sizeof (Buffer),
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"PMU Interrupts Array [%d]",
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Index
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);
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Offset += ParseAcpi (
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TRUE,
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4,
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Buffer,
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Ptr + Offset,
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Length - Offset,
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PARSER_PARAMS (InterruptArrayParser)
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);
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Index++;
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}
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DumpIortNodeIdMappings (
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Ptr + MappingOffset,
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Length - MappingOffset,
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MappingCount
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);
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}
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/**
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This function parses the IORT SMMUv3 node.
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@param [in] Ptr Pointer to the start of the buffer.
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@param [in] Length Length of the buffer.
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@param [in] MappingCount The ID Mapping count.
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@param [in] MappingOffset The offset of the ID Mapping array
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from the start of the IORT table.
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**/
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STATIC
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VOID
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DumpIortNodeSmmuV3 (
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IN UINT8* Ptr,
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IN UINT16 Length,
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IN UINT32 MappingCount,
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IN UINT32 MappingOffset
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)
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{
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ParseAcpi (
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TRUE,
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2,
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"SMMUV3 Node",
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Ptr,
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Length,
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PARSER_PARAMS (IortNodeSmmuV3Parser)
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);
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DumpIortNodeIdMappings (
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Ptr + MappingOffset,
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Length - MappingOffset,
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MappingCount
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);
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}
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/**
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This function parses the IORT ITS node.
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@param [in] Ptr Pointer to the start of the buffer.
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@param [in] Length Length of the buffer.
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**/
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STATIC
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VOID
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DumpIortNodeIts (
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IN UINT8* Ptr,
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IN UINT16 Length
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)
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{
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UINT32 Offset;
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UINT32 Index;
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CHAR8 Buffer[80]; // Used for AsciiName param of ParseAcpi
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Offset = ParseAcpi (
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TRUE,
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2,
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"ITS Node",
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Ptr,
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Length,
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PARSER_PARAMS (IortNodeItsParser)
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);
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Index = 0;
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while ((Index < *ItsCount) &&
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(Offset < Length)) {
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AsciiSPrint (
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Buffer,
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sizeof (Buffer),
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"GIC ITS Identifier Array [%d]",
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Index
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);
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Offset += ParseAcpi (
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TRUE,
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4,
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Buffer,
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Ptr + Offset,
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Length - Offset,
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PARSER_PARAMS (ItsIdParser)
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);
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Index++;
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}
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// Note: ITS does not have the ID Mappings Array
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}
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/**
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This function parses the IORT Named Component node.
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|
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@param [in] Ptr Pointer to the start of the buffer.
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@param [in] Length Length of the buffer.
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@param [in] MappingCount The ID Mapping count.
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@param [in] MappingOffset The offset of the ID Mapping array
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from the start of the IORT table.
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**/
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STATIC
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VOID
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DumpIortNodeNamedComponent (
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IN UINT8* Ptr,
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IN UINT16 Length,
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IN UINT32 MappingCount,
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IN UINT32 MappingOffset
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)
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{
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UINT32 Offset;
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UINT32 Index;
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Offset = ParseAcpi (
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TRUE,
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2,
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"Named Component Node",
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Ptr,
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Length,
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PARSER_PARAMS (IortNodeNamedComponentParser)
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);
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// Estimate the Device Name length
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PrintFieldName (2, L"Device Object Name");
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Index = 0;
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while ((*(Ptr + Offset) != 0) &&
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(Offset < Length)) {
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Print (L"%c", *(Ptr + Offset));
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Offset++;
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}
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Print (L"\n");
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DumpIortNodeIdMappings (
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Ptr + MappingOffset,
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Length - MappingOffset,
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MappingCount
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);
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}
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/**
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This function parses the IORT Root Complex node.
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|
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@param [in] Ptr Pointer to the start of the buffer.
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@param [in] Length Length of the buffer.
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@param [in] MappingCount The ID Mapping count.
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@param [in] MappingOffset The offset of the ID Mapping array
|
|
from the start of the IORT table.
|
|
**/
|
|
STATIC
|
|
VOID
|
|
DumpIortNodeRootComplex (
|
|
IN UINT8* Ptr,
|
|
IN UINT16 Length,
|
|
IN UINT32 MappingCount,
|
|
IN UINT32 MappingOffset
|
|
)
|
|
{
|
|
ParseAcpi (
|
|
TRUE,
|
|
2,
|
|
"Root Complex Node",
|
|
Ptr,
|
|
Length,
|
|
PARSER_PARAMS (IortNodeRootComplexParser)
|
|
);
|
|
|
|
DumpIortNodeIdMappings (
|
|
Ptr + MappingOffset,
|
|
Length - MappingOffset,
|
|
MappingCount
|
|
);
|
|
}
|
|
|
|
/**
|
|
This function parses the IORT PMCG node.
|
|
|
|
@param [in] Ptr Pointer to the start of the buffer.
|
|
@param [in] Length Length of the buffer.
|
|
@param [in] MappingCount The ID Mapping count.
|
|
@param [in] MappingOffset The offset of the ID Mapping array
|
|
from the start of the IORT table.
|
|
**/
|
|
STATIC
|
|
VOID
|
|
DumpIortNodePmcg (
|
|
IN UINT8* Ptr,
|
|
IN UINT16 Length,
|
|
IN UINT32 MappingCount,
|
|
IN UINT32 MappingOffset
|
|
)
|
|
{
|
|
ParseAcpi (
|
|
TRUE,
|
|
2,
|
|
"PMCG Node",
|
|
Ptr,
|
|
Length,
|
|
PARSER_PARAMS (IortNodePmcgParser)
|
|
);
|
|
|
|
DumpIortNodeIdMappings (
|
|
Ptr + MappingOffset,
|
|
Length - MappingOffset,
|
|
MappingCount
|
|
);
|
|
}
|
|
|
|
/**
|
|
This function parses the ACPI IORT table.
|
|
When trace is enabled this function parses the IORT table and traces the ACPI fields.
|
|
|
|
This function also parses the following nodes:
|
|
- ITS Group
|
|
- Named Component
|
|
- Root Complex
|
|
- SMMUv1/2
|
|
- SMMUv3
|
|
- PMCG
|
|
|
|
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
|
|
ParseAcpiIort (
|
|
IN BOOLEAN Trace,
|
|
IN UINT8* Ptr,
|
|
IN UINT32 AcpiTableLength,
|
|
IN UINT8 AcpiTableRevision
|
|
)
|
|
{
|
|
UINT32 Offset;
|
|
UINT32 Index;
|
|
UINT8* NodePtr;
|
|
|
|
if (!Trace) {
|
|
return;
|
|
}
|
|
|
|
ParseAcpi (
|
|
TRUE,
|
|
0,
|
|
"IORT",
|
|
Ptr,
|
|
AcpiTableLength,
|
|
PARSER_PARAMS (IortParser)
|
|
);
|
|
|
|
Offset = *IortNodeOffset;
|
|
NodePtr = Ptr + Offset;
|
|
Index = 0;
|
|
|
|
// Parse the specified number of IORT nodes or the IORT table buffer length.
|
|
// Whichever is minimum.
|
|
while ((Index++ < *IortNodeCount) &&
|
|
(Offset < AcpiTableLength)) {
|
|
// Parse the IORT Node Header
|
|
ParseAcpi (
|
|
FALSE,
|
|
0,
|
|
"IORT Node Header",
|
|
NodePtr,
|
|
AcpiTableLength - Offset,
|
|
PARSER_PARAMS (IortNodeHeaderParser)
|
|
);
|
|
|
|
// Make sure the IORT Node is inside the table
|
|
if ((Offset + (*IortNodeLength)) > AcpiTableLength) {
|
|
IncrementErrorCount ();
|
|
Print (
|
|
L"ERROR: Invalid IORT node length. IortNodeLength = %d. " \
|
|
L"RemainingTableBufferLength = %d. IORT parsing aborted.\n",
|
|
*IortNodeLength,
|
|
AcpiTableLength - Offset
|
|
);
|
|
return;
|
|
}
|
|
|
|
PrintFieldName (2, L"* Node Offset *");
|
|
Print (L"0x%x\n", Offset);
|
|
|
|
switch (*IortNodeType) {
|
|
case EFI_ACPI_IORT_TYPE_ITS_GROUP:
|
|
DumpIortNodeIts (
|
|
NodePtr,
|
|
*IortNodeLength
|
|
);
|
|
break;
|
|
case EFI_ACPI_IORT_TYPE_NAMED_COMP:
|
|
DumpIortNodeNamedComponent (
|
|
NodePtr,
|
|
*IortNodeLength,
|
|
*IortIdMappingCount,
|
|
*IortIdMappingOffset
|
|
);
|
|
break;
|
|
case EFI_ACPI_IORT_TYPE_ROOT_COMPLEX:
|
|
DumpIortNodeRootComplex (
|
|
NodePtr,
|
|
*IortNodeLength,
|
|
*IortIdMappingCount,
|
|
*IortIdMappingOffset
|
|
);
|
|
break;
|
|
case EFI_ACPI_IORT_TYPE_SMMUv1v2:
|
|
DumpIortNodeSmmuV1V2 (
|
|
NodePtr,
|
|
*IortNodeLength,
|
|
*IortIdMappingCount,
|
|
*IortIdMappingOffset
|
|
);
|
|
break;
|
|
case EFI_ACPI_IORT_TYPE_SMMUv3:
|
|
DumpIortNodeSmmuV3 (
|
|
NodePtr,
|
|
*IortNodeLength,
|
|
*IortIdMappingCount,
|
|
*IortIdMappingOffset
|
|
);
|
|
break;
|
|
case EFI_ACPI_IORT_TYPE_PMCG:
|
|
DumpIortNodePmcg (
|
|
NodePtr,
|
|
*IortNodeLength,
|
|
*IortIdMappingCount,
|
|
*IortIdMappingOffset
|
|
);
|
|
break;
|
|
|
|
default:
|
|
IncrementErrorCount ();
|
|
Print (L"ERROR: Unsupported IORT Node type = %d\n", *IortNodeType);
|
|
} // switch
|
|
|
|
NodePtr += (*IortNodeLength);
|
|
Offset += (*IortNodeLength);
|
|
} // while
|
|
}
|