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9e865f9579
As of now, the print-formatter implemented by the FNPTR_PRINT_FORMATTER function pointer takes two parameters, the format string and the pointer to the field. For cases where the print-formatter has to have access to the length of the field, there is no clean way to currently do it. In order to resolve this, update the print-formatter's prototype to take the length of the field as a third parameter. This change should improve the overall robustness and flexibility of AcpiView. Signed-off-by: Rohit Mathew <Rohit.Mathew@arm.com> Cc: James Morse <james.Morse@arm.com> Cc: Sami Mujawar <sami.mujawar@arm.com> Cc: Thomas Abraham <thomas.abraham@arm.com> Cc: Zhichao Gao <zhichao.gao@intel.com> Reviewed-by: Sami Mujawar <sami.mujawar@arm.com>
289 lines
7.6 KiB
C
289 lines
7.6 KiB
C
/** @file
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ERST table parser
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Copyright (c) 2022, NVIDIA CORPORATION. All rights reserved.
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Copyright (c) 2016 - 2024, 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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- ACPI 6.5 Specification - August 2022
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**/
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#include <IndustryStandard/Acpi.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 UINT32 *InstructionEntryCount;
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/**
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An array of strings describing the Erst actions
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**/
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STATIC CONST CHAR16 *ErstActionTable[] = {
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L"BEGIN_WRITE_OPERATION",
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L"BEGIN_READ_OPERATION",
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L"BEGIN_CLEAR_OPERATION",
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L"END_OPERATION",
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L"SET_RECORD_OFFSET",
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L"EXECUTE_OPERATION",
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L"CHECK_BUSY_STATUS",
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L"GET_COMMAND_STATUS",
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L"GET_RECORD_IDENTIFIER",
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L"SET_RECORD_IDENTIFIER",
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L"GET_RECORD_COUNT",
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L"BEGIN_DUMMY_WRITE_OPERATION",
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L"RESERVED",
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L"GET_ERROR_LOG_ADDRESS_RANGE",
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L"GET_ERROR_LOG_ADDRESS_RANGE_LENGTH",
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L"GET_ERROR_LOG_ADDRESS_RANGE_ATTRIBUTES",
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L"GET_EXECUTE_OPERATION_TIMINGS"
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};
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/**
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An array of strings describing the Erst instructions
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**/
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STATIC CONST CHAR16 *ErstInstructionTable[] = {
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L"READ_REGISTER",
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L"READ_REGISTER_VALUE",
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L"WRITE_REGISTER",
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L"WRITE_REGISTER_VALUE",
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L"NOOP",
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L"LOAD_VAR1",
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L"LOAD_VAR2",
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L"STORE_VAR1",
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L"ADD",
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L"SUBTRACT",
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L"ADD_VALUE",
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L"SUBTRACT_VALUE",
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L"STALL",
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L"STALL_WHILE_TRUE",
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L"SKIP_NEXT_INSTRUCTION_IF_TRUE",
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L"GOTO",
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L"SET_SRC_ADDRESS_BASE",
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L"SET_DST_ADDRESS_BASE",
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L"MOVE_DATA"
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};
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/**
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Validate Erst action.
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@param [in] Ptr Pointer to the start of the field data.
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@param [in] Length Length of the field.
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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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ValidateErstAction (
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IN UINT8 *Ptr,
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IN UINT32 Length,
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IN VOID *Context
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)
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{
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if (*Ptr > EFI_ACPI_6_4_ERST_GET_EXECUTE_OPERATION_TIMINGS) {
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IncrementErrorCount ();
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Print (L"\nError: 0x%02x is not a valid action encoding", *Ptr);
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}
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}
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/**
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Validate Erst instruction.
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@param [in] Ptr Pointer to the start of the field data.
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@param [in] Length Length of the field.
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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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ValidateErstInstruction (
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IN UINT8 *Ptr,
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IN UINT32 Length,
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IN VOID *Context
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)
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{
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if (*Ptr > EFI_ACPI_6_4_ERST_MOVE_DATA) {
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IncrementErrorCount ();
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Print (L"\nError: 0x%02x is not a valid instruction encoding", *Ptr);
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}
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}
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/**
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Validate Erst flags.
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@param [in] Ptr Pointer to the start of the field data.
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@param [in] Length Length of the field.
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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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ValidateErstFlags (
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IN UINT8 *Ptr,
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IN UINT32 Length,
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IN VOID *Context
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)
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{
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if ((*Ptr & 0xfe) != 0) {
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IncrementErrorCount ();
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Print (L"\nError: Reserved Flag bits not set to 0");
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}
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}
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/**
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Looks up and prints the string corresponding to the index.
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@param [in] Table Lookup table.
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@param [in] Index Entry to print.
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@param [in] NumEntries Number of valid entries in the table.
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**/
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STATIC
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VOID
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EFIAPI
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FormatByte (
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IN CONST CHAR16 *Table[],
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IN UINT8 Index,
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IN UINT8 NumEntries
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)
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{
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CONST CHAR16 *String;
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if (Index < NumEntries) {
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String = Table[Index];
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} else {
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String = L"**INVALID**";
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}
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Print (
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L"0x%02x (%s)",
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Index,
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String
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);
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}
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/**
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Prints the Erst Action.
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@param [in] Format Optional format string for tracing the data.
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@param [in] Ptr Pointer to the Action byte.
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@param [in] Length Length of the field.
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**/
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STATIC
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VOID
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EFIAPI
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DumpErstAction (
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IN CONST CHAR16 *Format OPTIONAL,
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IN UINT8 *Ptr,
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IN UINT32 Length
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)
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{
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FormatByte (ErstActionTable, *Ptr, ARRAY_SIZE (ErstActionTable));
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}
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/**
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Prints the Erst Instruction.
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@param [in] Format Optional format string for tracing the data.
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@param [in] Ptr Pointer to the Instruction byte.
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@param [in] Length Length of the field.
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**/
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STATIC
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VOID
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EFIAPI
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DumpErstInstruction (
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IN CONST CHAR16 *Format OPTIONAL,
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IN UINT8 *Ptr,
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IN UINT32 Length
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)
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{
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FormatByte (ErstInstructionTable, *Ptr, ARRAY_SIZE (ErstInstructionTable));
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}
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/**
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An ACPI_PARSER array describing the ACPI ERST Table.
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**/
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STATIC CONST ACPI_PARSER ErstParser[] = {
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PARSE_ACPI_HEADER (&AcpiHdrInfo),
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{ L"Serialization Header Size", 4, 36, L"0x%x", NULL, NULL, NULL, NULL },
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{ L"Reserved", 4, 40, L"0x%x", NULL, NULL, NULL, NULL },
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{ L"Instruction Entry Count", 4, 44, L"0x%x", NULL, (VOID **)&InstructionEntryCount, NULL, NULL }
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};
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/**
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An ACPI_PARSER array describing the Serialization Instruction Entry structure.
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**/
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STATIC CONST ACPI_PARSER SerializationInstructionEntryParser[] = {
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{ L"Serialization Action", 1, 0, L"0x%x", DumpErstAction, NULL, ValidateErstAction, NULL },
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{ L"Instruction", 1, 1, L"0x%x", DumpErstInstruction, NULL, ValidateErstInstruction, NULL },
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{ L"Flags", 1, 2, L"0x%x", NULL, NULL, ValidateErstFlags, NULL },
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{ L"Reserved", 1, 3, L"0x%x", NULL, NULL, NULL, NULL },
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{ L"Register Region", 12, 4, NULL, DumpGas, NULL, NULL, NULL },
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{ L"Value", 8, 16, L"0x%llx", NULL, NULL, NULL, NULL },
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{ L"Mask", 8, 24, L"0x%llx", NULL, NULL, NULL, NULL }
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};
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/**
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This function parses the ACPI ERST table.
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When trace is enabled this function parses the ERST table and
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traces the ACPI table fields.
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This function also performs validation of the ACPI table fields.
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@param [in] Trace If TRUE, trace the ACPI fields.
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@param [in] Ptr Pointer to the start of the buffer.
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@param [in] AcpiTableLength Length of the ACPI table.
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@param [in] AcpiTableRevision Revision of the ACPI table.
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**/
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VOID
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EFIAPI
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ParseAcpiErst (
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IN BOOLEAN Trace,
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IN UINT8 *Ptr,
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IN UINT32 AcpiTableLength,
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IN UINT8 AcpiTableRevision
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)
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{
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UINT32 Offset;
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if (!Trace) {
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return;
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}
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Offset = ParseAcpi (
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Trace,
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0,
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"ERST",
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Ptr,
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AcpiTableLength,
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PARSER_PARAMS (ErstParser)
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);
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if (sizeof (EFI_ACPI_6_4_ERST_SERIALIZATION_INSTRUCTION_ENTRY)*(*InstructionEntryCount) != (AcpiTableLength - Offset)) {
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IncrementErrorCount ();
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Print (
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L"ERROR: Invalid InstructionEntryCount. " \
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L"Count = %d. Offset = %d. AcpiTableLength = %d.\n",
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*InstructionEntryCount,
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Offset,
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AcpiTableLength
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);
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return;
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}
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while (Offset < AcpiTableLength) {
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Offset += ParseAcpi (
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Trace,
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2,
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"Serialization Action",
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Ptr + Offset,
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(AcpiTableLength - Offset),
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PARSER_PARAMS (SerializationInstructionEntryParser)
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);
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}
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}
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