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Add support for parsing the ACPI FACS table. The FADT parser has also been updated as it links the FACS table using the FIRMWARE_CTRL or X_FIRMWARE_CTRL fields. Since the FACS table does not follow the standard ACPI header, the FADT parser extracts the FACS signature, length and version fields before invoking the FACS parser. Cc: Ray Ni <ray.ni@intel.com> Cc: Zhichao Gao <zhichao.gao@intel.com> Reviewed-by: Zhichao Gao <zhichao.gao@intel.com> Signed-off-by: Sami Mujawar <sami.mujawar@arm.com>
72 lines
2.1 KiB
C
72 lines
2.1 KiB
C
/** @file
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FACS table parser
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Copyright (c) 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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- ACPI 6.3 Specification - January 2019
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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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/**
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An ACPI_PARSER array describing the ACPI FACS Table.
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**/
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STATIC CONST ACPI_PARSER FacsParser[] = {
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{L"Signature", 4, 0, L"%c%c%c%c", Dump4Chars, NULL, NULL, NULL},
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{L"Length", 4, 4, L"%d", NULL, NULL, NULL, NULL},
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{L"Hardware Signature", 4, 8, L"0x%x", NULL, NULL, NULL, NULL},
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{L"Firmware Waking Vector", 4, 12, L"0x%x", NULL, NULL, NULL, NULL},
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{L"Global Lock", 4, 16, L"0x%x", NULL, NULL, NULL, NULL},
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{L"Flags", 4, 20, L"0x%x", NULL, NULL, NULL, NULL},
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{L"X Firmware Walking Vector", 8, 24, L"0x%lx", NULL, NULL, NULL, NULL},
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{L"Version", 1, 32, L"%d", NULL, NULL, NULL, NULL},
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{L"Reserved", 3, 33, L"%x %x %x", Dump3Chars, NULL, NULL, NULL},
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{L"OSPM Flags", 4, 36, L"0x%x", NULL, NULL, NULL, NULL},
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{L"Reserved", 8, 40, L"%x %x %x %x %x %x %x %x", Dump8Chars, NULL, NULL,
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NULL},
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{L"Reserved", 8, 48, L"%x %x %x %x %x %x %x %x", Dump8Chars, NULL, NULL,
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NULL},
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{L"Reserved", 8, 56, L"%x %x %x %x %x %x %x %x", Dump8Chars, NULL, NULL,
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NULL}
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};
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/**
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This function parses the ACPI FACS table.
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When trace is enabled this function parses the FACS 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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ParseAcpiFacs (
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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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if (!Trace) {
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return;
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}
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ParseAcpi (
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Trace,
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0,
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"FACS",
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Ptr,
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AcpiTableLength,
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PARSER_PARAMS (FacsParser)
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);
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}
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