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ShellPkg: acpiview: Add support for parsing FACS

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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>
This commit is contained in:
Sami Mujawar
2019-11-22 19:31:45 +08:00
committed by mergify[bot]
parent c9416efeef
commit d5cf0fba20
5 changed files with 179 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

90
ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Fadt/FadtParser.c
View File

@ -5,17 +5,21 @@
SPDX-License-Identifier: BSD-2-Clause-Patent
@par Reference(s):
- ACPI 6.2 Specification - Errata A, September 2017
- ACPI 6.3 Specification - January 2019
**/
#include <IndustryStandard/Acpi.h>
#include <Library/UefiLib.h>
#include "AcpiParser.h"
#include "AcpiTableParser.h"
#include "AcpiView.h"
// Local variables
STATIC CONST UINT32* DsdtAddress;
STATIC CONST UINT64* X_DsdtAddress;
STATIC CONST UINT32* Flags;
STATIC CONST UINT32* FirmwareCtrl;
STATIC CONST UINT64* X_FirmwareCtrl;
STATIC CONST UINT8* FadtMinorRevision;
STATIC ACPI_DESCRIPTION_HEADER_INFO AcpiHdrInfo;
@ -24,6 +28,21 @@ STATIC ACPI_DESCRIPTION_HEADER_INFO AcpiHdrInfo;
**/
#define HW_REDUCED_ACPI BIT20
/**
Offset to the FACS signature from the start of the FACS.
**/
#define FACS_SIGNATURE_OFFSET 0
/**
Offset to the FACS revision from the start of the FACS.
**/
#define FACS_VERSION_OFFSET 32
/**
Offset to the FACS length from the start of the FACS.
**/
#define FACS_LENGTH_OFFSET 4
/**
Get the ACPI XSDT header info.
**/
@ -113,7 +132,8 @@ ValidateFlags (
**/
STATIC CONST ACPI_PARSER FadtParser[] = {
PARSE_ACPI_HEADER (&AcpiHdrInfo),
{L"FIRMWARE_CTRL", 4, 36, L"0x%x", NULL, NULL, ValidateFirmwareCtrl, NULL},
{L"FIRMWARE_CTRL", 4, 36, L"0x%x", NULL, (VOID**)&FirmwareCtrl,
ValidateFirmwareCtrl, NULL},
{L"DSDT", 4, 40, L"0x%x", NULL, (VOID**)&DsdtAddress, NULL, NULL},
{L"Reserved", 1, 44, L"%x", NULL, NULL, NULL, NULL},
{L"Preferred_PM_Profile", 1, 45, L"0x%x", NULL, NULL, NULL, NULL},
@ -150,13 +170,13 @@ STATIC CONST ACPI_PARSER FadtParser[] = {
{L"CENTURY", 1, 108, L"0x%x", NULL, NULL, NULL, NULL},
{L"IAPC_BOOT_ARCH", 2, 109, L"0x%x", NULL, NULL, NULL, NULL},
{L"Reserved", 1, 111, L"0x%x", NULL, NULL, NULL, NULL},
{L"Flags", 4, 112, L"0x%x", NULL, NULL, ValidateFlags, NULL},
{L"Flags", 4, 112, L"0x%x", NULL, (VOID**)&Flags, ValidateFlags, NULL},
{L"RESET_REG", 12, 116, NULL, DumpGas, NULL, NULL, NULL},
{L"RESET_VALUE", 1, 128, L"0x%x", NULL, NULL, NULL, NULL},
{L"ARM_BOOT_ARCH", 2, 129, L"0x%x", NULL, NULL, NULL, NULL},
{L"FADT Minor Version", 1, 131, L"0x%x", NULL, (VOID**)&FadtMinorRevision,
NULL, NULL},
{L"X_FIRMWARE_CTRL", 8, 132, L"0x%lx", NULL, NULL,
{L"X_FIRMWARE_CTRL", 8, 132, L"0x%lx", NULL, (VOID**)&X_FirmwareCtrl,
ValidateXFirmwareCtrl, NULL},
{L"X_DSDT", 8, 140, L"0x%lx", NULL, (VOID**)&X_DsdtAddress, NULL, NULL},
{L"X_PM1a_EVT_BLK", 12, 148, NULL, DumpGas, NULL, NULL, NULL},
@ -192,7 +212,13 @@ ParseAcpiFadt (
IN UINT8 AcpiTableRevision
)
{
UINT8* DsdtPtr;
EFI_STATUS Status;
UINT8* DsdtPtr;
UINT8* FirmwareCtrlPtr;
UINT32 FacsSignature;
UINT32 FacsLength;
UINT8 FacsRevision;
PARSE_ACPI_TABLE_PROC FacsParserProc;
ParseAcpi (
Trace,
@ -214,6 +240,60 @@ ParseAcpiFadt (
}
}
// If X_FIRMWARE_CTRL is not zero then use X_FIRMWARE_CTRL and ignore
// FIRMWARE_CTRL, else use FIRMWARE_CTRL.
if ((X_FirmwareCtrl != NULL) && (*X_FirmwareCtrl != 0)) {
FirmwareCtrlPtr = (UINT8*)(UINTN)(*X_FirmwareCtrl);
} else if ((FirmwareCtrl != NULL) && (*FirmwareCtrl != 0)) {
FirmwareCtrlPtr = (UINT8*)(UINTN)(*FirmwareCtrl);
} else {
FirmwareCtrlPtr = NULL;
// if HW_REDUCED_ACPI flag is not set, both FIRMWARE_CTRL and
// X_FIRMWARE_CTRL cannot be zero, and the FACS Table must be
// present.
if ((Trace) &&
(Flags != NULL) &&
((*Flags & EFI_ACPI_6_3_HW_REDUCED_ACPI) != 0)) {
IncrementErrorCount ();
Print (L"ERROR: No FACS table found, "
L"both X_FIRMWARE_CTRL and FIRMWARE_CTRL are zero.\n");
}
}
if (FirmwareCtrlPtr != NULL) {
// The FACS table does not have a standard ACPI table header. Therefore,
// the signature, length and version needs to be initially parsed.
// The FACS signature is 4 bytes starting at offset 0.
FacsSignature = *(UINT32*)(FirmwareCtrlPtr + FACS_SIGNATURE_OFFSET);
// The FACS length is 4 bytes starting at offset 4.
FacsLength = *(UINT32*)(FirmwareCtrlPtr + FACS_LENGTH_OFFSET);
// The FACS version is 1 byte starting at offset 32.
FacsRevision = *(UINT8*)(FirmwareCtrlPtr + FACS_VERSION_OFFSET);
Trace = ProcessTableReportOptions (
FacsSignature,
FirmwareCtrlPtr,
FacsLength
);
Status = GetParser (FacsSignature, &FacsParserProc);
if (EFI_ERROR (Status)) {
Print (
L"ERROR: No registered parser found for FACS.\n"
);
return;
}
FacsParserProc (
Trace,
FirmwareCtrlPtr,
FacsLength,
FacsRevision
);
}
// If X_DSDT is not zero then use X_DSDT and ignore DSDT,
// else use DSDT.
if (*X_DsdtAddress != 0) {