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audk/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Fadt/FadtParser.c
Krzysztof Koch 86da432af3 ShellPkg: acpiview: FADT: Remove redundant forward declarations 
Remove redundant forward function declarations by repositioning
blocks of code. This way the code structure is consistent across
ACPI table parsers and the code becomes more concise.

Signed-off-by: Krzysztof Koch <krzysztof.koch@arm.com>
Reviewed-by: Jaben Carsey <jaben.carsey@intel.com>
Reviewed-by: Sami Mujawar <sami.mujawar@arm.com>
Reviewed-by: Alexei Fedorov <Alexei.Fedorov@arm.com>
Reviewed-by: Zhichao Gao <zhichao.gao@intel.com>
2019-07-19 08:32:43 -07:00

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/** @file
FADT table parser
Copyright (c) 2016 - 2019, ARM Limited. All rights reserved.
SPDX-License-Identifier: BSD-2-Clause-Patent
@par Reference(s):
- ACPI 6.2 Specification - Errata A, September 2017
**/
#include <IndustryStandard/Acpi.h>
#include <Library/UefiLib.h>
#include "AcpiParser.h"
#include "AcpiTableParser.h"
// Local variables
STATIC CONST UINT32* DsdtAddress;
STATIC CONST UINT64* X_DsdtAddress;
STATIC CONST UINT8* FadtMinorRevision;
STATIC ACPI_DESCRIPTION_HEADER_INFO AcpiHdrInfo;
/**
A macro defining the Hardware reduced ACPI flag
**/
#define HW_REDUCED_ACPI BIT20
/**
Get the ACPI XSDT header info.
**/
CONST ACPI_DESCRIPTION_HEADER_INFO *
EFIAPI
GetAcpiXsdtHeaderInfo (
VOID
);
/**
This function validates the Firmware Control Field.
@param [in] Ptr Pointer to the start of the field data.
@param [in] Context Pointer to context specific information e.g. this
could be a pointer to the ACPI table header.
**/
STATIC
VOID
EFIAPI
ValidateFirmwareCtrl (
IN UINT8* Ptr,
IN VOID* Context
)
{
#if defined (MDE_CPU_ARM) || defined (MDE_CPU_AARCH64)
if (*(UINT32*)Ptr != 0) {
IncrementErrorCount ();
Print (
L"\nERROR: Firmware Control must be zero for ARM platforms."
);
}
#endif
}
/**
This function validates the X_Firmware Control Field.
@param [in] Ptr Pointer to the start of the field data.
@param [in] Context Pointer to context specific information e.g. this
could be a pointer to the ACPI table header.
**/
STATIC
VOID
EFIAPI
ValidateXFirmwareCtrl (
IN UINT8* Ptr,
IN VOID* Context
)
{
#if defined (MDE_CPU_ARM) || defined (MDE_CPU_AARCH64)
if (*(UINT64*)Ptr != 0) {
IncrementErrorCount ();
Print (
L"\nERROR: X Firmware Control must be zero for ARM platforms."
);
}
#endif
}
/**
This function validates the flags.
@param [in] Ptr Pointer to the start of the field data.
@param [in] Context Pointer to context specific information e.g. this
could be a pointer to the ACPI table header.
**/
STATIC
VOID
EFIAPI
ValidateFlags (
IN UINT8* Ptr,
IN VOID* Context
)
{
#if defined (MDE_CPU_ARM) || defined (MDE_CPU_AARCH64)
if (((*(UINT32*)Ptr) & HW_REDUCED_ACPI) == 0) {
IncrementErrorCount ();
Print (
L"\nERROR: HW_REDUCED_ACPI flag must be set for ARM platforms."
);
}
#endif
}
/**
An ACPI_PARSER array describing the ACPI FADT Table.
**/
STATIC CONST ACPI_PARSER FadtParser[] = {
PARSE_ACPI_HEADER (&AcpiHdrInfo),
{L"FIRMWARE_CTRL", 4, 36, L"0x%x", NULL, NULL, 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},
{L"SCI_INT", 2, 46, L"0x%x", NULL, NULL, NULL, NULL},
{L"SMI_CMD", 4, 48, L"0x%x", NULL, NULL, NULL, NULL},
{L"ACPI_ENABLE", 1, 52, L"0x%x", NULL, NULL, NULL, NULL},
{L"ACPI_DISABLE", 1, 53, L"0x%x", NULL, NULL, NULL, NULL},
{L"S4BIOS_REQ", 1, 54, L"0x%x", NULL, NULL, NULL, NULL},
{L"PSTATE_CNT", 1, 55, L"0x%x", NULL, NULL, NULL, NULL},
{L"PM1a_EVT_BLK", 4, 56, L"0x%x", NULL, NULL, NULL, NULL},
{L"PM1b_EVT_BLK", 4, 60, L"0x%x", NULL, NULL, NULL, NULL},
{L"PM1a_CNT_BLK", 4, 64, L"0x%x", NULL, NULL, NULL, NULL},
{L"PM1b_CNT_BLK", 4, 68, L"0x%x", NULL, NULL, NULL, NULL},
{L"PM2_CNT_BLK", 4, 72, L"0x%x", NULL, NULL, NULL, NULL},
{L"PM_TMR_BLK", 4, 76, L"0x%x", NULL, NULL, NULL, NULL},
{L"GPE0_BLK", 4, 80, L"0x%x", NULL, NULL, NULL, NULL},
{L"GPE1_BLK", 4, 84, L"0x%x", NULL, NULL, NULL, NULL},
{L"PM1_EVT_LEN", 1, 88, L"0x%x", NULL, NULL, NULL, NULL},
{L"PM1_CNT_LEN", 1, 89, L"0x%x", NULL, NULL, NULL, NULL},
{L"PM2_CNT_LEN", 1, 90, L"0x%x", NULL, NULL, NULL, NULL},
{L"PM_TMR_LEN", 1, 91, L"0x%x", NULL, NULL, NULL, NULL},
{L"GPE0_BLK_LEN", 1, 92, L"0x%x", NULL, NULL, NULL, NULL},
{L"GPE1_BLK_LEN", 1, 93, L"0x%x", NULL, NULL, NULL, NULL},
{L"GPE1_BASE", 1, 94, L"0x%x", NULL, NULL, NULL, NULL},
{L"CST_CNT", 1, 95, L"0x%x", NULL, NULL, NULL, NULL},
{L"P_LVL2_LAT", 2, 96, L"0x%x", NULL, NULL, NULL, NULL},
{L"P_LVL3_LAT", 2, 98, L"0x%x", NULL, NULL, NULL, NULL},
{L"FLUSH_SIZE", 2, 100, L"0x%x", NULL, NULL, NULL, NULL},
{L"FLUSH_STRIDE", 2, 102, L"0x%x", NULL, NULL, NULL, NULL},
{L"DUTY_OFFSET", 1, 104, L"0x%x", NULL, NULL, NULL, NULL},
{L"DUTY_WIDTH", 1, 105, L"0x%x", NULL, NULL, NULL, NULL},
{L"DAY_ALRM", 1, 106, L"0x%x", NULL, NULL, NULL, NULL},
{L"MON_ALRM", 1, 107, L"0x%x", NULL, NULL, NULL, NULL},
{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"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,
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},
{L"X_PM1b_EVT_BLK", 12, 160, NULL, DumpGas, NULL, NULL, NULL},
{L"X_PM1a_CNT_BLK", 12, 172, NULL, DumpGas, NULL, NULL, NULL},
{L"X_PM1b_CNT_BLK", 12, 184, NULL, DumpGas, NULL, NULL, NULL},
{L"X_PM2_CNT_BLK", 12, 196, NULL, DumpGas, NULL, NULL, NULL},
{L"X_PM_TMR_BLK", 12, 208, NULL, DumpGas, NULL, NULL, NULL},
{L"X_GPE0_BLK", 12, 220, NULL, DumpGas, NULL, NULL, NULL},
{L"X_GPE1_BLK", 12, 232, NULL, DumpGas, NULL, NULL, NULL},
{L"SLEEP_CONTROL_REG", 12, 244, NULL, DumpGas, NULL, NULL, NULL},
{L"SLEEP_STATUS_REG", 12, 256, NULL, DumpGas, NULL, NULL, NULL},
{L"Hypervisor VendorIdentity", 8, 268, L"%lx", NULL, NULL, NULL, NULL}
};
/**
This function parses the ACPI FADT table.
This function parses the FADT table and optionally 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
ParseAcpiFadt (
IN BOOLEAN Trace,
IN UINT8* Ptr,
IN UINT32 AcpiTableLength,
IN UINT8 AcpiTableRevision
)
{
UINT8* DsdtPtr;
ParseAcpi (
Trace,
0,
"FADT",
Ptr,
AcpiTableLength,
PARSER_PARAMS (FadtParser)
);
if (Trace) {
Print (L"\nSummary:\n");
PrintFieldName (2, L"FADT Version");
Print (L"%d.%d\n", *AcpiHdrInfo.Revision, *FadtMinorRevision);
if (*GetAcpiXsdtHeaderInfo ()->OemTableId != *AcpiHdrInfo.OemTableId) {
IncrementErrorCount ();
Print (L"ERROR: OEM Table Id does not match with RSDT/XSDT.\n");
}
}
// If X_DSDT is not zero then use X_DSDT and ignore DSDT,
// else use DSDT.
if (*X_DsdtAddress != 0) {
DsdtPtr = (UINT8*)(UINTN)(*X_DsdtAddress);
} else if (*DsdtAddress != 0) {
DsdtPtr = (UINT8*)(UINTN)(*DsdtAddress);
} else {
// Both DSDT and X_DSDT cannot be zero.
#if defined (MDE_CPU_ARM) || defined (MDE_CPU_AARCH64)
if (Trace) {
// The DSDT Table is mandatory for ARM systems
// as the CPU information MUST be presented in
// the DSDT.
IncrementErrorCount ();
Print (L"ERROR: Both X_DSDT and DSDT are NULL.\n");
}
#endif
return;
}
ProcessAcpiTable (DsdtPtr);
}
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