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/** @file
Arm Flattened Device Tree parser library for KvmTool.
Copyright (c) 2021, ARM Limited. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#include "FdtHwInfoParser.h"
#include "Arm/BootArch/ArmBootArchParser.h"
#include "Arm/GenericTimer/ArmGenericTimerParser.h"
#include "Arm/Gic/ArmGicDispatcher.h"
#include "Pci/ArmPciConfigSpaceParser.h"
#include "Serial/ArmSerialPortParser.h"
/** Ordered table of parsers/dispatchers.
A parser parses a Device Tree to populate a specific CmObj type. None,
one or many CmObj can be created by the parser.
The created CmObj are then handed to the parser's caller through the
HW_INFO_ADD_OBJECT interface.
This can also be a dispatcher. I.e. a function that not parsing a
Device Tree but calling other parsers.
*/
STATIC CONST FDT_HW_INFO_PARSER_FUNC HwInfoParserTable[] = {
ArmBootArchInfoParser,
ArmGenericTimerInfoParser,
ArmGicDispatcher,
ArmPciConfigInfoParser,
SerialPortDispatcher
};
/** Main dispatcher: sequentially call the parsers/dispatchers
of the HwInfoParserTable.
A parser parses a Device Tree to populate a specific CmObj type. None,
one or many CmObj can be created by the parser.
The created CmObj are then handed to the parser's caller through the
HW_INFO_ADD_OBJECT interface.
This can also be a dispatcher. I.e. a function that not parsing a
Device Tree but calling other parsers.
@param [in] FdtParserHandle A handle to the parser instance.
@param [in] FdtBranch When searching for DT node name, restrict
the search to this Device Tree branch.
@retval EFI_SUCCESS The function completed successfully.
@retval EFI_ABORTED An error occurred.
@retval EFI_INVALID_PARAMETER Invalid parameter.
@retval EFI_NOT_FOUND Not found.
@retval EFI_UNSUPPORTED Unsupported.
**/
EFI_STATUS
EFIAPI
ArchFdtHwInfoMainDispatcher (
IN CONST FDT_HW_INFO_PARSER_HANDLE FdtParserHandle,
IN INT32 FdtBranch
)
{
EFI_STATUS Status;
UINT32 Index;
if (fdt_check_header (FdtParserHandle->Fdt) < 0) {
ASSERT (0);
return EFI_INVALID_PARAMETER;
}
for (Index = 0; Index < ARRAY_SIZE (HwInfoParserTable); Index++) {
Status = HwInfoParserTable[Index](
FdtParserHandle,
FdtBranch
);
if (EFI_ERROR (Status) &&
(Status != EFI_NOT_FOUND))
{
// If EFI_NOT_FOUND, the parser didn't find information in the DT.
// Don't trigger an error.
ASSERT (0);
return Status;
}
} // for
return EFI_SUCCESS;
}
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