ArmBootArchParser.c File Reference

#include <Library/BaseLib.h>
#include <Library/BaseMemoryLib.h>
#include "FdtHwInfoParser.h"
#include "CmObjectDescUtility.h"
#include "Arm/BootArch/ArmBootArchParser.h"

Go to the source code of this file.

Functions
STATIC EFI_STATUS EFIAPI	PsciNodeParser (IN CONST VOID *Fdt, IN INT32 PsciNode, IN CM_ARM_BOOT_ARCH_INFO *BootArchInfo)
EFI_STATUS EFIAPI	ArmBootArchInfoParser (IN CONST FDT_HW_INFO_PARSER_HANDLE FdtParserHandle, IN INT32 FdtBranch)

Variables
STATIC CONST COMPATIBILITY_STR	PsciCompatibleStr []
STATIC CONST COMPATIBILITY_INFO	PsciCompatibleInfo
STATIC CONST CHAR8 *	PsciMethod []

Detailed Description

Arm boot architecture parser.

Copyright (c) 2021, ARM Limited. All rights reserved.
SPDX-License-Identifier: BSD-2-Clause-Patent

Reference(s):

• linux/Documentation/devicetree/bindings/arm/psci.yaml

Definition in file ArmBootArchParser.c.

Function Documentation

ArmBootArchInfoParser()

EFI_STATUS EFIAPI ArmBootArchInfoParser	(	IN CONST FDT_HW_INFO_PARSER_HANDLE	FdtParserHandle,
		IN INT32	FdtBranch
	)

CM_ARM_BOOT_ARCH_INFO parser function.

The following structure is populated: typedef struct CmArmBootArchInfo { UINT16 BootArchFlags; // {Populated} } CM_ARM_BOOT_ARCH_INFO;

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.

Parameters

[in]	FdtParserHandle	A handle to the parser instance.
[in]	FdtBranch	When searching for DT node name, restrict the search to this Device Tree branch.

Return values

EFI_SUCCESS	The function completed successfully.
EFI_ABORTED	An error occurred.
EFI_INVALID_PARAMETER	Invalid parameter.
EFI_NOT_FOUND	Not found.
EFI_UNSUPPORTED	Unsupported.

Definition at line 115 of file ArmBootArchParser.c.

PsciNodeParser()

STATIC EFI_STATUS EFIAPI PsciNodeParser	(	IN CONST VOID *	Fdt,
		IN INT32	PsciNode,
		IN CM_ARM_BOOT_ARCH_INFO *	BootArchInfo
	)

Parse a Psci node.

Parameters

[in]	Fdt	Pointer to a Flattened Device Tree (Fdt).
[in]	PsciNode	Offset of a Psci node.
[in]	BootArchInfo	The CM_ARM_BOOT_ARCH_INFO to populate.

Return values

EFI_SUCCESS	The function completed successfully.
EFI_ABORTED	An error occurred.
EFI_INVALID_PARAMETER	Invalid parameter.

Definition at line 53 of file ArmBootArchParser.c.

Variable Documentation

PsciCompatibleInfo

STATIC CONST COMPATIBILITY_INFO PsciCompatibleInfo

Initial value:

= {
  ARRAY_SIZE (PsciCompatibleStr),
  PsciCompatibleStr
}

COMPATIBILITY_INFO structure for the PsciCompatibleInfo.

Definition at line 28 of file ArmBootArchParser.c.

PsciCompatibleStr

STATIC CONST COMPATIBILITY_STR PsciCompatibleStr[]

Initial value:

= {
  { "arm,psci-0.2" },
  { "arm,psci"     }
}

List of "compatible" property values for Psci nodes.

Other "compatible" values are not supported by this module.

Definition at line 21 of file ArmBootArchParser.c.

PsciMethod

STATIC CONST CHAR8* PsciMethod[]

Initial value:

= {
  "smc",
  "hvc"
}

List of PSCI method strings.

Definition at line 35 of file ArmBootArchParser.c.