github.com/linuxboot/fiano@v1.2.0/pkg/intel/metadata/cbnt/chipset_ac_module_information_nocodegen.go (about)

     1  // Copyright 2017-2021 the LinuxBoot Authors. All rights reserved
     2  // Use of this source code is governed by a BSD-style
     3  // license that can be found in the LICENSE file.
     4  
     5  //go:build !manifestcodegen
     6  // +build !manifestcodegen
     7  
     8  //
     9  // To avoid errors "type ChipsetACModuleInformation has no field or method ReadFrom"
    10  // with a build tag "!manifestcodegen"
    11  
    12  package cbnt
    13  
    14  import (
    15  	"bytes"
    16  	"encoding/binary"
    17  	"fmt"
    18  	"io"
    19  )
    20  
    21  // ParseChipsetACModuleInformation parses Chipset AC Module Information Table according to the version
    22  func ParseChipsetACModuleInformation(r io.Reader) (int64, ChipsetACModuleInformationV5, error) {
    23  	var result ChipsetACModuleInformationV5
    24  	total, err := result.Base.ReadFrom(r)
    25  	if !bytes.Equal(result.Base.UUID[:], chipsetACModuleInformationSignature) {
    26  		return 0, ChipsetACModuleInformationV5{}, fmt.Errorf(
    27  			"incorrect UUID [%x], expected: [%x]", result.Base.UUID, chipsetACModuleInformationSignature)
    28  	}
    29  	if err != nil {
    30  		return total, result, err
    31  	}
    32  	if result.Base.Version < 5 {
    33  		return total, result, nil
    34  	}
    35  	err = binary.Read(r, binary.LittleEndian, &result.TPMInfoList)
    36  	total += int64(binary.Size(result.TPMInfoList))
    37  	return total, result, err
    38  }