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Please refer the below link for host environment set-up & flashing procedure for yocto build ,

Dunfell :

[Archived] RPI 3B/3B+ Model Reference Platform

Morty:

[Archived] RDK-B Raspberrypi - Host SetUp and Build InstructionsInstructions#BRaspberrypi-HostSetUpandBuildInstructions-YoctoBuildSteps

Repo Steps

To  build, follow below instructions

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Example PSM Configurations

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<!-- rdk-wanmanager records -->    <Record name="dmsb.wanmanager.wanenable" type="astr">1</Record>     <Record name="dmsb.wanmanager.wanifcount" type="astr">1</Record>     <Record name="dmsb.wanmanager.wanpolicy" type="astr">2</Record>     <Record name="dmsb.wanmanager.wanidletimeout" type="astr">0</Record>  <!-- X_RDK_WanManager.CPEInterface.1. -wanmanager -->    <Record name="dmsb.selfheal.rebootstatus"  type="astr">0</Record>     <Record name="dmsb.wanmanager.if.1.Name" type="astr">eth0</Record>     <Record name="dmsb.wanmanager.if.1.DisplayName" type="astr">WanOE</Record>     <Record name="dmsb.wanmanager.if.1.Enable" type="astr">TRUE</Record>     <Record name="dmsb.wanmanager.if.1.Type" type="astr">2</Record>     <Record name="dmsb.wanmanager.if.1.Priority" type="astr">0</Record>     <Record name="dmsb.wanmanager.if.1.SelectionTimeout" type="astr">0</Record>     <Record name="dmsb.wanmanager.if.1.DynTriggerEnable" type="astr">FALSE</Record>     <Record name="dmsb.wanmanager.if.1.DynTriggerDelay" type="astr">0</Record>     <Record name="dmsb.wanmanager.if.1.Marking.List" type="astr">DATA</Record>     <Record name="dmsb.wanmanager.if.1.Marking.DATA.Alias" type="astr">DATA</Record>     <Record name="dmsb.wanmanager.if.1.Marking.DATA.SKBPort" type="astr">1</Record>     <Record name="dmsb.wanmanager.if.1.Marking.DATA.SKBMark" type="astr"> </Record>     <Record name="dmsb.wanmanager.if.1.Marking.DATA.EthernetPriorityMark" type="astr"></Record>     <Record name="dmsb.wanmanager.if.1.PPPEnable" type="astr">FALSE</Record>     <Record name="dmsb.wanmanager.if.1.PPPLinkType" type="astr">PPPoE</Record>     <Record name="dmsb.wanmanager.if.1.PPPIPCPEnable" type="astr">TRUE</Record>     <Record name="dmsb.wanmanager.if.1.PPPIPV6CPEnable" type="astr">TRUE</Record>     <Record name="dmsb.wanmanager.if.1.PPPIPCPEnable" type="astr">TRUE</Record>

Major Errors and Challenges 

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