From mboxrd@z Thu Jan 1 00:00:00 1970 From: Marek Vasut Date: Mon, 11 Jun 2018 13:55:06 +0200 Subject: [U-Boot] [PATCH v2 3/3] common: Generic loader for file system In-Reply-To: <1528717995.9614.6.camel@intel.com> References: <1527138244-16058-1-git-send-email-tien.fong.chee@intel.com> <1527138244-16058-4-git-send-email-tien.fong.chee@intel.com> <1528344245.10642.1.camel@intel.com> <1528360598.10642.8.camel@intel.com> <1528364720.10642.15.camel@intel.com> <1528366318.10642.19.camel@intel.com> <0115d042-8f5d-45ff-5605-7343b051db12@denx.de> <1528693318.9950.5.camel@intel.com> <1528717995.9614.6.camel@intel.com> Message-ID: <81b8f03b-a5d3-4883-a3bc-f1f010f187d3@denx.de> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit To: u-boot@lists.denx.de On 06/11/2018 01:53 PM, Chee, Tien Fong wrote: > On Mon, 2018-06-11 at 11:39 +0200, Marek Vasut wrote: >> On 06/11/2018 07:01 AM, Chee, Tien Fong wrote: >> [...] >>> >>>> >>>>> >>>>>> >>>>>> This is a configuration. You do not need (new) a DT >>>>>> compatible >>>>>> for >>>>>> that. >>>>>> So why is the DT compatible even needed in the FW loader at >>>>>> all ? >>>>>> >>>>> I thought DT compatible is used by driver to find the fs_loader >>>>> node in >>>>> DTS. May be i am wrong. >>>> There should be no FW loader in the DTS. Why would there be one ? >>>> >>>  I added DTS support for user to define storage type and default >>> partition. So you want me to remove the DTS? >>> Removing the DTS, then user can only set storage type and partition >>> through dev instance. So, this design OK for you? >> How does Linux do it ? >> > Linux firmware loading method is different with this > Linux loading firmware with > 1. Firmware search paths - which is hardcoded in root file system > 2. Built-in firmware - part of kernel binaries > > This patch loading firmware with > 1. Storage type and partition specified in DTS, but storage type can > be overridden dev instance and partition through U-boot variable > environment. > > Or: > > 2. Storage type can be set through dev instance, and partition through > U-boot variable environment. No DTS is required. And why can we not do as Linux does ? -- Best regards, Marek Vasut