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Thu, 09 Sep 2021 19:16:41 +0200 To: Dusan Radic , barebox@lists.infradead.org References: From: Oleksij Rempel Message-ID: <3eb43ce0-d56f-611b-d5d4-631a9890c36f@rempel-privat.de> Date: Thu, 9 Sep 2021 19:16:40 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.13.0 MIME-Version: 1.0 In-Reply-To: Content-Language: en-US X-Provags-ID: V03:K1:g3D3KzYYZPplXBeGiCV1+DP95Vu4mjcQnyx+DvOQ6T0x85fmQGr naOCFhVSFikhot20dvFQrAqHpVLan6ZnQA/vJv1A8Zdi+Nv0LtqRTQ+EwKf0oQqV5/CP35o JU+00dP7EY5T0R5Bj8jg6M5Yka55BmI/lVIcEAOuxfKYWfc3aUMy2VFycpPKyXOABGFCMav 2QVlV8NPeuCbULbmjY2pA== X-UI-Out-Filterresults: notjunk:1;V03:K0:1n3hhPHklmA=:AjT6MFLmiCkakuBlzNi+jD mXq5s11ScU2u/1W0aMxGM5Oa9icbo0WBpJSjKYXOjBvQnZv85lB4oN05c3VXQL57waD9Mdmht Qq+blsxDqOPjr9AeuxGYc2f+1nTURi8SicWenATNm81Ezo0DhNPD/75I6pJiYb/T9POKbr6LD MU2Srv40ffQymeCFYt1JVSAu0MqdN5osZ9iYKPxyWaZLPvWqqpNk5iebniMv0wwehcc41fXtp q2xqzCHD5ZARIFcTkobYLX2bORTkg24pJenhPkd6VpExqwz63rTl7NtubPBKNn7fzNjWTV5bv ZBv7ZJGb5qulITCHxPK+QFdvxWIOpX08Y7AOqdd8sV0JxpDGlEQJmWsNIEMeAE04aA/2ijSTW 3hxo/gxRCQpZ5ylQVg2tl/+rofPVgtLP7SxLHS3qBtbq/tThyk0AvudHp6oHScB8aMqboclnD jmliZZ7Wjn7ushcUjMGDiT4s3DsKWxkFaCkZ57mUgQXsNQt4lZpjWzjmqHRQ1TpXPCRJtOgUG dGHYyY+HGktc2L5PeVd8pt+nr+UHEerXlWt4YprK12WFl48XbuP9B3dQO8yr3d3tpK4v5uCNz iE3lpGbnBYSm4oAyyQeO8AY0RdXintQ2zFWFxMLG2FRPUm1LzeC9s4xBoa1VOkvWDaiTQBmkm 50vinYRe4MIBhQCvOsflPp174A41loeGJQsuX5E09VbNY1/kclCQmHDtWrnZr1vTZaLeUlk/e lGAEqb6M0KstFv8hfdWbPBckgQ21gxlcDTAW1zB66jFEX0McNJOsrXPlGJKmvdYDF1HmRFpsr Lp8ahqIF+yWHuwyHXtr6n4Y4+JiURAAMNP3NmDHMELYL6b/m4EPgMbdfIp7klHYncKMfWNtYD OhsXExgofntV8lxZ0yurEJ30b1Uzec0XyvIP44qcxT1A3gxl3d2UK5dzacEJ7XwkdYRwuw38V t+c9oej2w4Ryxn8MvFDHen5zQQupHNLkocC9NjkTmhpk9QTexMcwfCziHFqJdd5+/m6+iO9+d PxoUBqcKXjP8Jz3QLT1QruQkfonUXrVikQSHGwnnEJzQhD0IDnkVL8obFkJYqNzNAP2JNjDmB 72Qj3F/oVgsego= X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210909_101645_604182_21CA98B7 X-CRM114-Status: GOOD ( 19.39 ) X-BeenThere: barebox@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "barebox" X-SA-Exim-Connect-IP: 2607:7c80:54:e::133 X-SA-Exim-Mail-From: barebox-bounces+lore=pengutronix.de@lists.infradead.org X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on metis.ext.pengutronix.de X-Spam-Level: X-Spam-Status: No, score=-5.5 required=4.0 tests=AWL,BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,NICE_REPLY_A,RCVD_IN_DNSWL_MED,SPF_HELO_NONE, SPF_NONE autolearn=unavailable autolearn_force=no version=3.4.2 Subject: Re: barebox environment early loading X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on metis.ext.pengutronix.de) Hello Dusan, Am 09.09.21 um 13:58 schrieb Dusan Radic: > Hello there, > > is there a possibility to read an environment variable as soon as in > ipufb.c? > To be more accurate, before the frame buffer is initalised I need set > the bus_format manually and the correct value is stored in a non > volatile environment variable. > I have tried the following > > const char* value; > > value = getenv("nv.dataval"); > > However the result is always NULL. > > If I try the same somewhere in board.c then I get the correct value, > but that ist too late to configure the frame buffer. > > Has anyone managed to read the environment early, and if yes how? Do I > have to somehow manually load the environment path? I have tried this > default_environment_path_set(default_environment_path); but it doesn't > seem to work. > > I am using barebox 2017.12.0 uii... drop it, it stinks :D First of all, update it to the latest version - 2021.08.0 or even next. Then port the board code to the DEEP_PROBE. Grep for BAREBOX_DEEP_PROBE_ENABLE. Then you will probably need something like of_device_ensure_probed() to ensure your environment storage is probed. There are probably some more challenges, but this are initial steps. -- Regards, Oleksij _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox