From mboxrd@z Thu Jan 1 00:00:00 1970 From: Thomas Petazzoni Date: Sun, 7 Apr 2013 10:08:22 +0200 Subject: [U-Boot] u-boot boot process is broken, how do i recover? In-Reply-To: <20130404144718.1b758045@lilith> References: <20130404101815.705d805c@skate> <20130404111734.14bf0fd0@lilith> <20130404144718.1b758045@lilith> Message-ID: <20130407100822.4f45750f@skate> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de Dear Albert ARIBAUD, On Thu, 4 Apr 2013 14:47:18 +0200, Albert ARIBAUD wrote: > Since you seem to have a binary meant for UART booting, yes, you might > try sending it to the board; with any luck that'll allow you to inspect > and possibly revert your U-Boot environment into what it was before the > bricking. As to how... any serial app with Xmodem should work, I > presume. If the transfer starts, chances are the image will run > automatically. No, any app doing Xmodem will not work. In order to turn the Marvell Kirkwood romcode into UART boot mode, you have to send a series of magic bytes to the UART. This is what kwboot does before sending the binary using the Xmodem protocol. Best regards, Thomas -- Thomas Petazzoni, Free Electrons Kernel, drivers, real-time and embedded Linux development, consulting, training and support. http://free-electrons.com