Hi, We use a fail back mecanism for Linux but no such mechanism fo u-boot. During the upgrade, we do also a CRC check to be sure that the updgrade was done correctly. And with a flag written in a custom config sector of the flash, we can tell to ppcboot if the upgraded kernel was running correctly. But for our safety we won't never upgrade ppcboot.
-----Original Message----- From: Chris Simmonds [mailto:chris@2net.co.uk] Sent: Tuesday, December 02, 2003 3:39 PM To: u-boot-users@lists.sourceforge.net Subject: [U-Boot-Users] Field upgrade
Hi,
One of my requirements is that the firmware be field upgradeable. The problem at the moment is that if something goes wrong while erasing and programming a new u-boot there is no recovery without a jtag/bdm debugger. Does anyone have a solution, or is it not a problem in practice? I was playing with the idea of having a backup u-boot and some method of falling back to it if the primary copy is corrupt.
Chris.
-- Chris Simmonds 2net Limited chris@2net.co.uk http://www.2net.co.uk/ Tel: +44 (0)1962 869003 Fax: +44 (0)870 056 7556 "If it's not connected, it's not effective"(tm)
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