From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Message-ID: <3BB25C4D.7708F14C@opensource.se> Date: Thu, 27 Sep 2001 00:53:01 +0200 From: Magnus Damm MIME-Version: 1.0 To: Josh Huber Cc: Grant Erickson , linuxppc-embedded@lists.linuxppc.org Subject: Re: Solutions for Fast Software Upgrade in Linux/PPC References: <87n13idk7e.fsf@mclinux.com> Content-Type: text/plain; charset=us-ascii Sender: owner-linuxppc-embedded@lists.linuxppc.org List-Id: I recommend a combination of a simple bootloader and a reboot-linux-in-linux piece of software. You can find miniboot - a safe and simple bootloader at http://opensource.se/projects/ With a clever-designed upgrade application it's possible to update the flash in a fail-safe way. One neat feature is that miniboot runs without any external RAM, which makes it possible to keep the RAM-code in a upgradeable image. I also have a driver, relf, (Reboot ELF) that makes it possible to reboot an ELF directly from Linux. It has booted Linux, vxWorks and pSOS. mpc8xx only. If you're intrested - give me a mail and I will send it to you. Good luck / Magnus Josh Huber wrote: > > Grant Erickson writes: > > [snip] > > I'd also recommend the fast-reboot option, but since no one mentioned > yet I'll suggest Werner Almsberger's bootimg utility. > > Take a look at: > > > specifically, bootimg-current.tar.gz > > Also, in ../booting/ there is a paper describing the > method. (bootinglinux-current.ps.gz) > > I've tested this many times (we use it at Mission Critical for our > kernel crash dump system), and if you're looking for fast reboots this > is the way to go. > > Unfortunately, it doesn't solve the upgrading of the ROM issue. > > For the lazy who don't want to look at the references, what this > allows you to do is boot a linux kernel, using an already loaded Linux > kernel. > > ttyl, > -- > Josh Huber > ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/