From mboxrd@z Thu Jan 1 00:00:00 1970 MIME-Version: 1.0 In-Reply-To: <1417423412.1914203.197194673.02F8E8C7@webmail.messagingengine.com> References: <1417410858.1852249.197150289.78A68333@webmail.messagingengine.com> <1417423412.1914203.197194673.02F8E8C7@webmail.messagingengine.com> Date: Mon, 1 Dec 2014 15:54:36 -0600 Message-ID: From: Steven Stallion To: Fans of the OS Plan 9 from Bell Labs <9fans@9fans.net> Content-Type: text/plain; charset=UTF-8 Subject: Re: [9fans] Porting plan9 Topicbox-Message-UUID: 30d93db8-ead9-11e9-9d60-3106f5b1d025 They do. In fact, I contributed a patch a while back to add u-boot image support to 5l a while back. U-boot has also been patched to expect these binaries. You can take a look at what has been done in the Chromebook port (http://code.google.com/p/9chrome), but I've been stalled due to demands at the office. FWIW, u-boot is not a net-negative at all. For SoC's it simplifies boot significantly - there is zero reason to eschew the functionality it brings. http://plan9.bell-labs.com/sources/contrib/stallion/patch/arm-uboot/ HTH, Steve On Mon, Dec 1, 2014 at 2:43 AM, Ramakrishnan Muthukrishnan wrote: > On Mon, Dec 1, 2014, at 11:14 AM, erik quanstrom wrote: >> > Surprisingly I didn't see a paper on porting Plan9 to new architectures >> > in the plan9 paper collection. Any help and pointers on how to get >> > started with the porting effort will be highly appreciated. >> >> it's all about the documentation. if you can get it, boringing up a new >> kernel for a new architecture can go from impossible to very doable. >> it's still a lot of work, and it can be hard to sit down and spend a week >> finding that one little bit that prevents anything from working. good >> luck, nonetheless. more architectures is definately moar better. > > Thanks. IMX6 documentation is freely available. There is a version of > u-boot. The manufacturer (Solid Run) also has made the board schematics > etc available. > > From the reading of booting(8), I am assuming that the ARM devices in > plan9 use the u-boot for booting the kernel up? >