> Bill, > > On 06/30/2011 02:10 PM, William C. Landolina wrote: > > Alex - If there is anything I can do to help please let me know. I've been > roughly patching the various builds for a while and really would like to see > this get back in the mainline. > > I will send my patch set in a few moments; just a few more things and it > should be a good start. I have a few questions... > > 1 What boot strapper are you using? The default at91bootstrapper that you > can download from the linux4sam web site?
I start with Atmel's vanilla first stage boot from NAND. I have a much hacked SDCard boot that works as well and that is where I want to head. My target systems do not have NAND or Dataflash. (I can put NAND on my boards for development but I do not want to ship with NAND.) > 2 Are you booting from NAND? I currently boot from NAND - the features I want to get from the current version is booting from, and environment on, SDCard. I hacked that into the December release but it was a hack - the environment was at fixed sector offsets on the SDCard which required building the partition table by hand. Long term I want to get the environment in a file on the SDCard. > 3 How far have you gotten with your patching? Does everything work? For > me, I > have all of my hardware up and running (including the second bank of RAM > which seemed like it was not supported before). I hacked the December release to work, but I know I did some things in the wrong places and in a style that is not Wolfgang-compatible. I stopped working on improving the December release because it was clear that a lot of good things were happening to the MMC framework and the underlying AT91 framework was in flux so it seemed like a good idea to wait until that stabilized before I revisit putting a modern U-Boot on my boards "the right way". I only have one bank of RAM on my custom target so I didn't test the second bank. On my targets the other EBI interface runs a bunch of slow peripherals. > 4 I presume your booting into Linux after U-Boot? Yes, I'm booting Linux 2.6.30 or so. > Best regards, > Alex > > -- > Alex Waterman > Computer Engineer > Phone: 215-896-4920 > Email: awater...@dawning.com Enjoy, Bill. _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
