> Bill, > > On 06/30/2011 04:54 PM, William C. Landolina wrote: > > 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.) > I see. I have not tried any of the MMC u-boot stuff for my board (a > sam9m10g45ek). > > > 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". > Ahh, Wolfgang compatible :). I still haven't really figured out exactly what > is > actually correct with the AT91 framework code yet. I just started playing with > this a few weeks ago. There was a patch a little which back which was the > reference implementation for the AT91 framework, but I could not find it > when I searched my mail box. > > > 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. > Ah, so dual RAM is no matter for you. > > Which config header are you using? Naturally, I am using the sam9m10g45ek > header, but since you have a slightly different board, which doesn't appear > to have a header, how did you proceed?
I start with the 9G45EKES headers and throw things out. My board is an EKES minus a lot of things - It is just a 9G45 with single bank RAM, SDCard and serial ports. No display, dataflash, codec, or NAND. I have USB ports on the board but don't need or want it in U-Boot. I do have some interesting peripherals hanging off the second EBI but they don't come into play at U-Boot time. Using a stock EKES U-Boot on my board will work - nothing bad happens on my board if U-Boot turns on the display controller for example. I do have an official Atmel AT91SAM9G45-EKES for testing as well. [And 9260 and 9G20 versions in the closet as well]. When testing U-Boot I get the Atmel board working then I start whittling down the configuration to fit my board. > Best regards, > Alex Thanks, Bill. _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
