Install barebox on target

[Baruch Siach]

Hi Sascha, Thomas,

On Mon, Feb 28, 2011 at 08:40:53AM +0100, Sascha Hauer wrote:
> On Fri, Feb 25, 2011 at 05:08:10PM +0100, Thomas Mayer wrote:
> > thanks, I will try that.
> > Today I got our real hardware. It consists of the freescale cpu board, a
> > custom baseboard with a different display.
> > With that I was able to start barebox completely. Network works fine,
> > but I can't access the nand memory, because barebox doesn't find it at
> > startup. I added all possible nand drivers to barebox, but it still
> > doesn't work.
> > 
> > Any idea?
> > 
> > --------------------------------------- u-boot output
> > -----------------------------------------
> > U-Boot 2009.08 (Jan 13 2010 -
> > 
> > Page Geometry     :
> > 4096+218
> 
> This will cause problems. I never had a nand with 4k block size and I
> doubt it will work out of the box. I don't know if that's the reason
> barebox does not find no nand device at all though.

I'm also seeing problems with a 4k page size (+218 OOB) SLC NAND flash of 
Micron on i.MX25. Barebox does identify the flash chip, but can't read it 
correctly.  I'm investigating the issue. So far I've found that the OOB area 
is read as 0x00s instead of 0xffs, even for good blocks. This makes Barebox to 
mark the whole flash as bad blocks.

The Linux kernel, however, seems to work correctly with this flash when 
applying a small fix to use the correct(?) nand_ecclayout.

baruch

> > --------------------------------------- barebox output
> > ------------------------------------------
> > barebox 2011.02.0 (Feb 25 2011 - 16:35:47)
> > 
> > Board: Freescale MX35 3Stack
> > No NAND device found!!!
> > cfi_probe: cfi_flash base: 0xa0000000 size: 0x04000000
> > mc13892-i2c at mc13892-i2c0: PMIC ID: 0x000045d0 [Rev: 2.0a]
> > smc911x: no smc911x found on 0xb6000000 (byte_test=0x00f000f0)
> > imx-ipu-fb at imx-ipu-fb0: i.MX Framebuffer driver
> > mc13892-i2c at mc13892-i2c0: revision: 0x45d0
> > i.MX35 PDK CPU board version 1.
> > Malloc space: 0x86f00000 -> 0x87f00000 (size 16 MB)
> > Stack space : 0x86ef8000 -> 0x86f00000 (size 32 kB)
> > Open /dev/env0 No such file or directory
> > no valid environment found on /dev/env0. Using default environment
> > running /env/bin/init...
> > 
> > 
> > 
> > regards
> > Thomas
> > 
> > 
> > 
> > Am 25.02.2011 16:06, schrieb Sascha Hauer:
> > > On Fri, Feb 25, 2011 at 10:15:01AM +0100, Thomas Mayer wrote:
> > >   
> > >> Hi Sascha,
> > >>
> > >> That's not quite correct. When you use the debug + personality board you
> > >> can boot directly from a mmc-card which contains bootloader, kernel and
> > >> rootfs without modifications. Only if you use the single personality
> > >> board, you have to modify die board a little bit.
> > >>     
> > > Ah, ok. I didn't know that.
> > >
> > >   
> > >> Thanks for your short introduction. I tried to run the barebox image
> > >> with u-boot and it seems to work. But after I get the following output
> > >> barebox stops and do nothing.
> > >>     
> > > That's a bug in the support for multiple network devices. Please pull
> > > the -next branch again, then it should work.
> > >
> > > Sascha

-- 
                                                     ~. .~   Tk Open Systems
=}------------------------------------------------ooO--U--Ooo------------{=
   - baruch at tkos.co.il - tel: +972.2.679.5364, http://www.tkos.co.il -