[U-Boot] EMAC failure and SPI support for TI DaVinci DM365

[Ian Jeffray <ijeffray@a2etech.com>]

Hi guys,

This question may be mostly directed to Sandeep Paulraj, the TI
tree maintainer, but is also observed in the mainline...

I've had great success with U-Boot on many ADI BF5xx devices, but I'm
having considerably less fun with the TI DM365.

I've a DM365EVM board - the stock U-Boot binary from the PSP 3.10
distribution from TI works ok, but has no SPI ('sf') support, so I
need to build that in for starters (ultimately we're designing a
custom board with only SPI flash - no NAND).

My problem is that even building the 2009.11 release, the current
mainline revision (ie 2010.02 prerelease), or the u-boot-ti mainline,
the EMAC fails and instantly reboots the board... with no mods made
to U-Boot... just a build out of the box fails this way:

git clone git://git.denx.de/u-boot-ti.git
cd u-boot-ti
make davinci_dm365evm_config
make

...then flash on to my board using the sfh_DM36x.exe utility with the
UBL from the PSP 3.10 distribution... and boot up...

  > DM36x initialization passed!
  > TI UBL Version: 1.50
  > Booting Catalog Boot Loader
  > BootMode = NAND
  > Starting NAND Copy...
  > Valid magicnum, 0xA1ACED66, found in block 0x0000001A.
  >    DONE
  > Jumping to entry point at 0x81080000.
  >
  > U-Boot 2009.11-00988-g2a6e256 (Feb 23 2010 - 13:50:13)
  >
  > I2C:   ready
  > DRAM:  128 MB
  > NAND:  2048 MiB
  > (snipped out lots of nand BBT details here from this email)
  > *** Warning - bad CRC or NAND, using default environment
  >
  > Net:
  > Hit any key to stop autoboot:  0
  > DM365 EVM # dhcp
  > DM36x initialization passed!
  > TI UBL Version: 1.50
  > Booting Catalog Boot Loader

As you can see, as soon as I "dhcp", the board is rebooting.  The same
happens if I set "ipaddr" and "netmask" then attempt a tftp or ping.

My expectation was that this stuff would work fine out of the box and
clearly isn't for me -- I hope this is just something I'm doing wrong
here and that someone is able to confirm that the code's kosher and
maybe pointers as to what I could have done wrong?

I do notice that the "Net: " line above has no further detail, wheras
the TI PSP binary version says "Ethernet PHY: GENERIC @ 0x00"
(I've not managed to get a 2009.03 build of my own to run on DM365
to compare yet... that's the version TI supplied as binary somehow)


My second question is about the DaVinci SPI flash support in U-Boot.
I've replaced the 64K SPI flash on the DM365EVM with a larger part,
which works just fine from my self-build Linux kernel, so I know the
device itself is fine.   All attempts to utilise this from U-Boot
are failing.   I realise the SPI DaVinci SPI flash driver is rather
new - wondering what the expectations of this driver are in terms of
stability and testing?


Many thanks for all the great work by everyone on the U-Boot project;
It's certainly been an invaluable asset for us on Blackfin and I hope
we'll be able to get it playing nicely on DaVinci too!

Thanks,
Ian.