[U-Boot-Users] U-boot environment in Xilinx System ACE?
wd at denx.de
Thu Jul 7 22:00:41 CEST 2005
in message <OFD86B567B.6DB5DBFC-ON07257037.005D553D-07257037.005E4D94 at mck.us.ray.com> you wrote:
> The nature of the design requires that the Xilinx System ACE compact flash
> card be the only nonvolatile memory on the board - no plain old FLASH
> memory or I2C EEPROM. Therefore, I would like to store the U-Boot
> environment as a file on the compact flash card.
This has been discussed before...
> I have checked the latest CVS sources and it appears that no one has
> implemented this yet.
> Before I take a crack at it, is anyone planning to do this or in the
> process of doing it? Does anyone have any advice or caveats?
This is not trivial to handle. The environment needs to be accessed
very, very early in initialization - to read the console baudrate
when starting the console driver. IDE / CompactFlash on the other
hand gets initialized much, much later, long after relocating the
whole stuff to RAM.
I don't see how these two situations mix easily. Can you attach a
EEPROM via I2C or so?
Software Engineering: Embedded and Realtime Systems, Embedded Linux
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
Life would be so much easier if we could just look at the source
code. -- Dave Olson
More information about the U-Boot