[U-Boot-Users] Re: MPC5200 Lowboot config

[Victor Wren <vwren@timension.com>]

I'm having some trouble with the lowboot config on the MPC5200LITE.

In looking through the configs, I notice, where TEXT_BASE=0xFF000000
#define ENVADDR=CFG_FLASH_BASE+30000

Since the u-boot image goes from FF000000 to FF035250, this would 
appear to drop the environment inside the u-boot code.  This is apparently
confirmed by the fact that when I do saveenv, u-boot will not come up 
anymore.  (this is without setting any environment variables, even).

When I write a virgin copy of u-boot to the flash, the addresses at FF0030000
appear to hold something other than environment values.  After saveenv, they
hold environment variables, and everything after the values is filled with 
zeroes (and u-boot is dead).

Is there a particular reason for having the ENV below the end of the u-boot 
image?  Is there a better place to put it? Possibly the beginning of the next 
sector (0xFF040000)

Victor Wren


Victor Wren
Designer,
Timension Inc.
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