rpx_cfg() copy to NVRAM?
Mark S. Mathews
mark at absoval.com
Wed May 31 02:30:42 EST 2000
On Tue, 30 May 2000, Matthew Locke wrote:
> > I'm in the process of changing head.S and embed_config.c to work with the
> > new EP bootloader.
>
> Why? You don't need to change anything. There are two configuration
> variables in the eeprom that need to be set.
Why? the HZ key is no longer present and the value of the SB key is now
baud instead of baud/100.
Additionally, based on my read of the bootldr docs, EP (you? ;-) is trying
to set things up so that (in the future) they can change the contents or
format of the eeprom without warning. Therefore, the bootldr does a
'conversion' of the eeprom data to the RPXU key=value similar format and
writes it to dpram.
I get the sense that the keys and value formats won't change whereas the
contents of eeprom might be changed in the future.
> SYPCR needs to be set to turn the watchdog off. Can't remember the value
> and I don't have the docs in front of me.
I'm using 0xffffff89
> NVRAM needs to be set to
> non-zero, even if the board doesn't have any nvram.
I'm using a 'no-nvram' rpxlite and I have NVRam set to zero. Works just
fine. Is this an issue with the bootldr or with what Linux wants from
eeprom?
-Mark
Mark S. Mathews
AbsoluteValue Systems Web: http://www.absoval.com
P.O. Box 941149 e-mail: mark at absoval.com
Maitland, FL 32794-1149 Phone: 407.644.8582
USA Fax: 407.539.1294
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