[U-Boot-Users] u-boot as second stage boot loader

Wolfgang Denk wd at denx.de
Tue Sep 21 11:59:54 CEST 2004


In message <1095763351.12961.9.camel at dual> you wrote:
> 
> I've got an at 91 rm 9200 based board with a 2MB _SERIAL_ flash
> connected to it. Since the flash is serial, it is not mapped to memory,
> and the board cannot boot from it. However, the first 16kbyte of this
> serial flash gets copied into the 16kbyte SRAM of the processor. Now I
> have a small boot loader loaded into the SRAM which initializes the
> SDRAM, can load pages from the serial flash, talk on the serial
> line,etc.
> 
> The next step would be to load u-boot as a second stage boot loader,
> however how can someone do this?

Just use the pre-loader as supplied  by  Atmel  with  the  at91rm9200
development kit.

Don't reinvent the wheel. Use the existing code.

Best regards,

Wolfgang Denk

-- 
Software Engineering:  Embedded and Realtime Systems,  Embedded Linux
Phone: (+49)-8142-4596-87  Fax: (+49)-8142-4596-88  Email: wd at denx.de
I've got a bad feeling about this.




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