[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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