[En-Nut-Discussion] AT91sam7X TFTP bootloader

Ole Reinhardt ole.reinhardt at embedded-it.de
Tue Jun 7 21:47:14 CEST 2011

Hi all,

due to multiple request I added our simple TFTP bootloader implemented
for at91sam7X platform to the "nut/boot/at91sam7x_bootloader" directory.

This bootloader is implemented as full Nut/OS application and therefor
has a quite big memory (flash) footprint (48k are reserved for the

Applications the shall be started with this bootloader needs to be
linked to an memory offset of 0xC000 (== flash address 0x0010C000). Use
the following linker scripts to configure Nut/OS for your application


The bootloader itself needs to be configured like any other Nut/OS
application started from the At91 flash rom (so use at91sam7x256_rom.ld
or at91sam7x512_rom.ld).

Have fun!


Ole Reinhardt

PS: To compile the code you have to adjust the path of the included
Makedefs and Makerules in the makefile.


Thermotemp GmbH, Embedded-IT

Embedded Hard-/ Software and Open Source Development, 
Integration and Consulting


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