Hi:

System Configuration:
Hardware:
Custom Board based on the AT91SAM9260EK with Dataflash AT45DB642 on SPI0 and NPCS1
SD Card (MCI Enabled) at NPCS0

Software (stored in the Dataflash):
AT91 Bootstrap
U-Boot 2009.08
Linux 2.6.31.12

Problem:
We require to upgrade the Linux Kernel remotely via TCP/IP (but don't have access to a local TFTP server). Application is downloaded from a remote server.

It seems that once Linux is up an running, there is no way to access the Dataflash to update the kernel.

Questions:
1. Is it possible to update the Linux Kernel with the described system (hardware/software)?

2. Is there any way to access the Dataflash from Linux, so that the kernel can be upgraded? If so, what is the required configuration?

3. Is is possible to access the SD Card from U-Boot (to copy a file from it into the Dataflash)?


Regards,

Alex.