[U-Boot-Users] Booting u-boot on walnut

Hello. If anyone has experience in getting u-boot running (temporarily or flashing, whatever) on IBM 405GP walnut board WITHOUT using external debugger probes, please share your knowledge. Preferred way would seem to be to load u-boot into SRAM (faking to be flash) and running it from there, but without processor probe this seems difficult. Any help is appreciated!

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