FWIW in the 2.4 era there was a CONFIG_ANGELBOOT option.
I found some references to Lubbock/Assabeth, not for Zaurus...
It seems Angel in Debug Monitor mode can receive a kernel from
angelboot on remote host.
Here kernel patches and Angel sources:
ftp://ftp.arm.linux.org.uk/pub/linux/arm/people/
Hello,
I'm putting here some links I found about the Zaurus bootloader:
Debug:
http://tdiedrich.de/Zaurus
Secret Keys:
http://piro.sytes.net/~piro/pukiwiki/pukiwiki.php?C3000%A4%CEP2ROM%A4%C8DIAG_MENU%A4%F2%C4%B4%A4%D9%A4%EB#content_1_2
About updater.sh /mversion.bin and checksums
http://digit