disable_cmd_atags with Bare Metal Programs - Raspberry Pi Forums

dear all,
experiencing odd when trying avoid arm stub loader in bare metal programs.

boot arm cpu in secure svc option `kernel_old=1` in `config.txt`.
noticed binary file size greater 0x100 byte not work!
added option `disable_cmd_atags=1` , made trick, seems without option atags overwrite kernel?!?

if remember correctly, specifying `kernel_old=1` kernel should loaded @ 0x0.
how comes without explicitly disabling atags kernel overwritten atags?

appreciate idea.
thnx

the atags written 0x0100.

should ok if write kernel there no code between 0x100 , 0x200.

raspberrypi