![pk](/assets/img/avatar_default.png)
after the other CPUs have already return into the PROM through prom_cpustop(). So don't do it; try to halt the other CPUs only when an actual `halt' is requested. My guess in this case is that the PROM does not expect its original boot CPU to call prom_cpustop(0), or possibly treats it as the equivalent of a prom_halt() which is then called again by some other CPU. In any case, the result is garbage.
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