Bug 196575

Summary: Need methods to write to disk from powerpc loader
Product: Base System Reporter: Justin Hibbits <jhibbits>
Component: miscAssignee: freebsd-bugs (Nobody) <bugs>
Status: New ---    
Severity: Affects Only Me CC: kbowling
Priority: ---    
Version: CURRENT   
Hardware: powerpc   
OS: Any   

Description Justin Hibbits freebsd_committer 2015-01-06 20:48:01 UTC
The PowerPC loader doesn't currently support writing to disk from the loader.  This causes 'nextboot -k' to always boot the next kernel, unless explicitly unloaded, whereas on i386 once the test kernel is loaded, the behavior is reverted back to the default kernel, in case of failure.

On powerpc (32-bit) the kernel can be unloaded, which reduces the impact of this issue, but on powerpc64, unloading the kernel doesn't completely work, so loading a new kernel does not work, and panics or load failures ensue.  Of course, this itself should be fixed, to allow unloading, but that's another problem entirely.