[Libre-soc-dev] running microwatt-5.7 linux kernel on libresoc

Luke Kenneth Casson Leighton lkcl at lkcl.net
Fri Jan 7 13:26:31 GMT 2022

i'm currently investigating a failure to recognise the device-tree entry
"ibm.architecture,vec5".  it would appear that LDST 0x600 mis-alignment
is causing a byte-inversion of the search term:

pc      600 insn 7db243a6 msr a000000000000001
pc      604 insn 7db142a6 msr a000000000000001
pc      608 insn f92d0080 msr a000000000000001
                          wr @ 00088a80 do 69626d2c61726368 sel ff hcra.mbi

potentially this is a bug in the linux kernel, but i think it is probably
sensible to prioritise adding ldst misalignment.


crowd-funded eco-conscious hardware: https://www.crowdsupply.com/eoma68

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