Hari Bathini <hbathini@xxxxxxxxxxxxx> writes:
Kernel built with CONFIG_PPC_EARLY_DEBUG_OPAL enabled expects r8 & r9
to be filled with OPAL base & entry addresses respectively. Setting
these registers allows the kernel to perform OPAL calls before the
device tree is parsed.
I'm not convinced we want to do this.
If we do it becomes part of the kexec ABI and we have to honour it into
And in practice there are no non-development kernels built with OPAL early
debugging enabled, so it's not clear it actually helps anyone other than