From: Andreas Larsson <andr...@gaisler.com> Date: Tue, 14 Nov 2017 15:03:42 +0100
> Apart from using LEON3 instruction timing it allows for usage of the > CASA instruction. > > Signed-off-by: Andreas Larsson <andr...@gaisler.com> Up until this point the LEON kconfig option is largely passive. All of the sparc_cpu_type logic drives what parts of the kernel are used based upon the run-time detected cpu type. But with this change, it completely breaks the 32-bit sparc kernel on any non-Leon processor. I wish you would reconsider this approach, and instead do hardcoded assembler instruction opcodes to use "casa" in assembler, and run time detect CAS support in the 32-bit cpu. Thank you.
