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fd51ff6328
This stops using 7xx common SPRs init function and adds separate set of helpers for 970. This does not copy ICTC SPR as neither 970 manual nor PowerISA mention it. This defines 970/book3s PMU SPRs constants as they differs from the ones used for 7XX. This creates 2 helpers for PMU SPRs, one for supermode privileged SPRs and one for user privileged SPRs as "sup" versions can be shared across the family while "user" versions will behave different starting POWER8 (which will be addressed later). This allows writing to Uxxxx SPRs from supermode. spr_write_ureg() is implemented for this as a copy of already existing spr_read_ureg(). This allows writing to supervisor's SIAR - it used to be disabled when gen_spr_7xx() was used. Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru> Signed-off-by: Alexander Graf <agraf@suse.de>