On Tue, Sep 10, 2024 at 09:48:10PM +0100, Jiaxun Yang wrote: > > > 在2024年9月10日九月 下午9:07，Serge Semin写道： > [...] > > Both MIPS P5600 and P6600 databooks define the GCR_BASE field as > > optionally R/W: > > > > GCR_BASE 31:15 This field sets the base address of the 32KB R or R/W > > GCR block of the P5600 MPS. (IP Config- > > This register has a fixed value after reset if uration) > > configured as Read-Only (an IP Configuration Option). > > > > Thanks for the pointer, I traced code history and it seems like MIPS decided > to not expose this functionality at some point, but documents were not updated. Got it. Thanks for clarification. > > Maybe I should add a read back check here. The check is already implemented in the mips_cm_probe() method. Just 10 lines below the mips_cm_phys_base() method call. -Serge(y) > > Thanks > -- > - Jiaxun
