This patch is to revert the changes made to CSR address width calculation in 4f66420 for backward-compatibility.
4f66420 does automatic calculation of the required address width for the CSRs, assuming the CSR memory region always takes up 64KB.
However, some targets (e.g. metlino in ARTIQ) needs a larger address space to support more CSR regions. Just as pre- 4f66420, assigning a larger csr_address_width can solve the issue.
If the effect of 4f66420 is desired, simply set csr_address_width=13 when passing cpu_bus_width=64 to SoCCore.
This patch is to revert the changes made to CSR address width calculation in 4f66420 for backward-compatibility. 4f66420 does automatic calculation of the required address width for the CSRs, assuming the CSR memory region always takes up 64KB. However, some targets (e.g. metlino in ARTIQ) needs a larger address space to support more CSR regions. Just as pre- 4f66420, assigning a larger
csr_address_widthcan solve the issue.If the effect of 4f66420 is desired, simply set
csr_address_width=13when passingcpu_bus_width=64toSoCCore.