markos_ | programmerjake, lkcl https://www.phoronix.com/news/LoongArch-LBT-Linux-6.6 | 07:12 |
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programmerjake | yeah, i looked in the docs, nothing other than a mention | 07:15 |
programmerjake | so i guess everyone outside of loongson has no clue what instructions there are | 07:16 |
markos_ | will take a while before they release these docs | 07:17 |
markos_ | if at all | 07:17 |
programmerjake | their docs github repo is archived | 07:19 |
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octavius | Been looking at the Makefile in soc repo for generating the core (to add SVP64 while retaining the Microwatt compatibility). | 18:03 |
octavius | I've added an argument for generating a microwatt-compatible core with SVP64 enabled, see the commit here: | 18:03 |
octavius | https://git.libre-soc.org/?p=soc.git;a=commitdiff;h=7c41d80d9a1af94f8dacd808b822bee62a620811 | 18:03 |
octavius | When running make, an AttributeError occurs. 'PowerDecode2' missing an attribute 'use_svp64_ldst_dec'. | 18:03 |
octavius | Traceback (most recent call last): | 18:03 |
octavius | File "src/soc/simple/issuer_verilog.py", line 211, in <module> | 18:03 |
octavius | vl = verilog.convert(dut, ports=dut.external_ports(), name=name) | 18:03 |
octavius | File "/home/am/src/nmigen/nmigen/back/verilog.py", line 43, in convert | 18:03 |
octavius | rtlil_text = rtlil.convert(*args, **kwargs) | 18:03 |
octavius | File "/home/am/src/nmigen/nmigen/back/rtlil.py", line 1069, in convert | 18:03 |
octavius | fragment = ir.Fragment.get(elaboratable, platform).prepare(**kwargs) | 18:03 |
octavius | File "/home/am/src/nmigen/nmigen/hdl/ir.py", line 37, in get | 18:03 |
octavius | new_obj = obj.elaborate(platform) | 18:03 |
octavius | File "/home/am/src/soc/src/soc/simple/issuer.py", line 1651, in elaborate | 18:03 |
octavius | exec_pc_o_valid, exec_pc_i_ready) | 18:03 |
octavius | File "/home/am/src/soc/src/soc/simple/issuer.py", line 1377, in issue_fsm | 18:03 |
octavius | ldst_dec = pdecode2.use_svp64_ldst_dec | 18:04 |
octavius | AttributeError: 'PowerDecode2' object has no attribute 'use_svp64_ldst_dec' | 18:04 |
octavius | This attribute isn't present in openpower/decoder/power_decoder2.py | 18:04 |
octavius | Grep'ing for 'use_svp64_ldst_dec' signal: | 18:04 |
octavius | -The signal occurs within the 'connect_satellite_decoders' method of the NonProductionCore (soc/simple/core.py). | 18:04 |
octavius | -Also in soc/simple/core_data.py, the signal is described as a flag for when to "use alternative LDST decoder" | 18:04 |
octavius | Was the external core with SVP64 generated before? I guess you would need an alternative Load/Store decoder when SVP64 is involved. | 18:09 |
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