[Open SoC Debug] Queries Regarding GSoC and Open SoC

Anant Sharma anant16129 at iiitd.ac.in
Mon Mar 12 07:12:22 CET 2018


‚Äč

Anant Sharma,
2016129,
BTech - ECE,
IIIT Delhi,

Ph: 9718827023

On Mon, Mar 12, 2018 at 11:37 AM, Anant Sharma <anant16129 at iiitd.ac.in>
wrote:

> So here is what the problem is, the ports i mentioned above are
> instantiated to
> mor1kx as the parameters of the 'du_'s you mentioned and given is a
> sceenshot
> that tells me that I am receiving nothing in those parameters. I know the
> changes
> I have to make, but I need to know the current program counter to set
> breakpoints
> right?
>
> >> input         dbg_stall_i, // External Stall Input
> >> input         dbg_ewt_i, // External Watchpoint Trigger Input
> >> output [3:0]  dbg_lss_o, // External Load/Store Unit Status
> >> output [1:0]  dbg_is_o, // External Insn Fetch Status
> >> output [10:0] dbg_wp_o, // Watchpoints Outputs
> >> output        dbg_bp_o, // Breakpoint Output
> >> input         dbg_stb_i, // External Address/Data Strobe
> >> input         dbg_we_i, // External Write Enable
> >> input [31:0]  dbg_adr_i, // External Address Input
> >> input [31:0]  dbg_dat_i, // External Data Input
> >> output [31:0] dbg_dat_o, // External Data Output
> >> output        dbg_ack_o, // External Data Acknowledge (not WB
> compatible)
> >
> >
> > These signals are the read/write ports for the debug registers.
>
> Well as gtkwave suggests, these ports do not receive any information
> throughout
> the execution of the program. That is the part I was confused about in my
> previous
> email since I wasn't able to receive any data from anywhere.
>
> Thanks,
> Anant Sharma
>
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