[hardware] Modify csr sync and handshake in ara

pulp-platform · Sep 16, 2024 · bba668c · bba668c
1 parent 4293233
commit bba668c
Show file tree

Hide file tree

Showing 5 changed files with 251 additions and 310 deletions.
diff --git a/hardware/src/ara.sv b/hardware/src/ara.sv
@@ -112,6 +112,8 @@ module ara import ara_pkg::*; #(
  fpnew_pkg::roundmode_e frm;
  // result information
  writeregflags_t is_writeback;
+ // does the insn modify a spec CSR?
+ logic is_spec_csr;
  } instr_pack_t;
 
  typedef struct packed {

diff --git a/hardware/src/ara_dispatcher.sv b/hardware/src/ara_dispatcher.sv
@@ -308,9 +308,11 @@ module ara_dispatcher import ara_pkg::*; import rvv_pkg::*; #(
  instruction_ready_o = 1'b0;
  core_v_xif_resp_o.result_valid = 1'b0;
 
- x_result = '{
- id : instruction_i.id,
- default : '0
+ x_result = '{
+ id : instruction_i.id,
+ rd : instruction_i.instr[11:7],
+ we : instruction_i.is_writeback,
+ default : '0
  };
 
  acc_resp = '{