hydra_core: add triple_cpu generic

39fb2038 · Tristan Gingold · da84f903 · 39fb2038
Commit 39fb2038 authored May 20, 2022 by Tristan Gingold
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Showing with 49 additions and 9 deletions

hydra_core.vhd hdl/rtl/hydra_core.vhd +49 -9

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--- a/hdl/rtl/hydra_core.vhd
+++ b/hdl/rtl/hydra_core.vhd
@@ -37,6 +37,7 @@ entity hydra_core is
  generic(
    g_IRAM_LOG_SIZE : natural := 12;  --  In bytes
    g_DRAM_LOG_SIZE : natural := 12;
+    g_TRIPLE_CORE   : boolean := True;
    g_SIM_SEU_PERIOD : natural := 0);
  port(
    clk_sys_i   : in  std_logic;
@@ -166,12 +167,44 @@ begin
  dwb_o <= dwb_out;

  cpu_rst2 <= "111" when rst_n_i = '0' or cpu_rst_n_i = '0' else cpu_rst;
-      
-  inst_cpus : entity work.hydra_triple_cpu
+  
+  gen_triple_cpu: if g_TRIPLE_CORE generate
+    inst_cpus : entity work.hydra_triple_cpu
+      port map (
+        clk_i            => clk_sys_i,
+        clk_cpu_i        => clk_cpu_i,
+        cpu_rst_i        => cpu_rst2,
+        im_addr_o        => im_addr,
+        im_rd_o          => im_rd,
+        im_data_i        => im_data,
+        im_valid_i       => im_valid,
+        dm_addr_o        => dm_addr,
+        dm_data_s_o      => dm_data_s,
+        dm_data_l_i      => dm_data_l,
+        dm_data_select_o => dm_data_select,
+        dm_store_o       => dm_store,
+        dm_load_o        => dm_load,
+        dm_load_done_i   => dm_load_done,
+        dm_store_done_i  => dm_store_done,
+
+        cpu_sync_o       => cpu_sync,
+        dm_force_divergence_i => dm_force_divergence,
+        err_cpu_im_o     => err_cpu_im,
+        err_cpu_dm_o     => err_cpu_dm);
+  end generate;
+
+  gen_one_cpu: if not g_TRIPLE_CORE generate
+    inst_cpu : urv_cpu
+    generic map (
+      g_timer_frequency => 0,
+      g_with_hw_debug => 0,
+      g_with_hw_mul => 0,
+      g_with_hw_div => 0
+      )
    port map (
      clk_i            => clk_sys_i,
-      clk_cpu_i        => clk_cpu_i,
-      cpu_rst_i        => cpu_rst2,
+      rst_i            => cpu_rst2(1),
+      irq_i            => '0',
      im_addr_o        => im_addr,
      im_rd_o          => im_rd,
      im_data_i        => im_data,
@@ -184,11 +217,18 @@ begin
      dm_load_o        => dm_load,
      dm_load_done_i   => dm_load_done,
      dm_store_done_i  => dm_store_done,
-
-      cpu_sync_o       => cpu_sync,
-      dm_force_divergence_i => dm_force_divergence,
-      err_cpu_im_o     => err_cpu_im,
-      err_cpu_dm_o     => err_cpu_dm);
+      dbg_force_i      => '0',
+      dbg_enabled_o    => open,
+      dbg_insn_i       => x"0000_0000",
+      dbg_insn_set_i   => '0',
+      dbg_insn_ready_o => open,
+      dbg_mbx_data_i   => x"0000_0000",
+      dbg_mbx_write_i  => '0',
+      dbg_mbx_data_o   => open);
+    cpu_sync <= "111";
+    err_cpu_im <= '0';
+    err_cpu_dm <= '0';
+  end generate;

  --  Add registers on uRV data bus
  process (clk_sys_i)