[hw, rv_core_ibex] Enable hardware breakpoints

This change enables hardware breakpoints, which allows the usage of
hbreak in GDB.

Fixes #574

Signed-off-by: Silvestrs Timofejevs <silvestrst@lowrisc.org>

hw/ip/rv_core_ibex/rtl/rv_core_ibex.sv

diff --git a/hw/ip/rv_core_ibex/rtl/rv_core_ibex.sv b/hw/ip/rv_core_ibex/rtl/rv_core_ibex.sv
index 0022dcc..90edc6a 100644
--- a/hw/ip/rv_core_ibex/rtl/rv_core_ibex.sv
+++ b/hw/ip/rv_core_ibex/rtl/rv_core_ibex.sv
@@ -16,6 +16,7 @@
   parameter int unsigned MHPMCounterWidth = 40,
   parameter bit          RV32E            = 0,
   parameter bit          RV32M            = 1,
+  parameter bit          DbgTriggerEn     = 1'b1,
   parameter int unsigned DmHaltAddr       = 32'h1A110800,
   parameter int unsigned DmExceptionAddr  = 32'h1A110808,
   parameter bit          PipeLine         = 0
@@ -116,6 +117,7 @@
      .MHPMCounterWidth ( MHPMCounterWidth  ),
      .RV32E            ( RV32E             ),
      .RV32M            ( RV32M             ),
+     .DbgTriggerEn     ( DbgTriggerEn      ),
      .DmHaltAddr       ( DmHaltAddr        ),
      .DmExceptionAddr  ( DmExceptionAddr   )
   ) u_core (

hw/top_earlgrey/data/top_earlgrey.sv.tpl

diff --git a/hw/top_earlgrey/data/top_earlgrey.sv.tpl b/hw/top_earlgrey/data/top_earlgrey.sv.tpl
index 3db8590..4e1b84e 100644
--- a/hw/top_earlgrey/data/top_earlgrey.sv.tpl
+++ b/hw/top_earlgrey/data/top_earlgrey.sv.tpl
@@ -242,6 +242,7 @@
     .MHPMCounterWidth    (40),
     .RV32E               (0),
     .RV32M               (1),
+    .DbgTriggerEn        (1),
     .DmHaltAddr          (ADDR_SPACE_DEBUG_MEM + dm::HaltAddress),
     .DmExceptionAddr     (ADDR_SPACE_DEBUG_MEM + dm::ExceptionAddress),
     .PipeLine            (IbexPipeLine)

hw/top_earlgrey/rtl/autogen/top_earlgrey.sv

diff --git a/hw/top_earlgrey/rtl/autogen/top_earlgrey.sv b/hw/top_earlgrey/rtl/autogen/top_earlgrey.sv
index ab17a23..bf931c7 100644
--- a/hw/top_earlgrey/rtl/autogen/top_earlgrey.sv
+++ b/hw/top_earlgrey/rtl/autogen/top_earlgrey.sv
@@ -273,6 +273,7 @@
     .MHPMCounterWidth    (40),
     .RV32E               (0),
     .RV32M               (1),
+    .DbgTriggerEn        (1),
     .DmHaltAddr          (ADDR_SPACE_DEBUG_MEM + dm::HaltAddress),
     .DmExceptionAddr     (ADDR_SPACE_DEBUG_MEM + dm::ExceptionAddress),
     .PipeLine            (IbexPipeLine)