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Added support for 'debug_external_interrupt_req'

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New method 'debug_external_interrupt_req' to support emulation of a
debug module starts at P3_Core interface and is plumbed all the way in
to the CSR register MIP as interrupt [14].  The corresponding MIE[14]
is always 1, so it is never masked. Still todo: should not be masked
by MSTATUS interrupt-enables either.  Also expanded
interrupt-detection logic, mcause etc. to extend up to interrupt 14.

Builds in standalone mode, runs ISA tests.

Builds in src_SSITH_P3, generating RTL.
This commit is contained in:
rsnikhil
2019-04-01 12:26:54 -04:00
parent 85b745be9f
commit 113f888d37
346 changed files with 3296935 additions and 282 deletions
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19
src_Core/Debug_Module/Debug_Module.bsv
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@@ -71,6 +71,7 @@ import AXI4_Types :: *;
import Fabric_Defs :: *;
import DM_Common :: *;
import DM_CPU_Req_Rsp :: *;
import DM_Run_Control :: *;
import DM_Abstract_Commands :: *;
import DM_System_Bus :: *;
@@ -100,10 +101,15 @@ interface Debug_Module_IFC;
interface Get #(Bit #(4)) hart0_get_other_req;
// GPR access
interface MemoryClient #(5, XLEN) hart0_gpr_mem_client;
interface Client #(DM_CPU_Req #(5, XLEN), DM_CPU_Rsp #(XLEN)) hart0_gpr_mem_client;
// FPR access
`ifdef ISA_F
interface Client #(DM_CPU_Req #(5, FLEN), DM_CPU_Rsp #(FLEN)) hart0_fpr_mem_client;
`endif
// CSR access
interface MemoryClient #(12, XLEN) hart0_csr_mem_client;
interface Client #(DM_CPU_Req #(12, XLEN), DM_CPU_Rsp #(XLEN)) hart0_csr_mem_client;
// ----------------
// Facing Platform
@@ -267,10 +273,15 @@ module mkDebug_Module (Debug_Module_IFC);
interface Get hart0_get_other_req = dm_run_control.hart0_get_other_req;
// GPR access
interface MemoryClient hart0_gpr_mem_client = dm_abstract_commands.hart0_gpr_mem_client;
interface Client hart0_gpr_mem_client = dm_abstract_commands.hart0_gpr_mem_client;
// FPR access
`ifdef ISA_F
interface Client hart0_fpr_mem_client = dm_abstract_commands.hart0_fpr_mem_client;
`endif
// CSR access
interface MemoryClient hart0_csr_mem_client = dm_abstract_commands.hart0_csr_mem_client;
interface Client hart0_csr_mem_client = dm_abstract_commands.hart0_csr_mem_client;
// ----------------
// Facing Platform