Add CPUID register

1 files changed, 27 insertions, 0 deletions

diff --git a/rtl/core/cp15/cp15.sv b/rtl/core/cp15/cp15.sv
index b31ccb7..3855e13 100644
--- a/rtl/core/cp15/cp15.sv
+++ b/rtl/core/cp15/cp15.sv
@@ -1,4 +1,5 @@
 `include "core/uarch.sv"
+`include "core/cp15/map.sv"
 
 module core_cp15
 (
@@ -10,4 +11,30 @@ module core_cp15
 	output word          read
 );
 
+	logic load;
+	reg_num crm;
+	cp_opcode op1, op2;
+
+	assign load = dec.load;
+	assign crm = dec.crm;
+	assign op1 = dec.op1;
+	assign op2 = dec.op2;
+
+	word read_cpuid;
+
+	core_cp15_cpuid cpuid
+	(
+		.read(read_cpuid),
+		.*
+	);
+
+	always_comb
+		unique case(dec.crn)
+			`CP15_CRN_CPUID:
+				read = read_cpuid;
+
+			default:
+				read = {$bits(read){1'bx}};
+		endcase
+
 endmodule