# Makefile for cocotb simulation
# This makefile can be used to run cocotb tests with Icarus Verilog or other simulators

# Defaults
SIM ?= icarus
TOPLEVEL_LANG ?= verilog

# Project paths
REPO_ROOT := $(shell git rev-parse --show-toplevel)
HDL_SRC_DIR := $(REPO_ROOT)/hdl-src
TEST_DIR := $(REPO_ROOT)/tests/cocotb
COMMON_DIR := $(TEST_DIR)/common

# Python paths
export PYTHONPATH := $(REPO_ROOT):$(TEST_DIR):$(PYTHONPATH)

# Simulator options
COMPILE_ARGS += -g2012  # SystemVerilog 2012
EXTRA_ARGS += --trace --trace-structs

# Common sources (interfaces)
VERILOG_SOURCES += $(HDL_SRC_DIR)/apb4_intf.sv
VERILOG_SOURCES += $(HDL_SRC_DIR)/apb3_intf.sv
VERILOG_SOURCES += $(HDL_SRC_DIR)/axi4lite_intf.sv

# Test-specific configuration
# These should be overridden by test-specific makefiles

# Example usage:
# To run APB4 test:
#   make -f Makefile.apb4 test_simple
#
# To run all tests:
#   make -f Makefile.apb4 test
#   make -f Makefile.apb3 test
#   make -f Makefile.axi4lite test

# Include cocotb's make rules to build/run simulation
include $(shell cocotb-config --makefiles)/Makefile.sim