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# Get common makefile stuff (toolchain & system config)
include ../common/makefile

# We'll run the simulation for long enough for the program to finish
SIM_LENGTH = 140000
        
# FPGA Block RAM parameters
BRAM_START = 0xbfc00000
CODE_BRAM_SIZE = 2048
# External RAM parameters (size in words)
XRAM_SIZE = 1024
XRAM_START = 0x00000000 

LFLAGS = -Ttext $(BRAM_START) -Tdata $(XRAM_START) -eentry -I elf32-big

#-- Targets & rules ------------------------------------------------------------

opcodes:
        $(AS) -o opcode_emu.o $(SRC_DIR)/common/opcode_emu.s
        $(AS) -defsym XRAM_BASE=$(XRAM_START) -mips32r2 -o opcodes.o opcodes.s
        $(LD) $(LFLAGS) -Map opcodes.map -s -N -o opcodes.axf opcodes.o opcode_emu.o
        -@$(DUMP) -I elf32-big --disassemble opcodes.axf > opcodes.lst
# Dump only text segment, no .rodata on this program
#       $(COPY) -I elf32-big -j .text -O binary opcodes.axf opcodes.bin
# Dump data segment to file; will be empty but the TB2 template needs it
#       $(COPY) -I elf32-big -j .data -O binary opcodes.axf opcodes.data
        $(COPY) -I elf32-big -O binary opcodes.axf opcodes.bin
        $(COPY) -I elf32-big -j.data -j.bss -O binary opcodes.axf opcodes.data

# Create VHDL file for simulation test bench from TB2 template
sim: opcodes
        $(TO_VHDL) --code opcodes.bin --data opcodes.data --log_trigger=0xbfc00000 \
                --code_size $(CODE_BRAM_SIZE) --data_size $(DATA_BRAM_SIZE) \
                -s $(SIM_LENGTH) -v $(SRC_DIR)\\mips_tb2_template.vhdl \
                -o $(TB_DIR)\\mips_tb2.vhdl -e mips_tb2

        
#-- And now the usual housekeeping stuff ---------------------------------------

.PHONY: clean

clean:
        -$(RM) *.o *.obj *.map *.lst *.hex *.exe *.axf *.code *.data *.bin