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#-- Bring toolchain config parameters from the common makefile -----------------
include ../common/makefile

# We'll run the simulation for long enough to complete the test
SIM_LENGTH = 400000

# FPGA Block RAM parameters
BRAM_START = 0xbfc00000
CODE_BRAM_SIZE = 2048
FLASH_START = 0xb0000000
# External RAM parameters (size in words)
XRAM_SIZE = 1024
XRAM_START = 0x00000000


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

OBJS = memtest.o

#-- Configuration --------------------------------------------------------------

# Set to !=0 to test execution from flash
# (Set to 0 if running on real HW on which you have no initialized FLASH)
EXEC_FLASH = 1

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

#-- Main target -- build code for BRAM and FLASH
memtest:  memtest.code memtest.data flash.bin
        -@# This comment prevents triggering the default rule. Instead, make will
        -@# invoke our rules for the dependencies.

#-- Targets for main code to be run from BRAM

memtest.o: memtest.s
        $(AS) -defsym TEST_CACHE=1 -defsym EXEC_FLASH=$(EXEC_FLASH) \
    -defsym XRAM_BASE=$(XRAM_START) -o memtest.o memtest.s
    
memtest.axf: memtest.o
        $(LD) $(LFLAGS) -Map memtest.map -s -N -o memtest.axf memtest.o
        -@$(DUMP) -I elf32-big --disassemble memtest.axf > memtest.lst

# Dump code and data to separate binaries (data binary will be empty but 
# TB2 needs it anyway)

memtest.code: memtest.axf
        $(COPY) -I elf32-big -j .text -j .rodata -O binary memtest.axf memtest.code
memtest.data: memtest.axf
        $(COPY) -I elf32-big -j .sbss -j .data -j .bss -O binary memtest.axf memtest.data

#-- Targets for code to be run from FLASH 

flash.o: flash.s
        $(AS) -defsym TEST_CACHE=1 -defsym FLASH_BASE=$(FLASH_START) -o flash.o flash.s

flash.axf: flash.o
        $(LD) $(LFLAGS_FLASH) -Map flash.map -s -N -o flash.axf flash.o
        -@$(DUMP) -I elf32-big --disassemble flash.axf > flash.lst

flash.bin: flash.axf
        $(COPY) -I elf32-big -j .text -j .rodata -O binary flash.axf flash.bin

    
    
#-- Targets that build the synthesizable vhdl; meant for direct invocation -----
    
# Create VHDL file for simulation test bench using TB2 template
sim: memtest demo
        $(TO_VHDL) --code memtest.code --data memtest.data --log_trigger=0xbfc00000 \
                --flash flash.bin --flash_size 4096 \
                --code_size $(CODE_BRAM_SIZE) --data_size $(XRAM_SIZE) \
                -s $(SIM_LENGTH) -v $(SRC_DIR)\\mips_tb2_template.vhdl \
                -o $(TB_DIR)\\mips_tb2.vhdl -e mips_tb2
        $(TO_VHDL) --code memtest.code --data memtest.data --log_trigger=0xbfc00000 \
                --flash flash.bin --flash_size 4096 \
                --code_size $(CODE_BRAM_SIZE) --data_size $(XRAM_SIZE) \
                -s $(SIM_LENGTH) -v $(SRC_DIR)/sim_params_template.vhdl \
                -o $(TB_DIR)/sim_params_pkg.vhdl -e mips_tb2


# Create VHDL file for hardware demo
demo: memtest
        $(TO_VHDL) --code memtest.code --data memtest.data --log_trigger=0xb0000000 \
        --code_size $(CODE_BRAM_SIZE) --data_size $(XRAM_SIZE) \
        -v $(SRC_DIR)/code_rom_template.vhdl  -n "Memory test" \
        -o $(DEMO_DIR)/code_rom_pkg.vhdl

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

.PHONY: clean

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