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# The CC_X86 is for compiling tools on your PC.
# The GCC_MIPS is for compiling code on the target.
# Convert_bin changes test.axf into code.txt which is used by the VHDL.
# Convert_bin == "objcopy -I elf32-big -O binary test.axf test.bin"


ifeq ($(LANG),)

# Customize for Windows
# The MIPS gcc compiler must use the cygwin1.dll that came with the compiler.
CC_X86 = cl /O1 /nologo
CP = copy
RM = del
DWIN32 = -DWIN32
BIN_MIPS = ..\gccmips_elf
VHDL_DIR = ..\vhdl
LINUX_PWD =
GCC_MIPS  = $(BIN_MIPS)\gcc $(CFLAGS)
AS_MIPS   = $(BIN_MIPS)\as
LD_MIPS   = $(BIN_MIPS)\ld
DUMP_MIPS = $(BIN_MIPS)\objdump
CONVERT_BIN = $(LINUX_PWD)convert_bin.exe

else

# Customized for Linux
# See http://www.opencores.com/projects.cgi/web/mips/linux_tools.htm
CC_X86 = gcc -Wall -O -g
CP = cp
RM = rm -rf 
DWIN32 =
BIN_MIPS = 
VHDL_DIR = ../vhdl
LINUX_PWD = ./
GCC_MIPS  = $(BIN_MIPS)mips-elf-gcc $(CFLAGS)
AS_MIPS   = $(BIN_MIPS)mips-elf-as
LD_MIPS   = $(BIN_MIPS)mips-elf-ld
DUMP_MIPS = $(BIN_MIPS)mips-elf-objdump
CONVERT_BIN = $(LINUX_PWD)convert_bin.exe
#CONVERT_BIN = $(BIN_MIPS)mips-elf-objcopy -I elf32-big -O binary test.axf test.bin

endif

CFLAGS = -O2 -Wall -c -s 

all: convert_bin.exe tracehex.exe bintohex.exe ram_image.exe
        @echo make targets = count, opcodes, pi, test, run, tohex, \
        bootldr, toimage, etermip
        
clean:
        -$(RM) *.o *.obj *.map *.lst *.hex *.txt *.exe *.axf

#Same as "objcopy -I elf32-big -O binary test.axf test.bin"
convert_bin.exe: convert.c
        @$(CC_X86) -o convert_bin.exe convert.c

convert_le.exe: convert.c
        @$(CC_X86) -DLITTLE_ENDIAN -o convert_le.exe convert.c

mlite.exe: mlite.c
        @$(CC_X86) -o mlite.exe mlite.c $(DWIN32)

tracehex.exe: tracehex.c
        @$(CC_X86) -o tracehex.exe tracehex.c

bintohex.exe: bintohex.c
        @$(CC_X86) -o bintohex.exe bintohex.c

ram_image.exe: ram_image.c
        @$(CC_X86) -o ram_image.exe ram_image.c

# Terminal program that will download a new image and supports Ethernet
# traffic over UART.  Get wpcap.lib from http://www.winpcap.org/.
# Requires Windows OS
# For Linux, use any serial port program at 57600 baud 8-bits;1-stop bit
etermip: etermip.c
        -@$(CC_X86) -o etermip.exe etermip.c wpcap.lib
        @echo Get wpcap.lib from http://www.winpcap.org/

nomult.exe: nomult.c
        -@$(CC_X86) -o nomult.exe nomult.c

download: etermip
        @echo Reset board before downloading code
        etermip

opcodes: 
        $(AS_MIPS) -o opcodes.o opcodes.asm
        $(LD_MIPS) -Ttext 0 -eentry -Map test.map -s -N -o test.axf opcodes.o
        -@$(DUMP_MIPS) --disassemble test.axf > test.lst
        $(CONVERT_BIN)
        $(CP) code.txt $(VHDL_DIR)

opcodes2: 
        $(AS_MIPS) -o opcodes.o opcodes.asm
        $(LD_MIPS) -Ttext 0x10000000 -eentry -Map test.map -s -N -o test.axf opcodes.o
        -@$(DUMP_MIPS) --disassemble test.axf > test.lst
        $(CONVERT_BIN)
        $(CP) code.txt $(VHDL_DIR)

test: 
        $(AS_MIPS) -o boot.o boot.asm
        $(GCC_MIPS) test.c
        $(GCC_MIPS) no_os.c
        $(LD_MIPS) -Ttext 0 -eentry -Map test.map -s -N -o test.axf \
                boot.o test.o no_os.o
        -@$(DUMP_MIPS) --disassemble test.axf > test.lst
        $(CONVERT_BIN)
        $(CP) code.txt $(VHDL_DIR)

count: 
        $(AS_MIPS) -o boot.o boot.asm
        $(GCC_MIPS) count.c
        $(GCC_MIPS) no_os.c 
        $(LD_MIPS) -Ttext 0 -eentry -Map test.map -s -N -o test.axf \
                boot.o count.o no_os.o 
        -$(DUMP_MIPS) --disassemble test.axf > test.lst
        $(CONVERT_BIN)
        $(CP) code.txt $(VHDL_DIR)

count_le: 
        $(AS_MIPS) -EL -o boot.o boot.asm
        $(GCC_MIPS) -EL count.c
        $(GCC_MIPS) -EL no_os.c 
        $(LD_MIPS) -EL -Ttext 0 -eentry -Map test.map -s -N -o test.axf \
                boot.o count.o no_os.o 
        -$(DUMP_MIPS) --disassemble test.axf > test.lst
        $(CONVERT_BIN)
        $(CP) code.txt $(VHDL_DIR)

count2:
        $(AS_MIPS) -o boot.o boot.asm
        $(GCC_MIPS) count.c
        $(GCC_MIPS) no_os.c
        $(LD_MIPS) -Ttext 0x10000000 -eentry -Map test.map -s -N -o test.axf \
                boot.o count.o no_os.o
        -$(DUMP_MIPS) --disassemble test.axf > test.lst
        $(CONVERT_BIN)
        $(CP) code.txt $(VHDL_DIR)

count3:
        $(AS_MIPS) -o boot.o boot.asm
        $(GCC_MIPS) count.c
        $(GCC_MIPS) no_os.c
        $(LD_MIPS) -Ttext 0x1000 -eentry -Map test.map -s -N -o test.axf \
                boot.o count.o no_os.o
        -$(DUMP_MIPS) --disassemble test.axf > test.lst
        $(CONVERT_BIN)
        $(CP) code.txt $(VHDL_DIR)

count5: nomult.exe
        $(AS_MIPS) -o boot.o boot.asm
        $(AS_MIPS) -o mult_sim.o mult_sim.asm
        $(GCC_MIPS) count.c
        $(GCC_MIPS) no_os.c
        $(LD_MIPS) -Ttext 0x10000000 -eentry -Map test.map -s -N -o test.axf \
                boot.o mult_sim.o count.o no_os.o
        -$(DUMP_MIPS) --disassemble test.axf > test.lst
        $(CP) test.axf test_old.axf
        nomult test.axf test.lst test.map
        -$(DUMP_MIPS) --disassemble test.axf > test2.lst
        $(CONVERT_BIN)
        $(CP) code.txt $(VHDL_DIR)

pi: 
        $(AS_MIPS) -o boot.o boot.asm
        $(GCC_MIPS) pi.c
        $(LD_MIPS) -Ttext 0 -eentry -Map test.map -s -N -o test.axf \
                boot.o pi.o 
        @$(DUMP_MIPS) --disassemble test.axf > test.lst
        $(CONVERT_BIN)
        $(CP) code.txt $(VHDL_DIR)

pi2:
        $(AS_MIPS) -o boot.o boot.asm
        $(GCC_MIPS) pi.c
        $(LD_MIPS) -Ttext 0x10000000 -eentry -Map test.map -s -N -o test.axf \
                boot.o pi.o 
        @$(DUMP_MIPS) --disassemble test.axf > test.lst
        $(CONVERT_BIN)
        $(CP) code.txt $(VHDL_DIR)

pi5: nomult.exe
        $(AS_MIPS) -o boot.o boot.asm
        $(AS_MIPS) -o mult_sim.o mult_sim.asm
        $(GCC_MIPS) pi.c
        $(LD_MIPS) -Ttext 0x0 -eentry -Map test.map -s -N -o test.axf \
                boot.o mult_sim.o pi.o 
        @$(DUMP_MIPS) --disassemble test.axf > test.lst
        nomult test.axf test.lst test.map
        @$(DUMP_MIPS) --disassemble test.axf > test2.lst
        $(CONVERT_BIN)
        $(CP) code.txt $(VHDL_DIR)

ddr_test:
        $(AS_MIPS) -o boot.o boot.asm
        $(GCC_MIPS) ddr_init.c -DDDR_TEST_MAIN
        $(GCC_MIPS) no_os.c
        $(LD_MIPS) -Ttext 0x0 -eentry -Map test.map -s -N -o test.axf \
                boot.o ddr_init.o no_os.o
        @$(DUMP_MIPS) --disassemble test.axf > test.lst
        $(CONVERT_BIN)
        $(CP) code.txt $(VHDL_DIR)

memtest:
        $(AS_MIPS) -o boot.o boot.asm
        $(GCC_MIPS) memtest.c
        $(LD_MIPS) -Ttext 0x1000 -eentry -o test.axf boot.o memtest.o
        $(CONVERT_BIN)
        
memtest2:
        $(AS_MIPS) -o boot.o boot.asm
        $(GCC_MIPS) -DINIT_DDR memtest.c
        $(GCC_MIPS) ddr_init.c
        $(LD_MIPS) -Ttext 0x0 -eentry -o test.axf boot.o memtest.o ddr_init.o
        $(CONVERT_BIN)

memtest3:
        $(AS_MIPS) -o boot.o boot.asm
        $(GCC_MIPS) memtest.c
        $(LD_MIPS) -Ttext 0x10000000 -eentry -o test.axf boot.o memtest.o
        $(CONVERT_BIN)

bootldr:
        $(AS_MIPS) -o boot.o boot.asm
        $(GCC_MIPS) bootldr.c
        $(GCC_MIPS) no_os.c
        $(GCC_MIPS) -DDLL_DISABLE ddr_init.c
        $(LD_MIPS) -Ttext 0 -eentry -Map test.map -s -N -o test.axf \
                boot.o bootldr.o no_os.o ddr_init.o
        @$(DUMP_MIPS) --disassemble test.axf > test.lst
        $(CONVERT_BIN)
        $(CP) code.txt $(VHDL_DIR)
        @echo Next do "make toimage" for Xilinx or "make tohex" for Altera.

bootldr2:
        $(AS_MIPS) -o boot.o boot.asm
        $(GCC_MIPS) bootldr.c
        $(GCC_MIPS) no_os.c
        $(GCC_MIPS) -DDLL_DISABLE ddr_init.c
        $(LD_MIPS) -Ttext 0x1000 -eentry -Map test.map -s -N -o test.axf \
                boot.o bootldr.o no_os.o ddr_init.o
        @$(DUMP_MIPS) --disassemble test.axf > test.lst
        $(CONVERT_BIN)
        $(CP) code.txt $(VHDL_DIR)

bootldr_little_endian: convert_le.exe
        $(AS_MIPS) -EL -o boot.o boot.asm
        $(GCC_MIPS) -EL bootldr.c
        $(GCC_MIPS) -EL no_os.c
        $(GCC_MIPS) -EL ddr_init.c
        $(LD_MIPS) -EL -Ttext 0 -eentry -Map test.map -s -N -o test.axf \
                boot.o bootldr.o no_os.o ddr_init.o
        @$(DUMP_MIPS) --disassemble test.axf > test.lst
        $(LINUX_PWD)convert_le.exe
        $(CP) code.txt $(VHDL_DIR)

# Run a MIPS opcode simulator
run: mlite.exe
        @$(LINUX_PWD)mlite.exe test.bin 

run_little_endian: mlite.exe
        @$(LINUX_PWD)mlite.exe test.bin L

disassemble: mlite.exe
        $(LINUX_PWD)mlite.exe test.bin BD > test.txt

# Used by Altera FPGAs for ram image
tohex: bintohex.exe
        $(LINUX_PWD)bintohex.exe test.bin
        $(CP) code*.hex $(VHDL_DIR)

# Used by Xilinx FPGAs for ram image
toimage:
        $(LINUX_PWD)ram_image.exe ../vhdl/ram_xilinx.vhd ../vhdl/code.txt ../vhdl/ram_image.vhd