#***********************************************************************************************

 #    File        : Makefile

 #    Author        : Lyu Yang

 #    Date          :

 #    Description : Makefile for OpenRISC

 #***********************************************************************************************

 TARGET = main

 CROSS_COMPILE = or1k-elf-

 INCLUDE_DIRS = -I ./

 LIBRARY_DIRS = -L ./

 CC = $(CROSS_COMPILE)gcc

 CFLAGS =  $(INCLUDE_DIRS) -mno-delay -c -msoft-div -msoft-float -msoft-mul -mno-ror -mno-cmov -mno-sext -Os

 CXX = $(CROSS_COMPILE)g++

 CXXFLAGS =  $(INCLUDE_DIRS) -c -mno-delay -msoft-float -msoft-mul -mno-ror -mno-cmov -mno-sext -Os

 AS = $(CROSS_COMPILE)as

 ASFLAGS = -c

 LD = $(CROSS_COMPILE)ld

 LDFLAGS = $(LIBRARY_DIRS) -T./openrisc.lds -Map $(TARGET).map -nostartfiles -nodefaultlibs -nostdlib

 OBJCP = $(CROSS_COMPILE)objcopy

 OBJCPFLAGS = -O binary -j .text -j .rodata -j .data -j .bss

 AR = $(CROSS_COMPILE)ar

 ARFLAGS = cr

 DUMP = $(CROSS_COMPILE)objdump

 DUMPFLAG = --disassemble --syms --all-header

 SIZE = $(CROSS_COMPILE)size

 # Static library files

 OBJS_LIB +=

 # User should list all object files

 OBJS += $(patsubst %.S, %.o, $(wildcard *.S))

 OBJS += $(patsubst %.c, %.o, $(wildcard *.c))

 # Make

 .PHONY: all clean debug

 all: $(TARGET).elf $(TARGET).bin $(TARGET).asm $(TARGET).mif

     $(SIZE) $(TARGET).elf

 %.o: %.S

     $(AS) $(ASFLAGS) $^ -o $@

 %.o: %.c

     $(CC) $(CFLAGS) $^ -o $@

 $(TARGET).elf: $(OBJS)

     $(LD) $(LDFLAGS) $(OBJS_LIB) -o $@ $^

 $(TARGET).asm: $(TARGET).elf

     $(DUMP) $(DUMPFLAG) $(TARGET).elf > $(TARGET).asm

 $(TARGET).bin: $(TARGET).elf

     $(OBJCP) $(OBJCPFLAGS) $< $@

 $(TARGET).mif: $(TARGET).bin

     ./bin2fpga/bin2fpga  $<

 clean:

     rm -rf *.o *.asm *.elf *.bin *.mif *.map *.coe data.txt

 debug:

     $(CROSS_COMPILE)gdb $(TARGET).elf -x gdbinit.txt

 /* Linker script for OpenRISC */

 OUTPUT_FORMAT("elf32-or1k")

 OUTPUT_ARCH(or1k)

 ENTRY(_reset)

 MEMORY

 {

     RAM (rwx) : ORIGIN = 0x0, LENGTH = 0x4000

     DRAM (rwx) : ORIGIN = 0x10000000, LENGTH = 0x10000000

 }

 SECTIONS

 {

     .text :

     {

         _stext = .;

         stext = .;

         *(.text)

         *(.text.*)

         . = ALIGN();

         _etext = .;

         etext = .;

     } > RAM

     .rodata :

     {

         _sdata = .;

         sdata = .;

         . = ALIGN();

         *(.rodata)

         *(.rodata.*)

     } > RAM

     .data :

     {

         *(.sdata)

         *(.data)

         *(.rwdata)

         *(.got.plt) *(.got)

         *(.shdata)

         *(.data.* .gnu.linkonce.d.*)

         . = ALIGN ();

         _edata  =  .;

         edata  =  .;

     } > RAM

     .bss :

     {

         . = ALIGN();

         __bss_start = .;

         *(.sbss .sbss.*)

         *(.bss .bss.*)

         *(COMMON)

         . = ALIGN ();

         __bss_end = .;

     } > RAM

 }

 /* Stack base address */

 __stack_pointer = 0x4000;