hello_world/Makefile

   1 ARCH = $(shell uname -m)
   2 ifneq ("$(ARCH)", "ppc64")
   3 ifneq ("$(ARCH)", "ppc64le")
   4         CROSS_COMPILE ?= powerpc64le-linux-gnu-
   5 endif
   6 endif
   7
   8 BOOT_INIT_BASE ?= 0xf0000000 # at QSPI address
   9 # BOOT_INIT_BASE ?= 0xff000000   # at ROM hi address (with coldboot firmware)
  10 # BOOT_INIT_BASE ?= 0x0        # start at zero (usual)
  11
  12 CC = $(CROSS_COMPILE)gcc
  13 LD = $(CROSS_COMPILE)ld
  14 OBJCOPY = $(CROSS_COMPILE)objcopy
  15
  16 CFLAGS = -Os -g -Wall -std=c99 -mabi=elfv2 -msoft-float -mno-string \
  17                 -mno-multiple -mno-vsx -mno-altivec -mlittle-endian \
  18                 -fno-stack-protector -mstrict-align -ffreestanding \
  19                 -fdata-sections -ffunction-sections -I../include \
  20             -DBOOT_INIT_BASE=$(BOOT_INIT_BASE)
  21
  22 ASFLAGS = $(CFLAGS)
  23 LDFLAGS = -static -nostdlib -T powerpc.lds --gc-sections
  24
  25 all: hello_world.hex
  26
  27 powerpc.lds: powerpc.lds.S
  28         $(CC) $(CFLAGS) -P -E powerpc.lds.S -o powerpc.lds
  29
  30 console.o: ../lib/console.c
  31         $(CC) $(CPPFLAGS) $(CFLAGS) -c $< -o $@
  32
  33 hello_world.elf: hello_world.o head.o console.o powerpc.lds
  34         $(LD) $(LDFLAGS) -o $@ hello_world.o head.o console.o
  35
  36 hello_world.bin: hello_world.elf
  37         $(OBJCOPY) -O binary $^ $@
  38
  39 hello_world.hex: hello_world.bin
  40         ../scripts/bin2hex.py $^ > $@
  41
  42 clean:
  43         @rm -f *.o hello_world.elf hello_world.bin hello_world.hex
  44 distclean: clean
  45         rm -f *~
  46