openwrt/target/linux/image/generic/lzma-loader/src/Makefile

   1 LOADADDR = 0x80400000           # RAM start + 4M
   2 KERNEL_ENTRY = 0x80001000
   3 RAMSIZE = 0x00100000            # 1MB
   4
   5 CROSS_COMPILE = mips-linux-
   6
   7 .S.s:
   8         $(CPP) $(CFLAGS) $< -o $*.s
   9 .S.o:
  10         $(CC) $(CFLAGS) -c $< -o $*.o
  11 .c.o:
  12         $(CC) $(CFLAGS) -c $< -o $*.o
  13
  14 CC =       $(CROSS_COMPILE)gcc
  15 LD =       $(CROSS_COMPILE)ld
  16 OBJCOPY =  $(CROSS_COMPILE)objcopy
  17 OBJDUMP =  $(CROSS_COMPILE)objdump
  18
  19 CFLAGS = -fno-builtin -Os -G 0 -mno-abicalls -fno-pic -Wall -DRAMSIZE=${RAMSIZE} -DKERNEL_ENTRY=${KERNEL_ENTRY} -D_LZMA_IN_CB
  20 # CFLAGS = -fno-builtin -Os -G 0 -mno-abicalls -fno-pic -Wall -DRAMSIZE=${RAMSIZE}
  21
  22 O_FORMAT = $(shell $(OBJDUMP) -i | head -2 | grep elf32)
  23
  24 # Drop some uninteresting sections in the kernel.
  25 # This is only relevant for ELF kernels but doesn't hurt a.out
  26 drop-sections   = .reginfo .mdebug .comment
  27 strip-flags     = $(addprefix --remove-section=,$(drop-sections))
  28
  29
  30 all : lzma.elf
  31
  32 lzma.lds: lzma.lds.in
  33         sed -e 's,@LOADADDR@,$(LOADADDR),g' $< >$@
  34
  35 kernel.o: vmlinux.lzma lzma.lds
  36         $(LD) -r -b binary --oformat $(O_FORMAT) -o $@ $<
  37
  38 lzma.elf: start.o decompress.o LzmaDecode.o kernel.o
  39         $(LD) -s -Tlzma.lds -o $@ $^
  40
  41 clean:
  42         rm -f *.o lzma.elf