1 files changed, 57 insertions, 0 deletions
diff --git a/target/image/generic/lzma-loader/src/Makefile b/target/image/generic/lzma-loader/src/Makefile
new file mode 100644
index 000000000..54356889f
--- /dev/null
+++ b/target/image/generic/lzma-loader/src/Makefile
@@ -0,0 +1,57 @@
+LOADADDR = 0x80400000		# RAM start + 4M
+KERNEL_ENTRY = 0x80001000
+RAMSIZE = 0x00100000		# 1MB
+IMAGE_COPY:=0
+
+CROSS_COMPILE = mips-linux-
+
+OBJCOPY:= $(CROSS_COMPILE)objcopy -O binary -R .reginfo -R .note -R .comment -R .mdebug -S
+CFLAGS := -fno-builtin -Os -G 0 -ffunction-sections -mno-abicalls -fno-pic -mabi=32 -march=mips32 -Wa,-32 -Wa,-march=mips32 -Wa,-mips32 -Wa,--trap -Wall -DRAMSIZE=${RAMSIZE} -DKERNEL_ENTRY=${KERNEL_ENTRY} -D_LZMA_IN_CB
+ifeq ($(IMAGE_COPY),1)
+CFLAGS += -DLOADADDR=${LOADADDR} -DIMAGE_COPY=1
+endif
+
+.S.s:
+	$(CPP) $(CFLAGS) $< -o $*.s
+.S.o:
+	$(CC) $(CFLAGS) -c $< -o $*.o
+.c.o:
+	$(CC) $(CFLAGS) -c $< -o $*.o
+
+CC =       $(CROSS_COMPILE)gcc
+LD =       $(CROSS_COMPILE)ld
+OBJDUMP =  $(CROSS_COMPILE)objdump
+
+O_FORMAT = $(shell $(OBJDUMP) -i | head -2 | grep elf32)
+
+# Drop some uninteresting sections in the kernel.
+# This is only relevant for ELF kernels but doesn't hurt a.out
+drop-sections   = .reginfo .mdebug .comment
+strip-flags     = $(addprefix --remove-section=,$(drop-sections))
+
+all : lzma.elf
+
+lzma.lds: lzma.lds.in
+	sed -e 's,@LOADADDR@,$(LOADADDR),g' -e 's,@ENTRY@,_start,g' $< >$@
+
+kernel.o: vmlinux.lzma lzma.lds
+	$(LD) -r -b binary --oformat $(O_FORMAT) -o $@ $<
+
+ifeq ($(IMAGE_COPY),1)
+lzma.o: decompress.o LzmaDecode.o kernel.o
+	sed -e 's,@LOADADDR@,$(LOADADDR),g' -e 's,@ENTRY@,entry,g' lzma.lds.in >lzma-stage2.lds
+	$(LD) -static --no-warn-mismatch -e entry -Tlzma-stage2.lds -o temp-$@ $^
+	$(OBJCOPY) temp-$@ lzma.tmp
+	@echo "SECTIONS { .data : { code_start = .; *(.data) code_stop = .; }}" > lzma-data.lds
+	$(LD) -no-warn-mismatch -T lzma-data.lds -r -o $@ -b binary lzma.tmp --oformat $(O_FORMAT)
+	
+lzma.elf: start.o lzma.o
+	sed -e 's,@LOADADDR@,$(KERNEL_ENTRY),g' lzma-copy.lds.in >lzma-copy.lds
+	$(LD) -s -Tlzma-copy.lds -o $@ $^
+else
+lzma.elf: start.o decompress.o LzmaDecode.o kernel.o
+	$(LD) -s -Tlzma.lds -o $@ $^
+endif
+
+clean:
+	rm -f *.o lzma.elf *.tmp *.lds