diff options
Diffstat (limited to 'target/linux/generic/image/lzma-loader/src/Makefile')
| -rw-r--r-- | target/linux/generic/image/lzma-loader/src/Makefile | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/target/linux/generic/image/lzma-loader/src/Makefile b/target/linux/generic/image/lzma-loader/src/Makefile new file mode 100644 index 0000000..910172c --- /dev/null +++ b/target/linux/generic/image/lzma-loader/src/Makefile @@ -0,0 +1,68 @@ +# +# Copyright (C) 2006 OpenWrt.org +# +# This is free software, licensed under the GNU General Public License v2. +# See /LICENSE for more information. +# +RAMSTART = 0x80000000 +RAMSIZE = 0x00100000 # 1MB +LOADADDR = 0x80400000 # RAM start + 4M +KERNEL_ENTRY = 0x80001000 +IMAGE_COPY:=0 + +CROSS_COMPILE = mips-linux- + +OBJCOPY:= $(CROSS_COMPILE)objcopy -O binary -R .reginfo -R .note -R .comment -R .mdebug -S +CFLAGS := -fno-builtin -Os -G 0 -ffunction-sections -mno-abicalls -fno-pic -mabi=32 -march=mips32 -Wa,-32 -Wa,-march=mips32 -Wa,-mips32 -Wa,--trap -Wall -DRAMSTART=${RAMSTART} -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.bin + +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 $@ $< + +lzma.bin: lzma.elf + $(OBJCOPY) $< $@ + +ifeq ($(IMAGE_COPY),1) +LOADER_ENTRY ?= $(KERNEL_ENTRY) +lzma.o: decompress.o LzmaDecode.o kernel.o + sed -e 's,@LOADADDR@,$(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 $(O_FORMAT) + +lzma.elf: start.o lzma.o + sed -e 's,@LOADADDR@,$(LOADER_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 lzma.bin *.tmp *.lds |