| 1 | # |
| 2 | # Copyright (C) 2010 OpenWrt.org |
| 3 | # |
| 4 | # This is free software, licensed under the GNU General Public License v2. |
| 5 | # See /LICENSE for more information. |
| 6 | # |
| 7 | RAMSTART = 0x80000000 |
| 8 | RAMSIZE = 0x00800000 # 8MB |
| 9 | LOADADDR = 0x80400000 # RAM start + 4M |
| 10 | KERNEL_ENTRY = 0x80002000 |
| 11 | |
| 12 | CROSS_COMPILE = mipsel-openwrt-linux- |
| 13 | |
| 14 | OBJCOPY:= $(CROSS_COMPILE)objcopy -O binary -R .reginfo -R .note -R .comment -R .mdebug -S |
| 15 | CFLAGS := -I./include -fno-builtin -Os -G 0 -ffunction-sections -mno-abicalls -fno-pic -mabi=32 -march=mips32 -Wa,-32 -Wa,-march=mips32 -Wa,-mips32 -Wa,--trap -Wall -DRAMSTART=${RAMSTART} -DRAMSIZE=${RAMSIZE} -DKERNEL_ENTRY=${KERNEL_ENTRY} |
| 16 | |
| 17 | .c.o: |
| 18 | $(CC) $(CFLAGS) -c $< -o $*.o |
| 19 | |
| 20 | CC = $(CROSS_COMPILE)gcc |
| 21 | LD = $(CROSS_COMPILE)ld |
| 22 | OBJDUMP = $(CROSS_COMPILE)objdump |
| 23 | |
| 24 | O_FORMAT = $(shell $(OBJDUMP) -i | head -2 | grep elf32) |
| 25 | |
| 26 | # Drop some uninteresting sections in the kernel. |
| 27 | # This is only relevant for ELF kernels but doesn't hurt a.out |
| 28 | drop-sections = .reginfo .mdebug .comment |
| 29 | strip-flags = $(addprefix --remove-section=,$(drop-sections)) |
| 30 | |
| 31 | all : lzma.elf lzma.bin |
| 32 | |
| 33 | lzma.lds: lzma.lds.in |
| 34 | sed -e 's,@LOADADDR@,$(LOADADDR),g' $< >$@ |
| 35 | |
| 36 | kernel.o: vmlinux.lzma lzma.lds |
| 37 | $(LD) -r -b binary --oformat $(O_FORMAT) -o $@ $< |
| 38 | |
| 39 | lzma.bin: lzma.elf |
| 40 | $(OBJCOPY) $< $@ |
| 41 | |
| 42 | lzma.elf: decompress.o stubs.o LzmaDecode.o kernel.o lzma.lds |
| 43 | $(LD) -T lzma.lds -o $@ $^ |
| 44 | #-s ^ |
| 45 | |
| 46 | clean: |
| 47 | rm -f *.o lzma.elf lzma.bin *.tmp *.lds |
| 48 | |
