2010-11-06 20:54:20 +02:00
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#
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# Copyright (C) 2010 OpenWrt.org
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#
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# This is free software, licensed under the GNU General Public License v2.
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# See /LICENSE for more information.
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#
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RAMSTART = 0x80000000
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2011-01-27 23:49:56 +02:00
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RAMSIZE = 0x00800000 # 8MB
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2010-11-06 20:54:20 +02:00
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LOADADDR = 0x80400000 # RAM start + 4M
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KERNEL_ENTRY = 0x80002000
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CROSS_COMPILE = mipsel-openwrt-linux-
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OBJCOPY:= $(CROSS_COMPILE)objcopy -O binary -R .reginfo -R .note -R .comment -R .mdebug -S
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CFLAGS := -I./include -fno-builtin -Os -G 0 -ffunction-sections -mno-abicalls -fno-pic -mabi=32 -march=mips32 -Wa,-32 -Wa,-march=mips32 -Wa,-mips32 -Wa,--trap -Wall -DRAMSTART=${RAMSTART} -DRAMSIZE=${RAMSIZE} -DKERNEL_ENTRY=${KERNEL_ENTRY}
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.c.o:
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$(CC) $(CFLAGS) -c $< -o $*.o
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CC = $(CROSS_COMPILE)gcc
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LD = $(CROSS_COMPILE)ld
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OBJDUMP = $(CROSS_COMPILE)objdump
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O_FORMAT = $(shell $(OBJDUMP) -i | head -2 | grep elf32)
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# Drop some uninteresting sections in the kernel.
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# This is only relevant for ELF kernels but doesn't hurt a.out
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drop-sections = .reginfo .mdebug .comment
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strip-flags = $(addprefix --remove-section=,$(drop-sections))
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all : lzma.elf lzma.bin
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lzma.lds: lzma.lds.in
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sed -e 's,@LOADADDR@,$(LOADADDR),g' $< >$@
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kernel.o: vmlinux.lzma lzma.lds
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$(LD) -r -b binary --oformat $(O_FORMAT) -o $@ $<
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lzma.bin: lzma.elf
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$(OBJCOPY) $< $@
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lzma.elf: decompress.o stubs.o LzmaDecode.o kernel.o lzma.lds
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$(LD) -T lzma.lds -o $@ $^
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#-s ^
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clean:
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rm -f *.o lzma.elf lzma.bin *.tmp *.lds
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