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#
# Copyright (C) 2010 OpenWrt.org
#
# This is free software, licensed under the GNU General Public License v2.
# See /LICENSE for more information.
#
RAMSTART = 0x80000000
RAMSIZE = 0x00800000 # 1MB
LOADADDR = 0x80400000 # RAM start + 4M
KERNEL_ENTRY = 0x80002000
CROSS_COMPILE = mipsel-openwrt-linux-
OBJCOPY:= $(CROSS_COMPILE)objcopy -O binary -R .reginfo -R .note -R .comment -R .mdebug -S
CFLAGS := -I./include -fno-builtin -Os -G 0 -ffunction-sections -mno-abicalls -fno-pic -mabi=32 -march=mips32 -Wa,-32 -Wa,-march=mips32 -Wa,-mips32 -Wa,--trap -Wall -DRAMSTART=${RAMSTART} -DRAMSIZE=${RAMSIZE} -DKERNEL_ENTRY=${KERNEL_ENTRY}
.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' $< >$@
kernel.o: vmlinux.lzma lzma.lds
$(LD) -r -b binary --oformat $(O_FORMAT) -o $@ $<
lzma.bin: lzma.elf
$(OBJCOPY) $< $@
lzma.elf: decompress.o stubs.o LzmaDecode.o kernel.o lzma.lds
$(LD) -T lzma.lds -o $@ $^
#-s ^
clean:
rm -f *.o lzma.elf lzma.bin *.tmp *.lds
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