target/linux/image/ar7/Makefile

   1 include $(TOPDIR)/rules.mk
   2
   3 KDIR:=$(BUILD_DIR)/linux-$(KERNEL)-ar7
   4
   5 PKG_BUILD_DIR:=$(BUILD_DIR)/ar7loader
   6
   7 LOADADDR := 0x94020000
   8 OUTPUT_FORMAT := elf32-tradlittlemips
   9
  10 CFLAGS := -D__KERNEL__ -Wall -Wstrict-prototypes -Wno-trigraphs -Os \
  11         -fno-strict-aliasing -fno-common -fomit-frame-pointer -G 0 -mno-abicalls -fno-pic \
  12         -pipe -mlong-calls -fno-common \
  13         -mabi=32 -march=mips32 -Wa,-32 -Wa,-march=mips32 -Wa,-mips32 -Wa,--trap \
  14
  15
  16 $(PKG_BUILD_DIR):
  17         mkdir -p $(PKG_BUILD_DIR)
  18
  19 $(PKG_BUILD_DIR)/zimage.script: src/zimage.script.in
  20         sed -e 's/@@OUTPUT_FORMAT@@/$(OUTPUT_FORMAT)/' \
  21             -e 's/@@LOADADDR@@/$(LOADADDR)/' <$< >$@
  22
  23 $(PKG_BUILD_DIR)/ld.script: src/ld.script.in
  24         sed -e 's/@@OUTPUT_FORMAT@@/$(OUTPUT_FORMAT)/' \
  25             -e 's/@@LOADADDR@@/$(LOADADDR)/' <$< >$@
  26
  27 $(PKG_BUILD_DIR)/loader.o: src/loader.c
  28         $(TARGET_CC) $(CFLAGS) -c -o $@ $<
  29
  30 $(PKG_BUILD_DIR)/srec2bin: src/srec2bin.c
  31         $(HOSTCC) -o $@ $<
  32
  33 $(KDIR)/vmlinux.gz: $(KDIR)/vmlinux
  34         gzip -c -vf9 < $< > $@
  35
  36 $(BIN_DIR)/openwrt-ar7-zimage.bin: $(KDIR)/vmlinux.gz compile
  37         $(TARGET_CROSS)ld -T $(PKG_BUILD_DIR)/zimage.script -r -b binary $< -o $(KDIR)/zimage.o
  38         $(TARGET_CROSS)ld -static -G 0 -no-warn-mismatch -R $(KDIR)/linux-$(KERNEL)*/vmlinux -T $(PKG_BUILD_DIR)/ld.script \
  39                 $(PKG_BUILD_DIR)/loader.o \
  40                 $(KDIR)/zimage.o \
  41                 -o $(KDIR)/loader
  42         $(TARGET_CROSS)objcopy -O srec $(KDIR)/loader $(KDIR)/ram_zimage.sre
  43         $(PKG_BUILD_DIR)/srec2bin $(KDIR)/ram_zimage.sre $@
  44
  45 clean:
  46         rm -rf $(PKG_BUILD_DIR)
  47 prepare: $(PKG_BUILD_DIR) $(PKG_BUILD_DIR)/zimage.script $(PKG_BUILD_DIR)/ld.script
  48 compile: prepare $(PKG_BUILD_DIR)/loader.o $(PKG_BUILD_DIR)/srec2bin
  49 install: $(BIN_DIR)/openwrt-ar7-zimage.bin
  50