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 KERNEL_ENTRY := 0x${shell nm $(KDIR)/linux-$(KERNEL)*/vmlinux | grep kernel_entry | cut -d' ' -f1}
   9 OUTPUT_FORMAT := elf32-tradlittlemips
  10
  11 CFLAGS := -D__KERNEL__ -Wall -Wstrict-prototypes -Wno-trigraphs -Os \
  12         -fno-strict-aliasing -fno-common -fomit-frame-pointer -G 0 -mno-abicalls -fno-pic \
  13         -pipe -mlong-calls -fno-common \
  14         -mabi=32 -march=mips32 -Wa,-32 -Wa,-march=mips32 -Wa,-mips32 -Wa,--trap \
  15         -DLOADADDR=$(LOADADDR)
  16
  17 $(PKG_BUILD_DIR):
  18         mkdir -p $(PKG_BUILD_DIR)
  19
  20 $(PKG_BUILD_DIR)/zimage.script: src/zimage.script.in
  21         sed -e 's/@@OUTPUT_FORMAT@@/$(OUTPUT_FORMAT)/' \
  22             -e 's/@@LOADADDR@@/$(LOADADDR)/' <$< >$@
  23
  24 $(PKG_BUILD_DIR)/ld.script: src/ld.script.in
  25         sed -e 's/@@OUTPUT_FORMAT@@/$(OUTPUT_FORMAT)/' \
  26             -e 's/@@LOADADDR@@/$(LOADADDR)/' <$< >$@
  27
  28 $(PKG_BUILD_DIR)/LzmaDecode.o: src/LzmaDecode.c
  29         $(TARGET_CC) $(CFLAGS) -c -o $@ $<
  30
  31 $(PKG_BUILD_DIR)/loader.o: src/loader.c
  32         $(TARGET_CC) $(CFLAGS) -c -o $@ $<
  33
  34 $(PKG_BUILD_DIR)/srec2bin: src/srec2bin.c
  35         $(HOSTCC) -o $@ $<
  36
  37 $(KDIR)/vmlinux.gz: $(KDIR)/vmlinux
  38         gzip -c -vf9 < $< > $@
  39
  40 $(KDIR)/vmlinux.lzma: $(KDIR)/vmlinux
  41         cat $^ | $(STAGING_DIR)/bin/lzma e -si -so -eos -lc1 -lp2 -pb2 > $@ || (rm -f $@ && false)
  42
  43 $(BIN_DIR)/openwrt-ar7-2.4-kernel.bin: $(KDIR)/vmlinux.lzma compile
  44         $(TARGET_CROSS)ld -T $(PKG_BUILD_DIR)/zimage.script -r -b binary $< -o $(KDIR)/zimage.o
  45         $(TARGET_CROSS)ld -static -G 0 --defsym kernel_entry=$(KERNEL_ENTRY) -T $(PKG_BUILD_DIR)/ld.script \
  46                 $(PKG_BUILD_DIR)/loader.o \
  47                 $(PKG_BUILD_DIR)/LzmaDecode.o \
  48                 $(KDIR)/zimage.o \
  49                 -o $(KDIR)/loader
  50         $(TARGET_CROSS)objcopy -O srec $(KDIR)/loader $(KDIR)/ram_zimage.sre
  51         $(PKG_BUILD_DIR)/srec2bin $(KDIR)/ram_zimage.sre $@
  52
  53 ifeq ($(FS),jffs2-8MB)
  54 ALIGN:=bs=131072 conv=sync
  55 endif
  56 ifeq ($(FS),jffs2-4MB)
  57 ALIGN:=bs=65536 conv=sync
  58 endif
  59
  60 $(BIN_DIR)/openwrt-ar7-$(KERNEL)-$(FS).bin: $(BIN_DIR)/openwrt-ar7-2.4-kernel.bin
  61         dd if=$< $(ALIGN) > $@
  62         cat $(BUILD_DIR)/linux-$(KERNEL)-ar7/root.$(FS) >> $@
  63
  64 define pattern_template
  65 $(BIN_DIR)/openwrt-ar7-$(KERNEL)-$(FS)-$(1).bin: $(BIN_DIR)/openwrt-ar7-$(KERNEL)-$(FS).bin
  66         (dd if=/dev/zero bs=16 count=1; cat $(BIN_DIR)/openwrt-ar7-$(KERNEL)-$(FS).bin) | \
  67                 $(STAGING_DIR)/bin/addpattern -p $(1) -o $(BIN_DIR)/openwrt-ar7-$(KERNEL)-$(FS)-$(1).bin
  68
  69 install: $(BIN_DIR)/openwrt-ar7-$(KERNEL)-$(FS)-$(1).bin
  70 endef
  71
  72 $(eval $(call pattern_template,WA22))
  73 $(eval $(call pattern_template,WAG2))
  74 $(eval $(call pattern_template,WA21))
  75
  76 clean:
  77         rm -rf $(PKG_BUILD_DIR)
  78         rm -f $(BIN_DIR)/openwrt-ar7*
  79
  80 prepare: $(PKG_BUILD_DIR) $(PKG_BUILD_DIR)/zimage.script $(PKG_BUILD_DIR)/ld.script
  81 compile: prepare $(PKG_BUILD_DIR)/loader.o $(PKG_BUILD_DIR)/LzmaDecode.o $(PKG_BUILD_DIR)/srec2bin
  82 install: $(BIN_DIR)/openwrt-ar7-2.4-kernel.bin $(BIN_DIR)/openwrt-ar7-$(KERNEL)-$(FS).bin
  83