ar71xx: add comments for image Makefile.
Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com> Patchwork: http://patchwork.openwrt.org/patch/5075/ Signed-off-by: Gabor Juhos <juhosg@openwrt.org> SVN-Revision: 40464
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Gabor Juhos
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1bce5e8328
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@ -13,6 +13,8 @@ JFFS2_BLOCKSIZE = 64k 128k 256k
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rootfs_type=$(patsubst jffs2-%,jffs2,$(patsubst squashfs-%,squashfs,$(1)))
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# $(1): rootfs type.
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# $(2): board name.
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define imgname
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$(BIN_DIR)/$(IMG_PREFIX)-$(2)-$(call rootfs_type,$(1))
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endef
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@ -41,13 +43,23 @@ endef
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SINGLE_PROFILES:=
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# $(1) : name of image build method to be used, e.g., TPLINK-LZMA, AthLzma.
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# $(2) : name of the build template to be used, e.g. 64k, 64kraw, 128k, etc.
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# $(3) : name of the profile to be defined.
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# $(4) : board name.
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# $(5)~$(7) : arguments for $(mkcmdline)
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# board=$(1) console=$(2),$(3)
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# $(8)~$(12): extra arguments.
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define SingleProfile
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# $(1): action name, e.g. loader, buildkernel, squashfs, etc.
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define Image/Build/Profile/$(3)
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$$(call Image/Build/Template/$(2)/$$(1),$(1),$(4),$$(call mkcmdline,$(5),$(6),$(7)),$(8),$(9),$(10),$(11),$(12))
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endef
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SINGLE_PROFILES += $(3)
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endef
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# $(1), name of the MultiProfile to be added.
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# $(2), name of Profiles to be included in the MultiProfile.
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define MultiProfile
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define Image/Build/Profile/$(1)
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$(foreach p,$(2),
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@ -62,6 +74,9 @@ KDIR_TMP:=$(KDIR)/tmp
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VMLINUX:=$(BIN_DIR)/$(IMG_PREFIX)-vmlinux
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UIMAGE:=$(BIN_DIR)/$(IMG_PREFIX)-uImage
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# $(1): input file.
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# $(2): output file.
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# $(3): extra arguments for lzma.
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define CompressLzma
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$(STAGING_DIR_HOST)/bin/lzma e $(1) -lc1 -lp2 -pb2 $(3) $(2)
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endef
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@ -76,6 +91,10 @@ define PatchKernel/initramfs
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cp $(KDIR_TMP)/vmlinux-initramfs-$(1) $(call imgname,initramfs,$(1)).bin
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endef
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# $(1): board name.
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# $(2): kernel command line.
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# $(3): extra argumetns for lzma.
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# $(4): name suffix, e.g. "-initramfs".
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define PatchKernelLzma
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cp $(KDIR)/vmlinux$(4) $(KDIR_TMP)/vmlinux$(4)-$(1)
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$(STAGING_DIR_HOST)/bin/patch-cmdline $(KDIR_TMP)/vmlinux$(4)-$(1) "$(strip $(2))"
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@ -89,12 +108,21 @@ define PatchKernelGzip
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endef
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ifneq ($(SUBTARGET),mikrotik)
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# $(1): compression method of the data.
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# $(2): extra arguments.
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# $(3): input data file.
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# $(4): output file.
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define MkuImage
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mkimage -A mips -O linux -T kernel -a 0x80060000 -C $(1) $(2) \
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-e 0x80060000 -n 'MIPS OpenWrt Linux-$(LINUX_VERSION)' \
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-d $(3) $(4)
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endef
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# $(1): board name.
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# $(2): kernel command line.
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# $(3): extra arguments for lzma.
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# $(4): name suffix, e.g. "-initramfs".
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# $(5): extra arguments for mkimage.
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define MkuImageLzma
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$(call PatchKernelLzma,$(1),$(2),$(3),$(4))
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$(call MkuImage,lzma,$(5),$(KDIR_TMP)/vmlinux$(4)-$(1).bin.lzma,$(KDIR_TMP)/vmlinux$(4)-$(1).uImage)
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@ -120,7 +148,12 @@ define MkuImageOKLI
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endef
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endif
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# $(1): name of the 1st file.
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# $(3): name of the 2nd file.
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# $(5): name of the output file.
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# $(6): padding size.
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define CatFiles
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# $(4): size limit of the output file.
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if [ $(2) -eq 0 ]; then \
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filename="$(3)"; fstype=$$$${filename##*\.}; \
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case "$$$${fstype}" in \
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@ -141,6 +174,8 @@ define CatFiles
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echo "Warning: $(5) is too big (> $(4) bytes)" >&2; \
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rm -f $(5); \
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fi; \
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# $(2): size limit of the 1st file.
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# $(4): size limit of the 2nd file.
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else if [ $(2) -gt 262144 ]; then \
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if [ `stat -c%s "$(1)"` -gt $(2) ]; then \
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echo "Warning: $(1) is too big (> $(2) bytes)" >&2; \
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@ -149,6 +184,8 @@ define CatFiles
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else \
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( dd if=$(1) bs=$(2) conv=sync; dd if=$(3) ) > $(5); \
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fi; fi; \
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# $(2): padding size for the 2nd file.
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# $(4): size limit of the output file.
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else \
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( dd if=$(1) bs=$(2) conv=sync; dd if=$(3) ) > $(5); \
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if [ `stat -c%s $(5)` -gt $(4) ]; then \
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@ -158,6 +195,11 @@ define CatFiles
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fi; fi
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endef
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# $(1): rootfs type.
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# $(2): board name.
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# $(3): kernel image size limit.
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# $(4): rootfs image size limit.
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# $(5): padding argument for padjffs2.
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Sysupgrade/KR=$(call CatFiles,$(2),$(3),$(KDIR)/root.$(1),$(4),$(call sysupname,$(1),$(5)))
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Sysupgrade/KRuImage=$(call CatFiles,$(KDIR_TMP)/vmlinux-$(2).uImage,$(3),$(KDIR)/root.$(1),$(4),$(call sysupname,$(1),$(2)),$(5))
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Sysupgrade/RKuImage=$(call CatFiles,$(KDIR)/root.$(1),$(4),$(KDIR_TMP)/vmlinux-$(2).uImage,$(3),$(call sysupname,$(1),$(2)))
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@ -875,7 +917,14 @@ define Jffs2Template
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endef
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endef
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# $(1): template name to be defined.
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# $(2): squashfs suffix to be used.
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# $(3): jffs2 suffix to be used.
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define BuildTemplate
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# $(1) : name of build method.
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# $(2) : board name.
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# $(3) : kernel command line.
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# $(4)~$(8): extra arguments.
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define Image/Build/Template/$(1)/initramfs
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$$(call Image/Build/$$(1)/initramfs,initramfs,$$(2),$$(3),$$(4),$$(5),$$(6),$$(7),$$(8))
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endef
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@ -1162,6 +1211,7 @@ endif
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$(call Image/Build/Profile/$(if $(CONFIG_IB),Default,$(IMAGE_PROFILE)),loader)
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endef
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# $(1): filesystem type.
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define Image/Build
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$(call Image/Build/$(call rootfs_type,$(1)),$(1))
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$(call Image/Build/Profile/$(IMAGE_PROFILE),$(1))
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