diff mbox

[OpenWrt-Devel] ramips: build factory images for Netgear EX2700

Message ID 56C385CB.9070207@gmail.com
State Changes Requested
Headers show

Commit Message

Joseph C. Lehner Feb. 16, 2016, 8:25 p.m. UTC 
This patch adds support for building factory and sysupgrade images
for the Netgear EX2700 that don't require modification of u-boot
environment variables.

Signed-off-by: Joseph C. Lehner <joseph.c.lehner@gmail.com>

---

Comments

John Crispin Feb. 16, 2016, 8:37 p.m. UTC | #1 
Hi,

we do something very similar on some lantiq boards.

On 16/02/2016 21:25, Joseph C. Lehner wrote:
> This patch adds support for building factory and sysupgrade images
> for the Netgear EX2700 that don't require modification of u-boot
> environment variables.
>

could you please briefly describe what,why,how you are doing and ...

> Signed-off-by: Joseph C. Lehner <joseph.c.lehner@gmail.com>
>
> ---
>
> diff --git a/target/linux/ramips/image/Makefile
b/target/linux/ramips/image/Makefile
> index 8bdd76a..68580ad 100644
> --- a/target/linux/ramips/image/Makefile
> +++ b/target/linux/ramips/image/Makefile
> @@ -912,8 +912,65 @@ endif
>  # MT7620A Profiles
>  #

[...]

> +	# Manually create the header of a 0 byte uImage. We can't use
> +	# mkimage because it wont let us use an empty source file.
> +	$(eval fakeroot=$(KDIR)/fakeroot-$(2).uImage)
> +
> +	# ih_magic:
> +	echo -ne '\x27\x05\x19\x56' > $(fakeroot)
> +	# ih_hcrc:
> +	echo -ne '\x22\x6e\x07\xc1' >> $(fakeroot)
> +	# ih_time:
> +	echo -ne '\x00\x00\x00\x00' >> $(fakeroot)
> +	# ih_size:
> +	echo -ne '\x00\x00\x00\x00' >> $(fakeroot)
> +	# ih_load:
> +	echo -ne '\x00\x00\x00\x00' >> $(fakeroot)
> +	# ih_ep:
> +	echo -ne '\x00\x00\x00\x00' >> $(fakeroot)
> +	# ih_dcrc:
> +	echo -ne '\x00\x00\x00\x00' >> $(fakeroot)
> +	# ih_os, ih_arch, ih_type, ih_comp:
> +	echo -ne '\x05\x05\x07\x00' >> $(fakeroot)
> +	# ih_name:
> +	echo -n 'OpenWrt fakeroot' >> $(fakeroot)
> +	# padding:
> +	echo -ne '\x00\x00\x00\x00' >> $(fakeroot)
> +	echo -ne '\x00\x00\x00\x00' >> $(fakeroot)
> +	echo -ne '\x00\x00\x00\x00' >> $(fakeroot)
> +	echo -ne '\x00\x00\x00\x00' >> $(fakeroot)
> +

this is all static data. simply throw a file with the content into
target/linux/ramips/image/ex2700-fake-uImage instead of creating the
file everytime.

John
diff mbox

Patch

diff --git a/target/linux/ramips/image/Makefile b/target/linux/ramips/image/Makefile
index 8bdd76a..68580ad 100644
--- a/target/linux/ramips/image/Makefile
+++ b/target/linux/ramips/image/Makefile
@@ -912,8 +912,65 @@  endif
 # MT7620A Profiles
 #
 
+# $(1): (ignored)
+# $(2): Board name (small caps)
+# $(3): DTS file name without extension
+# $(4): Erase block size
+# $(5): DNI hardware id
+# $(6): Maximum image size
+define BuildFirmware/Netgear/squashfs
+	$(call PatchKernelLzmaDtb,$(2),$(3))
+	$(eval kernelsize=$(shell wc -c < $(KDIR)/vmlinux-$(2).bin.lzma))
+	# Round (kernelsize + 2*64) to erase blocks, avoiding parens
+	$(eval kernelsize=$(shell expr 2 \* 64 + $(kernelsize)))
+	$(eval kernelsize=$(shell expr 1 + $(kernelsize) / $(4)))
+	$(eval kernelsize=$(shell expr $(4) \* $(kernelsize)))
+	dd if=$(KDIR)/vmlinux-$(2).bin.lzma \
+		of=$(KDIR)/vmlinux-$(2).bin.lzma.tmp \
+		bs=$$$$(($(kernelsize)-2*64)) count=1 conv=sync
+	$(call MkImage,lzma,$(KDIR)/vmlinux-$(2).bin.lzma.tmp,$(KDIR)/vmlinux-$(2).uImage)
+
+	# Manually create the header of a 0 byte uImage. We can't use
+	# mkimage because it wont let us use an empty source file.
+	$(eval fakeroot=$(KDIR)/fakeroot-$(2).uImage)
+
+	# ih_magic:
+	echo -ne '\x27\x05\x19\x56' > $(fakeroot)
+	# ih_hcrc:
+	echo -ne '\x22\x6e\x07\xc1' >> $(fakeroot)
+	# ih_time:
+	echo -ne '\x00\x00\x00\x00' >> $(fakeroot)
+	# ih_size:
+	echo -ne '\x00\x00\x00\x00' >> $(fakeroot)
+	# ih_load:
+	echo -ne '\x00\x00\x00\x00' >> $(fakeroot)
+	# ih_ep:
+	echo -ne '\x00\x00\x00\x00' >> $(fakeroot)
+	# ih_dcrc:
+	echo -ne '\x00\x00\x00\x00' >> $(fakeroot)
+	# ih_os, ih_arch, ih_type, ih_comp:
+	echo -ne '\x05\x05\x07\x00' >> $(fakeroot)
+	# ih_name:
+	echo -n 'OpenWrt fakeroot' >> $(fakeroot)
+	# padding:
+	echo -ne '\x00\x00\x00\x00' >> $(fakeroot)
+	echo -ne '\x00\x00\x00\x00' >> $(fakeroot)
+	echo -ne '\x00\x00\x00\x00' >> $(fakeroot)
+	echo -ne '\x00\x00\x00\x00' >> $(fakeroot)
+
+	cat $(fakeroot) >> $(KDIR)/vmlinux-$(2).uImage
+
+	$(call MkImageSysupgrade/squashfs,squashfs,$(2),$(6))
+
+	$(STAGING_DIR_HOST)/bin/mkdniimg \
+		-B $(3) -H $(5) -v OpenWrt \
+		-i $(call imgname,squashfs,$(2))-sysupgrade.bin \
+		-o $(call imgname,squashfs,$(2))-factory.bin
+endef
+
 Image/Build/Profile/E1700=$(call BuildFirmware/UMedia/$(1),$(1),e1700,E1700,0x013326)
-Image/Build/Profile/EX2700=$(call BuildFirmware/Default4M/$(1),$(1),ex2700,EX2700)
+ex2700_mtd_size=3604480
+Image/Build/Profile/EX2700=$(call BuildFirmware/Netgear/$(1),$(1),ex2700,EX2700,65536,29764623+4+0+32+2x2+0,$(ex2700_mtd_size))
 Image/Build/Profile/MT7620a=$(call BuildFirmware/Default8M/$(1),$(1),mt7620a,MT7620a)
 Image/Build/Profile/MT7620a_MT7610e=$(call BuildFirmware/Default8M/$(1),$(1),mt7620a_mt7610e,MT7620a_MT7610e)
 Image/Build/Profile/MT7620a_MT7530=$(call BuildFirmware/Default8M/$(1),$(1),mt7620a_mt7530,MT7620a_MT7530)