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TP-Link and ASUS OnHub devices are very similar, sharing many of the same characteristics and much of their Device Tree. They both run a version of ChromeOS for their factory firmware, and so installation instructions look very similar to Google Wifi [1]. Things I've tested, and are working: * Ethernet * WiFi (2.4 and 5 GHz) * LEDs * USB * eMMC * Serial console (if you wire it up yourself) * 2x CPU * Speaker == Installation instructions summary == 1. Flash *-factory.bin to a USB drive (e.g., with `dd`) 2. Insert USB drive, to boot OpenWrt from USB 3. Copy the same *-factory.bin over to device, and flash it to eMMC to make OpenWrt permanent == Developer mode, booting from USB (Step 2) == To enter Developer Mode and boot OpenWrt from a USB stick: 1. Unplug power 2. Gain access to the "developer switch" through the bottom of the device 3. Hold down the "reset switch" (near the USB port / power plug) 4. Plug power back in 5. The LED on the device should turn white, then blink orange, then red. Release the reset switch. 6. Insert USB drive with OpenWrt factory.bin 7. Press the hidden developer switch under the device to boot to USB; you should see some activity lights (if you have any) on your USB drive 8. Depending on your configuration, the router's LED(s) should come on. You're now running OpenWrt off a USB stick. These instructions are derived from: https://www.exploitee.rs/index.php/Rooting_The_Google_OnHub#Enabling_%22Developer_Mode%22_on_the_OnHub https://www.exploitee.rs/index.php/Asus_OnHub#Enabling_%22Developer_Mode%22_on_the_OnHub ~~Finding the developer switch:~~ for TP-Link, the developer switch is on the bottom of the device, underneath some of the rubber padding and a screw. For ASUS, remove the entire base, via 4 screws under the rubber feet. See the Exploitee instructions for more info and photos. == Making OpenWrt permanent (on eMMC) (Step 3) == Once you're running OpenWrt via USB: 1. Connect Ethernet to the LAN port; router's LAN address should be at 192.168.1.1 2. Connect another system to the router's LAN, and copy the factory.bin image over, via SCP and SSH: scp -O openwrt-ipq806x-chromium-tplink_onhub-squashfs-factory.bin root@192.168.1.1: ssh root@192.168.1.1 -C "dd if=/dev/zero bs=512 seek=7552991 of=/dev/mmcblk0 count=33 && \ dd if=/root/openwrt-ipq806x-chromium-tplink_onhub-squashfs-factory.bin of=/dev/mmcblk0" 3. Reboot and remove the USB drive. == Developer mode beep == Note that every time you boot the OnHub in developer mode, the device will play a loud "beep" after a few seconds. This is described in the Chromium docs [2], and is intended to make it clear that the device is not running Google software. It is nontrivial to completely disable this beep, although it's possible to "acknowledge" developer mode (and skip the beep) by using a USB keyboard to press CTRL+D every time you boot. [1] https://openwrt.org/toh/google/wifi [2] https://chromium.googlesource.com/chromiumos/docs/+/HEAD/developer_mode.md Signed-off-by: Brian Norris <computersforpeace@gmail.com>
59 lines
1.9 KiB
Makefile
59 lines
1.9 KiB
Makefile
define Build/cros-gpt
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cp $@ $@.tmp 2>/dev/null || true
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ptgen -o $@.tmp -g \
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-T cros_kernel -N kernel -p $(CONFIG_TARGET_KERNEL_PARTSIZE)m \
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-N rootfs -p $(CONFIG_TARGET_ROOTFS_PARTSIZE)m \
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-N rootfs_data -p \
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$$((3687-$(CONFIG_TARGET_ROOTFS_PARTSIZE)-\
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$(CONFIG_TARGET_KERNEL_PARTSIZE)))m
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cat $@.tmp >> $@
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rm $@.tmp
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endef
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define Build/append-kernel-part
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dd if=$(IMAGE_KERNEL) bs=$(CONFIG_TARGET_KERNEL_PARTSIZE)M conv=sync >> $@
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endef
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# NB: Chrome OS bootloaders replace the '%U' in command lines with the UUID of
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# the kernel partition it chooses to boot from. This gives a flexible way to
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# consistently build and sign kernels that always use the subsequent
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# (PARTNROFF=1) partition as their rootfs.
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define Build/cros-vboot
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$(STAGING_DIR_HOST)/bin/cros-vbutil \
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-k $@ -c "root=PARTUUID=%U/PARTNROFF=1" -o $@.new
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@mv $@.new $@
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endef
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define Device/OnhubImage
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KERNEL_LOADADDR = 0x44208000
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SOC := qcom-ipq8064
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KERNEL_SUFFIX := -fit-zImage.itb.vboot
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KERNEL_NAME := zImage
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KERNEL = kernel-bin | fit none $$(KDIR)/image-$$(DEVICE_DTS).dtb | cros-vboot
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IMAGES := factory.bin sysupgrade.bin
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IMAGE/factory.bin := cros-gpt | append-kernel-part | append-rootfs
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IMAGE/sysupgrade.bin := sysupgrade-tar | append-metadata
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DEVICE_PACKAGES := ath10k-firmware-qca988x-ct e2fsprogs kmod-fs-ext4 losetup \
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partx-utils mkf2fs kmod-fs-f2fs \
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ucode kmod-google-firmware kmod-tpm-i2c-infineon \
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kmod-sound-soc-ipq8064-storm kmod-usb-storage
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endef
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define Device/asus_onhub
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$(call Device/OnhubImage)
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DEVICE_VENDOR := ASUS
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DEVICE_MODEL := OnHub SRT-AC1900
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DEVICE_DTS := $$(SOC)-asus-onhub
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BOARD_NAME := asus-onhub
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endef
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TARGET_DEVICES += asus_onhub
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define Device/tplink_onhub
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$(call Device/OnhubImage)
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DEVICE_VENDOR := TP-Link
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DEVICE_MODEL := OnHub AC1900 Cloud Router
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DEVICE_DTS := $$(SOC)-tplink-onhub
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BOARD_NAME := tplink-onhub
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endef
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TARGET_DEVICES += tplink_onhub
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