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# openwrt-redmi-ax3000
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`Openwrt` for `Redmi AX3000` / `Xiaomi CR880x` / `Xiaomi CR881x`
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**!!! NOTE: This is the main development branch which using mainline `Linux LTS 5.15` !!!**
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If you need more stable versions, please checkout the following branches which using QSDK kernel
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- [`ipq50xx-qsdk-kernel-5.4-openwrt-21.02-qsdk-11.5.05.841.1029`](https://github.com/hzyitc/openwrt-redmi-ax3000/tree/ipq50xx-qsdk-kernel-5.4-openwrt-21.02-qsdk-11.5.05.841.1029)
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- [`ipq50xx-qsdk-kernel-4.4-openwrt-21.02-qsdk-11.4.0.5.7418`](https://github.com/hzyitc/openwrt-redmi-ax3000/tree/ipq50xx-qsdk-kernel-4.4-openwrt-21.02-qsdk-11.4.0.5.7418)
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| Device | Boot | Switch | CPU Ethernet | NSS NAT | 2.4G WiFi | 5G WiFi |
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| :-: | :-: | :-: | :-: | :-: | :-: | :-: |
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| Xiaomi CR880x <br /> (M79 version) | ✔️ | ✔️ | ✔️ | ❌ | ⚠️ Without `NSS Offload` | See Note¹ <br /> ⚠️ Without `NSS Offload` |
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| Redmi AX3000 <br /> Xiaomi CR880x <br /> (M81 version) | ✔️ | ✔️ | ✔️ | ❌ | ⚠️ Without `NSS Offload` | See Note¹ <br /> ⚠️ Without `NSS Offload` |
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| Xiaomi CR881x | ✔️ | ✔️ | ✔️ | ❌ | ⚠️ Without `NSS Offload` | See Note¹ <br /> ⚠️ Without `NSS Offload` |
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| CMCC RAX3000Q | ⚠️ No test ⚠️ |
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>
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> NOTE¹: For 160MHz, `Country Code`, `Width` and `Channel` need to be set correctly. And wait 1 minute for radar detection, then the WiFi will be appeareed.
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>
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> ```
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> uci -q batch <<-EOF
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> wireless.radio1.country='CN'
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> wireless.radio1.htmode='HE160'
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> wireless.radio1.channel='64'
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> EOF
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> ```
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## How to build
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OS: `Ubuntu 20.04 (focal)`
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```bash
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# Install dependencies
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sudo apt update
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sudo apt install build-essential clang flex g++ gawk gcc-multilib gettext \
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git libncurses5-dev libssl-dev python3-distutils rsync unzip zlib1g-dev
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# Clone this repo
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git clone https://github.com/hzyitc/openwrt-redmi-ax3000
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cd openwrt-redmi-ax3000
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# Update and install feeds
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./scripts/feeds update -a
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./scripts/feeds install -a
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# Configure
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make menuconfig
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# Download
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make -j16 download
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# Build
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make -j$(nproc)
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```
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## How to install
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### Get `UART` access
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> Input from `UART` will be allowed after a successful `TFTP recovery`.
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1. Connect `UART` and `LAN`.
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2. Download the vendor firmware:
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Offical website: https://www.miwifi.com/miwifi_download.html
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| Device | URL |
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| :-: | :-: |
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| Redmi AX3000 | https://cdn.cnbj1.fds.api.mi-img.com/xiaoqiang/rom/ra81/miwifi_ra81_firmware_1dd69c_1.0.33.bin |
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| Xiaomi CR8806 | https://cdn.cnbj1.fds.api.mi-img.com/xiaoqiang/rom/cr8806/miwifi_cr8806_firmware_fe70b_6.2.14.bin |
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| Xiaomi CR8808 | https://cdn.cnbj1.fds.api.mi-img.com/xiaoqiang/rom/cr8808/miwifi_cr8808_firmware_9d216_6.2.11.bin |
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| Xiaomi CR8809 | https://cdn.cnbj1.fds.api.mi-img.com/xiaoqiang/rom/cr8809/miwifi_cr8809_firmware_b814a_6.2.102.bin |
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3. Use [`MIWIFIRepairTool`](https://bigota.miwifi.com/xiaoqiang/tools/MIWIFIRepairTool.x86.zip) to recover the device's firmware.
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Offical tutorial: https://www.xiaomi.cn/post/19134127
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> This tool simply does `TFTP recovery`. You can use other `DHCP` and `TFTP` server as well.
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>
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> Here are some useful links:
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>
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>> https://forum.openwrt.org/t/adding-openwrt-support-for-xiaomi-redmi-router-ax6s-xiaomi-router-ax3200/111085/513
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>>
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>> https://github.com/mikeeq/xiaomi_ax3200_openwrt#uart-flash
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>>
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>> https://openwrt.org/inbox/toh/xiaomi/xiaomi_ax3600#tftp_recovery
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4. Hold the `reset` button and reboot the router until the `system` LED blink.
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5. Wait until the firmware being flashed.
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6. Unplug then plug back in the power.
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7. Send any key stroke to `UART` to interrupt the `U-boot`.
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8. Run the following command inside `U-boot`:
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```shell
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setenv boot_wait on
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setenv uart_en 1
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saveenv
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```
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Now we have enabled `UART`.
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### Flash Openwrt
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#### a. Use `U-boot` to flash
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Download [`openwrt-ipq50xx-arm-redmi_ax3000-squashfs-nand-factory.ubi`](https://github.com/hzyitc/openwrt-redmi-ax3000/releases/latest/download/openwrt-ipq50xx-arm-redmi_ax3000-squashfs-nand-factory.ubi) and put it into TFTP root.
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Then run the following command inside `U-boot`:
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```shell
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# This router ip
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setenv ipaddr 192.168.1.2
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# TFTP server ip
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setenv serverip 192.168.1.1
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# Download the firmware to the RAM
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tftpboot openwrt-ipq50xx-arm-redmi_ax3000-squashfs-nand-factory.ubi
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# Flash it as system 2
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flash rootfs_1
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setenv flag_try_sys2_failed 0
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setenv flag_boot_rootfs 1
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setenv flag_last_success 1
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saveenv
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# Flash it as system 1
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# flash rootfs
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# setenv flag_try_sys1_failed 0
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# setenv flag_boot_rootfs 0
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# setenv flag_last_success 0
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# saveenv
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# Reboot
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reset
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```
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#### b. Use `miwifi` (the vendor firmware) to flash
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```bash
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cd /tmp
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wget https://github.com/hzyitc/openwrt-redmi-ax3000/releases/latest/download/openwrt-ipq50xx-arm-redmi_ax3000-squashfs-nand-factory.ubi
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# Check your partition table
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# cat /proc/mtd
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[[ "$(grep '"rootfs"' /proc/mtd | cut -d':' -f1)" == "mtd18" ]] || exit
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[[ "$(grep '"rootfs_1"' /proc/mtd | cut -d':' -f1)" == "mtd19" ]] || exit
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# Detect the current system slot and flash into the other one
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# cat /proc/cmdline
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mtd="$(grep -oE 'ubi.mtd=[a-zA-Z0-9\-\_]*' /proc/cmdline | cut -d'=' -f2)"
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if [[ "$mtd" == "rootfs" ]]; then
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# Flash it as system 2
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ubiformat /dev/mtd19 -f openwrt-ipq50xx-arm-redmi_ax3000-squashfs-nand-factory.ubi
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nvram set flag_try_sys2_failed=0
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nvram set flag_boot_rootfs=1
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nvram set flag_last_success=1
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nvram commit
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elif [[ "$mtd" == "rootfs_1" ]]; then
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# Flash it as system 1
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ubiformat /dev/mtd18 -f openwrt-ipq50xx-arm-redmi_ax3000-squashfs-nand-factory.ubi
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nvram set flag_try_sys1_failed=0
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nvram set flag_boot_rootfs=0
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nvram set flag_last_success=0
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nvram commit
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fi
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# Reboot
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reboot
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```
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## Related links
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[`openwrt/openwrt`](https://github.com/openwrt/openwrt) - Openwrt official repository
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[`qsdk`](https://git.codelinaro.org/clo/qsdk) - QSDK official repository
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[`quic/qca-sdk-nss-fw`](https://github.com/quic/qca-sdk-nss-fw) - NSS firmware
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[`quic/upstream-wifi-fw`](https://github.com/quic/upstream-wifi-fw) - WiFi firmware
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[`qca/qca-swiss-army-knife`](https://github.com/qca/qca-swiss-army-knife) - BDF tools
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[`Telecominfraproject/wlan-ap`](https://github.com/Telecominfraproject/wlan-ap) - another Openwrt which support `ipq50xx`
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