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 [[!meta title="NetBSD/evbarm on Allwinner Technology SoCs"]]  [[!meta title="NetBSD/evbarm on Allwinner Technology SoCs"]]
   
 NetBSD 7.0 has support for A10, A20, and A31 SoCs. NetBSD -current adds support for A80 SoCs.  NetBSD supports many boards based on Allwinner SoCs. Starting with NetBSD 8.0, FDT is used to configure devices. As a result, a large number of boards and configurations can be supported with a single kernel.
   
   <img src="https://pbs.twimg.com/media/DIRGmsOXcAEJu-j.jpg" width="300">
   <img src="https://pbs.twimg.com/media/DJYA7SCXUAEvEQk.jpg" width="300">
   
 [[!toc levels=2]]  [[!toc levels=2]]
   
 # Supported boards  # Supported SoCs
  - [Banana Pi](http://www.bananapi.org/p/product.html) (BPI)  
  - Cubieboard 2 (CUBIEBOARD)  <table>
  - [Cubieboard 4](http://cubieboard.org/model/cb4/) (ALLWINNER_A80) *NetBSD-current*    <thead>
  - Cubietruck (CUBIETRUCK)      <tr>
  - [Merrii Hummingbird A31](http://www.merrii.com/en/pla_d.asp?id=172) (HUMMINGBIRD_A31)        <th>Family</th>
         <th>SoC</th>
         <th>NetBSD version</th>
         <th>Example boards</th>
         <th>Notes</th>
       </tr>
     </thead>
     <tbody>
       <tr><td>sun4i</td><td>A10</td><td>8.99.3 and later</td><td><a href="https://www.olimex.com/Products/OLinuXino/A10/A10-OLinuXino-LIME/open-source-hardware">Olimex A10-OLinuXino-LIME</a><td></td></tr>
       <tr><td>sun5i</td><td>A10s</td><td>-</td><td></td></tr>
       <tr><td>sun5i</td><td>A13</td><td>8.99.2 and later</td><td><a href="https://www.olimex.com/Products/OLinuXino/A13/A13-OLinuXino/open-source-hardware">Olimex A13-OLinuXino</a>, <a href="https://www.olimex.com/Products/OLinuXino/A13/A13-OLinuXino-MICRO/open-source-hardware">Olimex A13-OLinuXino-MICRO</a></td></tr>
       <tr><td>sun5i</td><td>GR8</td><td>8.99.5</td><td><a href="https://getchip.com/pages/chippro">C.H.I.P. Pro</a></td><td></td></tr>
       <tr><td>sun5i</td><td>R8</td><td>8.99.2 and later</td><td><a href="https://getchip.com/pages/chip">C.H.I.P.</a>, <a href="https://getchip.com/pages/pocketchip">Pocket C.H.I.P.</a></td><td></td></tr>
       <tr><td>sun6i</td><td>A31</td><td>7.0 and later</td><td><a href="http://linux-sunxi.org/Merrii_Hummingbird_A31">Merrii Hummingbird A31</a></td><td></td></tr>
       <tr><td>sun6i</td><td>A31s</td><td>-</td><td></td><td></td></tr>
       <tr><td>sun7i</td><td>A20</td><td>7.0 and later</td><td><a href="https://linux-sunxi.org/Cubietech_Cubieboard2">Cubietech Cubieboard 2</a>, <a href="https://linux-sunxi.org/Cubietruck">Cubietech Cubietruck</a>, <a href="http://linux-sunxi.org/LeMaker_Banana_Pi">LeMaker Banana Pi</a></td><td></td></tr>
       <tr><td>sun8i</td><td>A23</td><td>-</td><td></td></tr>
       <tr><td>sun8i</td><td>A33</td><td>-</td><td><a href="https://www.olimex.com/Products/OLinuXino/A33/A33-OLinuXino/open-source-hardware">Olimex A33-OLinuXino</a></td></tr>
       <tr><td>sun8i</td><td>R40</td><td>-</td><td><a href="http://www.banana-pi.org/m2u.html">Sinovoip Banana Pi BPI-M2U</a></td></tr>
       <tr><td>sun8i</td><td>A83T</td><td>8.0 and later</td><td><a href="http://www.banana-pi.org/m3.html">Sinovoip Banana Pi BPI-M3</a></td><td></td></tr>
       <tr><td>sun8i</td><td>H2+</td><td>8.0 and later</td><td><a href="http://www.orangepi.org/orangepizero/">Xunlong Orange Pi Zero</a></td><td></td></tr>
       <tr><td>sun8i</td><td>H3</td><td>8.0 and later</td><td><a href="http://nanopi.io/nanopi-neo.html">FriendlyARM NanoPi NEO</a>, <a href="http://www.orangepi.org/orangepiplus2e/">Xunlong Orange Pi Plus 2E</a></td><td></td></tr>
       <tr><td>sun8i</td><td>V3s</td><td>-</td><td><a href="https://www.indiegogo.com/projects/licheepi-zero-6-extensible-linux-module-on-finger-wifi-diy#/">Lichee Pi Zero</a></td><td></td></tr>
       <tr><td>sun9i</td><td>A80</td><td>8.0 and later</td><td><a href="http://linux-sunxi.org/Cubietech_Cubieboard4">Cubietech Cubieboard 4</a></td><td></td></tr>
       <tr><td>sun50i</td><td>A64</td><td>8.99.2 and later</td><td><a href="https://www.pine64.org/?page_id=1194">Pine64</a>, <a href="https://www.pine64.org/?page_id=3707">Pinebook</a></td><td>aarch32 mode</td></tr>
       <tr><td>sun50i</td><td>H5</td><td>8.99.4 and later</td><td><a href="http://www.friendlyarm.com/index.php?route=product/product&path=69&product_id=180">FriendlyARM NanoPi NEO2, <a href="http://www.friendlyarm.com/index.php?route=product/product&path=69&product_id=196">FriendlyARM NanoPi NEO Plus2</a></td><td>aarch32 mode</td></tr>
       <tr><td>sun50i</td><td>H6</td><td>-</td><td><a href="http://www.orangepi.org/OrangePiOneplus/">Orange Pi One Plus</a>, <a href="https://www.pine64.org/?product_cat=pine-h64-boards">Pine H64</a></td></tr>
     </tbody>
   </table>
   
   
 # Supported hardware  # Supported hardware
  - SoCs  
    - Cortex-A7: A20 (2-core), A31 (4-core), A80  
    - Cortex-A7/A15: A80 (4-core A7 + 4-core A15)  
  - SD/MMC controller (DMA)  
  - DMA controller  
  - GPIO  
    - Configuration using FEX scripts is supported  
  - UART  
  - I2C  
  - P2WI (A31) / RSB (A80)  
  - PMU  
    - AXP209 (A20)  
    - AXP221 (A31)  
    - AXP806 (A80)  
    - AXP809 (A80)  
  - Watchdog timer  
  - RTC  
    - A20/A31: integrated RTC, PCF8563  
    - A80: AC100  
  - Audio codec (A20/A31)  
  - USB host  
    - OHCI  
    - EHCI  
    - OTG (A20)  
  - SATA (A10/A20)  
  - Gigabit Ethernet (GMAC)  
  - HDMI  
    - DDC / EDID mode detection (A20/A31)  
    - Audio support (A20/A31)  
  - Framebuffer (A20/A31/A80)  
  - IR receiver (A20/A31/A80)  
   
 # TODO  
  - A10  
    - Interrupt controller  
    - EMAC  
  - A31  
    - OTG  
    - IR transmitter  
    - 3G module  
    - TV input  
  - A80  
    - MP  
    - big.LITTLE support  
    - USB3 (OTG and XHCI)  
    - IR transmitter  
    - HDMI (DDC and mode setting; currently relies on U-Boot for setup)  
    - Audio codec  
  - All  
    - USB device mode  
    - SD/MMC UHS-I support (needs sdmmc(4) changes)  
    - SDIO (Bluetooth / WiFi)  
    - NAND  
    - VGA (Cubietruck, Hummingbird A31, Cubieboard4)  
   
 # Installation  Please refer to the [SUNXI kernel config](https://nxr.netbsd.org/xref/src/sys/arch/evbarm/conf/SUNXI) for the most up-to-date list of supported hardware.
   
   <table>
     <thead>
       <tr>
         <th>Device</th>
         <th>Supported</th>
         <th>Notes</th>
       </tr>
     </thead>
     <tbody>
       <tr><td>Audio codec</td><td>Yes</td><td>Supported on sun4i, sun5i, sun6i, sun7i, sun8i-h2+, sun8i-h3</td></tr>
       <tr><td>Crypto engine</td><td>-</td><td></td></tr>
       <tr><td>CSI</td><td>-</td><td></td></tr>
       <tr><td>DMA</td><td>Yes</td><td></td></tr>
       <tr><td>Fast Ethernet (sun4i/sun7i)</td><td>Yes</td><td></td></tr>
       <tr><td>Framebuffer</td><td>Yes</td><td>Uses simplefb configured by bootloader</td></tr>
       <tr><td>Gigabit Ethernet (sun6i/sun7i/sun9i)</td><td>Yes</td><td></td></tr>
       <tr><td>Gigabit Ethernet (sun8i/sun50i)</td><td>Yes</td><td></td></tr>
       <tr><td>GPIO</td><td>Yes</td><td></td></tr>
       <tr><td>GPU</td><td>-</td><td></td></tr>
       <tr><td>I2C</td><td>Yes</td><td></td></tr>
       <tr><td>I2S/PCM</td><td>-</td><td></td></tr>
       <tr><td>IR transceiver</td><td>-</td><td></td></tr>
       <tr><td>NAND</td><td>Yes</td><td></td></tr>
       <tr><td>P2WI/RSB</td><td>Yes</td><td></td></tr>
       <tr><td>PWM</td><td>-</td><td></td></tr>
       <tr><td>RTC</td><td>Yes</td><td></td></tr>
       <tr><td>SATA</td><td>Yes</td><td></td></tr>
       <tr><td>SD/MMC</td><td>Yes</td><td></td></tr>
       <tr><td>SMP</td><td>Yes</td><td>Uses PSCI support in firmware</td></tr>
       <tr><td>SPDIF</td><td>-</td><td></td></tr>
       <tr><td>SPI</td><td>-</td><td></td></tr>
       <tr><td>Thermal sensors</td><td>Yes</td><td></td></tr>
       <tr><td>Touch screen</td><td>Yes</td><td></td></tr>
       <tr><td>UART</td><td>Yes</td><td></td></tr>
       <tr><td>USB 2.0</td><td>Yes</td><td></td></tr>
       <tr><td>USB OTG</td><td>Experimental</td><td></td></tr>
       <tr><td>Watchdog timer</td><td>Yes</td><td></td></tr>
     </tbody>
   </table>
   
 ## A10 / A20 / A31 based boards  # Installation
   
 * Start with an ARMv7 image from *evbarm-earmv7hf/binary/gzimg/* such as *beagleboard.img*  - Download or build **armv7.img** from NetBSD -current
 * Download a U-Boot build for your board  - Write the image to disk: **dd if=armv7.img of=/dev/rld0d bs=1m conv=sync**
   * Download the correct build from the linux-sunxi web site <http://dl.linux-sunxi.org/nightly/u-boot-sunxi/u-boot-sunxi-mainline/u-boot-sunxi-mainline-latest/>.  - Install a board-specific U-Boot (2017.07 or later) from pkgsrc to the SD card: **dd if=/usr/pkg/share/u-boot/&lt;boardname&gt;/u-boot-sunxi-with-spl.bin of=/dev/rld0d bs=1k seek=8 conv=sync**
 * Write the *u-boot-sunxi-with-spl.bin* loader to the empty space at the start of the base image:  
 [[!template  id=programlisting text="""  
 # dd if=u-boot-sunxi-with-spl.bin of=beagleboard.img bs=1k seek=8 conv=notrunc  
 """]]  
 * Write the image to an SD card.  
 * Copy the kernel (netbsd.ub) for your board to the root of the MS-DOS partition on the SD card.  
 * Create or edit uEnv.txt on the MS-DOS partition:  
 [[!template  id=programlisting text="""  
 bootargs=root=ld0a  
 uenvcmd=mmc dev 0; mmc rescan; fatload mmc 0:1 82000000 netbsd.ub; bootm 82000000  
 """]]  
   
 ## A80 based boards  
   
 * Cubieboard 4 U-Boot for SD card: <http://ftp.netbsd.org/pub/NetBSD/misc/jmcneill/allwinner/a80/cubieboard4-uboot.tgz>  
 [[!template  id=programlisting text="""  
 # dd if=u-boot-spl.bin of=/dev/sdd bs=1k seek=8  
 # dd if=u-boot-sun9iw1p1.bin of=/dev/sdd bs=1k seek=19096  
 """]]  
 * First partition needs to be at +20MB offset. Format it as MSDOS, copy 'netbsd.ub' to it as 'uImage'.  
   
 # Big (endian) fun  
   
 You can run this boards with a little endian (this is the default and implied by above install instructions)  
 or with a big endian kernel and userland. However, kernel and userland endianness needs to match.  
   
 To build a big endian release (or sets) use   
 [[!template  id=programlisting text="""  
 ./build.sh -m evbearmv7hf-eb   
 """]]  
 where -eb means endianness big, hf is hardware floating point support, and earm is the modern "extended" ABI for ARM CPUs, and finally v7 is version 7 of the supported instruction set.  
   
 # FEX scripts  
   
 Board configuration scripts can be found here: <https://github.com/linux-sunxi/sunxi-boards/blob/master/sys_config>. You can compile them with the "fex2bin" tool found here: <https://github.com/linux-sunxi/sunxi-tools>.  
   
 To use, copy the compiled FEX to your MS-DOS partition, load it with U-Boot, and then tell the kernel where to find it with the "sysconfig=" boot option. For example, uEnv.txt on a Cubieboard2 might look like this:  
   
 [[!template  id=programlisting text="""  
 bootargs=root=ld0a sysconfig=0x43000000  
 uenvcmd=mmc dev 0; mmc rescan; fatload mmc 0:1 43000000 cubieboard2.bin; fatload mmc 0:1 82000000 netbsd.ub; bootm 82000000  
 """]]  
   
 Some pre-compiled .bin files can be found here: <http://ftp.netbsd.org/pub/NetBSD/misc/jmcneill/allwinner/fex/>  
   
 # Framebuffer console  
   
 To use HDMI for the console device, add *console=fb* to bootargs in uEnv.txt.  
   
 If the connected display does not let you disable overscan, you can add a margin to the framebuffer by with the *fb.margin* bootargs option. For example, to set a 25-pixel margin around the screen, add *fb.margin=25* to uEnv.txt  
   
 # HDMI audio  
   
 The default audio device is the analog audio codec. To change the default device, use the *audiocfg* command:  
   
 [[!template  id=programlisting text="""  
 a31# audiocfg list  
 0: [*] audio0 @ awinac0: Allwinner CODEC A31, 2 playback channels  
 1: [ ] audio1 @ awinhdmiaudio0: Allwinner HDMI 1.4, 2 playback channels  
 a31# audiocfg default 1  
 setting default audio device to audio1  
 a31# audiocfg list  
 0: [ ] audio0 @ awinac0: Allwinner CODEC A31, 2 playback channels  
 1: [*] audio1 @ awinhdmiaudio0: Allwinner HDMI 1.4, 2 playback channels  
 """]]  
   
 # MAC address  
   
 On boards where the ethernet MAC address cannot be determmined, a random MAC address will be generated every boot. You can override this behaviour by specifying a MAC address in *uEnv.txt*:  
 [[!template  id=programlisting text="""  
 bootargs=root=ld0a awge0.mac-address=02:a0:3d:88:1a:1e  
 """]]  
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  Added in v.1.79

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