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129 lines
4.5 KiB
ReStructuredText
129 lines
4.5 KiB
ReStructuredText
.. _getting-started-up2:
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Getting Started Guide for the UP2 Board
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#######################################
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Hardware setup
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**************
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The `UP Squared board <http://www.up-board.org/upsquared/specifications/>`_ (UP2) is
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an x86 maker board based on the Intel Apollo Lake platform. The UP boards
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are used in IoT applications, industrial automation, digital signage, and more.
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The UP2 features Intel `Celeron N3550
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<https://ark.intel.com/products/95598/Intel-Celeron-Processor-N3350-2M-Cache-up-to-2_4-GHz>`_
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and Intel `Pentium N4200
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<https://ark.intel.com/products/95592/Intel-Pentium-Processor-N4200-2M-Cache-up-to-2_5-GHz>`_
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SoCs. Both have been confirmed to work with ACRN.
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Connecting to the serial port
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=============================
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The UP2 board has two serial ports. The following figure shows the UP2 board's
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40-pin HAT connector we'll be using as documented in the `UP2 Datasheet
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<https://up-board.org/wp-content/uploads/datasheets/UP-Square-DatasheetV0.5.pdf>`_.
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.. image:: images/the-bottom-side-of-UP2-board.png
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:align: center
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We'll access the serial port through the I/O pins in the
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40-pin HAT connector using a `USB TTL serial cable
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<http://www.ftdichip.com/Products/USBTTLSerial.htm>`_,
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and show how to connect a serial port with
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``PL2303TA USB to TTL serial cable`` for example:
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.. image:: images/USB-to-TTL-serial-cable.png
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:align: center
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Connect pin 6 (``Ground``), pin 8 (``UART_TXD``) and pin 10 (``UART_RXD``) of the HAT
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connector to respectively the ``GND``, ``RX`` and ``TX`` pins of your
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USB serial cable. Plug the USB TTL serial cable into your PC and use a
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console emulation tool such as ``minicom`` or ``putty`` to communicate
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with the UP2 board for debugging.
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.. image:: images/the-connection-of-serial-port.png
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:align: center
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Software setup
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**************
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Setting up the ACRN hypervisor (and associated components) on the UP2
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board is no different than other hardware platforms so please follow
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the instructions provided in the :ref:`rt_industry_setup`, with
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the additional information below.
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There are a few parameters specific to the UP2 board that differ from
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what is referenced in the :ref:`rt_industry_setup` section:
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1. Serial Port settings
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#. Storage device name
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You will need to keep these in mind in a few places:
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* When mounting the EFI System Partition (ESP)
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.. code-block:: none
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# mount /dev/mmcblk0p1 /mnt
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* When adjusting the ``acrn.conf`` file
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* Set the ``root=`` parameter using the ``PARTUUID`` or device name directly
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* When configuring the EFI firmware to boot the ACRN hypervisor by default
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.. code-block:: none
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# efibootmgr -c -l "\EFI\acrn\acrn.efi" -d /dev/mmcblk0 -p 1 -L "ACRN Hypervisor" \
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-u "bootloader=\EFI\org.clearlinux\bootloaderx64.efi uart=bdf@0:18.1"
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.. note::
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There have been reports that the UP2 EFI firmware does not always keep
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these settings during a reboot. Make sure to always double-check the
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settings if ACRN is not running correctly. There is no reliable way to
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set this boot order and you may want to remove other, unused boot entries
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and also change the boot order (``-o`` option).
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UP2 serial port setting
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=======================
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The serial port (ttyS1) in the 40-pin HAT connector is located at ``serial PCI BDF 0:18.1``.
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You can check this from the ``lspci`` output from the initial Clearlinux installation.
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Also you can use ``dmesg | grep tty`` to get its IRQ information for console setting; and update
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SOS bootargs ``console=ttyS1`` in acrn.conf to match with console setting.
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.. code-block:: none
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# lspci | grep UART
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00:18.0 . Series HSUART Controller #1 (rev 0b)
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00:18.1 . Series HSUART Controller #2 (rev 0b)
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# dmesg | grep tty
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dw-apb-uart.8: ttyS0 at MMIO 0x91524000 (irq = 4, base_baud = 115200) is a 16550A
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dw-apb-uart.9: ttyS1 at MMIO 0x91522000 (irq = 5, base_baud = 115200) is a 16550A
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The second entry associated with ``00:18.1 @irq5`` is the one on the 40-pin HAT connector.
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UP2 block device
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================
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The UP2 board has an on-board eMMC device. The device name to be used
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throughout the :ref:`getting_started` therefore is ``/dev/mmcblk0``
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(and ``/dev/mmcblk0pX`` for any partition).
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The UUID of the partition ``/dev/mmcblk0p3`` can be found by
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.. code-block:: none
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# blkid /dev/mmcblk
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.. note::
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You can also use the device name directly, e.g.: ``root=/dev/mmcblk0p3``
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Running the hypervisor
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**********************
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Now that the hypervisor and Service OS have been installed on your UP2 board,
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you can proceed with the rest of the instructions in the
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:ref:`kbl-nuc-sdc` and install the User OS (UOS).
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