1 Arm Server Base System Architecture Reference board (``sbsa-ref``)
2 ==================================================================
4 While the ``virt`` board is a generic board platform that doesn't match
5 any real hardware the ``sbsa-ref`` board intends to look like real
6 hardware. The `Server Base System Architecture
7 <https://developer.arm.com/documentation/den0029/latest>`_ defines a
8 minimum base line of hardware support and importantly how the firmware
9 reports that to any operating system. It is a static system that
10 reports a very minimal DT to the firmware for non-discoverable
11 information about components affected by the qemu command line (i.e.
12 cpus and memory). As a result it must have a firmware specifically
13 built to expect a certain hardware layout (as you would in a real
16 It is intended to be a machine for developing firmware and testing
17 standards compliance with operating systems.
22 The sbsa-ref board supports:
24 - A configurable number of AArch64 CPUs
26 - System bus AHCI controller
27 - System bus EHCI controller
28 - CDROM and hard disc on AHCI bus
29 - E1000E ethernet card on PCIe bus
30 - VGA display adaptor on PCIe bus
31 - A generic SBSA watchdog device