sbsa.rst (1249B)
1 Arm Server Base System Architecture Reference board (``sbsa-ref``) 2 ================================================================== 3 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 14 machine). 15 16 It is intended to be a machine for developing firmware and testing 17 standards compliance with operating systems. 18 19 Supported devices 20 """"""""""""""""" 21 22 The sbsa-ref board supports: 23 24 - A configurable number of AArch64 CPUs 25 - GIC version 3 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 32