diff options
Diffstat (limited to 'user/bsps/arm/xilinx-zynq.rst')
| -rw-r--r-- | user/bsps/arm/xilinx-zynq.rst | 30 |
1 files changed, 29 insertions, 1 deletions
diff --git a/user/bsps/arm/xilinx-zynq.rst b/user/bsps/arm/xilinx-zynq.rst index 365c336..0ac4487 100644 --- a/user/bsps/arm/xilinx-zynq.rst +++ b/user/bsps/arm/xilinx-zynq.rst @@ -1,6 +1,6 @@ .. SPDX-License-Identifier: CC-BY-SA-4.0 -.. Copyright (C) 2020 Chris Johns (chrisj@rtems.org) +.. Copyright (C) 2015, 2020 Chris Johns (chrisj@rtems.org) xilinx-zynq =========== @@ -37,6 +37,34 @@ to return the peripheral clock. Normally this is half the CPU clock. This function is declared ``weak`` so you can override the default behaviour by providing it in your application. +Console +------- + +The console driver for the UARTs will always be initialized to a +baud rate of 115200 with 8 bit characters, 1 stop bit and no parity +bits during start up. +Previous configurations programmed into the hardware by the Xilinx +tools or a bootloader will be overwritten. + +The settings for the console driver can be changed by the user +application through the termios API afterwards. + +Network +------- + +The Cadence network interface driver of LibBSD works on the Xilinx Zynq +platform. The hardware checksum support works on real hardware but does not +seem to be supported on Qemu therefore the default state is to disable +``IFCAP_TXCSUM`` and ``IFCAP_RXCSUM`` and this can be enabled from the shell +with: + +.. code-block:: none + + ifconfig cgem0 rxcsum txcsum + +or with an ``ioctl()`` call to the network interface driver with ``SIOCSIFCAP`` +and the mask ``IFCAP_TXCSUM`` and ``IFCAP_RXCSUM`` set. + Debugging with xilinx_zynq_a9_qemu ---------------------------------- |