From f0859573f90b539e2a37857b129323c3d6211512 Mon Sep 17 00:00:00 2001 From: Kinsey Moore Date: Mon, 26 Oct 2020 10:26:49 -0500 Subject: bsps: Move zynq-uart to bsps/shared This moves the zynq-uart driver from bsps/arm/shared to bsps/shared to accomodate use by AArch64 BSPs. --- bsps/include/dev/serial/zynq-uart.h | 85 +++++++++++++++++++++++++++++++++++++ 1 file changed, 85 insertions(+) create mode 100644 bsps/include/dev/serial/zynq-uart.h (limited to 'bsps/include/dev/serial/zynq-uart.h') diff --git a/bsps/include/dev/serial/zynq-uart.h b/bsps/include/dev/serial/zynq-uart.h new file mode 100644 index 0000000000..2c0f250a3a --- /dev/null +++ b/bsps/include/dev/serial/zynq-uart.h @@ -0,0 +1,85 @@ +/** + * @file + * @ingroup zynq_uart + * @brief UART support. + */ + +/* + * SPDX-License-Identifier: BSD-2-Clause + * + * Copyright (C) 2013, XXX embedded brains GmbH + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef LIBBSP_ARM_XILINX_ZYNQ_UART_H +#define LIBBSP_ARM_XILINX_ZYNQ_UART_H + +#include + +#ifdef __cplusplus +extern "C" { +#endif /* __cplusplus */ + +/** + * @defgroup zynq_uart UART Support + * @ingroup RTEMSBSPsARMZynq + * @brief UART Support + * + * This driver operates an instance of the Cadence UART present in the + * family of Xilinx Zynq SoCs. + */ + +typedef struct { + rtems_termios_device_context base; + volatile struct zynq_uart *regs; + bool transmitting; + rtems_vector_number irq; +} zynq_uart_context; + +extern const rtems_termios_device_handler zynq_uart_handler; + +#define ZYNQ_UART_DEFAULT_BAUD 115200 + +#ifndef ZYNQ_CLOCK_UART +#define ZYNQ_CLOCK_UART 100000000 +#endif + +void zynq_uart_initialize(rtems_termios_device_context *base); + +int zynq_uart_read_polled(rtems_termios_device_context *base); + +void zynq_uart_write_polled( + rtems_termios_device_context *base, + char c +); + +/** + * Flush TX FIFO and wait until it is empty. Used in bsp_reset. + */ +void zynq_uart_reset_tx_flush(zynq_uart_context *ctx); + +#ifdef __cplusplus +} +#endif /* __cplusplus */ + +#endif /* LIBBSP_ARM_XILINX_ZYNQ_UART_H */ -- cgit v1.2.3