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https://gitlab.rtems.org/rtems/rtos/rtems.git
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89 lines
2.7 KiB
C
89 lines
2.7 KiB
C
/* SPDX-License-Identifier: BSD-2-Clause */
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/**
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* @file
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*
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* @ingroup RTEMSDeviceSerialZynq
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*
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* @brief This source file contains the definition of ::BSP_output_char and
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* ::BSP_poll_char.
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*/
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/*
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* Copyright (C) 2013, 2024 embedded brains GmbH & Co. KG
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <rtems/bspIo.h>
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#include <bsp.h>
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#include <dev/serial/zynq-uart-regs.h>
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#include <rtems/sysinit.h>
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static void zynq_uart_kernel_output_char(char c)
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{
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volatile zynq_uart *regs =
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(volatile zynq_uart *) ZYNQ_UART_KERNEL_IO_BASE_ADDR;
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zynq_uart_write_char_polled(regs, c);
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}
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static int zynq_uart_kernel_poll_char(void)
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{
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volatile zynq_uart *regs =
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(volatile zynq_uart *) ZYNQ_UART_KERNEL_IO_BASE_ADDR;
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return zynq_uart_read_char_polled(regs);
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}
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static void zynq_uart_kernel_early_init(char c);
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static void zynq_uart_kernel_init(void)
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{
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volatile zynq_uart *regs =
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(volatile zynq_uart *) ZYNQ_UART_KERNEL_IO_BASE_ADDR;
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if (BSP_output_char != zynq_uart_kernel_early_init) {
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return;
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}
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zynq_uart_initialize(regs);
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BSP_output_char = zynq_uart_kernel_output_char;
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}
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static void zynq_uart_kernel_early_init(char c)
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{
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zynq_uart_kernel_init();
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zynq_uart_kernel_output_char(c);
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}
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BSP_output_char_function_type BSP_output_char = zynq_uart_kernel_early_init;
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BSP_polling_getchar_function_type BSP_poll_char = zynq_uart_kernel_poll_char;
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RTEMS_SYSINIT_ITEM(
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zynq_uart_kernel_init,
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RTEMS_SYSINIT_BSP_START,
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RTEMS_SYSINIT_ORDER_LAST_BUT_5
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);
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