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dev/serial: Add Zynq UART kernel I/O support

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Replace the BSP_CONSOLE_MINOR BSP option for the Xilinx Zynq BSPs with the new
BSP option ZYNQ_UART_KERNEL_IO_BASE_ADDR.  Move the kernel I/O support to a
shared file.
This commit is contained in:
Sebastian Huber
2024-03-19 09:55:35 +01:00
parent 8ad3f92b9a
commit 53d092471f
16 changed files with 92 additions and 223 deletions
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88
bsps/shared/dev/serial/zynq-uart-kernel-io.c Normal file
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/* SPDX-License-Identifier: BSD-2-Clause */
/**
* @file
*
* @ingroup zynq_uart
*
* @brief This source file contains the definition of ::BSP_output_char and
* ::BSP_poll_char.
*/
/*
* Copyright (C) 2013, 2024 embedded brains GmbH & Co. KG
*
* 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.
*/
#include <rtems/bspIo.h>
#include <bsp.h>
#include <dev/serial/zynq-uart-regs.h>
#include <rtems/sysinit.h>
static void zynq_uart_kernel_output_char(char c)
{
volatile zynq_uart *regs =
(volatile zynq_uart *) ZYNQ_UART_KERNEL_IO_BASE_ADDR;
zynq_uart_write_char_polled(regs, c);
}
static int zynq_uart_kernel_poll_char(void)
{
volatile zynq_uart *regs =
(volatile zynq_uart *) ZYNQ_UART_KERNEL_IO_BASE_ADDR;
return zynq_uart_read_char_polled(regs);
}
static void zynq_uart_kernel_early_init(char c);
static void zynq_uart_kernel_init(void)
{
volatile zynq_uart *regs =
(volatile zynq_uart *) ZYNQ_UART_KERNEL_IO_BASE_ADDR;
if (BSP_output_char != zynq_uart_kernel_early_init) {
return;
}
zynq_uart_initialize(regs);
BSP_output_char = zynq_uart_kernel_output_char;
}
static void zynq_uart_kernel_early_init(char c)
{
zynq_uart_kernel_init();
zynq_uart_kernel_output_char(c);
}
BSP_output_char_function_type BSP_output_char = zynq_uart_kernel_early_init;
BSP_polling_getchar_function_type BSP_poll_char = zynq_uart_kernel_poll_char;
RTEMS_SYSINIT_ITEM(
zynq_uart_kernel_init,
RTEMS_SYSINIT_BSP_START,
RTEMS_SYSINIT_ORDER_LAST_BUT_5
);