/*
* Copyright (c) 2018.
* Amaan Cheval <amaan.cheval@gmail.com>
*
* 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 AUTHOR 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 AUTHOR 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 <libchip/ns16550.h>
#include <rtems/bspIo.h>
#include <bsp.h>
#include <bsp/console-termios.h>
#include <rtems/score/cpuimpl.h>
static uint8_t amd64_uart_get_register(uintptr_t addr, uint8_t i)
{
return inport_byte(addr + i);
}
static void amd64_uart_set_register(uintptr_t addr, uint8_t i, uint8_t val)
{
outport_byte(addr + i, val);
}
static ns16550_context amd64_uart_context = {
.base = RTEMS_TERMIOS_DEVICE_CONTEXT_INITIALIZER("UART"),
.get_reg = amd64_uart_get_register,
.set_reg = amd64_uart_set_register,
.port = (uintptr_t) COM1_BASE_IO,
.initial_baud = COM1_CLOCK_RATE
};
/*
* XXX: We should use the interrupt based handler once interrupts are supported
*/
const console_device console_device_table[] = {
{
.device_file = "/dev/console",
.probe = console_device_probe_default,
.handler = &ns16550_handler_polled,
.context = &amd64_uart_context.base
}
};
const size_t console_device_count = RTEMS_ARRAY_SIZE(console_device_table);
static void output_char(char c)
{
rtems_termios_device_context *ctx = console_device_table[0].context;
ns16550_polled_putchar(ctx, c);
}
BSP_output_char_function_type BSP_output_char = output_char;
BSP_polling_getchar_function_type BSP_poll_char = NULL;
