/**
* @file
*
* @ingroup RTEMSBSPsARMLPC176X
*
* @brief Console configuration.
*/
/*
* Copyright (c) 2008-2014 embedded brains GmbH. All rights reserved.
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.org/license/LICENSE.
*/
#include <libchip/ns16550.h>
#include <bsp.h>
#include <bsp/io.h>
#include <bsp/irq.h>
#include <bsp/console-termios.h>
/**
* @brief Gets the uart register according to the current address.
*
* @param addr Register address.
* @param i Index register.
* @return Uart register.
*/
static inline uint8_t lpc176x_uart_get_register(
const uintptr_t addr,
const uint8_t i
)
{
volatile uint32_t *reg = (volatile uint32_t *) addr;
return (uint8_t) reg[ i ];
}
/**
* @brief Sets the uart register address according to the value passed.
*
* @param addr Register address.
* @param i Index register.
* @param val Value to set.
*/
static inline void lpc176x_uart_set_register(
const uintptr_t addr,
const uint8_t i,
const uint8_t val
)
{
volatile uint32_t *reg = (volatile uint32_t *) addr;
reg[ i ] = val;
}
static bool lpc176x_uart1_probe(rtems_termios_device_context *ctx)
{
(void)ctx;
lpc176x_module_enable( LPC176X_MODULE_UART_1, LPC176X_MODULE_PCLK_DEFAULT );
lpc176x_pin_select( LPC176X_PIN_UART_1_TXD, LPC176X_PIN_FUNCTION_01 );
lpc176x_pin_select( LPC176X_PIN_UART_1_RXD, LPC176X_PIN_FUNCTION_01 );
return true;
}
#ifdef LPC176X_CONFIG_UART_2
static bool lpc176x_uart2_probe(rtems_termios_device_context *ctx)
{
(void)ctx;
lpc176x_module_enable( LPC176X_MODULE_UART_2, LPC176X_MODULE_PCLK_DEFAULT );
lpc176x_pin_select( LPC176X_PIN_UART_2_TXD, LPC176X_PIN_FUNCTION_01 );
lpc176x_pin_select( LPC176X_PIN_UART_2_RXD, LPC176X_PIN_FUNCTION_01 );
return true;
}
#endif
#ifdef LPC176X_CONFIG_UART_3
static bool lpc176x_uart3_probe(rtems_termios_device_context *ctx)
{
(void)ctx;
lpc176x_module_enable( LPC176X_MODULE_UART_3, LPC176X_MODULE_PCLK_DEFAULT );
lpc176x_pin_select( LPC176X_PIN_UART_3_TXD, LPC176X_PIN_FUNCTION_10 );
lpc176x_pin_select( LPC176X_PIN_UART_3_RXD, LPC176X_PIN_FUNCTION_10 );
return true;
}
#endif
#ifdef LPC176X_CONFIG_CONSOLE
static ns16550_context lpc176x_uart_context_0 = {
.base = RTEMS_TERMIOS_DEVICE_CONTEXT_INITIALIZER("UART 0"),
.get_reg = lpc176x_uart_get_register,
.set_reg = lpc176x_uart_set_register,
.port = UART0_BASE_ADDR,
.irq = LPC176X_IRQ_UART_0,
.clock = LPC176X_PCLK,
.initial_baud = LPC176X_UART_BAUD,
.has_fractional_divider_register = true
};
#endif
#ifdef LPC176X_CONFIG_UART_1
static ns16550_context lpc176x_uart_context_1 = {
.base = RTEMS_TERMIOS_DEVICE_CONTEXT_INITIALIZER("UART 1"),
.get_reg = lpc176x_uart_get_register,
.set_reg = lpc176x_uart_set_register,
.port = UART1_BASE_ADDR,
.irq = LPC176X_IRQ_UART_1,
.clock = LPC176X_PCLK,
.initial_baud = LPC176X_UART_BAUD,
.has_fractional_divider_register = true
};
#endif
#ifdef LPC176X_CONFIG_UART_2
static ns16550_context lpc176x_uart_context_2 = {
.base = RTEMS_TERMIOS_DEVICE_CONTEXT_INITIALIZER("UART 2"),
.get_reg = lpc176x_uart_get_register,
.set_reg = lpc176x_uart_set_register,
.port = UART2_BASE_ADDR,
.irq = LPC176X_IRQ_UART_2,
.clock = LPC176X_PCLK,
.initial_baud = LPC176X_UART_BAUD,
.has_fractional_divider_register = true
};
#endif
#ifdef LPC176X_CONFIG_UART_3
static ns16550_context lpc176x_uart_context_3 = {
.base = RTEMS_TERMIOS_DEVICE_CONTEXT_INITIALIZER("UART 3"),
.get_reg = lpc176x_uart_get_register,
.set_reg = lpc176x_uart_set_register,
.port = UART3_BASE_ADDR,
.irq = LPC176X_IRQ_UART_3,
.clock = LPC176X_PCLK,
.initial_baud = LPC176X_UART_BAUD,
.has_fractional_divider_register = true
};
#endif
const console_device console_device_table[] = {
#ifdef LPC176X_CONFIG_CONSOLE
{
.device_file = "/dev/ttyS0",
.probe = console_device_probe_default,
.handler = &ns16550_handler_interrupt,
.context = &lpc176x_uart_context_0.base
},
#endif
#ifdef LPC176X_CONFIG_UART_1
{
.device_file = "/dev/ttyS1",
.probe = lpc176x_uart1_probe,
.handler = &ns16550_handler_interrupt,
.context = &lpc176x_uart_context_1.base
},
#endif
#ifdef LPC176X_CONFIG_UART_2
{
.device_file = "/dev/ttyS2",
.probe = lpc176x_uart2_probe,
.handler = &ns16550_handler_interrupt,
.context = &lpc176x_uart_context_2.base
},
#endif
#ifdef LPC176X_CONFIG_UART_3
{
.device_file = "/dev/ttyS3",
.probe = lpc176x_uart3_probe,
.handler = &ns16550_handler_interrupt,
.context = &lpc176x_uart_context_3.base
},
#endif
};
const size_t console_device_count = RTEMS_ARRAY_SIZE(console_device_table);