source: rtems/c/src/lib/libbsp/arm/lpc176x/console/console-config.c @ 6ec438e

4.115
Last change on this file since 6ec438e was 6ec438e, checked in by Sebastian Huber <sebastian.huber@…>, on Oct 7, 2014 at 6:29:16 AM

libchip/serial: Add alternative NS16550 driver

Use the Termios device API.

  • Property mode set to 100644
File size: 3.7 KB
Line 
1/**
2 * @file
3 *
4 * @ingroup lpc176x
5 *
6 * @brief Console configuration.
7 */
8
9/*
10 * Copyright (c) 2008-2014 embedded brains GmbH.  All rights reserved.
11 *
12 *  embedded brains GmbH
13 *  Dornierstr. 4
14 *  82178 Puchheim
15 *  Germany
16 *  <rtems@embedded-brains.de>
17 *
18 * The license and distribution terms for this file may be
19 * found in the file LICENSE in this distribution or at
20 * http://www.rtems.com/license/LICENSE.
21 */
22
23#include <libchip/ns16550.h>
24
25#include <bsp.h>
26#include <bsp/io.h>
27#include <bsp/irq.h>
28#include <bsp/console-termios.h>
29
30/**
31 * @brief Gets the uart register according to the current address.
32 *
33 * @param  addr Register address.
34 * @param  i Index register.
35 * @return  Uart register.
36 */
37static inline uint8_t lpc176x_uart_get_register(
38  const uintptr_t addr,
39  const uint8_t   i
40)
41{
42  volatile uint32_t *reg = (volatile uint32_t *) addr;
43
44  return (uint8_t) reg[ i ];
45}
46
47/**
48 * @brief Sets the uart register address according to the value passed.
49 *
50 * @param  addr Register address.
51 * @param  i Index register.
52 * @param val Value to set.
53 */
54static inline void lpc176x_uart_set_register(
55  const uintptr_t addr,
56  const uint8_t   i,
57  const uint8_t   val
58)
59{
60  volatile uint32_t *reg = (volatile uint32_t *) addr;
61
62  reg[ i ] = val;
63}
64
65#ifdef LPC176X_CONFIG_CONSOLE
66static ns16550_context lpc176x_uart_context_0 = {
67  .base = RTEMS_TERMIOS_DEVICE_CONTEXT_INITIALIZER("UART 0"),
68  .get_reg = lpc176x_uart_get_register,
69  .set_reg = lpc176x_uart_set_register,
70  .port = UART0_BASE_ADDR,
71  .irq = LPC176X_IRQ_UART_0,
72  .clock = LPC176X_PCLK,
73  .initial_baud = LPC176X_UART_BAUD,
74  .has_fractional_divider_register = true
75};
76#endif
77
78#ifdef LPC176X_CONFIG_UART_1
79static ns16550_context lpc176x_uart_context_1 = {
80  .base = RTEMS_TERMIOS_DEVICE_CONTEXT_INITIALIZER("UART 1"),
81  .get_reg = lpc176x_uart_get_register,
82  .set_reg = lpc176x_uart_set_register,
83  .port = UART1_BASE_ADDR,
84  .irq = LPC176X_IRQ_UART_1,
85  .clock = LPC176X_PCLK,
86  .initial_baud = LPC176X_UART_BAUD,
87  .has_fractional_divider_register = true
88};
89#endif
90
91#ifdef LPC176X_CONFIG_UART_2
92static ns16550_context lpc176x_uart_context_2 = {
93  .base = RTEMS_TERMIOS_DEVICE_CONTEXT_INITIALIZER("UART 2"),
94  .get_reg = lpc176x_uart_get_register,
95  .set_reg = lpc176x_uart_set_register,
96  .port = UART2_BASE_ADDR,
97  .irq = LPC176X_IRQ_UART_2,
98  .clock = LPC176X_PCLK,
99  .initial_baud = LPC176X_UART_BAUD,
100  .has_fractional_divider_register = true
101};
102#endif
103
104#ifdef LPC176X_CONFIG_UART_3
105static ns16550_context lpc176x_uart_context_3 = {
106  .base = RTEMS_TERMIOS_DEVICE_CONTEXT_INITIALIZER("UART 3"),
107  .get_reg = lpc176x_uart_get_register,
108  .set_reg = lpc176x_uart_set_register,
109  .port = UART3_BASE_ADDR,
110  .irq = LPC176X_IRQ_UART_3,
111  .clock = LPC176X_PCLK,
112  .initial_baud = LPC176X_UART_BAUD,
113  .has_fractional_divider_register = true
114};
115#endif
116
117const console_device console_device_table[] = {
118  #ifdef LPC176X_CONFIG_CONSOLE
119    {
120      .device_file = "/dev/ttyS0",
121      .probe = console_device_probe_default,
122      .handler = &ns16550_handler_interrupt,
123      .context = &lpc176x_uart_context_0.base
124    },
125  #endif
126  #ifdef LPC176X_CONFIG_UART_1
127    {
128      .device_file = "/dev/ttyS1",
129      .probe = ns16550_probe,
130      .handler = &ns16550_handler_interrupt,
131      .context = &lpc176x_uart_context_1.base
132    },
133  #endif
134  #ifdef LPC176X_CONFIG_UART_2
135    {
136      .device_file = "/dev/ttyS2",
137      .probe = ns16550_probe,
138      .handler = &ns16550_handler_interrupt,
139      .context = &lpc176x_uart_context_2.base
140    },
141  #endif
142  #ifdef LPC176X_CONFIG_UART_3
143    {
144      .device_file = "/dev/ttyS3",
145      .probe = ns16550_probe,
146      .handler = &ns16550_handler_interrupt,
147      .context = &lpc176x_uart_context_3.base
148    },
149  #endif
150};
151
152const size_t console_device_count = RTEMS_ARRAY_SIZE(console_device_table);
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