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