1 | /*===============================================================*\ |
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2 | | Project: RTEMS generic MPC5200 BSP | |
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3 | +-----------------------------------------------------------------+ |
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4 | | Partially based on the code references which are named below. | |
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5 | | Adaptions, modifications, enhancements and any recent parts of | |
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6 | | the code are: | |
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7 | | Copyright (c) 2005 | |
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8 | | Embedded Brains GmbH | |
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9 | | Obere Lagerstr. 30 | |
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10 | | D-82178 Puchheim | |
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11 | | Germany | |
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12 | | rtems@embedded-brains.de | |
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13 | +-----------------------------------------------------------------+ |
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14 | | The license and distribution terms for this file may be | |
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15 | | found in the file LICENSE in this distribution or at | |
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16 | | | |
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17 | | http://www.rtems.com/license/LICENSE. | |
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18 | | | |
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19 | +-----------------------------------------------------------------+ |
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20 | | this file contains the nvram declarations | |
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21 | \*===============================================================*/ |
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22 | /***********************************************************************/ |
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23 | /* */ |
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24 | /* Module: nvram.h */ |
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25 | /* Date: 07/17/2003 */ |
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26 | /* Purpose: RTEMS M93C64-based header file */ |
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27 | /* */ |
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28 | /*---------------------------------------------------------------------*/ |
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29 | /* */ |
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30 | /* Description: M93C46 is a serial microwire EEPROM which contains */ |
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31 | /* 1Kbit (128 bytes/64 words) of non-volatile memory. */ |
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32 | /* The device can be configured for byte- or word- */ |
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33 | /* access. The driver provides a file-like interface */ |
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34 | /* to this memory. */ |
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35 | /* */ |
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36 | /* MPC5x00 PIN settings: */ |
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37 | /* */ |
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38 | /* PSC3_6 (output) -> MC93C46 serial data in (D) */ |
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39 | /* PSC3_7 (input) -> MC93C46 serial data out (Q) */ |
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40 | /* PSC3_8 (output) -> MC93C46 chip select input (S) */ |
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41 | /* PSC3_9 (output) -> MC93C46 serial clock (C) */ |
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42 | /* */ |
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43 | /*---------------------------------------------------------------------*/ |
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44 | /* */ |
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45 | /* Code */ |
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46 | /* References: DS1307-based Non-Volatile memory device driver */ |
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47 | /* Module: nvram.h */ |
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48 | /* Project: RTEMS 4.6.0pre1 / MCF5206Elite BSP */ |
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49 | /* Version 1.1 */ |
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50 | /* Date: 10/26/2001 */ |
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51 | /* Author: Victor V. Vengerov */ |
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52 | /* Copyright: Copyright (C) 2000 OKTET Ltd.,St.-Petersburg,Russia */ |
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53 | /* */ |
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54 | /* The license and distribution terms for this file may be */ |
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55 | /* found in the file LICENSE in this distribution or at */ |
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56 | /* http://www.OARcorp.com/rtems/license.html. */ |
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57 | /* */ |
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58 | /*---------------------------------------------------------------------*/ |
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59 | /* */ |
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60 | /* Partially based on the code references which are named above. */ |
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61 | /* Adaptions, modifications, enhancements and any recent parts of */ |
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62 | /* the code are under the right of */ |
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63 | /* */ |
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64 | /* IPR Engineering, Dachauer StraÃe 38, D-80335 MÃŒnchen */ |
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65 | /* Copyright(C) 2003 */ |
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66 | /* */ |
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67 | /*---------------------------------------------------------------------*/ |
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68 | /* */ |
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69 | /* IPR Engineering makes no representation or warranties with */ |
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70 | /* respect to the performance of this computer program, and */ |
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71 | /* specifically disclaims any responsibility for any damages, */ |
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72 | /* special or consequential, connected with the use of this program. */ |
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73 | /* */ |
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74 | /*---------------------------------------------------------------------*/ |
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75 | /* */ |
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76 | /* Version history: 1.0 */ |
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77 | /* */ |
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78 | /***********************************************************************/ |
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79 | |
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80 | #ifndef __NVRAM_H__ |
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81 | #define __NVRAM_H__ |
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82 | |
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83 | #ifdef __cplusplus |
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84 | extern "C" { |
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85 | #endif |
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86 | |
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87 | /* include <bsp.h> */ |
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88 | #include <bsp.h> |
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89 | |
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90 | /* Macros for TBL read access */ |
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91 | #define TBL_READ(count) __asm__ volatile ("mftb %0\n" : "=r" (count) : "0" (count)) |
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92 | #define TMBASE_CLOCK (G2_CLOCK/4) |
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93 | |
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94 | /* Simple usec delay function prototype */ |
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95 | void wait_usec(unsigned long); |
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96 | |
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97 | /* nvram_driver_initialize -- |
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98 | * Non-volatile memory device driver initialization. |
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99 | */ |
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100 | rtems_device_driver |
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101 | nvram_driver_initialize(rtems_device_major_number major, |
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102 | rtems_device_minor_number minor, |
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103 | void *arg); |
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104 | |
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105 | /* nvram_driver_open -- |
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106 | * Non-volatile memory device driver open primitive. |
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107 | */ |
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108 | rtems_device_driver |
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109 | nvram_driver_open(rtems_device_major_number major, |
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110 | rtems_device_minor_number minor, |
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111 | void *arg); |
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112 | |
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113 | /* nvram_driver_close -- |
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114 | * Non-volatile memory device driver close primitive. |
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115 | */ |
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116 | rtems_device_driver |
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117 | nvram_driver_close(rtems_device_major_number major, |
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118 | rtems_device_minor_number minor, |
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119 | void *arg); |
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120 | |
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121 | /* nvram_driver_read -- |
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122 | * Non-volatile memory device driver read primitive. |
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123 | */ |
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124 | rtems_device_driver |
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125 | nvram_driver_read(rtems_device_major_number major, |
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126 | rtems_device_minor_number minor, |
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127 | void *arg); |
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128 | |
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129 | /* nvram_driver_write -- |
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130 | * Non-volatile memory device driver write primitive. |
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131 | */ |
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132 | rtems_device_driver |
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133 | nvram_driver_write(rtems_device_major_number major, |
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134 | rtems_device_minor_number minor, |
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135 | void *arg); |
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136 | |
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137 | #ifdef __cplusplus |
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138 | } |
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139 | #endif |
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140 | |
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141 | #endif /* __NVRAM_H__ */ |
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