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1
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#include <stdio.h>
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2
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#include <stdlib.h>
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3
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#include <errno.h>
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4
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#include <string.h>
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5
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#include "sam3u.h"
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6
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#include "serial.h"
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7
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8
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int sam3uRead32(HANDLE fd, uint32_t address, uint32_t* value)
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9
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{
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10
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char str[32];
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11
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sprintf(str, "w%08X,4#", address);
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12
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if(serialPutS(fd, str) < 0)
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13
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return -1;
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14
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if(serialExpect(fd, "\n\r0x", 100) < 0)
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15
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return -1;
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16
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if(serialGetS(fd, str, 8, 100) < 0)
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17
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return -1;
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18
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str[8] = '\0';
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19
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errno = 0;
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20
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*value = strtoll(str, NULL, 16);
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21
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if(errno != 0) {
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22
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fprintf(stderr, "number conversion failed: %s", strerror(errno));
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23
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return -1;
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24
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}
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25
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if(serialExpect(fd, "\n\r>", 100) < 0)
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26
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return -1;
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27
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return 0;
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28
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}
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29
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30
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int sam3uRead16(HANDLE fd, uint32_t address, uint16_t* value)
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31
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{
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32
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char str[32];
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33
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sprintf(str, "h%08X,2#", address);
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34
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if(serialPutS(fd, str) < 0)
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35
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return -1;
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36
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if(serialExpect(fd, "\n\r0x", 100) < 0)
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37
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return -1;
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38
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if(serialGetS(fd, str, 4, 100) < 0)
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39
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return -1;
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40
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str[4] = '\0';
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41
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errno = 0;
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42
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*value = strtol(str, NULL, 16);
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43
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if(errno != 0) {
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44
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fprintf(stderr, "number conversion failed: %s", strerror(errno));
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45
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return -1;
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46
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}
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47
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if(serialExpect(fd, "\n\r>", 100) < 0)
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48
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return -1;
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49
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return 0;
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50
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}
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51
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52
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int sam3uRead8(HANDLE fd, uint32_t address, uint8_t* value)
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53
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{
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54
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char str[32];
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55
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sprintf(str, "o%08X,1#", address);
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56
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if(serialPutS(fd, str) < 0)
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57
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return -1;
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58
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if(serialExpect(fd, "\n\r0x", 100) < 0)
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59
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return -1;
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60
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if(serialGetS(fd, str, 2, 100) < 0)
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61
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return -1;
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62
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str[2] = '\0';
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63
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errno = 0;
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64
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*value = strtol(str, NULL, 16);
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65
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if(errno != 0) {
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66
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fprintf(stderr, "number conversion failed: %s", strerror(errno));
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67
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return -1;
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68
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}
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69
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if(serialExpect(fd, "\n\r>", 100) < 0)
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70
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return -1;
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71
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return 0;
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72
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}
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73
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74
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int sam3uWrite32(HANDLE fd, uint32_t address, uint32_t value)
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75
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{
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76
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char str[32];
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77
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sprintf(str, "W%08X,%08X#", address, value);
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78
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if(serialPutS(fd, str) < 0)
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79
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return -1;
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80
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if(serialExpect(fd, "\n\r>", 100) < 0)
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81
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return -1;
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82
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return 0;
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83
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}
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84
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85
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int sam3uWrite16(HANDLE fd, uint32_t address, uint16_t value)
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86
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{
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87
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char str[32];
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88
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sprintf(str, "H%08X,%04X#", address, value);
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89
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if(serialPutS(fd, str) < 0)
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90
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return -1;
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91
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if(serialExpect(fd, "\n\r>", 100) < 0)
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92
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return -1;
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93
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return 0;
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94
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}
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95
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96
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int sam3uWrite8(HANDLE fd, uint32_t address, uint8_t value)
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97
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{
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98
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char str[32];
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99
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sprintf(str, "O%08X,%02X#", address, value);
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100
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if(serialPutS(fd, str) < 0)
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101
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return -1;
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102
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if(serialExpect(fd, "\n\r>", 100) < 0)
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103
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return -1;
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104
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return 0;
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105
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}
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106
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107
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int sam3uRun(HANDLE fd, uint32_t address)
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108
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{
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109
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char str[32];
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110
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sprintf(str, "G%08X#", address);
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111
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if(serialPutS(fd, str) < 0)
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112
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return -1;
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113
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return 0;
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114
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}
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115
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116
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int sam3uDetect(HANDLE fd, uint32_t* chipID)
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117
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{
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118
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uint8_t c;
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119
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120
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while(serialGetC(fd, &c, 100) >= 0) ;
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121
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122
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if(serialPutS(fd, "T#") < 0)
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123
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return -1;
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124
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125
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if(serialExpect(fd, "\n\r\n\r>", 100) < 0) {
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126
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fprintf(stderr, "did not receive expected answer\n");
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127
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return -1;
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128
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}
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129
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130
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return sam3uRead32(fd, 0x400e0740, chipID);
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131
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}
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132
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133
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int sam3uReadUniqueID(HANDLE fd, int bank, uint8_t* uniqueID)
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134
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{
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135
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uint32_t regBase;
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136
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uint32_t flashBase;
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137
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uint32_t fsr;
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138
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int i;
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139
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140
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switch(bank) {
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141
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case 0:
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142
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regBase = 0x400e0800;
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143
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flashBase = 0x80000;
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144
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break;
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145
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case 1:
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146
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regBase = 0x400e0a00;
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147
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flashBase = 0x100000;
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148
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break;
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149
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default:
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150
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fprintf(stderr, "illegal flash bank");
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151
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return -1;
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152
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}
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153
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|
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154
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if(sam3uWrite32(fd, regBase + 0x04, 0x5a00000e) < 0)
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155
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return -1;
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156
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|
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157
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do {
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158
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if(sam3uRead32(fd, regBase + 0x08, &fsr) < 0)
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159
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return -1;
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160
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} while((fsr & 1) != 0);
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161
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|
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162
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for(i = 0; i < 16; i++) {
|
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163
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if(sam3uRead8(fd, flashBase + i, uniqueID + i) < 0)
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164
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return -1;
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165
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}
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166
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|
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167
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if(sam3uWrite32(fd, regBase + 0x04, 0x5a00000f) < 0)
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168
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return -1;
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169
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|
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170
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do {
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171
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if(sam3uRead32(fd, regBase + 0x08, &fsr) < 0)
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172
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return -1;
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173
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} while((fsr & 1) == 0);
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174
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175
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return 0;
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176
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}
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177
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178
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int sam3uFlash(HANDLE fd, int bank, const void* bin, size_t binSize)
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179
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{
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180
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uint32_t regBase;
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181
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uint32_t flashBase;
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182
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uint32_t fsr;
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183
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uint32_t flID;
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184
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uint32_t flSize;
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185
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uint32_t flPageSize;
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186
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uint32_t flNbPlane;
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187
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uint8_t buf[8192];
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188
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uint32_t ofs;
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189
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uint32_t todo;
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190
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uint32_t len;
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191
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uint32_t idx;
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192
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193
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switch(bank) {
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194
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case 0:
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195
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regBase = 0x400e0800;
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196
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flashBase = 0x80000;
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197
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break;
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198
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case 1:
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199
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regBase = 0x400e0a00;
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200
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flashBase = 0x100000;
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201
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break;
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202
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default:
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203
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fprintf(stderr, "illegal flash bank");
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204
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return -1;
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205
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}
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206
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|
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207
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printf("reading flash descriptor");
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208
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209
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if(sam3uWrite32(fd, regBase + 0x04, 0x5a000000) < 0)
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210
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goto error;
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211
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|
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212
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do {
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213
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if(sam3uRead32(fd, regBase + 0x08, &fsr) < 0)
|
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214
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goto error;
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215
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} while((fsr & 1) == 0);
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216
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|
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217
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|
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218
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if(sam3uRead32(fd, regBase + 0x0c, &flID) < 0)
|
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219
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goto error;
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220
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if(sam3uRead32(fd, regBase + 0x0c, &flSize) < 0)
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221
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goto error;
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222
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if(sam3uRead32(fd, regBase + 0x0c, &flPageSize) < 0)
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223
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goto error;
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224
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if(sam3uRead32(fd, regBase + 0x0c, &flNbPlane) < 0)
|
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225
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goto error;
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226
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|
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227
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printf(" -- ok\n");
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228
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printf("Flash ID: 0x%08x\n", flID);
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229
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printf("Flash size: %d Bytes\n", flSize);
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230
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printf("Page size: %d Bytes\n", flPageSize);
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231
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printf("Number of planes: %d\n", flNbPlane);
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232
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|
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233
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#if 1
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234
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printf("erasing flash"); fflush(stdout);
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235
|
|
|
236
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if(sam3uWrite32(fd, regBase + 0x04, 0x5a000005) < 0)
|
|
237
|
goto error;
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|
238
|
|
|
239
|
do {
|
|
240
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if(sam3uRead32(fd, regBase + 0x08, &fsr) < 0)
|
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241
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goto error;
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242
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} while((fsr & 1) == 0);
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243
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|
|
244
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printf(" -- ok\n");
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245
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#endif
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246
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|
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247
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ofs = 0;
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248
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for(todo = binSize; todo > 0; todo -= len) {
|
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249
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printf("flashing @ 0x%08x", ofs); fflush(stdout);
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250
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len = todo;
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251
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if(len > flPageSize)
|
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252
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len = flPageSize;
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253
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memset(buf, 0xff, sizeof(buf));
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254
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memcpy(buf, ((uint8_t*)bin) + ofs, len);
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255
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for(idx = 0; idx < flPageSize / 4; idx++) {
|
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256
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if(sam3uWrite32(fd, flashBase + ofs + (idx * 4), ((uint32_t*)buf)[idx]) < 0)
|
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257
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goto error;
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|
258
|
}
|
|
259
|
|
|
260
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if(sam3uWrite32(fd, regBase + 0x04, 0x5a000000 | ((ofs / flPageSize) << 8) | 0x03) < 0)
|
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261
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goto error;
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|
262
|
|
|
263
|
do {
|
|
264
|
if(sam3uRead32(fd, regBase + 0x08, &fsr) < 0)
|
|
265
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goto error;
|
|
266
|
} while((fsr & 1) == 0);
|
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267
|
|
|
268
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printf(" -- ok\n");
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|
269
|
|
|
270
|
ofs += flPageSize;
|
|
271
|
}
|
|
272
|
|
|
273
|
ofs = 0;
|
|
274
|
for(todo = binSize; todo > 0; todo -= len) {
|
|
275
|
printf("verifying @ 0x%08x", ofs); fflush(stdout);
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276
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len = todo;
|
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277
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if(len > flPageSize)
|
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278
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len = flPageSize;
|
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279
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|
|
280
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for(idx = 0; idx < flPageSize / 4; idx++) {
|
|
281
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if(sam3uRead32(fd, flashBase + ofs + (idx * 4), ((uint32_t*)buf) + idx) < 0)
|
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282
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goto error;
|
|
283
|
}
|
|
284
|
|
|
285
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if(memcmp(buf, ((uint8_t*)bin) + ofs, len) == 0)
|
|
286
|
printf(" -- ok\n");
|
|
287
|
else printf(" -- ERROR\n");
|
|
288
|
|
|
289
|
ofs += flPageSize;
|
|
290
|
}
|
|
291
|
|
|
292
|
printf("disabling SAM-BA"); fflush(stdout);
|
|
293
|
if(sam3uWrite32(fd, regBase + 0x04, 0x5a000000 | (1 << 8) | 0x0b) < 0)
|
|
294
|
goto error;
|
|
295
|
|
|
296
|
do {
|
|
297
|
if(sam3uRead32(fd, regBase + 0x08, &fsr) < 0)
|
|
298
|
goto error;
|
|
299
|
} while((fsr & 1) == 0);
|
|
300
|
|
|
301
|
printf(" -- ok\n");
|
|
302
|
|
|
303
|
return 0;
|
|
304
|
|
|
305
|
error:
|
|
306
|
printf(" -- ERROR\n");
|
|
307
|
return -1;
|
|
308
|
}
|
