1 | /************************************************************************** |
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2 | * |
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3 | * Copyright (c) 2013 Alcatel-Lucent |
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4 | * |
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5 | * Alcatel Lucent licenses this file to You under the Apache License, |
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6 | * Version 2.0 (the "License"); you may not use this file except in |
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7 | * compliance with the License. A copy of the License is contained the |
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8 | * file LICENSE at the top level of this repository. |
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9 | * You may also obtain a copy of the License at: |
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10 | * |
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11 | * http://www.apache.org/licenses/LICENSE-2.0 |
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12 | * |
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13 | * Unless required by applicable law or agreed to in writing, software |
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14 | * distributed under the License is distributed on an "AS IS" BASIS, |
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15 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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16 | * See the License for the specific language governing permissions and |
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17 | * limitations under the License. |
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18 | * |
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19 | ************************************************************************** |
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20 | * |
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21 | * sd.c: |
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22 | * |
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23 | * This code is the user interface portion of the sd (compact flash) |
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24 | * command for uMon. |
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25 | * This command is intended to be the "interface" portion of some |
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26 | * other command (for example "fatfs"). Refer to the discussion in |
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27 | * fatfs.c for more details. |
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28 | * |
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29 | * Original author: Ed Sutter (ed.sutter@alcatel-lucent.com) |
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30 | * |
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31 | */ |
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32 | |
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33 | #include "config.h" |
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34 | #if INCLUDE_SD |
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35 | #include "stddefs.h" |
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36 | #include "genlib.h" |
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37 | #include "cli.h" |
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38 | #include "timer.h" |
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39 | #include "tfs.h" |
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40 | #include "tfsprivate.h" |
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41 | #include "sd.h" |
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42 | |
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43 | struct sdinfo sdInfoTbl[SD_DEVTOT]; |
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44 | char sdVerbose; |
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45 | static int sdInum; /* Interface number: to support multiple SD interfaces. |
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46 | * Typically this will always be zero. |
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47 | */ |
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48 | |
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49 | |
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50 | static struct sdcmd sdCardCmdTbl[] = { |
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51 | { GO_IDLE_STATE, R1_RLEN, R1 }, |
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52 | { SEND_OP_COND, R1_RLEN, R1 }, |
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53 | { SWITCH_FUNC, R1_RLEN, R1 }, |
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54 | { SEND_IF_COND, R7_RLEN, R7 }, |
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55 | { SEND_CSD, R1_RLEN, R1 }, |
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56 | { SEND_CID, R1_RLEN, R1 }, |
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57 | { STOP_TRANSMISSION, R1_RLEN, R1B }, |
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58 | { SEND_STATUS, R2_RLEN, R2 }, |
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59 | { SET_BLOCKLEN, R1_RLEN, R1 }, |
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60 | { READ_SINGLE_BLK, R1_RLEN, R1 }, |
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61 | { READ_MULTIPLE_BLK, R1_RLEN, R1 }, |
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62 | { WRITE_BLK, R1_RLEN, R1B }, |
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63 | { WRITE_MULTIPLE_BLK, R1_RLEN, R1B }, |
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64 | { PROGRAM_CSD, R1_RLEN, R1 }, |
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65 | { SET_WRITE_PROT, R1_RLEN, R1B }, |
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66 | { CLR_WRITE_PROT, R1_RLEN, R1B }, |
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67 | { SEND_WRITE_PROT, R1_RLEN, R1 }, |
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68 | { ERASE_WR_BLK_START_ADDR, R1_RLEN, R1 }, |
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69 | { ERASE_WR_BLK_END_ADDR, R1_RLEN, R1 }, |
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70 | { ERASE, R1_RLEN, R1B }, |
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71 | { LOCK_UNLOCK, R1_RLEN, R1 }, |
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72 | { APP_CMD, R1_RLEN, R1 }, |
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73 | { GEN_CMD, R1_RLEN, R1 }, |
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74 | { READ_OCR, R3_RLEN, R3 }, |
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75 | { CRC_ON_OFF, R1_RLEN, R1 }, |
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76 | { SD_SEND_OP_COND, R1_RLEN, R1 }, |
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77 | { -1,-1,-1 } |
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78 | }; |
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79 | |
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80 | char *SdHelp[] = { |
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81 | "Secure Digital Flash Interface", |
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82 | "[options] {operation} [args]...", |
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83 | #if INCLUDE_VERBOSEHELP |
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84 | "", |
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85 | "Options:", |
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86 | " -i ## interface # (default is 0)", |
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87 | " -v additive verbosity", |
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88 | "", |
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89 | "Operations:", |
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90 | " init [prefix]", |
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91 | " cmd {cmdnum} [arg]", |
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92 | " read {dest} {blk} {blktot}", |
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93 | " write {src} {blk} {blktot}", |
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94 | #endif |
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95 | 0 |
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96 | }; |
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97 | |
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98 | int |
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99 | SdCmd(int argc, char *argv[]) |
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100 | { |
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101 | char *cmd, *buf, *prefix, varname[16]; |
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102 | int opt, verbose, sdret, blknum, blkcnt; |
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103 | |
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104 | verbose = 0; |
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105 | while((opt=getopt(argc,argv,"i:v")) != -1) { |
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106 | switch(opt) { |
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107 | case 'i': |
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108 | sdInum = atoi(optarg); /* sticky */ |
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109 | break; |
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110 | case 'v': |
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111 | verbose++; |
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112 | break; |
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113 | default: |
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114 | return(CMD_PARAM_ERROR); |
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115 | } |
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116 | } |
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117 | |
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118 | if(argc < optind + 1) { |
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119 | return(CMD_PARAM_ERROR); |
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120 | } |
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121 | |
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122 | cmd = argv[optind]; |
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123 | |
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124 | if(sdInum >= SD_DEVTOT) { |
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125 | printf("Configured to support %d SD interface%s\n", |
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126 | SD_DEVTOT,SD_DEVTOT == 1 ? "" : "s"); |
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127 | return(CMD_FAILURE); |
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128 | } |
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129 | |
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130 | if(sdInstalled(sdInum) == 0) { |
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131 | printf("SDCard not installed\n"); |
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132 | return(CMD_FAILURE); |
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133 | } |
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134 | |
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135 | if(strcmp(cmd,"init") == 0) { |
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136 | sdret = sdInit(sdInum, verbose); |
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137 | if(sdret < 0) { |
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138 | printf("sdInit returned %d\n",sdret); |
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139 | return(CMD_FAILURE); |
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140 | } |
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141 | |
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142 | // If prefix is specified, then load shell variables: |
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143 | if(argc == optind+2) { |
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144 | prefix = argv[optind+1]; |
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145 | if(strlen(prefix)+4 > sizeof(varname)) { |
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146 | printf("prefix %s too long\n",prefix); |
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147 | return(CMD_PARAM_ERROR); |
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148 | } |
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149 | |
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150 | sprintf(varname,"%s_RD",prefix); |
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151 | shell_sprintf(varname,"0x%lx",(long)sdRead); |
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152 | |
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153 | sprintf(varname,"%s_WR",prefix); |
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154 | shell_sprintf(varname,"0x%lx",(long)sdWrite); |
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155 | } |
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156 | |
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157 | shell_sprintf("SD_BLKSIZE","0x%lx",SD_BLKSIZE); |
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158 | } else if(strcmp(cmd,"cmd") == 0) { |
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159 | ulong cmdarg; |
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160 | uchar resp[8]; |
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161 | int rtot, i, cmdnum; |
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162 | |
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163 | cmdarg = 0; |
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164 | memset((char *)resp,0xff,sizeof(resp)); |
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165 | |
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166 | if((argc != (optind+2)) && (argc != (optind+3))) { |
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167 | return(CMD_PARAM_ERROR); |
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168 | } |
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169 | |
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170 | cmdnum = (uchar)strtoul(argv[optind+1],0,0); |
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171 | if(argc == optind+3) { |
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172 | cmdarg = strtoul(argv[optind+2],0,0); |
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173 | } |
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174 | sdret = sdCardCmd(sdInum, cmdnum , cmdarg ,resp); |
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175 | if(sdret < 0) { |
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176 | printf("sdCardCmd returned %d\n",sdret); |
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177 | return(CMD_FAILURE); |
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178 | } |
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179 | |
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180 | rtot = sdCmdrlen(cmdnum); |
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181 | |
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182 | printf("CMD_%d resp: ",cmdnum); |
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183 | for(i=0; i<rtot; i++) { |
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184 | printf("%02x ",resp[i]); |
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185 | } |
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186 | printf("\n"); |
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187 | } else if(strcmp(cmd,"read") == 0) { |
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188 | if(argc != optind+4) { |
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189 | return(CMD_PARAM_ERROR); |
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190 | } |
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191 | |
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192 | buf = (char *)strtoul(argv[optind+1],0,0); |
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193 | blknum = strtoul(argv[optind+2],0,0); |
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194 | blkcnt = strtoul(argv[optind+3],0,0); |
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195 | |
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196 | sdret = sdRead(sdInum,buf,blknum,blkcnt); |
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197 | if(sdret < 0) { |
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198 | printf("sdRead returned %d\n",sdret); |
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199 | return(CMD_FAILURE); |
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200 | } |
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201 | } else if(strcmp(cmd,"write") == 0) { |
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202 | if(argc != optind+4) { |
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203 | return(CMD_PARAM_ERROR); |
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204 | } |
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205 | buf = (char *)strtoul(argv[optind+1],0,0); |
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206 | blknum = strtoul(argv[optind+2],0,0); |
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207 | blkcnt = strtoul(argv[optind+3],0,0); |
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208 | |
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209 | sdret = sdWrite(sdInum,buf,blknum,blkcnt); |
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210 | if(sdret < 0) { |
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211 | printf("sdWrite returned %d\n",sdret); |
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212 | return(CMD_FAILURE); |
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213 | } |
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214 | } else { |
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215 | printf("sd op <%s> not found\n",cmd); |
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216 | return(CMD_FAILURE); |
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217 | } |
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218 | |
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219 | return(CMD_SUCCESS); |
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220 | } |
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221 | |
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222 | /* sdCmdrlen(): |
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223 | * Given the command number, return the response length. |
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224 | */ |
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225 | int |
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226 | sdCmdrlen(int cmd) |
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227 | { |
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228 | struct sdcmd *sdp = sdCardCmdTbl; |
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229 | |
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230 | while(sdp->cmd != -1) { |
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231 | if(cmd == sdp->cmd) { |
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232 | return(sdp->rlen); |
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233 | } |
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234 | sdp++; |
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235 | } |
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236 | return(-1); |
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237 | } |
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238 | |
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239 | /* sdCmdrtype(): |
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240 | * Given the command number, return the response type. |
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241 | */ |
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242 | int |
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243 | sdCmdrtype(int cmd) |
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244 | { |
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245 | struct sdcmd *sdp = sdCardCmdTbl; |
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246 | |
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247 | while(sdp->cmd != -1) { |
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248 | if(cmd == sdp->cmd) { |
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249 | return(sdp->rtype); |
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250 | } |
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251 | sdp++; |
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252 | } |
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253 | return(-1); |
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254 | } |
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255 | |
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256 | static char *months[] = { |
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257 | "???", "Jan", "Feb", "Mar", "Apr", "May", "Jun", |
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258 | "Jul", "Aug", "Sep", "Oct", "Nov", "Dec", |
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259 | }; |
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260 | |
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261 | void |
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262 | sdShowCID(uchar *cid) |
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263 | { |
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264 | int year, mon; |
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265 | |
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266 | printf(" Manufacturer ID: x%02x\n", cid[0]); |
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267 | printf(" OEM/Application ID: x%02x%02x\n", cid[1],cid[2]); |
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268 | printf(" Product name: %c%c%c%c%c\n", |
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269 | cid[3],cid[4],cid[5],cid[6],cid[7]); |
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270 | printf(" Product rev: x%02x\n", cid[8]); |
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271 | printf(" Product serialno: x%02x%02x%02x%02x\n", |
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272 | cid[9],cid[10],cid[11],cid[12]); |
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273 | |
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274 | year = (((cid[13] & 0x0f) << 4) | ((cid[14] & 0xf0) >> 4)); |
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275 | mon = (cid[14] & 0x0f); |
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276 | if((mon < 1) || (mon > 12)) { |
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277 | mon = 0; |
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278 | } |
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279 | printf(" Manufactured: %s/%d\n",months[mon],2000+year); |
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280 | } |
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281 | |
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282 | void |
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283 | sdShowCSD(uchar *csd) |
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284 | { |
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285 | uchar csdver; |
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286 | long long capacity; |
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287 | int mult, csize, csm, rbl; |
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288 | int blocknr, blocklen, i; |
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289 | |
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290 | printf(" CSD Response: "); |
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291 | for(i=0; i<16; i++) { |
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292 | printf("%02x ",csd[i]); |
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293 | } |
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294 | printf("\n"); |
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295 | |
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296 | mult = csize = csm = rbl = 0; |
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297 | |
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298 | if((csd[0] & 0xc0) == 0) { |
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299 | csdver = 1; |
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300 | } else if((csd[0] & 0xc0) == 0x40) { |
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301 | csdver = 2; |
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302 | } else { |
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303 | printf("Invalid CSD structure type\n"); |
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304 | return; |
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305 | } |
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306 | |
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307 | printf(" CSD version %d.0\n",csdver); |
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308 | if(csdver == 1) { |
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309 | rbl = csd[5] & 0x0f; |
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310 | csize = ((csd[8] & 0xC0) >> 6); |
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311 | csize |= (csd[7] << 2); |
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312 | csize |= ((csd[6] & 0x03) << 10); |
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313 | csm = (csd[9] & 0x03); |
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314 | csm <<= 1; |
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315 | csm |= ((csd[10] & 0x80) >> 7); |
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316 | |
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317 | mult = (1 << (csm+2)); |
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318 | blocknr = (csize+1)*mult; |
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319 | blocklen = (1 << rbl); |
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320 | capacity = (long long)((long long)blocknr * (long long)blocklen); |
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321 | //printf(" (csm=%d, csize=%d, rbl=%d, mult=%d, blknr=%d, blkln=%d)\n", |
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322 | // csm, csize, rbl, mult, blocknr, blocklen); |
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323 | } else if(csdver == 2) { |
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324 | rbl = csd[5] & 0x0f; |
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325 | csize = (csd[7] & 0x3f) << 16; |
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326 | csize |= (csd[8] << 8); |
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327 | csize |= csd[9]; |
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328 | capacity = (long long)((long long)(csize + 1) * 512LL * 1024LL); |
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329 | } else { |
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330 | printf(" Unrecognized CSD version.\n"); |
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331 | return; |
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332 | } |
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333 | printf(" Card capacity: %lld bytes\n",capacity); |
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334 | } |
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335 | |
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336 | /* sdGenericStartup(): |
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337 | * Called by the interface-specific sdInit() code to do the generic |
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338 | * portion of the SD-Card initialization. |
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339 | * |
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340 | * Refer to the flowchart shown in figure 7.2 of the Simplified |
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341 | * Physical Layer Specification for an overview of the initialization. |
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342 | * |
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343 | * The card wakes up in SD bus mode, so the first thing we need to d |
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344 | * here (after the very basic initialization of the SPI pin config) is |
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345 | * to get the card into SPI mode. |
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346 | * By default, the card assumes CRC checking is disabled. The field used |
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347 | * to hold the CRC is still part of the protocol, but it is ignored. If |
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348 | * needed, the master can turn it on with CMD59. |
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349 | */ |
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350 | int |
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351 | sdGenericStartup(int interface) |
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352 | { |
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353 | ulong hcs; |
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354 | uchar resp[16], cid[16], csd[16]; |
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355 | int retry, rc, version; |
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356 | struct elapsed_tmr tmr; |
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357 | int check_pattern_retry = 2; |
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358 | |
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359 | sdInfoTbl[interface].initialized = 0; |
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360 | |
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361 | rc = 0; |
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362 | check_pattern_retry = 2; |
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363 | |
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364 | // Start with at least 74 clocks to powerup the card... |
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365 | sdPowerup(10); |
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366 | |
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367 | // Put card in SPI mode: |
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368 | |
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369 | // This command always seems to fail on the first try after a |
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370 | // powerup, so give it a few attempts... |
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371 | for(retry=0; retry<3; retry++) { |
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372 | if((rc = sdCardCmd(interface,GO_IDLE_STATE,0,resp)) != -1) { |
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373 | break; |
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374 | } |
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375 | } |
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376 | |
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377 | if(retry == 3) { |
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378 | printf("\nSD GO_IDLE_STATE failed, card installed?\n"); |
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379 | return(-1); |
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380 | } |
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381 | |
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382 | // According to Physical Layer Simplified Spec (PLSS), it is mandatory |
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383 | // for the host compliant to Version 2.00 to send CMD8 (SEND_IF_COND). |
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384 | // If CMD8 is not recognized (illegal command), then we can assume that |
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385 | // the card is version 1.00. |
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386 | // The argument sent with the command is defined in section 4.3.13 |
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387 | // of the PLSS. |
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388 | // The spec says that if the check-patter test fails, to retry... |
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389 | do { |
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390 | if((rc = sdCardCmd(interface,SEND_IF_COND,SEND_IF_COND_ARG,resp)) == -1) { |
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391 | return(-1); |
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392 | } |
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393 | |
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394 | if(resp[0] & R1_ILLEGAL_CMD) { |
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395 | version = VERSION_10; |
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396 | hcs = 0; |
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397 | break; // Check pattern only applies to V2 and later |
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398 | } else { |
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399 | // The card should echo back the VHS and check pattern... |
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400 | if(resp[3] != VHS27_36) { |
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401 | if(sdVerbose & 2) { |
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402 | printf("SDCARD not 3.3v compliant!\n"); |
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403 | } |
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404 | return(-1); |
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405 | } |
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406 | if(resp[4] != CHECK_PATTERN) { |
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407 | if(--check_pattern_retry <= 0) { |
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408 | if(sdVerbose & 2) { |
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409 | printf("SDCARD check-pattern failed.\n"); |
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410 | } |
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411 | return(-1); |
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412 | } |
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413 | } |
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414 | version = VERSION_20; |
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415 | hcs = HCS; |
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416 | } |
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417 | } while(resp[4] != CHECK_PATTERN); |
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418 | |
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419 | // Read OCR to make sure the card will run at 3.3v... |
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420 | if((rc = sdCardCmd(interface,READ_OCR,hcs,resp)) == -1) { |
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421 | return(-1); |
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422 | } |
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423 | |
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424 | if((resp[2] & MSK_OCR_33) != MSK_OCR_33) { |
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425 | if(sdVerbose & 2) { |
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426 | printf("SDCARD: OCR_33 failed, card isn't 3.3v capable\n"); |
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427 | } |
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428 | return(-1); |
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429 | } |
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430 | |
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431 | // Wait for card to complete initialization: |
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432 | startElapsedTimer(&tmr,1000); |
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433 | while(1) { |
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434 | if((rc = sdCardCmd(interface,SD_SEND_OP_COND,HCS,resp)) == -1) { |
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435 | return(-1); |
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436 | } |
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437 | if((resp[0] & R1_IDLE) == 0) { |
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438 | break; |
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439 | } |
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440 | if(msecElapsed(&tmr)) { |
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441 | printf("SDCARD: gaveup waiting for init to complete.\n"); |
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442 | return(-1); |
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443 | } |
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444 | } |
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445 | |
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446 | if(version == VERSION_20) { |
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447 | // Get CCS... |
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448 | if((rc = sdCardCmd(interface,READ_OCR,0,resp)) == -1) { |
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449 | return(-1); |
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450 | } |
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451 | } else { |
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452 | if((rc = sdCardCmd(interface,SET_BLOCKLEN,SD_BLKSIZE,resp)) == -1) { |
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453 | return(-1); |
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454 | } |
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455 | } |
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456 | |
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457 | if(sdVerbose) { |
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458 | printf("SD/SPI Initialized (version %s)\n", |
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459 | version == VERSION_10 ? "1.0" : ">=2.0"); |
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460 | } |
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461 | |
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462 | sdInfoTbl[interface].cardversion = version; |
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463 | |
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464 | sdReadCxD(interface,cid,SEND_CID); |
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465 | if(sdVerbose) { |
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466 | sdShowCID(cid); |
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467 | } |
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468 | sdReadCxD(interface,csd,SEND_CSD); |
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469 | if(sdVerbose) { |
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470 | sdShowCSD(csd); |
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471 | } |
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472 | |
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473 | if((csd[0] & 0xc0) == 0x00) { |
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474 | sdInfoTbl[interface].highcapacity = 0; |
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475 | } else { |
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476 | sdInfoTbl[interface].highcapacity = 1; |
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477 | } |
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478 | |
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479 | sdInfoTbl[interface].initialized = 1; |
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480 | return(0); |
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481 | } |
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482 | |
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483 | /* Got this crc7 code off the web... |
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484 | * The original text claimed "use-as-you-wish"... |
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485 | */ |
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486 | #define POLYNOM (0x9) // polynomical value to XOR when 1 pops out. |
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487 | |
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488 | static unsigned char |
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489 | Encode(uchar seed, uchar input, uchar depth) |
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490 | { |
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491 | uchar regval, count, cc; |
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492 | |
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493 | regval = seed; |
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494 | cc = input; |
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495 | |
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496 | for(count = depth ; count-- ; cc <<= 1) { |
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497 | regval = (regval << 1) + ((cc & 0x80) ? 1 : 0); |
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498 | if(regval & 0x80) { |
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499 | regval ^= POLYNOM; |
---|
500 | } |
---|
501 | } |
---|
502 | return(regval & 0x7f); // return lower 7 bits of CRC as value to use. |
---|
503 | } |
---|
504 | |
---|
505 | uchar |
---|
506 | crc7(uchar seed, uchar *buf, int len) |
---|
507 | { |
---|
508 | int i; |
---|
509 | uchar crc; |
---|
510 | |
---|
511 | crc = seed; |
---|
512 | for(i = 0; i < len; i++) { |
---|
513 | crc = Encode(crc, buf[i], 8); |
---|
514 | } |
---|
515 | |
---|
516 | crc = Encode(crc,0,7); |
---|
517 | crc = (crc << 1) + 1; |
---|
518 | return(crc); |
---|
519 | } |
---|
520 | |
---|
521 | #ifdef INCLUDE_SD_DUMMY_FUNCS |
---|
522 | /* This code is included here just for simulating the SD |
---|
523 | * interface (temporarily if a real one isn't ready. In a real system, |
---|
524 | * the INCLUDE_SD_DUMMY_FUNCS definition would be off. |
---|
525 | */ |
---|
526 | |
---|
527 | int |
---|
528 | sdInit(int interface, int verbose) |
---|
529 | { |
---|
530 | if(interface != 0) { |
---|
531 | return(-1); |
---|
532 | } |
---|
533 | |
---|
534 | return(0); |
---|
535 | } |
---|
536 | |
---|
537 | int |
---|
538 | sdRead(int interface, char *buf, int blk, int blkcnt) |
---|
539 | { |
---|
540 | char *from; |
---|
541 | int size; |
---|
542 | |
---|
543 | if(interface != 0) { |
---|
544 | return(-1); |
---|
545 | } |
---|
546 | |
---|
547 | from = (char *)(blk * SD_BLKSIZE); |
---|
548 | size = blkcnt * SD_BLKSIZE; |
---|
549 | memcpy(buf,from,size); |
---|
550 | return(0); |
---|
551 | } |
---|
552 | |
---|
553 | int |
---|
554 | sdWrite(int interface, char *buf, int blk, int blkcnt) |
---|
555 | { |
---|
556 | char *to; |
---|
557 | int size; |
---|
558 | |
---|
559 | if(interface != 0) { |
---|
560 | return(-1); |
---|
561 | } |
---|
562 | |
---|
563 | to = (char *)(blk * SD_BLKSIZE); |
---|
564 | size = blkcnt * SD_BLKSIZE; |
---|
565 | memcpy(to,buf,size); |
---|
566 | return(0); |
---|
567 | } |
---|
568 | |
---|
569 | /* sdInstalled(): |
---|
570 | * Return 1 if installed, 0 if not installed or -1 if |
---|
571 | * the hardware can't detect installation. |
---|
572 | */ |
---|
573 | int |
---|
574 | sdInstalled(int interface) |
---|
575 | { |
---|
576 | return(-1); |
---|
577 | } |
---|
578 | |
---|
579 | #endif |
---|
580 | |
---|
581 | #endif |
---|