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annotate src/cs/drivers/drv_app/ffs/board/HISTORY @ 0:b6a5e36de839

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src/cs: initial import from Magnetite
author Mychaela Falconia <falcon@freecalypso.org>
date Sun, 15 Jul 2018 04:39:26 +0000
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b6a5e36de839 src/cs: initial import from Magnetite
Mychaela Falconia <falcon@freecalypso.org>
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1 Brief Revision History of FFS
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2 ============================================================
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3 Revision 5.27:
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4
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5 - API change:
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6 Made change request from TIF.
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7
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8 Renamed functions:
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9 ffs_init() to ffs_initialize()
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10 ffs_env_init/start/stop/kill() to ffs_init/start/stop/kill() (in ffs_env.[ch])
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11
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12 NOTE: Because of this API change are we not backward compatible with earlier FFS versions!
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14
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15 Revision 5.18:
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17 - Implemented new ffs protocol. Improvements:
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19 * More intelligible.
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20 * No static testmode buffer (Before 8kB!)
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21 * Stream interface (Only flash size limit for file transfer)
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22 * Use blocking functions in target (waits for data to be written etc)
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23
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24 The new protocol require etm v0.127 or above in target.
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25
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26 Note the "old" protocol is still supported.
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27
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28 Revision 5.14:
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29
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30 - BUGFIX: http://bugs.tidk.ti.com/bugs/show_bug.cgi?id=313.
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31 A sudden power off can in a rare case trikker FFS to use the last free
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32 block. Because of the missing free block is it not possible to make a
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33 garbage collection/reclaim data! (no further write will be possible!).
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34
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35 Revision 5.6:
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37 - Implemented a request id. On success, all non-blocking functions return a unique request identifier (request_id). This same id is returned in the associated request confirm message. This feature can be used to pair requests with confirmations when using the non-blocking function interface.
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38
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39 Revision 4.6:
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40
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41 - Made support for random access to a file (open in RDWR mode).
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42
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43 - Removed API functions ffs_xstat() and ffs_xfstat() because its function is covered by ffs_xlstat().
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44
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45 - Renamed ffs_linkstat() to ffs_lstat() (POSIX alike).
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46
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47 - Made a non blocking version of ffs_seek() because it can now block the caller in several second because it sometimes need to flush the stream buffer.
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48
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49 - Made new API function ffs_fdatasync() which makes it possible to
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50 flush the stream buffer ad any time.
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51
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52 Revision 3.4:
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53
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54 - Changed function ffs_file_write() so it automatil split one huge write up
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55 in several small chunks instead of one big chunk. This makes support of
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56 files that is bigger than one flash block.
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57
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58 Revision 3.2:
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59
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60 - Implemented ffs_truncate() and ffs_ftruncate(). These functions make it
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61 possible to truncate a file by the file name or the file descriptor.
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62
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63 Revision 3.1:
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64
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65 - Changed ffs_stat() function. Implemented ffs_xlstat() and ffs_fstat().
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66
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67 Revision 2.15:
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68
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69 - Implemented ffs_rename(). This function makes it possible to move and rename
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70 files, dirs and symlinks.
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71
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72 Revision 2.10:
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73
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74 - Implemented stream functions: ffs_open, ffs_close, ffs_read, ffs_write and
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75 ffs_seek.
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76
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77 Revision 1.29:
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78
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79 - The copying of the single bank driver code to RAM is now handled
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80 internally by ffsdrv_init(). This means linker dependency is gone and the
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81 linker file does not need to have any special sections for the FFS
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82 single-bank driver code. Actually, it must NOT have the special sections!
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84
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85 Revision 1.28:
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86
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87 - Updated code for Calypso chipset and RiViera Frame.
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90 Revision 1.27:
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91
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92 - Intel single-bank driver bugfixed, tested and working.
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94
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95 Revision 1.24:
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96
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97 - Implemented Intel dual/multi-bank and single-bank flash support. Untested!
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98 - Changed ffs_fread() and ffs_readlink() semantics and prototype. They now
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99 return an integer denoting the number of bytes actually read.
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100 - Changed ffs_opendir() semantics and prototype. It now returns an integer
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101 denoting the number of entries in the directory.
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102 - Replaced 'filesize_t' by 'int' in FFS API functions.
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103 - Increased FFS_INODES_MAX_DEFAULT from 512 to 1024. This means that FFS can
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104 contain up 1024/2 = 512 objects.
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106
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107 Revision 1.23:
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108
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109 - Implemented ffs_query(Q_DEV_DRIVER) returning the flash device driver
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110 identifier.
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113 Revision 1.22:
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114
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115 - Implemented AMD single-bank flash support.
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118 Revision 1.21:
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119
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120 - Changed ffs_fcontrol() prototype such that <param> argument is 'int'
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121 instead of 'uint16'.
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124 Revision 1.20:
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125
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126 - Only one (auto-generated) target file exists now, namely target.c which
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127 replaces previous targetffs.c and taskffs.c.
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128 - Implemented ffs_query(Q_DEV_BASE) returning the start address of FFS in the
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129 flash device.
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130 - Removed PCM functionality from testmode ffs protocol (tmffs.c).
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131
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132
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133 Revision 1.19:
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134
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135 - Corrected bug in ffs_query(Q_BYTES_FREE); it did not subtract number of
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136 bytes lost.
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137
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138
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139 Revision 1.18:
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140
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141 - Implemented call-back functionality. All modify functions have a sibling
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142 function with same name but suffix '_nb' for 'non-blocking'. This sibling
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143 function has an additional argument specifying how the caller want the
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144 result of the operation communicated back; either by mail or call-back
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145 function. This way, *all* error codes can be returned and caller knows when
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146 data has actually been written/committed to the actual device memory.
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147
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148
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149 Revision 1.12:
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150
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151 - Replaced old crash recovery code with true journalling system. The old
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152 crash recovery code had in a few rare scenarios the risk of rendering FFS
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153 useless upon a power-fail.
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154
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155
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156 Revision 1.9:
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157
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158 - ffs_preformat() now calls the user defined function ffs_is_modifiable()
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159 with empty string (not a NULL string). This means that permission to
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160 re-formatting ffs can be controlled.
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161
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162
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163 Revision 1.3:
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164
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165 - Implemented device wear-levelling.
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166
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167
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168 Revision 0.517:
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169
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170 - Added HISTORY file.
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171 - Flash driver updated to take flash base address into account when doing
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Mychaela Falconia <falcon@freecalypso.org>
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172 writes and erasures (not when auto-detecting device).
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173 - Moved task.[hc] from ffs.mak to ffsdrv.mak. These files are now included
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174 in object releases.
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175
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176
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177 Revision 0.516:
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178
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179 - Renamed ffs_config.mak to ffsdrv.mak.
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180 - Splitted pcm.c into pcmcode.c and pcmdata.c. pcmcode.c contains only pcm
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181 function code. pcmdata.c contains only pcm data tables.
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182 - Corrected bug in pcm_WriteRecord().
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183
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184
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185 Revision 0.515:
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186
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187 - Corrected possible bug in erase suspend; it did not check for
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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188 completion. Bug has never been observed in practice.
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189
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190
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191 Revision 0.514:
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192
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193 - Added support of flash devices: AMD Am29DL161T and Fujitsu MBM29DL16xT.
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194
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195
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196 Revision 0.512:
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197
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198 - Added flash device auto-detection. This *only* works for flash devices
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parents:
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199 mapped to address zero! Remember that both ffs_flash_manufact and
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200 ffs_flash_device (in cfgffs.c) must be zero in order for auto-detection to
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parents:
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201 be enabled.
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202
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203
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204 Revision 0.510:
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205
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206 - Added low-level driver for SST flash devices.
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207 - Added support of flash device: SST SST36VF1601.
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208 - Added ffs_query(Q_FFS_FORMAT_WRITE) and renamed Q_FFS_FORMAT to
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
209 Q_FFS_FORMAT_READ. With this, we can both query the ffs format read from
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
210 ffs as well as the format version written on a fresh format. This can be
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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211 used to determine compatibilty between ffs formats.
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Mychaela Falconia <falcon@freecalypso.org>
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212 - Corrected non-critical bug in ffs_remove().