FreeCalypso > hg > fc-magnetite

annotate src/cs/drivers/drv_app/ffs/board/HISTORY @ 624:012028896cfb

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FFS dev.c, Leonardo target: Fujitsu MB84VF5F5F4J2 #if 0'ed out The FFS code we got from TI/Openmoko had a stanza for "Fujitsu MB84VF5F5F4J2 stacked device", using a fake device ID code that would need to be patched manually into cfgffs.c (suppressing and overriding autodetection) and using an FFS base address in the nCS2 bank, indicating that this FFS config was probably meant for the MCP version of Leonardo which allows for 16 MiB flash with a second bank on nCS2. We previously had this FFS config stanza conditionalized under CONFIG_TARGET_LEONARDO because the base address contained therein is invalid for other targets, but now that we actually have a Leonardo build target in FC Magnetite, I realize that the better approach is to #if 0 out this stanza altogether: it is already non-functional because it uses a fake device ID code, thus it is does not add support for more Leonardo board variants, instead it is just noise.
author Mychaela Falconia <falcon@freecalypso.org>
date Sun, 22 Dec 2019 21:24:29 +0000
parents 945cf7f506b2
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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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5 - API change:
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6 Made change request from TIF.
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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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12 NOTE: Because of this API change are we not backward compatible with earlier FFS versions!
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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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24 The new protocol require etm v0.127 or above in target.
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26 Note the "old" protocol is still supported.
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28 Revision 5.14:
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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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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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39 Revision 4.6:
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41 - Made support for random access to a file (open in RDWR mode).
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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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45 - Renamed ffs_linkstat() to ffs_lstat() (POSIX alike).
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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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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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52 Revision 3.4:
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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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58 Revision 3.2:
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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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63 Revision 3.1:
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65 - Changed ffs_stat() function. Implemented ffs_xlstat() and ffs_fstat().
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67 Revision 2.15:
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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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72 Revision 2.10:
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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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77 Revision 1.29:
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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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85 Revision 1.28:
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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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92 - Intel single-bank driver bugfixed, tested and working.
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95 Revision 1.24:
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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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107 Revision 1.23:
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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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115 - Implemented AMD single-bank flash support.
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118 Revision 1.21:
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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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122
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123
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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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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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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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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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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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209 Q_FFS_FORMAT_READ. With this, we can both query the ffs format read from
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210 ffs as well as the format version written on a fresh format. This can be
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211 used to determine compatibilty between ffs formats.
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212 - Corrected non-critical bug in ffs_remove().