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annotate gsm-fw/cfgmagic/feature.pirhack-ffs @ 250:3d88461d8284

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beginning of TIFFS IVA documentation
author Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
date Fri, 31 Jan 2014 07:37:39 +0000
parents 4d706a4134b0
children 6e7410f7975c
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1 # Concerning the FFS, there is one fundamental difference between the gtamodem
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2 # and pirelli targets: whereas the content of Openmoko's modem FFS is directly
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3 # fit for reuse by our fw (resulting from the phylogenetic proximity of the two
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4 # firmwares), Pirelli's original FFS has the same format, but its content is so
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5 # different that trying to reuse it would be more trouble than it is worth.
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6 # (And Pirelli's FFS contains no IMEI or RF calibration data to boot!)
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7 #
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8 # Therefore, I (FC developer Michael Spacefalcon) have decided that when
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9 # targeting the Pirelli, it would be better for us to start from our own blank
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10 # FFS than to deal with the original. This feature pirhack-ffs configures our
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11 # GSM fw to put its FFS in the last 7 256 KiB sectors of the 2nd flash chip
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12 # select: these sectors form an independent read/write bank, and are not used
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13 # for FFS by Pirelli's fw, eliminating the possibility of accidental FFS
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14 # cross-contamination between the two very different firmwares on the same hw.
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15 #
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16 # If you want to use some other sectors for FC FFS on the Pirelli, invoke
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17 # feature pirhack-ffs first, then change CONFIG_PIRHACK_FFS_START and
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18 # CONFIG_PIRHACK_FFS_NBLOCKS to taste.
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19
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20 if [ $TARGET != pirelli ]
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21 then
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22 echo \
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23 "Error: feature pirhack-ffs is applicable only to target pirelli" 1>&2
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24 exit 1
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25 fi
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26
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27 FFS_IN_RAM=0
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28 CONFIG_PIRHACK_FFS=1
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29 CONFIG_PIRHACK_FFS_START=24
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30 CONFIG_PIRHACK_FFS_NBLOCKS=7
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31 CONFIG_FLASH_WRITE=1
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32 export_to_c CONFIG_PIRHACK_FFS
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33 export_to_c CONFIG_PIRHACK_FFS_START
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34 export_to_c CONFIG_PIRHACK_FFS_NBLOCKS
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35 export_to_c CONFIG_FLASH_WRITE