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annotate artifacts/om-debug-board-v3 @ 70:09da7db45dce

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doc/FTDI-EEPROM-format: document FT232R specifics
author Mychaela Falconia <falcon@freecalypso.org>
date Sun, 24 Sep 2023 21:31:37 +0000
parents 9ca4f9fa415b
children
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9ca4f9fa415b artifacts: import from freecalypso-hwlab/eeproms/dumps
Mychaela Falconia <falcon@freecalypso.org>
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1 # Openmoko's custom debug board for their Neo1973 and Neo FreeRunner
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Mychaela Falconia <falcon@freecalypso.org>
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2 # smartphones is an important piece of history; to the best of my
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Mychaela Falconia <falcon@freecalypso.org>
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3 # (Mychaela's) understanding, it was one of the first FT2232x devices
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Mychaela Falconia <falcon@freecalypso.org>
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4 # to formalize the idea of having the kernel create only one ttyUSB
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Mychaela Falconia <falcon@freecalypso.org>
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5 # device for Channel B (which is a standard UART), leaving Channel A
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6 # untouched for userspace applications like OpenOCD. The feat is
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Mychaela Falconia <falcon@freecalypso.org>
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7 # accomplished by giving the device a custom USB ID (the one used by
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Mychaela Falconia <falcon@freecalypso.org>
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8 # OM for this debug board is 1457:5118), and teaching the ftdi_sio
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Mychaela Falconia <falcon@freecalypso.org>
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9 # driver in the Linux kernel to create only one ttyUSB device for
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Mychaela Falconia <falcon@freecalypso.org>
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10 # such USD IDs.
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Mychaela Falconia <falcon@freecalypso.org>
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11 #
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Mychaela Falconia <falcon@freecalypso.org>
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12 # What follows is a dump of the EEPROM made from the debug board which
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Mychaela Falconia <falcon@freecalypso.org>
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13 # I got with my FreeRunner back in 2011; it appears to have a per-unit
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Mychaela Falconia <falcon@freecalypso.org>
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14 # serial number string. The FTDI chip is FT2232D and the EEPROM is a 93C56.
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Mychaela Falconia <falcon@freecalypso.org>
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15
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16 00: 0802 1457 5118 0500 3280 0000 0200 1296
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17 10: 30A8 12D8 0056 0000 0000 0000 0000 0000
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18 20: 0000 0000 0000 0000 0000 0000 0000 0000
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19 30: 0000 0000 0000 0000 0000 0000 0000 0000
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20 40: 0000 0000 0000 0000 0000 0000 0000 0000
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21 50: 0000 0000 0000 0000 0000 0000 0000 0000
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22 60: 0000 0000 0000 0000 0000 0000 0000 0000
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23 70: 0000 0000 0000 0000 0000 0000 0000 0000
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24 80: 0000 0000 0000 0000 0000 0000 0000 0000
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25 90: 0000 0000 0000 0312 004F 0070 0065 006E
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26 A0: 004D 006F 006B 006F 0330 0044 0065 0062
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27 B0: 0075 0067 0020 0042 006F 0061 0072 0064
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28 C0: 0020 0066 006F 0072 0020 004E 0065 006F
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29 D0: 0031 0039 0037 0033 0312 0046 0054 0053
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30 E0: 0048 0044 004E 0032 004B 0000 0001 0000
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31 F0: 0000 0000 0000 0000 0000 0000 0000 773F