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annotate target-utils/README @ 733:bed7981ac8ca

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doc/Compal-FFS: update for IMEI found in OTP cells
author Mychaela Falconia <falcon@freecalypso.org>
date Fri, 28 Aug 2020 15:58:46 +0000
parents e7502631a0f9
children
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1 The following target utilities or code components are currently buildable in
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2 this target-utils tree:
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3
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4 compalstage For Compal phones only: a little piece of code that is fed to
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5 the original fw's bootloader via the serial download protocol
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6 provided by the latter; it re-enables the Calypso chip boot ROM
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7 and jumps to it, allowing our loadagent to be loaded in the
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8 same way as on freedom-enabled devices.
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10 helloapp Template/skeleton for building programs like loadagent and
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11 pirexplore.
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13 loadagent Loadagent is built to be loaded and run out of the Calypso
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14 internal (on-chip) RAM, and does not depend on any hardware
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15 outside of the Calypso chip itself - thus it should run
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16 unchanged on all Calypso targets. It expects to be loaded by
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17 the Calypso ROM bootloader in the UART download mode, and it
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18 reads a RAM variable left behind by the ROM code that indicates
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19 which UART has been used to perform that download - it then
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20 uses that same UART to communicate with the host, presenting an
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21 interactive command prompt. You can run loadagent "raw" by
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22 loading loadagent.srec with fc-iram, but normally it is used
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23 "behind the scenes" by fc-loadtool and fc-xram.
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25 pirexplore For Pirelli DP-L10 target only: this program is built in the
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26 same manner as loadagent (also runs out of IRAM, expects to be
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27 loaded with fc-iram, and presents an interactive command prompt
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28 on the autodetected UART), but it automatically performs some
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29 hardware (board level) initialization specific to the Pirelli,
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30 and offers additional commands for exploring the hardware
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31 features of this device.
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32
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33 tf-breakin Here we build the payload for the tfc139 hack-utility; see
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34 ../rvinterf/lowlevel/tfc139.c for the ugly details.