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doc: put all the u-boot/serial stuff in one place to link from

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Daniel Barlow
2023-11-12 16:55:15 +00:00
parent 7cfb92e3ce
commit 262efaabe6
13 changed files with 100 additions and 72 deletions
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16
doc/tutorial.rst
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@@ -137,20 +137,12 @@ unbrick if necessary.
work here, but you accept the slightly greater bricking
risk if it doesn't.
You may want to acquire a `USB TTL serial cable
<https://cpc.farnell.com/ftdi/ttl-232r-rpi/cable-debug-ttl-232-usb-rpi/dp/SC12825?st=usb%20to%20uart%20cable>`_
when you start working with Liminix on real hardware. You
won't *need* it for this example, assuming it works, but it
You may want to read and inwardly digest the Develoment Manual section
:ref:`serial` when you start working with Liminix on real hardware. You
won't *need* serial access for this example, assuming it works, but it
allows you
to see the boot monitor and kernel messages, and to login directly to
the device if for some reason it doesn't bring its network up. You have options
here: the FTDI-based cables are the Rolls Royce of serial cables,
whereas the ones based on PL2303 and CP2102 chipsets are cheaper but
also fussier - or you could even get creative and use e.g. a
`Raspberry Pi <https://pinout.xyz/#>`_ or other SBC with a UART and
TX/RX/GND header pins. Make sure that the voltages are compatible:
this is a 3.3v device and you don't want to be sending it 5v or (even
worse) 12v.
the device if for some reason it doesn't bring its network up.
Now we can build Liminix. Although we could use the same example
configuration as we did for Qemu, you might not want to plug a DHCP