[PATCH v2 0/5] minitty: a minimal TTY layer alternative for embedded systems

Geert Uytterhoeven geert at linux-m68k.org
Mon Apr 3 11:14:08 PDT 2017

On Mon, Apr 3, 2017 at 12:44 AM, Stuart Longland
<stuartl at longlandclan.id.au> wrote:
> On 03/04/17 07:41, Nicolas Pitre wrote:
>>> No PTYs seems like a big limitation. This means no sshd?
>> Again, my ultimate system target is in the sub-megabyte of RAM.  I
>> really doubt you'll be able to fit an SSH server in there even if PTYs
>> were supported, unless sshd (or dropbear) can be made really tiny.
>> Otherwise you most probably have sufficient resources to run the regular
>> TTY code.
> Are we talking small microcontrollers here?  The smallest machine in
> terms of RAM I ever recall running Linux on was a 386SX/25 MHz with 4MB
> RAM, and that had a MMU.

Let's halve that. I once tried and ran Linux in 2 MiB, incl. X, twm, and xterm.
Of course with swap enabled.  And swapping like hell.



Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert at linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

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