[ECOS] Additional serial drivers & file systems & redboot for i386 targets

Jonathan Larmour jlarmour@redhat.com
Fri May 18 13:23:00 GMT 2001

Teng Chee Wan Philip wrote:
> Hi,
> I have a few questions about the i386 PC:
> 1.  The i386 PC target has 2 serial ports.  I would like to add a serial I/O
> card to it to get more serial I/O ports and write a serial I/O driver for it.
> What would be the neatest way to do it?  The serial I/O card needs some
> additional initialisation to 'activate' it.  Do I modify
> packages/io/serial/v1_3_1/i386/pc_serial.c and the corresponding .cdl file
> directly?  I hope to use the configuration tool to enable or disable the driver
> depending on whether the serial card is installed or not.

Sounds about right.
> 2.  I read some exchanges about having a DOS Filesystem on ECOS.  Personally, I
> felt this will be useful, esp for my application where I need to store large
> amount of data on harddisks.  Is this coming in the foreseeable future?
> Meanwhile, is there any way I can make use of the harddisk to store my data
> under ECOS?  Using raw filesystems(if any)or other formats?

As far as I know, there's no effort currently to provide a DOS filesystem
_publically_ for eCos. I know some people out there have written their own.

> 3.  Is redboot supported on i386 target?  I can't find any.  Is there any reason
> why redboot is not supported?  Or are we just waiting for someone to develop it?

It has been developed. It's a long story, but if you search the mail
archives at http://sources.redhat.com/ml/ecos-discuss you'll find patches
from Fabrice Gautier. Note that they may not apply well to the current CVS
so you may have to check out CVS from an earlier date.

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