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Re: PID ROM and eCos

To: Dave Airlie <airlied at parthus dot com>
Subject: Re: [ECOS] PID ROM and eCos
From: Andrew Lunn <andrew dot lunn at ascom dot ch>
Date: Wed, 24 Jan 2001 16:27:07 +0100
Cc: ecos-discuss at sources dot redhat dot com
References: <Pine.LNX.4.21.0101241502560.25355-200000@platinum.limerick.sslinc.com>

> Hi,
> 	I've got an application that uses serial, and I seem to be getting
> serial overruns at 38400 on the serial port on the PID but only when I'm
> running eCos out of the FLASH on board, the flash is 16-bit so is probably
> slow to load stuff from, 
> 
> So my question is how feasible is to build eCos for RAM, and build a small
> routine to link against it that boots up and copies all of eCos into RAM
> and starts it ?

Some platforms support ROMRAM. The HAL copies itself out of ROM into
RAM and then executes. I'd suggest you find such a HAL and use it as a
template to make your HAL do the same.

        Andrew

References:
- PID ROM and eCos
  - From: Dave Airlie

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