From mboxrd@z Thu Jan 1 00:00:00 1970 From: Grant Edwards To: Dave Airlie Cc: ecos-discuss@sources.redhat.com Subject: Re: [ECOS] PID ROM and eCos Date: Wed, 24 Jan 2001 07:42:00 -0000 Message-id: <20010124094608.A1646@visi.com> References: X-SW-Source: 2001-01/msg00400.html On Wed, Jan 24, 2001 at 03:15:20PM +0000, Dave Airlie wrote: > 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 ? Piece of cake. > Could I use something like redboot or anything like that for > this purpose or is a platform where this has been done .. Sure, RedBoot would work great, but's it's overkill if all you want is to copy a single fixed image to RAM and execute it. That only takes 10-15 lines of assembly language. You'll probably also want to re-map memory so that RAM is at address 0 instead of ROM (if possible). You can run eCos from RAM with ROM at 0, but it's a pain since you'll have to hack up the vectors.S file in hal/arm/arch/. -- Grant Edwards grante@visi.com