Thanks, very helpful info. Looks like I may have to do something light weight like ecos. I believe redboot is based on ecos so there may be a starting point there for the i.mx27. Regards Geoff On Mon, Mar 28, 2011 at 6:46 PM, Sascha Hauer wrote: > Hi Geoff, > > On Mon, Mar 28, 2011 at 01:25:18PM +1000, Geoff Smith wrote: > > Apologies for the newbie question. I am looking for a fastboot option for > > the i.MX27 > > > > I want to be capturing video data from a cold start within 300ms > (preferably > > 200ms). > > The best I could get out of an i.MX27 was about 700ms. The main limiting > factor is how fast you can load an image from the boot medium (Nand > flash in my case). Given that I can read from Nand with 16MB/s a 5MB > image takes about 300ms to load. I think you'll need many dirty tricks > doing this with Linux, like a massively stripped down kernel and perhaps > starting the capture in the kernel (not in the application). > > I wouldn't say it's not possible, but it's definitely a hard task. > > Sascha > > > -- > Pengutronix e.K. | | > Industrial Linux Solutions | http://www.pengutronix.de/ | > Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | > Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 | > -- *Geoff Smith * *Founder and CTO* *gjsmith@vardr.com * *+61 4 1200 7354 *