Rockbox Technical Forums

Rockbox Development => Starting Development and Compiling => Topic started by: lemon_jesus on November 14, 2020, 03:39:55 AM

Title: Looking for someone with experience with NAND (for the Nano3G)
Post by: lemon_jesus on November 14, 2020, 03:39:55 AM
Hey everybody. I'm not sure if there's a better place to put this for better visibility.

I'm currently doing work on the Nano 3G's NAND driver, but I've hit a wall where my knowledge runs out and Google searches have been useless. I'm hoping someone with experience with NAND controllers and interfaces can help me to understand how the Nano 3G's NAND interface works. There are some things I'm discovering that I don't fully understand that must be somewhat common for other NAND controllers, but I've gotten to the point where I don't even know what words to put into Google to get answers.

If there's a better place to ask - or a group of devs elsewhere that has seen a NAND controller or two - I hope someone can point me in that direction.

Thank you!
Title: Re: Looking for someone with experience with NAND (for the Nano3G)
Post by: wodz on November 14, 2020, 06:47:14 AM
I did some RE work on FTL drivers but unfortunately I never worked on any iPod. TheSeven and friends from freemyipod are the guys you'll need to get touch with. From what I remember consensus was that ipod 3g FTL is similar to 2g but not the same.

Good luck
Title: Re: Looking for someone with experience with NAND (for the Nano3G)
Post by: lemon_jesus on November 14, 2020, 03:13:27 PM
Thanks for the reply! Yeah, as far as I can tell the FTL is pretty similar. But I can't figure out the FIL bit - the actual registers used to interact with the NAND through the SoC seem very different between the 2g and the 3g. That's the trouble I'm having now.

I would love to get in touch with TheSeven, but I haven't seen him around much. Does he still lurk? I'm also standing on the shoulders of benedikt93's work reversing the driver, but I don't think I've seen him around much either. I'm about 10 years late to the party.

Do you know if they're still around... at all?
Title: Re: Looking for someone with experience with NAND (for the Nano3G)
Post by: saratoga on November 14, 2020, 04:19:02 PM
He's usually idling in the #rockbox irc channel.