Refactor ATA driver, improve adapter compatibility, and fix display shutdown bug

[oxGorou]

ipodloader2 previously used 0x10 PIO mode. While faster, this could lead to data corruption with certain CF, SD, and SATA adapters..., causing the Invalid MBR error reported in #7. While commit f3bdd31 resolved most of these errors, porting ATA features from the Rockbox bootloader provides significantly better reliability across adapters.

This update also fixes a display controller bug where putting the Monochrome iPod into standby from ipodloader2 and waking it caused random vertical lines to appear due to an improper display shutdown sequence.

Tested on:

• iPod 4th Gen Monochrome (128GB mSATA)

[EvergreenTrone]

Sounds good! That's great—I'd love to test it out. How does it actually work? Do you have a ready-made .bin for us? Thanks for your work.

[oxGorou]

Sounds good! That's great—I'd love to test it out. How does it actually work? Do you have a ready-made .bin for us? Thanks for your work.

You can download the loader at https://github.com/oxGorou/ipodloader2/actions/runs/32807890972#artifacts
Since I disabled debugging for this build, you will need to modify the code to enable debug prints if you need to troubleshoot.
The loader works well on my iPod 4th Gen Monochrome with an mSATA adapter, it can boot the stock OS, Rockbox, and Linux. However I'm not sure about other monochrome/video iPods and adapters, as I am currently just trying to port most of the new ATA features from Rockbox

[oxGorou]

@EvergreenTrone Did it work?

[oxGorou]

Sounds good! That's great—I'd love to test it out. How does it actually work? Do you have a ready-made .bin for us? Thanks for your work.

You can download the loader at oxGorou/ipodloader2/actions/runs/32807890972#artifacts Since I disabled debugging for this build, you will need to modify the code to enable debug prints if you need to troubleshoot. The loader works well on my iPod 4th Gen Monochrome with an mSATA adapter, it can boot the stock OS, Rockbox, and Linux. However I'm not sure about other monochrome/video iPods and adapters, as I am currently just trying to port most of the new ATA features from Rockbox

https://github.com/oxGorou/ipodloader2/releases/tag/2.9.0