loader: Use the actual struct devdesc at the start of all *_devdesc structs
FreeBSD update: https://svnweb.freebsd.org/base?view=revision&revision=330809
The current system is fragile and requires very careful layout of all *_devdesc structures. It also makes it hard to change the base devdesc. Take a page from CAM and put the 'header' in all the derived classes and adjust the code to match.
For OFW, move the iHandle h_handle out of a slot conflicting with d_opendata. Due to quirks in the alignment rules, this worked. However changing the code to use d_opendata storage now that it's a pointer is hard, so just have a separate field for it.
All other cleanups were to make the *_devdesc structures match where they'd taken some liberties that were none-the-less compatible enough to work.
Also add the missing userboot bcache bits along with devdesc changes.
Updated by Electric Monk about 3 years ago
- Status changed from In Progress to Closed
- % Done changed from 90 to 100
commit 76b35943c866f9d879ff5fc7e6fab17bef2b3402 Author: Toomas Soome <email@example.com> Date: 2018-05-16T10:01:56.000Z 9275 loader: Use the actual struct devdesc at the start of all *_devdesc structs Reviewed by: Yuri Pankov <firstname.lastname@example.org> Approved by: Hans Rosenfeld <email@example.com>