I haven't investigated yet, perhaps it would be easier introducing the custom floppy sizes that are the multiple of 1.44MB. For example 23,04MB mega floppy (16x floppy) - I think it could be bigger than your 16MB chip because it will be LZMA compressed (and the remaining empty space compressed really good). Good luck Rafael.
On Sat, Apr 13, 2019 at 6:58 PM Rafael Send firstname.lastname@example.org wrote:
Hi, Thanks for the encouragement. I already "practised" building both coreboot and SeaBIOS separately, albeit with no modifications. I'm not a software engineer so it'll be like taking shots in the dark, but I'll see what I can come up with.
Mike Banon email@example.com schrieb am Fr., 12. Apr. 2019, 22:52:
I believe that, with a little more effort, this guy would have succeeded at adding a new floppy format. A bit later I'm going to extend KolibriOS floppy with more cool stuff, and it could go from 1.44MB to beyond 2.88MB even with the compression is used (so wouldn't fit even into the largest currently supported floppy). However I'm not afraid and think it could be done easily. And you could quickly debug it using QEMU, maybe he was trying it only at real hardware and this was time consuming... Just make a special coreboot+SeaBIOS build for QEMU and add a floppy there.
Best regards, Mike Banon
On Fri, Apr 12, 2019 at 9:39 PM Rafael Send firstname.lastname@example.org wrote:
Hi, I'm working on stuffing a bootable Linux distro into coreboot. In QEMU I already succeded by using coreboot's built-in kernel loading mechanism, but that's without SeaBIOS.
I'd love to have it as a SeaBIOS payload so I can also boot other things, but I guess I'd have to create a custom-sized floppy image for this or figure out how to create an ELF payload out of a Linux kernel (I'm open to either, but I wasn't able to find any documentation on the ELF method).
The guy who put Win 3.1 in coreboot attempted the floppy method, but according to his article he did not find success with this method due to unknown and complex issues in the floppy-side logic of SeaBIOS.
So, I'm making the question explicit: What would it take to support custom-sized floppy images? In particular, I'm thinking of a 16MB device...
Alternatively, would it be possible to create an ELF file out of a Linux kernel+initrd / bootable image?
Cheers, Rafael _______________________________________________ SeaBIOS mailing list -- email@example.com To unsubscribe send an email to firstname.lastname@example.org